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