Commit | Line | Data |
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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 | ||
da3331ec AC |
26 | struct objfile; |
27 | struct ui_file; | |
28 | struct mem_attrib; | |
29 | ||
c906108c SS |
30 | /* This include file defines the interface between the main part |
31 | of the debugger, and the part which is target-specific, or | |
32 | specific to the communications interface between us and the | |
33 | target. | |
34 | ||
35 | A TARGET is an interface between the debugger and a particular | |
36 | kind of file or process. Targets can be STACKED in STRATA, | |
37 | so that more than one target can potentially respond to a request. | |
38 | In particular, memory accesses will walk down the stack of targets | |
39 | until they find a target that is interested in handling that particular | |
40 | address. STRATA are artificial boundaries on the stack, within | |
41 | which particular kinds of targets live. Strata exist so that | |
42 | people don't get confused by pushing e.g. a process target and then | |
43 | a file target, and wondering why they can't see the current values | |
44 | of variables any more (the file target is handling them and they | |
45 | never get to the process target). So when you push a file target, | |
46 | it goes into the file stratum, which is always below the process | |
47 | stratum. */ | |
48 | ||
49 | #include "bfd.h" | |
50 | #include "symtab.h" | |
4930751a | 51 | #include "dcache.h" |
29e57380 | 52 | #include "memattr.h" |
c906108c | 53 | |
c5aa993b JM |
54 | enum strata |
55 | { | |
56 | dummy_stratum, /* The lowest of the low */ | |
57 | file_stratum, /* Executable files, etc */ | |
58 | core_stratum, /* Core dump files */ | |
59 | download_stratum, /* Downloading of remote targets */ | |
d4f3574e SS |
60 | process_stratum, /* Executing processes */ |
61 | thread_stratum /* Executing threads */ | |
c5aa993b | 62 | }; |
c906108c | 63 | |
c5aa993b JM |
64 | enum thread_control_capabilities |
65 | { | |
0d06e24b JM |
66 | tc_none = 0, /* Default: can't control thread execution. */ |
67 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
68 | tc_switch = 2 /* Can switch the running thread on demand. */ | |
c5aa993b | 69 | }; |
c906108c SS |
70 | |
71 | /* Stuff for target_wait. */ | |
72 | ||
73 | /* Generally, what has the program done? */ | |
c5aa993b JM |
74 | enum target_waitkind |
75 | { | |
76 | /* The program has exited. The exit status is in value.integer. */ | |
77 | TARGET_WAITKIND_EXITED, | |
c906108c | 78 | |
0d06e24b JM |
79 | /* The program has stopped with a signal. Which signal is in |
80 | value.sig. */ | |
c5aa993b | 81 | TARGET_WAITKIND_STOPPED, |
c906108c | 82 | |
c5aa993b JM |
83 | /* The program has terminated with a signal. Which signal is in |
84 | value.sig. */ | |
85 | TARGET_WAITKIND_SIGNALLED, | |
c906108c | 86 | |
c5aa993b JM |
87 | /* The program is letting us know that it dynamically loaded something |
88 | (e.g. it called load(2) on AIX). */ | |
89 | TARGET_WAITKIND_LOADED, | |
c906108c | 90 | |
0d06e24b JM |
91 | /* The program has forked. A "related" process' ID is in |
92 | value.related_pid. I.e., if the child forks, value.related_pid | |
93 | is the parent's ID. */ | |
94 | ||
c5aa993b | 95 | TARGET_WAITKIND_FORKED, |
c906108c | 96 | |
0d06e24b JM |
97 | /* The program has vforked. A "related" process's ID is in |
98 | value.related_pid. */ | |
99 | ||
c5aa993b | 100 | TARGET_WAITKIND_VFORKED, |
c906108c | 101 | |
0d06e24b JM |
102 | /* The program has exec'ed a new executable file. The new file's |
103 | pathname is pointed to by value.execd_pathname. */ | |
104 | ||
c5aa993b | 105 | TARGET_WAITKIND_EXECD, |
c906108c | 106 | |
0d06e24b JM |
107 | /* The program has entered or returned from a system call. On |
108 | HP-UX, this is used in the hardware watchpoint implementation. | |
109 | The syscall's unique integer ID number is in value.syscall_id */ | |
110 | ||
c5aa993b JM |
111 | TARGET_WAITKIND_SYSCALL_ENTRY, |
112 | TARGET_WAITKIND_SYSCALL_RETURN, | |
c906108c | 113 | |
c5aa993b JM |
114 | /* Nothing happened, but we stopped anyway. This perhaps should be handled |
115 | within target_wait, but I'm not sure target_wait should be resuming the | |
116 | inferior. */ | |
c4093a6a JM |
117 | TARGET_WAITKIND_SPURIOUS, |
118 | ||
8e7d2c16 DJ |
119 | /* An event has occured, but we should wait again. |
120 | Remote_async_wait() returns this when there is an event | |
c4093a6a JM |
121 | on the inferior, but the rest of the world is not interested in |
122 | it. The inferior has not stopped, but has just sent some output | |
123 | to the console, for instance. In this case, we want to go back | |
124 | to the event loop and wait there for another event from the | |
125 | inferior, rather than being stuck in the remote_async_wait() | |
126 | function. This way the event loop is responsive to other events, | |
0d06e24b | 127 | like for instance the user typing. */ |
c4093a6a | 128 | TARGET_WAITKIND_IGNORE |
c906108c SS |
129 | }; |
130 | ||
c5aa993b JM |
131 | struct target_waitstatus |
132 | { | |
133 | enum target_waitkind kind; | |
134 | ||
135 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
136 | union | |
137 | { | |
138 | int integer; | |
139 | enum target_signal sig; | |
140 | int related_pid; | |
141 | char *execd_pathname; | |
142 | int syscall_id; | |
143 | } | |
144 | value; | |
145 | }; | |
c906108c | 146 | |
2acceee2 | 147 | /* Possible types of events that the inferior handler will have to |
0d06e24b | 148 | deal with. */ |
2acceee2 JM |
149 | enum inferior_event_type |
150 | { | |
0d06e24b | 151 | /* There is a request to quit the inferior, abandon it. */ |
2acceee2 JM |
152 | INF_QUIT_REQ, |
153 | /* Process a normal inferior event which will result in target_wait | |
0d06e24b | 154 | being called. */ |
2acceee2 | 155 | INF_REG_EVENT, |
0d06e24b | 156 | /* Deal with an error on the inferior. */ |
2acceee2 | 157 | INF_ERROR, |
0d06e24b | 158 | /* We are called because a timer went off. */ |
2acceee2 | 159 | INF_TIMER, |
0d06e24b | 160 | /* We are called to do stuff after the inferior stops. */ |
c2d11a7d JM |
161 | INF_EXEC_COMPLETE, |
162 | /* We are called to do some stuff after the inferior stops, but we | |
163 | are expected to reenter the proceed() and | |
164 | handle_inferior_event() functions. This is used only in case of | |
0d06e24b | 165 | 'step n' like commands. */ |
c2d11a7d | 166 | INF_EXEC_CONTINUE |
2acceee2 JM |
167 | }; |
168 | ||
c906108c | 169 | /* Return the string for a signal. */ |
a14ed312 | 170 | extern char *target_signal_to_string (enum target_signal); |
c906108c SS |
171 | |
172 | /* Return the name (SIGHUP, etc.) for a signal. */ | |
a14ed312 | 173 | extern char *target_signal_to_name (enum target_signal); |
c906108c SS |
174 | |
175 | /* Given a name (SIGHUP, etc.), return its signal. */ | |
a14ed312 | 176 | enum target_signal target_signal_from_name (char *); |
c906108c | 177 | \f |
c5aa993b | 178 | |
c906108c SS |
179 | /* If certain kinds of activity happen, target_wait should perform |
180 | callbacks. */ | |
181 | /* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible | |
0d06e24b | 182 | on TARGET_ACTIVITY_FD. */ |
c906108c SS |
183 | extern int target_activity_fd; |
184 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
507f3c78 | 185 | extern int (*target_activity_function) (void); |
c906108c | 186 | \f |
0d06e24b JM |
187 | struct thread_info; /* fwd decl for parameter list below: */ |
188 | ||
c906108c | 189 | struct target_ops |
c5aa993b JM |
190 | { |
191 | char *to_shortname; /* Name this target type */ | |
192 | char *to_longname; /* Name for printing */ | |
193 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 194 | newline, and starts with a one-line descrip- |
0d06e24b | 195 | tion (probably similar to to_longname). */ |
507f3c78 KB |
196 | void (*to_open) (char *, int); |
197 | void (*to_close) (int); | |
198 | void (*to_attach) (char *, int); | |
199 | void (*to_post_attach) (int); | |
507f3c78 | 200 | void (*to_detach) (char *, int); |
39f77062 KB |
201 | void (*to_resume) (ptid_t, int, enum target_signal); |
202 | ptid_t (*to_wait) (ptid_t, struct target_waitstatus *); | |
203 | void (*to_post_wait) (ptid_t, int); | |
507f3c78 KB |
204 | void (*to_fetch_registers) (int); |
205 | void (*to_store_registers) (int); | |
206 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
207 | |
208 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
209 | target address MEMADDR. If WRITE, transfer them to the target, else | |
210 | transfer them from the target. TARGET is the target from which we | |
211 | get this function. | |
212 | ||
213 | Return value, N, is one of the following: | |
214 | ||
215 | 0 means that we can't handle this. If errno has been set, it is the | |
216 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
217 | ||
218 | positive (call it N) means that we have transferred N bytes | |
219 | starting at MEMADDR. We might be able to handle more bytes | |
220 | beyond this length, but no promises. | |
221 | ||
222 | negative (call its absolute value N) means that we cannot | |
223 | transfer right at MEMADDR, but we could transfer at least | |
224 | something at MEMADDR + N. */ | |
225 | ||
507f3c78 | 226 | int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, |
29e57380 C |
227 | int len, int write, |
228 | struct mem_attrib *attrib, | |
229 | struct target_ops *target); | |
c906108c SS |
230 | |
231 | #if 0 | |
c5aa993b | 232 | /* Enable this after 4.12. */ |
c906108c | 233 | |
c5aa993b JM |
234 | /* Search target memory. Start at STARTADDR and take LEN bytes of |
235 | target memory, and them with MASK, and compare to DATA. If they | |
236 | match, set *ADDR_FOUND to the address we found it at, store the data | |
237 | we found at LEN bytes starting at DATA_FOUND, and return. If | |
238 | not, add INCREMENT to the search address and keep trying until | |
239 | the search address is outside of the range [LORANGE,HIRANGE). | |
c906108c | 240 | |
0d06e24b JM |
241 | If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and |
242 | return. */ | |
243 | ||
507f3c78 KB |
244 | void (*to_search) (int len, char *data, char *mask, |
245 | CORE_ADDR startaddr, int increment, | |
246 | CORE_ADDR lorange, CORE_ADDR hirange, | |
247 | CORE_ADDR * addr_found, char *data_found); | |
c906108c SS |
248 | |
249 | #define target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found) \ | |
0d06e24b JM |
250 | (*current_target.to_search) (len, data, mask, startaddr, increment, \ |
251 | lorange, hirange, addr_found, data_found) | |
c5aa993b JM |
252 | #endif /* 0 */ |
253 | ||
507f3c78 KB |
254 | void (*to_files_info) (struct target_ops *); |
255 | int (*to_insert_breakpoint) (CORE_ADDR, char *); | |
256 | int (*to_remove_breakpoint) (CORE_ADDR, char *); | |
ccaa32c7 GS |
257 | int (*to_can_use_hw_breakpoint) (int, int, int); |
258 | int (*to_insert_hw_breakpoint) (CORE_ADDR, char *); | |
259 | int (*to_remove_hw_breakpoint) (CORE_ADDR, char *); | |
260 | int (*to_remove_watchpoint) (CORE_ADDR, int, int); | |
261 | int (*to_insert_watchpoint) (CORE_ADDR, int, int); | |
262 | int (*to_stopped_by_watchpoint) (void); | |
7df1a324 | 263 | int to_have_continuable_watchpoint; |
ccaa32c7 GS |
264 | CORE_ADDR (*to_stopped_data_address) (void); |
265 | int (*to_region_size_ok_for_hw_watchpoint) (int); | |
507f3c78 KB |
266 | void (*to_terminal_init) (void); |
267 | void (*to_terminal_inferior) (void); | |
268 | void (*to_terminal_ours_for_output) (void); | |
269 | void (*to_terminal_ours) (void); | |
a790ad35 | 270 | void (*to_terminal_save_ours) (void); |
507f3c78 KB |
271 | void (*to_terminal_info) (char *, int); |
272 | void (*to_kill) (void); | |
273 | void (*to_load) (char *, int); | |
274 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
275 | void (*to_create_inferior) (char *, char *, char **); | |
39f77062 | 276 | void (*to_post_startup_inferior) (ptid_t); |
507f3c78 | 277 | void (*to_acknowledge_created_inferior) (int); |
507f3c78 KB |
278 | int (*to_insert_fork_catchpoint) (int); |
279 | int (*to_remove_fork_catchpoint) (int); | |
280 | int (*to_insert_vfork_catchpoint) (int); | |
281 | int (*to_remove_vfork_catchpoint) (int); | |
6604731b | 282 | int (*to_follow_fork) (int); |
507f3c78 KB |
283 | int (*to_insert_exec_catchpoint) (int); |
284 | int (*to_remove_exec_catchpoint) (int); | |
507f3c78 | 285 | int (*to_reported_exec_events_per_exec_call) (void); |
507f3c78 KB |
286 | int (*to_has_exited) (int, int, int *); |
287 | void (*to_mourn_inferior) (void); | |
288 | int (*to_can_run) (void); | |
39f77062 KB |
289 | void (*to_notice_signals) (ptid_t ptid); |
290 | int (*to_thread_alive) (ptid_t ptid); | |
507f3c78 | 291 | void (*to_find_new_threads) (void); |
39f77062 | 292 | char *(*to_pid_to_str) (ptid_t); |
507f3c78 KB |
293 | char *(*to_extra_thread_info) (struct thread_info *); |
294 | void (*to_stop) (void); | |
295 | int (*to_query) (int /*char */ , char *, char *, int *); | |
d9fcf2fb | 296 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
297 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
298 | exception_event_kind, | |
299 | int); | |
300 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
301 | char *(*to_pid_to_exec_file) (int pid); | |
c5aa993b | 302 | enum strata to_stratum; |
c5aa993b JM |
303 | int to_has_all_memory; |
304 | int to_has_memory; | |
305 | int to_has_stack; | |
306 | int to_has_registers; | |
307 | int to_has_execution; | |
308 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
309 | struct section_table |
310 | *to_sections; | |
311 | struct section_table | |
312 | *to_sections_end; | |
6426a772 JM |
313 | /* ASYNC target controls */ |
314 | int (*to_can_async_p) (void); | |
315 | int (*to_is_async_p) (void); | |
0d06e24b JM |
316 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
317 | void *context); | |
ed9a39eb | 318 | int to_async_mask_value; |
be4d1333 MS |
319 | int (*to_find_memory_regions) (int (*) (CORE_ADDR, |
320 | unsigned long, | |
321 | int, int, int, | |
322 | void *), | |
323 | void *); | |
324 | char * (*to_make_corefile_notes) (bfd *, int *); | |
3f47be5c EZ |
325 | |
326 | /* Return the thread-local address at OFFSET in the | |
327 | thread-local storage for the thread PTID and the shared library | |
328 | or executable file given by OBJFILE. If that block of | |
329 | thread-local storage hasn't been allocated yet, this function | |
330 | may return an error. */ | |
331 | CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid, | |
332 | struct objfile *objfile, | |
333 | CORE_ADDR offset); | |
334 | ||
c5aa993b | 335 | int to_magic; |
0d06e24b JM |
336 | /* Need sub-structure for target machine related rather than comm related? |
337 | */ | |
c5aa993b | 338 | }; |
c906108c SS |
339 | |
340 | /* Magic number for checking ops size. If a struct doesn't end with this | |
341 | number, somebody changed the declaration but didn't change all the | |
342 | places that initialize one. */ | |
343 | ||
344 | #define OPS_MAGIC 3840 | |
345 | ||
346 | /* The ops structure for our "current" target process. This should | |
347 | never be NULL. If there is no target, it points to the dummy_target. */ | |
348 | ||
c5aa993b | 349 | extern struct target_ops current_target; |
c906108c SS |
350 | |
351 | /* An item on the target stack. */ | |
352 | ||
353 | struct target_stack_item | |
c5aa993b JM |
354 | { |
355 | struct target_stack_item *next; | |
356 | struct target_ops *target_ops; | |
357 | }; | |
c906108c SS |
358 | |
359 | /* The target stack. */ | |
360 | ||
361 | extern struct target_stack_item *target_stack; | |
362 | ||
363 | /* Define easy words for doing these operations on our current target. */ | |
364 | ||
365 | #define target_shortname (current_target.to_shortname) | |
366 | #define target_longname (current_target.to_longname) | |
367 | ||
368 | /* The open routine takes the rest of the parameters from the command, | |
369 | and (if successful) pushes a new target onto the stack. | |
370 | Targets should supply this routine, if only to provide an error message. */ | |
0d06e24b | 371 | |
4930751a C |
372 | #define target_open(name, from_tty) \ |
373 | do { \ | |
374 | dcache_invalidate (target_dcache); \ | |
375 | (*current_target.to_open) (name, from_tty); \ | |
376 | } while (0) | |
c906108c SS |
377 | |
378 | /* Does whatever cleanup is required for a target that we are no longer | |
379 | going to be calling. Argument says whether we are quitting gdb and | |
380 | should not get hung in case of errors, or whether we want a clean | |
381 | termination even if it takes a while. This routine is automatically | |
382 | always called just before a routine is popped off the target stack. | |
383 | Closing file descriptors and freeing memory are typical things it should | |
384 | do. */ | |
385 | ||
386 | #define target_close(quitting) \ | |
0d06e24b | 387 | (*current_target.to_close) (quitting) |
c906108c SS |
388 | |
389 | /* Attaches to a process on the target side. Arguments are as passed | |
390 | to the `attach' command by the user. This routine can be called | |
391 | when the target is not on the target-stack, if the target_can_run | |
392 | routine returns 1; in that case, it must push itself onto the stack. | |
393 | Upon exit, the target should be ready for normal operations, and | |
394 | should be ready to deliver the status of the process immediately | |
395 | (without waiting) to an upcoming target_wait call. */ | |
396 | ||
397 | #define target_attach(args, from_tty) \ | |
0d06e24b | 398 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
399 | |
400 | /* The target_attach operation places a process under debugger control, | |
401 | and stops the process. | |
402 | ||
403 | This operation provides a target-specific hook that allows the | |
0d06e24b | 404 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 405 | #define target_post_attach(pid) \ |
0d06e24b | 406 | (*current_target.to_post_attach) (pid) |
c906108c | 407 | |
c906108c SS |
408 | /* Takes a program previously attached to and detaches it. |
409 | The program may resume execution (some targets do, some don't) and will | |
410 | no longer stop on signals, etc. We better not have left any breakpoints | |
411 | in the program or it'll die when it hits one. ARGS is arguments | |
412 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
413 | says whether to be verbose or not. */ | |
414 | ||
a14ed312 | 415 | extern void target_detach (char *, int); |
c906108c | 416 | |
39f77062 | 417 | /* Resume execution of the target process PTID. STEP says whether to |
c906108c SS |
418 | single-step or to run free; SIGGNAL is the signal to be given to |
419 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
420 | pass TARGET_SIGNAL_DEFAULT. */ | |
421 | ||
39f77062 | 422 | #define target_resume(ptid, step, siggnal) \ |
4930751a C |
423 | do { \ |
424 | dcache_invalidate(target_dcache); \ | |
39f77062 | 425 | (*current_target.to_resume) (ptid, step, siggnal); \ |
4930751a | 426 | } while (0) |
c906108c | 427 | |
b5a2688f AC |
428 | /* Wait for process pid to do something. PTID = -1 to wait for any |
429 | pid to do something. Return pid of child, or -1 in case of error; | |
c906108c | 430 | store status through argument pointer STATUS. Note that it is |
b5a2688f | 431 | _NOT_ OK to throw_exception() out of target_wait() without popping |
c906108c SS |
432 | the debugging target from the stack; GDB isn't prepared to get back |
433 | to the prompt with a debugging target but without the frame cache, | |
434 | stop_pc, etc., set up. */ | |
435 | ||
39f77062 KB |
436 | #define target_wait(ptid, status) \ |
437 | (*current_target.to_wait) (ptid, status) | |
c906108c SS |
438 | |
439 | /* The target_wait operation waits for a process event to occur, and | |
440 | thereby stop the process. | |
441 | ||
442 | On some targets, certain events may happen in sequences. gdb's | |
443 | correct response to any single event of such a sequence may require | |
444 | knowledge of what earlier events in the sequence have been seen. | |
445 | ||
446 | This operation provides a target-specific hook that allows the | |
0d06e24b | 447 | necessary bookkeeping to be performed to track such sequences. */ |
c906108c | 448 | |
39f77062 KB |
449 | #define target_post_wait(ptid, status) \ |
450 | (*current_target.to_post_wait) (ptid, status) | |
c906108c | 451 | |
17dee195 | 452 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
453 | |
454 | #define target_fetch_registers(regno) \ | |
0d06e24b | 455 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
456 | |
457 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
458 | It can store as many registers as it wants to, so target_prepare_to_store | |
459 | must have been previously called. Calls error() if there are problems. */ | |
460 | ||
461 | #define target_store_registers(regs) \ | |
0d06e24b | 462 | (*current_target.to_store_registers) (regs) |
c906108c SS |
463 | |
464 | /* Get ready to modify the registers array. On machines which store | |
465 | individual registers, this doesn't need to do anything. On machines | |
466 | which store all the registers in one fell swoop, this makes sure | |
467 | that REGISTERS contains all the registers from the program being | |
468 | debugged. */ | |
469 | ||
470 | #define target_prepare_to_store() \ | |
0d06e24b | 471 | (*current_target.to_prepare_to_store) () |
c906108c | 472 | |
4930751a C |
473 | extern DCACHE *target_dcache; |
474 | ||
29e57380 C |
475 | extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
476 | struct mem_attrib *attrib); | |
4930751a | 477 | |
a14ed312 | 478 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 479 | |
a14ed312 | 480 | extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 481 | |
4930751a | 482 | extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 483 | |
29e57380 C |
484 | extern int xfer_memory (CORE_ADDR, char *, int, int, |
485 | struct mem_attrib *, struct target_ops *); | |
c906108c | 486 | |
29e57380 C |
487 | extern int child_xfer_memory (CORE_ADDR, char *, int, int, |
488 | struct mem_attrib *, struct target_ops *); | |
c906108c | 489 | |
917317f4 JM |
490 | /* Make a single attempt at transfering LEN bytes. On a successful |
491 | transfer, the number of bytes actually transfered is returned and | |
492 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
493 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 494 | non-zero error indication. */ |
917317f4 | 495 | |
570b8f7c AC |
496 | extern int target_read_memory_partial (CORE_ADDR addr, char *buf, int len, |
497 | int *err); | |
917317f4 | 498 | |
570b8f7c AC |
499 | extern int target_write_memory_partial (CORE_ADDR addr, char *buf, int len, |
500 | int *err); | |
917317f4 | 501 | |
a14ed312 | 502 | extern char *child_pid_to_exec_file (int); |
c906108c | 503 | |
a14ed312 | 504 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
505 | |
506 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 507 | extern void child_post_attach (int); |
c906108c SS |
508 | #endif |
509 | ||
39f77062 | 510 | extern void child_post_wait (ptid_t, int); |
c906108c | 511 | |
39f77062 | 512 | extern void child_post_startup_inferior (ptid_t); |
c906108c | 513 | |
a14ed312 | 514 | extern void child_acknowledge_created_inferior (int); |
c906108c | 515 | |
a14ed312 | 516 | extern int child_insert_fork_catchpoint (int); |
c906108c | 517 | |
a14ed312 | 518 | extern int child_remove_fork_catchpoint (int); |
c906108c | 519 | |
a14ed312 | 520 | extern int child_insert_vfork_catchpoint (int); |
c906108c | 521 | |
a14ed312 | 522 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 523 | |
a14ed312 | 524 | extern void child_acknowledge_created_inferior (int); |
c906108c | 525 | |
6604731b | 526 | extern int child_follow_fork (int); |
c906108c | 527 | |
a14ed312 | 528 | extern int child_insert_exec_catchpoint (int); |
c906108c | 529 | |
a14ed312 | 530 | extern int child_remove_exec_catchpoint (int); |
c906108c | 531 | |
a14ed312 | 532 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 533 | |
a14ed312 | 534 | extern int child_has_exited (int, int, int *); |
c906108c | 535 | |
39f77062 | 536 | extern int child_thread_alive (ptid_t); |
c906108c | 537 | |
47932f85 DJ |
538 | /* From infrun.c. */ |
539 | ||
540 | extern int inferior_has_forked (int pid, int *child_pid); | |
541 | ||
542 | extern int inferior_has_vforked (int pid, int *child_pid); | |
543 | ||
544 | extern int inferior_has_execd (int pid, char **execd_pathname); | |
545 | ||
c906108c SS |
546 | /* From exec.c */ |
547 | ||
a14ed312 | 548 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
549 | |
550 | /* Print a line about the current target. */ | |
551 | ||
552 | #define target_files_info() \ | |
0d06e24b | 553 | (*current_target.to_files_info) (¤t_target) |
c906108c SS |
554 | |
555 | /* Insert a breakpoint at address ADDR in the target machine. | |
556 | SAVE is a pointer to memory allocated for saving the | |
557 | target contents. It is guaranteed by the caller to be long enough | |
558 | to save "sizeof BREAKPOINT" bytes. Result is 0 for success, or | |
559 | an errno value. */ | |
560 | ||
561 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 562 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
563 | |
564 | /* Remove a breakpoint at address ADDR in the target machine. | |
565 | SAVE is a pointer to the same save area | |
566 | that was previously passed to target_insert_breakpoint. | |
567 | Result is 0 for success, or an errno value. */ | |
568 | ||
569 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 570 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
571 | |
572 | /* Initialize the terminal settings we record for the inferior, | |
573 | before we actually run the inferior. */ | |
574 | ||
575 | #define target_terminal_init() \ | |
0d06e24b | 576 | (*current_target.to_terminal_init) () |
c906108c SS |
577 | |
578 | /* Put the inferior's terminal settings into effect. | |
579 | This is preparation for starting or resuming the inferior. */ | |
580 | ||
581 | #define target_terminal_inferior() \ | |
0d06e24b | 582 | (*current_target.to_terminal_inferior) () |
c906108c SS |
583 | |
584 | /* Put some of our terminal settings into effect, | |
585 | enough to get proper results from our output, | |
586 | but do not change into or out of RAW mode | |
587 | so that no input is discarded. | |
588 | ||
589 | After doing this, either terminal_ours or terminal_inferior | |
590 | should be called to get back to a normal state of affairs. */ | |
591 | ||
592 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 593 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
594 | |
595 | /* Put our terminal settings into effect. | |
596 | First record the inferior's terminal settings | |
597 | so they can be restored properly later. */ | |
598 | ||
599 | #define target_terminal_ours() \ | |
0d06e24b | 600 | (*current_target.to_terminal_ours) () |
c906108c | 601 | |
a790ad35 SC |
602 | /* Save our terminal settings. |
603 | This is called from TUI after entering or leaving the curses | |
604 | mode. Since curses modifies our terminal this call is here | |
605 | to take this change into account. */ | |
606 | ||
607 | #define target_terminal_save_ours() \ | |
608 | (*current_target.to_terminal_save_ours) () | |
609 | ||
c906108c SS |
610 | /* Print useful information about our terminal status, if such a thing |
611 | exists. */ | |
612 | ||
613 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 614 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
615 | |
616 | /* Kill the inferior process. Make it go away. */ | |
617 | ||
618 | #define target_kill() \ | |
0d06e24b | 619 | (*current_target.to_kill) () |
c906108c | 620 | |
0d06e24b JM |
621 | /* Load an executable file into the target process. This is expected |
622 | to not only bring new code into the target process, but also to | |
623 | update GDB's symbol tables to match. */ | |
c906108c | 624 | |
11cf8741 | 625 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
626 | |
627 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
628 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
629 | symbol should be returned. The result is 0 if successful, nonzero | |
630 | if the symbol does not exist in the target environment. This | |
631 | function should not call error() if communication with the target | |
632 | is interrupted, since it is called from symbol reading, but should | |
633 | return nonzero, possibly doing a complain(). */ | |
c906108c | 634 | |
0d06e24b JM |
635 | #define target_lookup_symbol(name, addrp) \ |
636 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c | 637 | |
39f77062 | 638 | /* Start an inferior process and set inferior_ptid to its pid. |
c906108c SS |
639 | EXEC_FILE is the file to run. |
640 | ALLARGS is a string containing the arguments to the program. | |
641 | ENV is the environment vector to pass. Errors reported with error(). | |
642 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 643 | |
c906108c | 644 | #define target_create_inferior(exec_file, args, env) \ |
0d06e24b | 645 | (*current_target.to_create_inferior) (exec_file, args, env) |
c906108c SS |
646 | |
647 | ||
648 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
649 | notification of inferior events such as fork and vork immediately | |
650 | after the inferior is created. (This because of how gdb gets an | |
651 | inferior created via invoking a shell to do it. In such a scenario, | |
652 | if the shell init file has commands in it, the shell will fork and | |
653 | exec for each of those commands, and we will see each such fork | |
654 | event. Very bad.) | |
c5aa993b | 655 | |
0d06e24b JM |
656 | Such targets will supply an appropriate definition for this function. */ |
657 | ||
39f77062 KB |
658 | #define target_post_startup_inferior(ptid) \ |
659 | (*current_target.to_post_startup_inferior) (ptid) | |
c906108c SS |
660 | |
661 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
662 | some synchronization between gdb and the new inferior process, PID. */ |
663 | ||
c906108c | 664 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 665 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c | 666 | |
0d06e24b JM |
667 | /* On some targets, we can catch an inferior fork or vfork event when |
668 | it occurs. These functions insert/remove an already-created | |
669 | catchpoint for such events. */ | |
c906108c | 670 | |
c906108c | 671 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 672 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
673 | |
674 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 675 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
676 | |
677 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 678 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
679 | |
680 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 681 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c | 682 | |
6604731b DJ |
683 | /* If the inferior forks or vforks, this function will be called at |
684 | the next resume in order to perform any bookkeeping and fiddling | |
685 | necessary to continue debugging either the parent or child, as | |
686 | requested, and releasing the other. Information about the fork | |
687 | or vfork event is available via get_last_target_status (). | |
688 | This function returns 1 if the inferior should not be resumed | |
689 | (i.e. there is another event pending). */ | |
0d06e24b | 690 | |
6604731b DJ |
691 | #define target_follow_fork(follow_child) \ |
692 | (*current_target.to_follow_fork) (follow_child) | |
c906108c SS |
693 | |
694 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
695 | occurs. These functions insert/remove an already-created |
696 | catchpoint for such events. */ | |
697 | ||
c906108c | 698 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 699 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 700 | |
c906108c | 701 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 702 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c | 703 | |
c906108c SS |
704 | /* Returns the number of exec events that are reported when a process |
705 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
706 | events are being reported. */ |
707 | ||
c906108c | 708 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 709 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c | 710 | |
c906108c | 711 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the |
0d06e24b JM |
712 | exit code of PID, if any. */ |
713 | ||
c906108c | 714 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 715 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
716 | |
717 | /* The debugger has completed a blocking wait() call. There is now | |
0d06e24b | 718 | some process event that must be processed. This function should |
c906108c | 719 | be defined by those targets that require the debugger to perform |
0d06e24b | 720 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
721 | |
722 | /* The inferior process has died. Do what is right. */ | |
723 | ||
724 | #define target_mourn_inferior() \ | |
0d06e24b | 725 | (*current_target.to_mourn_inferior) () |
c906108c SS |
726 | |
727 | /* Does target have enough data to do a run or attach command? */ | |
728 | ||
729 | #define target_can_run(t) \ | |
0d06e24b | 730 | ((t)->to_can_run) () |
c906108c SS |
731 | |
732 | /* post process changes to signal handling in the inferior. */ | |
733 | ||
39f77062 KB |
734 | #define target_notice_signals(ptid) \ |
735 | (*current_target.to_notice_signals) (ptid) | |
c906108c SS |
736 | |
737 | /* Check to see if a thread is still alive. */ | |
738 | ||
39f77062 KB |
739 | #define target_thread_alive(ptid) \ |
740 | (*current_target.to_thread_alive) (ptid) | |
c906108c | 741 | |
b83266a0 SS |
742 | /* Query for new threads and add them to the thread list. */ |
743 | ||
744 | #define target_find_new_threads() \ | |
0d06e24b | 745 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 746 | |
0d06e24b JM |
747 | /* Make target stop in a continuable fashion. (For instance, under |
748 | Unix, this should act like SIGSTOP). This function is normally | |
749 | used by GUIs to implement a stop button. */ | |
c906108c SS |
750 | |
751 | #define target_stop current_target.to_stop | |
752 | ||
753 | /* Queries the target side for some information. The first argument is a | |
754 | letter specifying the type of the query, which is used to determine who | |
755 | should process it. The second argument is a string that specifies which | |
756 | information is desired and the third is a buffer that carries back the | |
757 | response from the target side. The fourth parameter is the size of the | |
0d06e24b | 758 | output buffer supplied. */ |
c5aa993b | 759 | |
c906108c | 760 | #define target_query(query_type, query, resp_buffer, bufffer_size) \ |
0d06e24b | 761 | (*current_target.to_query) (query_type, query, resp_buffer, bufffer_size) |
c906108c | 762 | |
96baa820 JM |
763 | /* Send the specified COMMAND to the target's monitor |
764 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 765 | placed in OUTBUF. */ |
96baa820 JM |
766 | |
767 | #define target_rcmd(command, outbuf) \ | |
768 | (*current_target.to_rcmd) (command, outbuf) | |
769 | ||
770 | ||
c906108c SS |
771 | /* Get the symbol information for a breakpointable routine called when |
772 | an exception event occurs. | |
773 | Intended mainly for C++, and for those | |
774 | platforms/implementations where such a callback mechanism is available, | |
775 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 776 | different mechanisms for debugging exceptions. */ |
c906108c SS |
777 | |
778 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 779 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 780 | |
0d06e24b | 781 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 782 | |
c906108c | 783 | #define target_get_current_exception_event() \ |
0d06e24b | 784 | (*current_target.to_get_current_exception_event) () |
c906108c | 785 | |
c906108c SS |
786 | /* Does the target include all of memory, or only part of it? This |
787 | determines whether we look up the target chain for other parts of | |
788 | memory if this target can't satisfy a request. */ | |
789 | ||
790 | #define target_has_all_memory \ | |
0d06e24b | 791 | (current_target.to_has_all_memory) |
c906108c SS |
792 | |
793 | /* Does the target include memory? (Dummy targets don't.) */ | |
794 | ||
795 | #define target_has_memory \ | |
0d06e24b | 796 | (current_target.to_has_memory) |
c906108c SS |
797 | |
798 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
799 | we start a process.) */ | |
c5aa993b | 800 | |
c906108c | 801 | #define target_has_stack \ |
0d06e24b | 802 | (current_target.to_has_stack) |
c906108c SS |
803 | |
804 | /* Does the target have registers? (Exec files don't.) */ | |
805 | ||
806 | #define target_has_registers \ | |
0d06e24b | 807 | (current_target.to_has_registers) |
c906108c SS |
808 | |
809 | /* Does the target have execution? Can we make it jump (through | |
810 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
811 | way, it needs to check whether an inferior actually exists. | |
812 | remote-udi.c and probably other targets can be the current target | |
813 | when the inferior doesn't actually exist at the moment. Right now | |
814 | this just tells us whether this target is *capable* of execution. */ | |
815 | ||
816 | #define target_has_execution \ | |
0d06e24b | 817 | (current_target.to_has_execution) |
c906108c SS |
818 | |
819 | /* Can the target support the debugger control of thread execution? | |
820 | a) Can it lock the thread scheduler? | |
821 | b) Can it switch the currently running thread? */ | |
822 | ||
823 | #define target_can_lock_scheduler \ | |
0d06e24b | 824 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
825 | |
826 | #define target_can_switch_threads \ | |
0d06e24b | 827 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 828 | |
6426a772 JM |
829 | /* Can the target support asynchronous execution? */ |
830 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
831 | ||
832 | /* Is the target in asynchronous execution mode? */ | |
833 | #define target_is_async_p() (current_target.to_is_async_p()) | |
834 | ||
835 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
836 | #define target_async(CALLBACK,CONTEXT) \ |
837 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 838 | |
04714b91 AC |
839 | /* This is to be used ONLY within call_function_by_hand(). It provides |
840 | a workaround, to have inferior function calls done in sychronous | |
841 | mode, even though the target is asynchronous. After | |
ed9a39eb JM |
842 | target_async_mask(0) is called, calls to target_can_async_p() will |
843 | return FALSE , so that target_resume() will not try to start the | |
844 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
845 | restore the previous nature of the target, by calling | |
846 | target_async_mask(1). After that, target_can_async_p() will return | |
04714b91 | 847 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. |
ed9a39eb JM |
848 | |
849 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
850 | the turning async on and off to the single execution commands, | |
0d06e24b | 851 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
852 | |
853 | #define target_async_mask_value \ | |
0d06e24b | 854 | (current_target.to_async_mask_value) |
ed9a39eb JM |
855 | |
856 | extern int target_async_mask (int mask); | |
857 | ||
a14ed312 | 858 | extern void target_link (char *, CORE_ADDR *); |
c906108c SS |
859 | |
860 | /* Converts a process id to a string. Usually, the string just contains | |
861 | `process xyz', but on some systems it may contain | |
862 | `process xyz thread abc'. */ | |
863 | ||
ed9a39eb JM |
864 | #undef target_pid_to_str |
865 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
866 | |
867 | #ifndef target_tid_to_str | |
868 | #define target_tid_to_str(PID) \ | |
0d06e24b | 869 | target_pid_to_str (PID) |
39f77062 | 870 | extern char *normal_pid_to_str (ptid_t ptid); |
c906108c | 871 | #endif |
c5aa993b | 872 | |
0d06e24b JM |
873 | /* Return a short string describing extra information about PID, |
874 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
875 | is okay. */ | |
876 | ||
877 | #define target_extra_thread_info(TP) \ | |
878 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 879 | |
11cf8741 JM |
880 | /* |
881 | * New Objfile Event Hook: | |
882 | * | |
883 | * Sometimes a GDB component wants to get notified whenever a new | |
884 | * objfile is loaded. Mainly this is used by thread-debugging | |
885 | * implementations that need to know when symbols for the target | |
886 | * thread implemenation are available. | |
887 | * | |
888 | * The old way of doing this is to define a macro 'target_new_objfile' | |
889 | * that points to the function that you want to be called on every | |
890 | * objfile/shlib load. | |
891 | * | |
892 | * The new way is to grab the function pointer, 'target_new_objfile_hook', | |
893 | * and point it to the function that you want to be called on every | |
894 | * objfile/shlib load. | |
895 | * | |
896 | * If multiple clients are willing to be cooperative, they can each | |
897 | * save a pointer to the previous value of target_new_objfile_hook | |
898 | * before modifying it, and arrange for their function to call the | |
899 | * previous function in the chain. In that way, multiple clients | |
900 | * can receive this notification (something like with signal handlers). | |
901 | */ | |
c906108c | 902 | |
507f3c78 | 903 | extern void (*target_new_objfile_hook) (struct objfile *); |
c906108c SS |
904 | |
905 | #ifndef target_pid_or_tid_to_str | |
906 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 907 | target_pid_to_str (ID) |
c906108c SS |
908 | #endif |
909 | ||
910 | /* Attempts to find the pathname of the executable file | |
911 | that was run to create a specified process. | |
912 | ||
913 | The process PID must be stopped when this operation is used. | |
c5aa993b | 914 | |
c906108c SS |
915 | If the executable file cannot be determined, NULL is returned. |
916 | ||
917 | Else, a pointer to a character string containing the pathname | |
918 | is returned. This string should be copied into a buffer by | |
919 | the client if the string will not be immediately used, or if | |
0d06e24b | 920 | it must persist. */ |
c906108c SS |
921 | |
922 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 923 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 924 | |
be4d1333 MS |
925 | /* |
926 | * Iterator function for target memory regions. | |
927 | * Calls a callback function once for each memory region 'mapped' | |
928 | * in the child process. Defined as a simple macro rather than | |
929 | * as a function macro so that it can be tested for nullity. | |
930 | */ | |
931 | ||
932 | #define target_find_memory_regions(FUNC, DATA) \ | |
933 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
934 | ||
935 | /* | |
936 | * Compose corefile .note section. | |
937 | */ | |
938 | ||
939 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
940 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
941 | ||
3f47be5c EZ |
942 | /* Thread-local values. */ |
943 | #define target_get_thread_local_address \ | |
944 | (current_target.to_get_thread_local_address) | |
945 | #define target_get_thread_local_address_p() \ | |
946 | (target_get_thread_local_address != NULL) | |
947 | ||
9d8a64cb | 948 | /* Hook to call target-dependent code after reading in a new symbol table. */ |
c906108c SS |
949 | |
950 | #ifndef TARGET_SYMFILE_POSTREAD | |
951 | #define TARGET_SYMFILE_POSTREAD(OBJFILE) | |
952 | #endif | |
953 | ||
9d8a64cb | 954 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
955 | started. */ |
956 | ||
957 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
958 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
959 | #endif | |
960 | ||
961 | /* Hardware watchpoint interfaces. */ | |
962 | ||
963 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
964 | write). */ | |
965 | ||
966 | #ifndef STOPPED_BY_WATCHPOINT | |
ccaa32c7 GS |
967 | #define STOPPED_BY_WATCHPOINT(w) \ |
968 | (*current_target.to_stopped_by_watchpoint) () | |
c906108c | 969 | #endif |
7df1a324 KW |
970 | |
971 | /* Non-zero if we have continuable watchpoints */ | |
972 | ||
973 | #ifndef HAVE_CONTINUABLE_WATCHPOINT | |
974 | #define HAVE_CONTINUABLE_WATCHPOINT \ | |
975 | (current_target.to_have_continuable_watchpoint) | |
976 | #endif | |
c906108c SS |
977 | |
978 | /* HP-UX supplies these operations, which respectively disable and enable | |
979 | the memory page-protections that are used to implement hardware watchpoints | |
0d06e24b JM |
980 | on that platform. See wait_for_inferior's use of these. */ |
981 | ||
c906108c SS |
982 | #if !defined(TARGET_DISABLE_HW_WATCHPOINTS) |
983 | #define TARGET_DISABLE_HW_WATCHPOINTS(pid) | |
984 | #endif | |
985 | ||
986 | #if !defined(TARGET_ENABLE_HW_WATCHPOINTS) | |
987 | #define TARGET_ENABLE_HW_WATCHPOINTS(pid) | |
988 | #endif | |
989 | ||
ccaa32c7 | 990 | /* Provide defaults for hardware watchpoint functions. */ |
c906108c | 991 | |
ccaa32c7 GS |
992 | /* If the *_hw_beakpoint functions have not been defined |
993 | elsewhere use the definitions in the target vector. */ | |
c906108c SS |
994 | |
995 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
996 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
997 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
998 | (including this one?). OTHERTYPE is who knows what... */ | |
999 | ||
ccaa32c7 GS |
1000 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
1001 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ | |
1002 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
1003 | #endif | |
c906108c SS |
1004 | |
1005 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
1006 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \ | |
ccaa32c7 | 1007 | (*current_target.to_region_size_ok_for_hw_watchpoint) (byte_count) |
c906108c SS |
1008 | #endif |
1009 | ||
c906108c SS |
1010 | |
1011 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1012 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1013 | success, non-zero for failure. */ | |
1014 | ||
ccaa32c7 GS |
1015 | #ifndef target_insert_watchpoint |
1016 | #define target_insert_watchpoint(addr, len, type) \ | |
1017 | (*current_target.to_insert_watchpoint) (addr, len, type) | |
c906108c | 1018 | |
ccaa32c7 GS |
1019 | #define target_remove_watchpoint(addr, len, type) \ |
1020 | (*current_target.to_remove_watchpoint) (addr, len, type) | |
1021 | #endif | |
c906108c SS |
1022 | |
1023 | #ifndef target_insert_hw_breakpoint | |
ccaa32c7 GS |
1024 | #define target_insert_hw_breakpoint(addr, save) \ |
1025 | (*current_target.to_insert_hw_breakpoint) (addr, save) | |
1026 | ||
1027 | #define target_remove_hw_breakpoint(addr, save) \ | |
1028 | (*current_target.to_remove_hw_breakpoint) (addr, save) | |
c906108c SS |
1029 | #endif |
1030 | ||
1031 | #ifndef target_stopped_data_address | |
ccaa32c7 GS |
1032 | #define target_stopped_data_address() \ |
1033 | (*current_target.to_stopped_data_address) () | |
c906108c SS |
1034 | #endif |
1035 | ||
1036 | /* If defined, then we need to decr pc by this much after a hardware break- | |
1037 | point. Presumably this overrides DECR_PC_AFTER_BREAK... */ | |
1038 | ||
1039 | #ifndef DECR_PC_AFTER_HW_BREAK | |
1040 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1041 | #endif | |
1042 | ||
1043 | /* Sometimes gdb may pick up what appears to be a valid target address | |
1044 | from a minimal symbol, but the value really means, essentially, | |
1045 | "This is an index into a table which is populated when the inferior | |
0d06e24b JM |
1046 | is run. Therefore, do not attempt to use this as a PC." */ |
1047 | ||
c906108c SS |
1048 | #if !defined(PC_REQUIRES_RUN_BEFORE_USE) |
1049 | #define PC_REQUIRES_RUN_BEFORE_USE(pc) (0) | |
1050 | #endif | |
1051 | ||
1052 | /* This will only be defined by a target that supports catching vfork events, | |
1053 | such as HP-UX. | |
1054 | ||
1055 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1056 | child process after it has exec'd, causes the parent process to resume as | |
1057 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1058 | define this to a function that prevents that from happening. */ |
c906108c SS |
1059 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1060 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1061 | #endif | |
1062 | ||
1063 | /* This will only be defined by a target that supports catching vfork events, | |
1064 | such as HP-UX. | |
1065 | ||
1066 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1067 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1068 | vfork event will be delivered to us. */ |
1069 | ||
c906108c SS |
1070 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1071 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1072 | #endif | |
1073 | ||
1074 | /* Routines for maintenance of the target structures... | |
1075 | ||
1076 | add_target: Add a target to the list of all possible targets. | |
1077 | ||
1078 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1079 | targets, within its particular stratum of the stack. Result |
1080 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1081 | should warn user). | |
c906108c SS |
1082 | |
1083 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1084 | no matter where it is on the list. Returns 0 if no |
1085 | change, 1 if removed from stack. | |
c906108c | 1086 | |
c5aa993b | 1087 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1088 | |
a14ed312 | 1089 | extern void add_target (struct target_ops *); |
c906108c | 1090 | |
a14ed312 | 1091 | extern int push_target (struct target_ops *); |
c906108c | 1092 | |
a14ed312 | 1093 | extern int unpush_target (struct target_ops *); |
c906108c | 1094 | |
a14ed312 | 1095 | extern void target_preopen (int); |
c906108c | 1096 | |
a14ed312 | 1097 | extern void pop_target (void); |
c906108c SS |
1098 | |
1099 | /* Struct section_table maps address ranges to file sections. It is | |
1100 | mostly used with BFD files, but can be used without (e.g. for handling | |
1101 | raw disks, or files not in formats handled by BFD). */ | |
1102 | ||
c5aa993b JM |
1103 | struct section_table |
1104 | { | |
1105 | CORE_ADDR addr; /* Lowest address in section */ | |
1106 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1107 | |
c5aa993b | 1108 | sec_ptr the_bfd_section; |
c906108c | 1109 | |
c5aa993b JM |
1110 | bfd *bfd; /* BFD file pointer */ |
1111 | }; | |
c906108c SS |
1112 | |
1113 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
1114 | Returns 0 if OK, 1 on error. */ | |
1115 | ||
570b8f7c AC |
1116 | extern int build_section_table (bfd *, struct section_table **, |
1117 | struct section_table **); | |
c906108c SS |
1118 | |
1119 | /* From mem-break.c */ | |
1120 | ||
a14ed312 | 1121 | extern int memory_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 1122 | |
a14ed312 | 1123 | extern int memory_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 1124 | |
a14ed312 | 1125 | extern int default_memory_remove_breakpoint (CORE_ADDR, char *); |
917317f4 | 1126 | |
a14ed312 | 1127 | extern int default_memory_insert_breakpoint (CORE_ADDR, char *); |
917317f4 | 1128 | |
f4f9705a AC |
1129 | extern const unsigned char *memory_breakpoint_from_pc (CORE_ADDR *pcptr, |
1130 | int *lenptr); | |
c906108c SS |
1131 | |
1132 | ||
1133 | /* From target.c */ | |
1134 | ||
a14ed312 | 1135 | extern void initialize_targets (void); |
c906108c | 1136 | |
a14ed312 | 1137 | extern void noprocess (void); |
c906108c | 1138 | |
a14ed312 | 1139 | extern void find_default_attach (char *, int); |
c906108c | 1140 | |
a14ed312 | 1141 | extern void find_default_create_inferior (char *, char *, char **); |
c906108c | 1142 | |
a14ed312 | 1143 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1144 | |
a14ed312 | 1145 | extern struct target_ops *find_core_target (void); |
6426a772 | 1146 | |
a14ed312 | 1147 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb | 1148 | |
570b8f7c AC |
1149 | extern int target_resize_to_sections (struct target_ops *target, |
1150 | int num_added); | |
07cd4b97 JB |
1151 | |
1152 | extern void remove_target_sections (bfd *abfd); | |
1153 | ||
c906108c SS |
1154 | \f |
1155 | /* Stuff that should be shared among the various remote targets. */ | |
1156 | ||
1157 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1158 | information (higher values, more information). */ | |
1159 | extern int remote_debug; | |
1160 | ||
1161 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1162 | extern int baud_rate; | |
1163 | /* Timeout limit for response from target. */ | |
1164 | extern int remote_timeout; | |
1165 | ||
c906108c SS |
1166 | \f |
1167 | /* Functions for helping to write a native target. */ | |
1168 | ||
1169 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1170 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1171 | |
c2d11a7d | 1172 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1173 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1174 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1175 | to the shorter target_signal_p() because it is far less ambigious. | |
1176 | In this context ``target_signal'' refers to GDB's internal | |
1177 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1178 | refers to the target operating system's signal. Confused? */ |
1179 | ||
c2d11a7d JM |
1180 | extern int target_signal_to_host_p (enum target_signal signo); |
1181 | ||
1182 | /* Convert between host signal numbers and enum target_signal's. | |
1183 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1184 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1185 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1186 | refering to the target operating system's signal numbering. | |
1187 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1188 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1189 | internal representation of a target operating system's signal. */ |
1190 | ||
a14ed312 KB |
1191 | extern enum target_signal target_signal_from_host (int); |
1192 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1193 | |
1194 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1195 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1196 | |
1197 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1198 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1199 | \f |
1200 | /* Imported from machine dependent code */ | |
1201 | ||
c906108c | 1202 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1203 | void target_ignore (void); |
c906108c | 1204 | |
c5aa993b | 1205 | #endif /* !defined (TARGET_H) */ |