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f6bcefef HPN |
1 | /* CRIS exception, interrupt, and trap (EIT) support |
2 | Copyright (C) 2004, 2005 Free Software Foundation, Inc. | |
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 | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
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 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with this program; if not, write to the Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "sim-main.h" | |
22 | #include "sim-options.h" | |
f6bcefef | 23 | #include "bfd.h" |
ed1f044a HPN |
24 | /* FIXME: get rid of targ-vals.h usage everywhere else. */ |
25 | ||
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 | |
41 | ||
42 | /* The verbatim values are from asm-cris/unistd.h. */ | |
43 | ||
44 | #define TARGET_SYS_exit 1 | |
45 | #define TARGET_SYS_read 3 | |
46 | #define TARGET_SYS_write 4 | |
47 | #define TARGET_SYS_open 5 | |
48 | #define TARGET_SYS_close 6 | |
49 | #define TARGET_SYS_unlink 10 | |
50 | #define TARGET_SYS_time 13 | |
51 | #define TARGET_SYS_lseek 19 | |
52 | #define TARGET_SYS_getpid 20 | |
53 | #define TARGET_SYS_kill 37 | |
54 | #define TARGET_SYS_rename 38 | |
55 | #define TARGET_SYS_pipe 42 | |
56 | #define TARGET_SYS_brk 45 | |
57 | #define TARGET_SYS_ioctl 54 | |
58 | #define TARGET_SYS_fcntl 55 | |
59 | #define TARGET_SYS_getppid 64 | |
60 | #define TARGET_SYS_setrlimit 75 | |
61 | #define TARGET_SYS_gettimeofday 78 | |
62 | #define TARGET_SYS_readlink 85 | |
63 | #define TARGET_SYS_munmap 91 | |
64 | #define TARGET_SYS_truncate 92 | |
65 | #define TARGET_SYS_ftruncate 93 | |
66 | #define TARGET_SYS_socketcall 102 | |
5457266c | 67 | #define TARGET_SYS_stat 106 |
f6bcefef HPN |
68 | #define TARGET_SYS_fstat 108 |
69 | #define TARGET_SYS_wait4 114 | |
70 | #define TARGET_SYS_sigreturn 119 | |
71 | #define TARGET_SYS_clone 120 | |
72 | #define TARGET_SYS_uname 122 | |
73 | #define TARGET_SYS_mprotect 125 | |
74 | #define TARGET_SYS_llseek 140 | |
75 | #define TARGET_SYS__sysctl 149 | |
76 | #define TARGET_SYS_sched_setparam 154 | |
77 | #define TARGET_SYS_sched_getparam 155 | |
78 | #define TARGET_SYS_sched_setscheduler 156 | |
79 | #define TARGET_SYS_sched_getscheduler 157 | |
80 | #define TARGET_SYS_sched_yield 158 | |
81 | #define TARGET_SYS_sched_get_priority_max 159 | |
82 | #define TARGET_SYS_sched_get_priority_min 160 | |
83 | #define TARGET_SYS_mremap 163 | |
84 | #define TARGET_SYS_poll 168 | |
85 | #define TARGET_SYS_rt_sigaction 174 | |
86 | #define TARGET_SYS_rt_sigprocmask 175 | |
87 | #define TARGET_SYS_rt_sigsuspend 179 | |
88 | #define TARGET_SYS_getcwd 183 | |
89 | #define TARGET_SYS_ugetrlimit 191 | |
90 | #define TARGET_SYS_mmap2 192 | |
91 | #define TARGET_SYS_stat64 195 | |
92 | #define TARGET_SYS_lstat64 196 | |
93 | #define TARGET_SYS_fstat64 197 | |
94 | #define TARGET_SYS_geteuid32 201 | |
95 | #define TARGET_SYS_getuid32 199 | |
96 | #define TARGET_SYS_getegid32 202 | |
97 | #define TARGET_SYS_getgid32 200 | |
98 | #define TARGET_SYS_fcntl64 221 | |
99 | ||
100 | #define TARGET_PROT_READ 0x1 | |
101 | #define TARGET_PROT_WRITE 0x2 | |
102 | #define TARGET_PROT_EXEC 0x4 | |
103 | #define TARGET_PROT_NONE 0x0 | |
104 | ||
105 | #define TARGET_MAP_SHARED 0x01 | |
106 | #define TARGET_MAP_PRIVATE 0x02 | |
107 | #define TARGET_MAP_TYPE 0x0f | |
108 | #define TARGET_MAP_FIXED 0x10 | |
109 | #define TARGET_MAP_ANONYMOUS 0x20 | |
110 | ||
111 | #define TARGET_CTL_KERN 1 | |
112 | #define TARGET_CTL_VM 2 | |
113 | #define TARGET_CTL_NET 3 | |
114 | #define TARGET_CTL_PROC 4 | |
115 | #define TARGET_CTL_FS 5 | |
116 | #define TARGET_CTL_DEBUG 6 | |
117 | #define TARGET_CTL_DEV 7 | |
118 | #define TARGET_CTL_BUS 8 | |
119 | #define TARGET_CTL_ABI 9 | |
120 | ||
121 | #define TARGET_CTL_KERN_VERSION 4 | |
122 | ||
123 | /* linux/mman.h */ | |
124 | #define TARGET_MREMAP_MAYMOVE 1 | |
125 | #define TARGET_MREMAP_FIXED 2 | |
126 | ||
127 | #define TARGET_TCGETS 0x5401 | |
128 | ||
129 | #define TARGET_UTSNAME "#38 Sun Apr 1 00:00:00 MET 2001" | |
130 | ||
131 | /* Seconds since the above date + 10 minutes. */ | |
132 | #define TARGET_EPOCH 986080200 | |
133 | ||
134 | /* Milliseconds since start of run. We use the number of syscalls to | |
135 | avoid introducing noise in the execution time. */ | |
136 | #define TARGET_TIME_MS(cpu) ((cpu)->syscalls) | |
137 | ||
138 | /* Seconds as in time(2). */ | |
139 | #define TARGET_TIME(cpu) (TARGET_EPOCH + TARGET_TIME_MS (cpu) / 1000) | |
140 | ||
141 | #define TARGET_SCHED_OTHER 0 | |
142 | ||
143 | #define TARGET_RLIMIT_STACK 3 | |
144 | #define TARGET_RLIMIT_NOFILE 7 | |
145 | ||
146 | #define SIM_TARGET_MAX_THREADS 64 | |
147 | #define SIM_MAX_ALLOC_CHUNK (512*1024*1024) | |
148 | ||
149 | /* From linux/sched.h. */ | |
150 | #define TARGET_CSIGNAL 0x000000ff | |
151 | #define TARGET_CLONE_VM 0x00000100 | |
152 | #define TARGET_CLONE_FS 0x00000200 | |
153 | #define TARGET_CLONE_FILES 0x00000400 | |
154 | #define TARGET_CLONE_SIGHAND 0x00000800 | |
155 | #define TARGET_CLONE_PID 0x00001000 | |
156 | #define TARGET_CLONE_PTRACE 0x00002000 | |
157 | #define TARGET_CLONE_VFORK 0x00004000 | |
158 | #define TARGET_CLONE_PARENT 0x00008000 | |
159 | #define TARGET_CLONE_THREAD 0x00010000 | |
160 | #define TARGET_CLONE_SIGNAL (TARGET_CLONE_SIGHAND | TARGET_CLONE_THREAD) | |
161 | ||
162 | /* From asm-cris/poll.h. */ | |
163 | #define TARGET_POLLIN 1 | |
164 | ||
165 | /* From asm-cris/signal.h. */ | |
166 | #define TARGET_SIG_BLOCK 0 | |
167 | #define TARGET_SIG_UNBLOCK 1 | |
168 | #define TARGET_SIG_SETMASK 2 | |
169 | ||
170 | #define TARGET_SIG_DFL 0 | |
171 | #define TARGET_SIG_IGN 1 | |
172 | #define TARGET_SIG_ERR ((USI)-1) | |
173 | ||
174 | #define TARGET_SIGHUP 1 | |
175 | #define TARGET_SIGINT 2 | |
176 | #define TARGET_SIGQUIT 3 | |
177 | #define TARGET_SIGILL 4 | |
178 | #define TARGET_SIGTRAP 5 | |
179 | #define TARGET_SIGABRT 6 | |
180 | #define TARGET_SIGIOT 6 | |
181 | #define TARGET_SIGBUS 7 | |
182 | #define TARGET_SIGFPE 8 | |
183 | #define TARGET_SIGKILL 9 | |
184 | #define TARGET_SIGUSR1 10 | |
185 | #define TARGET_SIGSEGV 11 | |
186 | #define TARGET_SIGUSR2 12 | |
187 | #define TARGET_SIGPIPE 13 | |
188 | #define TARGET_SIGALRM 14 | |
189 | #define TARGET_SIGTERM 15 | |
190 | #define TARGET_SIGSTKFLT 16 | |
191 | #define TARGET_SIGCHLD 17 | |
192 | #define TARGET_SIGCONT 18 | |
193 | #define TARGET_SIGSTOP 19 | |
194 | #define TARGET_SIGTSTP 20 | |
195 | #define TARGET_SIGTTIN 21 | |
196 | #define TARGET_SIGTTOU 22 | |
197 | #define TARGET_SIGURG 23 | |
198 | #define TARGET_SIGXCPU 24 | |
199 | #define TARGET_SIGXFSZ 25 | |
200 | #define TARGET_SIGVTALRM 26 | |
201 | #define TARGET_SIGPROF 27 | |
202 | #define TARGET_SIGWINCH 28 | |
203 | #define TARGET_SIGIO 29 | |
204 | #define TARGET_SIGPOLL SIGIO | |
205 | /* Actually commented out in the kernel header. */ | |
206 | #define TARGET_SIGLOST 29 | |
207 | #define TARGET_SIGPWR 30 | |
208 | #define TARGET_SIGSYS 31 | |
209 | ||
210 | /* From include/asm-cris/signal.h. */ | |
211 | #define TARGET_SA_NOCLDSTOP 0x00000001 | |
212 | #define TARGET_SA_NOCLDWAIT 0x00000002 /* not supported yet */ | |
213 | #define TARGET_SA_SIGINFO 0x00000004 | |
214 | #define TARGET_SA_ONSTACK 0x08000000 | |
215 | #define TARGET_SA_RESTART 0x10000000 | |
216 | #define TARGET_SA_NODEFER 0x40000000 | |
217 | #define TARGET_SA_RESETHAND 0x80000000 | |
218 | #define TARGET_SA_INTERRUPT 0x20000000 /* dummy -- ignored */ | |
219 | #define TARGET_SA_RESTORER 0x04000000 | |
220 | ||
221 | /* From linux/wait.h. */ | |
222 | #define TARGET_WNOHANG 1 | |
223 | #define TARGET_WUNTRACED 2 | |
224 | #define TARGET___WNOTHREAD 0x20000000 | |
225 | #define TARGET___WALL 0x40000000 | |
226 | #define TARGET___WCLONE 0x80000000 | |
227 | ||
228 | static const char stat_map[] = | |
229 | "st_dev,2:space,10:space,4:st_mode,4:st_nlink,4:st_uid,4" | |
230 | ":st_gid,4:st_rdev,2:space,10:st_size,8:st_blksize,4:st_blocks,4" | |
231 | ":space,4:st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:space,4" | |
232 | ":st_ino,8"; | |
233 | ||
234 | static const CB_TARGET_DEFS_MAP syscall_map[] = | |
235 | { | |
236 | { CB_SYS_open, TARGET_SYS_open }, | |
237 | { CB_SYS_close, TARGET_SYS_close }, | |
238 | { CB_SYS_read, TARGET_SYS_read }, | |
239 | { CB_SYS_write, TARGET_SYS_write }, | |
240 | { CB_SYS_lseek, TARGET_SYS_lseek }, | |
241 | { CB_SYS_unlink, TARGET_SYS_unlink }, | |
242 | { CB_SYS_getpid, TARGET_SYS_getpid }, | |
243 | { CB_SYS_fstat, TARGET_SYS_fstat64 }, | |
244 | { CB_SYS_lstat, TARGET_SYS_lstat64 }, | |
245 | { CB_SYS_stat, TARGET_SYS_stat64 }, | |
246 | { CB_SYS_pipe, TARGET_SYS_pipe }, | |
f6bcefef HPN |
247 | { CB_SYS_rename, TARGET_SYS_rename }, |
248 | { CB_SYS_truncate, TARGET_SYS_truncate }, | |
249 | { CB_SYS_ftruncate, TARGET_SYS_ftruncate }, | |
250 | { 0, -1 } | |
251 | }; | |
252 | ||
253 | /* An older, 32-bit-only stat mapping. */ | |
254 | static const char stat32_map[] = | |
255 | "st_dev,2:space,2:st_ino,4:st_mode,2:st_nlink,2:st_uid,2" | |
256 | ":st_gid,2:st_rdev,2:space,2:st_size,4:st_blksize,4:st_blocks,4" | |
257 | ":st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:space,12"; | |
258 | ||
259 | /* Map for calls using the 32-bit struct stat. Primarily used by the | |
260 | newlib Linux mapping. */ | |
261 | static const CB_TARGET_DEFS_MAP syscall_stat32_map[] = | |
262 | { | |
263 | { CB_SYS_fstat, TARGET_SYS_fstat }, | |
5457266c | 264 | { CB_SYS_stat, TARGET_SYS_stat }, |
f6bcefef HPN |
265 | { 0, -1 } |
266 | }; | |
267 | ||
268 | /* Giving the true value for the running sim process will lead to | |
269 | non-time-invariant behavior. */ | |
270 | #define TARGET_PID 42 | |
271 | ||
272 | /* Unfortunately, we don't get this from cris.cpu at the moment, and if | |
273 | we did, we'd still don't get a register number with the "16" offset. */ | |
274 | #define TARGET_SRP_REGNUM (16+11) | |
275 | ||
276 | /* Extracted by applying | |
277 | awk '/^#define/ { printf "#ifdef %s\n { %s, %s },\n#endif\n", $2, $2, $3;}' | |
278 | on .../include/asm/errno.h in a GNU/Linux/CRIS installation and | |
279 | adjusting the synonyms. */ | |
280 | ||
281 | static const CB_TARGET_DEFS_MAP errno_map[] = | |
282 | { | |
283 | #ifdef EPERM | |
284 | { EPERM, 1 }, | |
285 | #endif | |
286 | #ifdef ENOENT | |
287 | { ENOENT, 2 }, | |
288 | #endif | |
289 | #ifdef ESRCH | |
290 | { ESRCH, 3 }, | |
291 | #endif | |
292 | #ifdef EINTR | |
293 | { EINTR, 4 }, | |
294 | #endif | |
295 | #ifdef EIO | |
296 | { EIO, 5 }, | |
297 | #endif | |
298 | #ifdef ENXIO | |
299 | { ENXIO, 6 }, | |
300 | #endif | |
301 | #ifdef E2BIG | |
302 | { E2BIG, 7 }, | |
303 | #endif | |
304 | #ifdef ENOEXEC | |
305 | { ENOEXEC, 8 }, | |
306 | #endif | |
307 | #ifdef EBADF | |
308 | { EBADF, 9 }, | |
309 | #endif | |
310 | #ifdef ECHILD | |
311 | { ECHILD, 10 }, | |
312 | #endif | |
313 | #ifdef EAGAIN | |
314 | { EAGAIN, 11 }, | |
315 | #endif | |
316 | #ifdef ENOMEM | |
317 | { ENOMEM, 12 }, | |
318 | #endif | |
319 | #ifdef EACCES | |
320 | { EACCES, 13 }, | |
321 | #endif | |
322 | #ifdef EFAULT | |
323 | { EFAULT, 14 }, | |
324 | #endif | |
325 | #ifdef ENOTBLK | |
326 | { ENOTBLK, 15 }, | |
327 | #endif | |
328 | #ifdef EBUSY | |
329 | { EBUSY, 16 }, | |
330 | #endif | |
331 | #ifdef EEXIST | |
332 | { EEXIST, 17 }, | |
333 | #endif | |
334 | #ifdef EXDEV | |
335 | { EXDEV, 18 }, | |
336 | #endif | |
337 | #ifdef ENODEV | |
338 | { ENODEV, 19 }, | |
339 | #endif | |
340 | #ifdef ENOTDIR | |
341 | { ENOTDIR, 20 }, | |
342 | #endif | |
343 | #ifdef EISDIR | |
344 | { EISDIR, 21 }, | |
345 | #endif | |
346 | #ifdef EINVAL | |
347 | { EINVAL, 22 }, | |
348 | #endif | |
349 | #ifdef ENFILE | |
350 | { ENFILE, 23 }, | |
351 | #endif | |
352 | #ifdef EMFILE | |
353 | { EMFILE, 24 }, | |
354 | #endif | |
355 | #ifdef ENOTTY | |
356 | { ENOTTY, 25 }, | |
357 | #endif | |
358 | #ifdef ETXTBSY | |
359 | { ETXTBSY, 26 }, | |
360 | #endif | |
361 | #ifdef EFBIG | |
362 | { EFBIG, 27 }, | |
363 | #endif | |
364 | #ifdef ENOSPC | |
365 | { ENOSPC, 28 }, | |
366 | #endif | |
367 | #ifdef ESPIPE | |
368 | { ESPIPE, 29 }, | |
369 | #endif | |
370 | #ifdef EROFS | |
371 | { EROFS, 30 }, | |
372 | #endif | |
373 | #ifdef EMLINK | |
374 | { EMLINK, 31 }, | |
375 | #endif | |
376 | #ifdef EPIPE | |
377 | { EPIPE, 32 }, | |
378 | #endif | |
379 | #ifdef EDOM | |
380 | { EDOM, 33 }, | |
381 | #endif | |
382 | #ifdef ERANGE | |
383 | { ERANGE, 34 }, | |
384 | #endif | |
385 | #ifdef EDEADLK | |
386 | { EDEADLK, 35 }, | |
387 | #endif | |
388 | #ifdef ENAMETOOLONG | |
389 | { ENAMETOOLONG, 36 }, | |
390 | #endif | |
391 | #ifdef ENOLCK | |
392 | { ENOLCK, 37 }, | |
393 | #endif | |
394 | #ifdef ENOSYS | |
395 | { ENOSYS, 38 }, | |
396 | #endif | |
397 | #ifdef ENOTEMPTY | |
398 | { ENOTEMPTY, 39 }, | |
399 | #endif | |
400 | #ifdef ELOOP | |
401 | { ELOOP, 40 }, | |
402 | #endif | |
403 | #ifdef EWOULDBLOCK | |
404 | { EWOULDBLOCK, 11 }, | |
405 | #endif | |
406 | #ifdef ENOMSG | |
407 | { ENOMSG, 42 }, | |
408 | #endif | |
409 | #ifdef EIDRM | |
410 | { EIDRM, 43 }, | |
411 | #endif | |
412 | #ifdef ECHRNG | |
413 | { ECHRNG, 44 }, | |
414 | #endif | |
415 | #ifdef EL2NSYNC | |
416 | { EL2NSYNC, 45 }, | |
417 | #endif | |
418 | #ifdef EL3HLT | |
419 | { EL3HLT, 46 }, | |
420 | #endif | |
421 | #ifdef EL3RST | |
422 | { EL3RST, 47 }, | |
423 | #endif | |
424 | #ifdef ELNRNG | |
425 | { ELNRNG, 48 }, | |
426 | #endif | |
427 | #ifdef EUNATCH | |
428 | { EUNATCH, 49 }, | |
429 | #endif | |
430 | #ifdef ENOCSI | |
431 | { ENOCSI, 50 }, | |
432 | #endif | |
433 | #ifdef EL2HLT | |
434 | { EL2HLT, 51 }, | |
435 | #endif | |
436 | #ifdef EBADE | |
437 | { EBADE, 52 }, | |
438 | #endif | |
439 | #ifdef EBADR | |
440 | { EBADR, 53 }, | |
441 | #endif | |
442 | #ifdef EXFULL | |
443 | { EXFULL, 54 }, | |
444 | #endif | |
445 | #ifdef ENOANO | |
446 | { ENOANO, 55 }, | |
447 | #endif | |
448 | #ifdef EBADRQC | |
449 | { EBADRQC, 56 }, | |
450 | #endif | |
451 | #ifdef EBADSLT | |
452 | { EBADSLT, 57 }, | |
453 | #endif | |
454 | #ifdef EDEADLOCK | |
455 | { EDEADLOCK, 35 }, | |
456 | #endif | |
457 | #ifdef EBFONT | |
458 | { EBFONT, 59 }, | |
459 | #endif | |
460 | #ifdef ENOSTR | |
461 | { ENOSTR, 60 }, | |
462 | #endif | |
463 | #ifdef ENODATA | |
464 | { ENODATA, 61 }, | |
465 | #endif | |
466 | #ifdef ETIME | |
467 | { ETIME, 62 }, | |
468 | #endif | |
469 | #ifdef ENOSR | |
470 | { ENOSR, 63 }, | |
471 | #endif | |
472 | #ifdef ENONET | |
473 | { ENONET, 64 }, | |
474 | #endif | |
475 | #ifdef ENOPKG | |
476 | { ENOPKG, 65 }, | |
477 | #endif | |
478 | #ifdef EREMOTE | |
479 | { EREMOTE, 66 }, | |
480 | #endif | |
481 | #ifdef ENOLINK | |
482 | { ENOLINK, 67 }, | |
483 | #endif | |
484 | #ifdef EADV | |
485 | { EADV, 68 }, | |
486 | #endif | |
487 | #ifdef ESRMNT | |
488 | { ESRMNT, 69 }, | |
489 | #endif | |
490 | #ifdef ECOMM | |
491 | { ECOMM, 70 }, | |
492 | #endif | |
493 | #ifdef EPROTO | |
494 | { EPROTO, 71 }, | |
495 | #endif | |
496 | #ifdef EMULTIHOP | |
497 | { EMULTIHOP, 72 }, | |
498 | #endif | |
499 | #ifdef EDOTDOT | |
500 | { EDOTDOT, 73 }, | |
501 | #endif | |
502 | #ifdef EBADMSG | |
503 | { EBADMSG, 74 }, | |
504 | #endif | |
505 | #ifdef EOVERFLOW | |
506 | { EOVERFLOW, 75 }, | |
507 | #endif | |
508 | #ifdef ENOTUNIQ | |
509 | { ENOTUNIQ, 76 }, | |
510 | #endif | |
511 | #ifdef EBADFD | |
512 | { EBADFD, 77 }, | |
513 | #endif | |
514 | #ifdef EREMCHG | |
515 | { EREMCHG, 78 }, | |
516 | #endif | |
517 | #ifdef ELIBACC | |
518 | { ELIBACC, 79 }, | |
519 | #endif | |
520 | #ifdef ELIBBAD | |
521 | { ELIBBAD, 80 }, | |
522 | #endif | |
523 | #ifdef ELIBSCN | |
524 | { ELIBSCN, 81 }, | |
525 | #endif | |
526 | #ifdef ELIBMAX | |
527 | { ELIBMAX, 82 }, | |
528 | #endif | |
529 | #ifdef ELIBEXEC | |
530 | { ELIBEXEC, 83 }, | |
531 | #endif | |
532 | #ifdef EILSEQ | |
533 | { EILSEQ, 84 }, | |
534 | #endif | |
535 | #ifdef ERESTART | |
536 | { ERESTART, 85 }, | |
537 | #endif | |
538 | #ifdef ESTRPIPE | |
539 | { ESTRPIPE, 86 }, | |
540 | #endif | |
541 | #ifdef EUSERS | |
542 | { EUSERS, 87 }, | |
543 | #endif | |
544 | #ifdef ENOTSOCK | |
545 | { ENOTSOCK, 88 }, | |
546 | #endif | |
547 | #ifdef EDESTADDRREQ | |
548 | { EDESTADDRREQ, 89 }, | |
549 | #endif | |
550 | #ifdef EMSGSIZE | |
551 | { EMSGSIZE, 90 }, | |
552 | #endif | |
553 | #ifdef EPROTOTYPE | |
554 | { EPROTOTYPE, 91 }, | |
555 | #endif | |
556 | #ifdef ENOPROTOOPT | |
557 | { ENOPROTOOPT, 92 }, | |
558 | #endif | |
559 | #ifdef EPROTONOSUPPORT | |
560 | { EPROTONOSUPPORT, 93 }, | |
561 | #endif | |
562 | #ifdef ESOCKTNOSUPPORT | |
563 | { ESOCKTNOSUPPORT, 94 }, | |
564 | #endif | |
565 | #ifdef EOPNOTSUPP | |
566 | { EOPNOTSUPP, 95 }, | |
567 | #endif | |
568 | #ifdef EPFNOSUPPORT | |
569 | { EPFNOSUPPORT, 96 }, | |
570 | #endif | |
571 | #ifdef EAFNOSUPPORT | |
572 | { EAFNOSUPPORT, 97 }, | |
573 | #endif | |
574 | #ifdef EADDRINUSE | |
575 | { EADDRINUSE, 98 }, | |
576 | #endif | |
577 | #ifdef EADDRNOTAVAIL | |
578 | { EADDRNOTAVAIL, 99 }, | |
579 | #endif | |
580 | #ifdef ENETDOWN | |
581 | { ENETDOWN, 100 }, | |
582 | #endif | |
583 | #ifdef ENETUNREACH | |
584 | { ENETUNREACH, 101 }, | |
585 | #endif | |
586 | #ifdef ENETRESET | |
587 | { ENETRESET, 102 }, | |
588 | #endif | |
589 | #ifdef ECONNABORTED | |
590 | { ECONNABORTED, 103 }, | |
591 | #endif | |
592 | #ifdef ECONNRESET | |
593 | { ECONNRESET, 104 }, | |
594 | #endif | |
595 | #ifdef ENOBUFS | |
596 | { ENOBUFS, 105 }, | |
597 | #endif | |
598 | #ifdef EISCONN | |
599 | { EISCONN, 106 }, | |
600 | #endif | |
601 | #ifdef ENOTCONN | |
602 | { ENOTCONN, 107 }, | |
603 | #endif | |
604 | #ifdef ESHUTDOWN | |
605 | { ESHUTDOWN, 108 }, | |
606 | #endif | |
607 | #ifdef ETOOMANYREFS | |
608 | { ETOOMANYREFS, 109 }, | |
609 | #endif | |
610 | #ifdef ETIMEDOUT | |
611 | { ETIMEDOUT, 110 }, | |
612 | #endif | |
613 | #ifdef ECONNREFUSED | |
614 | { ECONNREFUSED, 111 }, | |
615 | #endif | |
616 | #ifdef EHOSTDOWN | |
617 | { EHOSTDOWN, 112 }, | |
618 | #endif | |
619 | #ifdef EHOSTUNREACH | |
620 | { EHOSTUNREACH, 113 }, | |
621 | #endif | |
622 | #ifdef EALREADY | |
623 | { EALREADY, 114 }, | |
624 | #endif | |
625 | #ifdef EINPROGRESS | |
626 | { EINPROGRESS, 115 }, | |
627 | #endif | |
628 | #ifdef ESTALE | |
629 | { ESTALE, 116 }, | |
630 | #endif | |
631 | #ifdef EUCLEAN | |
632 | { EUCLEAN, 117 }, | |
633 | #endif | |
634 | #ifdef ENOTNAM | |
635 | { ENOTNAM, 118 }, | |
636 | #endif | |
637 | #ifdef ENAVAIL | |
638 | { ENAVAIL, 119 }, | |
639 | #endif | |
640 | #ifdef EISNAM | |
641 | { EISNAM, 120 }, | |
642 | #endif | |
643 | #ifdef EREMOTEIO | |
644 | { EREMOTEIO, 121 }, | |
645 | #endif | |
646 | #ifdef EDQUOT | |
647 | { EDQUOT, 122 }, | |
648 | #endif | |
649 | #ifdef ENOMEDIUM | |
650 | { ENOMEDIUM, 123 }, | |
651 | #endif | |
652 | #ifdef EMEDIUMTYPE | |
653 | { EMEDIUMTYPE, 124 }, | |
654 | #endif | |
655 | { 0, -1 } | |
656 | }; | |
657 | ||
658 | /* Extracted by applying | |
659 | perl -ne 'if ($_ =~ /^#define/) { split; | |
660 | printf "#ifdef $_[1]\n { %s, 0x%x },\n#endif\n", | |
661 | $_[1], $_[2] =~ /^0/ ? oct($_[2]) : $_[2];}' | |
662 | on pertinent parts of .../include/asm/fcntl.h in a GNU/Linux/CRIS | |
663 | installation and removing synonyms and unnecessary items. Don't | |
664 | forget the end-marker. */ | |
665 | ||
8b9b39f4 HPN |
666 | /* These we treat specially, as they're used in the fcntl F_GETFL |
667 | syscall. For consistency, open_map is also manually edited to use | |
668 | these macros. */ | |
669 | #define TARGET_O_ACCMODE 0x3 | |
670 | #define TARGET_O_RDONLY 0x0 | |
671 | #define TARGET_O_WRONLY 0x1 | |
ed1f044a | 672 | |
f6bcefef HPN |
673 | static const CB_TARGET_DEFS_MAP open_map[] = { |
674 | #ifdef O_ACCMODE | |
8b9b39f4 | 675 | { O_ACCMODE, TARGET_O_ACCMODE }, |
f6bcefef HPN |
676 | #endif |
677 | #ifdef O_RDONLY | |
8b9b39f4 | 678 | { O_RDONLY, TARGET_O_RDONLY }, |
f6bcefef HPN |
679 | #endif |
680 | #ifdef O_WRONLY | |
8b9b39f4 | 681 | { O_WRONLY, TARGET_O_WRONLY }, |
f6bcefef HPN |
682 | #endif |
683 | #ifdef O_RDWR | |
684 | { O_RDWR, 0x2 }, | |
685 | #endif | |
686 | #ifdef O_CREAT | |
687 | { O_CREAT, 0x40 }, | |
688 | #endif | |
689 | #ifdef O_EXCL | |
690 | { O_EXCL, 0x80 }, | |
691 | #endif | |
692 | #ifdef O_NOCTTY | |
693 | { O_NOCTTY, 0x100 }, | |
694 | #endif | |
695 | #ifdef O_TRUNC | |
696 | { O_TRUNC, 0x200 }, | |
697 | #endif | |
698 | #ifdef O_APPEND | |
699 | { O_APPEND, 0x400 }, | |
700 | #endif | |
701 | #ifdef O_NONBLOCK | |
702 | { O_NONBLOCK, 0x800 }, | |
703 | #endif | |
704 | #ifdef O_NDELAY | |
705 | { O_NDELAY, 0x0 }, | |
706 | #endif | |
707 | #ifdef O_SYNC | |
708 | { O_SYNC, 0x1000 }, | |
709 | #endif | |
710 | #ifdef FASYNC | |
711 | { FASYNC, 0x2000 }, | |
712 | #endif | |
713 | #ifdef O_DIRECT | |
714 | { O_DIRECT, 0x4000 }, | |
715 | #endif | |
716 | #ifdef O_LARGEFILE | |
717 | { O_LARGEFILE, 0x8000 }, | |
718 | #endif | |
719 | #ifdef O_DIRECTORY | |
720 | { O_DIRECTORY, 0x10000 }, | |
721 | #endif | |
722 | #ifdef O_NOFOLLOW | |
723 | { O_NOFOLLOW, 0x20000 }, | |
724 | #endif | |
725 | { -1, -1 } | |
726 | }; | |
727 | ||
728 | /* Needed for the cris_pipe_nonempty and cris_pipe_empty syscalls. */ | |
729 | static SIM_CPU *current_cpu_for_cb_callback; | |
730 | ||
731 | static int syscall_read_mem (host_callback *, struct cb_syscall *, | |
732 | unsigned long, char *, int); | |
733 | static int syscall_write_mem (host_callback *, struct cb_syscall *, | |
734 | unsigned long, const char *, int); | |
735 | static USI create_map (SIM_DESC, struct cris_sim_mmapped_page **, | |
736 | USI addr, USI len); | |
737 | static USI unmap_pages (SIM_DESC, struct cris_sim_mmapped_page **, | |
738 | USI addr, USI len); | |
739 | static USI is_mapped (SIM_DESC, struct cris_sim_mmapped_page **, | |
740 | USI addr, USI len); | |
741 | static void dump_statistics (SIM_CPU *current_cpu); | |
742 | static void make_first_thread (SIM_CPU *current_cpu); | |
743 | ||
744 | /* Read/write functions for system call interface. */ | |
745 | ||
746 | static int | |
747 | syscall_read_mem (host_callback *cb ATTRIBUTE_UNUSED, | |
748 | struct cb_syscall *sc, | |
749 | unsigned long taddr, char *buf, int bytes) | |
750 | { | |
751 | SIM_DESC sd = (SIM_DESC) sc->p1; | |
752 | SIM_CPU *cpu = (SIM_CPU *) sc->p2; | |
753 | ||
754 | return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes); | |
755 | } | |
756 | ||
757 | static int | |
758 | syscall_write_mem (host_callback *cb ATTRIBUTE_UNUSED, | |
759 | struct cb_syscall *sc, | |
760 | unsigned long taddr, const char *buf, int bytes) | |
761 | { | |
762 | SIM_DESC sd = (SIM_DESC) sc->p1; | |
763 | SIM_CPU *cpu = (SIM_CPU *) sc->p2; | |
764 | ||
765 | return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes); | |
766 | } | |
767 | ||
768 | /* When we risk running self-modified code (as in trampolines), this is | |
769 | called from special-case insns. The silicon CRIS CPU:s have enough | |
770 | cache snooping implemented making this a simulator-only issue. Tests: | |
771 | gcc.c-torture/execute/931002-1.c execution, -O3 -g | |
772 | gcc.c-torture/execute/931002-1.c execution, -O3 -fomit-frame-pointer. */ | |
773 | ||
774 | void | |
775 | cris_flush_simulator_decode_cache (SIM_CPU *current_cpu, | |
776 | USI pc ATTRIBUTE_UNUSED) | |
777 | { | |
778 | SIM_DESC sd = CPU_STATE (current_cpu); | |
779 | ||
780 | #if WITH_SCACHE | |
781 | if (USING_SCACHE_P (sd)) | |
782 | scache_flush_cpu (current_cpu); | |
783 | #endif | |
784 | } | |
785 | ||
786 | /* Output statistics at the end of a run. */ | |
787 | static void | |
788 | dump_statistics (SIM_CPU *current_cpu) | |
789 | { | |
790 | SIM_DESC sd = CPU_STATE (current_cpu); | |
791 | CRIS_MISC_PROFILE *profp | |
792 | = CPU_CRIS_MISC_PROFILE (current_cpu); | |
793 | unsigned64 total = profp->basic_cycle_count; | |
794 | const char *textmsg = "Basic clock cycles, total @: %llu\n"; | |
795 | ||
796 | /* The --cris-stats={basic|unaligned|schedulable|all} counts affect | |
797 | what's included in the "total" count only. */ | |
798 | switch (CPU_CRIS_MISC_PROFILE (current_cpu)->flags | |
799 | & FLAG_CRIS_MISC_PROFILE_ALL) | |
800 | { | |
801 | case FLAG_CRIS_MISC_PROFILE_SIMPLE: | |
802 | break; | |
803 | ||
804 | case (FLAG_CRIS_MISC_PROFILE_UNALIGNED | FLAG_CRIS_MISC_PROFILE_SIMPLE): | |
805 | textmsg | |
806 | = "Clock cycles including stall cycles for unaligned accesses @: %llu\n"; | |
807 | total += profp->unaligned_mem_dword_count; | |
808 | break; | |
809 | ||
810 | case (FLAG_CRIS_MISC_PROFILE_SCHEDULABLE | FLAG_CRIS_MISC_PROFILE_SIMPLE): | |
811 | textmsg = "Schedulable clock cycles, total @: %llu\n"; | |
812 | total | |
813 | += (profp->memsrc_stall_count | |
814 | + profp->memraw_stall_count | |
815 | + profp->movemsrc_stall_count | |
816 | + profp->movemdst_stall_count | |
817 | + profp->mulsrc_stall_count | |
818 | + profp->jumpsrc_stall_count | |
819 | + profp->unaligned_mem_dword_count); | |
820 | break; | |
821 | ||
822 | case FLAG_CRIS_MISC_PROFILE_ALL: | |
823 | textmsg = "All accounted clock cycles, total @: %llu\n"; | |
824 | total | |
825 | += (profp->memsrc_stall_count | |
826 | + profp->memraw_stall_count | |
827 | + profp->movemsrc_stall_count | |
828 | + profp->movemdst_stall_count | |
829 | + profp->movemaddr_stall_count | |
830 | + profp->mulsrc_stall_count | |
831 | + profp->jumpsrc_stall_count | |
832 | + profp->branch_stall_count | |
833 | + profp->jumptarget_stall_count | |
834 | + profp->unaligned_mem_dword_count); | |
835 | break; | |
836 | ||
837 | default: | |
838 | abort (); | |
839 | ||
840 | sim_io_eprintf (sd, | |
841 | "Internal inconsistency at %s:%d", | |
842 | __FILE__, __LINE__); | |
843 | sim_engine_halt (sd, current_cpu, NULL, 0, | |
844 | sim_stopped, SIM_SIGILL); | |
845 | } | |
846 | ||
847 | /* Historically, these messages have gone to stderr, so we'll keep it | |
848 | that way. It's also easier to then tell it from normal program | |
849 | output. FIXME: Add redirect option like "run -e file". */ | |
850 | sim_io_eprintf (sd, textmsg, total); | |
851 | ||
852 | /* For v32, unaligned_mem_dword_count should always be 0. For | |
853 | v10, memsrc_stall_count should always be 0. */ | |
854 | sim_io_eprintf (sd, "Memory source stall cycles: %lld\n", | |
855 | profp->memsrc_stall_count | |
856 | + profp->unaligned_mem_dword_count); | |
857 | sim_io_eprintf (sd, "Memory read-after-write stall cycles: %lld\n", | |
858 | profp->memraw_stall_count); | |
859 | sim_io_eprintf (sd, "Movem source stall cycles: %lld\n", | |
860 | profp->movemsrc_stall_count); | |
861 | sim_io_eprintf (sd, "Movem destination stall cycles: %lld\n", | |
862 | profp->movemdst_stall_count); | |
863 | sim_io_eprintf (sd, "Movem address stall cycles: %lld\n", | |
864 | profp->movemaddr_stall_count); | |
865 | sim_io_eprintf (sd, "Multiplication source stall cycles: %lld\n", | |
866 | profp->mulsrc_stall_count); | |
867 | sim_io_eprintf (sd, "Jump source stall cycles: %lld\n", | |
868 | profp->jumpsrc_stall_count); | |
869 | sim_io_eprintf (sd, "Branch misprediction stall cycles: %lld\n", | |
870 | profp->branch_stall_count); | |
871 | sim_io_eprintf (sd, "Jump target stall cycles: %lld\n", | |
872 | profp->jumptarget_stall_count); | |
873 | } | |
874 | ||
875 | /* Check whether any part of [addr .. addr + len - 1] is already mapped. | |
876 | Return 1 if a overlap detected, 0 otherwise. */ | |
877 | ||
878 | static USI | |
879 | is_mapped (SIM_DESC sd ATTRIBUTE_UNUSED, | |
880 | struct cris_sim_mmapped_page **rootp, | |
881 | USI addr, USI len) | |
882 | { | |
883 | struct cris_sim_mmapped_page *mapp; | |
884 | ||
885 | if (len == 0 || (len & 8191)) | |
886 | abort (); | |
887 | ||
888 | /* Iterate over the reverse-address sorted pages until we find a page in | |
889 | or lower than the checked area. */ | |
890 | for (mapp = *rootp; mapp != NULL && mapp->addr >= addr; mapp = mapp->prev) | |
891 | if (mapp->addr < addr + len && mapp->addr >= addr) | |
892 | return 1; | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | /* Create mmapped memory. */ | |
898 | ||
899 | static USI | |
900 | create_map (SIM_DESC sd, struct cris_sim_mmapped_page **rootp, USI addr, | |
901 | USI len) | |
902 | { | |
903 | struct cris_sim_mmapped_page *mapp; | |
904 | struct cris_sim_mmapped_page **higher_prevp = rootp; | |
905 | USI new_addr = 0x40000000; | |
906 | ||
907 | if (addr != 0) | |
908 | new_addr = addr; | |
909 | else if (*rootp) | |
910 | new_addr = rootp[0]->addr + 8192; | |
911 | ||
912 | if (len != 8192) | |
913 | { | |
914 | USI page_addr; | |
915 | ||
916 | if (len & 8191) | |
917 | /* Which is better: return an error for this, or just round it up? */ | |
918 | abort (); | |
919 | ||
920 | /* Do a recursive call for each page in the request. */ | |
921 | for (page_addr = new_addr; len != 0; page_addr += 8192, len -= 8192) | |
922 | if (create_map (sd, rootp, page_addr, 8192) >= (USI) -8191) | |
923 | abort (); | |
924 | ||
925 | return new_addr; | |
926 | } | |
927 | ||
928 | for (mapp = *rootp; | |
929 | mapp != NULL && mapp->addr > new_addr; | |
930 | mapp = mapp->prev) | |
931 | higher_prevp = &mapp->prev; | |
932 | ||
933 | /* Allocate the new page, on the next higher page from the last one | |
934 | allocated, and link in the new descriptor before previous ones. */ | |
935 | mapp = malloc (sizeof (*mapp)); | |
936 | ||
937 | if (mapp == NULL) | |
938 | return (USI) -ENOMEM; | |
939 | ||
940 | sim_core_attach (sd, NULL, 0, access_read_write_exec, 0, | |
941 | new_addr, len, | |
942 | 0, NULL, NULL); | |
943 | ||
944 | mapp->addr = new_addr; | |
945 | mapp->prev = *higher_prevp; | |
946 | *higher_prevp = mapp; | |
947 | ||
948 | return new_addr; | |
949 | } | |
950 | ||
951 | /* Unmap one or more pages. */ | |
952 | ||
953 | static USI | |
954 | unmap_pages (SIM_DESC sd, struct cris_sim_mmapped_page **rootp, USI addr, | |
955 | USI len) | |
956 | { | |
957 | struct cris_sim_mmapped_page *mapp; | |
958 | struct cris_sim_mmapped_page **higher_prevp = rootp; | |
959 | ||
960 | if (len != 8192) | |
961 | { | |
962 | USI page_addr; | |
963 | ||
964 | if (len & 8191) | |
965 | /* Which is better: return an error for this, or just round it up? */ | |
966 | abort (); | |
967 | ||
968 | /* Loop backwards to make each call is O(1) over the number of pages | |
969 | allocated, if we're unmapping from the high end of the pages. */ | |
970 | for (page_addr = addr + len - 8192; | |
971 | page_addr >= addr; | |
972 | page_addr -= 8192) | |
973 | if (unmap_pages (sd, rootp, page_addr, 8192) != 0) | |
974 | abort (); | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
979 | for (mapp = *rootp; mapp != NULL && mapp->addr > addr; mapp = mapp->prev) | |
980 | higher_prevp = &mapp->prev; | |
981 | ||
982 | if (mapp == NULL || mapp->addr != addr) | |
983 | return EINVAL; | |
984 | ||
985 | *higher_prevp = mapp->prev; | |
986 | sim_core_detach (sd, NULL, 0, 0, addr); | |
987 | free (mapp); | |
988 | return 0; | |
989 | } | |
990 | ||
991 | /* The semantic code invokes this for illegal (unrecognized) instructions. */ | |
992 | ||
993 | SEM_PC | |
994 | sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc) | |
995 | { | |
996 | SIM_DESC sd = CPU_STATE (current_cpu); | |
997 | ||
998 | sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL); | |
999 | return vpc; | |
1000 | } | |
1001 | ||
1002 | /* Handlers from the CGEN description that should not be called. */ | |
1003 | ||
1004 | USI | |
1005 | cris_bmod_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, | |
1006 | UINT srcreg ATTRIBUTE_UNUSED, | |
1007 | USI dstreg ATTRIBUTE_UNUSED) | |
1008 | { | |
1009 | abort (); | |
1010 | } | |
1011 | ||
1012 | void | |
1013 | h_supr_set_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, | |
1014 | UINT index ATTRIBUTE_UNUSED, | |
1015 | USI page ATTRIBUTE_UNUSED, | |
1016 | USI newval ATTRIBUTE_UNUSED) | |
1017 | { | |
1018 | abort (); | |
1019 | } | |
1020 | ||
1021 | USI | |
1022 | h_supr_get_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, | |
1023 | UINT index ATTRIBUTE_UNUSED, | |
1024 | USI page ATTRIBUTE_UNUSED) | |
1025 | { | |
1026 | abort (); | |
1027 | } | |
1028 | ||
1029 | /* Swap one context for another. */ | |
1030 | ||
1031 | static void | |
1032 | schedule (SIM_CPU *current_cpu, int next) | |
1033 | { | |
1034 | /* Need to mark context-switches in the trace output. */ | |
1035 | if ((CPU_CRIS_MISC_PROFILE (current_cpu)->flags | |
1036 | & FLAG_CRIS_MISC_PROFILE_XSIM_TRACE)) | |
1037 | cris_trace_printf (CPU_STATE (current_cpu), current_cpu, | |
1038 | "\t#:%d\n", next); | |
1039 | ||
1040 | /* Copy the current context (if there is one) to its slot. */ | |
1041 | if (current_cpu->thread_data[current_cpu->threadno].cpu_context) | |
1042 | memcpy (current_cpu->thread_data[current_cpu->threadno].cpu_context, | |
1043 | ¤t_cpu->cpu_data_placeholder, | |
1044 | current_cpu->thread_cpu_data_size); | |
1045 | ||
1046 | /* Copy the new context from its slot. */ | |
1047 | memcpy (¤t_cpu->cpu_data_placeholder, | |
1048 | current_cpu->thread_data[next].cpu_context, | |
1049 | current_cpu->thread_cpu_data_size); | |
1050 | ||
1051 | /* Update needed stuff to indicate the new context. */ | |
1052 | current_cpu->threadno = next; | |
1053 | ||
1054 | /* Handle pending signals. */ | |
1055 | if (current_cpu->thread_data[next].sigpending | |
1056 | /* We don't run nested signal handlers. This means that pause(2) | |
1057 | and sigsuspend(2) do not work in sighandlers, but that | |
1058 | shouldn't be too hard a restriction. It also greatly | |
1059 | simplifies the code. */ | |
1060 | && current_cpu->thread_data[next].cpu_context_atsignal == NULL) | |
1061 | { | |
1062 | int sig; | |
1063 | ||
1064 | /* See if there's really a pending, non-blocked handler. We don't | |
1065 | queue signals, so just use the first one in ascending order. */ | |
1066 | for (sig = 0; sig < 64; sig++) | |
1067 | if (current_cpu->thread_data[next].sigdata[sig].pending | |
1068 | && !current_cpu->thread_data[next].sigdata[sig].blocked) | |
1069 | { | |
1070 | bfd_byte regbuf[4]; | |
1071 | USI sp; | |
1072 | int i; | |
1073 | USI blocked; | |
1074 | USI pc = sim_pc_get (current_cpu); | |
1075 | ||
1076 | /* It's simpler to save the CPU context inside the simulator | |
1077 | than on the stack. */ | |
1078 | current_cpu->thread_data[next].cpu_context_atsignal | |
1079 | = (*current_cpu | |
1080 | ->make_thread_cpu_data) (current_cpu, | |
1081 | current_cpu->thread_data[next] | |
1082 | .cpu_context); | |
1083 | ||
1084 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_SP, regbuf, 4); | |
1085 | sp = bfd_getl32 (regbuf); | |
1086 | ||
1087 | /* Make sure we have an aligned stack. */ | |
1088 | sp &= ~3; | |
1089 | ||
1090 | /* Make room for the signal frame, aligned. FIXME: Check that | |
1091 | the memory exists, map it in if absent. (BTW, should also | |
1092 | implement on-access automatic stack allocation). */ | |
1093 | sp -= 20; | |
1094 | ||
1095 | /* This isn't the same signal frame as the kernel uses, because | |
1096 | we don't want to bother getting all registers on and off the | |
1097 | stack. */ | |
1098 | ||
1099 | /* First, we store the currently blocked signals. */ | |
1100 | blocked = 0; | |
1101 | for (i = 0; i < 32; i++) | |
1102 | blocked | |
1103 | |= current_cpu->thread_data[next].sigdata[i + 1].blocked << i; | |
1104 | sim_core_write_aligned_4 (current_cpu, pc, 0, sp, blocked); | |
1105 | blocked = 0; | |
1106 | for (i = 0; i < 31; i++) | |
1107 | blocked | |
1108 | |= current_cpu->thread_data[next].sigdata[i + 33].blocked << i; | |
1109 | sim_core_write_aligned_4 (current_cpu, pc, 0, sp + 4, blocked); | |
1110 | ||
1111 | /* Then, the actual instructions. This is CPU-specific, but we | |
1112 | use instructions from the common subset for v10 and v32 which | |
1113 | should be safe for the time being but could be parametrized | |
1114 | if need be. */ | |
1115 | /* MOVU.W [PC+],R9. */ | |
1116 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 8, 0x9c5f); | |
1117 | /* .WORD TARGET_SYS_sigreturn. */ | |
1118 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 10, | |
1119 | TARGET_SYS_sigreturn); | |
1120 | /* BREAK 13. */ | |
1121 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 12, 0xe93d); | |
1122 | ||
1123 | /* NOP (on v32; it's SETF on v10, but is the correct compatible | |
1124 | instruction. Still, it doesn't matter because v10 has no | |
1125 | delay slot for BREAK so it will not be executed). */ | |
1126 | sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 16, 0x05b0); | |
1127 | ||
1128 | /* Modify registers to hold the right values for the sighandler | |
1129 | context: updated stackpointer and return address pointing to | |
1130 | the sigreturn stub. */ | |
1131 | bfd_putl32 (sp, regbuf); | |
1132 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_SP, regbuf, 4); | |
1133 | bfd_putl32 (sp + 8, regbuf); | |
1134 | (*CPU_REG_STORE (current_cpu)) (current_cpu, TARGET_SRP_REGNUM, | |
1135 | regbuf, 4); | |
1136 | ||
1137 | current_cpu->thread_data[next].sigdata[sig].pending = 0; | |
1138 | ||
1139 | /* Block this signal (for the duration of the sighandler). */ | |
1140 | current_cpu->thread_data[next].sigdata[sig].blocked = 1; | |
1141 | ||
1142 | sim_pc_set (current_cpu, current_cpu->sighandler[sig]); | |
1143 | bfd_putl32 (sig, regbuf); | |
1144 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R10, | |
1145 | regbuf, 4); | |
1146 | ||
1147 | /* We ignore a SA_SIGINFO flag in the sigaction call; the code I | |
1148 | needed all this for, specifies a SA_SIGINFO call but treats it | |
1149 | like an ordinary sighandler; only the signal number argument is | |
1150 | inspected. To make future need to implement SA_SIGINFO | |
1151 | correctly possible, we set the siginfo argument register to a | |
1152 | magic (hopefully non-address) number. (NB: then, you should | |
1153 | just need to pass the siginfo argument; it seems you probably | |
1154 | don't need to implement the specific rt_sigreturn.) */ | |
1155 | bfd_putl32 (0xbad5161f, regbuf); | |
1156 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R11, | |
1157 | regbuf, 4); | |
1158 | ||
1159 | /* The third argument is unused and the kernel sets it to 0. */ | |
1160 | bfd_putl32 (0, regbuf); | |
1161 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R12, | |
1162 | regbuf, 4); | |
1163 | return; | |
1164 | } | |
1165 | ||
1166 | /* No, there actually was no pending signal for this thread. Reset | |
1167 | this flag. */ | |
1168 | current_cpu->thread_data[next].sigpending = 0; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | /* Reschedule the simplest possible way until something else is absolutely | |
1173 | necessary: | |
1174 | - A. Find the next process (round-robin) that doesn't have at_syscall | |
1175 | set, schedule it. | |
1176 | - B. If there is none, just run the next process, round-robin. | |
1177 | - Clear at_syscall for the current process. */ | |
1178 | ||
1179 | static void | |
1180 | reschedule (SIM_CPU *current_cpu) | |
1181 | { | |
1182 | int i; | |
1183 | ||
1184 | /* Iterate over all thread slots, because after a few thread creations | |
1185 | and exits, we don't know where the live ones are. */ | |
1186 | for (i = (current_cpu->threadno + 1) % SIM_TARGET_MAX_THREADS; | |
1187 | i != current_cpu->threadno; | |
1188 | i = (i + 1) % SIM_TARGET_MAX_THREADS) | |
1189 | if (current_cpu->thread_data[i].cpu_context | |
1190 | && current_cpu->thread_data[i].at_syscall == 0) | |
1191 | { | |
1192 | schedule (current_cpu, i); | |
1193 | return; | |
1194 | } | |
1195 | ||
1196 | /* Pick any next live thread. */ | |
1197 | for (i = (current_cpu->threadno + 1) % SIM_TARGET_MAX_THREADS; | |
1198 | i != current_cpu->threadno; | |
1199 | i = (i + 1) % SIM_TARGET_MAX_THREADS) | |
1200 | if (current_cpu->thread_data[i].cpu_context) | |
1201 | { | |
1202 | schedule (current_cpu, i); | |
1203 | return; | |
1204 | } | |
1205 | ||
1206 | /* More than one live thread, but we couldn't find the next one? */ | |
1207 | abort (); | |
1208 | } | |
1209 | ||
1210 | /* Set up everything to receive (or IGN) an incoming signal to the | |
1211 | current context. */ | |
1212 | ||
1213 | static int | |
1214 | deliver_signal (SIM_CPU *current_cpu, int sig, unsigned int pid) | |
1215 | { | |
1216 | int i; | |
1217 | USI pc = sim_pc_get (current_cpu); | |
1218 | ||
1219 | /* Find the thread index of the pid. */ | |
1220 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
1221 | /* Apparently it's ok to send signals to zombies (so a check for | |
1222 | current_cpu->thread_data[i].cpu_context != NULL would be | |
1223 | wrong). */ | |
1224 | if (current_cpu->thread_data[i].threadid == pid - TARGET_PID) | |
1225 | { | |
1226 | if (sig < 64) | |
1227 | switch (current_cpu->sighandler[sig]) | |
1228 | { | |
1229 | case TARGET_SIG_DFL: | |
1230 | switch (sig) | |
1231 | { | |
1232 | /* The following according to the glibc | |
1233 | documentation. (The kernel code has non-obvious | |
1234 | execution paths.) */ | |
1235 | case TARGET_SIGFPE: | |
1236 | case TARGET_SIGILL: | |
1237 | case TARGET_SIGSEGV: | |
1238 | case TARGET_SIGBUS: | |
1239 | case TARGET_SIGABRT: | |
1240 | case TARGET_SIGTRAP: | |
1241 | case TARGET_SIGSYS: | |
1242 | ||
1243 | case TARGET_SIGTERM: | |
1244 | case TARGET_SIGINT: | |
1245 | case TARGET_SIGQUIT: | |
1246 | case TARGET_SIGKILL: | |
1247 | case TARGET_SIGHUP: | |
1248 | ||
1249 | case TARGET_SIGALRM: | |
1250 | case TARGET_SIGVTALRM: | |
1251 | case TARGET_SIGPROF: | |
1252 | case TARGET_SIGSTOP: | |
1253 | ||
1254 | case TARGET_SIGPIPE: | |
1255 | case TARGET_SIGLOST: | |
1256 | case TARGET_SIGXCPU: | |
1257 | case TARGET_SIGXFSZ: | |
1258 | case TARGET_SIGUSR1: | |
1259 | case TARGET_SIGUSR2: | |
1260 | sim_io_eprintf (CPU_STATE (current_cpu), | |
1261 | "Exiting pid %d due to signal %d\n", | |
1262 | pid, sig); | |
1263 | sim_engine_halt (CPU_STATE (current_cpu), current_cpu, | |
1264 | NULL, pc, sim_stopped, | |
1265 | sig == TARGET_SIGABRT | |
1266 | ? SIM_SIGABRT : SIM_SIGILL); | |
1267 | return 0; | |
1268 | ||
1269 | /* The default for all other signals is to be ignored. */ | |
1270 | default: | |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | case TARGET_SIG_IGN: | |
1275 | switch (sig) | |
1276 | { | |
1277 | case TARGET_SIGKILL: | |
1278 | case TARGET_SIGSTOP: | |
1279 | /* Can't ignore these signals. */ | |
1280 | sim_io_eprintf (CPU_STATE (current_cpu), | |
1281 | "Exiting pid %d due to signal %d\n", | |
1282 | pid, sig); | |
1283 | sim_engine_halt (CPU_STATE (current_cpu), current_cpu, | |
1284 | NULL, pc, sim_stopped, SIM_SIGILL); | |
1285 | return 0; | |
1286 | ||
1287 | default: | |
1288 | return 0; | |
1289 | } | |
1290 | break; | |
1291 | ||
1292 | default: | |
1293 | /* Mark the signal as pending, making schedule () check | |
1294 | closer. The signal will be handled when the thread is | |
1295 | scheduled and the signal is unblocked. */ | |
1296 | current_cpu->thread_data[i].sigdata[sig].pending = 1; | |
1297 | current_cpu->thread_data[i].sigpending = 1; | |
1298 | return 0; | |
1299 | } | |
1300 | else | |
1301 | { | |
1302 | sim_io_eprintf (CPU_STATE (current_cpu), | |
1303 | "Unimplemented signal: %d\n", sig); | |
1304 | sim_engine_halt (CPU_STATE (current_cpu), current_cpu, NULL, pc, | |
1305 | sim_stopped, SIM_SIGILL); | |
1306 | } | |
1307 | } | |
1308 | ||
1309 | return | |
1310 | -cb_host_to_target_errno (STATE_CALLBACK (CPU_STATE (current_cpu)), | |
1311 | ESRCH); | |
1312 | } | |
1313 | ||
1314 | /* Make the vector and the first item, the main thread. */ | |
1315 | ||
1316 | static void | |
1317 | make_first_thread (SIM_CPU *current_cpu) | |
1318 | { | |
1319 | current_cpu->thread_data | |
1320 | = xcalloc (1, | |
1321 | SIM_TARGET_MAX_THREADS | |
1322 | * sizeof (current_cpu->thread_data[0])); | |
1323 | current_cpu->thread_data[0].cpu_context | |
1324 | = (*current_cpu->make_thread_cpu_data) (current_cpu, | |
1325 | ¤t_cpu | |
1326 | ->cpu_data_placeholder); | |
1327 | current_cpu->thread_data[0].parent_threadid = -1; | |
1328 | ||
1329 | /* For good measure. */ | |
1330 | if (TARGET_SIG_DFL != 0) | |
1331 | abort (); | |
1332 | } | |
1333 | ||
1334 | /* Main function: the handler of the "break 13" syscall insn. */ | |
1335 | ||
1336 | USI | |
1337 | cris_break_13_handler (SIM_CPU *current_cpu, USI callnum, USI arg1, | |
1338 | USI arg2, USI arg3, USI arg4, USI arg5, USI arg6, | |
1339 | USI pc) | |
1340 | { | |
1341 | CB_SYSCALL s; | |
1342 | SIM_DESC sd = CPU_STATE (current_cpu); | |
1343 | host_callback *cb = STATE_CALLBACK (sd); | |
1344 | int retval; | |
1345 | int threadno = current_cpu->threadno; | |
1346 | ||
1347 | current_cpu->syscalls++; | |
1348 | ||
1349 | CB_SYSCALL_INIT (&s); | |
1350 | s.func = callnum; | |
1351 | s.arg1 = arg1; | |
1352 | s.arg2 = arg2; | |
1353 | s.arg3 = arg3; | |
1354 | ||
1355 | if (callnum == TARGET_SYS_exit && current_cpu->m1threads == 0) | |
1356 | { | |
1357 | if (CPU_CRIS_MISC_PROFILE (current_cpu)->flags | |
1358 | & FLAG_CRIS_MISC_PROFILE_ALL) | |
1359 | dump_statistics (current_cpu); | |
1360 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1); | |
1361 | } | |
1362 | ||
1363 | s.p1 = (PTR) sd; | |
1364 | s.p2 = (PTR) current_cpu; | |
1365 | s.read_mem = syscall_read_mem; | |
1366 | s.write_mem = syscall_write_mem; | |
1367 | ||
1368 | current_cpu_for_cb_callback = current_cpu; | |
1369 | ||
1370 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1371 | { | |
1372 | abort (); | |
1373 | sim_io_eprintf (sd, "Break 13: invalid %d? Returned %ld\n", callnum, | |
1374 | s.result); | |
1375 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL); | |
1376 | } | |
1377 | ||
1378 | retval = s.result == -1 ? -s.errcode : s.result; | |
1379 | ||
1380 | if (s.errcode != 0 && s.errcode == cb_host_to_target_errno (cb, ENOSYS)) | |
1381 | { | |
1382 | /* If the generic simulator call said ENOSYS, then let's try the | |
1383 | ones we know ourselves. | |
1384 | ||
1385 | The convention is to provide *very limited* functionality on an | |
1386 | as-needed basis, only what's covered by the test-suite, tests | |
1387 | added when functionality changes and abort with a descriptive | |
1388 | message for *everything* else. Where there's no test-case, we | |
1389 | just abort. */ | |
1390 | switch (callnum) | |
1391 | { | |
1392 | case 0: | |
1393 | /* It's a pretty safe bet that the "old setup() system call" | |
1394 | number will not be re-used; we can't say the same for higher | |
1395 | numbers. We treat this simulator-generated call as "wait | |
1396 | forever"; we re-run this insn. The wait is ended by a | |
1397 | callback. Sanity check that this is the reason we got | |
1398 | here. */ | |
1399 | if (current_cpu->thread_data == NULL | |
1400 | || (current_cpu->thread_data[threadno].pipe_write_fd == 0)) | |
1401 | goto unimplemented_syscall; | |
1402 | ||
1403 | sim_pc_set (current_cpu, pc); | |
1404 | retval = arg1; | |
1405 | break; | |
1406 | ||
1407 | case TARGET_SYS_fcntl64: | |
1408 | case TARGET_SYS_fcntl: | |
ed1f044a | 1409 | switch (arg2) |
f6bcefef | 1410 | { |
ed1f044a | 1411 | case 1: |
f6bcefef HPN |
1412 | /* F_GETFD. |
1413 | Glibc checks stdin, stdout and stderr fd:s for | |
1414 | close-on-exec security sanity. We just need to provide a | |
1415 | OK return value. If we really need to have a | |
1416 | close-on-exec flag true, we could just do a real fcntl | |
1417 | here. */ | |
1418 | retval = 0; | |
ed1f044a HPN |
1419 | break; |
1420 | ||
1421 | case 2: | |
f6bcefef HPN |
1422 | /* F_SETFD. Just ignore attempts to set the close-on-exec |
1423 | flag. */ | |
1424 | retval = 0; | |
ed1f044a HPN |
1425 | break; |
1426 | ||
1427 | case 3: | |
1428 | /* F_GETFL. Check for the special case for open+fdopen. */ | |
1429 | if (current_cpu->last_syscall == TARGET_SYS_open | |
1430 | && arg1 == current_cpu->last_open_fd) | |
1431 | { | |
1432 | retval = current_cpu->last_open_flags & TARGET_O_ACCMODE; | |
1433 | break; | |
1434 | } | |
8b9b39f4 HPN |
1435 | else if (arg1 == 0) |
1436 | { | |
1437 | /* Because we can't freopen fd:s 0, 1, 2 to mean | |
1438 | something else than stdin, stdout and stderr | |
1439 | (sim/common/syscall.c:cb_syscall special cases fd | |
1440 | 0, 1 and 2), we know what flags that we can | |
1441 | sanely return for these fd:s. */ | |
1442 | retval = TARGET_O_RDONLY; | |
1443 | break; | |
1444 | } | |
1445 | else if (arg1 == 1 || arg1 == 2) | |
1446 | { | |
1447 | retval = TARGET_O_WRONLY; | |
1448 | break; | |
1449 | } | |
ed1f044a | 1450 | /* FALLTHROUGH */ |
ed1f044a | 1451 | default: |
8b9b39f4 | 1452 | /* Abort for all other cases. */ |
ed1f044a HPN |
1453 | sim_io_eprintf (sd, "Unimplemented %s syscall " |
1454 | "(fd: 0x%lx: cmd: 0x%lx arg: 0x%lx)\n", | |
1455 | callnum == TARGET_SYS_fcntl | |
1456 | ? "fcntl" : "fcntl64", | |
1457 | (unsigned long) (USI) arg1, | |
1458 | (unsigned long) (USI) arg2, | |
1459 | (unsigned long) (USI) arg3); | |
1460 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
1461 | SIM_SIGILL); | |
1462 | break; | |
f6bcefef HPN |
1463 | } |
1464 | break; | |
1465 | ||
1466 | case TARGET_SYS_uname: | |
1467 | { | |
1468 | /* Fill in a few constants to appease glibc. */ | |
1469 | static const char sim_utsname[6][65] = | |
1470 | { | |
1471 | "Linux", | |
1472 | "sim-target", | |
1473 | "2.4.5", | |
1474 | TARGET_UTSNAME, | |
1475 | "cris", | |
1476 | "localdomain" | |
1477 | }; | |
1478 | ||
1479 | if ((s.write_mem) (cb, &s, arg1, (const char *) sim_utsname, | |
1480 | sizeof (sim_utsname)) | |
1481 | != sizeof (sim_utsname)) | |
1482 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
1483 | else | |
1484 | retval = 0; | |
1485 | break; | |
1486 | } | |
1487 | ||
1488 | case TARGET_SYS_geteuid32: | |
1489 | /* We tell the truth with these. Maybe we shouldn't, but it | |
1490 | should match the "stat" information. */ | |
1491 | retval = geteuid (); | |
1492 | break; | |
1493 | ||
1494 | case TARGET_SYS_getuid32: | |
1495 | retval = getuid (); | |
1496 | break; | |
1497 | ||
1498 | case TARGET_SYS_getegid32: | |
1499 | retval = getegid (); | |
1500 | break; | |
1501 | ||
1502 | case TARGET_SYS_getgid32: | |
1503 | retval = getgid (); | |
1504 | break; | |
1505 | ||
1506 | case TARGET_SYS_brk: | |
1507 | /* Most often, we just return the argument, like the Linux | |
1508 | kernel. */ | |
1509 | retval = arg1; | |
1510 | ||
1511 | if (arg1 == 0) | |
1512 | retval = current_cpu->endbrk; | |
1513 | else if (arg1 <= current_cpu->endmem) | |
1514 | current_cpu->endbrk = arg1; | |
1515 | else | |
1516 | { | |
1517 | USI new_end = (arg1 + 8191) & ~8191; | |
1518 | ||
1519 | /* If the simulator wants to brk more than a certain very | |
1520 | large amount, something is wrong. FIXME: Return an error | |
1521 | or abort? Have command-line selectable? */ | |
1522 | if (new_end - current_cpu->endmem > SIM_MAX_ALLOC_CHUNK) | |
1523 | { | |
1524 | current_cpu->endbrk = current_cpu->endmem; | |
1525 | retval = current_cpu->endmem; | |
1526 | break; | |
1527 | } | |
1528 | ||
1529 | sim_core_attach (sd, NULL, 0, access_read_write_exec, 0, | |
1530 | current_cpu->endmem, | |
1531 | new_end - current_cpu->endmem, | |
1532 | 0, NULL, NULL); | |
1533 | current_cpu->endbrk = arg1; | |
1534 | current_cpu->endmem = new_end; | |
1535 | } | |
1536 | break; | |
1537 | ||
1538 | case TARGET_SYS_getpid: | |
1539 | /* Correct until CLONE_THREAD is implemented. */ | |
1540 | retval = current_cpu->thread_data == NULL | |
1541 | ? TARGET_PID | |
1542 | : TARGET_PID + current_cpu->thread_data[threadno].threadid; | |
1543 | break; | |
1544 | ||
1545 | case TARGET_SYS_getppid: | |
1546 | /* Correct until CLONE_THREAD is implemented. */ | |
1547 | retval = current_cpu->thread_data == NULL | |
1548 | ? TARGET_PID - 1 | |
1549 | : (TARGET_PID | |
1550 | + current_cpu->thread_data[threadno].parent_threadid); | |
1551 | break; | |
1552 | ||
1553 | case TARGET_SYS_mmap2: | |
1554 | { | |
1555 | USI addr = arg1; | |
1556 | USI len = arg2; | |
1557 | USI prot = arg3; | |
1558 | USI flags = arg4; | |
1559 | USI fd = arg5; | |
1560 | USI pgoff = arg6; | |
1561 | ||
1562 | /* If the simulator wants to mmap more than the very large | |
1563 | limit, something is wrong. FIXME: Return an error or | |
1564 | abort? Have command-line selectable? */ | |
1565 | if (len > SIM_MAX_ALLOC_CHUNK) | |
1566 | { | |
1567 | retval = -cb_host_to_target_errno (cb, ENOMEM); | |
1568 | break; | |
1569 | } | |
1570 | ||
1571 | if ((prot != (TARGET_PROT_READ | TARGET_PROT_WRITE) | |
1572 | && (prot | |
1573 | != (TARGET_PROT_READ | |
1574 | | TARGET_PROT_WRITE | |
1575 | | TARGET_PROT_EXEC)) | |
1576 | && prot != TARGET_PROT_READ) | |
1577 | || (flags != (TARGET_MAP_ANONYMOUS | TARGET_MAP_PRIVATE) | |
1578 | && flags != TARGET_MAP_PRIVATE | |
1579 | && flags != TARGET_MAP_SHARED) | |
1580 | || (fd != (USI) -1 && prot != TARGET_PROT_READ) | |
69308976 | 1581 | || pgoff != 0) |
f6bcefef HPN |
1582 | { |
1583 | sim_io_eprintf (sd, "Unimplemented mmap2 call " | |
1584 | "(0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx)\n", | |
1585 | (unsigned long) arg1, | |
1586 | (unsigned long) arg2, | |
1587 | (unsigned long) arg3, | |
1588 | (unsigned long) arg4, | |
1589 | (unsigned long) arg5, | |
1590 | (unsigned long) arg6); | |
1591 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
1592 | SIM_SIGILL); | |
1593 | break; | |
1594 | } | |
1595 | else if (fd != (USI) -1) | |
1596 | { | |
1597 | /* Map a file. */ | |
1598 | ||
1599 | USI newaddr; | |
1600 | USI pos; | |
1601 | ||
1602 | /* A non-aligned argument is allowed for files. */ | |
1603 | USI newlen = (len + 8191) & ~8191; | |
1604 | ||
1605 | /* We only support read, which we should already have | |
1606 | checked. Check again anyway. */ | |
1607 | if (prot != TARGET_PROT_READ) | |
1608 | abort (); | |
1609 | ||
1610 | newaddr | |
1611 | = create_map (sd, ¤t_cpu->highest_mmapped_page, addr, | |
1612 | newlen); | |
1613 | ||
1614 | if (newaddr >= (USI) -8191) | |
1615 | { | |
1616 | abort (); | |
1617 | retval = -cb_host_to_target_errno (cb, -(SI) newaddr); | |
1618 | break; | |
1619 | } | |
1620 | ||
1621 | /* Find the current position in the file. */ | |
1622 | s.func = TARGET_SYS_lseek; | |
1623 | s.arg1 = fd; | |
1624 | s.arg2 = 0; | |
1625 | s.arg3 = SEEK_CUR; | |
1626 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1627 | abort (); | |
1628 | pos = s.result; | |
1629 | ||
1630 | if (s.result < 0) | |
1631 | abort (); | |
1632 | ||
1633 | /* Use the standard read callback to read in "len" | |
1634 | bytes. */ | |
1635 | s.func = TARGET_SYS_read; | |
1636 | s.arg1 = fd; | |
1637 | s.arg2 = newaddr; | |
1638 | s.arg3 = len; | |
1639 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1640 | abort (); | |
1641 | ||
1642 | if ((USI) s.result != len) | |
1643 | abort (); | |
1644 | ||
1645 | /* After reading, we need to go back to the previous | |
1646 | position in the file. */ | |
1647 | s.func = TARGET_SYS_lseek; | |
1648 | s.arg1 = fd; | |
1649 | s.arg2 = pos; | |
1650 | s.arg3 = SEEK_SET; | |
1651 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
1652 | abort (); | |
1653 | if (pos != (USI) s.result) | |
1654 | abort (); | |
1655 | ||
1656 | retval = newaddr; | |
1657 | } | |
1658 | else | |
1659 | { | |
1660 | USI newaddr | |
69308976 HPN |
1661 | = create_map (sd, ¤t_cpu->highest_mmapped_page, addr, |
1662 | (len + 8191) & ~8191); | |
f6bcefef HPN |
1663 | |
1664 | if (newaddr >= (USI) -8191) | |
1665 | retval = -cb_host_to_target_errno (cb, -(SI) newaddr); | |
1666 | else | |
1667 | retval = newaddr; | |
1668 | } | |
1669 | break; | |
1670 | } | |
1671 | ||
1672 | case TARGET_SYS_mprotect: | |
1673 | { | |
1674 | /* We only cover the case of linuxthreads mprotecting out its | |
1675 | stack guard page. */ | |
1676 | USI addr = arg1; | |
1677 | USI len = arg2; | |
1678 | USI prot = arg3; | |
1679 | ||
1680 | if ((addr & 8191) != 0 | |
1681 | || len != 8192 | |
1682 | || prot != TARGET_PROT_NONE | |
1683 | || !is_mapped (sd, ¤t_cpu->highest_mmapped_page, addr, | |
1684 | len)) | |
1685 | { | |
1686 | sim_io_eprintf (sd, "Unimplemented mprotect call " | |
1687 | "(0x%lx, 0x%lx, 0x%lx)\n", | |
1688 | (unsigned long) arg1, | |
1689 | (unsigned long) arg2, | |
1690 | (unsigned long) arg3); | |
1691 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
1692 | SIM_SIGILL); | |
1693 | break; | |
1694 | } | |
1695 | ||
1696 | /* FIXME: We should account for pages like this that are | |
1697 | "mprotected out". For now, we just tell the simulator | |
1698 | core to remove that page from its map. */ | |
1699 | sim_core_detach (sd, NULL, 0, 0, addr); | |
1700 | retval = 0; | |
1701 | break; | |
1702 | } | |
1703 | ||
1704 | case TARGET_SYS_ioctl: | |
1705 | { | |
1706 | /* We support only a very limited functionality: checking | |
1707 | stdout with TCGETS to perform the isatty function. The | |
1708 | TCGETS ioctl isn't actually performed or the result used by | |
1709 | an isatty () caller in a "hello, world" program; only the | |
1710 | return value is then used. Maybe we shouldn't care about | |
1711 | the environment of the simulator regarding isatty, but | |
1712 | that's been working before, in the xsim simulator. */ | |
1713 | if (arg2 == TARGET_TCGETS && arg1 == 1) | |
1714 | retval = isatty (1) ? 0 : cb_host_to_target_errno (cb, EINVAL); | |
1715 | else | |
1716 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
1717 | break; | |
1718 | } | |
1719 | ||
1720 | case TARGET_SYS_munmap: | |
1721 | { | |
1722 | USI addr = arg1; | |
1723 | USI len = arg2; | |
1724 | USI result | |
1725 | = unmap_pages (sd, ¤t_cpu->highest_mmapped_page, addr, | |
1726 | len); | |
1727 | retval = result != 0 ? -cb_host_to_target_errno (cb, result) : 0; | |
1728 | break; | |
1729 | } | |
1730 | ||
1731 | case TARGET_SYS_wait4: | |
1732 | { | |
1733 | int i; | |
1734 | USI pid = arg1; | |
1735 | USI saddr = arg2; | |
1736 | USI options = arg3; | |
1737 | USI rusagep = arg4; | |
1738 | ||
1739 | /* FIXME: We're not properly implementing __WCLONE, and we | |
1740 | don't really need the special casing so we might as well | |
1741 | make this general. */ | |
1742 | if ((!(pid == (USI) -1 | |
1743 | && options == (TARGET___WCLONE | TARGET_WNOHANG) | |
1744 | && saddr != 0) | |
1745 | && !(pid > 0 | |
1746 | && (options == TARGET___WCLONE | |
1747 | || options == TARGET___WALL))) | |
1748 | || rusagep != 0 | |
1749 | || current_cpu->thread_data == NULL) | |
1750 | { | |
1751 | sim_io_eprintf (sd, "Unimplemented wait4 call " | |
1752 | "(0x%lx, 0x%lx, 0x%lx, 0x%lx)\n", | |
1753 | (unsigned long) arg1, | |
1754 | (unsigned long) arg2, | |
1755 | (unsigned long) arg3, | |
1756 | (unsigned long) arg4); | |
1757 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
1758 | SIM_SIGILL); | |
1759 | break; | |
1760 | } | |
1761 | ||
1762 | if (pid == (USI) -1) | |
1763 | for (i = 1; i < SIM_TARGET_MAX_THREADS; i++) | |
1764 | { | |
1765 | if (current_cpu->thread_data[threadno].threadid | |
1766 | == current_cpu->thread_data[i].parent_threadid | |
1767 | && current_cpu->thread_data[i].threadid != 0 | |
1768 | && current_cpu->thread_data[i].cpu_context == NULL) | |
1769 | { | |
1770 | /* A zombied child. Get the exit value and clear the | |
1771 | zombied entry so it will be reused. */ | |
1772 | sim_core_write_unaligned_4 (current_cpu, pc, 0, saddr, | |
1773 | current_cpu | |
1774 | ->thread_data[i].exitval); | |
1775 | retval | |
1776 | = current_cpu->thread_data[i].threadid + TARGET_PID; | |
1777 | memset (¤t_cpu->thread_data[i], 0, | |
1778 | sizeof (current_cpu->thread_data[i])); | |
1779 | goto outer_break; | |
1780 | } | |
1781 | } | |
1782 | else | |
1783 | { | |
1784 | /* We're waiting for a specific PID. If we don't find | |
1785 | it zombied on this run, rerun the syscall. */ | |
1786 | for (i = 1; i < SIM_TARGET_MAX_THREADS; i++) | |
1787 | if (pid == current_cpu->thread_data[i].threadid + TARGET_PID | |
1788 | && current_cpu->thread_data[i].cpu_context == NULL) | |
1789 | { | |
1790 | if (saddr != 0) | |
1791 | /* Get the exit value if the caller wants it. */ | |
1792 | sim_core_write_unaligned_4 (current_cpu, pc, 0, | |
1793 | saddr, | |
1794 | current_cpu | |
1795 | ->thread_data[i] | |
1796 | .exitval); | |
1797 | ||
1798 | retval | |
1799 | = current_cpu->thread_data[i].threadid + TARGET_PID; | |
1800 | memset (¤t_cpu->thread_data[i], 0, | |
1801 | sizeof (current_cpu->thread_data[i])); | |
1802 | ||
1803 | goto outer_break; | |
1804 | } | |
1805 | ||
1806 | sim_pc_set (current_cpu, pc); | |
1807 | } | |
1808 | ||
1809 | retval = -cb_host_to_target_errno (cb, ECHILD); | |
1810 | outer_break: | |
1811 | break; | |
1812 | } | |
1813 | ||
1814 | case TARGET_SYS_rt_sigaction: | |
1815 | { | |
1816 | USI signum = arg1; | |
1817 | USI old_sa = arg3; | |
1818 | USI new_sa = arg2; | |
1819 | ||
1820 | /* The kernel says: | |
1821 | struct sigaction { | |
1822 | __sighandler_t sa_handler; | |
1823 | unsigned long sa_flags; | |
1824 | void (*sa_restorer)(void); | |
1825 | sigset_t sa_mask; | |
1826 | }; */ | |
1827 | ||
1828 | if (old_sa != 0) | |
1829 | { | |
1830 | sim_core_write_unaligned_4 (current_cpu, pc, 0, old_sa + 0, | |
1831 | current_cpu->sighandler[signum]); | |
1832 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 4, 0); | |
1833 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 8, 0); | |
1834 | ||
1835 | /* We'll assume _NSIG_WORDS is 2 for the kernel. */ | |
1836 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 12, 0); | |
1837 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 16, 0); | |
1838 | } | |
1839 | if (new_sa != 0) | |
1840 | { | |
2ecb8390 | 1841 | USI target_sa_handler |
f6bcefef | 1842 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa); |
2ecb8390 | 1843 | USI target_sa_flags |
f6bcefef | 1844 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 4); |
2ecb8390 | 1845 | USI target_sa_restorer |
f6bcefef | 1846 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 8); |
2ecb8390 | 1847 | USI target_sa_mask_low |
f6bcefef | 1848 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 12); |
2ecb8390 | 1849 | USI target_sa_mask_high |
f6bcefef HPN |
1850 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 16); |
1851 | ||
1852 | /* We won't interrupt a syscall so we won't restart it, | |
1853 | but a signal(2) call ends up syscalling rt_sigaction | |
1854 | with this flag, so we have to handle it. The | |
1855 | sa_restorer field contains garbage when not | |
1856 | TARGET_SA_RESTORER, so don't look at it. For the | |
1857 | time being, we don't nest sighandlers, so we | |
1858 | ignore the sa_mask, which simplifies things. */ | |
2ecb8390 HPN |
1859 | if ((target_sa_flags != 0 |
1860 | && target_sa_flags != TARGET_SA_RESTART | |
1861 | && target_sa_flags != (TARGET_SA_RESTART|TARGET_SA_SIGINFO)) | |
1862 | || target_sa_handler == 0) | |
f6bcefef HPN |
1863 | { |
1864 | sim_io_eprintf (sd, "Unimplemented rt_sigaction " | |
1865 | "syscall (0x%lx, " | |
1866 | "0x%lx: [0x%x, 0x%x, 0x%x, " | |
1867 | "{0x%x, 0x%x}], " | |
1868 | "0x%lx)\n", | |
1869 | (unsigned long) arg1, | |
1870 | (unsigned long) arg2, | |
2ecb8390 HPN |
1871 | target_sa_handler, target_sa_flags, |
1872 | target_sa_restorer, | |
1873 | target_sa_mask_low, target_sa_mask_high, | |
f6bcefef HPN |
1874 | (unsigned long) arg3); |
1875 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
1876 | SIM_SIGILL); | |
1877 | } | |
1878 | ||
2ecb8390 | 1879 | current_cpu->sighandler[signum] = target_sa_handler; |
f6bcefef HPN |
1880 | |
1881 | /* Because we may have unblocked signals, one may now be | |
1882 | pending, if there are threads, that is. */ | |
1883 | if (current_cpu->thread_data) | |
1884 | current_cpu->thread_data[threadno].sigpending = 1; | |
1885 | } | |
1886 | retval = 0; | |
1887 | break; | |
1888 | } | |
1889 | ||
1890 | case TARGET_SYS_mremap: | |
1891 | { | |
1892 | USI addr = arg1; | |
1893 | USI old_len = arg2; | |
1894 | USI new_len = arg3; | |
1895 | USI flags = arg4; | |
1896 | USI new_addr = arg5; | |
1897 | USI mapped_addr; | |
1898 | ||
1899 | if (new_len == old_len) | |
1900 | /* The program and/or library is possibly confused but | |
1901 | this is a valid call. Happens with ipps-1.40 on file | |
1902 | svs_all. */ | |
1903 | retval = addr; | |
1904 | else if (new_len < old_len) | |
1905 | { | |
1906 | /* Shrinking is easy. */ | |
1907 | if (unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
1908 | addr + new_len, old_len - new_len) != 0) | |
1909 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
1910 | else | |
1911 | retval = addr; | |
1912 | } | |
1913 | else if (! is_mapped (sd, ¤t_cpu->highest_mmapped_page, | |
1914 | addr + old_len, new_len - old_len)) | |
1915 | { | |
1916 | /* If the extension isn't mapped, we can just add it. */ | |
1917 | mapped_addr | |
1918 | = create_map (sd, ¤t_cpu->highest_mmapped_page, | |
1919 | addr + old_len, new_len - old_len); | |
1920 | ||
1921 | if (mapped_addr > (USI) -8192) | |
1922 | retval = -cb_host_to_target_errno (cb, -(SI) mapped_addr); | |
1923 | else | |
1924 | retval = addr; | |
1925 | } | |
1926 | else if (flags & TARGET_MREMAP_MAYMOVE) | |
1927 | { | |
1928 | /* Create a whole new map and copy the contents | |
1929 | block-by-block there. We ignore the new_addr argument | |
1930 | for now. */ | |
1931 | char buf[8192]; | |
1932 | USI prev_addr = addr; | |
1933 | USI prev_len = old_len; | |
1934 | ||
1935 | mapped_addr | |
1936 | = create_map (sd, ¤t_cpu->highest_mmapped_page, | |
1937 | 0, new_len); | |
1938 | ||
1939 | if (mapped_addr > (USI) -8192) | |
1940 | { | |
1941 | retval = -cb_host_to_target_errno (cb, -(SI) new_addr); | |
1942 | break; | |
1943 | } | |
1944 | ||
1945 | retval = mapped_addr; | |
1946 | ||
1947 | for (; old_len > 0; | |
1948 | old_len -= 8192, mapped_addr += 8192, addr += 8192) | |
1949 | { | |
1950 | if (sim_core_read_buffer (sd, current_cpu, read_map, buf, | |
1951 | addr, 8192) != 8192 | |
1952 | || sim_core_write_buffer (sd, current_cpu, 0, buf, | |
1953 | mapped_addr, 8192) != 8192) | |
1954 | abort (); | |
1955 | } | |
1956 | ||
1957 | if (unmap_pages (sd, ¤t_cpu->highest_mmapped_page, | |
1958 | prev_addr, prev_len) != 0) | |
1959 | abort (); | |
1960 | } | |
1961 | else | |
1962 | retval = -cb_host_to_target_errno (cb, -ENOMEM); | |
1963 | break; | |
1964 | } | |
1965 | ||
1966 | case TARGET_SYS_poll: | |
1967 | { | |
1968 | int npollfds = arg2; | |
1969 | int timeout = arg3; | |
1970 | SI ufds = arg1; | |
1971 | SI fd = -1; | |
1972 | HI events = -1; | |
1973 | HI revents = 0; | |
1974 | struct stat buf; | |
1975 | int i; | |
1976 | ||
1977 | /* The kernel says: | |
1978 | struct pollfd { | |
1979 | int fd; | |
1980 | short events; | |
1981 | short revents; | |
1982 | }; */ | |
1983 | ||
1984 | /* Check that this is the expected poll call from | |
1985 | linuxthreads/manager.c; we don't support anything else. | |
1986 | Remember, fd == 0 isn't supported. */ | |
1987 | if (npollfds != 1 | |
1988 | || ((fd = sim_core_read_unaligned_4 (current_cpu, pc, | |
1989 | 0, ufds)) <= 0) | |
1990 | || ((events = sim_core_read_unaligned_2 (current_cpu, pc, | |
1991 | 0, ufds + 4)) | |
1992 | != TARGET_POLLIN) | |
1993 | || ((cb->fstat) (cb, fd, &buf) != 0 | |
1994 | || (buf.st_mode & S_IFIFO) == 0) | |
1995 | || current_cpu->thread_data == NULL) | |
1996 | { | |
1997 | sim_io_eprintf (sd, "Unimplemented poll syscall " | |
1998 | "(0x%lx: [0x%x, 0x%x, x], 0x%lx, 0x%lx)\n", | |
1999 | (unsigned long) arg1, fd, events, | |
2000 | (unsigned long) arg2, (unsigned long) arg3); | |
2001 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL); | |
2002 | break; | |
2003 | } | |
2004 | ||
2005 | retval = 0; | |
2006 | ||
2007 | /* Iterate over threads; find a marker that a writer is | |
2008 | sleeping, waiting for a reader. */ | |
2009 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
2010 | if (current_cpu->thread_data[i].cpu_context != NULL | |
2011 | && current_cpu->thread_data[i].pipe_read_fd == fd) | |
2012 | { | |
2013 | revents = TARGET_POLLIN; | |
2014 | retval = 1; | |
2015 | break; | |
2016 | } | |
2017 | ||
2018 | /* Timeout decreases with whatever time passed between the | |
2019 | last syscall and this. That's not exactly right for the | |
2020 | first call, but it's close enough that it isn't | |
2021 | worthwhile to complicate matters by making that a special | |
2022 | case. */ | |
2023 | timeout | |
2024 | -= (TARGET_TIME_MS (current_cpu) | |
2025 | - (current_cpu->thread_data[threadno].last_execution)); | |
2026 | ||
2027 | /* Arrange to repeat this syscall until timeout or event, | |
2028 | decreasing timeout at each iteration. */ | |
2029 | if (timeout > 0 && revents == 0) | |
2030 | { | |
2031 | bfd_byte timeout_buf[4]; | |
2032 | ||
2033 | bfd_putl32 (timeout, timeout_buf); | |
2034 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
2035 | H_GR_R12, timeout_buf, 4); | |
2036 | sim_pc_set (current_cpu, pc); | |
2037 | retval = arg1; | |
2038 | break; | |
2039 | } | |
2040 | ||
2041 | sim_core_write_unaligned_2 (current_cpu, pc, 0, ufds + 4 + 2, | |
2042 | revents); | |
2043 | break; | |
2044 | } | |
2045 | ||
d022998d HPN |
2046 | case TARGET_SYS_time: |
2047 | { | |
2048 | retval = (int) (*cb->time) (cb, 0L); | |
2049 | ||
2050 | /* At time of this writing, CB_SYSCALL_time doesn't do the | |
2051 | part of setting *arg1 to the return value. */ | |
2052 | if (arg1) | |
2053 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1, retval); | |
2054 | break; | |
2055 | } | |
2056 | ||
f6bcefef HPN |
2057 | case TARGET_SYS_gettimeofday: |
2058 | if (arg1 != 0) | |
2059 | { | |
2060 | USI ts = TARGET_TIME (current_cpu); | |
2061 | USI tms = TARGET_TIME_MS (current_cpu); | |
2062 | ||
2063 | /* First dword is seconds since TARGET_EPOCH. */ | |
2064 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1, ts); | |
2065 | ||
2066 | /* Second dword is microseconds. */ | |
2067 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1 + 4, | |
2068 | (tms % 1000) * 1000); | |
2069 | } | |
2070 | if (arg2 != 0) | |
2071 | { | |
2072 | /* Time-zone info is always cleared. */ | |
2073 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2, 0); | |
2074 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2 + 4, 0); | |
2075 | } | |
2076 | retval = 0; | |
2077 | break; | |
2078 | ||
2079 | case TARGET_SYS_llseek: | |
2080 | { | |
2081 | /* If it fits, tweak parameters to fit the "generic" 32-bit | |
2082 | lseek and use that. */ | |
2083 | SI fd = arg1; | |
2084 | SI offs_hi = arg2; | |
2085 | SI offs_lo = arg3; | |
2086 | SI resultp = arg4; | |
2087 | SI whence = arg5; | |
2088 | retval = 0; | |
2089 | ||
2090 | if (!((offs_hi == 0 && offs_lo >= 0) | |
2091 | || (offs_hi == -1 && offs_lo < 0))) | |
2092 | { | |
2093 | sim_io_eprintf (sd, | |
2094 | "Unimplemented llseek offset," | |
2095 | " fd %d: 0x%x:0x%x\n", | |
2096 | fd, (unsigned) arg2, (unsigned) arg3); | |
2097 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2098 | SIM_SIGILL); | |
2099 | } | |
2100 | ||
2101 | s.func = TARGET_SYS_lseek; | |
2102 | s.arg2 = offs_lo; | |
2103 | s.arg3 = whence; | |
2104 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
2105 | { | |
2106 | sim_io_eprintf (sd, "Break 13: invalid %d? Returned %ld\n", callnum, | |
2107 | s.result); | |
2108 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL); | |
2109 | } | |
2110 | if (s.result < 0) | |
2111 | retval = -s.errcode; | |
2112 | else | |
2113 | { | |
2114 | sim_core_write_unaligned_4 (current_cpu, pc, 0, resultp, | |
2115 | s.result); | |
2116 | sim_core_write_unaligned_4 (current_cpu, pc, 0, resultp + 4, | |
2117 | s.result < 0 ? -1 : 0); | |
2118 | } | |
2119 | break; | |
2120 | } | |
2121 | ||
2122 | /* This one does have a generic callback function, but at the time | |
2123 | of this writing, cb_syscall does not have code for it, and we | |
2124 | need target-specific code for the threads implementation | |
2125 | anyway. */ | |
2126 | case TARGET_SYS_kill: | |
2127 | { | |
2128 | USI pid = arg1; | |
2129 | USI sig = arg2; | |
2130 | ||
2131 | retval = 0; | |
2132 | ||
2133 | /* At kill(2), glibc sets signal masks such that the thread | |
2134 | machinery is initialized. Still, there is and was only | |
2135 | one thread. */ | |
2136 | if (current_cpu->max_threadid == 0) | |
2137 | { | |
2138 | if (pid != TARGET_PID) | |
2139 | { | |
2140 | retval = -cb_host_to_target_errno (cb, EPERM); | |
2141 | break; | |
2142 | } | |
2143 | ||
2144 | /* FIXME: Signal infrastructure (target-to-sim mapping). */ | |
2145 | if (sig == TARGET_SIGABRT) | |
2146 | /* A call "abort ()", i.e. "kill (getpid(), SIGABRT)" is | |
2147 | the end-point for failing GCC test-cases. */ | |
2148 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2149 | SIM_SIGABRT); | |
2150 | else | |
2151 | { | |
2152 | sim_io_eprintf (sd, "Unimplemented signal: %d\n", sig); | |
2153 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2154 | SIM_SIGILL); | |
2155 | } | |
2156 | ||
2157 | /* This will not be reached. */ | |
2158 | abort (); | |
2159 | } | |
2160 | else | |
2161 | retval = deliver_signal (current_cpu, sig, pid); | |
2162 | break; | |
2163 | } | |
2164 | ||
2165 | case TARGET_SYS_rt_sigprocmask: | |
2166 | { | |
2167 | int i; | |
2168 | USI how = arg1; | |
2169 | USI newsetp = arg2; | |
2170 | USI oldsetp = arg3; | |
2171 | ||
2172 | if (how != TARGET_SIG_BLOCK | |
2173 | && how != TARGET_SIG_SETMASK | |
2174 | && how != TARGET_SIG_UNBLOCK) | |
2175 | { | |
2176 | sim_io_eprintf (sd, "Unimplemented rt_sigprocmask syscall " | |
2177 | "(0x%x, 0x%x, 0x%x)\n", arg1, arg2, arg3); | |
2178 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2179 | SIM_SIGILL); | |
2180 | retval = 0; | |
2181 | break; | |
2182 | } | |
2183 | ||
2184 | if (newsetp) | |
2185 | { | |
2186 | USI set_low | |
2187 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2188 | newsetp); | |
2189 | USI set_high | |
2190 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2191 | newsetp + 4); | |
2192 | ||
2193 | /* The sigmask is kept in the per-thread data, so we may | |
2194 | need to create the first one. */ | |
2195 | if (current_cpu->thread_data == NULL) | |
2196 | make_first_thread (current_cpu); | |
2197 | ||
2198 | if (how == TARGET_SIG_SETMASK) | |
2199 | for (i = 0; i < 64; i++) | |
2200 | current_cpu->thread_data[threadno].sigdata[i].blocked = 0; | |
2201 | ||
2202 | for (i = 0; i < 32; i++) | |
2203 | if ((set_low & (1 << i))) | |
2204 | current_cpu->thread_data[threadno].sigdata[i + 1].blocked | |
2205 | = (how != TARGET_SIG_UNBLOCK); | |
2206 | ||
2207 | for (i = 0; i < 31; i++) | |
2208 | if ((set_high & (1 << i))) | |
2209 | current_cpu->thread_data[threadno].sigdata[i + 33].blocked | |
2210 | = (how != TARGET_SIG_UNBLOCK); | |
2211 | ||
2212 | /* The mask changed, so a signal may be unblocked for | |
2213 | execution. */ | |
2214 | current_cpu->thread_data[threadno].sigpending = 1; | |
2215 | } | |
2216 | ||
2217 | if (oldsetp != 0) | |
2218 | { | |
2219 | USI set_low = 0; | |
2220 | USI set_high = 0; | |
2221 | ||
2222 | for (i = 0; i < 32; i++) | |
2223 | if (current_cpu->thread_data[threadno] | |
2224 | .sigdata[i + 1].blocked) | |
2225 | set_low |= 1 << i; | |
2226 | for (i = 0; i < 31; i++) | |
2227 | if (current_cpu->thread_data[threadno] | |
2228 | .sigdata[i + 33].blocked) | |
2229 | set_high |= 1 << i; | |
2230 | ||
2231 | sim_core_write_unaligned_4 (current_cpu, pc, 0, oldsetp + 0, set_low); | |
2232 | sim_core_write_unaligned_4 (current_cpu, pc, 0, oldsetp + 4, set_high); | |
2233 | } | |
2234 | ||
2235 | retval = 0; | |
2236 | break; | |
2237 | } | |
2238 | ||
2239 | case TARGET_SYS_sigreturn: | |
2240 | { | |
2241 | int i; | |
2242 | bfd_byte regbuf[4]; | |
2243 | int was_sigsuspended; | |
2244 | ||
2245 | if (current_cpu->thread_data == NULL | |
2246 | /* The CPU context is saved with the simulator data, not | |
2247 | on the stack as in the real world. */ | |
2248 | || (current_cpu->thread_data[threadno].cpu_context_atsignal | |
2249 | == NULL)) | |
2250 | { | |
2251 | sim_io_eprintf (sd, "Invalid sigreturn syscall: no signal" | |
2252 | " handler active " | |
2253 | "(0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx)\n", | |
2254 | (unsigned long) arg1, | |
2255 | (unsigned long) arg2, | |
2256 | (unsigned long) arg3, | |
2257 | (unsigned long) arg4, | |
2258 | (unsigned long) arg5, | |
2259 | (unsigned long) arg6); | |
2260 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2261 | SIM_SIGILL); | |
2262 | } | |
2263 | ||
2264 | was_sigsuspended | |
2265 | = current_cpu->thread_data[threadno].sigsuspended; | |
2266 | ||
2267 | /* Restore the sigmask, either from the stack copy made when | |
2268 | the sighandler was called, or from the saved state | |
2269 | specifically for sigsuspend(2). */ | |
2270 | if (was_sigsuspended) | |
2271 | { | |
2272 | current_cpu->thread_data[threadno].sigsuspended = 0; | |
2273 | for (i = 0; i < 64; i++) | |
2274 | current_cpu->thread_data[threadno].sigdata[i].blocked | |
2275 | = current_cpu->thread_data[threadno] | |
2276 | .sigdata[i].blocked_suspendsave; | |
2277 | } | |
2278 | else | |
2279 | { | |
2280 | USI sp; | |
2281 | USI set_low; | |
2282 | USI set_high; | |
2283 | ||
2284 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, | |
2285 | H_GR_SP, regbuf, 4); | |
2286 | sp = bfd_getl32 (regbuf); | |
2287 | set_low | |
2288 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, sp); | |
2289 | set_high | |
2290 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, sp + 4); | |
2291 | ||
2292 | for (i = 0; i < 32; i++) | |
2293 | current_cpu->thread_data[threadno].sigdata[i + 1].blocked | |
2294 | = (set_low & (1 << i)) != 0; | |
2295 | for (i = 0; i < 31; i++) | |
2296 | current_cpu->thread_data[threadno].sigdata[i + 33].blocked | |
2297 | = (set_high & (1 << i)) != 0; | |
2298 | } | |
2299 | ||
2300 | /* The mask changed, so a signal may be unblocked for | |
2301 | execution. */ | |
2302 | current_cpu->thread_data[threadno].sigpending = 1; | |
2303 | ||
2304 | memcpy (¤t_cpu->cpu_data_placeholder, | |
2305 | current_cpu->thread_data[threadno].cpu_context_atsignal, | |
2306 | current_cpu->thread_cpu_data_size); | |
2307 | free (current_cpu->thread_data[threadno].cpu_context_atsignal); | |
2308 | current_cpu->thread_data[threadno].cpu_context_atsignal = NULL; | |
2309 | ||
2310 | /* The return value must come from the saved R10. */ | |
2311 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_R10, regbuf, 4); | |
2312 | retval = bfd_getl32 (regbuf); | |
2313 | ||
2314 | /* We must also break the "sigsuspension loop". */ | |
2315 | if (was_sigsuspended) | |
2316 | sim_pc_set (current_cpu, sim_pc_get (current_cpu) + 2); | |
2317 | break; | |
2318 | } | |
2319 | ||
2320 | case TARGET_SYS_rt_sigsuspend: | |
2321 | { | |
2322 | USI newsetp = arg1; | |
2323 | USI setsize = arg2; | |
2324 | ||
2325 | if (setsize != 8) | |
2326 | { | |
2327 | sim_io_eprintf (sd, "Unimplemented rt_sigsuspend syscall" | |
2328 | " arguments (0x%lx, 0x%lx)\n", | |
2329 | (unsigned long) arg1, (unsigned long) arg2); | |
2330 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2331 | SIM_SIGILL); | |
2332 | } | |
2333 | ||
2334 | /* Don't change the signal mask if we're already in | |
2335 | sigsuspend state (i.e. this syscall is a rerun). */ | |
2336 | else if (!current_cpu->thread_data[threadno].sigsuspended) | |
2337 | { | |
2338 | USI set_low | |
2339 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2340 | newsetp); | |
2341 | USI set_high | |
2342 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2343 | newsetp + 4); | |
2344 | int i; | |
2345 | ||
2346 | /* Save the current sigmask and insert the user-supplied | |
2347 | one. */ | |
2348 | for (i = 0; i < 32; i++) | |
2349 | { | |
2350 | current_cpu->thread_data[threadno] | |
2351 | .sigdata[i + 1].blocked_suspendsave | |
2352 | = current_cpu->thread_data[threadno] | |
2353 | .sigdata[i + 1].blocked; | |
2354 | ||
2355 | current_cpu->thread_data[threadno] | |
2356 | .sigdata[i + 1].blocked = (set_low & (1 << i)) != 0; | |
2357 | } | |
2358 | for (i = 0; i < 31; i++) | |
2359 | { | |
2360 | current_cpu->thread_data[threadno] | |
2361 | .sigdata[i + 33].blocked_suspendsave | |
2362 | = current_cpu->thread_data[threadno] | |
2363 | .sigdata[i + 33].blocked; | |
2364 | current_cpu->thread_data[threadno] | |
2365 | .sigdata[i + 33].blocked = (set_high & (1 << i)) != 0; | |
2366 | } | |
2367 | ||
2368 | current_cpu->thread_data[threadno].sigsuspended = 1; | |
2369 | ||
2370 | /* The mask changed, so a signal may be unblocked for | |
2371 | execution. */ | |
2372 | current_cpu->thread_data[threadno].sigpending = 1; | |
2373 | } | |
2374 | ||
2375 | /* Because we don't use arg1 (newsetp) when this syscall is | |
2376 | rerun, it doesn't matter that we overwrite it with the | |
2377 | (constant) return value. */ | |
2378 | retval = -cb_host_to_target_errno (cb, EINTR); | |
2379 | sim_pc_set (current_cpu, pc); | |
2380 | break; | |
2381 | } | |
2382 | ||
2383 | /* Add case labels here for other syscalls using the 32-bit | |
2384 | "struct stat", provided they have a corresponding simulator | |
2385 | function of course. */ | |
5457266c | 2386 | case TARGET_SYS_stat: |
f6bcefef HPN |
2387 | case TARGET_SYS_fstat: |
2388 | { | |
2389 | /* As long as the infrastructure doesn't cache anything | |
2390 | related to the stat mapping, this trick gets us a dual | |
2391 | "struct stat"-type mapping in the least error-prone way. */ | |
2392 | const char *saved_map = cb->stat_map; | |
2393 | CB_TARGET_DEFS_MAP *saved_syscall_map = cb->syscall_map; | |
2394 | ||
2395 | cb->syscall_map = (CB_TARGET_DEFS_MAP *) syscall_stat32_map; | |
2396 | cb->stat_map = stat32_map; | |
2397 | ||
2398 | if (cb_syscall (cb, &s) != CB_RC_OK) | |
2399 | { | |
2400 | abort (); | |
2401 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2402 | SIM_SIGILL); | |
2403 | } | |
2404 | retval = s.result == -1 ? -s.errcode : s.result; | |
2405 | ||
2406 | cb->stat_map = saved_map; | |
2407 | cb->syscall_map = saved_syscall_map; | |
2408 | break; | |
2409 | } | |
2410 | ||
2411 | case TARGET_SYS_getcwd: | |
2412 | { | |
2413 | USI buf = arg1; | |
2414 | USI size = arg2; | |
2415 | ||
2416 | char *cwd = xmalloc (MAXPATHLEN); | |
2417 | if (cwd != getcwd (cwd, MAXPATHLEN)) | |
2418 | abort (); | |
2419 | ||
2420 | /* FIXME: When and if we support chdir, we need something | |
2421 | a bit more elaborate. */ | |
2422 | if (simulator_sysroot[0] != '\0') | |
2423 | strcpy (cwd, "/"); | |
2424 | ||
2425 | retval = -cb_host_to_target_errno (cb, ERANGE); | |
2426 | if (strlen (cwd) + 1 <= size) | |
2427 | { | |
2428 | retval = strlen (cwd) + 1; | |
2429 | if (sim_core_write_buffer (sd, current_cpu, 0, cwd, | |
2430 | buf, retval) | |
2431 | != (unsigned int) retval) | |
2432 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
2433 | } | |
2434 | free (cwd); | |
2435 | break; | |
2436 | } | |
2437 | ||
2438 | case TARGET_SYS_readlink: | |
2439 | { | |
2440 | SI path = arg1; | |
2441 | SI buf = arg2; | |
2442 | SI bufsiz = arg3; | |
2443 | char *pbuf = xmalloc (MAXPATHLEN); | |
2444 | char *lbuf = xmalloc (MAXPATHLEN); | |
2445 | char *lbuf_alloc = lbuf; | |
2446 | int nchars = -1; | |
2447 | int i; | |
2448 | int o = 0; | |
2449 | ||
2450 | if (sim_core_read_unaligned_1 (current_cpu, pc, 0, path) == '/') | |
2451 | { | |
2452 | strcpy (pbuf, simulator_sysroot); | |
2453 | o += strlen (simulator_sysroot); | |
2454 | } | |
2455 | ||
2456 | for (i = 0; i + o < MAXPATHLEN; i++) | |
2457 | { | |
2458 | pbuf[i + o] | |
2459 | = sim_core_read_unaligned_1 (current_cpu, pc, 0, path + i); | |
2460 | if (pbuf[i + o] == 0) | |
2461 | break; | |
2462 | } | |
2463 | ||
2464 | if (i + o == MAXPATHLEN) | |
2465 | { | |
2466 | retval = -cb_host_to_target_errno (cb, ENAMETOOLONG); | |
2467 | break; | |
2468 | } | |
2469 | ||
2470 | /* Intervene calls for certain files expected in the target | |
2471 | proc file system. */ | |
2472 | if (strcmp (pbuf + strlen (simulator_sysroot), | |
2473 | "/proc/" XSTRING (TARGET_PID) "/exe") == 0) | |
2474 | { | |
2475 | char *argv0 | |
2476 | = (STATE_PROG_ARGV (sd) != NULL | |
2477 | ? *STATE_PROG_ARGV (sd) : NULL); | |
2478 | ||
2479 | if (argv0 == NULL || *argv0 == '.') | |
2480 | { | |
2481 | sim_io_eprintf (sd, "Unimplemented readlink syscall " | |
2482 | "(0x%lx: [\"%s\"], 0x%lx)\n", | |
2483 | (unsigned long) arg1, pbuf, | |
2484 | (unsigned long) arg2); | |
2485 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2486 | SIM_SIGILL); | |
2487 | break; | |
2488 | } | |
2489 | else if (*argv0 == '/') | |
2490 | { | |
2491 | if (strncmp (simulator_sysroot, argv0, | |
2492 | strlen (simulator_sysroot)) == 0) | |
2493 | argv0 += strlen (simulator_sysroot); | |
2494 | ||
2495 | strcpy (lbuf, argv0); | |
2496 | nchars = strlen (argv0) + 1; | |
2497 | } | |
2498 | else | |
2499 | { | |
2500 | if (getcwd (lbuf, MAXPATHLEN) != NULL | |
2501 | && strlen (lbuf) + 2 + strlen (argv0) < MAXPATHLEN) | |
2502 | { | |
2503 | if (strncmp (simulator_sysroot, lbuf, | |
2504 | strlen (simulator_sysroot)) == 0) | |
2505 | lbuf += strlen (simulator_sysroot); | |
2506 | ||
2507 | strcat (lbuf, "/"); | |
2508 | strcat (lbuf, argv0); | |
2509 | nchars = strlen (lbuf) + 1; | |
2510 | } | |
2511 | else | |
2512 | abort (); | |
2513 | } | |
2514 | } | |
2515 | else | |
2516 | nchars = readlink (pbuf, lbuf, MAXPATHLEN); | |
2517 | ||
2518 | /* We trust that the readlink result returns a *relative* | |
2519 | link, or one already adjusted for the file-path-prefix. | |
2520 | (We can't generally tell the difference, so we go with | |
2521 | the easiest decision; no adjustment.) */ | |
2522 | ||
2523 | if (nchars == -1) | |
2524 | { | |
2525 | retval = -cb_host_to_target_errno (cb, errno); | |
2526 | break; | |
2527 | } | |
2528 | ||
2529 | if (bufsiz < nchars) | |
2530 | nchars = bufsiz; | |
2531 | ||
2532 | if (sim_core_write_buffer (sd, current_cpu, write_map, lbuf, | |
2533 | buf, nchars) != (unsigned int) nchars) | |
2534 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
2535 | else | |
2536 | retval = nchars; | |
2537 | ||
2538 | free (pbuf); | |
2539 | free (lbuf_alloc); | |
2540 | break; | |
2541 | } | |
2542 | ||
2543 | case TARGET_SYS_sched_getscheduler: | |
2544 | { | |
2545 | USI pid = arg1; | |
2546 | ||
2547 | /* FIXME: Search (other) existing threads. */ | |
2548 | if (pid != 0 && pid != TARGET_PID) | |
2549 | retval = -cb_host_to_target_errno (cb, ESRCH); | |
2550 | else | |
2551 | retval = TARGET_SCHED_OTHER; | |
2552 | break; | |
2553 | } | |
2554 | ||
2555 | case TARGET_SYS_sched_getparam: | |
2556 | { | |
2557 | USI pid = arg1; | |
2558 | USI paramp = arg2; | |
2559 | ||
2560 | /* The kernel says: | |
2561 | struct sched_param { | |
2562 | int sched_priority; | |
2563 | }; */ | |
2564 | ||
2565 | if (pid != 0 && pid != TARGET_PID) | |
2566 | retval = -cb_host_to_target_errno (cb, ESRCH); | |
2567 | else | |
2568 | { | |
2569 | /* FIXME: Save scheduler setting before threads are | |
2570 | created too. */ | |
2571 | sim_core_write_unaligned_4 (current_cpu, pc, 0, paramp, | |
2572 | current_cpu->thread_data != NULL | |
2573 | ? (current_cpu | |
2574 | ->thread_data[threadno] | |
2575 | .priority) | |
2576 | : 0); | |
2577 | retval = 0; | |
2578 | } | |
2579 | break; | |
2580 | } | |
2581 | ||
2582 | case TARGET_SYS_sched_setparam: | |
2583 | { | |
2584 | USI pid = arg1; | |
2585 | USI paramp = arg2; | |
2586 | ||
2587 | if ((pid != 0 && pid != TARGET_PID) | |
2588 | || sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2589 | paramp) != 0) | |
2590 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2591 | else | |
2592 | retval = 0; | |
2593 | break; | |
2594 | } | |
2595 | ||
2596 | case TARGET_SYS_sched_setscheduler: | |
2597 | { | |
2598 | USI pid = arg1; | |
2599 | USI policy = arg2; | |
2600 | USI paramp = arg3; | |
2601 | ||
2602 | if ((pid != 0 && pid != TARGET_PID) | |
2603 | || policy != TARGET_SCHED_OTHER | |
2604 | || sim_core_read_unaligned_4 (current_cpu, pc, 0, | |
2605 | paramp) != 0) | |
2606 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2607 | else | |
2608 | /* FIXME: Save scheduler setting to be read in later | |
2609 | sched_getparam calls. */ | |
2610 | retval = 0; | |
2611 | break; | |
2612 | } | |
2613 | ||
2614 | case TARGET_SYS_sched_yield: | |
2615 | /* We reschedule to the next thread after a syscall anyway, so | |
2616 | we don't have to do anything here than to set the return | |
2617 | value. */ | |
2618 | retval = 0; | |
2619 | break; | |
2620 | ||
2621 | case TARGET_SYS_sched_get_priority_min: | |
2622 | case TARGET_SYS_sched_get_priority_max: | |
2623 | if (arg1 != 0) | |
2624 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2625 | else | |
2626 | retval = 0; | |
2627 | break; | |
2628 | ||
2629 | case TARGET_SYS_ugetrlimit: | |
2630 | { | |
2631 | unsigned int curlim, maxlim; | |
2632 | if (arg1 != TARGET_RLIMIT_STACK && arg1 != TARGET_RLIMIT_NOFILE) | |
2633 | { | |
2634 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2635 | break; | |
2636 | } | |
2637 | ||
2638 | /* The kernel says: | |
2639 | struct rlimit { | |
2640 | unsigned long rlim_cur; | |
2641 | unsigned long rlim_max; | |
2642 | }; */ | |
2643 | if (arg1 == TARGET_RLIMIT_NOFILE) | |
2644 | { | |
2645 | /* Sadly a very low limit. Better not lie, though. */ | |
2646 | maxlim = curlim = MAX_CALLBACK_FDS; | |
2647 | } | |
2648 | else /* arg1 == TARGET_RLIMIT_STACK */ | |
2649 | { | |
2650 | maxlim = 0xffffffff; | |
2651 | curlim = 0x800000; | |
2652 | } | |
2653 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2, curlim); | |
2654 | sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2 + 4, maxlim); | |
2655 | retval = 0; | |
2656 | break; | |
2657 | } | |
2658 | ||
2659 | case TARGET_SYS_setrlimit: | |
2660 | if (arg1 != TARGET_RLIMIT_STACK) | |
2661 | { | |
2662 | retval = -cb_host_to_target_errno (cb, EINVAL); | |
2663 | break; | |
2664 | } | |
2665 | /* FIXME: Save values for future ugetrlimit calls. */ | |
2666 | retval = 0; | |
2667 | break; | |
2668 | ||
2669 | /* Provide a very limited subset of the sysctl functions, and | |
2670 | abort for the rest. */ | |
2671 | case TARGET_SYS__sysctl: | |
2672 | { | |
2673 | /* The kernel says: | |
2674 | struct __sysctl_args { | |
2675 | int *name; | |
2676 | int nlen; | |
2677 | void *oldval; | |
2678 | size_t *oldlenp; | |
2679 | void *newval; | |
2680 | size_t newlen; | |
2681 | unsigned long __unused[4]; | |
2682 | }; */ | |
2683 | SI name = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1); | |
2684 | SI name0 = name == 0 | |
2685 | ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, name); | |
2686 | SI name1 = name == 0 | |
2687 | ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, name + 4); | |
2688 | SI nlen | |
2689 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 4); | |
2690 | SI oldval | |
2691 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 8); | |
2692 | SI oldlenp | |
2693 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 12); | |
2694 | SI oldlen = oldlenp == 0 | |
2695 | ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, oldlenp); | |
2696 | SI newval | |
2697 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 16); | |
2698 | SI newlen | |
2699 | = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 20); | |
2700 | ||
2701 | if (name0 == TARGET_CTL_KERN && name1 == TARGET_CTL_KERN_VERSION) | |
2702 | { | |
2703 | SI to_write = oldlen < (SI) sizeof (TARGET_UTSNAME) | |
2704 | ? oldlen : (SI) sizeof (TARGET_UTSNAME); | |
2705 | ||
2706 | sim_core_write_unaligned_4 (current_cpu, pc, 0, oldlenp, | |
2707 | sizeof (TARGET_UTSNAME)); | |
2708 | ||
2709 | if (sim_core_write_buffer (sd, current_cpu, write_map, | |
2710 | TARGET_UTSNAME, oldval, | |
2711 | to_write) | |
2712 | != (unsigned int) to_write) | |
2713 | retval = -cb_host_to_target_errno (cb, EFAULT); | |
2714 | else | |
2715 | retval = 0; | |
2716 | break; | |
2717 | } | |
2718 | ||
2719 | sim_io_eprintf (sd, "Unimplemented _sysctl syscall " | |
2720 | "(0x%lx: [0x%lx, 0x%lx]," | |
2721 | " 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx)\n", | |
2722 | (unsigned long) name, | |
2723 | (unsigned long) name0, | |
2724 | (unsigned long) name1, | |
2725 | (unsigned long) nlen, | |
2726 | (unsigned long) oldval, | |
2727 | (unsigned long) oldlenp, | |
2728 | (unsigned long) newval, | |
2729 | (unsigned long) newlen); | |
2730 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2731 | SIM_SIGILL); | |
2732 | break; | |
2733 | } | |
2734 | ||
2735 | case TARGET_SYS_exit: | |
2736 | { | |
2737 | /* Here for all but the last thread. */ | |
2738 | int i; | |
2739 | int pid | |
2740 | = current_cpu->thread_data[threadno].threadid + TARGET_PID; | |
2741 | int ppid | |
2742 | = (current_cpu->thread_data[threadno].parent_threadid | |
2743 | + TARGET_PID); | |
2744 | int exitsig = current_cpu->thread_data[threadno].exitsig; | |
2745 | ||
2746 | /* Any children are now all orphans. */ | |
2747 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
2748 | if (current_cpu->thread_data[i].parent_threadid | |
2749 | == current_cpu->thread_data[threadno].threadid) | |
2750 | /* Make getppid(2) return 1 for them, poor little ones. */ | |
2751 | current_cpu->thread_data[i].parent_threadid = -TARGET_PID + 1; | |
2752 | ||
2753 | /* Free the cpu context data. When the parent has received | |
2754 | the exit status, we'll clear the entry too. */ | |
2755 | free (current_cpu->thread_data[threadno].cpu_context); | |
2756 | current_cpu->thread_data[threadno].cpu_context = NULL; | |
2757 | current_cpu->m1threads--; | |
2758 | if (arg1 != 0) | |
2759 | { | |
2760 | sim_io_eprintf (sd, "Thread %d exited with status %d\n", | |
2761 | pid, arg1); | |
2762 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2763 | SIM_SIGILL); | |
2764 | } | |
2765 | ||
2766 | /* Still, we may want to support non-zero exit values. */ | |
2767 | current_cpu->thread_data[threadno].exitval = arg1 << 8; | |
2768 | ||
2769 | if (exitsig) | |
2770 | deliver_signal (current_cpu, exitsig, ppid); | |
2771 | break; | |
2772 | } | |
2773 | ||
2774 | case TARGET_SYS_clone: | |
2775 | { | |
2776 | int nthreads = current_cpu->m1threads + 1; | |
2777 | void *thread_cpu_data; | |
2778 | bfd_byte old_sp_buf[4]; | |
2779 | bfd_byte sp_buf[4]; | |
2780 | const bfd_byte zeros[4] = { 0, 0, 0, 0 }; | |
2781 | int i; | |
2782 | ||
2783 | /* That's right, the syscall clone arguments are reversed | |
2784 | compared to sys_clone notes in clone(2) and compared to | |
2785 | other Linux ports (i.e. it's the same order as in the | |
2786 | clone(2) libcall). */ | |
2787 | USI flags = arg2; | |
2788 | USI newsp = arg1; | |
2789 | ||
2790 | if (nthreads == SIM_TARGET_MAX_THREADS) | |
2791 | { | |
2792 | retval = -cb_host_to_target_errno (cb, EAGAIN); | |
2793 | break; | |
2794 | } | |
2795 | ||
2796 | /* FIXME: Implement the low byte. */ | |
2797 | if ((flags & ~TARGET_CSIGNAL) != | |
2798 | (TARGET_CLONE_VM | |
2799 | | TARGET_CLONE_FS | |
2800 | | TARGET_CLONE_FILES | |
2801 | | TARGET_CLONE_SIGHAND) | |
2802 | || newsp == 0) | |
2803 | { | |
2804 | sim_io_eprintf (sd, | |
2805 | "Unimplemented clone syscall (0x%lx, 0x%lx)\n", | |
2806 | (unsigned long) arg1, (unsigned long) arg2); | |
2807 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2808 | SIM_SIGILL); | |
2809 | } | |
2810 | ||
2811 | if (current_cpu->thread_data == NULL) | |
2812 | make_first_thread (current_cpu); | |
2813 | ||
2814 | /* The created thread will get the new SP and a cleared R10. | |
2815 | Since it's created out of a copy of the old thread and we | |
2816 | don't have a set-register-function that just take the | |
2817 | cpu_data as a parameter, we set the childs values first, | |
2818 | and write back or overwrite them in the parent after the | |
2819 | copy. */ | |
2820 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, | |
2821 | H_GR_SP, old_sp_buf, 4); | |
2822 | bfd_putl32 (newsp, sp_buf); | |
2823 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
2824 | H_GR_SP, sp_buf, 4); | |
2825 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
2826 | H_GR_R10, (bfd_byte *) zeros, 4); | |
2827 | thread_cpu_data | |
2828 | = (*current_cpu | |
2829 | ->make_thread_cpu_data) (current_cpu, | |
2830 | ¤t_cpu->cpu_data_placeholder); | |
2831 | (*CPU_REG_STORE (current_cpu)) (current_cpu, | |
2832 | H_GR_SP, old_sp_buf, 4); | |
2833 | ||
2834 | retval = ++current_cpu->max_threadid + TARGET_PID; | |
2835 | ||
2836 | /* Find an unused slot. After a few threads have been created | |
2837 | and exited, the array is expected to be a bit fragmented. | |
2838 | We don't reuse the first entry, though, that of the | |
2839 | original thread. */ | |
2840 | for (i = 1; i < SIM_TARGET_MAX_THREADS; i++) | |
2841 | if (current_cpu->thread_data[i].cpu_context == NULL | |
2842 | /* Don't reuse a zombied entry. */ | |
2843 | && current_cpu->thread_data[i].threadid == 0) | |
2844 | break; | |
2845 | ||
2846 | memcpy (¤t_cpu->thread_data[i], | |
2847 | ¤t_cpu->thread_data[threadno], | |
2848 | sizeof (current_cpu->thread_data[i])); | |
2849 | current_cpu->thread_data[i].cpu_context = thread_cpu_data; | |
2850 | current_cpu->thread_data[i].cpu_context_atsignal = NULL; | |
2851 | current_cpu->thread_data[i].threadid = current_cpu->max_threadid; | |
2852 | current_cpu->thread_data[i].parent_threadid | |
2853 | = current_cpu->thread_data[threadno].threadid; | |
2854 | current_cpu->thread_data[i].pipe_read_fd = 0; | |
2855 | current_cpu->thread_data[i].pipe_write_fd = 0; | |
2856 | current_cpu->thread_data[i].at_syscall = 0; | |
2857 | current_cpu->thread_data[i].sigpending = 0; | |
2858 | current_cpu->thread_data[i].sigsuspended = 0; | |
2859 | current_cpu->thread_data[i].exitsig = flags & TARGET_CSIGNAL; | |
2860 | current_cpu->m1threads = nthreads; | |
2861 | break; | |
2862 | } | |
2863 | ||
2864 | /* Better watch these in case they do something necessary. */ | |
2865 | case TARGET_SYS_socketcall: | |
2866 | retval = -cb_host_to_target_errno (cb, ENOSYS); | |
2867 | break; | |
2868 | ||
2869 | unimplemented_syscall: | |
2870 | default: | |
2871 | sim_io_eprintf (sd, "Unimplemented syscall: %d " | |
2872 | "(0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n", callnum, | |
2873 | arg1, arg2, arg3, arg4, arg5, arg6); | |
2874 | sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, | |
2875 | SIM_SIGILL); | |
2876 | } | |
2877 | } | |
2878 | ||
ed1f044a HPN |
2879 | /* Minimal support for fcntl F_GETFL as used in open+fdopen. */ |
2880 | if (callnum == TARGET_SYS_open) | |
2881 | { | |
2882 | current_cpu->last_open_fd = retval; | |
2883 | current_cpu->last_open_flags = arg2; | |
2884 | } | |
2885 | current_cpu->last_syscall = callnum; | |
2886 | ||
f6bcefef HPN |
2887 | /* A system call is a rescheduling point. For the time being, we don't |
2888 | reschedule anywhere else. */ | |
2889 | if (current_cpu->m1threads != 0 | |
2890 | /* We need to schedule off from an exiting thread that is the | |
2891 | second-last one. */ | |
2892 | || (current_cpu->thread_data != NULL | |
2893 | && current_cpu->thread_data[threadno].cpu_context == NULL)) | |
2894 | { | |
2895 | bfd_byte retval_buf[4]; | |
2896 | ||
2897 | current_cpu->thread_data[threadno].last_execution | |
2898 | = TARGET_TIME_MS (current_cpu); | |
2899 | bfd_putl32 (retval, retval_buf); | |
2900 | (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R10, retval_buf, 4); | |
2901 | ||
2902 | current_cpu->thread_data[threadno].at_syscall = 1; | |
2903 | reschedule (current_cpu); | |
2904 | ||
2905 | (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_R10, retval_buf, 4); | |
2906 | retval = bfd_getl32 (retval_buf); | |
2907 | } | |
2908 | ||
2909 | return retval; | |
2910 | } | |
2911 | ||
2912 | /* Callback from simulator write saying that the pipe at (reader, writer) | |
2913 | is now non-empty (so the writer should wait until the pipe is empty, at | |
2914 | least not write to this or any other pipe). Simplest is to just wait | |
2915 | until the pipe is empty. */ | |
2916 | ||
2917 | static void | |
2918 | cris_pipe_nonempty (host_callback *cb ATTRIBUTE_UNUSED, | |
2919 | int reader, int writer) | |
2920 | { | |
2921 | SIM_CPU *cpu = current_cpu_for_cb_callback; | |
2922 | const bfd_byte zeros[4] = { 0, 0, 0, 0 }; | |
2923 | ||
2924 | /* It's the current thread: we just have to re-run the current | |
2925 | syscall instruction (presumably "break 13") and change the syscall | |
2926 | to the special simulator-wait code. Oh, and set a marker that | |
2927 | we're waiting, so we can disambiguate the special call from a | |
2928 | program error. | |
2929 | ||
2930 | This function may be called multiple times between cris_pipe_empty, | |
2931 | but we must avoid e.g. decreasing PC every time. Check fd markers | |
2932 | to tell. */ | |
2933 | if (cpu->thread_data == NULL) | |
2934 | { | |
2935 | sim_io_eprintf (CPU_STATE (cpu), | |
2936 | "Terminating simulation due to writing pipe rd:wr %d:%d" | |
2937 | " from one single thread\n", reader, writer); | |
2938 | sim_engine_halt (CPU_STATE (cpu), cpu, | |
2939 | NULL, sim_pc_get (cpu), sim_stopped, SIM_SIGILL); | |
2940 | } | |
2941 | else if (cpu->thread_data[cpu->threadno].pipe_write_fd == 0) | |
2942 | { | |
2943 | cpu->thread_data[cpu->threadno].pipe_write_fd = writer; | |
2944 | cpu->thread_data[cpu->threadno].pipe_read_fd = reader; | |
2945 | /* FIXME: We really shouldn't change registers other than R10 in | |
2946 | syscalls (like R9), here or elsewhere. */ | |
2947 | (*CPU_REG_STORE (cpu)) (cpu, H_GR_R9, (bfd_byte *) zeros, 4); | |
2948 | sim_pc_set (cpu, sim_pc_get (cpu) - 2); | |
2949 | } | |
2950 | } | |
2951 | ||
2952 | /* Callback from simulator close or read call saying that the pipe at | |
2953 | (reader, writer) is now empty (so the writer can write again, perhaps | |
2954 | leave a waiting state). If there are bytes remaining, they couldn't be | |
2955 | consumed (perhaps due to the pipe closing). */ | |
2956 | ||
2957 | static void | |
2958 | cris_pipe_empty (host_callback *cb, | |
2959 | int reader ATTRIBUTE_UNUSED, | |
2960 | int writer) | |
2961 | { | |
2962 | int i; | |
2963 | SIM_CPU *cpu = current_cpu_for_cb_callback; | |
2964 | bfd_byte r10_buf[4]; | |
2965 | int remaining = cb->pipe_buffer[writer].size; | |
2966 | ||
2967 | /* We need to find the thread that waits for this pipe. */ | |
2968 | for (i = 0; i < SIM_TARGET_MAX_THREADS; i++) | |
2969 | if (cpu->thread_data[i].cpu_context | |
2970 | && cpu->thread_data[i].pipe_write_fd == writer) | |
2971 | { | |
2972 | int retval; | |
2973 | /* Temporarily switch to this cpu context, so we can change the | |
2974 | PC by ordinary calls. */ | |
2975 | ||
2976 | memcpy (cpu->thread_data[cpu->threadno].cpu_context, | |
2977 | &cpu->cpu_data_placeholder, | |
2978 | cpu->thread_cpu_data_size); | |
2979 | memcpy (&cpu->cpu_data_placeholder, | |
2980 | cpu->thread_data[i].cpu_context, | |
2981 | cpu->thread_cpu_data_size); | |
2982 | ||
2983 | /* The return value is supposed to contain the number of written | |
2984 | bytes, which is the number of bytes requested and returned at | |
2985 | the write call. We subtract the remaining bytes from that, | |
2986 | but making sure we still get a positive number. | |
2987 | The return value may also be a negative number; an error | |
2988 | value. We cover this case by comparing against remaining, | |
2989 | which is always >= 0. */ | |
2990 | (*CPU_REG_FETCH (cpu)) (cpu, H_GR_R10, r10_buf, 4); | |
2991 | retval = (int) bfd_getl_signed_32 (r10_buf); | |
2992 | if (retval >= remaining) | |
2993 | bfd_putl32 (retval - remaining, r10_buf); | |
2994 | (*CPU_REG_STORE (cpu)) (cpu, H_GR_R10, r10_buf, 4); | |
2995 | ||
2996 | sim_pc_set (cpu, sim_pc_get (cpu) + 2); | |
2997 | memcpy (cpu->thread_data[i].cpu_context, | |
2998 | &cpu->cpu_data_placeholder, | |
2999 | cpu->thread_cpu_data_size); | |
3000 | memcpy (&cpu->cpu_data_placeholder, | |
3001 | cpu->thread_data[cpu->threadno].cpu_context, | |
3002 | cpu->thread_cpu_data_size); | |
3003 | cpu->thread_data[i].pipe_read_fd = 0; | |
3004 | cpu->thread_data[i].pipe_write_fd = 0; | |
3005 | return; | |
3006 | } | |
3007 | ||
3008 | abort (); | |
3009 | } | |
3010 | ||
3011 | /* We have a simulator-specific notion of time. See TARGET_TIME. */ | |
3012 | ||
3013 | static long | |
3014 | cris_time (host_callback *cb ATTRIBUTE_UNUSED, long *t) | |
3015 | { | |
3016 | long retval = TARGET_TIME (current_cpu_for_cb_callback); | |
3017 | if (t) | |
3018 | *t = retval; | |
3019 | return retval; | |
3020 | } | |
3021 | ||
3022 | /* Set target-specific callback data. */ | |
3023 | ||
3024 | void | |
3025 | cris_set_callbacks (host_callback *cb) | |
3026 | { | |
3027 | /* Yeargh, have to cast away constness to avoid warnings. */ | |
3028 | cb->syscall_map = (CB_TARGET_DEFS_MAP *) syscall_map; | |
3029 | cb->errno_map = (CB_TARGET_DEFS_MAP *) errno_map; | |
3030 | ||
3031 | /* The kernel stat64 layout. If we see a file > 2G, the "long" | |
3032 | parameter to cb_store_target_endian will make st_size negative. | |
3033 | Similarly for st_ino. FIXME: Find a 64-bit type, and use it | |
3034 | *unsigned*, and/or add syntax for signed-ness. */ | |
3035 | cb->stat_map = stat_map; | |
3036 | cb->open_map = (CB_TARGET_DEFS_MAP *) open_map; | |
3037 | cb->pipe_nonempty = cris_pipe_nonempty; | |
3038 | cb->pipe_empty = cris_pipe_empty; | |
3039 | cb->time = cris_time; | |
3040 | } | |
3041 | ||
3042 | /* Process an address exception. */ | |
3043 | ||
3044 | void | |
3045 | cris_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia, | |
3046 | unsigned int map, int nr_bytes, address_word addr, | |
3047 | transfer_type transfer, sim_core_signals sig) | |
3048 | { | |
3049 | sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr, | |
3050 | transfer, sig); | |
3051 | } |