1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support. Written by John Gilmore.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #if !defined (TARGET_H)
31 struct bp_target_info
;
33 struct target_section_table
;
34 struct trace_state_variable
;
36 /* This include file defines the interface between the main part
37 of the debugger, and the part which is target-specific, or
38 specific to the communications interface between us and the
41 A TARGET is an interface between the debugger and a particular
42 kind of file or process. Targets can be STACKED in STRATA,
43 so that more than one target can potentially respond to a request.
44 In particular, memory accesses will walk down the stack of targets
45 until they find a target that is interested in handling that particular
46 address. STRATA are artificial boundaries on the stack, within
47 which particular kinds of targets live. Strata exist so that
48 people don't get confused by pushing e.g. a process target and then
49 a file target, and wondering why they can't see the current values
50 of variables any more (the file target is handling them and they
51 never get to the process target). So when you push a file target,
52 it goes into the file stratum, which is always below the process
59 #include "gdb_signals.h"
63 dummy_stratum
, /* The lowest of the low */
64 file_stratum
, /* Executable files, etc */
65 core_stratum
, /* Core dump files */
66 process_stratum
, /* Executing processes */
67 thread_stratum
, /* Executing threads */
68 record_stratum
, /* Support record debugging */
69 arch_stratum
/* Architecture overrides */
72 enum thread_control_capabilities
74 tc_none
= 0, /* Default: can't control thread execution. */
75 tc_schedlock
= 1, /* Can lock the thread scheduler. */
78 /* Stuff for target_wait. */
80 /* Generally, what has the program done? */
83 /* The program has exited. The exit status is in value.integer. */
84 TARGET_WAITKIND_EXITED
,
86 /* The program has stopped with a signal. Which signal is in
88 TARGET_WAITKIND_STOPPED
,
90 /* The program has terminated with a signal. Which signal is in
92 TARGET_WAITKIND_SIGNALLED
,
94 /* The program is letting us know that it dynamically loaded something
95 (e.g. it called load(2) on AIX). */
96 TARGET_WAITKIND_LOADED
,
98 /* The program has forked. A "related" process' PTID is in
99 value.related_pid. I.e., if the child forks, value.related_pid
100 is the parent's ID. */
102 TARGET_WAITKIND_FORKED
,
104 /* The program has vforked. A "related" process's PTID is in
105 value.related_pid. */
107 TARGET_WAITKIND_VFORKED
,
109 /* The program has exec'ed a new executable file. The new file's
110 pathname is pointed to by value.execd_pathname. */
112 TARGET_WAITKIND_EXECD
,
114 /* The program had previously vforked, and now the child is done
115 with the shared memory region, because it exec'ed or exited.
116 Note that the event is reported to the vfork parent. This is
117 only used if GDB did not stay attached to the vfork child,
118 otherwise, a TARGET_WAITKIND_EXECD or
119 TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
120 has the same effect. */
121 TARGET_WAITKIND_VFORK_DONE
,
123 /* The program has entered or returned from a system call. On
124 HP-UX, this is used in the hardware watchpoint implementation.
125 The syscall's unique integer ID number is in value.syscall_id */
127 TARGET_WAITKIND_SYSCALL_ENTRY
,
128 TARGET_WAITKIND_SYSCALL_RETURN
,
130 /* Nothing happened, but we stopped anyway. This perhaps should be handled
131 within target_wait, but I'm not sure target_wait should be resuming the
133 TARGET_WAITKIND_SPURIOUS
,
135 /* An event has occured, but we should wait again.
136 Remote_async_wait() returns this when there is an event
137 on the inferior, but the rest of the world is not interested in
138 it. The inferior has not stopped, but has just sent some output
139 to the console, for instance. In this case, we want to go back
140 to the event loop and wait there for another event from the
141 inferior, rather than being stuck in the remote_async_wait()
142 function. This way the event loop is responsive to other events,
143 like for instance the user typing. */
144 TARGET_WAITKIND_IGNORE
,
146 /* The target has run out of history information,
147 and cannot run backward any further. */
148 TARGET_WAITKIND_NO_HISTORY
151 struct target_waitstatus
153 enum target_waitkind kind
;
155 /* Forked child pid, execd pathname, exit status, signal number or
160 enum target_signal sig
;
162 char *execd_pathname
;
168 /* Options that can be passed to target_wait. */
170 /* Return immediately if there's no event already queued. If this
171 options is not requested, target_wait blocks waiting for an
173 #define TARGET_WNOHANG 1
175 /* The structure below stores information about a system call.
176 It is basically used in the "catch syscall" command, and in
177 every function that gives information about a system call.
179 It's also good to mention that its fields represent everything
180 that we currently know about a syscall in GDB. */
183 /* The syscall number. */
186 /* The syscall name. */
190 /* Return a pretty printed form of target_waitstatus.
191 Space for the result is malloc'd, caller must free. */
192 extern char *target_waitstatus_to_string (const struct target_waitstatus
*);
194 /* Possible types of events that the inferior handler will have to
196 enum inferior_event_type
198 /* There is a request to quit the inferior, abandon it. */
200 /* Process a normal inferior event which will result in target_wait
203 /* Deal with an error on the inferior. */
205 /* We are called because a timer went off. */
207 /* We are called to do stuff after the inferior stops. */
209 /* We are called to do some stuff after the inferior stops, but we
210 are expected to reenter the proceed() and
211 handle_inferior_event() functions. This is used only in case of
212 'step n' like commands. */
216 /* Target objects which can be transfered using target_read,
217 target_write, et cetera. */
221 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
223 /* SPU target specific transfer. See "spu-tdep.c". */
225 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
226 TARGET_OBJECT_MEMORY
,
227 /* Memory, avoiding GDB's data cache and trusting the executable.
228 Target implementations of to_xfer_partial never need to handle
229 this object, and most callers should not use it. */
230 TARGET_OBJECT_RAW_MEMORY
,
231 /* Memory known to be part of the target's stack. This is cached even
232 if it is not in a region marked as such, since it is known to be
234 TARGET_OBJECT_STACK_MEMORY
,
235 /* Kernel Unwind Table. See "ia64-tdep.c". */
236 TARGET_OBJECT_UNWIND_TABLE
,
237 /* Transfer auxilliary vector. */
239 /* StackGhost cookie. See "sparc-tdep.c". */
240 TARGET_OBJECT_WCOOKIE
,
241 /* Target memory map in XML format. */
242 TARGET_OBJECT_MEMORY_MAP
,
243 /* Flash memory. This object can be used to write contents to
244 a previously erased flash memory. Using it without erasing
245 flash can have unexpected results. Addresses are physical
246 address on target, and not relative to flash start. */
248 /* Available target-specific features, e.g. registers and coprocessors.
249 See "target-descriptions.c". ANNEX should never be empty. */
250 TARGET_OBJECT_AVAILABLE_FEATURES
,
251 /* Currently loaded libraries, in XML format. */
252 TARGET_OBJECT_LIBRARIES
,
253 /* Get OS specific data. The ANNEX specifies the type (running
255 TARGET_OBJECT_OSDATA
,
256 /* Extra signal info. Usually the contents of `siginfo_t' on unix
258 TARGET_OBJECT_SIGNAL_INFO
,
259 /* The list of threads that are being debugged. */
260 TARGET_OBJECT_THREADS
,
261 /* Possible future objects: TARGET_OBJECT_FILE, ... */
264 /* Enumeration of the kinds of traceframe searches that a target may
265 be able to perform. */
276 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
277 OBJECT. The OFFSET, for a seekable object, specifies the
278 starting point. The ANNEX can be used to provide additional
279 data-specific information to the target.
281 Return the number of bytes actually transfered, or -1 if the
282 transfer is not supported or otherwise fails. Return of a positive
283 value less than LEN indicates that no further transfer is possible.
284 Unlike the raw to_xfer_partial interface, callers of these
285 functions do not need to retry partial transfers. */
287 extern LONGEST
target_read (struct target_ops
*ops
,
288 enum target_object object
,
289 const char *annex
, gdb_byte
*buf
,
290 ULONGEST offset
, LONGEST len
);
292 extern LONGEST
target_read_until_error (struct target_ops
*ops
,
293 enum target_object object
,
294 const char *annex
, gdb_byte
*buf
,
295 ULONGEST offset
, LONGEST len
);
297 extern LONGEST
target_write (struct target_ops
*ops
,
298 enum target_object object
,
299 const char *annex
, const gdb_byte
*buf
,
300 ULONGEST offset
, LONGEST len
);
302 /* Similar to target_write, except that it also calls PROGRESS with
303 the number of bytes written and the opaque BATON after every
304 successful partial write (and before the first write). This is
305 useful for progress reporting and user interaction while writing
306 data. To abort the transfer, the progress callback can throw an
309 LONGEST
target_write_with_progress (struct target_ops
*ops
,
310 enum target_object object
,
311 const char *annex
, const gdb_byte
*buf
,
312 ULONGEST offset
, LONGEST len
,
313 void (*progress
) (ULONGEST
, void *),
316 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
317 be read using OPS. The return value will be -1 if the transfer
318 fails or is not supported; 0 if the object is empty; or the length
319 of the object otherwise. If a positive value is returned, a
320 sufficiently large buffer will be allocated using xmalloc and
321 returned in *BUF_P containing the contents of the object.
323 This method should be used for objects sufficiently small to store
324 in a single xmalloc'd buffer, when no fixed bound on the object's
325 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
326 through this function. */
328 extern LONGEST
target_read_alloc (struct target_ops
*ops
,
329 enum target_object object
,
330 const char *annex
, gdb_byte
**buf_p
);
332 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
333 returned as a string, allocated using xmalloc. If an error occurs
334 or the transfer is unsupported, NULL is returned. Empty objects
335 are returned as allocated but empty strings. A warning is issued
336 if the result contains any embedded NUL bytes. */
338 extern char *target_read_stralloc (struct target_ops
*ops
,
339 enum target_object object
,
342 /* Wrappers to target read/write that perform memory transfers. They
343 throw an error if the memory transfer fails.
345 NOTE: cagney/2003-10-23: The naming schema is lifted from
346 "frame.h". The parameter order is lifted from get_frame_memory,
347 which in turn lifted it from read_memory. */
349 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
350 gdb_byte
*buf
, LONGEST len
);
351 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
352 CORE_ADDR addr
, int len
,
353 enum bfd_endian byte_order
);
355 struct thread_info
; /* fwd decl for parameter list below: */
359 struct target_ops
*beneath
; /* To the target under this one. */
360 char *to_shortname
; /* Name this target type */
361 char *to_longname
; /* Name for printing */
362 char *to_doc
; /* Documentation. Does not include trailing
363 newline, and starts with a one-line descrip-
364 tion (probably similar to to_longname). */
365 /* Per-target scratch pad. */
367 /* The open routine takes the rest of the parameters from the
368 command, and (if successful) pushes a new target onto the
369 stack. Targets should supply this routine, if only to provide
371 void (*to_open
) (char *, int);
372 /* Old targets with a static target vector provide "to_close".
373 New re-entrant targets provide "to_xclose" and that is expected
374 to xfree everything (including the "struct target_ops"). */
375 void (*to_xclose
) (struct target_ops
*targ
, int quitting
);
376 void (*to_close
) (int);
377 void (*to_attach
) (struct target_ops
*ops
, char *, int);
378 void (*to_post_attach
) (int);
379 void (*to_detach
) (struct target_ops
*ops
, char *, int);
380 void (*to_disconnect
) (struct target_ops
*, char *, int);
381 void (*to_resume
) (struct target_ops
*, ptid_t
, int, enum target_signal
);
382 ptid_t (*to_wait
) (struct target_ops
*,
383 ptid_t
, struct target_waitstatus
*, int);
384 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int);
385 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int);
386 void (*to_prepare_to_store
) (struct regcache
*);
388 /* Transfer LEN bytes of memory between GDB address MYADDR and
389 target address MEMADDR. If WRITE, transfer them to the target, else
390 transfer them from the target. TARGET is the target from which we
393 Return value, N, is one of the following:
395 0 means that we can't handle this. If errno has been set, it is the
396 error which prevented us from doing it (FIXME: What about bfd_error?).
398 positive (call it N) means that we have transferred N bytes
399 starting at MEMADDR. We might be able to handle more bytes
400 beyond this length, but no promises.
402 negative (call its absolute value N) means that we cannot
403 transfer right at MEMADDR, but we could transfer at least
404 something at MEMADDR + N.
406 NOTE: cagney/2004-10-01: This has been entirely superseeded by
407 to_xfer_partial and inferior inheritance. */
409 int (*deprecated_xfer_memory
) (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
411 struct mem_attrib
*attrib
,
412 struct target_ops
*target
);
414 void (*to_files_info
) (struct target_ops
*);
415 int (*to_insert_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
416 int (*to_remove_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
417 int (*to_can_use_hw_breakpoint
) (int, int, int);
418 int (*to_insert_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
419 int (*to_remove_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
420 int (*to_remove_watchpoint
) (CORE_ADDR
, int, int);
421 int (*to_insert_watchpoint
) (CORE_ADDR
, int, int);
422 int (*to_stopped_by_watchpoint
) (void);
423 int to_have_steppable_watchpoint
;
424 int to_have_continuable_watchpoint
;
425 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*);
426 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
427 CORE_ADDR
, CORE_ADDR
, int);
428 int (*to_region_ok_for_hw_watchpoint
) (CORE_ADDR
, int);
429 void (*to_terminal_init
) (void);
430 void (*to_terminal_inferior
) (void);
431 void (*to_terminal_ours_for_output
) (void);
432 void (*to_terminal_ours
) (void);
433 void (*to_terminal_save_ours
) (void);
434 void (*to_terminal_info
) (char *, int);
435 void (*to_kill
) (struct target_ops
*);
436 void (*to_load
) (char *, int);
437 int (*to_lookup_symbol
) (char *, CORE_ADDR
*);
438 void (*to_create_inferior
) (struct target_ops
*,
439 char *, char *, char **, int);
440 void (*to_post_startup_inferior
) (ptid_t
);
441 void (*to_acknowledge_created_inferior
) (int);
442 void (*to_insert_fork_catchpoint
) (int);
443 int (*to_remove_fork_catchpoint
) (int);
444 void (*to_insert_vfork_catchpoint
) (int);
445 int (*to_remove_vfork_catchpoint
) (int);
446 int (*to_follow_fork
) (struct target_ops
*, int);
447 void (*to_insert_exec_catchpoint
) (int);
448 int (*to_remove_exec_catchpoint
) (int);
449 int (*to_set_syscall_catchpoint
) (int, int, int, int, int *);
450 int (*to_has_exited
) (int, int, int *);
451 void (*to_mourn_inferior
) (struct target_ops
*);
452 int (*to_can_run
) (void);
453 void (*to_notice_signals
) (ptid_t ptid
);
454 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
);
455 void (*to_find_new_threads
) (struct target_ops
*);
456 char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
);
457 char *(*to_extra_thread_info
) (struct thread_info
*);
458 void (*to_stop
) (ptid_t
);
459 void (*to_rcmd
) (char *command
, struct ui_file
*output
);
460 char *(*to_pid_to_exec_file
) (int pid
);
461 void (*to_log_command
) (const char *);
462 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*);
463 enum strata to_stratum
;
464 int (*to_has_all_memory
) (struct target_ops
*);
465 int (*to_has_memory
) (struct target_ops
*);
466 int (*to_has_stack
) (struct target_ops
*);
467 int (*to_has_registers
) (struct target_ops
*);
468 int (*to_has_execution
) (struct target_ops
*);
469 int to_has_thread_control
; /* control thread execution */
470 int to_attach_no_wait
;
471 /* ASYNC target controls */
472 int (*to_can_async_p
) (void);
473 int (*to_is_async_p
) (void);
474 void (*to_async
) (void (*) (enum inferior_event_type
, void *), void *);
475 int (*to_async_mask
) (int);
476 int (*to_supports_non_stop
) (void);
477 /* find_memory_regions support method for gcore */
478 int (*to_find_memory_regions
) (int (*) (CORE_ADDR
,
483 /* make_corefile_notes support method for gcore */
484 char * (*to_make_corefile_notes
) (bfd
*, int *);
485 /* get_bookmark support method for bookmarks */
486 gdb_byte
* (*to_get_bookmark
) (char *, int);
487 /* goto_bookmark support method for bookmarks */
488 void (*to_goto_bookmark
) (gdb_byte
*, int);
489 /* Return the thread-local address at OFFSET in the
490 thread-local storage for the thread PTID and the shared library
491 or executable file given by OBJFILE. If that block of
492 thread-local storage hasn't been allocated yet, this function
493 may return an error. */
494 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
496 CORE_ADDR load_module_addr
,
499 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
500 OBJECT. The OFFSET, for a seekable object, specifies the
501 starting point. The ANNEX can be used to provide additional
502 data-specific information to the target.
504 Return the number of bytes actually transfered, zero when no
505 further transfer is possible, and -1 when the transfer is not
506 supported. Return of a positive value smaller than LEN does
507 not indicate the end of the object, only the end of the
508 transfer; higher level code should continue transferring if
509 desired. This is handled in target.c.
511 The interface does not support a "retry" mechanism. Instead it
512 assumes that at least one byte will be transfered on each
515 NOTE: cagney/2003-10-17: The current interface can lead to
516 fragmented transfers. Lower target levels should not implement
517 hacks, such as enlarging the transfer, in an attempt to
518 compensate for this. Instead, the target stack should be
519 extended so that it implements supply/collect methods and a
520 look-aside object cache. With that available, the lowest
521 target can safely and freely "push" data up the stack.
523 See target_read and target_write for more information. One,
524 and only one, of readbuf or writebuf must be non-NULL. */
526 LONGEST (*to_xfer_partial
) (struct target_ops
*ops
,
527 enum target_object object
, const char *annex
,
528 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
529 ULONGEST offset
, LONGEST len
);
531 /* Returns the memory map for the target. A return value of NULL
532 means that no memory map is available. If a memory address
533 does not fall within any returned regions, it's assumed to be
534 RAM. The returned memory regions should not overlap.
536 The order of regions does not matter; target_memory_map will
537 sort regions by starting address. For that reason, this
538 function should not be called directly except via
541 This method should not cache data; if the memory map could
542 change unexpectedly, it should be invalidated, and higher
543 layers will re-fetch it. */
544 VEC(mem_region_s
) *(*to_memory_map
) (struct target_ops
*);
546 /* Erases the region of flash memory starting at ADDRESS, of
549 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
550 on flash block boundaries, as reported by 'to_memory_map'. */
551 void (*to_flash_erase
) (struct target_ops
*,
552 ULONGEST address
, LONGEST length
);
554 /* Finishes a flash memory write sequence. After this operation
555 all flash memory should be available for writing and the result
556 of reading from areas written by 'to_flash_write' should be
557 equal to what was written. */
558 void (*to_flash_done
) (struct target_ops
*);
560 /* Describe the architecture-specific features of this target.
561 Returns the description found, or NULL if no description
563 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
);
565 /* Build the PTID of the thread on which a given task is running,
566 based on LWP and THREAD. These values are extracted from the
567 task Private_Data section of the Ada Task Control Block, and
568 their interpretation depends on the target. */
569 ptid_t (*to_get_ada_task_ptid
) (long lwp
, long thread
);
571 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
572 Return 0 if *READPTR is already at the end of the buffer.
573 Return -1 if there is insufficient buffer for a whole entry.
574 Return 1 if an entry was read into *TYPEP and *VALP. */
575 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
576 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
);
578 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
579 sequence of bytes in PATTERN with length PATTERN_LEN.
581 The result is 1 if found, 0 if not found, and -1 if there was an error
582 requiring halting of the search (e.g. memory read error).
583 If the pattern is found the address is recorded in FOUND_ADDRP. */
584 int (*to_search_memory
) (struct target_ops
*ops
,
585 CORE_ADDR start_addr
, ULONGEST search_space_len
,
586 const gdb_byte
*pattern
, ULONGEST pattern_len
,
587 CORE_ADDR
*found_addrp
);
589 /* Can target execute in reverse? */
590 int (*to_can_execute_reverse
) (void);
592 /* Does this target support debugging multiple processes
594 int (*to_supports_multi_process
) (void);
596 /* Determine current architecture of thread PTID.
598 The target is supposed to determine the architecture of the code where
599 the target is currently stopped at (on Cell, if a target is in spu_run,
600 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
601 This is architecture used to perform decr_pc_after_break adjustment,
602 and also determines the frame architecture of the innermost frame.
603 ptrace operations need to operate according to target_gdbarch.
605 The default implementation always returns target_gdbarch. */
606 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
);
608 /* Determine current address space of thread PTID.
610 The default implementation always returns the inferior's
612 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
615 /* Tracepoint-related operations. */
617 /* Prepare the target for a tracing run. */
618 void (*to_trace_init
) (void);
620 /* Send full details of a tracepoint to the target. */
621 void (*to_download_tracepoint
) (struct breakpoint
*t
);
623 /* Send full details of a trace state variable to the target. */
624 void (*to_download_trace_state_variable
) (struct trace_state_variable
*tsv
);
626 /* Inform the target info of memory regions that are readonly
627 (such as text sections), and so it should return data from
628 those rather than look in the trace buffer. */
629 void (*to_trace_set_readonly_regions
) (void);
631 /* Start a trace run. */
632 void (*to_trace_start
) (void);
634 /* Get the current status of a tracing run. */
635 int (*to_get_trace_status
) (int *stop_reason
);
637 /* Stop a trace run. */
638 void (*to_trace_stop
) (void);
640 /* Ask the target to find a trace frame of the given type TYPE,
641 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
642 number of the trace frame, and also the tracepoint number at
644 int (*to_trace_find
) (enum trace_find_type type
, int num
,
645 ULONGEST addr1
, ULONGEST addr2
, int *tpp
);
647 /* Get the value of the trace state variable number TSV, returning
648 1 if the value is known and writing the value itself into the
649 location pointed to by VAL, else returning 0. */
650 int (*to_get_trace_state_variable_value
) (int tsv
, LONGEST
*val
);
652 /* Set the target's tracing behavior in response to unexpected
653 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
654 void (*to_set_disconnected_tracing
) (int val
);
656 /* Return the processor core that thread PTID was last seen on.
657 This information is updated only when:
658 - update_thread_list is called
660 If the core cannot be determined -- either for the specified thread, or
661 right now, or in this debug session, or for this target -- return -1. */
662 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
);
665 /* Need sub-structure for target machine related rather than comm related?
669 /* Magic number for checking ops size. If a struct doesn't end with this
670 number, somebody changed the declaration but didn't change all the
671 places that initialize one. */
673 #define OPS_MAGIC 3840
675 /* The ops structure for our "current" target process. This should
676 never be NULL. If there is no target, it points to the dummy_target. */
678 extern struct target_ops current_target
;
680 /* Define easy words for doing these operations on our current target. */
682 #define target_shortname (current_target.to_shortname)
683 #define target_longname (current_target.to_longname)
685 /* Does whatever cleanup is required for a target that we are no
686 longer going to be calling. QUITTING indicates that GDB is exiting
687 and should not get hung on an error (otherwise it is important to
688 perform clean termination, even if it takes a while). This routine
689 is automatically always called when popping the target off the
690 target stack (to_beneath is undefined). Closing file descriptors
691 and freeing all memory allocated memory are typical things it
694 void target_close (struct target_ops
*targ
, int quitting
);
696 /* Attaches to a process on the target side. Arguments are as passed
697 to the `attach' command by the user. This routine can be called
698 when the target is not on the target-stack, if the target_can_run
699 routine returns 1; in that case, it must push itself onto the stack.
700 Upon exit, the target should be ready for normal operations, and
701 should be ready to deliver the status of the process immediately
702 (without waiting) to an upcoming target_wait call. */
704 void target_attach (char *, int);
706 /* Some targets don't generate traps when attaching to the inferior,
707 or their target_attach implementation takes care of the waiting.
708 These targets must set to_attach_no_wait. */
710 #define target_attach_no_wait \
711 (current_target.to_attach_no_wait)
713 /* The target_attach operation places a process under debugger control,
714 and stops the process.
716 This operation provides a target-specific hook that allows the
717 necessary bookkeeping to be performed after an attach completes. */
718 #define target_post_attach(pid) \
719 (*current_target.to_post_attach) (pid)
721 /* Takes a program previously attached to and detaches it.
722 The program may resume execution (some targets do, some don't) and will
723 no longer stop on signals, etc. We better not have left any breakpoints
724 in the program or it'll die when it hits one. ARGS is arguments
725 typed by the user (e.g. a signal to send the process). FROM_TTY
726 says whether to be verbose or not. */
728 extern void target_detach (char *, int);
730 /* Disconnect from the current target without resuming it (leaving it
731 waiting for a debugger). */
733 extern void target_disconnect (char *, int);
735 /* Resume execution of the target process PTID. STEP says whether to
736 single-step or to run free; SIGGNAL is the signal to be given to
737 the target, or TARGET_SIGNAL_0 for no signal. The caller may not
738 pass TARGET_SIGNAL_DEFAULT. */
740 extern void target_resume (ptid_t ptid
, int step
, enum target_signal signal
);
742 /* Wait for process pid to do something. PTID = -1 to wait for any
743 pid to do something. Return pid of child, or -1 in case of error;
744 store status through argument pointer STATUS. Note that it is
745 _NOT_ OK to throw_exception() out of target_wait() without popping
746 the debugging target from the stack; GDB isn't prepared to get back
747 to the prompt with a debugging target but without the frame cache,
748 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
751 extern ptid_t
target_wait (ptid_t ptid
, struct target_waitstatus
*status
,
754 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
756 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
758 /* Store at least register REGNO, or all regs if REGNO == -1.
759 It can store as many registers as it wants to, so target_prepare_to_store
760 must have been previously called. Calls error() if there are problems. */
762 extern void target_store_registers (struct regcache
*regcache
, int regs
);
764 /* Get ready to modify the registers array. On machines which store
765 individual registers, this doesn't need to do anything. On machines
766 which store all the registers in one fell swoop, this makes sure
767 that REGISTERS contains all the registers from the program being
770 #define target_prepare_to_store(regcache) \
771 (*current_target.to_prepare_to_store) (regcache)
773 /* Determine current address space of thread PTID. */
775 struct address_space
*target_thread_address_space (ptid_t
);
777 /* Returns true if this target can debug multiple processes
780 #define target_supports_multi_process() \
781 (*current_target.to_supports_multi_process) ()
783 /* Invalidate all target dcaches. */
784 extern void target_dcache_invalidate (void);
786 extern int target_read_string (CORE_ADDR
, char **, int, int *);
788 extern int target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
);
790 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
);
792 extern int target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
795 /* Fetches the target's memory map. If one is found it is sorted
796 and returned, after some consistency checking. Otherwise, NULL
798 VEC(mem_region_s
) *target_memory_map (void);
800 /* Erase the specified flash region. */
801 void target_flash_erase (ULONGEST address
, LONGEST length
);
803 /* Finish a sequence of flash operations. */
804 void target_flash_done (void);
806 /* Describes a request for a memory write operation. */
807 struct memory_write_request
809 /* Begining address that must be written. */
811 /* Past-the-end address. */
813 /* The data to write. */
815 /* A callback baton for progress reporting for this request. */
818 typedef struct memory_write_request memory_write_request_s
;
819 DEF_VEC_O(memory_write_request_s
);
821 /* Enumeration specifying different flash preservation behaviour. */
822 enum flash_preserve_mode
828 /* Write several memory blocks at once. This version can be more
829 efficient than making several calls to target_write_memory, in
830 particular because it can optimize accesses to flash memory.
832 Moreover, this is currently the only memory access function in gdb
833 that supports writing to flash memory, and it should be used for
834 all cases where access to flash memory is desirable.
836 REQUESTS is the vector (see vec.h) of memory_write_request.
837 PRESERVE_FLASH_P indicates what to do with blocks which must be
838 erased, but not completely rewritten.
839 PROGRESS_CB is a function that will be periodically called to provide
840 feedback to user. It will be called with the baton corresponding
841 to the request currently being written. It may also be called
842 with a NULL baton, when preserved flash sectors are being rewritten.
844 The function returns 0 on success, and error otherwise. */
845 int target_write_memory_blocks (VEC(memory_write_request_s
) *requests
,
846 enum flash_preserve_mode preserve_flash_p
,
847 void (*progress_cb
) (ULONGEST
, void *));
851 extern int inferior_has_forked (ptid_t pid
, ptid_t
*child_pid
);
853 extern int inferior_has_vforked (ptid_t pid
, ptid_t
*child_pid
);
855 extern int inferior_has_execd (ptid_t pid
, char **execd_pathname
);
857 extern int inferior_has_called_syscall (ptid_t pid
, int *syscall_number
);
859 /* Print a line about the current target. */
861 #define target_files_info() \
862 (*current_target.to_files_info) (¤t_target)
864 /* Insert a breakpoint at address BP_TGT->placed_address in the target
865 machine. Result is 0 for success, or an errno value. */
867 #define target_insert_breakpoint(gdbarch, bp_tgt) \
868 (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt)
870 /* Remove a breakpoint at address BP_TGT->placed_address in the target
871 machine. Result is 0 for success, or an errno value. */
873 #define target_remove_breakpoint(gdbarch, bp_tgt) \
874 (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt)
876 /* Initialize the terminal settings we record for the inferior,
877 before we actually run the inferior. */
879 #define target_terminal_init() \
880 (*current_target.to_terminal_init) ()
882 /* Put the inferior's terminal settings into effect.
883 This is preparation for starting or resuming the inferior. */
885 extern void target_terminal_inferior (void);
887 /* Put some of our terminal settings into effect,
888 enough to get proper results from our output,
889 but do not change into or out of RAW mode
890 so that no input is discarded.
892 After doing this, either terminal_ours or terminal_inferior
893 should be called to get back to a normal state of affairs. */
895 #define target_terminal_ours_for_output() \
896 (*current_target.to_terminal_ours_for_output) ()
898 /* Put our terminal settings into effect.
899 First record the inferior's terminal settings
900 so they can be restored properly later. */
902 #define target_terminal_ours() \
903 (*current_target.to_terminal_ours) ()
905 /* Save our terminal settings.
906 This is called from TUI after entering or leaving the curses
907 mode. Since curses modifies our terminal this call is here
908 to take this change into account. */
910 #define target_terminal_save_ours() \
911 (*current_target.to_terminal_save_ours) ()
913 /* Print useful information about our terminal status, if such a thing
916 #define target_terminal_info(arg, from_tty) \
917 (*current_target.to_terminal_info) (arg, from_tty)
919 /* Kill the inferior process. Make it go away. */
921 extern void target_kill (void);
923 /* Load an executable file into the target process. This is expected
924 to not only bring new code into the target process, but also to
925 update GDB's symbol tables to match.
927 ARG contains command-line arguments, to be broken down with
928 buildargv (). The first non-switch argument is the filename to
929 load, FILE; the second is a number (as parsed by strtoul (..., ...,
930 0)), which is an offset to apply to the load addresses of FILE's
931 sections. The target may define switches, or other non-switch
932 arguments, as it pleases. */
934 extern void target_load (char *arg
, int from_tty
);
936 /* Look up a symbol in the target's symbol table. NAME is the symbol
937 name. ADDRP is a CORE_ADDR * pointing to where the value of the
938 symbol should be returned. The result is 0 if successful, nonzero
939 if the symbol does not exist in the target environment. This
940 function should not call error() if communication with the target
941 is interrupted, since it is called from symbol reading, but should
942 return nonzero, possibly doing a complain(). */
944 #define target_lookup_symbol(name, addrp) \
945 (*current_target.to_lookup_symbol) (name, addrp)
947 /* Start an inferior process and set inferior_ptid to its pid.
948 EXEC_FILE is the file to run.
949 ALLARGS is a string containing the arguments to the program.
950 ENV is the environment vector to pass. Errors reported with error().
951 On VxWorks and various standalone systems, we ignore exec_file. */
953 void target_create_inferior (char *exec_file
, char *args
,
954 char **env
, int from_tty
);
956 /* Some targets (such as ttrace-based HPUX) don't allow us to request
957 notification of inferior events such as fork and vork immediately
958 after the inferior is created. (This because of how gdb gets an
959 inferior created via invoking a shell to do it. In such a scenario,
960 if the shell init file has commands in it, the shell will fork and
961 exec for each of those commands, and we will see each such fork
964 Such targets will supply an appropriate definition for this function. */
966 #define target_post_startup_inferior(ptid) \
967 (*current_target.to_post_startup_inferior) (ptid)
969 /* On some targets, the sequence of starting up an inferior requires
970 some synchronization between gdb and the new inferior process, PID. */
972 #define target_acknowledge_created_inferior(pid) \
973 (*current_target.to_acknowledge_created_inferior) (pid)
975 /* On some targets, we can catch an inferior fork or vfork event when
976 it occurs. These functions insert/remove an already-created
977 catchpoint for such events. */
979 #define target_insert_fork_catchpoint(pid) \
980 (*current_target.to_insert_fork_catchpoint) (pid)
982 #define target_remove_fork_catchpoint(pid) \
983 (*current_target.to_remove_fork_catchpoint) (pid)
985 #define target_insert_vfork_catchpoint(pid) \
986 (*current_target.to_insert_vfork_catchpoint) (pid)
988 #define target_remove_vfork_catchpoint(pid) \
989 (*current_target.to_remove_vfork_catchpoint) (pid)
991 /* If the inferior forks or vforks, this function will be called at
992 the next resume in order to perform any bookkeeping and fiddling
993 necessary to continue debugging either the parent or child, as
994 requested, and releasing the other. Information about the fork
995 or vfork event is available via get_last_target_status ().
996 This function returns 1 if the inferior should not be resumed
997 (i.e. there is another event pending). */
999 int target_follow_fork (int follow_child
);
1001 /* On some targets, we can catch an inferior exec event when it
1002 occurs. These functions insert/remove an already-created
1003 catchpoint for such events. */
1005 #define target_insert_exec_catchpoint(pid) \
1006 (*current_target.to_insert_exec_catchpoint) (pid)
1008 #define target_remove_exec_catchpoint(pid) \
1009 (*current_target.to_remove_exec_catchpoint) (pid)
1013 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1014 If NEEDED is zero, it means the target can disable the mechanism to
1015 catch system calls because there are no more catchpoints of this type.
1017 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1018 being requested. In this case, both TABLE_SIZE and TABLE should
1021 TABLE_SIZE is the number of elements in TABLE. It only matters if
1024 TABLE is an array of ints, indexed by syscall number. An element in
1025 this array is nonzero if that syscall should be caught. This argument
1026 only matters if ANY_COUNT is zero. */
1028 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1029 (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \
1032 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1033 exit code of PID, if any. */
1035 #define target_has_exited(pid,wait_status,exit_status) \
1036 (*current_target.to_has_exited) (pid,wait_status,exit_status)
1038 /* The debugger has completed a blocking wait() call. There is now
1039 some process event that must be processed. This function should
1040 be defined by those targets that require the debugger to perform
1041 cleanup or internal state changes in response to the process event. */
1043 /* The inferior process has died. Do what is right. */
1045 void target_mourn_inferior (void);
1047 /* Does target have enough data to do a run or attach command? */
1049 #define target_can_run(t) \
1050 ((t)->to_can_run) ()
1052 /* post process changes to signal handling in the inferior. */
1054 #define target_notice_signals(ptid) \
1055 (*current_target.to_notice_signals) (ptid)
1057 /* Check to see if a thread is still alive. */
1059 extern int target_thread_alive (ptid_t ptid
);
1061 /* Query for new threads and add them to the thread list. */
1063 extern void target_find_new_threads (void);
1065 /* Make target stop in a continuable fashion. (For instance, under
1066 Unix, this should act like SIGSTOP). This function is normally
1067 used by GUIs to implement a stop button. */
1069 #define target_stop(ptid) (*current_target.to_stop) (ptid)
1071 /* Send the specified COMMAND to the target's monitor
1072 (shell,interpreter) for execution. The result of the query is
1073 placed in OUTBUF. */
1075 #define target_rcmd(command, outbuf) \
1076 (*current_target.to_rcmd) (command, outbuf)
1079 /* Does the target include all of memory, or only part of it? This
1080 determines whether we look up the target chain for other parts of
1081 memory if this target can't satisfy a request. */
1083 extern int target_has_all_memory_1 (void);
1084 #define target_has_all_memory target_has_all_memory_1 ()
1086 /* Does the target include memory? (Dummy targets don't.) */
1088 extern int target_has_memory_1 (void);
1089 #define target_has_memory target_has_memory_1 ()
1091 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1092 we start a process.) */
1094 extern int target_has_stack_1 (void);
1095 #define target_has_stack target_has_stack_1 ()
1097 /* Does the target have registers? (Exec files don't.) */
1099 extern int target_has_registers_1 (void);
1100 #define target_has_registers target_has_registers_1 ()
1102 /* Does the target have execution? Can we make it jump (through
1103 hoops), or pop its stack a few times? This means that the current
1104 target is currently executing; for some targets, that's the same as
1105 whether or not the target is capable of execution, but there are
1106 also targets which can be current while not executing. In that
1107 case this will become true after target_create_inferior or
1110 extern int target_has_execution_1 (void);
1111 #define target_has_execution target_has_execution_1 ()
1113 /* Default implementations for process_stratum targets. Return true
1114 if there's a selected inferior, false otherwise. */
1116 extern int default_child_has_all_memory (struct target_ops
*ops
);
1117 extern int default_child_has_memory (struct target_ops
*ops
);
1118 extern int default_child_has_stack (struct target_ops
*ops
);
1119 extern int default_child_has_registers (struct target_ops
*ops
);
1120 extern int default_child_has_execution (struct target_ops
*ops
);
1122 /* Can the target support the debugger control of thread execution?
1123 Can it lock the thread scheduler? */
1125 #define target_can_lock_scheduler \
1126 (current_target.to_has_thread_control & tc_schedlock)
1128 /* Should the target enable async mode if it is supported? Temporary
1129 cludge until async mode is a strict superset of sync mode. */
1130 extern int target_async_permitted
;
1132 /* Can the target support asynchronous execution? */
1133 #define target_can_async_p() (current_target.to_can_async_p ())
1135 /* Is the target in asynchronous execution mode? */
1136 #define target_is_async_p() (current_target.to_is_async_p ())
1138 int target_supports_non_stop (void);
1140 /* Put the target in async mode with the specified callback function. */
1141 #define target_async(CALLBACK,CONTEXT) \
1142 (current_target.to_async ((CALLBACK), (CONTEXT)))
1144 /* This is to be used ONLY within call_function_by_hand(). It provides
1145 a workaround, to have inferior function calls done in sychronous
1146 mode, even though the target is asynchronous. After
1147 target_async_mask(0) is called, calls to target_can_async_p() will
1148 return FALSE , so that target_resume() will not try to start the
1149 target asynchronously. After the inferior stops, we IMMEDIATELY
1150 restore the previous nature of the target, by calling
1151 target_async_mask(1). After that, target_can_async_p() will return
1152 TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED.
1154 FIXME ezannoni 1999-12-13: we won't need this once we move
1155 the turning async on and off to the single execution commands,
1156 from where it is done currently, in remote_resume(). */
1158 #define target_async_mask(MASK) \
1159 (current_target.to_async_mask (MASK))
1161 /* Converts a process id to a string. Usually, the string just contains
1162 `process xyz', but on some systems it may contain
1163 `process xyz thread abc'. */
1165 extern char *target_pid_to_str (ptid_t ptid
);
1167 extern char *normal_pid_to_str (ptid_t ptid
);
1169 /* Return a short string describing extra information about PID,
1170 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1173 #define target_extra_thread_info(TP) \
1174 (current_target.to_extra_thread_info (TP))
1176 /* Attempts to find the pathname of the executable file
1177 that was run to create a specified process.
1179 The process PID must be stopped when this operation is used.
1181 If the executable file cannot be determined, NULL is returned.
1183 Else, a pointer to a character string containing the pathname
1184 is returned. This string should be copied into a buffer by
1185 the client if the string will not be immediately used, or if
1188 #define target_pid_to_exec_file(pid) \
1189 (current_target.to_pid_to_exec_file) (pid)
1191 /* See the to_thread_architecture description in struct target_ops. */
1193 #define target_thread_architecture(ptid) \
1194 (current_target.to_thread_architecture (¤t_target, ptid))
1197 * Iterator function for target memory regions.
1198 * Calls a callback function once for each memory region 'mapped'
1199 * in the child process. Defined as a simple macro rather than
1200 * as a function macro so that it can be tested for nullity.
1203 #define target_find_memory_regions(FUNC, DATA) \
1204 (current_target.to_find_memory_regions) (FUNC, DATA)
1207 * Compose corefile .note section.
1210 #define target_make_corefile_notes(BFD, SIZE_P) \
1211 (current_target.to_make_corefile_notes) (BFD, SIZE_P)
1213 /* Bookmark interfaces. */
1214 #define target_get_bookmark(ARGS, FROM_TTY) \
1215 (current_target.to_get_bookmark) (ARGS, FROM_TTY)
1217 #define target_goto_bookmark(ARG, FROM_TTY) \
1218 (current_target.to_goto_bookmark) (ARG, FROM_TTY)
1220 /* Hardware watchpoint interfaces. */
1222 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1223 write). Only the INFERIOR_PTID task is being queried. */
1225 #define target_stopped_by_watchpoint \
1226 (*current_target.to_stopped_by_watchpoint)
1228 /* Non-zero if we have steppable watchpoints */
1230 #define target_have_steppable_watchpoint \
1231 (current_target.to_have_steppable_watchpoint)
1233 /* Non-zero if we have continuable watchpoints */
1235 #define target_have_continuable_watchpoint \
1236 (current_target.to_have_continuable_watchpoint)
1238 /* Provide defaults for hardware watchpoint functions. */
1240 /* If the *_hw_beakpoint functions have not been defined
1241 elsewhere use the definitions in the target vector. */
1243 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
1244 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
1245 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
1246 (including this one?). OTHERTYPE is who knows what... */
1248 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1249 (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE);
1251 #define target_region_ok_for_hw_watchpoint(addr, len) \
1252 (*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
1255 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0
1256 for write, 1 for read, and 2 for read/write accesses. Returns 0 for
1257 success, non-zero for failure. */
1259 #define target_insert_watchpoint(addr, len, type) \
1260 (*current_target.to_insert_watchpoint) (addr, len, type)
1262 #define target_remove_watchpoint(addr, len, type) \
1263 (*current_target.to_remove_watchpoint) (addr, len, type)
1265 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1266 (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt)
1268 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1269 (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt)
1271 /* Return non-zero if target knows the data address which triggered this
1272 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1273 INFERIOR_PTID task is being queried. */
1274 #define target_stopped_data_address(target, addr_p) \
1275 (*target.to_stopped_data_address) (target, addr_p)
1277 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1278 (*target.to_watchpoint_addr_within_range) (target, addr, start, length)
1280 /* Target can execute in reverse? */
1281 #define target_can_execute_reverse \
1282 (current_target.to_can_execute_reverse ? \
1283 current_target.to_can_execute_reverse () : 0)
1285 extern const struct target_desc
*target_read_description (struct target_ops
*);
1287 #define target_get_ada_task_ptid(lwp, tid) \
1288 (*current_target.to_get_ada_task_ptid) (lwp,tid)
1290 /* Utility implementation of searching memory. */
1291 extern int simple_search_memory (struct target_ops
* ops
,
1292 CORE_ADDR start_addr
,
1293 ULONGEST search_space_len
,
1294 const gdb_byte
*pattern
,
1295 ULONGEST pattern_len
,
1296 CORE_ADDR
*found_addrp
);
1298 /* Main entry point for searching memory. */
1299 extern int target_search_memory (CORE_ADDR start_addr
,
1300 ULONGEST search_space_len
,
1301 const gdb_byte
*pattern
,
1302 ULONGEST pattern_len
,
1303 CORE_ADDR
*found_addrp
);
1305 /* Tracepoint-related operations. */
1307 #define target_trace_init() \
1308 (*current_target.to_trace_init) ()
1310 #define target_download_tracepoint(t) \
1311 (*current_target.to_download_tracepoint) (t)
1313 #define target_download_trace_state_variable(tsv) \
1314 (*current_target.to_download_trace_state_variable) (tsv)
1316 #define target_trace_start() \
1317 (*current_target.to_trace_start) ()
1319 #define target_trace_set_readonly_regions() \
1320 (*current_target.to_trace_set_readonly_regions) ()
1322 #define target_get_trace_status(stop_reason) \
1323 (*current_target.to_get_trace_status) (stop_reason)
1325 #define target_trace_stop() \
1326 (*current_target.to_trace_stop) ()
1328 #define target_trace_find(type,num,addr1,addr2,tpp) \
1329 (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp))
1331 #define target_get_trace_state_variable_value(tsv,val) \
1332 (*current_target.to_get_trace_state_variable_value) ((tsv), (val))
1334 #define target_set_disconnected_tracing(val) \
1335 (*current_target.to_set_disconnected_tracing) (val)
1337 /* Command logging facility. */
1339 #define target_log_command(p) \
1341 if (current_target.to_log_command) \
1342 (*current_target.to_log_command) (p); \
1346 extern int target_core_of_thread (ptid_t ptid
);
1348 /* Routines for maintenance of the target structures...
1350 add_target: Add a target to the list of all possible targets.
1352 push_target: Make this target the top of the stack of currently used
1353 targets, within its particular stratum of the stack. Result
1354 is 0 if now atop the stack, nonzero if not on top (maybe
1357 unpush_target: Remove this from the stack of currently used targets,
1358 no matter where it is on the list. Returns 0 if no
1359 change, 1 if removed from stack.
1361 pop_target: Remove the top thing on the stack of current targets. */
1363 extern void add_target (struct target_ops
*);
1365 extern int push_target (struct target_ops
*);
1367 extern int unpush_target (struct target_ops
*);
1369 extern void target_pre_inferior (int);
1371 extern void target_preopen (int);
1373 extern void pop_target (void);
1375 /* Does whatever cleanup is required to get rid of all pushed targets.
1376 QUITTING is propagated to target_close; it indicates that GDB is
1377 exiting and should not get hung on an error (otherwise it is
1378 important to perform clean termination, even if it takes a
1380 extern void pop_all_targets (int quitting
);
1382 /* Like pop_all_targets, but pops only targets whose stratum is
1383 strictly above ABOVE_STRATUM. */
1384 extern void pop_all_targets_above (enum strata above_stratum
, int quitting
);
1386 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
1389 /* Struct target_section maps address ranges to file sections. It is
1390 mostly used with BFD files, but can be used without (e.g. for handling
1391 raw disks, or files not in formats handled by BFD). */
1393 struct target_section
1395 CORE_ADDR addr
; /* Lowest address in section */
1396 CORE_ADDR endaddr
; /* 1+highest address in section */
1398 struct bfd_section
*the_bfd_section
;
1400 bfd
*bfd
; /* BFD file pointer */
1403 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
1405 struct target_section_table
1407 struct target_section
*sections
;
1408 struct target_section
*sections_end
;
1411 /* Return the "section" containing the specified address. */
1412 struct target_section
*target_section_by_addr (struct target_ops
*target
,
1415 /* Return the target section table this target (or the targets
1416 beneath) currently manipulate. */
1418 extern struct target_section_table
*target_get_section_table
1419 (struct target_ops
*target
);
1421 /* From mem-break.c */
1423 extern int memory_remove_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1425 extern int memory_insert_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1427 extern int default_memory_remove_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1429 extern int default_memory_insert_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1434 extern void initialize_targets (void);
1436 extern NORETURN
void noprocess (void) ATTR_NORETURN
;
1438 extern void target_require_runnable (void);
1440 extern void find_default_attach (struct target_ops
*, char *, int);
1442 extern void find_default_create_inferior (struct target_ops
*,
1443 char *, char *, char **, int);
1445 extern struct target_ops
*find_run_target (void);
1447 extern struct target_ops
*find_core_target (void);
1449 extern struct target_ops
*find_target_beneath (struct target_ops
*);
1451 /* Read OS data object of type TYPE from the target, and return it in
1452 XML format. The result is NUL-terminated and returned as a string,
1453 allocated using xmalloc. If an error occurs or the transfer is
1454 unsupported, NULL is returned. Empty objects are returned as
1455 allocated but empty strings. */
1457 extern char *target_get_osdata (const char *type
);
1460 /* Stuff that should be shared among the various remote targets. */
1462 /* Debugging level. 0 is off, and non-zero values mean to print some debug
1463 information (higher values, more information). */
1464 extern int remote_debug
;
1466 /* Speed in bits per second, or -1 which means don't mess with the speed. */
1467 extern int baud_rate
;
1468 /* Timeout limit for response from target. */
1469 extern int remote_timeout
;
1472 /* Functions for helping to write a native target. */
1474 /* This is for native targets which use a unix/POSIX-style waitstatus. */
1475 extern void store_waitstatus (struct target_waitstatus
*, int);
1477 /* These are in common/signals.c, but they're only used by gdb. */
1478 extern enum target_signal
default_target_signal_from_host (struct gdbarch
*,
1480 extern int default_target_signal_to_host (struct gdbarch
*,
1481 enum target_signal
);
1483 /* Convert from a number used in a GDB command to an enum target_signal. */
1484 extern enum target_signal
target_signal_from_command (int);
1485 /* End of files in common/signals.c. */
1487 /* Set the show memory breakpoints mode to show, and installs a cleanup
1488 to restore it back to the current value. */
1489 extern struct cleanup
*make_show_memory_breakpoints_cleanup (int show
);
1492 /* Imported from machine dependent code */
1494 /* Blank target vector entries are initialized to target_ignore. */
1495 void target_ignore (void);
1497 extern struct target_ops deprecated_child_ops
;
1499 #endif /* !defined (TARGET_H) */