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1 | /* Interface between GDB and target environments, including files and processes | |
2 | ||
3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, | |
4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 | |
5 | Free Software Foundation, Inc. | |
6 | ||
7 | Contributed by Cygnus Support. Written by John Gilmore. | |
8 | ||
9 | This file is part of GDB. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 3 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
23 | ||
24 | #if !defined (TARGET_H) | |
25 | #define TARGET_H | |
26 | ||
27 | struct objfile; | |
28 | struct ui_file; | |
29 | struct mem_attrib; | |
30 | struct target_ops; | |
31 | struct bp_target_info; | |
32 | struct regcache; | |
33 | struct target_section_table; | |
34 | struct trace_state_variable; | |
35 | struct trace_status; | |
36 | struct uploaded_tsv; | |
37 | struct uploaded_tp; | |
38 | struct static_tracepoint_marker; | |
39 | ||
40 | struct expression; | |
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 "bfd.h" | |
62 | #include "symtab.h" | |
63 | #include "memattr.h" | |
64 | #include "vec.h" | |
65 | #include "gdb_signals.h" | |
66 | ||
67 | enum strata | |
68 | { | |
69 | dummy_stratum, /* The lowest of the low */ | |
70 | file_stratum, /* Executable files, etc */ | |
71 | process_stratum, /* Executing processes or core dump files */ | |
72 | thread_stratum, /* Executing threads */ | |
73 | record_stratum, /* Support record debugging */ | |
74 | arch_stratum /* Architecture overrides */ | |
75 | }; | |
76 | ||
77 | enum thread_control_capabilities | |
78 | { | |
79 | tc_none = 0, /* Default: can't control thread execution. */ | |
80 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
81 | }; | |
82 | ||
83 | /* Stuff for target_wait. */ | |
84 | ||
85 | /* Generally, what has the program done? */ | |
86 | enum target_waitkind | |
87 | { | |
88 | /* The program has exited. The exit status is in value.integer. */ | |
89 | TARGET_WAITKIND_EXITED, | |
90 | ||
91 | /* The program has stopped with a signal. Which signal is in | |
92 | value.sig. */ | |
93 | TARGET_WAITKIND_STOPPED, | |
94 | ||
95 | /* The program has terminated with a signal. Which signal is in | |
96 | value.sig. */ | |
97 | TARGET_WAITKIND_SIGNALLED, | |
98 | ||
99 | /* The program is letting us know that it dynamically loaded something | |
100 | (e.g. it called load(2) on AIX). */ | |
101 | TARGET_WAITKIND_LOADED, | |
102 | ||
103 | /* The program has forked. A "related" process' PTID is in | |
104 | value.related_pid. I.e., if the child forks, value.related_pid | |
105 | is the parent's ID. */ | |
106 | ||
107 | TARGET_WAITKIND_FORKED, | |
108 | ||
109 | /* The program has vforked. A "related" process's PTID is in | |
110 | value.related_pid. */ | |
111 | ||
112 | TARGET_WAITKIND_VFORKED, | |
113 | ||
114 | /* The program has exec'ed a new executable file. The new file's | |
115 | pathname is pointed to by value.execd_pathname. */ | |
116 | ||
117 | TARGET_WAITKIND_EXECD, | |
118 | ||
119 | /* The program had previously vforked, and now the child is done | |
120 | with the shared memory region, because it exec'ed or exited. | |
121 | Note that the event is reported to the vfork parent. This is | |
122 | only used if GDB did not stay attached to the vfork child, | |
123 | otherwise, a TARGET_WAITKIND_EXECD or | |
124 | TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child | |
125 | has the same effect. */ | |
126 | TARGET_WAITKIND_VFORK_DONE, | |
127 | ||
128 | /* The program has entered or returned from a system call. On | |
129 | HP-UX, this is used in the hardware watchpoint implementation. | |
130 | The syscall's unique integer ID number is in value.syscall_id. */ | |
131 | ||
132 | TARGET_WAITKIND_SYSCALL_ENTRY, | |
133 | TARGET_WAITKIND_SYSCALL_RETURN, | |
134 | ||
135 | /* Nothing happened, but we stopped anyway. This perhaps should be handled | |
136 | within target_wait, but I'm not sure target_wait should be resuming the | |
137 | inferior. */ | |
138 | TARGET_WAITKIND_SPURIOUS, | |
139 | ||
140 | /* An event has occured, but we should wait again. | |
141 | Remote_async_wait() returns this when there is an event | |
142 | on the inferior, but the rest of the world is not interested in | |
143 | it. The inferior has not stopped, but has just sent some output | |
144 | to the console, for instance. In this case, we want to go back | |
145 | to the event loop and wait there for another event from the | |
146 | inferior, rather than being stuck in the remote_async_wait() | |
147 | function. sThis way the event loop is responsive to other events, | |
148 | like for instance the user typing. */ | |
149 | TARGET_WAITKIND_IGNORE, | |
150 | ||
151 | /* The target has run out of history information, | |
152 | and cannot run backward any further. */ | |
153 | TARGET_WAITKIND_NO_HISTORY | |
154 | }; | |
155 | ||
156 | struct target_waitstatus | |
157 | { | |
158 | enum target_waitkind kind; | |
159 | ||
160 | /* Forked child pid, execd pathname, exit status, signal number or | |
161 | syscall number. */ | |
162 | union | |
163 | { | |
164 | int integer; | |
165 | enum target_signal sig; | |
166 | ptid_t related_pid; | |
167 | char *execd_pathname; | |
168 | int syscall_number; | |
169 | } | |
170 | value; | |
171 | }; | |
172 | ||
173 | /* Options that can be passed to target_wait. */ | |
174 | ||
175 | /* Return immediately if there's no event already queued. If this | |
176 | options is not requested, target_wait blocks waiting for an | |
177 | event. */ | |
178 | #define TARGET_WNOHANG 1 | |
179 | ||
180 | /* The structure below stores information about a system call. | |
181 | It is basically used in the "catch syscall" command, and in | |
182 | every function that gives information about a system call. | |
183 | ||
184 | It's also good to mention that its fields represent everything | |
185 | that we currently know about a syscall in GDB. */ | |
186 | struct syscall | |
187 | { | |
188 | /* The syscall number. */ | |
189 | int number; | |
190 | ||
191 | /* The syscall name. */ | |
192 | const char *name; | |
193 | }; | |
194 | ||
195 | /* Return a pretty printed form of target_waitstatus. | |
196 | Space for the result is malloc'd, caller must free. */ | |
197 | extern char *target_waitstatus_to_string (const struct target_waitstatus *); | |
198 | ||
199 | /* Possible types of events that the inferior handler will have to | |
200 | deal with. */ | |
201 | enum inferior_event_type | |
202 | { | |
203 | /* There is a request to quit the inferior, abandon it. */ | |
204 | INF_QUIT_REQ, | |
205 | /* Process a normal inferior event which will result in target_wait | |
206 | being called. */ | |
207 | INF_REG_EVENT, | |
208 | /* Deal with an error on the inferior. */ | |
209 | INF_ERROR, | |
210 | /* We are called because a timer went off. */ | |
211 | INF_TIMER, | |
212 | /* We are called to do stuff after the inferior stops. */ | |
213 | INF_EXEC_COMPLETE, | |
214 | /* We are called to do some stuff after the inferior stops, but we | |
215 | are expected to reenter the proceed() and | |
216 | handle_inferior_event() functions. This is used only in case of | |
217 | 'step n' like commands. */ | |
218 | INF_EXEC_CONTINUE | |
219 | }; | |
220 | \f | |
221 | /* Target objects which can be transfered using target_read, | |
222 | target_write, et cetera. */ | |
223 | ||
224 | enum target_object | |
225 | { | |
226 | /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */ | |
227 | TARGET_OBJECT_AVR, | |
228 | /* SPU target specific transfer. See "spu-tdep.c". */ | |
229 | TARGET_OBJECT_SPU, | |
230 | /* Transfer up-to LEN bytes of memory starting at OFFSET. */ | |
231 | TARGET_OBJECT_MEMORY, | |
232 | /* Memory, avoiding GDB's data cache and trusting the executable. | |
233 | Target implementations of to_xfer_partial never need to handle | |
234 | this object, and most callers should not use it. */ | |
235 | TARGET_OBJECT_RAW_MEMORY, | |
236 | /* Memory known to be part of the target's stack. This is cached even | |
237 | if it is not in a region marked as such, since it is known to be | |
238 | "normal" RAM. */ | |
239 | TARGET_OBJECT_STACK_MEMORY, | |
240 | /* Kernel Unwind Table. See "ia64-tdep.c". */ | |
241 | TARGET_OBJECT_UNWIND_TABLE, | |
242 | /* Transfer auxilliary vector. */ | |
243 | TARGET_OBJECT_AUXV, | |
244 | /* StackGhost cookie. See "sparc-tdep.c". */ | |
245 | TARGET_OBJECT_WCOOKIE, | |
246 | /* Target memory map in XML format. */ | |
247 | TARGET_OBJECT_MEMORY_MAP, | |
248 | /* Flash memory. This object can be used to write contents to | |
249 | a previously erased flash memory. Using it without erasing | |
250 | flash can have unexpected results. Addresses are physical | |
251 | address on target, and not relative to flash start. */ | |
252 | TARGET_OBJECT_FLASH, | |
253 | /* Available target-specific features, e.g. registers and coprocessors. | |
254 | See "target-descriptions.c". ANNEX should never be empty. */ | |
255 | TARGET_OBJECT_AVAILABLE_FEATURES, | |
256 | /* Currently loaded libraries, in XML format. */ | |
257 | TARGET_OBJECT_LIBRARIES, | |
258 | /* Get OS specific data. The ANNEX specifies the type (running | |
259 | processes, etc.). The data being transfered is expected to follow | |
260 | the DTD specified in features/osdata.dtd. */ | |
261 | TARGET_OBJECT_OSDATA, | |
262 | /* Extra signal info. Usually the contents of `siginfo_t' on unix | |
263 | platforms. */ | |
264 | TARGET_OBJECT_SIGNAL_INFO, | |
265 | /* The list of threads that are being debugged. */ | |
266 | TARGET_OBJECT_THREADS, | |
267 | /* Collected static trace data. */ | |
268 | TARGET_OBJECT_STATIC_TRACE_DATA, | |
269 | /* The HP-UX registers (those that can be obtained or modified by using | |
270 | the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */ | |
271 | TARGET_OBJECT_HPUX_UREGS, | |
272 | /* Possible future objects: TARGET_OBJECT_FILE, ... */ | |
273 | }; | |
274 | ||
275 | /* Enumeration of the kinds of traceframe searches that a target may | |
276 | be able to perform. */ | |
277 | ||
278 | enum trace_find_type | |
279 | { | |
280 | tfind_number, | |
281 | tfind_pc, | |
282 | tfind_tp, | |
283 | tfind_range, | |
284 | tfind_outside, | |
285 | }; | |
286 | ||
287 | typedef struct static_tracepoint_marker *static_tracepoint_marker_p; | |
288 | DEF_VEC_P(static_tracepoint_marker_p); | |
289 | ||
290 | /* Request that OPS transfer up to LEN 8-bit bytes of the target's | |
291 | OBJECT. The OFFSET, for a seekable object, specifies the | |
292 | starting point. The ANNEX can be used to provide additional | |
293 | data-specific information to the target. | |
294 | ||
295 | Return the number of bytes actually transfered, or -1 if the | |
296 | transfer is not supported or otherwise fails. Return of a positive | |
297 | value less than LEN indicates that no further transfer is possible. | |
298 | Unlike the raw to_xfer_partial interface, callers of these | |
299 | functions do not need to retry partial transfers. */ | |
300 | ||
301 | extern LONGEST target_read (struct target_ops *ops, | |
302 | enum target_object object, | |
303 | const char *annex, gdb_byte *buf, | |
304 | ULONGEST offset, LONGEST len); | |
305 | ||
306 | struct memory_read_result | |
307 | { | |
308 | /* First address that was read. */ | |
309 | ULONGEST begin; | |
310 | /* Past-the-end address. */ | |
311 | ULONGEST end; | |
312 | /* The data. */ | |
313 | gdb_byte *data; | |
314 | }; | |
315 | typedef struct memory_read_result memory_read_result_s; | |
316 | DEF_VEC_O(memory_read_result_s); | |
317 | ||
318 | extern void free_memory_read_result_vector (void *); | |
319 | ||
320 | extern VEC(memory_read_result_s)* read_memory_robust (struct target_ops *ops, | |
321 | ULONGEST offset, | |
322 | LONGEST len); | |
323 | ||
324 | extern LONGEST target_write (struct target_ops *ops, | |
325 | enum target_object object, | |
326 | const char *annex, const gdb_byte *buf, | |
327 | ULONGEST offset, LONGEST len); | |
328 | ||
329 | /* Similar to target_write, except that it also calls PROGRESS with | |
330 | the number of bytes written and the opaque BATON after every | |
331 | successful partial write (and before the first write). This is | |
332 | useful for progress reporting and user interaction while writing | |
333 | data. To abort the transfer, the progress callback can throw an | |
334 | exception. */ | |
335 | ||
336 | LONGEST target_write_with_progress (struct target_ops *ops, | |
337 | enum target_object object, | |
338 | const char *annex, const gdb_byte *buf, | |
339 | ULONGEST offset, LONGEST len, | |
340 | void (*progress) (ULONGEST, void *), | |
341 | void *baton); | |
342 | ||
343 | /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will | |
344 | be read using OPS. The return value will be -1 if the transfer | |
345 | fails or is not supported; 0 if the object is empty; or the length | |
346 | of the object otherwise. If a positive value is returned, a | |
347 | sufficiently large buffer will be allocated using xmalloc and | |
348 | returned in *BUF_P containing the contents of the object. | |
349 | ||
350 | This method should be used for objects sufficiently small to store | |
351 | in a single xmalloc'd buffer, when no fixed bound on the object's | |
352 | size is known in advance. Don't try to read TARGET_OBJECT_MEMORY | |
353 | through this function. */ | |
354 | ||
355 | extern LONGEST target_read_alloc (struct target_ops *ops, | |
356 | enum target_object object, | |
357 | const char *annex, gdb_byte **buf_p); | |
358 | ||
359 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
360 | returned as a string, allocated using xmalloc. If an error occurs | |
361 | or the transfer is unsupported, NULL is returned. Empty objects | |
362 | are returned as allocated but empty strings. A warning is issued | |
363 | if the result contains any embedded NUL bytes. */ | |
364 | ||
365 | extern char *target_read_stralloc (struct target_ops *ops, | |
366 | enum target_object object, | |
367 | const char *annex); | |
368 | ||
369 | /* Wrappers to target read/write that perform memory transfers. They | |
370 | throw an error if the memory transfer fails. | |
371 | ||
372 | NOTE: cagney/2003-10-23: The naming schema is lifted from | |
373 | "frame.h". The parameter order is lifted from get_frame_memory, | |
374 | which in turn lifted it from read_memory. */ | |
375 | ||
376 | extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr, | |
377 | gdb_byte *buf, LONGEST len); | |
378 | extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, | |
379 | CORE_ADDR addr, int len, | |
380 | enum bfd_endian byte_order); | |
381 | \f | |
382 | struct thread_info; /* fwd decl for parameter list below: */ | |
383 | ||
384 | struct target_ops | |
385 | { | |
386 | struct target_ops *beneath; /* To the target under this one. */ | |
387 | char *to_shortname; /* Name this target type */ | |
388 | char *to_longname; /* Name for printing */ | |
389 | char *to_doc; /* Documentation. Does not include trailing | |
390 | newline, and starts with a one-line descrip- | |
391 | tion (probably similar to to_longname). */ | |
392 | /* Per-target scratch pad. */ | |
393 | void *to_data; | |
394 | /* The open routine takes the rest of the parameters from the | |
395 | command, and (if successful) pushes a new target onto the | |
396 | stack. Targets should supply this routine, if only to provide | |
397 | an error message. */ | |
398 | void (*to_open) (char *, int); | |
399 | /* Old targets with a static target vector provide "to_close". | |
400 | New re-entrant targets provide "to_xclose" and that is expected | |
401 | to xfree everything (including the "struct target_ops"). */ | |
402 | void (*to_xclose) (struct target_ops *targ, int quitting); | |
403 | void (*to_close) (int); | |
404 | void (*to_attach) (struct target_ops *ops, char *, int); | |
405 | void (*to_post_attach) (int); | |
406 | void (*to_detach) (struct target_ops *ops, char *, int); | |
407 | void (*to_disconnect) (struct target_ops *, char *, int); | |
408 | void (*to_resume) (struct target_ops *, ptid_t, int, enum target_signal); | |
409 | ptid_t (*to_wait) (struct target_ops *, | |
410 | ptid_t, struct target_waitstatus *, int); | |
411 | void (*to_fetch_registers) (struct target_ops *, struct regcache *, int); | |
412 | void (*to_store_registers) (struct target_ops *, struct regcache *, int); | |
413 | void (*to_prepare_to_store) (struct regcache *); | |
414 | ||
415 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
416 | target address MEMADDR. If WRITE, transfer them to the target, else | |
417 | transfer them from the target. TARGET is the target from which we | |
418 | get this function. | |
419 | ||
420 | Return value, N, is one of the following: | |
421 | ||
422 | 0 means that we can't handle this. If errno has been set, it is the | |
423 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
424 | ||
425 | positive (call it N) means that we have transferred N bytes | |
426 | starting at MEMADDR. We might be able to handle more bytes | |
427 | beyond this length, but no promises. | |
428 | ||
429 | negative (call its absolute value N) means that we cannot | |
430 | transfer right at MEMADDR, but we could transfer at least | |
431 | something at MEMADDR + N. | |
432 | ||
433 | NOTE: cagney/2004-10-01: This has been entirely superseeded by | |
434 | to_xfer_partial and inferior inheritance. */ | |
435 | ||
436 | int (*deprecated_xfer_memory) (CORE_ADDR memaddr, gdb_byte *myaddr, | |
437 | int len, int write, | |
438 | struct mem_attrib *attrib, | |
439 | struct target_ops *target); | |
440 | ||
441 | void (*to_files_info) (struct target_ops *); | |
442 | int (*to_insert_breakpoint) (struct gdbarch *, struct bp_target_info *); | |
443 | int (*to_remove_breakpoint) (struct gdbarch *, struct bp_target_info *); | |
444 | int (*to_can_use_hw_breakpoint) (int, int, int); | |
445 | int (*to_insert_hw_breakpoint) (struct gdbarch *, struct bp_target_info *); | |
446 | int (*to_remove_hw_breakpoint) (struct gdbarch *, struct bp_target_info *); | |
447 | ||
448 | /* Documentation of what the two routines below are expected to do is | |
449 | provided with the corresponding target_* macros. */ | |
450 | int (*to_remove_watchpoint) (CORE_ADDR, int, int, struct expression *); | |
451 | int (*to_insert_watchpoint) (CORE_ADDR, int, int, struct expression *); | |
452 | ||
453 | int (*to_stopped_by_watchpoint) (void); | |
454 | int to_have_steppable_watchpoint; | |
455 | int to_have_continuable_watchpoint; | |
456 | int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *); | |
457 | int (*to_watchpoint_addr_within_range) (struct target_ops *, | |
458 | CORE_ADDR, CORE_ADDR, int); | |
459 | ||
460 | /* Documentation of this routine is provided with the corresponding | |
461 | target_* macro. */ | |
462 | int (*to_region_ok_for_hw_watchpoint) (CORE_ADDR, int); | |
463 | ||
464 | int (*to_can_accel_watchpoint_condition) (CORE_ADDR, int, int, | |
465 | struct expression *); | |
466 | void (*to_terminal_init) (void); | |
467 | void (*to_terminal_inferior) (void); | |
468 | void (*to_terminal_ours_for_output) (void); | |
469 | void (*to_terminal_ours) (void); | |
470 | void (*to_terminal_save_ours) (void); | |
471 | void (*to_terminal_info) (char *, int); | |
472 | void (*to_kill) (struct target_ops *); | |
473 | void (*to_load) (char *, int); | |
474 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
475 | void (*to_create_inferior) (struct target_ops *, | |
476 | char *, char *, char **, int); | |
477 | void (*to_post_startup_inferior) (ptid_t); | |
478 | int (*to_insert_fork_catchpoint) (int); | |
479 | int (*to_remove_fork_catchpoint) (int); | |
480 | int (*to_insert_vfork_catchpoint) (int); | |
481 | int (*to_remove_vfork_catchpoint) (int); | |
482 | int (*to_follow_fork) (struct target_ops *, int); | |
483 | int (*to_insert_exec_catchpoint) (int); | |
484 | int (*to_remove_exec_catchpoint) (int); | |
485 | int (*to_set_syscall_catchpoint) (int, int, int, int, int *); | |
486 | int (*to_has_exited) (int, int, int *); | |
487 | void (*to_mourn_inferior) (struct target_ops *); | |
488 | int (*to_can_run) (void); | |
489 | void (*to_notice_signals) (ptid_t ptid); | |
490 | int (*to_thread_alive) (struct target_ops *, ptid_t ptid); | |
491 | void (*to_find_new_threads) (struct target_ops *); | |
492 | char *(*to_pid_to_str) (struct target_ops *, ptid_t); | |
493 | char *(*to_extra_thread_info) (struct thread_info *); | |
494 | void (*to_stop) (ptid_t); | |
495 | void (*to_rcmd) (char *command, struct ui_file *output); | |
496 | char *(*to_pid_to_exec_file) (int pid); | |
497 | void (*to_log_command) (const char *); | |
498 | struct target_section_table *(*to_get_section_table) (struct target_ops *); | |
499 | enum strata to_stratum; | |
500 | int (*to_has_all_memory) (struct target_ops *); | |
501 | int (*to_has_memory) (struct target_ops *); | |
502 | int (*to_has_stack) (struct target_ops *); | |
503 | int (*to_has_registers) (struct target_ops *); | |
504 | int (*to_has_execution) (struct target_ops *); | |
505 | int to_has_thread_control; /* control thread execution */ | |
506 | int to_attach_no_wait; | |
507 | /* ASYNC target controls */ | |
508 | int (*to_can_async_p) (void); | |
509 | int (*to_is_async_p) (void); | |
510 | void (*to_async) (void (*) (enum inferior_event_type, void *), void *); | |
511 | int (*to_async_mask) (int); | |
512 | int (*to_supports_non_stop) (void); | |
513 | /* find_memory_regions support method for gcore */ | |
514 | int (*to_find_memory_regions) (find_memory_region_ftype func, void *data); | |
515 | /* make_corefile_notes support method for gcore */ | |
516 | char * (*to_make_corefile_notes) (bfd *, int *); | |
517 | /* get_bookmark support method for bookmarks */ | |
518 | gdb_byte * (*to_get_bookmark) (char *, int); | |
519 | /* goto_bookmark support method for bookmarks */ | |
520 | void (*to_goto_bookmark) (gdb_byte *, int); | |
521 | /* Return the thread-local address at OFFSET in the | |
522 | thread-local storage for the thread PTID and the shared library | |
523 | or executable file given by OBJFILE. If that block of | |
524 | thread-local storage hasn't been allocated yet, this function | |
525 | may return an error. */ | |
526 | CORE_ADDR (*to_get_thread_local_address) (struct target_ops *ops, | |
527 | ptid_t ptid, | |
528 | CORE_ADDR load_module_addr, | |
529 | CORE_ADDR offset); | |
530 | ||
531 | /* Request that OPS transfer up to LEN 8-bit bytes of the target's | |
532 | OBJECT. The OFFSET, for a seekable object, specifies the | |
533 | starting point. The ANNEX can be used to provide additional | |
534 | data-specific information to the target. | |
535 | ||
536 | Return the number of bytes actually transfered, zero when no | |
537 | further transfer is possible, and -1 when the transfer is not | |
538 | supported. Return of a positive value smaller than LEN does | |
539 | not indicate the end of the object, only the end of the | |
540 | transfer; higher level code should continue transferring if | |
541 | desired. This is handled in target.c. | |
542 | ||
543 | The interface does not support a "retry" mechanism. Instead it | |
544 | assumes that at least one byte will be transfered on each | |
545 | successful call. | |
546 | ||
547 | NOTE: cagney/2003-10-17: The current interface can lead to | |
548 | fragmented transfers. Lower target levels should not implement | |
549 | hacks, such as enlarging the transfer, in an attempt to | |
550 | compensate for this. Instead, the target stack should be | |
551 | extended so that it implements supply/collect methods and a | |
552 | look-aside object cache. With that available, the lowest | |
553 | target can safely and freely "push" data up the stack. | |
554 | ||
555 | See target_read and target_write for more information. One, | |
556 | and only one, of readbuf or writebuf must be non-NULL. */ | |
557 | ||
558 | LONGEST (*to_xfer_partial) (struct target_ops *ops, | |
559 | enum target_object object, const char *annex, | |
560 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
561 | ULONGEST offset, LONGEST len); | |
562 | ||
563 | /* Returns the memory map for the target. A return value of NULL | |
564 | means that no memory map is available. If a memory address | |
565 | does not fall within any returned regions, it's assumed to be | |
566 | RAM. The returned memory regions should not overlap. | |
567 | ||
568 | The order of regions does not matter; target_memory_map will | |
569 | sort regions by starting address. For that reason, this | |
570 | function should not be called directly except via | |
571 | target_memory_map. | |
572 | ||
573 | This method should not cache data; if the memory map could | |
574 | change unexpectedly, it should be invalidated, and higher | |
575 | layers will re-fetch it. */ | |
576 | VEC(mem_region_s) *(*to_memory_map) (struct target_ops *); | |
577 | ||
578 | /* Erases the region of flash memory starting at ADDRESS, of | |
579 | length LENGTH. | |
580 | ||
581 | Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned | |
582 | on flash block boundaries, as reported by 'to_memory_map'. */ | |
583 | void (*to_flash_erase) (struct target_ops *, | |
584 | ULONGEST address, LONGEST length); | |
585 | ||
586 | /* Finishes a flash memory write sequence. After this operation | |
587 | all flash memory should be available for writing and the result | |
588 | of reading from areas written by 'to_flash_write' should be | |
589 | equal to what was written. */ | |
590 | void (*to_flash_done) (struct target_ops *); | |
591 | ||
592 | /* Describe the architecture-specific features of this target. | |
593 | Returns the description found, or NULL if no description | |
594 | was available. */ | |
595 | const struct target_desc *(*to_read_description) (struct target_ops *ops); | |
596 | ||
597 | /* Build the PTID of the thread on which a given task is running, | |
598 | based on LWP and THREAD. These values are extracted from the | |
599 | task Private_Data section of the Ada Task Control Block, and | |
600 | their interpretation depends on the target. */ | |
601 | ptid_t (*to_get_ada_task_ptid) (long lwp, long thread); | |
602 | ||
603 | /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR. | |
604 | Return 0 if *READPTR is already at the end of the buffer. | |
605 | Return -1 if there is insufficient buffer for a whole entry. | |
606 | Return 1 if an entry was read into *TYPEP and *VALP. */ | |
607 | int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr, | |
608 | gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp); | |
609 | ||
610 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
611 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
612 | ||
613 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
614 | requiring halting of the search (e.g. memory read error). | |
615 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
616 | int (*to_search_memory) (struct target_ops *ops, | |
617 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
618 | const gdb_byte *pattern, ULONGEST pattern_len, | |
619 | CORE_ADDR *found_addrp); | |
620 | ||
621 | /* Can target execute in reverse? */ | |
622 | int (*to_can_execute_reverse) (void); | |
623 | ||
624 | /* Does this target support debugging multiple processes | |
625 | simultaneously? */ | |
626 | int (*to_supports_multi_process) (void); | |
627 | ||
628 | /* Determine current architecture of thread PTID. | |
629 | ||
630 | The target is supposed to determine the architecture of the code where | |
631 | the target is currently stopped at (on Cell, if a target is in spu_run, | |
632 | to_thread_architecture would return SPU, otherwise PPC32 or PPC64). | |
633 | This is architecture used to perform decr_pc_after_break adjustment, | |
634 | and also determines the frame architecture of the innermost frame. | |
635 | ptrace operations need to operate according to target_gdbarch. | |
636 | ||
637 | The default implementation always returns target_gdbarch. */ | |
638 | struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t); | |
639 | ||
640 | /* Determine current address space of thread PTID. | |
641 | ||
642 | The default implementation always returns the inferior's | |
643 | address space. */ | |
644 | struct address_space *(*to_thread_address_space) (struct target_ops *, | |
645 | ptid_t); | |
646 | ||
647 | /* Tracepoint-related operations. */ | |
648 | ||
649 | /* Prepare the target for a tracing run. */ | |
650 | void (*to_trace_init) (void); | |
651 | ||
652 | /* Send full details of a tracepoint to the target. */ | |
653 | void (*to_download_tracepoint) (struct breakpoint *t); | |
654 | ||
655 | /* Send full details of a trace state variable to the target. */ | |
656 | void (*to_download_trace_state_variable) (struct trace_state_variable *tsv); | |
657 | ||
658 | /* Inform the target info of memory regions that are readonly | |
659 | (such as text sections), and so it should return data from | |
660 | those rather than look in the trace buffer. */ | |
661 | void (*to_trace_set_readonly_regions) (void); | |
662 | ||
663 | /* Start a trace run. */ | |
664 | void (*to_trace_start) (void); | |
665 | ||
666 | /* Get the current status of a tracing run. */ | |
667 | int (*to_get_trace_status) (struct trace_status *ts); | |
668 | ||
669 | /* Stop a trace run. */ | |
670 | void (*to_trace_stop) (void); | |
671 | ||
672 | /* Ask the target to find a trace frame of the given type TYPE, | |
673 | using NUM, ADDR1, and ADDR2 as search parameters. Returns the | |
674 | number of the trace frame, and also the tracepoint number at | |
675 | TPP. If no trace frame matches, return -1. May throw if the | |
676 | operation fails. */ | |
677 | int (*to_trace_find) (enum trace_find_type type, int num, | |
678 | ULONGEST addr1, ULONGEST addr2, int *tpp); | |
679 | ||
680 | /* Get the value of the trace state variable number TSV, returning | |
681 | 1 if the value is known and writing the value itself into the | |
682 | location pointed to by VAL, else returning 0. */ | |
683 | int (*to_get_trace_state_variable_value) (int tsv, LONGEST *val); | |
684 | ||
685 | int (*to_save_trace_data) (const char *filename); | |
686 | ||
687 | int (*to_upload_tracepoints) (struct uploaded_tp **utpp); | |
688 | ||
689 | int (*to_upload_trace_state_variables) (struct uploaded_tsv **utsvp); | |
690 | ||
691 | LONGEST (*to_get_raw_trace_data) (gdb_byte *buf, | |
692 | ULONGEST offset, LONGEST len); | |
693 | ||
694 | /* Set the target's tracing behavior in response to unexpected | |
695 | disconnection - set VAL to 1 to keep tracing, 0 to stop. */ | |
696 | void (*to_set_disconnected_tracing) (int val); | |
697 | void (*to_set_circular_trace_buffer) (int val); | |
698 | ||
699 | /* Return the processor core that thread PTID was last seen on. | |
700 | This information is updated only when: | |
701 | - update_thread_list is called | |
702 | - thread stops | |
703 | If the core cannot be determined -- either for the specified | |
704 | thread, or right now, or in this debug session, or for this | |
705 | target -- return -1. */ | |
706 | int (*to_core_of_thread) (struct target_ops *, ptid_t ptid); | |
707 | ||
708 | /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range | |
709 | matches the contents of [DATA,DATA+SIZE). Returns 1 if there's | |
710 | a match, 0 if there's a mismatch, and -1 if an error is | |
711 | encountered while reading memory. */ | |
712 | int (*to_verify_memory) (struct target_ops *, const gdb_byte *data, | |
713 | CORE_ADDR memaddr, ULONGEST size); | |
714 | ||
715 | /* Return the address of the start of the Thread Information Block | |
716 | a Windows OS specific feature. */ | |
717 | int (*to_get_tib_address) (ptid_t ptid, CORE_ADDR *addr); | |
718 | ||
719 | /* Send the new settings of write permission variables. */ | |
720 | void (*to_set_permissions) (void); | |
721 | ||
722 | /* Look for a static tracepoint marker at ADDR, and fill in MARKER | |
723 | with its details. Return 1 on success, 0 on failure. */ | |
724 | int (*to_static_tracepoint_marker_at) (CORE_ADDR, | |
725 | struct static_tracepoint_marker *marker); | |
726 | ||
727 | /* Return a vector of all tracepoints markers string id ID, or all | |
728 | markers if ID is NULL. */ | |
729 | VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) | |
730 | (const char *id); | |
731 | ||
732 | int to_magic; | |
733 | /* Need sub-structure for target machine related rather than comm related? | |
734 | */ | |
735 | }; | |
736 | ||
737 | /* Magic number for checking ops size. If a struct doesn't end with this | |
738 | number, somebody changed the declaration but didn't change all the | |
739 | places that initialize one. */ | |
740 | ||
741 | #define OPS_MAGIC 3840 | |
742 | ||
743 | /* The ops structure for our "current" target process. This should | |
744 | never be NULL. If there is no target, it points to the dummy_target. */ | |
745 | ||
746 | extern struct target_ops current_target; | |
747 | ||
748 | /* Define easy words for doing these operations on our current target. */ | |
749 | ||
750 | #define target_shortname (current_target.to_shortname) | |
751 | #define target_longname (current_target.to_longname) | |
752 | ||
753 | /* Does whatever cleanup is required for a target that we are no | |
754 | longer going to be calling. QUITTING indicates that GDB is exiting | |
755 | and should not get hung on an error (otherwise it is important to | |
756 | perform clean termination, even if it takes a while). This routine | |
757 | is automatically always called when popping the target off the | |
758 | target stack (to_beneath is undefined). Closing file descriptors | |
759 | and freeing all memory allocated memory are typical things it | |
760 | should do. */ | |
761 | ||
762 | void target_close (struct target_ops *targ, int quitting); | |
763 | ||
764 | /* Attaches to a process on the target side. Arguments are as passed | |
765 | to the `attach' command by the user. This routine can be called | |
766 | when the target is not on the target-stack, if the target_can_run | |
767 | routine returns 1; in that case, it must push itself onto the stack. | |
768 | Upon exit, the target should be ready for normal operations, and | |
769 | should be ready to deliver the status of the process immediately | |
770 | (without waiting) to an upcoming target_wait call. */ | |
771 | ||
772 | void target_attach (char *, int); | |
773 | ||
774 | /* Some targets don't generate traps when attaching to the inferior, | |
775 | or their target_attach implementation takes care of the waiting. | |
776 | These targets must set to_attach_no_wait. */ | |
777 | ||
778 | #define target_attach_no_wait \ | |
779 | (current_target.to_attach_no_wait) | |
780 | ||
781 | /* The target_attach operation places a process under debugger control, | |
782 | and stops the process. | |
783 | ||
784 | This operation provides a target-specific hook that allows the | |
785 | necessary bookkeeping to be performed after an attach completes. */ | |
786 | #define target_post_attach(pid) \ | |
787 | (*current_target.to_post_attach) (pid) | |
788 | ||
789 | /* Takes a program previously attached to and detaches it. | |
790 | The program may resume execution (some targets do, some don't) and will | |
791 | no longer stop on signals, etc. We better not have left any breakpoints | |
792 | in the program or it'll die when it hits one. ARGS is arguments | |
793 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
794 | says whether to be verbose or not. */ | |
795 | ||
796 | extern void target_detach (char *, int); | |
797 | ||
798 | /* Disconnect from the current target without resuming it (leaving it | |
799 | waiting for a debugger). */ | |
800 | ||
801 | extern void target_disconnect (char *, int); | |
802 | ||
803 | /* Resume execution of the target process PTID. STEP says whether to | |
804 | single-step or to run free; SIGGNAL is the signal to be given to | |
805 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
806 | pass TARGET_SIGNAL_DEFAULT. */ | |
807 | ||
808 | extern void target_resume (ptid_t ptid, int step, enum target_signal signal); | |
809 | ||
810 | /* Wait for process pid to do something. PTID = -1 to wait for any | |
811 | pid to do something. Return pid of child, or -1 in case of error; | |
812 | store status through argument pointer STATUS. Note that it is | |
813 | _NOT_ OK to throw_exception() out of target_wait() without popping | |
814 | the debugging target from the stack; GDB isn't prepared to get back | |
815 | to the prompt with a debugging target but without the frame cache, | |
816 | stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W* | |
817 | options. */ | |
818 | ||
819 | extern ptid_t target_wait (ptid_t ptid, struct target_waitstatus *status, | |
820 | int options); | |
821 | ||
822 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ | |
823 | ||
824 | extern void target_fetch_registers (struct regcache *regcache, int regno); | |
825 | ||
826 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
827 | It can store as many registers as it wants to, so target_prepare_to_store | |
828 | must have been previously called. Calls error() if there are problems. */ | |
829 | ||
830 | extern void target_store_registers (struct regcache *regcache, int regs); | |
831 | ||
832 | /* Get ready to modify the registers array. On machines which store | |
833 | individual registers, this doesn't need to do anything. On machines | |
834 | which store all the registers in one fell swoop, this makes sure | |
835 | that REGISTERS contains all the registers from the program being | |
836 | debugged. */ | |
837 | ||
838 | #define target_prepare_to_store(regcache) \ | |
839 | (*current_target.to_prepare_to_store) (regcache) | |
840 | ||
841 | /* Determine current address space of thread PTID. */ | |
842 | ||
843 | struct address_space *target_thread_address_space (ptid_t); | |
844 | ||
845 | /* Returns true if this target can debug multiple processes | |
846 | simultaneously. */ | |
847 | ||
848 | #define target_supports_multi_process() \ | |
849 | (*current_target.to_supports_multi_process) () | |
850 | ||
851 | /* Invalidate all target dcaches. */ | |
852 | extern void target_dcache_invalidate (void); | |
853 | ||
854 | extern int target_read_string (CORE_ADDR, char **, int, int *); | |
855 | ||
856 | extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len); | |
857 | ||
858 | extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len); | |
859 | ||
860 | extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
861 | int len); | |
862 | ||
863 | /* Fetches the target's memory map. If one is found it is sorted | |
864 | and returned, after some consistency checking. Otherwise, NULL | |
865 | is returned. */ | |
866 | VEC(mem_region_s) *target_memory_map (void); | |
867 | ||
868 | /* Erase the specified flash region. */ | |
869 | void target_flash_erase (ULONGEST address, LONGEST length); | |
870 | ||
871 | /* Finish a sequence of flash operations. */ | |
872 | void target_flash_done (void); | |
873 | ||
874 | /* Describes a request for a memory write operation. */ | |
875 | struct memory_write_request | |
876 | { | |
877 | /* Begining address that must be written. */ | |
878 | ULONGEST begin; | |
879 | /* Past-the-end address. */ | |
880 | ULONGEST end; | |
881 | /* The data to write. */ | |
882 | gdb_byte *data; | |
883 | /* A callback baton for progress reporting for this request. */ | |
884 | void *baton; | |
885 | }; | |
886 | typedef struct memory_write_request memory_write_request_s; | |
887 | DEF_VEC_O(memory_write_request_s); | |
888 | ||
889 | /* Enumeration specifying different flash preservation behaviour. */ | |
890 | enum flash_preserve_mode | |
891 | { | |
892 | flash_preserve, | |
893 | flash_discard | |
894 | }; | |
895 | ||
896 | /* Write several memory blocks at once. This version can be more | |
897 | efficient than making several calls to target_write_memory, in | |
898 | particular because it can optimize accesses to flash memory. | |
899 | ||
900 | Moreover, this is currently the only memory access function in gdb | |
901 | that supports writing to flash memory, and it should be used for | |
902 | all cases where access to flash memory is desirable. | |
903 | ||
904 | REQUESTS is the vector (see vec.h) of memory_write_request. | |
905 | PRESERVE_FLASH_P indicates what to do with blocks which must be | |
906 | erased, but not completely rewritten. | |
907 | PROGRESS_CB is a function that will be periodically called to provide | |
908 | feedback to user. It will be called with the baton corresponding | |
909 | to the request currently being written. It may also be called | |
910 | with a NULL baton, when preserved flash sectors are being rewritten. | |
911 | ||
912 | The function returns 0 on success, and error otherwise. */ | |
913 | int target_write_memory_blocks (VEC(memory_write_request_s) *requests, | |
914 | enum flash_preserve_mode preserve_flash_p, | |
915 | void (*progress_cb) (ULONGEST, void *)); | |
916 | ||
917 | /* From infrun.c. */ | |
918 | ||
919 | extern int inferior_has_forked (ptid_t pid, ptid_t *child_pid); | |
920 | ||
921 | extern int inferior_has_vforked (ptid_t pid, ptid_t *child_pid); | |
922 | ||
923 | extern int inferior_has_execd (ptid_t pid, char **execd_pathname); | |
924 | ||
925 | extern int inferior_has_called_syscall (ptid_t pid, int *syscall_number); | |
926 | ||
927 | /* Print a line about the current target. */ | |
928 | ||
929 | #define target_files_info() \ | |
930 | (*current_target.to_files_info) (¤t_target) | |
931 | ||
932 | /* Insert a breakpoint at address BP_TGT->placed_address in the target | |
933 | machine. Result is 0 for success, or an errno value. */ | |
934 | ||
935 | extern int target_insert_breakpoint (struct gdbarch *gdbarch, | |
936 | struct bp_target_info *bp_tgt); | |
937 | ||
938 | /* Remove a breakpoint at address BP_TGT->placed_address in the target | |
939 | machine. Result is 0 for success, or an errno value. */ | |
940 | ||
941 | extern int target_remove_breakpoint (struct gdbarch *gdbarch, | |
942 | struct bp_target_info *bp_tgt); | |
943 | ||
944 | /* Initialize the terminal settings we record for the inferior, | |
945 | before we actually run the inferior. */ | |
946 | ||
947 | #define target_terminal_init() \ | |
948 | (*current_target.to_terminal_init) () | |
949 | ||
950 | /* Put the inferior's terminal settings into effect. | |
951 | This is preparation for starting or resuming the inferior. */ | |
952 | ||
953 | extern void target_terminal_inferior (void); | |
954 | ||
955 | /* Put some of our terminal settings into effect, | |
956 | enough to get proper results from our output, | |
957 | but do not change into or out of RAW mode | |
958 | so that no input is discarded. | |
959 | ||
960 | After doing this, either terminal_ours or terminal_inferior | |
961 | should be called to get back to a normal state of affairs. */ | |
962 | ||
963 | #define target_terminal_ours_for_output() \ | |
964 | (*current_target.to_terminal_ours_for_output) () | |
965 | ||
966 | /* Put our terminal settings into effect. | |
967 | First record the inferior's terminal settings | |
968 | so they can be restored properly later. */ | |
969 | ||
970 | #define target_terminal_ours() \ | |
971 | (*current_target.to_terminal_ours) () | |
972 | ||
973 | /* Save our terminal settings. | |
974 | This is called from TUI after entering or leaving the curses | |
975 | mode. Since curses modifies our terminal this call is here | |
976 | to take this change into account. */ | |
977 | ||
978 | #define target_terminal_save_ours() \ | |
979 | (*current_target.to_terminal_save_ours) () | |
980 | ||
981 | /* Print useful information about our terminal status, if such a thing | |
982 | exists. */ | |
983 | ||
984 | #define target_terminal_info(arg, from_tty) \ | |
985 | (*current_target.to_terminal_info) (arg, from_tty) | |
986 | ||
987 | /* Kill the inferior process. Make it go away. */ | |
988 | ||
989 | extern void target_kill (void); | |
990 | ||
991 | /* Load an executable file into the target process. This is expected | |
992 | to not only bring new code into the target process, but also to | |
993 | update GDB's symbol tables to match. | |
994 | ||
995 | ARG contains command-line arguments, to be broken down with | |
996 | buildargv (). The first non-switch argument is the filename to | |
997 | load, FILE; the second is a number (as parsed by strtoul (..., ..., | |
998 | 0)), which is an offset to apply to the load addresses of FILE's | |
999 | sections. The target may define switches, or other non-switch | |
1000 | arguments, as it pleases. */ | |
1001 | ||
1002 | extern void target_load (char *arg, int from_tty); | |
1003 | ||
1004 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
1005 | name. ADDRP is a CORE_ADDR * pointing to where the value of the | |
1006 | symbol should be returned. The result is 0 if successful, nonzero | |
1007 | if the symbol does not exist in the target environment. This | |
1008 | function should not call error() if communication with the target | |
1009 | is interrupted, since it is called from symbol reading, but should | |
1010 | return nonzero, possibly doing a complain(). */ | |
1011 | ||
1012 | #define target_lookup_symbol(name, addrp) \ | |
1013 | (*current_target.to_lookup_symbol) (name, addrp) | |
1014 | ||
1015 | /* Start an inferior process and set inferior_ptid to its pid. | |
1016 | EXEC_FILE is the file to run. | |
1017 | ALLARGS is a string containing the arguments to the program. | |
1018 | ENV is the environment vector to pass. Errors reported with error(). | |
1019 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
1020 | ||
1021 | void target_create_inferior (char *exec_file, char *args, | |
1022 | char **env, int from_tty); | |
1023 | ||
1024 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
1025 | notification of inferior events such as fork and vork immediately | |
1026 | after the inferior is created. (This because of how gdb gets an | |
1027 | inferior created via invoking a shell to do it. In such a scenario, | |
1028 | if the shell init file has commands in it, the shell will fork and | |
1029 | exec for each of those commands, and we will see each such fork | |
1030 | event. Very bad.) | |
1031 | ||
1032 | Such targets will supply an appropriate definition for this function. */ | |
1033 | ||
1034 | #define target_post_startup_inferior(ptid) \ | |
1035 | (*current_target.to_post_startup_inferior) (ptid) | |
1036 | ||
1037 | /* On some targets, we can catch an inferior fork or vfork event when | |
1038 | it occurs. These functions insert/remove an already-created | |
1039 | catchpoint for such events. They return 0 for success, 1 if the | |
1040 | catchpoint type is not supported and -1 for failure. */ | |
1041 | ||
1042 | #define target_insert_fork_catchpoint(pid) \ | |
1043 | (*current_target.to_insert_fork_catchpoint) (pid) | |
1044 | ||
1045 | #define target_remove_fork_catchpoint(pid) \ | |
1046 | (*current_target.to_remove_fork_catchpoint) (pid) | |
1047 | ||
1048 | #define target_insert_vfork_catchpoint(pid) \ | |
1049 | (*current_target.to_insert_vfork_catchpoint) (pid) | |
1050 | ||
1051 | #define target_remove_vfork_catchpoint(pid) \ | |
1052 | (*current_target.to_remove_vfork_catchpoint) (pid) | |
1053 | ||
1054 | /* If the inferior forks or vforks, this function will be called at | |
1055 | the next resume in order to perform any bookkeeping and fiddling | |
1056 | necessary to continue debugging either the parent or child, as | |
1057 | requested, and releasing the other. Information about the fork | |
1058 | or vfork event is available via get_last_target_status (). | |
1059 | This function returns 1 if the inferior should not be resumed | |
1060 | (i.e. there is another event pending). */ | |
1061 | ||
1062 | int target_follow_fork (int follow_child); | |
1063 | ||
1064 | /* On some targets, we can catch an inferior exec event when it | |
1065 | occurs. These functions insert/remove an already-created | |
1066 | catchpoint for such events. They return 0 for success, 1 if the | |
1067 | catchpoint type is not supported and -1 for failure. */ | |
1068 | ||
1069 | #define target_insert_exec_catchpoint(pid) \ | |
1070 | (*current_target.to_insert_exec_catchpoint) (pid) | |
1071 | ||
1072 | #define target_remove_exec_catchpoint(pid) \ | |
1073 | (*current_target.to_remove_exec_catchpoint) (pid) | |
1074 | ||
1075 | /* Syscall catch. | |
1076 | ||
1077 | NEEDED is nonzero if any syscall catch (of any kind) is requested. | |
1078 | If NEEDED is zero, it means the target can disable the mechanism to | |
1079 | catch system calls because there are no more catchpoints of this type. | |
1080 | ||
1081 | ANY_COUNT is nonzero if a generic (filter-less) syscall catch is | |
1082 | being requested. In this case, both TABLE_SIZE and TABLE should | |
1083 | be ignored. | |
1084 | ||
1085 | TABLE_SIZE is the number of elements in TABLE. It only matters if | |
1086 | ANY_COUNT is zero. | |
1087 | ||
1088 | TABLE is an array of ints, indexed by syscall number. An element in | |
1089 | this array is nonzero if that syscall should be caught. This argument | |
1090 | only matters if ANY_COUNT is zero. | |
1091 | ||
1092 | Return 0 for success, 1 if syscall catchpoints are not supported or -1 | |
1093 | for failure. */ | |
1094 | ||
1095 | #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \ | |
1096 | (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \ | |
1097 | table_size, table) | |
1098 | ||
1099 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the | |
1100 | exit code of PID, if any. */ | |
1101 | ||
1102 | #define target_has_exited(pid,wait_status,exit_status) \ | |
1103 | (*current_target.to_has_exited) (pid,wait_status,exit_status) | |
1104 | ||
1105 | /* The debugger has completed a blocking wait() call. There is now | |
1106 | some process event that must be processed. This function should | |
1107 | be defined by those targets that require the debugger to perform | |
1108 | cleanup or internal state changes in response to the process event. */ | |
1109 | ||
1110 | /* The inferior process has died. Do what is right. */ | |
1111 | ||
1112 | void target_mourn_inferior (void); | |
1113 | ||
1114 | /* Does target have enough data to do a run or attach command? */ | |
1115 | ||
1116 | #define target_can_run(t) \ | |
1117 | ((t)->to_can_run) () | |
1118 | ||
1119 | /* post process changes to signal handling in the inferior. */ | |
1120 | ||
1121 | #define target_notice_signals(ptid) \ | |
1122 | (*current_target.to_notice_signals) (ptid) | |
1123 | ||
1124 | /* Check to see if a thread is still alive. */ | |
1125 | ||
1126 | extern int target_thread_alive (ptid_t ptid); | |
1127 | ||
1128 | /* Query for new threads and add them to the thread list. */ | |
1129 | ||
1130 | extern void target_find_new_threads (void); | |
1131 | ||
1132 | /* Make target stop in a continuable fashion. (For instance, under | |
1133 | Unix, this should act like SIGSTOP). This function is normally | |
1134 | used by GUIs to implement a stop button. */ | |
1135 | ||
1136 | extern void target_stop (ptid_t ptid); | |
1137 | ||
1138 | /* Send the specified COMMAND to the target's monitor | |
1139 | (shell,interpreter) for execution. The result of the query is | |
1140 | placed in OUTBUF. */ | |
1141 | ||
1142 | #define target_rcmd(command, outbuf) \ | |
1143 | (*current_target.to_rcmd) (command, outbuf) | |
1144 | ||
1145 | ||
1146 | /* Does the target include all of memory, or only part of it? This | |
1147 | determines whether we look up the target chain for other parts of | |
1148 | memory if this target can't satisfy a request. */ | |
1149 | ||
1150 | extern int target_has_all_memory_1 (void); | |
1151 | #define target_has_all_memory target_has_all_memory_1 () | |
1152 | ||
1153 | /* Does the target include memory? (Dummy targets don't.) */ | |
1154 | ||
1155 | extern int target_has_memory_1 (void); | |
1156 | #define target_has_memory target_has_memory_1 () | |
1157 | ||
1158 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
1159 | we start a process.) */ | |
1160 | ||
1161 | extern int target_has_stack_1 (void); | |
1162 | #define target_has_stack target_has_stack_1 () | |
1163 | ||
1164 | /* Does the target have registers? (Exec files don't.) */ | |
1165 | ||
1166 | extern int target_has_registers_1 (void); | |
1167 | #define target_has_registers target_has_registers_1 () | |
1168 | ||
1169 | /* Does the target have execution? Can we make it jump (through | |
1170 | hoops), or pop its stack a few times? This means that the current | |
1171 | target is currently executing; for some targets, that's the same as | |
1172 | whether or not the target is capable of execution, but there are | |
1173 | also targets which can be current while not executing. In that | |
1174 | case this will become true after target_create_inferior or | |
1175 | target_attach. */ | |
1176 | ||
1177 | extern int target_has_execution_1 (void); | |
1178 | #define target_has_execution target_has_execution_1 () | |
1179 | ||
1180 | /* Default implementations for process_stratum targets. Return true | |
1181 | if there's a selected inferior, false otherwise. */ | |
1182 | ||
1183 | extern int default_child_has_all_memory (struct target_ops *ops); | |
1184 | extern int default_child_has_memory (struct target_ops *ops); | |
1185 | extern int default_child_has_stack (struct target_ops *ops); | |
1186 | extern int default_child_has_registers (struct target_ops *ops); | |
1187 | extern int default_child_has_execution (struct target_ops *ops); | |
1188 | ||
1189 | /* Can the target support the debugger control of thread execution? | |
1190 | Can it lock the thread scheduler? */ | |
1191 | ||
1192 | #define target_can_lock_scheduler \ | |
1193 | (current_target.to_has_thread_control & tc_schedlock) | |
1194 | ||
1195 | /* Should the target enable async mode if it is supported? Temporary | |
1196 | cludge until async mode is a strict superset of sync mode. */ | |
1197 | extern int target_async_permitted; | |
1198 | ||
1199 | /* Can the target support asynchronous execution? */ | |
1200 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
1201 | ||
1202 | /* Is the target in asynchronous execution mode? */ | |
1203 | #define target_is_async_p() (current_target.to_is_async_p ()) | |
1204 | ||
1205 | int target_supports_non_stop (void); | |
1206 | ||
1207 | /* Put the target in async mode with the specified callback function. */ | |
1208 | #define target_async(CALLBACK,CONTEXT) \ | |
1209 | (current_target.to_async ((CALLBACK), (CONTEXT))) | |
1210 | ||
1211 | /* This is to be used ONLY within call_function_by_hand(). It provides | |
1212 | a workaround, to have inferior function calls done in sychronous | |
1213 | mode, even though the target is asynchronous. After | |
1214 | target_async_mask(0) is called, calls to target_can_async_p() will | |
1215 | return FALSE , so that target_resume() will not try to start the | |
1216 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
1217 | restore the previous nature of the target, by calling | |
1218 | target_async_mask(1). After that, target_can_async_p() will return | |
1219 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. | |
1220 | ||
1221 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
1222 | the turning async on and off to the single execution commands, | |
1223 | from where it is done currently, in remote_resume(). */ | |
1224 | ||
1225 | #define target_async_mask(MASK) \ | |
1226 | (current_target.to_async_mask (MASK)) | |
1227 | ||
1228 | /* Converts a process id to a string. Usually, the string just contains | |
1229 | `process xyz', but on some systems it may contain | |
1230 | `process xyz thread abc'. */ | |
1231 | ||
1232 | extern char *target_pid_to_str (ptid_t ptid); | |
1233 | ||
1234 | extern char *normal_pid_to_str (ptid_t ptid); | |
1235 | ||
1236 | /* Return a short string describing extra information about PID, | |
1237 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
1238 | is okay. */ | |
1239 | ||
1240 | #define target_extra_thread_info(TP) \ | |
1241 | (current_target.to_extra_thread_info (TP)) | |
1242 | ||
1243 | /* Attempts to find the pathname of the executable file | |
1244 | that was run to create a specified process. | |
1245 | ||
1246 | The process PID must be stopped when this operation is used. | |
1247 | ||
1248 | If the executable file cannot be determined, NULL is returned. | |
1249 | ||
1250 | Else, a pointer to a character string containing the pathname | |
1251 | is returned. This string should be copied into a buffer by | |
1252 | the client if the string will not be immediately used, or if | |
1253 | it must persist. */ | |
1254 | ||
1255 | #define target_pid_to_exec_file(pid) \ | |
1256 | (current_target.to_pid_to_exec_file) (pid) | |
1257 | ||
1258 | /* See the to_thread_architecture description in struct target_ops. */ | |
1259 | ||
1260 | #define target_thread_architecture(ptid) \ | |
1261 | (current_target.to_thread_architecture (¤t_target, ptid)) | |
1262 | ||
1263 | /* | |
1264 | * Iterator function for target memory regions. | |
1265 | * Calls a callback function once for each memory region 'mapped' | |
1266 | * in the child process. Defined as a simple macro rather than | |
1267 | * as a function macro so that it can be tested for nullity. | |
1268 | */ | |
1269 | ||
1270 | #define target_find_memory_regions(FUNC, DATA) \ | |
1271 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
1272 | ||
1273 | /* | |
1274 | * Compose corefile .note section. | |
1275 | */ | |
1276 | ||
1277 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
1278 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
1279 | ||
1280 | /* Bookmark interfaces. */ | |
1281 | #define target_get_bookmark(ARGS, FROM_TTY) \ | |
1282 | (current_target.to_get_bookmark) (ARGS, FROM_TTY) | |
1283 | ||
1284 | #define target_goto_bookmark(ARG, FROM_TTY) \ | |
1285 | (current_target.to_goto_bookmark) (ARG, FROM_TTY) | |
1286 | ||
1287 | /* Hardware watchpoint interfaces. */ | |
1288 | ||
1289 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
1290 | write). Only the INFERIOR_PTID task is being queried. */ | |
1291 | ||
1292 | #define target_stopped_by_watchpoint \ | |
1293 | (*current_target.to_stopped_by_watchpoint) | |
1294 | ||
1295 | /* Non-zero if we have steppable watchpoints */ | |
1296 | ||
1297 | #define target_have_steppable_watchpoint \ | |
1298 | (current_target.to_have_steppable_watchpoint) | |
1299 | ||
1300 | /* Non-zero if we have continuable watchpoints */ | |
1301 | ||
1302 | #define target_have_continuable_watchpoint \ | |
1303 | (current_target.to_have_continuable_watchpoint) | |
1304 | ||
1305 | /* Provide defaults for hardware watchpoint functions. */ | |
1306 | ||
1307 | /* If the *_hw_beakpoint functions have not been defined | |
1308 | elsewhere use the definitions in the target vector. */ | |
1309 | ||
1310 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
1311 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
1312 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
1313 | (including this one?). OTHERTYPE is who knows what... */ | |
1314 | ||
1315 | #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \ | |
1316 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
1317 | ||
1318 | /* Returns the number of debug registers needed to watch the given | |
1319 | memory region, or zero if not supported. */ | |
1320 | ||
1321 | #define target_region_ok_for_hw_watchpoint(addr, len) \ | |
1322 | (*current_target.to_region_ok_for_hw_watchpoint) (addr, len) | |
1323 | ||
1324 | ||
1325 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. | |
1326 | TYPE is 0 for write, 1 for read, and 2 for read/write accesses. | |
1327 | COND is the expression for its condition, or NULL if there's none. | |
1328 | Returns 0 for success, 1 if the watchpoint type is not supported, | |
1329 | -1 for failure. */ | |
1330 | ||
1331 | #define target_insert_watchpoint(addr, len, type, cond) \ | |
1332 | (*current_target.to_insert_watchpoint) (addr, len, type, cond) | |
1333 | ||
1334 | #define target_remove_watchpoint(addr, len, type, cond) \ | |
1335 | (*current_target.to_remove_watchpoint) (addr, len, type, cond) | |
1336 | ||
1337 | #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \ | |
1338 | (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt) | |
1339 | ||
1340 | #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \ | |
1341 | (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt) | |
1342 | ||
1343 | /* Return non-zero if target knows the data address which triggered this | |
1344 | target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the | |
1345 | INFERIOR_PTID task is being queried. */ | |
1346 | #define target_stopped_data_address(target, addr_p) \ | |
1347 | (*target.to_stopped_data_address) (target, addr_p) | |
1348 | ||
1349 | #define target_watchpoint_addr_within_range(target, addr, start, length) \ | |
1350 | (*target.to_watchpoint_addr_within_range) (target, addr, start, length) | |
1351 | ||
1352 | /* Return non-zero if the target is capable of using hardware to evaluate | |
1353 | the condition expression. In this case, if the condition is false when | |
1354 | the watched memory location changes, execution may continue without the | |
1355 | debugger being notified. | |
1356 | ||
1357 | Due to limitations in the hardware implementation, it may be capable of | |
1358 | avoiding triggering the watchpoint in some cases where the condition | |
1359 | expression is false, but may report some false positives as well. | |
1360 | For this reason, GDB will still evaluate the condition expression when | |
1361 | the watchpoint triggers. */ | |
1362 | #define target_can_accel_watchpoint_condition(addr, len, type, cond) \ | |
1363 | (*current_target.to_can_accel_watchpoint_condition) (addr, len, type, cond) | |
1364 | ||
1365 | /* Target can execute in reverse? */ | |
1366 | #define target_can_execute_reverse \ | |
1367 | (current_target.to_can_execute_reverse ? \ | |
1368 | current_target.to_can_execute_reverse () : 0) | |
1369 | ||
1370 | extern const struct target_desc *target_read_description (struct target_ops *); | |
1371 | ||
1372 | #define target_get_ada_task_ptid(lwp, tid) \ | |
1373 | (*current_target.to_get_ada_task_ptid) (lwp,tid) | |
1374 | ||
1375 | /* Utility implementation of searching memory. */ | |
1376 | extern int simple_search_memory (struct target_ops* ops, | |
1377 | CORE_ADDR start_addr, | |
1378 | ULONGEST search_space_len, | |
1379 | const gdb_byte *pattern, | |
1380 | ULONGEST pattern_len, | |
1381 | CORE_ADDR *found_addrp); | |
1382 | ||
1383 | /* Main entry point for searching memory. */ | |
1384 | extern int target_search_memory (CORE_ADDR start_addr, | |
1385 | ULONGEST search_space_len, | |
1386 | const gdb_byte *pattern, | |
1387 | ULONGEST pattern_len, | |
1388 | CORE_ADDR *found_addrp); | |
1389 | ||
1390 | /* Tracepoint-related operations. */ | |
1391 | ||
1392 | #define target_trace_init() \ | |
1393 | (*current_target.to_trace_init) () | |
1394 | ||
1395 | #define target_download_tracepoint(t) \ | |
1396 | (*current_target.to_download_tracepoint) (t) | |
1397 | ||
1398 | #define target_download_trace_state_variable(tsv) \ | |
1399 | (*current_target.to_download_trace_state_variable) (tsv) | |
1400 | ||
1401 | #define target_trace_start() \ | |
1402 | (*current_target.to_trace_start) () | |
1403 | ||
1404 | #define target_trace_set_readonly_regions() \ | |
1405 | (*current_target.to_trace_set_readonly_regions) () | |
1406 | ||
1407 | #define target_get_trace_status(ts) \ | |
1408 | (*current_target.to_get_trace_status) (ts) | |
1409 | ||
1410 | #define target_trace_stop() \ | |
1411 | (*current_target.to_trace_stop) () | |
1412 | ||
1413 | #define target_trace_find(type,num,addr1,addr2,tpp) \ | |
1414 | (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp)) | |
1415 | ||
1416 | #define target_get_trace_state_variable_value(tsv,val) \ | |
1417 | (*current_target.to_get_trace_state_variable_value) ((tsv), (val)) | |
1418 | ||
1419 | #define target_save_trace_data(filename) \ | |
1420 | (*current_target.to_save_trace_data) (filename) | |
1421 | ||
1422 | #define target_upload_tracepoints(utpp) \ | |
1423 | (*current_target.to_upload_tracepoints) (utpp) | |
1424 | ||
1425 | #define target_upload_trace_state_variables(utsvp) \ | |
1426 | (*current_target.to_upload_trace_state_variables) (utsvp) | |
1427 | ||
1428 | #define target_get_raw_trace_data(buf,offset,len) \ | |
1429 | (*current_target.to_get_raw_trace_data) ((buf), (offset), (len)) | |
1430 | ||
1431 | #define target_set_disconnected_tracing(val) \ | |
1432 | (*current_target.to_set_disconnected_tracing) (val) | |
1433 | ||
1434 | #define target_set_circular_trace_buffer(val) \ | |
1435 | (*current_target.to_set_circular_trace_buffer) (val) | |
1436 | ||
1437 | #define target_get_tib_address(ptid, addr) \ | |
1438 | (*current_target.to_get_tib_address) ((ptid), (addr)) | |
1439 | ||
1440 | #define target_set_permissions() \ | |
1441 | (*current_target.to_set_permissions) () | |
1442 | ||
1443 | #define target_static_tracepoint_marker_at(addr, marker) \ | |
1444 | (*current_target.to_static_tracepoint_marker_at) (addr, marker) | |
1445 | ||
1446 | #define target_static_tracepoint_markers_by_strid(marker_id) \ | |
1447 | (*current_target.to_static_tracepoint_markers_by_strid) (marker_id) | |
1448 | ||
1449 | /* Command logging facility. */ | |
1450 | ||
1451 | #define target_log_command(p) \ | |
1452 | do \ | |
1453 | if (current_target.to_log_command) \ | |
1454 | (*current_target.to_log_command) (p); \ | |
1455 | while (0) | |
1456 | ||
1457 | ||
1458 | extern int target_core_of_thread (ptid_t ptid); | |
1459 | ||
1460 | /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches | |
1461 | the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0 | |
1462 | if there's a mismatch, and -1 if an error is encountered while | |
1463 | reading memory. Throws an error if the functionality is found not | |
1464 | to be supported by the current target. */ | |
1465 | int target_verify_memory (const gdb_byte *data, | |
1466 | CORE_ADDR memaddr, ULONGEST size); | |
1467 | ||
1468 | /* Routines for maintenance of the target structures... | |
1469 | ||
1470 | add_target: Add a target to the list of all possible targets. | |
1471 | ||
1472 | push_target: Make this target the top of the stack of currently used | |
1473 | targets, within its particular stratum of the stack. Result | |
1474 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1475 | should warn user). | |
1476 | ||
1477 | unpush_target: Remove this from the stack of currently used targets, | |
1478 | no matter where it is on the list. Returns 0 if no | |
1479 | change, 1 if removed from stack. | |
1480 | ||
1481 | pop_target: Remove the top thing on the stack of current targets. */ | |
1482 | ||
1483 | extern void add_target (struct target_ops *); | |
1484 | ||
1485 | extern void push_target (struct target_ops *); | |
1486 | ||
1487 | extern int unpush_target (struct target_ops *); | |
1488 | ||
1489 | extern void target_pre_inferior (int); | |
1490 | ||
1491 | extern void target_preopen (int); | |
1492 | ||
1493 | extern void pop_target (void); | |
1494 | ||
1495 | /* Does whatever cleanup is required to get rid of all pushed targets. | |
1496 | QUITTING is propagated to target_close; it indicates that GDB is | |
1497 | exiting and should not get hung on an error (otherwise it is | |
1498 | important to perform clean termination, even if it takes a | |
1499 | while). */ | |
1500 | extern void pop_all_targets (int quitting); | |
1501 | ||
1502 | /* Like pop_all_targets, but pops only targets whose stratum is | |
1503 | strictly above ABOVE_STRATUM. */ | |
1504 | extern void pop_all_targets_above (enum strata above_stratum, int quitting); | |
1505 | ||
1506 | extern int target_is_pushed (struct target_ops *t); | |
1507 | ||
1508 | extern CORE_ADDR target_translate_tls_address (struct objfile *objfile, | |
1509 | CORE_ADDR offset); | |
1510 | ||
1511 | /* Struct target_section maps address ranges to file sections. It is | |
1512 | mostly used with BFD files, but can be used without (e.g. for handling | |
1513 | raw disks, or files not in formats handled by BFD). */ | |
1514 | ||
1515 | struct target_section | |
1516 | { | |
1517 | CORE_ADDR addr; /* Lowest address in section */ | |
1518 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
1519 | ||
1520 | struct bfd_section *the_bfd_section; | |
1521 | ||
1522 | bfd *bfd; /* BFD file pointer */ | |
1523 | }; | |
1524 | ||
1525 | /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */ | |
1526 | ||
1527 | struct target_section_table | |
1528 | { | |
1529 | struct target_section *sections; | |
1530 | struct target_section *sections_end; | |
1531 | }; | |
1532 | ||
1533 | /* Return the "section" containing the specified address. */ | |
1534 | struct target_section *target_section_by_addr (struct target_ops *target, | |
1535 | CORE_ADDR addr); | |
1536 | ||
1537 | /* Return the target section table this target (or the targets | |
1538 | beneath) currently manipulate. */ | |
1539 | ||
1540 | extern struct target_section_table *target_get_section_table | |
1541 | (struct target_ops *target); | |
1542 | ||
1543 | /* From mem-break.c */ | |
1544 | ||
1545 | extern int memory_remove_breakpoint (struct gdbarch *, | |
1546 | struct bp_target_info *); | |
1547 | ||
1548 | extern int memory_insert_breakpoint (struct gdbarch *, | |
1549 | struct bp_target_info *); | |
1550 | ||
1551 | extern int default_memory_remove_breakpoint (struct gdbarch *, | |
1552 | struct bp_target_info *); | |
1553 | ||
1554 | extern int default_memory_insert_breakpoint (struct gdbarch *, | |
1555 | struct bp_target_info *); | |
1556 | ||
1557 | ||
1558 | /* From target.c */ | |
1559 | ||
1560 | extern void initialize_targets (void); | |
1561 | ||
1562 | extern void noprocess (void) ATTRIBUTE_NORETURN; | |
1563 | ||
1564 | extern void target_require_runnable (void); | |
1565 | ||
1566 | extern void find_default_attach (struct target_ops *, char *, int); | |
1567 | ||
1568 | extern void find_default_create_inferior (struct target_ops *, | |
1569 | char *, char *, char **, int); | |
1570 | ||
1571 | extern struct target_ops *find_run_target (void); | |
1572 | ||
1573 | extern struct target_ops *find_target_beneath (struct target_ops *); | |
1574 | ||
1575 | /* Read OS data object of type TYPE from the target, and return it in | |
1576 | XML format. The result is NUL-terminated and returned as a string, | |
1577 | allocated using xmalloc. If an error occurs or the transfer is | |
1578 | unsupported, NULL is returned. Empty objects are returned as | |
1579 | allocated but empty strings. */ | |
1580 | ||
1581 | extern char *target_get_osdata (const char *type); | |
1582 | ||
1583 | \f | |
1584 | /* Stuff that should be shared among the various remote targets. */ | |
1585 | ||
1586 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1587 | information (higher values, more information). */ | |
1588 | extern int remote_debug; | |
1589 | ||
1590 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1591 | extern int baud_rate; | |
1592 | /* Timeout limit for response from target. */ | |
1593 | extern int remote_timeout; | |
1594 | ||
1595 | \f | |
1596 | /* Functions for helping to write a native target. */ | |
1597 | ||
1598 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
1599 | extern void store_waitstatus (struct target_waitstatus *, int); | |
1600 | ||
1601 | /* These are in common/signals.c, but they're only used by gdb. */ | |
1602 | extern enum target_signal default_target_signal_from_host (struct gdbarch *, | |
1603 | int); | |
1604 | extern int default_target_signal_to_host (struct gdbarch *, | |
1605 | enum target_signal); | |
1606 | ||
1607 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
1608 | extern enum target_signal target_signal_from_command (int); | |
1609 | /* End of files in common/signals.c. */ | |
1610 | ||
1611 | /* Set the show memory breakpoints mode to show, and installs a cleanup | |
1612 | to restore it back to the current value. */ | |
1613 | extern struct cleanup *make_show_memory_breakpoints_cleanup (int show); | |
1614 | ||
1615 | extern int may_write_registers; | |
1616 | extern int may_write_memory; | |
1617 | extern int may_insert_breakpoints; | |
1618 | extern int may_insert_tracepoints; | |
1619 | extern int may_insert_fast_tracepoints; | |
1620 | extern int may_stop; | |
1621 | ||
1622 | extern void update_target_permissions (void); | |
1623 | ||
1624 | \f | |
1625 | /* Imported from machine dependent code. */ | |
1626 | ||
1627 | /* Blank target vector entries are initialized to target_ignore. */ | |
1628 | void target_ignore (void); | |
1629 | ||
1630 | extern struct target_ops deprecated_child_ops; | |
1631 | ||
1632 | #endif /* !defined (TARGET_H) */ |