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