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c906108c | 1 | /* Interface between GDB and target environments, including files and processes |
d9fcf2fb | 2 | Copyright 1990-1994, 1999, 2000 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support. Written by John Gilmore. |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #if !defined (TARGET_H) | |
23 | #define TARGET_H | |
24 | ||
25 | /* This include file defines the interface between the main part | |
26 | of the debugger, and the part which is target-specific, or | |
27 | specific to the communications interface between us and the | |
28 | target. | |
29 | ||
30 | A TARGET is an interface between the debugger and a particular | |
31 | kind of file or process. Targets can be STACKED in STRATA, | |
32 | so that more than one target can potentially respond to a request. | |
33 | In particular, memory accesses will walk down the stack of targets | |
34 | until they find a target that is interested in handling that particular | |
35 | address. STRATA are artificial boundaries on the stack, within | |
36 | which particular kinds of targets live. Strata exist so that | |
37 | people don't get confused by pushing e.g. a process target and then | |
38 | a file target, and wondering why they can't see the current values | |
39 | of variables any more (the file target is handling them and they | |
40 | never get to the process target). So when you push a file target, | |
41 | it goes into the file stratum, which is always below the process | |
42 | stratum. */ | |
43 | ||
44 | #include "bfd.h" | |
45 | #include "symtab.h" | |
4930751a | 46 | #include "dcache.h" |
c906108c | 47 | |
c5aa993b JM |
48 | enum strata |
49 | { | |
50 | dummy_stratum, /* The lowest of the low */ | |
51 | file_stratum, /* Executable files, etc */ | |
52 | core_stratum, /* Core dump files */ | |
53 | download_stratum, /* Downloading of remote targets */ | |
d4f3574e SS |
54 | process_stratum, /* Executing processes */ |
55 | thread_stratum /* Executing threads */ | |
c5aa993b | 56 | }; |
c906108c | 57 | |
c5aa993b JM |
58 | enum thread_control_capabilities |
59 | { | |
0d06e24b JM |
60 | tc_none = 0, /* Default: can't control thread execution. */ |
61 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
62 | tc_switch = 2 /* Can switch the running thread on demand. */ | |
c5aa993b | 63 | }; |
c906108c SS |
64 | |
65 | /* Stuff for target_wait. */ | |
66 | ||
67 | /* Generally, what has the program done? */ | |
c5aa993b JM |
68 | enum target_waitkind |
69 | { | |
70 | /* The program has exited. The exit status is in value.integer. */ | |
71 | TARGET_WAITKIND_EXITED, | |
c906108c | 72 | |
0d06e24b JM |
73 | /* The program has stopped with a signal. Which signal is in |
74 | value.sig. */ | |
c5aa993b | 75 | TARGET_WAITKIND_STOPPED, |
c906108c | 76 | |
c5aa993b JM |
77 | /* The program has terminated with a signal. Which signal is in |
78 | value.sig. */ | |
79 | TARGET_WAITKIND_SIGNALLED, | |
c906108c | 80 | |
c5aa993b JM |
81 | /* The program is letting us know that it dynamically loaded something |
82 | (e.g. it called load(2) on AIX). */ | |
83 | TARGET_WAITKIND_LOADED, | |
c906108c | 84 | |
0d06e24b JM |
85 | /* The program has forked. A "related" process' ID is in |
86 | value.related_pid. I.e., if the child forks, value.related_pid | |
87 | is the parent's ID. */ | |
88 | ||
c5aa993b | 89 | TARGET_WAITKIND_FORKED, |
c906108c | 90 | |
0d06e24b JM |
91 | /* The program has vforked. A "related" process's ID is in |
92 | value.related_pid. */ | |
93 | ||
c5aa993b | 94 | TARGET_WAITKIND_VFORKED, |
c906108c | 95 | |
0d06e24b JM |
96 | /* The program has exec'ed a new executable file. The new file's |
97 | pathname is pointed to by value.execd_pathname. */ | |
98 | ||
c5aa993b | 99 | TARGET_WAITKIND_EXECD, |
c906108c | 100 | |
0d06e24b JM |
101 | /* The program has entered or returned from a system call. On |
102 | HP-UX, this is used in the hardware watchpoint implementation. | |
103 | The syscall's unique integer ID number is in value.syscall_id */ | |
104 | ||
c5aa993b JM |
105 | TARGET_WAITKIND_SYSCALL_ENTRY, |
106 | TARGET_WAITKIND_SYSCALL_RETURN, | |
c906108c | 107 | |
c5aa993b JM |
108 | /* Nothing happened, but we stopped anyway. This perhaps should be handled |
109 | within target_wait, but I'm not sure target_wait should be resuming the | |
110 | inferior. */ | |
c4093a6a JM |
111 | TARGET_WAITKIND_SPURIOUS, |
112 | ||
113 | /* This is used for target async and extended-async | |
114 | only. Remote_async_wait() returns this when there is an event | |
115 | on the inferior, but the rest of the world is not interested in | |
116 | it. The inferior has not stopped, but has just sent some output | |
117 | to the console, for instance. In this case, we want to go back | |
118 | to the event loop and wait there for another event from the | |
119 | inferior, rather than being stuck in the remote_async_wait() | |
120 | function. This way the event loop is responsive to other events, | |
0d06e24b | 121 | like for instance the user typing. */ |
c4093a6a | 122 | TARGET_WAITKIND_IGNORE |
c906108c SS |
123 | }; |
124 | ||
125 | /* The numbering of these signals is chosen to match traditional unix | |
126 | signals (insofar as various unices use the same numbers, anyway). | |
127 | It is also the numbering of the GDB remote protocol. Other remote | |
128 | protocols, if they use a different numbering, should make sure to | |
cd0fc7c3 | 129 | translate appropriately. |
c906108c | 130 | |
cd0fc7c3 SS |
131 | Since these numbers have actually made it out into other software |
132 | (stubs, etc.), you mustn't disturb the assigned numbering. If you | |
133 | need to add new signals here, add them to the end of the explicitly | |
134 | numbered signals. | |
135 | ||
136 | This is based strongly on Unix/POSIX signals for several reasons: | |
c906108c SS |
137 | (1) This set of signals represents a widely-accepted attempt to |
138 | represent events of this sort in a portable fashion, (2) we want a | |
139 | signal to make it from wait to child_wait to the user intact, (3) many | |
140 | remote protocols use a similar encoding. However, it is | |
141 | recognized that this set of signals has limitations (such as not | |
142 | distinguishing between various kinds of SIGSEGV, or not | |
143 | distinguishing hitting a breakpoint from finishing a single step). | |
144 | So in the future we may get around this either by adding additional | |
145 | signals for breakpoint, single-step, etc., or by adding signal | |
146 | codes; the latter seems more in the spirit of what BSD, System V, | |
147 | etc. are doing to address these issues. */ | |
148 | ||
149 | /* For an explanation of what each signal means, see | |
150 | target_signal_to_string. */ | |
151 | ||
c5aa993b JM |
152 | enum target_signal |
153 | { | |
154 | /* Used some places (e.g. stop_signal) to record the concept that | |
155 | there is no signal. */ | |
156 | TARGET_SIGNAL_0 = 0, | |
157 | TARGET_SIGNAL_FIRST = 0, | |
158 | TARGET_SIGNAL_HUP = 1, | |
159 | TARGET_SIGNAL_INT = 2, | |
160 | TARGET_SIGNAL_QUIT = 3, | |
161 | TARGET_SIGNAL_ILL = 4, | |
162 | TARGET_SIGNAL_TRAP = 5, | |
163 | TARGET_SIGNAL_ABRT = 6, | |
164 | TARGET_SIGNAL_EMT = 7, | |
165 | TARGET_SIGNAL_FPE = 8, | |
166 | TARGET_SIGNAL_KILL = 9, | |
167 | TARGET_SIGNAL_BUS = 10, | |
168 | TARGET_SIGNAL_SEGV = 11, | |
169 | TARGET_SIGNAL_SYS = 12, | |
170 | TARGET_SIGNAL_PIPE = 13, | |
171 | TARGET_SIGNAL_ALRM = 14, | |
172 | TARGET_SIGNAL_TERM = 15, | |
173 | TARGET_SIGNAL_URG = 16, | |
174 | TARGET_SIGNAL_STOP = 17, | |
175 | TARGET_SIGNAL_TSTP = 18, | |
176 | TARGET_SIGNAL_CONT = 19, | |
177 | TARGET_SIGNAL_CHLD = 20, | |
178 | TARGET_SIGNAL_TTIN = 21, | |
179 | TARGET_SIGNAL_TTOU = 22, | |
180 | TARGET_SIGNAL_IO = 23, | |
181 | TARGET_SIGNAL_XCPU = 24, | |
182 | TARGET_SIGNAL_XFSZ = 25, | |
183 | TARGET_SIGNAL_VTALRM = 26, | |
184 | TARGET_SIGNAL_PROF = 27, | |
185 | TARGET_SIGNAL_WINCH = 28, | |
186 | TARGET_SIGNAL_LOST = 29, | |
187 | TARGET_SIGNAL_USR1 = 30, | |
188 | TARGET_SIGNAL_USR2 = 31, | |
189 | TARGET_SIGNAL_PWR = 32, | |
190 | /* Similar to SIGIO. Perhaps they should have the same number. */ | |
191 | TARGET_SIGNAL_POLL = 33, | |
192 | TARGET_SIGNAL_WIND = 34, | |
193 | TARGET_SIGNAL_PHONE = 35, | |
194 | TARGET_SIGNAL_WAITING = 36, | |
195 | TARGET_SIGNAL_LWP = 37, | |
196 | TARGET_SIGNAL_DANGER = 38, | |
197 | TARGET_SIGNAL_GRANT = 39, | |
198 | TARGET_SIGNAL_RETRACT = 40, | |
199 | TARGET_SIGNAL_MSG = 41, | |
200 | TARGET_SIGNAL_SOUND = 42, | |
201 | TARGET_SIGNAL_SAK = 43, | |
202 | TARGET_SIGNAL_PRIO = 44, | |
203 | TARGET_SIGNAL_REALTIME_33 = 45, | |
204 | TARGET_SIGNAL_REALTIME_34 = 46, | |
205 | TARGET_SIGNAL_REALTIME_35 = 47, | |
206 | TARGET_SIGNAL_REALTIME_36 = 48, | |
207 | TARGET_SIGNAL_REALTIME_37 = 49, | |
208 | TARGET_SIGNAL_REALTIME_38 = 50, | |
209 | TARGET_SIGNAL_REALTIME_39 = 51, | |
210 | TARGET_SIGNAL_REALTIME_40 = 52, | |
211 | TARGET_SIGNAL_REALTIME_41 = 53, | |
212 | TARGET_SIGNAL_REALTIME_42 = 54, | |
213 | TARGET_SIGNAL_REALTIME_43 = 55, | |
214 | TARGET_SIGNAL_REALTIME_44 = 56, | |
215 | TARGET_SIGNAL_REALTIME_45 = 57, | |
216 | TARGET_SIGNAL_REALTIME_46 = 58, | |
217 | TARGET_SIGNAL_REALTIME_47 = 59, | |
218 | TARGET_SIGNAL_REALTIME_48 = 60, | |
219 | TARGET_SIGNAL_REALTIME_49 = 61, | |
220 | TARGET_SIGNAL_REALTIME_50 = 62, | |
221 | TARGET_SIGNAL_REALTIME_51 = 63, | |
222 | TARGET_SIGNAL_REALTIME_52 = 64, | |
223 | TARGET_SIGNAL_REALTIME_53 = 65, | |
224 | TARGET_SIGNAL_REALTIME_54 = 66, | |
225 | TARGET_SIGNAL_REALTIME_55 = 67, | |
226 | TARGET_SIGNAL_REALTIME_56 = 68, | |
227 | TARGET_SIGNAL_REALTIME_57 = 69, | |
228 | TARGET_SIGNAL_REALTIME_58 = 70, | |
229 | TARGET_SIGNAL_REALTIME_59 = 71, | |
230 | TARGET_SIGNAL_REALTIME_60 = 72, | |
231 | TARGET_SIGNAL_REALTIME_61 = 73, | |
232 | TARGET_SIGNAL_REALTIME_62 = 74, | |
233 | TARGET_SIGNAL_REALTIME_63 = 75, | |
234 | ||
235 | /* Used internally by Solaris threads. See signal(5) on Solaris. */ | |
236 | TARGET_SIGNAL_CANCEL = 76, | |
cd0fc7c3 | 237 | |
d4f3574e SS |
238 | /* Yes, this pains me, too. But LynxOS didn't have SIG32, and now |
239 | Linux does, and we can't disturb the numbering, since it's part | |
240 | of the protocol. Note that in some GDB's TARGET_SIGNAL_REALTIME_32 | |
241 | is number 76. */ | |
242 | TARGET_SIGNAL_REALTIME_32, | |
d57fc352 PS |
243 | /* Yet another pain, IRIX 6 has SIG64. */ |
244 | TARGET_SIGNAL_REALTIME_64, | |
d4f3574e | 245 | |
c906108c | 246 | #if defined(MACH) || defined(__MACH__) |
c5aa993b JM |
247 | /* Mach exceptions */ |
248 | TARGET_EXC_BAD_ACCESS, | |
249 | TARGET_EXC_BAD_INSTRUCTION, | |
250 | TARGET_EXC_ARITHMETIC, | |
251 | TARGET_EXC_EMULATION, | |
252 | TARGET_EXC_SOFTWARE, | |
253 | TARGET_EXC_BREAKPOINT, | |
c906108c | 254 | #endif |
c5aa993b | 255 | TARGET_SIGNAL_INFO, |
c906108c | 256 | |
c5aa993b JM |
257 | /* Some signal we don't know about. */ |
258 | TARGET_SIGNAL_UNKNOWN, | |
c906108c | 259 | |
c5aa993b JM |
260 | /* Use whatever signal we use when one is not specifically specified |
261 | (for passing to proceed and so on). */ | |
262 | TARGET_SIGNAL_DEFAULT, | |
c906108c | 263 | |
c5aa993b JM |
264 | /* Last and unused enum value, for sizing arrays, etc. */ |
265 | TARGET_SIGNAL_LAST | |
266 | }; | |
c906108c | 267 | |
c5aa993b JM |
268 | struct target_waitstatus |
269 | { | |
270 | enum target_waitkind kind; | |
271 | ||
272 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
273 | union | |
274 | { | |
275 | int integer; | |
276 | enum target_signal sig; | |
277 | int related_pid; | |
278 | char *execd_pathname; | |
279 | int syscall_id; | |
280 | } | |
281 | value; | |
282 | }; | |
c906108c | 283 | |
2acceee2 | 284 | /* Possible types of events that the inferior handler will have to |
0d06e24b | 285 | deal with. */ |
2acceee2 JM |
286 | enum inferior_event_type |
287 | { | |
0d06e24b | 288 | /* There is a request to quit the inferior, abandon it. */ |
2acceee2 JM |
289 | INF_QUIT_REQ, |
290 | /* Process a normal inferior event which will result in target_wait | |
0d06e24b | 291 | being called. */ |
2acceee2 | 292 | INF_REG_EVENT, |
0d06e24b | 293 | /* Deal with an error on the inferior. */ |
2acceee2 | 294 | INF_ERROR, |
0d06e24b | 295 | /* We are called because a timer went off. */ |
2acceee2 | 296 | INF_TIMER, |
0d06e24b | 297 | /* We are called to do stuff after the inferior stops. */ |
c2d11a7d JM |
298 | INF_EXEC_COMPLETE, |
299 | /* We are called to do some stuff after the inferior stops, but we | |
300 | are expected to reenter the proceed() and | |
301 | handle_inferior_event() functions. This is used only in case of | |
0d06e24b | 302 | 'step n' like commands. */ |
c2d11a7d | 303 | INF_EXEC_CONTINUE |
2acceee2 JM |
304 | }; |
305 | ||
c906108c | 306 | /* Return the string for a signal. */ |
a14ed312 | 307 | extern char *target_signal_to_string (enum target_signal); |
c906108c SS |
308 | |
309 | /* Return the name (SIGHUP, etc.) for a signal. */ | |
a14ed312 | 310 | extern char *target_signal_to_name (enum target_signal); |
c906108c SS |
311 | |
312 | /* Given a name (SIGHUP, etc.), return its signal. */ | |
a14ed312 | 313 | enum target_signal target_signal_from_name (char *); |
c906108c | 314 | \f |
c5aa993b | 315 | |
c906108c SS |
316 | /* If certain kinds of activity happen, target_wait should perform |
317 | callbacks. */ | |
318 | /* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible | |
0d06e24b | 319 | on TARGET_ACTIVITY_FD. */ |
c906108c SS |
320 | extern int target_activity_fd; |
321 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
507f3c78 | 322 | extern int (*target_activity_function) (void); |
c906108c | 323 | \f |
0d06e24b JM |
324 | struct thread_info; /* fwd decl for parameter list below: */ |
325 | ||
c906108c | 326 | struct target_ops |
c5aa993b JM |
327 | { |
328 | char *to_shortname; /* Name this target type */ | |
329 | char *to_longname; /* Name for printing */ | |
330 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 331 | newline, and starts with a one-line descrip- |
0d06e24b | 332 | tion (probably similar to to_longname). */ |
507f3c78 KB |
333 | void (*to_open) (char *, int); |
334 | void (*to_close) (int); | |
335 | void (*to_attach) (char *, int); | |
336 | void (*to_post_attach) (int); | |
337 | void (*to_require_attach) (char *, int); | |
338 | void (*to_detach) (char *, int); | |
339 | void (*to_require_detach) (int, char *, int); | |
340 | void (*to_resume) (int, int, enum target_signal); | |
341 | int (*to_wait) (int, struct target_waitstatus *); | |
342 | void (*to_post_wait) (int, int); | |
343 | void (*to_fetch_registers) (int); | |
344 | void (*to_store_registers) (int); | |
345 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
346 | |
347 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
348 | target address MEMADDR. If WRITE, transfer them to the target, else | |
349 | transfer them from the target. TARGET is the target from which we | |
350 | get this function. | |
351 | ||
352 | Return value, N, is one of the following: | |
353 | ||
354 | 0 means that we can't handle this. If errno has been set, it is the | |
355 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
356 | ||
357 | positive (call it N) means that we have transferred N bytes | |
358 | starting at MEMADDR. We might be able to handle more bytes | |
359 | beyond this length, but no promises. | |
360 | ||
361 | negative (call its absolute value N) means that we cannot | |
362 | transfer right at MEMADDR, but we could transfer at least | |
363 | something at MEMADDR + N. */ | |
364 | ||
507f3c78 KB |
365 | int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, |
366 | int len, int write, struct target_ops * target); | |
c906108c SS |
367 | |
368 | #if 0 | |
c5aa993b | 369 | /* Enable this after 4.12. */ |
c906108c | 370 | |
c5aa993b JM |
371 | /* Search target memory. Start at STARTADDR and take LEN bytes of |
372 | target memory, and them with MASK, and compare to DATA. If they | |
373 | match, set *ADDR_FOUND to the address we found it at, store the data | |
374 | we found at LEN bytes starting at DATA_FOUND, and return. If | |
375 | not, add INCREMENT to the search address and keep trying until | |
376 | the search address is outside of the range [LORANGE,HIRANGE). | |
c906108c | 377 | |
0d06e24b JM |
378 | If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and |
379 | return. */ | |
380 | ||
507f3c78 KB |
381 | void (*to_search) (int len, char *data, char *mask, |
382 | CORE_ADDR startaddr, int increment, | |
383 | CORE_ADDR lorange, CORE_ADDR hirange, | |
384 | CORE_ADDR * addr_found, char *data_found); | |
c906108c SS |
385 | |
386 | #define target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found) \ | |
0d06e24b JM |
387 | (*current_target.to_search) (len, data, mask, startaddr, increment, \ |
388 | lorange, hirange, addr_found, data_found) | |
c5aa993b JM |
389 | #endif /* 0 */ |
390 | ||
507f3c78 KB |
391 | void (*to_files_info) (struct target_ops *); |
392 | int (*to_insert_breakpoint) (CORE_ADDR, char *); | |
393 | int (*to_remove_breakpoint) (CORE_ADDR, char *); | |
394 | void (*to_terminal_init) (void); | |
395 | void (*to_terminal_inferior) (void); | |
396 | void (*to_terminal_ours_for_output) (void); | |
397 | void (*to_terminal_ours) (void); | |
398 | void (*to_terminal_info) (char *, int); | |
399 | void (*to_kill) (void); | |
400 | void (*to_load) (char *, int); | |
401 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
402 | void (*to_create_inferior) (char *, char *, char **); | |
403 | void (*to_post_startup_inferior) (int); | |
404 | void (*to_acknowledge_created_inferior) (int); | |
405 | void (*to_clone_and_follow_inferior) (int, int *); | |
406 | void (*to_post_follow_inferior_by_clone) (void); | |
407 | int (*to_insert_fork_catchpoint) (int); | |
408 | int (*to_remove_fork_catchpoint) (int); | |
409 | int (*to_insert_vfork_catchpoint) (int); | |
410 | int (*to_remove_vfork_catchpoint) (int); | |
411 | int (*to_has_forked) (int, int *); | |
412 | int (*to_has_vforked) (int, int *); | |
413 | int (*to_can_follow_vfork_prior_to_exec) (void); | |
414 | void (*to_post_follow_vfork) (int, int, int, int); | |
415 | int (*to_insert_exec_catchpoint) (int); | |
416 | int (*to_remove_exec_catchpoint) (int); | |
417 | int (*to_has_execd) (int, char **); | |
418 | int (*to_reported_exec_events_per_exec_call) (void); | |
419 | int (*to_has_syscall_event) (int, enum target_waitkind *, int *); | |
420 | int (*to_has_exited) (int, int, int *); | |
421 | void (*to_mourn_inferior) (void); | |
422 | int (*to_can_run) (void); | |
423 | void (*to_notice_signals) (int pid); | |
424 | int (*to_thread_alive) (int pid); | |
425 | void (*to_find_new_threads) (void); | |
426 | char *(*to_pid_to_str) (int); | |
427 | char *(*to_extra_thread_info) (struct thread_info *); | |
428 | void (*to_stop) (void); | |
429 | int (*to_query) (int /*char */ , char *, char *, int *); | |
d9fcf2fb | 430 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
431 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
432 | exception_event_kind, | |
433 | int); | |
434 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
435 | char *(*to_pid_to_exec_file) (int pid); | |
436 | char *(*to_core_file_to_sym_file) (char *); | |
c5aa993b JM |
437 | enum strata to_stratum; |
438 | struct target_ops | |
439 | *DONT_USE; /* formerly to_next */ | |
440 | int to_has_all_memory; | |
441 | int to_has_memory; | |
442 | int to_has_stack; | |
443 | int to_has_registers; | |
444 | int to_has_execution; | |
445 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
446 | struct section_table |
447 | *to_sections; | |
448 | struct section_table | |
449 | *to_sections_end; | |
6426a772 JM |
450 | /* ASYNC target controls */ |
451 | int (*to_can_async_p) (void); | |
452 | int (*to_is_async_p) (void); | |
0d06e24b JM |
453 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
454 | void *context); | |
ed9a39eb | 455 | int to_async_mask_value; |
c5aa993b | 456 | int to_magic; |
0d06e24b JM |
457 | /* Need sub-structure for target machine related rather than comm related? |
458 | */ | |
c5aa993b | 459 | }; |
c906108c SS |
460 | |
461 | /* Magic number for checking ops size. If a struct doesn't end with this | |
462 | number, somebody changed the declaration but didn't change all the | |
463 | places that initialize one. */ | |
464 | ||
465 | #define OPS_MAGIC 3840 | |
466 | ||
467 | /* The ops structure for our "current" target process. This should | |
468 | never be NULL. If there is no target, it points to the dummy_target. */ | |
469 | ||
c5aa993b | 470 | extern struct target_ops current_target; |
c906108c SS |
471 | |
472 | /* An item on the target stack. */ | |
473 | ||
474 | struct target_stack_item | |
c5aa993b JM |
475 | { |
476 | struct target_stack_item *next; | |
477 | struct target_ops *target_ops; | |
478 | }; | |
c906108c SS |
479 | |
480 | /* The target stack. */ | |
481 | ||
482 | extern struct target_stack_item *target_stack; | |
483 | ||
484 | /* Define easy words for doing these operations on our current target. */ | |
485 | ||
486 | #define target_shortname (current_target.to_shortname) | |
487 | #define target_longname (current_target.to_longname) | |
488 | ||
489 | /* The open routine takes the rest of the parameters from the command, | |
490 | and (if successful) pushes a new target onto the stack. | |
491 | Targets should supply this routine, if only to provide an error message. */ | |
0d06e24b | 492 | |
4930751a C |
493 | #define target_open(name, from_tty) \ |
494 | do { \ | |
495 | dcache_invalidate (target_dcache); \ | |
496 | (*current_target.to_open) (name, from_tty); \ | |
497 | } while (0) | |
c906108c SS |
498 | |
499 | /* Does whatever cleanup is required for a target that we are no longer | |
500 | going to be calling. Argument says whether we are quitting gdb and | |
501 | should not get hung in case of errors, or whether we want a clean | |
502 | termination even if it takes a while. This routine is automatically | |
503 | always called just before a routine is popped off the target stack. | |
504 | Closing file descriptors and freeing memory are typical things it should | |
505 | do. */ | |
506 | ||
507 | #define target_close(quitting) \ | |
0d06e24b | 508 | (*current_target.to_close) (quitting) |
c906108c SS |
509 | |
510 | /* Attaches to a process on the target side. Arguments are as passed | |
511 | to the `attach' command by the user. This routine can be called | |
512 | when the target is not on the target-stack, if the target_can_run | |
513 | routine returns 1; in that case, it must push itself onto the stack. | |
514 | Upon exit, the target should be ready for normal operations, and | |
515 | should be ready to deliver the status of the process immediately | |
516 | (without waiting) to an upcoming target_wait call. */ | |
517 | ||
518 | #define target_attach(args, from_tty) \ | |
0d06e24b | 519 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
520 | |
521 | /* The target_attach operation places a process under debugger control, | |
522 | and stops the process. | |
523 | ||
524 | This operation provides a target-specific hook that allows the | |
0d06e24b | 525 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 526 | #define target_post_attach(pid) \ |
0d06e24b | 527 | (*current_target.to_post_attach) (pid) |
c906108c SS |
528 | |
529 | /* Attaches to a process on the target side, if not already attached. | |
530 | (If already attached, takes no action.) | |
531 | ||
532 | This operation can be used to follow the child process of a fork. | |
533 | On some targets, such child processes of an original inferior process | |
534 | are automatically under debugger control, and thus do not require an | |
535 | actual attach operation. */ | |
536 | ||
537 | #define target_require_attach(args, from_tty) \ | |
0d06e24b | 538 | (*current_target.to_require_attach) (args, from_tty) |
c906108c SS |
539 | |
540 | /* Takes a program previously attached to and detaches it. | |
541 | The program may resume execution (some targets do, some don't) and will | |
542 | no longer stop on signals, etc. We better not have left any breakpoints | |
543 | in the program or it'll die when it hits one. ARGS is arguments | |
544 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
545 | says whether to be verbose or not. */ | |
546 | ||
a14ed312 | 547 | extern void target_detach (char *, int); |
c906108c SS |
548 | |
549 | /* Detaches from a process on the target side, if not already dettached. | |
550 | (If already detached, takes no action.) | |
551 | ||
552 | This operation can be used to follow the parent process of a fork. | |
553 | On some targets, such child processes of an original inferior process | |
554 | are automatically under debugger control, and thus do require an actual | |
555 | detach operation. | |
556 | ||
557 | PID is the process id of the child to detach from. | |
558 | ARGS is arguments typed by the user (e.g. a signal to send the process). | |
559 | FROM_TTY says whether to be verbose or not. */ | |
560 | ||
0d06e24b JM |
561 | #define target_require_detach(pid, args, from_tty) \ |
562 | (*current_target.to_require_detach) (pid, args, from_tty) | |
c906108c SS |
563 | |
564 | /* Resume execution of the target process PID. STEP says whether to | |
565 | single-step or to run free; SIGGNAL is the signal to be given to | |
566 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
567 | pass TARGET_SIGNAL_DEFAULT. */ | |
568 | ||
4930751a C |
569 | #define target_resume(pid, step, siggnal) \ |
570 | do { \ | |
571 | dcache_invalidate(target_dcache); \ | |
572 | (*current_target.to_resume) (pid, step, siggnal); \ | |
573 | } while (0) | |
c906108c SS |
574 | |
575 | /* Wait for process pid to do something. Pid = -1 to wait for any pid | |
576 | to do something. Return pid of child, or -1 in case of error; | |
577 | store status through argument pointer STATUS. Note that it is | |
578 | *not* OK to return_to_top_level out of target_wait without popping | |
579 | the debugging target from the stack; GDB isn't prepared to get back | |
580 | to the prompt with a debugging target but without the frame cache, | |
581 | stop_pc, etc., set up. */ | |
582 | ||
583 | #define target_wait(pid, status) \ | |
0d06e24b | 584 | (*current_target.to_wait) (pid, status) |
c906108c SS |
585 | |
586 | /* The target_wait operation waits for a process event to occur, and | |
587 | thereby stop the process. | |
588 | ||
589 | On some targets, certain events may happen in sequences. gdb's | |
590 | correct response to any single event of such a sequence may require | |
591 | knowledge of what earlier events in the sequence have been seen. | |
592 | ||
593 | This operation provides a target-specific hook that allows the | |
0d06e24b | 594 | necessary bookkeeping to be performed to track such sequences. */ |
c906108c SS |
595 | |
596 | #define target_post_wait(pid, status) \ | |
0d06e24b | 597 | (*current_target.to_post_wait) (pid, status) |
c906108c SS |
598 | |
599 | /* Fetch register REGNO, or all regs if regno == -1. No result. */ | |
600 | ||
601 | #define target_fetch_registers(regno) \ | |
0d06e24b | 602 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
603 | |
604 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
605 | It can store as many registers as it wants to, so target_prepare_to_store | |
606 | must have been previously called. Calls error() if there are problems. */ | |
607 | ||
608 | #define target_store_registers(regs) \ | |
0d06e24b | 609 | (*current_target.to_store_registers) (regs) |
c906108c SS |
610 | |
611 | /* Get ready to modify the registers array. On machines which store | |
612 | individual registers, this doesn't need to do anything. On machines | |
613 | which store all the registers in one fell swoop, this makes sure | |
614 | that REGISTERS contains all the registers from the program being | |
615 | debugged. */ | |
616 | ||
617 | #define target_prepare_to_store() \ | |
0d06e24b | 618 | (*current_target.to_prepare_to_store) () |
c906108c | 619 | |
4930751a C |
620 | extern DCACHE *target_dcache; |
621 | ||
622 | extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write); | |
623 | ||
a14ed312 | 624 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 625 | |
a14ed312 | 626 | extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 627 | |
4930751a | 628 | extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 629 | |
a14ed312 | 630 | extern int xfer_memory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c SS |
631 | |
632 | extern int | |
a14ed312 | 633 | child_xfer_memory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 634 | |
917317f4 JM |
635 | /* Make a single attempt at transfering LEN bytes. On a successful |
636 | transfer, the number of bytes actually transfered is returned and | |
637 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
638 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 639 | non-zero error indication. */ |
917317f4 | 640 | |
ed9a39eb JM |
641 | extern int |
642 | target_read_memory_partial (CORE_ADDR addr, char *buf, int len, int *err); | |
917317f4 | 643 | |
ed9a39eb JM |
644 | extern int |
645 | target_write_memory_partial (CORE_ADDR addr, char *buf, int len, int *err); | |
917317f4 | 646 | |
a14ed312 | 647 | extern char *child_pid_to_exec_file (int); |
c906108c | 648 | |
a14ed312 | 649 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
650 | |
651 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 652 | extern void child_post_attach (int); |
c906108c SS |
653 | #endif |
654 | ||
a14ed312 | 655 | extern void child_post_wait (int, int); |
c906108c | 656 | |
a14ed312 | 657 | extern void child_post_startup_inferior (int); |
c906108c | 658 | |
a14ed312 | 659 | extern void child_acknowledge_created_inferior (int); |
c906108c | 660 | |
a14ed312 | 661 | extern void child_clone_and_follow_inferior (int, int *); |
c906108c | 662 | |
a14ed312 | 663 | extern void child_post_follow_inferior_by_clone (void); |
c906108c | 664 | |
a14ed312 | 665 | extern int child_insert_fork_catchpoint (int); |
c906108c | 666 | |
a14ed312 | 667 | extern int child_remove_fork_catchpoint (int); |
c906108c | 668 | |
a14ed312 | 669 | extern int child_insert_vfork_catchpoint (int); |
c906108c | 670 | |
a14ed312 | 671 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 672 | |
a14ed312 | 673 | extern int child_has_forked (int, int *); |
c906108c | 674 | |
a14ed312 | 675 | extern int child_has_vforked (int, int *); |
c906108c | 676 | |
a14ed312 | 677 | extern void child_acknowledge_created_inferior (int); |
c906108c | 678 | |
a14ed312 | 679 | extern int child_can_follow_vfork_prior_to_exec (void); |
c906108c | 680 | |
a14ed312 | 681 | extern void child_post_follow_vfork (int, int, int, int); |
c906108c | 682 | |
a14ed312 | 683 | extern int child_insert_exec_catchpoint (int); |
c906108c | 684 | |
a14ed312 | 685 | extern int child_remove_exec_catchpoint (int); |
c906108c | 686 | |
a14ed312 | 687 | extern int child_has_execd (int, char **); |
c906108c | 688 | |
a14ed312 | 689 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 690 | |
a14ed312 | 691 | extern int child_has_syscall_event (int, enum target_waitkind *, int *); |
c906108c | 692 | |
a14ed312 | 693 | extern int child_has_exited (int, int, int *); |
c906108c | 694 | |
a14ed312 | 695 | extern int child_thread_alive (int); |
c906108c SS |
696 | |
697 | /* From exec.c */ | |
698 | ||
a14ed312 | 699 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
700 | |
701 | /* Print a line about the current target. */ | |
702 | ||
703 | #define target_files_info() \ | |
0d06e24b | 704 | (*current_target.to_files_info) (¤t_target) |
c906108c SS |
705 | |
706 | /* Insert a breakpoint at address ADDR in the target machine. | |
707 | SAVE is a pointer to memory allocated for saving the | |
708 | target contents. It is guaranteed by the caller to be long enough | |
709 | to save "sizeof BREAKPOINT" bytes. Result is 0 for success, or | |
710 | an errno value. */ | |
711 | ||
712 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 713 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
714 | |
715 | /* Remove a breakpoint at address ADDR in the target machine. | |
716 | SAVE is a pointer to the same save area | |
717 | that was previously passed to target_insert_breakpoint. | |
718 | Result is 0 for success, or an errno value. */ | |
719 | ||
720 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 721 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
722 | |
723 | /* Initialize the terminal settings we record for the inferior, | |
724 | before we actually run the inferior. */ | |
725 | ||
726 | #define target_terminal_init() \ | |
0d06e24b | 727 | (*current_target.to_terminal_init) () |
c906108c SS |
728 | |
729 | /* Put the inferior's terminal settings into effect. | |
730 | This is preparation for starting or resuming the inferior. */ | |
731 | ||
732 | #define target_terminal_inferior() \ | |
0d06e24b | 733 | (*current_target.to_terminal_inferior) () |
c906108c SS |
734 | |
735 | /* Put some of our terminal settings into effect, | |
736 | enough to get proper results from our output, | |
737 | but do not change into or out of RAW mode | |
738 | so that no input is discarded. | |
739 | ||
740 | After doing this, either terminal_ours or terminal_inferior | |
741 | should be called to get back to a normal state of affairs. */ | |
742 | ||
743 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 744 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
745 | |
746 | /* Put our terminal settings into effect. | |
747 | First record the inferior's terminal settings | |
748 | so they can be restored properly later. */ | |
749 | ||
750 | #define target_terminal_ours() \ | |
0d06e24b | 751 | (*current_target.to_terminal_ours) () |
c906108c SS |
752 | |
753 | /* Print useful information about our terminal status, if such a thing | |
754 | exists. */ | |
755 | ||
756 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 757 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
758 | |
759 | /* Kill the inferior process. Make it go away. */ | |
760 | ||
761 | #define target_kill() \ | |
0d06e24b | 762 | (*current_target.to_kill) () |
c906108c | 763 | |
0d06e24b JM |
764 | /* Load an executable file into the target process. This is expected |
765 | to not only bring new code into the target process, but also to | |
766 | update GDB's symbol tables to match. */ | |
c906108c | 767 | |
11cf8741 | 768 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
769 | |
770 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
771 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
772 | symbol should be returned. The result is 0 if successful, nonzero | |
773 | if the symbol does not exist in the target environment. This | |
774 | function should not call error() if communication with the target | |
775 | is interrupted, since it is called from symbol reading, but should | |
776 | return nonzero, possibly doing a complain(). */ | |
c906108c | 777 | |
0d06e24b JM |
778 | #define target_lookup_symbol(name, addrp) \ |
779 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c SS |
780 | |
781 | /* Start an inferior process and set inferior_pid to its pid. | |
782 | EXEC_FILE is the file to run. | |
783 | ALLARGS is a string containing the arguments to the program. | |
784 | ENV is the environment vector to pass. Errors reported with error(). | |
785 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 786 | |
c906108c | 787 | #define target_create_inferior(exec_file, args, env) \ |
0d06e24b | 788 | (*current_target.to_create_inferior) (exec_file, args, env) |
c906108c SS |
789 | |
790 | ||
791 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
792 | notification of inferior events such as fork and vork immediately | |
793 | after the inferior is created. (This because of how gdb gets an | |
794 | inferior created via invoking a shell to do it. In such a scenario, | |
795 | if the shell init file has commands in it, the shell will fork and | |
796 | exec for each of those commands, and we will see each such fork | |
797 | event. Very bad.) | |
c5aa993b | 798 | |
0d06e24b JM |
799 | Such targets will supply an appropriate definition for this function. */ |
800 | ||
c906108c | 801 | #define target_post_startup_inferior(pid) \ |
0d06e24b | 802 | (*current_target.to_post_startup_inferior) (pid) |
c906108c SS |
803 | |
804 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
805 | some synchronization between gdb and the new inferior process, PID. */ |
806 | ||
c906108c | 807 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 808 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c SS |
809 | |
810 | /* An inferior process has been created via a fork() or similar | |
811 | system call. This function will clone the debugger, then ensure | |
812 | that CHILD_PID is attached to by that debugger. | |
813 | ||
814 | FOLLOWED_CHILD is set TRUE on return *for the clone debugger only*, | |
815 | and FALSE otherwise. (The original and clone debuggers can use this | |
816 | to determine which they are, if need be.) | |
817 | ||
818 | (This is not a terribly useful feature without a GUI to prevent | |
0d06e24b JM |
819 | the two debuggers from competing for shell input.) */ |
820 | ||
c906108c | 821 | #define target_clone_and_follow_inferior(child_pid,followed_child) \ |
0d06e24b | 822 | (*current_target.to_clone_and_follow_inferior) (child_pid, followed_child) |
c906108c SS |
823 | |
824 | /* This operation is intended to be used as the last in a sequence of | |
825 | steps taken when following both parent and child of a fork. This | |
826 | is used by a clone of the debugger, which will follow the child. | |
827 | ||
828 | The original debugger has detached from this process, and the | |
829 | clone has attached to it. | |
830 | ||
831 | On some targets, this requires a bit of cleanup to make it work | |
0d06e24b JM |
832 | correctly. */ |
833 | ||
c906108c | 834 | #define target_post_follow_inferior_by_clone() \ |
0d06e24b JM |
835 | (*current_target.to_post_follow_inferior_by_clone) () |
836 | ||
837 | /* On some targets, we can catch an inferior fork or vfork event when | |
838 | it occurs. These functions insert/remove an already-created | |
839 | catchpoint for such events. */ | |
c906108c | 840 | |
c906108c | 841 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 842 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
843 | |
844 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 845 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
846 | |
847 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 848 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
849 | |
850 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 851 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c SS |
852 | |
853 | /* Returns TRUE if PID has invoked the fork() system call. And, | |
854 | also sets CHILD_PID to the process id of the other ("child") | |
0d06e24b JM |
855 | inferior process that was created by that call. */ |
856 | ||
c906108c | 857 | #define target_has_forked(pid,child_pid) \ |
0d06e24b JM |
858 | (*current_target.to_has_forked) (pid,child_pid) |
859 | ||
860 | /* Returns TRUE if PID has invoked the vfork() system call. And, | |
861 | also sets CHILD_PID to the process id of the other ("child") | |
862 | inferior process that was created by that call. */ | |
c906108c | 863 | |
c906108c | 864 | #define target_has_vforked(pid,child_pid) \ |
0d06e24b | 865 | (*current_target.to_has_vforked) (pid,child_pid) |
c906108c SS |
866 | |
867 | /* Some platforms (such as pre-10.20 HP-UX) don't allow us to do | |
868 | anything to a vforked child before it subsequently calls exec(). | |
869 | On such platforms, we say that the debugger cannot "follow" the | |
870 | child until it has vforked. | |
871 | ||
872 | This function should be defined to return 1 by those targets | |
873 | which can allow the debugger to immediately follow a vforked | |
0d06e24b JM |
874 | child, and 0 if they cannot. */ |
875 | ||
c906108c | 876 | #define target_can_follow_vfork_prior_to_exec() \ |
0d06e24b | 877 | (*current_target.to_can_follow_vfork_prior_to_exec) () |
c906108c SS |
878 | |
879 | /* An inferior process has been created via a vfork() system call. | |
880 | The debugger has followed the parent, the child, or both. The | |
881 | process of setting up for that follow may have required some | |
882 | target-specific trickery to track the sequence of reported events. | |
883 | If so, this function should be defined by those targets that | |
884 | require the debugger to perform cleanup or initialization after | |
0d06e24b JM |
885 | the vfork follow. */ |
886 | ||
c906108c | 887 | #define target_post_follow_vfork(parent_pid,followed_parent,child_pid,followed_child) \ |
0d06e24b | 888 | (*current_target.to_post_follow_vfork) (parent_pid,followed_parent,child_pid,followed_child) |
c906108c SS |
889 | |
890 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
891 | occurs. These functions insert/remove an already-created |
892 | catchpoint for such events. */ | |
893 | ||
c906108c | 894 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 895 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 896 | |
c906108c | 897 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 898 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c SS |
899 | |
900 | /* Returns TRUE if PID has invoked a flavor of the exec() system call. | |
0d06e24b JM |
901 | And, also sets EXECD_PATHNAME to the pathname of the executable |
902 | file that was passed to exec(), and is now being executed. */ | |
903 | ||
c906108c | 904 | #define target_has_execd(pid,execd_pathname) \ |
0d06e24b | 905 | (*current_target.to_has_execd) (pid,execd_pathname) |
c906108c SS |
906 | |
907 | /* Returns the number of exec events that are reported when a process | |
908 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
909 | events are being reported. */ |
910 | ||
c906108c | 911 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 912 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c SS |
913 | |
914 | /* Returns TRUE if PID has reported a syscall event. And, also sets | |
915 | KIND to the appropriate TARGET_WAITKIND_, and sets SYSCALL_ID to | |
0d06e24b JM |
916 | the unique integer ID of the syscall. */ |
917 | ||
c906108c | 918 | #define target_has_syscall_event(pid,kind,syscall_id) \ |
0d06e24b | 919 | (*current_target.to_has_syscall_event) (pid,kind,syscall_id) |
c906108c SS |
920 | |
921 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the | |
0d06e24b JM |
922 | exit code of PID, if any. */ |
923 | ||
c906108c | 924 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 925 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
926 | |
927 | /* The debugger has completed a blocking wait() call. There is now | |
0d06e24b | 928 | some process event that must be processed. This function should |
c906108c | 929 | be defined by those targets that require the debugger to perform |
0d06e24b | 930 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
931 | |
932 | /* The inferior process has died. Do what is right. */ | |
933 | ||
934 | #define target_mourn_inferior() \ | |
0d06e24b | 935 | (*current_target.to_mourn_inferior) () |
c906108c SS |
936 | |
937 | /* Does target have enough data to do a run or attach command? */ | |
938 | ||
939 | #define target_can_run(t) \ | |
0d06e24b | 940 | ((t)->to_can_run) () |
c906108c SS |
941 | |
942 | /* post process changes to signal handling in the inferior. */ | |
943 | ||
944 | #define target_notice_signals(pid) \ | |
0d06e24b | 945 | (*current_target.to_notice_signals) (pid) |
c906108c SS |
946 | |
947 | /* Check to see if a thread is still alive. */ | |
948 | ||
949 | #define target_thread_alive(pid) \ | |
0d06e24b | 950 | (*current_target.to_thread_alive) (pid) |
c906108c | 951 | |
b83266a0 SS |
952 | /* Query for new threads and add them to the thread list. */ |
953 | ||
954 | #define target_find_new_threads() \ | |
0d06e24b | 955 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 956 | |
0d06e24b JM |
957 | /* Make target stop in a continuable fashion. (For instance, under |
958 | Unix, this should act like SIGSTOP). This function is normally | |
959 | used by GUIs to implement a stop button. */ | |
c906108c SS |
960 | |
961 | #define target_stop current_target.to_stop | |
962 | ||
963 | /* Queries the target side for some information. The first argument is a | |
964 | letter specifying the type of the query, which is used to determine who | |
965 | should process it. The second argument is a string that specifies which | |
966 | information is desired and the third is a buffer that carries back the | |
967 | response from the target side. The fourth parameter is the size of the | |
0d06e24b | 968 | output buffer supplied. */ |
c5aa993b | 969 | |
c906108c | 970 | #define target_query(query_type, query, resp_buffer, bufffer_size) \ |
0d06e24b | 971 | (*current_target.to_query) (query_type, query, resp_buffer, bufffer_size) |
c906108c | 972 | |
96baa820 JM |
973 | /* Send the specified COMMAND to the target's monitor |
974 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 975 | placed in OUTBUF. */ |
96baa820 JM |
976 | |
977 | #define target_rcmd(command, outbuf) \ | |
978 | (*current_target.to_rcmd) (command, outbuf) | |
979 | ||
980 | ||
c906108c SS |
981 | /* Get the symbol information for a breakpointable routine called when |
982 | an exception event occurs. | |
983 | Intended mainly for C++, and for those | |
984 | platforms/implementations where such a callback mechanism is available, | |
985 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 986 | different mechanisms for debugging exceptions. */ |
c906108c SS |
987 | |
988 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 989 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 990 | |
0d06e24b | 991 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 992 | |
c906108c | 993 | #define target_get_current_exception_event() \ |
0d06e24b | 994 | (*current_target.to_get_current_exception_event) () |
c906108c SS |
995 | |
996 | /* Pointer to next target in the chain, e.g. a core file and an exec file. */ | |
997 | ||
998 | #define target_next \ | |
0d06e24b | 999 | (current_target.to_next) |
c906108c SS |
1000 | |
1001 | /* Does the target include all of memory, or only part of it? This | |
1002 | determines whether we look up the target chain for other parts of | |
1003 | memory if this target can't satisfy a request. */ | |
1004 | ||
1005 | #define target_has_all_memory \ | |
0d06e24b | 1006 | (current_target.to_has_all_memory) |
c906108c SS |
1007 | |
1008 | /* Does the target include memory? (Dummy targets don't.) */ | |
1009 | ||
1010 | #define target_has_memory \ | |
0d06e24b | 1011 | (current_target.to_has_memory) |
c906108c SS |
1012 | |
1013 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
1014 | we start a process.) */ | |
c5aa993b | 1015 | |
c906108c | 1016 | #define target_has_stack \ |
0d06e24b | 1017 | (current_target.to_has_stack) |
c906108c SS |
1018 | |
1019 | /* Does the target have registers? (Exec files don't.) */ | |
1020 | ||
1021 | #define target_has_registers \ | |
0d06e24b | 1022 | (current_target.to_has_registers) |
c906108c SS |
1023 | |
1024 | /* Does the target have execution? Can we make it jump (through | |
1025 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
1026 | way, it needs to check whether an inferior actually exists. | |
1027 | remote-udi.c and probably other targets can be the current target | |
1028 | when the inferior doesn't actually exist at the moment. Right now | |
1029 | this just tells us whether this target is *capable* of execution. */ | |
1030 | ||
1031 | #define target_has_execution \ | |
0d06e24b | 1032 | (current_target.to_has_execution) |
c906108c SS |
1033 | |
1034 | /* Can the target support the debugger control of thread execution? | |
1035 | a) Can it lock the thread scheduler? | |
1036 | b) Can it switch the currently running thread? */ | |
1037 | ||
1038 | #define target_can_lock_scheduler \ | |
0d06e24b | 1039 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
1040 | |
1041 | #define target_can_switch_threads \ | |
0d06e24b | 1042 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 1043 | |
6426a772 JM |
1044 | /* Can the target support asynchronous execution? */ |
1045 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
1046 | ||
1047 | /* Is the target in asynchronous execution mode? */ | |
1048 | #define target_is_async_p() (current_target.to_is_async_p()) | |
1049 | ||
1050 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
1051 | #define target_async(CALLBACK,CONTEXT) \ |
1052 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 1053 | |
ed9a39eb JM |
1054 | /* This is to be used ONLY within run_stack_dummy(). It |
1055 | provides a workaround, to have inferior function calls done in | |
1056 | sychronous mode, even though the target is asynchronous. After | |
1057 | target_async_mask(0) is called, calls to target_can_async_p() will | |
1058 | return FALSE , so that target_resume() will not try to start the | |
1059 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
1060 | restore the previous nature of the target, by calling | |
1061 | target_async_mask(1). After that, target_can_async_p() will return | |
1062 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. | |
1063 | ||
1064 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
1065 | the turning async on and off to the single execution commands, | |
0d06e24b | 1066 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
1067 | |
1068 | #define target_async_mask_value \ | |
0d06e24b | 1069 | (current_target.to_async_mask_value) |
ed9a39eb JM |
1070 | |
1071 | extern int target_async_mask (int mask); | |
1072 | ||
a14ed312 | 1073 | extern void target_link (char *, CORE_ADDR *); |
c906108c SS |
1074 | |
1075 | /* Converts a process id to a string. Usually, the string just contains | |
1076 | `process xyz', but on some systems it may contain | |
1077 | `process xyz thread abc'. */ | |
1078 | ||
ed9a39eb JM |
1079 | #undef target_pid_to_str |
1080 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
1081 | |
1082 | #ifndef target_tid_to_str | |
1083 | #define target_tid_to_str(PID) \ | |
0d06e24b | 1084 | target_pid_to_str (PID) |
a14ed312 | 1085 | extern char *normal_pid_to_str (int pid); |
c906108c | 1086 | #endif |
c5aa993b | 1087 | |
0d06e24b JM |
1088 | /* Return a short string describing extra information about PID, |
1089 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
1090 | is okay. */ | |
1091 | ||
1092 | #define target_extra_thread_info(TP) \ | |
1093 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 1094 | |
11cf8741 JM |
1095 | /* |
1096 | * New Objfile Event Hook: | |
1097 | * | |
1098 | * Sometimes a GDB component wants to get notified whenever a new | |
1099 | * objfile is loaded. Mainly this is used by thread-debugging | |
1100 | * implementations that need to know when symbols for the target | |
1101 | * thread implemenation are available. | |
1102 | * | |
1103 | * The old way of doing this is to define a macro 'target_new_objfile' | |
1104 | * that points to the function that you want to be called on every | |
1105 | * objfile/shlib load. | |
1106 | * | |
1107 | * The new way is to grab the function pointer, 'target_new_objfile_hook', | |
1108 | * and point it to the function that you want to be called on every | |
1109 | * objfile/shlib load. | |
1110 | * | |
1111 | * If multiple clients are willing to be cooperative, they can each | |
1112 | * save a pointer to the previous value of target_new_objfile_hook | |
1113 | * before modifying it, and arrange for their function to call the | |
1114 | * previous function in the chain. In that way, multiple clients | |
1115 | * can receive this notification (something like with signal handlers). | |
1116 | */ | |
c906108c | 1117 | |
507f3c78 | 1118 | extern void (*target_new_objfile_hook) (struct objfile *); |
c906108c SS |
1119 | |
1120 | #ifndef target_pid_or_tid_to_str | |
1121 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 1122 | target_pid_to_str (ID) |
c906108c SS |
1123 | #endif |
1124 | ||
1125 | /* Attempts to find the pathname of the executable file | |
1126 | that was run to create a specified process. | |
1127 | ||
1128 | The process PID must be stopped when this operation is used. | |
c5aa993b | 1129 | |
c906108c SS |
1130 | If the executable file cannot be determined, NULL is returned. |
1131 | ||
1132 | Else, a pointer to a character string containing the pathname | |
1133 | is returned. This string should be copied into a buffer by | |
1134 | the client if the string will not be immediately used, or if | |
0d06e24b | 1135 | it must persist. */ |
c906108c SS |
1136 | |
1137 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 1138 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 1139 | |
9d8a64cb | 1140 | /* Hook to call target-dependent code after reading in a new symbol table. */ |
c906108c SS |
1141 | |
1142 | #ifndef TARGET_SYMFILE_POSTREAD | |
1143 | #define TARGET_SYMFILE_POSTREAD(OBJFILE) | |
1144 | #endif | |
1145 | ||
9d8a64cb | 1146 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
1147 | started. */ |
1148 | ||
1149 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
1150 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
1151 | #endif | |
1152 | ||
1153 | /* Hardware watchpoint interfaces. */ | |
1154 | ||
1155 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
1156 | write). */ | |
1157 | ||
1158 | #ifndef STOPPED_BY_WATCHPOINT | |
1159 | #define STOPPED_BY_WATCHPOINT(w) 0 | |
1160 | #endif | |
1161 | ||
1162 | /* HP-UX supplies these operations, which respectively disable and enable | |
1163 | the memory page-protections that are used to implement hardware watchpoints | |
0d06e24b JM |
1164 | on that platform. See wait_for_inferior's use of these. */ |
1165 | ||
c906108c SS |
1166 | #if !defined(TARGET_DISABLE_HW_WATCHPOINTS) |
1167 | #define TARGET_DISABLE_HW_WATCHPOINTS(pid) | |
1168 | #endif | |
1169 | ||
1170 | #if !defined(TARGET_ENABLE_HW_WATCHPOINTS) | |
1171 | #define TARGET_ENABLE_HW_WATCHPOINTS(pid) | |
1172 | #endif | |
1173 | ||
0d06e24b | 1174 | /* Provide defaults for systems that don't support hardware watchpoints. */ |
c906108c SS |
1175 | |
1176 | #ifndef TARGET_HAS_HARDWARE_WATCHPOINTS | |
1177 | ||
1178 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
1179 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
1180 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
1181 | (including this one?). OTHERTYPE is who knows what... */ | |
1182 | ||
1183 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0 | |
1184 | ||
1185 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
1186 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \ | |
6ab3a9c9 | 1187 | ((LONGEST)(byte_count) <= REGISTER_SIZE) |
c906108c SS |
1188 | #endif |
1189 | ||
1190 | /* However, some addresses may not be profitable to use hardware to watch, | |
1191 | or may be difficult to understand when the addressed object is out of | |
1192 | scope, and hence should be unwatched. On some targets, this may have | |
1193 | severe performance penalties, such that we might as well use regular | |
1194 | watchpoints, and save (possibly precious) hardware watchpoints for other | |
0d06e24b JM |
1195 | locations. */ |
1196 | ||
c906108c SS |
1197 | #if !defined(TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT) |
1198 | #define TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT(pid,start,len) 0 | |
1199 | #endif | |
1200 | ||
1201 | ||
1202 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1203 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1204 | success, non-zero for failure. */ | |
1205 | ||
1206 | #define target_remove_watchpoint(ADDR,LEN,TYPE) -1 | |
1207 | #define target_insert_watchpoint(ADDR,LEN,TYPE) -1 | |
1208 | ||
1209 | #endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */ | |
1210 | ||
1211 | #ifndef target_insert_hw_breakpoint | |
1212 | #define target_remove_hw_breakpoint(ADDR,SHADOW) -1 | |
1213 | #define target_insert_hw_breakpoint(ADDR,SHADOW) -1 | |
1214 | #endif | |
1215 | ||
1216 | #ifndef target_stopped_data_address | |
1217 | #define target_stopped_data_address() 0 | |
1218 | #endif | |
1219 | ||
1220 | /* If defined, then we need to decr pc by this much after a hardware break- | |
1221 | point. Presumably this overrides DECR_PC_AFTER_BREAK... */ | |
1222 | ||
1223 | #ifndef DECR_PC_AFTER_HW_BREAK | |
1224 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1225 | #endif | |
1226 | ||
1227 | /* Sometimes gdb may pick up what appears to be a valid target address | |
1228 | from a minimal symbol, but the value really means, essentially, | |
1229 | "This is an index into a table which is populated when the inferior | |
0d06e24b JM |
1230 | is run. Therefore, do not attempt to use this as a PC." */ |
1231 | ||
c906108c SS |
1232 | #if !defined(PC_REQUIRES_RUN_BEFORE_USE) |
1233 | #define PC_REQUIRES_RUN_BEFORE_USE(pc) (0) | |
1234 | #endif | |
1235 | ||
1236 | /* This will only be defined by a target that supports catching vfork events, | |
1237 | such as HP-UX. | |
1238 | ||
1239 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1240 | child process after it has exec'd, causes the parent process to resume as | |
1241 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1242 | define this to a function that prevents that from happening. */ |
c906108c SS |
1243 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1244 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1245 | #endif | |
1246 | ||
1247 | /* This will only be defined by a target that supports catching vfork events, | |
1248 | such as HP-UX. | |
1249 | ||
1250 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1251 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1252 | vfork event will be delivered to us. */ |
1253 | ||
c906108c SS |
1254 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1255 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1256 | #endif | |
1257 | ||
1258 | /* Routines for maintenance of the target structures... | |
1259 | ||
1260 | add_target: Add a target to the list of all possible targets. | |
1261 | ||
1262 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1263 | targets, within its particular stratum of the stack. Result |
1264 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1265 | should warn user). | |
c906108c SS |
1266 | |
1267 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1268 | no matter where it is on the list. Returns 0 if no |
1269 | change, 1 if removed from stack. | |
c906108c | 1270 | |
c5aa993b | 1271 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1272 | |
a14ed312 | 1273 | extern void add_target (struct target_ops *); |
c906108c | 1274 | |
a14ed312 | 1275 | extern int push_target (struct target_ops *); |
c906108c | 1276 | |
a14ed312 | 1277 | extern int unpush_target (struct target_ops *); |
c906108c | 1278 | |
a14ed312 | 1279 | extern void target_preopen (int); |
c906108c | 1280 | |
a14ed312 | 1281 | extern void pop_target (void); |
c906108c SS |
1282 | |
1283 | /* Struct section_table maps address ranges to file sections. It is | |
1284 | mostly used with BFD files, but can be used without (e.g. for handling | |
1285 | raw disks, or files not in formats handled by BFD). */ | |
1286 | ||
c5aa993b JM |
1287 | struct section_table |
1288 | { | |
1289 | CORE_ADDR addr; /* Lowest address in section */ | |
1290 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1291 | |
c5aa993b | 1292 | sec_ptr the_bfd_section; |
c906108c | 1293 | |
c5aa993b JM |
1294 | bfd *bfd; /* BFD file pointer */ |
1295 | }; | |
c906108c SS |
1296 | |
1297 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
1298 | Returns 0 if OK, 1 on error. */ | |
1299 | ||
1300 | extern int | |
a14ed312 | 1301 | build_section_table (bfd *, struct section_table **, struct section_table **); |
c906108c SS |
1302 | |
1303 | /* From mem-break.c */ | |
1304 | ||
a14ed312 | 1305 | extern int memory_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 1306 | |
a14ed312 | 1307 | extern int memory_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 1308 | |
a14ed312 | 1309 | extern int default_memory_remove_breakpoint (CORE_ADDR, char *); |
917317f4 | 1310 | |
a14ed312 | 1311 | extern int default_memory_insert_breakpoint (CORE_ADDR, char *); |
917317f4 | 1312 | |
c906108c | 1313 | extern breakpoint_from_pc_fn memory_breakpoint_from_pc; |
c906108c SS |
1314 | |
1315 | ||
1316 | /* From target.c */ | |
1317 | ||
a14ed312 | 1318 | extern void initialize_targets (void); |
c906108c | 1319 | |
a14ed312 | 1320 | extern void noprocess (void); |
c906108c | 1321 | |
a14ed312 | 1322 | extern void find_default_attach (char *, int); |
c906108c | 1323 | |
a14ed312 | 1324 | extern void find_default_require_attach (char *, int); |
c906108c | 1325 | |
a14ed312 | 1326 | extern void find_default_require_detach (int, char *, int); |
c906108c | 1327 | |
a14ed312 | 1328 | extern void find_default_create_inferior (char *, char *, char **); |
c906108c | 1329 | |
a14ed312 | 1330 | extern void find_default_clone_and_follow_inferior (int, int *); |
c906108c | 1331 | |
a14ed312 | 1332 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1333 | |
a14ed312 | 1334 | extern struct target_ops *find_core_target (void); |
6426a772 | 1335 | |
a14ed312 | 1336 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb JM |
1337 | |
1338 | extern int | |
a14ed312 | 1339 | target_resize_to_sections (struct target_ops *target, int num_added); |
07cd4b97 JB |
1340 | |
1341 | extern void remove_target_sections (bfd *abfd); | |
1342 | ||
c906108c SS |
1343 | \f |
1344 | /* Stuff that should be shared among the various remote targets. */ | |
1345 | ||
1346 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1347 | information (higher values, more information). */ | |
1348 | extern int remote_debug; | |
1349 | ||
1350 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1351 | extern int baud_rate; | |
1352 | /* Timeout limit for response from target. */ | |
1353 | extern int remote_timeout; | |
1354 | ||
c906108c SS |
1355 | \f |
1356 | /* Functions for helping to write a native target. */ | |
1357 | ||
1358 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1359 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1360 | |
c2d11a7d | 1361 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1362 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1363 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1364 | to the shorter target_signal_p() because it is far less ambigious. | |
1365 | In this context ``target_signal'' refers to GDB's internal | |
1366 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1367 | refers to the target operating system's signal. Confused? */ |
1368 | ||
c2d11a7d JM |
1369 | extern int target_signal_to_host_p (enum target_signal signo); |
1370 | ||
1371 | /* Convert between host signal numbers and enum target_signal's. | |
1372 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1373 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1374 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1375 | refering to the target operating system's signal numbering. | |
1376 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1377 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1378 | internal representation of a target operating system's signal. */ |
1379 | ||
a14ed312 KB |
1380 | extern enum target_signal target_signal_from_host (int); |
1381 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1382 | |
1383 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1384 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1385 | |
1386 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1387 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1388 | \f |
1389 | /* Imported from machine dependent code */ | |
1390 | ||
1391 | #ifndef SOFTWARE_SINGLE_STEP_P | |
1392 | #define SOFTWARE_SINGLE_STEP_P 0 | |
0d06e24b JM |
1393 | #define SOFTWARE_SINGLE_STEP(sig,bp_p) \ |
1394 | (internal_error ("SOFTWARE_SINGLE_STEP"), 0) | |
c906108c SS |
1395 | #endif /* SOFTWARE_SINGLE_STEP_P */ |
1396 | ||
1397 | /* Blank target vector entries are initialized to target_ignore. */ | |
a14ed312 | 1398 | void target_ignore (void); |
c906108c SS |
1399 | |
1400 | /* Macro for getting target's idea of a frame pointer. | |
1401 | FIXME: GDB's whole scheme for dealing with "frames" and | |
1402 | "frame pointers" needs a serious shakedown. */ | |
1403 | #ifndef TARGET_VIRTUAL_FRAME_POINTER | |
1404 | #define TARGET_VIRTUAL_FRAME_POINTER(ADDR, REGP, OFFP) \ | |
1405 | do { *(REGP) = FP_REGNUM; *(OFFP) = 0; } while (0) | |
1406 | #endif /* TARGET_VIRTUAL_FRAME_POINTER */ | |
1407 | ||
c5aa993b | 1408 | #endif /* !defined (TARGET_H) */ |