Commit | Line | Data |
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c906108c | 1 | /* Interface between GDB and target environments, including files and processes |
0088c768 | 2 | |
197e01b6 | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
f6519ebc MK |
4 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
5 | Free Software Foundation, Inc. | |
0088c768 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. Written by John Gilmore. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
23 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
25 | |
26 | #if !defined (TARGET_H) | |
27 | #define TARGET_H | |
28 | ||
da3331ec AC |
29 | struct objfile; |
30 | struct ui_file; | |
31 | struct mem_attrib; | |
1e3ff5ad | 32 | struct target_ops; |
da3331ec | 33 | |
c906108c SS |
34 | /* This include file defines the interface between the main part |
35 | of the debugger, and the part which is target-specific, or | |
36 | specific to the communications interface between us and the | |
37 | target. | |
38 | ||
2146d243 RM |
39 | A TARGET is an interface between the debugger and a particular |
40 | kind of file or process. Targets can be STACKED in STRATA, | |
c906108c SS |
41 | so that more than one target can potentially respond to a request. |
42 | In particular, memory accesses will walk down the stack of targets | |
43 | until they find a target that is interested in handling that particular | |
44 | address. STRATA are artificial boundaries on the stack, within | |
45 | which particular kinds of targets live. Strata exist so that | |
46 | people don't get confused by pushing e.g. a process target and then | |
47 | a file target, and wondering why they can't see the current values | |
48 | of variables any more (the file target is handling them and they | |
49 | never get to the process target). So when you push a file target, | |
50 | it goes into the file stratum, which is always below the process | |
51 | stratum. */ | |
52 | ||
53 | #include "bfd.h" | |
54 | #include "symtab.h" | |
4930751a | 55 | #include "dcache.h" |
29e57380 | 56 | #include "memattr.h" |
c906108c | 57 | |
c5aa993b JM |
58 | enum strata |
59 | { | |
60 | dummy_stratum, /* The lowest of the low */ | |
61 | file_stratum, /* Executable files, etc */ | |
62 | core_stratum, /* Core dump files */ | |
63 | download_stratum, /* Downloading of remote targets */ | |
d4f3574e SS |
64 | process_stratum, /* Executing processes */ |
65 | thread_stratum /* Executing threads */ | |
c5aa993b | 66 | }; |
c906108c | 67 | |
c5aa993b JM |
68 | enum thread_control_capabilities |
69 | { | |
0d06e24b JM |
70 | tc_none = 0, /* Default: can't control thread execution. */ |
71 | tc_schedlock = 1, /* Can lock the thread scheduler. */ | |
72 | tc_switch = 2 /* Can switch the running thread on demand. */ | |
c5aa993b | 73 | }; |
c906108c SS |
74 | |
75 | /* Stuff for target_wait. */ | |
76 | ||
77 | /* Generally, what has the program done? */ | |
c5aa993b JM |
78 | enum target_waitkind |
79 | { | |
80 | /* The program has exited. The exit status is in value.integer. */ | |
81 | TARGET_WAITKIND_EXITED, | |
c906108c | 82 | |
0d06e24b JM |
83 | /* The program has stopped with a signal. Which signal is in |
84 | value.sig. */ | |
c5aa993b | 85 | TARGET_WAITKIND_STOPPED, |
c906108c | 86 | |
c5aa993b JM |
87 | /* The program has terminated with a signal. Which signal is in |
88 | value.sig. */ | |
89 | TARGET_WAITKIND_SIGNALLED, | |
c906108c | 90 | |
c5aa993b JM |
91 | /* The program is letting us know that it dynamically loaded something |
92 | (e.g. it called load(2) on AIX). */ | |
93 | TARGET_WAITKIND_LOADED, | |
c906108c | 94 | |
0d06e24b JM |
95 | /* The program has forked. A "related" process' ID is in |
96 | value.related_pid. I.e., if the child forks, value.related_pid | |
97 | is the parent's ID. */ | |
98 | ||
c5aa993b | 99 | TARGET_WAITKIND_FORKED, |
c906108c | 100 | |
0d06e24b JM |
101 | /* The program has vforked. A "related" process's ID is in |
102 | value.related_pid. */ | |
103 | ||
c5aa993b | 104 | TARGET_WAITKIND_VFORKED, |
c906108c | 105 | |
0d06e24b JM |
106 | /* The program has exec'ed a new executable file. The new file's |
107 | pathname is pointed to by value.execd_pathname. */ | |
108 | ||
c5aa993b | 109 | TARGET_WAITKIND_EXECD, |
c906108c | 110 | |
0d06e24b JM |
111 | /* The program has entered or returned from a system call. On |
112 | HP-UX, this is used in the hardware watchpoint implementation. | |
113 | The syscall's unique integer ID number is in value.syscall_id */ | |
114 | ||
c5aa993b JM |
115 | TARGET_WAITKIND_SYSCALL_ENTRY, |
116 | TARGET_WAITKIND_SYSCALL_RETURN, | |
c906108c | 117 | |
c5aa993b JM |
118 | /* Nothing happened, but we stopped anyway. This perhaps should be handled |
119 | within target_wait, but I'm not sure target_wait should be resuming the | |
120 | inferior. */ | |
c4093a6a JM |
121 | TARGET_WAITKIND_SPURIOUS, |
122 | ||
8e7d2c16 DJ |
123 | /* An event has occured, but we should wait again. |
124 | Remote_async_wait() returns this when there is an event | |
c4093a6a JM |
125 | on the inferior, but the rest of the world is not interested in |
126 | it. The inferior has not stopped, but has just sent some output | |
127 | to the console, for instance. In this case, we want to go back | |
128 | to the event loop and wait there for another event from the | |
129 | inferior, rather than being stuck in the remote_async_wait() | |
130 | function. This way the event loop is responsive to other events, | |
0d06e24b | 131 | like for instance the user typing. */ |
c4093a6a | 132 | TARGET_WAITKIND_IGNORE |
c906108c SS |
133 | }; |
134 | ||
c5aa993b JM |
135 | struct target_waitstatus |
136 | { | |
137 | enum target_waitkind kind; | |
138 | ||
139 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
140 | union | |
141 | { | |
142 | int integer; | |
143 | enum target_signal sig; | |
144 | int related_pid; | |
145 | char *execd_pathname; | |
146 | int syscall_id; | |
147 | } | |
148 | value; | |
149 | }; | |
c906108c | 150 | |
2acceee2 | 151 | /* Possible types of events that the inferior handler will have to |
0d06e24b | 152 | deal with. */ |
2acceee2 JM |
153 | enum inferior_event_type |
154 | { | |
0d06e24b | 155 | /* There is a request to quit the inferior, abandon it. */ |
2acceee2 JM |
156 | INF_QUIT_REQ, |
157 | /* Process a normal inferior event which will result in target_wait | |
0d06e24b | 158 | being called. */ |
2146d243 | 159 | INF_REG_EVENT, |
0d06e24b | 160 | /* Deal with an error on the inferior. */ |
2acceee2 | 161 | INF_ERROR, |
0d06e24b | 162 | /* We are called because a timer went off. */ |
2acceee2 | 163 | INF_TIMER, |
0d06e24b | 164 | /* We are called to do stuff after the inferior stops. */ |
c2d11a7d JM |
165 | INF_EXEC_COMPLETE, |
166 | /* We are called to do some stuff after the inferior stops, but we | |
167 | are expected to reenter the proceed() and | |
168 | handle_inferior_event() functions. This is used only in case of | |
0d06e24b | 169 | 'step n' like commands. */ |
c2d11a7d | 170 | INF_EXEC_CONTINUE |
2acceee2 JM |
171 | }; |
172 | ||
c906108c | 173 | /* Return the string for a signal. */ |
a14ed312 | 174 | extern char *target_signal_to_string (enum target_signal); |
c906108c SS |
175 | |
176 | /* Return the name (SIGHUP, etc.) for a signal. */ | |
a14ed312 | 177 | extern char *target_signal_to_name (enum target_signal); |
c906108c SS |
178 | |
179 | /* Given a name (SIGHUP, etc.), return its signal. */ | |
a14ed312 | 180 | enum target_signal target_signal_from_name (char *); |
c906108c | 181 | \f |
1e3ff5ad AC |
182 | /* Request the transfer of up to LEN 8-bit bytes of the target's |
183 | OBJECT. The OFFSET, for a seekable object, specifies the starting | |
184 | point. The ANNEX can be used to provide additional data-specific | |
185 | information to the target. | |
186 | ||
187 | Return the number of bytes actually transfered, zero when no | |
188 | further transfer is possible, and -1 when the transfer is not | |
189 | supported. | |
2146d243 | 190 | |
1e3ff5ad AC |
191 | NOTE: cagney/2003-10-17: The current interface does not support a |
192 | "retry" mechanism. Instead it assumes that at least one byte will | |
193 | be transfered on each call. | |
194 | ||
195 | NOTE: cagney/2003-10-17: The current interface can lead to | |
196 | fragmented transfers. Lower target levels should not implement | |
197 | hacks, such as enlarging the transfer, in an attempt to compensate | |
198 | for this. Instead, the target stack should be extended so that it | |
199 | implements supply/collect methods and a look-aside object cache. | |
200 | With that available, the lowest target can safely and freely "push" | |
201 | data up the stack. | |
202 | ||
203 | NOTE: cagney/2003-10-17: Unlike the old query and the memory | |
204 | transfer mechanisms, these methods are explicitly parameterized by | |
205 | the target that it should be applied to. | |
206 | ||
207 | NOTE: cagney/2003-10-17: Just like the old query and memory xfer | |
208 | methods, these new methods perform partial transfers. The only | |
209 | difference is that these new methods thought to include "partial" | |
210 | in the name. The old code's failure to do this lead to much | |
211 | confusion and duplication of effort as each target object attempted | |
212 | to locally take responsibility for something it didn't have to | |
213 | worry about. | |
214 | ||
4b8a223f AC |
215 | NOTE: cagney/2003-10-17: With a TARGET_OBJECT_KOD object, for |
216 | backward compatibility with the "target_query" method that this | |
217 | replaced, when OFFSET and LEN are both zero, return the "minimum" | |
218 | buffer size. See "remote.c" for further information. */ | |
1e3ff5ad AC |
219 | |
220 | enum target_object | |
221 | { | |
222 | /* Kernel Object Display transfer. See "kod.c" and "remote.c". */ | |
223 | TARGET_OBJECT_KOD, | |
224 | /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */ | |
225 | TARGET_OBJECT_AVR, | |
226 | /* Transfer up-to LEN bytes of memory starting at OFFSET. */ | |
287a334e JJ |
227 | TARGET_OBJECT_MEMORY, |
228 | /* Kernel Unwind Table. See "ia64-tdep.c". */ | |
229 | TARGET_OBJECT_UNWIND_TABLE, | |
2146d243 RM |
230 | /* Transfer auxilliary vector. */ |
231 | TARGET_OBJECT_AUXV, | |
baf92889 MK |
232 | /* StackGhost cookie. See "sparc-tdep.c". */ |
233 | TARGET_OBJECT_WCOOKIE | |
2146d243 RM |
234 | |
235 | /* Possible future objects: TARGET_OBJECT_FILE, TARGET_OBJECT_PROC, ... */ | |
1e3ff5ad AC |
236 | }; |
237 | ||
238 | extern LONGEST target_read_partial (struct target_ops *ops, | |
239 | enum target_object object, | |
1b0ba102 | 240 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
241 | ULONGEST offset, LONGEST len); |
242 | ||
243 | extern LONGEST target_write_partial (struct target_ops *ops, | |
244 | enum target_object object, | |
1b0ba102 | 245 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
246 | ULONGEST offset, LONGEST len); |
247 | ||
248 | /* Wrappers to perform the full transfer. */ | |
249 | extern LONGEST target_read (struct target_ops *ops, | |
250 | enum target_object object, | |
1b0ba102 | 251 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
252 | ULONGEST offset, LONGEST len); |
253 | ||
254 | extern LONGEST target_write (struct target_ops *ops, | |
255 | enum target_object object, | |
1b0ba102 | 256 | const char *annex, const gdb_byte *buf, |
1e3ff5ad | 257 | ULONGEST offset, LONGEST len); |
b6591e8b AC |
258 | |
259 | /* Wrappers to target read/write that perform memory transfers. They | |
260 | throw an error if the memory transfer fails. | |
261 | ||
262 | NOTE: cagney/2003-10-23: The naming schema is lifted from | |
263 | "frame.h". The parameter order is lifted from get_frame_memory, | |
264 | which in turn lifted it from read_memory. */ | |
265 | ||
266 | extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr, | |
1b0ba102 | 267 | gdb_byte *buf, LONGEST len); |
b6591e8b AC |
268 | extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, |
269 | CORE_ADDR addr, int len); | |
1e3ff5ad | 270 | \f |
c5aa993b | 271 | |
c906108c SS |
272 | /* If certain kinds of activity happen, target_wait should perform |
273 | callbacks. */ | |
274 | /* Right now we just call (*TARGET_ACTIVITY_FUNCTION) if I/O is possible | |
0d06e24b | 275 | on TARGET_ACTIVITY_FD. */ |
c906108c SS |
276 | extern int target_activity_fd; |
277 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
507f3c78 | 278 | extern int (*target_activity_function) (void); |
c906108c | 279 | \f |
0d06e24b JM |
280 | struct thread_info; /* fwd decl for parameter list below: */ |
281 | ||
c906108c | 282 | struct target_ops |
c5aa993b | 283 | { |
258b763a | 284 | struct target_ops *beneath; /* To the target under this one. */ |
c5aa993b JM |
285 | char *to_shortname; /* Name this target type */ |
286 | char *to_longname; /* Name for printing */ | |
287 | char *to_doc; /* Documentation. Does not include trailing | |
c906108c | 288 | newline, and starts with a one-line descrip- |
0d06e24b | 289 | tion (probably similar to to_longname). */ |
bba2d28d AC |
290 | /* Per-target scratch pad. */ |
291 | void *to_data; | |
f1c07ab0 AC |
292 | /* The open routine takes the rest of the parameters from the |
293 | command, and (if successful) pushes a new target onto the | |
294 | stack. Targets should supply this routine, if only to provide | |
295 | an error message. */ | |
507f3c78 | 296 | void (*to_open) (char *, int); |
f1c07ab0 AC |
297 | /* Old targets with a static target vector provide "to_close". |
298 | New re-entrant targets provide "to_xclose" and that is expected | |
299 | to xfree everything (including the "struct target_ops"). */ | |
300 | void (*to_xclose) (struct target_ops *targ, int quitting); | |
507f3c78 KB |
301 | void (*to_close) (int); |
302 | void (*to_attach) (char *, int); | |
303 | void (*to_post_attach) (int); | |
507f3c78 | 304 | void (*to_detach) (char *, int); |
6ad8ae5c | 305 | void (*to_disconnect) (char *, int); |
39f77062 KB |
306 | void (*to_resume) (ptid_t, int, enum target_signal); |
307 | ptid_t (*to_wait) (ptid_t, struct target_waitstatus *); | |
507f3c78 KB |
308 | void (*to_fetch_registers) (int); |
309 | void (*to_store_registers) (int); | |
310 | void (*to_prepare_to_store) (void); | |
c5aa993b JM |
311 | |
312 | /* Transfer LEN bytes of memory between GDB address MYADDR and | |
313 | target address MEMADDR. If WRITE, transfer them to the target, else | |
314 | transfer them from the target. TARGET is the target from which we | |
315 | get this function. | |
316 | ||
317 | Return value, N, is one of the following: | |
318 | ||
319 | 0 means that we can't handle this. If errno has been set, it is the | |
320 | error which prevented us from doing it (FIXME: What about bfd_error?). | |
321 | ||
322 | positive (call it N) means that we have transferred N bytes | |
323 | starting at MEMADDR. We might be able to handle more bytes | |
324 | beyond this length, but no promises. | |
325 | ||
326 | negative (call its absolute value N) means that we cannot | |
327 | transfer right at MEMADDR, but we could transfer at least | |
c8e73a31 | 328 | something at MEMADDR + N. |
c5aa993b | 329 | |
c8e73a31 AC |
330 | NOTE: cagney/2004-10-01: This has been entirely superseeded by |
331 | to_xfer_partial and inferior inheritance. */ | |
332 | ||
1b0ba102 | 333 | int (*deprecated_xfer_memory) (CORE_ADDR memaddr, gdb_byte *myaddr, |
c8e73a31 AC |
334 | int len, int write, |
335 | struct mem_attrib *attrib, | |
336 | struct target_ops *target); | |
c906108c | 337 | |
507f3c78 | 338 | void (*to_files_info) (struct target_ops *); |
fc1a4b47 AC |
339 | int (*to_insert_breakpoint) (CORE_ADDR, gdb_byte *); |
340 | int (*to_remove_breakpoint) (CORE_ADDR, gdb_byte *); | |
ccaa32c7 | 341 | int (*to_can_use_hw_breakpoint) (int, int, int); |
47b667de AC |
342 | int (*to_insert_hw_breakpoint) (CORE_ADDR, gdb_byte *); |
343 | int (*to_remove_hw_breakpoint) (CORE_ADDR, gdb_byte *); | |
ccaa32c7 GS |
344 | int (*to_remove_watchpoint) (CORE_ADDR, int, int); |
345 | int (*to_insert_watchpoint) (CORE_ADDR, int, int); | |
346 | int (*to_stopped_by_watchpoint) (void); | |
7df1a324 | 347 | int to_have_continuable_watchpoint; |
4aa7a7f5 | 348 | int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *); |
e0d24f8d | 349 | int (*to_region_ok_for_hw_watchpoint) (CORE_ADDR, int); |
507f3c78 KB |
350 | void (*to_terminal_init) (void); |
351 | void (*to_terminal_inferior) (void); | |
352 | void (*to_terminal_ours_for_output) (void); | |
353 | void (*to_terminal_ours) (void); | |
a790ad35 | 354 | void (*to_terminal_save_ours) (void); |
507f3c78 KB |
355 | void (*to_terminal_info) (char *, int); |
356 | void (*to_kill) (void); | |
357 | void (*to_load) (char *, int); | |
358 | int (*to_lookup_symbol) (char *, CORE_ADDR *); | |
c27cda74 | 359 | void (*to_create_inferior) (char *, char *, char **, int); |
39f77062 | 360 | void (*to_post_startup_inferior) (ptid_t); |
507f3c78 | 361 | void (*to_acknowledge_created_inferior) (int); |
fa113d1a | 362 | void (*to_insert_fork_catchpoint) (int); |
507f3c78 | 363 | int (*to_remove_fork_catchpoint) (int); |
fa113d1a | 364 | void (*to_insert_vfork_catchpoint) (int); |
507f3c78 | 365 | int (*to_remove_vfork_catchpoint) (int); |
ee057212 | 366 | int (*to_follow_fork) (struct target_ops *, int); |
fa113d1a | 367 | void (*to_insert_exec_catchpoint) (int); |
507f3c78 | 368 | int (*to_remove_exec_catchpoint) (int); |
507f3c78 | 369 | int (*to_reported_exec_events_per_exec_call) (void); |
507f3c78 KB |
370 | int (*to_has_exited) (int, int, int *); |
371 | void (*to_mourn_inferior) (void); | |
372 | int (*to_can_run) (void); | |
39f77062 KB |
373 | void (*to_notice_signals) (ptid_t ptid); |
374 | int (*to_thread_alive) (ptid_t ptid); | |
507f3c78 | 375 | void (*to_find_new_threads) (void); |
39f77062 | 376 | char *(*to_pid_to_str) (ptid_t); |
507f3c78 KB |
377 | char *(*to_extra_thread_info) (struct thread_info *); |
378 | void (*to_stop) (void); | |
d9fcf2fb | 379 | void (*to_rcmd) (char *command, struct ui_file *output); |
507f3c78 KB |
380 | struct symtab_and_line *(*to_enable_exception_callback) (enum |
381 | exception_event_kind, | |
382 | int); | |
383 | struct exception_event_record *(*to_get_current_exception_event) (void); | |
384 | char *(*to_pid_to_exec_file) (int pid); | |
c5aa993b | 385 | enum strata to_stratum; |
c5aa993b JM |
386 | int to_has_all_memory; |
387 | int to_has_memory; | |
388 | int to_has_stack; | |
389 | int to_has_registers; | |
390 | int to_has_execution; | |
391 | int to_has_thread_control; /* control thread execution */ | |
c5aa993b JM |
392 | struct section_table |
393 | *to_sections; | |
394 | struct section_table | |
395 | *to_sections_end; | |
6426a772 JM |
396 | /* ASYNC target controls */ |
397 | int (*to_can_async_p) (void); | |
398 | int (*to_is_async_p) (void); | |
0d06e24b JM |
399 | void (*to_async) (void (*cb) (enum inferior_event_type, void *context), |
400 | void *context); | |
ed9a39eb | 401 | int to_async_mask_value; |
2146d243 RM |
402 | int (*to_find_memory_regions) (int (*) (CORE_ADDR, |
403 | unsigned long, | |
404 | int, int, int, | |
405 | void *), | |
be4d1333 MS |
406 | void *); |
407 | char * (*to_make_corefile_notes) (bfd *, int *); | |
3f47be5c EZ |
408 | |
409 | /* Return the thread-local address at OFFSET in the | |
410 | thread-local storage for the thread PTID and the shared library | |
411 | or executable file given by OBJFILE. If that block of | |
412 | thread-local storage hasn't been allocated yet, this function | |
413 | may return an error. */ | |
414 | CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid, | |
b2756930 | 415 | CORE_ADDR load_module_addr, |
3f47be5c EZ |
416 | CORE_ADDR offset); |
417 | ||
4b8a223f AC |
418 | /* Perform partial transfers on OBJECT. See target_read_partial |
419 | and target_write_partial for details of each variant. One, and | |
420 | only one, of readbuf or writebuf must be non-NULL. */ | |
421 | LONGEST (*to_xfer_partial) (struct target_ops *ops, | |
8aa91c1e | 422 | enum target_object object, const char *annex, |
1b0ba102 | 423 | gdb_byte *readbuf, const gdb_byte *writebuf, |
8aa91c1e | 424 | ULONGEST offset, LONGEST len); |
1e3ff5ad | 425 | |
c5aa993b | 426 | int to_magic; |
0d06e24b JM |
427 | /* Need sub-structure for target machine related rather than comm related? |
428 | */ | |
c5aa993b | 429 | }; |
c906108c SS |
430 | |
431 | /* Magic number for checking ops size. If a struct doesn't end with this | |
432 | number, somebody changed the declaration but didn't change all the | |
433 | places that initialize one. */ | |
434 | ||
435 | #define OPS_MAGIC 3840 | |
436 | ||
437 | /* The ops structure for our "current" target process. This should | |
438 | never be NULL. If there is no target, it points to the dummy_target. */ | |
439 | ||
c5aa993b | 440 | extern struct target_ops current_target; |
c906108c | 441 | |
c906108c SS |
442 | /* Define easy words for doing these operations on our current target. */ |
443 | ||
444 | #define target_shortname (current_target.to_shortname) | |
445 | #define target_longname (current_target.to_longname) | |
446 | ||
f1c07ab0 AC |
447 | /* Does whatever cleanup is required for a target that we are no |
448 | longer going to be calling. QUITTING indicates that GDB is exiting | |
449 | and should not get hung on an error (otherwise it is important to | |
450 | perform clean termination, even if it takes a while). This routine | |
451 | is automatically always called when popping the target off the | |
452 | target stack (to_beneath is undefined). Closing file descriptors | |
453 | and freeing all memory allocated memory are typical things it | |
454 | should do. */ | |
455 | ||
456 | void target_close (struct target_ops *targ, int quitting); | |
c906108c SS |
457 | |
458 | /* Attaches to a process on the target side. Arguments are as passed | |
459 | to the `attach' command by the user. This routine can be called | |
460 | when the target is not on the target-stack, if the target_can_run | |
2146d243 | 461 | routine returns 1; in that case, it must push itself onto the stack. |
c906108c | 462 | Upon exit, the target should be ready for normal operations, and |
2146d243 | 463 | should be ready to deliver the status of the process immediately |
c906108c SS |
464 | (without waiting) to an upcoming target_wait call. */ |
465 | ||
466 | #define target_attach(args, from_tty) \ | |
0d06e24b | 467 | (*current_target.to_attach) (args, from_tty) |
c906108c SS |
468 | |
469 | /* The target_attach operation places a process under debugger control, | |
470 | and stops the process. | |
471 | ||
472 | This operation provides a target-specific hook that allows the | |
0d06e24b | 473 | necessary bookkeeping to be performed after an attach completes. */ |
c906108c | 474 | #define target_post_attach(pid) \ |
0d06e24b | 475 | (*current_target.to_post_attach) (pid) |
c906108c | 476 | |
c906108c SS |
477 | /* Takes a program previously attached to and detaches it. |
478 | The program may resume execution (some targets do, some don't) and will | |
479 | no longer stop on signals, etc. We better not have left any breakpoints | |
480 | in the program or it'll die when it hits one. ARGS is arguments | |
481 | typed by the user (e.g. a signal to send the process). FROM_TTY | |
482 | says whether to be verbose or not. */ | |
483 | ||
a14ed312 | 484 | extern void target_detach (char *, int); |
c906108c | 485 | |
6ad8ae5c DJ |
486 | /* Disconnect from the current target without resuming it (leaving it |
487 | waiting for a debugger). */ | |
488 | ||
489 | extern void target_disconnect (char *, int); | |
490 | ||
39f77062 | 491 | /* Resume execution of the target process PTID. STEP says whether to |
c906108c SS |
492 | single-step or to run free; SIGGNAL is the signal to be given to |
493 | the target, or TARGET_SIGNAL_0 for no signal. The caller may not | |
494 | pass TARGET_SIGNAL_DEFAULT. */ | |
495 | ||
39f77062 | 496 | #define target_resume(ptid, step, siggnal) \ |
4930751a C |
497 | do { \ |
498 | dcache_invalidate(target_dcache); \ | |
39f77062 | 499 | (*current_target.to_resume) (ptid, step, siggnal); \ |
4930751a | 500 | } while (0) |
c906108c | 501 | |
b5a2688f AC |
502 | /* Wait for process pid to do something. PTID = -1 to wait for any |
503 | pid to do something. Return pid of child, or -1 in case of error; | |
c906108c | 504 | store status through argument pointer STATUS. Note that it is |
b5a2688f | 505 | _NOT_ OK to throw_exception() out of target_wait() without popping |
c906108c SS |
506 | the debugging target from the stack; GDB isn't prepared to get back |
507 | to the prompt with a debugging target but without the frame cache, | |
508 | stop_pc, etc., set up. */ | |
509 | ||
39f77062 KB |
510 | #define target_wait(ptid, status) \ |
511 | (*current_target.to_wait) (ptid, status) | |
c906108c | 512 | |
17dee195 | 513 | /* Fetch at least register REGNO, or all regs if regno == -1. No result. */ |
c906108c SS |
514 | |
515 | #define target_fetch_registers(regno) \ | |
0d06e24b | 516 | (*current_target.to_fetch_registers) (regno) |
c906108c SS |
517 | |
518 | /* Store at least register REGNO, or all regs if REGNO == -1. | |
519 | It can store as many registers as it wants to, so target_prepare_to_store | |
520 | must have been previously called. Calls error() if there are problems. */ | |
521 | ||
522 | #define target_store_registers(regs) \ | |
0d06e24b | 523 | (*current_target.to_store_registers) (regs) |
c906108c SS |
524 | |
525 | /* Get ready to modify the registers array. On machines which store | |
526 | individual registers, this doesn't need to do anything. On machines | |
527 | which store all the registers in one fell swoop, this makes sure | |
528 | that REGISTERS contains all the registers from the program being | |
529 | debugged. */ | |
530 | ||
531 | #define target_prepare_to_store() \ | |
0d06e24b | 532 | (*current_target.to_prepare_to_store) () |
c906108c | 533 | |
4930751a C |
534 | extern DCACHE *target_dcache; |
535 | ||
1b0ba102 AC |
536 | extern int do_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, |
537 | int write, struct mem_attrib *attrib); | |
4930751a | 538 | |
a14ed312 | 539 | extern int target_read_string (CORE_ADDR, char **, int, int *); |
c906108c | 540 | |
fc1a4b47 | 541 | extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len); |
c906108c | 542 | |
fc1a4b47 | 543 | extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, |
10e2d419 | 544 | int len); |
c906108c | 545 | |
1b0ba102 | 546 | extern int xfer_memory (CORE_ADDR, gdb_byte *, int, int, |
29e57380 | 547 | struct mem_attrib *, struct target_ops *); |
c906108c | 548 | |
6c932e54 | 549 | extern int child_xfer_memory (CORE_ADDR, gdb_byte *, int, int, |
29e57380 | 550 | struct mem_attrib *, struct target_ops *); |
c906108c | 551 | |
917317f4 JM |
552 | /* Make a single attempt at transfering LEN bytes. On a successful |
553 | transfer, the number of bytes actually transfered is returned and | |
554 | ERR is set to 0. When a transfer fails, -1 is returned (the number | |
555 | of bytes actually transfered is not defined) and ERR is set to a | |
0d06e24b | 556 | non-zero error indication. */ |
917317f4 | 557 | |
f6519ebc MK |
558 | extern int target_read_memory_partial (CORE_ADDR addr, gdb_byte *buf, |
559 | int len, int *err); | |
917317f4 | 560 | |
f6519ebc MK |
561 | extern int target_write_memory_partial (CORE_ADDR addr, gdb_byte *buf, |
562 | int len, int *err); | |
917317f4 | 563 | |
a14ed312 | 564 | extern char *child_pid_to_exec_file (int); |
c906108c | 565 | |
a14ed312 | 566 | extern char *child_core_file_to_sym_file (char *); |
c906108c SS |
567 | |
568 | #if defined(CHILD_POST_ATTACH) | |
a14ed312 | 569 | extern void child_post_attach (int); |
c906108c SS |
570 | #endif |
571 | ||
39f77062 | 572 | extern void child_post_startup_inferior (ptid_t); |
c906108c | 573 | |
a14ed312 | 574 | extern void child_acknowledge_created_inferior (int); |
c906108c | 575 | |
fa113d1a | 576 | extern void child_insert_fork_catchpoint (int); |
c906108c | 577 | |
a14ed312 | 578 | extern int child_remove_fork_catchpoint (int); |
c906108c | 579 | |
fa113d1a | 580 | extern void child_insert_vfork_catchpoint (int); |
c906108c | 581 | |
a14ed312 | 582 | extern int child_remove_vfork_catchpoint (int); |
c906108c | 583 | |
a14ed312 | 584 | extern void child_acknowledge_created_inferior (int); |
c906108c | 585 | |
ee057212 | 586 | extern int child_follow_fork (struct target_ops *, int); |
c906108c | 587 | |
fa113d1a | 588 | extern void child_insert_exec_catchpoint (int); |
c906108c | 589 | |
a14ed312 | 590 | extern int child_remove_exec_catchpoint (int); |
c906108c | 591 | |
a14ed312 | 592 | extern int child_reported_exec_events_per_exec_call (void); |
c906108c | 593 | |
a14ed312 | 594 | extern int child_has_exited (int, int, int *); |
c906108c | 595 | |
39f77062 | 596 | extern int child_thread_alive (ptid_t); |
c906108c | 597 | |
47932f85 DJ |
598 | /* From infrun.c. */ |
599 | ||
600 | extern int inferior_has_forked (int pid, int *child_pid); | |
601 | ||
602 | extern int inferior_has_vforked (int pid, int *child_pid); | |
603 | ||
604 | extern int inferior_has_execd (int pid, char **execd_pathname); | |
605 | ||
c906108c SS |
606 | /* From exec.c */ |
607 | ||
a14ed312 | 608 | extern void print_section_info (struct target_ops *, bfd *); |
c906108c SS |
609 | |
610 | /* Print a line about the current target. */ | |
611 | ||
612 | #define target_files_info() \ | |
0d06e24b | 613 | (*current_target.to_files_info) (¤t_target) |
c906108c | 614 | |
aaab4dba AC |
615 | /* Insert a breakpoint at address ADDR in the target machine. SAVE is |
616 | a pointer to memory allocated for saving the target contents. It | |
617 | is guaranteed by the caller to be long enough to save the number of | |
618 | breakpoint bytes indicated by BREAKPOINT_FROM_PC. Result is 0 for | |
619 | success, or an errno value. */ | |
c906108c SS |
620 | |
621 | #define target_insert_breakpoint(addr, save) \ | |
0d06e24b | 622 | (*current_target.to_insert_breakpoint) (addr, save) |
c906108c SS |
623 | |
624 | /* Remove a breakpoint at address ADDR in the target machine. | |
2146d243 RM |
625 | SAVE is a pointer to the same save area |
626 | that was previously passed to target_insert_breakpoint. | |
c906108c SS |
627 | Result is 0 for success, or an errno value. */ |
628 | ||
629 | #define target_remove_breakpoint(addr, save) \ | |
0d06e24b | 630 | (*current_target.to_remove_breakpoint) (addr, save) |
c906108c SS |
631 | |
632 | /* Initialize the terminal settings we record for the inferior, | |
633 | before we actually run the inferior. */ | |
634 | ||
635 | #define target_terminal_init() \ | |
0d06e24b | 636 | (*current_target.to_terminal_init) () |
c906108c SS |
637 | |
638 | /* Put the inferior's terminal settings into effect. | |
639 | This is preparation for starting or resuming the inferior. */ | |
640 | ||
641 | #define target_terminal_inferior() \ | |
0d06e24b | 642 | (*current_target.to_terminal_inferior) () |
c906108c SS |
643 | |
644 | /* Put some of our terminal settings into effect, | |
645 | enough to get proper results from our output, | |
646 | but do not change into or out of RAW mode | |
647 | so that no input is discarded. | |
648 | ||
649 | After doing this, either terminal_ours or terminal_inferior | |
650 | should be called to get back to a normal state of affairs. */ | |
651 | ||
652 | #define target_terminal_ours_for_output() \ | |
0d06e24b | 653 | (*current_target.to_terminal_ours_for_output) () |
c906108c SS |
654 | |
655 | /* Put our terminal settings into effect. | |
656 | First record the inferior's terminal settings | |
657 | so they can be restored properly later. */ | |
658 | ||
659 | #define target_terminal_ours() \ | |
0d06e24b | 660 | (*current_target.to_terminal_ours) () |
c906108c | 661 | |
a790ad35 SC |
662 | /* Save our terminal settings. |
663 | This is called from TUI after entering or leaving the curses | |
664 | mode. Since curses modifies our terminal this call is here | |
665 | to take this change into account. */ | |
666 | ||
667 | #define target_terminal_save_ours() \ | |
668 | (*current_target.to_terminal_save_ours) () | |
669 | ||
c906108c SS |
670 | /* Print useful information about our terminal status, if such a thing |
671 | exists. */ | |
672 | ||
673 | #define target_terminal_info(arg, from_tty) \ | |
0d06e24b | 674 | (*current_target.to_terminal_info) (arg, from_tty) |
c906108c SS |
675 | |
676 | /* Kill the inferior process. Make it go away. */ | |
677 | ||
678 | #define target_kill() \ | |
0d06e24b | 679 | (*current_target.to_kill) () |
c906108c | 680 | |
0d06e24b JM |
681 | /* Load an executable file into the target process. This is expected |
682 | to not only bring new code into the target process, but also to | |
1986bccd AS |
683 | update GDB's symbol tables to match. |
684 | ||
685 | ARG contains command-line arguments, to be broken down with | |
686 | buildargv (). The first non-switch argument is the filename to | |
687 | load, FILE; the second is a number (as parsed by strtoul (..., ..., | |
688 | 0)), which is an offset to apply to the load addresses of FILE's | |
689 | sections. The target may define switches, or other non-switch | |
690 | arguments, as it pleases. */ | |
c906108c | 691 | |
11cf8741 | 692 | extern void target_load (char *arg, int from_tty); |
c906108c SS |
693 | |
694 | /* Look up a symbol in the target's symbol table. NAME is the symbol | |
0d06e24b JM |
695 | name. ADDRP is a CORE_ADDR * pointing to where the value of the |
696 | symbol should be returned. The result is 0 if successful, nonzero | |
697 | if the symbol does not exist in the target environment. This | |
698 | function should not call error() if communication with the target | |
699 | is interrupted, since it is called from symbol reading, but should | |
700 | return nonzero, possibly doing a complain(). */ | |
c906108c | 701 | |
0d06e24b JM |
702 | #define target_lookup_symbol(name, addrp) \ |
703 | (*current_target.to_lookup_symbol) (name, addrp) | |
c906108c | 704 | |
39f77062 | 705 | /* Start an inferior process and set inferior_ptid to its pid. |
c906108c SS |
706 | EXEC_FILE is the file to run. |
707 | ALLARGS is a string containing the arguments to the program. | |
708 | ENV is the environment vector to pass. Errors reported with error(). | |
709 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
c5aa993b | 710 | |
c27cda74 AC |
711 | #define target_create_inferior(exec_file, args, env, FROM_TTY) \ |
712 | (*current_target.to_create_inferior) (exec_file, args, env, (FROM_TTY)) | |
c906108c SS |
713 | |
714 | ||
715 | /* Some targets (such as ttrace-based HPUX) don't allow us to request | |
716 | notification of inferior events such as fork and vork immediately | |
717 | after the inferior is created. (This because of how gdb gets an | |
718 | inferior created via invoking a shell to do it. In such a scenario, | |
719 | if the shell init file has commands in it, the shell will fork and | |
720 | exec for each of those commands, and we will see each such fork | |
721 | event. Very bad.) | |
c5aa993b | 722 | |
0d06e24b JM |
723 | Such targets will supply an appropriate definition for this function. */ |
724 | ||
39f77062 KB |
725 | #define target_post_startup_inferior(ptid) \ |
726 | (*current_target.to_post_startup_inferior) (ptid) | |
c906108c SS |
727 | |
728 | /* On some targets, the sequence of starting up an inferior requires | |
0d06e24b JM |
729 | some synchronization between gdb and the new inferior process, PID. */ |
730 | ||
c906108c | 731 | #define target_acknowledge_created_inferior(pid) \ |
0d06e24b | 732 | (*current_target.to_acknowledge_created_inferior) (pid) |
c906108c | 733 | |
0d06e24b JM |
734 | /* On some targets, we can catch an inferior fork or vfork event when |
735 | it occurs. These functions insert/remove an already-created | |
736 | catchpoint for such events. */ | |
c906108c | 737 | |
c906108c | 738 | #define target_insert_fork_catchpoint(pid) \ |
0d06e24b | 739 | (*current_target.to_insert_fork_catchpoint) (pid) |
c906108c SS |
740 | |
741 | #define target_remove_fork_catchpoint(pid) \ | |
0d06e24b | 742 | (*current_target.to_remove_fork_catchpoint) (pid) |
c906108c SS |
743 | |
744 | #define target_insert_vfork_catchpoint(pid) \ | |
0d06e24b | 745 | (*current_target.to_insert_vfork_catchpoint) (pid) |
c906108c SS |
746 | |
747 | #define target_remove_vfork_catchpoint(pid) \ | |
0d06e24b | 748 | (*current_target.to_remove_vfork_catchpoint) (pid) |
c906108c | 749 | |
6604731b DJ |
750 | /* If the inferior forks or vforks, this function will be called at |
751 | the next resume in order to perform any bookkeeping and fiddling | |
752 | necessary to continue debugging either the parent or child, as | |
753 | requested, and releasing the other. Information about the fork | |
754 | or vfork event is available via get_last_target_status (). | |
755 | This function returns 1 if the inferior should not be resumed | |
756 | (i.e. there is another event pending). */ | |
0d06e24b | 757 | |
ee057212 | 758 | int target_follow_fork (int follow_child); |
c906108c SS |
759 | |
760 | /* On some targets, we can catch an inferior exec event when it | |
0d06e24b JM |
761 | occurs. These functions insert/remove an already-created |
762 | catchpoint for such events. */ | |
763 | ||
c906108c | 764 | #define target_insert_exec_catchpoint(pid) \ |
0d06e24b | 765 | (*current_target.to_insert_exec_catchpoint) (pid) |
c5aa993b | 766 | |
c906108c | 767 | #define target_remove_exec_catchpoint(pid) \ |
0d06e24b | 768 | (*current_target.to_remove_exec_catchpoint) (pid) |
c906108c | 769 | |
c906108c SS |
770 | /* Returns the number of exec events that are reported when a process |
771 | invokes a flavor of the exec() system call on this target, if exec | |
0d06e24b JM |
772 | events are being reported. */ |
773 | ||
c906108c | 774 | #define target_reported_exec_events_per_exec_call() \ |
0d06e24b | 775 | (*current_target.to_reported_exec_events_per_exec_call) () |
c906108c | 776 | |
c906108c | 777 | /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the |
0d06e24b JM |
778 | exit code of PID, if any. */ |
779 | ||
c906108c | 780 | #define target_has_exited(pid,wait_status,exit_status) \ |
0d06e24b | 781 | (*current_target.to_has_exited) (pid,wait_status,exit_status) |
c906108c SS |
782 | |
783 | /* The debugger has completed a blocking wait() call. There is now | |
2146d243 | 784 | some process event that must be processed. This function should |
c906108c | 785 | be defined by those targets that require the debugger to perform |
0d06e24b | 786 | cleanup or internal state changes in response to the process event. */ |
c906108c SS |
787 | |
788 | /* The inferior process has died. Do what is right. */ | |
789 | ||
790 | #define target_mourn_inferior() \ | |
0d06e24b | 791 | (*current_target.to_mourn_inferior) () |
c906108c SS |
792 | |
793 | /* Does target have enough data to do a run or attach command? */ | |
794 | ||
795 | #define target_can_run(t) \ | |
0d06e24b | 796 | ((t)->to_can_run) () |
c906108c SS |
797 | |
798 | /* post process changes to signal handling in the inferior. */ | |
799 | ||
39f77062 KB |
800 | #define target_notice_signals(ptid) \ |
801 | (*current_target.to_notice_signals) (ptid) | |
c906108c SS |
802 | |
803 | /* Check to see if a thread is still alive. */ | |
804 | ||
39f77062 KB |
805 | #define target_thread_alive(ptid) \ |
806 | (*current_target.to_thread_alive) (ptid) | |
c906108c | 807 | |
b83266a0 SS |
808 | /* Query for new threads and add them to the thread list. */ |
809 | ||
810 | #define target_find_new_threads() \ | |
0d06e24b | 811 | (*current_target.to_find_new_threads) (); \ |
b83266a0 | 812 | |
0d06e24b JM |
813 | /* Make target stop in a continuable fashion. (For instance, under |
814 | Unix, this should act like SIGSTOP). This function is normally | |
815 | used by GUIs to implement a stop button. */ | |
c906108c SS |
816 | |
817 | #define target_stop current_target.to_stop | |
818 | ||
96baa820 JM |
819 | /* Send the specified COMMAND to the target's monitor |
820 | (shell,interpreter) for execution. The result of the query is | |
0d06e24b | 821 | placed in OUTBUF. */ |
96baa820 JM |
822 | |
823 | #define target_rcmd(command, outbuf) \ | |
824 | (*current_target.to_rcmd) (command, outbuf) | |
825 | ||
826 | ||
c906108c | 827 | /* Get the symbol information for a breakpointable routine called when |
2146d243 | 828 | an exception event occurs. |
c906108c SS |
829 | Intended mainly for C++, and for those |
830 | platforms/implementations where such a callback mechanism is available, | |
831 | e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support | |
0d06e24b | 832 | different mechanisms for debugging exceptions. */ |
c906108c SS |
833 | |
834 | #define target_enable_exception_callback(kind, enable) \ | |
0d06e24b | 835 | (*current_target.to_enable_exception_callback) (kind, enable) |
c906108c | 836 | |
0d06e24b | 837 | /* Get the current exception event kind -- throw or catch, etc. */ |
c5aa993b | 838 | |
c906108c | 839 | #define target_get_current_exception_event() \ |
0d06e24b | 840 | (*current_target.to_get_current_exception_event) () |
c906108c | 841 | |
c906108c SS |
842 | /* Does the target include all of memory, or only part of it? This |
843 | determines whether we look up the target chain for other parts of | |
844 | memory if this target can't satisfy a request. */ | |
845 | ||
846 | #define target_has_all_memory \ | |
0d06e24b | 847 | (current_target.to_has_all_memory) |
c906108c SS |
848 | |
849 | /* Does the target include memory? (Dummy targets don't.) */ | |
850 | ||
851 | #define target_has_memory \ | |
0d06e24b | 852 | (current_target.to_has_memory) |
c906108c SS |
853 | |
854 | /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until | |
855 | we start a process.) */ | |
c5aa993b | 856 | |
c906108c | 857 | #define target_has_stack \ |
0d06e24b | 858 | (current_target.to_has_stack) |
c906108c SS |
859 | |
860 | /* Does the target have registers? (Exec files don't.) */ | |
861 | ||
862 | #define target_has_registers \ | |
0d06e24b | 863 | (current_target.to_has_registers) |
c906108c SS |
864 | |
865 | /* Does the target have execution? Can we make it jump (through | |
866 | hoops), or pop its stack a few times? FIXME: If this is to work that | |
867 | way, it needs to check whether an inferior actually exists. | |
868 | remote-udi.c and probably other targets can be the current target | |
869 | when the inferior doesn't actually exist at the moment. Right now | |
870 | this just tells us whether this target is *capable* of execution. */ | |
871 | ||
872 | #define target_has_execution \ | |
0d06e24b | 873 | (current_target.to_has_execution) |
c906108c SS |
874 | |
875 | /* Can the target support the debugger control of thread execution? | |
876 | a) Can it lock the thread scheduler? | |
877 | b) Can it switch the currently running thread? */ | |
878 | ||
879 | #define target_can_lock_scheduler \ | |
0d06e24b | 880 | (current_target.to_has_thread_control & tc_schedlock) |
c906108c SS |
881 | |
882 | #define target_can_switch_threads \ | |
0d06e24b | 883 | (current_target.to_has_thread_control & tc_switch) |
c906108c | 884 | |
6426a772 JM |
885 | /* Can the target support asynchronous execution? */ |
886 | #define target_can_async_p() (current_target.to_can_async_p ()) | |
887 | ||
888 | /* Is the target in asynchronous execution mode? */ | |
889 | #define target_is_async_p() (current_target.to_is_async_p()) | |
890 | ||
891 | /* Put the target in async mode with the specified callback function. */ | |
0d06e24b JM |
892 | #define target_async(CALLBACK,CONTEXT) \ |
893 | (current_target.to_async((CALLBACK), (CONTEXT))) | |
43ff13b4 | 894 | |
04714b91 AC |
895 | /* This is to be used ONLY within call_function_by_hand(). It provides |
896 | a workaround, to have inferior function calls done in sychronous | |
897 | mode, even though the target is asynchronous. After | |
ed9a39eb JM |
898 | target_async_mask(0) is called, calls to target_can_async_p() will |
899 | return FALSE , so that target_resume() will not try to start the | |
900 | target asynchronously. After the inferior stops, we IMMEDIATELY | |
901 | restore the previous nature of the target, by calling | |
902 | target_async_mask(1). After that, target_can_async_p() will return | |
04714b91 | 903 | TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED. |
ed9a39eb JM |
904 | |
905 | FIXME ezannoni 1999-12-13: we won't need this once we move | |
906 | the turning async on and off to the single execution commands, | |
0d06e24b | 907 | from where it is done currently, in remote_resume(). */ |
ed9a39eb JM |
908 | |
909 | #define target_async_mask_value \ | |
0d06e24b | 910 | (current_target.to_async_mask_value) |
ed9a39eb | 911 | |
2146d243 | 912 | extern int target_async_mask (int mask); |
ed9a39eb | 913 | |
c906108c SS |
914 | /* Converts a process id to a string. Usually, the string just contains |
915 | `process xyz', but on some systems it may contain | |
916 | `process xyz thread abc'. */ | |
917 | ||
ed9a39eb JM |
918 | #undef target_pid_to_str |
919 | #define target_pid_to_str(PID) current_target.to_pid_to_str (PID) | |
c906108c SS |
920 | |
921 | #ifndef target_tid_to_str | |
922 | #define target_tid_to_str(PID) \ | |
0d06e24b | 923 | target_pid_to_str (PID) |
39f77062 | 924 | extern char *normal_pid_to_str (ptid_t ptid); |
c906108c | 925 | #endif |
c5aa993b | 926 | |
0d06e24b JM |
927 | /* Return a short string describing extra information about PID, |
928 | e.g. "sleeping", "runnable", "running on LWP 3". Null return value | |
929 | is okay. */ | |
930 | ||
931 | #define target_extra_thread_info(TP) \ | |
932 | (current_target.to_extra_thread_info (TP)) | |
ed9a39eb | 933 | |
11cf8741 JM |
934 | /* |
935 | * New Objfile Event Hook: | |
936 | * | |
937 | * Sometimes a GDB component wants to get notified whenever a new | |
2146d243 | 938 | * objfile is loaded. Mainly this is used by thread-debugging |
11cf8741 JM |
939 | * implementations that need to know when symbols for the target |
940 | * thread implemenation are available. | |
941 | * | |
942 | * The old way of doing this is to define a macro 'target_new_objfile' | |
943 | * that points to the function that you want to be called on every | |
944 | * objfile/shlib load. | |
9a4105ab AC |
945 | |
946 | The new way is to grab the function pointer, | |
947 | 'deprecated_target_new_objfile_hook', and point it to the function | |
948 | that you want to be called on every objfile/shlib load. | |
949 | ||
950 | If multiple clients are willing to be cooperative, they can each | |
951 | save a pointer to the previous value of | |
952 | deprecated_target_new_objfile_hook before modifying it, and arrange | |
953 | for their function to call the previous function in the chain. In | |
954 | that way, multiple clients can receive this notification (something | |
955 | like with signal handlers). */ | |
956 | ||
957 | extern void (*deprecated_target_new_objfile_hook) (struct objfile *); | |
c906108c SS |
958 | |
959 | #ifndef target_pid_or_tid_to_str | |
960 | #define target_pid_or_tid_to_str(ID) \ | |
0d06e24b | 961 | target_pid_to_str (ID) |
c906108c SS |
962 | #endif |
963 | ||
964 | /* Attempts to find the pathname of the executable file | |
965 | that was run to create a specified process. | |
966 | ||
967 | The process PID must be stopped when this operation is used. | |
c5aa993b | 968 | |
c906108c SS |
969 | If the executable file cannot be determined, NULL is returned. |
970 | ||
971 | Else, a pointer to a character string containing the pathname | |
972 | is returned. This string should be copied into a buffer by | |
973 | the client if the string will not be immediately used, or if | |
0d06e24b | 974 | it must persist. */ |
c906108c SS |
975 | |
976 | #define target_pid_to_exec_file(pid) \ | |
0d06e24b | 977 | (current_target.to_pid_to_exec_file) (pid) |
c906108c | 978 | |
be4d1333 MS |
979 | /* |
980 | * Iterator function for target memory regions. | |
981 | * Calls a callback function once for each memory region 'mapped' | |
982 | * in the child process. Defined as a simple macro rather than | |
2146d243 | 983 | * as a function macro so that it can be tested for nullity. |
be4d1333 MS |
984 | */ |
985 | ||
986 | #define target_find_memory_regions(FUNC, DATA) \ | |
987 | (current_target.to_find_memory_regions) (FUNC, DATA) | |
988 | ||
989 | /* | |
990 | * Compose corefile .note section. | |
991 | */ | |
992 | ||
993 | #define target_make_corefile_notes(BFD, SIZE_P) \ | |
994 | (current_target.to_make_corefile_notes) (BFD, SIZE_P) | |
995 | ||
3f47be5c EZ |
996 | /* Thread-local values. */ |
997 | #define target_get_thread_local_address \ | |
998 | (current_target.to_get_thread_local_address) | |
999 | #define target_get_thread_local_address_p() \ | |
1000 | (target_get_thread_local_address != NULL) | |
1001 | ||
9d8a64cb | 1002 | /* Hook to call target dependent code just after inferior target process has |
c906108c SS |
1003 | started. */ |
1004 | ||
1005 | #ifndef TARGET_CREATE_INFERIOR_HOOK | |
1006 | #define TARGET_CREATE_INFERIOR_HOOK(PID) | |
1007 | #endif | |
1008 | ||
1009 | /* Hardware watchpoint interfaces. */ | |
1010 | ||
1011 | /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or | |
1012 | write). */ | |
1013 | ||
1014 | #ifndef STOPPED_BY_WATCHPOINT | |
ccaa32c7 GS |
1015 | #define STOPPED_BY_WATCHPOINT(w) \ |
1016 | (*current_target.to_stopped_by_watchpoint) () | |
c906108c | 1017 | #endif |
7df1a324 KW |
1018 | |
1019 | /* Non-zero if we have continuable watchpoints */ | |
1020 | ||
1021 | #ifndef HAVE_CONTINUABLE_WATCHPOINT | |
1022 | #define HAVE_CONTINUABLE_WATCHPOINT \ | |
1023 | (current_target.to_have_continuable_watchpoint) | |
1024 | #endif | |
c906108c | 1025 | |
ccaa32c7 | 1026 | /* Provide defaults for hardware watchpoint functions. */ |
c906108c | 1027 | |
2146d243 | 1028 | /* If the *_hw_beakpoint functions have not been defined |
ccaa32c7 | 1029 | elsewhere use the definitions in the target vector. */ |
c906108c SS |
1030 | |
1031 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
1032 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
1033 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
1034 | (including this one?). OTHERTYPE is who knows what... */ | |
1035 | ||
ccaa32c7 GS |
1036 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
1037 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ | |
1038 | (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); | |
1039 | #endif | |
c906108c | 1040 | |
e0d24f8d WZ |
1041 | #ifndef TARGET_REGION_OK_FOR_HW_WATCHPOINT |
1042 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr, len) \ | |
1043 | (*current_target.to_region_ok_for_hw_watchpoint) (addr, len) | |
1044 | #endif | |
1045 | ||
c906108c SS |
1046 | |
1047 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0 | |
1048 | for write, 1 for read, and 2 for read/write accesses. Returns 0 for | |
1049 | success, non-zero for failure. */ | |
1050 | ||
ccaa32c7 GS |
1051 | #ifndef target_insert_watchpoint |
1052 | #define target_insert_watchpoint(addr, len, type) \ | |
1053 | (*current_target.to_insert_watchpoint) (addr, len, type) | |
c906108c | 1054 | |
ccaa32c7 GS |
1055 | #define target_remove_watchpoint(addr, len, type) \ |
1056 | (*current_target.to_remove_watchpoint) (addr, len, type) | |
1057 | #endif | |
c906108c SS |
1058 | |
1059 | #ifndef target_insert_hw_breakpoint | |
ccaa32c7 GS |
1060 | #define target_insert_hw_breakpoint(addr, save) \ |
1061 | (*current_target.to_insert_hw_breakpoint) (addr, save) | |
1062 | ||
1063 | #define target_remove_hw_breakpoint(addr, save) \ | |
1064 | (*current_target.to_remove_hw_breakpoint) (addr, save) | |
c906108c SS |
1065 | #endif |
1066 | ||
4aa7a7f5 JJ |
1067 | extern int target_stopped_data_address_p (struct target_ops *); |
1068 | ||
c906108c | 1069 | #ifndef target_stopped_data_address |
4aa7a7f5 JJ |
1070 | #define target_stopped_data_address(target, x) \ |
1071 | (*target.to_stopped_data_address) (target, x) | |
1072 | #else | |
1073 | /* Horrible hack to get around existing macros :-(. */ | |
1074 | #define target_stopped_data_address_p(CURRENT_TARGET) (1) | |
c906108c SS |
1075 | #endif |
1076 | ||
c906108c SS |
1077 | /* This will only be defined by a target that supports catching vfork events, |
1078 | such as HP-UX. | |
1079 | ||
1080 | On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked | |
1081 | child process after it has exec'd, causes the parent process to resume as | |
1082 | well. To prevent the parent from running spontaneously, such targets should | |
0d06e24b | 1083 | define this to a function that prevents that from happening. */ |
c906108c SS |
1084 | #if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED) |
1085 | #define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0) | |
1086 | #endif | |
1087 | ||
1088 | /* This will only be defined by a target that supports catching vfork events, | |
1089 | such as HP-UX. | |
1090 | ||
1091 | On some targets (such as HP-UX 10.20 and earlier), a newly vforked child | |
1092 | process must be resumed when it delivers its exec event, before the parent | |
0d06e24b JM |
1093 | vfork event will be delivered to us. */ |
1094 | ||
c906108c SS |
1095 | #if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK) |
1096 | #define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0) | |
1097 | #endif | |
1098 | ||
1099 | /* Routines for maintenance of the target structures... | |
1100 | ||
1101 | add_target: Add a target to the list of all possible targets. | |
1102 | ||
1103 | push_target: Make this target the top of the stack of currently used | |
c5aa993b JM |
1104 | targets, within its particular stratum of the stack. Result |
1105 | is 0 if now atop the stack, nonzero if not on top (maybe | |
1106 | should warn user). | |
c906108c SS |
1107 | |
1108 | unpush_target: Remove this from the stack of currently used targets, | |
c5aa993b JM |
1109 | no matter where it is on the list. Returns 0 if no |
1110 | change, 1 if removed from stack. | |
c906108c | 1111 | |
c5aa993b | 1112 | pop_target: Remove the top thing on the stack of current targets. */ |
c906108c | 1113 | |
a14ed312 | 1114 | extern void add_target (struct target_ops *); |
c906108c | 1115 | |
a14ed312 | 1116 | extern int push_target (struct target_ops *); |
c906108c | 1117 | |
a14ed312 | 1118 | extern int unpush_target (struct target_ops *); |
c906108c | 1119 | |
a14ed312 | 1120 | extern void target_preopen (int); |
c906108c | 1121 | |
a14ed312 | 1122 | extern void pop_target (void); |
c906108c SS |
1123 | |
1124 | /* Struct section_table maps address ranges to file sections. It is | |
1125 | mostly used with BFD files, but can be used without (e.g. for handling | |
1126 | raw disks, or files not in formats handled by BFD). */ | |
1127 | ||
c5aa993b JM |
1128 | struct section_table |
1129 | { | |
1130 | CORE_ADDR addr; /* Lowest address in section */ | |
1131 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 1132 | |
7be0c536 | 1133 | struct bfd_section *the_bfd_section; |
c906108c | 1134 | |
c5aa993b JM |
1135 | bfd *bfd; /* BFD file pointer */ |
1136 | }; | |
c906108c | 1137 | |
8db32d44 AC |
1138 | /* Return the "section" containing the specified address. */ |
1139 | struct section_table *target_section_by_addr (struct target_ops *target, | |
1140 | CORE_ADDR addr); | |
1141 | ||
1142 | ||
c906108c SS |
1143 | /* From mem-break.c */ |
1144 | ||
fc1a4b47 | 1145 | extern int memory_remove_breakpoint (CORE_ADDR, gdb_byte *); |
c906108c | 1146 | |
fc1a4b47 | 1147 | extern int memory_insert_breakpoint (CORE_ADDR, gdb_byte *); |
c906108c | 1148 | |
fc1a4b47 | 1149 | extern int default_memory_remove_breakpoint (CORE_ADDR, gdb_byte *); |
917317f4 | 1150 | |
fc1a4b47 | 1151 | extern int default_memory_insert_breakpoint (CORE_ADDR, gdb_byte *); |
917317f4 | 1152 | |
c906108c SS |
1153 | |
1154 | /* From target.c */ | |
1155 | ||
a14ed312 | 1156 | extern void initialize_targets (void); |
c906108c | 1157 | |
a14ed312 | 1158 | extern void noprocess (void); |
c906108c | 1159 | |
a14ed312 | 1160 | extern void find_default_attach (char *, int); |
c906108c | 1161 | |
c27cda74 | 1162 | extern void find_default_create_inferior (char *, char *, char **, int); |
c906108c | 1163 | |
a14ed312 | 1164 | extern struct target_ops *find_run_target (void); |
7a292a7a | 1165 | |
a14ed312 | 1166 | extern struct target_ops *find_core_target (void); |
6426a772 | 1167 | |
a14ed312 | 1168 | extern struct target_ops *find_target_beneath (struct target_ops *); |
ed9a39eb | 1169 | |
570b8f7c AC |
1170 | extern int target_resize_to_sections (struct target_ops *target, |
1171 | int num_added); | |
07cd4b97 JB |
1172 | |
1173 | extern void remove_target_sections (bfd *abfd); | |
1174 | ||
c906108c SS |
1175 | \f |
1176 | /* Stuff that should be shared among the various remote targets. */ | |
1177 | ||
1178 | /* Debugging level. 0 is off, and non-zero values mean to print some debug | |
1179 | information (higher values, more information). */ | |
1180 | extern int remote_debug; | |
1181 | ||
1182 | /* Speed in bits per second, or -1 which means don't mess with the speed. */ | |
1183 | extern int baud_rate; | |
1184 | /* Timeout limit for response from target. */ | |
1185 | extern int remote_timeout; | |
1186 | ||
c906108c SS |
1187 | \f |
1188 | /* Functions for helping to write a native target. */ | |
1189 | ||
1190 | /* This is for native targets which use a unix/POSIX-style waitstatus. */ | |
a14ed312 | 1191 | extern void store_waitstatus (struct target_waitstatus *, int); |
c906108c | 1192 | |
c2d11a7d | 1193 | /* Predicate to target_signal_to_host(). Return non-zero if the enum |
0d06e24b | 1194 | targ_signal SIGNO has an equivalent ``host'' representation. */ |
c2d11a7d JM |
1195 | /* FIXME: cagney/1999-11-22: The name below was chosen in preference |
1196 | to the shorter target_signal_p() because it is far less ambigious. | |
1197 | In this context ``target_signal'' refers to GDB's internal | |
1198 | representation of the target's set of signals while ``host signal'' | |
0d06e24b JM |
1199 | refers to the target operating system's signal. Confused? */ |
1200 | ||
c2d11a7d JM |
1201 | extern int target_signal_to_host_p (enum target_signal signo); |
1202 | ||
1203 | /* Convert between host signal numbers and enum target_signal's. | |
1204 | target_signal_to_host() returns 0 and prints a warning() on GDB's | |
0d06e24b | 1205 | console if SIGNO has no equivalent host representation. */ |
c2d11a7d JM |
1206 | /* FIXME: cagney/1999-11-22: Here ``host'' is used incorrectly, it is |
1207 | refering to the target operating system's signal numbering. | |
1208 | Similarly, ``enum target_signal'' is named incorrectly, ``enum | |
1209 | gdb_signal'' would probably be better as it is refering to GDB's | |
0d06e24b JM |
1210 | internal representation of a target operating system's signal. */ |
1211 | ||
a14ed312 KB |
1212 | extern enum target_signal target_signal_from_host (int); |
1213 | extern int target_signal_to_host (enum target_signal); | |
c906108c SS |
1214 | |
1215 | /* Convert from a number used in a GDB command to an enum target_signal. */ | |
a14ed312 | 1216 | extern enum target_signal target_signal_from_command (int); |
c906108c SS |
1217 | |
1218 | /* Any target can call this to switch to remote protocol (in remote.c). */ | |
a14ed312 | 1219 | extern void push_remote_target (char *name, int from_tty); |
c906108c SS |
1220 | \f |
1221 | /* Imported from machine dependent code */ | |
1222 | ||
c906108c | 1223 | /* Blank target vector entries are initialized to target_ignore. */ |
a14ed312 | 1224 | void target_ignore (void); |
c906108c | 1225 | |
1df84f13 | 1226 | extern struct target_ops deprecated_child_ops; |
5ac10fd1 | 1227 | |
c5aa993b | 1228 | #endif /* !defined (TARGET_H) */ |