Commit | Line | Data |
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c906108c | 1 | /* Interface between GDB and target environments, including files and processes |
b6ba6518 KB |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 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 | ||
115 | /* This is used for target async and extended-async | |
116 | only. Remote_async_wait() returns this when there is an event | |
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); | |
196 | void (*to_require_attach) (char *, int); | |
197 | void (*to_detach) (char *, int); | |
198 | void (*to_require_detach) (int, char *, int); | |
199 | void (*to_resume) (int, int, enum target_signal); | |
200 | int (*to_wait) (int, struct target_waitstatus *); | |
201 | void (*to_post_wait) (int, int); | |
202 | void (*to_fetch_registers) (int); | |
203 | void (*to_store_registers) (int); | |
204 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
205 | |
206 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
207 | target address MEMADDR. If WRITE, transfer them to the target, else | |
208 | transfer them from the target. TARGET is the target from which we | |
209 | get this function. | |
210 | ||
211 | Return value, N, is one of the following: | |
212 | ||
213 | 0 means that we can't handle this. If errno has been set, it is the | |
214 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
215 | ||
216 | positive (call it N) means that we have transferred N bytes | |
217 | starting at MEMADDR. We might be able to handle more bytes | |
218 | beyond this length, but no promises. | |
219 | ||
220 | negative (call its absolute value N) means that we cannot | |
221 | transfer right at MEMADDR, but we could transfer at least | |
222 | something at MEMADDR + N. */ | |
223 | ||
507f3c78 | 224 | int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, |
29e57380 C |
225 | int len, int write, |
226 | struct mem_attrib *attrib, | |
227 | struct target_ops *target); | |
c906108c SS |
228 | |
229 | #if 0 | |
c5aa993b | 230 | /* Enable this after 4.12. */ |
c906108c | 231 | |
c5aa993b JM |
232 | /* Search target memory. Start at STARTADDR and take LEN bytes of |
233 | target memory, and them with MASK, and compare to DATA. If they | |
234 | match, set *ADDR_FOUND to the address we found it at, store the data | |
235 | we found at LEN bytes starting at DATA_FOUND, and return. If | |
236 | not, add INCREMENT to the search address and keep trying until | |
237 | the search address is outside of the range [LORANGE,HIRANGE). | |
c906108c | 238 | |
0d06e24b JM |
239 | If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and |
240 | return. */ | |
241 | ||
507f3c78 KB |
242 | void (*to_search) (int len, char *data, char *mask, |
243 | CORE_ADDR startaddr, int increment, | |
244 | CORE_ADDR lorange, CORE_ADDR hirange, | |
245 | CORE_ADDR * addr_found, char *data_found); | |
c906108c SS |
246 | |
247 | #define target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found) \ | |
0d06e24b JM |
248 | (*current_target.to_search) (len, data, mask, startaddr, increment, \ |
249 | lorange, hirange, addr_found, data_found) | |
c5aa993b JM |
250 | #endif /* 0 */ |
251 | ||
507f3c78 KB |
252 | void (*to_files_info) (struct target_ops *); |
253 | int (*to_insert_breakpoint) (CORE_ADDR, char *); | |
254 | int (*to_remove_breakpoint) (CORE_ADDR, char *); | |
255 | void (*to_terminal_init) (void); | |
256 | void (*to_terminal_inferior) (void); | |
257 | void (*to_terminal_ours_for_output) (void); | |
258 | void (*to_terminal_ours) (void); | |
259 | void (*to_terminal_info) (char *, int); | |
260 | void (*to_kill) (void); | |
261 | void (*to_load) (char *, int); | |
262 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
263 | void (*to_create_inferior) (char *, char *, char **); | |
264 | void (*to_post_startup_inferior) (int); | |
265 | void (*to_acknowledge_created_inferior) (int); | |
266 | void (*to_clone_and_follow_inferior) (int, int *); | |
267 | void (*to_post_follow_inferior_by_clone) (void); | |
268 | int (*to_insert_fork_catchpoint) (int); | |
269 | int (*to_remove_fork_catchpoint) (int); | |
270 | int (*to_insert_vfork_catchpoint) (int); | |
271 | int (*to_remove_vfork_catchpoint) (int); | |
272 | int (*to_has_forked) (int, int *); | |
273 | int (*to_has_vforked) (int, int *); | |
274 | int (*to_can_follow_vfork_prior_to_exec) (void); | |
275 | void (*to_post_follow_vfork) (int, int, int, int); | |
276 | int (*to_insert_exec_catchpoint) (int); | |
277 | int (*to_remove_exec_catchpoint) (int); | |
278 | int (*to_has_execd) (int, char **); | |
279 | int (*to_reported_exec_events_per_exec_call) (void); | |
280 | int (*to_has_syscall_event) (int, enum target_waitkind *, int *); | |
281 | int (*to_has_exited) (int, int, int *); | |
282 | void (*to_mourn_inferior) (void); | |
283 | int (*to_can_run) (void); | |
284 | void (*to_notice_signals) (int pid); | |
285 | int (*to_thread_alive) (int pid); | |
286 | void (*to_find_new_threads) (void); | |
287 | char *(*to_pid_to_str) (int); | |
288 | char *(*to_extra_thread_info) (struct thread_info *); | |
289 | void (*to_stop) (void); | |
290 | int (*to_query) (int /*char */ , char *, char *, int *); | |
d9fcf2fb | 291 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
292 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
293 | exception_event_kind, | |
294 | int); | |
295 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
296 | char *(*to_pid_to_exec_file) (int pid); | |
297 | char *(*to_core_file_to_sym_file) (char *); | |
c5aa993b JM |
298 | enum strata to_stratum; |
299 | struct target_ops | |
300 | *DONT_USE; /* formerly to_next */ | |
301 | int to_has_all_memory; | |
302 | int to_has_memory; | |
303 | int to_has_stack; | |
304 | int to_has_registers; | |
305 | int to_has_execution; | |
306 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
307 | struct section_table |
308 | *to_sections; | |
309 | struct section_table | |
310 | *to_sections_end; | |
6426a772 JM |
311 | /* ASYNC target controls */ |
312 | int (*to_can_async_p) (void); | |
313 | int (*to_is_async_p) (void); | |
0d06e24b JM |
314 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
315 | void *context); | |
ed9a39eb | 316 | int to_async_mask_value; |
c5aa993b | 317 | int to_magic; |
0d06e24b JM |
318 | /* Need sub-structure for target machine related rather than comm related? |
319 | */ | |
c5aa993b | 320 | }; |
c906108c SS |
321 | |
322 | /* Magic number for checking ops size. If a struct doesn't end with this | |
323 | number, somebody changed the declaration but didn't change all the | |
324 | places that initialize one. */ | |
325 | ||
326 | #define OPS_MAGIC 3840 | |
327 | ||
328 | /* The ops structure for our "current" target process. This should | |
329 | never be NULL. If there is no target, it points to the dummy_target. */ | |
330 | ||
c5aa993b | 331 | extern struct target_ops current_target; |
c906108c SS |
332 | |
333 | /* An item on the target stack. */ | |
334 | ||
335 | struct target_stack_item | |
c5aa993b JM |
336 | { |
337 | struct target_stack_item *next; | |
338 | struct target_ops *target_ops; | |
339 | }; | |
c906108c SS |
340 | |
341 | /* The target stack. */ | |
342 | ||
343 | extern struct target_stack_item *target_stack; | |
344 | ||
345 | /* Define easy words for doing these operations on our current target. */ | |
346 | ||
347 | #define target_shortname (current_target.to_shortname) | |
348 | #define target_longname (current_target.to_longname) | |
349 | ||
350 | /* The open routine takes the rest of the parameters from the command, | |
351 | and (if successful) pushes a new target onto the stack. | |
352 | Targets should supply this routine, if only to provide an error message. */ | |
0d06e24b | 353 | |
4930751a C |
354 | #define target_open(name, from_tty) \ |
355 | do { \ | |
356 | dcache_invalidate (target_dcache); \ | |
357 | (*current_target.to_open) (name, from_tty); \ | |
358 | } while (0) | |
c906108c SS |
359 | |
360 | /* Does whatever cleanup is required for a target that we are no longer | |
361 | going to be calling. Argument says whether we are quitting gdb and | |
362 | should not get hung in case of errors, or whether we want a clean | |
363 | termination even if it takes a while. This routine is automatically | |
364 | always called just before a routine is popped off the target stack. | |
365 | Closing file descriptors and freeing memory are typical things it should | |
366 | do. */ | |
367 | ||
368 | #define target_close(quitting) \ | |
0d06e24b | 369 | (*current_target.to_close) (quitting) |
c906108c SS |
370 | |
371 | /* Attaches to a process on the target side. Arguments are as passed | |
372 | to the `attach' command by the user. This routine can be called | |
373 | when the target is not on the target-stack, if the target_can_run | |
374 | routine returns 1; in that case, it must push itself onto the stack. | |
375 | Upon exit, the target should be ready for normal operations, and | |
376 | should be ready to deliver the status of the process immediately | |
377 | (without waiting) to an upcoming target_wait call. */ | |
378 | ||
379 | #define target_attach(args, from_tty) \ | |
0d06e24b | 380 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
381 | |
382 | /* The target_attach operation places a process under debugger control, | |
383 | and stops the process. | |
384 | ||
385 | This operation provides a target-specific hook that allows the | |
0d06e24b | 386 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 387 | #define target_post_attach(pid) \ |
0d06e24b | 388 | (*current_target.to_post_attach) (pid) |
c906108c SS |
389 | |
390 | /* Attaches to a process on the target side, if not already attached. | |
391 | (If already attached, takes no action.) | |
392 | ||
393 | This operation can be used to follow the child process of a fork. | |
394 | On some targets, such child processes of an original inferior process | |
395 | are automatically under debugger control, and thus do not require an | |
396 | actual attach operation. */ | |
397 | ||
398 | #define target_require_attach(args, from_tty) \ | |
0d06e24b | 399 | (*current_target.to_require_attach) (args, from_tty) |
c906108c SS |
400 | |
401 | /* Takes a program previously attached to and detaches it. | |
402 | The program may resume execution (some targets do, some don't) and will | |
403 | no longer stop on signals, etc. We better not have left any breakpoints | |
404 | in the program or it'll die when it hits one. ARGS is arguments | |
405 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
406 | says whether to be verbose or not. */ | |
407 | ||
a14ed312 | 408 | extern void target_detach (char *, int); |
c906108c SS |
409 | |
410 | /* Detaches from a process on the target side, if not already dettached. | |
411 | (If already detached, takes no action.) | |
412 | ||
413 | This operation can be used to follow the parent process of a fork. | |
414 | On some targets, such child processes of an original inferior process | |
415 | are automatically under debugger control, and thus do require an actual | |
416 | detach operation. | |
417 | ||
418 | PID is the process id of the child to detach from. | |
419 | ARGS is arguments typed by the user (e.g. a signal to send the process). | |
420 | FROM_TTY says whether to be verbose or not. */ | |
421 | ||
0d06e24b JM |
422 | #define target_require_detach(pid, args, from_tty) \ |
423 | (*current_target.to_require_detach) (pid, args, from_tty) | |
c906108c SS |
424 | |
425 | /* Resume execution of the target process PID. STEP says whether to | |
426 | single-step or to run free; SIGGNAL is the signal to be given to | |
427 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
428 | pass TARGET_SIGNAL_DEFAULT. */ | |
429 | ||
4930751a C |
430 | #define target_resume(pid, step, siggnal) \ |
431 | do { \ | |
432 | dcache_invalidate(target_dcache); \ | |
433 | (*current_target.to_resume) (pid, step, siggnal); \ | |
434 | } while (0) | |
c906108c SS |
435 | |
436 | /* Wait for process pid to do something. Pid = -1 to wait for any pid | |
437 | to do something. Return pid of child, or -1 in case of error; | |
438 | store status through argument pointer STATUS. Note that it is | |
439 | *not* OK to return_to_top_level out of target_wait without popping | |
440 | the debugging target from the stack; GDB isn't prepared to get back | |
441 | to the prompt with a debugging target but without the frame cache, | |
442 | stop_pc, etc., set up. */ | |
443 | ||
444 | #define target_wait(pid, status) \ | |
0d06e24b | 445 | (*current_target.to_wait) (pid, status) |
c906108c SS |
446 | |
447 | /* The target_wait operation waits for a process event to occur, and | |
448 | thereby stop the process. | |
449 | ||
450 | On some targets, certain events may happen in sequences. gdb's | |
451 | correct response to any single event of such a sequence may require | |
452 | knowledge of what earlier events in the sequence have been seen. | |
453 | ||
454 | This operation provides a target-specific hook that allows the | |
0d06e24b | 455 | necessary bookkeeping to be performed to track such sequences. */ |
c906108c SS |
456 | |
457 | #define target_post_wait(pid, status) \ | |
0d06e24b | 458 | (*current_target.to_post_wait) (pid, status) |
c906108c | 459 | |
17dee195 | 460 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
461 | |
462 | #define target_fetch_registers(regno) \ | |
0d06e24b | 463 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
464 | |
465 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
466 | It can store as many registers as it wants to, so target_prepare_to_store | |
467 | must have been previously called. Calls error() if there are problems. */ | |
468 | ||
469 | #define target_store_registers(regs) \ | |
0d06e24b | 470 | (*current_target.to_store_registers) (regs) |
c906108c SS |
471 | |
472 | /* Get ready to modify the registers array. On machines which store | |
473 | individual registers, this doesn't need to do anything. On machines | |
474 | which store all the registers in one fell swoop, this makes sure | |
475 | that REGISTERS contains all the registers from the program being | |
476 | debugged. */ | |
477 | ||
478 | #define target_prepare_to_store() \ | |
0d06e24b | 479 | (*current_target.to_prepare_to_store) () |
c906108c | 480 | |
4930751a C |
481 | extern DCACHE *target_dcache; |
482 | ||
29e57380 C |
483 | extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
484 | struct mem_attrib *attrib); | |
4930751a | 485 | |
a14ed312 | 486 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 487 | |
a14ed312 | 488 | extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 489 | |
4930751a | 490 | extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 491 | |
29e57380 C |
492 | extern int xfer_memory (CORE_ADDR, char *, int, int, |
493 | struct mem_attrib *, struct target_ops *); | |
c906108c | 494 | |
29e57380 C |
495 | extern int child_xfer_memory (CORE_ADDR, char *, int, int, |
496 | struct mem_attrib *, struct target_ops *); | |
c906108c | 497 | |
917317f4 JM |
498 | /* Make a single attempt at transfering LEN bytes. On a successful |
499 | transfer, the number of bytes actually transfered is returned and | |
500 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
501 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 502 | non-zero error indication. */ |
917317f4 | 503 | |
ed9a39eb JM |
504 | extern int |
505 | target_read_memory_partial (CORE_ADDR addr, char *buf, int len, int *err); | |
917317f4 | 506 | |
ed9a39eb JM |
507 | extern int |
508 | target_write_memory_partial (CORE_ADDR addr, char *buf, int len, int *err); | |
917317f4 | 509 | |
a14ed312 | 510 | extern char *child_pid_to_exec_file (int); |
c906108c | 511 | |
a14ed312 | 512 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
513 | |
514 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 515 | extern void child_post_attach (int); |
c906108c SS |
516 | #endif |
517 | ||
a14ed312 | 518 | extern void child_post_wait (int, int); |
c906108c | 519 | |
a14ed312 | 520 | extern void child_post_startup_inferior (int); |
c906108c | 521 | |
a14ed312 | 522 | extern void child_acknowledge_created_inferior (int); |
c906108c | 523 | |
a14ed312 | 524 | extern void child_clone_and_follow_inferior (int, int *); |
c906108c | 525 | |
a14ed312 | 526 | extern void child_post_follow_inferior_by_clone (void); |
c906108c | 527 | |
a14ed312 | 528 | extern int child_insert_fork_catchpoint (int); |
c906108c | 529 | |
a14ed312 | 530 | extern int child_remove_fork_catchpoint (int); |
c906108c | 531 | |
a14ed312 | 532 | extern int child_insert_vfork_catchpoint (int); |
c906108c | 533 | |
a14ed312 | 534 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 535 | |
a14ed312 | 536 | extern int child_has_forked (int, int *); |
c906108c | 537 | |
a14ed312 | 538 | extern int child_has_vforked (int, int *); |
c906108c | 539 | |
a14ed312 | 540 | extern void child_acknowledge_created_inferior (int); |
c906108c | 541 | |
a14ed312 | 542 | extern int child_can_follow_vfork_prior_to_exec (void); |
c906108c | 543 | |
a14ed312 | 544 | extern void child_post_follow_vfork (int, int, int, int); |
c906108c | 545 | |
a14ed312 | 546 | extern int child_insert_exec_catchpoint (int); |
c906108c | 547 | |
a14ed312 | 548 | extern int child_remove_exec_catchpoint (int); |
c906108c | 549 | |
a14ed312 | 550 | extern int child_has_execd (int, char **); |
c906108c | 551 | |
a14ed312 | 552 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 553 | |
a14ed312 | 554 | extern int child_has_syscall_event (int, enum target_waitkind *, int *); |
c906108c | 555 | |
a14ed312 | 556 | extern int child_has_exited (int, int, int *); |
c906108c | 557 | |
a14ed312 | 558 | extern int child_thread_alive (int); |
c906108c SS |
559 | |
560 | /* From exec.c */ | |
561 | ||
a14ed312 | 562 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
563 | |
564 | /* Print a line about the current target. */ | |
565 | ||
566 | #define target_files_info() \ | |
0d06e24b | 567 | (*current_target.to_files_info) (¤t_target) |
c906108c SS |
568 | |
569 | /* Insert a breakpoint at address ADDR in the target machine. | |
570 | SAVE is a pointer to memory allocated for saving the | |
571 | target contents. It is guaranteed by the caller to be long enough | |
572 | to save "sizeof BREAKPOINT" bytes. Result is 0 for success, or | |
573 | an errno value. */ | |
574 | ||
575 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 576 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
577 | |
578 | /* Remove a breakpoint at address ADDR in the target machine. | |
579 | SAVE is a pointer to the same save area | |
580 | that was previously passed to target_insert_breakpoint. | |
581 | Result is 0 for success, or an errno value. */ | |
582 | ||
583 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 584 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
585 | |
586 | /* Initialize the terminal settings we record for the inferior, | |
587 | before we actually run the inferior. */ | |
588 | ||
589 | #define target_terminal_init() \ | |
0d06e24b | 590 | (*current_target.to_terminal_init) () |
c906108c SS |
591 | |
592 | /* Put the inferior's terminal settings into effect. | |
593 | This is preparation for starting or resuming the inferior. */ | |
594 | ||
595 | #define target_terminal_inferior() \ | |
0d06e24b | 596 | (*current_target.to_terminal_inferior) () |
c906108c SS |
597 | |
598 | /* Put some of our terminal settings into effect, | |
599 | enough to get proper results from our output, | |
600 | but do not change into or out of RAW mode | |
601 | so that no input is discarded. | |
602 | ||
603 | After doing this, either terminal_ours or terminal_inferior | |
604 | should be called to get back to a normal state of affairs. */ | |
605 | ||
606 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 607 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
608 | |
609 | /* Put our terminal settings into effect. | |
610 | First record the inferior's terminal settings | |
611 | so they can be restored properly later. */ | |
612 | ||
613 | #define target_terminal_ours() \ | |
0d06e24b | 614 | (*current_target.to_terminal_ours) () |
c906108c SS |
615 | |
616 | /* Print useful information about our terminal status, if such a thing | |
617 | exists. */ | |
618 | ||
619 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 620 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
621 | |
622 | /* Kill the inferior process. Make it go away. */ | |
623 | ||
624 | #define target_kill() \ | |
0d06e24b | 625 | (*current_target.to_kill) () |
c906108c | 626 | |
0d06e24b JM |
627 | /* Load an executable file into the target process. This is expected |
628 | to not only bring new code into the target process, but also to | |
629 | update GDB's symbol tables to match. */ | |
c906108c | 630 | |
11cf8741 | 631 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
632 | |
633 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
634 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
635 | symbol should be returned. The result is 0 if successful, nonzero | |
636 | if the symbol does not exist in the target environment. This | |
637 | function should not call error() if communication with the target | |
638 | is interrupted, since it is called from symbol reading, but should | |
639 | return nonzero, possibly doing a complain(). */ | |
c906108c | 640 | |
0d06e24b JM |
641 | #define target_lookup_symbol(name, addrp) \ |
642 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c SS |
643 | |
644 | /* Start an inferior process and set inferior_pid to its pid. | |
645 | EXEC_FILE is the file to run. | |
646 | ALLARGS is a string containing the arguments to the program. | |
647 | ENV is the environment vector to pass. Errors reported with error(). | |
648 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 649 | |
c906108c | 650 | #define target_create_inferior(exec_file, args, env) \ |
0d06e24b | 651 | (*current_target.to_create_inferior) (exec_file, args, env) |
c906108c SS |
652 | |
653 | ||
654 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
655 | notification of inferior events such as fork and vork immediately | |
656 | after the inferior is created. (This because of how gdb gets an | |
657 | inferior created via invoking a shell to do it. In such a scenario, | |
658 | if the shell init file has commands in it, the shell will fork and | |
659 | exec for each of those commands, and we will see each such fork | |
660 | event. Very bad.) | |
c5aa993b | 661 | |
0d06e24b JM |
662 | Such targets will supply an appropriate definition for this function. */ |
663 | ||
c906108c | 664 | #define target_post_startup_inferior(pid) \ |
0d06e24b | 665 | (*current_target.to_post_startup_inferior) (pid) |
c906108c SS |
666 | |
667 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
668 | some synchronization between gdb and the new inferior process, PID. */ |
669 | ||
c906108c | 670 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 671 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c SS |
672 | |
673 | /* An inferior process has been created via a fork() or similar | |
674 | system call. This function will clone the debugger, then ensure | |
675 | that CHILD_PID is attached to by that debugger. | |
676 | ||
677 | FOLLOWED_CHILD is set TRUE on return *for the clone debugger only*, | |
678 | and FALSE otherwise. (The original and clone debuggers can use this | |
679 | to determine which they are, if need be.) | |
680 | ||
681 | (This is not a terribly useful feature without a GUI to prevent | |
0d06e24b JM |
682 | the two debuggers from competing for shell input.) */ |
683 | ||
c906108c | 684 | #define target_clone_and_follow_inferior(child_pid,followed_child) \ |
0d06e24b | 685 | (*current_target.to_clone_and_follow_inferior) (child_pid, followed_child) |
c906108c SS |
686 | |
687 | /* This operation is intended to be used as the last in a sequence of | |
688 | steps taken when following both parent and child of a fork. This | |
689 | is used by a clone of the debugger, which will follow the child. | |
690 | ||
691 | The original debugger has detached from this process, and the | |
692 | clone has attached to it. | |
693 | ||
694 | On some targets, this requires a bit of cleanup to make it work | |
0d06e24b JM |
695 | correctly. */ |
696 | ||
c906108c | 697 | #define target_post_follow_inferior_by_clone() \ |
0d06e24b JM |
698 | (*current_target.to_post_follow_inferior_by_clone) () |
699 | ||
700 | /* On some targets, we can catch an inferior fork or vfork event when | |
701 | it occurs. These functions insert/remove an already-created | |
702 | catchpoint for such events. */ | |
c906108c | 703 | |
c906108c | 704 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 705 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
706 | |
707 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 708 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
709 | |
710 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 711 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
712 | |
713 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 714 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c SS |
715 | |
716 | /* Returns TRUE if PID has invoked the fork() system call. And, | |
717 | also sets CHILD_PID to the process id of the other ("child") | |
0d06e24b JM |
718 | inferior process that was created by that call. */ |
719 | ||
c906108c | 720 | #define target_has_forked(pid,child_pid) \ |
0d06e24b JM |
721 | (*current_target.to_has_forked) (pid,child_pid) |
722 | ||
723 | /* Returns TRUE if PID has invoked the vfork() system call. And, | |
724 | also sets CHILD_PID to the process id of the other ("child") | |
725 | inferior process that was created by that call. */ | |
c906108c | 726 | |
c906108c | 727 | #define target_has_vforked(pid,child_pid) \ |
0d06e24b | 728 | (*current_target.to_has_vforked) (pid,child_pid) |
c906108c SS |
729 | |
730 | /* Some platforms (such as pre-10.20 HP-UX) don't allow us to do | |
731 | anything to a vforked child before it subsequently calls exec(). | |
732 | On such platforms, we say that the debugger cannot "follow" the | |
733 | child until it has vforked. | |
734 | ||
735 | This function should be defined to return 1 by those targets | |
736 | which can allow the debugger to immediately follow a vforked | |
0d06e24b JM |
737 | child, and 0 if they cannot. */ |
738 | ||
c906108c | 739 | #define target_can_follow_vfork_prior_to_exec() \ |
0d06e24b | 740 | (*current_target.to_can_follow_vfork_prior_to_exec) () |
c906108c SS |
741 | |
742 | /* An inferior process has been created via a vfork() system call. | |
743 | The debugger has followed the parent, the child, or both. The | |
744 | process of setting up for that follow may have required some | |
745 | target-specific trickery to track the sequence of reported events. | |
746 | If so, this function should be defined by those targets that | |
747 | require the debugger to perform cleanup or initialization after | |
0d06e24b JM |
748 | the vfork follow. */ |
749 | ||
c906108c | 750 | #define target_post_follow_vfork(parent_pid,followed_parent,child_pid,followed_child) \ |
0d06e24b | 751 | (*current_target.to_post_follow_vfork) (parent_pid,followed_parent,child_pid,followed_child) |
c906108c SS |
752 | |
753 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
754 | occurs. These functions insert/remove an already-created |
755 | catchpoint for such events. */ | |
756 | ||
c906108c | 757 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 758 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 759 | |
c906108c | 760 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 761 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c SS |
762 | |
763 | /* Returns TRUE if PID has invoked a flavor of the exec() system call. | |
0d06e24b JM |
764 | And, also sets EXECD_PATHNAME to the pathname of the executable |
765 | file that was passed to exec(), and is now being executed. */ | |
766 | ||
c906108c | 767 | #define target_has_execd(pid,execd_pathname) \ |
0d06e24b | 768 | (*current_target.to_has_execd) (pid,execd_pathname) |
c906108c SS |
769 | |
770 | /* Returns the number of exec events that are reported when a process | |
771 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
772 | events are being reported. */ |
773 | ||
c906108c | 774 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 775 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c SS |
776 | |
777 | /* Returns TRUE if PID has reported a syscall event. And, also sets | |
778 | KIND to the appropriate TARGET_WAITKIND_, and sets SYSCALL_ID to | |
0d06e24b JM |
779 | the unique integer ID of the syscall. */ |
780 | ||
c906108c | 781 | #define target_has_syscall_event(pid,kind,syscall_id) \ |
0d06e24b | 782 | (*current_target.to_has_syscall_event) (pid,kind,syscall_id) |
c906108c SS |
783 | |
784 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the | |
0d06e24b JM |
785 | exit code of PID, if any. */ |
786 | ||
c906108c | 787 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 788 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
789 | |
790 | /* The debugger has completed a blocking wait() call. There is now | |
0d06e24b | 791 | some process event that must be processed. This function should |
c906108c | 792 | be defined by those targets that require the debugger to perform |
0d06e24b | 793 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
794 | |
795 | /* The inferior process has died. Do what is right. */ | |
796 | ||
797 | #define target_mourn_inferior() \ | |
0d06e24b | 798 | (*current_target.to_mourn_inferior) () |
c906108c SS |
799 | |
800 | /* Does target have enough data to do a run or attach command? */ | |
801 | ||
802 | #define target_can_run(t) \ | |
0d06e24b | 803 | ((t)->to_can_run) () |
c906108c SS |
804 | |
805 | /* post process changes to signal handling in the inferior. */ | |
806 | ||
807 | #define target_notice_signals(pid) \ | |
0d06e24b | 808 | (*current_target.to_notice_signals) (pid) |
c906108c SS |
809 | |
810 | /* Check to see if a thread is still alive. */ | |
811 | ||
812 | #define target_thread_alive(pid) \ | |
0d06e24b | 813 | (*current_target.to_thread_alive) (pid) |
c906108c | 814 | |
b83266a0 SS |
815 | /* Query for new threads and add them to the thread list. */ |
816 | ||
817 | #define target_find_new_threads() \ | |
0d06e24b | 818 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 819 | |
0d06e24b JM |
820 | /* Make target stop in a continuable fashion. (For instance, under |
821 | Unix, this should act like SIGSTOP). This function is normally | |
822 | used by GUIs to implement a stop button. */ | |
c906108c SS |
823 | |
824 | #define target_stop current_target.to_stop | |
825 | ||
826 | /* Queries the target side for some information. The first argument is a | |
827 | letter specifying the type of the query, which is used to determine who | |
828 | should process it. The second argument is a string that specifies which | |
829 | information is desired and the third is a buffer that carries back the | |
830 | response from the target side. The fourth parameter is the size of the | |
0d06e24b | 831 | output buffer supplied. */ |
c5aa993b | 832 | |
c906108c | 833 | #define target_query(query_type, query, resp_buffer, bufffer_size) \ |
0d06e24b | 834 | (*current_target.to_query) (query_type, query, resp_buffer, bufffer_size) |
c906108c | 835 | |
96baa820 JM |
836 | /* Send the specified COMMAND to the target's monitor |
837 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 838 | placed in OUTBUF. */ |
96baa820 JM |
839 | |
840 | #define target_rcmd(command, outbuf) \ | |
841 | (*current_target.to_rcmd) (command, outbuf) | |
842 | ||
843 | ||
c906108c SS |
844 | /* Get the symbol information for a breakpointable routine called when |
845 | an exception event occurs. | |
846 | Intended mainly for C++, and for those | |
847 | platforms/implementations where such a callback mechanism is available, | |
848 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 849 | different mechanisms for debugging exceptions. */ |
c906108c SS |
850 | |
851 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 852 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 853 | |
0d06e24b | 854 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 855 | |
c906108c | 856 | #define target_get_current_exception_event() \ |
0d06e24b | 857 | (*current_target.to_get_current_exception_event) () |
c906108c SS |
858 | |
859 | /* Pointer to next target in the chain, e.g. a core file and an exec file. */ | |
860 | ||
861 | #define target_next \ | |
0d06e24b | 862 | (current_target.to_next) |
c906108c SS |
863 | |
864 | /* Does the target include all of memory, or only part of it? This | |
865 | determines whether we look up the target chain for other parts of | |
866 | memory if this target can't satisfy a request. */ | |
867 | ||
868 | #define target_has_all_memory \ | |
0d06e24b | 869 | (current_target.to_has_all_memory) |
c906108c SS |
870 | |
871 | /* Does the target include memory? (Dummy targets don't.) */ | |
872 | ||
873 | #define target_has_memory \ | |
0d06e24b | 874 | (current_target.to_has_memory) |
c906108c SS |
875 | |
876 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
877 | we start a process.) */ | |
c5aa993b | 878 | |
c906108c | 879 | #define target_has_stack \ |
0d06e24b | 880 | (current_target.to_has_stack) |
c906108c SS |
881 | |
882 | /* Does the target have registers? (Exec files don't.) */ | |
883 | ||
884 | #define target_has_registers \ | |
0d06e24b | 885 | (current_target.to_has_registers) |
c906108c SS |
886 | |
887 | /* Does the target have execution? Can we make it jump (through | |
888 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
889 | way, it needs to check whether an inferior actually exists. | |
890 | remote-udi.c and probably other targets can be the current target | |
891 | when the inferior doesn't actually exist at the moment. Right now | |
892 | this just tells us whether this target is *capable* of execution. */ | |
893 | ||
894 | #define target_has_execution \ | |
0d06e24b | 895 | (current_target.to_has_execution) |
c906108c SS |
896 | |
897 | /* Can the target support the debugger control of thread execution? | |
898 | a) Can it lock the thread scheduler? | |
899 | b) Can it switch the currently running thread? */ | |
900 | ||
901 | #define target_can_lock_scheduler \ | |
0d06e24b | 902 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
903 | |
904 | #define target_can_switch_threads \ | |
0d06e24b | 905 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 906 | |
6426a772 JM |
907 | /* Can the target support asynchronous execution? */ |
908 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
909 | ||
910 | /* Is the target in asynchronous execution mode? */ | |
911 | #define target_is_async_p() (current_target.to_is_async_p()) | |
912 | ||
913 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
914 | #define target_async(CALLBACK,CONTEXT) \ |
915 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 916 | |
ed9a39eb JM |
917 | /* This is to be used ONLY within run_stack_dummy(). It |
918 | provides a workaround, to have inferior function calls done in | |
919 | sychronous mode, even though the target is asynchronous. After | |
920 | target_async_mask(0) is called, calls to target_can_async_p() will | |
921 | return FALSE , so that target_resume() will not try to start the | |
922 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
923 | restore the previous nature of the target, by calling | |
924 | target_async_mask(1). After that, target_can_async_p() will return | |
925 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. | |
926 | ||
927 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
928 | the turning async on and off to the single execution commands, | |
0d06e24b | 929 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
930 | |
931 | #define target_async_mask_value \ | |
0d06e24b | 932 | (current_target.to_async_mask_value) |
ed9a39eb JM |
933 | |
934 | extern int target_async_mask (int mask); | |
935 | ||
a14ed312 | 936 | extern void target_link (char *, CORE_ADDR *); |
c906108c SS |
937 | |
938 | /* Converts a process id to a string. Usually, the string just contains | |
939 | `process xyz', but on some systems it may contain | |
940 | `process xyz thread abc'. */ | |
941 | ||
ed9a39eb JM |
942 | #undef target_pid_to_str |
943 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
944 | |
945 | #ifndef target_tid_to_str | |
946 | #define target_tid_to_str(PID) \ | |
0d06e24b | 947 | target_pid_to_str (PID) |
a14ed312 | 948 | extern char *normal_pid_to_str (int pid); |
c906108c | 949 | #endif |
c5aa993b | 950 | |
0d06e24b JM |
951 | /* Return a short string describing extra information about PID, |
952 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
953 | is okay. */ | |
954 | ||
955 | #define target_extra_thread_info(TP) \ | |
956 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 957 | |
11cf8741 JM |
958 | /* |
959 | * New Objfile Event Hook: | |
960 | * | |
961 | * Sometimes a GDB component wants to get notified whenever a new | |
962 | * objfile is loaded. Mainly this is used by thread-debugging | |
963 | * implementations that need to know when symbols for the target | |
964 | * thread implemenation are available. | |
965 | * | |
966 | * The old way of doing this is to define a macro 'target_new_objfile' | |
967 | * that points to the function that you want to be called on every | |
968 | * objfile/shlib load. | |
969 | * | |
970 | * The new way is to grab the function pointer, 'target_new_objfile_hook', | |
971 | * and point it to the function that you want to be called on every | |
972 | * objfile/shlib load. | |
973 | * | |
974 | * If multiple clients are willing to be cooperative, they can each | |
975 | * save a pointer to the previous value of target_new_objfile_hook | |
976 | * before modifying it, and arrange for their function to call the | |
977 | * previous function in the chain. In that way, multiple clients | |
978 | * can receive this notification (something like with signal handlers). | |
979 | */ | |
c906108c | 980 | |
507f3c78 | 981 | extern void (*target_new_objfile_hook) (struct objfile *); |
c906108c SS |
982 | |
983 | #ifndef target_pid_or_tid_to_str | |
984 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 985 | target_pid_to_str (ID) |
c906108c SS |
986 | #endif |
987 | ||
988 | /* Attempts to find the pathname of the executable file | |
989 | that was run to create a specified process. | |
990 | ||
991 | The process PID must be stopped when this operation is used. | |
c5aa993b | 992 | |
c906108c SS |
993 | If the executable file cannot be determined, NULL is returned. |
994 | ||
995 | Else, a pointer to a character string containing the pathname | |
996 | is returned. This string should be copied into a buffer by | |
997 | the client if the string will not be immediately used, or if | |
0d06e24b | 998 | it must persist. */ |
c906108c SS |
999 | |
1000 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 1001 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 1002 | |
9d8a64cb | 1003 | /* Hook to call target-dependent code after reading in a new symbol table. */ |
c906108c SS |
1004 | |
1005 | #ifndef TARGET_SYMFILE_POSTREAD | |
1006 | #define TARGET_SYMFILE_POSTREAD(OBJFILE) | |
1007 | #endif | |
1008 | ||
9d8a64cb | 1009 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
1010 | started. */ |
1011 | ||
1012 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
1013 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
1014 | #endif | |
1015 | ||
1016 | /* Hardware watchpoint interfaces. */ | |
1017 | ||
1018 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
1019 | write). */ | |
1020 | ||
1021 | #ifndef STOPPED_BY_WATCHPOINT | |
1022 | #define STOPPED_BY_WATCHPOINT(w) 0 | |
1023 | #endif | |
1024 | ||
1025 | /* HP-UX supplies these operations, which respectively disable and enable | |
1026 | the memory page-protections that are used to implement hardware watchpoints | |
0d06e24b JM |
1027 | on that platform. See wait_for_inferior's use of these. */ |
1028 | ||
c906108c SS |
1029 | #if !defined(TARGET_DISABLE_HW_WATCHPOINTS) |
1030 | #define TARGET_DISABLE_HW_WATCHPOINTS(pid) | |
1031 | #endif | |
1032 | ||
1033 | #if !defined(TARGET_ENABLE_HW_WATCHPOINTS) | |
1034 | #define TARGET_ENABLE_HW_WATCHPOINTS(pid) | |
1035 | #endif | |
1036 | ||
0d06e24b | 1037 | /* Provide defaults for systems that don't support hardware watchpoints. */ |
c906108c SS |
1038 | |
1039 | #ifndef TARGET_HAS_HARDWARE_WATCHPOINTS | |
1040 | ||
1041 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
1042 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
1043 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
1044 | (including this one?). OTHERTYPE is who knows what... */ | |
1045 | ||
1046 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0 | |
1047 | ||
1048 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
1049 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \ | |
6ab3a9c9 | 1050 | ((LONGEST)(byte_count) <= REGISTER_SIZE) |
c906108c SS |
1051 | #endif |
1052 | ||
1053 | /* However, some addresses may not be profitable to use hardware to watch, | |
1054 | or may be difficult to understand when the addressed object is out of | |
1055 | scope, and hence should be unwatched. On some targets, this may have | |
1056 | severe performance penalties, such that we might as well use regular | |
1057 | watchpoints, and save (possibly precious) hardware watchpoints for other | |
0d06e24b JM |
1058 | locations. */ |
1059 | ||
c906108c SS |
1060 | #if !defined(TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT) |
1061 | #define TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT(pid,start,len) 0 | |
1062 | #endif | |
1063 | ||
1064 | ||
1065 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1066 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1067 | success, non-zero for failure. */ | |
1068 | ||
1069 | #define target_remove_watchpoint(ADDR,LEN,TYPE) -1 | |
1070 | #define target_insert_watchpoint(ADDR,LEN,TYPE) -1 | |
1071 | ||
1072 | #endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */ | |
1073 | ||
1074 | #ifndef target_insert_hw_breakpoint | |
1075 | #define target_remove_hw_breakpoint(ADDR,SHADOW) -1 | |
1076 | #define target_insert_hw_breakpoint(ADDR,SHADOW) -1 | |
1077 | #endif | |
1078 | ||
1079 | #ifndef target_stopped_data_address | |
1080 | #define target_stopped_data_address() 0 | |
1081 | #endif | |
1082 | ||
1083 | /* If defined, then we need to decr pc by this much after a hardware break- | |
1084 | point. Presumably this overrides DECR_PC_AFTER_BREAK... */ | |
1085 | ||
1086 | #ifndef DECR_PC_AFTER_HW_BREAK | |
1087 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1088 | #endif | |
1089 | ||
1090 | /* Sometimes gdb may pick up what appears to be a valid target address | |
1091 | from a minimal symbol, but the value really means, essentially, | |
1092 | "This is an index into a table which is populated when the inferior | |
0d06e24b JM |
1093 | is run. Therefore, do not attempt to use this as a PC." */ |
1094 | ||
c906108c SS |
1095 | #if !defined(PC_REQUIRES_RUN_BEFORE_USE) |
1096 | #define PC_REQUIRES_RUN_BEFORE_USE(pc) (0) | |
1097 | #endif | |
1098 | ||
1099 | /* This will only be defined by a target that supports catching vfork events, | |
1100 | such as HP-UX. | |
1101 | ||
1102 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1103 | child process after it has exec'd, causes the parent process to resume as | |
1104 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1105 | define this to a function that prevents that from happening. */ |
c906108c SS |
1106 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1107 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1108 | #endif | |
1109 | ||
1110 | /* This will only be defined by a target that supports catching vfork events, | |
1111 | such as HP-UX. | |
1112 | ||
1113 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1114 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1115 | vfork event will be delivered to us. */ |
1116 | ||
c906108c SS |
1117 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1118 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1119 | #endif | |
1120 | ||
1121 | /* Routines for maintenance of the target structures... | |
1122 | ||
1123 | add_target: Add a target to the list of all possible targets. | |
1124 | ||
1125 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1126 | targets, within its particular stratum of the stack. Result |
1127 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1128 | should warn user). | |
c906108c SS |
1129 | |
1130 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1131 | no matter where it is on the list. Returns 0 if no |
1132 | change, 1 if removed from stack. | |
c906108c | 1133 | |
c5aa993b | 1134 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1135 | |
a14ed312 | 1136 | extern void add_target (struct target_ops *); |
c906108c | 1137 | |
a14ed312 | 1138 | extern int push_target (struct target_ops *); |
c906108c | 1139 | |
a14ed312 | 1140 | extern int unpush_target (struct target_ops *); |
c906108c | 1141 | |
a14ed312 | 1142 | extern void target_preopen (int); |
c906108c | 1143 | |
a14ed312 | 1144 | extern void pop_target (void); |
c906108c SS |
1145 | |
1146 | /* Struct section_table maps address ranges to file sections. It is | |
1147 | mostly used with BFD files, but can be used without (e.g. for handling | |
1148 | raw disks, or files not in formats handled by BFD). */ | |
1149 | ||
c5aa993b JM |
1150 | struct section_table |
1151 | { | |
1152 | CORE_ADDR addr; /* Lowest address in section */ | |
1153 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1154 | |
c5aa993b | 1155 | sec_ptr the_bfd_section; |
c906108c | 1156 | |
c5aa993b JM |
1157 | bfd *bfd; /* BFD file pointer */ |
1158 | }; | |
c906108c SS |
1159 | |
1160 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
1161 | Returns 0 if OK, 1 on error. */ | |
1162 | ||
1163 | extern int | |
a14ed312 | 1164 | build_section_table (bfd *, struct section_table **, struct section_table **); |
c906108c SS |
1165 | |
1166 | /* From mem-break.c */ | |
1167 | ||
a14ed312 | 1168 | extern int memory_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 1169 | |
a14ed312 | 1170 | extern int memory_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 1171 | |
a14ed312 | 1172 | extern int default_memory_remove_breakpoint (CORE_ADDR, char *); |
917317f4 | 1173 | |
a14ed312 | 1174 | extern int default_memory_insert_breakpoint (CORE_ADDR, char *); |
917317f4 | 1175 | |
c906108c | 1176 | extern breakpoint_from_pc_fn memory_breakpoint_from_pc; |
c906108c SS |
1177 | |
1178 | ||
1179 | /* From target.c */ | |
1180 | ||
a14ed312 | 1181 | extern void initialize_targets (void); |
c906108c | 1182 | |
a14ed312 | 1183 | extern void noprocess (void); |
c906108c | 1184 | |
a14ed312 | 1185 | extern void find_default_attach (char *, int); |
c906108c | 1186 | |
a14ed312 | 1187 | extern void find_default_require_attach (char *, int); |
c906108c | 1188 | |
a14ed312 | 1189 | extern void find_default_require_detach (int, char *, int); |
c906108c | 1190 | |
a14ed312 | 1191 | extern void find_default_create_inferior (char *, char *, char **); |
c906108c | 1192 | |
a14ed312 | 1193 | extern void find_default_clone_and_follow_inferior (int, int *); |
c906108c | 1194 | |
a14ed312 | 1195 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1196 | |
a14ed312 | 1197 | extern struct target_ops *find_core_target (void); |
6426a772 | 1198 | |
a14ed312 | 1199 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb JM |
1200 | |
1201 | extern int | |
a14ed312 | 1202 | target_resize_to_sections (struct target_ops *target, int num_added); |
07cd4b97 JB |
1203 | |
1204 | extern void remove_target_sections (bfd *abfd); | |
1205 | ||
c906108c SS |
1206 | \f |
1207 | /* Stuff that should be shared among the various remote targets. */ | |
1208 | ||
1209 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1210 | information (higher values, more information). */ | |
1211 | extern int remote_debug; | |
1212 | ||
1213 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1214 | extern int baud_rate; | |
1215 | /* Timeout limit for response from target. */ | |
1216 | extern int remote_timeout; | |
1217 | ||
c906108c SS |
1218 | \f |
1219 | /* Functions for helping to write a native target. */ | |
1220 | ||
1221 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1222 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1223 | |
c2d11a7d | 1224 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1225 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1226 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1227 | to the shorter target_signal_p() because it is far less ambigious. | |
1228 | In this context ``target_signal'' refers to GDB's internal | |
1229 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1230 | refers to the target operating system's signal. Confused? */ |
1231 | ||
c2d11a7d JM |
1232 | extern int target_signal_to_host_p (enum target_signal signo); |
1233 | ||
1234 | /* Convert between host signal numbers and enum target_signal's. | |
1235 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1236 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1237 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1238 | refering to the target operating system's signal numbering. | |
1239 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1240 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1241 | internal representation of a target operating system's signal. */ |
1242 | ||
a14ed312 KB |
1243 | extern enum target_signal target_signal_from_host (int); |
1244 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1245 | |
1246 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1247 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1248 | |
1249 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1250 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1251 | \f |
1252 | /* Imported from machine dependent code */ | |
1253 | ||
c906108c | 1254 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1255 | void target_ignore (void); |
c906108c SS |
1256 | |
1257 | /* Macro for getting target's idea of a frame pointer. | |
1258 | FIXME: GDB's whole scheme for dealing with "frames" and | |
1259 | "frame pointers" needs a serious shakedown. */ | |
1260 | #ifndef TARGET_VIRTUAL_FRAME_POINTER | |
1261 | #define TARGET_VIRTUAL_FRAME_POINTER(ADDR, REGP, OFFP) \ | |
1262 | do { *(REGP) = FP_REGNUM; *(OFFP) = 0; } while (0) | |
1263 | #endif /* TARGET_VIRTUAL_FRAME_POINTER */ | |
1264 | ||
c5aa993b | 1265 | #endif /* !defined (TARGET_H) */ |