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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [cris/] [traps.c] - Blame information for rev 822

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Line No. Rev Author Line
1 227 jeremybenn 
/* CRIS exception, interrupt, and trap (EIT) support
2 
   Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010
3 
   Free Software Foundation, Inc.
4 
   Contributed by Axis Communications.
5 
 
6 
This file is part of the GNU simulators.
7 
 
8 
This program is free software; you can redistribute it and/or modify
9 
it under the terms of the GNU General Public License as published by
10 
the Free Software Foundation; either version 3 of the License, or
11 
(at your option) any later version.
12 
 
13 
This program is distributed in the hope that it will be useful,
14 
but WITHOUT ANY WARRANTY; without even the implied warranty of
15 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 
GNU General Public License for more details.
17 
 
18 
You should have received a copy of the GNU General Public License
19 
along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20 
 
21 
#include "sim-main.h"
22 
#include "sim-options.h"
23 
#include "bfd.h"
24 
/* FIXME: get rid of targ-vals.h usage everywhere else.  */
25 
 
26 
#include <stdarg.h>
27 
#ifdef HAVE_ERRNO_H
28 
#include <errno.h>
29 
#endif
30 
#ifdef HAVE_UNISTD_H
31 
#include <unistd.h>
32 
#endif
33 
#ifdef HAVE_FCNTL_H
34 
#include <fcntl.h>
35 
#endif
36 
#ifdef HAVE_SYS_PARAM_H
37 
#include <sys/param.h>
38 
#endif
39 
#ifdef HAVE_SYS_STAT_H
40 
#include <sys/stat.h>
41 
#endif
42 
/* For PATH_MAX, originally. */
43 
#ifdef HAVE_LIMITS_H
44 
#include <limits.h>
45 
#endif
46 
 
47 
/* From ld/sysdep.h.  */
48 
#ifdef PATH_MAX
49 
# define SIM_PATHMAX PATH_MAX
50 
#else
51 
# ifdef MAXPATHLEN
52 
#  define SIM_PATHMAX MAXPATHLEN
53 
# else
54 
#  define SIM_PATHMAX 1024
55 
# endif
56 
#endif
57 
 
58 
/* The verbatim values are from asm-cris/unistd.h.  */
59 
 
60 
#define TARGET_SYS_exit 1
61 
#define TARGET_SYS_read 3
62 
#define TARGET_SYS_write 4
63 
#define TARGET_SYS_open 5
64 
#define TARGET_SYS_close 6
65 
#define TARGET_SYS_unlink 10
66 
#define TARGET_SYS_time 13
67 
#define TARGET_SYS_lseek 19
68 
#define TARGET_SYS_getpid 20
69 
#define TARGET_SYS_access 33
70 
#define TARGET_SYS_kill 37
71 
#define TARGET_SYS_rename 38
72 
#define TARGET_SYS_pipe 42
73 
#define TARGET_SYS_brk 45
74 
#define TARGET_SYS_ioctl 54
75 
#define TARGET_SYS_fcntl 55
76 
#define TARGET_SYS_getppid 64
77 
#define TARGET_SYS_setrlimit 75
78 
#define TARGET_SYS_gettimeofday  78
79 
#define TARGET_SYS_readlink 85
80 
#define TARGET_SYS_munmap 91
81 
#define TARGET_SYS_truncate 92
82 
#define TARGET_SYS_ftruncate 93
83 
#define TARGET_SYS_socketcall 102
84 
#define TARGET_SYS_stat 106
85 
#define TARGET_SYS_fstat 108
86 
#define TARGET_SYS_wait4 114
87 
#define TARGET_SYS_sigreturn 119
88 
#define TARGET_SYS_clone 120
89 
#define TARGET_SYS_uname 122
90 
#define TARGET_SYS_mprotect 125
91 
#define TARGET_SYS_llseek 140
92 
#define TARGET_SYS_writev 146
93 
#define TARGET_SYS__sysctl 149
94 
#define TARGET_SYS_sched_setparam 154
95 
#define TARGET_SYS_sched_getparam 155
96 
#define TARGET_SYS_sched_setscheduler 156
97 
#define TARGET_SYS_sched_getscheduler 157
98 
#define TARGET_SYS_sched_yield 158
99 
#define TARGET_SYS_sched_get_priority_max 159
100 
#define TARGET_SYS_sched_get_priority_min 160
101 
#define TARGET_SYS_mremap 163
102 
#define TARGET_SYS_poll 168
103 
#define TARGET_SYS_rt_sigaction 174
104 
#define TARGET_SYS_rt_sigprocmask 175
105 
#define TARGET_SYS_rt_sigsuspend 179
106 
#define TARGET_SYS_getcwd 183
107 
#define TARGET_SYS_ugetrlimit 191
108 
#define TARGET_SYS_mmap2 192
109 
#define TARGET_SYS_stat64 195
110 
#define TARGET_SYS_lstat64 196
111 
#define TARGET_SYS_fstat64 197
112 
#define TARGET_SYS_geteuid32 201
113 
#define TARGET_SYS_getuid32 199
114 
#define TARGET_SYS_getegid32 202
115 
#define TARGET_SYS_getgid32 200
116 
#define TARGET_SYS_fcntl64 221
117 
#define TARGET_SYS_set_thread_area 243
118 
#define TARGET_SYS_exit_group 252
119 
 
120 
#define TARGET_PROT_READ        0x1
121 
#define TARGET_PROT_WRITE       0x2
122 
#define TARGET_PROT_EXEC        0x4
123 
#define TARGET_PROT_NONE        0x0
124 
 
125 
#define TARGET_MAP_SHARED       0x01
126 
#define TARGET_MAP_PRIVATE      0x02
127 
#define TARGET_MAP_TYPE         0x0f
128 
#define TARGET_MAP_FIXED        0x10
129 
#define TARGET_MAP_ANONYMOUS    0x20
130 
#define TARGET_MAP_DENYWRITE    0x800
131 
 
132 
#define TARGET_CTL_KERN         1
133 
#define TARGET_CTL_VM           2
134 
#define TARGET_CTL_NET          3
135 
#define TARGET_CTL_PROC         4
136 
#define TARGET_CTL_FS           5
137 
#define TARGET_CTL_DEBUG        6
138 
#define TARGET_CTL_DEV          7
139 
#define TARGET_CTL_BUS          8
140 
#define TARGET_CTL_ABI          9
141 
 
142 
#define TARGET_CTL_KERN_VERSION 4
143 
 
144 
/* linux/mman.h */
145 
#define TARGET_MREMAP_MAYMOVE  1
146 
#define TARGET_MREMAP_FIXED    2
147 
 
148 
#define TARGET_TCGETS 0x5401
149 
 
150 
#define TARGET_UTSNAME "#7 Thu Jan 1 00:00:00 MET 2009"
151 
 
152 
/* Seconds since 1970-01-01 to the above date + 10 minutes;
153 
   'date -d "Thu Jan 1 00:00:10 MET 2009" +%s'.  */
154 
#define TARGET_EPOCH 1230764410
155 
 
156 
/* Milliseconds since start of run.  We use the number of syscalls to
157 
   avoid introducing noise in the execution time.  */
158 
#define TARGET_TIME_MS(cpu) ((cpu)->syscalls)
159 
 
160 
/* Seconds as in time(2).  */
161 
#define TARGET_TIME(cpu) (TARGET_EPOCH + TARGET_TIME_MS (cpu) / 1000)
162 
 
163 
#define TARGET_SCHED_OTHER 0
164 
 
165 
#define TARGET_RLIMIT_STACK 3
166 
#define TARGET_RLIMIT_NOFILE 7
167 
 
168 
#define SIM_TARGET_MAX_THREADS 64
169 
#define SIM_MAX_ALLOC_CHUNK (512*1024*1024)
170 
 
171 
/* From linux/sched.h.  */
172 
#define TARGET_CSIGNAL 0x000000ff
173 
#define TARGET_CLONE_VM 0x00000100
174 
#define TARGET_CLONE_FS 0x00000200
175 
#define TARGET_CLONE_FILES 0x00000400
176 
#define TARGET_CLONE_SIGHAND 0x00000800
177 
#define TARGET_CLONE_PID 0x00001000
178 
#define TARGET_CLONE_PTRACE 0x00002000
179 
#define TARGET_CLONE_VFORK 0x00004000
180 
#define TARGET_CLONE_PARENT 0x00008000
181 
#define TARGET_CLONE_THREAD 0x00010000
182 
#define TARGET_CLONE_SIGNAL (TARGET_CLONE_SIGHAND | TARGET_CLONE_THREAD)
183 
 
184 
/* From asm-cris/poll.h.  */
185 
#define TARGET_POLLIN 1
186 
 
187 
/* From asm-cris/signal.h.  */
188 
#define TARGET_SIG_BLOCK 0
189 
#define TARGET_SIG_UNBLOCK 1
190 
#define TARGET_SIG_SETMASK 2
191 
 
192 
#define TARGET_SIG_DFL 0
193 
#define TARGET_SIG_IGN 1
194 
#define TARGET_SIG_ERR ((USI)-1)
195 
 
196 
#define TARGET_SIGHUP 1
197 
#define TARGET_SIGINT 2
198 
#define TARGET_SIGQUIT 3
199 
#define TARGET_SIGILL 4
200 
#define TARGET_SIGTRAP 5
201 
#define TARGET_SIGABRT 6
202 
#define TARGET_SIGIOT 6
203 
#define TARGET_SIGBUS 7
204 
#define TARGET_SIGFPE 8
205 
#define TARGET_SIGKILL 9
206 
#define TARGET_SIGUSR1 10
207 
#define TARGET_SIGSEGV 11
208 
#define TARGET_SIGUSR2 12
209 
#define TARGET_SIGPIPE 13
210 
#define TARGET_SIGALRM 14
211 
#define TARGET_SIGTERM 15
212 
#define TARGET_SIGSTKFLT 16
213 
#define TARGET_SIGCHLD 17
214 
#define TARGET_SIGCONT 18
215 
#define TARGET_SIGSTOP 19
216 
#define TARGET_SIGTSTP 20
217 
#define TARGET_SIGTTIN 21
218 
#define TARGET_SIGTTOU 22
219 
#define TARGET_SIGURG 23
220 
#define TARGET_SIGXCPU 24
221 
#define TARGET_SIGXFSZ 25
222 
#define TARGET_SIGVTALRM 26
223 
#define TARGET_SIGPROF 27
224 
#define TARGET_SIGWINCH 28
225 
#define TARGET_SIGIO 29
226 
#define TARGET_SIGPOLL SIGIO
227 
/* Actually commented out in the kernel header.  */
228 
#define TARGET_SIGLOST 29
229 
#define TARGET_SIGPWR 30
230 
#define TARGET_SIGSYS 31
231 
 
232 
/* From include/asm-cris/signal.h.  */
233 
#define TARGET_SA_NOCLDSTOP 0x00000001
234 
#define TARGET_SA_NOCLDWAIT 0x00000002 /* not supported yet */
235 
#define TARGET_SA_SIGINFO 0x00000004
236 
#define TARGET_SA_ONSTACK 0x08000000
237 
#define TARGET_SA_RESTART 0x10000000
238 
#define TARGET_SA_NODEFER 0x40000000
239 
#define TARGET_SA_RESETHAND 0x80000000
240 
#define TARGET_SA_INTERRUPT 0x20000000 /* dummy -- ignored */
241 
#define TARGET_SA_RESTORER 0x04000000
242 
 
243 
/* From linux/wait.h.  */
244 
#define TARGET_WNOHANG 1
245 
#define TARGET_WUNTRACED 2
246 
#define TARGET___WNOTHREAD 0x20000000
247 
#define TARGET___WALL 0x40000000
248 
#define TARGET___WCLONE 0x80000000
249 
 
250 
/* From linux/limits.h. */
251 
#define TARGET_PIPE_BUF 4096
252 
 
253 
/* From unistd.h.  */
254 
#define TARGET_R_OK 4
255 
#define TARGET_W_OK 2
256 
#define TARGET_X_OK 1
257 
#define TARGET_F_OK 0
258 
 
259 
static const char stat_map[] =
260 
"st_dev,2:space,10:space,4:st_mode,4:st_nlink,4:st_uid,4"
261 
":st_gid,4:st_rdev,2:space,10:st_size,8:st_blksize,4:st_blocks,4"
262 
":space,4:st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:space,4"
263 
":st_ino,8";
264 
 
265 
static const CB_TARGET_DEFS_MAP syscall_map[] =
266 
{
267 
  { CB_SYS_open, TARGET_SYS_open },
268 
  { CB_SYS_close, TARGET_SYS_close },
269 
  { CB_SYS_read, TARGET_SYS_read },
270 
  { CB_SYS_write, TARGET_SYS_write },
271 
  { CB_SYS_lseek, TARGET_SYS_lseek },
272 
  { CB_SYS_unlink, TARGET_SYS_unlink },
273 
  { CB_SYS_getpid, TARGET_SYS_getpid },
274 
  { CB_SYS_fstat, TARGET_SYS_fstat64 },
275 
  { CB_SYS_lstat, TARGET_SYS_lstat64 },
276 
  { CB_SYS_stat, TARGET_SYS_stat64 },
277 
  { CB_SYS_pipe, TARGET_SYS_pipe },
278 
  { CB_SYS_rename, TARGET_SYS_rename },
279 
  { CB_SYS_truncate, TARGET_SYS_truncate },
280 
  { CB_SYS_ftruncate, TARGET_SYS_ftruncate },
281 
  { 0, -1 }
282 
};
283 
 
284 
/* An older, 32-bit-only stat mapping.  */
285 
static const char stat32_map[] =
286 
"st_dev,2:space,2:st_ino,4:st_mode,2:st_nlink,2:st_uid,2"
287 
":st_gid,2:st_rdev,2:space,2:st_size,4:st_blksize,4:st_blocks,4"
288 
":st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:space,12";
289 
 
290 
/* Map for calls using the 32-bit struct stat.  Primarily used by the
291 
   newlib Linux mapping.  */
292 
static const CB_TARGET_DEFS_MAP syscall_stat32_map[] =
293 
{
294 
  { CB_SYS_fstat, TARGET_SYS_fstat },
295 
  { CB_SYS_stat, TARGET_SYS_stat },
296 
  { 0, -1 }
297 
};
298 
 
299 
/* Giving the true value for the running sim process will lead to
300 
   non-time-invariant behavior.  */
301 
#define TARGET_PID 42
302 
 
303 
/* Unfortunately, we don't get this from cris.cpu at the moment, and if
304 
   we did, we'd still don't get a register number with the "16" offset.  */
305 
#define TARGET_SRP_REGNUM (16+11)
306 
 
307 
/* Extracted by applying
308 
   awk '/^#define/ { printf "#ifdef %s\n  { %s, %s },\n#endif\n", $2, $2, $3;}'
309 
   on .../include/asm/errno.h in a GNU/Linux/CRIS installation and
310 
   adjusting the synonyms.  */
311 
 
312 
static const CB_TARGET_DEFS_MAP errno_map[] =
313 
{
314 
#ifdef EPERM
315 
  { EPERM, 1 },
316 
#endif
317 
#ifdef ENOENT
318 
  { ENOENT, 2 },
319 
#endif
320 
#ifdef ESRCH
321 
  { ESRCH, 3 },
322 
#endif
323 
#ifdef EINTR
324 
  { EINTR, 4 },
325 
#endif
326 
#ifdef EIO
327 
  { EIO, 5 },
328 
#endif
329 
#ifdef ENXIO
330 
  { ENXIO, 6 },
331 
#endif
332 
#ifdef E2BIG
333 
  { E2BIG, 7 },
334 
#endif
335 
#ifdef ENOEXEC
336 
  { ENOEXEC, 8 },
337 
#endif
338 
#ifdef EBADF
339 
  { EBADF, 9 },
340 
#endif
341 
#ifdef ECHILD
342 
  { ECHILD, 10 },
343 
#endif
344 
#ifdef EAGAIN
345 
  { EAGAIN, 11 },
346 
#endif
347 
#ifdef ENOMEM
348 
  { ENOMEM, 12 },
349 
#endif
350 
#ifdef EACCES
351 
  { EACCES, 13 },
352 
#endif
353 
#ifdef EFAULT
354 
  { EFAULT, 14 },
355 
#endif
356 
#ifdef ENOTBLK
357 
  { ENOTBLK, 15 },
358 
#endif
359 
#ifdef EBUSY
360 
  { EBUSY, 16 },
361 
#endif
362 
#ifdef EEXIST
363 
  { EEXIST, 17 },
364 
#endif
365 
#ifdef EXDEV
366 
  { EXDEV, 18 },
367 
#endif
368 
#ifdef ENODEV
369 
  { ENODEV, 19 },
370 
#endif
371 
#ifdef ENOTDIR
372 
  { ENOTDIR, 20 },
373 
#endif
374 
#ifdef EISDIR
375 
  { EISDIR, 21 },
376 
#endif
377 
#ifdef EINVAL
378 
  { EINVAL, 22 },
379 
#endif
380 
#ifdef ENFILE
381 
  { ENFILE, 23 },
382 
#endif
383 
#ifdef EMFILE
384 
  { EMFILE, 24 },
385 
#endif
386 
#ifdef ENOTTY
387 
  { ENOTTY, 25 },
388 
#endif
389 
#ifdef ETXTBSY
390 
  { ETXTBSY, 26 },
391 
#endif
392 
#ifdef EFBIG
393 
  { EFBIG, 27 },
394 
#endif
395 
#ifdef ENOSPC
396 
  { ENOSPC, 28 },
397 
#endif
398 
#ifdef ESPIPE
399 
  { ESPIPE, 29 },
400 
#endif
401 
#ifdef EROFS
402 
  { EROFS, 30 },
403 
#endif
404 
#ifdef EMLINK
405 
  { EMLINK, 31 },
406 
#endif
407 
#ifdef EPIPE
408 
  { EPIPE, 32 },
409 
#endif
410 
#ifdef EDOM
411 
  { EDOM, 33 },
412 
#endif
413 
#ifdef ERANGE
414 
  { ERANGE, 34 },
415 
#endif
416 
#ifdef EDEADLK
417 
  { EDEADLK, 35 },
418 
#endif
419 
#ifdef ENAMETOOLONG
420 
  { ENAMETOOLONG, 36 },
421 
#endif
422 
#ifdef ENOLCK
423 
  { ENOLCK, 37 },
424 
#endif
425 
#ifdef ENOSYS
426 
  { ENOSYS, 38 },
427 
#endif
428 
#ifdef ENOTEMPTY
429 
  { ENOTEMPTY, 39 },
430 
#endif
431 
#ifdef ELOOP
432 
  { ELOOP, 40 },
433 
#endif
434 
#ifdef EWOULDBLOCK
435 
  { EWOULDBLOCK, 11 },
436 
#endif
437 
#ifdef ENOMSG
438 
  { ENOMSG, 42 },
439 
#endif
440 
#ifdef EIDRM
441 
  { EIDRM, 43 },
442 
#endif
443 
#ifdef ECHRNG
444 
  { ECHRNG, 44 },
445 
#endif
446 
#ifdef EL2NSYNC
447 
  { EL2NSYNC, 45 },
448 
#endif
449 
#ifdef EL3HLT
450 
  { EL3HLT, 46 },
451 
#endif
452 
#ifdef EL3RST
453 
  { EL3RST, 47 },
454 
#endif
455 
#ifdef ELNRNG
456 
  { ELNRNG, 48 },
457 
#endif
458 
#ifdef EUNATCH
459 
  { EUNATCH, 49 },
460 
#endif
461 
#ifdef ENOCSI
462 
  { ENOCSI, 50 },
463 
#endif
464 
#ifdef EL2HLT
465 
  { EL2HLT, 51 },
466 
#endif
467 
#ifdef EBADE
468 
  { EBADE, 52 },
469 
#endif
470 
#ifdef EBADR
471 
  { EBADR, 53 },
472 
#endif
473 
#ifdef EXFULL
474 
  { EXFULL, 54 },
475 
#endif
476 
#ifdef ENOANO
477 
  { ENOANO, 55 },
478 
#endif
479 
#ifdef EBADRQC
480 
  { EBADRQC, 56 },
481 
#endif
482 
#ifdef EBADSLT
483 
  { EBADSLT, 57 },
484 
#endif
485 
#ifdef EDEADLOCK
486 
  { EDEADLOCK, 35 },
487 
#endif
488 
#ifdef EBFONT
489 
  { EBFONT, 59 },
490 
#endif
491 
#ifdef ENOSTR
492 
  { ENOSTR, 60 },
493 
#endif
494 
#ifdef ENODATA
495 
  { ENODATA, 61 },
496 
#endif
497 
#ifdef ETIME
498 
  { ETIME, 62 },
499 
#endif
500 
#ifdef ENOSR
501 
  { ENOSR, 63 },
502 
#endif
503 
#ifdef ENONET
504 
  { ENONET, 64 },
505 
#endif
506 
#ifdef ENOPKG
507 
  { ENOPKG, 65 },
508 
#endif
509 
#ifdef EREMOTE
510 
  { EREMOTE, 66 },
511 
#endif
512 
#ifdef ENOLINK
513 
  { ENOLINK, 67 },
514 
#endif
515 
#ifdef EADV
516 
  { EADV, 68 },
517 
#endif
518 
#ifdef ESRMNT
519 
  { ESRMNT, 69 },
520 
#endif
521 
#ifdef ECOMM
522 
  { ECOMM, 70 },
523 
#endif
524 
#ifdef EPROTO
525 
  { EPROTO, 71 },
526 
#endif
527 
#ifdef EMULTIHOP
528 
  { EMULTIHOP, 72 },
529 
#endif
530 
#ifdef EDOTDOT
531 
  { EDOTDOT, 73 },
532 
#endif
533 
#ifdef EBADMSG
534 
  { EBADMSG, 74 },
535 
#endif
536 
#ifdef EOVERFLOW
537 
  { EOVERFLOW, 75 },
538 
#endif
539 
#ifdef ENOTUNIQ
540 
  { ENOTUNIQ, 76 },
541 
#endif
542 
#ifdef EBADFD
543 
  { EBADFD, 77 },
544 
#endif
545 
#ifdef EREMCHG
546 
  { EREMCHG, 78 },
547 
#endif
548 
#ifdef ELIBACC
549 
  { ELIBACC, 79 },
550 
#endif
551 
#ifdef ELIBBAD
552 
  { ELIBBAD, 80 },
553 
#endif
554 
#ifdef ELIBSCN
555 
  { ELIBSCN, 81 },
556 
#endif
557 
#ifdef ELIBMAX
558 
  { ELIBMAX, 82 },
559 
#endif
560 
#ifdef ELIBEXEC
561 
  { ELIBEXEC, 83 },
562 
#endif
563 
#ifdef EILSEQ
564 
  { EILSEQ, 84 },
565 
#endif
566 
#ifdef ERESTART
567 
  { ERESTART, 85 },
568 
#endif
569 
#ifdef ESTRPIPE
570 
  { ESTRPIPE, 86 },
571 
#endif
572 
#ifdef EUSERS
573 
  { EUSERS, 87 },
574 
#endif
575 
#ifdef ENOTSOCK
576 
  { ENOTSOCK, 88 },
577 
#endif
578 
#ifdef EDESTADDRREQ
579 
  { EDESTADDRREQ, 89 },
580 
#endif
581 
#ifdef EMSGSIZE
582 
  { EMSGSIZE, 90 },
583 
#endif
584 
#ifdef EPROTOTYPE
585 
  { EPROTOTYPE, 91 },
586 
#endif
587 
#ifdef ENOPROTOOPT
588 
  { ENOPROTOOPT, 92 },
589 
#endif
590 
#ifdef EPROTONOSUPPORT
591 
  { EPROTONOSUPPORT, 93 },
592 
#endif
593 
#ifdef ESOCKTNOSUPPORT
594 
  { ESOCKTNOSUPPORT, 94 },
595 
#endif
596 
#ifdef EOPNOTSUPP
597 
  { EOPNOTSUPP, 95 },
598 
#endif
599 
#ifdef EPFNOSUPPORT
600 
  { EPFNOSUPPORT, 96 },
601 
#endif
602 
#ifdef EAFNOSUPPORT
603 
  { EAFNOSUPPORT, 97 },
604 
#endif
605 
#ifdef EADDRINUSE
606 
  { EADDRINUSE, 98 },
607 
#endif
608 
#ifdef EADDRNOTAVAIL
609 
  { EADDRNOTAVAIL, 99 },
610 
#endif
611 
#ifdef ENETDOWN
612 
  { ENETDOWN, 100 },
613 
#endif
614 
#ifdef ENETUNREACH
615 
  { ENETUNREACH, 101 },
616 
#endif
617 
#ifdef ENETRESET
618 
  { ENETRESET, 102 },
619 
#endif
620 
#ifdef ECONNABORTED
621 
  { ECONNABORTED, 103 },
622 
#endif
623 
#ifdef ECONNRESET
624 
  { ECONNRESET, 104 },
625 
#endif
626 
#ifdef ENOBUFS
627 
  { ENOBUFS, 105 },
628 
#endif
629 
#ifdef EISCONN
630 
  { EISCONN, 106 },
631 
#endif
632 
#ifdef ENOTCONN
633 
  { ENOTCONN, 107 },
634 
#endif
635 
#ifdef ESHUTDOWN
636 
  { ESHUTDOWN, 108 },
637 
#endif
638 
#ifdef ETOOMANYREFS
639 
  { ETOOMANYREFS, 109 },
640 
#endif
641 
#ifdef ETIMEDOUT
642 
  { ETIMEDOUT, 110 },
643 
#endif
644 
#ifdef ECONNREFUSED
645 
  { ECONNREFUSED, 111 },
646 
#endif
647 
#ifdef EHOSTDOWN
648 
  { EHOSTDOWN, 112 },
649 
#endif
650 
#ifdef EHOSTUNREACH
651 
  { EHOSTUNREACH, 113 },
652 
#endif
653 
#ifdef EALREADY
654 
  { EALREADY, 114 },
655 
#endif
656 
#ifdef EINPROGRESS
657 
  { EINPROGRESS, 115 },
658 
#endif
659 
#ifdef ESTALE
660 
  { ESTALE, 116 },
661 
#endif
662 
#ifdef EUCLEAN
663 
  { EUCLEAN, 117 },
664 
#endif
665 
#ifdef ENOTNAM
666 
  { ENOTNAM, 118 },
667 
#endif
668 
#ifdef ENAVAIL
669 
  { ENAVAIL, 119 },
670 
#endif
671 
#ifdef EISNAM
672 
  { EISNAM, 120 },
673 
#endif
674 
#ifdef EREMOTEIO
675 
  { EREMOTEIO, 121 },
676 
#endif
677 
#ifdef EDQUOT
678 
  { EDQUOT, 122 },
679 
#endif
680 
#ifdef ENOMEDIUM
681 
  { ENOMEDIUM, 123 },
682 
#endif
683 
#ifdef EMEDIUMTYPE
684 
  { EMEDIUMTYPE, 124 },
685 
#endif
686 
  { 0, -1 }
687 
};
688 
 
689 
/* Extracted by applying
690 
   perl -ne 'if ($_ =~ /^#define/) { split;
691 
     printf "#ifdef $_[1]\n  { %s, 0x%x },\n#endif\n",
692 
             $_[1], $_[2] =~ /^0/ ? oct($_[2]) : $_[2];}'
693 
   on pertinent parts of .../include/asm/fcntl.h in a GNU/Linux/CRIS
694 
   installation and removing synonyms and unnecessary items.  Don't
695 
   forget the end-marker.  */
696 
 
697 
/* These we treat specially, as they're used in the fcntl F_GETFL
698 
   syscall.  For consistency, open_map is also manually edited to use
699 
   these macros.  */
700 
#define TARGET_O_ACCMODE 0x3
701 
#define TARGET_O_RDONLY 0x0
702 
#define TARGET_O_WRONLY 0x1
703 
 
704 
static const CB_TARGET_DEFS_MAP open_map[] = {
705 
#ifdef O_ACCMODE
706 
  { O_ACCMODE, TARGET_O_ACCMODE },
707 
#endif
708 
#ifdef O_RDONLY
709 
  { O_RDONLY, TARGET_O_RDONLY },
710 
#endif
711 
#ifdef O_WRONLY
712 
  { O_WRONLY, TARGET_O_WRONLY },
713 
#endif
714 
#ifdef O_RDWR
715 
  { O_RDWR, 0x2 },
716 
#endif
717 
#ifdef O_CREAT
718 
  { O_CREAT, 0x40 },
719 
#endif
720 
#ifdef O_EXCL
721 
  { O_EXCL, 0x80 },
722 
#endif
723 
#ifdef O_NOCTTY
724 
  { O_NOCTTY, 0x100 },
725 
#endif
726 
#ifdef O_TRUNC
727 
  { O_TRUNC, 0x200 },
728 
#endif
729 
#ifdef O_APPEND
730 
  { O_APPEND, 0x400 },
731 
#endif
732 
#ifdef O_NONBLOCK
733 
  { O_NONBLOCK, 0x800 },
734 
#endif
735 
#ifdef O_NDELAY
736 
  { O_NDELAY, 0x0 },
737 
#endif
738 
#ifdef O_SYNC
739 
  { O_SYNC, 0x1000 },
740 
#endif
741 
#ifdef FASYNC
742 
  { FASYNC, 0x2000 },
743 
#endif
744 
#ifdef O_DIRECT
745 
  { O_DIRECT, 0x4000 },
746 
#endif
747 
#ifdef O_LARGEFILE
748 
  { O_LARGEFILE, 0x8000 },
749 
#endif
750 
#ifdef O_DIRECTORY
751 
  { O_DIRECTORY, 0x10000 },
752 
#endif
753 
#ifdef O_NOFOLLOW
754 
  { O_NOFOLLOW, 0x20000 },
755 
#endif
756 
  { -1, -1 }
757 
};
758 
 
759 
/* Let's be less drastic and more traceable.  FIXME: mark as noreturn.  */
760 
#define abort()                                                 \
761 
  sim_io_error (sd, "simulator unhandled condition at %s:%d",   \
762 
                __FUNCTION__, __LINE__)
763 
 
764 
/* Needed for the cris_pipe_nonempty and cris_pipe_empty syscalls.  */
765 
static SIM_CPU *current_cpu_for_cb_callback;
766 
 
767 
static int syscall_read_mem (host_callback *, struct cb_syscall *,
768 
                             unsigned long, char *, int);
769 
static int syscall_write_mem (host_callback *, struct cb_syscall *,
770 
                              unsigned long, const char *, int);
771 
static USI create_map (SIM_DESC, struct cris_sim_mmapped_page **,
772 
                       USI addr, USI len);
773 
static USI unmap_pages (SIM_DESC, struct cris_sim_mmapped_page **,
774 
                       USI addr, USI len);
775 
static USI is_mapped (SIM_DESC, struct cris_sim_mmapped_page **,
776 
                       USI addr, USI len);
777 
static void dump_statistics (SIM_CPU *current_cpu);
778 
static void make_first_thread (SIM_CPU *current_cpu);
779 
 
780 
/* Read/write functions for system call interface.  */
781 
 
782 
static int
783 
syscall_read_mem (host_callback *cb ATTRIBUTE_UNUSED,
784 
                  struct cb_syscall *sc,
785 
                  unsigned long taddr, char *buf, int bytes)
786 
{
787 
  SIM_DESC sd = (SIM_DESC) sc->p1;
788 
  SIM_CPU *cpu = (SIM_CPU *) sc->p2;
789 
 
790 
  return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes);
791 
}
792 
 
793 
static int
794 
syscall_write_mem (host_callback *cb ATTRIBUTE_UNUSED,
795 
                   struct cb_syscall *sc,
796 
                   unsigned long taddr, const char *buf, int bytes)
797 
{
798 
  SIM_DESC sd = (SIM_DESC) sc->p1;
799 
  SIM_CPU *cpu = (SIM_CPU *) sc->p2;
800 
 
801 
  return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
802 
}
803 
 
804 
/* When we risk running self-modified code (as in trampolines), this is
805 
   called from special-case insns.  The silicon CRIS CPU:s have enough
806 
   cache snooping implemented making this a simulator-only issue.  Tests:
807 
   gcc.c-torture/execute/931002-1.c execution, -O3 -g
808 
   gcc.c-torture/execute/931002-1.c execution, -O3 -fomit-frame-pointer.  */
809 
 
810 
void
811 
cris_flush_simulator_decode_cache (SIM_CPU *current_cpu,
812 
                                   USI pc ATTRIBUTE_UNUSED)
813 
{
814 
  SIM_DESC sd = CPU_STATE (current_cpu);
815 
 
816 
#if WITH_SCACHE
817 
  if (USING_SCACHE_P (sd))
818 
    scache_flush_cpu (current_cpu);
819 
#endif
820 
}
821 
 
822 
/* Output statistics at the end of a run.  */
823 
static void
824 
dump_statistics (SIM_CPU *current_cpu)
825 
{
826 
  SIM_DESC sd = CPU_STATE (current_cpu);
827 
  CRIS_MISC_PROFILE *profp
828 
    = CPU_CRIS_MISC_PROFILE (current_cpu);
829 
  unsigned64 total = profp->basic_cycle_count;
830 
  const char *textmsg = "Basic clock cycles, total @: %llu\n";
831 
 
832 
  /* The --cris-stats={basic|unaligned|schedulable|all} counts affect
833 
     what's included in the "total" count only.  */
834 
  switch (CPU_CRIS_MISC_PROFILE (current_cpu)->flags
835 
          & FLAG_CRIS_MISC_PROFILE_ALL)
836 
    {
837 
    case FLAG_CRIS_MISC_PROFILE_SIMPLE:
838 
      break;
839 
 
840 
    case (FLAG_CRIS_MISC_PROFILE_UNALIGNED | FLAG_CRIS_MISC_PROFILE_SIMPLE):
841 
      textmsg
842 
        = "Clock cycles including stall cycles for unaligned accesses @: %llu\n";
843 
      total += profp->unaligned_mem_dword_count;
844 
      break;
845 
 
846 
    case (FLAG_CRIS_MISC_PROFILE_SCHEDULABLE | FLAG_CRIS_MISC_PROFILE_SIMPLE):
847 
      textmsg = "Schedulable clock cycles, total @: %llu\n";
848 
      total
849 
        += (profp->memsrc_stall_count
850 
            + profp->memraw_stall_count
851 
            + profp->movemsrc_stall_count
852 
            + profp->movemdst_stall_count
853 
            + profp->mulsrc_stall_count
854 
            + profp->jumpsrc_stall_count
855 
            + profp->unaligned_mem_dword_count);
856 
      break;
857 
 
858 
    case FLAG_CRIS_MISC_PROFILE_ALL:
859 
      textmsg = "All accounted clock cycles, total @: %llu\n";
860 
      total
861 
        += (profp->memsrc_stall_count
862 
            + profp->memraw_stall_count
863 
            + profp->movemsrc_stall_count
864 
            + profp->movemdst_stall_count
865 
            + profp->movemaddr_stall_count
866 
            + profp->mulsrc_stall_count
867 
            + profp->jumpsrc_stall_count
868 
            + profp->branch_stall_count
869 
            + profp->jumptarget_stall_count
870 
            + profp->unaligned_mem_dword_count);
871 
      break;
872 
 
873 
    default:
874 
      abort ();
875 
 
876 
      sim_io_eprintf (sd,
877 
                      "Internal inconsistency at %s:%d",
878 
                      __FILE__, __LINE__);
879 
      sim_engine_halt (sd, current_cpu, NULL, 0,
880 
                       sim_stopped, SIM_SIGILL);
881 
    }
882 
 
883 
  /* Historically, these messages have gone to stderr, so we'll keep it
884 
     that way.  It's also easier to then tell it from normal program
885 
     output.  FIXME: Add redirect option like "run -e file".  */
886 
  sim_io_eprintf (sd, textmsg, total);
887 
 
888 
  /* For v32, unaligned_mem_dword_count should always be 0.  For
889 
     v10, memsrc_stall_count should always be 0.  */
890 
  sim_io_eprintf (sd, "Memory source stall cycles: %llu\n",
891 
                  (unsigned long long) (profp->memsrc_stall_count
892 
                                        + profp->unaligned_mem_dword_count));
893 
  sim_io_eprintf (sd, "Memory read-after-write stall cycles: %llu\n",
894 
                  (unsigned long long) profp->memraw_stall_count);
895 
  sim_io_eprintf (sd, "Movem source stall cycles: %llu\n",
896 
                  (unsigned long long) profp->movemsrc_stall_count);
897 
  sim_io_eprintf (sd, "Movem destination stall cycles: %llu\n",
898 
                  (unsigned long long) profp->movemdst_stall_count);
899 
  sim_io_eprintf (sd, "Movem address stall cycles: %llu\n",
900 
                  (unsigned long long) profp->movemaddr_stall_count);
901 
  sim_io_eprintf (sd, "Multiplication source stall cycles: %llu\n",
902 
                  (unsigned long long) profp->mulsrc_stall_count);
903 
  sim_io_eprintf (sd, "Jump source stall cycles: %llu\n",
904 
                  (unsigned long long) profp->jumpsrc_stall_count);
905 
  sim_io_eprintf (sd, "Branch misprediction stall cycles: %llu\n",
906 
                  (unsigned long long) profp->branch_stall_count);
907 
  sim_io_eprintf (sd, "Jump target stall cycles: %llu\n",
908 
                  (unsigned long long) profp->jumptarget_stall_count);
909 
}
910 
 
911 
/* Check whether any part of [addr .. addr + len - 1] is already mapped.
912 
   Return 1 if a overlap detected, 0 otherwise.  */
913 
 
914 
static USI
915 
is_mapped (SIM_DESC sd ATTRIBUTE_UNUSED,
916 
           struct cris_sim_mmapped_page **rootp,
917 
           USI addr, USI len)
918 
{
919 
  struct cris_sim_mmapped_page *mapp;
920 
 
921 
  if (len == 0 || (len & 8191))
922 
    abort ();
923 
 
924 
  /* Iterate over the reverse-address sorted pages until we find a page in
925 
     or lower than the checked area.  */
926 
  for (mapp = *rootp; mapp != NULL && mapp->addr >= addr; mapp = mapp->prev)
927 
    if (mapp->addr < addr + len && mapp->addr >= addr)
928 
      return 1;
929 
 
930 
  return 0;
931 
}
932 
 
933 
/* Check whether any part of [addr .. addr + len - 1] is *un*mapped.
934 
   Return 1 if the whole area is mapped, 0 otherwise.  */
935 
 
936 
static USI
937 
is_mapped_only (SIM_DESC sd ATTRIBUTE_UNUSED,
938 
                struct cris_sim_mmapped_page **rootp,
939 
                USI addr, USI len)
940 
{
941 
  struct cris_sim_mmapped_page *mapp;
942 
 
943 
  if (len == 0 || (len & 8191))
944 
    abort ();
945 
 
946 
  /* Iterate over the reverse-address sorted pages until we find a page
947 
     lower than the checked area.  */
948 
  for (mapp = *rootp; mapp != NULL && mapp->addr >= addr; mapp = mapp->prev)
949 
    if (addr == mapp->addr && len == 8192)
950 
      return 1;
951 
    else if (addr + len > mapp->addr)
952 
      len -= 8192;
953 
 
954 
  return 0;
955 
}
956 
 
957 
/* Debug helper; to be run from gdb.  */
958 
 
959 
void
960 
cris_dump_map (SIM_CPU *current_cpu)
961 
{
962 
  struct cris_sim_mmapped_page *mapp;
963 
  USI start, end;
964 
 
965 
  for (mapp = current_cpu->highest_mmapped_page,
966 
         start = mapp == NULL ? 0 : mapp->addr + 8192,
967 
         end = mapp == NULL ? 0 : mapp->addr + 8191;
968 
       mapp != NULL;
969 
       mapp = mapp->prev)
970 
    {
971 
      if (mapp->addr != start - 8192)
972 
        {
973 
          sim_io_eprintf (CPU_STATE (current_cpu), "0x%x..0x%x\n", start, end);
974 
          end = mapp->addr + 8191;
975 
        }
976 
 
977 
      start = mapp->addr;
978 
    }
979 
 
980 
  if (current_cpu->highest_mmapped_page != NULL)
981 
    sim_io_eprintf (CPU_STATE (current_cpu), "0x%x..0x%x\n", start, end);
982 
}
983 
 
984 
/* Create mmapped memory.  ADDR is -1 if any address will do.  Caller
985 
   must make sure that the address isn't already mapped.  */
986 
 
987 
static USI
988 
create_map (SIM_DESC sd, struct cris_sim_mmapped_page **rootp, USI addr,
989 
            USI len)
990 
{
991 
  struct cris_sim_mmapped_page *mapp;
992 
  struct cris_sim_mmapped_page **higher_prevp = rootp;
993 
  USI new_addr = 0x40000000;
994 
 
995 
  if (addr != (USI) -1)
996 
    new_addr = addr;
997 
  else if (*rootp && rootp[0]->addr >= new_addr)
998 
    new_addr = rootp[0]->addr + 8192;
999 
 
1000 
  if (len != 8192)
1001 
    {
1002 
      USI page_addr;
1003 
 
1004 
      if (len & 8191)
1005 
        /* Which is better: return an error for this, or just round it up?  */
1006 
        abort ();
1007 
 
1008 
      /* Do a recursive call for each page in the request.  */
1009 
      for (page_addr = new_addr; len != 0; page_addr += 8192, len -= 8192)
1010 
        if (create_map (sd, rootp, page_addr, 8192) >= (USI) -8191)
1011 
          abort ();
1012 
 
1013 
      return new_addr;
1014 
    }
1015 
 
1016 
  for (mapp = *rootp;
1017 
       mapp != NULL && mapp->addr > new_addr;
1018 
       mapp = mapp->prev)
1019 
    higher_prevp = &mapp->prev;
1020 
 
1021 
  /* Assert for consistency that we don't create duplicate maps.  */
1022 
  if (is_mapped (sd, rootp, new_addr, len))
1023 
    abort ();
1024 
 
1025 
  /* Allocate the new page, on the next higher page from the last one
1026 
     allocated, and link in the new descriptor before previous ones.  */
1027 
  mapp = malloc (sizeof (*mapp));
1028 
 
1029 
  if (mapp == NULL)
1030 
    return (USI) -ENOMEM;
1031 
 
1032 
  sim_core_attach (sd, NULL, 0, access_read_write_exec, 0,
1033 
                   new_addr, len,
1034 
                   0, NULL, NULL);
1035 
 
1036 
  mapp->addr = new_addr;
1037 
  mapp->prev = *higher_prevp;
1038 
  *higher_prevp = mapp;
1039 
 
1040 
  return new_addr;
1041 
}
1042 
 
1043 
/* Unmap one or more pages.  */
1044 
 
1045 
static USI
1046 
unmap_pages (SIM_DESC sd, struct cris_sim_mmapped_page **rootp, USI addr,
1047 
            USI len)
1048 
{
1049 
  struct cris_sim_mmapped_page *mapp;
1050 
  struct cris_sim_mmapped_page **higher_prevp = rootp;
1051 
 
1052 
  if (len != 8192)
1053 
    {
1054 
      USI page_addr;
1055 
      int ret = 0;
1056 
 
1057 
      if (len & 8191)
1058 
        /* Which is better: return an error for this, or just round it up?  */
1059 
        abort ();
1060 
 
1061 
      /* Loop backwards to make each call is O(1) over the number of pages
1062 
         allocated, if we're unmapping from the high end of the pages.  */
1063 
      for (page_addr = addr + len - 8192;
1064 
           page_addr > addr;
1065 
           page_addr -= 8192)
1066 
        if (unmap_pages (sd, rootp, page_addr, 8192))
1067 
          ret = EINVAL;
1068 
 
1069 
      if (unmap_pages (sd, rootp, addr, 8192))
1070 
        ret = EINVAL;
1071 
 
1072 
      return ret;
1073 
    }
1074 
 
1075 
  for (mapp = *rootp; mapp != NULL && mapp->addr > addr; mapp = mapp->prev)
1076 
    higher_prevp = &mapp->prev;
1077 
 
1078 
  if (mapp == NULL || mapp->addr != addr)
1079 
    return EINVAL;
1080 
 
1081 
  *higher_prevp = mapp->prev;
1082 
  sim_core_detach (sd, NULL, 0, 0, addr);
1083 
  free (mapp);
1084 
  return 0;
1085 
}
1086 
 
1087 
/* The semantic code invokes this for illegal (unrecognized) instructions.  */
1088 
 
1089 
SEM_PC
1090 
sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
1091 
{
1092 
  SIM_DESC sd = CPU_STATE (current_cpu);
1093 
 
1094 
  sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
1095 
  return vpc;
1096 
}
1097 
 
1098 
/* Handlers from the CGEN description that should not be called.  */
1099 
 
1100 
USI
1101 
cris_bmod_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED,
1102 
                   UINT srcreg ATTRIBUTE_UNUSED,
1103 
                   USI dstreg ATTRIBUTE_UNUSED)
1104 
{
1105 
  SIM_DESC sd = CPU_STATE (current_cpu);
1106 
  abort ();
1107 
}
1108 
 
1109 
void
1110 
h_supr_set_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED,
1111 
                    UINT index ATTRIBUTE_UNUSED,
1112 
                    USI page ATTRIBUTE_UNUSED,
1113 
                    USI newval ATTRIBUTE_UNUSED)
1114 
{
1115 
  SIM_DESC sd = CPU_STATE (current_cpu);
1116 
  abort ();
1117 
}
1118 
 
1119 
USI
1120 
h_supr_get_handler (SIM_CPU *current_cpu ATTRIBUTE_UNUSED,
1121 
                    UINT index ATTRIBUTE_UNUSED,
1122 
                    USI page ATTRIBUTE_UNUSED)
1123 
{
1124 
  SIM_DESC sd = CPU_STATE (current_cpu);
1125 
  abort ();
1126 
}
1127 
 
1128 
/* Swap one context for another.  */
1129 
 
1130 
static void
1131 
schedule (SIM_CPU *current_cpu, int next)
1132 
{
1133 
  /* Need to mark context-switches in the trace output.  */
1134 
  if ((CPU_CRIS_MISC_PROFILE (current_cpu)->flags
1135 
       & FLAG_CRIS_MISC_PROFILE_XSIM_TRACE))
1136 
    cris_trace_printf (CPU_STATE (current_cpu), current_cpu,
1137 
                       "\t#:%d\n", next);
1138 
 
1139 
  /* Copy the current context (if there is one) to its slot.  */
1140 
  if (current_cpu->thread_data[current_cpu->threadno].cpu_context)
1141 
    memcpy (current_cpu->thread_data[current_cpu->threadno].cpu_context,
1142 
            &current_cpu->cpu_data_placeholder,
1143 
            current_cpu->thread_cpu_data_size);
1144 
 
1145 
  /* Copy the new context from its slot.  */
1146 
  memcpy (&current_cpu->cpu_data_placeholder,
1147 
          current_cpu->thread_data[next].cpu_context,
1148 
          current_cpu->thread_cpu_data_size);
1149 
 
1150 
  /* Update needed stuff to indicate the new context.  */
1151 
  current_cpu->threadno = next;
1152 
 
1153 
  /* Handle pending signals.  */
1154 
  if (current_cpu->thread_data[next].sigpending
1155 
      /* We don't run nested signal handlers.  This means that pause(2)
1156 
         and sigsuspend(2) do not work in sighandlers, but that
1157 
         shouldn't be too hard a restriction.  It also greatly
1158 
         simplifies the code.  */
1159 
      && current_cpu->thread_data[next].cpu_context_atsignal == NULL)
1160 
  {
1161 
    int sig;
1162 
 
1163 
    /* See if there's really a pending, non-blocked handler.  We don't
1164 
       queue signals, so just use the first one in ascending order.  */
1165 
    for (sig = 0; sig < 64; sig++)
1166 
      if (current_cpu->thread_data[next].sigdata[sig].pending
1167 
          && !current_cpu->thread_data[next].sigdata[sig].blocked)
1168 
      {
1169 
        bfd_byte regbuf[4];
1170 
        USI sp;
1171 
        int i;
1172 
        USI blocked;
1173 
        USI pc = sim_pc_get (current_cpu);
1174 
 
1175 
        /* It's simpler to save the CPU context inside the simulator
1176 
           than on the stack.  */
1177 
        current_cpu->thread_data[next].cpu_context_atsignal
1178 
          = (*current_cpu
1179 
             ->make_thread_cpu_data) (current_cpu,
1180 
                                      current_cpu->thread_data[next]
1181 
                                      .cpu_context);
1182 
 
1183 
        (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_SP, regbuf, 4);
1184 
        sp = bfd_getl32 (regbuf);
1185 
 
1186 
        /* Make sure we have an aligned stack.  */
1187 
        sp &= ~3;
1188 
 
1189 
        /* Make room for the signal frame, aligned.  FIXME: Check that
1190 
           the memory exists, map it in if absent.  (BTW, should also
1191 
           implement on-access automatic stack allocation).  */
1192 
        sp -= 20;
1193 
 
1194 
        /* This isn't the same signal frame as the kernel uses, because
1195 
           we don't want to bother getting all registers on and off the
1196 
           stack.  */
1197 
 
1198 
        /* First, we store the currently blocked signals.  */
1199 
        blocked = 0;
1200 
        for (i = 0; i < 32; i++)
1201 
          blocked
1202 
            |= current_cpu->thread_data[next].sigdata[i + 1].blocked << i;
1203 
        sim_core_write_aligned_4 (current_cpu, pc, 0, sp, blocked);
1204 
        blocked = 0;
1205 
        for (i = 0; i < 31; i++)
1206 
          blocked
1207 
            |= current_cpu->thread_data[next].sigdata[i + 33].blocked << i;
1208 
        sim_core_write_aligned_4 (current_cpu, pc, 0, sp + 4, blocked);
1209 
 
1210 
        /* Then, the actual instructions.  This is CPU-specific, but we
1211 
           use instructions from the common subset for v10 and v32 which
1212 
           should be safe for the time being but could be parametrized
1213 
           if need be.  */
1214 
        /* MOVU.W [PC+],R9.  */
1215 
        sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 8, 0x9c5f);
1216 
        /* .WORD TARGET_SYS_sigreturn.  */
1217 
        sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 10,
1218 
                                  TARGET_SYS_sigreturn);
1219 
        /* BREAK 13.  */
1220 
        sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 12, 0xe93d);
1221 
 
1222 
        /* NOP (on v32; it's SETF on v10, but is the correct compatible
1223 
           instruction.  Still, it doesn't matter because v10 has no
1224 
           delay slot for BREAK so it will not be executed).  */
1225 
        sim_core_write_aligned_2 (current_cpu, pc, 0, sp + 16, 0x05b0);
1226 
 
1227 
        /* Modify registers to hold the right values for the sighandler
1228 
           context: updated stackpointer and return address pointing to
1229 
           the sigreturn stub.  */
1230 
        bfd_putl32 (sp, regbuf);
1231 
        (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_SP, regbuf, 4);
1232 
        bfd_putl32 (sp + 8, regbuf);
1233 
        (*CPU_REG_STORE (current_cpu)) (current_cpu, TARGET_SRP_REGNUM,
1234 
                                        regbuf, 4);
1235 
 
1236 
        current_cpu->thread_data[next].sigdata[sig].pending = 0;
1237 
 
1238 
        /* Block this signal (for the duration of the sighandler).  */
1239 
        current_cpu->thread_data[next].sigdata[sig].blocked = 1;
1240 
 
1241 
        sim_pc_set (current_cpu, current_cpu->sighandler[sig]);
1242 
        bfd_putl32 (sig, regbuf);
1243 
        (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R10,
1244 
                                        regbuf, 4);
1245 
 
1246 
        /* We ignore a SA_SIGINFO flag in the sigaction call; the code I
1247 
           needed all this for, specifies a SA_SIGINFO call but treats it
1248 
           like an ordinary sighandler; only the signal number argument is
1249 
           inspected.  To make future need to implement SA_SIGINFO
1250 
           correctly possible, we set the siginfo argument register to a
1251 
           magic (hopefully non-address) number.  (NB: then, you should
1252 
           just need to pass the siginfo argument; it seems you probably
1253 
           don't need to implement the specific rt_sigreturn.)  */
1254 
        bfd_putl32 (0xbad5161f, regbuf);
1255 
        (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R11,
1256 
                                        regbuf, 4);
1257 
 
1258 
        /* The third argument is unused and the kernel sets it to 0.  */
1259 
        bfd_putl32 (0, regbuf);
1260 
        (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R12,
1261 
                                        regbuf, 4);
1262 
        return;
1263 
      }
1264 
 
1265 
    /* No, there actually was no pending signal for this thread.  Reset
1266 
       this flag.  */
1267 
    current_cpu->thread_data[next].sigpending = 0;
1268 
  }
1269 
}
1270 
 
1271 
/* Reschedule the simplest possible way until something else is absolutely
1272 
   necessary:
1273 
   - A. Find the next process (round-robin) that doesn't have at_syscall
1274 
        set, schedule it.
1275 
   - B. If there is none, just run the next process, round-robin.
1276 
   - Clear at_syscall for the current process.  */
1277 
 
1278 
static void
1279 
reschedule (SIM_CPU *current_cpu)
1280 
{
1281 
  SIM_DESC sd = CPU_STATE (current_cpu);
1282 
  int i;
1283 
 
1284 
  /* Iterate over all thread slots, because after a few thread creations
1285 
     and exits, we don't know where the live ones are.  */
1286 
  for (i = (current_cpu->threadno + 1) % SIM_TARGET_MAX_THREADS;
1287 
       i != current_cpu->threadno;
1288 
       i = (i + 1) % SIM_TARGET_MAX_THREADS)
1289 
    if (current_cpu->thread_data[i].cpu_context
1290 
        && current_cpu->thread_data[i].at_syscall == 0)
1291 
      {
1292 
        schedule (current_cpu, i);
1293 
        return;
1294 
      }
1295 
 
1296 
  /* Pick any next live thread.  */
1297 
  for (i = (current_cpu->threadno + 1) % SIM_TARGET_MAX_THREADS;
1298 
       i != current_cpu->threadno;
1299 
       i = (i + 1) % SIM_TARGET_MAX_THREADS)
1300 
    if (current_cpu->thread_data[i].cpu_context)
1301 
      {
1302 
        schedule (current_cpu, i);
1303 
        return;
1304 
      }
1305 
 
1306 
  /* More than one live thread, but we couldn't find the next one?  */
1307 
  abort ();
1308 
}
1309 
 
1310 
/* Set up everything to receive (or IGN) an incoming signal to the
1311 
   current context.  */
1312 
 
1313 
static int
1314 
deliver_signal (SIM_CPU *current_cpu, int sig, unsigned int pid)
1315 
{
1316 
  int i;
1317 
  USI pc = sim_pc_get (current_cpu);
1318 
 
1319 
  /* Find the thread index of the pid. */
1320 
  for (i = 0; i < SIM_TARGET_MAX_THREADS; i++)
1321 
    /* Apparently it's ok to send signals to zombies (so a check for
1322 
       current_cpu->thread_data[i].cpu_context != NULL would be
1323 
       wrong). */
1324 
    if (current_cpu->thread_data[i].threadid == pid - TARGET_PID)
1325 
      {
1326 
        if (sig < 64)
1327 
          switch (current_cpu->sighandler[sig])
1328 
            {
1329 
            case TARGET_SIG_DFL:
1330 
              switch (sig)
1331 
                {
1332 
                  /* The following according to the glibc
1333 
                     documentation. (The kernel code has non-obvious
1334 
                     execution paths.)  */
1335 
                case TARGET_SIGFPE:
1336 
                case TARGET_SIGILL:
1337 
                case TARGET_SIGSEGV:
1338 
                case TARGET_SIGBUS:
1339 
                case TARGET_SIGABRT:
1340 
                case TARGET_SIGTRAP:
1341 
                case TARGET_SIGSYS:
1342 
 
1343 
                case TARGET_SIGTERM:
1344 
                case TARGET_SIGINT:
1345 
                case TARGET_SIGQUIT:
1346 
                case TARGET_SIGKILL:
1347 
                case TARGET_SIGHUP:
1348 
 
1349 
                case TARGET_SIGALRM:
1350 
                case TARGET_SIGVTALRM:
1351 
                case TARGET_SIGPROF:
1352 
                case TARGET_SIGSTOP:
1353 
 
1354 
                case TARGET_SIGPIPE:
1355 
                case TARGET_SIGLOST:
1356 
                case TARGET_SIGXCPU:
1357 
                case TARGET_SIGXFSZ:
1358 
                case TARGET_SIGUSR1:
1359 
                case TARGET_SIGUSR2:
1360 
                  sim_io_eprintf (CPU_STATE (current_cpu),
1361 
                                  "Exiting pid %d due to signal %d\n",
1362 
                                  pid, sig);
1363 
                  sim_engine_halt (CPU_STATE (current_cpu), current_cpu,
1364 
                                   NULL, pc, sim_stopped,
1365 
                                   sig == TARGET_SIGABRT
1366 
                                   ? SIM_SIGABRT : SIM_SIGILL);
1367 
                  return 0;
1368 
 
1369 
                  /* The default for all other signals is to be ignored.  */
1370 
                default:
1371 
                  return 0;
1372 
                }
1373 
 
1374 
            case TARGET_SIG_IGN:
1375 
              switch (sig)
1376 
                {
1377 
                case TARGET_SIGKILL:
1378 
                case TARGET_SIGSTOP:
1379 
                  /* Can't ignore these signals.  */
1380 
                  sim_io_eprintf (CPU_STATE (current_cpu),
1381 
                                  "Exiting pid %d due to signal %d\n",
1382 
                                  pid, sig);
1383 
                  sim_engine_halt (CPU_STATE (current_cpu), current_cpu,
1384 
                                   NULL, pc, sim_stopped, SIM_SIGILL);
1385 
                  return 0;
1386 
 
1387 
                default:
1388 
                  return 0;
1389 
                }
1390 
              break;
1391 
 
1392 
            default:
1393 
              /* Mark the signal as pending, making schedule () check
1394 
                 closer.  The signal will be handled when the thread is
1395 
                 scheduled and the signal is unblocked.  */
1396 
              current_cpu->thread_data[i].sigdata[sig].pending = 1;
1397 
              current_cpu->thread_data[i].sigpending = 1;
1398 
              return 0;
1399 
            }
1400 
        else
1401 
          {
1402 
            sim_io_eprintf (CPU_STATE (current_cpu),
1403 
                            "Unimplemented signal: %d\n", sig);
1404 
            sim_engine_halt (CPU_STATE (current_cpu), current_cpu, NULL, pc,
1405 
                             sim_stopped, SIM_SIGILL);
1406 
          }
1407 
      }
1408 
 
1409 
  return
1410 
    -cb_host_to_target_errno (STATE_CALLBACK (CPU_STATE (current_cpu)),
1411 
                              ESRCH);
1412 
}
1413 
 
1414 
/* Make the vector and the first item, the main thread.  */
1415 
 
1416 
static void
1417 
make_first_thread (SIM_CPU *current_cpu)
1418 
{
1419 
  SIM_DESC sd = CPU_STATE (current_cpu);
1420 
  current_cpu->thread_data
1421 
    = xcalloc (1,
1422 
               SIM_TARGET_MAX_THREADS
1423 
               * sizeof (current_cpu->thread_data[0]));
1424 
  current_cpu->thread_data[0].cpu_context
1425 
    = (*current_cpu->make_thread_cpu_data) (current_cpu,
1426 
                                            &current_cpu
1427 
                                            ->cpu_data_placeholder);
1428 
  current_cpu->thread_data[0].parent_threadid = -1;
1429 
 
1430 
  /* For good measure.  */
1431 
  if (TARGET_SIG_DFL != 0)
1432 
    abort ();
1433 
}
1434 
 
1435 
/* Handle unknown system calls.  Returns (if it does) the syscall
1436 
   return value.  */
1437 
 
1438 
static USI
1439 
cris_unknown_syscall (SIM_CPU *current_cpu, USI pc, char *s, ...)
1440 
{
1441 
  SIM_DESC sd = CPU_STATE (current_cpu);
1442 
  host_callback *cb = STATE_CALLBACK (sd);
1443 
 
1444 
  if (cris_unknown_syscall_action == CRIS_USYSC_MSG_STOP
1445 
      || cris_unknown_syscall_action == CRIS_USYSC_MSG_ENOSYS)
1446 
    {
1447 
      va_list ap;
1448 
 
1449 
      va_start (ap, s);
1450 
      sim_io_evprintf (sd, s, ap);
1451 
      va_end (ap);
1452 
 
1453 
      if (cris_unknown_syscall_action == CRIS_USYSC_MSG_STOP)
1454 
        sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL);
1455 
    }
1456 
 
1457 
  return -cb_host_to_target_errno (cb, ENOSYS);
1458 
}
1459 
 
1460 
/* Main function: the handler of the "break 13" syscall insn.  */
1461 
 
1462 
USI
1463 
cris_break_13_handler (SIM_CPU *current_cpu, USI callnum, USI arg1,
1464 
                       USI arg2, USI arg3, USI arg4, USI arg5, USI arg6,
1465 
                       USI pc)
1466 
{
1467 
  CB_SYSCALL s;
1468 
  SIM_DESC sd = CPU_STATE (current_cpu);
1469 
  host_callback *cb = STATE_CALLBACK (sd);
1470 
  int retval;
1471 
  int threadno = current_cpu->threadno;
1472 
 
1473 
  current_cpu->syscalls++;
1474 
 
1475 
  CB_SYSCALL_INIT (&s);
1476 
  s.func = callnum;
1477 
  s.arg1 = arg1;
1478 
  s.arg2 = arg2;
1479 
  s.arg3 = arg3;
1480 
 
1481 
  if (callnum == TARGET_SYS_exit_group
1482 
      || (callnum == TARGET_SYS_exit && current_cpu->m1threads == 0))
1483 
    {
1484 
      if (CPU_CRIS_MISC_PROFILE (current_cpu)->flags
1485 
          & FLAG_CRIS_MISC_PROFILE_ALL)
1486 
        dump_statistics (current_cpu);
1487 
      sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1);
1488 
    }
1489 
 
1490 
  s.p1 = (PTR) sd;
1491 
  s.p2 = (PTR) current_cpu;
1492 
  s.read_mem = syscall_read_mem;
1493 
  s.write_mem = syscall_write_mem;
1494 
 
1495 
  current_cpu_for_cb_callback = current_cpu;
1496 
 
1497 
  if (cb_syscall (cb, &s) != CB_RC_OK)
1498 
    {
1499 
      abort ();
1500 
      sim_io_eprintf (sd, "Break 13: invalid %d?  Returned %ld\n", callnum,
1501 
                      s.result);
1502 
      sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL);
1503 
    }
1504 
 
1505 
  retval = s.result == -1 ? -s.errcode : s.result;
1506 
 
1507 
  if (s.errcode != 0 && s.errcode == cb_host_to_target_errno (cb, ENOSYS))
1508 
    {
1509 
      /* If the generic simulator call said ENOSYS, then let's try the
1510 
         ones we know ourselves.
1511 
 
1512 
         The convention is to provide *very limited* functionality on an
1513 
         as-needed basis, only what's covered by the test-suite, tests
1514 
         added when functionality changes and abort with a descriptive
1515 
         message for *everything* else.  Where there's no test-case, we
1516 
         just abort.  */
1517 
      switch (callnum)
1518 
        {
1519 
        case 0:
1520 
          /* It's a pretty safe bet that the "old setup() system call"
1521 
             number will not be re-used; we can't say the same for higher
1522 
             numbers.  We treat this simulator-generated call as "wait
1523 
             forever"; we re-run this insn.  The wait is ended by a
1524 
             callback.  Sanity check that this is the reason we got
1525 
             here. */
1526 
          if (current_cpu->thread_data == NULL
1527 
              || (current_cpu->thread_data[threadno].pipe_write_fd == 0))
1528 
            goto unimplemented_syscall;
1529 
 
1530 
          sim_pc_set (current_cpu, pc);
1531 
          retval = arg1;
1532 
          break;
1533 
 
1534 
        case TARGET_SYS_fcntl64:
1535 
        case TARGET_SYS_fcntl:
1536 
          switch (arg2)
1537 
            {
1538 
            case 1:
1539 
              /* F_GETFD.
1540 
                 Glibc checks stdin, stdout and stderr fd:s for
1541 
                 close-on-exec security sanity.  We just need to provide a
1542 
                 OK return value.  If we really need to have a
1543 
                 close-on-exec flag true, we could just do a real fcntl
1544 
                 here.  */
1545 
              retval = 0;
1546 
              break;
1547 
 
1548 
            case 2:
1549 
              /* F_SETFD.  Just ignore attempts to set the close-on-exec
1550 
                 flag.  */
1551 
              retval = 0;
1552 
              break;
1553 
 
1554 
            case 3:
1555 
              /* F_GETFL.  Check for the special case for open+fdopen.  */
1556 
              if (current_cpu->last_syscall == TARGET_SYS_open
1557 
                  && arg1 == current_cpu->last_open_fd)
1558 
                {
1559 
                  retval = current_cpu->last_open_flags & TARGET_O_ACCMODE;
1560 
                  break;
1561 
                }
1562 
              else if (arg1 == 0)
1563 
                {
1564 
                  /* Because we can't freopen fd:s 0, 1, 2 to mean
1565 
                     something else than stdin, stdout and stderr
1566 
                     (sim/common/syscall.c:cb_syscall special cases fd
1567 
                     0, 1 and 2), we know what flags that we can
1568 
                     sanely return for these fd:s.  */
1569 
                  retval = TARGET_O_RDONLY;
1570 
                  break;
1571 
                }
1572 
              else if (arg1 == 1 || arg1 == 2)
1573 
                {
1574 
                  retval = TARGET_O_WRONLY;
1575 
                  break;
1576 
                }
1577 
              /* FALLTHROUGH */
1578 
            default:
1579 
              /* Nothing else is implemented.  */
1580 
              retval
1581 
                = cris_unknown_syscall (current_cpu, pc,
1582 
                                        "Unimplemented %s syscall "
1583 
                                        "(fd: 0x%lx: cmd: 0x%lx arg: "
1584 
                                        "0x%lx)\n",
1585 
                                        callnum == TARGET_SYS_fcntl
1586 
                                        ? "fcntl" : "fcntl64",
1587 
                                        (unsigned long) (USI) arg1,
1588 
                                        (unsigned long) (USI) arg2,
1589 
                                        (unsigned long) (USI) arg3);
1590 
              break;
1591 
            }
1592 
          break;
1593 
 
1594 
        case TARGET_SYS_uname:
1595 
          {
1596 
            /* Fill in a few constants to appease glibc.  */
1597 
            static char sim_utsname[6][65] =
1598 
            {
1599 
              "Linux",
1600 
              "sim-target",
1601 
              "2.6.27",
1602 
              TARGET_UTSNAME,
1603 
              "cris",           /* Overwritten below.  */
1604 
              "localdomain"
1605 
            };
1606 
 
1607 
            /* Having the hardware type in Linux equal to the bfd
1608 
               printable name is deliberate: if you make config.guess
1609 
               work on your Linux-type system the usual way, it
1610 
               probably will; either the bfd printable_name or the
1611 
               ambiguous arch_name.  */
1612 
            strcpy (sim_utsname[4], STATE_ARCHITECTURE (sd)->printable_name);
1613 
 
1614 
            if ((s.write_mem) (cb, &s, arg1, (const char *) sim_utsname,
1615 
                               sizeof (sim_utsname))
1616 
                != sizeof (sim_utsname))
1617 
              retval = -cb_host_to_target_errno (cb, EFAULT);
1618 
            else
1619 
              retval = 0;
1620 
            break;
1621 
          }
1622 
 
1623 
        case TARGET_SYS_geteuid32:
1624 
          /* We tell the truth with these.  Maybe we shouldn't, but it
1625 
             should match the "stat" information.  */
1626 
          retval = geteuid ();
1627 
          break;
1628 
 
1629 
        case TARGET_SYS_getuid32:
1630 
          retval = getuid ();
1631 
          break;
1632 
 
1633 
        case TARGET_SYS_getegid32:
1634 
          retval = getegid ();
1635 
          break;
1636 
 
1637 
        case TARGET_SYS_getgid32:
1638 
          retval = getgid ();
1639 
          break;
1640 
 
1641 
        case TARGET_SYS_brk:
1642 
          /* Most often, we just return the argument, like the Linux
1643 
             kernel.  */
1644 
          retval = arg1;
1645 
 
1646 
          if (arg1 == 0)
1647 
            retval = current_cpu->endbrk;
1648 
          else if (arg1 <= current_cpu->endmem)
1649 
            current_cpu->endbrk = arg1;
1650 
          else
1651 
            {
1652 
              USI new_end = (arg1 + 8191) & ~8191;
1653 
 
1654 
              /* If the simulator wants to brk more than a certain very
1655 
                 large amount, something is wrong.  FIXME: Return an error
1656 
                 or abort?  Have command-line selectable?  */
1657 
              if (new_end - current_cpu->endmem > SIM_MAX_ALLOC_CHUNK)
1658 
                {
1659 
                  current_cpu->endbrk = current_cpu->endmem;
1660 
                  retval = current_cpu->endmem;
1661 
                  break;
1662 
                }
1663 
 
1664 
              sim_core_attach (sd, NULL, 0, access_read_write_exec, 0,
1665 
                               current_cpu->endmem,
1666 
                               new_end - current_cpu->endmem,
1667 
                               0, NULL, NULL);
1668 
              current_cpu->endbrk = arg1;
1669 
              current_cpu->endmem = new_end;
1670 
            }
1671 
          break;
1672 
 
1673 
        case TARGET_SYS_getpid:
1674 
          /* Correct until CLONE_THREAD is implemented.  */
1675 
          retval = current_cpu->thread_data == NULL
1676 
            ? TARGET_PID
1677 
            : TARGET_PID + current_cpu->thread_data[threadno].threadid;
1678 
          break;
1679 
 
1680 
        case TARGET_SYS_getppid:
1681 
          /* Correct until CLONE_THREAD is implemented.  */
1682 
          retval = current_cpu->thread_data == NULL
1683 
            ? TARGET_PID - 1
1684 
            : (TARGET_PID
1685 
               + current_cpu->thread_data[threadno].parent_threadid);
1686 
          break;
1687 
 
1688 
        case TARGET_SYS_mmap2:
1689 
          {
1690 
            USI addr = arg1;
1691 
            USI len = arg2;
1692 
            USI prot = arg3;
1693 
            USI flags = arg4;
1694 
            USI fd = arg5;
1695 
            USI pgoff = arg6;
1696 
 
1697 
            /* At 2.6.27, Linux (many (all?) ports, in the mmap2 syscalls)
1698 
               still masked away this bit, so let's just ignore
1699 
               it.  */
1700 
            flags &= ~TARGET_MAP_DENYWRITE;
1701 
 
1702 
            /* If the simulator wants to mmap more than the very large
1703 
               limit, something is wrong.  FIXME: Return an error or
1704 
               abort?  Have command-line selectable?  */
1705 
            if (len > SIM_MAX_ALLOC_CHUNK)
1706 
              {
1707 
                retval = -cb_host_to_target_errno (cb, ENOMEM);
1708 
                break;
1709 
              }
1710 
 
1711 
            if ((prot != (TARGET_PROT_READ | TARGET_PROT_WRITE)
1712 
                 && (prot
1713 
                     != (TARGET_PROT_READ
1714 
                         | TARGET_PROT_WRITE
1715 
                         | TARGET_PROT_EXEC))
1716 
                 && (prot != (TARGET_PROT_READ | TARGET_PROT_EXEC))
1717 
                 && prot != TARGET_PROT_READ)
1718 
                || (flags != (TARGET_MAP_ANONYMOUS | TARGET_MAP_PRIVATE)
1719 
                    && flags != TARGET_MAP_PRIVATE
1720 
                    && flags != (TARGET_MAP_ANONYMOUS
1721 
                                 | TARGET_MAP_PRIVATE | TARGET_MAP_FIXED)
1722 
                    && flags != (TARGET_MAP_PRIVATE | TARGET_MAP_FIXED)
1723 
                    && flags != TARGET_MAP_SHARED)
1724 
                || (fd != (USI) -1
1725 
                    && prot != TARGET_PROT_READ
1726 
                    && prot != (TARGET_PROT_READ | TARGET_PROT_EXEC)
1727 
                    && prot != (TARGET_PROT_READ | TARGET_PROT_WRITE))
1728 
                || (fd == (USI) -1 && pgoff != 0)
1729 
                || (fd != (USI) -1 && (flags & TARGET_MAP_ANONYMOUS)))
1730 
              {
1731 
                retval
1732 
                  = cris_unknown_syscall (current_cpu, pc,
1733 
                                                 "Unimplemented mmap2 call "
1734 
                                                 "(0x%lx, 0x%lx, 0x%lx, "
1735 
                                                 "0x%lx, 0x%lx, 0x%lx)\n",
1736 
                                                 (unsigned long) arg1,
1737 
                                                 (unsigned long) arg2,
1738 
                                                 (unsigned long) arg3,
1739 
                                                 (unsigned long) arg4,
1740 
                                                 (unsigned long) arg5,
1741 
                                                 (unsigned long) arg6);
1742 
                break;
1743 
              }
1744 
            else if (fd != (USI) -1)
1745 
              {
1746 
                /* Map a file.  */
1747 
 
1748 
                USI newaddr;
1749 
                USI pos;
1750 
 
1751 
                /* A non-aligned argument is allowed for files.  */
1752 
                USI newlen = (len + 8191) & ~8191;
1753 
 
1754 
                /* We only support read, read|exec, and read|write,
1755 
                   which we should already have checked.  Check again
1756 
                   anyway.  */
1757 
                if (prot != TARGET_PROT_READ
1758 
                    && prot != (TARGET_PROT_READ | TARGET_PROT_EXEC)
1759 
                    && prot != (TARGET_PROT_READ | TARGET_PROT_WRITE))
1760 
                  abort ();
1761 
 
1762 
                if (flags & TARGET_MAP_FIXED)
1763 
                  unmap_pages (sd, &current_cpu->highest_mmapped_page,
1764 
                               addr, newlen);
1765 
                else if (is_mapped (sd, &current_cpu->highest_mmapped_page,
1766 
                                    addr, newlen))
1767 
                  addr = 0;
1768 
 
1769 
                newaddr
1770 
                  = create_map (sd, &current_cpu->highest_mmapped_page,
1771 
                                addr != 0 || (flags & TARGET_MAP_FIXED)
1772 
                                ? addr : -1,
1773 
                                newlen);
1774 
 
1775 
                if (newaddr >= (USI) -8191)
1776 
                  {
1777 
                    abort ();
1778 
                    retval = -cb_host_to_target_errno (cb, -(SI) newaddr);
1779 
                    break;
1780 
                  }
1781 
 
1782 
                /* We were asked for MAP_FIXED, but couldn't.  */
1783 
                if ((flags & TARGET_MAP_FIXED) && newaddr != addr)
1784 
                  {
1785 
                    abort ();
1786 
                    unmap_pages (sd, &current_cpu->highest_mmapped_page,
1787 
                                 newaddr, newlen);
1788 
                    retval = -cb_host_to_target_errno (cb, EINVAL);
1789 
                    break;
1790 
                  }
1791 
 
1792 
                /* Find the current position in the file.  */
1793 
                s.func = TARGET_SYS_lseek;
1794 
                s.arg1 = fd;
1795 
                s.arg2 = 0;
1796 
                s.arg3 = SEEK_CUR;
1797 
                if (cb_syscall (cb, &s) != CB_RC_OK)
1798 
                  abort ();
1799 
                pos = s.result;
1800 
 
1801 
                if (s.result < 0)
1802 
                  abort ();
1803 
 
1804 
                /* Move to the correct offset in the file.  */
1805 
                s.func = TARGET_SYS_lseek;
1806 
                s.arg1 = fd;
1807 
                s.arg2 = pgoff*8192;
1808 
                s.arg3 = SEEK_SET;
1809 
                if (cb_syscall (cb, &s) != CB_RC_OK)
1810 
                  abort ();
1811 
 
1812 
                if (s.result < 0)
1813 
                  abort ();
1814 
 
1815 
                /* Use the standard read callback to read in "len"
1816 
                   bytes.  */
1817 
                s.func = TARGET_SYS_read;
1818 
                s.arg1 = fd;
1819 
                s.arg2 = newaddr;
1820 
                s.arg3 = len;
1821 
                if (cb_syscall (cb, &s) != CB_RC_OK)
1822 
                  abort ();
1823 
 
1824 
                /* If the result is a page or more lesser than what
1825 
                   was requested, something went wrong.  */
1826 
                if (len >= 8192 && (USI) s.result <= len - 8192)
1827 
                  abort ();
1828 
 
1829 
                /* After reading, we need to go back to the previous
1830 
                   position in the file.  */
1831 
                s.func = TARGET_SYS_lseek;
1832 
                s.arg1 = fd;
1833 
                s.arg2 = pos;
1834 
                s.arg3 = SEEK_SET;
1835 
                if (cb_syscall (cb, &s) != CB_RC_OK)
1836 
                  abort ();
1837 
                if (pos != (USI) s.result)
1838 
                  abort ();
1839 
 
1840 
                retval = newaddr;
1841 
              }
1842 
            else
1843 
              {
1844 
                USI newlen = (len + 8191) & ~8191;
1845 
                USI newaddr;
1846 
 
1847 
                if (flags & TARGET_MAP_FIXED)
1848 
                  unmap_pages (sd, &current_cpu->highest_mmapped_page,
1849 
                               addr, newlen);
1850 
                else if (is_mapped (sd, &current_cpu->highest_mmapped_page,
1851 
                                    addr, newlen))
1852 
                  addr = 0;
1853 
 
1854 
                newaddr = create_map (sd, &current_cpu->highest_mmapped_page,
1855 
                                      addr != 0 || (flags & TARGET_MAP_FIXED)
1856 
                                      ? addr : -1,
1857 
                                      newlen);
1858 
 
1859 
                if (newaddr >= (USI) -8191)
1860 
                  retval = -cb_host_to_target_errno (cb, -(SI) newaddr);
1861 
                else
1862 
                  retval = newaddr;
1863 
 
1864 
                if ((flags & TARGET_MAP_FIXED) && newaddr != addr)
1865 
                  {
1866 
                    abort ();
1867 
                    unmap_pages (sd, &current_cpu->highest_mmapped_page,
1868 
                                 newaddr, newlen);
1869 
                    retval = -cb_host_to_target_errno (cb, EINVAL);
1870 
                    break;
1871 
                  }
1872 
              }
1873 
            break;
1874 
          }
1875 
 
1876 
        case TARGET_SYS_mprotect:
1877 
          {
1878 
            /* We only cover the case of linuxthreads mprotecting out
1879 
               its stack guard page and of dynamic loading mprotecting
1880 
               away the data (for some reason the whole library, then
1881 
               mprotects away the data part and mmap-FIX:es it again.  */
1882 
            USI addr = arg1;
1883 
            USI len = arg2;
1884 
            USI prot = arg3;
1885 
 
1886 
            if (prot != TARGET_PROT_NONE
1887 
                || !is_mapped_only (sd, &current_cpu->highest_mmapped_page,
1888 
                                    addr, (len + 8191) & ~8191))
1889 
              {
1890 
                retval
1891 
                  = cris_unknown_syscall (current_cpu, pc,
1892 
                                          "Unimplemented mprotect call "
1893 
                                          "(0x%lx, 0x%lx, 0x%lx)\n",
1894 
                                          (unsigned long) arg1,
1895 
                                          (unsigned long) arg2,
1896 
                                          (unsigned long) arg3);
1897 
                break;
1898 
              }
1899 
 
1900 
            /* Just ignore this.  We could make this equal to munmap,
1901 
               but then we'd have to make sure no anon mmaps gets this
1902 
               address before a subsequent MAP_FIXED mmap intended to
1903 
               override it.  */
1904 
            retval = 0;
1905 
            break;
1906 
          }
1907 
 
1908 
        case TARGET_SYS_ioctl:
1909 
          {
1910 
            /* We support only a very limited functionality: checking
1911 
               stdout with TCGETS to perform the isatty function.  The
1912 
               TCGETS ioctl isn't actually performed or the result used by
1913 
               an isatty () caller in a "hello, world" program; only the
1914 
               return value is then used.  Maybe we shouldn't care about
1915 
               the environment of the simulator regarding isatty, but
1916 
               that's been working before, in the xsim simulator.  */
1917 
            if (arg2 == TARGET_TCGETS && arg1 == 1)
1918 
              retval = isatty (1) ? 0 : cb_host_to_target_errno (cb, EINVAL);
1919 
            else
1920 
              retval = -cb_host_to_target_errno (cb, EINVAL);
1921 
            break;
1922 
          }
1923 
 
1924 
        case TARGET_SYS_munmap:
1925 
          {
1926 
            USI addr = arg1;
1927 
            USI len = arg2;
1928 
            USI result
1929 
              = unmap_pages (sd, &current_cpu->highest_mmapped_page, addr,
1930 
                             len);
1931 
            retval = result != 0 ? -cb_host_to_target_errno (cb, result) : 0;
1932 
            break;
1933 
          }
1934 
 
1935 
        case TARGET_SYS_wait4:
1936 
          {
1937 
            int i;
1938 
            USI pid = arg1;
1939 
            USI saddr = arg2;
1940 
            USI options = arg3;
1941 
            USI rusagep = arg4;
1942 
 
1943 
            /* FIXME: We're not properly implementing __WCLONE, and we
1944 
               don't really need the special casing so we might as well
1945 
               make this general.  */
1946 
            if ((!(pid == (USI) -1
1947 
                   && options == (TARGET___WCLONE | TARGET_WNOHANG)
1948 
                   && saddr != 0)
1949 
                 && !(pid > 0
1950 
                      && (options == TARGET___WCLONE
1951 
                          || options == TARGET___WALL)))
1952 
                || rusagep != 0
1953 
                || current_cpu->thread_data == NULL)
1954 
              {
1955 
                retval
1956 
                  = cris_unknown_syscall (current_cpu, pc,
1957 
                                          "Unimplemented wait4 call "
1958 
                                          "(0x%lx, 0x%lx, 0x%lx, 0x%lx)\n",
1959 
                                          (unsigned long) arg1,
1960 
                                          (unsigned long) arg2,
1961 
                                          (unsigned long) arg3,
1962 
                                          (unsigned long) arg4);
1963 
                break;
1964 
              }
1965 
 
1966 
            if (pid == (USI) -1)
1967 
              for (i = 1; i < SIM_TARGET_MAX_THREADS; i++)
1968 
                {
1969 
                  if (current_cpu->thread_data[threadno].threadid
1970 
                      == current_cpu->thread_data[i].parent_threadid
1971 
                      && current_cpu->thread_data[i].threadid != 0
1972 
                      && current_cpu->thread_data[i].cpu_context == NULL)
1973 
                    {
1974 
                      /* A zombied child.  Get the exit value and clear the
1975 
                         zombied entry so it will be reused.  */
1976 
                      sim_core_write_unaligned_4 (current_cpu, pc, 0, saddr,
1977 
                                                  current_cpu
1978 
                                                  ->thread_data[i].exitval);
1979 
                      retval
1980 
                        = current_cpu->thread_data[i].threadid + TARGET_PID;
1981 
                      memset (&current_cpu->thread_data[i], 0,
1982 
                              sizeof (current_cpu->thread_data[i]));
1983 
                      goto outer_break;
1984 
                    }
1985 
                }
1986 
            else
1987 
              {
1988 
                /* We're waiting for a specific PID.  If we don't find
1989 
                   it zombied on this run, rerun the syscall.  */
1990 
                for (i = 1; i < SIM_TARGET_MAX_THREADS; i++)
1991 
                  if (pid == current_cpu->thread_data[i].threadid + TARGET_PID
1992 
                      && current_cpu->thread_data[i].cpu_context == NULL)
1993 
                    {
1994 
                      if (saddr != 0)
1995 
                        /* Get the exit value if the caller wants it.  */
1996 
                        sim_core_write_unaligned_4 (current_cpu, pc, 0,
1997 
                                                    saddr,
1998 
                                                    current_cpu
1999 
                                                    ->thread_data[i]
2000 
                                                    .exitval);
2001 
 
2002 
                      retval
2003 
                        = current_cpu->thread_data[i].threadid + TARGET_PID;
2004 
                      memset (&current_cpu->thread_data[i], 0,
2005 
                              sizeof (current_cpu->thread_data[i]));
2006 
 
2007 
                      goto outer_break;
2008 
                    }
2009 
 
2010 
                sim_pc_set (current_cpu, pc);
2011 
              }
2012 
 
2013 
            retval = -cb_host_to_target_errno (cb, ECHILD);
2014 
          outer_break:
2015 
            break;
2016 
          }
2017 
 
2018 
        case TARGET_SYS_rt_sigaction:
2019 
          {
2020 
            USI signum = arg1;
2021 
            USI old_sa = arg3;
2022 
            USI new_sa = arg2;
2023 
 
2024 
            /* The kernel says:
2025 
               struct sigaction {
2026 
                        __sighandler_t sa_handler;
2027 
                        unsigned long sa_flags;
2028 
                        void (*sa_restorer)(void);
2029 
                        sigset_t sa_mask;
2030 
               }; */
2031 
 
2032 
            if (old_sa != 0)
2033 
              {
2034 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, old_sa + 0,
2035 
                                            current_cpu->sighandler[signum]);
2036 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 4, 0);
2037 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 8, 0);
2038 
 
2039 
                /* We'll assume _NSIG_WORDS is 2 for the kernel.  */
2040 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 12, 0);
2041 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, arg3 + 16, 0);
2042 
              }
2043 
            if (new_sa != 0)
2044 
              {
2045 
                USI target_sa_handler
2046 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa);
2047 
                USI target_sa_flags
2048 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 4);
2049 
                USI target_sa_restorer
2050 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 8);
2051 
                USI target_sa_mask_low
2052 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 12);
2053 
                USI target_sa_mask_high
2054 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, new_sa + 16);
2055 
 
2056 
                /* We won't interrupt a syscall so we won't restart it,
2057 
                   but a signal(2) call ends up syscalling rt_sigaction
2058 
                   with this flag, so we have to handle it.  The
2059 
                   sa_restorer field contains garbage when not
2060 
                   TARGET_SA_RESTORER, so don't look at it.  For the
2061 
                   time being, we don't nest sighandlers, so we
2062 
                   ignore the sa_mask, which simplifies things.  */
2063 
                if ((target_sa_flags != 0
2064 
                     && target_sa_flags != TARGET_SA_RESTART
2065 
                     && target_sa_flags != (TARGET_SA_RESTART|TARGET_SA_SIGINFO))
2066 
                    || target_sa_handler == 0)
2067 
                  {
2068 
                    retval
2069 
                      = cris_unknown_syscall (current_cpu, pc,
2070 
                                              "Unimplemented rt_sigaction "
2071 
                                              "syscall "
2072 
                                              "(0x%lx, 0x%lx: "
2073 
                                              "[0x%x, 0x%x, 0x%x, "
2074 
                                              "{0x%x, 0x%x}], 0x%lx)\n",
2075 
                                              (unsigned long) arg1,
2076 
                                              (unsigned long) arg2,
2077 
                                              target_sa_handler,
2078 
                                              target_sa_flags,
2079 
                                              target_sa_restorer,
2080 
                                              target_sa_mask_low,
2081 
                                              target_sa_mask_high,
2082 
                                              (unsigned long) arg3);
2083 
                    break;
2084 
                  }
2085 
 
2086 
                current_cpu->sighandler[signum] = target_sa_handler;
2087 
 
2088 
                /* Because we may have unblocked signals, one may now be
2089 
                   pending, if there are threads, that is.  */
2090 
                if (current_cpu->thread_data)
2091 
                  current_cpu->thread_data[threadno].sigpending = 1;
2092 
              }
2093 
            retval = 0;
2094 
            break;
2095 
          }
2096 
 
2097 
        case TARGET_SYS_mremap:
2098 
          {
2099 
            USI addr = arg1;
2100 
            USI old_len = arg2;
2101 
            USI new_len = arg3;
2102 
            USI flags = arg4;
2103 
            USI new_addr = arg5;
2104 
            USI mapped_addr;
2105 
 
2106 
            if (new_len == old_len)
2107 
              /* The program and/or library is possibly confused but
2108 
                 this is a valid call.  Happens with ipps-1.40 on file
2109 
                 svs_all.  */
2110 
              retval = addr;
2111 
            else if (new_len < old_len)
2112 
              {
2113 
                /* Shrinking is easy.  */
2114 
                if (unmap_pages (sd, &current_cpu->highest_mmapped_page,
2115 
                                 addr + new_len, old_len - new_len) != 0)
2116 
                  retval = -cb_host_to_target_errno (cb, EINVAL);
2117 
                else
2118 
                  retval = addr;
2119 
              }
2120 
            else if (! is_mapped (sd, &current_cpu->highest_mmapped_page,
2121 
                                  addr + old_len, new_len - old_len))
2122 
              {
2123 
                /* If the extension isn't mapped, we can just add it.  */
2124 
                mapped_addr
2125 
                  = create_map (sd, &current_cpu->highest_mmapped_page,
2126 
                                addr + old_len, new_len - old_len);
2127 
 
2128 
                if (mapped_addr > (USI) -8192)
2129 
                  retval = -cb_host_to_target_errno (cb, -(SI) mapped_addr);
2130 
                else
2131 
                  retval = addr;
2132 
              }
2133 
            else if (flags & TARGET_MREMAP_MAYMOVE)
2134 
              {
2135 
                /* Create a whole new map and copy the contents
2136 
                   block-by-block there.  We ignore the new_addr argument
2137 
                   for now.  */
2138 
                char buf[8192];
2139 
                USI prev_addr = addr;
2140 
                USI prev_len = old_len;
2141 
 
2142 
                mapped_addr
2143 
                  = create_map (sd, &current_cpu->highest_mmapped_page,
2144 
                                -1, new_len);
2145 
 
2146 
                if (mapped_addr > (USI) -8192)
2147 
                  {
2148 
                    retval = -cb_host_to_target_errno (cb, -(SI) new_addr);
2149 
                    break;
2150 
                  }
2151 
 
2152 
                retval = mapped_addr;
2153 
 
2154 
                for (; old_len > 0;
2155 
                     old_len -= 8192, mapped_addr += 8192, addr += 8192)
2156 
                  {
2157 
                    if (sim_core_read_buffer (sd, current_cpu, read_map, buf,
2158 
                                              addr, 8192) != 8192
2159 
                        || sim_core_write_buffer (sd, current_cpu, 0, buf,
2160 
                                                  mapped_addr, 8192) != 8192)
2161 
                      abort ();
2162 
                  }
2163 
 
2164 
                if (unmap_pages (sd, &current_cpu->highest_mmapped_page,
2165 
                                 prev_addr, prev_len) != 0)
2166 
                  abort ();
2167 
              }
2168 
            else
2169 
              retval = -cb_host_to_target_errno (cb, -ENOMEM);
2170 
            break;
2171 
          }
2172 
 
2173 
        case TARGET_SYS_poll:
2174 
          {
2175 
            int npollfds = arg2;
2176 
            int timeout = arg3;
2177 
            SI ufds = arg1;
2178 
            SI fd = -1;
2179 
            HI events = -1;
2180 
            HI revents = 0;
2181 
            struct stat buf;
2182 
            int i;
2183 
 
2184 
            /* The kernel says:
2185 
                struct pollfd {
2186 
                     int fd;
2187 
                     short events;
2188 
                     short revents;
2189 
                }; */
2190 
 
2191 
            /* Check that this is the expected poll call from
2192 
               linuxthreads/manager.c; we don't support anything else.
2193 
               Remember, fd == 0 isn't supported.  */
2194 
            if (npollfds != 1
2195 
                || ((fd = sim_core_read_unaligned_4 (current_cpu, pc,
2196 
                                                     0, ufds)) <= 0)
2197 
                || ((events = sim_core_read_unaligned_2 (current_cpu, pc,
2198 
                                                         0, ufds + 4))
2199 
                    != TARGET_POLLIN)
2200 
                || ((cb->fstat) (cb, fd, &buf) != 0
2201 
                    || (buf.st_mode & S_IFIFO) == 0)
2202 
                || current_cpu->thread_data == NULL)
2203 
              {
2204 
                retval
2205 
                  = cris_unknown_syscall (current_cpu, pc,
2206 
                                          "Unimplemented poll syscall "
2207 
                                          "(0x%lx: [0x%x, 0x%x, x], "
2208 
                                          "0x%lx, 0x%lx)\n",
2209 
                                          (unsigned long) arg1, fd, events,
2210 
                                          (unsigned long) arg2,
2211 
                                          (unsigned long) arg3);
2212 
                break;
2213 
              }
2214 
 
2215 
            retval = 0;
2216 
 
2217 
            /* Iterate over threads; find a marker that a writer is
2218 
               sleeping, waiting for a reader.  */
2219 
            for (i = 0; i < SIM_TARGET_MAX_THREADS; i++)
2220 
              if (current_cpu->thread_data[i].cpu_context != NULL
2221 
                  && current_cpu->thread_data[i].pipe_read_fd == fd)
2222 
                {
2223 
                  revents = TARGET_POLLIN;
2224 
                  retval = 1;
2225 
                  break;
2226 
                }
2227 
 
2228 
            /* Timeout decreases with whatever time passed between the
2229 
               last syscall and this.  That's not exactly right for the
2230 
               first call, but it's close enough that it isn't
2231 
               worthwhile to complicate matters by making that a special
2232 
               case.  */
2233 
            timeout
2234 
              -= (TARGET_TIME_MS (current_cpu)
2235 
                  - (current_cpu->thread_data[threadno].last_execution));
2236 
 
2237 
            /* Arrange to repeat this syscall until timeout or event,
2238 
               decreasing timeout at each iteration.  */
2239 
            if (timeout > 0 && revents == 0)
2240 
              {
2241 
                bfd_byte timeout_buf[4];
2242 
 
2243 
                bfd_putl32 (timeout, timeout_buf);
2244 
                (*CPU_REG_STORE (current_cpu)) (current_cpu,
2245 
                                                H_GR_R12, timeout_buf, 4);
2246 
                sim_pc_set (current_cpu, pc);
2247 
                retval = arg1;
2248 
                break;
2249 
              }
2250 
 
2251 
            sim_core_write_unaligned_2 (current_cpu, pc, 0, ufds + 4 + 2,
2252 
                                        revents);
2253 
            break;
2254 
          }
2255 
 
2256 
        case TARGET_SYS_time:
2257 
          {
2258 
            retval = (int) (*cb->time) (cb, 0L);
2259 
 
2260 
            /* At time of this writing, CB_SYSCALL_time doesn't do the
2261 
               part of setting *arg1 to the return value.  */
2262 
            if (arg1)
2263 
              sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1, retval);
2264 
            break;
2265 
          }
2266 
 
2267 
        case TARGET_SYS_gettimeofday:
2268 
          if (arg1 != 0)
2269 
            {
2270 
              USI ts = TARGET_TIME (current_cpu);
2271 
              USI tms = TARGET_TIME_MS (current_cpu);
2272 
 
2273 
              /* First dword is seconds since TARGET_EPOCH.  */
2274 
              sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1, ts);
2275 
 
2276 
              /* Second dword is microseconds.  */
2277 
              sim_core_write_unaligned_4 (current_cpu, pc, 0, arg1 + 4,
2278 
                                          (tms % 1000) * 1000);
2279 
            }
2280 
          if (arg2 != 0)
2281 
            {
2282 
              /* Time-zone info is always cleared.  */
2283 
              sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2, 0);
2284 
              sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2 + 4, 0);
2285 
            }
2286 
          retval = 0;
2287 
          break;
2288 
 
2289 
        case TARGET_SYS_llseek:
2290 
          {
2291 
            /* If it fits, tweak parameters to fit the "generic" 32-bit
2292 
               lseek and use that.  */
2293 
            SI fd = arg1;
2294 
            SI offs_hi = arg2;
2295 
            SI offs_lo = arg3;
2296 
            SI resultp = arg4;
2297 
            SI whence = arg5;
2298 
            retval = 0;
2299 
 
2300 
            if (!((offs_hi == 0 && offs_lo >= 0)
2301 
                  || (offs_hi == -1 &&  offs_lo < 0)))
2302 
              {
2303 
                retval
2304 
                  = cris_unknown_syscall (current_cpu, pc,
2305 
                                          "Unimplemented llseek offset,"
2306 
                                          " fd %d: 0x%x:0x%x\n",
2307 
                                          fd, (unsigned) arg2,
2308 
                                          (unsigned) arg3);
2309 
                break;
2310 
              }
2311 
 
2312 
            s.func = TARGET_SYS_lseek;
2313 
            s.arg2 = offs_lo;
2314 
            s.arg3 = whence;
2315 
            if (cb_syscall (cb, &s) != CB_RC_OK)
2316 
              {
2317 
                sim_io_eprintf (sd, "Break 13: invalid %d?  Returned %ld\n", callnum,
2318 
                                s.result);
2319 
                sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL);
2320 
              }
2321 
            if (s.result < 0)
2322 
              retval = -s.errcode;
2323 
            else
2324 
              {
2325 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, resultp,
2326 
                                            s.result);
2327 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, resultp + 4,
2328 
                                            s.result < 0 ? -1 : 0);
2329 
              }
2330 
            break;
2331 
          }
2332 
 
2333 
          /* ssize_t writev(int fd, const struct iovec *iov, int iovcnt);
2334 
              where:
2335 
             struct iovec {
2336 
               void  *iov_base;    Starting address
2337 
               size_t iov_len;     Number of bytes to transfer
2338 
             }; */
2339 
        case TARGET_SYS_writev:
2340 
          {
2341 
            SI fd = arg1;
2342 
            SI iov = arg2;
2343 
            SI iovcnt = arg3;
2344 
            SI retcnt = 0;
2345 
            int i;
2346 
 
2347 
            /* We'll ignore strict error-handling and just do multiple write calls.  */
2348 
            for (i = 0; i < iovcnt; i++)
2349 
              {
2350 
                int sysret;
2351 
                USI iov_base
2352 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0,
2353 
                                               iov + 8*i);
2354 
                USI iov_len
2355 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0,
2356 
                                               iov + 8*i + 4);
2357 
 
2358 
                s.func = TARGET_SYS_write;
2359 
                s.arg1 = fd;
2360 
                s.arg2 = iov_base;
2361 
                s.arg3 = iov_len;
2362 
 
2363 
                if (cb_syscall (cb, &s) != CB_RC_OK)
2364 
                  abort ();
2365 
                sysret = s.result == -1 ? -s.errcode : s.result;
2366 
 
2367 
                if (sysret != iov_len)
2368 
                  {
2369 
                    if (i != 0)
2370 
                      abort ();
2371 
                    retcnt = sysret;
2372 
                    break;
2373 
                  }
2374 
 
2375 
                retcnt += iov_len;
2376 
              }
2377 
 
2378 
            retval = retcnt;
2379 
          }
2380 
          break;
2381 
 
2382 
        /* This one does have a generic callback function, but at the time
2383 
           of this writing, cb_syscall does not have code for it, and we
2384 
           need target-specific code for the threads implementation
2385 
           anyway.  */
2386 
        case TARGET_SYS_kill:
2387 
          {
2388 
            USI pid = arg1;
2389 
            USI sig = arg2;
2390 
 
2391 
            retval = 0;
2392 
 
2393 
            /* At kill(2), glibc sets signal masks such that the thread
2394 
               machinery is initialized.  Still, there is and was only
2395 
               one thread.  */
2396 
            if (current_cpu->max_threadid == 0)
2397 
              {
2398 
                if (pid != TARGET_PID)
2399 
                  {
2400 
                    retval = -cb_host_to_target_errno (cb, EPERM);
2401 
                    break;
2402 
                  }
2403 
 
2404 
                /* FIXME: Signal infrastructure (target-to-sim mapping).  */
2405 
                if (sig == TARGET_SIGABRT)
2406 
                  /* A call "abort ()", i.e. "kill (getpid(), SIGABRT)" is
2407 
                     the end-point for failing GCC test-cases.  */
2408 
                  sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped,
2409 
                                   SIM_SIGABRT);
2410 
                else
2411 
                  {
2412 
                    sim_io_eprintf (sd, "Unimplemented signal: %d\n", sig);
2413 
                    sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped,
2414 
                                     SIM_SIGILL);
2415 
                  }
2416 
 
2417 
                /* This will not be reached.  */
2418 
                abort ();
2419 
              }
2420 
            else
2421 
              retval = deliver_signal (current_cpu, sig, pid);
2422 
            break;
2423 
          }
2424 
 
2425 
        case TARGET_SYS_rt_sigprocmask:
2426 
          {
2427 
            int i;
2428 
            USI how = arg1;
2429 
            USI newsetp = arg2;
2430 
            USI oldsetp = arg3;
2431 
 
2432 
            if (how != TARGET_SIG_BLOCK
2433 
                && how != TARGET_SIG_SETMASK
2434 
                && how != TARGET_SIG_UNBLOCK)
2435 
              {
2436 
                retval
2437 
                  = cris_unknown_syscall (current_cpu, pc,
2438 
                                          "Unimplemented rt_sigprocmask "
2439 
                                          "syscall (0x%x, 0x%x, 0x%x)\n",
2440 
                                          arg1, arg2, arg3);
2441 
                break;
2442 
              }
2443 
 
2444 
            if (newsetp)
2445 
              {
2446 
                USI set_low
2447 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0,
2448 
                                               newsetp);
2449 
                USI set_high
2450 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0,
2451 
                                               newsetp + 4);
2452 
 
2453 
                /* The sigmask is kept in the per-thread data, so we may
2454 
                   need to create the first one.  */
2455 
                if (current_cpu->thread_data == NULL)
2456 
                  make_first_thread (current_cpu);
2457 
 
2458 
                if (how == TARGET_SIG_SETMASK)
2459 
                  for (i = 0; i < 64; i++)
2460 
                    current_cpu->thread_data[threadno].sigdata[i].blocked = 0;
2461 
 
2462 
                for (i = 0; i < 32; i++)
2463 
                  if ((set_low & (1 << i)))
2464 
                    current_cpu->thread_data[threadno].sigdata[i + 1].blocked
2465 
                      = (how != TARGET_SIG_UNBLOCK);
2466 
 
2467 
                for (i = 0; i < 31; i++)
2468 
                  if ((set_high & (1 << i)))
2469 
                    current_cpu->thread_data[threadno].sigdata[i + 33].blocked
2470 
                      = (how != TARGET_SIG_UNBLOCK);
2471 
 
2472 
                /* The mask changed, so a signal may be unblocked for
2473 
                   execution.  */
2474 
                current_cpu->thread_data[threadno].sigpending = 1;
2475 
              }
2476 
 
2477 
            if (oldsetp != 0)
2478 
              {
2479 
                USI set_low = 0;
2480 
                USI set_high = 0;
2481 
 
2482 
                for (i = 0; i < 32; i++)
2483 
                  if (current_cpu->thread_data[threadno]
2484 
                      .sigdata[i + 1].blocked)
2485 
                    set_low |= 1 << i;
2486 
                for (i = 0; i < 31; i++)
2487 
                  if (current_cpu->thread_data[threadno]
2488 
                      .sigdata[i + 33].blocked)
2489 
                    set_high |= 1 << i;
2490 
 
2491 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, oldsetp + 0, set_low);
2492 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, oldsetp + 4, set_high);
2493 
              }
2494 
 
2495 
            retval = 0;
2496 
            break;
2497 
          }
2498 
 
2499 
        case TARGET_SYS_sigreturn:
2500 
          {
2501 
            int i;
2502 
            bfd_byte regbuf[4];
2503 
            int was_sigsuspended;
2504 
 
2505 
            if (current_cpu->thread_data == NULL
2506 
                /* The CPU context is saved with the simulator data, not
2507 
                   on the stack as in the real world.  */
2508 
                || (current_cpu->thread_data[threadno].cpu_context_atsignal
2509 
                    == NULL))
2510 
              {
2511 
                retval
2512 
                  = cris_unknown_syscall (current_cpu, pc,
2513 
                                          "Invalid sigreturn syscall: "
2514 
                                          "no signal handler active "
2515 
                                          "(0x%lx, 0x%lx, 0x%lx, 0x%lx, "
2516 
                                          "0x%lx, 0x%lx)\n",
2517 
                                          (unsigned long) arg1,
2518 
                                          (unsigned long) arg2,
2519 
                                          (unsigned long) arg3,
2520 
                                          (unsigned long) arg4,
2521 
                                          (unsigned long) arg5,
2522 
                                          (unsigned long) arg6);
2523 
                break;
2524 
              }
2525 
 
2526 
            was_sigsuspended
2527 
              = current_cpu->thread_data[threadno].sigsuspended;
2528 
 
2529 
            /* Restore the sigmask, either from the stack copy made when
2530 
               the sighandler was called, or from the saved state
2531 
               specifically for sigsuspend(2).  */
2532 
            if (was_sigsuspended)
2533 
              {
2534 
                current_cpu->thread_data[threadno].sigsuspended = 0;
2535 
                for (i = 0; i < 64; i++)
2536 
                  current_cpu->thread_data[threadno].sigdata[i].blocked
2537 
                    = current_cpu->thread_data[threadno]
2538 
                    .sigdata[i].blocked_suspendsave;
2539 
              }
2540 
            else
2541 
              {
2542 
                USI sp;
2543 
                USI set_low;
2544 
                USI set_high;
2545 
 
2546 
                (*CPU_REG_FETCH (current_cpu)) (current_cpu,
2547 
                                            H_GR_SP, regbuf, 4);
2548 
                sp = bfd_getl32 (regbuf);
2549 
                set_low
2550 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, sp);
2551 
                set_high
2552 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0, sp + 4);
2553 
 
2554 
                for (i = 0; i < 32; i++)
2555 
                  current_cpu->thread_data[threadno].sigdata[i + 1].blocked
2556 
                    = (set_low & (1 << i)) != 0;
2557 
                for (i = 0; i < 31; i++)
2558 
                  current_cpu->thread_data[threadno].sigdata[i + 33].blocked
2559 
                    = (set_high & (1 << i)) != 0;
2560 
              }
2561 
 
2562 
            /* The mask changed, so a signal may be unblocked for
2563 
               execution.  */
2564 
            current_cpu->thread_data[threadno].sigpending = 1;
2565 
 
2566 
            memcpy (&current_cpu->cpu_data_placeholder,
2567 
                    current_cpu->thread_data[threadno].cpu_context_atsignal,
2568 
                    current_cpu->thread_cpu_data_size);
2569 
            free (current_cpu->thread_data[threadno].cpu_context_atsignal);
2570 
            current_cpu->thread_data[threadno].cpu_context_atsignal = NULL;
2571 
 
2572 
            /* The return value must come from the saved R10.  */
2573 
            (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_R10, regbuf, 4);
2574 
            retval = bfd_getl32 (regbuf);
2575 
 
2576 
            /* We must also break the "sigsuspension loop".  */
2577 
            if (was_sigsuspended)
2578 
              sim_pc_set (current_cpu, sim_pc_get (current_cpu) + 2);
2579 
            break;
2580 
          }
2581 
 
2582 
        case TARGET_SYS_rt_sigsuspend:
2583 
          {
2584 
            USI newsetp = arg1;
2585 
            USI setsize = arg2;
2586 
 
2587 
            if (setsize != 8)
2588 
              {
2589 
                retval
2590 
                  = cris_unknown_syscall (current_cpu, pc,
2591 
                                          "Unimplemented rt_sigsuspend syscall"
2592 
                                          " arguments (0x%lx, 0x%lx)\n",
2593 
                                          (unsigned long) arg1,
2594 
                                          (unsigned long) arg2);
2595 
                break;
2596 
              }
2597 
 
2598 
            /* Don't change the signal mask if we're already in
2599 
               sigsuspend state (i.e. this syscall is a rerun).  */
2600 
            else if (!current_cpu->thread_data[threadno].sigsuspended)
2601 
              {
2602 
                USI set_low
2603 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0,
2604 
                                               newsetp);
2605 
                USI set_high
2606 
                  = sim_core_read_unaligned_4 (current_cpu, pc, 0,
2607 
                                               newsetp + 4);
2608 
                int i;
2609 
 
2610 
                /* Save the current sigmask and insert the user-supplied
2611 
                   one.  */
2612 
                for (i = 0; i < 32; i++)
2613 
                  {
2614 
                    current_cpu->thread_data[threadno]
2615 
                      .sigdata[i + 1].blocked_suspendsave
2616 
                      = current_cpu->thread_data[threadno]
2617 
                      .sigdata[i + 1].blocked;
2618 
 
2619 
                    current_cpu->thread_data[threadno]
2620 
                      .sigdata[i + 1].blocked = (set_low & (1 << i)) != 0;
2621 
                  }
2622 
                for (i = 0; i < 31; i++)
2623 
                  {
2624 
                    current_cpu->thread_data[threadno]
2625 
                      .sigdata[i + 33].blocked_suspendsave
2626 
                      = current_cpu->thread_data[threadno]
2627 
                      .sigdata[i + 33].blocked;
2628 
                    current_cpu->thread_data[threadno]
2629 
                      .sigdata[i + 33].blocked = (set_high & (1 << i)) != 0;
2630 
                  }
2631 
 
2632 
                current_cpu->thread_data[threadno].sigsuspended = 1;
2633 
 
2634 
                /* The mask changed, so a signal may be unblocked for
2635 
                   execution. */
2636 
                current_cpu->thread_data[threadno].sigpending = 1;
2637 
              }
2638 
 
2639 
            /* Because we don't use arg1 (newsetp) when this syscall is
2640 
               rerun, it doesn't matter that we overwrite it with the
2641 
               (constant) return value.  */
2642 
            retval = -cb_host_to_target_errno (cb, EINTR);
2643 
            sim_pc_set (current_cpu, pc);
2644 
            break;
2645 
          }
2646 
 
2647 
          /* Add case labels here for other syscalls using the 32-bit
2648 
             "struct stat", provided they have a corresponding simulator
2649 
             function of course.  */
2650 
        case TARGET_SYS_stat:
2651 
        case TARGET_SYS_fstat:
2652 
          {
2653 
            /* As long as the infrastructure doesn't cache anything
2654 
               related to the stat mapping, this trick gets us a dual
2655 
               "struct stat"-type mapping in the least error-prone way.  */
2656 
            const char *saved_map = cb->stat_map;
2657 
            CB_TARGET_DEFS_MAP *saved_syscall_map = cb->syscall_map;
2658 
 
2659 
            cb->syscall_map = (CB_TARGET_DEFS_MAP *) syscall_stat32_map;
2660 
            cb->stat_map = stat32_map;
2661 
 
2662 
            if (cb_syscall (cb, &s) != CB_RC_OK)
2663 
              {
2664 
                abort ();
2665 
                sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped,
2666 
                                 SIM_SIGILL);
2667 
              }
2668 
            retval = s.result == -1 ? -s.errcode : s.result;
2669 
 
2670 
            cb->stat_map = saved_map;
2671 
            cb->syscall_map = saved_syscall_map;
2672 
            break;
2673 
          }
2674 
 
2675 
        case TARGET_SYS_getcwd:
2676 
          {
2677 
            USI buf = arg1;
2678 
            USI size = arg2;
2679 
 
2680 
            char *cwd = xmalloc (SIM_PATHMAX);
2681 
            if (cwd != getcwd (cwd, SIM_PATHMAX))
2682 
              abort ();
2683 
 
2684 
            /* FIXME: When and if we support chdir, we need something
2685 
               a bit more elaborate.  */
2686 
            if (simulator_sysroot[0] != '\0')
2687 
              strcpy (cwd, "/");
2688 
 
2689 
            retval = -cb_host_to_target_errno (cb, ERANGE);
2690 
            if (strlen (cwd) + 1 <= size)
2691 
              {
2692 
                retval = strlen (cwd) + 1;
2693 
                if (sim_core_write_buffer (sd, current_cpu, 0, cwd,
2694 
                                           buf, retval)
2695 
                    != (unsigned int) retval)
2696 
                  retval = -cb_host_to_target_errno (cb, EFAULT);
2697 
              }
2698 
            free (cwd);
2699 
            break;
2700 
          }
2701 
 
2702 
        case TARGET_SYS_access:
2703 
          {
2704 
            SI path = arg1;
2705 
            SI mode = arg2;
2706 
            char *pbuf = xmalloc (SIM_PATHMAX);
2707 
            int i;
2708 
            int o = 0;
2709 
            int hmode = 0;
2710 
 
2711 
            if (sim_core_read_unaligned_1 (current_cpu, pc, 0, path) == '/')
2712 
              {
2713 
                strcpy (pbuf, simulator_sysroot);
2714 
                o += strlen (simulator_sysroot);
2715 
              }
2716 
 
2717 
            for (i = 0; i + o < SIM_PATHMAX; i++)
2718 
              {
2719 
                pbuf[i + o]
2720 
                  = sim_core_read_unaligned_1 (current_cpu, pc, 0, path + i);
2721 
                if (pbuf[i + o] == 0)
2722 
                  break;
2723 
              }
2724 
 
2725 
            if (i + o == SIM_PATHMAX)
2726 
              {
2727 
                retval = -cb_host_to_target_errno (cb, ENAMETOOLONG);
2728 
                break;
2729 
              }
2730 
 
2731 
            /* Assert that we don't get calls for files for which we
2732 
               don't have support.  */
2733 
            if (strncmp (pbuf + strlen (simulator_sysroot),
2734 
                         "/proc/", 6) == 0)
2735 
              abort ();
2736 
#define X_AFLAG(x) if (mode & TARGET_ ## x) hmode |= x
2737 
            X_AFLAG (R_OK);
2738 
            X_AFLAG (W_OK);
2739 
            X_AFLAG (X_OK);
2740 
            X_AFLAG (F_OK);
2741 
#undef X_AFLAG
2742 
 
2743 
            if (access (pbuf, hmode) != 0)
2744 
              retval = -cb_host_to_target_errno (cb, errno);
2745 
            else
2746 
              retval = 0;
2747 
 
2748 
            free (pbuf);
2749 
            break;
2750 
          }
2751 
 
2752 
        case TARGET_SYS_readlink:
2753 
          {
2754 
            SI path = arg1;
2755 
            SI buf = arg2;
2756 
            SI bufsiz = arg3;
2757 
            char *pbuf = xmalloc (SIM_PATHMAX);
2758 
            char *lbuf = xmalloc (SIM_PATHMAX);
2759 
            char *lbuf_alloc = lbuf;
2760 
            int nchars = -1;
2761 
            int i;
2762 
            int o = 0;
2763 
 
2764 
            if (sim_core_read_unaligned_1 (current_cpu, pc, 0, path) == '/')
2765 
              {
2766 
                strcpy (pbuf, simulator_sysroot);
2767 
                o += strlen (simulator_sysroot);
2768 
              }
2769 
 
2770 
            for (i = 0; i + o < SIM_PATHMAX; i++)
2771 
              {
2772 
                pbuf[i + o]
2773 
                  = sim_core_read_unaligned_1 (current_cpu, pc, 0, path + i);
2774 
                if (pbuf[i + o] == 0)
2775 
                  break;
2776 
              }
2777 
 
2778 
            if (i + o == SIM_PATHMAX)
2779 
              {
2780 
                retval = -cb_host_to_target_errno (cb, ENAMETOOLONG);
2781 
                break;
2782 
              }
2783 
 
2784 
            /* Intervene calls for certain files expected in the target
2785 
               proc file system.  */
2786 
            if (strcmp (pbuf + strlen (simulator_sysroot),
2787 
                        "/proc/" XSTRING (TARGET_PID) "/exe") == 0)
2788 
              {
2789 
                char *argv0
2790 
                  = (STATE_PROG_ARGV (sd) != NULL
2791 
                     ? *STATE_PROG_ARGV (sd) : NULL);
2792 
 
2793 
                if (argv0 == NULL || *argv0 == '.')
2794 
                  {
2795 
                    retval
2796 
                      = cris_unknown_syscall (current_cpu, pc,
2797 
                                              "Unimplemented readlink syscall "
2798 
                                              "(0x%lx: [\"%s\"], 0x%lx)\n",
2799 
                                              (unsigned long) arg1, pbuf,
2800 
                                              (unsigned long) arg2);
2801 
                    break;
2802 
                  }
2803 
                else if (*argv0 == '/')
2804 
                  {
2805 
                    if (strncmp (simulator_sysroot, argv0,
2806 
                                 strlen (simulator_sysroot)) == 0)
2807 
                      argv0 += strlen (simulator_sysroot);
2808 
 
2809 
                    strcpy (lbuf, argv0);
2810 
                    nchars = strlen (argv0) + 1;
2811 
                  }
2812 
                else
2813 
                  {
2814 
                    if (getcwd (lbuf, SIM_PATHMAX) != NULL
2815 
                        && strlen (lbuf) + 2 + strlen (argv0) < SIM_PATHMAX)
2816 
                      {
2817 
                        if (strncmp (simulator_sysroot, lbuf,
2818 
                                     strlen (simulator_sysroot)) == 0)
2819 
                          lbuf += strlen (simulator_sysroot);
2820 
 
2821 
                        strcat (lbuf, "/");
2822 
                        strcat (lbuf, argv0);
2823 
                        nchars = strlen (lbuf) + 1;
2824 
                      }
2825 
                    else
2826 
                      abort ();
2827 
                  }
2828 
              }
2829 
            else
2830 
              nchars = readlink (pbuf, lbuf, SIM_PATHMAX);
2831 
 
2832 
            /* We trust that the readlink result returns a *relative*
2833 
               link, or one already adjusted for the file-path-prefix.
2834 
               (We can't generally tell the difference, so we go with
2835 
               the easiest decision; no adjustment.)  */
2836 
 
2837 
            if (nchars == -1)
2838 
              {
2839 
                retval = -cb_host_to_target_errno (cb, errno);
2840 
                break;
2841 
              }
2842 
 
2843 
            if (bufsiz < nchars)
2844 
              nchars = bufsiz;
2845 
 
2846 
            if (sim_core_write_buffer (sd, current_cpu, write_map, lbuf,
2847 
                                       buf, nchars) != (unsigned int) nchars)
2848 
              retval = -cb_host_to_target_errno (cb, EFAULT);
2849 
            else
2850 
              retval = nchars;
2851 
 
2852 
            free (pbuf);
2853 
            free (lbuf_alloc);
2854 
            break;
2855 
          }
2856 
 
2857 
        case TARGET_SYS_sched_getscheduler:
2858 
          {
2859 
            USI pid = arg1;
2860 
 
2861 
            /* FIXME: Search (other) existing threads.  */
2862 
            if (pid != 0 && pid != TARGET_PID)
2863 
              retval = -cb_host_to_target_errno (cb, ESRCH);
2864 
            else
2865 
              retval = TARGET_SCHED_OTHER;
2866 
            break;
2867 
          }
2868 
 
2869 
        case TARGET_SYS_sched_getparam:
2870 
          {
2871 
            USI pid = arg1;
2872 
            USI paramp = arg2;
2873 
 
2874 
            /* The kernel says:
2875 
               struct sched_param {
2876 
                        int sched_priority;
2877 
               }; */
2878 
 
2879 
            if (pid != 0 && pid != TARGET_PID)
2880 
              retval = -cb_host_to_target_errno (cb, ESRCH);
2881 
            else
2882 
              {
2883 
                /* FIXME: Save scheduler setting before threads are
2884 
                   created too.  */
2885 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, paramp,
2886 
                                            current_cpu->thread_data != NULL
2887 
                                            ? (current_cpu
2888 
                                               ->thread_data[threadno]
2889 
                                               .priority)
2890 
                                            : 0);
2891 
                retval = 0;
2892 
              }
2893 
            break;
2894 
          }
2895 
 
2896 
        case TARGET_SYS_sched_setparam:
2897 
          {
2898 
            USI pid = arg1;
2899 
            USI paramp = arg2;
2900 
 
2901 
            if ((pid != 0 && pid != TARGET_PID)
2902 
                || sim_core_read_unaligned_4 (current_cpu, pc, 0,
2903 
                                              paramp) != 0)
2904 
              retval = -cb_host_to_target_errno (cb, EINVAL);
2905 
            else
2906 
              retval = 0;
2907 
            break;
2908 
          }
2909 
 
2910 
        case TARGET_SYS_sched_setscheduler:
2911 
          {
2912 
            USI pid = arg1;
2913 
            USI policy = arg2;
2914 
            USI paramp = arg3;
2915 
 
2916 
            if ((pid != 0 && pid != TARGET_PID)
2917 
                || policy != TARGET_SCHED_OTHER
2918 
                || sim_core_read_unaligned_4 (current_cpu, pc, 0,
2919 
                                              paramp) != 0)
2920 
              retval = -cb_host_to_target_errno (cb, EINVAL);
2921 
            else
2922 
              /* FIXME: Save scheduler setting to be read in later
2923 
                 sched_getparam calls.  */
2924 
              retval = 0;
2925 
            break;
2926 
          }
2927 
 
2928 
        case TARGET_SYS_sched_yield:
2929 
          /* We reschedule to the next thread after a syscall anyway, so
2930 
             we don't have to do anything here than to set the return
2931 
             value.  */
2932 
          retval = 0;
2933 
          break;
2934 
 
2935 
        case TARGET_SYS_sched_get_priority_min:
2936 
        case TARGET_SYS_sched_get_priority_max:
2937 
          if (arg1 != 0)
2938 
            retval = -cb_host_to_target_errno (cb, EINVAL);
2939 
          else
2940 
            retval = 0;
2941 
          break;
2942 
 
2943 
        case TARGET_SYS_ugetrlimit:
2944 
          {
2945 
            unsigned int curlim, maxlim;
2946 
            if (arg1 != TARGET_RLIMIT_STACK && arg1 != TARGET_RLIMIT_NOFILE)
2947 
              {
2948 
                retval = -cb_host_to_target_errno (cb, EINVAL);
2949 
                break;
2950 
              }
2951 
 
2952 
            /* The kernel says:
2953 
               struct rlimit {
2954 
                       unsigned long   rlim_cur;
2955 
                       unsigned long   rlim_max;
2956 
               }; */
2957 
            if (arg1 == TARGET_RLIMIT_NOFILE)
2958 
              {
2959 
                /* Sadly a very low limit.  Better not lie, though.  */
2960 
                maxlim = curlim = MAX_CALLBACK_FDS;
2961 
              }
2962 
            else /* arg1 == TARGET_RLIMIT_STACK */
2963 
              {
2964 
                maxlim = 0xffffffff;
2965 
                curlim = 0x800000;
2966 
              }
2967 
            sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2, curlim);
2968 
            sim_core_write_unaligned_4 (current_cpu, pc, 0, arg2 + 4, maxlim);
2969 
            retval = 0;
2970 
            break;
2971 
          }
2972 
 
2973 
        case TARGET_SYS_setrlimit:
2974 
          if (arg1 != TARGET_RLIMIT_STACK)
2975 
            {
2976 
              retval = -cb_host_to_target_errno (cb, EINVAL);
2977 
              break;
2978 
            }
2979 
          /* FIXME: Save values for future ugetrlimit calls.  */
2980 
          retval = 0;
2981 
          break;
2982 
 
2983 
        /* Provide a very limited subset of the sysctl functions, and
2984 
           abort for the rest. */
2985 
        case TARGET_SYS__sysctl:
2986 
          {
2987 
            /* The kernel says:
2988 
               struct __sysctl_args {
2989 
                int *name;
2990 
                int nlen;
2991 
                void *oldval;
2992 
                size_t *oldlenp;
2993 
                void *newval;
2994 
                size_t newlen;
2995 
                unsigned long __unused[4];
2996 
               }; */
2997 
            SI name = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1);
2998 
            SI name0 = name == 0
2999 
              ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, name);
3000 
            SI name1 = name == 0
3001 
              ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, name + 4);
3002 
            SI nlen
3003 
              =  sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 4);
3004 
            SI oldval
3005 
              =  sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 8);
3006 
            SI oldlenp
3007 
              =  sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 12);
3008 
            SI oldlen = oldlenp == 0
3009 
              ? 0 : sim_core_read_unaligned_4 (current_cpu, pc, 0, oldlenp);
3010 
            SI newval
3011 
              =  sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 16);
3012 
            SI newlen
3013 
              = sim_core_read_unaligned_4 (current_cpu, pc, 0, arg1 + 20);
3014 
 
3015 
            if (name0 == TARGET_CTL_KERN && name1 == TARGET_CTL_KERN_VERSION)
3016 
              {
3017 
                SI to_write = oldlen < (SI) sizeof (TARGET_UTSNAME)
3018 
                  ? oldlen : (SI) sizeof (TARGET_UTSNAME);
3019 
 
3020 
                sim_core_write_unaligned_4 (current_cpu, pc, 0, oldlenp,
3021 
                                            sizeof (TARGET_UTSNAME));
3022 
 
3023 
                if (sim_core_write_buffer (sd, current_cpu, write_map,
3024 
                                           TARGET_UTSNAME, oldval,
3025 
                                           to_write)
3026 
                    != (unsigned int) to_write)
3027 
                  retval = -cb_host_to_target_errno (cb, EFAULT);
3028 
                else
3029 
                  retval = 0;
3030 
                break;
3031 
              }
3032 
 
3033 
            retval
3034 
              = cris_unknown_syscall (current_cpu, pc,
3035 
                                      "Unimplemented _sysctl syscall "
3036 
                                      "(0x%lx: [0x%lx, 0x%lx],"
3037 
                                      " 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx)\n",
3038 
                                      (unsigned long) name,
3039 
                                      (unsigned long) name0,
3040 
                                      (unsigned long) name1,
3041 
                                      (unsigned long) nlen,
3042 
                                      (unsigned long) oldval,
3043 
                                      (unsigned long) oldlenp,
3044 
                                      (unsigned long) newval,
3045 
                                      (unsigned long) newlen);
3046 
            break;
3047 
          }
3048 
 
3049 
        case TARGET_SYS_exit:
3050 
          {
3051 
            /* Here for all but the last thread.  */
3052 
            int i;
3053 
            int pid
3054 
              = current_cpu->thread_data[threadno].threadid + TARGET_PID;
3055 
            int ppid
3056 
              = (current_cpu->thread_data[threadno].parent_threadid
3057 
                 + TARGET_PID);
3058 
            int exitsig = current_cpu->thread_data[threadno].exitsig;
3059 
 
3060 
            /* Any children are now all orphans.  */
3061 
            for (i = 0; i < SIM_TARGET_MAX_THREADS; i++)
3062 
              if (current_cpu->thread_data[i].parent_threadid
3063 
                  == current_cpu->thread_data[threadno].threadid)
3064 
                /* Make getppid(2) return 1 for them, poor little ones.  */
3065 
                current_cpu->thread_data[i].parent_threadid = -TARGET_PID + 1;
3066 
 
3067 
            /* Free the cpu context data.  When the parent has received
3068 
               the exit status, we'll clear the entry too.  */
3069 
            free (current_cpu->thread_data[threadno].cpu_context);
3070 
            current_cpu->thread_data[threadno].cpu_context = NULL;
3071 
            current_cpu->m1threads--;
3072 
            if (arg1 != 0)
3073 
              {
3074 
                sim_io_eprintf (sd, "Thread %d exited with status %d\n",
3075 
                                pid, arg1);
3076 
                sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped,
3077 
                                 SIM_SIGILL);
3078 
              }
3079 
 
3080 
            /* Still, we may want to support non-zero exit values.  */
3081 
            current_cpu->thread_data[threadno].exitval = arg1 << 8;
3082 
 
3083 
            if (exitsig)
3084 
              deliver_signal (current_cpu, exitsig, ppid);
3085 
            break;
3086 
          }
3087 
 
3088 
        case TARGET_SYS_clone:
3089 
          {
3090 
            int nthreads = current_cpu->m1threads + 1;
3091 
            void *thread_cpu_data;
3092 
            bfd_byte old_sp_buf[4];
3093 
            bfd_byte sp_buf[4];
3094 
            const bfd_byte zeros[4] = { 0, 0, 0, 0 };
3095 
            int i;
3096 
 
3097 
            /* That's right, the syscall clone arguments are reversed
3098 
               compared to sys_clone notes in clone(2) and compared to
3099 
               other Linux ports (i.e. it's the same order as in the
3100 
               clone(2) libcall).  */
3101 
            USI flags = arg2;
3102 
            USI newsp = arg1;
3103 
 
3104 
            if (nthreads == SIM_TARGET_MAX_THREADS)
3105 
              {
3106 
                retval = -cb_host_to_target_errno (cb, EAGAIN);
3107 
                break;
3108 
              }
3109 
 
3110 
            /* FIXME: Implement the low byte.  */
3111 
            if ((flags & ~TARGET_CSIGNAL) !=
3112 
                (TARGET_CLONE_VM
3113 
                 | TARGET_CLONE_FS
3114 
                 | TARGET_CLONE_FILES
3115 
                 | TARGET_CLONE_SIGHAND)
3116 
                || newsp == 0)
3117 
              {
3118 
                retval
3119 
                  = cris_unknown_syscall (current_cpu, pc,
3120 
                                          "Unimplemented clone syscall "
3121 
                                          "(0x%lx, 0x%lx)\n",
3122 
                                          (unsigned long) arg1,
3123 
                                          (unsigned long) arg2);
3124 
                break;
3125 
              }
3126 
 
3127 
            if (current_cpu->thread_data == NULL)
3128 
              make_first_thread (current_cpu);
3129 
 
3130 
            /* The created thread will get the new SP and a cleared R10.
3131 
               Since it's created out of a copy of the old thread and we
3132 
               don't have a set-register-function that just take the
3133 
               cpu_data as a parameter, we set the childs values first,
3134 
               and write back or overwrite them in the parent after the
3135 
               copy.  */
3136 
            (*CPU_REG_FETCH (current_cpu)) (current_cpu,
3137 
                                            H_GR_SP, old_sp_buf, 4);
3138 
            bfd_putl32 (newsp, sp_buf);
3139 
            (*CPU_REG_STORE (current_cpu)) (current_cpu,
3140 
                                            H_GR_SP, sp_buf, 4);
3141 
            (*CPU_REG_STORE (current_cpu)) (current_cpu,
3142 
                                            H_GR_R10, (bfd_byte *) zeros, 4);
3143 
            thread_cpu_data
3144 
              = (*current_cpu
3145 
                 ->make_thread_cpu_data) (current_cpu,
3146 
                                          &current_cpu->cpu_data_placeholder);
3147 
            (*CPU_REG_STORE (current_cpu)) (current_cpu,
3148 
                                            H_GR_SP, old_sp_buf, 4);
3149 
 
3150 
            retval = ++current_cpu->max_threadid + TARGET_PID;
3151 
 
3152 
            /* Find an unused slot.  After a few threads have been created
3153 
               and exited, the array is expected to be a bit fragmented.
3154 
               We don't reuse the first entry, though, that of the
3155 
               original thread.  */
3156 
            for (i = 1; i < SIM_TARGET_MAX_THREADS; i++)
3157 
              if (current_cpu->thread_data[i].cpu_context == NULL
3158 
                  /* Don't reuse a zombied entry.  */
3159 
                  && current_cpu->thread_data[i].threadid == 0)
3160 
                break;
3161 
 
3162 
            memcpy (&current_cpu->thread_data[i],
3163 
                    &current_cpu->thread_data[threadno],
3164 
                    sizeof (current_cpu->thread_data[i]));
3165 
            current_cpu->thread_data[i].cpu_context = thread_cpu_data;
3166 
            current_cpu->thread_data[i].cpu_context_atsignal = NULL;
3167 
            current_cpu->thread_data[i].threadid = current_cpu->max_threadid;
3168 
            current_cpu->thread_data[i].parent_threadid
3169 
              = current_cpu->thread_data[threadno].threadid;
3170 
            current_cpu->thread_data[i].pipe_read_fd = 0;
3171 
            current_cpu->thread_data[i].pipe_write_fd = 0;
3172 
            current_cpu->thread_data[i].at_syscall = 0;
3173 
            current_cpu->thread_data[i].sigpending = 0;
3174 
            current_cpu->thread_data[i].sigsuspended = 0;
3175 
            current_cpu->thread_data[i].exitsig = flags & TARGET_CSIGNAL;
3176 
            current_cpu->m1threads = nthreads;
3177 
            break;
3178 
          }
3179 
 
3180 
        /* Better watch these in case they do something necessary.  */
3181 
        case TARGET_SYS_socketcall:
3182 
          retval = -cb_host_to_target_errno (cb, ENOSYS);
3183 
          break;
3184 
 
3185 
        case TARGET_SYS_set_thread_area:
3186 
          /* Do the same error check as Linux.  */
3187 
          if (arg1 & 255)
3188 
            {
3189 
              retval = -cb_host_to_target_errno (cb, EINVAL);
3190 
              break;
3191 
            }
3192 
          (*current_cpu->set_target_thread_data) (current_cpu, arg1);
3193 
          retval = 0;
3194 
          break;
3195 
 
3196 
        unimplemented_syscall:
3197 
        default:
3198 
          retval
3199 
            = cris_unknown_syscall (current_cpu, pc,
3200 
                                    "Unimplemented syscall: %d "
3201 
                                    "(0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n",
3202 
                                    callnum, arg1, arg2, arg3, arg4, arg5,
3203 
                                    arg6);
3204 
        }
3205 
    }
3206 
 
3207 
  /* Minimal support for fcntl F_GETFL as used in open+fdopen.  */
3208 
  if (callnum == TARGET_SYS_open)
3209 
    {
3210 
      current_cpu->last_open_fd = retval;
3211 
      current_cpu->last_open_flags = arg2;
3212 
    }
3213 
 
3214 
  current_cpu->last_syscall = callnum;
3215 
 
3216 
  /* A system call is a rescheduling point.  For the time being, we don't
3217 
     reschedule anywhere else.  */
3218 
  if (current_cpu->m1threads != 0
3219 
      /* We need to schedule off from an exiting thread that is the
3220 
         second-last one.  */
3221 
      || (current_cpu->thread_data != NULL
3222 
          && current_cpu->thread_data[threadno].cpu_context == NULL))
3223 
    {
3224 
      bfd_byte retval_buf[4];
3225 
 
3226 
      current_cpu->thread_data[threadno].last_execution
3227 
        = TARGET_TIME_MS (current_cpu);
3228 
      bfd_putl32 (retval, retval_buf);
3229 
      (*CPU_REG_STORE (current_cpu)) (current_cpu, H_GR_R10, retval_buf, 4);
3230 
 
3231 
      current_cpu->thread_data[threadno].at_syscall = 1;
3232 
      reschedule (current_cpu);
3233 
 
3234 
      (*CPU_REG_FETCH (current_cpu)) (current_cpu, H_GR_R10, retval_buf, 4);
3235 
      retval = bfd_getl32 (retval_buf);
3236 
    }
3237 
 
3238 
  return retval;
3239 
}
3240 
 
3241 
/* Callback from simulator write saying that the pipe at (reader, writer)
3242 
   is now non-empty (so the writer should wait until the pipe is empty, at
3243 
   least not write to this or any other pipe).  Simplest is to just wait
3244 
   until the pipe is empty.  */
3245 
 
3246 
static void
3247 
cris_pipe_nonempty (host_callback *cb ATTRIBUTE_UNUSED,
3248 
                    int reader, int writer)
3249 
{
3250 
  SIM_CPU *cpu = current_cpu_for_cb_callback;
3251 
  const bfd_byte zeros[4] = { 0, 0, 0, 0 };
3252 
 
3253 
  /* It's the current thread: we just have to re-run the current
3254 
     syscall instruction (presumably "break 13") and change the syscall
3255 
     to the special simulator-wait code.  Oh, and set a marker that
3256 
     we're waiting, so we can disambiguate the special call from a
3257 
     program error.
3258 
 
3259 
     This function may be called multiple times between cris_pipe_empty,
3260 
     but we must avoid e.g. decreasing PC every time.  Check fd markers
3261 
     to tell.  */
3262 
  if (cpu->thread_data == NULL)
3263 
    {
3264 
      sim_io_eprintf (CPU_STATE (cpu),
3265 
                      "Terminating simulation due to writing pipe rd:wr %d:%d"
3266 
                      " from one single thread\n", reader, writer);
3267 
      sim_engine_halt (CPU_STATE (cpu), cpu,
3268 
                       NULL, sim_pc_get (cpu), sim_stopped, SIM_SIGILL);
3269 
    }
3270 
  else if (cpu->thread_data[cpu->threadno].pipe_write_fd == 0)
3271 
    {
3272 
      cpu->thread_data[cpu->threadno].pipe_write_fd = writer;
3273 
      cpu->thread_data[cpu->threadno].pipe_read_fd = reader;
3274 
      /* FIXME: We really shouldn't change registers other than R10 in
3275 
         syscalls (like R9), here or elsewhere.  */
3276 
      (*CPU_REG_STORE (cpu)) (cpu, H_GR_R9, (bfd_byte *) zeros, 4);
3277 
      sim_pc_set (cpu, sim_pc_get (cpu) - 2);
3278 
    }
3279 
}
3280 
 
3281 
/* Callback from simulator close or read call saying that the pipe at
3282 
   (reader, writer) is now empty (so the writer can write again, perhaps
3283 
   leave a waiting state).  If there are bytes remaining, they couldn't be
3284 
   consumed (perhaps due to the pipe closing).  */
3285 
 
3286 
static void
3287 
cris_pipe_empty (host_callback *cb,
3288 
                 int reader,
3289 
                 int writer)
3290 
{
3291 
  int i;
3292 
  SIM_CPU *cpu = current_cpu_for_cb_callback;
3293 
  SIM_DESC sd = CPU_STATE (current_cpu_for_cb_callback);
3294 
  bfd_byte r10_buf[4];
3295 
  int remaining
3296 
    = cb->pipe_buffer[writer].size - cb->pipe_buffer[reader].size;
3297 
 
3298 
  /* We need to find the thread that waits for this pipe.  */
3299 
  for (i = 0; i < SIM_TARGET_MAX_THREADS; i++)
3300 
    if (cpu->thread_data[i].cpu_context
3301 
        && cpu->thread_data[i].pipe_write_fd == writer)
3302 
      {
3303 
        int retval;
3304 
 
3305 
        /* Temporarily switch to this cpu context, so we can change the
3306 
           PC by ordinary calls.  */
3307 
 
3308 
        memcpy (cpu->thread_data[cpu->threadno].cpu_context,
3309 
                &cpu->cpu_data_placeholder,
3310 
                cpu->thread_cpu_data_size);
3311 
        memcpy (&cpu->cpu_data_placeholder,
3312 
                cpu->thread_data[i].cpu_context,
3313 
                cpu->thread_cpu_data_size);
3314 
 
3315 
        /* The return value is supposed to contain the number of
3316 
           written bytes, which is the number of bytes requested and
3317 
           returned at the write call.  You might think the right
3318 
           thing is to adjust the return-value to be only the
3319 
           *consumed* number of bytes, but it isn't.  We're only
3320 
           called if the pipe buffer is fully consumed or it is being
3321 
           closed, possibly with remaining bytes.  For the latter
3322 
           case, the writer is still supposed to see success for
3323 
           PIPE_BUF bytes (a constant which we happen to know and is
3324 
           unlikely to change).  The return value may also be a
3325 
           negative number; an error value.  This case is covered
3326 
           because "remaining" is always >= 0.  */
3327 
        (*CPU_REG_FETCH (cpu)) (cpu, H_GR_R10, r10_buf, 4);
3328 
        retval = (int) bfd_getl_signed_32 (r10_buf);
3329 
        if (retval - remaining > TARGET_PIPE_BUF)
3330 
          {
3331 
            bfd_putl32 (retval - remaining, r10_buf);
3332 
            (*CPU_REG_STORE (cpu)) (cpu, H_GR_R10, r10_buf, 4);
3333 
          }
3334 
        sim_pc_set (cpu, sim_pc_get (cpu) + 2);
3335 
        memcpy (cpu->thread_data[i].cpu_context,
3336 
                &cpu->cpu_data_placeholder,
3337 
                cpu->thread_cpu_data_size);
3338 
        memcpy (&cpu->cpu_data_placeholder,
3339 
                cpu->thread_data[cpu->threadno].cpu_context,
3340 
                cpu->thread_cpu_data_size);
3341 
        cpu->thread_data[i].pipe_read_fd = 0;
3342 
        cpu->thread_data[i].pipe_write_fd = 0;
3343 
        return;
3344 
      }
3345 
 
3346 
  abort ();
3347 
}
3348 
 
3349 
/* We have a simulator-specific notion of time.  See TARGET_TIME.  */
3350 
 
3351 
static long
3352 
cris_time (host_callback *cb ATTRIBUTE_UNUSED, long *t)
3353 
{
3354 
  long retval = TARGET_TIME (current_cpu_for_cb_callback);
3355 
  if (t)
3356 
    *t = retval;
3357 
  return retval;
3358 
}
3359 
 
3360 
/* Set target-specific callback data. */
3361 
 
3362 
void
3363 
cris_set_callbacks (host_callback *cb)
3364 
{
3365 
  /* Yeargh, have to cast away constness to avoid warnings.  */
3366 
  cb->syscall_map = (CB_TARGET_DEFS_MAP *) syscall_map;
3367 
  cb->errno_map = (CB_TARGET_DEFS_MAP *) errno_map;
3368 
 
3369 
  /* The kernel stat64 layout.  If we see a file > 2G, the "long"
3370 
     parameter to cb_store_target_endian will make st_size negative.
3371 
     Similarly for st_ino.  FIXME: Find a 64-bit type, and use it
3372 
     *unsigned*, and/or add syntax for signed-ness.  */
3373 
  cb->stat_map = stat_map;
3374 
  cb->open_map = (CB_TARGET_DEFS_MAP *) open_map;
3375 
  cb->pipe_nonempty = cris_pipe_nonempty;
3376 
  cb->pipe_empty = cris_pipe_empty;
3377 
  cb->time = cris_time;
3378 
}
3379 
 
3380 
/* Process an address exception.  */
3381 
 
3382 
void
3383 
cris_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia,
3384 
                  unsigned int map, int nr_bytes, address_word addr,
3385 
                  transfer_type transfer, sim_core_signals sig)
3386 
{
3387 
  sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr,
3388 
                   transfer, sig);
3389 
}

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