Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Interface between GDB and target environments, including files and processes |
b6ba6518 | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
be4d1333 | 3 | 2000, 2001, 2002 Free Software Foundation, Inc. |
c906108c SS |
4 | Contributed by Cygnus Support. Written by John Gilmore. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #if !defined (TARGET_H) | |
24 | #define TARGET_H | |
25 | ||
26 | /* This include file defines the interface between the main part | |
27 | of the debugger, and the part which is target-specific, or | |
28 | specific to the communications interface between us and the | |
29 | target. | |
30 | ||
31 | A TARGET is an interface between the debugger and a particular | |
32 | kind of file or process. Targets can be STACKED in STRATA, | |
33 | so that more than one target can potentially respond to a request. | |
34 | In particular, memory accesses will walk down the stack of targets | |
35 | until they find a target that is interested in handling that particular | |
36 | address. STRATA are artificial boundaries on the stack, within | |
37 | which particular kinds of targets live. Strata exist so that | |
38 | people don't get confused by pushing e.g. a process target and then | |
39 | a file target, and wondering why they can't see the current values | |
40 | of variables any more (the file target is handling them and they | |
41 | never get to the process target). So when you push a file target, | |
42 | it goes into the file stratum, which is always below the process | |
43 | stratum. */ | |
44 | ||
45 | #include "bfd.h" | |
46 | #include "symtab.h" | |
4930751a | 47 | #include "dcache.h" |
29e57380 | 48 | #include "memattr.h" |
c906108c | 49 | |
c5aa993b JM |
50 | enum strata |
51 | { | |
52 | dummy_stratum, /* The lowest of the low */ | |
53 | file_stratum, /* Executable files, etc */ | |
54 | core_stratum, /* Core dump files */ | |
55 | download_stratum, /* Downloading of remote targets */ | |
d4f3574e SS |
56 | process_stratum, /* Executing processes */ |
57 | thread_stratum /* Executing threads */ | |
c5aa993b | 58 | }; |
c906108c | 59 | |
c5aa993b JM |
60 | enum thread_control_capabilities |
61 | { | |
0d06e24b JM |
62 | tc_none = 0, /* Default: can't control thread execution. */ |
63 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
64 | tc_switch = 2 /* Can switch the running thread on demand. */ | |
c5aa993b | 65 | }; |
c906108c SS |
66 | |
67 | /* Stuff for target_wait. */ | |
68 | ||
69 | /* Generally, what has the program done? */ | |
c5aa993b JM |
70 | enum target_waitkind |
71 | { | |
72 | /* The program has exited. The exit status is in value.integer. */ | |
73 | TARGET_WAITKIND_EXITED, | |
c906108c | 74 | |
0d06e24b JM |
75 | /* The program has stopped with a signal. Which signal is in |
76 | value.sig. */ | |
c5aa993b | 77 | TARGET_WAITKIND_STOPPED, |
c906108c | 78 | |
c5aa993b JM |
79 | /* The program has terminated with a signal. Which signal is in |
80 | value.sig. */ | |
81 | TARGET_WAITKIND_SIGNALLED, | |
c906108c | 82 | |
c5aa993b JM |
83 | /* The program is letting us know that it dynamically loaded something |
84 | (e.g. it called load(2) on AIX). */ | |
85 | TARGET_WAITKIND_LOADED, | |
c906108c | 86 | |
0d06e24b JM |
87 | /* The program has forked. A "related" process' ID is in |
88 | value.related_pid. I.e., if the child forks, value.related_pid | |
89 | is the parent's ID. */ | |
90 | ||
c5aa993b | 91 | TARGET_WAITKIND_FORKED, |
c906108c | 92 | |
0d06e24b JM |
93 | /* The program has vforked. A "related" process's ID is in |
94 | value.related_pid. */ | |
95 | ||
c5aa993b | 96 | TARGET_WAITKIND_VFORKED, |
c906108c | 97 | |
0d06e24b JM |
98 | /* The program has exec'ed a new executable file. The new file's |
99 | pathname is pointed to by value.execd_pathname. */ | |
100 | ||
c5aa993b | 101 | TARGET_WAITKIND_EXECD, |
c906108c | 102 | |
0d06e24b JM |
103 | /* The program has entered or returned from a system call. On |
104 | HP-UX, this is used in the hardware watchpoint implementation. | |
105 | The syscall's unique integer ID number is in value.syscall_id */ | |
106 | ||
c5aa993b JM |
107 | TARGET_WAITKIND_SYSCALL_ENTRY, |
108 | TARGET_WAITKIND_SYSCALL_RETURN, | |
c906108c | 109 | |
c5aa993b JM |
110 | /* Nothing happened, but we stopped anyway. This perhaps should be handled |
111 | within target_wait, but I'm not sure target_wait should be resuming the | |
112 | inferior. */ | |
c4093a6a JM |
113 | TARGET_WAITKIND_SPURIOUS, |
114 | ||
8e7d2c16 DJ |
115 | /* An event has occured, but we should wait again. |
116 | Remote_async_wait() returns this when there is an event | |
c4093a6a JM |
117 | on the inferior, but the rest of the world is not interested in |
118 | it. The inferior has not stopped, but has just sent some output | |
119 | to the console, for instance. In this case, we want to go back | |
120 | to the event loop and wait there for another event from the | |
121 | inferior, rather than being stuck in the remote_async_wait() | |
122 | function. This way the event loop is responsive to other events, | |
0d06e24b | 123 | like for instance the user typing. */ |
c4093a6a | 124 | TARGET_WAITKIND_IGNORE |
c906108c SS |
125 | }; |
126 | ||
c5aa993b JM |
127 | struct target_waitstatus |
128 | { | |
129 | enum target_waitkind kind; | |
130 | ||
131 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
132 | union | |
133 | { | |
134 | int integer; | |
135 | enum target_signal sig; | |
136 | int related_pid; | |
137 | char *execd_pathname; | |
138 | int syscall_id; | |
139 | } | |
140 | value; | |
141 | }; | |
c906108c | 142 | |
2acceee2 | 143 | /* Possible types of events that the inferior handler will have to |
0d06e24b | 144 | deal with. */ |
2acceee2 JM |
145 | enum inferior_event_type |
146 | { | |
0d06e24b | 147 | /* There is a request to quit the inferior, abandon it. */ |
2acceee2 JM |
148 | INF_QUIT_REQ, |
149 | /* Process a normal inferior event which will result in target_wait | |
0d06e24b | 150 | being called. */ |
2acceee2 | 151 | INF_REG_EVENT, |
0d06e24b | 152 | /* Deal with an error on the inferior. */ |
2acceee2 | 153 | INF_ERROR, |
0d06e24b | 154 | /* We are called because a timer went off. */ |
2acceee2 | 155 | INF_TIMER, |
0d06e24b | 156 | /* We are called to do stuff after the inferior stops. */ |
c2d11a7d JM |
157 | INF_EXEC_COMPLETE, |
158 | /* We are called to do some stuff after the inferior stops, but we | |
159 | are expected to reenter the proceed() and | |
160 | handle_inferior_event() functions. This is used only in case of | |
0d06e24b | 161 | 'step n' like commands. */ |
c2d11a7d | 162 | INF_EXEC_CONTINUE |
2acceee2 JM |
163 | }; |
164 | ||
c906108c | 165 | /* Return the string for a signal. */ |
a14ed312 | 166 | extern char *target_signal_to_string (enum target_signal); |
c906108c SS |
167 | |
168 | /* Return the name (SIGHUP, etc.) for a signal. */ | |
a14ed312 | 169 | extern char *target_signal_to_name (enum target_signal); |
c906108c SS |
170 | |
171 | /* Given a name (SIGHUP, etc.), return its signal. */ | |
a14ed312 | 172 | enum target_signal target_signal_from_name (char *); |
c906108c | 173 | \f |
c5aa993b | 174 | |
c906108c SS |
175 | /* If certain kinds of activity happen, target_wait should perform |
176 | callbacks. */ | |
177 | /* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible | |
0d06e24b | 178 | on TARGET_ACTIVITY_FD. */ |
c906108c SS |
179 | extern int target_activity_fd; |
180 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
507f3c78 | 181 | extern int (*target_activity_function) (void); |
c906108c | 182 | \f |
0d06e24b JM |
183 | struct thread_info; /* fwd decl for parameter list below: */ |
184 | ||
c906108c | 185 | struct target_ops |
c5aa993b JM |
186 | { |
187 | char *to_shortname; /* Name this target type */ | |
188 | char *to_longname; /* Name for printing */ | |
189 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 190 | newline, and starts with a one-line descrip- |
0d06e24b | 191 | tion (probably similar to to_longname). */ |
507f3c78 KB |
192 | void (*to_open) (char *, int); |
193 | void (*to_close) (int); | |
194 | void (*to_attach) (char *, int); | |
195 | void (*to_post_attach) (int); | |
507f3c78 | 196 | void (*to_detach) (char *, int); |
39f77062 KB |
197 | void (*to_resume) (ptid_t, int, enum target_signal); |
198 | ptid_t (*to_wait) (ptid_t, struct target_waitstatus *); | |
199 | void (*to_post_wait) (ptid_t, int); | |
507f3c78 KB |
200 | void (*to_fetch_registers) (int); |
201 | void (*to_store_registers) (int); | |
202 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
203 | |
204 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
205 | target address MEMADDR. If WRITE, transfer them to the target, else | |
206 | transfer them from the target. TARGET is the target from which we | |
207 | get this function. | |
208 | ||
209 | Return value, N, is one of the following: | |
210 | ||
211 | 0 means that we can't handle this. If errno has been set, it is the | |
212 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
213 | ||
214 | positive (call it N) means that we have transferred N bytes | |
215 | starting at MEMADDR. We might be able to handle more bytes | |
216 | beyond this length, but no promises. | |
217 | ||
218 | negative (call its absolute value N) means that we cannot | |
219 | transfer right at MEMADDR, but we could transfer at least | |
220 | something at MEMADDR + N. */ | |
221 | ||
507f3c78 | 222 | int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, |
29e57380 C |
223 | int len, int write, |
224 | struct mem_attrib *attrib, | |
225 | struct target_ops *target); | |
c906108c SS |
226 | |
227 | #if 0 | |
c5aa993b | 228 | /* Enable this after 4.12. */ |
c906108c | 229 | |
c5aa993b JM |
230 | /* Search target memory. Start at STARTADDR and take LEN bytes of |
231 | target memory, and them with MASK, and compare to DATA. If they | |
232 | match, set *ADDR_FOUND to the address we found it at, store the data | |
233 | we found at LEN bytes starting at DATA_FOUND, and return. If | |
234 | not, add INCREMENT to the search address and keep trying until | |
235 | the search address is outside of the range [LORANGE,HIRANGE). | |
c906108c | 236 | |
0d06e24b JM |
237 | If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and |
238 | return. */ | |
239 | ||
507f3c78 KB |
240 | void (*to_search) (int len, char *data, char *mask, |
241 | CORE_ADDR startaddr, int increment, | |
242 | CORE_ADDR lorange, CORE_ADDR hirange, | |
243 | CORE_ADDR * addr_found, char *data_found); | |
c906108c SS |
244 | |
245 | #define target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found) \ | |
0d06e24b JM |
246 | (*current_target.to_search) (len, data, mask, startaddr, increment, \ |
247 | lorange, hirange, addr_found, data_found) | |
c5aa993b JM |
248 | #endif /* 0 */ |
249 | ||
507f3c78 KB |
250 | void (*to_files_info) (struct target_ops *); |
251 | int (*to_insert_breakpoint) (CORE_ADDR, char *); | |
252 | int (*to_remove_breakpoint) (CORE_ADDR, char *); | |
ccaa32c7 GS |
253 | int (*to_can_use_hw_breakpoint) (int, int, int); |
254 | int (*to_insert_hw_breakpoint) (CORE_ADDR, char *); | |
255 | int (*to_remove_hw_breakpoint) (CORE_ADDR, char *); | |
256 | int (*to_remove_watchpoint) (CORE_ADDR, int, int); | |
257 | int (*to_insert_watchpoint) (CORE_ADDR, int, int); | |
258 | int (*to_stopped_by_watchpoint) (void); | |
7df1a324 | 259 | int to_have_continuable_watchpoint; |
ccaa32c7 GS |
260 | CORE_ADDR (*to_stopped_data_address) (void); |
261 | int (*to_region_size_ok_for_hw_watchpoint) (int); | |
507f3c78 KB |
262 | void (*to_terminal_init) (void); |
263 | void (*to_terminal_inferior) (void); | |
264 | void (*to_terminal_ours_for_output) (void); | |
265 | void (*to_terminal_ours) (void); | |
a790ad35 | 266 | void (*to_terminal_save_ours) (void); |
507f3c78 KB |
267 | void (*to_terminal_info) (char *, int); |
268 | void (*to_kill) (void); | |
269 | void (*to_load) (char *, int); | |
270 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
271 | void (*to_create_inferior) (char *, char *, char **); | |
39f77062 | 272 | void (*to_post_startup_inferior) (ptid_t); |
507f3c78 | 273 | void (*to_acknowledge_created_inferior) (int); |
507f3c78 KB |
274 | int (*to_insert_fork_catchpoint) (int); |
275 | int (*to_remove_fork_catchpoint) (int); | |
276 | int (*to_insert_vfork_catchpoint) (int); | |
277 | int (*to_remove_vfork_catchpoint) (int); | |
6604731b | 278 | int (*to_follow_fork) (int); |
507f3c78 KB |
279 | int (*to_insert_exec_catchpoint) (int); |
280 | int (*to_remove_exec_catchpoint) (int); | |
507f3c78 | 281 | int (*to_reported_exec_events_per_exec_call) (void); |
507f3c78 KB |
282 | int (*to_has_exited) (int, int, int *); |
283 | void (*to_mourn_inferior) (void); | |
284 | int (*to_can_run) (void); | |
39f77062 KB |
285 | void (*to_notice_signals) (ptid_t ptid); |
286 | int (*to_thread_alive) (ptid_t ptid); | |
507f3c78 | 287 | void (*to_find_new_threads) (void); |
39f77062 | 288 | char *(*to_pid_to_str) (ptid_t); |
507f3c78 KB |
289 | char *(*to_extra_thread_info) (struct thread_info *); |
290 | void (*to_stop) (void); | |
291 | int (*to_query) (int /*char */ , char *, char *, int *); | |
d9fcf2fb | 292 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
293 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
294 | exception_event_kind, | |
295 | int); | |
296 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
297 | char *(*to_pid_to_exec_file) (int pid); | |
c5aa993b | 298 | enum strata to_stratum; |
c5aa993b JM |
299 | int to_has_all_memory; |
300 | int to_has_memory; | |
301 | int to_has_stack; | |
302 | int to_has_registers; | |
303 | int to_has_execution; | |
304 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
305 | struct section_table |
306 | *to_sections; | |
307 | struct section_table | |
308 | *to_sections_end; | |
6426a772 JM |
309 | /* ASYNC target controls */ |
310 | int (*to_can_async_p) (void); | |
311 | int (*to_is_async_p) (void); | |
0d06e24b JM |
312 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
313 | void *context); | |
ed9a39eb | 314 | int to_async_mask_value; |
be4d1333 MS |
315 | int (*to_find_memory_regions) (int (*) (CORE_ADDR, |
316 | unsigned long, | |
317 | int, int, int, | |
318 | void *), | |
319 | void *); | |
320 | char * (*to_make_corefile_notes) (bfd *, int *); | |
3f47be5c EZ |
321 | |
322 | /* Return the thread-local address at OFFSET in the | |
323 | thread-local storage for the thread PTID and the shared library | |
324 | or executable file given by OBJFILE. If that block of | |
325 | thread-local storage hasn't been allocated yet, this function | |
326 | may return an error. */ | |
327 | CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid, | |
328 | struct objfile *objfile, | |
329 | CORE_ADDR offset); | |
330 | ||
c5aa993b | 331 | int to_magic; |
0d06e24b JM |
332 | /* Need sub-structure for target machine related rather than comm related? |
333 | */ | |
c5aa993b | 334 | }; |
c906108c SS |
335 | |
336 | /* Magic number for checking ops size. If a struct doesn't end with this | |
337 | number, somebody changed the declaration but didn't change all the | |
338 | places that initialize one. */ | |
339 | ||
340 | #define OPS_MAGIC 3840 | |
341 | ||
342 | /* The ops structure for our "current" target process. This should | |
343 | never be NULL. If there is no target, it points to the dummy_target. */ | |
344 | ||
c5aa993b | 345 | extern struct target_ops current_target; |
c906108c SS |
346 | |
347 | /* An item on the target stack. */ | |
348 | ||
349 | struct target_stack_item | |
c5aa993b JM |
350 | { |
351 | struct target_stack_item *next; | |
352 | struct target_ops *target_ops; | |
353 | }; | |
c906108c SS |
354 | |
355 | /* The target stack. */ | |
356 | ||
357 | extern struct target_stack_item *target_stack; | |
358 | ||
359 | /* Define easy words for doing these operations on our current target. */ | |
360 | ||
361 | #define target_shortname (current_target.to_shortname) | |
362 | #define target_longname (current_target.to_longname) | |
363 | ||
364 | /* The open routine takes the rest of the parameters from the command, | |
365 | and (if successful) pushes a new target onto the stack. | |
366 | Targets should supply this routine, if only to provide an error message. */ | |
0d06e24b | 367 | |
4930751a C |
368 | #define target_open(name, from_tty) \ |
369 | do { \ | |
370 | dcache_invalidate (target_dcache); \ | |
371 | (*current_target.to_open) (name, from_tty); \ | |
372 | } while (0) | |
c906108c SS |
373 | |
374 | /* Does whatever cleanup is required for a target that we are no longer | |
375 | going to be calling. Argument says whether we are quitting gdb and | |
376 | should not get hung in case of errors, or whether we want a clean | |
377 | termination even if it takes a while. This routine is automatically | |
378 | always called just before a routine is popped off the target stack. | |
379 | Closing file descriptors and freeing memory are typical things it should | |
380 | do. */ | |
381 | ||
382 | #define target_close(quitting) \ | |
0d06e24b | 383 | (*current_target.to_close) (quitting) |
c906108c SS |
384 | |
385 | /* Attaches to a process on the target side. Arguments are as passed | |
386 | to the `attach' command by the user. This routine can be called | |
387 | when the target is not on the target-stack, if the target_can_run | |
388 | routine returns 1; in that case, it must push itself onto the stack. | |
389 | Upon exit, the target should be ready for normal operations, and | |
390 | should be ready to deliver the status of the process immediately | |
391 | (without waiting) to an upcoming target_wait call. */ | |
392 | ||
393 | #define target_attach(args, from_tty) \ | |
0d06e24b | 394 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
395 | |
396 | /* The target_attach operation places a process under debugger control, | |
397 | and stops the process. | |
398 | ||
399 | This operation provides a target-specific hook that allows the | |
0d06e24b | 400 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 401 | #define target_post_attach(pid) \ |
0d06e24b | 402 | (*current_target.to_post_attach) (pid) |
c906108c | 403 | |
c906108c SS |
404 | /* Takes a program previously attached to and detaches it. |
405 | The program may resume execution (some targets do, some don't) and will | |
406 | no longer stop on signals, etc. We better not have left any breakpoints | |
407 | in the program or it'll die when it hits one. ARGS is arguments | |
408 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
409 | says whether to be verbose or not. */ | |
410 | ||
a14ed312 | 411 | extern void target_detach (char *, int); |
c906108c | 412 | |
39f77062 | 413 | /* Resume execution of the target process PTID. STEP says whether to |
c906108c SS |
414 | single-step or to run free; SIGGNAL is the signal to be given to |
415 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
416 | pass TARGET_SIGNAL_DEFAULT. */ | |
417 | ||
39f77062 | 418 | #define target_resume(ptid, step, siggnal) \ |
4930751a C |
419 | do { \ |
420 | dcache_invalidate(target_dcache); \ | |
39f77062 | 421 | (*current_target.to_resume) (ptid, step, siggnal); \ |
4930751a | 422 | } while (0) |
c906108c | 423 | |
b5a2688f AC |
424 | /* Wait for process pid to do something. PTID = -1 to wait for any |
425 | pid to do something. Return pid of child, or -1 in case of error; | |
c906108c | 426 | store status through argument pointer STATUS. Note that it is |
b5a2688f | 427 | _NOT_ OK to throw_exception() out of target_wait() without popping |
c906108c SS |
428 | the debugging target from the stack; GDB isn't prepared to get back |
429 | to the prompt with a debugging target but without the frame cache, | |
430 | stop_pc, etc., set up. */ | |
431 | ||
39f77062 KB |
432 | #define target_wait(ptid, status) \ |
433 | (*current_target.to_wait) (ptid, status) | |
c906108c SS |
434 | |
435 | /* The target_wait operation waits for a process event to occur, and | |
436 | thereby stop the process. | |
437 | ||
438 | On some targets, certain events may happen in sequences. gdb's | |
439 | correct response to any single event of such a sequence may require | |
440 | knowledge of what earlier events in the sequence have been seen. | |
441 | ||
442 | This operation provides a target-specific hook that allows the | |
0d06e24b | 443 | necessary bookkeeping to be performed to track such sequences. */ |
c906108c | 444 | |
39f77062 KB |
445 | #define target_post_wait(ptid, status) \ |
446 | (*current_target.to_post_wait) (ptid, status) | |
c906108c | 447 | |
17dee195 | 448 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
449 | |
450 | #define target_fetch_registers(regno) \ | |
0d06e24b | 451 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
452 | |
453 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
454 | It can store as many registers as it wants to, so target_prepare_to_store | |
455 | must have been previously called. Calls error() if there are problems. */ | |
456 | ||
457 | #define target_store_registers(regs) \ | |
0d06e24b | 458 | (*current_target.to_store_registers) (regs) |
c906108c SS |
459 | |
460 | /* Get ready to modify the registers array. On machines which store | |
461 | individual registers, this doesn't need to do anything. On machines | |
462 | which store all the registers in one fell swoop, this makes sure | |
463 | that REGISTERS contains all the registers from the program being | |
464 | debugged. */ | |
465 | ||
466 | #define target_prepare_to_store() \ | |
0d06e24b | 467 | (*current_target.to_prepare_to_store) () |
c906108c | 468 | |
4930751a C |
469 | extern DCACHE *target_dcache; |
470 | ||
29e57380 C |
471 | extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
472 | struct mem_attrib *attrib); | |
4930751a | 473 | |
a14ed312 | 474 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 475 | |
a14ed312 | 476 | extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 477 | |
4930751a | 478 | extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 479 | |
29e57380 C |
480 | extern int xfer_memory (CORE_ADDR, char *, int, int, |
481 | struct mem_attrib *, struct target_ops *); | |
c906108c | 482 | |
29e57380 C |
483 | extern int child_xfer_memory (CORE_ADDR, char *, int, int, |
484 | struct mem_attrib *, struct target_ops *); | |
c906108c | 485 | |
917317f4 JM |
486 | /* Make a single attempt at transfering LEN bytes. On a successful |
487 | transfer, the number of bytes actually transfered is returned and | |
488 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
489 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 490 | non-zero error indication. */ |
917317f4 | 491 | |
570b8f7c AC |
492 | extern int target_read_memory_partial (CORE_ADDR addr, char *buf, int len, |
493 | int *err); | |
917317f4 | 494 | |
570b8f7c AC |
495 | extern int target_write_memory_partial (CORE_ADDR addr, char *buf, int len, |
496 | int *err); | |
917317f4 | 497 | |
a14ed312 | 498 | extern char *child_pid_to_exec_file (int); |
c906108c | 499 | |
a14ed312 | 500 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
501 | |
502 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 503 | extern void child_post_attach (int); |
c906108c SS |
504 | #endif |
505 | ||
39f77062 | 506 | extern void child_post_wait (ptid_t, int); |
c906108c | 507 | |
39f77062 | 508 | extern void child_post_startup_inferior (ptid_t); |
c906108c | 509 | |
a14ed312 | 510 | extern void child_acknowledge_created_inferior (int); |
c906108c | 511 | |
a14ed312 | 512 | extern int child_insert_fork_catchpoint (int); |
c906108c | 513 | |
a14ed312 | 514 | extern int child_remove_fork_catchpoint (int); |
c906108c | 515 | |
a14ed312 | 516 | extern int child_insert_vfork_catchpoint (int); |
c906108c | 517 | |
a14ed312 | 518 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 519 | |
a14ed312 | 520 | extern void child_acknowledge_created_inferior (int); |
c906108c | 521 | |
6604731b | 522 | extern int child_follow_fork (int); |
c906108c | 523 | |
a14ed312 | 524 | extern int child_insert_exec_catchpoint (int); |
c906108c | 525 | |
a14ed312 | 526 | extern int child_remove_exec_catchpoint (int); |
c906108c | 527 | |
a14ed312 | 528 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 529 | |
a14ed312 | 530 | extern int child_has_exited (int, int, int *); |
c906108c | 531 | |
39f77062 | 532 | extern int child_thread_alive (ptid_t); |
c906108c | 533 | |
47932f85 DJ |
534 | /* From infrun.c. */ |
535 | ||
536 | extern int inferior_has_forked (int pid, int *child_pid); | |
537 | ||
538 | extern int inferior_has_vforked (int pid, int *child_pid); | |
539 | ||
540 | extern int inferior_has_execd (int pid, char **execd_pathname); | |
541 | ||
c906108c SS |
542 | /* From exec.c */ |
543 | ||
a14ed312 | 544 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
545 | |
546 | /* Print a line about the current target. */ | |
547 | ||
548 | #define target_files_info() \ | |
0d06e24b | 549 | (*current_target.to_files_info) (¤t_target) |
c906108c SS |
550 | |
551 | /* Insert a breakpoint at address ADDR in the target machine. | |
552 | SAVE is a pointer to memory allocated for saving the | |
553 | target contents. It is guaranteed by the caller to be long enough | |
554 | to save "sizeof BREAKPOINT" bytes. Result is 0 for success, or | |
555 | an errno value. */ | |
556 | ||
557 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 558 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
559 | |
560 | /* Remove a breakpoint at address ADDR in the target machine. | |
561 | SAVE is a pointer to the same save area | |
562 | that was previously passed to target_insert_breakpoint. | |
563 | Result is 0 for success, or an errno value. */ | |
564 | ||
565 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 566 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
567 | |
568 | /* Initialize the terminal settings we record for the inferior, | |
569 | before we actually run the inferior. */ | |
570 | ||
571 | #define target_terminal_init() \ | |
0d06e24b | 572 | (*current_target.to_terminal_init) () |
c906108c SS |
573 | |
574 | /* Put the inferior's terminal settings into effect. | |
575 | This is preparation for starting or resuming the inferior. */ | |
576 | ||
577 | #define target_terminal_inferior() \ | |
0d06e24b | 578 | (*current_target.to_terminal_inferior) () |
c906108c SS |
579 | |
580 | /* Put some of our terminal settings into effect, | |
581 | enough to get proper results from our output, | |
582 | but do not change into or out of RAW mode | |
583 | so that no input is discarded. | |
584 | ||
585 | After doing this, either terminal_ours or terminal_inferior | |
586 | should be called to get back to a normal state of affairs. */ | |
587 | ||
588 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 589 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
590 | |
591 | /* Put our terminal settings into effect. | |
592 | First record the inferior's terminal settings | |
593 | so they can be restored properly later. */ | |
594 | ||
595 | #define target_terminal_ours() \ | |
0d06e24b | 596 | (*current_target.to_terminal_ours) () |
c906108c | 597 | |
a790ad35 SC |
598 | /* Save our terminal settings. |
599 | This is called from TUI after entering or leaving the curses | |
600 | mode. Since curses modifies our terminal this call is here | |
601 | to take this change into account. */ | |
602 | ||
603 | #define target_terminal_save_ours() \ | |
604 | (*current_target.to_terminal_save_ours) () | |
605 | ||
c906108c SS |
606 | /* Print useful information about our terminal status, if such a thing |
607 | exists. */ | |
608 | ||
609 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 610 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
611 | |
612 | /* Kill the inferior process. Make it go away. */ | |
613 | ||
614 | #define target_kill() \ | |
0d06e24b | 615 | (*current_target.to_kill) () |
c906108c | 616 | |
0d06e24b JM |
617 | /* Load an executable file into the target process. This is expected |
618 | to not only bring new code into the target process, but also to | |
619 | update GDB's symbol tables to match. */ | |
c906108c | 620 | |
11cf8741 | 621 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
622 | |
623 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
624 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
625 | symbol should be returned. The result is 0 if successful, nonzero | |
626 | if the symbol does not exist in the target environment. This | |
627 | function should not call error() if communication with the target | |
628 | is interrupted, since it is called from symbol reading, but should | |
629 | return nonzero, possibly doing a complain(). */ | |
c906108c | 630 | |
0d06e24b JM |
631 | #define target_lookup_symbol(name, addrp) \ |
632 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c | 633 | |
39f77062 | 634 | /* Start an inferior process and set inferior_ptid to its pid. |
c906108c SS |
635 | EXEC_FILE is the file to run. |
636 | ALLARGS is a string containing the arguments to the program. | |
637 | ENV is the environment vector to pass. Errors reported with error(). | |
638 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 639 | |
c906108c | 640 | #define target_create_inferior(exec_file, args, env) \ |
0d06e24b | 641 | (*current_target.to_create_inferior) (exec_file, args, env) |
c906108c SS |
642 | |
643 | ||
644 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
645 | notification of inferior events such as fork and vork immediately | |
646 | after the inferior is created. (This because of how gdb gets an | |
647 | inferior created via invoking a shell to do it. In such a scenario, | |
648 | if the shell init file has commands in it, the shell will fork and | |
649 | exec for each of those commands, and we will see each such fork | |
650 | event. Very bad.) | |
c5aa993b | 651 | |
0d06e24b JM |
652 | Such targets will supply an appropriate definition for this function. */ |
653 | ||
39f77062 KB |
654 | #define target_post_startup_inferior(ptid) \ |
655 | (*current_target.to_post_startup_inferior) (ptid) | |
c906108c SS |
656 | |
657 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
658 | some synchronization between gdb and the new inferior process, PID. */ |
659 | ||
c906108c | 660 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 661 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c | 662 | |
0d06e24b JM |
663 | /* On some targets, we can catch an inferior fork or vfork event when |
664 | it occurs. These functions insert/remove an already-created | |
665 | catchpoint for such events. */ | |
c906108c | 666 | |
c906108c | 667 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 668 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
669 | |
670 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 671 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
672 | |
673 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 674 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
675 | |
676 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 677 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c | 678 | |
6604731b DJ |
679 | /* If the inferior forks or vforks, this function will be called at |
680 | the next resume in order to perform any bookkeeping and fiddling | |
681 | necessary to continue debugging either the parent or child, as | |
682 | requested, and releasing the other. Information about the fork | |
683 | or vfork event is available via get_last_target_status (). | |
684 | This function returns 1 if the inferior should not be resumed | |
685 | (i.e. there is another event pending). */ | |
0d06e24b | 686 | |
6604731b DJ |
687 | #define target_follow_fork(follow_child) \ |
688 | (*current_target.to_follow_fork) (follow_child) | |
c906108c SS |
689 | |
690 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
691 | occurs. These functions insert/remove an already-created |
692 | catchpoint for such events. */ | |
693 | ||
c906108c | 694 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 695 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 696 | |
c906108c | 697 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 698 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c | 699 | |
c906108c SS |
700 | /* Returns the number of exec events that are reported when a process |
701 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
702 | events are being reported. */ |
703 | ||
c906108c | 704 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 705 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c | 706 | |
c906108c | 707 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the |
0d06e24b JM |
708 | exit code of PID, if any. */ |
709 | ||
c906108c | 710 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 711 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
712 | |
713 | /* The debugger has completed a blocking wait() call. There is now | |
0d06e24b | 714 | some process event that must be processed. This function should |
c906108c | 715 | be defined by those targets that require the debugger to perform |
0d06e24b | 716 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
717 | |
718 | /* The inferior process has died. Do what is right. */ | |
719 | ||
720 | #define target_mourn_inferior() \ | |
0d06e24b | 721 | (*current_target.to_mourn_inferior) () |
c906108c SS |
722 | |
723 | /* Does target have enough data to do a run or attach command? */ | |
724 | ||
725 | #define target_can_run(t) \ | |
0d06e24b | 726 | ((t)->to_can_run) () |
c906108c SS |
727 | |
728 | /* post process changes to signal handling in the inferior. */ | |
729 | ||
39f77062 KB |
730 | #define target_notice_signals(ptid) \ |
731 | (*current_target.to_notice_signals) (ptid) | |
c906108c SS |
732 | |
733 | /* Check to see if a thread is still alive. */ | |
734 | ||
39f77062 KB |
735 | #define target_thread_alive(ptid) \ |
736 | (*current_target.to_thread_alive) (ptid) | |
c906108c | 737 | |
b83266a0 SS |
738 | /* Query for new threads and add them to the thread list. */ |
739 | ||
740 | #define target_find_new_threads() \ | |
0d06e24b | 741 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 742 | |
0d06e24b JM |
743 | /* Make target stop in a continuable fashion. (For instance, under |
744 | Unix, this should act like SIGSTOP). This function is normally | |
745 | used by GUIs to implement a stop button. */ | |
c906108c SS |
746 | |
747 | #define target_stop current_target.to_stop | |
748 | ||
749 | /* Queries the target side for some information. The first argument is a | |
750 | letter specifying the type of the query, which is used to determine who | |
751 | should process it. The second argument is a string that specifies which | |
752 | information is desired and the third is a buffer that carries back the | |
753 | response from the target side. The fourth parameter is the size of the | |
0d06e24b | 754 | output buffer supplied. */ |
c5aa993b | 755 | |
c906108c | 756 | #define target_query(query_type, query, resp_buffer, bufffer_size) \ |
0d06e24b | 757 | (*current_target.to_query) (query_type, query, resp_buffer, bufffer_size) |
c906108c | 758 | |
96baa820 JM |
759 | /* Send the specified COMMAND to the target's monitor |
760 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 761 | placed in OUTBUF. */ |
96baa820 JM |
762 | |
763 | #define target_rcmd(command, outbuf) \ | |
764 | (*current_target.to_rcmd) (command, outbuf) | |
765 | ||
766 | ||
c906108c SS |
767 | /* Get the symbol information for a breakpointable routine called when |
768 | an exception event occurs. | |
769 | Intended mainly for C++, and for those | |
770 | platforms/implementations where such a callback mechanism is available, | |
771 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 772 | different mechanisms for debugging exceptions. */ |
c906108c SS |
773 | |
774 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 775 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 776 | |
0d06e24b | 777 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 778 | |
c906108c | 779 | #define target_get_current_exception_event() \ |
0d06e24b | 780 | (*current_target.to_get_current_exception_event) () |
c906108c | 781 | |
c906108c SS |
782 | /* Does the target include all of memory, or only part of it? This |
783 | determines whether we look up the target chain for other parts of | |
784 | memory if this target can't satisfy a request. */ | |
785 | ||
786 | #define target_has_all_memory \ | |
0d06e24b | 787 | (current_target.to_has_all_memory) |
c906108c SS |
788 | |
789 | /* Does the target include memory? (Dummy targets don't.) */ | |
790 | ||
791 | #define target_has_memory \ | |
0d06e24b | 792 | (current_target.to_has_memory) |
c906108c SS |
793 | |
794 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
795 | we start a process.) */ | |
c5aa993b | 796 | |
c906108c | 797 | #define target_has_stack \ |
0d06e24b | 798 | (current_target.to_has_stack) |
c906108c SS |
799 | |
800 | /* Does the target have registers? (Exec files don't.) */ | |
801 | ||
802 | #define target_has_registers \ | |
0d06e24b | 803 | (current_target.to_has_registers) |
c906108c SS |
804 | |
805 | /* Does the target have execution? Can we make it jump (through | |
806 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
807 | way, it needs to check whether an inferior actually exists. | |
808 | remote-udi.c and probably other targets can be the current target | |
809 | when the inferior doesn't actually exist at the moment. Right now | |
810 | this just tells us whether this target is *capable* of execution. */ | |
811 | ||
812 | #define target_has_execution \ | |
0d06e24b | 813 | (current_target.to_has_execution) |
c906108c SS |
814 | |
815 | /* Can the target support the debugger control of thread execution? | |
816 | a) Can it lock the thread scheduler? | |
817 | b) Can it switch the currently running thread? */ | |
818 | ||
819 | #define target_can_lock_scheduler \ | |
0d06e24b | 820 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
821 | |
822 | #define target_can_switch_threads \ | |
0d06e24b | 823 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 824 | |
6426a772 JM |
825 | /* Can the target support asynchronous execution? */ |
826 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
827 | ||
828 | /* Is the target in asynchronous execution mode? */ | |
829 | #define target_is_async_p() (current_target.to_is_async_p()) | |
830 | ||
831 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
832 | #define target_async(CALLBACK,CONTEXT) \ |
833 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 834 | |
ed9a39eb JM |
835 | /* This is to be used ONLY within run_stack_dummy(). It |
836 | provides a workaround, to have inferior function calls done in | |
837 | sychronous mode, even though the target is asynchronous. After | |
838 | target_async_mask(0) is called, calls to target_can_async_p() will | |
839 | return FALSE , so that target_resume() will not try to start the | |
840 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
841 | restore the previous nature of the target, by calling | |
842 | target_async_mask(1). After that, target_can_async_p() will return | |
843 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. | |
844 | ||
845 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
846 | the turning async on and off to the single execution commands, | |
0d06e24b | 847 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
848 | |
849 | #define target_async_mask_value \ | |
0d06e24b | 850 | (current_target.to_async_mask_value) |
ed9a39eb JM |
851 | |
852 | extern int target_async_mask (int mask); | |
853 | ||
a14ed312 | 854 | extern void target_link (char *, CORE_ADDR *); |
c906108c SS |
855 | |
856 | /* Converts a process id to a string. Usually, the string just contains | |
857 | `process xyz', but on some systems it may contain | |
858 | `process xyz thread abc'. */ | |
859 | ||
ed9a39eb JM |
860 | #undef target_pid_to_str |
861 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
862 | |
863 | #ifndef target_tid_to_str | |
864 | #define target_tid_to_str(PID) \ | |
0d06e24b | 865 | target_pid_to_str (PID) |
39f77062 | 866 | extern char *normal_pid_to_str (ptid_t ptid); |
c906108c | 867 | #endif |
c5aa993b | 868 | |
0d06e24b JM |
869 | /* Return a short string describing extra information about PID, |
870 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
871 | is okay. */ | |
872 | ||
873 | #define target_extra_thread_info(TP) \ | |
874 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 875 | |
11cf8741 JM |
876 | /* |
877 | * New Objfile Event Hook: | |
878 | * | |
879 | * Sometimes a GDB component wants to get notified whenever a new | |
880 | * objfile is loaded. Mainly this is used by thread-debugging | |
881 | * implementations that need to know when symbols for the target | |
882 | * thread implemenation are available. | |
883 | * | |
884 | * The old way of doing this is to define a macro 'target_new_objfile' | |
885 | * that points to the function that you want to be called on every | |
886 | * objfile/shlib load. | |
887 | * | |
888 | * The new way is to grab the function pointer, 'target_new_objfile_hook', | |
889 | * and point it to the function that you want to be called on every | |
890 | * objfile/shlib load. | |
891 | * | |
892 | * If multiple clients are willing to be cooperative, they can each | |
893 | * save a pointer to the previous value of target_new_objfile_hook | |
894 | * before modifying it, and arrange for their function to call the | |
895 | * previous function in the chain. In that way, multiple clients | |
896 | * can receive this notification (something like with signal handlers). | |
897 | */ | |
c906108c | 898 | |
507f3c78 | 899 | extern void (*target_new_objfile_hook) (struct objfile *); |
c906108c SS |
900 | |
901 | #ifndef target_pid_or_tid_to_str | |
902 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 903 | target_pid_to_str (ID) |
c906108c SS |
904 | #endif |
905 | ||
906 | /* Attempts to find the pathname of the executable file | |
907 | that was run to create a specified process. | |
908 | ||
909 | The process PID must be stopped when this operation is used. | |
c5aa993b | 910 | |
c906108c SS |
911 | If the executable file cannot be determined, NULL is returned. |
912 | ||
913 | Else, a pointer to a character string containing the pathname | |
914 | is returned. This string should be copied into a buffer by | |
915 | the client if the string will not be immediately used, or if | |
0d06e24b | 916 | it must persist. */ |
c906108c SS |
917 | |
918 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 919 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 920 | |
be4d1333 MS |
921 | /* |
922 | * Iterator function for target memory regions. | |
923 | * Calls a callback function once for each memory region 'mapped' | |
924 | * in the child process. Defined as a simple macro rather than | |
925 | * as a function macro so that it can be tested for nullity. | |
926 | */ | |
927 | ||
928 | #define target_find_memory_regions(FUNC, DATA) \ | |
929 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
930 | ||
931 | /* | |
932 | * Compose corefile .note section. | |
933 | */ | |
934 | ||
935 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
936 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
937 | ||
3f47be5c EZ |
938 | /* Thread-local values. */ |
939 | #define target_get_thread_local_address \ | |
940 | (current_target.to_get_thread_local_address) | |
941 | #define target_get_thread_local_address_p() \ | |
942 | (target_get_thread_local_address != NULL) | |
943 | ||
9d8a64cb | 944 | /* Hook to call target-dependent code after reading in a new symbol table. */ |
c906108c SS |
945 | |
946 | #ifndef TARGET_SYMFILE_POSTREAD | |
947 | #define TARGET_SYMFILE_POSTREAD(OBJFILE) | |
948 | #endif | |
949 | ||
9d8a64cb | 950 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
951 | started. */ |
952 | ||
953 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
954 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
955 | #endif | |
956 | ||
957 | /* Hardware watchpoint interfaces. */ | |
958 | ||
959 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
960 | write). */ | |
961 | ||
962 | #ifndef STOPPED_BY_WATCHPOINT | |
ccaa32c7 GS |
963 | #define STOPPED_BY_WATCHPOINT(w) \ |
964 | (*current_target.to_stopped_by_watchpoint) () | |
c906108c | 965 | #endif |
7df1a324 KW |
966 | |
967 | /* Non-zero if we have continuable watchpoints */ | |
968 | ||
969 | #ifndef HAVE_CONTINUABLE_WATCHPOINT | |
970 | #define HAVE_CONTINUABLE_WATCHPOINT \ | |
971 | (current_target.to_have_continuable_watchpoint) | |
972 | #endif | |
c906108c SS |
973 | |
974 | /* HP-UX supplies these operations, which respectively disable and enable | |
975 | the memory page-protections that are used to implement hardware watchpoints | |
0d06e24b JM |
976 | on that platform. See wait_for_inferior's use of these. */ |
977 | ||
c906108c SS |
978 | #if !defined(TARGET_DISABLE_HW_WATCHPOINTS) |
979 | #define TARGET_DISABLE_HW_WATCHPOINTS(pid) | |
980 | #endif | |
981 | ||
982 | #if !defined(TARGET_ENABLE_HW_WATCHPOINTS) | |
983 | #define TARGET_ENABLE_HW_WATCHPOINTS(pid) | |
984 | #endif | |
985 | ||
ccaa32c7 | 986 | /* Provide defaults for hardware watchpoint functions. */ |
c906108c | 987 | |
ccaa32c7 GS |
988 | /* If the *_hw_beakpoint functions have not been defined |
989 | elsewhere use the definitions in the target vector. */ | |
c906108c SS |
990 | |
991 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
992 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
993 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
994 | (including this one?). OTHERTYPE is who knows what... */ | |
995 | ||
ccaa32c7 GS |
996 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
997 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ | |
998 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
999 | #endif | |
c906108c SS |
1000 | |
1001 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
1002 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \ | |
ccaa32c7 | 1003 | (*current_target.to_region_size_ok_for_hw_watchpoint) (byte_count) |
c906108c SS |
1004 | #endif |
1005 | ||
c906108c SS |
1006 | |
1007 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1008 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1009 | success, non-zero for failure. */ | |
1010 | ||
ccaa32c7 GS |
1011 | #ifndef target_insert_watchpoint |
1012 | #define target_insert_watchpoint(addr, len, type) \ | |
1013 | (*current_target.to_insert_watchpoint) (addr, len, type) | |
c906108c | 1014 | |
ccaa32c7 GS |
1015 | #define target_remove_watchpoint(addr, len, type) \ |
1016 | (*current_target.to_remove_watchpoint) (addr, len, type) | |
1017 | #endif | |
c906108c SS |
1018 | |
1019 | #ifndef target_insert_hw_breakpoint | |
ccaa32c7 GS |
1020 | #define target_insert_hw_breakpoint(addr, save) \ |
1021 | (*current_target.to_insert_hw_breakpoint) (addr, save) | |
1022 | ||
1023 | #define target_remove_hw_breakpoint(addr, save) \ | |
1024 | (*current_target.to_remove_hw_breakpoint) (addr, save) | |
c906108c SS |
1025 | #endif |
1026 | ||
1027 | #ifndef target_stopped_data_address | |
ccaa32c7 GS |
1028 | #define target_stopped_data_address() \ |
1029 | (*current_target.to_stopped_data_address) () | |
c906108c SS |
1030 | #endif |
1031 | ||
1032 | /* If defined, then we need to decr pc by this much after a hardware break- | |
1033 | point. Presumably this overrides DECR_PC_AFTER_BREAK... */ | |
1034 | ||
1035 | #ifndef DECR_PC_AFTER_HW_BREAK | |
1036 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1037 | #endif | |
1038 | ||
1039 | /* Sometimes gdb may pick up what appears to be a valid target address | |
1040 | from a minimal symbol, but the value really means, essentially, | |
1041 | "This is an index into a table which is populated when the inferior | |
0d06e24b JM |
1042 | is run. Therefore, do not attempt to use this as a PC." */ |
1043 | ||
c906108c SS |
1044 | #if !defined(PC_REQUIRES_RUN_BEFORE_USE) |
1045 | #define PC_REQUIRES_RUN_BEFORE_USE(pc) (0) | |
1046 | #endif | |
1047 | ||
1048 | /* This will only be defined by a target that supports catching vfork events, | |
1049 | such as HP-UX. | |
1050 | ||
1051 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1052 | child process after it has exec'd, causes the parent process to resume as | |
1053 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1054 | define this to a function that prevents that from happening. */ |
c906108c SS |
1055 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1056 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1057 | #endif | |
1058 | ||
1059 | /* This will only be defined by a target that supports catching vfork events, | |
1060 | such as HP-UX. | |
1061 | ||
1062 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1063 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1064 | vfork event will be delivered to us. */ |
1065 | ||
c906108c SS |
1066 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1067 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1068 | #endif | |
1069 | ||
1070 | /* Routines for maintenance of the target structures... | |
1071 | ||
1072 | add_target: Add a target to the list of all possible targets. | |
1073 | ||
1074 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1075 | targets, within its particular stratum of the stack. Result |
1076 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1077 | should warn user). | |
c906108c SS |
1078 | |
1079 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1080 | no matter where it is on the list. Returns 0 if no |
1081 | change, 1 if removed from stack. | |
c906108c | 1082 | |
c5aa993b | 1083 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1084 | |
a14ed312 | 1085 | extern void add_target (struct target_ops *); |
c906108c | 1086 | |
a14ed312 | 1087 | extern int push_target (struct target_ops *); |
c906108c | 1088 | |
a14ed312 | 1089 | extern int unpush_target (struct target_ops *); |
c906108c | 1090 | |
a14ed312 | 1091 | extern void target_preopen (int); |
c906108c | 1092 | |
a14ed312 | 1093 | extern void pop_target (void); |
c906108c SS |
1094 | |
1095 | /* Struct section_table maps address ranges to file sections. It is | |
1096 | mostly used with BFD files, but can be used without (e.g. for handling | |
1097 | raw disks, or files not in formats handled by BFD). */ | |
1098 | ||
c5aa993b JM |
1099 | struct section_table |
1100 | { | |
1101 | CORE_ADDR addr; /* Lowest address in section */ | |
1102 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1103 | |
c5aa993b | 1104 | sec_ptr the_bfd_section; |
c906108c | 1105 | |
c5aa993b JM |
1106 | bfd *bfd; /* BFD file pointer */ |
1107 | }; | |
c906108c SS |
1108 | |
1109 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
1110 | Returns 0 if OK, 1 on error. */ | |
1111 | ||
570b8f7c AC |
1112 | extern int build_section_table (bfd *, struct section_table **, |
1113 | struct section_table **); | |
c906108c SS |
1114 | |
1115 | /* From mem-break.c */ | |
1116 | ||
a14ed312 | 1117 | extern int memory_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 1118 | |
a14ed312 | 1119 | extern int memory_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 1120 | |
a14ed312 | 1121 | extern int default_memory_remove_breakpoint (CORE_ADDR, char *); |
917317f4 | 1122 | |
a14ed312 | 1123 | extern int default_memory_insert_breakpoint (CORE_ADDR, char *); |
917317f4 | 1124 | |
f4f9705a AC |
1125 | extern const unsigned char *memory_breakpoint_from_pc (CORE_ADDR *pcptr, |
1126 | int *lenptr); | |
c906108c SS |
1127 | |
1128 | ||
1129 | /* From target.c */ | |
1130 | ||
a14ed312 | 1131 | extern void initialize_targets (void); |
c906108c | 1132 | |
a14ed312 | 1133 | extern void noprocess (void); |
c906108c | 1134 | |
a14ed312 | 1135 | extern void find_default_attach (char *, int); |
c906108c | 1136 | |
a14ed312 | 1137 | extern void find_default_create_inferior (char *, char *, char **); |
c906108c | 1138 | |
a14ed312 | 1139 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1140 | |
a14ed312 | 1141 | extern struct target_ops *find_core_target (void); |
6426a772 | 1142 | |
a14ed312 | 1143 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb | 1144 | |
570b8f7c AC |
1145 | extern int target_resize_to_sections (struct target_ops *target, |
1146 | int num_added); | |
07cd4b97 JB |
1147 | |
1148 | extern void remove_target_sections (bfd *abfd); | |
1149 | ||
c906108c SS |
1150 | \f |
1151 | /* Stuff that should be shared among the various remote targets. */ | |
1152 | ||
1153 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1154 | information (higher values, more information). */ | |
1155 | extern int remote_debug; | |
1156 | ||
1157 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1158 | extern int baud_rate; | |
1159 | /* Timeout limit for response from target. */ | |
1160 | extern int remote_timeout; | |
1161 | ||
c906108c SS |
1162 | \f |
1163 | /* Functions for helping to write a native target. */ | |
1164 | ||
1165 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1166 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1167 | |
c2d11a7d | 1168 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1169 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1170 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1171 | to the shorter target_signal_p() because it is far less ambigious. | |
1172 | In this context ``target_signal'' refers to GDB's internal | |
1173 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1174 | refers to the target operating system's signal. Confused? */ |
1175 | ||
c2d11a7d JM |
1176 | extern int target_signal_to_host_p (enum target_signal signo); |
1177 | ||
1178 | /* Convert between host signal numbers and enum target_signal's. | |
1179 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1180 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1181 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1182 | refering to the target operating system's signal numbering. | |
1183 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1184 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1185 | internal representation of a target operating system's signal. */ |
1186 | ||
a14ed312 KB |
1187 | extern enum target_signal target_signal_from_host (int); |
1188 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1189 | |
1190 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1191 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1192 | |
1193 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1194 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1195 | \f |
1196 | /* Imported from machine dependent code */ | |
1197 | ||
c906108c | 1198 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1199 | void target_ignore (void); |
c906108c | 1200 | |
c5aa993b | 1201 | #endif /* !defined (TARGET_H) */ |