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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 | 190 | { |
258b763a | 191 | struct target_ops *beneath; /* To the target under this one. */ |
c5aa993b JM |
192 | char *to_shortname; /* Name this target type */ |
193 | char *to_longname; /* Name for printing */ | |
194 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 195 | newline, and starts with a one-line descrip- |
0d06e24b | 196 | tion (probably similar to to_longname). */ |
507f3c78 KB |
197 | void (*to_open) (char *, int); |
198 | void (*to_close) (int); | |
199 | void (*to_attach) (char *, int); | |
200 | void (*to_post_attach) (int); | |
507f3c78 | 201 | void (*to_detach) (char *, int); |
6ad8ae5c | 202 | void (*to_disconnect) (char *, int); |
39f77062 KB |
203 | void (*to_resume) (ptid_t, int, enum target_signal); |
204 | ptid_t (*to_wait) (ptid_t, struct target_waitstatus *); | |
205 | void (*to_post_wait) (ptid_t, int); | |
507f3c78 KB |
206 | void (*to_fetch_registers) (int); |
207 | void (*to_store_registers) (int); | |
208 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
209 | |
210 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
211 | target address MEMADDR. If WRITE, transfer them to the target, else | |
212 | transfer them from the target. TARGET is the target from which we | |
213 | get this function. | |
214 | ||
215 | Return value, N, is one of the following: | |
216 | ||
217 | 0 means that we can't handle this. If errno has been set, it is the | |
218 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
219 | ||
220 | positive (call it N) means that we have transferred N bytes | |
221 | starting at MEMADDR. We might be able to handle more bytes | |
222 | beyond this length, but no promises. | |
223 | ||
224 | negative (call its absolute value N) means that we cannot | |
225 | transfer right at MEMADDR, but we could transfer at least | |
226 | something at MEMADDR + N. */ | |
227 | ||
507f3c78 | 228 | int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, |
29e57380 C |
229 | int len, int write, |
230 | struct mem_attrib *attrib, | |
231 | struct target_ops *target); | |
c906108c | 232 | |
507f3c78 KB |
233 | void (*to_files_info) (struct target_ops *); |
234 | int (*to_insert_breakpoint) (CORE_ADDR, char *); | |
235 | int (*to_remove_breakpoint) (CORE_ADDR, char *); | |
ccaa32c7 GS |
236 | int (*to_can_use_hw_breakpoint) (int, int, int); |
237 | int (*to_insert_hw_breakpoint) (CORE_ADDR, char *); | |
238 | int (*to_remove_hw_breakpoint) (CORE_ADDR, char *); | |
239 | int (*to_remove_watchpoint) (CORE_ADDR, int, int); | |
240 | int (*to_insert_watchpoint) (CORE_ADDR, int, int); | |
241 | int (*to_stopped_by_watchpoint) (void); | |
7df1a324 | 242 | int to_have_continuable_watchpoint; |
ccaa32c7 GS |
243 | CORE_ADDR (*to_stopped_data_address) (void); |
244 | int (*to_region_size_ok_for_hw_watchpoint) (int); | |
507f3c78 KB |
245 | void (*to_terminal_init) (void); |
246 | void (*to_terminal_inferior) (void); | |
247 | void (*to_terminal_ours_for_output) (void); | |
248 | void (*to_terminal_ours) (void); | |
a790ad35 | 249 | void (*to_terminal_save_ours) (void); |
507f3c78 KB |
250 | void (*to_terminal_info) (char *, int); |
251 | void (*to_kill) (void); | |
252 | void (*to_load) (char *, int); | |
253 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
254 | void (*to_create_inferior) (char *, char *, char **); | |
39f77062 | 255 | void (*to_post_startup_inferior) (ptid_t); |
507f3c78 | 256 | void (*to_acknowledge_created_inferior) (int); |
507f3c78 KB |
257 | int (*to_insert_fork_catchpoint) (int); |
258 | int (*to_remove_fork_catchpoint) (int); | |
259 | int (*to_insert_vfork_catchpoint) (int); | |
260 | int (*to_remove_vfork_catchpoint) (int); | |
6604731b | 261 | int (*to_follow_fork) (int); |
507f3c78 KB |
262 | int (*to_insert_exec_catchpoint) (int); |
263 | int (*to_remove_exec_catchpoint) (int); | |
507f3c78 | 264 | int (*to_reported_exec_events_per_exec_call) (void); |
507f3c78 KB |
265 | int (*to_has_exited) (int, int, int *); |
266 | void (*to_mourn_inferior) (void); | |
267 | int (*to_can_run) (void); | |
39f77062 KB |
268 | void (*to_notice_signals) (ptid_t ptid); |
269 | int (*to_thread_alive) (ptid_t ptid); | |
507f3c78 | 270 | void (*to_find_new_threads) (void); |
39f77062 | 271 | char *(*to_pid_to_str) (ptid_t); |
507f3c78 KB |
272 | char *(*to_extra_thread_info) (struct thread_info *); |
273 | void (*to_stop) (void); | |
274 | int (*to_query) (int /*char */ , char *, char *, int *); | |
d9fcf2fb | 275 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
276 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
277 | exception_event_kind, | |
278 | int); | |
279 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
280 | char *(*to_pid_to_exec_file) (int pid); | |
c5aa993b | 281 | enum strata to_stratum; |
c5aa993b JM |
282 | int to_has_all_memory; |
283 | int to_has_memory; | |
284 | int to_has_stack; | |
285 | int to_has_registers; | |
286 | int to_has_execution; | |
287 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
288 | struct section_table |
289 | *to_sections; | |
290 | struct section_table | |
291 | *to_sections_end; | |
6426a772 JM |
292 | /* ASYNC target controls */ |
293 | int (*to_can_async_p) (void); | |
294 | int (*to_is_async_p) (void); | |
0d06e24b JM |
295 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
296 | void *context); | |
ed9a39eb | 297 | int to_async_mask_value; |
be4d1333 MS |
298 | int (*to_find_memory_regions) (int (*) (CORE_ADDR, |
299 | unsigned long, | |
300 | int, int, int, | |
301 | void *), | |
302 | void *); | |
303 | char * (*to_make_corefile_notes) (bfd *, int *); | |
3f47be5c EZ |
304 | |
305 | /* Return the thread-local address at OFFSET in the | |
306 | thread-local storage for the thread PTID and the shared library | |
307 | or executable file given by OBJFILE. If that block of | |
308 | thread-local storage hasn't been allocated yet, this function | |
309 | may return an error. */ | |
310 | CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid, | |
311 | struct objfile *objfile, | |
312 | CORE_ADDR offset); | |
313 | ||
c5aa993b | 314 | int to_magic; |
0d06e24b JM |
315 | /* Need sub-structure for target machine related rather than comm related? |
316 | */ | |
c5aa993b | 317 | }; |
c906108c SS |
318 | |
319 | /* Magic number for checking ops size. If a struct doesn't end with this | |
320 | number, somebody changed the declaration but didn't change all the | |
321 | places that initialize one. */ | |
322 | ||
323 | #define OPS_MAGIC 3840 | |
324 | ||
325 | /* The ops structure for our "current" target process. This should | |
326 | never be NULL. If there is no target, it points to the dummy_target. */ | |
327 | ||
c5aa993b | 328 | extern struct target_ops current_target; |
c906108c | 329 | |
c906108c SS |
330 | /* Define easy words for doing these operations on our current target. */ |
331 | ||
332 | #define target_shortname (current_target.to_shortname) | |
333 | #define target_longname (current_target.to_longname) | |
334 | ||
335 | /* The open routine takes the rest of the parameters from the command, | |
336 | and (if successful) pushes a new target onto the stack. | |
337 | Targets should supply this routine, if only to provide an error message. */ | |
0d06e24b | 338 | |
4930751a C |
339 | #define target_open(name, from_tty) \ |
340 | do { \ | |
341 | dcache_invalidate (target_dcache); \ | |
342 | (*current_target.to_open) (name, from_tty); \ | |
343 | } while (0) | |
c906108c SS |
344 | |
345 | /* Does whatever cleanup is required for a target that we are no longer | |
346 | going to be calling. Argument says whether we are quitting gdb and | |
347 | should not get hung in case of errors, or whether we want a clean | |
348 | termination even if it takes a while. This routine is automatically | |
349 | always called just before a routine is popped off the target stack. | |
350 | Closing file descriptors and freeing memory are typical things it should | |
351 | do. */ | |
352 | ||
353 | #define target_close(quitting) \ | |
0d06e24b | 354 | (*current_target.to_close) (quitting) |
c906108c SS |
355 | |
356 | /* Attaches to a process on the target side. Arguments are as passed | |
357 | to the `attach' command by the user. This routine can be called | |
358 | when the target is not on the target-stack, if the target_can_run | |
359 | routine returns 1; in that case, it must push itself onto the stack. | |
360 | Upon exit, the target should be ready for normal operations, and | |
361 | should be ready to deliver the status of the process immediately | |
362 | (without waiting) to an upcoming target_wait call. */ | |
363 | ||
364 | #define target_attach(args, from_tty) \ | |
0d06e24b | 365 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
366 | |
367 | /* The target_attach operation places a process under debugger control, | |
368 | and stops the process. | |
369 | ||
370 | This operation provides a target-specific hook that allows the | |
0d06e24b | 371 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 372 | #define target_post_attach(pid) \ |
0d06e24b | 373 | (*current_target.to_post_attach) (pid) |
c906108c | 374 | |
c906108c SS |
375 | /* Takes a program previously attached to and detaches it. |
376 | The program may resume execution (some targets do, some don't) and will | |
377 | no longer stop on signals, etc. We better not have left any breakpoints | |
378 | in the program or it'll die when it hits one. ARGS is arguments | |
379 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
380 | says whether to be verbose or not. */ | |
381 | ||
a14ed312 | 382 | extern void target_detach (char *, int); |
c906108c | 383 | |
6ad8ae5c DJ |
384 | /* Disconnect from the current target without resuming it (leaving it |
385 | waiting for a debugger). */ | |
386 | ||
387 | extern void target_disconnect (char *, int); | |
388 | ||
39f77062 | 389 | /* Resume execution of the target process PTID. STEP says whether to |
c906108c SS |
390 | single-step or to run free; SIGGNAL is the signal to be given to |
391 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
392 | pass TARGET_SIGNAL_DEFAULT. */ | |
393 | ||
39f77062 | 394 | #define target_resume(ptid, step, siggnal) \ |
4930751a C |
395 | do { \ |
396 | dcache_invalidate(target_dcache); \ | |
39f77062 | 397 | (*current_target.to_resume) (ptid, step, siggnal); \ |
4930751a | 398 | } while (0) |
c906108c | 399 | |
b5a2688f AC |
400 | /* Wait for process pid to do something. PTID = -1 to wait for any |
401 | pid to do something. Return pid of child, or -1 in case of error; | |
c906108c | 402 | store status through argument pointer STATUS. Note that it is |
b5a2688f | 403 | _NOT_ OK to throw_exception() out of target_wait() without popping |
c906108c SS |
404 | the debugging target from the stack; GDB isn't prepared to get back |
405 | to the prompt with a debugging target but without the frame cache, | |
406 | stop_pc, etc., set up. */ | |
407 | ||
39f77062 KB |
408 | #define target_wait(ptid, status) \ |
409 | (*current_target.to_wait) (ptid, status) | |
c906108c SS |
410 | |
411 | /* The target_wait operation waits for a process event to occur, and | |
412 | thereby stop the process. | |
413 | ||
414 | On some targets, certain events may happen in sequences. gdb's | |
415 | correct response to any single event of such a sequence may require | |
416 | knowledge of what earlier events in the sequence have been seen. | |
417 | ||
418 | This operation provides a target-specific hook that allows the | |
0d06e24b | 419 | necessary bookkeeping to be performed to track such sequences. */ |
c906108c | 420 | |
39f77062 KB |
421 | #define target_post_wait(ptid, status) \ |
422 | (*current_target.to_post_wait) (ptid, status) | |
c906108c | 423 | |
17dee195 | 424 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
425 | |
426 | #define target_fetch_registers(regno) \ | |
0d06e24b | 427 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
428 | |
429 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
430 | It can store as many registers as it wants to, so target_prepare_to_store | |
431 | must have been previously called. Calls error() if there are problems. */ | |
432 | ||
433 | #define target_store_registers(regs) \ | |
0d06e24b | 434 | (*current_target.to_store_registers) (regs) |
c906108c SS |
435 | |
436 | /* Get ready to modify the registers array. On machines which store | |
437 | individual registers, this doesn't need to do anything. On machines | |
438 | which store all the registers in one fell swoop, this makes sure | |
439 | that REGISTERS contains all the registers from the program being | |
440 | debugged. */ | |
441 | ||
442 | #define target_prepare_to_store() \ | |
0d06e24b | 443 | (*current_target.to_prepare_to_store) () |
c906108c | 444 | |
4930751a C |
445 | extern DCACHE *target_dcache; |
446 | ||
29e57380 C |
447 | extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
448 | struct mem_attrib *attrib); | |
4930751a | 449 | |
a14ed312 | 450 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 451 | |
a14ed312 | 452 | extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 453 | |
4930751a | 454 | extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 455 | |
29e57380 C |
456 | extern int xfer_memory (CORE_ADDR, char *, int, int, |
457 | struct mem_attrib *, struct target_ops *); | |
c906108c | 458 | |
29e57380 C |
459 | extern int child_xfer_memory (CORE_ADDR, char *, int, int, |
460 | struct mem_attrib *, struct target_ops *); | |
c906108c | 461 | |
917317f4 JM |
462 | /* Make a single attempt at transfering LEN bytes. On a successful |
463 | transfer, the number of bytes actually transfered is returned and | |
464 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
465 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 466 | non-zero error indication. */ |
917317f4 | 467 | |
570b8f7c AC |
468 | extern int target_read_memory_partial (CORE_ADDR addr, char *buf, int len, |
469 | int *err); | |
917317f4 | 470 | |
570b8f7c AC |
471 | extern int target_write_memory_partial (CORE_ADDR addr, char *buf, int len, |
472 | int *err); | |
917317f4 | 473 | |
a14ed312 | 474 | extern char *child_pid_to_exec_file (int); |
c906108c | 475 | |
a14ed312 | 476 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
477 | |
478 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 479 | extern void child_post_attach (int); |
c906108c SS |
480 | #endif |
481 | ||
39f77062 | 482 | extern void child_post_wait (ptid_t, int); |
c906108c | 483 | |
39f77062 | 484 | extern void child_post_startup_inferior (ptid_t); |
c906108c | 485 | |
a14ed312 | 486 | extern void child_acknowledge_created_inferior (int); |
c906108c | 487 | |
a14ed312 | 488 | extern int child_insert_fork_catchpoint (int); |
c906108c | 489 | |
a14ed312 | 490 | extern int child_remove_fork_catchpoint (int); |
c906108c | 491 | |
a14ed312 | 492 | extern int child_insert_vfork_catchpoint (int); |
c906108c | 493 | |
a14ed312 | 494 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 495 | |
a14ed312 | 496 | extern void child_acknowledge_created_inferior (int); |
c906108c | 497 | |
6604731b | 498 | extern int child_follow_fork (int); |
c906108c | 499 | |
a14ed312 | 500 | extern int child_insert_exec_catchpoint (int); |
c906108c | 501 | |
a14ed312 | 502 | extern int child_remove_exec_catchpoint (int); |
c906108c | 503 | |
a14ed312 | 504 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 505 | |
a14ed312 | 506 | extern int child_has_exited (int, int, int *); |
c906108c | 507 | |
39f77062 | 508 | extern int child_thread_alive (ptid_t); |
c906108c | 509 | |
47932f85 DJ |
510 | /* From infrun.c. */ |
511 | ||
512 | extern int inferior_has_forked (int pid, int *child_pid); | |
513 | ||
514 | extern int inferior_has_vforked (int pid, int *child_pid); | |
515 | ||
516 | extern int inferior_has_execd (int pid, char **execd_pathname); | |
517 | ||
c906108c SS |
518 | /* From exec.c */ |
519 | ||
a14ed312 | 520 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
521 | |
522 | /* Print a line about the current target. */ | |
523 | ||
524 | #define target_files_info() \ | |
0d06e24b | 525 | (*current_target.to_files_info) (¤t_target) |
c906108c | 526 | |
aaab4dba AC |
527 | /* Insert a breakpoint at address ADDR in the target machine. SAVE is |
528 | a pointer to memory allocated for saving the target contents. It | |
529 | is guaranteed by the caller to be long enough to save the number of | |
530 | breakpoint bytes indicated by BREAKPOINT_FROM_PC. Result is 0 for | |
531 | success, or an errno value. */ | |
c906108c SS |
532 | |
533 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 534 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
535 | |
536 | /* Remove a breakpoint at address ADDR in the target machine. | |
537 | SAVE is a pointer to the same save area | |
538 | that was previously passed to target_insert_breakpoint. | |
539 | Result is 0 for success, or an errno value. */ | |
540 | ||
541 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 542 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
543 | |
544 | /* Initialize the terminal settings we record for the inferior, | |
545 | before we actually run the inferior. */ | |
546 | ||
547 | #define target_terminal_init() \ | |
0d06e24b | 548 | (*current_target.to_terminal_init) () |
c906108c SS |
549 | |
550 | /* Put the inferior's terminal settings into effect. | |
551 | This is preparation for starting or resuming the inferior. */ | |
552 | ||
553 | #define target_terminal_inferior() \ | |
0d06e24b | 554 | (*current_target.to_terminal_inferior) () |
c906108c SS |
555 | |
556 | /* Put some of our terminal settings into effect, | |
557 | enough to get proper results from our output, | |
558 | but do not change into or out of RAW mode | |
559 | so that no input is discarded. | |
560 | ||
561 | After doing this, either terminal_ours or terminal_inferior | |
562 | should be called to get back to a normal state of affairs. */ | |
563 | ||
564 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 565 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
566 | |
567 | /* Put our terminal settings into effect. | |
568 | First record the inferior's terminal settings | |
569 | so they can be restored properly later. */ | |
570 | ||
571 | #define target_terminal_ours() \ | |
0d06e24b | 572 | (*current_target.to_terminal_ours) () |
c906108c | 573 | |
a790ad35 SC |
574 | /* Save our terminal settings. |
575 | This is called from TUI after entering or leaving the curses | |
576 | mode. Since curses modifies our terminal this call is here | |
577 | to take this change into account. */ | |
578 | ||
579 | #define target_terminal_save_ours() \ | |
580 | (*current_target.to_terminal_save_ours) () | |
581 | ||
c906108c SS |
582 | /* Print useful information about our terminal status, if such a thing |
583 | exists. */ | |
584 | ||
585 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 586 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
587 | |
588 | /* Kill the inferior process. Make it go away. */ | |
589 | ||
590 | #define target_kill() \ | |
0d06e24b | 591 | (*current_target.to_kill) () |
c906108c | 592 | |
0d06e24b JM |
593 | /* Load an executable file into the target process. This is expected |
594 | to not only bring new code into the target process, but also to | |
595 | update GDB's symbol tables to match. */ | |
c906108c | 596 | |
11cf8741 | 597 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
598 | |
599 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
600 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
601 | symbol should be returned. The result is 0 if successful, nonzero | |
602 | if the symbol does not exist in the target environment. This | |
603 | function should not call error() if communication with the target | |
604 | is interrupted, since it is called from symbol reading, but should | |
605 | return nonzero, possibly doing a complain(). */ | |
c906108c | 606 | |
0d06e24b JM |
607 | #define target_lookup_symbol(name, addrp) \ |
608 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c | 609 | |
39f77062 | 610 | /* Start an inferior process and set inferior_ptid to its pid. |
c906108c SS |
611 | EXEC_FILE is the file to run. |
612 | ALLARGS is a string containing the arguments to the program. | |
613 | ENV is the environment vector to pass. Errors reported with error(). | |
614 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 615 | |
c906108c | 616 | #define target_create_inferior(exec_file, args, env) \ |
0d06e24b | 617 | (*current_target.to_create_inferior) (exec_file, args, env) |
c906108c SS |
618 | |
619 | ||
620 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
621 | notification of inferior events such as fork and vork immediately | |
622 | after the inferior is created. (This because of how gdb gets an | |
623 | inferior created via invoking a shell to do it. In such a scenario, | |
624 | if the shell init file has commands in it, the shell will fork and | |
625 | exec for each of those commands, and we will see each such fork | |
626 | event. Very bad.) | |
c5aa993b | 627 | |
0d06e24b JM |
628 | Such targets will supply an appropriate definition for this function. */ |
629 | ||
39f77062 KB |
630 | #define target_post_startup_inferior(ptid) \ |
631 | (*current_target.to_post_startup_inferior) (ptid) | |
c906108c SS |
632 | |
633 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
634 | some synchronization between gdb and the new inferior process, PID. */ |
635 | ||
c906108c | 636 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 637 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c | 638 | |
0d06e24b JM |
639 | /* On some targets, we can catch an inferior fork or vfork event when |
640 | it occurs. These functions insert/remove an already-created | |
641 | catchpoint for such events. */ | |
c906108c | 642 | |
c906108c | 643 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 644 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
645 | |
646 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 647 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
648 | |
649 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 650 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
651 | |
652 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 653 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c | 654 | |
6604731b DJ |
655 | /* If the inferior forks or vforks, this function will be called at |
656 | the next resume in order to perform any bookkeeping and fiddling | |
657 | necessary to continue debugging either the parent or child, as | |
658 | requested, and releasing the other. Information about the fork | |
659 | or vfork event is available via get_last_target_status (). | |
660 | This function returns 1 if the inferior should not be resumed | |
661 | (i.e. there is another event pending). */ | |
0d06e24b | 662 | |
6604731b DJ |
663 | #define target_follow_fork(follow_child) \ |
664 | (*current_target.to_follow_fork) (follow_child) | |
c906108c SS |
665 | |
666 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
667 | occurs. These functions insert/remove an already-created |
668 | catchpoint for such events. */ | |
669 | ||
c906108c | 670 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 671 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 672 | |
c906108c | 673 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 674 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c | 675 | |
c906108c SS |
676 | /* Returns the number of exec events that are reported when a process |
677 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
678 | events are being reported. */ |
679 | ||
c906108c | 680 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 681 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c | 682 | |
c906108c | 683 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the |
0d06e24b JM |
684 | exit code of PID, if any. */ |
685 | ||
c906108c | 686 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 687 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
688 | |
689 | /* The debugger has completed a blocking wait() call. There is now | |
0d06e24b | 690 | some process event that must be processed. This function should |
c906108c | 691 | be defined by those targets that require the debugger to perform |
0d06e24b | 692 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
693 | |
694 | /* The inferior process has died. Do what is right. */ | |
695 | ||
696 | #define target_mourn_inferior() \ | |
0d06e24b | 697 | (*current_target.to_mourn_inferior) () |
c906108c SS |
698 | |
699 | /* Does target have enough data to do a run or attach command? */ | |
700 | ||
701 | #define target_can_run(t) \ | |
0d06e24b | 702 | ((t)->to_can_run) () |
c906108c SS |
703 | |
704 | /* post process changes to signal handling in the inferior. */ | |
705 | ||
39f77062 KB |
706 | #define target_notice_signals(ptid) \ |
707 | (*current_target.to_notice_signals) (ptid) | |
c906108c SS |
708 | |
709 | /* Check to see if a thread is still alive. */ | |
710 | ||
39f77062 KB |
711 | #define target_thread_alive(ptid) \ |
712 | (*current_target.to_thread_alive) (ptid) | |
c906108c | 713 | |
b83266a0 SS |
714 | /* Query for new threads and add them to the thread list. */ |
715 | ||
716 | #define target_find_new_threads() \ | |
0d06e24b | 717 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 718 | |
0d06e24b JM |
719 | /* Make target stop in a continuable fashion. (For instance, under |
720 | Unix, this should act like SIGSTOP). This function is normally | |
721 | used by GUIs to implement a stop button. */ | |
c906108c SS |
722 | |
723 | #define target_stop current_target.to_stop | |
724 | ||
725 | /* Queries the target side for some information. The first argument is a | |
726 | letter specifying the type of the query, which is used to determine who | |
727 | should process it. The second argument is a string that specifies which | |
728 | information is desired and the third is a buffer that carries back the | |
729 | response from the target side. The fourth parameter is the size of the | |
0d06e24b | 730 | output buffer supplied. */ |
c5aa993b | 731 | |
c906108c | 732 | #define target_query(query_type, query, resp_buffer, bufffer_size) \ |
0d06e24b | 733 | (*current_target.to_query) (query_type, query, resp_buffer, bufffer_size) |
c906108c | 734 | |
96baa820 JM |
735 | /* Send the specified COMMAND to the target's monitor |
736 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 737 | placed in OUTBUF. */ |
96baa820 JM |
738 | |
739 | #define target_rcmd(command, outbuf) \ | |
740 | (*current_target.to_rcmd) (command, outbuf) | |
741 | ||
742 | ||
c906108c SS |
743 | /* Get the symbol information for a breakpointable routine called when |
744 | an exception event occurs. | |
745 | Intended mainly for C++, and for those | |
746 | platforms/implementations where such a callback mechanism is available, | |
747 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 748 | different mechanisms for debugging exceptions. */ |
c906108c SS |
749 | |
750 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 751 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 752 | |
0d06e24b | 753 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 754 | |
c906108c | 755 | #define target_get_current_exception_event() \ |
0d06e24b | 756 | (*current_target.to_get_current_exception_event) () |
c906108c | 757 | |
c906108c SS |
758 | /* Does the target include all of memory, or only part of it? This |
759 | determines whether we look up the target chain for other parts of | |
760 | memory if this target can't satisfy a request. */ | |
761 | ||
762 | #define target_has_all_memory \ | |
0d06e24b | 763 | (current_target.to_has_all_memory) |
c906108c SS |
764 | |
765 | /* Does the target include memory? (Dummy targets don't.) */ | |
766 | ||
767 | #define target_has_memory \ | |
0d06e24b | 768 | (current_target.to_has_memory) |
c906108c SS |
769 | |
770 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
771 | we start a process.) */ | |
c5aa993b | 772 | |
c906108c | 773 | #define target_has_stack \ |
0d06e24b | 774 | (current_target.to_has_stack) |
c906108c SS |
775 | |
776 | /* Does the target have registers? (Exec files don't.) */ | |
777 | ||
778 | #define target_has_registers \ | |
0d06e24b | 779 | (current_target.to_has_registers) |
c906108c SS |
780 | |
781 | /* Does the target have execution? Can we make it jump (through | |
782 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
783 | way, it needs to check whether an inferior actually exists. | |
784 | remote-udi.c and probably other targets can be the current target | |
785 | when the inferior doesn't actually exist at the moment. Right now | |
786 | this just tells us whether this target is *capable* of execution. */ | |
787 | ||
788 | #define target_has_execution \ | |
0d06e24b | 789 | (current_target.to_has_execution) |
c906108c SS |
790 | |
791 | /* Can the target support the debugger control of thread execution? | |
792 | a) Can it lock the thread scheduler? | |
793 | b) Can it switch the currently running thread? */ | |
794 | ||
795 | #define target_can_lock_scheduler \ | |
0d06e24b | 796 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
797 | |
798 | #define target_can_switch_threads \ | |
0d06e24b | 799 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 800 | |
6426a772 JM |
801 | /* Can the target support asynchronous execution? */ |
802 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
803 | ||
804 | /* Is the target in asynchronous execution mode? */ | |
805 | #define target_is_async_p() (current_target.to_is_async_p()) | |
806 | ||
807 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
808 | #define target_async(CALLBACK,CONTEXT) \ |
809 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 810 | |
04714b91 AC |
811 | /* This is to be used ONLY within call_function_by_hand(). It provides |
812 | a workaround, to have inferior function calls done in sychronous | |
813 | mode, even though the target is asynchronous. After | |
ed9a39eb JM |
814 | target_async_mask(0) is called, calls to target_can_async_p() will |
815 | return FALSE , so that target_resume() will not try to start the | |
816 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
817 | restore the previous nature of the target, by calling | |
818 | target_async_mask(1). After that, target_can_async_p() will return | |
04714b91 | 819 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. |
ed9a39eb JM |
820 | |
821 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
822 | the turning async on and off to the single execution commands, | |
0d06e24b | 823 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
824 | |
825 | #define target_async_mask_value \ | |
0d06e24b | 826 | (current_target.to_async_mask_value) |
ed9a39eb JM |
827 | |
828 | extern int target_async_mask (int mask); | |
829 | ||
a14ed312 | 830 | extern void target_link (char *, CORE_ADDR *); |
c906108c SS |
831 | |
832 | /* Converts a process id to a string. Usually, the string just contains | |
833 | `process xyz', but on some systems it may contain | |
834 | `process xyz thread abc'. */ | |
835 | ||
ed9a39eb JM |
836 | #undef target_pid_to_str |
837 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
838 | |
839 | #ifndef target_tid_to_str | |
840 | #define target_tid_to_str(PID) \ | |
0d06e24b | 841 | target_pid_to_str (PID) |
39f77062 | 842 | extern char *normal_pid_to_str (ptid_t ptid); |
c906108c | 843 | #endif |
c5aa993b | 844 | |
0d06e24b JM |
845 | /* Return a short string describing extra information about PID, |
846 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
847 | is okay. */ | |
848 | ||
849 | #define target_extra_thread_info(TP) \ | |
850 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 851 | |
11cf8741 JM |
852 | /* |
853 | * New Objfile Event Hook: | |
854 | * | |
855 | * Sometimes a GDB component wants to get notified whenever a new | |
856 | * objfile is loaded. Mainly this is used by thread-debugging | |
857 | * implementations that need to know when symbols for the target | |
858 | * thread implemenation are available. | |
859 | * | |
860 | * The old way of doing this is to define a macro 'target_new_objfile' | |
861 | * that points to the function that you want to be called on every | |
862 | * objfile/shlib load. | |
863 | * | |
864 | * The new way is to grab the function pointer, 'target_new_objfile_hook', | |
865 | * and point it to the function that you want to be called on every | |
866 | * objfile/shlib load. | |
867 | * | |
868 | * If multiple clients are willing to be cooperative, they can each | |
869 | * save a pointer to the previous value of target_new_objfile_hook | |
870 | * before modifying it, and arrange for their function to call the | |
871 | * previous function in the chain. In that way, multiple clients | |
872 | * can receive this notification (something like with signal handlers). | |
873 | */ | |
c906108c | 874 | |
507f3c78 | 875 | extern void (*target_new_objfile_hook) (struct objfile *); |
c906108c SS |
876 | |
877 | #ifndef target_pid_or_tid_to_str | |
878 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 879 | target_pid_to_str (ID) |
c906108c SS |
880 | #endif |
881 | ||
882 | /* Attempts to find the pathname of the executable file | |
883 | that was run to create a specified process. | |
884 | ||
885 | The process PID must be stopped when this operation is used. | |
c5aa993b | 886 | |
c906108c SS |
887 | If the executable file cannot be determined, NULL is returned. |
888 | ||
889 | Else, a pointer to a character string containing the pathname | |
890 | is returned. This string should be copied into a buffer by | |
891 | the client if the string will not be immediately used, or if | |
0d06e24b | 892 | it must persist. */ |
c906108c SS |
893 | |
894 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 895 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 896 | |
be4d1333 MS |
897 | /* |
898 | * Iterator function for target memory regions. | |
899 | * Calls a callback function once for each memory region 'mapped' | |
900 | * in the child process. Defined as a simple macro rather than | |
901 | * as a function macro so that it can be tested for nullity. | |
902 | */ | |
903 | ||
904 | #define target_find_memory_regions(FUNC, DATA) \ | |
905 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
906 | ||
907 | /* | |
908 | * Compose corefile .note section. | |
909 | */ | |
910 | ||
911 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
912 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
913 | ||
3f47be5c EZ |
914 | /* Thread-local values. */ |
915 | #define target_get_thread_local_address \ | |
916 | (current_target.to_get_thread_local_address) | |
917 | #define target_get_thread_local_address_p() \ | |
918 | (target_get_thread_local_address != NULL) | |
919 | ||
9d8a64cb | 920 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
921 | started. */ |
922 | ||
923 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
924 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
925 | #endif | |
926 | ||
927 | /* Hardware watchpoint interfaces. */ | |
928 | ||
929 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
930 | write). */ | |
931 | ||
932 | #ifndef STOPPED_BY_WATCHPOINT | |
ccaa32c7 GS |
933 | #define STOPPED_BY_WATCHPOINT(w) \ |
934 | (*current_target.to_stopped_by_watchpoint) () | |
c906108c | 935 | #endif |
7df1a324 KW |
936 | |
937 | /* Non-zero if we have continuable watchpoints */ | |
938 | ||
939 | #ifndef HAVE_CONTINUABLE_WATCHPOINT | |
940 | #define HAVE_CONTINUABLE_WATCHPOINT \ | |
941 | (current_target.to_have_continuable_watchpoint) | |
942 | #endif | |
c906108c SS |
943 | |
944 | /* HP-UX supplies these operations, which respectively disable and enable | |
945 | the memory page-protections that are used to implement hardware watchpoints | |
0d06e24b JM |
946 | on that platform. See wait_for_inferior's use of these. */ |
947 | ||
c906108c SS |
948 | #if !defined(TARGET_DISABLE_HW_WATCHPOINTS) |
949 | #define TARGET_DISABLE_HW_WATCHPOINTS(pid) | |
950 | #endif | |
951 | ||
952 | #if !defined(TARGET_ENABLE_HW_WATCHPOINTS) | |
953 | #define TARGET_ENABLE_HW_WATCHPOINTS(pid) | |
954 | #endif | |
955 | ||
ccaa32c7 | 956 | /* Provide defaults for hardware watchpoint functions. */ |
c906108c | 957 | |
ccaa32c7 GS |
958 | /* If the *_hw_beakpoint functions have not been defined |
959 | elsewhere use the definitions in the target vector. */ | |
c906108c SS |
960 | |
961 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
962 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
963 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
964 | (including this one?). OTHERTYPE is who knows what... */ | |
965 | ||
ccaa32c7 GS |
966 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
967 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ | |
968 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
969 | #endif | |
c906108c SS |
970 | |
971 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
972 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \ | |
ccaa32c7 | 973 | (*current_target.to_region_size_ok_for_hw_watchpoint) (byte_count) |
c906108c SS |
974 | #endif |
975 | ||
c906108c SS |
976 | |
977 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
978 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
979 | success, non-zero for failure. */ | |
980 | ||
ccaa32c7 GS |
981 | #ifndef target_insert_watchpoint |
982 | #define target_insert_watchpoint(addr, len, type) \ | |
983 | (*current_target.to_insert_watchpoint) (addr, len, type) | |
c906108c | 984 | |
ccaa32c7 GS |
985 | #define target_remove_watchpoint(addr, len, type) \ |
986 | (*current_target.to_remove_watchpoint) (addr, len, type) | |
987 | #endif | |
c906108c SS |
988 | |
989 | #ifndef target_insert_hw_breakpoint | |
ccaa32c7 GS |
990 | #define target_insert_hw_breakpoint(addr, save) \ |
991 | (*current_target.to_insert_hw_breakpoint) (addr, save) | |
992 | ||
993 | #define target_remove_hw_breakpoint(addr, save) \ | |
994 | (*current_target.to_remove_hw_breakpoint) (addr, save) | |
c906108c SS |
995 | #endif |
996 | ||
997 | #ifndef target_stopped_data_address | |
ccaa32c7 GS |
998 | #define target_stopped_data_address() \ |
999 | (*current_target.to_stopped_data_address) () | |
c906108c SS |
1000 | #endif |
1001 | ||
1002 | /* If defined, then we need to decr pc by this much after a hardware break- | |
1003 | point. Presumably this overrides DECR_PC_AFTER_BREAK... */ | |
1004 | ||
1005 | #ifndef DECR_PC_AFTER_HW_BREAK | |
1006 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1007 | #endif | |
1008 | ||
1009 | /* Sometimes gdb may pick up what appears to be a valid target address | |
1010 | from a minimal symbol, but the value really means, essentially, | |
1011 | "This is an index into a table which is populated when the inferior | |
0d06e24b JM |
1012 | is run. Therefore, do not attempt to use this as a PC." */ |
1013 | ||
c906108c SS |
1014 | #if !defined(PC_REQUIRES_RUN_BEFORE_USE) |
1015 | #define PC_REQUIRES_RUN_BEFORE_USE(pc) (0) | |
1016 | #endif | |
1017 | ||
1018 | /* This will only be defined by a target that supports catching vfork events, | |
1019 | such as HP-UX. | |
1020 | ||
1021 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1022 | child process after it has exec'd, causes the parent process to resume as | |
1023 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1024 | define this to a function that prevents that from happening. */ |
c906108c SS |
1025 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1026 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1027 | #endif | |
1028 | ||
1029 | /* This will only be defined by a target that supports catching vfork events, | |
1030 | such as HP-UX. | |
1031 | ||
1032 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1033 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1034 | vfork event will be delivered to us. */ |
1035 | ||
c906108c SS |
1036 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1037 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1038 | #endif | |
1039 | ||
1040 | /* Routines for maintenance of the target structures... | |
1041 | ||
1042 | add_target: Add a target to the list of all possible targets. | |
1043 | ||
1044 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1045 | targets, within its particular stratum of the stack. Result |
1046 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1047 | should warn user). | |
c906108c SS |
1048 | |
1049 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1050 | no matter where it is on the list. Returns 0 if no |
1051 | change, 1 if removed from stack. | |
c906108c | 1052 | |
c5aa993b | 1053 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1054 | |
a14ed312 | 1055 | extern void add_target (struct target_ops *); |
c906108c | 1056 | |
a14ed312 | 1057 | extern int push_target (struct target_ops *); |
c906108c | 1058 | |
a14ed312 | 1059 | extern int unpush_target (struct target_ops *); |
c906108c | 1060 | |
a14ed312 | 1061 | extern void target_preopen (int); |
c906108c | 1062 | |
a14ed312 | 1063 | extern void pop_target (void); |
c906108c SS |
1064 | |
1065 | /* Struct section_table maps address ranges to file sections. It is | |
1066 | mostly used with BFD files, but can be used without (e.g. for handling | |
1067 | raw disks, or files not in formats handled by BFD). */ | |
1068 | ||
c5aa993b JM |
1069 | struct section_table |
1070 | { | |
1071 | CORE_ADDR addr; /* Lowest address in section */ | |
1072 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1073 | |
c5aa993b | 1074 | sec_ptr the_bfd_section; |
c906108c | 1075 | |
c5aa993b JM |
1076 | bfd *bfd; /* BFD file pointer */ |
1077 | }; | |
c906108c SS |
1078 | |
1079 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
1080 | Returns 0 if OK, 1 on error. */ | |
1081 | ||
570b8f7c AC |
1082 | extern int build_section_table (bfd *, struct section_table **, |
1083 | struct section_table **); | |
c906108c SS |
1084 | |
1085 | /* From mem-break.c */ | |
1086 | ||
a14ed312 | 1087 | extern int memory_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 1088 | |
a14ed312 | 1089 | extern int memory_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 1090 | |
a14ed312 | 1091 | extern int default_memory_remove_breakpoint (CORE_ADDR, char *); |
917317f4 | 1092 | |
a14ed312 | 1093 | extern int default_memory_insert_breakpoint (CORE_ADDR, char *); |
917317f4 | 1094 | |
c906108c SS |
1095 | |
1096 | /* From target.c */ | |
1097 | ||
a14ed312 | 1098 | extern void initialize_targets (void); |
c906108c | 1099 | |
a14ed312 | 1100 | extern void noprocess (void); |
c906108c | 1101 | |
a14ed312 | 1102 | extern void find_default_attach (char *, int); |
c906108c | 1103 | |
a14ed312 | 1104 | extern void find_default_create_inferior (char *, char *, char **); |
c906108c | 1105 | |
a14ed312 | 1106 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1107 | |
a14ed312 | 1108 | extern struct target_ops *find_core_target (void); |
6426a772 | 1109 | |
a14ed312 | 1110 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb | 1111 | |
570b8f7c AC |
1112 | extern int target_resize_to_sections (struct target_ops *target, |
1113 | int num_added); | |
07cd4b97 JB |
1114 | |
1115 | extern void remove_target_sections (bfd *abfd); | |
1116 | ||
c906108c SS |
1117 | \f |
1118 | /* Stuff that should be shared among the various remote targets. */ | |
1119 | ||
1120 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1121 | information (higher values, more information). */ | |
1122 | extern int remote_debug; | |
1123 | ||
1124 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1125 | extern int baud_rate; | |
1126 | /* Timeout limit for response from target. */ | |
1127 | extern int remote_timeout; | |
1128 | ||
c906108c SS |
1129 | \f |
1130 | /* Functions for helping to write a native target. */ | |
1131 | ||
1132 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1133 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1134 | |
c2d11a7d | 1135 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1136 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1137 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1138 | to the shorter target_signal_p() because it is far less ambigious. | |
1139 | In this context ``target_signal'' refers to GDB's internal | |
1140 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1141 | refers to the target operating system's signal. Confused? */ |
1142 | ||
c2d11a7d JM |
1143 | extern int target_signal_to_host_p (enum target_signal signo); |
1144 | ||
1145 | /* Convert between host signal numbers and enum target_signal's. | |
1146 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1147 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1148 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1149 | refering to the target operating system's signal numbering. | |
1150 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1151 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1152 | internal representation of a target operating system's signal. */ |
1153 | ||
a14ed312 KB |
1154 | extern enum target_signal target_signal_from_host (int); |
1155 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1156 | |
1157 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1158 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1159 | |
1160 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1161 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1162 | \f |
1163 | /* Imported from machine dependent code */ | |
1164 | ||
c906108c | 1165 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1166 | void target_ignore (void); |
c906108c | 1167 | |
c5aa993b | 1168 | #endif /* !defined (TARGET_H) */ |