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
;
38 struct static_tracepoint_marker
;
42 /* This include file defines the interface between the main part
43 of the debugger, and the part which is target-specific, or
44 specific to the communications interface between us and the
47 A TARGET is an interface between the debugger and a particular
48 kind of file or process. Targets can be STACKED in STRATA,
49 so that more than one target can potentially respond to a request.
50 In particular, memory accesses will walk down the stack of targets
51 until they find a target that is interested in handling that particular
52 address. STRATA are artificial boundaries on the stack, within
53 which particular kinds of targets live. Strata exist so that
54 people don't get confused by pushing e.g. a process target and then
55 a file target, and wondering why they can't see the current values
56 of variables any more (the file target is handling them and they
57 never get to the process target). So when you push a file target,
58 it goes into the file stratum, which is always below the process
65 #include "gdb_signals.h"
69 dummy_stratum
, /* The lowest of the low */
70 file_stratum
, /* Executable files, etc */
71 process_stratum
, /* Executing processes or core dump files */
72 thread_stratum
, /* Executing threads */
73 record_stratum
, /* Support record debugging */
74 arch_stratum
/* Architecture overrides */
77 enum thread_control_capabilities
79 tc_none
= 0, /* Default: can't control thread execution. */
80 tc_schedlock
= 1, /* Can lock the thread scheduler. */
83 /* Stuff for target_wait. */
85 /* Generally, what has the program done? */
88 /* The program has exited. The exit status is in value.integer. */
89 TARGET_WAITKIND_EXITED
,
91 /* The program has stopped with a signal. Which signal is in
93 TARGET_WAITKIND_STOPPED
,
95 /* The program has terminated with a signal. Which signal is in
97 TARGET_WAITKIND_SIGNALLED
,
99 /* The program is letting us know that it dynamically loaded something
100 (e.g. it called load(2) on AIX). */
101 TARGET_WAITKIND_LOADED
,
103 /* The program has forked. A "related" process' PTID is in
104 value.related_pid. I.e., if the child forks, value.related_pid
105 is the parent's ID. */
107 TARGET_WAITKIND_FORKED
,
109 /* The program has vforked. A "related" process's PTID is in
110 value.related_pid. */
112 TARGET_WAITKIND_VFORKED
,
114 /* The program has exec'ed a new executable file. The new file's
115 pathname is pointed to by value.execd_pathname. */
117 TARGET_WAITKIND_EXECD
,
119 /* The program had previously vforked, and now the child is done
120 with the shared memory region, because it exec'ed or exited.
121 Note that the event is reported to the vfork parent. This is
122 only used if GDB did not stay attached to the vfork child,
123 otherwise, a TARGET_WAITKIND_EXECD or
124 TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
125 has the same effect. */
126 TARGET_WAITKIND_VFORK_DONE
,
128 /* The program has entered or returned from a system call. On
129 HP-UX, this is used in the hardware watchpoint implementation.
130 The syscall's unique integer ID number is in value.syscall_id */
132 TARGET_WAITKIND_SYSCALL_ENTRY
,
133 TARGET_WAITKIND_SYSCALL_RETURN
,
135 /* Nothing happened, but we stopped anyway. This perhaps should be handled
136 within target_wait, but I'm not sure target_wait should be resuming the
138 TARGET_WAITKIND_SPURIOUS
,
140 /* An event has occured, but we should wait again.
141 Remote_async_wait() returns this when there is an event
142 on the inferior, but the rest of the world is not interested in
143 it. The inferior has not stopped, but has just sent some output
144 to the console, for instance. In this case, we want to go back
145 to the event loop and wait there for another event from the
146 inferior, rather than being stuck in the remote_async_wait()
147 function. This way the event loop is responsive to other events,
148 like for instance the user typing. */
149 TARGET_WAITKIND_IGNORE
,
151 /* The target has run out of history information,
152 and cannot run backward any further. */
153 TARGET_WAITKIND_NO_HISTORY
156 struct target_waitstatus
158 enum target_waitkind kind
;
160 /* Forked child pid, execd pathname, exit status, signal number or
165 enum target_signal sig
;
167 char *execd_pathname
;
173 /* Options that can be passed to target_wait. */
175 /* Return immediately if there's no event already queued. If this
176 options is not requested, target_wait blocks waiting for an
178 #define TARGET_WNOHANG 1
180 /* The structure below stores information about a system call.
181 It is basically used in the "catch syscall" command, and in
182 every function that gives information about a system call.
184 It's also good to mention that its fields represent everything
185 that we currently know about a syscall in GDB. */
188 /* The syscall number. */
191 /* The syscall name. */
195 /* Return a pretty printed form of target_waitstatus.
196 Space for the result is malloc'd, caller must free. */
197 extern char *target_waitstatus_to_string (const struct target_waitstatus
*);
199 /* Possible types of events that the inferior handler will have to
201 enum inferior_event_type
203 /* There is a request to quit the inferior, abandon it. */
205 /* Process a normal inferior event which will result in target_wait
208 /* Deal with an error on the inferior. */
210 /* We are called because a timer went off. */
212 /* We are called to do stuff after the inferior stops. */
214 /* We are called to do some stuff after the inferior stops, but we
215 are expected to reenter the proceed() and
216 handle_inferior_event() functions. This is used only in case of
217 'step n' like commands. */
221 /* Target objects which can be transfered using target_read,
222 target_write, et cetera. */
226 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
228 /* SPU target specific transfer. See "spu-tdep.c". */
230 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
231 TARGET_OBJECT_MEMORY
,
232 /* Memory, avoiding GDB's data cache and trusting the executable.
233 Target implementations of to_xfer_partial never need to handle
234 this object, and most callers should not use it. */
235 TARGET_OBJECT_RAW_MEMORY
,
236 /* Memory known to be part of the target's stack. This is cached even
237 if it is not in a region marked as such, since it is known to be
239 TARGET_OBJECT_STACK_MEMORY
,
240 /* Kernel Unwind Table. See "ia64-tdep.c". */
241 TARGET_OBJECT_UNWIND_TABLE
,
242 /* Transfer auxilliary vector. */
244 /* StackGhost cookie. See "sparc-tdep.c". */
245 TARGET_OBJECT_WCOOKIE
,
246 /* Target memory map in XML format. */
247 TARGET_OBJECT_MEMORY_MAP
,
248 /* Flash memory. This object can be used to write contents to
249 a previously erased flash memory. Using it without erasing
250 flash can have unexpected results. Addresses are physical
251 address on target, and not relative to flash start. */
253 /* Available target-specific features, e.g. registers and coprocessors.
254 See "target-descriptions.c". ANNEX should never be empty. */
255 TARGET_OBJECT_AVAILABLE_FEATURES
,
256 /* Currently loaded libraries, in XML format. */
257 TARGET_OBJECT_LIBRARIES
,
258 /* Get OS specific data. The ANNEX specifies the type (running
260 TARGET_OBJECT_OSDATA
,
261 /* Extra signal info. Usually the contents of `siginfo_t' on unix
263 TARGET_OBJECT_SIGNAL_INFO
,
264 /* The list of threads that are being debugged. */
265 TARGET_OBJECT_THREADS
,
266 /* Collected static trace data. */
267 TARGET_OBJECT_STATIC_TRACE_DATA
,
268 /* Possible future objects: TARGET_OBJECT_FILE, ... */
271 /* Enumeration of the kinds of traceframe searches that a target may
272 be able to perform. */
283 typedef struct static_tracepoint_marker
*static_tracepoint_marker_p
;
284 DEF_VEC_P(static_tracepoint_marker_p
);
286 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
287 OBJECT. The OFFSET, for a seekable object, specifies the
288 starting point. The ANNEX can be used to provide additional
289 data-specific information to the target.
291 Return the number of bytes actually transfered, or -1 if the
292 transfer is not supported or otherwise fails. Return of a positive
293 value less than LEN indicates that no further transfer is possible.
294 Unlike the raw to_xfer_partial interface, callers of these
295 functions do not need to retry partial transfers. */
297 extern LONGEST
target_read (struct target_ops
*ops
,
298 enum target_object object
,
299 const char *annex
, gdb_byte
*buf
,
300 ULONGEST offset
, LONGEST len
);
302 struct memory_read_result
304 /* First address that was read. */
306 /* Past-the-end address. */
311 typedef struct memory_read_result memory_read_result_s
;
312 DEF_VEC_O(memory_read_result_s
);
314 extern void free_memory_read_result_vector (void *);
316 extern VEC(memory_read_result_s
)* read_memory_robust (struct target_ops
*ops
,
320 extern LONGEST
target_write (struct target_ops
*ops
,
321 enum target_object object
,
322 const char *annex
, const gdb_byte
*buf
,
323 ULONGEST offset
, LONGEST len
);
325 /* Similar to target_write, except that it also calls PROGRESS with
326 the number of bytes written and the opaque BATON after every
327 successful partial write (and before the first write). This is
328 useful for progress reporting and user interaction while writing
329 data. To abort the transfer, the progress callback can throw an
332 LONGEST
target_write_with_progress (struct target_ops
*ops
,
333 enum target_object object
,
334 const char *annex
, const gdb_byte
*buf
,
335 ULONGEST offset
, LONGEST len
,
336 void (*progress
) (ULONGEST
, void *),
339 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
340 be read using OPS. The return value will be -1 if the transfer
341 fails or is not supported; 0 if the object is empty; or the length
342 of the object otherwise. If a positive value is returned, a
343 sufficiently large buffer will be allocated using xmalloc and
344 returned in *BUF_P containing the contents of the object.
346 This method should be used for objects sufficiently small to store
347 in a single xmalloc'd buffer, when no fixed bound on the object's
348 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
349 through this function. */
351 extern LONGEST
target_read_alloc (struct target_ops
*ops
,
352 enum target_object object
,
353 const char *annex
, gdb_byte
**buf_p
);
355 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
356 returned as a string, allocated using xmalloc. If an error occurs
357 or the transfer is unsupported, NULL is returned. Empty objects
358 are returned as allocated but empty strings. A warning is issued
359 if the result contains any embedded NUL bytes. */
361 extern char *target_read_stralloc (struct target_ops
*ops
,
362 enum target_object object
,
365 /* Wrappers to target read/write that perform memory transfers. They
366 throw an error if the memory transfer fails.
368 NOTE: cagney/2003-10-23: The naming schema is lifted from
369 "frame.h". The parameter order is lifted from get_frame_memory,
370 which in turn lifted it from read_memory. */
372 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
373 gdb_byte
*buf
, LONGEST len
);
374 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
375 CORE_ADDR addr
, int len
,
376 enum bfd_endian byte_order
);
378 struct thread_info
; /* fwd decl for parameter list below: */
382 struct target_ops
*beneath
; /* To the target under this one. */
383 char *to_shortname
; /* Name this target type */
384 char *to_longname
; /* Name for printing */
385 char *to_doc
; /* Documentation. Does not include trailing
386 newline, and starts with a one-line descrip-
387 tion (probably similar to to_longname). */
388 /* Per-target scratch pad. */
390 /* The open routine takes the rest of the parameters from the
391 command, and (if successful) pushes a new target onto the
392 stack. Targets should supply this routine, if only to provide
394 void (*to_open
) (char *, int);
395 /* Old targets with a static target vector provide "to_close".
396 New re-entrant targets provide "to_xclose" and that is expected
397 to xfree everything (including the "struct target_ops"). */
398 void (*to_xclose
) (struct target_ops
*targ
, int quitting
);
399 void (*to_close
) (int);
400 void (*to_attach
) (struct target_ops
*ops
, char *, int);
401 void (*to_post_attach
) (int);
402 void (*to_detach
) (struct target_ops
*ops
, char *, int);
403 void (*to_disconnect
) (struct target_ops
*, char *, int);
404 void (*to_resume
) (struct target_ops
*, ptid_t
, int, enum target_signal
);
405 ptid_t (*to_wait
) (struct target_ops
*,
406 ptid_t
, struct target_waitstatus
*, int);
407 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int);
408 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int);
409 void (*to_prepare_to_store
) (struct regcache
*);
411 /* Transfer LEN bytes of memory between GDB address MYADDR and
412 target address MEMADDR. If WRITE, transfer them to the target, else
413 transfer them from the target. TARGET is the target from which we
416 Return value, N, is one of the following:
418 0 means that we can't handle this. If errno has been set, it is the
419 error which prevented us from doing it (FIXME: What about bfd_error?).
421 positive (call it N) means that we have transferred N bytes
422 starting at MEMADDR. We might be able to handle more bytes
423 beyond this length, but no promises.
425 negative (call its absolute value N) means that we cannot
426 transfer right at MEMADDR, but we could transfer at least
427 something at MEMADDR + N.
429 NOTE: cagney/2004-10-01: This has been entirely superseeded by
430 to_xfer_partial and inferior inheritance. */
432 int (*deprecated_xfer_memory
) (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
434 struct mem_attrib
*attrib
,
435 struct target_ops
*target
);
437 void (*to_files_info
) (struct target_ops
*);
438 int (*to_insert_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
439 int (*to_remove_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
440 int (*to_can_use_hw_breakpoint
) (int, int, int);
441 int (*to_insert_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
442 int (*to_remove_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
444 /* Documentation of what the two routines below are expected to do is
445 provided with the corresponding target_* macros. */
446 int (*to_remove_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
447 int (*to_insert_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
449 int (*to_stopped_by_watchpoint
) (void);
450 int to_have_steppable_watchpoint
;
451 int to_have_continuable_watchpoint
;
452 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*);
453 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
454 CORE_ADDR
, CORE_ADDR
, int);
455 int (*to_region_ok_for_hw_watchpoint
) (CORE_ADDR
, int);
456 int (*to_can_accel_watchpoint_condition
) (CORE_ADDR
, int, int,
457 struct expression
*);
458 void (*to_terminal_init
) (void);
459 void (*to_terminal_inferior
) (void);
460 void (*to_terminal_ours_for_output
) (void);
461 void (*to_terminal_ours
) (void);
462 void (*to_terminal_save_ours
) (void);
463 void (*to_terminal_info
) (char *, int);
464 void (*to_kill
) (struct target_ops
*);
465 void (*to_load
) (char *, int);
466 int (*to_lookup_symbol
) (char *, CORE_ADDR
*);
467 void (*to_create_inferior
) (struct target_ops
*,
468 char *, char *, char **, int);
469 void (*to_post_startup_inferior
) (ptid_t
);
470 void (*to_acknowledge_created_inferior
) (int);
471 void (*to_insert_fork_catchpoint
) (int);
472 int (*to_remove_fork_catchpoint
) (int);
473 void (*to_insert_vfork_catchpoint
) (int);
474 int (*to_remove_vfork_catchpoint
) (int);
475 int (*to_follow_fork
) (struct target_ops
*, int);
476 void (*to_insert_exec_catchpoint
) (int);
477 int (*to_remove_exec_catchpoint
) (int);
478 int (*to_set_syscall_catchpoint
) (int, int, int, int, int *);
479 int (*to_has_exited
) (int, int, int *);
480 void (*to_mourn_inferior
) (struct target_ops
*);
481 int (*to_can_run
) (void);
482 void (*to_notice_signals
) (ptid_t ptid
);
483 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
);
484 void (*to_find_new_threads
) (struct target_ops
*);
485 char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
);
486 char *(*to_extra_thread_info
) (struct thread_info
*);
487 void (*to_stop
) (ptid_t
);
488 void (*to_rcmd
) (char *command
, struct ui_file
*output
);
489 char *(*to_pid_to_exec_file
) (int pid
);
490 void (*to_log_command
) (const char *);
491 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*);
492 enum strata to_stratum
;
493 int (*to_has_all_memory
) (struct target_ops
*);
494 int (*to_has_memory
) (struct target_ops
*);
495 int (*to_has_stack
) (struct target_ops
*);
496 int (*to_has_registers
) (struct target_ops
*);
497 int (*to_has_execution
) (struct target_ops
*);
498 int to_has_thread_control
; /* control thread execution */
499 int to_attach_no_wait
;
500 /* ASYNC target controls */
501 int (*to_can_async_p
) (void);
502 int (*to_is_async_p
) (void);
503 void (*to_async
) (void (*) (enum inferior_event_type
, void *), void *);
504 int (*to_async_mask
) (int);
505 int (*to_supports_non_stop
) (void);
506 /* find_memory_regions support method for gcore */
507 int (*to_find_memory_regions
) (int (*) (CORE_ADDR
,
512 /* make_corefile_notes support method for gcore */
513 char * (*to_make_corefile_notes
) (bfd
*, int *);
514 /* get_bookmark support method for bookmarks */
515 gdb_byte
* (*to_get_bookmark
) (char *, int);
516 /* goto_bookmark support method for bookmarks */
517 void (*to_goto_bookmark
) (gdb_byte
*, int);
518 /* Return the thread-local address at OFFSET in the
519 thread-local storage for the thread PTID and the shared library
520 or executable file given by OBJFILE. If that block of
521 thread-local storage hasn't been allocated yet, this function
522 may return an error. */
523 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
525 CORE_ADDR load_module_addr
,
528 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
529 OBJECT. The OFFSET, for a seekable object, specifies the
530 starting point. The ANNEX can be used to provide additional
531 data-specific information to the target.
533 Return the number of bytes actually transfered, zero when no
534 further transfer is possible, and -1 when the transfer is not
535 supported. Return of a positive value smaller than LEN does
536 not indicate the end of the object, only the end of the
537 transfer; higher level code should continue transferring if
538 desired. This is handled in target.c.
540 The interface does not support a "retry" mechanism. Instead it
541 assumes that at least one byte will be transfered on each
544 NOTE: cagney/2003-10-17: The current interface can lead to
545 fragmented transfers. Lower target levels should not implement
546 hacks, such as enlarging the transfer, in an attempt to
547 compensate for this. Instead, the target stack should be
548 extended so that it implements supply/collect methods and a
549 look-aside object cache. With that available, the lowest
550 target can safely and freely "push" data up the stack.
552 See target_read and target_write for more information. One,
553 and only one, of readbuf or writebuf must be non-NULL. */
555 LONGEST (*to_xfer_partial
) (struct target_ops
*ops
,
556 enum target_object object
, const char *annex
,
557 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
558 ULONGEST offset
, LONGEST len
);
560 /* Returns the memory map for the target. A return value of NULL
561 means that no memory map is available. If a memory address
562 does not fall within any returned regions, it's assumed to be
563 RAM. The returned memory regions should not overlap.
565 The order of regions does not matter; target_memory_map will
566 sort regions by starting address. For that reason, this
567 function should not be called directly except via
570 This method should not cache data; if the memory map could
571 change unexpectedly, it should be invalidated, and higher
572 layers will re-fetch it. */
573 VEC(mem_region_s
) *(*to_memory_map
) (struct target_ops
*);
575 /* Erases the region of flash memory starting at ADDRESS, of
578 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
579 on flash block boundaries, as reported by 'to_memory_map'. */
580 void (*to_flash_erase
) (struct target_ops
*,
581 ULONGEST address
, LONGEST length
);
583 /* Finishes a flash memory write sequence. After this operation
584 all flash memory should be available for writing and the result
585 of reading from areas written by 'to_flash_write' should be
586 equal to what was written. */
587 void (*to_flash_done
) (struct target_ops
*);
589 /* Describe the architecture-specific features of this target.
590 Returns the description found, or NULL if no description
592 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
);
594 /* Build the PTID of the thread on which a given task is running,
595 based on LWP and THREAD. These values are extracted from the
596 task Private_Data section of the Ada Task Control Block, and
597 their interpretation depends on the target. */
598 ptid_t (*to_get_ada_task_ptid
) (long lwp
, long thread
);
600 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
601 Return 0 if *READPTR is already at the end of the buffer.
602 Return -1 if there is insufficient buffer for a whole entry.
603 Return 1 if an entry was read into *TYPEP and *VALP. */
604 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
605 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
);
607 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
608 sequence of bytes in PATTERN with length PATTERN_LEN.
610 The result is 1 if found, 0 if not found, and -1 if there was an error
611 requiring halting of the search (e.g. memory read error).
612 If the pattern is found the address is recorded in FOUND_ADDRP. */
613 int (*to_search_memory
) (struct target_ops
*ops
,
614 CORE_ADDR start_addr
, ULONGEST search_space_len
,
615 const gdb_byte
*pattern
, ULONGEST pattern_len
,
616 CORE_ADDR
*found_addrp
);
618 /* Can target execute in reverse? */
619 int (*to_can_execute_reverse
) (void);
621 /* Does this target support debugging multiple processes
623 int (*to_supports_multi_process
) (void);
625 /* Determine current architecture of thread PTID.
627 The target is supposed to determine the architecture of the code where
628 the target is currently stopped at (on Cell, if a target is in spu_run,
629 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
630 This is architecture used to perform decr_pc_after_break adjustment,
631 and also determines the frame architecture of the innermost frame.
632 ptrace operations need to operate according to target_gdbarch.
634 The default implementation always returns target_gdbarch. */
635 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
);
637 /* Determine current address space of thread PTID.
639 The default implementation always returns the inferior's
641 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
644 /* Tracepoint-related operations. */
646 /* Prepare the target for a tracing run. */
647 void (*to_trace_init
) (void);
649 /* Send full details of a tracepoint to the target. */
650 void (*to_download_tracepoint
) (struct breakpoint
*t
);
652 /* Send full details of a trace state variable to the target. */
653 void (*to_download_trace_state_variable
) (struct trace_state_variable
*tsv
);
655 /* Inform the target info of memory regions that are readonly
656 (such as text sections), and so it should return data from
657 those rather than look in the trace buffer. */
658 void (*to_trace_set_readonly_regions
) (void);
660 /* Start a trace run. */
661 void (*to_trace_start
) (void);
663 /* Get the current status of a tracing run. */
664 int (*to_get_trace_status
) (struct trace_status
*ts
);
666 /* Stop a trace run. */
667 void (*to_trace_stop
) (void);
669 /* Ask the target to find a trace frame of the given type TYPE,
670 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
671 number of the trace frame, and also the tracepoint number at
672 TPP. If no trace frame matches, return -1. May throw if the
674 int (*to_trace_find
) (enum trace_find_type type
, int num
,
675 ULONGEST addr1
, ULONGEST addr2
, int *tpp
);
677 /* Get the value of the trace state variable number TSV, returning
678 1 if the value is known and writing the value itself into the
679 location pointed to by VAL, else returning 0. */
680 int (*to_get_trace_state_variable_value
) (int tsv
, LONGEST
*val
);
682 int (*to_save_trace_data
) (const char *filename
);
684 int (*to_upload_tracepoints
) (struct uploaded_tp
**utpp
);
686 int (*to_upload_trace_state_variables
) (struct uploaded_tsv
**utsvp
);
688 LONGEST (*to_get_raw_trace_data
) (gdb_byte
*buf
,
689 ULONGEST offset
, LONGEST len
);
691 /* Set the target's tracing behavior in response to unexpected
692 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
693 void (*to_set_disconnected_tracing
) (int val
);
694 void (*to_set_circular_trace_buffer
) (int val
);
696 /* Return the processor core that thread PTID was last seen on.
697 This information is updated only when:
698 - update_thread_list is called
700 If the core cannot be determined -- either for the specified thread, or
701 right now, or in this debug session, or for this target -- return -1. */
702 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
);
704 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
705 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
706 a match, 0 if there's a mismatch, and -1 if an error is
707 encountered while reading memory. */
708 int (*to_verify_memory
) (struct target_ops
*, const gdb_byte
*data
,
709 CORE_ADDR memaddr
, ULONGEST size
);
711 /* Return the address of the start of the Thread Information Block
712 a Windows OS specific feature. */
713 int (*to_get_tib_address
) (ptid_t ptid
, CORE_ADDR
*addr
);
715 /* Send the new settings of write permission variables. */
716 void (*to_set_permissions
) (void);
718 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
719 with its details. Return 1 on success, 0 on failure. */
720 int (*to_static_tracepoint_marker_at
) (CORE_ADDR
,
721 struct static_tracepoint_marker
*marker
);
723 /* Return a vector of all tracepoints markers string id ID, or all
724 markers if ID is NULL. */
725 VEC(static_tracepoint_marker_p
) *(*to_static_tracepoint_markers_by_strid
)
729 /* Need sub-structure for target machine related rather than comm related?
733 /* Magic number for checking ops size. If a struct doesn't end with this
734 number, somebody changed the declaration but didn't change all the
735 places that initialize one. */
737 #define OPS_MAGIC 3840
739 /* The ops structure for our "current" target process. This should
740 never be NULL. If there is no target, it points to the dummy_target. */
742 extern struct target_ops current_target
;
744 /* Define easy words for doing these operations on our current target. */
746 #define target_shortname (current_target.to_shortname)
747 #define target_longname (current_target.to_longname)
749 /* Does whatever cleanup is required for a target that we are no
750 longer going to be calling. QUITTING indicates that GDB is exiting
751 and should not get hung on an error (otherwise it is important to
752 perform clean termination, even if it takes a while). This routine
753 is automatically always called when popping the target off the
754 target stack (to_beneath is undefined). Closing file descriptors
755 and freeing all memory allocated memory are typical things it
758 void target_close (struct target_ops
*targ
, int quitting
);
760 /* Attaches to a process on the target side. Arguments are as passed
761 to the `attach' command by the user. This routine can be called
762 when the target is not on the target-stack, if the target_can_run
763 routine returns 1; in that case, it must push itself onto the stack.
764 Upon exit, the target should be ready for normal operations, and
765 should be ready to deliver the status of the process immediately
766 (without waiting) to an upcoming target_wait call. */
768 void target_attach (char *, int);
770 /* Some targets don't generate traps when attaching to the inferior,
771 or their target_attach implementation takes care of the waiting.
772 These targets must set to_attach_no_wait. */
774 #define target_attach_no_wait \
775 (current_target.to_attach_no_wait)
777 /* The target_attach operation places a process under debugger control,
778 and stops the process.
780 This operation provides a target-specific hook that allows the
781 necessary bookkeeping to be performed after an attach completes. */
782 #define target_post_attach(pid) \
783 (*current_target.to_post_attach) (pid)
785 /* Takes a program previously attached to and detaches it.
786 The program may resume execution (some targets do, some don't) and will
787 no longer stop on signals, etc. We better not have left any breakpoints
788 in the program or it'll die when it hits one. ARGS is arguments
789 typed by the user (e.g. a signal to send the process). FROM_TTY
790 says whether to be verbose or not. */
792 extern void target_detach (char *, int);
794 /* Disconnect from the current target without resuming it (leaving it
795 waiting for a debugger). */
797 extern void target_disconnect (char *, int);
799 /* Resume execution of the target process PTID. STEP says whether to
800 single-step or to run free; SIGGNAL is the signal to be given to
801 the target, or TARGET_SIGNAL_0 for no signal. The caller may not
802 pass TARGET_SIGNAL_DEFAULT. */
804 extern void target_resume (ptid_t ptid
, int step
, enum target_signal signal
);
806 /* Wait for process pid to do something. PTID = -1 to wait for any
807 pid to do something. Return pid of child, or -1 in case of error;
808 store status through argument pointer STATUS. Note that it is
809 _NOT_ OK to throw_exception() out of target_wait() without popping
810 the debugging target from the stack; GDB isn't prepared to get back
811 to the prompt with a debugging target but without the frame cache,
812 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
815 extern ptid_t
target_wait (ptid_t ptid
, struct target_waitstatus
*status
,
818 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
820 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
822 /* Store at least register REGNO, or all regs if REGNO == -1.
823 It can store as many registers as it wants to, so target_prepare_to_store
824 must have been previously called. Calls error() if there are problems. */
826 extern void target_store_registers (struct regcache
*regcache
, int regs
);
828 /* Get ready to modify the registers array. On machines which store
829 individual registers, this doesn't need to do anything. On machines
830 which store all the registers in one fell swoop, this makes sure
831 that REGISTERS contains all the registers from the program being
834 #define target_prepare_to_store(regcache) \
835 (*current_target.to_prepare_to_store) (regcache)
837 /* Determine current address space of thread PTID. */
839 struct address_space
*target_thread_address_space (ptid_t
);
841 /* Returns true if this target can debug multiple processes
844 #define target_supports_multi_process() \
845 (*current_target.to_supports_multi_process) ()
847 /* Invalidate all target dcaches. */
848 extern void target_dcache_invalidate (void);
850 extern int target_read_string (CORE_ADDR
, char **, int, int *);
852 extern int target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
);
854 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
);
856 extern int target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
859 /* Fetches the target's memory map. If one is found it is sorted
860 and returned, after some consistency checking. Otherwise, NULL
862 VEC(mem_region_s
) *target_memory_map (void);
864 /* Erase the specified flash region. */
865 void target_flash_erase (ULONGEST address
, LONGEST length
);
867 /* Finish a sequence of flash operations. */
868 void target_flash_done (void);
870 /* Describes a request for a memory write operation. */
871 struct memory_write_request
873 /* Begining address that must be written. */
875 /* Past-the-end address. */
877 /* The data to write. */
879 /* A callback baton for progress reporting for this request. */
882 typedef struct memory_write_request memory_write_request_s
;
883 DEF_VEC_O(memory_write_request_s
);
885 /* Enumeration specifying different flash preservation behaviour. */
886 enum flash_preserve_mode
892 /* Write several memory blocks at once. This version can be more
893 efficient than making several calls to target_write_memory, in
894 particular because it can optimize accesses to flash memory.
896 Moreover, this is currently the only memory access function in gdb
897 that supports writing to flash memory, and it should be used for
898 all cases where access to flash memory is desirable.
900 REQUESTS is the vector (see vec.h) of memory_write_request.
901 PRESERVE_FLASH_P indicates what to do with blocks which must be
902 erased, but not completely rewritten.
903 PROGRESS_CB is a function that will be periodically called to provide
904 feedback to user. It will be called with the baton corresponding
905 to the request currently being written. It may also be called
906 with a NULL baton, when preserved flash sectors are being rewritten.
908 The function returns 0 on success, and error otherwise. */
909 int target_write_memory_blocks (VEC(memory_write_request_s
) *requests
,
910 enum flash_preserve_mode preserve_flash_p
,
911 void (*progress_cb
) (ULONGEST
, void *));
915 extern int inferior_has_forked (ptid_t pid
, ptid_t
*child_pid
);
917 extern int inferior_has_vforked (ptid_t pid
, ptid_t
*child_pid
);
919 extern int inferior_has_execd (ptid_t pid
, char **execd_pathname
);
921 extern int inferior_has_called_syscall (ptid_t pid
, int *syscall_number
);
923 /* Print a line about the current target. */
925 #define target_files_info() \
926 (*current_target.to_files_info) (¤t_target)
928 /* Insert a breakpoint at address BP_TGT->placed_address in the target
929 machine. Result is 0 for success, or an errno value. */
931 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
932 struct bp_target_info
*bp_tgt
);
934 /* Remove a breakpoint at address BP_TGT->placed_address in the target
935 machine. Result is 0 for success, or an errno value. */
937 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
938 struct bp_target_info
*bp_tgt
);
940 /* Initialize the terminal settings we record for the inferior,
941 before we actually run the inferior. */
943 #define target_terminal_init() \
944 (*current_target.to_terminal_init) ()
946 /* Put the inferior's terminal settings into effect.
947 This is preparation for starting or resuming the inferior. */
949 extern void target_terminal_inferior (void);
951 /* Put some of our terminal settings into effect,
952 enough to get proper results from our output,
953 but do not change into or out of RAW mode
954 so that no input is discarded.
956 After doing this, either terminal_ours or terminal_inferior
957 should be called to get back to a normal state of affairs. */
959 #define target_terminal_ours_for_output() \
960 (*current_target.to_terminal_ours_for_output) ()
962 /* Put our terminal settings into effect.
963 First record the inferior's terminal settings
964 so they can be restored properly later. */
966 #define target_terminal_ours() \
967 (*current_target.to_terminal_ours) ()
969 /* Save our terminal settings.
970 This is called from TUI after entering or leaving the curses
971 mode. Since curses modifies our terminal this call is here
972 to take this change into account. */
974 #define target_terminal_save_ours() \
975 (*current_target.to_terminal_save_ours) ()
977 /* Print useful information about our terminal status, if such a thing
980 #define target_terminal_info(arg, from_tty) \
981 (*current_target.to_terminal_info) (arg, from_tty)
983 /* Kill the inferior process. Make it go away. */
985 extern void target_kill (void);
987 /* Load an executable file into the target process. This is expected
988 to not only bring new code into the target process, but also to
989 update GDB's symbol tables to match.
991 ARG contains command-line arguments, to be broken down with
992 buildargv (). The first non-switch argument is the filename to
993 load, FILE; the second is a number (as parsed by strtoul (..., ...,
994 0)), which is an offset to apply to the load addresses of FILE's
995 sections. The target may define switches, or other non-switch
996 arguments, as it pleases. */
998 extern void target_load (char *arg
, int from_tty
);
1000 /* Look up a symbol in the target's symbol table. NAME is the symbol
1001 name. ADDRP is a CORE_ADDR * pointing to where the value of the
1002 symbol should be returned. The result is 0 if successful, nonzero
1003 if the symbol does not exist in the target environment. This
1004 function should not call error() if communication with the target
1005 is interrupted, since it is called from symbol reading, but should
1006 return nonzero, possibly doing a complain(). */
1008 #define target_lookup_symbol(name, addrp) \
1009 (*current_target.to_lookup_symbol) (name, addrp)
1011 /* Start an inferior process and set inferior_ptid to its pid.
1012 EXEC_FILE is the file to run.
1013 ALLARGS is a string containing the arguments to the program.
1014 ENV is the environment vector to pass. Errors reported with error().
1015 On VxWorks and various standalone systems, we ignore exec_file. */
1017 void target_create_inferior (char *exec_file
, char *args
,
1018 char **env
, int from_tty
);
1020 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1021 notification of inferior events such as fork and vork immediately
1022 after the inferior is created. (This because of how gdb gets an
1023 inferior created via invoking a shell to do it. In such a scenario,
1024 if the shell init file has commands in it, the shell will fork and
1025 exec for each of those commands, and we will see each such fork
1028 Such targets will supply an appropriate definition for this function. */
1030 #define target_post_startup_inferior(ptid) \
1031 (*current_target.to_post_startup_inferior) (ptid)
1033 /* On some targets, the sequence of starting up an inferior requires
1034 some synchronization between gdb and the new inferior process, PID. */
1036 #define target_acknowledge_created_inferior(pid) \
1037 (*current_target.to_acknowledge_created_inferior) (pid)
1039 /* On some targets, we can catch an inferior fork or vfork event when
1040 it occurs. These functions insert/remove an already-created
1041 catchpoint for such events. */
1043 #define target_insert_fork_catchpoint(pid) \
1044 (*current_target.to_insert_fork_catchpoint) (pid)
1046 #define target_remove_fork_catchpoint(pid) \
1047 (*current_target.to_remove_fork_catchpoint) (pid)
1049 #define target_insert_vfork_catchpoint(pid) \
1050 (*current_target.to_insert_vfork_catchpoint) (pid)
1052 #define target_remove_vfork_catchpoint(pid) \
1053 (*current_target.to_remove_vfork_catchpoint) (pid)
1055 /* If the inferior forks or vforks, this function will be called at
1056 the next resume in order to perform any bookkeeping and fiddling
1057 necessary to continue debugging either the parent or child, as
1058 requested, and releasing the other. Information about the fork
1059 or vfork event is available via get_last_target_status ().
1060 This function returns 1 if the inferior should not be resumed
1061 (i.e. there is another event pending). */
1063 int target_follow_fork (int follow_child
);
1065 /* On some targets, we can catch an inferior exec event when it
1066 occurs. These functions insert/remove an already-created
1067 catchpoint for such events. */
1069 #define target_insert_exec_catchpoint(pid) \
1070 (*current_target.to_insert_exec_catchpoint) (pid)
1072 #define target_remove_exec_catchpoint(pid) \
1073 (*current_target.to_remove_exec_catchpoint) (pid)
1077 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1078 If NEEDED is zero, it means the target can disable the mechanism to
1079 catch system calls because there are no more catchpoints of this type.
1081 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1082 being requested. In this case, both TABLE_SIZE and TABLE should
1085 TABLE_SIZE is the number of elements in TABLE. It only matters if
1088 TABLE is an array of ints, indexed by syscall number. An element in
1089 this array is nonzero if that syscall should be caught. This argument
1090 only matters if ANY_COUNT is zero. */
1092 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1093 (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \
1096 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1097 exit code of PID, if any. */
1099 #define target_has_exited(pid,wait_status,exit_status) \
1100 (*current_target.to_has_exited) (pid,wait_status,exit_status)
1102 /* The debugger has completed a blocking wait() call. There is now
1103 some process event that must be processed. This function should
1104 be defined by those targets that require the debugger to perform
1105 cleanup or internal state changes in response to the process event. */
1107 /* The inferior process has died. Do what is right. */
1109 void target_mourn_inferior (void);
1111 /* Does target have enough data to do a run or attach command? */
1113 #define target_can_run(t) \
1114 ((t)->to_can_run) ()
1116 /* post process changes to signal handling in the inferior. */
1118 #define target_notice_signals(ptid) \
1119 (*current_target.to_notice_signals) (ptid)
1121 /* Check to see if a thread is still alive. */
1123 extern int target_thread_alive (ptid_t ptid
);
1125 /* Query for new threads and add them to the thread list. */
1127 extern void target_find_new_threads (void);
1129 /* Make target stop in a continuable fashion. (For instance, under
1130 Unix, this should act like SIGSTOP). This function is normally
1131 used by GUIs to implement a stop button. */
1133 extern void target_stop (ptid_t ptid
);
1135 /* Send the specified COMMAND to the target's monitor
1136 (shell,interpreter) for execution. The result of the query is
1137 placed in OUTBUF. */
1139 #define target_rcmd(command, outbuf) \
1140 (*current_target.to_rcmd) (command, outbuf)
1143 /* Does the target include all of memory, or only part of it? This
1144 determines whether we look up the target chain for other parts of
1145 memory if this target can't satisfy a request. */
1147 extern int target_has_all_memory_1 (void);
1148 #define target_has_all_memory target_has_all_memory_1 ()
1150 /* Does the target include memory? (Dummy targets don't.) */
1152 extern int target_has_memory_1 (void);
1153 #define target_has_memory target_has_memory_1 ()
1155 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1156 we start a process.) */
1158 extern int target_has_stack_1 (void);
1159 #define target_has_stack target_has_stack_1 ()
1161 /* Does the target have registers? (Exec files don't.) */
1163 extern int target_has_registers_1 (void);
1164 #define target_has_registers target_has_registers_1 ()
1166 /* Does the target have execution? Can we make it jump (through
1167 hoops), or pop its stack a few times? This means that the current
1168 target is currently executing; for some targets, that's the same as
1169 whether or not the target is capable of execution, but there are
1170 also targets which can be current while not executing. In that
1171 case this will become true after target_create_inferior or
1174 extern int target_has_execution_1 (void);
1175 #define target_has_execution target_has_execution_1 ()
1177 /* Default implementations for process_stratum targets. Return true
1178 if there's a selected inferior, false otherwise. */
1180 extern int default_child_has_all_memory (struct target_ops
*ops
);
1181 extern int default_child_has_memory (struct target_ops
*ops
);
1182 extern int default_child_has_stack (struct target_ops
*ops
);
1183 extern int default_child_has_registers (struct target_ops
*ops
);
1184 extern int default_child_has_execution (struct target_ops
*ops
);
1186 /* Can the target support the debugger control of thread execution?
1187 Can it lock the thread scheduler? */
1189 #define target_can_lock_scheduler \
1190 (current_target.to_has_thread_control & tc_schedlock)
1192 /* Should the target enable async mode if it is supported? Temporary
1193 cludge until async mode is a strict superset of sync mode. */
1194 extern int target_async_permitted
;
1196 /* Can the target support asynchronous execution? */
1197 #define target_can_async_p() (current_target.to_can_async_p ())
1199 /* Is the target in asynchronous execution mode? */
1200 #define target_is_async_p() (current_target.to_is_async_p ())
1202 int target_supports_non_stop (void);
1204 /* Put the target in async mode with the specified callback function. */
1205 #define target_async(CALLBACK,CONTEXT) \
1206 (current_target.to_async ((CALLBACK), (CONTEXT)))
1208 /* This is to be used ONLY within call_function_by_hand(). It provides
1209 a workaround, to have inferior function calls done in sychronous
1210 mode, even though the target is asynchronous. After
1211 target_async_mask(0) is called, calls to target_can_async_p() will
1212 return FALSE , so that target_resume() will not try to start the
1213 target asynchronously. After the inferior stops, we IMMEDIATELY
1214 restore the previous nature of the target, by calling
1215 target_async_mask(1). After that, target_can_async_p() will return
1216 TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED.
1218 FIXME ezannoni 1999-12-13: we won't need this once we move
1219 the turning async on and off to the single execution commands,
1220 from where it is done currently, in remote_resume(). */
1222 #define target_async_mask(MASK) \
1223 (current_target.to_async_mask (MASK))
1225 /* Converts a process id to a string. Usually, the string just contains
1226 `process xyz', but on some systems it may contain
1227 `process xyz thread abc'. */
1229 extern char *target_pid_to_str (ptid_t ptid
);
1231 extern char *normal_pid_to_str (ptid_t ptid
);
1233 /* Return a short string describing extra information about PID,
1234 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1237 #define target_extra_thread_info(TP) \
1238 (current_target.to_extra_thread_info (TP))
1240 /* Attempts to find the pathname of the executable file
1241 that was run to create a specified process.
1243 The process PID must be stopped when this operation is used.
1245 If the executable file cannot be determined, NULL is returned.
1247 Else, a pointer to a character string containing the pathname
1248 is returned. This string should be copied into a buffer by
1249 the client if the string will not be immediately used, or if
1252 #define target_pid_to_exec_file(pid) \
1253 (current_target.to_pid_to_exec_file) (pid)
1255 /* See the to_thread_architecture description in struct target_ops. */
1257 #define target_thread_architecture(ptid) \
1258 (current_target.to_thread_architecture (¤t_target, ptid))
1261 * Iterator function for target memory regions.
1262 * Calls a callback function once for each memory region 'mapped'
1263 * in the child process. Defined as a simple macro rather than
1264 * as a function macro so that it can be tested for nullity.
1267 #define target_find_memory_regions(FUNC, DATA) \
1268 (current_target.to_find_memory_regions) (FUNC, DATA)
1271 * Compose corefile .note section.
1274 #define target_make_corefile_notes(BFD, SIZE_P) \
1275 (current_target.to_make_corefile_notes) (BFD, SIZE_P)
1277 /* Bookmark interfaces. */
1278 #define target_get_bookmark(ARGS, FROM_TTY) \
1279 (current_target.to_get_bookmark) (ARGS, FROM_TTY)
1281 #define target_goto_bookmark(ARG, FROM_TTY) \
1282 (current_target.to_goto_bookmark) (ARG, FROM_TTY)
1284 /* Hardware watchpoint interfaces. */
1286 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1287 write). Only the INFERIOR_PTID task is being queried. */
1289 #define target_stopped_by_watchpoint \
1290 (*current_target.to_stopped_by_watchpoint)
1292 /* Non-zero if we have steppable watchpoints */
1294 #define target_have_steppable_watchpoint \
1295 (current_target.to_have_steppable_watchpoint)
1297 /* Non-zero if we have continuable watchpoints */
1299 #define target_have_continuable_watchpoint \
1300 (current_target.to_have_continuable_watchpoint)
1302 /* Provide defaults for hardware watchpoint functions. */
1304 /* If the *_hw_beakpoint functions have not been defined
1305 elsewhere use the definitions in the target vector. */
1307 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
1308 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
1309 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
1310 (including this one?). OTHERTYPE is who knows what... */
1312 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1313 (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE);
1315 #define target_region_ok_for_hw_watchpoint(addr, len) \
1316 (*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
1319 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1320 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1321 COND is the expression for its condition, or NULL if there's none.
1322 Returns 0 for success, 1 if the watchpoint type is not supported,
1325 #define target_insert_watchpoint(addr, len, type, cond) \
1326 (*current_target.to_insert_watchpoint) (addr, len, type, cond)
1328 #define target_remove_watchpoint(addr, len, type, cond) \
1329 (*current_target.to_remove_watchpoint) (addr, len, type, cond)
1331 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1332 (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt)
1334 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1335 (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt)
1337 /* Return non-zero if target knows the data address which triggered this
1338 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1339 INFERIOR_PTID task is being queried. */
1340 #define target_stopped_data_address(target, addr_p) \
1341 (*target.to_stopped_data_address) (target, addr_p)
1343 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1344 (*target.to_watchpoint_addr_within_range) (target, addr, start, length)
1346 /* Return non-zero if the target is capable of using hardware to evaluate
1347 the condition expression. In this case, if the condition is false when
1348 the watched memory location changes, execution may continue without the
1349 debugger being notified.
1351 Due to limitations in the hardware implementation, it may be capable of
1352 avoiding triggering the watchpoint in some cases where the condition
1353 expression is false, but may report some false positives as well.
1354 For this reason, GDB will still evaluate the condition expression when
1355 the watchpoint triggers. */
1356 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1357 (*current_target.to_can_accel_watchpoint_condition) (addr, len, type, cond)
1359 /* Target can execute in reverse? */
1360 #define target_can_execute_reverse \
1361 (current_target.to_can_execute_reverse ? \
1362 current_target.to_can_execute_reverse () : 0)
1364 extern const struct target_desc
*target_read_description (struct target_ops
*);
1366 #define target_get_ada_task_ptid(lwp, tid) \
1367 (*current_target.to_get_ada_task_ptid) (lwp,tid)
1369 /* Utility implementation of searching memory. */
1370 extern int simple_search_memory (struct target_ops
* ops
,
1371 CORE_ADDR start_addr
,
1372 ULONGEST search_space_len
,
1373 const gdb_byte
*pattern
,
1374 ULONGEST pattern_len
,
1375 CORE_ADDR
*found_addrp
);
1377 /* Main entry point for searching memory. */
1378 extern int target_search_memory (CORE_ADDR start_addr
,
1379 ULONGEST search_space_len
,
1380 const gdb_byte
*pattern
,
1381 ULONGEST pattern_len
,
1382 CORE_ADDR
*found_addrp
);
1384 /* Tracepoint-related operations. */
1386 #define target_trace_init() \
1387 (*current_target.to_trace_init) ()
1389 #define target_download_tracepoint(t) \
1390 (*current_target.to_download_tracepoint) (t)
1392 #define target_download_trace_state_variable(tsv) \
1393 (*current_target.to_download_trace_state_variable) (tsv)
1395 #define target_trace_start() \
1396 (*current_target.to_trace_start) ()
1398 #define target_trace_set_readonly_regions() \
1399 (*current_target.to_trace_set_readonly_regions) ()
1401 #define target_get_trace_status(ts) \
1402 (*current_target.to_get_trace_status) (ts)
1404 #define target_trace_stop() \
1405 (*current_target.to_trace_stop) ()
1407 #define target_trace_find(type,num,addr1,addr2,tpp) \
1408 (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp))
1410 #define target_get_trace_state_variable_value(tsv,val) \
1411 (*current_target.to_get_trace_state_variable_value) ((tsv), (val))
1413 #define target_save_trace_data(filename) \
1414 (*current_target.to_save_trace_data) (filename)
1416 #define target_upload_tracepoints(utpp) \
1417 (*current_target.to_upload_tracepoints) (utpp)
1419 #define target_upload_trace_state_variables(utsvp) \
1420 (*current_target.to_upload_trace_state_variables) (utsvp)
1422 #define target_get_raw_trace_data(buf,offset,len) \
1423 (*current_target.to_get_raw_trace_data) ((buf), (offset), (len))
1425 #define target_set_disconnected_tracing(val) \
1426 (*current_target.to_set_disconnected_tracing) (val)
1428 #define target_set_circular_trace_buffer(val) \
1429 (*current_target.to_set_circular_trace_buffer) (val)
1431 #define target_get_tib_address(ptid, addr) \
1432 (*current_target.to_get_tib_address) ((ptid), (addr))
1434 #define target_set_permissions() \
1435 (*current_target.to_set_permissions) ()
1437 #define target_static_tracepoint_marker_at(addr, marker) \
1438 (*current_target.to_static_tracepoint_marker_at) (addr, marker)
1440 #define target_static_tracepoint_markers_by_strid(marker_id) \
1441 (*current_target.to_static_tracepoint_markers_by_strid) (marker_id)
1443 /* Command logging facility. */
1445 #define target_log_command(p) \
1447 if (current_target.to_log_command) \
1448 (*current_target.to_log_command) (p); \
1452 extern int target_core_of_thread (ptid_t ptid
);
1454 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
1455 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
1456 if there's a mismatch, and -1 if an error is encountered while
1457 reading memory. Throws an error if the functionality is found not
1458 to be supported by the current target. */
1459 int target_verify_memory (const gdb_byte
*data
,
1460 CORE_ADDR memaddr
, ULONGEST size
);
1462 /* Routines for maintenance of the target structures...
1464 add_target: Add a target to the list of all possible targets.
1466 push_target: Make this target the top of the stack of currently used
1467 targets, within its particular stratum of the stack. Result
1468 is 0 if now atop the stack, nonzero if not on top (maybe
1471 unpush_target: Remove this from the stack of currently used targets,
1472 no matter where it is on the list. Returns 0 if no
1473 change, 1 if removed from stack.
1475 pop_target: Remove the top thing on the stack of current targets. */
1477 extern void add_target (struct target_ops
*);
1479 extern void push_target (struct target_ops
*);
1481 extern int unpush_target (struct target_ops
*);
1483 extern void target_pre_inferior (int);
1485 extern void target_preopen (int);
1487 extern void pop_target (void);
1489 /* Does whatever cleanup is required to get rid of all pushed targets.
1490 QUITTING is propagated to target_close; it indicates that GDB is
1491 exiting and should not get hung on an error (otherwise it is
1492 important to perform clean termination, even if it takes a
1494 extern void pop_all_targets (int quitting
);
1496 /* Like pop_all_targets, but pops only targets whose stratum is
1497 strictly above ABOVE_STRATUM. */
1498 extern void pop_all_targets_above (enum strata above_stratum
, int quitting
);
1500 extern int target_is_pushed (struct target_ops
*t
);
1502 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
1505 /* Struct target_section maps address ranges to file sections. It is
1506 mostly used with BFD files, but can be used without (e.g. for handling
1507 raw disks, or files not in formats handled by BFD). */
1509 struct target_section
1511 CORE_ADDR addr
; /* Lowest address in section */
1512 CORE_ADDR endaddr
; /* 1+highest address in section */
1514 struct bfd_section
*the_bfd_section
;
1516 bfd
*bfd
; /* BFD file pointer */
1519 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
1521 struct target_section_table
1523 struct target_section
*sections
;
1524 struct target_section
*sections_end
;
1527 /* Return the "section" containing the specified address. */
1528 struct target_section
*target_section_by_addr (struct target_ops
*target
,
1531 /* Return the target section table this target (or the targets
1532 beneath) currently manipulate. */
1534 extern struct target_section_table
*target_get_section_table
1535 (struct target_ops
*target
);
1537 /* From mem-break.c */
1539 extern int memory_remove_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1541 extern int memory_insert_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1543 extern int default_memory_remove_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1545 extern int default_memory_insert_breakpoint (struct gdbarch
*, struct bp_target_info
*);
1550 extern void initialize_targets (void);
1552 extern void noprocess (void) ATTRIBUTE_NORETURN
;
1554 extern void target_require_runnable (void);
1556 extern void find_default_attach (struct target_ops
*, char *, int);
1558 extern void find_default_create_inferior (struct target_ops
*,
1559 char *, char *, char **, int);
1561 extern struct target_ops
*find_run_target (void);
1563 extern struct target_ops
*find_target_beneath (struct target_ops
*);
1565 /* Read OS data object of type TYPE from the target, and return it in
1566 XML format. The result is NUL-terminated and returned as a string,
1567 allocated using xmalloc. If an error occurs or the transfer is
1568 unsupported, NULL is returned. Empty objects are returned as
1569 allocated but empty strings. */
1571 extern char *target_get_osdata (const char *type
);
1574 /* Stuff that should be shared among the various remote targets. */
1576 /* Debugging level. 0 is off, and non-zero values mean to print some debug
1577 information (higher values, more information). */
1578 extern int remote_debug
;
1580 /* Speed in bits per second, or -1 which means don't mess with the speed. */
1581 extern int baud_rate
;
1582 /* Timeout limit for response from target. */
1583 extern int remote_timeout
;
1586 /* Functions for helping to write a native target. */
1588 /* This is for native targets which use a unix/POSIX-style waitstatus. */
1589 extern void store_waitstatus (struct target_waitstatus
*, int);
1591 /* These are in common/signals.c, but they're only used by gdb. */
1592 extern enum target_signal
default_target_signal_from_host (struct gdbarch
*,
1594 extern int default_target_signal_to_host (struct gdbarch
*,
1595 enum target_signal
);
1597 /* Convert from a number used in a GDB command to an enum target_signal. */
1598 extern enum target_signal
target_signal_from_command (int);
1599 /* End of files in common/signals.c. */
1601 /* Set the show memory breakpoints mode to show, and installs a cleanup
1602 to restore it back to the current value. */
1603 extern struct cleanup
*make_show_memory_breakpoints_cleanup (int show
);
1605 extern int may_write_registers
;
1606 extern int may_write_memory
;
1607 extern int may_insert_breakpoints
;
1608 extern int may_insert_tracepoints
;
1609 extern int may_insert_fast_tracepoints
;
1610 extern int may_stop
;
1612 extern void update_target_permissions (void);
1615 /* Imported from machine dependent code */
1617 /* Blank target vector entries are initialized to target_ignore. */
1618 void target_ignore (void);
1620 extern struct target_ops deprecated_child_ops
;
1622 #endif /* !defined (TARGET_H) */