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f6bcefef | 1 | /* CRIS exception, interrupt, and trap (EIT) support |
9b254dd1 | 2 | Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc. |
f6bcefef HPN |
3 | Contributed by Axis Communications. |
4 | ||
5 | This file is part of the GNU simulators. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
f6bcefef HPN |
11 | |
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
4744ac1b JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
f6bcefef HPN |
19 | |
20 | #include "sim-main.h" | |
21 | #include "sim-options.h" | |
f6bcefef | 22 | #include "bfd.h" |
ed1f044a HPN |
23 | /* FIXME: get rid of targ-vals.h usage everywhere else. */ |
24 | ||
466b1d33 | 25 | #include <stdarg.h> |
f6bcefef HPN |
26 | #ifdef HAVE_ERRNO_H |
27 | #include <errno.h> | |
28 | #endif | |
29 | #ifdef HAVE_UNISTD_H | |
30 | #include <unistd.h> | |
31 | #endif | |
32 | #ifdef HAVE_FCNTL_H | |
33 | #include <fcntl.h> | |
34 | #endif | |
35 | #ifdef HAVE_SYS_PARAM_H | |
36 | #include <sys/param.h> | |
37 | #endif | |
38 | #ifdef HAVE_SYS_STAT_H | |
39 | #include <sys/stat.h> | |
40 | #endif | |
3ca4d560 HPN |
41 | /* For PATH_MAX, originally. */ |
42 | #ifdef HAVE_LIMITS_H | |
43 | #include <limits.h> | |
44 | #endif | |
45 | ||
46 | /* From ld/sysdep.h. */ | |
47 | #ifdef PATH_MAX | |
48 | # define SIM_PATHMAX PATH_MAX | |
49 | #else | |
50 | # ifdef MAXPATHLEN | |
51 | # define SIM_PATHMAX MAXPATHLEN | |
52 | # else | |
53 | # define SIM_PATHMAX 1024 | |
54 | # endif | |
55 | #endif | |
f6bcefef HPN |
56 | |
57 | /* The verbatim values are from asm-cris/unistd.h. */ | |
58 | ||
59 | #define TARGET_SYS_exit 1 | |
60 | #define TARGET_SYS_read 3 | |
61 | #define TARGET_SYS_write 4 | |
62 | #define TARGET_SYS_open 5 | |
63 | #define TARGET_SYS_close 6 | |
64 | #define TARGET_SYS_unlink 10 | |
65 | #define TARGET_SYS_time 13 | |
66 | #define TARGET_SYS_lseek 19 | |
67 | #define TARGET_SYS_getpid 20 | |
68 | #define TARGET_SYS_kill 37 | |
69 | #define TARGET_SYS_rename 38 | |
70 | #define TARGET_SYS_pipe 42 | |
71 | #define TARGET_SYS_brk 45 | |
72 | #define TARGET_SYS_ioctl 54 | |
73 | #define TARGET_SYS_fcntl 55 | |
74 | #define TARGET_SYS_getppid 64 | |
75 | #define TARGET_SYS_setrlimit 75 | |
76 | #define TARGET_SYS_gettimeofday 78 | |
77 | #define TARGET_SYS_readlink 85 | |
78 | #define TARGET_SYS_munmap 91 | |
79 | #define TARGET_SYS_truncate 92 | |
80 | #define TARGET_SYS_ftruncate 93 | |
81 | #define TARGET_SYS_socketcall 102 | |
5457266c | 82 | #define TARGET_SYS_stat 106 |
f6bcefef HPN |
83 | #define TARGET_SYS_fstat 108 |
84 | #define TARGET_SYS_wait4 114 | |
85 | #define TARGET_SYS_sigreturn 119 | |
86 | #define TARGET_SYS_clone 120 | |
87 | #define TARGET_SYS_uname 122 | |
88 | #define TARGET_SYS_mprotect 125 | |
89 | #define TARGET_SYS_llseek 140 | |
c06ccdf1 | 90 | #define TARGET_SYS_writev 146 |
f6bcefef HPN |
91 | #define TARGET_SYS__sysctl 149 |
92 | #define TARGET_SYS_sched_setparam 154 | |
93 | #define TARGET_SYS_sched_getparam 155 | |
94 | #define TARGET_SYS_sched_setscheduler 156 | |
95 | #define TARGET_SYS_sched_getscheduler 157 | |
96 | #define TARGET_SYS_sched_yield 158 | |
97 | #define TARGET_SYS_sched_get_priority_max 159 | |
98 | #define TARGET_SYS_sched_get_priority_min 160 | |
99 | #define TARGET_SYS_mremap 163 | |
100 | #define TARGET_SYS_poll 168 | |
101 | #define TARGET_SYS_rt_sigaction 174 | |
102 | #define TARGET_SYS_rt_sigprocmask 175 | |
103 | #define TARGET_SYS_rt_sigsuspend 179 | |
104 | #define TARGET_SYS_getcwd 183 | |
105 | #define TARGET_SYS_ugetrlimit 191 | |
106 | #define TARGET_SYS_mmap2 192 | |
107 | #define TARGET_SYS_stat64 195 | |
108 | #define TARGET_SYS_lstat64 196 | |
109 | #define TARGET_SYS_fstat64 197 | |
110 | #define TARGET_SYS_geteuid32 201 | |
111 | #define TARGET_SYS_getuid32 199 | |
112 | #define TARGET_SYS_getegid32 202 | |
113 | #define TARGET_SYS_getgid32 200 | |
114 | #define TARGET_SYS_fcntl64 221 | |
115 | ||
116 | #define TARGET_PROT_READ 0x1 | |
117 | #define TARGET_PROT_WRITE 0x2 | |
118 | #define TARGET_PROT_EXEC 0x4 | |
119 | #define TARGET_PROT_NONE 0x0 | |
120 | ||
121 | #define TARGET_MAP_SHARED 0x01 | |
122 | #define TARGET_MAP_PRIVATE 0x02 | |
123 | #define TARGET_MAP_TYPE 0x0f | |
124 | #define TARGET_MAP_FIXED 0x10 | |
125 | #define TARGET_MAP_ANONYMOUS 0x20 | |
126 | ||
127 | #define TARGET_CTL_KERN 1 | |
128 | #define TARGET_CTL_VM 2 | |
129 | #define TARGET_CTL_NET 3 | |
130 | #define TARGET_CTL_PROC 4 | |
131 | #define TARGET_CTL_FS 5 | |
132 | #define TARGET_CTL_DEBUG 6 | |
133 | #define TARGET_CTL_DEV 7 | |
134 | #define TARGET_CTL_BUS 8 | |
135 | #define TARGET_CTL_ABI 9 | |
136 | ||
137 | #define TARGET_CTL_KERN_VERSION 4 | |
138 | ||
139 | /* linux/mman.h */ | |
140 | #define TARGET_MREMAP_MAYMOVE 1 | |
141 | #define TARGET_MREMAP_FIXED 2 | |
142 | ||
143 | #define TARGET_TCGETS 0x5401 | |
144 | ||
145 | #define TARGET_UTSNAME "#38 Sun Apr 1 00:00:00 MET 2001" | |
146 | ||
147 | /* Seconds since the above date + 10 minutes. */ | |
148 | #define TARGET_EPOCH 986080200 | |
149 | ||
150 | /* Milliseconds since start of run. We use the number of syscalls to | |
151 | avoid introducing noise in the execution time. */ | |
152 | #define TARGET_TIME_MS(cpu) ((cpu)->syscalls) | |
153 | ||
154 | /* Seconds as in time(2). */ | |
155 | #define TARGET_TIME(cpu) (TARGET_EPOCH + TARGET_TIME_MS (cpu) / 1000) | |
156 | ||
157 | #define TARGET_SCHED_OTHER 0 | |
158 | ||
159 | #define TARGET_RLIMIT_STACK 3 | |
160 | #define TARGET_RLIMIT_NOFILE 7 | |
161 | ||
162 | #define SIM_TARGET_MAX_THREADS 64 | |
163 | #define SIM_MAX_ALLOC_CHUNK (512*1024*1024) | |
164 | ||
165 | /* From linux/sched.h. */ | |
166 | #define TARGET_CSIGNAL 0x000000ff | |
167 | #define TARGET_CLONE_VM 0x00000100 | |
168 | #define TARGET_CLONE_FS 0x00000200 | |
169 | #define TARGET_CLONE_FILES 0x00000400 | |
170 | #define TARGET_CLONE_SIGHAND 0x00000800 | |
171 | #define TARGET_CLONE_PID 0x00001000 | |
172 | #define TARGET_CLONE_PTRACE 0x00002000 | |
173 | #define TARGET_CLONE_VFORK 0x00004000 | |
174 | #define TARGET_CLONE_PARENT 0x00008000 | |
175 | #define TARGET_CLONE_THREAD 0x00010000 | |
176 | #define TARGET_CLONE_SIGNAL (TARGET_CLONE_SIGHAND | TARGET_CLONE_THREAD) | |
177 | ||
178 | /* From asm-cris/poll.h. */ | |
179 | #define TARGET_POLLIN 1 | |
180 | ||
181 | /* From asm-cris/signal.h. */ | |
182 | #define TARGET_SIG_BLOCK 0 | |
183 | #define TARGET_SIG_UNBLOCK 1 | |
184 | #define TARGET_SIG_SETMASK 2 | |
185 | ||
186 | #define TARGET_SIG_DFL 0 | |
187 | #define TARGET_SIG_IGN 1 | |
188 | #define TARGET_SIG_ERR ((USI)-1) | |
189 | ||
190 | #define TARGET_SIGHUP 1 | |
191 | #define TARGET_SIGINT 2 | |
192 | #define TARGET_SIGQUIT 3 | |
193 | #define TARGET_SIGILL 4 | |
194 | #define TARGET_SIGTRAP 5 | |
195 | #define TARGET_SIGABRT 6 | |
196 | #define TARGET_SIGIOT 6 | |
197 | #define TARGET_SIGBUS 7 | |
198 | #define TARGET_SIGFPE 8 | |
199 | #define TARGET_SIGKILL 9 | |
200 | #define TARGET_SIGUSR1 10 | |
201 | #define TARGET_SIGSEGV 11 | |
202 | #define TARGET_SIGUSR2 12 | |
203 | #define TARGET_SIGPIPE 13 | |
204 | #define TARGET_SIGALRM 14 | |
205 | #define TARGET_SIGTERM 15 | |
206 | #define TARGET_SIGSTKFLT 16 | |
207 | #define TARGET_SIGCHLD 17 | |
208 | #define TARGET_SIGCONT 18 | |
209 | #define TARGET_SIGSTOP 19 | |
210 | #define TARGET_SIGTSTP 20 | |
211 | #define TARGET_SIGTTIN 21 | |
212 | #define TARGET_SIGTTOU 22 | |
213 | #define TARGET_SIGURG 23 | |
214 | #define TARGET_SIGXCPU 24 | |
215 | #define TARGET_SIGXFSZ 25 | |
216 | #define TARGET_SIGVTALRM 26 | |
217 | #define TARGET_SIGPROF 27 | |
218 | #define TARGET_SIGWINCH 28 | |
219 | #define TARGET_SIGIO 29 | |
220 | #define TARGET_SIGPOLL SIGIO | |
221 | /* Actually commented out in the kernel header. */ | |
222 | #define TARGET_SIGLOST 29 | |
223 | #define TARGET_SIGPWR 30 | |
224 | #define TARGET_SIGSYS 31 | |
225 | ||
226 | /* From include/asm-cris/signal.h. */ | |
227 | #define TARGET_SA_NOCLDSTOP 0x00000001 | |
228 | #define TARGET_SA_NOCLDWAIT 0x00000002 /* not supported yet */ | |
229 | #define TARGET_SA_SIGINFO 0x00000004 | |
230 | #define TARGET_SA_ONSTACK 0x08000000 | |
231 | #define TARGET_SA_RESTART 0x10000000 | |
232 | #define TARGET_SA_NODEFER 0x40000000 | |
233 | #define TARGET_SA_RESETHAND 0x80000000 | |
234 | #define TARGET_SA_INTERRUPT 0x20000000 /* dummy -- ignored */ | |
235 | #define TARGET_SA_RESTORER 0x04000000 | |
236 | ||
237 | /* From linux/wait.h. */ | |
238 | #define TARGET_WNOHANG 1 | |
239 | #define TARGET_WUNTRACED 2 | |
240 | #define TARGET___WNOTHREAD 0x20000000 | |
241 | #define TARGET___WALL 0x40000000 | |
242 | #define TARGET___WCLONE 0x80000000 | |
243 | ||
eccd787e HPN |
244 | /* From linux/limits.h. */ |
245 | #define TARGET_PIPE_BUF 4096 | |
246 | ||
f6bcefef HPN |
247 | static const char stat_map[] = |
248 | "st_dev,2:space,10:space,4:st_mode,4:st_nlink,4:st_uid,4" | |
249 | ":st_gid,4:st_rdev,2:space,10:st_size,8:st_blksize,4:st_blocks,4" | |
250 | ":space,4:st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:space,4" | |
251 | ":st_ino,8"; | |
252 | ||
253 | static const CB_TARGET_DEFS_MAP syscall_map[] = | |
254 | { | |
255 | { CB_SYS_open, TARGET_SYS_open }, | |
256 | { CB_SYS_close, TARGET_SYS_close }, | |
257 | { CB_SYS_read, TARGET_SYS_read }, | |
258 | { CB_SYS_write, TARGET_SYS_write }, | |
259 | { CB_SYS_lseek, TARGET_SYS_lseek }, | |
260 | { CB_SYS_unlink, TARGET_SYS_unlink }, | |
261 | { CB_SYS_getpid, TARGET_SYS_getpid }, | |
262 | { CB_SYS_fstat, TARGET_SYS_fstat64 }, | |
263 | { CB_SYS_lstat, TARGET_SYS_lstat64 }, | |
264 | { CB_SYS_stat, TARGET_SYS_stat64 }, | |
265 | { CB_SYS_pipe, TARGET_SYS_pipe }, | |
f6bcefef HPN |
266 | { CB_SYS_rename, TARGET_SYS_rename }, |
267 | { CB_SYS_truncate, TARGET_SYS_truncate }, | |
268 | { CB_SYS_ftruncate, TARGET_SYS_ftruncate }, | |
269 | { 0, -1 } | |
270 | }; | |
271 | ||
272 | /* An older, 32-bit-only stat mapping. */ | |
273 | static const char stat32_map[] = | |
274 | "st_dev,2:space,2:st_ino,4:st_mode,2:st_nlink,2:st_uid,2" | |
275 | ":st_gid,2:st_rdev,2:space,2:st_size,4:st_blksize,4:st_blocks,4" | |
276 | ":st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:space,12"; | |
277 | ||
278 | /* Map for calls using the 32-bit struct stat. Primarily used by the | |
279 | newlib Linux mapping. */ | |
280 | static const CB_TARGET_DEFS_MAP syscall_stat32_map[] = | |
281 | { | |
282 | { CB_SYS_fstat, TARGET_SYS_fstat }, | |
5457266c | 283 | { CB_SYS_stat, TARGET_SYS_stat }, |
f6bcefef HPN |
284 | { 0, -1 } |
285 | }; | |
286 | ||
287 | /* Giving the true value for the running sim process will lead to | |
288 | non-time-invariant behavior. */ | |
289 | #define TARGET_PID 42 | |
290 | ||
291 | /* Unfortunately, we don't get this from cris.cpu at the moment, and if | |
292 | we did, we'd still don't get a register number with the "16" offset. */ | |
293 | #define TARGET_SRP_REGNUM (16+11) | |
294 | ||
295 | /* Extracted by applying | |
296 | awk '/^#define/ { printf "#ifdef %s\n { %s, %s },\n#endif\n", $2, $2, $3;}' | |
297 | on .../include/asm/errno.h in a GNU/Linux/CRIS installation and | |
298 | adjusting the synonyms. */ | |
299 | ||
300 | static const CB_TARGET_DEFS_MAP errno_map[] = | |
301 | { | |
302 | #ifdef EPERM | |
303 | { EPERM, 1 }, | |
304 | #endif | |
305 | #ifdef ENOENT | |
306 | { ENOENT, 2 }, | |
307 | #endif | |
308 | #ifdef ESRCH | |
309 | { ESRCH, 3 }, | |
310 | #endif | |
311 | #ifdef EINTR | |
312 | { EINTR, 4 }, | |
313 | #endif | |
314 | #ifdef EIO | |
315 | { EIO, 5 }, | |
316 | #endif | |
317 | #ifdef ENXIO | |
318 | { ENXIO, 6 }, | |
319 | #endif | |
320 | #ifdef E2BIG | |
321 | { E2BIG, 7 }, | |
322 | #endif | |
323 | #ifdef ENOEXEC | |
324 | { ENOEXEC, 8 }, | |
325 | #endif | |
326 | #ifdef EBADF | |
327 | { EBADF, 9 }, | |
328 | #endif | |
329 | #ifdef ECHILD | |
330 | { ECHILD, 10 }, | |
331 | #endif | |
332 | #ifdef EAGAIN | |
333 | { EAGAIN, 11 }, | |
334 | #endif | |
335 | #ifdef ENOMEM | |
336 | { ENOMEM, 12 }, | |
337 | #endif | |
338 | #ifdef EACCES | |
339 | { EACCES, 13 }, | |
340 | #endif | |
341 | #ifdef EFAULT | |
342 | { EFAULT, 14 }, | |
343 | #endif | |
344 | #ifdef ENOTBLK | |
345 | { ENOTBLK, 15 }, | |
346 | #endif | |
347 | #ifdef EBUSY | |
348 | { EBUSY, 16 }, | |
349 | #endif | |
350 | #ifdef EEXIST | |
351 | { EEXIST, 17 }, | |
352 | #endif | |
353 | #ifdef EXDEV | |
354 | { EXDEV, 18 }, | |
355 | #endif | |
356 | #ifdef ENODEV | |
357 | { ENODEV, 19 }, | |
358 | #endif | |
359 | #ifdef ENOTDIR | |
360 | { ENOTDIR, 20 }, | |
361 | #endif | |
362 | #ifdef EISDIR | |
363 | { EISDIR, 21 }, | |
364 | #endif | |
365 | #ifdef EINVAL | |
366 | { EINVAL, 22 }, | |
367 | #endif | |
368 | #ifdef ENFILE | |
369 | { ENFILE, 23 }, | |
370 | #endif | |
371 | #ifdef EMFILE | |
372 | { EMFILE, 24 }, | |
373 | #endif | |
374 | #ifdef ENOTTY | |
375 | { ENOTTY, 25 }, | |
376 | #endif | |
377 | #ifdef ETXTBSY | |
378 | { ETXTBSY, 26 }, | |
379 | #endif | |
380 | #ifdef EFBIG | |
381 | { EFBIG, 27 }, | |
382 | #endif | |
383 | #ifdef ENOSPC | |
384 | { ENOSPC, 28 }, | |
385 | #endif | |
386 | #ifdef ESPIPE | |
387 | { ESPIPE, 29 }, | |
388 | #endif | |
389 | #ifdef EROFS | |
390 | { EROFS, 30 }, | |
391 | #endif | |
392 | #ifdef EMLINK | |
393 | { EMLINK, 31 }, | |
394 | #endif | |
395 | #ifdef EPIPE | |
396 | { EPIPE, 32 }, | |
397 | #endif | |
398 | #ifdef EDOM | |
399 | { EDOM, 33 }, | |
400 | #endif | |
401 | #ifdef ERANGE | |
402 | { ERANGE, 34 }, | |
403 | #endif | |
404 | #ifdef EDEADLK | |
405 | { EDEADLK, 35 }, | |
406 | #endif | |
407 | #ifdef ENAMETOOLONG | |
408 | { ENAMETOOLONG, 36 }, | |
409 | #endif | |
410 | #ifdef ENOLCK | |
411 | { ENOLCK, 37 }, | |
412 | #endif | |
413 | #ifdef ENOSYS | |
414 | { ENOSYS, 38 }, | |
415 | #endif | |
416 | #ifdef ENOTEMPTY | |
417 | { ENOTEMPTY, 39 }, | |
418 | #endif | |
419 | #ifdef ELOOP | |
420 | { ELOOP, 40 }, | |
421 | #endif | |
422 | #ifdef EWOULDBLOCK | |
423 | { EWOULDBLOCK, 11 }, | |
424 | #endif | |
425 | #ifdef ENOMSG | |
426 | { ENOMSG, 42 }, | |
427 | #endif | |
428 | #ifdef EIDRM | |
429 | { EIDRM, 43 }, | |
430 | #endif | |
431 | #ifdef ECHRNG | |
432 | { ECHRNG, 44 }, | |
433 | #endif | |
434 | #ifdef EL2NSYNC | |
435 | { EL2NSYNC, 45 }, | |
436 | #endif | |
437 | #ifdef EL3HLT | |
438 | { EL3HLT, 46 }, | |
439 | #endif | |
440 | #ifdef EL3RST | |
441 | { EL3RST, 47 }, | |
442 | #endif | |
443 | #ifdef ELNRNG | |
444 | { ELNRNG, 48 }, | |
445 | #endif | |
446 | #ifdef EUNATCH | |
447 | { EUNATCH, 49 }, | |
448 | #endif | |
449 | #ifdef ENOCSI | |
450 | { ENOCSI, 50 }, | |
451 | #endif | |
452 | #ifdef EL2HLT | |
453 | { EL2HLT, 51 }, | |
454 | #endif | |
455 | #ifdef EBADE | |
456 | { EBADE, 52 }, | |
457 | #endif | |
458 | #ifdef EBADR | |
459 | { EBADR, 53 }, | |
460 | #endif | |
461 | #ifdef EXFULL | |
462 | { EXFULL, 54 }, | |
463 | #endif | |
464 | #ifdef ENOANO | |
465 | { ENOANO, 55 }, | |
466 | #endif | |
467 | #ifdef EBADRQC | |
468 | { EBADRQC, 56 }, | |
469 | #endif | |
470 | #ifdef EBADSLT | |
471 | { EBADSLT, 57 }, | |
472 | #endif | |
473 | #ifdef EDEADLOCK | |
474 | { EDEADLOCK, 35 }, | |
475 | #endif | |
476 | #ifdef EBFONT | |
477 | { EBFONT, 59 }, | |
478 | #endif | |
479 | #ifdef ENOSTR | |
480 | { ENOSTR, 60 }, | |
481 | #endif | |
482 | #ifdef ENODATA | |
483 | { ENODATA, 61 }, | |
484 | #endif | |
485 | #ifdef ETIME | |
486 | { ETIME, 62 }, | |
487 | #endif | |
488 | #ifdef ENOSR | |
489 | { ENOSR, 63 }, | |
490 | #endif | |
491 | #ifdef ENONET | |
492 | { ENONET, 64 }, | |
493 | #endif | |
494 | #ifdef ENOPKG | |
495 | { ENOPKG, 65 }, | |
496 | #endif | |
497 | #ifdef EREMOTE | |
498 | { EREMOTE, 66 }, | |
499 | #endif | |
500 | #ifdef ENOLINK | |
501 | { ENOLINK, 67 }, | |
502 | #endif | |
503 | #ifdef EADV | |
504 | { EADV, 68 }, | |
505 | #endif | |
506 | #ifdef ESRMNT | |
507 | { ESRMNT, 69 }, | |
508 | #endif | |
509 | #ifdef ECOMM | |
510 | { ECOMM, 70 }, | |
511 | #endif | |
512 | #ifdef EPROTO | |
513 | { EPROTO, 71 }, | |
514 | #endif | |
515 | #ifdef EMULTIHOP | |
516 | { EMULTIHOP, 72 }, | |
517 | #endif | |
518 | #ifdef EDOTDOT | |
519 | { EDOTDOT, 73 }, | |
520 | #endif | |
521 | #ifdef EBADMSG | |
522 | { EBADMSG, 74 }, | |
523 | #endif | |
524 | #ifdef EOVERFLOW | |
525 | { EOVERFLOW, 75 }, | |
526 | #endif | |
527 | #ifdef ENOTUNIQ | |
528 | { ENOTUNIQ, 76 }, | |
529 | #endif | |
530 | #ifdef EBADFD | |
531 | { EBADFD, 77 }, | |
532 | #endif | |
533 | #ifdef EREMCHG | |
534 | { EREMCHG, 78 }, | |
535 | #endif | |
536 | #ifdef ELIBACC | |
537 | { ELIBACC, 79 }, | |
538 | #endif | |
539 | #ifdef ELIBBAD | |
540 | { ELIBBAD, 80 }, | |
541 | #endif | |
542 | #ifdef ELIBSCN | |
543 | { ELIBSCN, 81 }, | |
544 | #endif | |
545 | #ifdef ELIBMAX | |
546 | { ELIBMAX, 82 }, | |
547 | #endif | |
548 | #ifdef ELIBEXEC | |
549 | { ELIBEXEC, 83 }, | |
550 | #endif | |
551 | #ifdef EILSEQ | |
552 | { EILSEQ, 84 }, | |
553 | #endif | |
554 | #ifdef ERESTART | |
555 | { ERESTART, 85 }, | |
556 | #endif | |
557 | #ifdef ESTRPIPE | |
558 | { ESTRPIPE, 86 }, | |
559 | #endif | |
560 | #ifdef EUSERS | |
561 | { EUSERS, 87 }, | |
562 | #endif | |
563 | #ifdef ENOTSOCK | |
564 | { ENOTSOCK, 88 }, | |
565 | #endif | |
566 | #ifdef EDESTADDRREQ | |
567 | { EDESTADDRREQ, 89 }, | |
568 | #endif | |
569 | #ifdef EMSGSIZE | |
570 | { EMSGSIZE, 90 }, | |
571 | #endif | |
572 | #ifdef EPROTOTYPE | |
573 | { EPROTOTYPE, 91 }, | |
574 | #endif | |
575 | #ifdef ENOPROTOOPT | |
576 | { ENOPROTOOPT, 92 }, | |
577 | #endif | |
578 | #ifdef EPROTONOSUPPORT | |
579 | { EPROTONOSUPPORT, 93 }, | |
580 | #endif | |
581 | #ifdef ESOCKTNOSUPPORT | |
582 | { ESOCKTNOSUPPORT, 94 }, | |
583 | #endif | |
584 | #ifdef EOPNOTSUPP | |
585 | { EOPNOTSUPP, 95 }, | |
586 | #endif | |
587 | #ifdef EPFNOSUPPORT | |
588 | { EPFNOSUPPORT, 96 }, | |
589 | #endif | |
590 | #ifdef EAFNOSUPPORT | |
591 | { EAFNOSUPPORT, 97 }, | |
592 | #endif | |
593 | #ifdef EADDRINUSE | |
594 | { EADDRINUSE, 98 }, | |
595 | #endif | |
596 | #ifdef EADDRNOTAVAIL | |
597 | { EADDRNOTAVAIL, 99 }, | |
598 | #endif | |
599 | #ifdef ENETDOWN | |
600 | { ENETDOWN, 100 }, | |
601 | #endif | |
602 | #ifdef ENETUNREACH | |
603 | { ENETUNREACH, 101 }, | |
604 | #endif | |
605 | #ifdef ENETRESET | |
606 | { ENETRESET, 102 }, | |
607 | #endif | |
608 | #ifdef ECONNABORTED | |
609 | { ECONNABORTED, 103 }, | |
610 | #endif | |
611 | #ifdef ECONNRESET | |
612 | { ECONNRESET, 104 }, | |
613 | #endif | |
614 | #ifdef ENOBUFS | |
615 | { ENOBUFS, 105 }, | |
616 | #endif | |
617 | #ifdef EISCONN | |
618 | { EISCONN, 106 }, | |
619 | #endif | |
620 | #ifdef ENOTCONN | |
621 | { ENOTCONN, 107 }, | |
622 | #endif | |
623 | #ifdef ESHUTDOWN | |
624 | { ESHUTDOWN, 108 }, | |
625 | #endif | |
626 | #ifdef ETOOMANYREFS | |
627 | { ETOOMANYREFS, 109 }, | |
628 | #endif | |
629 | #ifdef ETIMEDOUT | |
630 | { ETIMEDOUT, 110 }, | |
631 | #endif | |
632 | #ifdef ECONNREFUSED | |
633 | { ECONNREFUSED, 111 }, | |
634 | #endif | |
635 | #ifdef EHOSTDOWN | |
636 | { EHOSTDOWN, 112 }, | |
637 | #endif | |
638 | #ifdef EHOSTUNREACH | |
639 | { EHOSTUNREACH, 113 }, | |
640 | #endif | |
641 | #ifdef EALREADY | |
642 | { EALREADY, 114 }, | |
643 | #endif | |
644 | #ifdef EINPROGRESS | |
645 | { EINPROGRESS, 115 }, | |
646 | #endif | |
647 | #ifdef ESTALE | |
648 | { ESTALE, 116 }, | |
649 | #endif | |
650 | #ifdef EUCLEAN | |
651 | { EUCLEAN, 117 }, | |
652 | #endif | |
653 | #ifdef ENOTNAM | |
654 | { ENOTNAM, 118 }, | |
655 | #endif | |
656 | #ifdef ENAVAIL | |
657 | { ENAVAIL, 119 }, | |
658 | #endif | |
659 | #ifdef EISNAM | |
660 | { EISNAM, 120 }, | |
661 | #endif | |
662 | #ifdef EREMOTEIO | |
663 | { EREMOTEIO, 121 }, | |
664 | #endif | |
665 | #ifdef EDQUOT | |
666 | { EDQUOT, 122 }, | |
667 | #endif | |
668 | #ifdef ENOMEDIUM | |
669 | { ENOMEDIUM, 123 }, | |
670 | #endif | |
671 | #ifdef EMEDIUMTYPE | |
672 | { EMEDIUMTYPE, 124 }, | |
673 | #endif | |
674 | { 0, -1 } | |
675 | }; | |
676 | ||
677 | /* Extracted by applying | |
678 | perl -ne 'if ($_ =~ /^#define/) { split; | |
679 | printf "#ifdef $_[1]\n { %s, 0x%x },\n#endif\n", | |
680 | $_[1], $_[2] =~ /^0/ ? oct($_[2]) : $_[2];}' | |
681 | on pertinent parts of .../include/asm/fcntl.h in a GNU/Linux/CRIS | |
682 | installation and removing synonyms and unnecessary items. Don't | |
683 | forget the end-marker. */ | |
684 | ||
8b9b39f4 HPN |
685 | /* These we treat specially, as they're used in the fcntl F_GETFL |
686 | syscall. For consistency, open_map is also manually edited to use | |
687 | these macros. */ | |
688 | #define TARGET_O_ACCMODE 0x3 | |
689 | #define TARGET_O_RDONLY 0x0 | |
690 | #define TARGET_O_WRONLY 0x1 | |
ed1f044a | 691 | |
f6bcefef HPN |
692 | static const CB_TARGET_DEFS_MAP open_map[] = { |
693 | #ifdef O_ACCMODE | |
8b9b39f4 | 694 | { O_ACCMODE, TARGET_O_ACCMODE }, |
f6bcefef HPN |
695 | #endif |
696 | #ifdef O_RDONLY | |
8b9b39f4 | 697 | { O_RDONLY, TARGET_O_RDONLY }, |
f6bcefef HPN |
698 | #endif |
699 | #ifdef O_WRONLY | |
8b9b39f4 | 700 | { O_WRONLY, TARGET_O_WRONLY }, |
f6bcefef HPN |
701 | #endif |
702 | #ifdef O_RDWR | |
703 | { O_RDWR, 0x2 }, | |
704 | #endif | |
705 | #ifdef O_CREAT | |
706 | { O_CREAT, 0x40 }, | |
707 | #endif | |
708 | #ifdef O_EXCL | |
709 | { O_EXCL, 0x80 }, | |
710 | #endif | |
711 | #ifdef O_NOCTTY | |
712 | { O_NOCTTY, 0x100 }, | |
713 | #endif | |
714 | #ifdef O_TRUNC | |
715 | { O_TRUNC, 0x200 }, | |
716 | #endif | |
717 | #ifdef O_APPEND | |
718 | { O_APPEND, 0x400 }, | |
719 | #endif | |
720 | #ifdef O_NONBLOCK | |
721 | { O_NONBLOCK, 0x800 }, | |
722 | #endif | |
723 | #ifdef O_NDELAY | |
724 | { O_NDELAY, 0x0 }, | |
725 | #endif | |
726 | #ifdef O_SYNC | |
727 | { O_SYNC, 0x1000 }, | |
728 | #endif | |
729 | #ifdef FASYNC | |
730 | { FASYNC, 0x2000 }, | |
731 | #endif | |
732 | #ifdef O_DIRECT | |
733 | { O_DIRECT, 0x4000 }, | |
734 | #endif | |
735 | #ifdef O_LARGEFILE | |
736 | { O_LARGEFILE, 0x8000 }, | |
737 | #endif | |
738 | #ifdef O_DIRECTORY | |
739 | { O_DIRECTORY, 0x10000 }, | |
740 | #endif | |
741 | #ifdef O_NOFOLLOW | |
742 | { O_NOFOLLOW, 0x20000 }, | |
743 | #endif | |
744 | { -1, -1 } | |
745 | }; | |
746 | ||
747 | /* Needed for the cris_pipe_nonempty and cris_pipe_empty syscalls. */ | |
748 | static SIM_CPU *current_cpu_for_cb_callback; | |
749 | ||
750 | static int syscall_read_mem (host_callback *, struct cb_syscall *, | |
751 | unsigned long, char *, int); | |
752 | static int syscall_write_mem (host_callback *, struct cb_syscall *, | |
753 | unsigned long, const char *, int); | |
754 | static USI create_map (SIM_DESC, struct cris_sim_mmapped_page **, | |
755 | USI addr, USI len); | |
756 | static USI unmap_pages (SIM_DESC, struct cris_sim_mmapped_page **, | |
757 | USI addr, USI len); | |
758 | static USI is_mapped (SIM_DESC, struct cris_sim_mmapped_page **, | |
759 | USI addr, USI len); | |
760 | static void dump_statistics (SIM_CPU *current_cpu); | |
761 | static void make_first_thread (SIM_CPU *current_cpu); | |
762 | ||
763 | /* Read/write functions for system call interface. */ | |
764 | ||
765 | static int | |
766 | syscall_read_mem (host_callback *cb ATTRIBUTE_UNUSED, | |
767 | struct cb_syscall *sc, | |
768 | unsigned long taddr, char *buf, int bytes) | |
769 | { | |
770 | SIM_DESC sd = (SIM_DESC) sc->p1; | |
771 | SIM_CPU *cpu = (SIM_CPU *) sc->p2; | |
772 | ||
773 | return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes); | |
774 | } | |
775 | ||
776 | static int | |
777 | syscall_write_mem (host_callback *cb ATTRIBUTE_UNUSED, | |
778 | struct cb_syscall *sc, | |
779 | unsigned long taddr, const char *buf, int bytes) | |
780 | { | |
781 | SIM_DESC sd = (SIM_DESC) sc->p1; | |
782 | SIM_CPU *cpu = (SIM_CPU *) sc->p2; | |
783 | ||
784 | return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes); | |
785 | } | |
786 | ||
787 | /* When we risk running self-modified code (as in trampolines), this is | |
788 | called from special-case insns. The silicon CRIS CPU:s have enough | |
789 | cache snooping implemented making this a simulator-only issue. Tests: | |
790 | gcc.c-torture/execute/931002-1.c execution, -O3 -g | |
791 | gcc.c-torture/execute/931002-1.c execution, -O3 -fomit-frame-pointer. */ | |
792 | ||
793 | void | |
794 | cris_flush_simulator_decode_cache (SIM_CPU *current_cpu, | |
795 | USI pc ATTRIBUTE_UNUSED) | |
796 | { | |
797 | SIM_DESC sd = CPU_STATE (current_cpu); | |
798 | ||
799 | #if WITH_SCACHE | |
800 | if (USING_SCACHE_P (sd)) | |
801 | scache_flush_cpu (current_cpu); | |
802 | #endif | |
803 | } | |
804 | ||
805 | /* Output statistics at the end of a run. */ | |
806 | static void | |
807 | dump_statistics (SIM_CPU *current_cpu) | |
808 | { | |
809 | SIM_DESC sd = CPU_STATE (current_cpu); | |
810 | CRIS_MISC_PROFILE *profp | |
811 | = CPU_CRIS_MISC_PROFILE (current_cpu); | |
812 | unsigned64 total = profp->basic_cycle_count; | |
813 | const char *textmsg = "Basic clock cycles, total @: %llu\n"; | |
814 | ||
815 | /* The --cris-stats={basic|unaligned|schedulable|all} counts affect | |
816 | what's included in the "total" count only. */ | |
817 | switch (CPU_CRIS_MISC_PROFILE (current_cpu)->flags | |
818 | & FLAG_CRIS_MISC_PROFILE_ALL) | |
819 | { | |
820 | case FLAG_CRIS_MISC_PROFILE_SIMPLE: | |
821 | break; | |
822 | ||
823 | case (FLAG_CRIS_MISC_PROFILE_UNALIGNED | FLAG_CRIS_MISC_PROFILE_SIMPLE): | |
824 | textmsg | |
825 | = "Clock cycles including stall cycles for unaligned accesses @: %llu\n"; | |
826 | total += profp->unaligned_mem_dword_count; | |
827 | break; | |
828 | ||
829 | case (FLAG_CRIS_MISC_PROFILE_SCHEDULABLE | FLAG_CRIS_MISC_PROFILE_SIMPLE): | |
830 | textmsg = "Schedulable clock cycles, total @: %llu\n"; | |
831 | total | |
832 | += (profp->memsrc_stall_count | |
833 | + profp->memraw_stall_count | |
834 | + profp->movemsrc_stall_count | |
835 | + profp->movemdst_stall_count | |
836 | + profp->mulsrc_stall_count | |
837 | + profp->jumpsrc_stall_count | |
838 | + profp->unaligned_mem_dword_count); | |
839 | break; | |
840 | ||
841 | case FLAG_CRIS_MISC_PROFILE_ALL: | |
842 | textmsg = "All accounted clock cycles, total @: %llu\n"; | |
843 | total | |
844 | += (profp->memsrc_stall_count | |
845 | + profp->memraw_stall_count | |
846 | + profp->movemsrc_stall_count | |
847 | + profp->movemdst_stall_count | |
848 | + profp->movemaddr_stall_count | |
849 | + profp->mulsrc_stall_count | |
850 | + profp->jumpsrc_stall_count | |
851 | + profp->branch_stall_count | |
852 | + profp->jumptarget_stall_count | |
853 | + profp->unaligned_mem_dword_count); | |
854 | break; | |
855 | ||
856 | default: | |
857 | abort (); | |
858 | ||
859 | sim_io_eprintf (sd, | |
860 | "Internal inconsistency at %s:%d", | |
861 | __FILE__, __LINE__); | |
862 | sim_engine_halt (sd, current_cpu, NULL, 0, | |
863 | sim_stopped, SIM_SIGILL); | |
864 | } | |
865 | ||
866 | /* Historically, these messages have gone to stderr, so we'll keep it | |
867 | that way. It's also easier to then tell it from normal program | |
868 | output. FIXME: Add redirect option like "run -e file". */ | |
869 | sim_io_eprintf (sd, textmsg, total); | |
870 | ||
871 | /* For v32, unaligned_mem_dword_count should always be 0. For | |
872 | v10, memsrc_stall_count should always be 0. */ | |
6a4669ea HPN |
873 | sim_io_eprintf (sd, "Memory source stall cycles: %llu\n", |
874 | (unsigned long long) (profp->memsrc_stall_count | |
875 | + profp->unaligned_mem_dword_count)); | |
876 | sim_io_eprintf (sd, "Memory read-after-write stall cycles: %llu\n", | |
877 | (unsigned long long) profp->memraw_stall_count); | |
878 | sim_io_eprintf (sd, "Movem source stall cycles: %llu\n", | |
879 | (unsigned long long) profp->movemsrc_stall_count); | |
880 | sim_io_eprintf (sd, "Movem destination stall cycles: %llu\n", | |
881 | (unsigned long long) profp->movemdst_stall_count); | |
882 | sim_io_eprintf (sd, "Movem address stall cycles: %llu\n", | |
883 | (unsigned long long) profp->movemaddr_stall_count); | |
884 | sim_io_eprintf (sd, "Multiplication source stall cycles: %llu\n", | |
885 | (unsigned long long) profp->mulsrc_stall_count); | |
886 | sim_io_eprintf (sd, "Jump source stall cycles: %llu\n", | |
887 | (unsigned long long) profp->jumpsrc_stall_count); | |
888 | sim_io_eprintf (sd, "Branch misprediction stall cycles: %llu\n", | |
889 | (unsigned long long) profp->branch_stall_count); | |
890 | sim_io_eprintf (sd, "Jump target stall cycles: %llu\n", | |
891 | (unsigned long long) profp->jumptarget_stall_count); | |
f6bcefef HPN |
892 | } |
893 | ||
894 | /* Check whether any part of [addr .. addr + len - 1] is already mapped. | |
895 | Return 1 if a overlap detected, 0 otherwise. */ | |
896 | ||
897 | static USI | |
898 | is_mapped (SIM_DESC sd ATTRIBUTE_UNUSED, | |
899 | struct cris_sim_mmapped_page **rootp, | |
900 | USI addr, USI len) | |
901 | { | |
902 | struct cris_sim_mmapped_page *mapp; | |
903 | ||
904 | if (len == 0 || (len & 8191)) | |
905 | abort (); | |
906 | ||
907 | /* Iterate over the reverse-address sorted pages until we find a page in | |
908 | or lower than the checked area. */ | |
909 | for (mapp = *rootp; mapp != NULL && mapp->addr >= addr; mapp = mapp->prev) | |
910 | if (mapp->addr < addr + len && mapp->addr >= addr) | |
911 | return 1; | |
912 | ||
913 | return 0; | |
914 | } | |
915 | ||
c06ccdf1 HPN |
916 | /* Check whether any part of [addr .. addr + len - 1] is *un*mapped. |
917 | Return 1 if the whole area is mapped, 0 otherwise. */ | |
918 | ||
919 | static USI | |
920 | is_mapped_only (SIM_DESC sd ATTRIBUTE_UNUSED, | |
921 | struct cris_sim_mmapped_page **rootp, | |
922 | USI addr, USI len) | |
923 | { | |
924 | struct cris_sim_mmapped_page *mapp; | |
925 | ||
926 | if (len == 0 || (len & 8191)) | |
927 | abort (); | |
928 | ||
929 | /* Iterate over the reverse-address sorted pages until we find a page | |
930 | lower than the checked area. */ | |
931 | for (mapp = *rootp; mapp != NULL && mapp->addr >= addr; mapp = mapp->prev) | |
932 | if (addr == mapp->addr && len == 8192) | |
933 | return 1; | |
934 | else if (addr + len > mapp->addr) | |
935 | len -= 8192; | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
940 | /* Debug helper; to be run from gdb. */ | |
941 | ||
942 | void | |
943 | cris_dump_map (SIM_CPU *current_cpu) | |
944 | { | |
945 | struct cris_sim_mmapped_page *mapp; | |
946 | USI start, end; | |
947 | ||
948 | for (mapp = current_cpu->highest_mmapped_page, | |
949 | start = mapp == NULL ? 0 : mapp->addr + 8192, | |
950 | end = mapp == NULL ? 0 : mapp->addr + 8191; | |
951 | mapp != NULL; | |
952 | mapp = mapp->prev) | |
953 | { | |
954 | if (mapp->addr != start - 8192) | |
955 | { | |
956 | sim_io_eprintf (CPU_STATE (current_cpu), "0x%x..0x%x\n", start, end); | |
957 | end = mapp->addr + 8191; | |
958 | } | |
959 | ||
960 | start = mapp->addr; | |
961 | } | |
962 | ||
963 | if (current_cpu->highest_mmapped_page != NULL) | |
964 | sim_io_eprintf (CPU_STATE (current_cpu), "0x%x..0x%x\n", start, end); | |
965 | } | |
966 | ||
f6bcefef HPN |
967 | /* Create mmapped memory. */ |
968 | ||
969 | static USI | |
970 | create_map (SIM_DESC sd, struct cris_sim_mmapped_page **rootp, USI addr, | |
971 | USI len) | |
972 | { | |
973 | struct cris_sim_mmapped_page *mapp; | |
974 | struct cris_sim_mmapped_page **higher_prevp = rootp; | |
975 | USI new_addr = 0x40000000; | |
976 | ||
977 | if (addr != 0) | |
978 | new_addr = addr; | |
979 | else if (*rootp) | |
980 | new_addr = rootp[0]->addr + 8192; | |
981 | ||
982 | if (len != 8192) | |
983 | { | |
984 | USI page_addr; | |
985 | ||
986 | if (len & 8191) | |
987 | /* Which is better: return an error for this, or just round it up? */ | |
988 | abort (); | |
989 | ||
990 | /* Do a recursive call for each page in the request. */ | |
991 | for (page_addr = new_addr; len != 0; page_addr += 8192, len -= 8192) | |
992 | if (create_map (sd, rootp, page_addr, 8192) >= (USI) -8191) | |
993 | abort (); | |
994 | ||
995 | return new_addr; | |
996 | } | |
997 | ||
998 | for (mapp = *rootp; | |
999 | mapp != NULL && mapp->addr > new_addr; | |
1000 | mapp = mapp->prev) | |
1001 | higher_prevp = &mapp->prev; | |
1002 | ||
1003 | /* Allocate the new page, on the next higher page from the last one | |
1004 | allocated, and link in the new descriptor before previous ones. */ | |
1005 | mapp = malloc (sizeof (*mapp)); | |
1006 | ||
1007 | if (mapp == NULL) | |
1008 | return (USI) -ENOMEM; | |
1009 | ||
1010 | sim_core_attach (sd, NULL, 0, access_read_write_exec, 0, | |
1011 | new_addr, len, | |
1012 | 0, NULL, NULL); | |
1013 | ||
1014 | mapp->addr = new_addr; | |
1015 | mapp->prev = *higher_prevp; | |
1016 | *higher_prevp = mapp; | |
1017 | ||
1018 | return new_addr; | |
1019 | } | |
1020 | ||
1021 | /* Unmap one or more pages. */ | |
1022 | ||
1023 | static USI | |
1024 | unmap_pages (SIM_DESC sd, struct cris_sim_mmapped_page **rootp, USI addr, | |
1025 | USI len) | |
1026 | { | |
1027 | struct cris_sim_mmapped_page *mapp; | |
1028 | struct cris_sim_mmapped_page **higher_prevp = rootp; | |
1029 | ||
1030 | if (len != 8192) | |
1031 | { | |
1032 | USI page_addr; | |
1033 | ||
1034 | if (len & 8191) | |
1035 | /* Which is better: return an error for this, or just round it up? */ | |
1036 | abort (); | |
1037 | ||
1038 | /* Loop backwards to make each call is O(1) over the number of pages | |
1039 | allocated, if we're unmapping from the high end of the pages. */ | |
1040 | for (page_addr = addr + len - 8192; | |
1041 | page_addr >= addr; | |
1042 | page_addr -= 8192) | |
1043 | if (unmap_pages (sd, rootp, page_addr, 8192) != 0) | |
1044 | abort (); | |
1045 | ||
1046 | return 0; | |
1047 | } | |
1048 | ||
1049 | for (mapp = *rootp; mapp != NULL && mapp->addr > addr; mapp = mapp->prev) | |
1050 | higher_prevp = &mapp->prev; | |
1051 | ||
1052 | if (mapp == NULL || mapp->addr != addr) | |
1053 | return EINVAL; | |
1054 | ||
1055 | *higher_prevp = mapp->prev; | |
1056 | sim_core_detach (sd, NULL, 0, 0, addr); | |
1057 | free (mapp); | |
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | /* The semantic code invokes this for illegal (unrecognized) instructions. */ | |
1062 | ||
1063 | SEM_PC | |
1064 | sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc) | |
1065 | { | |
1066 | SIM_DESC sd = CPU_STATE (current_cpu); | |
1067 | ||
1068 | sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL); | |
1069 | return vpc; | |
1070 | } | |
1071 | ||
1072 | /* Handlers from the CGEN description that should not be called. */ | |
1073 | ||
1074 | USI | |
1075 | cris_bmod_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, | |
1076 | UINT srcreg ATTRIBUTE_UNUSED, | |
1077 | USI dstreg ATTRIBUTE_UNUSED) | |
1078 | { | |
1079 | abort (); | |
1080 | } | |
1081 | ||
1082 | void | |
1083 | h_supr_set_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, | |
1084 | UINT index ATTRIBUTE_UNUSED, | |
1085 | USI page ATTRIBUTE_UNUSED, | |
1086 | USI newval ATTRIBUTE_UNUSED) | |
1087 | { | |
1088 | abort (); | |
1089 | } | |
1090 | ||
1091 | USI | |
1092 | h_supr_get_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, | |
1093 | UINT index ATTRIBUTE_UNUSED, | |
1094 | USI page ATTRIBUTE_UNUSED) | |
1095 | { | |
1096 | abort (); | |
1097 | } | |
1098 | ||
1099 | /* Swap one context for another. */ | |
1100 | ||
1101 | static void | |
1102 | schedule (SIM_CPU *current_cpu, int next) | |
1103 | { | |
1104 | /* Need to mark context-switches in the trace output. */ | |
1105 | if ((CPU_CRIS_MISC_PROFILE (current_cpu)->flags | |
1106 | & FLAG_CRIS_MISC_PROFILE_XSIM_TRACE)) | |
1107 | cris_trace_printf (CPU_STATE (current_cpu), current_cpu, | |
1108 | "\t#:%d\n", next); | |
1109 | ||
1110 | /* Copy the current context (if there is one) to its slot. */ | |
1111 | if (current_cpu->thread_data[current_cpu->threadno].cpu_context) | |
1112 | memcpy (current_cpu->thread_data[current_cpu->threadno].cpu_context, | |
1113 | ¤t_cpu->cpu_data_placeholder, | |
1114 | current_cpu->thread_cpu_data_size); | |
1115 | ||
1116 | /* Copy the new context from its slot. */ | |
1117 | memcpy (¤t_cpu->cpu_data_placeholder, | |
1118 | current_cpu->thread_data[next].cpu_context, | |
1119 | current_cpu->thread_cpu_data_size); | |
1120 | ||
1121 | /* Update needed stuff to indicate the new context. */ | |
1122 | current_cpu->threadno = next; | |
1123 | ||
1124 | /* Handle pending signals. */ | |
1125 | if (current_cpu->thread_data[next].sigpending | |
1126 | /* We don't run nested signal handlers. This means that pause(2) | |
1127 | and sigsuspend(2) do not work in sighandlers, but that | |
1128 | shouldn't be too hard a restriction. It also greatly | |
1129 | simplifies the code. */ | |
1130 | && current_cpu->thread_data[next].cpu_context_atsignal == NULL) | |
1131 | { | |
1132 | int sig; | |
1133 | ||
1134 | /* See if there's really a pending, non-blocked handler. We don't | |
1135 | queue signals, so just use the first one in ascending order. */ | |
1136 | for (sig = 0; sig < 64; sig++) | |
1137 | if (current_cpu->thread_data[next].sigdata[sig].pending | |
1138 | && !current_cpu->thread_data[next].sigdata[sig].blocked) | |
1139 | { | |
1140 | bfd_byte regbuf[4]; | |
1141 | USI sp; | |
1142 | int i; | |
1143 | USI blocked; | |
1144 | USI pc = sim_pc_get (current_cpu); | |
1145 | ||
1146 | /* It's simpler to save the CPU context inside the simulator | |
1147 | than on the stack. */ | |
1148 | current_cpu->thread_data[next].cpu_context_atsignal | |
1149 | = (*current_cpu | |
1150 | ->make_thread_cpu_data) (current_cpu, | |
1151 | current_cpu->thread_data[next] | |
1152 | .cpu_context); | |
1153 | ||
1154 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_SP, regbuf, 4); | |
1155 | sp = bfd_getl32 (regbuf); | |
1156 | ||
1157 | /* Make sure we have an aligned stack. */ | |
1158 | sp &= ~3; | |
1159 | ||
1160 | /* Make room for the signal frame, aligned. FIXME: Check that | |
1161 | the memory exists, map it in if absent. (BTW, should also | |
1162 | implement on-access automatic stack allocation). */ | |
1163 | sp -= 20; | |
1164 | ||
1165 | /* This isn't the same signal frame as the kernel uses, because | |
1166 | we don't want to bother getting all registers on and off the | |
1167 | stack. */ | |
1168 | ||
1169 | /* First, we store the currently blocked signals. */ | |
1170 | blocked = 0; | |
1171 | for (i = 0; i < 32; i++) | |
1172 | blocked | |
1173 | |= current_cpu->thread_data[next].sigdata[i + 1].blocked << i; | |
1174 | sim_core_write_aligned_4 (current_cpu, pc, 0, sp, blocked); | |
1175 | blocked = 0; | |
1176 | for (i = 0; i < 31; i++) | |
1177 | blocked | |
1178 | |= current_cpu->thread_data[next].sigdata[i + 33].blocked << i; | |
1179 | sim_core_write_aligned_4 (current_cpu, pc, 0, sp + 4, blocked); | |
1180 | ||
1181 | /* Then, the actual instructions. This is CPU-specific, but we | |
1182 | use instructions from the common subset for v10 and v32 which | |
1183 | should be safe for the time being but could be parametrized | |
1184 | if need be. */ | |
1185 | /* MOVU.W [PC+],R9. */ | |
1186 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 8, 0x9c5f); | |
1187 | /* .WORD TARGET_SYS_sigreturn. */ | |
1188 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 10, | |
1189 | TARGET_SYS_sigreturn); | |
1190 | /* BREAK 13. */ | |
1191 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 12, 0xe93d); | |
1192 | ||
1193 | /* NOP (on v32; it's SETF on v10, but is the correct compatible | |
1194 | instruction. Still, it doesn't matter because v10 has no | |
1195 | delay slot for BREAK so it will not be executed). */ | |
1196 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 16, 0x05b0); | |
1197 | ||
1198 | /* Modify registers to hold the right values for the sighandler | |
1199 | context: updated stackpointer and return address pointing to | |
1200 | the sigreturn stub. */ | |
1201 | bfd_putl32 (sp, regbuf); | |
1202 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_SP, regbuf, 4); | |
1203 | bfd_putl32 (sp + 8, regbuf); | |
1204 | (*CPU_REG_STORE (current_cpu)) (current_cpu, TARGET_SRP_REGNUM, | |
1205 | regbuf, 4); | |
1206 | ||
1207 | current_cpu->thread_data[next].sigdata[sig].pending = 0; | |
1208 | ||
1209 | /* Block this signal (for the duration of the sighandler). */ | |
1210 | current_cpu->thread_data[next].sigdata[sig].blocked = 1; | |
1211 | ||
1212 | sim_pc_set (current_cpu, current_cpu->sighandler[sig]); | |
1213 | bfd_putl32 (sig, regbuf); | |
1214 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R10, | |
1215 | regbuf, 4); | |
1216 | ||
1217 | /* We ignore a SA_SIGINFO flag in the sigaction call; the code I | |
1218 | needed all this for, specifies a SA_SIGINFO call but treats it | |
1219 | like an ordinary sighandler; only the signal number argument is | |
1220 | inspected. To make future need to implement SA_SIGINFO | |
1221 | correctly possible, we set the siginfo argument register to a | |
1222 | magic (hopefully non-address) number. (NB: then, you should | |
1223 | just need to pass the siginfo argument; it seems you probably | |
1224 | don't need to implement the specific rt_sigreturn.) */ | |
1225 | bfd_putl32 (0xbad5161f, regbuf); | |
1226 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R11, | |
1227 | regbuf, 4); | |
1228 | ||
1229 | /* The third argument is unused and the kernel sets it to 0. */ | |
1230 | bfd_putl32 (0, regbuf); | |
1231 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R12, | |
1232 | regbuf, 4); | |
1233 | return; | |
1234 | } | |
1235 | ||
1236 | /* No, there actually was no pending signal for this thread. Reset | |
1237 | this flag. */ | |
1238 | current_cpu->thread_data[next].sigpending = 0; | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | /* Reschedule the simplest possible way until something else is absolutely | |
1243 | necessary: | |
1244 | - A. Find the next process (round-robin) that doesn't have at_syscall | |
1245 | set, schedule it. | |
1246 | - B. If there is none, just run the next process, round-robin. | |
1247 | - Clear at_syscall for the current process. */ | |
1248 | ||
1249 | static void | |
1250 | reschedule (SIM_CPU *current_cpu) | |
1251 | { | |
1252 | int i; | |
1253 | ||
1254 | /* Iterate over all thread slots, because after a few thread creations | |
1255 | and exits, we don't know where the live ones are. */ | |
1256 | for (i = (current_cpu->threadno + 1) % SIM_TARGET_MAX_THREADS; | |
1257 | i != current_cpu->threadno; | |
1258 | i = (i + 1) % SIM_TARGET_MAX_THREADS) | |
1259 | if (current_cpu->thread_data[i].cpu_context | |
1260 | && current_cpu->thread_data[i].at_syscall == 0) | |
1261 | { | |
1262 | schedule (current_cpu, i); | |
1263 | return; | |
1264 | } | |
1265 | ||
1266 | /* Pick any next live thread. */ | |
1267 | for (i = (current_cpu->threadno + 1) % SIM_TARGET_MAX_THREADS; | |
1268 | i != current_cpu->threadno; | |
1269 | i = (i + 1) % SIM_TARGET_MAX_THREADS) | |
1270 | if (current_cpu->thread_data[i].cpu_context) | |
1271 | { | |
1272 | schedule (current_cpu, i); | |
1273 | return; | |
1274 | } | |
1275 | ||
1276 | /* More than one live thread, but we couldn't find the next one? */ | |
1277 | abort (); | |
1278 | } | |
1279 | ||
1280 | /* Set up everything to receive (or IGN) an incoming signal to the | |
1281 | current context. */ | |
1282 | ||
1283 | static int | |
1284 | deliver_signal (SIM_CPU *current_cpu, int sig, unsigned int pid) | |
1285 | { | |
1286 | int i; | |
1287 | USI pc = sim_pc_get (current_cpu); | |
1288 | ||
1289 | /* Find the thread index of the pid. */ | |
1290 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
1291 | /* Apparently it's ok to send signals to zombies (so a check for | |
1292 | current_cpu->thread_data[i].cpu_context != NULL would be | |
1293 | wrong). */ | |
1294 | if (current_cpu->thread_data[i].threadid == pid - TARGET_PID) | |
1295 | { | |
1296 | if (sig < 64) | |
1297 | switch (current_cpu->sighandler[sig]) | |
1298 | { | |
1299 | case TARGET_SIG_DFL: | |
1300 | switch (sig) | |
1301 | { | |
1302 | /* The following according to the glibc | |
1303 | documentation. (The kernel code has non-obvious | |
1304 | execution paths.) */ | |
1305 | case TARGET_SIGFPE: | |
1306 | case TARGET_SIGILL: | |
1307 | case TARGET_SIGSEGV: | |
1308 | case TARGET_SIGBUS: | |
1309 | case TARGET_SIGABRT: | |
1310 | case TARGET_SIGTRAP: | |
1311 | case TARGET_SIGSYS: | |
1312 | ||
1313 | case TARGET_SIGTERM: | |
1314 | case TARGET_SIGINT: | |
1315 | case TARGET_SIGQUIT: | |
1316 | case TARGET_SIGKILL: | |
1317 | case TARGET_SIGHUP: | |
1318 | ||
1319 | case TARGET_SIGALRM: | |
1320 | case TARGET_SIGVTALRM: | |
1321 | case TARGET_SIGPROF: | |
1322 | case TARGET_SIGSTOP: | |
1323 | ||
1324 | case TARGET_SIGPIPE: | |
1325 | case TARGET_SIGLOST: | |
1326 | case TARGET_SIGXCPU: | |
1327 | case TARGET_SIGXFSZ: | |
1328 | case TARGET_SIGUSR1: | |
1329 | case TARGET_SIGUSR2: | |
1330 | sim_io_eprintf (CPU_STATE (current_cpu), | |
1331 | "Exiting pid %d due to signal %d\n", | |
1332 | pid, sig); | |
1333 | sim_engine_halt (CPU_STATE (current_cpu), current_cpu, | |
1334 | NULL, pc, sim_stopped, | |
1335 | sig == TARGET_SIGABRT | |
1336 | ? SIM_SIGABRT : SIM_SIGILL); | |
1337 | return 0; | |
1338 | ||
1339 | /* The default for all other signals is to be ignored. */ | |
1340 | default: | |
1341 | return 0; | |
1342 | } | |
1343 | ||
1344 | case TARGET_SIG_IGN: | |
1345 | switch (sig) | |
1346 | { | |
1347 | case TARGET_SIGKILL: | |
1348 | case TARGET_SIGSTOP: | |
1349 | /* Can't ignore these signals. */ | |
1350 | sim_io_eprintf (CPU_STATE (current_cpu), | |
1351 | "Exiting pid %d due to signal %d\n", | |
1352 | pid, sig); | |
1353 | sim_engine_halt (CPU_STATE (current_cpu), current_cpu, | |
1354 | NULL, pc, sim_stopped, SIM_SIGILL); | |
1355 | return 0; | |
1356 | ||
1357 | default: | |
1358 | return 0; | |
1359 | } | |
1360 | break; | |
1361 | ||
1362 | default: | |
1363 | /* Mark the signal as pending, making schedule () check | |
1364 | closer. The signal will be handled when the thread is | |
1365 | scheduled and the signal is unblocked. */ | |
1366 | current_cpu->thread_data[i].sigdata[sig].pending = 1; | |
1367 | current_cpu->thread_data[i].sigpending = 1; | |
1368 | return 0; | |
1369 | } | |
1370 | else | |
1371 | { | |
1372 | sim_io_eprintf (CPU_STATE (current_cpu), | |
1373 | "Unimplemented signal: %d\n", sig); | |
1374 | sim_engine_halt (CPU_STATE (current_cpu), current_cpu, NULL, pc, | |
1375 | sim_stopped, SIM_SIGILL); | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | return | |
1380 | -cb_host_to_target_errno (STATE_CALLBACK (CPU_STATE (current_cpu)), | |
1381 | ESRCH); | |
1382 | } | |
1383 | ||
1384 | /* Make the vector and the first item, the main thread. */ | |
1385 | ||
1386 | static void | |
1387 | make_first_thread (SIM_CPU *current_cpu) | |
1388 | { | |
1389 | current_cpu->thread_data | |
1390 | = xcalloc (1, | |
1391 | SIM_TARGET_MAX_THREADS | |
1392 | * sizeof (current_cpu->thread_data[0])); | |
1393 | current_cpu->thread_data[0].cpu_context | |
1394 | = (*current_cpu->make_thread_cpu_data) (current_cpu, | |
1395 | ¤t_cpu | |
1396 | ->cpu_data_placeholder); | |
1397 | current_cpu->thread_data[0].parent_threadid = -1; | |
1398 | ||
1399 | /* For good measure. */ | |
1400 | if (TARGET_SIG_DFL != 0) | |
1401 | abort (); | |
1402 | } | |
1403 | ||
466b1d33 HPN |
1404 | /* Handle unknown system calls. Returns (if it does) the syscall |
1405 | return value. */ | |
1406 | ||
1407 | static USI | |
1408 | cris_unknown_syscall (SIM_CPU *current_cpu, USI pc, char *s, ...) | |
1409 | { | |
1410 | SIM_DESC sd = CPU_STATE (current_cpu); | |
1411 | host_callback *cb = STATE_CALLBACK (sd); | |
1412 | ||
1413 | if (cris_unknown_syscall_action == CRIS_USYSC_MSG_STOP | |
1414 | || cris_unknown_syscall_action == CRIS_USYSC_MSG_ENOSYS) | |
1415 | { | |
1416 | va_list ap; | |
1417 | ||
1418 | va_start (ap, s); | |
1419 | sim_io_evprintf (sd, s, ap); | |
1420 | va_end (ap); | |
1421 | ||
1422 | if (cris_unknown_syscall_action == CRIS_USYSC_MSG_STOP) | |
1423 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL); | |
1424 | } | |
1425 | ||
1426 | return -cb_host_to_target_errno (cb, ENOSYS); | |
1427 | } | |
1428 | ||
f6bcefef HPN |
1429 | /* Main function: the handler of the "break 13" syscall insn. */ |
1430 | ||
1431 | USI | |
1432 | cris_break_13_handler (SIM_CPU *current_cpu, USI callnum, USI arg1, | |
1433 | USI arg2, USI arg3, USI arg4, USI arg5, USI arg6, | |
1434 | USI pc) | |
1435 | { | |
1436 | CB_SYSCALL s; | |
1437 | SIM_DESC sd = CPU_STATE (current_cpu); | |
1438 | host_callback *cb = STATE_CALLBACK (sd); | |
1439 | int retval; | |
1440 | int threadno = current_cpu->threadno; | |
1441 | ||
1442 | current_cpu->syscalls++; | |
1443 | ||
1444 | CB_SYSCALL_INIT (&s); | |
1445 | s.func = callnum; | |
1446 | s.arg1 = arg1; | |
1447 | s.arg2 = arg2; | |
1448 | s.arg3 = arg3; | |
1449 | ||
1450 | if (callnum == TARGET_SYS_exit && current_cpu->m1threads == 0) | |
1451 | { | |
1452 | if (CPU_CRIS_MISC_PROFILE (current_cpu)->flags | |
1453 | & FLAG_CRIS_MISC_PROFILE_ALL) | |
1454 | dump_statistics (current_cpu); | |
1455 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1); | |
1456 | } | |
1457 | ||
1458 | s.p1 = (PTR) sd; | |
1459 | s.p2 = (PTR) current_cpu; | |
1460 | s.read_mem = syscall_read_mem; | |
1461 | s.write_mem = syscall_write_mem; | |
1462 | ||
1463 | current_cpu_for_cb_callback = current_cpu; | |
1464 | ||
1465 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1466 | { | |
1467 | abort (); | |
1468 | sim_io_eprintf (sd, "Break 13: invalid %d? Returned %ld\n", callnum, | |
1469 | s.result); | |
1470 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL); | |
1471 | } | |
1472 | ||
1473 | retval = s.result == -1 ? -s.errcode : s.result; | |
1474 | ||
1475 | if (s.errcode != 0 && s.errcode == cb_host_to_target_errno (cb, ENOSYS)) | |
1476 | { | |
1477 | /* If the generic simulator call said ENOSYS, then let's try the | |
1478 | ones we know ourselves. | |
1479 | ||
1480 | The convention is to provide *very limited* functionality on an | |
1481 | as-needed basis, only what's covered by the test-suite, tests | |
1482 | added when functionality changes and abort with a descriptive | |
1483 | message for *everything* else. Where there's no test-case, we | |
1484 | just abort. */ | |
1485 | switch (callnum) | |
1486 | { | |
1487 | case 0: | |
1488 | /* It's a pretty safe bet that the "old setup() system call" | |
1489 | number will not be re-used; we can't say the same for higher | |
1490 | numbers. We treat this simulator-generated call as "wait | |
1491 | forever"; we re-run this insn. The wait is ended by a | |
1492 | callback. Sanity check that this is the reason we got | |
1493 | here. */ | |
1494 | if (current_cpu->thread_data == NULL | |
1495 | || (current_cpu->thread_data[threadno].pipe_write_fd == 0)) | |
1496 | goto unimplemented_syscall; | |
1497 | ||
1498 | sim_pc_set (current_cpu, pc); | |
1499 | retval = arg1; | |
1500 | break; | |
1501 | ||
1502 | case TARGET_SYS_fcntl64: | |
1503 | case TARGET_SYS_fcntl: | |
ed1f044a | 1504 | switch (arg2) |
f6bcefef | 1505 | { |
ed1f044a | 1506 | case 1: |
f6bcefef HPN |
1507 | /* F_GETFD. |
1508 | Glibc checks stdin, stdout and stderr fd:s for | |
1509 | close-on-exec security sanity. We just need to provide a | |
1510 | OK return value. If we really need to have a | |
1511 | close-on-exec flag true, we could just do a real fcntl | |
1512 | here. */ | |
1513 | retval = 0; | |
ed1f044a HPN |
1514 | break; |
1515 | ||
1516 | case 2: | |
f6bcefef HPN |
1517 | /* F_SETFD. Just ignore attempts to set the close-on-exec |
1518 | flag. */ | |
1519 | retval = 0; | |
ed1f044a HPN |
1520 | break; |
1521 | ||
1522 | case 3: | |
1523 | /* F_GETFL. Check for the special case for open+fdopen. */ | |
1524 | if (current_cpu->last_syscall == TARGET_SYS_open | |
1525 | && arg1 == current_cpu->last_open_fd) | |
1526 | { | |
1527 | retval = current_cpu->last_open_flags & TARGET_O_ACCMODE; | |
1528 | break; | |
1529 | } | |
8b9b39f4 HPN |
1530 | else if (arg1 == 0) |
1531 | { | |
1532 | /* Because we can't freopen fd:s 0, 1, 2 to mean | |
1533 | something else than stdin, stdout and stderr | |
1534 | (sim/common/syscall.c:cb_syscall special cases fd | |
1535 | 0, 1 and 2), we know what flags that we can | |
1536 | sanely return for these fd:s. */ | |
1537 | retval = TARGET_O_RDONLY; | |
1538 | break; | |
1539 | } | |
1540 | else if (arg1 == 1 || arg1 == 2) | |
1541 | { | |
1542 | retval = TARGET_O_WRONLY; | |
1543 | break; | |
1544 | } | |
ed1f044a | 1545 | /* FALLTHROUGH */ |
ed1f044a | 1546 | default: |
466b1d33 HPN |
1547 | /* Nothing else is implemented. */ |
1548 | retval | |
1549 | = cris_unknown_syscall (current_cpu, pc, | |
1550 | "Unimplemented %s syscall " | |
1551 | "(fd: 0x%lx: cmd: 0x%lx arg: " | |
1552 | "0x%lx)\n", | |
1553 | callnum == TARGET_SYS_fcntl | |
1554 | ? "fcntl" : "fcntl64", | |
1555 | (unsigned long) (USI) arg1, | |
1556 | (unsigned long) (USI) arg2, | |
1557 | (unsigned long) (USI) arg3); | |
ed1f044a | 1558 | break; |
f6bcefef HPN |
1559 | } |
1560 | break; | |
1561 | ||
1562 | case TARGET_SYS_uname: | |
1563 | { | |
1564 | /* Fill in a few constants to appease glibc. */ | |
1565 | static const char sim_utsname[6][65] = | |
1566 | { | |
1567 | "Linux", | |
1568 | "sim-target", | |
1569 | "2.4.5", | |
1570 | TARGET_UTSNAME, | |
1571 | "cris", | |
1572 | "localdomain" | |
1573 | }; | |
1574 | ||
1575 | if ((s.write_mem) (cb, &s, arg1, (const char *) sim_utsname, | |
1576 | sizeof (sim_utsname)) | |
1577 | != sizeof (sim_utsname)) | |
1578 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
1579 | else | |
1580 | retval = 0; | |
1581 | break; | |
1582 | } | |
1583 | ||
1584 | case TARGET_SYS_geteuid32: | |
1585 | /* We tell the truth with these. Maybe we shouldn't, but it | |
1586 | should match the "stat" information. */ | |
1587 | retval = geteuid (); | |
1588 | break; | |
1589 | ||
1590 | case TARGET_SYS_getuid32: | |
1591 | retval = getuid (); | |
1592 | break; | |
1593 | ||
1594 | case TARGET_SYS_getegid32: | |
1595 | retval = getegid (); | |
1596 | break; | |
1597 | ||
1598 | case TARGET_SYS_getgid32: | |
1599 | retval = getgid (); | |
1600 | break; | |
1601 | ||
1602 | case TARGET_SYS_brk: | |
1603 | /* Most often, we just return the argument, like the Linux | |
1604 | kernel. */ | |
1605 | retval = arg1; | |
1606 | ||
1607 | if (arg1 == 0) | |
1608 | retval = current_cpu->endbrk; | |
1609 | else if (arg1 <= current_cpu->endmem) | |
1610 | current_cpu->endbrk = arg1; | |
1611 | else | |
1612 | { | |
1613 | USI new_end = (arg1 + 8191) & ~8191; | |
1614 | ||
1615 | /* If the simulator wants to brk more than a certain very | |
1616 | large amount, something is wrong. FIXME: Return an error | |
1617 | or abort? Have command-line selectable? */ | |
1618 | if (new_end - current_cpu->endmem > SIM_MAX_ALLOC_CHUNK) | |
1619 | { | |
1620 | current_cpu->endbrk = current_cpu->endmem; | |
1621 | retval = current_cpu->endmem; | |
1622 | break; | |
1623 | } | |
1624 | ||
1625 | sim_core_attach (sd, NULL, 0, access_read_write_exec, 0, | |
1626 | current_cpu->endmem, | |
1627 | new_end - current_cpu->endmem, | |
1628 | 0, NULL, NULL); | |
1629 | current_cpu->endbrk = arg1; | |
1630 | current_cpu->endmem = new_end; | |
1631 | } | |
1632 | break; | |
1633 | ||
1634 | case TARGET_SYS_getpid: | |
1635 | /* Correct until CLONE_THREAD is implemented. */ | |
1636 | retval = current_cpu->thread_data == NULL | |
1637 | ? TARGET_PID | |
1638 | : TARGET_PID + current_cpu->thread_data[threadno].threadid; | |
1639 | break; | |
1640 | ||
1641 | case TARGET_SYS_getppid: | |
1642 | /* Correct until CLONE_THREAD is implemented. */ | |
1643 | retval = current_cpu->thread_data == NULL | |
1644 | ? TARGET_PID - 1 | |
1645 | : (TARGET_PID | |
1646 | + current_cpu->thread_data[threadno].parent_threadid); | |
1647 | break; | |
1648 | ||
1649 | case TARGET_SYS_mmap2: | |
1650 | { | |
1651 | USI addr = arg1; | |
1652 | USI len = arg2; | |
1653 | USI prot = arg3; | |
1654 | USI flags = arg4; | |
1655 | USI fd = arg5; | |
1656 | USI pgoff = arg6; | |
1657 | ||
1658 | /* If the simulator wants to mmap more than the very large | |
1659 | limit, something is wrong. FIXME: Return an error or | |
1660 | abort? Have command-line selectable? */ | |
1661 | if (len > SIM_MAX_ALLOC_CHUNK) | |
1662 | { | |
1663 | retval = -cb_host_to_target_errno (cb, ENOMEM); | |
1664 | break; | |
1665 | } | |
1666 | ||
1667 | if ((prot != (TARGET_PROT_READ | TARGET_PROT_WRITE) | |
1668 | && (prot | |
1669 | != (TARGET_PROT_READ | |
1670 | | TARGET_PROT_WRITE | |
1671 | | TARGET_PROT_EXEC)) | |
c06ccdf1 | 1672 | && (prot != (TARGET_PROT_READ | TARGET_PROT_EXEC)) |
f6bcefef HPN |
1673 | && prot != TARGET_PROT_READ) |
1674 | || (flags != (TARGET_MAP_ANONYMOUS | TARGET_MAP_PRIVATE) | |
1675 | && flags != TARGET_MAP_PRIVATE | |
c06ccdf1 HPN |
1676 | && flags != (TARGET_MAP_ANONYMOUS |
1677 | | TARGET_MAP_PRIVATE | TARGET_MAP_FIXED) | |
1678 | && flags != (TARGET_MAP_PRIVATE | TARGET_MAP_FIXED) | |
f6bcefef | 1679 | && flags != TARGET_MAP_SHARED) |
c06ccdf1 HPN |
1680 | || (fd != (USI) -1 |
1681 | && prot != TARGET_PROT_READ | |
1682 | && prot != (TARGET_PROT_READ | TARGET_PROT_EXEC) | |
1683 | && prot != (TARGET_PROT_READ | TARGET_PROT_WRITE)) | |
1684 | || (fd == (USI) -1 && pgoff != 0) | |
1685 | || (fd != (USI) -1 && (flags & TARGET_MAP_ANONYMOUS)) | |
1686 | || ((flags & TARGET_MAP_FIXED) == 0 | |
1687 | && is_mapped (sd, ¤t_cpu->highest_mmapped_page, | |
1688 | addr, (len + 8191) & ~8191))) | |
f6bcefef | 1689 | { |
466b1d33 HPN |
1690 | retval |
1691 | = cris_unknown_syscall (current_cpu, pc, | |
1692 | "Unimplemented mmap2 call " | |
1693 | "(0x%lx, 0x%lx, 0x%lx, " | |
1694 | "0x%lx, 0x%lx, 0x%lx)\n", | |
1695 | (unsigned long) arg1, | |
1696 | (unsigned long) arg2, | |
1697 | (unsigned long) arg3, | |
1698 | (unsigned long) arg4, | |
1699 | (unsigned long) arg5, | |
1700 | (unsigned long) arg6); | |
f6bcefef HPN |
1701 | break; |
1702 | } | |
1703 | else if (fd != (USI) -1) | |
1704 | { | |
1705 | /* Map a file. */ | |
1706 | ||
1707 | USI newaddr; | |
1708 | USI pos; | |
1709 | ||
1710 | /* A non-aligned argument is allowed for files. */ | |
1711 | USI newlen = (len + 8191) & ~8191; | |
1712 | ||
c06ccdf1 HPN |
1713 | /* We only support read, read|exec, and read|write, |
1714 | which we should already have checked. Check again | |
1715 | anyway. */ | |
1716 | if (prot != TARGET_PROT_READ | |
1717 | && prot != (TARGET_PROT_READ | TARGET_PROT_EXEC) | |
1718 | && prot != (TARGET_PROT_READ | TARGET_PROT_WRITE)) | |
1719 | abort (); | |
1720 | ||
1721 | if ((flags & TARGET_MAP_FIXED) | |
1722 | && unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
1723 | addr, newlen) != 0) | |
f6bcefef HPN |
1724 | abort (); |
1725 | ||
1726 | newaddr | |
1727 | = create_map (sd, ¤t_cpu->highest_mmapped_page, addr, | |
1728 | newlen); | |
1729 | ||
1730 | if (newaddr >= (USI) -8191) | |
1731 | { | |
1732 | abort (); | |
1733 | retval = -cb_host_to_target_errno (cb, -(SI) newaddr); | |
1734 | break; | |
1735 | } | |
1736 | ||
c06ccdf1 HPN |
1737 | /* We were asked for MAP_FIXED, but couldn't. */ |
1738 | if ((flags & TARGET_MAP_FIXED) && newaddr != addr) | |
1739 | { | |
1740 | abort (); | |
1741 | unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
1742 | newaddr, newlen); | |
1743 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
1744 | break; | |
1745 | } | |
1746 | ||
f6bcefef HPN |
1747 | /* Find the current position in the file. */ |
1748 | s.func = TARGET_SYS_lseek; | |
1749 | s.arg1 = fd; | |
1750 | s.arg2 = 0; | |
1751 | s.arg3 = SEEK_CUR; | |
1752 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1753 | abort (); | |
1754 | pos = s.result; | |
1755 | ||
c06ccdf1 HPN |
1756 | if (s.result < 0) |
1757 | abort (); | |
1758 | ||
1759 | /* Move to the correct offset in the file. */ | |
1760 | s.func = TARGET_SYS_lseek; | |
1761 | s.arg1 = fd; | |
1762 | s.arg2 = pgoff*8192; | |
1763 | s.arg3 = SEEK_SET; | |
1764 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1765 | abort (); | |
1766 | ||
f6bcefef HPN |
1767 | if (s.result < 0) |
1768 | abort (); | |
1769 | ||
1770 | /* Use the standard read callback to read in "len" | |
1771 | bytes. */ | |
1772 | s.func = TARGET_SYS_read; | |
1773 | s.arg1 = fd; | |
1774 | s.arg2 = newaddr; | |
1775 | s.arg3 = len; | |
1776 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1777 | abort (); | |
1778 | ||
1779 | if ((USI) s.result != len) | |
1780 | abort (); | |
1781 | ||
1782 | /* After reading, we need to go back to the previous | |
1783 | position in the file. */ | |
1784 | s.func = TARGET_SYS_lseek; | |
1785 | s.arg1 = fd; | |
1786 | s.arg2 = pos; | |
1787 | s.arg3 = SEEK_SET; | |
1788 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1789 | abort (); | |
1790 | if (pos != (USI) s.result) | |
1791 | abort (); | |
1792 | ||
1793 | retval = newaddr; | |
1794 | } | |
1795 | else | |
1796 | { | |
c06ccdf1 HPN |
1797 | USI newlen = (len + 8191) & ~8191; |
1798 | USI newaddr; | |
1799 | ||
1800 | if ((flags & TARGET_MAP_FIXED) | |
1801 | && unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
1802 | addr, newlen) != 0) | |
1803 | abort (); | |
1804 | ||
1805 | newaddr = create_map (sd, ¤t_cpu->highest_mmapped_page, addr, | |
1806 | newlen); | |
f6bcefef HPN |
1807 | |
1808 | if (newaddr >= (USI) -8191) | |
1809 | retval = -cb_host_to_target_errno (cb, -(SI) newaddr); | |
1810 | else | |
1811 | retval = newaddr; | |
c06ccdf1 HPN |
1812 | |
1813 | if ((flags & TARGET_MAP_FIXED) && newaddr != addr) | |
1814 | { | |
1815 | abort (); | |
1816 | unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
1817 | newaddr, newlen); | |
1818 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
1819 | break; | |
1820 | } | |
f6bcefef HPN |
1821 | } |
1822 | break; | |
1823 | } | |
1824 | ||
1825 | case TARGET_SYS_mprotect: | |
1826 | { | |
c06ccdf1 HPN |
1827 | /* We only cover the case of linuxthreads mprotecting out |
1828 | its stack guard page and of dynamic loading mprotecting | |
1829 | away the data (for some reason the whole library, then | |
1830 | mprotects away the data part and mmap-FIX:es it again. */ | |
f6bcefef HPN |
1831 | USI addr = arg1; |
1832 | USI len = arg2; | |
1833 | USI prot = arg3; | |
1834 | ||
c06ccdf1 HPN |
1835 | if (prot != TARGET_PROT_NONE |
1836 | || !is_mapped_only (sd, ¤t_cpu->highest_mmapped_page, | |
1837 | addr, (len + 8191) & ~8191)) | |
f6bcefef | 1838 | { |
466b1d33 HPN |
1839 | retval |
1840 | = cris_unknown_syscall (current_cpu, pc, | |
1841 | "Unimplemented mprotect call " | |
1842 | "(0x%lx, 0x%lx, 0x%lx)\n", | |
1843 | (unsigned long) arg1, | |
1844 | (unsigned long) arg2, | |
1845 | (unsigned long) arg3); | |
f6bcefef HPN |
1846 | break; |
1847 | } | |
1848 | ||
c06ccdf1 HPN |
1849 | /* Just ignore this. We could make this equal to munmap, |
1850 | but then we'd have to make sure no anon mmaps gets this | |
1851 | address before a subsequent MAP_FIXED mmap intended to | |
1852 | override it. */ | |
f6bcefef HPN |
1853 | retval = 0; |
1854 | break; | |
1855 | } | |
1856 | ||
1857 | case TARGET_SYS_ioctl: | |
1858 | { | |
1859 | /* We support only a very limited functionality: checking | |
1860 | stdout with TCGETS to perform the isatty function. The | |
1861 | TCGETS ioctl isn't actually performed or the result used by | |
1862 | an isatty () caller in a "hello, world" program; only the | |
1863 | return value is then used. Maybe we shouldn't care about | |
1864 | the environment of the simulator regarding isatty, but | |
1865 | that's been working before, in the xsim simulator. */ | |
1866 | if (arg2 == TARGET_TCGETS && arg1 == 1) | |
1867 | retval = isatty (1) ? 0 : cb_host_to_target_errno (cb, EINVAL); | |
1868 | else | |
1869 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
1870 | break; | |
1871 | } | |
1872 | ||
1873 | case TARGET_SYS_munmap: | |
1874 | { | |
1875 | USI addr = arg1; | |
1876 | USI len = arg2; | |
1877 | USI result | |
1878 | = unmap_pages (sd, ¤t_cpu->highest_mmapped_page, addr, | |
1879 | len); | |
1880 | retval = result != 0 ? -cb_host_to_target_errno (cb, result) : 0; | |
1881 | break; | |
1882 | } | |
1883 | ||
1884 | case TARGET_SYS_wait4: | |
1885 | { | |
1886 | int i; | |
1887 | USI pid = arg1; | |
1888 | USI saddr = arg2; | |
1889 | USI options = arg3; | |
1890 | USI rusagep = arg4; | |
1891 | ||
1892 | /* FIXME: We're not properly implementing __WCLONE, and we | |
1893 | don't really need the special casing so we might as well | |
1894 | make this general. */ | |
1895 | if ((!(pid == (USI) -1 | |
1896 | && options == (TARGET___WCLONE | TARGET_WNOHANG) | |
1897 | && saddr != 0) | |
1898 | && !(pid > 0 | |
1899 | && (options == TARGET___WCLONE | |
1900 | || options == TARGET___WALL))) | |
1901 | || rusagep != 0 | |
1902 | || current_cpu->thread_data == NULL) | |
1903 | { | |
466b1d33 HPN |
1904 | retval |
1905 | = cris_unknown_syscall (current_cpu, pc, | |
1906 | "Unimplemented wait4 call " | |
1907 | "(0x%lx, 0x%lx, 0x%lx, 0x%lx)\n", | |
1908 | (unsigned long) arg1, | |
1909 | (unsigned long) arg2, | |
1910 | (unsigned long) arg3, | |
1911 | (unsigned long) arg4); | |
f6bcefef HPN |
1912 | break; |
1913 | } | |
1914 | ||
1915 | if (pid == (USI) -1) | |
1916 | for (i = 1; i < SIM_TARGET_MAX_THREADS; i++) | |
1917 | { | |
1918 | if (current_cpu->thread_data[threadno].threadid | |
1919 | == current_cpu->thread_data[i].parent_threadid | |
1920 | && current_cpu->thread_data[i].threadid != 0 | |
1921 | && current_cpu->thread_data[i].cpu_context == NULL) | |
1922 | { | |
1923 | /* A zombied child. Get the exit value and clear the | |
1924 | zombied entry so it will be reused. */ | |
1925 | sim_core_write_unaligned_4 (current_cpu, pc, 0, saddr, | |
1926 | current_cpu | |
1927 | ->thread_data[i].exitval); | |
1928 | retval | |
1929 | = current_cpu->thread_data[i].threadid + TARGET_PID; | |
1930 | memset (¤t_cpu->thread_data[i], 0, | |
1931 | sizeof (current_cpu->thread_data[i])); | |
1932 | goto outer_break; | |
1933 | } | |
1934 | } | |
1935 | else | |
1936 | { | |
1937 | /* We're waiting for a specific PID. If we don't find | |
1938 | it zombied on this run, rerun the syscall. */ | |
1939 | for (i = 1; i < SIM_TARGET_MAX_THREADS; i++) | |
1940 | if (pid == current_cpu->thread_data[i].threadid + TARGET_PID | |
1941 | && current_cpu->thread_data[i].cpu_context == NULL) | |
1942 | { | |
1943 | if (saddr != 0) | |
1944 | /* Get the exit value if the caller wants it. */ | |
1945 | sim_core_write_unaligned_4 (current_cpu, pc, 0, | |
1946 | saddr, | |
1947 | current_cpu | |
1948 | ->thread_data[i] | |
1949 | .exitval); | |
1950 | ||
1951 | retval | |
1952 | = current_cpu->thread_data[i].threadid + TARGET_PID; | |
1953 | memset (¤t_cpu->thread_data[i], 0, | |
1954 | sizeof (current_cpu->thread_data[i])); | |
1955 | ||
1956 | goto outer_break; | |
1957 | } | |
1958 | ||
1959 | sim_pc_set (current_cpu, pc); | |
1960 | } | |
1961 | ||
1962 | retval = -cb_host_to_target_errno (cb, ECHILD); | |
1963 | outer_break: | |
1964 | break; | |
1965 | } | |
1966 | ||
1967 | case TARGET_SYS_rt_sigaction: | |
1968 | { | |
1969 | USI signum = arg1; | |
1970 | USI old_sa = arg3; | |
1971 | USI new_sa = arg2; | |
1972 | ||
1973 | /* The kernel says: | |
1974 | struct sigaction { | |
1975 | __sighandler_t sa_handler; | |
1976 | unsigned long sa_flags; | |
1977 | void (*sa_restorer)(void); | |
1978 | sigset_t sa_mask; | |
1979 | }; */ | |
1980 | ||
1981 | if (old_sa != 0) | |
1982 | { | |
1983 | sim_core_write_unaligned_4 (current_cpu, pc, 0, old_sa + 0, | |
1984 | current_cpu->sighandler[signum]); | |
1985 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 4, 0); | |
1986 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 8, 0); | |
1987 | ||
1988 | /* We'll assume _NSIG_WORDS is 2 for the kernel. */ | |
1989 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 12, 0); | |
1990 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 16, 0); | |
1991 | } | |
1992 | if (new_sa != 0) | |
1993 | { | |
2ecb8390 | 1994 | USI target_sa_handler |
f6bcefef | 1995 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa); |
2ecb8390 | 1996 | USI target_sa_flags |
f6bcefef | 1997 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 4); |
2ecb8390 | 1998 | USI target_sa_restorer |
f6bcefef | 1999 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 8); |
2ecb8390 | 2000 | USI target_sa_mask_low |
f6bcefef | 2001 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 12); |
2ecb8390 | 2002 | USI target_sa_mask_high |
f6bcefef HPN |
2003 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 16); |
2004 | ||
2005 | /* We won't interrupt a syscall so we won't restart it, | |
2006 | but a signal(2) call ends up syscalling rt_sigaction | |
2007 | with this flag, so we have to handle it. The | |
2008 | sa_restorer field contains garbage when not | |
2009 | TARGET_SA_RESTORER, so don't look at it. For the | |
2010 | time being, we don't nest sighandlers, so we | |
2011 | ignore the sa_mask, which simplifies things. */ | |
2ecb8390 HPN |
2012 | if ((target_sa_flags != 0 |
2013 | && target_sa_flags != TARGET_SA_RESTART | |
2014 | && target_sa_flags != (TARGET_SA_RESTART|TARGET_SA_SIGINFO)) | |
2015 | || target_sa_handler == 0) | |
f6bcefef | 2016 | { |
466b1d33 HPN |
2017 | retval |
2018 | = cris_unknown_syscall (current_cpu, pc, | |
2019 | "Unimplemented rt_sigaction " | |
2020 | "syscall " | |
2021 | "(0x%lx, 0x%lx: " | |
2022 | "[0x%x, 0x%x, 0x%x, " | |
2023 | "{0x%x, 0x%x}], 0x%lx)\n", | |
2024 | (unsigned long) arg1, | |
2025 | (unsigned long) arg2, | |
2026 | target_sa_handler, | |
2027 | target_sa_flags, | |
2028 | target_sa_restorer, | |
2029 | target_sa_mask_low, | |
2030 | target_sa_mask_high, | |
2031 | (unsigned long) arg3); | |
2032 | break; | |
f6bcefef HPN |
2033 | } |
2034 | ||
2ecb8390 | 2035 | current_cpu->sighandler[signum] = target_sa_handler; |
f6bcefef HPN |
2036 | |
2037 | /* Because we may have unblocked signals, one may now be | |
2038 | pending, if there are threads, that is. */ | |
2039 | if (current_cpu->thread_data) | |
2040 | current_cpu->thread_data[threadno].sigpending = 1; | |
2041 | } | |
2042 | retval = 0; | |
2043 | break; | |
2044 | } | |
2045 | ||
2046 | case TARGET_SYS_mremap: | |
2047 | { | |
2048 | USI addr = arg1; | |
2049 | USI old_len = arg2; | |
2050 | USI new_len = arg3; | |
2051 | USI flags = arg4; | |
2052 | USI new_addr = arg5; | |
2053 | USI mapped_addr; | |
2054 | ||
2055 | if (new_len == old_len) | |
2056 | /* The program and/or library is possibly confused but | |
2057 | this is a valid call. Happens with ipps-1.40 on file | |
2058 | svs_all. */ | |
2059 | retval = addr; | |
2060 | else if (new_len < old_len) | |
2061 | { | |
2062 | /* Shrinking is easy. */ | |
2063 | if (unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
2064 | addr + new_len, old_len - new_len) != 0) | |
2065 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2066 | else | |
2067 | retval = addr; | |
2068 | } | |
2069 | else if (! is_mapped (sd, ¤t_cpu->highest_mmapped_page, | |
2070 | addr + old_len, new_len - old_len)) | |
2071 | { | |
2072 | /* If the extension isn't mapped, we can just add it. */ | |
2073 | mapped_addr | |
2074 | = create_map (sd, ¤t_cpu->highest_mmapped_page, | |
2075 | addr + old_len, new_len - old_len); | |
2076 | ||
2077 | if (mapped_addr > (USI) -8192) | |
2078 | retval = -cb_host_to_target_errno (cb, -(SI) mapped_addr); | |
2079 | else | |
2080 | retval = addr; | |
2081 | } | |
2082 | else if (flags & TARGET_MREMAP_MAYMOVE) | |
2083 | { | |
2084 | /* Create a whole new map and copy the contents | |
2085 | block-by-block there. We ignore the new_addr argument | |
2086 | for now. */ | |
2087 | char buf[8192]; | |
2088 | USI prev_addr = addr; | |
2089 | USI prev_len = old_len; | |
2090 | ||
2091 | mapped_addr | |
2092 | = create_map (sd, ¤t_cpu->highest_mmapped_page, | |
2093 | 0, new_len); | |
2094 | ||
2095 | if (mapped_addr > (USI) -8192) | |
2096 | { | |
2097 | retval = -cb_host_to_target_errno (cb, -(SI) new_addr); | |
2098 | break; | |
2099 | } | |
2100 | ||
2101 | retval = mapped_addr; | |
2102 | ||
2103 | for (; old_len > 0; | |
2104 | old_len -= 8192, mapped_addr += 8192, addr += 8192) | |
2105 | { | |
2106 | if (sim_core_read_buffer (sd, current_cpu, read_map, buf, | |
2107 | addr, 8192) != 8192 | |
2108 | || sim_core_write_buffer (sd, current_cpu, 0, buf, | |
2109 | mapped_addr, 8192) != 8192) | |
2110 | abort (); | |
2111 | } | |
2112 | ||
2113 | if (unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
2114 | prev_addr, prev_len) != 0) | |
2115 | abort (); | |
2116 | } | |
2117 | else | |
2118 | retval = -cb_host_to_target_errno (cb, -ENOMEM); | |
2119 | break; | |
2120 | } | |
2121 | ||
2122 | case TARGET_SYS_poll: | |
2123 | { | |
2124 | int npollfds = arg2; | |
2125 | int timeout = arg3; | |
2126 | SI ufds = arg1; | |
2127 | SI fd = -1; | |
2128 | HI events = -1; | |
2129 | HI revents = 0; | |
2130 | struct stat buf; | |
2131 | int i; | |
2132 | ||
2133 | /* The kernel says: | |
2134 | struct pollfd { | |
2135 | int fd; | |
2136 | short events; | |
2137 | short revents; | |
2138 | }; */ | |
2139 | ||
2140 | /* Check that this is the expected poll call from | |
2141 | linuxthreads/manager.c; we don't support anything else. | |
2142 | Remember, fd == 0 isn't supported. */ | |
2143 | if (npollfds != 1 | |
2144 | || ((fd = sim_core_read_unaligned_4 (current_cpu, pc, | |
2145 | 0, ufds)) <= 0) | |
2146 | || ((events = sim_core_read_unaligned_2 (current_cpu, pc, | |
2147 | 0, ufds + 4)) | |
2148 | != TARGET_POLLIN) | |
2149 | || ((cb->fstat) (cb, fd, &buf) != 0 | |
2150 | || (buf.st_mode & S_IFIFO) == 0) | |
2151 | || current_cpu->thread_data == NULL) | |
2152 | { | |
466b1d33 HPN |
2153 | retval |
2154 | = cris_unknown_syscall (current_cpu, pc, | |
2155 | "Unimplemented poll syscall " | |
2156 | "(0x%lx: [0x%x, 0x%x, x], " | |
2157 | "0x%lx, 0x%lx)\n", | |
2158 | (unsigned long) arg1, fd, events, | |
2159 | (unsigned long) arg2, | |
2160 | (unsigned long) arg3); | |
f6bcefef HPN |
2161 | break; |
2162 | } | |
2163 | ||
2164 | retval = 0; | |
2165 | ||
2166 | /* Iterate over threads; find a marker that a writer is | |
2167 | sleeping, waiting for a reader. */ | |
2168 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
2169 | if (current_cpu->thread_data[i].cpu_context != NULL | |
2170 | && current_cpu->thread_data[i].pipe_read_fd == fd) | |
2171 | { | |
2172 | revents = TARGET_POLLIN; | |
2173 | retval = 1; | |
2174 | break; | |
2175 | } | |
2176 | ||
2177 | /* Timeout decreases with whatever time passed between the | |
2178 | last syscall and this. That's not exactly right for the | |
2179 | first call, but it's close enough that it isn't | |
2180 | worthwhile to complicate matters by making that a special | |
2181 | case. */ | |
2182 | timeout | |
2183 | -= (TARGET_TIME_MS (current_cpu) | |
2184 | - (current_cpu->thread_data[threadno].last_execution)); | |
2185 | ||
2186 | /* Arrange to repeat this syscall until timeout or event, | |
2187 | decreasing timeout at each iteration. */ | |
2188 | if (timeout > 0 && revents == 0) | |
2189 | { | |
2190 | bfd_byte timeout_buf[4]; | |
2191 | ||
2192 | bfd_putl32 (timeout, timeout_buf); | |
2193 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
2194 | H_GR_R12, timeout_buf, 4); | |
2195 | sim_pc_set (current_cpu, pc); | |
2196 | retval = arg1; | |
2197 | break; | |
2198 | } | |
2199 | ||
2200 | sim_core_write_unaligned_2 (current_cpu, pc, 0, ufds + 4 + 2, | |
2201 | revents); | |
2202 | break; | |
2203 | } | |
2204 | ||
d022998d HPN |
2205 | case TARGET_SYS_time: |
2206 | { | |
2207 | retval = (int) (*cb->time) (cb, 0L); | |
2208 | ||
2209 | /* At time of this writing, CB_SYSCALL_time doesn't do the | |
2210 | part of setting *arg1 to the return value. */ | |
2211 | if (arg1) | |
2212 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1, retval); | |
2213 | break; | |
2214 | } | |
2215 | ||
f6bcefef HPN |
2216 | case TARGET_SYS_gettimeofday: |
2217 | if (arg1 != 0) | |
2218 | { | |
2219 | USI ts = TARGET_TIME (current_cpu); | |
2220 | USI tms = TARGET_TIME_MS (current_cpu); | |
2221 | ||
2222 | /* First dword is seconds since TARGET_EPOCH. */ | |
2223 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1, ts); | |
2224 | ||
2225 | /* Second dword is microseconds. */ | |
2226 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1 + 4, | |
2227 | (tms % 1000) * 1000); | |
2228 | } | |
2229 | if (arg2 != 0) | |
2230 | { | |
2231 | /* Time-zone info is always cleared. */ | |
2232 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2, 0); | |
2233 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2 + 4, 0); | |
2234 | } | |
2235 | retval = 0; | |
2236 | break; | |
2237 | ||
2238 | case TARGET_SYS_llseek: | |
2239 | { | |
2240 | /* If it fits, tweak parameters to fit the "generic" 32-bit | |
2241 | lseek and use that. */ | |
2242 | SI fd = arg1; | |
2243 | SI offs_hi = arg2; | |
2244 | SI offs_lo = arg3; | |
2245 | SI resultp = arg4; | |
2246 | SI whence = arg5; | |
2247 | retval = 0; | |
2248 | ||
2249 | if (!((offs_hi == 0 && offs_lo >= 0) | |
2250 | || (offs_hi == -1 && offs_lo < 0))) | |
2251 | { | |
466b1d33 HPN |
2252 | retval |
2253 | = cris_unknown_syscall (current_cpu, pc, | |
2254 | "Unimplemented llseek offset," | |
2255 | " fd %d: 0x%x:0x%x\n", | |
2256 | fd, (unsigned) arg2, | |
2257 | (unsigned) arg3); | |
2258 | break; | |
f6bcefef HPN |
2259 | } |
2260 | ||
2261 | s.func = TARGET_SYS_lseek; | |
2262 | s.arg2 = offs_lo; | |
2263 | s.arg3 = whence; | |
2264 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
2265 | { | |
2266 | sim_io_eprintf (sd, "Break 13: invalid %d? Returned %ld\n", callnum, | |
2267 | s.result); | |
2268 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL); | |
2269 | } | |
2270 | if (s.result < 0) | |
2271 | retval = -s.errcode; | |
2272 | else | |
2273 | { | |
2274 | sim_core_write_unaligned_4 (current_cpu, pc, 0, resultp, | |
2275 | s.result); | |
2276 | sim_core_write_unaligned_4 (current_cpu, pc, 0, resultp + 4, | |
2277 | s.result < 0 ? -1 : 0); | |
2278 | } | |
2279 | break; | |
2280 | } | |
2281 | ||
c06ccdf1 HPN |
2282 | /* ssize_t writev(int fd, const struct iovec *iov, int iovcnt); |
2283 | where: | |
2284 | struct iovec { | |
2285 | void *iov_base; Starting address | |
2286 | size_t iov_len; Number of bytes to transfer | |
2287 | }; */ | |
2288 | case TARGET_SYS_writev: | |
2289 | { | |
2290 | SI fd = arg1; | |
2291 | SI iov = arg2; | |
2292 | SI iovcnt = arg3; | |
2293 | SI retcnt = 0; | |
2294 | int i; | |
2295 | ||
2296 | /* We'll ignore strict error-handling and just do multiple write calls. */ | |
2297 | for (i = 0; i < iovcnt; i++) | |
2298 | { | |
2299 | int sysret; | |
2300 | USI iov_base | |
2301 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2302 | iov + 8*i); | |
2303 | USI iov_len | |
2304 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2305 | iov + 8*i + 4); | |
2306 | ||
2307 | s.func = TARGET_SYS_write; | |
2308 | s.arg1 = fd; | |
2309 | s.arg2 = iov_base; | |
2310 | s.arg3 = iov_len; | |
2311 | ||
2312 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
2313 | abort (); | |
2314 | sysret = s.result == -1 ? -s.errcode : s.result; | |
2315 | ||
2316 | if (sysret != iov_len) | |
2317 | { | |
2318 | if (i != 0) | |
2319 | abort (); | |
2320 | retcnt = sysret; | |
2321 | break; | |
2322 | } | |
2323 | ||
2324 | retcnt += iov_len; | |
2325 | } | |
2326 | ||
2327 | retval = retcnt; | |
2328 | } | |
2329 | break; | |
2330 | ||
f6bcefef HPN |
2331 | /* This one does have a generic callback function, but at the time |
2332 | of this writing, cb_syscall does not have code for it, and we | |
2333 | need target-specific code for the threads implementation | |
2334 | anyway. */ | |
2335 | case TARGET_SYS_kill: | |
2336 | { | |
2337 | USI pid = arg1; | |
2338 | USI sig = arg2; | |
2339 | ||
2340 | retval = 0; | |
2341 | ||
2342 | /* At kill(2), glibc sets signal masks such that the thread | |
2343 | machinery is initialized. Still, there is and was only | |
2344 | one thread. */ | |
2345 | if (current_cpu->max_threadid == 0) | |
2346 | { | |
2347 | if (pid != TARGET_PID) | |
2348 | { | |
2349 | retval = -cb_host_to_target_errno (cb, EPERM); | |
2350 | break; | |
2351 | } | |
2352 | ||
2353 | /* FIXME: Signal infrastructure (target-to-sim mapping). */ | |
2354 | if (sig == TARGET_SIGABRT) | |
2355 | /* A call "abort ()", i.e. "kill (getpid(), SIGABRT)" is | |
2356 | the end-point for failing GCC test-cases. */ | |
2357 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2358 | SIM_SIGABRT); | |
2359 | else | |
2360 | { | |
2361 | sim_io_eprintf (sd, "Unimplemented signal: %d\n", sig); | |
2362 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2363 | SIM_SIGILL); | |
2364 | } | |
2365 | ||
2366 | /* This will not be reached. */ | |
2367 | abort (); | |
2368 | } | |
2369 | else | |
2370 | retval = deliver_signal (current_cpu, sig, pid); | |
2371 | break; | |
2372 | } | |
2373 | ||
2374 | case TARGET_SYS_rt_sigprocmask: | |
2375 | { | |
2376 | int i; | |
2377 | USI how = arg1; | |
2378 | USI newsetp = arg2; | |
2379 | USI oldsetp = arg3; | |
2380 | ||
2381 | if (how != TARGET_SIG_BLOCK | |
2382 | && how != TARGET_SIG_SETMASK | |
2383 | && how != TARGET_SIG_UNBLOCK) | |
2384 | { | |
466b1d33 HPN |
2385 | retval |
2386 | = cris_unknown_syscall (current_cpu, pc, | |
2387 | "Unimplemented rt_sigprocmask " | |
2388 | "syscall (0x%x, 0x%x, 0x%x)\n", | |
2389 | arg1, arg2, arg3); | |
f6bcefef HPN |
2390 | break; |
2391 | } | |
2392 | ||
2393 | if (newsetp) | |
2394 | { | |
2395 | USI set_low | |
2396 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2397 | newsetp); | |
2398 | USI set_high | |
2399 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2400 | newsetp + 4); | |
2401 | ||
2402 | /* The sigmask is kept in the per-thread data, so we may | |
2403 | need to create the first one. */ | |
2404 | if (current_cpu->thread_data == NULL) | |
2405 | make_first_thread (current_cpu); | |
2406 | ||
2407 | if (how == TARGET_SIG_SETMASK) | |
2408 | for (i = 0; i < 64; i++) | |
2409 | current_cpu->thread_data[threadno].sigdata[i].blocked = 0; | |
2410 | ||
2411 | for (i = 0; i < 32; i++) | |
2412 | if ((set_low & (1 << i))) | |
2413 | current_cpu->thread_data[threadno].sigdata[i + 1].blocked | |
2414 | = (how != TARGET_SIG_UNBLOCK); | |
2415 | ||
2416 | for (i = 0; i < 31; i++) | |
2417 | if ((set_high & (1 << i))) | |
2418 | current_cpu->thread_data[threadno].sigdata[i + 33].blocked | |
2419 | = (how != TARGET_SIG_UNBLOCK); | |
2420 | ||
2421 | /* The mask changed, so a signal may be unblocked for | |
2422 | execution. */ | |
2423 | current_cpu->thread_data[threadno].sigpending = 1; | |
2424 | } | |
2425 | ||
2426 | if (oldsetp != 0) | |
2427 | { | |
2428 | USI set_low = 0; | |
2429 | USI set_high = 0; | |
2430 | ||
2431 | for (i = 0; i < 32; i++) | |
2432 | if (current_cpu->thread_data[threadno] | |
2433 | .sigdata[i + 1].blocked) | |
2434 | set_low |= 1 << i; | |
2435 | for (i = 0; i < 31; i++) | |
2436 | if (current_cpu->thread_data[threadno] | |
2437 | .sigdata[i + 33].blocked) | |
2438 | set_high |= 1 << i; | |
2439 | ||
2440 | sim_core_write_unaligned_4 (current_cpu, pc, 0, oldsetp + 0, set_low); | |
2441 | sim_core_write_unaligned_4 (current_cpu, pc, 0, oldsetp + 4, set_high); | |
2442 | } | |
2443 | ||
2444 | retval = 0; | |
2445 | break; | |
2446 | } | |
2447 | ||
2448 | case TARGET_SYS_sigreturn: | |
2449 | { | |
2450 | int i; | |
2451 | bfd_byte regbuf[4]; | |
2452 | int was_sigsuspended; | |
2453 | ||
2454 | if (current_cpu->thread_data == NULL | |
2455 | /* The CPU context is saved with the simulator data, not | |
2456 | on the stack as in the real world. */ | |
2457 | || (current_cpu->thread_data[threadno].cpu_context_atsignal | |
2458 | == NULL)) | |
2459 | { | |
466b1d33 HPN |
2460 | retval |
2461 | = cris_unknown_syscall (current_cpu, pc, | |
2462 | "Invalid sigreturn syscall: " | |
2463 | "no signal handler active " | |
2464 | "(0x%lx, 0x%lx, 0x%lx, 0x%lx, " | |
2465 | "0x%lx, 0x%lx)\n", | |
2466 | (unsigned long) arg1, | |
2467 | (unsigned long) arg2, | |
2468 | (unsigned long) arg3, | |
2469 | (unsigned long) arg4, | |
2470 | (unsigned long) arg5, | |
2471 | (unsigned long) arg6); | |
2472 | break; | |
f6bcefef HPN |
2473 | } |
2474 | ||
2475 | was_sigsuspended | |
2476 | = current_cpu->thread_data[threadno].sigsuspended; | |
2477 | ||
2478 | /* Restore the sigmask, either from the stack copy made when | |
2479 | the sighandler was called, or from the saved state | |
2480 | specifically for sigsuspend(2). */ | |
2481 | if (was_sigsuspended) | |
2482 | { | |
2483 | current_cpu->thread_data[threadno].sigsuspended = 0; | |
2484 | for (i = 0; i < 64; i++) | |
2485 | current_cpu->thread_data[threadno].sigdata[i].blocked | |
2486 | = current_cpu->thread_data[threadno] | |
2487 | .sigdata[i].blocked_suspendsave; | |
2488 | } | |
2489 | else | |
2490 | { | |
2491 | USI sp; | |
2492 | USI set_low; | |
2493 | USI set_high; | |
2494 | ||
2495 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, | |
2496 | H_GR_SP, regbuf, 4); | |
2497 | sp = bfd_getl32 (regbuf); | |
2498 | set_low | |
2499 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, sp); | |
2500 | set_high | |
2501 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, sp + 4); | |
2502 | ||
2503 | for (i = 0; i < 32; i++) | |
2504 | current_cpu->thread_data[threadno].sigdata[i + 1].blocked | |
2505 | = (set_low & (1 << i)) != 0; | |
2506 | for (i = 0; i < 31; i++) | |
2507 | current_cpu->thread_data[threadno].sigdata[i + 33].blocked | |
2508 | = (set_high & (1 << i)) != 0; | |
2509 | } | |
2510 | ||
2511 | /* The mask changed, so a signal may be unblocked for | |
2512 | execution. */ | |
2513 | current_cpu->thread_data[threadno].sigpending = 1; | |
2514 | ||
2515 | memcpy (¤t_cpu->cpu_data_placeholder, | |
2516 | current_cpu->thread_data[threadno].cpu_context_atsignal, | |
2517 | current_cpu->thread_cpu_data_size); | |
2518 | free (current_cpu->thread_data[threadno].cpu_context_atsignal); | |
2519 | current_cpu->thread_data[threadno].cpu_context_atsignal = NULL; | |
2520 | ||
2521 | /* The return value must come from the saved R10. */ | |
2522 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_R10, regbuf, 4); | |
2523 | retval = bfd_getl32 (regbuf); | |
2524 | ||
2525 | /* We must also break the "sigsuspension loop". */ | |
2526 | if (was_sigsuspended) | |
2527 | sim_pc_set (current_cpu, sim_pc_get (current_cpu) + 2); | |
2528 | break; | |
2529 | } | |
2530 | ||
2531 | case TARGET_SYS_rt_sigsuspend: | |
2532 | { | |
2533 | USI newsetp = arg1; | |
2534 | USI setsize = arg2; | |
2535 | ||
2536 | if (setsize != 8) | |
2537 | { | |
466b1d33 HPN |
2538 | retval |
2539 | = cris_unknown_syscall (current_cpu, pc, | |
2540 | "Unimplemented rt_sigsuspend syscall" | |
2541 | " arguments (0x%lx, 0x%lx)\n", | |
2542 | (unsigned long) arg1, | |
2543 | (unsigned long) arg2); | |
2544 | break; | |
f6bcefef HPN |
2545 | } |
2546 | ||
2547 | /* Don't change the signal mask if we're already in | |
2548 | sigsuspend state (i.e. this syscall is a rerun). */ | |
2549 | else if (!current_cpu->thread_data[threadno].sigsuspended) | |
2550 | { | |
2551 | USI set_low | |
2552 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2553 | newsetp); | |
2554 | USI set_high | |
2555 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2556 | newsetp + 4); | |
2557 | int i; | |
2558 | ||
2559 | /* Save the current sigmask and insert the user-supplied | |
2560 | one. */ | |
2561 | for (i = 0; i < 32; i++) | |
2562 | { | |
2563 | current_cpu->thread_data[threadno] | |
2564 | .sigdata[i + 1].blocked_suspendsave | |
2565 | = current_cpu->thread_data[threadno] | |
2566 | .sigdata[i + 1].blocked; | |
2567 | ||
2568 | current_cpu->thread_data[threadno] | |
2569 | .sigdata[i + 1].blocked = (set_low & (1 << i)) != 0; | |
2570 | } | |
2571 | for (i = 0; i < 31; i++) | |
2572 | { | |
2573 | current_cpu->thread_data[threadno] | |
2574 | .sigdata[i + 33].blocked_suspendsave | |
2575 | = current_cpu->thread_data[threadno] | |
2576 | .sigdata[i + 33].blocked; | |
2577 | current_cpu->thread_data[threadno] | |
2578 | .sigdata[i + 33].blocked = (set_high & (1 << i)) != 0; | |
2579 | } | |
2580 | ||
2581 | current_cpu->thread_data[threadno].sigsuspended = 1; | |
2582 | ||
2583 | /* The mask changed, so a signal may be unblocked for | |
2584 | execution. */ | |
2585 | current_cpu->thread_data[threadno].sigpending = 1; | |
2586 | } | |
2587 | ||
2588 | /* Because we don't use arg1 (newsetp) when this syscall is | |
2589 | rerun, it doesn't matter that we overwrite it with the | |
2590 | (constant) return value. */ | |
2591 | retval = -cb_host_to_target_errno (cb, EINTR); | |
2592 | sim_pc_set (current_cpu, pc); | |
2593 | break; | |
2594 | } | |
2595 | ||
2596 | /* Add case labels here for other syscalls using the 32-bit | |
2597 | "struct stat", provided they have a corresponding simulator | |
2598 | function of course. */ | |
5457266c | 2599 | case TARGET_SYS_stat: |
f6bcefef HPN |
2600 | case TARGET_SYS_fstat: |
2601 | { | |
2602 | /* As long as the infrastructure doesn't cache anything | |
2603 | related to the stat mapping, this trick gets us a dual | |
2604 | "struct stat"-type mapping in the least error-prone way. */ | |
2605 | const char *saved_map = cb->stat_map; | |
2606 | CB_TARGET_DEFS_MAP *saved_syscall_map = cb->syscall_map; | |
2607 | ||
2608 | cb->syscall_map = (CB_TARGET_DEFS_MAP *) syscall_stat32_map; | |
2609 | cb->stat_map = stat32_map; | |
2610 | ||
2611 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
2612 | { | |
2613 | abort (); | |
2614 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2615 | SIM_SIGILL); | |
2616 | } | |
2617 | retval = s.result == -1 ? -s.errcode : s.result; | |
2618 | ||
2619 | cb->stat_map = saved_map; | |
2620 | cb->syscall_map = saved_syscall_map; | |
2621 | break; | |
2622 | } | |
2623 | ||
2624 | case TARGET_SYS_getcwd: | |
2625 | { | |
2626 | USI buf = arg1; | |
2627 | USI size = arg2; | |
2628 | ||
3ca4d560 HPN |
2629 | char *cwd = xmalloc (SIM_PATHMAX); |
2630 | if (cwd != getcwd (cwd, SIM_PATHMAX)) | |
f6bcefef HPN |
2631 | abort (); |
2632 | ||
2633 | /* FIXME: When and if we support chdir, we need something | |
2634 | a bit more elaborate. */ | |
2635 | if (simulator_sysroot[0] != '\0') | |
2636 | strcpy (cwd, "/"); | |
2637 | ||
2638 | retval = -cb_host_to_target_errno (cb, ERANGE); | |
2639 | if (strlen (cwd) + 1 <= size) | |
2640 | { | |
2641 | retval = strlen (cwd) + 1; | |
2642 | if (sim_core_write_buffer (sd, current_cpu, 0, cwd, | |
2643 | buf, retval) | |
2644 | != (unsigned int) retval) | |
2645 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
2646 | } | |
2647 | free (cwd); | |
2648 | break; | |
2649 | } | |
2650 | ||
2651 | case TARGET_SYS_readlink: | |
2652 | { | |
2653 | SI path = arg1; | |
2654 | SI buf = arg2; | |
2655 | SI bufsiz = arg3; | |
3ca4d560 HPN |
2656 | char *pbuf = xmalloc (SIM_PATHMAX); |
2657 | char *lbuf = xmalloc (SIM_PATHMAX); | |
f6bcefef HPN |
2658 | char *lbuf_alloc = lbuf; |
2659 | int nchars = -1; | |
2660 | int i; | |
2661 | int o = 0; | |
2662 | ||
2663 | if (sim_core_read_unaligned_1 (current_cpu, pc, 0, path) == '/') | |
2664 | { | |
2665 | strcpy (pbuf, simulator_sysroot); | |
2666 | o += strlen (simulator_sysroot); | |
2667 | } | |
2668 | ||
3ca4d560 | 2669 | for (i = 0; i + o < SIM_PATHMAX; i++) |
f6bcefef HPN |
2670 | { |
2671 | pbuf[i + o] | |
2672 | = sim_core_read_unaligned_1 (current_cpu, pc, 0, path + i); | |
2673 | if (pbuf[i + o] == 0) | |
2674 | break; | |
2675 | } | |
2676 | ||
3ca4d560 | 2677 | if (i + o == SIM_PATHMAX) |
f6bcefef HPN |
2678 | { |
2679 | retval = -cb_host_to_target_errno (cb, ENAMETOOLONG); | |
2680 | break; | |
2681 | } | |
2682 | ||
2683 | /* Intervene calls for certain files expected in the target | |
2684 | proc file system. */ | |
2685 | if (strcmp (pbuf + strlen (simulator_sysroot), | |
2686 | "/proc/" XSTRING (TARGET_PID) "/exe") == 0) | |
2687 | { | |
2688 | char *argv0 | |
2689 | = (STATE_PROG_ARGV (sd) != NULL | |
2690 | ? *STATE_PROG_ARGV (sd) : NULL); | |
2691 | ||
2692 | if (argv0 == NULL || *argv0 == '.') | |
2693 | { | |
466b1d33 HPN |
2694 | retval |
2695 | = cris_unknown_syscall (current_cpu, pc, | |
2696 | "Unimplemented readlink syscall " | |
2697 | "(0x%lx: [\"%s\"], 0x%lx)\n", | |
2698 | (unsigned long) arg1, pbuf, | |
2699 | (unsigned long) arg2); | |
f6bcefef HPN |
2700 | break; |
2701 | } | |
2702 | else if (*argv0 == '/') | |
2703 | { | |
2704 | if (strncmp (simulator_sysroot, argv0, | |
2705 | strlen (simulator_sysroot)) == 0) | |
2706 | argv0 += strlen (simulator_sysroot); | |
2707 | ||
2708 | strcpy (lbuf, argv0); | |
2709 | nchars = strlen (argv0) + 1; | |
2710 | } | |
2711 | else | |
2712 | { | |
3ca4d560 HPN |
2713 | if (getcwd (lbuf, SIM_PATHMAX) != NULL |
2714 | && strlen (lbuf) + 2 + strlen (argv0) < SIM_PATHMAX) | |
f6bcefef HPN |
2715 | { |
2716 | if (strncmp (simulator_sysroot, lbuf, | |
2717 | strlen (simulator_sysroot)) == 0) | |
2718 | lbuf += strlen (simulator_sysroot); | |
2719 | ||
2720 | strcat (lbuf, "/"); | |
2721 | strcat (lbuf, argv0); | |
2722 | nchars = strlen (lbuf) + 1; | |
2723 | } | |
2724 | else | |
2725 | abort (); | |
2726 | } | |
2727 | } | |
2728 | else | |
3ca4d560 | 2729 | nchars = readlink (pbuf, lbuf, SIM_PATHMAX); |
f6bcefef HPN |
2730 | |
2731 | /* We trust that the readlink result returns a *relative* | |
2732 | link, or one already adjusted for the file-path-prefix. | |
2733 | (We can't generally tell the difference, so we go with | |
2734 | the easiest decision; no adjustment.) */ | |
2735 | ||
2736 | if (nchars == -1) | |
2737 | { | |
2738 | retval = -cb_host_to_target_errno (cb, errno); | |
2739 | break; | |
2740 | } | |
2741 | ||
2742 | if (bufsiz < nchars) | |
2743 | nchars = bufsiz; | |
2744 | ||
2745 | if (sim_core_write_buffer (sd, current_cpu, write_map, lbuf, | |
2746 | buf, nchars) != (unsigned int) nchars) | |
2747 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
2748 | else | |
2749 | retval = nchars; | |
2750 | ||
2751 | free (pbuf); | |
2752 | free (lbuf_alloc); | |
2753 | break; | |
2754 | } | |
2755 | ||
2756 | case TARGET_SYS_sched_getscheduler: | |
2757 | { | |
2758 | USI pid = arg1; | |
2759 | ||
2760 | /* FIXME: Search (other) existing threads. */ | |
2761 | if (pid != 0 && pid != TARGET_PID) | |
2762 | retval = -cb_host_to_target_errno (cb, ESRCH); | |
2763 | else | |
2764 | retval = TARGET_SCHED_OTHER; | |
2765 | break; | |
2766 | } | |
2767 | ||
2768 | case TARGET_SYS_sched_getparam: | |
2769 | { | |
2770 | USI pid = arg1; | |
2771 | USI paramp = arg2; | |
2772 | ||
2773 | /* The kernel says: | |
2774 | struct sched_param { | |
2775 | int sched_priority; | |
2776 | }; */ | |
2777 | ||
2778 | if (pid != 0 && pid != TARGET_PID) | |
2779 | retval = -cb_host_to_target_errno (cb, ESRCH); | |
2780 | else | |
2781 | { | |
2782 | /* FIXME: Save scheduler setting before threads are | |
2783 | created too. */ | |
2784 | sim_core_write_unaligned_4 (current_cpu, pc, 0, paramp, | |
2785 | current_cpu->thread_data != NULL | |
2786 | ? (current_cpu | |
2787 | ->thread_data[threadno] | |
2788 | .priority) | |
2789 | : 0); | |
2790 | retval = 0; | |
2791 | } | |
2792 | break; | |
2793 | } | |
2794 | ||
2795 | case TARGET_SYS_sched_setparam: | |
2796 | { | |
2797 | USI pid = arg1; | |
2798 | USI paramp = arg2; | |
2799 | ||
2800 | if ((pid != 0 && pid != TARGET_PID) | |
2801 | || sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2802 | paramp) != 0) | |
2803 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2804 | else | |
2805 | retval = 0; | |
2806 | break; | |
2807 | } | |
2808 | ||
2809 | case TARGET_SYS_sched_setscheduler: | |
2810 | { | |
2811 | USI pid = arg1; | |
2812 | USI policy = arg2; | |
2813 | USI paramp = arg3; | |
2814 | ||
2815 | if ((pid != 0 && pid != TARGET_PID) | |
2816 | || policy != TARGET_SCHED_OTHER | |
2817 | || sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2818 | paramp) != 0) | |
2819 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2820 | else | |
2821 | /* FIXME: Save scheduler setting to be read in later | |
2822 | sched_getparam calls. */ | |
2823 | retval = 0; | |
2824 | break; | |
2825 | } | |
2826 | ||
2827 | case TARGET_SYS_sched_yield: | |
2828 | /* We reschedule to the next thread after a syscall anyway, so | |
2829 | we don't have to do anything here than to set the return | |
2830 | value. */ | |
2831 | retval = 0; | |
2832 | break; | |
2833 | ||
2834 | case TARGET_SYS_sched_get_priority_min: | |
2835 | case TARGET_SYS_sched_get_priority_max: | |
2836 | if (arg1 != 0) | |
2837 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2838 | else | |
2839 | retval = 0; | |
2840 | break; | |
2841 | ||
2842 | case TARGET_SYS_ugetrlimit: | |
2843 | { | |
2844 | unsigned int curlim, maxlim; | |
2845 | if (arg1 != TARGET_RLIMIT_STACK && arg1 != TARGET_RLIMIT_NOFILE) | |
2846 | { | |
2847 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2848 | break; | |
2849 | } | |
2850 | ||
2851 | /* The kernel says: | |
2852 | struct rlimit { | |
2853 | unsigned long rlim_cur; | |
2854 | unsigned long rlim_max; | |
2855 | }; */ | |
2856 | if (arg1 == TARGET_RLIMIT_NOFILE) | |
2857 | { | |
2858 | /* Sadly a very low limit. Better not lie, though. */ | |
2859 | maxlim = curlim = MAX_CALLBACK_FDS; | |
2860 | } | |
2861 | else /* arg1 == TARGET_RLIMIT_STACK */ | |
2862 | { | |
2863 | maxlim = 0xffffffff; | |
2864 | curlim = 0x800000; | |
2865 | } | |
2866 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2, curlim); | |
2867 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2 + 4, maxlim); | |
2868 | retval = 0; | |
2869 | break; | |
2870 | } | |
2871 | ||
2872 | case TARGET_SYS_setrlimit: | |
2873 | if (arg1 != TARGET_RLIMIT_STACK) | |
2874 | { | |
2875 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2876 | break; | |
2877 | } | |
2878 | /* FIXME: Save values for future ugetrlimit calls. */ | |
2879 | retval = 0; | |
2880 | break; | |
2881 | ||
2882 | /* Provide a very limited subset of the sysctl functions, and | |
2883 | abort for the rest. */ | |
2884 | case TARGET_SYS__sysctl: | |
2885 | { | |
2886 | /* The kernel says: | |
2887 | struct __sysctl_args { | |
2888 | int *name; | |
2889 | int nlen; | |
2890 | void *oldval; | |
2891 | size_t *oldlenp; | |
2892 | void *newval; | |
2893 | size_t newlen; | |
2894 | unsigned long __unused[4]; | |
2895 | }; */ | |
2896 | SI name = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1); | |
2897 | SI name0 = name == 0 | |
2898 | ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, name); | |
2899 | SI name1 = name == 0 | |
2900 | ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, name + 4); | |
2901 | SI nlen | |
2902 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 4); | |
2903 | SI oldval | |
2904 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 8); | |
2905 | SI oldlenp | |
2906 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 12); | |
2907 | SI oldlen = oldlenp == 0 | |
2908 | ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, oldlenp); | |
2909 | SI newval | |
2910 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 16); | |
2911 | SI newlen | |
2912 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 20); | |
2913 | ||
2914 | if (name0 == TARGET_CTL_KERN && name1 == TARGET_CTL_KERN_VERSION) | |
2915 | { | |
2916 | SI to_write = oldlen < (SI) sizeof (TARGET_UTSNAME) | |
2917 | ? oldlen : (SI) sizeof (TARGET_UTSNAME); | |
2918 | ||
2919 | sim_core_write_unaligned_4 (current_cpu, pc, 0, oldlenp, | |
2920 | sizeof (TARGET_UTSNAME)); | |
2921 | ||
2922 | if (sim_core_write_buffer (sd, current_cpu, write_map, | |
2923 | TARGET_UTSNAME, oldval, | |
2924 | to_write) | |
2925 | != (unsigned int) to_write) | |
2926 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
2927 | else | |
2928 | retval = 0; | |
2929 | break; | |
2930 | } | |
2931 | ||
466b1d33 HPN |
2932 | retval |
2933 | = cris_unknown_syscall (current_cpu, pc, | |
2934 | "Unimplemented _sysctl syscall " | |
2935 | "(0x%lx: [0x%lx, 0x%lx]," | |
2936 | " 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx)\n", | |
2937 | (unsigned long) name, | |
2938 | (unsigned long) name0, | |
2939 | (unsigned long) name1, | |
2940 | (unsigned long) nlen, | |
2941 | (unsigned long) oldval, | |
2942 | (unsigned long) oldlenp, | |
2943 | (unsigned long) newval, | |
2944 | (unsigned long) newlen); | |
f6bcefef HPN |
2945 | break; |
2946 | } | |
2947 | ||
2948 | case TARGET_SYS_exit: | |
2949 | { | |
2950 | /* Here for all but the last thread. */ | |
2951 | int i; | |
2952 | int pid | |
2953 | = current_cpu->thread_data[threadno].threadid + TARGET_PID; | |
2954 | int ppid | |
2955 | = (current_cpu->thread_data[threadno].parent_threadid | |
2956 | + TARGET_PID); | |
2957 | int exitsig = current_cpu->thread_data[threadno].exitsig; | |
2958 | ||
2959 | /* Any children are now all orphans. */ | |
2960 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
2961 | if (current_cpu->thread_data[i].parent_threadid | |
2962 | == current_cpu->thread_data[threadno].threadid) | |
2963 | /* Make getppid(2) return 1 for them, poor little ones. */ | |
2964 | current_cpu->thread_data[i].parent_threadid = -TARGET_PID + 1; | |
2965 | ||
2966 | /* Free the cpu context data. When the parent has received | |
2967 | the exit status, we'll clear the entry too. */ | |
2968 | free (current_cpu->thread_data[threadno].cpu_context); | |
2969 | current_cpu->thread_data[threadno].cpu_context = NULL; | |
2970 | current_cpu->m1threads--; | |
2971 | if (arg1 != 0) | |
2972 | { | |
2973 | sim_io_eprintf (sd, "Thread %d exited with status %d\n", | |
2974 | pid, arg1); | |
2975 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2976 | SIM_SIGILL); | |
2977 | } | |
2978 | ||
2979 | /* Still, we may want to support non-zero exit values. */ | |
2980 | current_cpu->thread_data[threadno].exitval = arg1 << 8; | |
2981 | ||
2982 | if (exitsig) | |
2983 | deliver_signal (current_cpu, exitsig, ppid); | |
2984 | break; | |
2985 | } | |
2986 | ||
2987 | case TARGET_SYS_clone: | |
2988 | { | |
2989 | int nthreads = current_cpu->m1threads + 1; | |
2990 | void *thread_cpu_data; | |
2991 | bfd_byte old_sp_buf[4]; | |
2992 | bfd_byte sp_buf[4]; | |
2993 | const bfd_byte zeros[4] = { 0, 0, 0, 0 }; | |
2994 | int i; | |
2995 | ||
2996 | /* That's right, the syscall clone arguments are reversed | |
2997 | compared to sys_clone notes in clone(2) and compared to | |
2998 | other Linux ports (i.e. it's the same order as in the | |
2999 | clone(2) libcall). */ | |
3000 | USI flags = arg2; | |
3001 | USI newsp = arg1; | |
3002 | ||
3003 | if (nthreads == SIM_TARGET_MAX_THREADS) | |
3004 | { | |
3005 | retval = -cb_host_to_target_errno (cb, EAGAIN); | |
3006 | break; | |
3007 | } | |
3008 | ||
3009 | /* FIXME: Implement the low byte. */ | |
3010 | if ((flags & ~TARGET_CSIGNAL) != | |
3011 | (TARGET_CLONE_VM | |
3012 | | TARGET_CLONE_FS | |
3013 | | TARGET_CLONE_FILES | |
3014 | | TARGET_CLONE_SIGHAND) | |
3015 | || newsp == 0) | |
3016 | { | |
466b1d33 HPN |
3017 | retval |
3018 | = cris_unknown_syscall (current_cpu, pc, | |
3019 | "Unimplemented clone syscall " | |
3020 | "(0x%lx, 0x%lx)\n", | |
3021 | (unsigned long) arg1, | |
3022 | (unsigned long) arg2); | |
3023 | break; | |
f6bcefef HPN |
3024 | } |
3025 | ||
3026 | if (current_cpu->thread_data == NULL) | |
3027 | make_first_thread (current_cpu); | |
3028 | ||
3029 | /* The created thread will get the new SP and a cleared R10. | |
3030 | Since it's created out of a copy of the old thread and we | |
3031 | don't have a set-register-function that just take the | |
3032 | cpu_data as a parameter, we set the childs values first, | |
3033 | and write back or overwrite them in the parent after the | |
3034 | copy. */ | |
3035 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, | |
3036 | H_GR_SP, old_sp_buf, 4); | |
3037 | bfd_putl32 (newsp, sp_buf); | |
3038 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
3039 | H_GR_SP, sp_buf, 4); | |
3040 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
3041 | H_GR_R10, (bfd_byte *) zeros, 4); | |
3042 | thread_cpu_data | |
3043 | = (*current_cpu | |
3044 | ->make_thread_cpu_data) (current_cpu, | |
3045 | ¤t_cpu->cpu_data_placeholder); | |
3046 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
3047 | H_GR_SP, old_sp_buf, 4); | |
3048 | ||
3049 | retval = ++current_cpu->max_threadid + TARGET_PID; | |
3050 | ||
3051 | /* Find an unused slot. After a few threads have been created | |
3052 | and exited, the array is expected to be a bit fragmented. | |
3053 | We don't reuse the first entry, though, that of the | |
3054 | original thread. */ | |
3055 | for (i = 1; i < SIM_TARGET_MAX_THREADS; i++) | |
3056 | if (current_cpu->thread_data[i].cpu_context == NULL | |
3057 | /* Don't reuse a zombied entry. */ | |
3058 | && current_cpu->thread_data[i].threadid == 0) | |
3059 | break; | |
3060 | ||
3061 | memcpy (¤t_cpu->thread_data[i], | |
3062 | ¤t_cpu->thread_data[threadno], | |
3063 | sizeof (current_cpu->thread_data[i])); | |
3064 | current_cpu->thread_data[i].cpu_context = thread_cpu_data; | |
3065 | current_cpu->thread_data[i].cpu_context_atsignal = NULL; | |
3066 | current_cpu->thread_data[i].threadid = current_cpu->max_threadid; | |
3067 | current_cpu->thread_data[i].parent_threadid | |
3068 | = current_cpu->thread_data[threadno].threadid; | |
3069 | current_cpu->thread_data[i].pipe_read_fd = 0; | |
3070 | current_cpu->thread_data[i].pipe_write_fd = 0; | |
3071 | current_cpu->thread_data[i].at_syscall = 0; | |
3072 | current_cpu->thread_data[i].sigpending = 0; | |
3073 | current_cpu->thread_data[i].sigsuspended = 0; | |
3074 | current_cpu->thread_data[i].exitsig = flags & TARGET_CSIGNAL; | |
3075 | current_cpu->m1threads = nthreads; | |
3076 | break; | |
3077 | } | |
3078 | ||
3079 | /* Better watch these in case they do something necessary. */ | |
3080 | case TARGET_SYS_socketcall: | |
3081 | retval = -cb_host_to_target_errno (cb, ENOSYS); | |
3082 | break; | |
3083 | ||
3084 | unimplemented_syscall: | |
3085 | default: | |
466b1d33 HPN |
3086 | retval |
3087 | = cris_unknown_syscall (current_cpu, pc, | |
3088 | "Unimplemented syscall: %d " | |
3089 | "(0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n", | |
3090 | callnum, arg1, arg2, arg3, arg4, arg5, | |
3091 | arg6); | |
f6bcefef HPN |
3092 | } |
3093 | } | |
3094 | ||
ed1f044a HPN |
3095 | /* Minimal support for fcntl F_GETFL as used in open+fdopen. */ |
3096 | if (callnum == TARGET_SYS_open) | |
3097 | { | |
3098 | current_cpu->last_open_fd = retval; | |
3099 | current_cpu->last_open_flags = arg2; | |
3100 | } | |
466b1d33 | 3101 | |
ed1f044a HPN |
3102 | current_cpu->last_syscall = callnum; |
3103 | ||
f6bcefef HPN |
3104 | /* A system call is a rescheduling point. For the time being, we don't |
3105 | reschedule anywhere else. */ | |
3106 | if (current_cpu->m1threads != 0 | |
3107 | /* We need to schedule off from an exiting thread that is the | |
3108 | second-last one. */ | |
3109 | || (current_cpu->thread_data != NULL | |
3110 | && current_cpu->thread_data[threadno].cpu_context == NULL)) | |
3111 | { | |
3112 | bfd_byte retval_buf[4]; | |
3113 | ||
3114 | current_cpu->thread_data[threadno].last_execution | |
3115 | = TARGET_TIME_MS (current_cpu); | |
3116 | bfd_putl32 (retval, retval_buf); | |
3117 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R10, retval_buf, 4); | |
3118 | ||
3119 | current_cpu->thread_data[threadno].at_syscall = 1; | |
3120 | reschedule (current_cpu); | |
3121 | ||
3122 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_R10, retval_buf, 4); | |
3123 | retval = bfd_getl32 (retval_buf); | |
3124 | } | |
3125 | ||
3126 | return retval; | |
3127 | } | |
3128 | ||
3129 | /* Callback from simulator write saying that the pipe at (reader, writer) | |
3130 | is now non-empty (so the writer should wait until the pipe is empty, at | |
3131 | least not write to this or any other pipe). Simplest is to just wait | |
3132 | until the pipe is empty. */ | |
3133 | ||
3134 | static void | |
3135 | cris_pipe_nonempty (host_callback *cb ATTRIBUTE_UNUSED, | |
3136 | int reader, int writer) | |
3137 | { | |
3138 | SIM_CPU *cpu = current_cpu_for_cb_callback; | |
3139 | const bfd_byte zeros[4] = { 0, 0, 0, 0 }; | |
3140 | ||
3141 | /* It's the current thread: we just have to re-run the current | |
3142 | syscall instruction (presumably "break 13") and change the syscall | |
3143 | to the special simulator-wait code. Oh, and set a marker that | |
3144 | we're waiting, so we can disambiguate the special call from a | |
3145 | program error. | |
3146 | ||
3147 | This function may be called multiple times between cris_pipe_empty, | |
3148 | but we must avoid e.g. decreasing PC every time. Check fd markers | |
3149 | to tell. */ | |
3150 | if (cpu->thread_data == NULL) | |
3151 | { | |
3152 | sim_io_eprintf (CPU_STATE (cpu), | |
3153 | "Terminating simulation due to writing pipe rd:wr %d:%d" | |
3154 | " from one single thread\n", reader, writer); | |
3155 | sim_engine_halt (CPU_STATE (cpu), cpu, | |
3156 | NULL, sim_pc_get (cpu), sim_stopped, SIM_SIGILL); | |
3157 | } | |
3158 | else if (cpu->thread_data[cpu->threadno].pipe_write_fd == 0) | |
3159 | { | |
3160 | cpu->thread_data[cpu->threadno].pipe_write_fd = writer; | |
3161 | cpu->thread_data[cpu->threadno].pipe_read_fd = reader; | |
3162 | /* FIXME: We really shouldn't change registers other than R10 in | |
3163 | syscalls (like R9), here or elsewhere. */ | |
3164 | (*CPU_REG_STORE (cpu)) (cpu, H_GR_R9, (bfd_byte *) zeros, 4); | |
3165 | sim_pc_set (cpu, sim_pc_get (cpu) - 2); | |
3166 | } | |
3167 | } | |
3168 | ||
3169 | /* Callback from simulator close or read call saying that the pipe at | |
3170 | (reader, writer) is now empty (so the writer can write again, perhaps | |
3171 | leave a waiting state). If there are bytes remaining, they couldn't be | |
3172 | consumed (perhaps due to the pipe closing). */ | |
3173 | ||
3174 | static void | |
3175 | cris_pipe_empty (host_callback *cb, | |
eccd787e | 3176 | int reader, |
f6bcefef HPN |
3177 | int writer) |
3178 | { | |
3179 | int i; | |
3180 | SIM_CPU *cpu = current_cpu_for_cb_callback; | |
3181 | bfd_byte r10_buf[4]; | |
eccd787e HPN |
3182 | int remaining |
3183 | = cb->pipe_buffer[writer].size - cb->pipe_buffer[reader].size; | |
f6bcefef HPN |
3184 | |
3185 | /* We need to find the thread that waits for this pipe. */ | |
3186 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
3187 | if (cpu->thread_data[i].cpu_context | |
3188 | && cpu->thread_data[i].pipe_write_fd == writer) | |
3189 | { | |
3190 | int retval; | |
eccd787e | 3191 | |
f6bcefef HPN |
3192 | /* Temporarily switch to this cpu context, so we can change the |
3193 | PC by ordinary calls. */ | |
3194 | ||
3195 | memcpy (cpu->thread_data[cpu->threadno].cpu_context, | |
3196 | &cpu->cpu_data_placeholder, | |
3197 | cpu->thread_cpu_data_size); | |
3198 | memcpy (&cpu->cpu_data_placeholder, | |
3199 | cpu->thread_data[i].cpu_context, | |
3200 | cpu->thread_cpu_data_size); | |
3201 | ||
eccd787e HPN |
3202 | /* The return value is supposed to contain the number of |
3203 | written bytes, which is the number of bytes requested and | |
3204 | returned at the write call. You might think the right | |
3205 | thing is to adjust the return-value to be only the | |
3206 | *consumed* number of bytes, but it isn't. We're only | |
3207 | called if the pipe buffer is fully consumed or it is being | |
3208 | closed, possibly with remaining bytes. For the latter | |
3209 | case, the writer is still supposed to see success for | |
3210 | PIPE_BUF bytes (a constant which we happen to know and is | |
3211 | unlikely to change). The return value may also be a | |
3212 | negative number; an error value. This case is covered | |
3213 | because "remaining" is always >= 0. */ | |
f6bcefef HPN |
3214 | (*CPU_REG_FETCH (cpu)) (cpu, H_GR_R10, r10_buf, 4); |
3215 | retval = (int) bfd_getl_signed_32 (r10_buf); | |
eccd787e HPN |
3216 | if (retval - remaining > TARGET_PIPE_BUF) |
3217 | { | |
3218 | bfd_putl32 (retval - remaining, r10_buf); | |
3219 | (*CPU_REG_STORE (cpu)) (cpu, H_GR_R10, r10_buf, 4); | |
3220 | } | |
f6bcefef HPN |
3221 | sim_pc_set (cpu, sim_pc_get (cpu) + 2); |
3222 | memcpy (cpu->thread_data[i].cpu_context, | |
3223 | &cpu->cpu_data_placeholder, | |
3224 | cpu->thread_cpu_data_size); | |
3225 | memcpy (&cpu->cpu_data_placeholder, | |
3226 | cpu->thread_data[cpu->threadno].cpu_context, | |
3227 | cpu->thread_cpu_data_size); | |
3228 | cpu->thread_data[i].pipe_read_fd = 0; | |
3229 | cpu->thread_data[i].pipe_write_fd = 0; | |
3230 | return; | |
3231 | } | |
3232 | ||
3233 | abort (); | |
3234 | } | |
3235 | ||
3236 | /* We have a simulator-specific notion of time. See TARGET_TIME. */ | |
3237 | ||
3238 | static long | |
3239 | cris_time (host_callback *cb ATTRIBUTE_UNUSED, long *t) | |
3240 | { | |
3241 | long retval = TARGET_TIME (current_cpu_for_cb_callback); | |
3242 | if (t) | |
3243 | *t = retval; | |
3244 | return retval; | |
3245 | } | |
3246 | ||
3247 | /* Set target-specific callback data. */ | |
3248 | ||
3249 | void | |
3250 | cris_set_callbacks (host_callback *cb) | |
3251 | { | |
3252 | /* Yeargh, have to cast away constness to avoid warnings. */ | |
3253 | cb->syscall_map = (CB_TARGET_DEFS_MAP *) syscall_map; | |
3254 | cb->errno_map = (CB_TARGET_DEFS_MAP *) errno_map; | |
3255 | ||
3256 | /* The kernel stat64 layout. If we see a file > 2G, the "long" | |
3257 | parameter to cb_store_target_endian will make st_size negative. | |
3258 | Similarly for st_ino. FIXME: Find a 64-bit type, and use it | |
3259 | *unsigned*, and/or add syntax for signed-ness. */ | |
3260 | cb->stat_map = stat_map; | |
3261 | cb->open_map = (CB_TARGET_DEFS_MAP *) open_map; | |
3262 | cb->pipe_nonempty = cris_pipe_nonempty; | |
3263 | cb->pipe_empty = cris_pipe_empty; | |
3264 | cb->time = cris_time; | |
3265 | } | |
3266 | ||
3267 | /* Process an address exception. */ | |
3268 | ||
3269 | void | |
3270 | cris_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia, | |
3271 | unsigned int map, int nr_bytes, address_word addr, | |
3272 | transfer_type transfer, sim_core_signals sig) | |
3273 | { | |
3274 | sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr, | |
3275 | transfer, sig); | |
3276 | } |