1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2015 Free Software Foundation, Inc.
5 Contributed by Cygnus Support. Written by John Gilmore.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #if !defined (TARGET_H)
30 struct bp_target_info;
32 struct target_section_table;
33 struct trace_state_variable;
37 struct static_tracepoint_marker;
38 struct traceframe_info;
43 #include "infrun.h" /* For enum exec_direction_kind. */
44 #include "breakpoint.h" /* For enum bptype. */
46 /* This include file defines the interface between the main part
47 of the debugger, and the part which is target-specific, or
48 specific to the communications interface between us and the
51 A TARGET is an interface between the debugger and a particular
52 kind of file or process. Targets can be STACKED in STRATA,
53 so that more than one target can potentially respond to a request.
54 In particular, memory accesses will walk down the stack of targets
55 until they find a target that is interested in handling that particular
56 address. STRATA are artificial boundaries on the stack, within
57 which particular kinds of targets live. Strata exist so that
58 people don't get confused by pushing e.g. a process target and then
59 a file target, and wondering why they can't see the current values
60 of variables any more (the file target is handling them and they
61 never get to the process target). So when you push a file target,
62 it goes into the file stratum, which is always below the process
65 #include "target/target.h"
66 #include "target/resume.h"
67 #include "target/wait.h"
68 #include "target/waitstatus.h"
73 #include "gdb_signals.h"
77 #include "break-common.h" /* For enum target_hw_bp_type. */
81 dummy_stratum, /* The lowest of the low */
82 file_stratum, /* Executable files, etc */
83 process_stratum, /* Executing processes or core dump files */
84 thread_stratum, /* Executing threads */
85 record_stratum, /* Support record debugging */
86 arch_stratum /* Architecture overrides */
89 enum thread_control_capabilities
91 tc_none = 0, /* Default: can't control thread execution. */
92 tc_schedlock = 1, /* Can lock the thread scheduler. */
95 /* The structure below stores information about a system call.
96 It is basically used in the "catch syscall" command, and in
97 every function that gives information about a system call.
99 It's also good to mention that its fields represent everything
100 that we currently know about a syscall in GDB. */
103 /* The syscall number. */
106 /* The syscall name. */
110 /* Return a pretty printed form of target_waitstatus.
111 Space for the result is malloc'd, caller must free. */
112 extern char *target_waitstatus_to_string (const struct target_waitstatus *);
114 /* Return a pretty printed form of TARGET_OPTIONS.
115 Space for the result is malloc'd, caller must free. */
116 extern char *target_options_to_string (int target_options);
118 /* Possible types of events that the inferior handler will have to
120 enum inferior_event_type
122 /* Process a normal inferior event which will result in target_wait
125 /* We are called because a timer went off. */
127 /* We are called to do stuff after the inferior stops. */
129 /* We are called to do some stuff after the inferior stops, but we
130 are expected to reenter the proceed() and
131 handle_inferior_event() functions. This is used only in case of
132 'step n' like commands. */
136 /* Target objects which can be transfered using target_read,
137 target_write, et cetera. */
141 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
143 /* SPU target specific transfer. See "spu-tdep.c". */
145 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
146 TARGET_OBJECT_MEMORY,
147 /* Memory, avoiding GDB's data cache and trusting the executable.
148 Target implementations of to_xfer_partial never need to handle
149 this object, and most callers should not use it. */
150 TARGET_OBJECT_RAW_MEMORY,
151 /* Memory known to be part of the target's stack. This is cached even
152 if it is not in a region marked as such, since it is known to be
154 TARGET_OBJECT_STACK_MEMORY,
155 /* Memory known to be part of the target code. This is cached even
156 if it is not in a region marked as such. */
157 TARGET_OBJECT_CODE_MEMORY,
158 /* Kernel Unwind Table. See "ia64-tdep.c". */
159 TARGET_OBJECT_UNWIND_TABLE,
160 /* Transfer auxilliary vector. */
162 /* StackGhost cookie. See "sparc-tdep.c". */
163 TARGET_OBJECT_WCOOKIE,
164 /* Target memory map in XML format. */
165 TARGET_OBJECT_MEMORY_MAP,
166 /* Flash memory. This object can be used to write contents to
167 a previously erased flash memory. Using it without erasing
168 flash can have unexpected results. Addresses are physical
169 address on target, and not relative to flash start. */
171 /* Available target-specific features, e.g. registers and coprocessors.
172 See "target-descriptions.c". ANNEX should never be empty. */
173 TARGET_OBJECT_AVAILABLE_FEATURES,
174 /* Currently loaded libraries, in XML format. */
175 TARGET_OBJECT_LIBRARIES,
176 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
177 TARGET_OBJECT_LIBRARIES_SVR4,
178 /* Currently loaded libraries specific to AIX systems, in XML format. */
179 TARGET_OBJECT_LIBRARIES_AIX,
180 /* Get OS specific data. The ANNEX specifies the type (running
181 processes, etc.). The data being transfered is expected to follow
182 the DTD specified in features/osdata.dtd. */
183 TARGET_OBJECT_OSDATA,
184 /* Extra signal info. Usually the contents of `siginfo_t' on unix
186 TARGET_OBJECT_SIGNAL_INFO,
187 /* The list of threads that are being debugged. */
188 TARGET_OBJECT_THREADS,
189 /* Collected static trace data. */
190 TARGET_OBJECT_STATIC_TRACE_DATA,
191 /* The HP-UX registers (those that can be obtained or modified by using
192 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
193 TARGET_OBJECT_HPUX_UREGS,
194 /* The HP-UX shared library linkage pointer. ANNEX should be a string
195 image of the code address whose linkage pointer we are looking for.
197 The size of the data transfered is always 8 bytes (the size of an
199 TARGET_OBJECT_HPUX_SOLIB_GOT,
200 /* Traceframe info, in XML format. */
201 TARGET_OBJECT_TRACEFRAME_INFO,
202 /* Load maps for FDPIC systems. */
204 /* Darwin dynamic linker info data. */
205 TARGET_OBJECT_DARWIN_DYLD_INFO,
206 /* OpenVMS Unwind Information Block. */
207 TARGET_OBJECT_OPENVMS_UIB,
208 /* Branch trace data, in XML format. */
209 TARGET_OBJECT_BTRACE,
210 /* Branch trace configuration, in XML format. */
211 TARGET_OBJECT_BTRACE_CONF,
212 /* The pathname of the executable file that was run to create
213 a specified process. ANNEX should be a string representation
214 of the process ID of the process in question, in hexadecimal
216 TARGET_OBJECT_EXEC_FILE,
217 /* Possible future objects: TARGET_OBJECT_FILE, ... */
220 /* Possible values returned by target_xfer_partial, etc. */
222 enum target_xfer_status
224 /* Some bytes are transferred. */
227 /* No further transfer is possible. */
230 /* The piece of the object requested is unavailable. */
231 TARGET_XFER_UNAVAILABLE = 2,
233 /* Generic I/O error. Note that it's important that this is '-1',
234 as we still have target_xfer-related code returning hardcoded
236 TARGET_XFER_E_IO = -1,
238 /* Keep list in sync with target_xfer_status_to_string. */
241 /* Return the string form of STATUS. */
244 target_xfer_status_to_string (enum target_xfer_status status);
246 /* Enumeration of the kinds of traceframe searches that a target may
247 be able to perform. */
258 typedef struct static_tracepoint_marker *static_tracepoint_marker_p;
259 DEF_VEC_P(static_tracepoint_marker_p);
261 typedef enum target_xfer_status
262 target_xfer_partial_ftype (struct target_ops *ops,
263 enum target_object object,
266 const gdb_byte *writebuf,
269 ULONGEST *xfered_len);
271 enum target_xfer_status
272 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
273 const gdb_byte *writebuf, ULONGEST memaddr,
274 LONGEST len, ULONGEST *xfered_len);
276 /* Request that OPS transfer up to LEN addressable units of the target's
277 OBJECT. When reading from a memory object, the size of an addressable unit
278 is architecture dependent and can be found using
279 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
280 byte long. BUF should point to a buffer large enough to hold the read data,
281 taking into account the addressable unit size. The OFFSET, for a seekable
282 object, specifies the starting point. The ANNEX can be used to provide
283 additional data-specific information to the target.
285 Return the number of addressable units actually transferred, or a negative
286 error code (an 'enum target_xfer_error' value) if the transfer is not
287 supported or otherwise fails. Return of a positive value less than
288 LEN indicates that no further transfer is possible. Unlike the raw
289 to_xfer_partial interface, callers of these functions do not need
290 to retry partial transfers. */
292 extern LONGEST target_read (struct target_ops *ops,
293 enum target_object object,
294 const char *annex, gdb_byte *buf,
295 ULONGEST offset, LONGEST len);
297 struct memory_read_result
299 /* First address that was read. */
301 /* Past-the-end address. */
306 typedef struct memory_read_result memory_read_result_s;
307 DEF_VEC_O(memory_read_result_s);
309 extern void free_memory_read_result_vector (void *);
311 extern VEC(memory_read_result_s)* read_memory_robust (struct target_ops *ops,
312 const ULONGEST offset,
315 /* Request that OPS transfer up to LEN addressable units from BUF to the
316 target's OBJECT. When writing to a memory object, the addressable unit
317 size is architecture dependent and can be found using
318 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
319 byte long. The OFFSET, for a seekable object, specifies the starting point.
320 The ANNEX can be used to provide additional data-specific information to
323 Return the number of addressable units actually transferred, or a negative
324 error code (an 'enum target_xfer_status' value) if the transfer is not
325 supported or otherwise fails. Return of a positive value less than
326 LEN indicates that no further transfer is possible. Unlike the raw
327 to_xfer_partial interface, callers of these functions do not need to
328 retry partial transfers. */
330 extern LONGEST target_write (struct target_ops *ops,
331 enum target_object object,
332 const char *annex, const gdb_byte *buf,
333 ULONGEST offset, LONGEST len);
335 /* Similar to target_write, except that it also calls PROGRESS with
336 the number of bytes written and the opaque BATON after every
337 successful partial write (and before the first write). This is
338 useful for progress reporting and user interaction while writing
339 data. To abort the transfer, the progress callback can throw an
342 LONGEST target_write_with_progress (struct target_ops *ops,
343 enum target_object object,
344 const char *annex, const gdb_byte *buf,
345 ULONGEST offset, LONGEST len,
346 void (*progress) (ULONGEST, void *),
349 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
350 be read using OPS. The return value will be -1 if the transfer
351 fails or is not supported; 0 if the object is empty; or the length
352 of the object otherwise. If a positive value is returned, a
353 sufficiently large buffer will be allocated using xmalloc and
354 returned in *BUF_P containing the contents of the object.
356 This method should be used for objects sufficiently small to store
357 in a single xmalloc'd buffer, when no fixed bound on the object's
358 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
359 through this function. */
361 extern LONGEST target_read_alloc (struct target_ops *ops,
362 enum target_object object,
363 const char *annex, gdb_byte **buf_p);
365 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
366 returned as a string, allocated using xmalloc. If an error occurs
367 or the transfer is unsupported, NULL is returned. Empty objects
368 are returned as allocated but empty strings. A warning is issued
369 if the result contains any embedded NUL bytes. */
371 extern char *target_read_stralloc (struct target_ops *ops,
372 enum target_object object,
375 /* See target_ops->to_xfer_partial. */
376 extern target_xfer_partial_ftype target_xfer_partial;
378 /* Wrappers to target read/write that perform memory transfers. They
379 throw an error if the memory transfer fails.
381 NOTE: cagney/2003-10-23: The naming schema is lifted from
382 "frame.h". The parameter order is lifted from get_frame_memory,
383 which in turn lifted it from read_memory. */
385 extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr,
386 gdb_byte *buf, LONGEST len);
387 extern ULONGEST get_target_memory_unsigned (struct target_ops *ops,
388 CORE_ADDR addr, int len,
389 enum bfd_endian byte_order);
391 struct thread_info; /* fwd decl for parameter list below: */
393 /* The type of the callback to the to_async method. */
395 typedef void async_callback_ftype (enum inferior_event_type event_type,
398 /* Normally target debug printing is purely type-based. However,
399 sometimes it is necessary to override the debug printing on a
400 per-argument basis. This macro can be used, attribute-style, to
401 name the target debug printing function for a particular method
402 argument. FUNC is the name of the function. The macro's
403 definition is empty because it is only used by the
404 make-target-delegates script. */
406 #define TARGET_DEBUG_PRINTER(FUNC)
408 /* These defines are used to mark target_ops methods. The script
409 make-target-delegates scans these and auto-generates the base
410 method implementations. There are four macros that can be used:
412 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
413 does nothing. This is only valid if the method return type is
416 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
417 'tcomplain ()'. The base method simply makes this call, which is
418 assumed not to return.
420 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
421 base method returns this expression's value.
423 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
424 make-target-delegates does not generate a base method in this case,
425 but instead uses the argument function as the base method. */
427 #define TARGET_DEFAULT_IGNORE()
428 #define TARGET_DEFAULT_NORETURN(ARG)
429 #define TARGET_DEFAULT_RETURN(ARG)
430 #define TARGET_DEFAULT_FUNC(ARG)
434 struct target_ops *beneath; /* To the target under this one. */
435 const char *to_shortname; /* Name this target type */
436 const char *to_longname; /* Name for printing */
437 const char *to_doc; /* Documentation. Does not include trailing
438 newline, and starts with a one-line descrip-
439 tion (probably similar to to_longname). */
440 /* Per-target scratch pad. */
442 /* The open routine takes the rest of the parameters from the
443 command, and (if successful) pushes a new target onto the
444 stack. Targets should supply this routine, if only to provide
446 void (*to_open) (const char *, int);
447 /* Old targets with a static target vector provide "to_close".
448 New re-entrant targets provide "to_xclose" and that is expected
449 to xfree everything (including the "struct target_ops"). */
450 void (*to_xclose) (struct target_ops *targ);
451 void (*to_close) (struct target_ops *);
452 /* Attaches to a process on the target side. Arguments are as
453 passed to the `attach' command by the user. This routine can
454 be called when the target is not on the target-stack, if the
455 target_can_run routine returns 1; in that case, it must push
456 itself onto the stack. Upon exit, the target should be ready
457 for normal operations, and should be ready to deliver the
458 status of the process immediately (without waiting) to an
459 upcoming target_wait call. */
460 void (*to_attach) (struct target_ops *ops, const char *, int);
461 void (*to_post_attach) (struct target_ops *, int)
462 TARGET_DEFAULT_IGNORE ();
463 void (*to_detach) (struct target_ops *ops, const char *, int)
464 TARGET_DEFAULT_IGNORE ();
465 void (*to_disconnect) (struct target_ops *, const char *, int)
466 TARGET_DEFAULT_NORETURN (tcomplain ());
467 void (*to_resume) (struct target_ops *, ptid_t,
468 int TARGET_DEBUG_PRINTER (target_debug_print_step),
470 TARGET_DEFAULT_NORETURN (noprocess ());
471 ptid_t (*to_wait) (struct target_ops *,
472 ptid_t, struct target_waitstatus *,
473 int TARGET_DEBUG_PRINTER (target_debug_print_options))
474 TARGET_DEFAULT_NORETURN (noprocess ());
475 void (*to_fetch_registers) (struct target_ops *, struct regcache *, int)
476 TARGET_DEFAULT_IGNORE ();
477 void (*to_store_registers) (struct target_ops *, struct regcache *, int)
478 TARGET_DEFAULT_NORETURN (noprocess ());
479 void (*to_prepare_to_store) (struct target_ops *, struct regcache *)
480 TARGET_DEFAULT_NORETURN (noprocess ());
482 void (*to_files_info) (struct target_ops *)
483 TARGET_DEFAULT_IGNORE ();
484 int (*to_insert_breakpoint) (struct target_ops *, struct gdbarch *,
485 struct bp_target_info *)
486 TARGET_DEFAULT_FUNC (memory_insert_breakpoint);
487 int (*to_remove_breakpoint) (struct target_ops *, struct gdbarch *,
488 struct bp_target_info *)
489 TARGET_DEFAULT_FUNC (memory_remove_breakpoint);
491 /* Returns true if the target stopped because it executed a
492 software breakpoint. This is necessary for correct background
493 execution / non-stop mode operation, and for correct PC
494 adjustment on targets where the PC needs to be adjusted when a
495 software breakpoint triggers. In these modes, by the time GDB
496 processes a breakpoint event, the breakpoint may already be
497 done from the target, so GDB needs to be able to tell whether
498 it should ignore the event and whether it should adjust the PC.
499 See adjust_pc_after_break. */
500 int (*to_stopped_by_sw_breakpoint) (struct target_ops *)
501 TARGET_DEFAULT_RETURN (0);
502 /* Returns true if the above method is supported. */
503 int (*to_supports_stopped_by_sw_breakpoint) (struct target_ops *)
504 TARGET_DEFAULT_RETURN (0);
506 /* Returns true if the target stopped for a hardware breakpoint.
507 Likewise, if the target supports hardware breakpoints, this
508 method is necessary for correct background execution / non-stop
509 mode operation. Even though hardware breakpoints do not
510 require PC adjustment, GDB needs to be able to tell whether the
511 hardware breakpoint event is a delayed event for a breakpoint
512 that is already gone and should thus be ignored. */
513 int (*to_stopped_by_hw_breakpoint) (struct target_ops *)
514 TARGET_DEFAULT_RETURN (0);
515 /* Returns true if the above method is supported. */
516 int (*to_supports_stopped_by_hw_breakpoint) (struct target_ops *)
517 TARGET_DEFAULT_RETURN (0);
519 int (*to_can_use_hw_breakpoint) (struct target_ops *,
520 enum bptype, int, int)
521 TARGET_DEFAULT_RETURN (0);
522 int (*to_ranged_break_num_registers) (struct target_ops *)
523 TARGET_DEFAULT_RETURN (-1);
524 int (*to_insert_hw_breakpoint) (struct target_ops *,
525 struct gdbarch *, struct bp_target_info *)
526 TARGET_DEFAULT_RETURN (-1);
527 int (*to_remove_hw_breakpoint) (struct target_ops *,
528 struct gdbarch *, struct bp_target_info *)
529 TARGET_DEFAULT_RETURN (-1);
531 /* Documentation of what the two routines below are expected to do is
532 provided with the corresponding target_* macros. */
533 int (*to_remove_watchpoint) (struct target_ops *, CORE_ADDR, int,
534 enum target_hw_bp_type, struct expression *)
535 TARGET_DEFAULT_RETURN (-1);
536 int (*to_insert_watchpoint) (struct target_ops *, CORE_ADDR, int,
537 enum target_hw_bp_type, struct expression *)
538 TARGET_DEFAULT_RETURN (-1);
540 int (*to_insert_mask_watchpoint) (struct target_ops *,
541 CORE_ADDR, CORE_ADDR, int)
542 TARGET_DEFAULT_RETURN (1);
543 int (*to_remove_mask_watchpoint) (struct target_ops *,
544 CORE_ADDR, CORE_ADDR, int)
545 TARGET_DEFAULT_RETURN (1);
546 int (*to_stopped_by_watchpoint) (struct target_ops *)
547 TARGET_DEFAULT_RETURN (0);
548 int to_have_steppable_watchpoint;
549 int to_have_continuable_watchpoint;
550 int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *)
551 TARGET_DEFAULT_RETURN (0);
552 int (*to_watchpoint_addr_within_range) (struct target_ops *,
553 CORE_ADDR, CORE_ADDR, int)
554 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range);
556 /* Documentation of this routine is provided with the corresponding
558 int (*to_region_ok_for_hw_watchpoint) (struct target_ops *,
560 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint);
562 int (*to_can_accel_watchpoint_condition) (struct target_ops *,
565 TARGET_DEFAULT_RETURN (0);
566 int (*to_masked_watch_num_registers) (struct target_ops *,
567 CORE_ADDR, CORE_ADDR)
568 TARGET_DEFAULT_RETURN (-1);
569 void (*to_terminal_init) (struct target_ops *)
570 TARGET_DEFAULT_IGNORE ();
571 void (*to_terminal_inferior) (struct target_ops *)
572 TARGET_DEFAULT_IGNORE ();
573 void (*to_terminal_ours_for_output) (struct target_ops *)
574 TARGET_DEFAULT_IGNORE ();
575 void (*to_terminal_ours) (struct target_ops *)
576 TARGET_DEFAULT_IGNORE ();
577 void (*to_terminal_info) (struct target_ops *, const char *, int)
578 TARGET_DEFAULT_FUNC (default_terminal_info);
579 void (*to_kill) (struct target_ops *)
580 TARGET_DEFAULT_NORETURN (noprocess ());
581 void (*to_load) (struct target_ops *, const char *, int)
582 TARGET_DEFAULT_NORETURN (tcomplain ());
583 /* Start an inferior process and set inferior_ptid to its pid.
584 EXEC_FILE is the file to run.
585 ALLARGS is a string containing the arguments to the program.
586 ENV is the environment vector to pass. Errors reported with error().
587 On VxWorks and various standalone systems, we ignore exec_file. */
588 void (*to_create_inferior) (struct target_ops *,
589 char *, char *, char **, int);
590 void (*to_post_startup_inferior) (struct target_ops *, ptid_t)
591 TARGET_DEFAULT_IGNORE ();
592 int (*to_insert_fork_catchpoint) (struct target_ops *, int)
593 TARGET_DEFAULT_RETURN (1);
594 int (*to_remove_fork_catchpoint) (struct target_ops *, int)
595 TARGET_DEFAULT_RETURN (1);
596 int (*to_insert_vfork_catchpoint) (struct target_ops *, int)
597 TARGET_DEFAULT_RETURN (1);
598 int (*to_remove_vfork_catchpoint) (struct target_ops *, int)
599 TARGET_DEFAULT_RETURN (1);
600 int (*to_follow_fork) (struct target_ops *, int, int)
601 TARGET_DEFAULT_FUNC (default_follow_fork);
602 int (*to_insert_exec_catchpoint) (struct target_ops *, int)
603 TARGET_DEFAULT_RETURN (1);
604 int (*to_remove_exec_catchpoint) (struct target_ops *, int)
605 TARGET_DEFAULT_RETURN (1);
606 int (*to_set_syscall_catchpoint) (struct target_ops *,
607 int, int, int, int, int *)
608 TARGET_DEFAULT_RETURN (1);
609 int (*to_has_exited) (struct target_ops *, int, int, int *)
610 TARGET_DEFAULT_RETURN (0);
611 void (*to_mourn_inferior) (struct target_ops *)
612 TARGET_DEFAULT_FUNC (default_mourn_inferior);
613 /* Note that to_can_run is special and can be invoked on an
614 unpushed target. Targets defining this method must also define
615 to_can_async_p and to_supports_non_stop. */
616 int (*to_can_run) (struct target_ops *)
617 TARGET_DEFAULT_RETURN (0);
619 /* Documentation of this routine is provided with the corresponding
621 void (*to_pass_signals) (struct target_ops *, int,
622 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
623 TARGET_DEFAULT_IGNORE ();
625 /* Documentation of this routine is provided with the
626 corresponding target_* function. */
627 void (*to_program_signals) (struct target_ops *, int,
628 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
629 TARGET_DEFAULT_IGNORE ();
631 int (*to_thread_alive) (struct target_ops *, ptid_t ptid)
632 TARGET_DEFAULT_RETURN (0);
633 void (*to_update_thread_list) (struct target_ops *)
634 TARGET_DEFAULT_IGNORE ();
635 char *(*to_pid_to_str) (struct target_ops *, ptid_t)
636 TARGET_DEFAULT_FUNC (default_pid_to_str);
637 char *(*to_extra_thread_info) (struct target_ops *, struct thread_info *)
638 TARGET_DEFAULT_RETURN (NULL);
639 char *(*to_thread_name) (struct target_ops *, struct thread_info *)
640 TARGET_DEFAULT_RETURN (NULL);
641 void (*to_stop) (struct target_ops *, ptid_t)
642 TARGET_DEFAULT_IGNORE ();
643 void (*to_rcmd) (struct target_ops *,
644 const char *command, struct ui_file *output)
645 TARGET_DEFAULT_FUNC (default_rcmd);
646 char *(*to_pid_to_exec_file) (struct target_ops *, int pid)
647 TARGET_DEFAULT_RETURN (NULL);
648 void (*to_log_command) (struct target_ops *, const char *)
649 TARGET_DEFAULT_IGNORE ();
650 struct target_section_table *(*to_get_section_table) (struct target_ops *)
651 TARGET_DEFAULT_RETURN (NULL);
652 enum strata to_stratum;
653 int (*to_has_all_memory) (struct target_ops *);
654 int (*to_has_memory) (struct target_ops *);
655 int (*to_has_stack) (struct target_ops *);
656 int (*to_has_registers) (struct target_ops *);
657 int (*to_has_execution) (struct target_ops *, ptid_t);
658 int to_has_thread_control; /* control thread execution */
659 int to_attach_no_wait;
660 /* This method must be implemented in some situations. See the
661 comment on 'to_can_run'. */
662 int (*to_can_async_p) (struct target_ops *)
663 TARGET_DEFAULT_RETURN (0);
664 int (*to_is_async_p) (struct target_ops *)
665 TARGET_DEFAULT_RETURN (0);
666 void (*to_async) (struct target_ops *, int)
667 TARGET_DEFAULT_NORETURN (tcomplain ());
668 /* This method must be implemented in some situations. See the
669 comment on 'to_can_run'. */
670 int (*to_supports_non_stop) (struct target_ops *)
671 TARGET_DEFAULT_RETURN (0);
672 /* Return true if the target operates in non-stop mode even with
673 "set non-stop off". */
674 int (*to_always_non_stop_p) (struct target_ops *)
675 TARGET_DEFAULT_RETURN (0);
676 /* find_memory_regions support method for gcore */
677 int (*to_find_memory_regions) (struct target_ops *,
678 find_memory_region_ftype func, void *data)
679 TARGET_DEFAULT_FUNC (dummy_find_memory_regions);
680 /* make_corefile_notes support method for gcore */
681 char * (*to_make_corefile_notes) (struct target_ops *, bfd *, int *)
682 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes);
683 /* get_bookmark support method for bookmarks */
684 gdb_byte * (*to_get_bookmark) (struct target_ops *, const char *, int)
685 TARGET_DEFAULT_NORETURN (tcomplain ());
686 /* goto_bookmark support method for bookmarks */
687 void (*to_goto_bookmark) (struct target_ops *, const gdb_byte *, int)
688 TARGET_DEFAULT_NORETURN (tcomplain ());
689 /* Return the thread-local address at OFFSET in the
690 thread-local storage for the thread PTID and the shared library
691 or executable file given by OBJFILE. If that block of
692 thread-local storage hasn't been allocated yet, this function
693 may return an error. LOAD_MODULE_ADDR may be zero for statically
694 linked multithreaded inferiors. */
695 CORE_ADDR (*to_get_thread_local_address) (struct target_ops *ops,
697 CORE_ADDR load_module_addr,
699 TARGET_DEFAULT_NORETURN (generic_tls_error ());
701 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
702 OBJECT. The OFFSET, for a seekable object, specifies the
703 starting point. The ANNEX can be used to provide additional
704 data-specific information to the target.
706 Return the transferred status, error or OK (an
707 'enum target_xfer_status' value). Save the number of bytes
708 actually transferred in *XFERED_LEN if transfer is successful
709 (TARGET_XFER_OK) or the number unavailable bytes if the requested
710 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
711 smaller than LEN does not indicate the end of the object, only
712 the end of the transfer; higher level code should continue
713 transferring if desired. This is handled in target.c.
715 The interface does not support a "retry" mechanism. Instead it
716 assumes that at least one byte will be transfered on each
719 NOTE: cagney/2003-10-17: The current interface can lead to
720 fragmented transfers. Lower target levels should not implement
721 hacks, such as enlarging the transfer, in an attempt to
722 compensate for this. Instead, the target stack should be
723 extended so that it implements supply/collect methods and a
724 look-aside object cache. With that available, the lowest
725 target can safely and freely "push" data up the stack.
727 See target_read and target_write for more information. One,
728 and only one, of readbuf or writebuf must be non-NULL. */
730 enum target_xfer_status (*to_xfer_partial) (struct target_ops *ops,
731 enum target_object object,
734 const gdb_byte *writebuf,
735 ULONGEST offset, ULONGEST len,
736 ULONGEST *xfered_len)
737 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO);
739 /* Returns the memory map for the target. A return value of NULL
740 means that no memory map is available. If a memory address
741 does not fall within any returned regions, it's assumed to be
742 RAM. The returned memory regions should not overlap.
744 The order of regions does not matter; target_memory_map will
745 sort regions by starting address. For that reason, this
746 function should not be called directly except via
749 This method should not cache data; if the memory map could
750 change unexpectedly, it should be invalidated, and higher
751 layers will re-fetch it. */
752 VEC(mem_region_s) *(*to_memory_map) (struct target_ops *)
753 TARGET_DEFAULT_RETURN (NULL);
755 /* Erases the region of flash memory starting at ADDRESS, of
758 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
759 on flash block boundaries, as reported by 'to_memory_map'. */
760 void (*to_flash_erase) (struct target_ops *,
761 ULONGEST address, LONGEST length)
762 TARGET_DEFAULT_NORETURN (tcomplain ());
764 /* Finishes a flash memory write sequence. After this operation
765 all flash memory should be available for writing and the result
766 of reading from areas written by 'to_flash_write' should be
767 equal to what was written. */
768 void (*to_flash_done) (struct target_ops *)
769 TARGET_DEFAULT_NORETURN (tcomplain ());
771 /* Describe the architecture-specific features of this target. If
772 OPS doesn't have a description, this should delegate to the
773 "beneath" target. Returns the description found, or NULL if no
774 description was available. */
775 const struct target_desc *(*to_read_description) (struct target_ops *ops)
776 TARGET_DEFAULT_RETURN (NULL);
778 /* Build the PTID of the thread on which a given task is running,
779 based on LWP and THREAD. These values are extracted from the
780 task Private_Data section of the Ada Task Control Block, and
781 their interpretation depends on the target. */
782 ptid_t (*to_get_ada_task_ptid) (struct target_ops *,
783 long lwp, long thread)
784 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid);
786 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
787 Return 0 if *READPTR is already at the end of the buffer.
788 Return -1 if there is insufficient buffer for a whole entry.
789 Return 1 if an entry was read into *TYPEP and *VALP. */
790 int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr,
791 gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
792 TARGET_DEFAULT_FUNC (default_auxv_parse);
794 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
795 sequence of bytes in PATTERN with length PATTERN_LEN.
797 The result is 1 if found, 0 if not found, and -1 if there was an error
798 requiring halting of the search (e.g. memory read error).
799 If the pattern is found the address is recorded in FOUND_ADDRP. */
800 int (*to_search_memory) (struct target_ops *ops,
801 CORE_ADDR start_addr, ULONGEST search_space_len,
802 const gdb_byte *pattern, ULONGEST pattern_len,
803 CORE_ADDR *found_addrp)
804 TARGET_DEFAULT_FUNC (default_search_memory);
806 /* Can target execute in reverse? */
807 int (*to_can_execute_reverse) (struct target_ops *)
808 TARGET_DEFAULT_RETURN (0);
810 /* The direction the target is currently executing. Must be
811 implemented on targets that support reverse execution and async
812 mode. The default simply returns forward execution. */
813 enum exec_direction_kind (*to_execution_direction) (struct target_ops *)
814 TARGET_DEFAULT_FUNC (default_execution_direction);
816 /* Does this target support debugging multiple processes
818 int (*to_supports_multi_process) (struct target_ops *)
819 TARGET_DEFAULT_RETURN (0);
821 /* Does this target support enabling and disabling tracepoints while a trace
822 experiment is running? */
823 int (*to_supports_enable_disable_tracepoint) (struct target_ops *)
824 TARGET_DEFAULT_RETURN (0);
826 /* Does this target support disabling address space randomization? */
827 int (*to_supports_disable_randomization) (struct target_ops *);
829 /* Does this target support the tracenz bytecode for string collection? */
830 int (*to_supports_string_tracing) (struct target_ops *)
831 TARGET_DEFAULT_RETURN (0);
833 /* Does this target support evaluation of breakpoint conditions on its
835 int (*to_supports_evaluation_of_breakpoint_conditions) (struct target_ops *)
836 TARGET_DEFAULT_RETURN (0);
838 /* Does this target support evaluation of breakpoint commands on its
840 int (*to_can_run_breakpoint_commands) (struct target_ops *)
841 TARGET_DEFAULT_RETURN (0);
843 /* Determine current architecture of thread PTID.
845 The target is supposed to determine the architecture of the code where
846 the target is currently stopped at (on Cell, if a target is in spu_run,
847 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
848 This is architecture used to perform decr_pc_after_break adjustment,
849 and also determines the frame architecture of the innermost frame.
850 ptrace operations need to operate according to target_gdbarch ().
852 The default implementation always returns target_gdbarch (). */
853 struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t)
854 TARGET_DEFAULT_FUNC (default_thread_architecture);
856 /* Determine current address space of thread PTID.
858 The default implementation always returns the inferior's
860 struct address_space *(*to_thread_address_space) (struct target_ops *,
862 TARGET_DEFAULT_FUNC (default_thread_address_space);
864 /* Target file operations. */
866 /* Return nonzero if the filesystem seen by the current inferior
867 is the local filesystem, zero otherwise. */
868 int (*to_filesystem_is_local) (struct target_ops *)
869 TARGET_DEFAULT_RETURN (1);
871 /* Open FILENAME on the target, in the filesystem as seen by INF,
872 using FLAGS and MODE. If INF is NULL, use the filesystem seen
873 by the debugger (GDB or, for remote targets, the remote stub).
874 Return a target file descriptor, or -1 if an error occurs (and
875 set *TARGET_ERRNO). */
876 int (*to_fileio_open) (struct target_ops *,
877 struct inferior *inf, const char *filename,
878 int flags, int mode, int *target_errno);
880 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
881 Return the number of bytes written, or -1 if an error occurs
882 (and set *TARGET_ERRNO). */
883 int (*to_fileio_pwrite) (struct target_ops *,
884 int fd, const gdb_byte *write_buf, int len,
885 ULONGEST offset, int *target_errno);
887 /* Read up to LEN bytes FD on the target into READ_BUF.
888 Return the number of bytes read, or -1 if an error occurs
889 (and set *TARGET_ERRNO). */
890 int (*to_fileio_pread) (struct target_ops *,
891 int fd, gdb_byte *read_buf, int len,
892 ULONGEST offset, int *target_errno);
894 /* Get information about the file opened as FD and put it in
895 SB. Return 0 on success, or -1 if an error occurs (and set
897 int (*to_fileio_fstat) (struct target_ops *,
898 int fd, struct stat *sb, int *target_errno);
900 /* Close FD on the target. Return 0, or -1 if an error occurs
901 (and set *TARGET_ERRNO). */
902 int (*to_fileio_close) (struct target_ops *, int fd, int *target_errno);
904 /* Unlink FILENAME on the target, in the filesystem as seen by
905 INF. If INF is NULL, use the filesystem seen by the debugger
906 (GDB or, for remote targets, the remote stub). Return 0, or
907 -1 if an error occurs (and set *TARGET_ERRNO). */
908 int (*to_fileio_unlink) (struct target_ops *,
909 struct inferior *inf,
910 const char *filename,
913 /* Read value of symbolic link FILENAME on the target, in the
914 filesystem as seen by INF. If INF is NULL, use the filesystem
915 seen by the debugger (GDB or, for remote targets, the remote
916 stub). Return a null-terminated string allocated via xmalloc,
917 or NULL if an error occurs (and set *TARGET_ERRNO). */
918 char *(*to_fileio_readlink) (struct target_ops *,
919 struct inferior *inf,
920 const char *filename,
924 /* Implement the "info proc" command. */
925 void (*to_info_proc) (struct target_ops *, const char *,
926 enum info_proc_what);
928 /* Tracepoint-related operations. */
930 /* Prepare the target for a tracing run. */
931 void (*to_trace_init) (struct target_ops *)
932 TARGET_DEFAULT_NORETURN (tcomplain ());
934 /* Send full details of a tracepoint location to the target. */
935 void (*to_download_tracepoint) (struct target_ops *,
936 struct bp_location *location)
937 TARGET_DEFAULT_NORETURN (tcomplain ());
939 /* Is the target able to download tracepoint locations in current
941 int (*to_can_download_tracepoint) (struct target_ops *)
942 TARGET_DEFAULT_RETURN (0);
944 /* Send full details of a trace state variable to the target. */
945 void (*to_download_trace_state_variable) (struct target_ops *,
946 struct trace_state_variable *tsv)
947 TARGET_DEFAULT_NORETURN (tcomplain ());
949 /* Enable a tracepoint on the target. */
950 void (*to_enable_tracepoint) (struct target_ops *,
951 struct bp_location *location)
952 TARGET_DEFAULT_NORETURN (tcomplain ());
954 /* Disable a tracepoint on the target. */
955 void (*to_disable_tracepoint) (struct target_ops *,
956 struct bp_location *location)
957 TARGET_DEFAULT_NORETURN (tcomplain ());
959 /* Inform the target info of memory regions that are readonly
960 (such as text sections), and so it should return data from
961 those rather than look in the trace buffer. */
962 void (*to_trace_set_readonly_regions) (struct target_ops *)
963 TARGET_DEFAULT_NORETURN (tcomplain ());
965 /* Start a trace run. */
966 void (*to_trace_start) (struct target_ops *)
967 TARGET_DEFAULT_NORETURN (tcomplain ());
969 /* Get the current status of a tracing run. */
970 int (*to_get_trace_status) (struct target_ops *, struct trace_status *ts)
971 TARGET_DEFAULT_RETURN (-1);
973 void (*to_get_tracepoint_status) (struct target_ops *,
974 struct breakpoint *tp,
975 struct uploaded_tp *utp)
976 TARGET_DEFAULT_NORETURN (tcomplain ());
978 /* Stop a trace run. */
979 void (*to_trace_stop) (struct target_ops *)
980 TARGET_DEFAULT_NORETURN (tcomplain ());
982 /* Ask the target to find a trace frame of the given type TYPE,
983 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
984 number of the trace frame, and also the tracepoint number at
985 TPP. If no trace frame matches, return -1. May throw if the
987 int (*to_trace_find) (struct target_ops *,
988 enum trace_find_type type, int num,
989 CORE_ADDR addr1, CORE_ADDR addr2, int *tpp)
990 TARGET_DEFAULT_RETURN (-1);
992 /* Get the value of the trace state variable number TSV, returning
993 1 if the value is known and writing the value itself into the
994 location pointed to by VAL, else returning 0. */
995 int (*to_get_trace_state_variable_value) (struct target_ops *,
996 int tsv, LONGEST *val)
997 TARGET_DEFAULT_RETURN (0);
999 int (*to_save_trace_data) (struct target_ops *, const char *filename)
1000 TARGET_DEFAULT_NORETURN (tcomplain ());
1002 int (*to_upload_tracepoints) (struct target_ops *,
1003 struct uploaded_tp **utpp)
1004 TARGET_DEFAULT_RETURN (0);
1006 int (*to_upload_trace_state_variables) (struct target_ops *,
1007 struct uploaded_tsv **utsvp)
1008 TARGET_DEFAULT_RETURN (0);
1010 LONGEST (*to_get_raw_trace_data) (struct target_ops *, gdb_byte *buf,
1011 ULONGEST offset, LONGEST len)
1012 TARGET_DEFAULT_NORETURN (tcomplain ());
1014 /* Get the minimum length of instruction on which a fast tracepoint
1015 may be set on the target. If this operation is unsupported,
1016 return -1. If for some reason the minimum length cannot be
1017 determined, return 0. */
1018 int (*to_get_min_fast_tracepoint_insn_len) (struct target_ops *)
1019 TARGET_DEFAULT_RETURN (-1);
1021 /* Set the target's tracing behavior in response to unexpected
1022 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1023 void (*to_set_disconnected_tracing) (struct target_ops *, int val)
1024 TARGET_DEFAULT_IGNORE ();
1025 void (*to_set_circular_trace_buffer) (struct target_ops *, int val)
1026 TARGET_DEFAULT_IGNORE ();
1027 /* Set the size of trace buffer in the target. */
1028 void (*to_set_trace_buffer_size) (struct target_ops *, LONGEST val)
1029 TARGET_DEFAULT_IGNORE ();
1031 /* Add/change textual notes about the trace run, returning 1 if
1032 successful, 0 otherwise. */
1033 int (*to_set_trace_notes) (struct target_ops *,
1034 const char *user, const char *notes,
1035 const char *stopnotes)
1036 TARGET_DEFAULT_RETURN (0);
1038 /* Return the processor core that thread PTID was last seen on.
1039 This information is updated only when:
1040 - update_thread_list is called
1042 If the core cannot be determined -- either for the specified
1043 thread, or right now, or in this debug session, or for this
1044 target -- return -1. */
1045 int (*to_core_of_thread) (struct target_ops *, ptid_t ptid)
1046 TARGET_DEFAULT_RETURN (-1);
1048 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1049 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1050 a match, 0 if there's a mismatch, and -1 if an error is
1051 encountered while reading memory. */
1052 int (*to_verify_memory) (struct target_ops *, const gdb_byte *data,
1053 CORE_ADDR memaddr, ULONGEST size)
1054 TARGET_DEFAULT_FUNC (default_verify_memory);
1056 /* Return the address of the start of the Thread Information Block
1057 a Windows OS specific feature. */
1058 int (*to_get_tib_address) (struct target_ops *,
1059 ptid_t ptid, CORE_ADDR *addr)
1060 TARGET_DEFAULT_NORETURN (tcomplain ());
1062 /* Send the new settings of write permission variables. */
1063 void (*to_set_permissions) (struct target_ops *)
1064 TARGET_DEFAULT_IGNORE ();
1066 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1067 with its details. Return 1 on success, 0 on failure. */
1068 int (*to_static_tracepoint_marker_at) (struct target_ops *, CORE_ADDR,
1069 struct static_tracepoint_marker *marker)
1070 TARGET_DEFAULT_RETURN (0);
1072 /* Return a vector of all tracepoints markers string id ID, or all
1073 markers if ID is NULL. */
1074 VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) (struct target_ops *, const char *id)
1075 TARGET_DEFAULT_NORETURN (tcomplain ());
1077 /* Return a traceframe info object describing the current
1078 traceframe's contents. This method should not cache data;
1079 higher layers take care of caching, invalidating, and
1080 re-fetching when necessary. */
1081 struct traceframe_info *(*to_traceframe_info) (struct target_ops *)
1082 TARGET_DEFAULT_NORETURN (tcomplain ());
1084 /* Ask the target to use or not to use agent according to USE. Return 1
1085 successful, 0 otherwise. */
1086 int (*to_use_agent) (struct target_ops *, int use)
1087 TARGET_DEFAULT_NORETURN (tcomplain ());
1089 /* Is the target able to use agent in current state? */
1090 int (*to_can_use_agent) (struct target_ops *)
1091 TARGET_DEFAULT_RETURN (0);
1093 /* Check whether the target supports branch tracing. */
1094 int (*to_supports_btrace) (struct target_ops *, enum btrace_format)
1095 TARGET_DEFAULT_RETURN (0);
1097 /* Enable branch tracing for PTID using CONF configuration.
1098 Return a branch trace target information struct for reading and for
1099 disabling branch trace. */
1100 struct btrace_target_info *(*to_enable_btrace) (struct target_ops *,
1102 const struct btrace_config *conf)
1103 TARGET_DEFAULT_NORETURN (tcomplain ());
1105 /* Disable branch tracing and deallocate TINFO. */
1106 void (*to_disable_btrace) (struct target_ops *,
1107 struct btrace_target_info *tinfo)
1108 TARGET_DEFAULT_NORETURN (tcomplain ());
1110 /* Disable branch tracing and deallocate TINFO. This function is similar
1111 to to_disable_btrace, except that it is called during teardown and is
1112 only allowed to perform actions that are safe. A counter-example would
1113 be attempting to talk to a remote target. */
1114 void (*to_teardown_btrace) (struct target_ops *,
1115 struct btrace_target_info *tinfo)
1116 TARGET_DEFAULT_NORETURN (tcomplain ());
1118 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1119 DATA is cleared before new trace is added. */
1120 enum btrace_error (*to_read_btrace) (struct target_ops *self,
1121 struct btrace_data *data,
1122 struct btrace_target_info *btinfo,
1123 enum btrace_read_type type)
1124 TARGET_DEFAULT_NORETURN (tcomplain ());
1126 /* Get the branch trace configuration. */
1127 const struct btrace_config *(*to_btrace_conf) (struct target_ops *self,
1128 const struct btrace_target_info *)
1129 TARGET_DEFAULT_RETURN (NULL);
1131 /* Stop trace recording. */
1132 void (*to_stop_recording) (struct target_ops *)
1133 TARGET_DEFAULT_IGNORE ();
1135 /* Print information about the recording. */
1136 void (*to_info_record) (struct target_ops *)
1137 TARGET_DEFAULT_IGNORE ();
1139 /* Save the recorded execution trace into a file. */
1140 void (*to_save_record) (struct target_ops *, const char *filename)
1141 TARGET_DEFAULT_NORETURN (tcomplain ());
1143 /* Delete the recorded execution trace from the current position
1145 void (*to_delete_record) (struct target_ops *)
1146 TARGET_DEFAULT_NORETURN (tcomplain ());
1148 /* Query if the record target is currently replaying. */
1149 int (*to_record_is_replaying) (struct target_ops *)
1150 TARGET_DEFAULT_RETURN (0);
1152 /* Go to the begin of the execution trace. */
1153 void (*to_goto_record_begin) (struct target_ops *)
1154 TARGET_DEFAULT_NORETURN (tcomplain ());
1156 /* Go to the end of the execution trace. */
1157 void (*to_goto_record_end) (struct target_ops *)
1158 TARGET_DEFAULT_NORETURN (tcomplain ());
1160 /* Go to a specific location in the recorded execution trace. */
1161 void (*to_goto_record) (struct target_ops *, ULONGEST insn)
1162 TARGET_DEFAULT_NORETURN (tcomplain ());
1164 /* Disassemble SIZE instructions in the recorded execution trace from
1165 the current position.
1166 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1167 disassemble SIZE succeeding instructions. */
1168 void (*to_insn_history) (struct target_ops *, int size, int flags)
1169 TARGET_DEFAULT_NORETURN (tcomplain ());
1171 /* Disassemble SIZE instructions in the recorded execution trace around
1173 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1174 disassemble SIZE instructions after FROM. */
1175 void (*to_insn_history_from) (struct target_ops *,
1176 ULONGEST from, int size, int flags)
1177 TARGET_DEFAULT_NORETURN (tcomplain ());
1179 /* Disassemble a section of the recorded execution trace from instruction
1180 BEGIN (inclusive) to instruction END (inclusive). */
1181 void (*to_insn_history_range) (struct target_ops *,
1182 ULONGEST begin, ULONGEST end, int flags)
1183 TARGET_DEFAULT_NORETURN (tcomplain ());
1185 /* Print a function trace of the recorded execution trace.
1186 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1187 succeeding functions. */
1188 void (*to_call_history) (struct target_ops *, int size, int flags)
1189 TARGET_DEFAULT_NORETURN (tcomplain ());
1191 /* Print a function trace of the recorded execution trace starting
1193 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1194 SIZE functions after FROM. */
1195 void (*to_call_history_from) (struct target_ops *,
1196 ULONGEST begin, int size, int flags)
1197 TARGET_DEFAULT_NORETURN (tcomplain ());
1199 /* Print a function trace of an execution trace section from function BEGIN
1200 (inclusive) to function END (inclusive). */
1201 void (*to_call_history_range) (struct target_ops *,
1202 ULONGEST begin, ULONGEST end, int flags)
1203 TARGET_DEFAULT_NORETURN (tcomplain ());
1205 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1207 int (*to_augmented_libraries_svr4_read) (struct target_ops *)
1208 TARGET_DEFAULT_RETURN (0);
1210 /* Those unwinders are tried before any other arch unwinders. If
1211 SELF doesn't have unwinders, it should delegate to the
1212 "beneath" target. */
1213 const struct frame_unwind *(*to_get_unwinder) (struct target_ops *self)
1214 TARGET_DEFAULT_RETURN (NULL);
1216 const struct frame_unwind *(*to_get_tailcall_unwinder) (struct target_ops *self)
1217 TARGET_DEFAULT_RETURN (NULL);
1219 /* Prepare to generate a core file. */
1220 void (*to_prepare_to_generate_core) (struct target_ops *)
1221 TARGET_DEFAULT_IGNORE ();
1223 /* Cleanup after generating a core file. */
1224 void (*to_done_generating_core) (struct target_ops *)
1225 TARGET_DEFAULT_IGNORE ();
1228 /* Need sub-structure for target machine related rather than comm related?
1232 /* Magic number for checking ops size. If a struct doesn't end with this
1233 number, somebody changed the declaration but didn't change all the
1234 places that initialize one. */
1236 #define OPS_MAGIC 3840
1238 /* The ops structure for our "current" target process. This should
1239 never be NULL. If there is no target, it points to the dummy_target. */
1241 extern struct target_ops current_target;
1243 /* Define easy words for doing these operations on our current target. */
1245 #define target_shortname (current_target.to_shortname)
1246 #define target_longname (current_target.to_longname)
1248 /* Does whatever cleanup is required for a target that we are no
1249 longer going to be calling. This routine is automatically always
1250 called after popping the target off the target stack - the target's
1251 own methods are no longer available through the target vector.
1252 Closing file descriptors and freeing all memory allocated memory are
1253 typical things it should do. */
1255 void target_close (struct target_ops *targ);
1257 /* Find the correct target to use for "attach". If a target on the
1258 current stack supports attaching, then it is returned. Otherwise,
1259 the default run target is returned. */
1261 extern struct target_ops *find_attach_target (void);
1263 /* Find the correct target to use for "run". If a target on the
1264 current stack supports creating a new inferior, then it is
1265 returned. Otherwise, the default run target is returned. */
1267 extern struct target_ops *find_run_target (void);
1269 /* Some targets don't generate traps when attaching to the inferior,
1270 or their target_attach implementation takes care of the waiting.
1271 These targets must set to_attach_no_wait. */
1273 #define target_attach_no_wait \
1274 (current_target.to_attach_no_wait)
1276 /* The target_attach operation places a process under debugger control,
1277 and stops the process.
1279 This operation provides a target-specific hook that allows the
1280 necessary bookkeeping to be performed after an attach completes. */
1281 #define target_post_attach(pid) \
1282 (*current_target.to_post_attach) (¤t_target, pid)
1284 /* Takes a program previously attached to and detaches it.
1285 The program may resume execution (some targets do, some don't) and will
1286 no longer stop on signals, etc. We better not have left any breakpoints
1287 in the program or it'll die when it hits one. ARGS is arguments
1288 typed by the user (e.g. a signal to send the process). FROM_TTY
1289 says whether to be verbose or not. */
1291 extern void target_detach (const char *, int);
1293 /* Disconnect from the current target without resuming it (leaving it
1294 waiting for a debugger). */
1296 extern void target_disconnect (const char *, int);
1298 /* Resume execution of the target process PTID (or a group of
1299 threads). STEP says whether to hardware single-step or to run free;
1300 SIGGNAL is the signal to be given to the target, or GDB_SIGNAL_0 for no
1301 signal. The caller may not pass GDB_SIGNAL_DEFAULT. A specific
1302 PTID means `step/resume only this process id'. A wildcard PTID
1303 (all threads, or all threads of process) means `step/resume
1304 INFERIOR_PTID, and let other threads (for which the wildcard PTID
1305 matches) resume with their 'thread->suspend.stop_signal' signal
1306 (usually GDB_SIGNAL_0) if it is in "pass" state, or with no signal
1307 if in "no pass" state. */
1309 extern void target_resume (ptid_t ptid, int step, enum gdb_signal signal);
1311 /* Wait for process pid to do something. PTID = -1 to wait for any
1312 pid to do something. Return pid of child, or -1 in case of error;
1313 store status through argument pointer STATUS. Note that it is
1314 _NOT_ OK to throw_exception() out of target_wait() without popping
1315 the debugging target from the stack; GDB isn't prepared to get back
1316 to the prompt with a debugging target but without the frame cache,
1317 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
1320 extern ptid_t target_wait (ptid_t ptid, struct target_waitstatus *status,
1323 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1325 extern void target_fetch_registers (struct regcache *regcache, int regno);
1327 /* Store at least register REGNO, or all regs if REGNO == -1.
1328 It can store as many registers as it wants to, so target_prepare_to_store
1329 must have been previously called. Calls error() if there are problems. */
1331 extern void target_store_registers (struct regcache *regcache, int regs);
1333 /* Get ready to modify the registers array. On machines which store
1334 individual registers, this doesn't need to do anything. On machines
1335 which store all the registers in one fell swoop, this makes sure
1336 that REGISTERS contains all the registers from the program being
1339 #define target_prepare_to_store(regcache) \
1340 (*current_target.to_prepare_to_store) (¤t_target, regcache)
1342 /* Determine current address space of thread PTID. */
1344 struct address_space *target_thread_address_space (ptid_t);
1346 /* Implement the "info proc" command. This returns one if the request
1347 was handled, and zero otherwise. It can also throw an exception if
1348 an error was encountered while attempting to handle the
1351 int target_info_proc (const char *, enum info_proc_what);
1353 /* Returns true if this target can debug multiple processes
1356 #define target_supports_multi_process() \
1357 (*current_target.to_supports_multi_process) (¤t_target)
1359 /* Returns true if this target can disable address space randomization. */
1361 int target_supports_disable_randomization (void);
1363 /* Returns true if this target can enable and disable tracepoints
1364 while a trace experiment is running. */
1366 #define target_supports_enable_disable_tracepoint() \
1367 (*current_target.to_supports_enable_disable_tracepoint) (¤t_target)
1369 #define target_supports_string_tracing() \
1370 (*current_target.to_supports_string_tracing) (¤t_target)
1372 /* Returns true if this target can handle breakpoint conditions
1375 #define target_supports_evaluation_of_breakpoint_conditions() \
1376 (*current_target.to_supports_evaluation_of_breakpoint_conditions) (¤t_target)
1378 /* Returns true if this target can handle breakpoint commands
1381 #define target_can_run_breakpoint_commands() \
1382 (*current_target.to_can_run_breakpoint_commands) (¤t_target)
1384 extern int target_read_string (CORE_ADDR, char **, int, int *);
1386 /* For target_read_memory see target/target.h. */
1388 extern int target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
1391 extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1393 extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1395 /* For target_write_memory see target/target.h. */
1397 extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
1400 /* Fetches the target's memory map. If one is found it is sorted
1401 and returned, after some consistency checking. Otherwise, NULL
1403 VEC(mem_region_s) *target_memory_map (void);
1405 /* Erase the specified flash region. */
1406 void target_flash_erase (ULONGEST address, LONGEST length);
1408 /* Finish a sequence of flash operations. */
1409 void target_flash_done (void);
1411 /* Describes a request for a memory write operation. */
1412 struct memory_write_request
1414 /* Begining address that must be written. */
1416 /* Past-the-end address. */
1418 /* The data to write. */
1420 /* A callback baton for progress reporting for this request. */
1423 typedef struct memory_write_request memory_write_request_s;
1424 DEF_VEC_O(memory_write_request_s);
1426 /* Enumeration specifying different flash preservation behaviour. */
1427 enum flash_preserve_mode
1433 /* Write several memory blocks at once. This version can be more
1434 efficient than making several calls to target_write_memory, in
1435 particular because it can optimize accesses to flash memory.
1437 Moreover, this is currently the only memory access function in gdb
1438 that supports writing to flash memory, and it should be used for
1439 all cases where access to flash memory is desirable.
1441 REQUESTS is the vector (see vec.h) of memory_write_request.
1442 PRESERVE_FLASH_P indicates what to do with blocks which must be
1443 erased, but not completely rewritten.
1444 PROGRESS_CB is a function that will be periodically called to provide
1445 feedback to user. It will be called with the baton corresponding
1446 to the request currently being written. It may also be called
1447 with a NULL baton, when preserved flash sectors are being rewritten.
1449 The function returns 0 on success, and error otherwise. */
1450 int target_write_memory_blocks (VEC(memory_write_request_s) *requests,
1451 enum flash_preserve_mode preserve_flash_p,
1452 void (*progress_cb) (ULONGEST, void *));
1454 /* Print a line about the current target. */
1456 #define target_files_info() \
1457 (*current_target.to_files_info) (¤t_target)
1459 /* Insert a breakpoint at address BP_TGT->placed_address in
1460 the target machine. Returns 0 for success, and returns non-zero or
1461 throws an error (with a detailed failure reason error code and
1462 message) otherwise. */
1464 extern int target_insert_breakpoint (struct gdbarch *gdbarch,
1465 struct bp_target_info *bp_tgt);
1467 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1468 machine. Result is 0 for success, non-zero for error. */
1470 extern int target_remove_breakpoint (struct gdbarch *gdbarch,
1471 struct bp_target_info *bp_tgt);
1473 /* Returns true if the terminal settings of the inferior are in
1476 extern int target_terminal_is_inferior (void);
1478 /* Initialize the terminal settings we record for the inferior,
1479 before we actually run the inferior. */
1481 extern void target_terminal_init (void);
1483 /* Put the inferior's terminal settings into effect.
1484 This is preparation for starting or resuming the inferior. */
1486 extern void target_terminal_inferior (void);
1488 /* Put some of our terminal settings into effect, enough to get proper
1489 results from our output, but do not change into or out of RAW mode
1490 so that no input is discarded. This is a no-op if terminal_ours
1491 was most recently called. */
1493 extern void target_terminal_ours_for_output (void);
1495 /* Put our terminal settings into effect.
1496 First record the inferior's terminal settings
1497 so they can be restored properly later. */
1499 extern void target_terminal_ours (void);
1501 /* Return true if the target stack has a non-default
1502 "to_terminal_ours" method. */
1504 extern int target_supports_terminal_ours (void);
1506 /* Make a cleanup that restores the state of the terminal to the current
1508 extern struct cleanup *make_cleanup_restore_target_terminal (void);
1510 /* Print useful information about our terminal status, if such a thing
1513 #define target_terminal_info(arg, from_tty) \
1514 (*current_target.to_terminal_info) (¤t_target, arg, from_tty)
1516 /* Kill the inferior process. Make it go away. */
1518 extern void target_kill (void);
1520 /* Load an executable file into the target process. This is expected
1521 to not only bring new code into the target process, but also to
1522 update GDB's symbol tables to match.
1524 ARG contains command-line arguments, to be broken down with
1525 buildargv (). The first non-switch argument is the filename to
1526 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1527 0)), which is an offset to apply to the load addresses of FILE's
1528 sections. The target may define switches, or other non-switch
1529 arguments, as it pleases. */
1531 extern void target_load (const char *arg, int from_tty);
1533 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1534 notification of inferior events such as fork and vork immediately
1535 after the inferior is created. (This because of how gdb gets an
1536 inferior created via invoking a shell to do it. In such a scenario,
1537 if the shell init file has commands in it, the shell will fork and
1538 exec for each of those commands, and we will see each such fork
1541 Such targets will supply an appropriate definition for this function. */
1543 #define target_post_startup_inferior(ptid) \
1544 (*current_target.to_post_startup_inferior) (¤t_target, ptid)
1546 /* On some targets, we can catch an inferior fork or vfork event when
1547 it occurs. These functions insert/remove an already-created
1548 catchpoint for such events. They return 0 for success, 1 if the
1549 catchpoint type is not supported and -1 for failure. */
1551 #define target_insert_fork_catchpoint(pid) \
1552 (*current_target.to_insert_fork_catchpoint) (¤t_target, pid)
1554 #define target_remove_fork_catchpoint(pid) \
1555 (*current_target.to_remove_fork_catchpoint) (¤t_target, pid)
1557 #define target_insert_vfork_catchpoint(pid) \
1558 (*current_target.to_insert_vfork_catchpoint) (¤t_target, pid)
1560 #define target_remove_vfork_catchpoint(pid) \
1561 (*current_target.to_remove_vfork_catchpoint) (¤t_target, pid)
1563 /* If the inferior forks or vforks, this function will be called at
1564 the next resume in order to perform any bookkeeping and fiddling
1565 necessary to continue debugging either the parent or child, as
1566 requested, and releasing the other. Information about the fork
1567 or vfork event is available via get_last_target_status ().
1568 This function returns 1 if the inferior should not be resumed
1569 (i.e. there is another event pending). */
1571 int target_follow_fork (int follow_child, int detach_fork);
1573 /* On some targets, we can catch an inferior exec event when it
1574 occurs. These functions insert/remove an already-created
1575 catchpoint for such events. They return 0 for success, 1 if the
1576 catchpoint type is not supported and -1 for failure. */
1578 #define target_insert_exec_catchpoint(pid) \
1579 (*current_target.to_insert_exec_catchpoint) (¤t_target, pid)
1581 #define target_remove_exec_catchpoint(pid) \
1582 (*current_target.to_remove_exec_catchpoint) (¤t_target, pid)
1586 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1587 If NEEDED is zero, it means the target can disable the mechanism to
1588 catch system calls because there are no more catchpoints of this type.
1590 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1591 being requested. In this case, both TABLE_SIZE and TABLE should
1594 TABLE_SIZE is the number of elements in TABLE. It only matters if
1597 TABLE is an array of ints, indexed by syscall number. An element in
1598 this array is nonzero if that syscall should be caught. This argument
1599 only matters if ANY_COUNT is zero.
1601 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1604 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1605 (*current_target.to_set_syscall_catchpoint) (¤t_target, \
1606 pid, needed, any_count, \
1609 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1610 exit code of PID, if any. */
1612 #define target_has_exited(pid,wait_status,exit_status) \
1613 (*current_target.to_has_exited) (¤t_target, \
1614 pid,wait_status,exit_status)
1616 /* The debugger has completed a blocking wait() call. There is now
1617 some process event that must be processed. This function should
1618 be defined by those targets that require the debugger to perform
1619 cleanup or internal state changes in response to the process event. */
1621 /* The inferior process has died. Do what is right. */
1623 void target_mourn_inferior (void);
1625 /* Does target have enough data to do a run or attach command? */
1627 #define target_can_run(t) \
1628 ((t)->to_can_run) (t)
1630 /* Set list of signals to be handled in the target.
1632 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1633 (enum gdb_signal). For every signal whose entry in this array is
1634 non-zero, the target is allowed -but not required- to skip reporting
1635 arrival of the signal to the GDB core by returning from target_wait,
1636 and to pass the signal directly to the inferior instead.
1638 However, if the target is hardware single-stepping a thread that is
1639 about to receive a signal, it needs to be reported in any case, even
1640 if mentioned in a previous target_pass_signals call. */
1642 extern void target_pass_signals (int nsig, unsigned char *pass_signals);
1644 /* Set list of signals the target may pass to the inferior. This
1645 directly maps to the "handle SIGNAL pass/nopass" setting.
1647 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1648 number (enum gdb_signal). For every signal whose entry in this
1649 array is non-zero, the target is allowed to pass the signal to the
1650 inferior. Signals not present in the array shall be silently
1651 discarded. This does not influence whether to pass signals to the
1652 inferior as a result of a target_resume call. This is useful in
1653 scenarios where the target needs to decide whether to pass or not a
1654 signal to the inferior without GDB core involvement, such as for
1655 example, when detaching (as threads may have been suspended with
1656 pending signals not reported to GDB). */
1658 extern void target_program_signals (int nsig, unsigned char *program_signals);
1660 /* Check to see if a thread is still alive. */
1662 extern int target_thread_alive (ptid_t ptid);
1664 /* Sync the target's threads with GDB's thread list. */
1666 extern void target_update_thread_list (void);
1668 /* Make target stop in a continuable fashion. (For instance, under
1669 Unix, this should act like SIGSTOP). Note that this function is
1670 asynchronous: it does not wait for the target to become stopped
1671 before returning. If this is the behavior you want please use
1672 target_stop_and_wait. */
1674 extern void target_stop (ptid_t ptid);
1676 /* Send the specified COMMAND to the target's monitor
1677 (shell,interpreter) for execution. The result of the query is
1678 placed in OUTBUF. */
1680 #define target_rcmd(command, outbuf) \
1681 (*current_target.to_rcmd) (¤t_target, command, outbuf)
1684 /* Does the target include all of memory, or only part of it? This
1685 determines whether we look up the target chain for other parts of
1686 memory if this target can't satisfy a request. */
1688 extern int target_has_all_memory_1 (void);
1689 #define target_has_all_memory target_has_all_memory_1 ()
1691 /* Does the target include memory? (Dummy targets don't.) */
1693 extern int target_has_memory_1 (void);
1694 #define target_has_memory target_has_memory_1 ()
1696 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1697 we start a process.) */
1699 extern int target_has_stack_1 (void);
1700 #define target_has_stack target_has_stack_1 ()
1702 /* Does the target have registers? (Exec files don't.) */
1704 extern int target_has_registers_1 (void);
1705 #define target_has_registers target_has_registers_1 ()
1707 /* Does the target have execution? Can we make it jump (through
1708 hoops), or pop its stack a few times? This means that the current
1709 target is currently executing; for some targets, that's the same as
1710 whether or not the target is capable of execution, but there are
1711 also targets which can be current while not executing. In that
1712 case this will become true after to_create_inferior or
1715 extern int target_has_execution_1 (ptid_t);
1717 /* Like target_has_execution_1, but always passes inferior_ptid. */
1719 extern int target_has_execution_current (void);
1721 #define target_has_execution target_has_execution_current ()
1723 /* Default implementations for process_stratum targets. Return true
1724 if there's a selected inferior, false otherwise. */
1726 extern int default_child_has_all_memory (struct target_ops *ops);
1727 extern int default_child_has_memory (struct target_ops *ops);
1728 extern int default_child_has_stack (struct target_ops *ops);
1729 extern int default_child_has_registers (struct target_ops *ops);
1730 extern int default_child_has_execution (struct target_ops *ops,
1733 /* Can the target support the debugger control of thread execution?
1734 Can it lock the thread scheduler? */
1736 #define target_can_lock_scheduler \
1737 (current_target.to_has_thread_control & tc_schedlock)
1739 /* Controls whether async mode is permitted. */
1740 extern int target_async_permitted;
1742 /* Can the target support asynchronous execution? */
1743 #define target_can_async_p() (current_target.to_can_async_p (¤t_target))
1745 /* Is the target in asynchronous execution mode? */
1746 #define target_is_async_p() (current_target.to_is_async_p (¤t_target))
1748 /* Enables/disabled async target events. */
1749 extern void target_async (int enable);
1751 /* Whether support for controlling the target backends always in
1752 non-stop mode is enabled. */
1753 extern enum auto_boolean target_non_stop_enabled;
1755 /* Is the target in non-stop mode? Some targets control the inferior
1756 in non-stop mode even with "set non-stop off". Always true if "set
1758 extern int target_is_non_stop_p (void);
1760 #define target_execution_direction() \
1761 (current_target.to_execution_direction (¤t_target))
1763 /* Converts a process id to a string. Usually, the string just contains
1764 `process xyz', but on some systems it may contain
1765 `process xyz thread abc'. */
1767 extern char *target_pid_to_str (ptid_t ptid);
1769 extern char *normal_pid_to_str (ptid_t ptid);
1771 /* Return a short string describing extra information about PID,
1772 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1775 #define target_extra_thread_info(TP) \
1776 (current_target.to_extra_thread_info (¤t_target, TP))
1778 /* Return the thread's name. A NULL result means that the target
1779 could not determine this thread's name. */
1781 extern char *target_thread_name (struct thread_info *);
1783 /* Attempts to find the pathname of the executable file
1784 that was run to create a specified process.
1786 The process PID must be stopped when this operation is used.
1788 If the executable file cannot be determined, NULL is returned.
1790 Else, a pointer to a character string containing the pathname
1791 is returned. This string should be copied into a buffer by
1792 the client if the string will not be immediately used, or if
1795 #define target_pid_to_exec_file(pid) \
1796 (current_target.to_pid_to_exec_file) (¤t_target, pid)
1798 /* See the to_thread_architecture description in struct target_ops. */
1800 #define target_thread_architecture(ptid) \
1801 (current_target.to_thread_architecture (¤t_target, ptid))
1804 * Iterator function for target memory regions.
1805 * Calls a callback function once for each memory region 'mapped'
1806 * in the child process. Defined as a simple macro rather than
1807 * as a function macro so that it can be tested for nullity.
1810 #define target_find_memory_regions(FUNC, DATA) \
1811 (current_target.to_find_memory_regions) (¤t_target, FUNC, DATA)
1814 * Compose corefile .note section.
1817 #define target_make_corefile_notes(BFD, SIZE_P) \
1818 (current_target.to_make_corefile_notes) (¤t_target, BFD, SIZE_P)
1820 /* Bookmark interfaces. */
1821 #define target_get_bookmark(ARGS, FROM_TTY) \
1822 (current_target.to_get_bookmark) (¤t_target, ARGS, FROM_TTY)
1824 #define target_goto_bookmark(ARG, FROM_TTY) \
1825 (current_target.to_goto_bookmark) (¤t_target, ARG, FROM_TTY)
1827 /* Hardware watchpoint interfaces. */
1829 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1830 write). Only the INFERIOR_PTID task is being queried. */
1832 #define target_stopped_by_watchpoint() \
1833 ((*current_target.to_stopped_by_watchpoint) (¤t_target))
1835 /* Returns non-zero if the target stopped because it executed a
1836 software breakpoint instruction. */
1838 #define target_stopped_by_sw_breakpoint() \
1839 ((*current_target.to_stopped_by_sw_breakpoint) (¤t_target))
1841 #define target_supports_stopped_by_sw_breakpoint() \
1842 ((*current_target.to_supports_stopped_by_sw_breakpoint) (¤t_target))
1844 #define target_stopped_by_hw_breakpoint() \
1845 ((*current_target.to_stopped_by_hw_breakpoint) (¤t_target))
1847 #define target_supports_stopped_by_hw_breakpoint() \
1848 ((*current_target.to_supports_stopped_by_hw_breakpoint) (¤t_target))
1850 /* Non-zero if we have steppable watchpoints */
1852 #define target_have_steppable_watchpoint \
1853 (current_target.to_have_steppable_watchpoint)
1855 /* Non-zero if we have continuable watchpoints */
1857 #define target_have_continuable_watchpoint \
1858 (current_target.to_have_continuable_watchpoint)
1860 /* Provide defaults for hardware watchpoint functions. */
1862 /* If the *_hw_beakpoint functions have not been defined
1863 elsewhere use the definitions in the target vector. */
1865 /* Returns positive if we can set a hardware watchpoint of type TYPE.
1866 Returns negative if the target doesn't have enough hardware debug
1867 registers available. Return zero if hardware watchpoint of type
1868 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
1869 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
1870 CNT is the number of such watchpoints used so far, including this
1871 one. OTHERTYPE is who knows what... */
1873 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1874 (*current_target.to_can_use_hw_breakpoint) (¤t_target, \
1875 TYPE, CNT, OTHERTYPE)
1877 /* Returns the number of debug registers needed to watch the given
1878 memory region, or zero if not supported. */
1880 #define target_region_ok_for_hw_watchpoint(addr, len) \
1881 (*current_target.to_region_ok_for_hw_watchpoint) (¤t_target, \
1885 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1886 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1887 COND is the expression for its condition, or NULL if there's none.
1888 Returns 0 for success, 1 if the watchpoint type is not supported,
1891 #define target_insert_watchpoint(addr, len, type, cond) \
1892 (*current_target.to_insert_watchpoint) (¤t_target, \
1893 addr, len, type, cond)
1895 #define target_remove_watchpoint(addr, len, type, cond) \
1896 (*current_target.to_remove_watchpoint) (¤t_target, \
1897 addr, len, type, cond)
1899 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1900 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1901 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1902 masked watchpoints are not supported, -1 for failure. */
1904 extern int target_insert_mask_watchpoint (CORE_ADDR, CORE_ADDR, int);
1906 /* Remove a masked watchpoint at ADDR with the mask MASK.
1907 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1908 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1911 extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR, int);
1913 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1914 the target machine. Returns 0 for success, and returns non-zero or
1915 throws an error (with a detailed failure reason error code and
1916 message) otherwise. */
1918 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1919 (*current_target.to_insert_hw_breakpoint) (¤t_target, \
1922 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1923 (*current_target.to_remove_hw_breakpoint) (¤t_target, \
1926 /* Return number of debug registers needed for a ranged breakpoint,
1927 or -1 if ranged breakpoints are not supported. */
1929 extern int target_ranged_break_num_registers (void);
1931 /* Return non-zero if target knows the data address which triggered this
1932 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1933 INFERIOR_PTID task is being queried. */
1934 #define target_stopped_data_address(target, addr_p) \
1935 (*(target)->to_stopped_data_address) (target, addr_p)
1937 /* Return non-zero if ADDR is within the range of a watchpoint spanning
1938 LENGTH bytes beginning at START. */
1939 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1940 (*(target)->to_watchpoint_addr_within_range) (target, addr, start, length)
1942 /* Return non-zero if the target is capable of using hardware to evaluate
1943 the condition expression. In this case, if the condition is false when
1944 the watched memory location changes, execution may continue without the
1945 debugger being notified.
1947 Due to limitations in the hardware implementation, it may be capable of
1948 avoiding triggering the watchpoint in some cases where the condition
1949 expression is false, but may report some false positives as well.
1950 For this reason, GDB will still evaluate the condition expression when
1951 the watchpoint triggers. */
1952 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1953 (*current_target.to_can_accel_watchpoint_condition) (¤t_target, \
1954 addr, len, type, cond)
1956 /* Return number of debug registers needed for a masked watchpoint,
1957 -1 if masked watchpoints are not supported or -2 if the given address
1958 and mask combination cannot be used. */
1960 extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask);
1962 /* Target can execute in reverse? */
1963 #define target_can_execute_reverse \
1964 current_target.to_can_execute_reverse (¤t_target)
1966 extern const struct target_desc *target_read_description (struct target_ops *);
1968 #define target_get_ada_task_ptid(lwp, tid) \
1969 (*current_target.to_get_ada_task_ptid) (¤t_target, lwp,tid)
1971 /* Utility implementation of searching memory. */
1972 extern int simple_search_memory (struct target_ops* ops,
1973 CORE_ADDR start_addr,
1974 ULONGEST search_space_len,
1975 const gdb_byte *pattern,
1976 ULONGEST pattern_len,
1977 CORE_ADDR *found_addrp);
1979 /* Main entry point for searching memory. */
1980 extern int target_search_memory (CORE_ADDR start_addr,
1981 ULONGEST search_space_len,
1982 const gdb_byte *pattern,
1983 ULONGEST pattern_len,
1984 CORE_ADDR *found_addrp);
1986 /* Target file operations. */
1988 /* Return nonzero if the filesystem seen by the current inferior
1989 is the local filesystem, zero otherwise. */
1990 #define target_filesystem_is_local() \
1991 current_target.to_filesystem_is_local (¤t_target)
1993 /* Open FILENAME on the target, in the filesystem as seen by INF,
1994 using FLAGS and MODE. If INF is NULL, use the filesystem seen
1995 by the debugger (GDB or, for remote targets, the remote stub).
1996 Return a target file descriptor, or -1 if an error occurs (and
1997 set *TARGET_ERRNO). */
1998 extern int target_fileio_open (struct inferior *inf,
1999 const char *filename, int flags,
2000 int mode, int *target_errno);
2002 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2003 Return the number of bytes written, or -1 if an error occurs
2004 (and set *TARGET_ERRNO). */
2005 extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
2006 ULONGEST offset, int *target_errno);
2008 /* Read up to LEN bytes FD on the target into READ_BUF.
2009 Return the number of bytes read, or -1 if an error occurs
2010 (and set *TARGET_ERRNO). */
2011 extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len,
2012 ULONGEST offset, int *target_errno);
2014 /* Get information about the file opened as FD on the target
2015 and put it in SB. Return 0 on success, or -1 if an error
2016 occurs (and set *TARGET_ERRNO). */
2017 extern int target_fileio_fstat (int fd, struct stat *sb,
2020 /* Close FD on the target. Return 0, or -1 if an error occurs
2021 (and set *TARGET_ERRNO). */
2022 extern int target_fileio_close (int fd, int *target_errno);
2024 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2025 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2026 for remote targets, the remote stub). Return 0, or -1 if an error
2027 occurs (and set *TARGET_ERRNO). */
2028 extern int target_fileio_unlink (struct inferior *inf,
2029 const char *filename,
2032 /* Read value of symbolic link FILENAME on the target, in the
2033 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2034 by the debugger (GDB or, for remote targets, the remote stub).
2035 Return a null-terminated string allocated via xmalloc, or NULL if
2036 an error occurs (and set *TARGET_ERRNO). */
2037 extern char *target_fileio_readlink (struct inferior *inf,
2038 const char *filename,
2041 /* Read target file FILENAME, in the filesystem as seen by INF. If
2042 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2043 remote targets, the remote stub). The return value will be -1 if
2044 the transfer fails or is not supported; 0 if the object is empty;
2045 or the length of the object otherwise. If a positive value is
2046 returned, a sufficiently large buffer will be allocated using
2047 xmalloc and returned in *BUF_P containing the contents of the
2050 This method should be used for objects sufficiently small to store
2051 in a single xmalloc'd buffer, when no fixed bound on the object's
2052 size is known in advance. */
2053 extern LONGEST target_fileio_read_alloc (struct inferior *inf,
2054 const char *filename,
2057 /* Read target file FILENAME, in the filesystem as seen by INF. If
2058 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2059 remote targets, the remote stub). The result is NUL-terminated and
2060 returned as a string, allocated using xmalloc. If an error occurs
2061 or the transfer is unsupported, NULL is returned. Empty objects
2062 are returned as allocated but empty strings. A warning is issued
2063 if the result contains any embedded NUL bytes. */
2064 extern char *target_fileio_read_stralloc (struct inferior *inf,
2065 const char *filename);
2068 /* Tracepoint-related operations. */
2070 #define target_trace_init() \
2071 (*current_target.to_trace_init) (¤t_target)
2073 #define target_download_tracepoint(t) \
2074 (*current_target.to_download_tracepoint) (¤t_target, t)
2076 #define target_can_download_tracepoint() \
2077 (*current_target.to_can_download_tracepoint) (¤t_target)
2079 #define target_download_trace_state_variable(tsv) \
2080 (*current_target.to_download_trace_state_variable) (¤t_target, tsv)
2082 #define target_enable_tracepoint(loc) \
2083 (*current_target.to_enable_tracepoint) (¤t_target, loc)
2085 #define target_disable_tracepoint(loc) \
2086 (*current_target.to_disable_tracepoint) (¤t_target, loc)
2088 #define target_trace_start() \
2089 (*current_target.to_trace_start) (¤t_target)
2091 #define target_trace_set_readonly_regions() \
2092 (*current_target.to_trace_set_readonly_regions) (¤t_target)
2094 #define target_get_trace_status(ts) \
2095 (*current_target.to_get_trace_status) (¤t_target, ts)
2097 #define target_get_tracepoint_status(tp,utp) \
2098 (*current_target.to_get_tracepoint_status) (¤t_target, tp, utp)
2100 #define target_trace_stop() \
2101 (*current_target.to_trace_stop) (¤t_target)
2103 #define target_trace_find(type,num,addr1,addr2,tpp) \
2104 (*current_target.to_trace_find) (¤t_target, \
2105 (type), (num), (addr1), (addr2), (tpp))
2107 #define target_get_trace_state_variable_value(tsv,val) \
2108 (*current_target.to_get_trace_state_variable_value) (¤t_target, \
2111 #define target_save_trace_data(filename) \
2112 (*current_target.to_save_trace_data) (¤t_target, filename)
2114 #define target_upload_tracepoints(utpp) \
2115 (*current_target.to_upload_tracepoints) (¤t_target, utpp)
2117 #define target_upload_trace_state_variables(utsvp) \
2118 (*current_target.to_upload_trace_state_variables) (¤t_target, utsvp)
2120 #define target_get_raw_trace_data(buf,offset,len) \
2121 (*current_target.to_get_raw_trace_data) (¤t_target, \
2122 (buf), (offset), (len))
2124 #define target_get_min_fast_tracepoint_insn_len() \
2125 (*current_target.to_get_min_fast_tracepoint_insn_len) (¤t_target)
2127 #define target_set_disconnected_tracing(val) \
2128 (*current_target.to_set_disconnected_tracing) (¤t_target, val)
2130 #define target_set_circular_trace_buffer(val) \
2131 (*current_target.to_set_circular_trace_buffer) (¤t_target, val)
2133 #define target_set_trace_buffer_size(val) \
2134 (*current_target.to_set_trace_buffer_size) (¤t_target, val)
2136 #define target_set_trace_notes(user,notes,stopnotes) \
2137 (*current_target.to_set_trace_notes) (¤t_target, \
2138 (user), (notes), (stopnotes))
2140 #define target_get_tib_address(ptid, addr) \
2141 (*current_target.to_get_tib_address) (¤t_target, (ptid), (addr))
2143 #define target_set_permissions() \
2144 (*current_target.to_set_permissions) (¤t_target)
2146 #define target_static_tracepoint_marker_at(addr, marker) \
2147 (*current_target.to_static_tracepoint_marker_at) (¤t_target, \
2150 #define target_static_tracepoint_markers_by_strid(marker_id) \
2151 (*current_target.to_static_tracepoint_markers_by_strid) (¤t_target, \
2154 #define target_traceframe_info() \
2155 (*current_target.to_traceframe_info) (¤t_target)
2157 #define target_use_agent(use) \
2158 (*current_target.to_use_agent) (¤t_target, use)
2160 #define target_can_use_agent() \
2161 (*current_target.to_can_use_agent) (¤t_target)
2163 #define target_augmented_libraries_svr4_read() \
2164 (*current_target.to_augmented_libraries_svr4_read) (¤t_target)
2166 /* Command logging facility. */
2168 #define target_log_command(p) \
2169 (*current_target.to_log_command) (¤t_target, p)
2172 extern int target_core_of_thread (ptid_t ptid);
2174 /* See to_get_unwinder in struct target_ops. */
2175 extern const struct frame_unwind *target_get_unwinder (void);
2177 /* See to_get_tailcall_unwinder in struct target_ops. */
2178 extern const struct frame_unwind *target_get_tailcall_unwinder (void);
2180 /* This implements basic memory verification, reading target memory
2181 and performing the comparison here (as opposed to accelerated
2182 verification making use of the qCRC packet, for example). */
2184 extern int simple_verify_memory (struct target_ops* ops,
2185 const gdb_byte *data,
2186 CORE_ADDR memaddr, ULONGEST size);
2188 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2189 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2190 if there's a mismatch, and -1 if an error is encountered while
2191 reading memory. Throws an error if the functionality is found not
2192 to be supported by the current target. */
2193 int target_verify_memory (const gdb_byte *data,
2194 CORE_ADDR memaddr, ULONGEST size);
2196 /* Routines for maintenance of the target structures...
2198 complete_target_initialization: Finalize a target_ops by filling in
2199 any fields needed by the target implementation. Unnecessary for
2200 targets which are registered via add_target, as this part gets
2203 add_target: Add a target to the list of all possible targets.
2204 This only makes sense for targets that should be activated using
2205 the "target TARGET_NAME ..." command.
2207 push_target: Make this target the top of the stack of currently used
2208 targets, within its particular stratum of the stack. Result
2209 is 0 if now atop the stack, nonzero if not on top (maybe
2212 unpush_target: Remove this from the stack of currently used targets,
2213 no matter where it is on the list. Returns 0 if no
2214 change, 1 if removed from stack. */
2216 extern void add_target (struct target_ops *);
2218 extern void add_target_with_completer (struct target_ops *t,
2219 completer_ftype *completer);
2221 extern void complete_target_initialization (struct target_ops *t);
2223 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
2224 for maintaining backwards compatibility when renaming targets. */
2226 extern void add_deprecated_target_alias (struct target_ops *t, char *alias);
2228 extern void push_target (struct target_ops *);
2230 extern int unpush_target (struct target_ops *);
2232 extern void target_pre_inferior (int);
2234 extern void target_preopen (int);
2236 /* Does whatever cleanup is required to get rid of all pushed targets. */
2237 extern void pop_all_targets (void);
2239 /* Like pop_all_targets, but pops only targets whose stratum is
2240 strictly above ABOVE_STRATUM. */
2241 extern void pop_all_targets_above (enum strata above_stratum);
2243 extern int target_is_pushed (struct target_ops *t);
2245 extern CORE_ADDR target_translate_tls_address (struct objfile *objfile,
2248 /* Struct target_section maps address ranges to file sections. It is
2249 mostly used with BFD files, but can be used without (e.g. for handling
2250 raw disks, or files not in formats handled by BFD). */
2252 struct target_section
2254 CORE_ADDR addr; /* Lowest address in section */
2255 CORE_ADDR endaddr; /* 1+highest address in section */
2257 struct bfd_section *the_bfd_section;
2259 /* The "owner" of the section.
2260 It can be any unique value. It is set by add_target_sections
2261 and used by remove_target_sections.
2262 For example, for executables it is a pointer to exec_bfd and
2263 for shlibs it is the so_list pointer. */
2267 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2269 struct target_section_table
2271 struct target_section *sections;
2272 struct target_section *sections_end;
2275 /* Return the "section" containing the specified address. */
2276 struct target_section *target_section_by_addr (struct target_ops *target,
2279 /* Return the target section table this target (or the targets
2280 beneath) currently manipulate. */
2282 extern struct target_section_table *target_get_section_table
2283 (struct target_ops *target);
2285 /* From mem-break.c */
2287 extern int memory_remove_breakpoint (struct target_ops *, struct gdbarch *,
2288 struct bp_target_info *);
2290 extern int memory_insert_breakpoint (struct target_ops *, struct gdbarch *,
2291 struct bp_target_info *);
2293 /* Check whether the memory at the breakpoint's placed address still
2294 contains the expected breakpoint instruction. */
2296 extern int memory_validate_breakpoint (struct gdbarch *gdbarch,
2297 struct bp_target_info *bp_tgt);
2299 extern int default_memory_remove_breakpoint (struct gdbarch *,
2300 struct bp_target_info *);
2302 extern int default_memory_insert_breakpoint (struct gdbarch *,
2303 struct bp_target_info *);
2308 extern void initialize_targets (void);
2310 extern void noprocess (void) ATTRIBUTE_NORETURN;
2312 extern void target_require_runnable (void);
2314 extern struct target_ops *find_target_beneath (struct target_ops *);
2316 /* Find the target at STRATUM. If no target is at that stratum,
2319 struct target_ops *find_target_at (enum strata stratum);
2321 /* Read OS data object of type TYPE from the target, and return it in
2322 XML format. The result is NUL-terminated and returned as a string,
2323 allocated using xmalloc. If an error occurs or the transfer is
2324 unsupported, NULL is returned. Empty objects are returned as
2325 allocated but empty strings. */
2327 extern char *target_get_osdata (const char *type);
2330 /* Stuff that should be shared among the various remote targets. */
2332 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2333 information (higher values, more information). */
2334 extern int remote_debug;
2336 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2337 extern int baud_rate;
2339 /* Parity for serial port */
2340 extern int serial_parity;
2342 /* Timeout limit for response from target. */
2343 extern int remote_timeout;
2347 /* Set the show memory breakpoints mode to show, and installs a cleanup
2348 to restore it back to the current value. */
2349 extern struct cleanup *make_show_memory_breakpoints_cleanup (int show);
2351 extern int may_write_registers;
2352 extern int may_write_memory;
2353 extern int may_insert_breakpoints;
2354 extern int may_insert_tracepoints;
2355 extern int may_insert_fast_tracepoints;
2356 extern int may_stop;
2358 extern void update_target_permissions (void);
2361 /* Imported from machine dependent code. */
2363 /* See to_supports_btrace in struct target_ops. */
2364 extern int target_supports_btrace (enum btrace_format);
2366 /* See to_enable_btrace in struct target_ops. */
2367 extern struct btrace_target_info *
2368 target_enable_btrace (ptid_t ptid, const struct btrace_config *);
2370 /* See to_disable_btrace in struct target_ops. */
2371 extern void target_disable_btrace (struct btrace_target_info *btinfo);
2373 /* See to_teardown_btrace in struct target_ops. */
2374 extern void target_teardown_btrace (struct btrace_target_info *btinfo);
2376 /* See to_read_btrace in struct target_ops. */
2377 extern enum btrace_error target_read_btrace (struct btrace_data *,
2378 struct btrace_target_info *,
2379 enum btrace_read_type);
2381 /* See to_btrace_conf in struct target_ops. */
2382 extern const struct btrace_config *
2383 target_btrace_conf (const struct btrace_target_info *);
2385 /* See to_stop_recording in struct target_ops. */
2386 extern void target_stop_recording (void);
2388 /* See to_save_record in struct target_ops. */
2389 extern void target_save_record (const char *filename);
2391 /* Query if the target supports deleting the execution log. */
2392 extern int target_supports_delete_record (void);
2394 /* See to_delete_record in struct target_ops. */
2395 extern void target_delete_record (void);
2397 /* See to_record_is_replaying in struct target_ops. */
2398 extern int target_record_is_replaying (void);
2400 /* See to_goto_record_begin in struct target_ops. */
2401 extern void target_goto_record_begin (void);
2403 /* See to_goto_record_end in struct target_ops. */
2404 extern void target_goto_record_end (void);
2406 /* See to_goto_record in struct target_ops. */
2407 extern void target_goto_record (ULONGEST insn);
2409 /* See to_insn_history. */
2410 extern void target_insn_history (int size, int flags);
2412 /* See to_insn_history_from. */
2413 extern void target_insn_history_from (ULONGEST from, int size, int flags);
2415 /* See to_insn_history_range. */
2416 extern void target_insn_history_range (ULONGEST begin, ULONGEST end, int flags);
2418 /* See to_call_history. */
2419 extern void target_call_history (int size, int flags);
2421 /* See to_call_history_from. */
2422 extern void target_call_history_from (ULONGEST begin, int size, int flags);
2424 /* See to_call_history_range. */
2425 extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags);
2427 /* See to_prepare_to_generate_core. */
2428 extern void target_prepare_to_generate_core (void);
2430 /* See to_done_generating_core. */
2431 extern void target_done_generating_core (void);
2433 #endif /* !defined (TARGET_H) */