Commit | Line | Data |
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c906108c | 1 | /* Interface between GDB and target environments, including files and processes |
0088c768 | 2 | |
197e01b6 | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
f6519ebc MK |
4 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
5 | Free Software Foundation, Inc. | |
0088c768 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. Written by John Gilmore. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
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 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
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. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
23 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
25 | |
26 | #if !defined (TARGET_H) | |
27 | #define TARGET_H | |
28 | ||
da3331ec AC |
29 | struct objfile; |
30 | struct ui_file; | |
31 | struct mem_attrib; | |
1e3ff5ad | 32 | struct target_ops; |
8181d85f | 33 | struct bp_target_info; |
da3331ec | 34 | |
c906108c SS |
35 | /* This include file defines the interface between the main part |
36 | of the debugger, and the part which is target-specific, or | |
37 | specific to the communications interface between us and the | |
38 | target. | |
39 | ||
2146d243 RM |
40 | A TARGET is an interface between the debugger and a particular |
41 | kind of file or process. Targets can be STACKED in STRATA, | |
c906108c SS |
42 | so that more than one target can potentially respond to a request. |
43 | In particular, memory accesses will walk down the stack of targets | |
44 | until they find a target that is interested in handling that particular | |
45 | address. STRATA are artificial boundaries on the stack, within | |
46 | which particular kinds of targets live. Strata exist so that | |
47 | people don't get confused by pushing e.g. a process target and then | |
48 | a file target, and wondering why they can't see the current values | |
49 | of variables any more (the file target is handling them and they | |
50 | never get to the process target). So when you push a file target, | |
51 | it goes into the file stratum, which is always below the process | |
52 | stratum. */ | |
53 | ||
54 | #include "bfd.h" | |
55 | #include "symtab.h" | |
4930751a | 56 | #include "dcache.h" |
29e57380 | 57 | #include "memattr.h" |
c906108c | 58 | |
c5aa993b JM |
59 | enum strata |
60 | { | |
61 | dummy_stratum, /* The lowest of the low */ | |
62 | file_stratum, /* Executable files, etc */ | |
63 | core_stratum, /* Core dump files */ | |
64 | download_stratum, /* Downloading of remote targets */ | |
d4f3574e SS |
65 | process_stratum, /* Executing processes */ |
66 | thread_stratum /* Executing threads */ | |
c5aa993b | 67 | }; |
c906108c | 68 | |
c5aa993b JM |
69 | enum thread_control_capabilities |
70 | { | |
0d06e24b JM |
71 | tc_none = 0, /* Default: can't control thread execution. */ |
72 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
73 | tc_switch = 2 /* Can switch the running thread on demand. */ | |
c5aa993b | 74 | }; |
c906108c SS |
75 | |
76 | /* Stuff for target_wait. */ | |
77 | ||
78 | /* Generally, what has the program done? */ | |
c5aa993b JM |
79 | enum target_waitkind |
80 | { | |
81 | /* The program has exited. The exit status is in value.integer. */ | |
82 | TARGET_WAITKIND_EXITED, | |
c906108c | 83 | |
0d06e24b JM |
84 | /* The program has stopped with a signal. Which signal is in |
85 | value.sig. */ | |
c5aa993b | 86 | TARGET_WAITKIND_STOPPED, |
c906108c | 87 | |
c5aa993b JM |
88 | /* The program has terminated with a signal. Which signal is in |
89 | value.sig. */ | |
90 | TARGET_WAITKIND_SIGNALLED, | |
c906108c | 91 | |
c5aa993b JM |
92 | /* The program is letting us know that it dynamically loaded something |
93 | (e.g. it called load(2) on AIX). */ | |
94 | TARGET_WAITKIND_LOADED, | |
c906108c | 95 | |
0d06e24b JM |
96 | /* The program has forked. A "related" process' ID is in |
97 | value.related_pid. I.e., if the child forks, value.related_pid | |
98 | is the parent's ID. */ | |
99 | ||
c5aa993b | 100 | TARGET_WAITKIND_FORKED, |
c906108c | 101 | |
0d06e24b JM |
102 | /* The program has vforked. A "related" process's ID is in |
103 | value.related_pid. */ | |
104 | ||
c5aa993b | 105 | TARGET_WAITKIND_VFORKED, |
c906108c | 106 | |
0d06e24b JM |
107 | /* The program has exec'ed a new executable file. The new file's |
108 | pathname is pointed to by value.execd_pathname. */ | |
109 | ||
c5aa993b | 110 | TARGET_WAITKIND_EXECD, |
c906108c | 111 | |
0d06e24b JM |
112 | /* The program has entered or returned from a system call. On |
113 | HP-UX, this is used in the hardware watchpoint implementation. | |
114 | The syscall's unique integer ID number is in value.syscall_id */ | |
115 | ||
c5aa993b JM |
116 | TARGET_WAITKIND_SYSCALL_ENTRY, |
117 | TARGET_WAITKIND_SYSCALL_RETURN, | |
c906108c | 118 | |
c5aa993b JM |
119 | /* Nothing happened, but we stopped anyway. This perhaps should be handled |
120 | within target_wait, but I'm not sure target_wait should be resuming the | |
121 | inferior. */ | |
c4093a6a JM |
122 | TARGET_WAITKIND_SPURIOUS, |
123 | ||
8e7d2c16 DJ |
124 | /* An event has occured, but we should wait again. |
125 | Remote_async_wait() returns this when there is an event | |
c4093a6a JM |
126 | on the inferior, but the rest of the world is not interested in |
127 | it. The inferior has not stopped, but has just sent some output | |
128 | to the console, for instance. In this case, we want to go back | |
129 | to the event loop and wait there for another event from the | |
130 | inferior, rather than being stuck in the remote_async_wait() | |
131 | function. This way the event loop is responsive to other events, | |
0d06e24b | 132 | like for instance the user typing. */ |
c4093a6a | 133 | TARGET_WAITKIND_IGNORE |
c906108c SS |
134 | }; |
135 | ||
c5aa993b JM |
136 | struct target_waitstatus |
137 | { | |
138 | enum target_waitkind kind; | |
139 | ||
140 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
141 | union | |
142 | { | |
143 | int integer; | |
144 | enum target_signal sig; | |
145 | int related_pid; | |
146 | char *execd_pathname; | |
147 | int syscall_id; | |
148 | } | |
149 | value; | |
150 | }; | |
c906108c | 151 | |
2acceee2 | 152 | /* Possible types of events that the inferior handler will have to |
0d06e24b | 153 | deal with. */ |
2acceee2 JM |
154 | enum inferior_event_type |
155 | { | |
0d06e24b | 156 | /* There is a request to quit the inferior, abandon it. */ |
2acceee2 JM |
157 | INF_QUIT_REQ, |
158 | /* Process a normal inferior event which will result in target_wait | |
0d06e24b | 159 | being called. */ |
2146d243 | 160 | INF_REG_EVENT, |
0d06e24b | 161 | /* Deal with an error on the inferior. */ |
2acceee2 | 162 | INF_ERROR, |
0d06e24b | 163 | /* We are called because a timer went off. */ |
2acceee2 | 164 | INF_TIMER, |
0d06e24b | 165 | /* We are called to do stuff after the inferior stops. */ |
c2d11a7d JM |
166 | INF_EXEC_COMPLETE, |
167 | /* We are called to do some stuff after the inferior stops, but we | |
168 | are expected to reenter the proceed() and | |
169 | handle_inferior_event() functions. This is used only in case of | |
0d06e24b | 170 | 'step n' like commands. */ |
c2d11a7d | 171 | INF_EXEC_CONTINUE |
2acceee2 JM |
172 | }; |
173 | ||
c906108c | 174 | /* Return the string for a signal. */ |
a14ed312 | 175 | extern char *target_signal_to_string (enum target_signal); |
c906108c SS |
176 | |
177 | /* Return the name (SIGHUP, etc.) for a signal. */ | |
a14ed312 | 178 | extern char *target_signal_to_name (enum target_signal); |
c906108c SS |
179 | |
180 | /* Given a name (SIGHUP, etc.), return its signal. */ | |
a14ed312 | 181 | enum target_signal target_signal_from_name (char *); |
c906108c | 182 | \f |
13547ab6 DJ |
183 | /* Target objects which can be transfered using target_read, |
184 | target_write, et cetera. */ | |
1e3ff5ad AC |
185 | |
186 | enum target_object | |
187 | { | |
1e3ff5ad AC |
188 | /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */ |
189 | TARGET_OBJECT_AVR, | |
190 | /* Transfer up-to LEN bytes of memory starting at OFFSET. */ | |
287a334e JJ |
191 | TARGET_OBJECT_MEMORY, |
192 | /* Kernel Unwind Table. See "ia64-tdep.c". */ | |
193 | TARGET_OBJECT_UNWIND_TABLE, | |
2146d243 RM |
194 | /* Transfer auxilliary vector. */ |
195 | TARGET_OBJECT_AUXV, | |
baf92889 MK |
196 | /* StackGhost cookie. See "sparc-tdep.c". */ |
197 | TARGET_OBJECT_WCOOKIE | |
2146d243 RM |
198 | |
199 | /* Possible future objects: TARGET_OBJECT_FILE, TARGET_OBJECT_PROC, ... */ | |
1e3ff5ad AC |
200 | }; |
201 | ||
13547ab6 DJ |
202 | /* Request that OPS transfer up to LEN 8-bit bytes of the target's |
203 | OBJECT. The OFFSET, for a seekable object, specifies the | |
204 | starting point. The ANNEX can be used to provide additional | |
205 | data-specific information to the target. | |
1e3ff5ad | 206 | |
13547ab6 DJ |
207 | Return the number of bytes actually transfered, or -1 if the |
208 | transfer is not supported or otherwise fails. Return of a positive | |
209 | value less than LEN indicates that no further transfer is possible. | |
210 | Unlike the raw to_xfer_partial interface, callers of these | |
211 | functions do not need to retry partial transfers. */ | |
1e3ff5ad | 212 | |
1e3ff5ad AC |
213 | extern LONGEST target_read (struct target_ops *ops, |
214 | enum target_object object, | |
1b0ba102 | 215 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
216 | ULONGEST offset, LONGEST len); |
217 | ||
218 | extern LONGEST target_write (struct target_ops *ops, | |
219 | enum target_object object, | |
1b0ba102 | 220 | const char *annex, const gdb_byte *buf, |
1e3ff5ad | 221 | ULONGEST offset, LONGEST len); |
b6591e8b | 222 | |
13547ab6 DJ |
223 | /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will |
224 | be read using OPS. The return value will be -1 if the transfer | |
225 | fails or is not supported; 0 if the object is empty; or the length | |
226 | of the object otherwise. If a positive value is returned, a | |
227 | sufficiently large buffer will be allocated using xmalloc and | |
228 | returned in *BUF_P containing the contents of the object. | |
229 | ||
230 | This method should be used for objects sufficiently small to store | |
231 | in a single xmalloc'd buffer, when no fixed bound on the object's | |
232 | size is known in advance. Don't try to read TARGET_OBJECT_MEMORY | |
233 | through this function. */ | |
234 | ||
235 | extern LONGEST target_read_alloc (struct target_ops *ops, | |
236 | enum target_object object, | |
237 | const char *annex, gdb_byte **buf_p); | |
238 | ||
159f81f3 DJ |
239 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and |
240 | returned as a string, allocated using xmalloc. If an error occurs | |
241 | or the transfer is unsupported, NULL is returned. Empty objects | |
242 | are returned as allocated but empty strings. A warning is issued | |
243 | if the result contains any embedded NUL bytes. */ | |
244 | ||
245 | extern char *target_read_stralloc (struct target_ops *ops, | |
246 | enum target_object object, | |
247 | const char *annex); | |
248 | ||
b6591e8b AC |
249 | /* Wrappers to target read/write that perform memory transfers. They |
250 | throw an error if the memory transfer fails. | |
251 | ||
252 | NOTE: cagney/2003-10-23: The naming schema is lifted from | |
253 | "frame.h". The parameter order is lifted from get_frame_memory, | |
254 | which in turn lifted it from read_memory. */ | |
255 | ||
256 | extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr, | |
1b0ba102 | 257 | gdb_byte *buf, LONGEST len); |
b6591e8b AC |
258 | extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, |
259 | CORE_ADDR addr, int len); | |
1e3ff5ad | 260 | \f |
c5aa993b | 261 | |
c906108c SS |
262 | /* If certain kinds of activity happen, target_wait should perform |
263 | callbacks. */ | |
264 | /* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible | |
0d06e24b | 265 | on TARGET_ACTIVITY_FD. */ |
c906108c SS |
266 | extern int target_activity_fd; |
267 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
507f3c78 | 268 | extern int (*target_activity_function) (void); |
c906108c | 269 | \f |
0d06e24b JM |
270 | struct thread_info; /* fwd decl for parameter list below: */ |
271 | ||
c906108c | 272 | struct target_ops |
c5aa993b | 273 | { |
258b763a | 274 | struct target_ops *beneath; /* To the target under this one. */ |
c5aa993b JM |
275 | char *to_shortname; /* Name this target type */ |
276 | char *to_longname; /* Name for printing */ | |
277 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 278 | newline, and starts with a one-line descrip- |
0d06e24b | 279 | tion (probably similar to to_longname). */ |
bba2d28d AC |
280 | /* Per-target scratch pad. */ |
281 | void *to_data; | |
f1c07ab0 AC |
282 | /* The open routine takes the rest of the parameters from the |
283 | command, and (if successful) pushes a new target onto the | |
284 | stack. Targets should supply this routine, if only to provide | |
285 | an error message. */ | |
507f3c78 | 286 | void (*to_open) (char *, int); |
f1c07ab0 AC |
287 | /* Old targets with a static target vector provide "to_close". |
288 | New re-entrant targets provide "to_xclose" and that is expected | |
289 | to xfree everything (including the "struct target_ops"). */ | |
290 | void (*to_xclose) (struct target_ops *targ, int quitting); | |
507f3c78 KB |
291 | void (*to_close) (int); |
292 | void (*to_attach) (char *, int); | |
293 | void (*to_post_attach) (int); | |
507f3c78 | 294 | void (*to_detach) (char *, int); |
597320e7 | 295 | void (*to_disconnect) (struct target_ops *, char *, int); |
39f77062 KB |
296 | void (*to_resume) (ptid_t, int, enum target_signal); |
297 | ptid_t (*to_wait) (ptid_t, struct target_waitstatus *); | |
507f3c78 KB |
298 | void (*to_fetch_registers) (int); |
299 | void (*to_store_registers) (int); | |
300 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
301 | |
302 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
303 | target address MEMADDR. If WRITE, transfer them to the target, else | |
304 | transfer them from the target. TARGET is the target from which we | |
305 | get this function. | |
306 | ||
307 | Return value, N, is one of the following: | |
308 | ||
309 | 0 means that we can't handle this. If errno has been set, it is the | |
310 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
311 | ||
312 | positive (call it N) means that we have transferred N bytes | |
313 | starting at MEMADDR. We might be able to handle more bytes | |
314 | beyond this length, but no promises. | |
315 | ||
316 | negative (call its absolute value N) means that we cannot | |
317 | transfer right at MEMADDR, but we could transfer at least | |
c8e73a31 | 318 | something at MEMADDR + N. |
c5aa993b | 319 | |
c8e73a31 AC |
320 | NOTE: cagney/2004-10-01: This has been entirely superseeded by |
321 | to_xfer_partial and inferior inheritance. */ | |
322 | ||
1b0ba102 | 323 | int (*deprecated_xfer_memory) (CORE_ADDR memaddr, gdb_byte *myaddr, |
c8e73a31 AC |
324 | int len, int write, |
325 | struct mem_attrib *attrib, | |
326 | struct target_ops *target); | |
c906108c | 327 | |
507f3c78 | 328 | void (*to_files_info) (struct target_ops *); |
8181d85f DJ |
329 | int (*to_insert_breakpoint) (struct bp_target_info *); |
330 | int (*to_remove_breakpoint) (struct bp_target_info *); | |
ccaa32c7 | 331 | int (*to_can_use_hw_breakpoint) (int, int, int); |
8181d85f DJ |
332 | int (*to_insert_hw_breakpoint) (struct bp_target_info *); |
333 | int (*to_remove_hw_breakpoint) (struct bp_target_info *); | |
ccaa32c7 GS |
334 | int (*to_remove_watchpoint) (CORE_ADDR, int, int); |
335 | int (*to_insert_watchpoint) (CORE_ADDR, int, int); | |
336 | int (*to_stopped_by_watchpoint) (void); | |
7df1a324 | 337 | int to_have_continuable_watchpoint; |
4aa7a7f5 | 338 | int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *); |
e0d24f8d | 339 | int (*to_region_ok_for_hw_watchpoint) (CORE_ADDR, int); |
507f3c78 KB |
340 | void (*to_terminal_init) (void); |
341 | void (*to_terminal_inferior) (void); | |
342 | void (*to_terminal_ours_for_output) (void); | |
343 | void (*to_terminal_ours) (void); | |
a790ad35 | 344 | void (*to_terminal_save_ours) (void); |
507f3c78 KB |
345 | void (*to_terminal_info) (char *, int); |
346 | void (*to_kill) (void); | |
347 | void (*to_load) (char *, int); | |
348 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
c27cda74 | 349 | void (*to_create_inferior) (char *, char *, char **, int); |
39f77062 | 350 | void (*to_post_startup_inferior) (ptid_t); |
507f3c78 | 351 | void (*to_acknowledge_created_inferior) (int); |
fa113d1a | 352 | void (*to_insert_fork_catchpoint) (int); |
507f3c78 | 353 | int (*to_remove_fork_catchpoint) (int); |
fa113d1a | 354 | void (*to_insert_vfork_catchpoint) (int); |
507f3c78 | 355 | int (*to_remove_vfork_catchpoint) (int); |
ee057212 | 356 | int (*to_follow_fork) (struct target_ops *, int); |
fa113d1a | 357 | void (*to_insert_exec_catchpoint) (int); |
507f3c78 | 358 | int (*to_remove_exec_catchpoint) (int); |
507f3c78 | 359 | int (*to_reported_exec_events_per_exec_call) (void); |
507f3c78 KB |
360 | int (*to_has_exited) (int, int, int *); |
361 | void (*to_mourn_inferior) (void); | |
362 | int (*to_can_run) (void); | |
39f77062 KB |
363 | void (*to_notice_signals) (ptid_t ptid); |
364 | int (*to_thread_alive) (ptid_t ptid); | |
507f3c78 | 365 | void (*to_find_new_threads) (void); |
39f77062 | 366 | char *(*to_pid_to_str) (ptid_t); |
507f3c78 KB |
367 | char *(*to_extra_thread_info) (struct thread_info *); |
368 | void (*to_stop) (void); | |
d9fcf2fb | 369 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
370 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
371 | exception_event_kind, | |
372 | int); | |
373 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
374 | char *(*to_pid_to_exec_file) (int pid); | |
c5aa993b | 375 | enum strata to_stratum; |
c5aa993b JM |
376 | int to_has_all_memory; |
377 | int to_has_memory; | |
378 | int to_has_stack; | |
379 | int to_has_registers; | |
380 | int to_has_execution; | |
381 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
382 | struct section_table |
383 | *to_sections; | |
384 | struct section_table | |
385 | *to_sections_end; | |
6426a772 JM |
386 | /* ASYNC target controls */ |
387 | int (*to_can_async_p) (void); | |
388 | int (*to_is_async_p) (void); | |
0d06e24b JM |
389 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
390 | void *context); | |
ed9a39eb | 391 | int to_async_mask_value; |
2146d243 RM |
392 | int (*to_find_memory_regions) (int (*) (CORE_ADDR, |
393 | unsigned long, | |
394 | int, int, int, | |
395 | void *), | |
be4d1333 MS |
396 | void *); |
397 | char * (*to_make_corefile_notes) (bfd *, int *); | |
3f47be5c EZ |
398 | |
399 | /* Return the thread-local address at OFFSET in the | |
400 | thread-local storage for the thread PTID and the shared library | |
401 | or executable file given by OBJFILE. If that block of | |
402 | thread-local storage hasn't been allocated yet, this function | |
403 | may return an error. */ | |
404 | CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid, | |
b2756930 | 405 | CORE_ADDR load_module_addr, |
3f47be5c EZ |
406 | CORE_ADDR offset); |
407 | ||
13547ab6 DJ |
408 | /* Request that OPS transfer up to LEN 8-bit bytes of the target's |
409 | OBJECT. The OFFSET, for a seekable object, specifies the | |
410 | starting point. The ANNEX can be used to provide additional | |
411 | data-specific information to the target. | |
412 | ||
413 | Return the number of bytes actually transfered, zero when no | |
414 | further transfer is possible, and -1 when the transfer is not | |
415 | supported. Return of a positive value smaller than LEN does | |
416 | not indicate the end of the object, only the end of the | |
417 | transfer; higher level code should continue transferring if | |
418 | desired. This is handled in target.c. | |
419 | ||
420 | The interface does not support a "retry" mechanism. Instead it | |
421 | assumes that at least one byte will be transfered on each | |
422 | successful call. | |
423 | ||
424 | NOTE: cagney/2003-10-17: The current interface can lead to | |
425 | fragmented transfers. Lower target levels should not implement | |
426 | hacks, such as enlarging the transfer, in an attempt to | |
427 | compensate for this. Instead, the target stack should be | |
428 | extended so that it implements supply/collect methods and a | |
429 | look-aside object cache. With that available, the lowest | |
430 | target can safely and freely "push" data up the stack. | |
431 | ||
432 | See target_read and target_write for more information. One, | |
433 | and only one, of readbuf or writebuf must be non-NULL. */ | |
434 | ||
4b8a223f | 435 | LONGEST (*to_xfer_partial) (struct target_ops *ops, |
8aa91c1e | 436 | enum target_object object, const char *annex, |
1b0ba102 | 437 | gdb_byte *readbuf, const gdb_byte *writebuf, |
8aa91c1e | 438 | ULONGEST offset, LONGEST len); |
1e3ff5ad | 439 | |
c5aa993b | 440 | int to_magic; |
0d06e24b JM |
441 | /* Need sub-structure for target machine related rather than comm related? |
442 | */ | |
c5aa993b | 443 | }; |
c906108c SS |
444 | |
445 | /* Magic number for checking ops size. If a struct doesn't end with this | |
446 | number, somebody changed the declaration but didn't change all the | |
447 | places that initialize one. */ | |
448 | ||
449 | #define OPS_MAGIC 3840 | |
450 | ||
451 | /* The ops structure for our "current" target process. This should | |
452 | never be NULL. If there is no target, it points to the dummy_target. */ | |
453 | ||
c5aa993b | 454 | extern struct target_ops current_target; |
c906108c | 455 | |
c906108c SS |
456 | /* Define easy words for doing these operations on our current target. */ |
457 | ||
458 | #define target_shortname (current_target.to_shortname) | |
459 | #define target_longname (current_target.to_longname) | |
460 | ||
f1c07ab0 AC |
461 | /* Does whatever cleanup is required for a target that we are no |
462 | longer going to be calling. QUITTING indicates that GDB is exiting | |
463 | and should not get hung on an error (otherwise it is important to | |
464 | perform clean termination, even if it takes a while). This routine | |
465 | is automatically always called when popping the target off the | |
466 | target stack (to_beneath is undefined). Closing file descriptors | |
467 | and freeing all memory allocated memory are typical things it | |
468 | should do. */ | |
469 | ||
470 | void target_close (struct target_ops *targ, int quitting); | |
c906108c SS |
471 | |
472 | /* Attaches to a process on the target side. Arguments are as passed | |
473 | to the `attach' command by the user. This routine can be called | |
474 | when the target is not on the target-stack, if the target_can_run | |
2146d243 | 475 | routine returns 1; in that case, it must push itself onto the stack. |
c906108c | 476 | Upon exit, the target should be ready for normal operations, and |
2146d243 | 477 | should be ready to deliver the status of the process immediately |
c906108c SS |
478 | (without waiting) to an upcoming target_wait call. */ |
479 | ||
480 | #define target_attach(args, from_tty) \ | |
0d06e24b | 481 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
482 | |
483 | /* The target_attach operation places a process under debugger control, | |
484 | and stops the process. | |
485 | ||
486 | This operation provides a target-specific hook that allows the | |
0d06e24b | 487 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 488 | #define target_post_attach(pid) \ |
0d06e24b | 489 | (*current_target.to_post_attach) (pid) |
c906108c | 490 | |
c906108c SS |
491 | /* Takes a program previously attached to and detaches it. |
492 | The program may resume execution (some targets do, some don't) and will | |
493 | no longer stop on signals, etc. We better not have left any breakpoints | |
494 | in the program or it'll die when it hits one. ARGS is arguments | |
495 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
496 | says whether to be verbose or not. */ | |
497 | ||
a14ed312 | 498 | extern void target_detach (char *, int); |
c906108c | 499 | |
6ad8ae5c DJ |
500 | /* Disconnect from the current target without resuming it (leaving it |
501 | waiting for a debugger). */ | |
502 | ||
503 | extern void target_disconnect (char *, int); | |
504 | ||
39f77062 | 505 | /* Resume execution of the target process PTID. STEP says whether to |
c906108c SS |
506 | single-step or to run free; SIGGNAL is the signal to be given to |
507 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
508 | pass TARGET_SIGNAL_DEFAULT. */ | |
509 | ||
39f77062 | 510 | #define target_resume(ptid, step, siggnal) \ |
4930751a C |
511 | do { \ |
512 | dcache_invalidate(target_dcache); \ | |
39f77062 | 513 | (*current_target.to_resume) (ptid, step, siggnal); \ |
4930751a | 514 | } while (0) |
c906108c | 515 | |
b5a2688f AC |
516 | /* Wait for process pid to do something. PTID = -1 to wait for any |
517 | pid to do something. Return pid of child, or -1 in case of error; | |
c906108c | 518 | store status through argument pointer STATUS. Note that it is |
b5a2688f | 519 | _NOT_ OK to throw_exception() out of target_wait() without popping |
c906108c SS |
520 | the debugging target from the stack; GDB isn't prepared to get back |
521 | to the prompt with a debugging target but without the frame cache, | |
522 | stop_pc, etc., set up. */ | |
523 | ||
39f77062 KB |
524 | #define target_wait(ptid, status) \ |
525 | (*current_target.to_wait) (ptid, status) | |
c906108c | 526 | |
17dee195 | 527 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
528 | |
529 | #define target_fetch_registers(regno) \ | |
0d06e24b | 530 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
531 | |
532 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
533 | It can store as many registers as it wants to, so target_prepare_to_store | |
534 | must have been previously called. Calls error() if there are problems. */ | |
535 | ||
536 | #define target_store_registers(regs) \ | |
0d06e24b | 537 | (*current_target.to_store_registers) (regs) |
c906108c SS |
538 | |
539 | /* Get ready to modify the registers array. On machines which store | |
540 | individual registers, this doesn't need to do anything. On machines | |
541 | which store all the registers in one fell swoop, this makes sure | |
542 | that REGISTERS contains all the registers from the program being | |
543 | debugged. */ | |
544 | ||
545 | #define target_prepare_to_store() \ | |
0d06e24b | 546 | (*current_target.to_prepare_to_store) () |
c906108c | 547 | |
4930751a C |
548 | extern DCACHE *target_dcache; |
549 | ||
1b0ba102 AC |
550 | extern int do_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, |
551 | int write, struct mem_attrib *attrib); | |
4930751a | 552 | |
a14ed312 | 553 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 554 | |
fc1a4b47 | 555 | extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len); |
c906108c | 556 | |
fc1a4b47 | 557 | extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, |
10e2d419 | 558 | int len); |
c906108c | 559 | |
1b0ba102 | 560 | extern int xfer_memory (CORE_ADDR, gdb_byte *, int, int, |
29e57380 | 561 | struct mem_attrib *, struct target_ops *); |
c906108c | 562 | |
6c932e54 | 563 | extern int child_xfer_memory (CORE_ADDR, gdb_byte *, int, int, |
29e57380 | 564 | struct mem_attrib *, struct target_ops *); |
c906108c | 565 | |
917317f4 JM |
566 | /* Make a single attempt at transfering LEN bytes. On a successful |
567 | transfer, the number of bytes actually transfered is returned and | |
568 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
569 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 570 | non-zero error indication. */ |
917317f4 | 571 | |
f6519ebc MK |
572 | extern int target_read_memory_partial (CORE_ADDR addr, gdb_byte *buf, |
573 | int len, int *err); | |
917317f4 | 574 | |
f6519ebc MK |
575 | extern int target_write_memory_partial (CORE_ADDR addr, gdb_byte *buf, |
576 | int len, int *err); | |
917317f4 | 577 | |
a14ed312 | 578 | extern char *child_pid_to_exec_file (int); |
c906108c | 579 | |
a14ed312 | 580 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
581 | |
582 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 583 | extern void child_post_attach (int); |
c906108c SS |
584 | #endif |
585 | ||
39f77062 | 586 | extern void child_post_startup_inferior (ptid_t); |
c906108c | 587 | |
a14ed312 | 588 | extern void child_acknowledge_created_inferior (int); |
c906108c | 589 | |
fa113d1a | 590 | extern void child_insert_fork_catchpoint (int); |
c906108c | 591 | |
a14ed312 | 592 | extern int child_remove_fork_catchpoint (int); |
c906108c | 593 | |
fa113d1a | 594 | extern void child_insert_vfork_catchpoint (int); |
c906108c | 595 | |
a14ed312 | 596 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 597 | |
a14ed312 | 598 | extern void child_acknowledge_created_inferior (int); |
c906108c | 599 | |
ee057212 | 600 | extern int child_follow_fork (struct target_ops *, int); |
c906108c | 601 | |
fa113d1a | 602 | extern void child_insert_exec_catchpoint (int); |
c906108c | 603 | |
a14ed312 | 604 | extern int child_remove_exec_catchpoint (int); |
c906108c | 605 | |
a14ed312 | 606 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 607 | |
a14ed312 | 608 | extern int child_has_exited (int, int, int *); |
c906108c | 609 | |
39f77062 | 610 | extern int child_thread_alive (ptid_t); |
c906108c | 611 | |
47932f85 DJ |
612 | /* From infrun.c. */ |
613 | ||
614 | extern int inferior_has_forked (int pid, int *child_pid); | |
615 | ||
616 | extern int inferior_has_vforked (int pid, int *child_pid); | |
617 | ||
618 | extern int inferior_has_execd (int pid, char **execd_pathname); | |
619 | ||
c906108c SS |
620 | /* From exec.c */ |
621 | ||
a14ed312 | 622 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
623 | |
624 | /* Print a line about the current target. */ | |
625 | ||
626 | #define target_files_info() \ | |
0d06e24b | 627 | (*current_target.to_files_info) (¤t_target) |
c906108c | 628 | |
8181d85f DJ |
629 | /* Insert a breakpoint at address BP_TGT->placed_address in the target |
630 | machine. Result is 0 for success, or an errno value. */ | |
c906108c | 631 | |
8181d85f DJ |
632 | #define target_insert_breakpoint(bp_tgt) \ |
633 | (*current_target.to_insert_breakpoint) (bp_tgt) | |
c906108c | 634 | |
8181d85f DJ |
635 | /* Remove a breakpoint at address BP_TGT->placed_address in the target |
636 | machine. Result is 0 for success, or an errno value. */ | |
c906108c | 637 | |
8181d85f DJ |
638 | #define target_remove_breakpoint(bp_tgt) \ |
639 | (*current_target.to_remove_breakpoint) (bp_tgt) | |
c906108c SS |
640 | |
641 | /* Initialize the terminal settings we record for the inferior, | |
642 | before we actually run the inferior. */ | |
643 | ||
644 | #define target_terminal_init() \ | |
0d06e24b | 645 | (*current_target.to_terminal_init) () |
c906108c SS |
646 | |
647 | /* Put the inferior's terminal settings into effect. | |
648 | This is preparation for starting or resuming the inferior. */ | |
649 | ||
650 | #define target_terminal_inferior() \ | |
0d06e24b | 651 | (*current_target.to_terminal_inferior) () |
c906108c SS |
652 | |
653 | /* Put some of our terminal settings into effect, | |
654 | enough to get proper results from our output, | |
655 | but do not change into or out of RAW mode | |
656 | so that no input is discarded. | |
657 | ||
658 | After doing this, either terminal_ours or terminal_inferior | |
659 | should be called to get back to a normal state of affairs. */ | |
660 | ||
661 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 662 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
663 | |
664 | /* Put our terminal settings into effect. | |
665 | First record the inferior's terminal settings | |
666 | so they can be restored properly later. */ | |
667 | ||
668 | #define target_terminal_ours() \ | |
0d06e24b | 669 | (*current_target.to_terminal_ours) () |
c906108c | 670 | |
a790ad35 SC |
671 | /* Save our terminal settings. |
672 | This is called from TUI after entering or leaving the curses | |
673 | mode. Since curses modifies our terminal this call is here | |
674 | to take this change into account. */ | |
675 | ||
676 | #define target_terminal_save_ours() \ | |
677 | (*current_target.to_terminal_save_ours) () | |
678 | ||
c906108c SS |
679 | /* Print useful information about our terminal status, if such a thing |
680 | exists. */ | |
681 | ||
682 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 683 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
684 | |
685 | /* Kill the inferior process. Make it go away. */ | |
686 | ||
687 | #define target_kill() \ | |
0d06e24b | 688 | (*current_target.to_kill) () |
c906108c | 689 | |
0d06e24b JM |
690 | /* Load an executable file into the target process. This is expected |
691 | to not only bring new code into the target process, but also to | |
1986bccd AS |
692 | update GDB's symbol tables to match. |
693 | ||
694 | ARG contains command-line arguments, to be broken down with | |
695 | buildargv (). The first non-switch argument is the filename to | |
696 | load, FILE; the second is a number (as parsed by strtoul (..., ..., | |
697 | 0)), which is an offset to apply to the load addresses of FILE's | |
698 | sections. The target may define switches, or other non-switch | |
699 | arguments, as it pleases. */ | |
c906108c | 700 | |
11cf8741 | 701 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
702 | |
703 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
704 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
705 | symbol should be returned. The result is 0 if successful, nonzero | |
706 | if the symbol does not exist in the target environment. This | |
707 | function should not call error() if communication with the target | |
708 | is interrupted, since it is called from symbol reading, but should | |
709 | return nonzero, possibly doing a complain(). */ | |
c906108c | 710 | |
0d06e24b JM |
711 | #define target_lookup_symbol(name, addrp) \ |
712 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c | 713 | |
39f77062 | 714 | /* Start an inferior process and set inferior_ptid to its pid. |
c906108c SS |
715 | EXEC_FILE is the file to run. |
716 | ALLARGS is a string containing the arguments to the program. | |
717 | ENV is the environment vector to pass. Errors reported with error(). | |
718 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 719 | |
c27cda74 AC |
720 | #define target_create_inferior(exec_file, args, env, FROM_TTY) \ |
721 | (*current_target.to_create_inferior) (exec_file, args, env, (FROM_TTY)) | |
c906108c SS |
722 | |
723 | ||
724 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
725 | notification of inferior events such as fork and vork immediately | |
726 | after the inferior is created. (This because of how gdb gets an | |
727 | inferior created via invoking a shell to do it. In such a scenario, | |
728 | if the shell init file has commands in it, the shell will fork and | |
729 | exec for each of those commands, and we will see each such fork | |
730 | event. Very bad.) | |
c5aa993b | 731 | |
0d06e24b JM |
732 | Such targets will supply an appropriate definition for this function. */ |
733 | ||
39f77062 KB |
734 | #define target_post_startup_inferior(ptid) \ |
735 | (*current_target.to_post_startup_inferior) (ptid) | |
c906108c SS |
736 | |
737 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
738 | some synchronization between gdb and the new inferior process, PID. */ |
739 | ||
c906108c | 740 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 741 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c | 742 | |
0d06e24b JM |
743 | /* On some targets, we can catch an inferior fork or vfork event when |
744 | it occurs. These functions insert/remove an already-created | |
745 | catchpoint for such events. */ | |
c906108c | 746 | |
c906108c | 747 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 748 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
749 | |
750 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 751 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
752 | |
753 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 754 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
755 | |
756 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 757 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c | 758 | |
6604731b DJ |
759 | /* If the inferior forks or vforks, this function will be called at |
760 | the next resume in order to perform any bookkeeping and fiddling | |
761 | necessary to continue debugging either the parent or child, as | |
762 | requested, and releasing the other. Information about the fork | |
763 | or vfork event is available via get_last_target_status (). | |
764 | This function returns 1 if the inferior should not be resumed | |
765 | (i.e. there is another event pending). */ | |
0d06e24b | 766 | |
ee057212 | 767 | int target_follow_fork (int follow_child); |
c906108c SS |
768 | |
769 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
770 | occurs. These functions insert/remove an already-created |
771 | catchpoint for such events. */ | |
772 | ||
c906108c | 773 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 774 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 775 | |
c906108c | 776 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 777 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c | 778 | |
c906108c SS |
779 | /* Returns the number of exec events that are reported when a process |
780 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
781 | events are being reported. */ |
782 | ||
c906108c | 783 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 784 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c | 785 | |
c906108c | 786 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the |
0d06e24b JM |
787 | exit code of PID, if any. */ |
788 | ||
c906108c | 789 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 790 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
791 | |
792 | /* The debugger has completed a blocking wait() call. There is now | |
2146d243 | 793 | some process event that must be processed. This function should |
c906108c | 794 | be defined by those targets that require the debugger to perform |
0d06e24b | 795 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
796 | |
797 | /* The inferior process has died. Do what is right. */ | |
798 | ||
799 | #define target_mourn_inferior() \ | |
0d06e24b | 800 | (*current_target.to_mourn_inferior) () |
c906108c SS |
801 | |
802 | /* Does target have enough data to do a run or attach command? */ | |
803 | ||
804 | #define target_can_run(t) \ | |
0d06e24b | 805 | ((t)->to_can_run) () |
c906108c SS |
806 | |
807 | /* post process changes to signal handling in the inferior. */ | |
808 | ||
39f77062 KB |
809 | #define target_notice_signals(ptid) \ |
810 | (*current_target.to_notice_signals) (ptid) | |
c906108c SS |
811 | |
812 | /* Check to see if a thread is still alive. */ | |
813 | ||
39f77062 KB |
814 | #define target_thread_alive(ptid) \ |
815 | (*current_target.to_thread_alive) (ptid) | |
c906108c | 816 | |
b83266a0 SS |
817 | /* Query for new threads and add them to the thread list. */ |
818 | ||
819 | #define target_find_new_threads() \ | |
0d06e24b | 820 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 821 | |
0d06e24b JM |
822 | /* Make target stop in a continuable fashion. (For instance, under |
823 | Unix, this should act like SIGSTOP). This function is normally | |
824 | used by GUIs to implement a stop button. */ | |
c906108c SS |
825 | |
826 | #define target_stop current_target.to_stop | |
827 | ||
96baa820 JM |
828 | /* Send the specified COMMAND to the target's monitor |
829 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 830 | placed in OUTBUF. */ |
96baa820 JM |
831 | |
832 | #define target_rcmd(command, outbuf) \ | |
833 | (*current_target.to_rcmd) (command, outbuf) | |
834 | ||
835 | ||
c906108c | 836 | /* Get the symbol information for a breakpointable routine called when |
2146d243 | 837 | an exception event occurs. |
c906108c SS |
838 | Intended mainly for C++, and for those |
839 | platforms/implementations where such a callback mechanism is available, | |
840 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 841 | different mechanisms for debugging exceptions. */ |
c906108c SS |
842 | |
843 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 844 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 845 | |
0d06e24b | 846 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 847 | |
c906108c | 848 | #define target_get_current_exception_event() \ |
0d06e24b | 849 | (*current_target.to_get_current_exception_event) () |
c906108c | 850 | |
c906108c SS |
851 | /* Does the target include all of memory, or only part of it? This |
852 | determines whether we look up the target chain for other parts of | |
853 | memory if this target can't satisfy a request. */ | |
854 | ||
855 | #define target_has_all_memory \ | |
0d06e24b | 856 | (current_target.to_has_all_memory) |
c906108c SS |
857 | |
858 | /* Does the target include memory? (Dummy targets don't.) */ | |
859 | ||
860 | #define target_has_memory \ | |
0d06e24b | 861 | (current_target.to_has_memory) |
c906108c SS |
862 | |
863 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
864 | we start a process.) */ | |
c5aa993b | 865 | |
c906108c | 866 | #define target_has_stack \ |
0d06e24b | 867 | (current_target.to_has_stack) |
c906108c SS |
868 | |
869 | /* Does the target have registers? (Exec files don't.) */ | |
870 | ||
871 | #define target_has_registers \ | |
0d06e24b | 872 | (current_target.to_has_registers) |
c906108c SS |
873 | |
874 | /* Does the target have execution? Can we make it jump (through | |
875 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
876 | way, it needs to check whether an inferior actually exists. | |
877 | remote-udi.c and probably other targets can be the current target | |
878 | when the inferior doesn't actually exist at the moment. Right now | |
879 | this just tells us whether this target is *capable* of execution. */ | |
880 | ||
881 | #define target_has_execution \ | |
0d06e24b | 882 | (current_target.to_has_execution) |
c906108c SS |
883 | |
884 | /* Can the target support the debugger control of thread execution? | |
885 | a) Can it lock the thread scheduler? | |
886 | b) Can it switch the currently running thread? */ | |
887 | ||
888 | #define target_can_lock_scheduler \ | |
0d06e24b | 889 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
890 | |
891 | #define target_can_switch_threads \ | |
0d06e24b | 892 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 893 | |
6426a772 JM |
894 | /* Can the target support asynchronous execution? */ |
895 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
896 | ||
897 | /* Is the target in asynchronous execution mode? */ | |
898 | #define target_is_async_p() (current_target.to_is_async_p()) | |
899 | ||
900 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
901 | #define target_async(CALLBACK,CONTEXT) \ |
902 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 903 | |
04714b91 AC |
904 | /* This is to be used ONLY within call_function_by_hand(). It provides |
905 | a workaround, to have inferior function calls done in sychronous | |
906 | mode, even though the target is asynchronous. After | |
ed9a39eb JM |
907 | target_async_mask(0) is called, calls to target_can_async_p() will |
908 | return FALSE , so that target_resume() will not try to start the | |
909 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
910 | restore the previous nature of the target, by calling | |
911 | target_async_mask(1). After that, target_can_async_p() will return | |
04714b91 | 912 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. |
ed9a39eb JM |
913 | |
914 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
915 | the turning async on and off to the single execution commands, | |
0d06e24b | 916 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
917 | |
918 | #define target_async_mask_value \ | |
0d06e24b | 919 | (current_target.to_async_mask_value) |
ed9a39eb | 920 | |
2146d243 | 921 | extern int target_async_mask (int mask); |
ed9a39eb | 922 | |
c906108c SS |
923 | /* Converts a process id to a string. Usually, the string just contains |
924 | `process xyz', but on some systems it may contain | |
925 | `process xyz thread abc'. */ | |
926 | ||
ed9a39eb JM |
927 | #undef target_pid_to_str |
928 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
929 | |
930 | #ifndef target_tid_to_str | |
931 | #define target_tid_to_str(PID) \ | |
0d06e24b | 932 | target_pid_to_str (PID) |
39f77062 | 933 | extern char *normal_pid_to_str (ptid_t ptid); |
c906108c | 934 | #endif |
c5aa993b | 935 | |
0d06e24b JM |
936 | /* Return a short string describing extra information about PID, |
937 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
938 | is okay. */ | |
939 | ||
940 | #define target_extra_thread_info(TP) \ | |
941 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 942 | |
11cf8741 JM |
943 | /* |
944 | * New Objfile Event Hook: | |
945 | * | |
946 | * Sometimes a GDB component wants to get notified whenever a new | |
2146d243 | 947 | * objfile is loaded. Mainly this is used by thread-debugging |
11cf8741 JM |
948 | * implementations that need to know when symbols for the target |
949 | * thread implemenation are available. | |
950 | * | |
951 | * The old way of doing this is to define a macro 'target_new_objfile' | |
952 | * that points to the function that you want to be called on every | |
953 | * objfile/shlib load. | |
9a4105ab AC |
954 | |
955 | The new way is to grab the function pointer, | |
956 | 'deprecated_target_new_objfile_hook', and point it to the function | |
957 | that you want to be called on every objfile/shlib load. | |
958 | ||
959 | If multiple clients are willing to be cooperative, they can each | |
960 | save a pointer to the previous value of | |
961 | deprecated_target_new_objfile_hook before modifying it, and arrange | |
962 | for their function to call the previous function in the chain. In | |
963 | that way, multiple clients can receive this notification (something | |
964 | like with signal handlers). */ | |
965 | ||
966 | extern void (*deprecated_target_new_objfile_hook) (struct objfile *); | |
c906108c SS |
967 | |
968 | #ifndef target_pid_or_tid_to_str | |
969 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 970 | target_pid_to_str (ID) |
c906108c SS |
971 | #endif |
972 | ||
973 | /* Attempts to find the pathname of the executable file | |
974 | that was run to create a specified process. | |
975 | ||
976 | The process PID must be stopped when this operation is used. | |
c5aa993b | 977 | |
c906108c SS |
978 | If the executable file cannot be determined, NULL is returned. |
979 | ||
980 | Else, a pointer to a character string containing the pathname | |
981 | is returned. This string should be copied into a buffer by | |
982 | the client if the string will not be immediately used, or if | |
0d06e24b | 983 | it must persist. */ |
c906108c SS |
984 | |
985 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 986 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 987 | |
be4d1333 MS |
988 | /* |
989 | * Iterator function for target memory regions. | |
990 | * Calls a callback function once for each memory region 'mapped' | |
991 | * in the child process. Defined as a simple macro rather than | |
2146d243 | 992 | * as a function macro so that it can be tested for nullity. |
be4d1333 MS |
993 | */ |
994 | ||
995 | #define target_find_memory_regions(FUNC, DATA) \ | |
996 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
997 | ||
998 | /* | |
999 | * Compose corefile .note section. | |
1000 | */ | |
1001 | ||
1002 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
1003 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
1004 | ||
3f47be5c EZ |
1005 | /* Thread-local values. */ |
1006 | #define target_get_thread_local_address \ | |
1007 | (current_target.to_get_thread_local_address) | |
1008 | #define target_get_thread_local_address_p() \ | |
1009 | (target_get_thread_local_address != NULL) | |
1010 | ||
9d8a64cb | 1011 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
1012 | started. */ |
1013 | ||
1014 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
1015 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
1016 | #endif | |
1017 | ||
1018 | /* Hardware watchpoint interfaces. */ | |
1019 | ||
1020 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
1021 | write). */ | |
1022 | ||
1023 | #ifndef STOPPED_BY_WATCHPOINT | |
ccaa32c7 GS |
1024 | #define STOPPED_BY_WATCHPOINT(w) \ |
1025 | (*current_target.to_stopped_by_watchpoint) () | |
c906108c | 1026 | #endif |
7df1a324 KW |
1027 | |
1028 | /* Non-zero if we have continuable watchpoints */ | |
1029 | ||
1030 | #ifndef HAVE_CONTINUABLE_WATCHPOINT | |
1031 | #define HAVE_CONTINUABLE_WATCHPOINT \ | |
1032 | (current_target.to_have_continuable_watchpoint) | |
1033 | #endif | |
c906108c | 1034 | |
ccaa32c7 | 1035 | /* Provide defaults for hardware watchpoint functions. */ |
c906108c | 1036 | |
2146d243 | 1037 | /* If the *_hw_beakpoint functions have not been defined |
ccaa32c7 | 1038 | elsewhere use the definitions in the target vector. */ |
c906108c SS |
1039 | |
1040 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
1041 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
1042 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
1043 | (including this one?). OTHERTYPE is who knows what... */ | |
1044 | ||
ccaa32c7 GS |
1045 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
1046 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ | |
1047 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
1048 | #endif | |
c906108c | 1049 | |
e0d24f8d WZ |
1050 | #ifndef TARGET_REGION_OK_FOR_HW_WATCHPOINT |
1051 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr, len) \ | |
1052 | (*current_target.to_region_ok_for_hw_watchpoint) (addr, len) | |
1053 | #endif | |
1054 | ||
c906108c SS |
1055 | |
1056 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1057 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1058 | success, non-zero for failure. */ | |
1059 | ||
ccaa32c7 GS |
1060 | #ifndef target_insert_watchpoint |
1061 | #define target_insert_watchpoint(addr, len, type) \ | |
1062 | (*current_target.to_insert_watchpoint) (addr, len, type) | |
c906108c | 1063 | |
ccaa32c7 GS |
1064 | #define target_remove_watchpoint(addr, len, type) \ |
1065 | (*current_target.to_remove_watchpoint) (addr, len, type) | |
1066 | #endif | |
c906108c SS |
1067 | |
1068 | #ifndef target_insert_hw_breakpoint | |
8181d85f DJ |
1069 | #define target_insert_hw_breakpoint(bp_tgt) \ |
1070 | (*current_target.to_insert_hw_breakpoint) (bp_tgt) | |
ccaa32c7 | 1071 | |
8181d85f DJ |
1072 | #define target_remove_hw_breakpoint(bp_tgt) \ |
1073 | (*current_target.to_remove_hw_breakpoint) (bp_tgt) | |
c906108c SS |
1074 | #endif |
1075 | ||
4aa7a7f5 JJ |
1076 | extern int target_stopped_data_address_p (struct target_ops *); |
1077 | ||
c906108c | 1078 | #ifndef target_stopped_data_address |
4aa7a7f5 JJ |
1079 | #define target_stopped_data_address(target, x) \ |
1080 | (*target.to_stopped_data_address) (target, x) | |
1081 | #else | |
1082 | /* Horrible hack to get around existing macros :-(. */ | |
1083 | #define target_stopped_data_address_p(CURRENT_TARGET) (1) | |
c906108c SS |
1084 | #endif |
1085 | ||
c906108c SS |
1086 | /* This will only be defined by a target that supports catching vfork events, |
1087 | such as HP-UX. | |
1088 | ||
1089 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1090 | child process after it has exec'd, causes the parent process to resume as | |
1091 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1092 | define this to a function that prevents that from happening. */ |
c906108c SS |
1093 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1094 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1095 | #endif | |
1096 | ||
1097 | /* This will only be defined by a target that supports catching vfork events, | |
1098 | such as HP-UX. | |
1099 | ||
1100 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1101 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1102 | vfork event will be delivered to us. */ |
1103 | ||
c906108c SS |
1104 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1105 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1106 | #endif | |
1107 | ||
1108 | /* Routines for maintenance of the target structures... | |
1109 | ||
1110 | add_target: Add a target to the list of all possible targets. | |
1111 | ||
1112 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1113 | targets, within its particular stratum of the stack. Result |
1114 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1115 | should warn user). | |
c906108c SS |
1116 | |
1117 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1118 | no matter where it is on the list. Returns 0 if no |
1119 | change, 1 if removed from stack. | |
c906108c | 1120 | |
c5aa993b | 1121 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1122 | |
a14ed312 | 1123 | extern void add_target (struct target_ops *); |
c906108c | 1124 | |
a14ed312 | 1125 | extern int push_target (struct target_ops *); |
c906108c | 1126 | |
a14ed312 | 1127 | extern int unpush_target (struct target_ops *); |
c906108c | 1128 | |
a14ed312 | 1129 | extern void target_preopen (int); |
c906108c | 1130 | |
a14ed312 | 1131 | extern void pop_target (void); |
c906108c SS |
1132 | |
1133 | /* Struct section_table maps address ranges to file sections. It is | |
1134 | mostly used with BFD files, but can be used without (e.g. for handling | |
1135 | raw disks, or files not in formats handled by BFD). */ | |
1136 | ||
c5aa993b JM |
1137 | struct section_table |
1138 | { | |
1139 | CORE_ADDR addr; /* Lowest address in section */ | |
1140 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1141 | |
7be0c536 | 1142 | struct bfd_section *the_bfd_section; |
c906108c | 1143 | |
c5aa993b JM |
1144 | bfd *bfd; /* BFD file pointer */ |
1145 | }; | |
c906108c | 1146 | |
8db32d44 AC |
1147 | /* Return the "section" containing the specified address. */ |
1148 | struct section_table *target_section_by_addr (struct target_ops *target, | |
1149 | CORE_ADDR addr); | |
1150 | ||
1151 | ||
c906108c SS |
1152 | /* From mem-break.c */ |
1153 | ||
8181d85f | 1154 | extern int memory_remove_breakpoint (struct bp_target_info *); |
c906108c | 1155 | |
8181d85f | 1156 | extern int memory_insert_breakpoint (struct bp_target_info *); |
c906108c | 1157 | |
8181d85f | 1158 | extern int default_memory_remove_breakpoint (struct bp_target_info *); |
917317f4 | 1159 | |
8181d85f | 1160 | extern int default_memory_insert_breakpoint (struct bp_target_info *); |
917317f4 | 1161 | |
c906108c SS |
1162 | |
1163 | /* From target.c */ | |
1164 | ||
a14ed312 | 1165 | extern void initialize_targets (void); |
c906108c | 1166 | |
a14ed312 | 1167 | extern void noprocess (void); |
c906108c | 1168 | |
a14ed312 | 1169 | extern void find_default_attach (char *, int); |
c906108c | 1170 | |
c27cda74 | 1171 | extern void find_default_create_inferior (char *, char *, char **, int); |
c906108c | 1172 | |
a14ed312 | 1173 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1174 | |
a14ed312 | 1175 | extern struct target_ops *find_core_target (void); |
6426a772 | 1176 | |
a14ed312 | 1177 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb | 1178 | |
570b8f7c AC |
1179 | extern int target_resize_to_sections (struct target_ops *target, |
1180 | int num_added); | |
07cd4b97 JB |
1181 | |
1182 | extern void remove_target_sections (bfd *abfd); | |
1183 | ||
c906108c SS |
1184 | \f |
1185 | /* Stuff that should be shared among the various remote targets. */ | |
1186 | ||
1187 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1188 | information (higher values, more information). */ | |
1189 | extern int remote_debug; | |
1190 | ||
1191 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1192 | extern int baud_rate; | |
1193 | /* Timeout limit for response from target. */ | |
1194 | extern int remote_timeout; | |
1195 | ||
c906108c SS |
1196 | \f |
1197 | /* Functions for helping to write a native target. */ | |
1198 | ||
1199 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1200 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1201 | |
c2d11a7d | 1202 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1203 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1204 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1205 | to the shorter target_signal_p() because it is far less ambigious. | |
1206 | In this context ``target_signal'' refers to GDB's internal | |
1207 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1208 | refers to the target operating system's signal. Confused? */ |
1209 | ||
c2d11a7d JM |
1210 | extern int target_signal_to_host_p (enum target_signal signo); |
1211 | ||
1212 | /* Convert between host signal numbers and enum target_signal's. | |
1213 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1214 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1215 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1216 | refering to the target operating system's signal numbering. | |
1217 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1218 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1219 | internal representation of a target operating system's signal. */ |
1220 | ||
a14ed312 KB |
1221 | extern enum target_signal target_signal_from_host (int); |
1222 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1223 | |
1224 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1225 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1226 | |
1227 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1228 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1229 | \f |
1230 | /* Imported from machine dependent code */ | |
1231 | ||
c906108c | 1232 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1233 | void target_ignore (void); |
c906108c | 1234 | |
1df84f13 | 1235 | extern struct target_ops deprecated_child_ops; |
5ac10fd1 | 1236 | |
c5aa993b | 1237 | #endif /* !defined (TARGET_H) */ |