Commit | Line | Data |
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c906108c | 1 | /* Interface between GDB and target environments, including files and processes |
0088c768 AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
e74f0f02 | 4 | 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
0088c768 | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support. Written by John Gilmore. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #if !defined (TARGET_H) | |
26 | #define TARGET_H | |
27 | ||
da3331ec AC |
28 | struct objfile; |
29 | struct ui_file; | |
30 | struct mem_attrib; | |
1e3ff5ad | 31 | struct target_ops; |
da3331ec | 32 | |
c906108c SS |
33 | /* This include file defines the interface between the main part |
34 | of the debugger, and the part which is target-specific, or | |
35 | specific to the communications interface between us and the | |
36 | target. | |
37 | ||
2146d243 RM |
38 | A TARGET is an interface between the debugger and a particular |
39 | kind of file or process. Targets can be STACKED in STRATA, | |
c906108c SS |
40 | so that more than one target can potentially respond to a request. |
41 | In particular, memory accesses will walk down the stack of targets | |
42 | until they find a target that is interested in handling that particular | |
43 | address. STRATA are artificial boundaries on the stack, within | |
44 | which particular kinds of targets live. Strata exist so that | |
45 | people don't get confused by pushing e.g. a process target and then | |
46 | a file target, and wondering why they can't see the current values | |
47 | of variables any more (the file target is handling them and they | |
48 | never get to the process target). So when you push a file target, | |
49 | it goes into the file stratum, which is always below the process | |
50 | stratum. */ | |
51 | ||
52 | #include "bfd.h" | |
53 | #include "symtab.h" | |
4930751a | 54 | #include "dcache.h" |
29e57380 | 55 | #include "memattr.h" |
c906108c | 56 | |
c5aa993b JM |
57 | enum strata |
58 | { | |
59 | dummy_stratum, /* The lowest of the low */ | |
60 | file_stratum, /* Executable files, etc */ | |
61 | core_stratum, /* Core dump files */ | |
62 | download_stratum, /* Downloading of remote targets */ | |
d4f3574e SS |
63 | process_stratum, /* Executing processes */ |
64 | thread_stratum /* Executing threads */ | |
c5aa993b | 65 | }; |
c906108c | 66 | |
c5aa993b JM |
67 | enum thread_control_capabilities |
68 | { | |
0d06e24b JM |
69 | tc_none = 0, /* Default: can't control thread execution. */ |
70 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
71 | tc_switch = 2 /* Can switch the running thread on demand. */ | |
c5aa993b | 72 | }; |
c906108c SS |
73 | |
74 | /* Stuff for target_wait. */ | |
75 | ||
76 | /* Generally, what has the program done? */ | |
c5aa993b JM |
77 | enum target_waitkind |
78 | { | |
79 | /* The program has exited. The exit status is in value.integer. */ | |
80 | TARGET_WAITKIND_EXITED, | |
c906108c | 81 | |
0d06e24b JM |
82 | /* The program has stopped with a signal. Which signal is in |
83 | value.sig. */ | |
c5aa993b | 84 | TARGET_WAITKIND_STOPPED, |
c906108c | 85 | |
c5aa993b JM |
86 | /* The program has terminated with a signal. Which signal is in |
87 | value.sig. */ | |
88 | TARGET_WAITKIND_SIGNALLED, | |
c906108c | 89 | |
c5aa993b JM |
90 | /* The program is letting us know that it dynamically loaded something |
91 | (e.g. it called load(2) on AIX). */ | |
92 | TARGET_WAITKIND_LOADED, | |
c906108c | 93 | |
0d06e24b JM |
94 | /* The program has forked. A "related" process' ID is in |
95 | value.related_pid. I.e., if the child forks, value.related_pid | |
96 | is the parent's ID. */ | |
97 | ||
c5aa993b | 98 | TARGET_WAITKIND_FORKED, |
c906108c | 99 | |
0d06e24b JM |
100 | /* The program has vforked. A "related" process's ID is in |
101 | value.related_pid. */ | |
102 | ||
c5aa993b | 103 | TARGET_WAITKIND_VFORKED, |
c906108c | 104 | |
0d06e24b JM |
105 | /* The program has exec'ed a new executable file. The new file's |
106 | pathname is pointed to by value.execd_pathname. */ | |
107 | ||
c5aa993b | 108 | TARGET_WAITKIND_EXECD, |
c906108c | 109 | |
0d06e24b JM |
110 | /* The program has entered or returned from a system call. On |
111 | HP-UX, this is used in the hardware watchpoint implementation. | |
112 | The syscall's unique integer ID number is in value.syscall_id */ | |
113 | ||
c5aa993b JM |
114 | TARGET_WAITKIND_SYSCALL_ENTRY, |
115 | TARGET_WAITKIND_SYSCALL_RETURN, | |
c906108c | 116 | |
c5aa993b JM |
117 | /* Nothing happened, but we stopped anyway. This perhaps should be handled |
118 | within target_wait, but I'm not sure target_wait should be resuming the | |
119 | inferior. */ | |
c4093a6a JM |
120 | TARGET_WAITKIND_SPURIOUS, |
121 | ||
8e7d2c16 DJ |
122 | /* An event has occured, but we should wait again. |
123 | Remote_async_wait() returns this when there is an event | |
c4093a6a JM |
124 | on the inferior, but the rest of the world is not interested in |
125 | it. The inferior has not stopped, but has just sent some output | |
126 | to the console, for instance. In this case, we want to go back | |
127 | to the event loop and wait there for another event from the | |
128 | inferior, rather than being stuck in the remote_async_wait() | |
129 | function. This way the event loop is responsive to other events, | |
0d06e24b | 130 | like for instance the user typing. */ |
c4093a6a | 131 | TARGET_WAITKIND_IGNORE |
c906108c SS |
132 | }; |
133 | ||
c5aa993b JM |
134 | struct target_waitstatus |
135 | { | |
136 | enum target_waitkind kind; | |
137 | ||
138 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
139 | union | |
140 | { | |
141 | int integer; | |
142 | enum target_signal sig; | |
143 | int related_pid; | |
144 | char *execd_pathname; | |
145 | int syscall_id; | |
146 | } | |
147 | value; | |
148 | }; | |
c906108c | 149 | |
2acceee2 | 150 | /* Possible types of events that the inferior handler will have to |
0d06e24b | 151 | deal with. */ |
2acceee2 JM |
152 | enum inferior_event_type |
153 | { | |
0d06e24b | 154 | /* There is a request to quit the inferior, abandon it. */ |
2acceee2 JM |
155 | INF_QUIT_REQ, |
156 | /* Process a normal inferior event which will result in target_wait | |
0d06e24b | 157 | being called. */ |
2146d243 | 158 | INF_REG_EVENT, |
0d06e24b | 159 | /* Deal with an error on the inferior. */ |
2acceee2 | 160 | INF_ERROR, |
0d06e24b | 161 | /* We are called because a timer went off. */ |
2acceee2 | 162 | INF_TIMER, |
0d06e24b | 163 | /* We are called to do stuff after the inferior stops. */ |
c2d11a7d JM |
164 | INF_EXEC_COMPLETE, |
165 | /* We are called to do some stuff after the inferior stops, but we | |
166 | are expected to reenter the proceed() and | |
167 | handle_inferior_event() functions. This is used only in case of | |
0d06e24b | 168 | 'step n' like commands. */ |
c2d11a7d | 169 | INF_EXEC_CONTINUE |
2acceee2 JM |
170 | }; |
171 | ||
c906108c | 172 | /* Return the string for a signal. */ |
a14ed312 | 173 | extern char *target_signal_to_string (enum target_signal); |
c906108c SS |
174 | |
175 | /* Return the name (SIGHUP, etc.) for a signal. */ | |
a14ed312 | 176 | extern char *target_signal_to_name (enum target_signal); |
c906108c SS |
177 | |
178 | /* Given a name (SIGHUP, etc.), return its signal. */ | |
a14ed312 | 179 | enum target_signal target_signal_from_name (char *); |
c906108c | 180 | \f |
1e3ff5ad AC |
181 | /* Request the transfer of up to LEN 8-bit bytes of the target's |
182 | OBJECT. The OFFSET, for a seekable object, specifies the starting | |
183 | point. The ANNEX can be used to provide additional data-specific | |
184 | information to the target. | |
185 | ||
186 | Return the number of bytes actually transfered, zero when no | |
187 | further transfer is possible, and -1 when the transfer is not | |
188 | supported. | |
2146d243 | 189 | |
1e3ff5ad AC |
190 | NOTE: cagney/2003-10-17: The current interface does not support a |
191 | "retry" mechanism. Instead it assumes that at least one byte will | |
192 | be transfered on each call. | |
193 | ||
194 | NOTE: cagney/2003-10-17: The current interface can lead to | |
195 | fragmented transfers. Lower target levels should not implement | |
196 | hacks, such as enlarging the transfer, in an attempt to compensate | |
197 | for this. Instead, the target stack should be extended so that it | |
198 | implements supply/collect methods and a look-aside object cache. | |
199 | With that available, the lowest target can safely and freely "push" | |
200 | data up the stack. | |
201 | ||
202 | NOTE: cagney/2003-10-17: Unlike the old query and the memory | |
203 | transfer mechanisms, these methods are explicitly parameterized by | |
204 | the target that it should be applied to. | |
205 | ||
206 | NOTE: cagney/2003-10-17: Just like the old query and memory xfer | |
207 | methods, these new methods perform partial transfers. The only | |
208 | difference is that these new methods thought to include "partial" | |
209 | in the name. The old code's failure to do this lead to much | |
210 | confusion and duplication of effort as each target object attempted | |
211 | to locally take responsibility for something it didn't have to | |
212 | worry about. | |
213 | ||
4b8a223f AC |
214 | NOTE: cagney/2003-10-17: With a TARGET_OBJECT_KOD object, for |
215 | backward compatibility with the "target_query" method that this | |
216 | replaced, when OFFSET and LEN are both zero, return the "minimum" | |
217 | buffer size. See "remote.c" for further information. */ | |
1e3ff5ad AC |
218 | |
219 | enum target_object | |
220 | { | |
221 | /* Kernel Object Display transfer. See "kod.c" and "remote.c". */ | |
222 | TARGET_OBJECT_KOD, | |
223 | /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */ | |
224 | TARGET_OBJECT_AVR, | |
225 | /* Transfer up-to LEN bytes of memory starting at OFFSET. */ | |
287a334e JJ |
226 | TARGET_OBJECT_MEMORY, |
227 | /* Kernel Unwind Table. See "ia64-tdep.c". */ | |
228 | TARGET_OBJECT_UNWIND_TABLE, | |
2146d243 RM |
229 | /* Transfer auxilliary vector. */ |
230 | TARGET_OBJECT_AUXV, | |
baf92889 MK |
231 | /* StackGhost cookie. See "sparc-tdep.c". */ |
232 | TARGET_OBJECT_WCOOKIE | |
2146d243 RM |
233 | |
234 | /* Possible future objects: TARGET_OBJECT_FILE, TARGET_OBJECT_PROC, ... */ | |
1e3ff5ad AC |
235 | }; |
236 | ||
237 | extern LONGEST target_read_partial (struct target_ops *ops, | |
238 | enum target_object object, | |
239 | const char *annex, void *buf, | |
240 | ULONGEST offset, LONGEST len); | |
241 | ||
242 | extern LONGEST target_write_partial (struct target_ops *ops, | |
243 | enum target_object object, | |
244 | const char *annex, const void *buf, | |
245 | ULONGEST offset, LONGEST len); | |
246 | ||
247 | /* Wrappers to perform the full transfer. */ | |
248 | extern LONGEST target_read (struct target_ops *ops, | |
249 | enum target_object object, | |
250 | const char *annex, void *buf, | |
251 | ULONGEST offset, LONGEST len); | |
252 | ||
253 | extern LONGEST target_write (struct target_ops *ops, | |
254 | enum target_object object, | |
255 | const char *annex, const void *buf, | |
256 | ULONGEST offset, LONGEST len); | |
b6591e8b AC |
257 | |
258 | /* Wrappers to target read/write that perform memory transfers. They | |
259 | throw an error if the memory transfer fails. | |
260 | ||
261 | NOTE: cagney/2003-10-23: The naming schema is lifted from | |
262 | "frame.h". The parameter order is lifted from get_frame_memory, | |
263 | which in turn lifted it from read_memory. */ | |
264 | ||
265 | extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr, | |
266 | void *buf, LONGEST len); | |
267 | extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, | |
268 | CORE_ADDR addr, int len); | |
1e3ff5ad | 269 | \f |
c5aa993b | 270 | |
c906108c SS |
271 | /* If certain kinds of activity happen, target_wait should perform |
272 | callbacks. */ | |
273 | /* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible | |
0d06e24b | 274 | on TARGET_ACTIVITY_FD. */ |
c906108c SS |
275 | extern int target_activity_fd; |
276 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
507f3c78 | 277 | extern int (*target_activity_function) (void); |
c906108c | 278 | \f |
0d06e24b JM |
279 | struct thread_info; /* fwd decl for parameter list below: */ |
280 | ||
c906108c | 281 | struct target_ops |
c5aa993b | 282 | { |
258b763a | 283 | struct target_ops *beneath; /* To the target under this one. */ |
c5aa993b JM |
284 | char *to_shortname; /* Name this target type */ |
285 | char *to_longname; /* Name for printing */ | |
286 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 287 | newline, and starts with a one-line descrip- |
0d06e24b | 288 | tion (probably similar to to_longname). */ |
bba2d28d AC |
289 | /* Per-target scratch pad. */ |
290 | void *to_data; | |
f1c07ab0 AC |
291 | /* The open routine takes the rest of the parameters from the |
292 | command, and (if successful) pushes a new target onto the | |
293 | stack. Targets should supply this routine, if only to provide | |
294 | an error message. */ | |
507f3c78 | 295 | void (*to_open) (char *, int); |
f1c07ab0 AC |
296 | /* Old targets with a static target vector provide "to_close". |
297 | New re-entrant targets provide "to_xclose" and that is expected | |
298 | to xfree everything (including the "struct target_ops"). */ | |
299 | void (*to_xclose) (struct target_ops *targ, int quitting); | |
507f3c78 KB |
300 | void (*to_close) (int); |
301 | void (*to_attach) (char *, int); | |
302 | void (*to_post_attach) (int); | |
507f3c78 | 303 | void (*to_detach) (char *, int); |
6ad8ae5c | 304 | void (*to_disconnect) (char *, int); |
39f77062 KB |
305 | void (*to_resume) (ptid_t, int, enum target_signal); |
306 | ptid_t (*to_wait) (ptid_t, struct target_waitstatus *); | |
507f3c78 KB |
307 | void (*to_fetch_registers) (int); |
308 | void (*to_store_registers) (int); | |
309 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
310 | |
311 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
312 | target address MEMADDR. If WRITE, transfer them to the target, else | |
313 | transfer them from the target. TARGET is the target from which we | |
314 | get this function. | |
315 | ||
316 | Return value, N, is one of the following: | |
317 | ||
318 | 0 means that we can't handle this. If errno has been set, it is the | |
319 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
320 | ||
321 | positive (call it N) means that we have transferred N bytes | |
322 | starting at MEMADDR. We might be able to handle more bytes | |
323 | beyond this length, but no promises. | |
324 | ||
325 | negative (call its absolute value N) means that we cannot | |
326 | transfer right at MEMADDR, but we could transfer at least | |
327 | something at MEMADDR + N. */ | |
328 | ||
507f3c78 | 329 | int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, |
2146d243 | 330 | int len, int write, |
29e57380 C |
331 | struct mem_attrib *attrib, |
332 | struct target_ops *target); | |
c906108c | 333 | |
507f3c78 KB |
334 | void (*to_files_info) (struct target_ops *); |
335 | int (*to_insert_breakpoint) (CORE_ADDR, char *); | |
336 | int (*to_remove_breakpoint) (CORE_ADDR, char *); | |
ccaa32c7 GS |
337 | int (*to_can_use_hw_breakpoint) (int, int, int); |
338 | int (*to_insert_hw_breakpoint) (CORE_ADDR, char *); | |
339 | int (*to_remove_hw_breakpoint) (CORE_ADDR, char *); | |
340 | int (*to_remove_watchpoint) (CORE_ADDR, int, int); | |
341 | int (*to_insert_watchpoint) (CORE_ADDR, int, int); | |
342 | int (*to_stopped_by_watchpoint) (void); | |
7df1a324 | 343 | int to_have_continuable_watchpoint; |
ccaa32c7 GS |
344 | CORE_ADDR (*to_stopped_data_address) (void); |
345 | int (*to_region_size_ok_for_hw_watchpoint) (int); | |
507f3c78 KB |
346 | void (*to_terminal_init) (void); |
347 | void (*to_terminal_inferior) (void); | |
348 | void (*to_terminal_ours_for_output) (void); | |
349 | void (*to_terminal_ours) (void); | |
a790ad35 | 350 | void (*to_terminal_save_ours) (void); |
507f3c78 KB |
351 | void (*to_terminal_info) (char *, int); |
352 | void (*to_kill) (void); | |
353 | void (*to_load) (char *, int); | |
354 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
c27cda74 | 355 | void (*to_create_inferior) (char *, char *, char **, int); |
39f77062 | 356 | void (*to_post_startup_inferior) (ptid_t); |
507f3c78 | 357 | void (*to_acknowledge_created_inferior) (int); |
507f3c78 KB |
358 | int (*to_insert_fork_catchpoint) (int); |
359 | int (*to_remove_fork_catchpoint) (int); | |
360 | int (*to_insert_vfork_catchpoint) (int); | |
361 | int (*to_remove_vfork_catchpoint) (int); | |
6604731b | 362 | int (*to_follow_fork) (int); |
507f3c78 KB |
363 | int (*to_insert_exec_catchpoint) (int); |
364 | int (*to_remove_exec_catchpoint) (int); | |
507f3c78 | 365 | int (*to_reported_exec_events_per_exec_call) (void); |
507f3c78 KB |
366 | int (*to_has_exited) (int, int, int *); |
367 | void (*to_mourn_inferior) (void); | |
368 | int (*to_can_run) (void); | |
39f77062 KB |
369 | void (*to_notice_signals) (ptid_t ptid); |
370 | int (*to_thread_alive) (ptid_t ptid); | |
507f3c78 | 371 | void (*to_find_new_threads) (void); |
39f77062 | 372 | char *(*to_pid_to_str) (ptid_t); |
507f3c78 KB |
373 | char *(*to_extra_thread_info) (struct thread_info *); |
374 | void (*to_stop) (void); | |
d9fcf2fb | 375 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
376 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
377 | exception_event_kind, | |
378 | int); | |
379 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
380 | char *(*to_pid_to_exec_file) (int pid); | |
c5aa993b | 381 | enum strata to_stratum; |
c5aa993b JM |
382 | int to_has_all_memory; |
383 | int to_has_memory; | |
384 | int to_has_stack; | |
385 | int to_has_registers; | |
386 | int to_has_execution; | |
387 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
388 | struct section_table |
389 | *to_sections; | |
390 | struct section_table | |
391 | *to_sections_end; | |
6426a772 JM |
392 | /* ASYNC target controls */ |
393 | int (*to_can_async_p) (void); | |
394 | int (*to_is_async_p) (void); | |
0d06e24b JM |
395 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
396 | void *context); | |
ed9a39eb | 397 | int to_async_mask_value; |
2146d243 RM |
398 | int (*to_find_memory_regions) (int (*) (CORE_ADDR, |
399 | unsigned long, | |
400 | int, int, int, | |
401 | void *), | |
be4d1333 MS |
402 | void *); |
403 | char * (*to_make_corefile_notes) (bfd *, int *); | |
3f47be5c EZ |
404 | |
405 | /* Return the thread-local address at OFFSET in the | |
406 | thread-local storage for the thread PTID and the shared library | |
407 | or executable file given by OBJFILE. If that block of | |
408 | thread-local storage hasn't been allocated yet, this function | |
409 | may return an error. */ | |
410 | CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid, | |
411 | struct objfile *objfile, | |
412 | CORE_ADDR offset); | |
413 | ||
4b8a223f AC |
414 | /* Perform partial transfers on OBJECT. See target_read_partial |
415 | and target_write_partial for details of each variant. One, and | |
416 | only one, of readbuf or writebuf must be non-NULL. */ | |
417 | LONGEST (*to_xfer_partial) (struct target_ops *ops, | |
8aa91c1e | 418 | enum target_object object, const char *annex, |
2146d243 | 419 | void *readbuf, const void *writebuf, |
8aa91c1e | 420 | ULONGEST offset, LONGEST len); |
1e3ff5ad | 421 | |
c5aa993b | 422 | int to_magic; |
0d06e24b JM |
423 | /* Need sub-structure for target machine related rather than comm related? |
424 | */ | |
c5aa993b | 425 | }; |
c906108c SS |
426 | |
427 | /* Magic number for checking ops size. If a struct doesn't end with this | |
428 | number, somebody changed the declaration but didn't change all the | |
429 | places that initialize one. */ | |
430 | ||
431 | #define OPS_MAGIC 3840 | |
432 | ||
433 | /* The ops structure for our "current" target process. This should | |
434 | never be NULL. If there is no target, it points to the dummy_target. */ | |
435 | ||
c5aa993b | 436 | extern struct target_ops current_target; |
c906108c | 437 | |
c906108c SS |
438 | /* Define easy words for doing these operations on our current target. */ |
439 | ||
440 | #define target_shortname (current_target.to_shortname) | |
441 | #define target_longname (current_target.to_longname) | |
442 | ||
f1c07ab0 AC |
443 | /* Does whatever cleanup is required for a target that we are no |
444 | longer going to be calling. QUITTING indicates that GDB is exiting | |
445 | and should not get hung on an error (otherwise it is important to | |
446 | perform clean termination, even if it takes a while). This routine | |
447 | is automatically always called when popping the target off the | |
448 | target stack (to_beneath is undefined). Closing file descriptors | |
449 | and freeing all memory allocated memory are typical things it | |
450 | should do. */ | |
451 | ||
452 | void target_close (struct target_ops *targ, int quitting); | |
c906108c SS |
453 | |
454 | /* Attaches to a process on the target side. Arguments are as passed | |
455 | to the `attach' command by the user. This routine can be called | |
456 | when the target is not on the target-stack, if the target_can_run | |
2146d243 | 457 | routine returns 1; in that case, it must push itself onto the stack. |
c906108c | 458 | Upon exit, the target should be ready for normal operations, and |
2146d243 | 459 | should be ready to deliver the status of the process immediately |
c906108c SS |
460 | (without waiting) to an upcoming target_wait call. */ |
461 | ||
462 | #define target_attach(args, from_tty) \ | |
0d06e24b | 463 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
464 | |
465 | /* The target_attach operation places a process under debugger control, | |
466 | and stops the process. | |
467 | ||
468 | This operation provides a target-specific hook that allows the | |
0d06e24b | 469 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 470 | #define target_post_attach(pid) \ |
0d06e24b | 471 | (*current_target.to_post_attach) (pid) |
c906108c | 472 | |
c906108c SS |
473 | /* Takes a program previously attached to and detaches it. |
474 | The program may resume execution (some targets do, some don't) and will | |
475 | no longer stop on signals, etc. We better not have left any breakpoints | |
476 | in the program or it'll die when it hits one. ARGS is arguments | |
477 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
478 | says whether to be verbose or not. */ | |
479 | ||
a14ed312 | 480 | extern void target_detach (char *, int); |
c906108c | 481 | |
6ad8ae5c DJ |
482 | /* Disconnect from the current target without resuming it (leaving it |
483 | waiting for a debugger). */ | |
484 | ||
485 | extern void target_disconnect (char *, int); | |
486 | ||
39f77062 | 487 | /* Resume execution of the target process PTID. STEP says whether to |
c906108c SS |
488 | single-step or to run free; SIGGNAL is the signal to be given to |
489 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
490 | pass TARGET_SIGNAL_DEFAULT. */ | |
491 | ||
39f77062 | 492 | #define target_resume(ptid, step, siggnal) \ |
4930751a C |
493 | do { \ |
494 | dcache_invalidate(target_dcache); \ | |
39f77062 | 495 | (*current_target.to_resume) (ptid, step, siggnal); \ |
4930751a | 496 | } while (0) |
c906108c | 497 | |
b5a2688f AC |
498 | /* Wait for process pid to do something. PTID = -1 to wait for any |
499 | pid to do something. Return pid of child, or -1 in case of error; | |
c906108c | 500 | store status through argument pointer STATUS. Note that it is |
b5a2688f | 501 | _NOT_ OK to throw_exception() out of target_wait() without popping |
c906108c SS |
502 | the debugging target from the stack; GDB isn't prepared to get back |
503 | to the prompt with a debugging target but without the frame cache, | |
504 | stop_pc, etc., set up. */ | |
505 | ||
39f77062 KB |
506 | #define target_wait(ptid, status) \ |
507 | (*current_target.to_wait) (ptid, status) | |
c906108c | 508 | |
17dee195 | 509 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
510 | |
511 | #define target_fetch_registers(regno) \ | |
0d06e24b | 512 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
513 | |
514 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
515 | It can store as many registers as it wants to, so target_prepare_to_store | |
516 | must have been previously called. Calls error() if there are problems. */ | |
517 | ||
518 | #define target_store_registers(regs) \ | |
0d06e24b | 519 | (*current_target.to_store_registers) (regs) |
c906108c SS |
520 | |
521 | /* Get ready to modify the registers array. On machines which store | |
522 | individual registers, this doesn't need to do anything. On machines | |
523 | which store all the registers in one fell swoop, this makes sure | |
524 | that REGISTERS contains all the registers from the program being | |
525 | debugged. */ | |
526 | ||
527 | #define target_prepare_to_store() \ | |
0d06e24b | 528 | (*current_target.to_prepare_to_store) () |
c906108c | 529 | |
4930751a C |
530 | extern DCACHE *target_dcache; |
531 | ||
29e57380 C |
532 | extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
533 | struct mem_attrib *attrib); | |
4930751a | 534 | |
a14ed312 | 535 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 536 | |
a14ed312 | 537 | extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 538 | |
4930751a | 539 | extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 540 | |
2146d243 | 541 | extern int xfer_memory (CORE_ADDR, char *, int, int, |
29e57380 | 542 | struct mem_attrib *, struct target_ops *); |
c906108c | 543 | |
2146d243 | 544 | extern int child_xfer_memory (CORE_ADDR, char *, int, int, |
29e57380 | 545 | struct mem_attrib *, struct target_ops *); |
c906108c | 546 | |
917317f4 JM |
547 | /* Make a single attempt at transfering LEN bytes. On a successful |
548 | transfer, the number of bytes actually transfered is returned and | |
549 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
550 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 551 | non-zero error indication. */ |
917317f4 | 552 | |
570b8f7c AC |
553 | extern int target_read_memory_partial (CORE_ADDR addr, char *buf, int len, |
554 | int *err); | |
917317f4 | 555 | |
570b8f7c AC |
556 | extern int target_write_memory_partial (CORE_ADDR addr, char *buf, int len, |
557 | int *err); | |
917317f4 | 558 | |
a14ed312 | 559 | extern char *child_pid_to_exec_file (int); |
c906108c | 560 | |
a14ed312 | 561 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
562 | |
563 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 564 | extern void child_post_attach (int); |
c906108c SS |
565 | #endif |
566 | ||
39f77062 | 567 | extern void child_post_startup_inferior (ptid_t); |
c906108c | 568 | |
a14ed312 | 569 | extern void child_acknowledge_created_inferior (int); |
c906108c | 570 | |
a14ed312 | 571 | extern int child_insert_fork_catchpoint (int); |
c906108c | 572 | |
a14ed312 | 573 | extern int child_remove_fork_catchpoint (int); |
c906108c | 574 | |
a14ed312 | 575 | extern int child_insert_vfork_catchpoint (int); |
c906108c | 576 | |
a14ed312 | 577 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 578 | |
a14ed312 | 579 | extern void child_acknowledge_created_inferior (int); |
c906108c | 580 | |
6604731b | 581 | extern int child_follow_fork (int); |
c906108c | 582 | |
a14ed312 | 583 | extern int child_insert_exec_catchpoint (int); |
c906108c | 584 | |
a14ed312 | 585 | extern int child_remove_exec_catchpoint (int); |
c906108c | 586 | |
a14ed312 | 587 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 588 | |
a14ed312 | 589 | extern int child_has_exited (int, int, int *); |
c906108c | 590 | |
39f77062 | 591 | extern int child_thread_alive (ptid_t); |
c906108c | 592 | |
47932f85 DJ |
593 | /* From infrun.c. */ |
594 | ||
595 | extern int inferior_has_forked (int pid, int *child_pid); | |
596 | ||
597 | extern int inferior_has_vforked (int pid, int *child_pid); | |
598 | ||
599 | extern int inferior_has_execd (int pid, char **execd_pathname); | |
600 | ||
c906108c SS |
601 | /* From exec.c */ |
602 | ||
a14ed312 | 603 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
604 | |
605 | /* Print a line about the current target. */ | |
606 | ||
607 | #define target_files_info() \ | |
0d06e24b | 608 | (*current_target.to_files_info) (¤t_target) |
c906108c | 609 | |
aaab4dba AC |
610 | /* Insert a breakpoint at address ADDR in the target machine. SAVE is |
611 | a pointer to memory allocated for saving the target contents. It | |
612 | is guaranteed by the caller to be long enough to save the number of | |
613 | breakpoint bytes indicated by BREAKPOINT_FROM_PC. Result is 0 for | |
614 | success, or an errno value. */ | |
c906108c SS |
615 | |
616 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 617 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
618 | |
619 | /* Remove a breakpoint at address ADDR in the target machine. | |
2146d243 RM |
620 | SAVE is a pointer to the same save area |
621 | that was previously passed to target_insert_breakpoint. | |
c906108c SS |
622 | Result is 0 for success, or an errno value. */ |
623 | ||
624 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 625 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
626 | |
627 | /* Initialize the terminal settings we record for the inferior, | |
628 | before we actually run the inferior. */ | |
629 | ||
630 | #define target_terminal_init() \ | |
0d06e24b | 631 | (*current_target.to_terminal_init) () |
c906108c SS |
632 | |
633 | /* Put the inferior's terminal settings into effect. | |
634 | This is preparation for starting or resuming the inferior. */ | |
635 | ||
636 | #define target_terminal_inferior() \ | |
0d06e24b | 637 | (*current_target.to_terminal_inferior) () |
c906108c SS |
638 | |
639 | /* Put some of our terminal settings into effect, | |
640 | enough to get proper results from our output, | |
641 | but do not change into or out of RAW mode | |
642 | so that no input is discarded. | |
643 | ||
644 | After doing this, either terminal_ours or terminal_inferior | |
645 | should be called to get back to a normal state of affairs. */ | |
646 | ||
647 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 648 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
649 | |
650 | /* Put our terminal settings into effect. | |
651 | First record the inferior's terminal settings | |
652 | so they can be restored properly later. */ | |
653 | ||
654 | #define target_terminal_ours() \ | |
0d06e24b | 655 | (*current_target.to_terminal_ours) () |
c906108c | 656 | |
a790ad35 SC |
657 | /* Save our terminal settings. |
658 | This is called from TUI after entering or leaving the curses | |
659 | mode. Since curses modifies our terminal this call is here | |
660 | to take this change into account. */ | |
661 | ||
662 | #define target_terminal_save_ours() \ | |
663 | (*current_target.to_terminal_save_ours) () | |
664 | ||
c906108c SS |
665 | /* Print useful information about our terminal status, if such a thing |
666 | exists. */ | |
667 | ||
668 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 669 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
670 | |
671 | /* Kill the inferior process. Make it go away. */ | |
672 | ||
673 | #define target_kill() \ | |
0d06e24b | 674 | (*current_target.to_kill) () |
c906108c | 675 | |
0d06e24b JM |
676 | /* Load an executable file into the target process. This is expected |
677 | to not only bring new code into the target process, but also to | |
678 | update GDB's symbol tables to match. */ | |
c906108c | 679 | |
11cf8741 | 680 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
681 | |
682 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
683 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
684 | symbol should be returned. The result is 0 if successful, nonzero | |
685 | if the symbol does not exist in the target environment. This | |
686 | function should not call error() if communication with the target | |
687 | is interrupted, since it is called from symbol reading, but should | |
688 | return nonzero, possibly doing a complain(). */ | |
c906108c | 689 | |
0d06e24b JM |
690 | #define target_lookup_symbol(name, addrp) \ |
691 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c | 692 | |
39f77062 | 693 | /* Start an inferior process and set inferior_ptid to its pid. |
c906108c SS |
694 | EXEC_FILE is the file to run. |
695 | ALLARGS is a string containing the arguments to the program. | |
696 | ENV is the environment vector to pass. Errors reported with error(). | |
697 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 698 | |
c27cda74 AC |
699 | #define target_create_inferior(exec_file, args, env, FROM_TTY) \ |
700 | (*current_target.to_create_inferior) (exec_file, args, env, (FROM_TTY)) | |
c906108c SS |
701 | |
702 | ||
703 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
704 | notification of inferior events such as fork and vork immediately | |
705 | after the inferior is created. (This because of how gdb gets an | |
706 | inferior created via invoking a shell to do it. In such a scenario, | |
707 | if the shell init file has commands in it, the shell will fork and | |
708 | exec for each of those commands, and we will see each such fork | |
709 | event. Very bad.) | |
c5aa993b | 710 | |
0d06e24b JM |
711 | Such targets will supply an appropriate definition for this function. */ |
712 | ||
39f77062 KB |
713 | #define target_post_startup_inferior(ptid) \ |
714 | (*current_target.to_post_startup_inferior) (ptid) | |
c906108c SS |
715 | |
716 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
717 | some synchronization between gdb and the new inferior process, PID. */ |
718 | ||
c906108c | 719 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 720 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c | 721 | |
0d06e24b JM |
722 | /* On some targets, we can catch an inferior fork or vfork event when |
723 | it occurs. These functions insert/remove an already-created | |
724 | catchpoint for such events. */ | |
c906108c | 725 | |
c906108c | 726 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 727 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
728 | |
729 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 730 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
731 | |
732 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 733 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
734 | |
735 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 736 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c | 737 | |
6604731b DJ |
738 | /* If the inferior forks or vforks, this function will be called at |
739 | the next resume in order to perform any bookkeeping and fiddling | |
740 | necessary to continue debugging either the parent or child, as | |
741 | requested, and releasing the other. Information about the fork | |
742 | or vfork event is available via get_last_target_status (). | |
743 | This function returns 1 if the inferior should not be resumed | |
744 | (i.e. there is another event pending). */ | |
0d06e24b | 745 | |
6604731b DJ |
746 | #define target_follow_fork(follow_child) \ |
747 | (*current_target.to_follow_fork) (follow_child) | |
c906108c SS |
748 | |
749 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
750 | occurs. These functions insert/remove an already-created |
751 | catchpoint for such events. */ | |
752 | ||
c906108c | 753 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 754 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 755 | |
c906108c | 756 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 757 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c | 758 | |
c906108c SS |
759 | /* Returns the number of exec events that are reported when a process |
760 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
761 | events are being reported. */ |
762 | ||
c906108c | 763 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 764 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c | 765 | |
c906108c | 766 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the |
0d06e24b JM |
767 | exit code of PID, if any. */ |
768 | ||
c906108c | 769 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 770 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
771 | |
772 | /* The debugger has completed a blocking wait() call. There is now | |
2146d243 | 773 | some process event that must be processed. This function should |
c906108c | 774 | be defined by those targets that require the debugger to perform |
0d06e24b | 775 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
776 | |
777 | /* The inferior process has died. Do what is right. */ | |
778 | ||
779 | #define target_mourn_inferior() \ | |
0d06e24b | 780 | (*current_target.to_mourn_inferior) () |
c906108c SS |
781 | |
782 | /* Does target have enough data to do a run or attach command? */ | |
783 | ||
784 | #define target_can_run(t) \ | |
0d06e24b | 785 | ((t)->to_can_run) () |
c906108c SS |
786 | |
787 | /* post process changes to signal handling in the inferior. */ | |
788 | ||
39f77062 KB |
789 | #define target_notice_signals(ptid) \ |
790 | (*current_target.to_notice_signals) (ptid) | |
c906108c SS |
791 | |
792 | /* Check to see if a thread is still alive. */ | |
793 | ||
39f77062 KB |
794 | #define target_thread_alive(ptid) \ |
795 | (*current_target.to_thread_alive) (ptid) | |
c906108c | 796 | |
b83266a0 SS |
797 | /* Query for new threads and add them to the thread list. */ |
798 | ||
799 | #define target_find_new_threads() \ | |
0d06e24b | 800 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 801 | |
0d06e24b JM |
802 | /* Make target stop in a continuable fashion. (For instance, under |
803 | Unix, this should act like SIGSTOP). This function is normally | |
804 | used by GUIs to implement a stop button. */ | |
c906108c SS |
805 | |
806 | #define target_stop current_target.to_stop | |
807 | ||
96baa820 JM |
808 | /* Send the specified COMMAND to the target's monitor |
809 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 810 | placed in OUTBUF. */ |
96baa820 JM |
811 | |
812 | #define target_rcmd(command, outbuf) \ | |
813 | (*current_target.to_rcmd) (command, outbuf) | |
814 | ||
815 | ||
c906108c | 816 | /* Get the symbol information for a breakpointable routine called when |
2146d243 | 817 | an exception event occurs. |
c906108c SS |
818 | Intended mainly for C++, and for those |
819 | platforms/implementations where such a callback mechanism is available, | |
820 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 821 | different mechanisms for debugging exceptions. */ |
c906108c SS |
822 | |
823 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 824 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 825 | |
0d06e24b | 826 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 827 | |
c906108c | 828 | #define target_get_current_exception_event() \ |
0d06e24b | 829 | (*current_target.to_get_current_exception_event) () |
c906108c | 830 | |
c906108c SS |
831 | /* Does the target include all of memory, or only part of it? This |
832 | determines whether we look up the target chain for other parts of | |
833 | memory if this target can't satisfy a request. */ | |
834 | ||
835 | #define target_has_all_memory \ | |
0d06e24b | 836 | (current_target.to_has_all_memory) |
c906108c SS |
837 | |
838 | /* Does the target include memory? (Dummy targets don't.) */ | |
839 | ||
840 | #define target_has_memory \ | |
0d06e24b | 841 | (current_target.to_has_memory) |
c906108c SS |
842 | |
843 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
844 | we start a process.) */ | |
c5aa993b | 845 | |
c906108c | 846 | #define target_has_stack \ |
0d06e24b | 847 | (current_target.to_has_stack) |
c906108c SS |
848 | |
849 | /* Does the target have registers? (Exec files don't.) */ | |
850 | ||
851 | #define target_has_registers \ | |
0d06e24b | 852 | (current_target.to_has_registers) |
c906108c SS |
853 | |
854 | /* Does the target have execution? Can we make it jump (through | |
855 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
856 | way, it needs to check whether an inferior actually exists. | |
857 | remote-udi.c and probably other targets can be the current target | |
858 | when the inferior doesn't actually exist at the moment. Right now | |
859 | this just tells us whether this target is *capable* of execution. */ | |
860 | ||
861 | #define target_has_execution \ | |
0d06e24b | 862 | (current_target.to_has_execution) |
c906108c SS |
863 | |
864 | /* Can the target support the debugger control of thread execution? | |
865 | a) Can it lock the thread scheduler? | |
866 | b) Can it switch the currently running thread? */ | |
867 | ||
868 | #define target_can_lock_scheduler \ | |
0d06e24b | 869 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
870 | |
871 | #define target_can_switch_threads \ | |
0d06e24b | 872 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 873 | |
6426a772 JM |
874 | /* Can the target support asynchronous execution? */ |
875 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
876 | ||
877 | /* Is the target in asynchronous execution mode? */ | |
878 | #define target_is_async_p() (current_target.to_is_async_p()) | |
879 | ||
880 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
881 | #define target_async(CALLBACK,CONTEXT) \ |
882 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 883 | |
04714b91 AC |
884 | /* This is to be used ONLY within call_function_by_hand(). It provides |
885 | a workaround, to have inferior function calls done in sychronous | |
886 | mode, even though the target is asynchronous. After | |
ed9a39eb JM |
887 | target_async_mask(0) is called, calls to target_can_async_p() will |
888 | return FALSE , so that target_resume() will not try to start the | |
889 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
890 | restore the previous nature of the target, by calling | |
891 | target_async_mask(1). After that, target_can_async_p() will return | |
04714b91 | 892 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. |
ed9a39eb JM |
893 | |
894 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
895 | the turning async on and off to the single execution commands, | |
0d06e24b | 896 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
897 | |
898 | #define target_async_mask_value \ | |
0d06e24b | 899 | (current_target.to_async_mask_value) |
ed9a39eb | 900 | |
2146d243 | 901 | extern int target_async_mask (int mask); |
ed9a39eb | 902 | |
a14ed312 | 903 | extern void target_link (char *, CORE_ADDR *); |
c906108c SS |
904 | |
905 | /* Converts a process id to a string. Usually, the string just contains | |
906 | `process xyz', but on some systems it may contain | |
907 | `process xyz thread abc'. */ | |
908 | ||
ed9a39eb JM |
909 | #undef target_pid_to_str |
910 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
911 | |
912 | #ifndef target_tid_to_str | |
913 | #define target_tid_to_str(PID) \ | |
0d06e24b | 914 | target_pid_to_str (PID) |
39f77062 | 915 | extern char *normal_pid_to_str (ptid_t ptid); |
c906108c | 916 | #endif |
c5aa993b | 917 | |
0d06e24b JM |
918 | /* Return a short string describing extra information about PID, |
919 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
920 | is okay. */ | |
921 | ||
922 | #define target_extra_thread_info(TP) \ | |
923 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 924 | |
11cf8741 JM |
925 | /* |
926 | * New Objfile Event Hook: | |
927 | * | |
928 | * Sometimes a GDB component wants to get notified whenever a new | |
2146d243 | 929 | * objfile is loaded. Mainly this is used by thread-debugging |
11cf8741 JM |
930 | * implementations that need to know when symbols for the target |
931 | * thread implemenation are available. | |
932 | * | |
933 | * The old way of doing this is to define a macro 'target_new_objfile' | |
934 | * that points to the function that you want to be called on every | |
935 | * objfile/shlib load. | |
9a4105ab AC |
936 | |
937 | The new way is to grab the function pointer, | |
938 | 'deprecated_target_new_objfile_hook', and point it to the function | |
939 | that you want to be called on every objfile/shlib load. | |
940 | ||
941 | If multiple clients are willing to be cooperative, they can each | |
942 | save a pointer to the previous value of | |
943 | deprecated_target_new_objfile_hook before modifying it, and arrange | |
944 | for their function to call the previous function in the chain. In | |
945 | that way, multiple clients can receive this notification (something | |
946 | like with signal handlers). */ | |
947 | ||
948 | extern void (*deprecated_target_new_objfile_hook) (struct objfile *); | |
c906108c SS |
949 | |
950 | #ifndef target_pid_or_tid_to_str | |
951 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 952 | target_pid_to_str (ID) |
c906108c SS |
953 | #endif |
954 | ||
955 | /* Attempts to find the pathname of the executable file | |
956 | that was run to create a specified process. | |
957 | ||
958 | The process PID must be stopped when this operation is used. | |
c5aa993b | 959 | |
c906108c SS |
960 | If the executable file cannot be determined, NULL is returned. |
961 | ||
962 | Else, a pointer to a character string containing the pathname | |
963 | is returned. This string should be copied into a buffer by | |
964 | the client if the string will not be immediately used, or if | |
0d06e24b | 965 | it must persist. */ |
c906108c SS |
966 | |
967 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 968 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 969 | |
be4d1333 MS |
970 | /* |
971 | * Iterator function for target memory regions. | |
972 | * Calls a callback function once for each memory region 'mapped' | |
973 | * in the child process. Defined as a simple macro rather than | |
2146d243 | 974 | * as a function macro so that it can be tested for nullity. |
be4d1333 MS |
975 | */ |
976 | ||
977 | #define target_find_memory_regions(FUNC, DATA) \ | |
978 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
979 | ||
980 | /* | |
981 | * Compose corefile .note section. | |
982 | */ | |
983 | ||
984 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
985 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
986 | ||
3f47be5c EZ |
987 | /* Thread-local values. */ |
988 | #define target_get_thread_local_address \ | |
989 | (current_target.to_get_thread_local_address) | |
990 | #define target_get_thread_local_address_p() \ | |
991 | (target_get_thread_local_address != NULL) | |
992 | ||
9d8a64cb | 993 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
994 | started. */ |
995 | ||
996 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
997 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
998 | #endif | |
999 | ||
1000 | /* Hardware watchpoint interfaces. */ | |
1001 | ||
1002 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
1003 | write). */ | |
1004 | ||
1005 | #ifndef STOPPED_BY_WATCHPOINT | |
ccaa32c7 GS |
1006 | #define STOPPED_BY_WATCHPOINT(w) \ |
1007 | (*current_target.to_stopped_by_watchpoint) () | |
c906108c | 1008 | #endif |
7df1a324 KW |
1009 | |
1010 | /* Non-zero if we have continuable watchpoints */ | |
1011 | ||
1012 | #ifndef HAVE_CONTINUABLE_WATCHPOINT | |
1013 | #define HAVE_CONTINUABLE_WATCHPOINT \ | |
1014 | (current_target.to_have_continuable_watchpoint) | |
1015 | #endif | |
c906108c SS |
1016 | |
1017 | /* HP-UX supplies these operations, which respectively disable and enable | |
1018 | the memory page-protections that are used to implement hardware watchpoints | |
0d06e24b JM |
1019 | on that platform. See wait_for_inferior's use of these. */ |
1020 | ||
c906108c SS |
1021 | #if !defined(TARGET_DISABLE_HW_WATCHPOINTS) |
1022 | #define TARGET_DISABLE_HW_WATCHPOINTS(pid) | |
1023 | #endif | |
1024 | ||
1025 | #if !defined(TARGET_ENABLE_HW_WATCHPOINTS) | |
1026 | #define TARGET_ENABLE_HW_WATCHPOINTS(pid) | |
1027 | #endif | |
1028 | ||
ccaa32c7 | 1029 | /* Provide defaults for hardware watchpoint functions. */ |
c906108c | 1030 | |
2146d243 | 1031 | /* If the *_hw_beakpoint functions have not been defined |
ccaa32c7 | 1032 | elsewhere use the definitions in the target vector. */ |
c906108c SS |
1033 | |
1034 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
1035 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
1036 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
1037 | (including this one?). OTHERTYPE is who knows what... */ | |
1038 | ||
ccaa32c7 GS |
1039 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
1040 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ | |
1041 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
1042 | #endif | |
c906108c SS |
1043 | |
1044 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
1045 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \ | |
ccaa32c7 | 1046 | (*current_target.to_region_size_ok_for_hw_watchpoint) (byte_count) |
c906108c SS |
1047 | #endif |
1048 | ||
c906108c SS |
1049 | |
1050 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1051 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1052 | success, non-zero for failure. */ | |
1053 | ||
ccaa32c7 GS |
1054 | #ifndef target_insert_watchpoint |
1055 | #define target_insert_watchpoint(addr, len, type) \ | |
1056 | (*current_target.to_insert_watchpoint) (addr, len, type) | |
c906108c | 1057 | |
ccaa32c7 GS |
1058 | #define target_remove_watchpoint(addr, len, type) \ |
1059 | (*current_target.to_remove_watchpoint) (addr, len, type) | |
1060 | #endif | |
c906108c SS |
1061 | |
1062 | #ifndef target_insert_hw_breakpoint | |
ccaa32c7 GS |
1063 | #define target_insert_hw_breakpoint(addr, save) \ |
1064 | (*current_target.to_insert_hw_breakpoint) (addr, save) | |
1065 | ||
1066 | #define target_remove_hw_breakpoint(addr, save) \ | |
1067 | (*current_target.to_remove_hw_breakpoint) (addr, save) | |
c906108c SS |
1068 | #endif |
1069 | ||
1070 | #ifndef target_stopped_data_address | |
ccaa32c7 GS |
1071 | #define target_stopped_data_address() \ |
1072 | (*current_target.to_stopped_data_address) () | |
c906108c SS |
1073 | #endif |
1074 | ||
c906108c SS |
1075 | /* This will only be defined by a target that supports catching vfork events, |
1076 | such as HP-UX. | |
1077 | ||
1078 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1079 | child process after it has exec'd, causes the parent process to resume as | |
1080 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1081 | define this to a function that prevents that from happening. */ |
c906108c SS |
1082 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1083 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1084 | #endif | |
1085 | ||
1086 | /* This will only be defined by a target that supports catching vfork events, | |
1087 | such as HP-UX. | |
1088 | ||
1089 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1090 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1091 | vfork event will be delivered to us. */ |
1092 | ||
c906108c SS |
1093 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1094 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1095 | #endif | |
1096 | ||
1097 | /* Routines for maintenance of the target structures... | |
1098 | ||
1099 | add_target: Add a target to the list of all possible targets. | |
1100 | ||
1101 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1102 | targets, within its particular stratum of the stack. Result |
1103 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1104 | should warn user). | |
c906108c SS |
1105 | |
1106 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1107 | no matter where it is on the list. Returns 0 if no |
1108 | change, 1 if removed from stack. | |
c906108c | 1109 | |
c5aa993b | 1110 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1111 | |
a14ed312 | 1112 | extern void add_target (struct target_ops *); |
c906108c | 1113 | |
a14ed312 | 1114 | extern int push_target (struct target_ops *); |
c906108c | 1115 | |
a14ed312 | 1116 | extern int unpush_target (struct target_ops *); |
c906108c | 1117 | |
a14ed312 | 1118 | extern void target_preopen (int); |
c906108c | 1119 | |
a14ed312 | 1120 | extern void pop_target (void); |
c906108c SS |
1121 | |
1122 | /* Struct section_table maps address ranges to file sections. It is | |
1123 | mostly used with BFD files, but can be used without (e.g. for handling | |
1124 | raw disks, or files not in formats handled by BFD). */ | |
1125 | ||
c5aa993b JM |
1126 | struct section_table |
1127 | { | |
1128 | CORE_ADDR addr; /* Lowest address in section */ | |
1129 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1130 | |
7be0c536 | 1131 | struct bfd_section *the_bfd_section; |
c906108c | 1132 | |
c5aa993b JM |
1133 | bfd *bfd; /* BFD file pointer */ |
1134 | }; | |
c906108c | 1135 | |
8db32d44 AC |
1136 | /* Return the "section" containing the specified address. */ |
1137 | struct section_table *target_section_by_addr (struct target_ops *target, | |
1138 | CORE_ADDR addr); | |
1139 | ||
1140 | ||
c906108c SS |
1141 | /* From mem-break.c */ |
1142 | ||
a14ed312 | 1143 | extern int memory_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 1144 | |
a14ed312 | 1145 | extern int memory_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 1146 | |
a14ed312 | 1147 | extern int default_memory_remove_breakpoint (CORE_ADDR, char *); |
917317f4 | 1148 | |
a14ed312 | 1149 | extern int default_memory_insert_breakpoint (CORE_ADDR, char *); |
917317f4 | 1150 | |
c906108c SS |
1151 | |
1152 | /* From target.c */ | |
1153 | ||
a14ed312 | 1154 | extern void initialize_targets (void); |
c906108c | 1155 | |
a14ed312 | 1156 | extern void noprocess (void); |
c906108c | 1157 | |
a14ed312 | 1158 | extern void find_default_attach (char *, int); |
c906108c | 1159 | |
c27cda74 | 1160 | extern void find_default_create_inferior (char *, char *, char **, int); |
c906108c | 1161 | |
a14ed312 | 1162 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1163 | |
a14ed312 | 1164 | extern struct target_ops *find_core_target (void); |
6426a772 | 1165 | |
a14ed312 | 1166 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb | 1167 | |
570b8f7c AC |
1168 | extern int target_resize_to_sections (struct target_ops *target, |
1169 | int num_added); | |
07cd4b97 JB |
1170 | |
1171 | extern void remove_target_sections (bfd *abfd); | |
1172 | ||
c906108c SS |
1173 | \f |
1174 | /* Stuff that should be shared among the various remote targets. */ | |
1175 | ||
1176 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1177 | information (higher values, more information). */ | |
1178 | extern int remote_debug; | |
1179 | ||
1180 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1181 | extern int baud_rate; | |
1182 | /* Timeout limit for response from target. */ | |
1183 | extern int remote_timeout; | |
1184 | ||
c906108c SS |
1185 | \f |
1186 | /* Functions for helping to write a native target. */ | |
1187 | ||
1188 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1189 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1190 | |
c2d11a7d | 1191 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1192 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1193 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1194 | to the shorter target_signal_p() because it is far less ambigious. | |
1195 | In this context ``target_signal'' refers to GDB's internal | |
1196 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1197 | refers to the target operating system's signal. Confused? */ |
1198 | ||
c2d11a7d JM |
1199 | extern int target_signal_to_host_p (enum target_signal signo); |
1200 | ||
1201 | /* Convert between host signal numbers and enum target_signal's. | |
1202 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1203 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1204 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1205 | refering to the target operating system's signal numbering. | |
1206 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1207 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1208 | internal representation of a target operating system's signal. */ |
1209 | ||
a14ed312 KB |
1210 | extern enum target_signal target_signal_from_host (int); |
1211 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1212 | |
1213 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1214 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1215 | |
1216 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1217 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1218 | \f |
1219 | /* Imported from machine dependent code */ | |
1220 | ||
c906108c | 1221 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1222 | void target_ignore (void); |
c906108c | 1223 | |
5ac10fd1 AC |
1224 | extern struct target_ops child_ops; |
1225 | ||
c5aa993b | 1226 | #endif /* !defined (TARGET_H) */ |