git.maemo.org Git - qemu/blob - linux-user/syscall.c

   1 /*
   2  *  Linux syscalls
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include <elf.h>
  25 #include <endian.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <fcntl.h>
  29 #include <time.h>
  30 #include <sys/types.h>
  31 #include <sys/wait.h>
  32 #include <sys/time.h>
  33 #include <sys/stat.h>
  34 #include <sys/mount.h>
  35 #include <sys/resource.h>
  36 #include <sys/mman.h>
  37 #include <sys/swap.h>
  38 #include <signal.h>
  39 #include <sched.h>
  40 #include <sys/socket.h>
  41 #include <sys/uio.h>
  42 #include <sys/poll.h>
  43 //#include <sys/user.h>
  44 #include <netinet/tcp.h>
  45
  46 #define termios host_termios
  47 #define winsize host_winsize
  48 #define termio host_termio
  49 #define sgttyb host_sgttyb /* same as target */
  50 #define tchars host_tchars /* same as target */
  51 #define ltchars host_ltchars /* same as target */
  52
  53 #include <linux/termios.h>
  54 #include <linux/unistd.h>
  55 #include <linux/utsname.h>
  56 #include <linux/cdrom.h>
  57 #include <linux/hdreg.h>
  58 #include <linux/soundcard.h>
  59 #include <linux/dirent.h>
  60
  61 #include "qemu.h"
  62
  63 //#define DEBUG
  64
  65 #ifndef PAGE_SIZE
  66 #define PAGE_SIZE 4096
  67 #define PAGE_MASK ~(PAGE_SIZE - 1)
  68 #endif
  69
  70 //#include <linux/msdos_fs.h>
  71 #define VFAT_IOCTL_READDIR_BOTH         _IOR('r', 1, struct dirent [2])
  72 #define VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
  73
  74 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
  75 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
  76 long do_sigreturn(CPUX86State *env);
  77 long do_rt_sigreturn(CPUX86State *env);
  78
  79 #define __NR_sys_uname __NR_uname
  80 #define __NR_sys_getcwd1 __NR_getcwd
  81 #define __NR_sys_statfs __NR_statfs
  82 #define __NR_sys_fstatfs __NR_fstatfs
  83 #define __NR_sys_getdents __NR_getdents
  84 #define __NR_sys_getdents64 __NR_getdents64
  85 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
  86
  87 #ifdef __NR_gettid
  88 _syscall0(int, gettid)
  89 #else
  90 static int gettid(void) {
  91     return -ENOSYS;
  92 }
  93 #endif
  94 _syscall1(int,sys_uname,struct new_utsname *,buf)
  95 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
  96 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
  97 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
  98 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
  99           loff_t *, res, uint, wh);
 100 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
 101 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
 102 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 103
 104 extern int personality(int);
 105 extern int flock(int, int);
 106 extern int setfsuid(int);
 107 extern int setfsgid(int);
 108 extern int setresuid(uid_t, uid_t, uid_t);
 109 extern int getresuid(uid_t *, uid_t *, uid_t *);
 110 extern int setresgid(gid_t, gid_t, gid_t);
 111 extern int getresgid(gid_t *, gid_t *, gid_t *);
 112
 113 static inline long get_errno(long ret)
 114 {
 115     if (ret == -1)
 116         return -errno;
 117     else
 118         return ret;
 119 }
 120
 121 static inline int is_error(long ret)
 122 {
 123     return (unsigned long)ret >= (unsigned long)(-4096);
 124 }
 125
 126 static char *target_brk;
 127 static char *target_original_brk;
 128
 129 void target_set_brk(char *new_brk)
 130 {
 131     target_brk = new_brk;
 132     target_original_brk = new_brk;
 133 }
 134
 135 static long do_brk(char *new_brk)
 136 {
 137     char *brk_page;
 138     long mapped_addr;
 139     int new_alloc_size;
 140
 141     if (!new_brk)
 142         return (long)target_brk;
 143     if (new_brk < target_original_brk)
 144         return -ENOMEM;
 145
 146     brk_page = (char *)(((unsigned long)target_brk + PAGE_SIZE - 1) & PAGE_MASK);
 147
 148     /* If the new brk is less than this, set it and we're done... */
 149     if (new_brk < brk_page) {
 150         target_brk = new_brk;
 151         return (long)target_brk;
 152     }
 153
 154     /* We need to allocate more memory after the brk... */
 155     new_alloc_size = ((new_brk - brk_page + 1)+(PAGE_SIZE-1)) & PAGE_MASK;
 156     mapped_addr = get_errno((long)mmap((caddr_t)brk_page, new_alloc_size,
 157                                        PROT_READ|PROT_WRITE,
 158                                        MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 159
 160     if (is_error(mapped_addr)) {
 161         return mapped_addr;
 162     } else {
 163         target_brk = new_brk;
 164         return (long)target_brk;
 165     }
 166 }
 167
 168 static inline fd_set *target_to_host_fds(fd_set *fds,
 169                                          target_long *target_fds, int n)
 170 {
 171 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 172     return (fd_set *)target_fds;
 173 #else
 174     int i, b;
 175     if (target_fds) {
 176         FD_ZERO(fds);
 177         for(i = 0;i < n; i++) {
 178             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 179                  (i & (TARGET_LONG_BITS - 1))) & 1;
 180             if (b)
 181                 FD_SET(i, fds);
 182         }
 183         return fds;
 184     } else {
 185         return NULL;
 186     }
 187 #endif
 188 }
 189
 190 static inline void host_to_target_fds(target_long *target_fds,
 191                                       fd_set *fds, int n)
 192 {
 193 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 194     /* nothing to do */
 195 #else
 196     int i, nw, j, k;
 197     target_long v;
 198
 199     if (target_fds) {
 200         nw = n / TARGET_LONG_BITS;
 201         k = 0;
 202         for(i = 0;i < nw; i++) {
 203             v = 0;
 204             for(j = 0; j < TARGET_LONG_BITS; j++) {
 205                 v |= ((FD_ISSET(k, fds) != 0) << j);
 206                 k++;
 207             }
 208             target_fds[i] = tswapl(v);
 209         }
 210     }
 211 #endif
 212 }
 213
 214 static inline void target_to_host_timeval(struct timeval *tv,
 215                                           const struct target_timeval *target_tv)
 216 {
 217     tv->tv_sec = tswapl(target_tv->tv_sec);
 218     tv->tv_usec = tswapl(target_tv->tv_usec);
 219 }
 220
 221 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 222                                           const struct timeval *tv)
 223 {
 224     target_tv->tv_sec = tswapl(tv->tv_sec);
 225     target_tv->tv_usec = tswapl(tv->tv_usec);
 226 }
 227
 228
 229 static long do_select(long n,
 230                       target_long *target_rfds, target_long *target_wfds,
 231                       target_long *target_efds, struct target_timeval *target_tv)
 232 {
 233     fd_set rfds, wfds, efds;
 234     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 235     struct timeval tv, *tv_ptr;
 236     long ret;
 237
 238     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 239     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 240     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 241
 242     if (target_tv) {
 243         target_to_host_timeval(&tv, target_tv);
 244         tv_ptr = &tv;
 245     } else {
 246         tv_ptr = NULL;
 247     }
 248     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 249     if (!is_error(ret)) {
 250         host_to_target_fds(target_rfds, rfds_ptr, n);
 251         host_to_target_fds(target_wfds, wfds_ptr, n);
 252         host_to_target_fds(target_efds, efds_ptr, n);
 253
 254         if (target_tv) {
 255             host_to_target_timeval(target_tv, &tv);
 256         }
 257     }
 258     return ret;
 259 }
 260
 261 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 262                                            struct target_sockaddr *target_addr,
 263                                            socklen_t len)
 264 {
 265     memcpy(addr, target_addr, len);
 266     addr->sa_family = tswap16(target_addr->sa_family);
 267 }
 268
 269 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 270                                            struct sockaddr *addr,
 271                                            socklen_t len)
 272 {
 273     memcpy(target_addr, addr, len);
 274     target_addr->sa_family = tswap16(addr->sa_family);
 275 }
 276
 277 static inline void target_to_host_cmsg(struct msghdr *msgh,
 278                                        struct target_msghdr *target_msgh)
 279 {
 280     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 281     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 282     socklen_t space = 0;
 283
 284     while (cmsg && target_cmsg) {
 285         void *data = CMSG_DATA(cmsg);
 286         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 287
 288         int len = tswapl(target_cmsg->cmsg_len)
 289                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 290
 291         space += CMSG_SPACE(len);
 292         if (space > msgh->msg_controllen) {
 293             space -= CMSG_SPACE(len);
 294             gemu_log("Host cmsg overflow");
 295             break;
 296         }
 297
 298         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 299         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 300         cmsg->cmsg_len = CMSG_LEN(len);
 301
 302         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 303             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 304             memcpy(data, target_data, len);
 305         } else {
 306             int *fd = (int *)data;
 307             int *target_fd = (int *)target_data;
 308             int i, numfds = len / sizeof(int);
 309
 310             for (i = 0; i < numfds; i++)
 311                 fd[i] = tswap32(target_fd[i]);
 312         }
 313
 314         cmsg = CMSG_NXTHDR(msgh, cmsg);
 315         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 316     }
 317
 318     msgh->msg_controllen = space;
 319 }
 320
 321 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 322                                        struct msghdr *msgh)
 323 {
 324     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 325     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 326     socklen_t space = 0;
 327
 328     while (cmsg && target_cmsg) {
 329         void *data = CMSG_DATA(cmsg);
 330         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 331
 332         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 333
 334         space += TARGET_CMSG_SPACE(len);
 335         if (space > tswapl(target_msgh->msg_controllen)) {
 336             space -= TARGET_CMSG_SPACE(len);
 337             gemu_log("Target cmsg overflow");
 338             break;
 339         }
 340
 341         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 342         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 343         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 344
 345         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 346             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 347             memcpy(target_data, data, len);
 348         } else {
 349             int *fd = (int *)data;
 350             int *target_fd = (int *)target_data;
 351             int i, numfds = len / sizeof(int);
 352
 353             for (i = 0; i < numfds; i++)
 354                 target_fd[i] = tswap32(fd[i]);
 355         }
 356
 357         cmsg = CMSG_NXTHDR(msgh, cmsg);
 358         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 359     }
 360
 361     msgh->msg_controllen = tswapl(space);
 362 }
 363
 364 static long do_setsockopt(int sockfd, int level, int optname,
 365                           void *optval, socklen_t optlen)
 366 {
 367     if (level == SOL_TCP) {
 368         /* TCP options all take an 'int' value.  */
 369         int val;
 370
 371         if (optlen < sizeof(uint32_t))
 372             return -EINVAL;
 373
 374         val = tswap32(*(uint32_t *)optval);
 375         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 376     }
 377
 378     else if (level != SOL_SOCKET) {
 379         gemu_log("Unsupported setsockopt level: %d\n", level);
 380         return -ENOSYS;
 381     }
 382
 383     switch (optname) {
 384     /* Options with 'int' argument.  */
 385     case SO_DEBUG:
 386     case SO_REUSEADDR:
 387     case SO_TYPE:
 388     case SO_ERROR:
 389     case SO_DONTROUTE:
 390     case SO_BROADCAST:
 391     case SO_SNDBUF:
 392     case SO_RCVBUF:
 393     case SO_KEEPALIVE:
 394     case SO_OOBINLINE:
 395     case SO_NO_CHECK:
 396     case SO_PRIORITY:
 397     case SO_BSDCOMPAT:
 398     case SO_PASSCRED:
 399     case SO_TIMESTAMP:
 400     case SO_RCVLOWAT:
 401     case SO_RCVTIMEO:
 402     case SO_SNDTIMEO:
 403     {
 404         int val;
 405         if (optlen < sizeof(uint32_t))
 406             return -EINVAL;
 407         val = tswap32(*(uint32_t *)optval);
 408         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 409     }
 410
 411     default:
 412         gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
 413         return -ENOSYS;
 414     }
 415 }
 416
 417 static long do_getsockopt(int sockfd, int level, int optname,
 418                           void *optval, socklen_t *optlen)
 419 {
 420     gemu_log("getsockopt not yet supported\n");
 421     return -ENOSYS;
 422 }
 423
 424 static long do_socketcall(int num, int32_t *vptr)
 425 {
 426     long ret;
 427
 428     switch(num) {
 429     case SOCKOP_socket:
 430         {
 431             int domain = tswap32(vptr[0]);
 432             int type = tswap32(vptr[1]);
 433             int protocol = tswap32(vptr[2]);
 434
 435             ret = get_errno(socket(domain, type, protocol));
 436         }
 437         break;
 438     case SOCKOP_bind:
 439         {
 440             int sockfd = tswap32(vptr[0]);
 441             void *target_addr = (void *)tswap32(vptr[1]);
 442             socklen_t addrlen = tswap32(vptr[2]);
 443             void *addr = alloca(addrlen);
 444
 445             target_to_host_sockaddr(addr, target_addr, addrlen);
 446             ret = get_errno(bind(sockfd, addr, addrlen));
 447         }
 448         break;
 449     case SOCKOP_connect:
 450         {
 451             int sockfd = tswap32(vptr[0]);
 452             void *target_addr = (void *)tswap32(vptr[1]);
 453             socklen_t addrlen = tswap32(vptr[2]);
 454             void *addr = alloca(addrlen);
 455
 456             target_to_host_sockaddr(addr, target_addr, addrlen);
 457             ret = get_errno(connect(sockfd, addr, addrlen));
 458         }
 459         break;
 460     case SOCKOP_listen:
 461         {
 462             int sockfd = tswap32(vptr[0]);
 463             int backlog = tswap32(vptr[1]);
 464
 465             ret = get_errno(listen(sockfd, backlog));
 466         }
 467         break;
 468     case SOCKOP_accept:
 469         {
 470             int sockfd = tswap32(vptr[0]);
 471             void *target_addr = (void *)tswap32(vptr[1]);
 472             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 473             socklen_t addrlen = tswap32(*target_addrlen);
 474             void *addr = alloca(addrlen);
 475
 476             ret = get_errno(accept(sockfd, addr, &addrlen));
 477             if (!is_error(ret)) {
 478                 host_to_target_sockaddr(target_addr, addr, addrlen);
 479                 *target_addrlen = tswap32(addrlen);
 480             }
 481         }
 482         break;
 483     case SOCKOP_getsockname:
 484         {
 485             int sockfd = tswap32(vptr[0]);
 486             void *target_addr = (void *)tswap32(vptr[1]);
 487             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 488             socklen_t addrlen = tswap32(*target_addrlen);
 489             void *addr = alloca(addrlen);
 490
 491             ret = get_errno(getsockname(sockfd, addr, &addrlen));
 492             if (!is_error(ret)) {
 493                 host_to_target_sockaddr(target_addr, addr, addrlen);
 494                 *target_addrlen = tswap32(addrlen);
 495             }
 496         }
 497         break;
 498     case SOCKOP_getpeername:
 499         {
 500             int sockfd = tswap32(vptr[0]);
 501             void *target_addr = (void *)tswap32(vptr[1]);
 502             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 503             socklen_t addrlen = tswap32(*target_addrlen);
 504             void *addr = alloca(addrlen);
 505
 506             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 507             if (!is_error(ret)) {
 508                 host_to_target_sockaddr(target_addr, addr, addrlen);
 509                 *target_addrlen = tswap32(addrlen);
 510             }
 511         }
 512         break;
 513     case SOCKOP_socketpair:
 514         {
 515             int domain = tswap32(vptr[0]);
 516             int type = tswap32(vptr[1]);
 517             int protocol = tswap32(vptr[2]);
 518             int32_t *target_tab = (void *)tswap32(vptr[3]);
 519             int tab[2];
 520
 521             ret = get_errno(socketpair(domain, type, protocol, tab));
 522             if (!is_error(ret)) {
 523                 target_tab[0] = tswap32(tab[0]);
 524                 target_tab[1] = tswap32(tab[1]);
 525             }
 526         }
 527         break;
 528     case SOCKOP_send:
 529         {
 530             int sockfd = tswap32(vptr[0]);
 531             void *msg = (void *)tswap32(vptr[1]);
 532             size_t len = tswap32(vptr[2]);
 533             int flags = tswap32(vptr[3]);
 534
 535             ret = get_errno(send(sockfd, msg, len, flags));
 536         }
 537         break;
 538     case SOCKOP_recv:
 539         {
 540             int sockfd = tswap32(vptr[0]);
 541             void *msg = (void *)tswap32(vptr[1]);
 542             size_t len = tswap32(vptr[2]);
 543             int flags = tswap32(vptr[3]);
 544
 545             ret = get_errno(recv(sockfd, msg, len, flags));
 546         }
 547         break;
 548     case SOCKOP_sendto:
 549         {
 550             int sockfd = tswap32(vptr[0]);
 551             void *msg = (void *)tswap32(vptr[1]);
 552             size_t len = tswap32(vptr[2]);
 553             int flags = tswap32(vptr[3]);
 554             void *target_addr = (void *)tswap32(vptr[4]);
 555             socklen_t addrlen = tswap32(vptr[5]);
 556             void *addr = alloca(addrlen);
 557
 558             target_to_host_sockaddr(addr, target_addr, addrlen);
 559             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 560         }
 561         break;
 562     case SOCKOP_recvfrom:
 563         {
 564             int sockfd = tswap32(vptr[0]);
 565             void *msg = (void *)tswap32(vptr[1]);
 566             size_t len = tswap32(vptr[2]);
 567             int flags = tswap32(vptr[3]);
 568             void *target_addr = (void *)tswap32(vptr[4]);
 569             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 570             socklen_t addrlen = tswap32(*target_addrlen);
 571             void *addr = alloca(addrlen);
 572
 573             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 574             if (!is_error(ret)) {
 575                 host_to_target_sockaddr(target_addr, addr, addrlen);
 576                 *target_addrlen = tswap32(addrlen);
 577             }
 578         }
 579         break;
 580     case SOCKOP_shutdown:
 581         {
 582             int sockfd = tswap32(vptr[0]);
 583             int how = tswap32(vptr[1]);
 584
 585             ret = get_errno(shutdown(sockfd, how));
 586         }
 587         break;
 588     case SOCKOP_sendmsg:
 589     case SOCKOP_recvmsg:
 590         {
 591             int fd;
 592             struct target_msghdr *msgp;
 593             struct msghdr msg;
 594             int flags, count, i;
 595             struct iovec *vec;
 596             struct target_iovec *target_vec;
 597
 598             msgp = (void *)tswap32(vptr[1]);
 599             msg.msg_name = (void *)tswapl(msgp->msg_name);
 600             msg.msg_namelen = tswapl(msgp->msg_namelen);
 601             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 602             msg.msg_control = alloca(msg.msg_controllen);
 603             msg.msg_flags = tswap32(msgp->msg_flags);
 604
 605             count = tswapl(msgp->msg_iovlen);
 606             vec = alloca(count * sizeof(struct iovec));
 607             target_vec = (void *)tswapl(msgp->msg_iov);
 608             for(i = 0;i < count; i++) {
 609                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 610                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 611             }
 612             msg.msg_iovlen = count;
 613             msg.msg_iov = vec;
 614
 615             fd = tswap32(vptr[0]);
 616             flags = tswap32(vptr[2]);
 617             if (num == SOCKOP_sendmsg) {
 618                 target_to_host_cmsg(&msg, msgp);
 619                 ret = get_errno(sendmsg(fd, &msg, flags));
 620             } else {
 621                 ret = get_errno(recvmsg(fd, &msg, flags));
 622                 if (!is_error(ret))
 623                   host_to_target_cmsg(msgp, &msg);
 624             }
 625         }
 626         break;
 627     case SOCKOP_setsockopt:
 628         {
 629             int sockfd = tswap32(vptr[0]);
 630             int level = tswap32(vptr[1]);
 631             int optname = tswap32(vptr[2]);
 632             void *optval = (void *)tswap32(vptr[3]);
 633             socklen_t optlen = tswap32(vptr[4]);
 634
 635             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 636         }
 637         break;
 638     case SOCKOP_getsockopt:
 639         {
 640             int sockfd = tswap32(vptr[0]);
 641             int level = tswap32(vptr[1]);
 642             int optname = tswap32(vptr[2]);
 643             void *optval = (void *)tswap32(vptr[3]);
 644             uint32_t *target_len = (void *)tswap32(vptr[4]);
 645             socklen_t optlen = tswap32(*target_len);
 646
 647             ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
 648             if (!is_error(ret))
 649                 *target_len = tswap32(optlen);
 650         }
 651         break;
 652     default:
 653         gemu_log("Unsupported socketcall: %d\n", num);
 654         ret = -ENOSYS;
 655         break;
 656     }
 657     return ret;
 658 }
 659
 660 /* kernel structure types definitions */
 661 #define IFNAMSIZ        16
 662
 663 #define STRUCT(name, list...) STRUCT_ ## name,
 664 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 665 enum {
 666 #include "syscall_types.h"
 667 };
 668 #undef STRUCT
 669 #undef STRUCT_SPECIAL
 670
 671 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 672 #define STRUCT_SPECIAL(name)
 673 #include "syscall_types.h"
 674 #undef STRUCT
 675 #undef STRUCT_SPECIAL
 676
 677 typedef struct IOCTLEntry {
 678     int target_cmd;
 679     int host_cmd;
 680     const char *name;
 681     int access;
 682     const argtype arg_type[5];
 683 } IOCTLEntry;
 684
 685 #define IOC_R 0x0001
 686 #define IOC_W 0x0002
 687 #define IOC_RW (IOC_R | IOC_W)
 688
 689 #define MAX_STRUCT_SIZE 4096
 690
 691 const IOCTLEntry ioctl_entries[] = {
 692 #define IOCTL(cmd, access, types...) \
 693     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 694 #include "ioctls.h"
 695     { 0, 0, },
 696 };
 697
 698 static long do_ioctl(long fd, long cmd, long arg)
 699 {
 700     const IOCTLEntry *ie;
 701     const argtype *arg_type;
 702     long ret;
 703     uint8_t buf_temp[MAX_STRUCT_SIZE];
 704
 705     ie = ioctl_entries;
 706     for(;;) {
 707         if (ie->target_cmd == 0) {
 708             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 709             return -ENOSYS;
 710         }
 711         if (ie->target_cmd == cmd)
 712             break;
 713         ie++;
 714     }
 715     arg_type = ie->arg_type;
 716 #if defined(DEBUG)
 717     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 718 #endif
 719     switch(arg_type[0]) {
 720     case TYPE_NULL:
 721         /* no argument */
 722         ret = get_errno(ioctl(fd, ie->host_cmd));
 723         break;
 724     case TYPE_PTRVOID:
 725     case TYPE_INT:
 726         /* int argment */
 727         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 728         break;
 729     case TYPE_PTR:
 730         arg_type++;
 731         switch(ie->access) {
 732         case IOC_R:
 733             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 734             if (!is_error(ret)) {
 735                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 736             }
 737             break;
 738         case IOC_W:
 739             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 740             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 741             break;
 742         default:
 743         case IOC_RW:
 744             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 745             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 746             if (!is_error(ret)) {
 747                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 748             }
 749             break;
 750         }
 751         break;
 752     default:
 753         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 754         ret = -ENOSYS;
 755         break;
 756     }
 757     return ret;
 758 }
 759
 760 bitmask_transtbl iflag_tbl[] = {
 761         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 762         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 763         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 764         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 765         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 766         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 767         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 768         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 769         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 770         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 771         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 772         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 773         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 774         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 775         { 0, 0, 0, 0 }
 776 };
 777
 778 bitmask_transtbl oflag_tbl[] = {
 779         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 780         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 781         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 782         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 783         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 784         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 785         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 786         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 787         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 788         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 789         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 790         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 791         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 792         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 793         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 794         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 795         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 796         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 797         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 798         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 799         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 800         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 801         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 802         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 803         { 0, 0, 0, 0 }
 804 };
 805
 806 bitmask_transtbl cflag_tbl[] = {
 807         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 808         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 809         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 810         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 811         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 812         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
 813         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
 814         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
 815         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
 816         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
 817         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
 818         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
 819         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
 820         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
 821         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
 822         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
 823         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
 824         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
 825         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
 826         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
 827         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
 828         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
 829         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
 830         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
 831         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
 832         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
 833         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
 834         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
 835         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 836         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 837         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
 838         { 0, 0, 0, 0 }
 839 };
 840
 841 bitmask_transtbl lflag_tbl[] = {
 842         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
 843         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
 844         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
 845         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
 846         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
 847         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
 848         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
 849         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
 850         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
 851         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
 852         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
 853         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
 854         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
 855         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
 856         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
 857         { 0, 0, 0, 0 }
 858 };
 859
 860 static void target_to_host_termios (void *dst, const void *src)
 861 {
 862     struct host_termios *host = dst;
 863     const struct target_termios *target = src;
 864
 865     host->c_iflag =
 866         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
 867     host->c_oflag =
 868         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
 869     host->c_cflag =
 870         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
 871     host->c_lflag =
 872         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
 873     host->c_line = target->c_line;
 874
 875     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
 876     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
 877     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
 878     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
 879     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
 880     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
 881     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
 882     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
 883     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
 884     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
 885     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
 886     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
 887     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
 888     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
 889     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
 890     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
 891     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
 892 }
 893
 894 static void host_to_target_termios (void *dst, const void *src)
 895 {
 896     struct target_termios *target = dst;
 897     const struct host_termios *host = src;
 898
 899     target->c_iflag =
 900         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
 901     target->c_oflag =
 902         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
 903     target->c_cflag =
 904         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
 905     target->c_lflag =
 906         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
 907     target->c_line = host->c_line;
 908
 909     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
 910     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
 911     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
 912     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
 913     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
 914     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
 915     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
 916     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
 917     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
 918     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
 919     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
 920     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
 921     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
 922     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
 923     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
 924     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
 925     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
 926 }
 927
 928 StructEntry struct_termios_def = {
 929     .convert = { host_to_target_termios, target_to_host_termios },
 930     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
 931     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
 932 };
 933
 934 #ifdef TARGET_I386
 935
 936 /* NOTE: there is really one LDT for all the threads */
 937 uint8_t *ldt_table;
 938
 939 static int read_ldt(void *ptr, unsigned long bytecount)
 940 {
 941     int size;
 942
 943     if (!ldt_table)
 944         return 0;
 945     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
 946     if (size > bytecount)
 947         size = bytecount;
 948     memcpy(ptr, ldt_table, size);
 949     return size;
 950 }
 951
 952 /* XXX: add locking support */
 953 static int write_ldt(CPUX86State *env,
 954                      void *ptr, unsigned long bytecount, int oldmode)
 955 {
 956     struct target_modify_ldt_ldt_s ldt_info;
 957     int seg_32bit, contents, read_exec_only, limit_in_pages;
 958     int seg_not_present, useable;
 959     uint32_t *lp, entry_1, entry_2;
 960
 961     if (bytecount != sizeof(ldt_info))
 962         return -EINVAL;
 963     memcpy(&ldt_info, ptr, sizeof(ldt_info));
 964     tswap32s(&ldt_info.entry_number);
 965     tswapls((long *)&ldt_info.base_addr);
 966     tswap32s(&ldt_info.limit);
 967     tswap32s(&ldt_info.flags);
 968
 969     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
 970         return -EINVAL;
 971     seg_32bit = ldt_info.flags & 1;
 972     contents = (ldt_info.flags >> 1) & 3;
 973     read_exec_only = (ldt_info.flags >> 3) & 1;
 974     limit_in_pages = (ldt_info.flags >> 4) & 1;
 975     seg_not_present = (ldt_info.flags >> 5) & 1;
 976     useable = (ldt_info.flags >> 6) & 1;
 977
 978     if (contents == 3) {
 979         if (oldmode)
 980             return -EINVAL;
 981         if (seg_not_present == 0)
 982             return -EINVAL;
 983     }
 984     /* allocate the LDT */
 985     if (!ldt_table) {
 986         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
 987         if (!ldt_table)
 988             return -ENOMEM;
 989         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
 990         env->ldt.base = ldt_table;
 991         env->ldt.limit = 0xffff;
 992     }
 993
 994     /* NOTE: same code as Linux kernel */
 995     /* Allow LDTs to be cleared by the user. */
 996     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
 997         if (oldmode ||
 998             (contents == 0              &&
 999              read_exec_only == 1        &&
1000              seg_32bit == 0             &&
1001              limit_in_pages == 0        &&
1002              seg_not_present == 1       &&
1003              useable == 0 )) {
1004             entry_1 = 0;
1005             entry_2 = 0;
1006             goto install;
1007         }
1008     }
1009
1010     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1011         (ldt_info.limit & 0x0ffff);
1012     entry_2 = (ldt_info.base_addr & 0xff000000) |
1013         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1014         (ldt_info.limit & 0xf0000) |
1015         ((read_exec_only ^ 1) << 9) |
1016         (contents << 10) |
1017         ((seg_not_present ^ 1) << 15) |
1018         (seg_32bit << 22) |
1019         (limit_in_pages << 23) |
1020         0x7000;
1021     if (!oldmode)
1022         entry_2 |= (useable << 20);
1023
1024     /* Install the new entry ...  */
1025 install:
1026     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1027     lp[0] = tswap32(entry_1);
1028     lp[1] = tswap32(entry_2);
1029     return 0;
1030 }
1031
1032 /* specific and weird i386 syscalls */
1033 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1034 {
1035     int ret = -ENOSYS;
1036
1037     switch (func) {
1038     case 0:
1039         ret = read_ldt(ptr, bytecount);
1040         break;
1041     case 1:
1042         ret = write_ldt(env, ptr, bytecount, 1);
1043         break;
1044     case 0x11:
1045         ret = write_ldt(env, ptr, bytecount, 0);
1046         break;
1047     }
1048     return ret;
1049 }
1050
1051 /* vm86 emulation */
1052
1053 #define SAFE_MASK  (0xDD5)
1054
1055 int do_vm86(CPUX86State *env, long subfunction,
1056             struct target_vm86plus_struct * target_v86)
1057 {
1058     TaskState *ts = env->opaque;
1059     int ret;
1060
1061     switch (subfunction) {
1062     case TARGET_VM86_REQUEST_IRQ:
1063     case TARGET_VM86_FREE_IRQ:
1064     case TARGET_VM86_GET_IRQ_BITS:
1065     case TARGET_VM86_GET_AND_RESET_IRQ:
1066         gemu_log("qemu: unsupported vm86 subfunction (%ld)\n", subfunction);
1067         ret = -EINVAL;
1068         goto out;
1069     case TARGET_VM86_PLUS_INSTALL_CHECK:
1070         /* NOTE: on old vm86 stuff this will return the error
1071            from verify_area(), because the subfunction is
1072            interpreted as (invalid) address to vm86_struct.
1073            So the installation check works.
1074             */
1075         ret = 0;
1076         goto out;
1077     }
1078
1079     ts->target_v86 = target_v86;
1080     /* save current CPU regs */
1081     ts->vm86_saved_regs.eax = 0; /* default vm86 syscall return code */
1082     ts->vm86_saved_regs.ebx = env->regs[R_EBX];
1083     ts->vm86_saved_regs.ecx = env->regs[R_ECX];
1084     ts->vm86_saved_regs.edx = env->regs[R_EDX];
1085     ts->vm86_saved_regs.esi = env->regs[R_ESI];
1086     ts->vm86_saved_regs.edi = env->regs[R_EDI];
1087     ts->vm86_saved_regs.ebp = env->regs[R_EBP];
1088     ts->vm86_saved_regs.esp = env->regs[R_ESP];
1089     ts->vm86_saved_regs.eflags = env->eflags;
1090     ts->vm86_saved_regs.eip  = env->eip;
1091     ts->vm86_saved_regs.cs = env->segs[R_CS];
1092     ts->vm86_saved_regs.ss = env->segs[R_SS];
1093     ts->vm86_saved_regs.ds = env->segs[R_DS];
1094     ts->vm86_saved_regs.es = env->segs[R_ES];
1095     ts->vm86_saved_regs.fs = env->segs[R_FS];
1096     ts->vm86_saved_regs.gs = env->segs[R_GS];
1097
1098     /* build vm86 CPU state */
1099     env->eflags = (env->eflags & ~SAFE_MASK) |
1100         (tswap32(target_v86->regs.eflags) & SAFE_MASK) | VM_MASK;
1101
1102     env->regs[R_EBX] = tswap32(target_v86->regs.ebx);
1103     env->regs[R_ECX] = tswap32(target_v86->regs.ecx);
1104     env->regs[R_EDX] = tswap32(target_v86->regs.edx);
1105     env->regs[R_ESI] = tswap32(target_v86->regs.esi);
1106     env->regs[R_EDI] = tswap32(target_v86->regs.edi);
1107     env->regs[R_EBP] = tswap32(target_v86->regs.ebp);
1108     env->regs[R_ESP] = tswap32(target_v86->regs.esp);
1109     env->eip = tswap32(target_v86->regs.eip);
1110     cpu_x86_load_seg(env, R_CS, tswap16(target_v86->regs.cs));
1111     cpu_x86_load_seg(env, R_SS, tswap16(target_v86->regs.ss));
1112     cpu_x86_load_seg(env, R_DS, tswap16(target_v86->regs.ds));
1113     cpu_x86_load_seg(env, R_ES, tswap16(target_v86->regs.es));
1114     cpu_x86_load_seg(env, R_FS, tswap16(target_v86->regs.fs));
1115     cpu_x86_load_seg(env, R_GS, tswap16(target_v86->regs.gs));
1116     ret = tswap32(target_v86->regs.eax); /* eax will be restored at
1117                                             the end of the syscall */
1118     /* now the virtual CPU is ready for vm86 execution ! */
1119  out:
1120     return ret;
1121 }
1122
1123 /* this stack is the equivalent of the kernel stack associated with a
1124    thread/process */
1125 #define NEW_STACK_SIZE 8192
1126
1127 static int clone_func(void *arg)
1128 {
1129     CPUX86State *env = arg;
1130     cpu_loop(env);
1131     /* never exits */
1132     return 0;
1133 }
1134
1135 int do_fork(CPUX86State *env, unsigned int flags, unsigned long newsp)
1136 {
1137     int ret;
1138     TaskState *ts;
1139     uint8_t *new_stack;
1140     CPUX86State *new_env;
1141
1142     if (flags & CLONE_VM) {
1143         if (!newsp)
1144             newsp = env->regs[R_ESP];
1145         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1146         memset(ts, 0, sizeof(TaskState));
1147         new_stack = ts->stack;
1148         ts->used = 1;
1149         /* add in task state list */
1150         ts->next = first_task_state;
1151         first_task_state = ts;
1152         /* we create a new CPU instance. */
1153         new_env = cpu_x86_init();
1154         memcpy(new_env, env, sizeof(CPUX86State));
1155         new_env->regs[R_ESP] = newsp;
1156         new_env->regs[R_EAX] = 0;
1157         new_env->opaque = ts;
1158         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1159     } else {
1160         /* if no CLONE_VM, we consider it is a fork */
1161         if ((flags & ~CSIGNAL) != 0)
1162             return -EINVAL;
1163         ret = fork();
1164     }
1165     return ret;
1166 }
1167
1168 #endif
1169
1170 #define high2lowuid(x) (x)
1171 #define high2lowgid(x) (x)
1172 #define low2highuid(x) (x)
1173 #define low2highgid(x) (x)
1174
1175 void syscall_init(void)
1176 {
1177 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1178 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1179 #include "syscall_types.h"
1180 #undef STRUCT
1181 #undef STRUCT_SPECIAL
1182 }
1183
1184 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1185                 long arg4, long arg5, long arg6)
1186 {
1187     long ret;
1188     struct stat st;
1189     struct kernel_statfs *stfs;
1190
1191 #ifdef DEBUG
1192     gemu_log("syscall %d\n", num);
1193 #endif
1194     switch(num) {
1195     case TARGET_NR_exit:
1196 #ifdef HAVE_GPROF
1197         _mcleanup();
1198 #endif
1199         /* XXX: should free thread stack and CPU env */
1200         _exit(arg1);
1201         ret = 0; /* avoid warning */
1202         break;
1203     case TARGET_NR_read:
1204         ret = get_errno(read(arg1, (void *)arg2, arg3));
1205         break;
1206     case TARGET_NR_write:
1207         ret = get_errno(write(arg1, (void *)arg2, arg3));
1208         break;
1209     case TARGET_NR_open:
1210         ret = get_errno(open((const char *)arg1, arg2, arg3));
1211         break;
1212     case TARGET_NR_close:
1213         ret = get_errno(close(arg1));
1214         break;
1215     case TARGET_NR_brk:
1216         ret = do_brk((char *)arg1);
1217         break;
1218     case TARGET_NR_fork:
1219         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1220         break;
1221     case TARGET_NR_waitpid:
1222         {
1223             int *status = (int *)arg2;
1224             ret = get_errno(waitpid(arg1, status, arg3));
1225             if (!is_error(ret) && status)
1226                 tswapls((long *)&status);
1227         }
1228         break;
1229     case TARGET_NR_creat:
1230         ret = get_errno(creat((const char *)arg1, arg2));
1231         break;
1232     case TARGET_NR_link:
1233         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1234         break;
1235     case TARGET_NR_unlink:
1236         ret = get_errno(unlink((const char *)arg1));
1237         break;
1238     case TARGET_NR_execve:
1239         {
1240             char **argp, **envp;
1241             int argc, envc;
1242             uint32_t *p;
1243             char **q;
1244
1245             argc = 0;
1246             for (p = (void *)arg2; *p; p++)
1247                 argc++;
1248             envc = 0;
1249             for (p = (void *)arg3; *p; p++)
1250                 envc++;
1251
1252             argp = alloca((argc + 1) * sizeof(void *));
1253             envp = alloca((envc + 1) * sizeof(void *));
1254
1255             for (p = (void *)arg2, q = argp; *p; p++, q++)
1256                 *q = (void *)tswap32(*p);
1257             *q = NULL;
1258
1259             for (p = (void *)arg3, q = envp; *p; p++, q++)
1260                 *q = (void *)tswap32(*p);
1261             *q = NULL;
1262
1263             ret = get_errno(execve((const char *)arg1, argp, envp));
1264         }
1265         break;
1266     case TARGET_NR_chdir:
1267         ret = get_errno(chdir((const char *)arg1));
1268         break;
1269     case TARGET_NR_time:
1270         {
1271             int *time_ptr = (int *)arg1;
1272             ret = get_errno(time((time_t *)time_ptr));
1273             if (!is_error(ret) && time_ptr)
1274                 tswap32s(time_ptr);
1275         }
1276         break;
1277     case TARGET_NR_mknod:
1278         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1279         break;
1280     case TARGET_NR_chmod:
1281         ret = get_errno(chmod((const char *)arg1, arg2));
1282         break;
1283     case TARGET_NR_lchown:
1284         ret = get_errno(chown((const char *)arg1, arg2, arg3));
1285         break;
1286     case TARGET_NR_break:
1287         goto unimplemented;
1288     case TARGET_NR_oldstat:
1289         goto unimplemented;
1290     case TARGET_NR_lseek:
1291         ret = get_errno(lseek(arg1, arg2, arg3));
1292         break;
1293     case TARGET_NR_getpid:
1294         ret = get_errno(getpid());
1295         break;
1296     case TARGET_NR_mount:
1297         /* need to look at the data field */
1298         goto unimplemented;
1299     case TARGET_NR_umount:
1300         ret = get_errno(umount((const char *)arg1));
1301         break;
1302     case TARGET_NR_setuid:
1303         ret = get_errno(setuid(low2highuid(arg1)));
1304         break;
1305     case TARGET_NR_getuid:
1306         ret = get_errno(getuid());
1307         break;
1308     case TARGET_NR_stime:
1309         {
1310             int *time_ptr = (int *)arg1;
1311             if (time_ptr)
1312                 tswap32s(time_ptr);
1313             ret = get_errno(stime((time_t *)time_ptr));
1314         }
1315         break;
1316     case TARGET_NR_ptrace:
1317         goto unimplemented;
1318     case TARGET_NR_alarm:
1319         ret = alarm(arg1);
1320         break;
1321     case TARGET_NR_oldfstat:
1322         goto unimplemented;
1323     case TARGET_NR_pause:
1324         ret = get_errno(pause());
1325         break;
1326     case TARGET_NR_utime:
1327         goto unimplemented;
1328     case TARGET_NR_stty:
1329         goto unimplemented;
1330     case TARGET_NR_gtty:
1331         goto unimplemented;
1332     case TARGET_NR_access:
1333         ret = get_errno(access((const char *)arg1, arg2));
1334         break;
1335     case TARGET_NR_nice:
1336         ret = get_errno(nice(arg1));
1337         break;
1338     case TARGET_NR_ftime:
1339         goto unimplemented;
1340     case TARGET_NR_sync:
1341         sync();
1342         ret = 0;
1343         break;
1344     case TARGET_NR_kill:
1345         ret = get_errno(kill(arg1, arg2));
1346         break;
1347     case TARGET_NR_rename:
1348         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1349         break;
1350     case TARGET_NR_mkdir:
1351         ret = get_errno(mkdir((const char *)arg1, arg2));
1352         break;
1353     case TARGET_NR_rmdir:
1354         ret = get_errno(rmdir((const char *)arg1));
1355         break;
1356     case TARGET_NR_dup:
1357         ret = get_errno(dup(arg1));
1358         break;
1359     case TARGET_NR_pipe:
1360         {
1361             int *pipe_ptr = (int *)arg1;
1362             ret = get_errno(pipe(pipe_ptr));
1363             if (!is_error(ret)) {
1364                 tswap32s(&pipe_ptr[0]);
1365                 tswap32s(&pipe_ptr[1]);
1366             }
1367         }
1368         break;
1369     case TARGET_NR_times:
1370         goto unimplemented;
1371     case TARGET_NR_prof:
1372         goto unimplemented;
1373     case TARGET_NR_setgid:
1374         ret = get_errno(setgid(low2highgid(arg1)));
1375         break;
1376     case TARGET_NR_getgid:
1377         ret = get_errno(getgid());
1378         break;
1379     case TARGET_NR_signal:
1380         goto unimplemented;
1381     case TARGET_NR_geteuid:
1382         ret = get_errno(geteuid());
1383         break;
1384     case TARGET_NR_getegid:
1385         ret = get_errno(getegid());
1386         break;
1387     case TARGET_NR_acct:
1388         goto unimplemented;
1389     case TARGET_NR_umount2:
1390         ret = get_errno(umount2((const char *)arg1, arg2));
1391         break;
1392     case TARGET_NR_lock:
1393         goto unimplemented;
1394     case TARGET_NR_ioctl:
1395         ret = do_ioctl(arg1, arg2, arg3);
1396         break;
1397     case TARGET_NR_fcntl:
1398         switch(arg2) {
1399         case F_GETLK:
1400         case F_SETLK:
1401         case F_SETLKW:
1402             goto unimplemented;
1403         default:
1404             ret = get_errno(fcntl(arg1, arg2, arg3));
1405             break;
1406         }
1407         break;
1408     case TARGET_NR_mpx:
1409         goto unimplemented;
1410     case TARGET_NR_setpgid:
1411         ret = get_errno(setpgid(arg1, arg2));
1412         break;
1413     case TARGET_NR_ulimit:
1414         goto unimplemented;
1415     case TARGET_NR_oldolduname:
1416         goto unimplemented;
1417     case TARGET_NR_umask:
1418         ret = get_errno(umask(arg1));
1419         break;
1420     case TARGET_NR_chroot:
1421         ret = get_errno(chroot((const char *)arg1));
1422         break;
1423     case TARGET_NR_ustat:
1424         goto unimplemented;
1425     case TARGET_NR_dup2:
1426         ret = get_errno(dup2(arg1, arg2));
1427         break;
1428     case TARGET_NR_getppid:
1429         ret = get_errno(getppid());
1430         break;
1431     case TARGET_NR_getpgrp:
1432         ret = get_errno(getpgrp());
1433         break;
1434     case TARGET_NR_setsid:
1435         ret = get_errno(setsid());
1436         break;
1437     case TARGET_NR_sigaction:
1438         {
1439             struct target_old_sigaction *old_act = (void *)arg2;
1440             struct target_old_sigaction *old_oact = (void *)arg3;
1441             struct target_sigaction act, oact, *pact;
1442             if (old_act) {
1443                 act._sa_handler = old_act->_sa_handler;
1444                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1445                 act.sa_flags = old_act->sa_flags;
1446                 act.sa_restorer = old_act->sa_restorer;
1447                 pact = &act;
1448             } else {
1449                 pact = NULL;
1450             }
1451             ret = get_errno(do_sigaction(arg1, pact, &oact));
1452             if (!is_error(ret) && old_oact) {
1453                 old_oact->_sa_handler = oact._sa_handler;
1454                 old_oact->sa_mask = oact.sa_mask.sig[0];
1455                 old_oact->sa_flags = oact.sa_flags;
1456                 old_oact->sa_restorer = oact.sa_restorer;
1457             }
1458         }
1459         break;
1460     case TARGET_NR_rt_sigaction:
1461         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1462         break;
1463     case TARGET_NR_sgetmask:
1464         {
1465             sigset_t cur_set;
1466             target_ulong target_set;
1467             sigprocmask(0, NULL, &cur_set);
1468             host_to_target_old_sigset(&target_set, &cur_set);
1469             ret = target_set;
1470         }
1471         break;
1472     case TARGET_NR_ssetmask:
1473         {
1474             sigset_t set, oset, cur_set;
1475             target_ulong target_set = arg1;
1476             sigprocmask(0, NULL, &cur_set);
1477             target_to_host_old_sigset(&set, &target_set);
1478             sigorset(&set, &set, &cur_set);
1479             sigprocmask(SIG_SETMASK, &set, &oset);
1480             host_to_target_old_sigset(&target_set, &oset);
1481             ret = target_set;
1482         }
1483         break;
1484     case TARGET_NR_sigprocmask:
1485         {
1486             int how = arg1;
1487             sigset_t set, oldset, *set_ptr;
1488             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1489
1490             if (pset) {
1491                 switch(how) {
1492                 case TARGET_SIG_BLOCK:
1493                     how = SIG_BLOCK;
1494                     break;
1495                 case TARGET_SIG_UNBLOCK:
1496                     how = SIG_UNBLOCK;
1497                     break;
1498                 case TARGET_SIG_SETMASK:
1499                     how = SIG_SETMASK;
1500                     break;
1501                 default:
1502                     ret = -EINVAL;
1503                     goto fail;
1504                 }
1505                 target_to_host_old_sigset(&set, pset);
1506                 set_ptr = &set;
1507             } else {
1508                 how = 0;
1509                 set_ptr = NULL;
1510             }
1511             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1512             if (!is_error(ret) && poldset) {
1513                 host_to_target_old_sigset(poldset, &oldset);
1514             }
1515         }
1516         break;
1517     case TARGET_NR_rt_sigprocmask:
1518         {
1519             int how = arg1;
1520             sigset_t set, oldset, *set_ptr;
1521             target_sigset_t *pset = (void *)arg2;
1522             target_sigset_t *poldset = (void *)arg3;
1523
1524             if (pset) {
1525                 switch(how) {
1526                 case TARGET_SIG_BLOCK:
1527                     how = SIG_BLOCK;
1528                     break;
1529                 case TARGET_SIG_UNBLOCK:
1530                     how = SIG_UNBLOCK;
1531                     break;
1532                 case TARGET_SIG_SETMASK:
1533                     how = SIG_SETMASK;
1534                     break;
1535                 default:
1536                     ret = -EINVAL;
1537                     goto fail;
1538                 }
1539                 target_to_host_sigset(&set, pset);
1540                 set_ptr = &set;
1541             } else {
1542                 how = 0;
1543                 set_ptr = NULL;
1544             }
1545             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1546             if (!is_error(ret) && poldset) {
1547                 host_to_target_sigset(poldset, &oldset);
1548             }
1549         }
1550         break;
1551     case TARGET_NR_sigpending:
1552         {
1553             sigset_t set;
1554             ret = get_errno(sigpending(&set));
1555             if (!is_error(ret)) {
1556                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1557             }
1558         }
1559         break;
1560     case TARGET_NR_rt_sigpending:
1561         {
1562             sigset_t set;
1563             ret = get_errno(sigpending(&set));
1564             if (!is_error(ret)) {
1565                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1566             }
1567         }
1568         break;
1569     case TARGET_NR_sigsuspend:
1570         {
1571             sigset_t set;
1572             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1573             ret = get_errno(sigsuspend(&set));
1574         }
1575         break;
1576     case TARGET_NR_rt_sigsuspend:
1577         {
1578             sigset_t set;
1579             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1580             ret = get_errno(sigsuspend(&set));
1581         }
1582         break;
1583     case TARGET_NR_rt_sigtimedwait:
1584         {
1585             target_sigset_t *target_set = (void *)arg1;
1586             target_siginfo_t *target_uinfo = (void *)arg2;
1587             struct target_timespec *target_uts = (void *)arg3;
1588             sigset_t set;
1589             struct timespec uts, *puts;
1590             siginfo_t uinfo;
1591
1592             target_to_host_sigset(&set, target_set);
1593             if (target_uts) {
1594                 puts = &uts;
1595                 puts->tv_sec = tswapl(target_uts->tv_sec);
1596                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1597             } else {
1598                 puts = NULL;
1599             }
1600             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1601             if (!is_error(ret) && target_uinfo) {
1602                 host_to_target_siginfo(target_uinfo, &uinfo);
1603             }
1604         }
1605         break;
1606     case TARGET_NR_rt_sigqueueinfo:
1607         {
1608             siginfo_t uinfo;
1609             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1610             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1611         }
1612         break;
1613     case TARGET_NR_sigreturn:
1614         /* NOTE: ret is eax, so not transcoding must be done */
1615         ret = do_sigreturn(cpu_env);
1616         break;
1617     case TARGET_NR_rt_sigreturn:
1618         /* NOTE: ret is eax, so not transcoding must be done */
1619         ret = do_rt_sigreturn(cpu_env);
1620         break;
1621     case TARGET_NR_setreuid:
1622         ret = get_errno(setreuid(arg1, arg2));
1623         break;
1624     case TARGET_NR_setregid:
1625         ret = get_errno(setregid(arg1, arg2));
1626         break;
1627     case TARGET_NR_sethostname:
1628         ret = get_errno(sethostname((const char *)arg1, arg2));
1629         break;
1630     case TARGET_NR_setrlimit:
1631         {
1632             /* XXX: convert resource ? */
1633             int resource = arg1;
1634             struct target_rlimit *target_rlim = (void *)arg2;
1635             struct rlimit rlim;
1636             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1637             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1638             ret = get_errno(setrlimit(resource, &rlim));
1639         }
1640         break;
1641     case TARGET_NR_getrlimit:
1642         {
1643             /* XXX: convert resource ? */
1644             int resource = arg1;
1645             struct target_rlimit *target_rlim = (void *)arg2;
1646             struct rlimit rlim;
1647
1648             ret = get_errno(getrlimit(resource, &rlim));
1649             if (!is_error(ret)) {
1650                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1651                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1652             }
1653         }
1654         break;
1655     case TARGET_NR_getrusage:
1656         goto unimplemented;
1657     case TARGET_NR_gettimeofday:
1658         {
1659             struct target_timeval *target_tv = (void *)arg1;
1660             struct timeval tv;
1661             ret = get_errno(gettimeofday(&tv, NULL));
1662             if (!is_error(ret)) {
1663                 host_to_target_timeval(target_tv, &tv);
1664             }
1665         }
1666         break;
1667     case TARGET_NR_settimeofday:
1668         {
1669             struct target_timeval *target_tv = (void *)arg1;
1670             struct timeval tv;
1671             target_to_host_timeval(&tv, target_tv);
1672             ret = get_errno(settimeofday(&tv, NULL));
1673         }
1674         break;
1675     case TARGET_NR_getgroups:
1676         goto unimplemented;
1677     case TARGET_NR_setgroups:
1678         goto unimplemented;
1679     case TARGET_NR_select:
1680         goto unimplemented;
1681     case TARGET_NR_symlink:
1682         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1683         break;
1684     case TARGET_NR_oldlstat:
1685         goto unimplemented;
1686     case TARGET_NR_readlink:
1687         ret = get_errno(readlink((const char *)arg1, (char *)arg2, arg3));
1688         break;
1689     case TARGET_NR_uselib:
1690         goto unimplemented;
1691     case TARGET_NR_swapon:
1692         ret = get_errno(swapon((const char *)arg1, arg2));
1693         break;
1694     case TARGET_NR_reboot:
1695         goto unimplemented;
1696     case TARGET_NR_readdir:
1697         goto unimplemented;
1698 #ifdef TARGET_I386
1699     case TARGET_NR_mmap:
1700         {
1701             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
1702             vptr = (uint32_t *)arg1;
1703             v1 = tswap32(vptr[0]);
1704             v2 = tswap32(vptr[1]);
1705             v3 = tswap32(vptr[2]);
1706             v4 = tswap32(vptr[3]);
1707             v5 = tswap32(vptr[4]);
1708             v6 = tswap32(vptr[5]);
1709             ret = get_errno((long)mmap((void *)v1, v2, v3, v4, v5, v6));
1710         }
1711         break;
1712 #endif
1713 #ifdef TARGET_I386
1714     case TARGET_NR_mmap2:
1715 #else
1716     case TARGET_NR_mmap:
1717 #endif
1718         ret = get_errno((long)mmap((void *)arg1, arg2, arg3, arg4, arg5, arg6));
1719         break;
1720     case TARGET_NR_munmap:
1721         ret = get_errno(munmap((void *)arg1, arg2));
1722         break;
1723     case TARGET_NR_mprotect:
1724         ret = get_errno(mprotect((void *)arg1, arg2, arg3));
1725         break;
1726     case TARGET_NR_mremap:
1727         ret = get_errno((long)mremap((void *)arg1, arg2, arg3, arg4));
1728         break;
1729     case TARGET_NR_msync:
1730         ret = get_errno(msync((void *)arg1, arg2, arg3));
1731         break;
1732     case TARGET_NR_mlock:
1733         ret = get_errno(mlock((void *)arg1, arg2));
1734         break;
1735     case TARGET_NR_munlock:
1736         ret = get_errno(munlock((void *)arg1, arg2));
1737         break;
1738     case TARGET_NR_mlockall:
1739         ret = get_errno(mlockall(arg1));
1740         break;
1741     case TARGET_NR_munlockall:
1742         ret = get_errno(munlockall());
1743         break;
1744     case TARGET_NR_truncate:
1745         ret = get_errno(truncate((const char *)arg1, arg2));
1746         break;
1747     case TARGET_NR_ftruncate:
1748         ret = get_errno(ftruncate(arg1, arg2));
1749         break;
1750     case TARGET_NR_fchmod:
1751         ret = get_errno(fchmod(arg1, arg2));
1752         break;
1753     case TARGET_NR_fchown:
1754         ret = get_errno(fchown(arg1, arg2, arg3));
1755         break;
1756     case TARGET_NR_getpriority:
1757         ret = get_errno(getpriority(arg1, arg2));
1758         break;
1759     case TARGET_NR_setpriority:
1760         ret = get_errno(setpriority(arg1, arg2, arg3));
1761         break;
1762     case TARGET_NR_profil:
1763         goto unimplemented;
1764     case TARGET_NR_statfs:
1765         stfs = (void *)arg2;
1766         ret = get_errno(sys_statfs((const char *)arg1, stfs));
1767     convert_statfs:
1768         if (!is_error(ret)) {
1769             tswap32s(&stfs->f_type);
1770             tswap32s(&stfs->f_bsize);
1771             tswap32s(&stfs->f_blocks);
1772             tswap32s(&stfs->f_bfree);
1773             tswap32s(&stfs->f_bavail);
1774             tswap32s(&stfs->f_files);
1775             tswap32s(&stfs->f_ffree);
1776             tswap32s(&stfs->f_fsid.val[0]);
1777             tswap32s(&stfs->f_fsid.val[1]);
1778             tswap32s(&stfs->f_namelen);
1779         }
1780         break;
1781     case TARGET_NR_fstatfs:
1782         stfs = (void *)arg2;
1783         ret = get_errno(sys_fstatfs(arg1, stfs));
1784         goto convert_statfs;
1785     case TARGET_NR_ioperm:
1786         goto unimplemented;
1787     case TARGET_NR_socketcall:
1788         ret = do_socketcall(arg1, (int32_t *)arg2);
1789         break;
1790     case TARGET_NR_syslog:
1791         goto unimplemented;
1792     case TARGET_NR_setitimer:
1793         {
1794             struct target_itimerval *target_value = (void *)arg2;
1795             struct target_itimerval *target_ovalue = (void *)arg3;
1796             struct itimerval value, ovalue, *pvalue;
1797
1798             if (target_value) {
1799                 pvalue = &value;
1800                 target_to_host_timeval(&pvalue->it_interval,
1801                                        &target_value->it_interval);
1802                 target_to_host_timeval(&pvalue->it_value,
1803                                        &target_value->it_value);
1804             } else {
1805                 pvalue = NULL;
1806             }
1807             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
1808             if (!is_error(ret) && target_ovalue) {
1809                 host_to_target_timeval(&target_ovalue->it_interval,
1810                                        &ovalue.it_interval);
1811                 host_to_target_timeval(&target_ovalue->it_value,
1812                                        &ovalue.it_value);
1813             }
1814         }
1815         break;
1816     case TARGET_NR_getitimer:
1817         {
1818             struct target_itimerval *target_value = (void *)arg2;
1819             struct itimerval value;
1820
1821             ret = get_errno(getitimer(arg1, &value));
1822             if (!is_error(ret) && target_value) {
1823                 host_to_target_timeval(&target_value->it_interval,
1824                                        &value.it_interval);
1825                 host_to_target_timeval(&target_value->it_value,
1826                                        &value.it_value);
1827             }
1828         }
1829         break;
1830     case TARGET_NR_stat:
1831         ret = get_errno(stat((const char *)arg1, &st));
1832         goto do_stat;
1833     case TARGET_NR_lstat:
1834         ret = get_errno(lstat((const char *)arg1, &st));
1835         goto do_stat;
1836     case TARGET_NR_fstat:
1837         {
1838             ret = get_errno(fstat(arg1, &st));
1839         do_stat:
1840             if (!is_error(ret)) {
1841                 struct target_stat *target_st = (void *)arg2;
1842                 target_st->st_dev = tswap16(st.st_dev);
1843                 target_st->st_ino = tswapl(st.st_ino);
1844                 target_st->st_mode = tswap16(st.st_mode);
1845                 target_st->st_nlink = tswap16(st.st_nlink);
1846                 target_st->st_uid = tswap16(st.st_uid);
1847                 target_st->st_gid = tswap16(st.st_gid);
1848                 target_st->st_rdev = tswap16(st.st_rdev);
1849                 target_st->st_size = tswapl(st.st_size);
1850                 target_st->st_blksize = tswapl(st.st_blksize);
1851                 target_st->st_blocks = tswapl(st.st_blocks);
1852                 target_st->target_st_atime = tswapl(st.st_atime);
1853                 target_st->target_st_mtime = tswapl(st.st_mtime);
1854                 target_st->target_st_ctime = tswapl(st.st_ctime);
1855             }
1856         }
1857         break;
1858     case TARGET_NR_olduname:
1859         goto unimplemented;
1860     case TARGET_NR_iopl:
1861         goto unimplemented;
1862     case TARGET_NR_vhangup:
1863         ret = get_errno(vhangup());
1864         break;
1865     case TARGET_NR_idle:
1866         goto unimplemented;
1867     case TARGET_NR_wait4:
1868         {
1869             int status;
1870             target_long *status_ptr = (void *)arg2;
1871             struct rusage rusage, *rusage_ptr;
1872             struct target_rusage *target_rusage = (void *)arg4;
1873             if (target_rusage)
1874                 rusage_ptr = &rusage;
1875             else
1876                 rusage_ptr = NULL;
1877             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
1878             if (!is_error(ret)) {
1879                 if (status_ptr)
1880                     *status_ptr = tswap32(status);
1881                 if (target_rusage) {
1882                     target_rusage->ru_utime.tv_sec = tswapl(rusage.ru_utime.tv_sec);
1883                     target_rusage->ru_utime.tv_usec = tswapl(rusage.ru_utime.tv_usec);
1884                     target_rusage->ru_stime.tv_sec = tswapl(rusage.ru_stime.tv_sec);
1885                     target_rusage->ru_stime.tv_usec = tswapl(rusage.ru_stime.tv_usec);
1886                     target_rusage->ru_maxrss = tswapl(rusage.ru_maxrss);
1887                     target_rusage->ru_ixrss = tswapl(rusage.ru_ixrss);
1888                     target_rusage->ru_idrss = tswapl(rusage.ru_idrss);
1889                     target_rusage->ru_isrss = tswapl(rusage.ru_isrss);
1890                     target_rusage->ru_minflt = tswapl(rusage.ru_minflt);
1891                     target_rusage->ru_majflt = tswapl(rusage.ru_majflt);
1892                     target_rusage->ru_nswap = tswapl(rusage.ru_nswap);
1893                     target_rusage->ru_inblock = tswapl(rusage.ru_inblock);
1894                     target_rusage->ru_oublock = tswapl(rusage.ru_oublock);
1895                     target_rusage->ru_msgsnd = tswapl(rusage.ru_msgsnd);
1896                     target_rusage->ru_msgrcv = tswapl(rusage.ru_msgrcv);
1897                     target_rusage->ru_nsignals = tswapl(rusage.ru_nsignals);
1898                     target_rusage->ru_nvcsw = tswapl(rusage.ru_nvcsw);
1899                     target_rusage->ru_nivcsw = tswapl(rusage.ru_nivcsw);
1900                 }
1901             }
1902         }
1903         break;
1904     case TARGET_NR_swapoff:
1905         ret = get_errno(swapoff((const char *)arg1));
1906         break;
1907     case TARGET_NR_sysinfo:
1908         goto unimplemented;
1909     case TARGET_NR_ipc:
1910         goto unimplemented;
1911     case TARGET_NR_fsync:
1912         ret = get_errno(fsync(arg1));
1913         break;
1914     case TARGET_NR_clone:
1915         ret = get_errno(do_fork(cpu_env, arg1, arg2));
1916         break;
1917     case TARGET_NR_setdomainname:
1918         ret = get_errno(setdomainname((const char *)arg1, arg2));
1919         break;
1920     case TARGET_NR_uname:
1921         /* no need to transcode because we use the linux syscall */
1922         ret = get_errno(sys_uname((struct new_utsname *)arg1));
1923         break;
1924 #ifdef TARGET_I386
1925     case TARGET_NR_modify_ldt:
1926         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
1927         break;
1928     case TARGET_NR_vm86old:
1929         goto unimplemented;
1930     case TARGET_NR_vm86:
1931         ret = do_vm86(cpu_env, arg1, (void *)arg2);
1932         break;
1933 #endif
1934     case TARGET_NR_adjtimex:
1935         goto unimplemented;
1936     case TARGET_NR_create_module:
1937     case TARGET_NR_init_module:
1938     case TARGET_NR_delete_module:
1939     case TARGET_NR_get_kernel_syms:
1940         goto unimplemented;
1941     case TARGET_NR_quotactl:
1942         goto unimplemented;
1943     case TARGET_NR_getpgid:
1944         ret = get_errno(getpgid(arg1));
1945         break;
1946     case TARGET_NR_fchdir:
1947         ret = get_errno(fchdir(arg1));
1948         break;
1949     case TARGET_NR_bdflush:
1950         goto unimplemented;
1951     case TARGET_NR_sysfs:
1952         goto unimplemented;
1953     case TARGET_NR_personality:
1954         ret = get_errno(personality(arg1));
1955         break;
1956     case TARGET_NR_afs_syscall:
1957         goto unimplemented;
1958     case TARGET_NR_setfsuid:
1959         ret = get_errno(setfsuid(arg1));
1960         break;
1961     case TARGET_NR_setfsgid:
1962         ret = get_errno(setfsgid(arg1));
1963         break;
1964     case TARGET_NR__llseek:
1965         {
1966             int64_t res;
1967             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
1968             *(int64_t *)arg4 = tswap64(res);
1969         }
1970         break;
1971     case TARGET_NR_getdents:
1972 #if TARGET_LONG_SIZE != 4
1973 #error not supported
1974 #endif
1975         {
1976             struct dirent *dirp = (void *)arg2;
1977             long count = arg3;
1978
1979             ret = get_errno(sys_getdents(arg1, dirp, count));
1980             if (!is_error(ret)) {
1981                 struct dirent *de;
1982                 int len = ret;
1983                 int reclen;
1984                 de = dirp;
1985                 while (len > 0) {
1986                     reclen = de->d_reclen;
1987                     if (reclen > len)
1988                         break;
1989                     de->d_reclen = tswap16(reclen);
1990                     tswapls(&de->d_ino);
1991                     tswapls(&de->d_off);
1992                     de = (struct dirent *)((char *)de + reclen);
1993                     len -= reclen;
1994                 }
1995             }
1996         }
1997         break;
1998     case TARGET_NR_getdents64:
1999         {
2000             struct dirent64 *dirp = (void *)arg2;
2001             long count = arg3;
2002             ret = get_errno(sys_getdents64(arg1, dirp, count));
2003             if (!is_error(ret)) {
2004                 struct dirent64 *de;
2005                 int len = ret;
2006                 int reclen;
2007                 de = dirp;
2008                 while (len > 0) {
2009                     reclen = de->d_reclen;
2010                     if (reclen > len)
2011                         break;
2012                     de->d_reclen = tswap16(reclen);
2013                     tswap64s(&de->d_ino);
2014                     tswap64s(&de->d_off);
2015                     de = (struct dirent64 *)((char *)de + reclen);
2016                     len -= reclen;
2017                 }
2018             }
2019         }
2020         break;
2021     case TARGET_NR__newselect:
2022         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2023                         (void *)arg5);
2024         break;
2025     case TARGET_NR_poll:
2026         {
2027             struct target_pollfd *target_pfd = (void *)arg1;
2028             unsigned int nfds = arg2;
2029             int timeout = arg3;
2030             struct pollfd *pfd;
2031             unsigned int i;
2032
2033             pfd = alloca(sizeof(struct pollfd) * nfds);
2034             for(i = 0; i < nfds; i++) {
2035                 pfd[i].fd = tswap32(target_pfd[i].fd);
2036                 pfd[i].events = tswap16(target_pfd[i].events);
2037             }
2038             ret = get_errno(poll(pfd, nfds, timeout));
2039             if (!is_error(ret)) {
2040                 for(i = 0; i < nfds; i++) {
2041                     target_pfd[i].revents = tswap16(pfd[i].revents);
2042                 }
2043             }
2044         }
2045         break;
2046     case TARGET_NR_flock:
2047         /* NOTE: the flock constant seems to be the same for every
2048            Linux platform */
2049         ret = get_errno(flock(arg1, arg2));
2050         break;
2051     case TARGET_NR_readv:
2052         {
2053             int count = arg3;
2054             int i;
2055             struct iovec *vec;
2056             struct target_iovec *target_vec = (void *)arg2;
2057
2058             vec = alloca(count * sizeof(struct iovec));
2059             for(i = 0;i < count; i++) {
2060                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2061                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2062             }
2063             ret = get_errno(readv(arg1, vec, count));
2064         }
2065         break;
2066     case TARGET_NR_writev:
2067         {
2068             int count = arg3;
2069             int i;
2070             struct iovec *vec;
2071             struct target_iovec *target_vec = (void *)arg2;
2072
2073             vec = alloca(count * sizeof(struct iovec));
2074             for(i = 0;i < count; i++) {
2075                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2076                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2077             }
2078             ret = get_errno(writev(arg1, vec, count));
2079         }
2080         break;
2081     case TARGET_NR_getsid:
2082         ret = get_errno(getsid(arg1));
2083         break;
2084     case TARGET_NR_fdatasync:
2085         ret = get_errno(fdatasync(arg1));
2086         break;
2087     case TARGET_NR__sysctl:
2088         goto unimplemented;
2089     case TARGET_NR_sched_setparam:
2090         {
2091             struct sched_param *target_schp = (void *)arg2;
2092             struct sched_param schp;
2093             schp.sched_priority = tswap32(target_schp->sched_priority);
2094             ret = get_errno(sched_setparam(arg1, &schp));
2095         }
2096         break;
2097     case TARGET_NR_sched_getparam:
2098         {
2099             struct sched_param *target_schp = (void *)arg2;
2100             struct sched_param schp;
2101             ret = get_errno(sched_getparam(arg1, &schp));
2102             if (!is_error(ret)) {
2103                 target_schp->sched_priority = tswap32(schp.sched_priority);
2104             }
2105         }
2106         break;
2107     case TARGET_NR_sched_setscheduler:
2108         {
2109             struct sched_param *target_schp = (void *)arg3;
2110             struct sched_param schp;
2111             schp.sched_priority = tswap32(target_schp->sched_priority);
2112             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2113         }
2114         break;
2115     case TARGET_NR_sched_getscheduler:
2116         ret = get_errno(sched_getscheduler(arg1));
2117         break;
2118     case TARGET_NR_sched_yield:
2119         ret = get_errno(sched_yield());
2120         break;
2121     case TARGET_NR_sched_get_priority_max:
2122         ret = get_errno(sched_get_priority_max(arg1));
2123         break;
2124     case TARGET_NR_sched_get_priority_min:
2125         ret = get_errno(sched_get_priority_min(arg1));
2126         break;
2127     case TARGET_NR_sched_rr_get_interval:
2128         {
2129             struct target_timespec *target_ts = (void *)arg2;
2130             struct timespec ts;
2131             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2132             if (!is_error(ret)) {
2133                 target_ts->tv_sec = tswapl(ts.tv_sec);
2134                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2135             }
2136         }
2137         break;
2138     case TARGET_NR_nanosleep:
2139         {
2140             struct target_timespec *target_req = (void *)arg1;
2141             struct target_timespec *target_rem = (void *)arg2;
2142             struct timespec req, rem;
2143             req.tv_sec = tswapl(target_req->tv_sec);
2144             req.tv_nsec = tswapl(target_req->tv_nsec);
2145             ret = get_errno(nanosleep(&req, &rem));
2146             if (target_rem) {
2147                 target_rem->tv_sec = tswapl(rem.tv_sec);
2148                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2149             }
2150         }
2151         break;
2152     case TARGET_NR_setresuid:
2153         ret = get_errno(setresuid(low2highuid(arg1),
2154                                   low2highuid(arg2),
2155                                   low2highuid(arg3)));
2156         break;
2157     case TARGET_NR_getresuid:
2158         {
2159             int ruid, euid, suid;
2160             ret = get_errno(getresuid(&ruid, &euid, &suid));
2161             if (!is_error(ret)) {
2162                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2163                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2164                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2165             }
2166         }
2167         break;
2168     case TARGET_NR_setresgid:
2169         ret = get_errno(setresgid(low2highgid(arg1),
2170                                   low2highgid(arg2),
2171                                   low2highgid(arg3)));
2172         break;
2173     case TARGET_NR_getresgid:
2174         {
2175             int rgid, egid, sgid;
2176             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2177             if (!is_error(ret)) {
2178                 *(uint16_t *)arg1 = high2lowgid(tswap16(rgid));
2179                 *(uint16_t *)arg2 = high2lowgid(tswap16(egid));
2180                 *(uint16_t *)arg3 = high2lowgid(tswap16(sgid));
2181             }
2182         }
2183         break;
2184     case TARGET_NR_query_module:
2185         goto unimplemented;
2186     case TARGET_NR_nfsservctl:
2187         goto unimplemented;
2188     case TARGET_NR_prctl:
2189         goto unimplemented;
2190     case TARGET_NR_pread:
2191         goto unimplemented;
2192     case TARGET_NR_pwrite:
2193         goto unimplemented;
2194     case TARGET_NR_chown:
2195         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2196         break;
2197     case TARGET_NR_getcwd:
2198         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2199         break;
2200     case TARGET_NR_capget:
2201         goto unimplemented;
2202     case TARGET_NR_capset:
2203         goto unimplemented;
2204     case TARGET_NR_sigaltstack:
2205         goto unimplemented;
2206     case TARGET_NR_sendfile:
2207         goto unimplemented;
2208     case TARGET_NR_getpmsg:
2209         goto unimplemented;
2210     case TARGET_NR_putpmsg:
2211         goto unimplemented;
2212     case TARGET_NR_vfork:
2213         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2214         break;
2215     case TARGET_NR_ugetrlimit:
2216         goto unimplemented;
2217     case TARGET_NR_truncate64:
2218         goto unimplemented;
2219     case TARGET_NR_ftruncate64:
2220         goto unimplemented;
2221     case TARGET_NR_stat64:
2222         ret = get_errno(stat((const char *)arg1, &st));
2223         goto do_stat64;
2224     case TARGET_NR_lstat64:
2225         ret = get_errno(lstat((const char *)arg1, &st));
2226         goto do_stat64;
2227     case TARGET_NR_fstat64:
2228         {
2229             ret = get_errno(fstat(arg1, &st));
2230         do_stat64:
2231             if (!is_error(ret)) {
2232                 struct target_stat64 *target_st = (void *)arg2;
2233                 target_st->st_dev = tswap16(st.st_dev);
2234                 target_st->st_ino = tswapl(st.st_ino);
2235                 target_st->st_mode = tswap16(st.st_mode);
2236                 target_st->st_nlink = tswap16(st.st_nlink);
2237                 target_st->st_uid = tswap16(st.st_uid);
2238                 target_st->st_gid = tswap16(st.st_gid);
2239                 target_st->st_rdev = tswap16(st.st_rdev);
2240                 /* XXX: better use of kernel struct */
2241                 target_st->st_size = tswapl(st.st_size);
2242                 target_st->st_blksize = tswapl(st.st_blksize);
2243                 target_st->st_blocks = tswapl(st.st_blocks);
2244                 target_st->target_st_atime = tswapl(st.st_atime);
2245                 target_st->target_st_mtime = tswapl(st.st_mtime);
2246                 target_st->target_st_ctime = tswapl(st.st_ctime);
2247             }
2248         }
2249         break;
2250
2251     case TARGET_NR_lchown32:
2252         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2253         break;
2254     case TARGET_NR_getuid32:
2255         ret = get_errno(getuid());
2256         break;
2257     case TARGET_NR_getgid32:
2258         ret = get_errno(getgid());
2259         break;
2260     case TARGET_NR_geteuid32:
2261         ret = get_errno(geteuid());
2262         break;
2263     case TARGET_NR_getegid32:
2264         ret = get_errno(getegid());
2265         break;
2266     case TARGET_NR_setreuid32:
2267         ret = get_errno(setreuid(arg1, arg2));
2268         break;
2269     case TARGET_NR_setregid32:
2270         ret = get_errno(setregid(arg1, arg2));
2271         break;
2272     case TARGET_NR_getgroups32:
2273         goto unimplemented;
2274     case TARGET_NR_setgroups32:
2275         goto unimplemented;
2276     case TARGET_NR_fchown32:
2277         ret = get_errno(fchown(arg1, arg2, arg3));
2278         break;
2279     case TARGET_NR_setresuid32:
2280         ret = get_errno(setresuid(arg1, arg2, arg3));
2281         break;
2282     case TARGET_NR_getresuid32:
2283         {
2284             int ruid, euid, suid;
2285             ret = get_errno(getresuid(&ruid, &euid, &suid));
2286             if (!is_error(ret)) {
2287                 *(uint32_t *)arg1 = tswap32(ruid);
2288                 *(uint32_t *)arg2 = tswap32(euid);
2289                 *(uint32_t *)arg3 = tswap32(suid);
2290             }
2291         }
2292         break;
2293     case TARGET_NR_setresgid32:
2294         ret = get_errno(setresgid(arg1, arg2, arg3));
2295         break;
2296     case TARGET_NR_getresgid32:
2297         {
2298             int rgid, egid, sgid;
2299             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2300             if (!is_error(ret)) {
2301                 *(uint32_t *)arg1 = tswap32(rgid);
2302                 *(uint32_t *)arg2 = tswap32(egid);
2303                 *(uint32_t *)arg3 = tswap32(sgid);
2304             }
2305         }
2306         break;
2307     case TARGET_NR_chown32:
2308         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2309         break;
2310     case TARGET_NR_setuid32:
2311         ret = get_errno(setuid(arg1));
2312         break;
2313     case TARGET_NR_setgid32:
2314         ret = get_errno(setgid(arg1));
2315         break;
2316     case TARGET_NR_setfsuid32:
2317         ret = get_errno(setfsuid(arg1));
2318         break;
2319     case TARGET_NR_setfsgid32:
2320         ret = get_errno(setfsgid(arg1));
2321         break;
2322     case TARGET_NR_pivot_root:
2323         goto unimplemented;
2324     case TARGET_NR_mincore:
2325         goto unimplemented;
2326     case TARGET_NR_madvise:
2327         goto unimplemented;
2328 #if TARGET_LONG_BITS == 32
2329     case TARGET_NR_fcntl64:
2330         switch(arg2) {
2331         case F_GETLK64:
2332         case F_SETLK64:
2333         case F_SETLKW64:
2334             goto unimplemented;
2335         default:
2336             ret = get_errno(fcntl(arg1, arg2, arg3));
2337             break;
2338         }
2339         break;
2340 #endif
2341     case TARGET_NR_security:
2342         goto unimplemented;
2343     case TARGET_NR_gettid:
2344         ret = get_errno(gettid());
2345         break;
2346     case TARGET_NR_readahead:
2347         goto unimplemented;
2348     case TARGET_NR_setxattr:
2349     case TARGET_NR_lsetxattr:
2350     case TARGET_NR_fsetxattr:
2351     case TARGET_NR_getxattr:
2352     case TARGET_NR_lgetxattr:
2353     case TARGET_NR_fgetxattr:
2354     case TARGET_NR_listxattr:
2355     case TARGET_NR_llistxattr:
2356     case TARGET_NR_flistxattr:
2357     case TARGET_NR_removexattr:
2358     case TARGET_NR_lremovexattr:
2359     case TARGET_NR_fremovexattr:
2360         goto unimplemented_nowarn;
2361     case TARGET_NR_set_thread_area:
2362     case TARGET_NR_get_thread_area:
2363         goto unimplemented_nowarn;
2364     default:
2365     unimplemented:
2366         gemu_log("qemu: Unsupported syscall: %d\n", num);
2367     unimplemented_nowarn:
2368         ret = -ENOSYS;
2369         break;
2370     }
2371  fail:
2372     return ret;
2373 }
2374