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 <elf.h>
  24 #include <endian.h>
  25 #include <errno.h>
  26 #include <unistd.h>
  27 #include <fcntl.h>
  28 #include <sys/types.h>
  29 #include <sys/wait.h>
  30 #include <sys/time.h>
  31 #include <sys/stat.h>
  32 #include <sys/mount.h>
  33 #include <sys/resource.h>
  34 #include <sys/mman.h>
  35 #include <sys/swap.h>
  36 #include <signal.h>
  37 #include <sched.h>
  38 #include <sys/socket.h>
  39 #include <sys/uio.h>
  40 //#include <sys/user.h>
  41
  42 #define termios host_termios
  43 #define winsize host_winsize
  44 #define termio host_termio
  45
  46 #include <linux/termios.h>
  47 #include <linux/unistd.h>
  48 #include <linux/utsname.h>
  49 #include <linux/cdrom.h>
  50 #include <linux/hdreg.h>
  51 #include <linux/soundcard.h>
  52
  53 #include "gemu.h"
  54
  55 //#define DEBUG
  56
  57 #ifndef PAGE_SIZE
  58 #define PAGE_SIZE 4096
  59 #define PAGE_MASK ~(PAGE_SIZE - 1)
  60 #endif
  61
  62 struct dirent {
  63         long            d_ino;
  64         long            d_off;
  65         unsigned short  d_reclen;
  66         char            d_name[256]; /* We must not include limits.h! */
  67 };
  68
  69 #include "syscall_defs.h"
  70
  71 #ifdef TARGET_I386
  72 #include "syscall-i386.h"
  73 #endif
  74
  75 #define __NR_sys_uname __NR_uname
  76 #define __NR_sys_getcwd1 __NR_getcwd
  77 #define __NR_sys_statfs __NR_statfs
  78 #define __NR_sys_fstatfs __NR_fstatfs
  79 #define __NR_sys_getdents __NR_getdents
  80
  81 #ifdef __NR_gettid
  82 _syscall0(int, gettid)
  83 #else
  84 static int gettid(void) {
  85     return -ENOSYS;
  86 }
  87 #endif
  88 _syscall1(int,sys_uname,struct new_utsname *,buf)
  89 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
  90 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
  91 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
  92           loff_t *, res, uint, wh);
  93 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
  94 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
  95
  96 static inline long get_errno(long ret)
  97 {
  98     if (ret == -1)
  99         return -errno;
 100     else
 101         return ret;
 102 }
 103
 104 static inline int is_error(long ret)
 105 {
 106     return (unsigned long)ret >= (unsigned long)(-4096);
 107 }
 108
 109 static char *target_brk;
 110 static char *target_original_brk;
 111
 112 void target_set_brk(char *new_brk)
 113 {
 114     target_brk = new_brk;
 115     target_original_brk = new_brk;
 116 }
 117
 118 static long do_brk(char *new_brk)
 119 {
 120     char *brk_page;
 121     long mapped_addr;
 122     int new_alloc_size;
 123
 124     if (!new_brk)
 125         return (long)target_brk;
 126     if (new_brk < target_original_brk)
 127         return -ENOMEM;
 128
 129     brk_page = (char *)(((unsigned long)target_brk + PAGE_SIZE - 1) & PAGE_MASK);
 130
 131     /* If the new brk is less than this, set it and we're done... */
 132     if (new_brk < brk_page) {
 133         target_brk = new_brk;
 134         return (long)target_brk;
 135     }
 136
 137     /* We need to allocate more memory after the brk... */
 138     new_alloc_size = ((new_brk - brk_page + 1)+(PAGE_SIZE-1)) & PAGE_MASK;
 139     mapped_addr = get_errno((long)mmap((caddr_t)brk_page, new_alloc_size,
 140                                        PROT_READ|PROT_WRITE,
 141                                        MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 142
 143     if (is_error(mapped_addr)) {
 144         return mapped_addr;
 145     } else {
 146         target_brk = new_brk;
 147         return (long)target_brk;
 148     }
 149 }
 150
 151 static inline fd_set *target_to_host_fds(fd_set *fds,
 152                                          target_long *target_fds, int n)
 153 {
 154 #if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN)
 155     return (fd_set *)target_fds;
 156 #else
 157     int i, b;
 158     if (target_fds) {
 159         FD_ZERO(fds);
 160         for(i = 0;i < n; i++) {
 161             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 162                  (i & (TARGET_LONG_BITS - 1))) & 1;
 163             if (b)
 164                 FD_SET(i, fds);
 165         }
 166         return fds;
 167     } else {
 168         return NULL;
 169     }
 170 #endif
 171 }
 172
 173 static inline void host_to_target_fds(target_long *target_fds,
 174                                       fd_set *fds, int n)
 175 {
 176 #if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN)
 177     /* nothing to do */
 178 #else
 179     int i, nw, j, k;
 180     target_long v;
 181
 182     if (target_fds) {
 183         nw = n / TARGET_LONG_BITS;
 184         k = 0;
 185         for(i = 0;i < nw; i++) {
 186             v = 0;
 187             for(j = 0; j < TARGET_LONG_BITS; j++) {
 188                 v |= ((FD_ISSET(k, fds) != 0) << j);
 189                 k++;
 190             }
 191             target_fds[i] = tswapl(v);
 192         }
 193     }
 194 #endif
 195 }
 196
 197 /* XXX: incorrect for some archs */
 198 static void host_to_target_old_sigset(target_ulong *old_sigset,
 199                                       const sigset_t *sigset)
 200 {
 201     *old_sigset = tswap32(*(unsigned long *)sigset & 0xffffffff);
 202 }
 203
 204 static void target_to_host_old_sigset(sigset_t *sigset,
 205                                       const target_ulong *old_sigset)
 206 {
 207     sigemptyset(sigset);
 208     *(unsigned long *)sigset = tswapl(*old_sigset);
 209 }
 210
 211
 212 static long do_select(long n,
 213                       target_long *target_rfds, target_long *target_wfds,
 214                       target_long *target_efds, struct target_timeval *target_tv)
 215 {
 216     fd_set rfds, wfds, efds;
 217     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 218     struct timeval tv, *tv_ptr;
 219     long ret;
 220
 221     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 222     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 223     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 224
 225     if (target_tv) {
 226         tv.tv_sec = tswapl(target_tv->tv_sec);
 227         tv.tv_usec = tswapl(target_tv->tv_usec);
 228         tv_ptr = &tv;
 229     } else {
 230         tv_ptr = NULL;
 231     }
 232     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 233     if (!is_error(ret)) {
 234         host_to_target_fds(target_rfds, rfds_ptr, n);
 235         host_to_target_fds(target_wfds, wfds_ptr, n);
 236         host_to_target_fds(target_efds, efds_ptr, n);
 237
 238         if (target_tv) {
 239             target_tv->tv_sec = tswapl(tv.tv_sec);
 240             target_tv->tv_usec = tswapl(tv.tv_usec);
 241         }
 242     }
 243     return ret;
 244 }
 245
 246 static long do_socketcall(int num, long *vptr)
 247 {
 248     long ret;
 249
 250     switch(num) {
 251     case SOCKOP_socket:
 252         ret = get_errno(socket(vptr[0], vptr[1], vptr[2]));
 253         break;
 254     case SOCKOP_bind:
 255         ret = get_errno(bind(vptr[0], (struct sockaddr *)vptr[1], vptr[2]));
 256         break;
 257     case SOCKOP_connect:
 258         ret = get_errno(connect(vptr[0], (struct sockaddr *)vptr[1], vptr[2]));
 259         break;
 260     case SOCKOP_listen:
 261         ret = get_errno(listen(vptr[0], vptr[1]));
 262         break;
 263     case SOCKOP_accept:
 264         {
 265             socklen_t size;
 266             size = tswap32(*(int32_t *)vptr[2]);
 267             ret = get_errno(accept(vptr[0], (struct sockaddr *)vptr[1], &size));
 268             if (!is_error(ret))
 269                 *(int32_t *)vptr[2] = size;
 270         }
 271         break;
 272     case SOCKOP_getsockname:
 273         {
 274             socklen_t size;
 275             size = tswap32(*(int32_t *)vptr[2]);
 276             ret = get_errno(getsockname(vptr[0], (struct sockaddr *)vptr[1], &size));
 277             if (!is_error(ret))
 278                 *(int32_t *)vptr[2] = size;
 279         }
 280         break;
 281     case SOCKOP_getpeername:
 282         {
 283             socklen_t size;
 284             size = tswap32(*(int32_t *)vptr[2]);
 285             ret = get_errno(getpeername(vptr[0], (struct sockaddr *)vptr[1], &size));
 286             if (!is_error(ret))
 287                 *(int32_t *)vptr[2] = size;
 288         }
 289         break;
 290     case SOCKOP_socketpair:
 291         {
 292             int tab[2];
 293             int32_t *target_tab = (int32_t *)vptr[3];
 294             ret = get_errno(socketpair(vptr[0], vptr[1], vptr[2], tab));
 295             if (!is_error(ret)) {
 296                 target_tab[0] = tswap32(tab[0]);
 297                 target_tab[1] = tswap32(tab[1]);
 298             }
 299         }
 300         break;
 301     case SOCKOP_send:
 302         ret = get_errno(send(vptr[0], (void *)vptr[1], vptr[2], vptr[3]));
 303         break;
 304     case SOCKOP_recv:
 305         ret = get_errno(recv(vptr[0], (void *)vptr[1], vptr[2], vptr[3]));
 306         break;
 307     case SOCKOP_sendto:
 308         ret = get_errno(sendto(vptr[0], (void *)vptr[1], vptr[2], vptr[3],
 309                                (struct sockaddr *)vptr[4], vptr[5]));
 310         break;
 311     case SOCKOP_recvfrom:
 312         {
 313             socklen_t size;
 314             size = tswap32(*(int32_t *)vptr[5]);
 315             ret = get_errno(recvfrom(vptr[0], (void *)vptr[1], vptr[2],
 316                                      vptr[3], (struct sockaddr *)vptr[4], &size));
 317             if (!is_error(ret))
 318                 *(int32_t *)vptr[5] = size;
 319         }
 320         break;
 321     case SOCKOP_shutdown:
 322         ret = get_errno(shutdown(vptr[0], vptr[1]));
 323         break;
 324     case SOCKOP_sendmsg:
 325     case SOCKOP_recvmsg:
 326     case SOCKOP_setsockopt:
 327     case SOCKOP_getsockopt:
 328     default:
 329         gemu_log("Unsupported socketcall: %d\n", num);
 330         ret = -ENOSYS;
 331         break;
 332     }
 333     return ret;
 334 }
 335
 336 /* kernel structure types definitions */
 337 #define IFNAMSIZ        16
 338
 339 #define STRUCT(name, list...) STRUCT_ ## name,
 340 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 341 enum {
 342 #include "syscall_types.h"
 343 };
 344 #undef STRUCT
 345 #undef STRUCT_SPECIAL
 346
 347 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 348 #define STRUCT_SPECIAL(name)
 349 #include "syscall_types.h"
 350 #undef STRUCT
 351 #undef STRUCT_SPECIAL
 352
 353 typedef struct IOCTLEntry {
 354     int target_cmd;
 355     int host_cmd;
 356     const char *name;
 357     int access;
 358     const argtype arg_type[3];
 359 } IOCTLEntry;
 360
 361 #define IOC_R 0x0001
 362 #define IOC_W 0x0002
 363 #define IOC_RW (IOC_R | IOC_W)
 364
 365 #define MAX_STRUCT_SIZE 4096
 366
 367 const IOCTLEntry ioctl_entries[] = {
 368 #define IOCTL(cmd, access, types...) \
 369     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 370 #include "ioctls.h"
 371     { 0, 0, },
 372 };
 373
 374 static long do_ioctl(long fd, long cmd, long arg)
 375 {
 376     const IOCTLEntry *ie;
 377     const argtype *arg_type;
 378     long ret;
 379     uint8_t buf_temp[MAX_STRUCT_SIZE];
 380
 381     ie = ioctl_entries;
 382     for(;;) {
 383         if (ie->target_cmd == 0) {
 384             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 385             return -ENOSYS;
 386         }
 387         if (ie->target_cmd == cmd)
 388             break;
 389         ie++;
 390     }
 391     arg_type = ie->arg_type;
 392 #ifdef DEBUG
 393     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 394 #endif
 395     switch(arg_type[0]) {
 396     case TYPE_NULL:
 397         /* no argument */
 398         ret = get_errno(ioctl(fd, ie->host_cmd));
 399         break;
 400     case TYPE_PTRVOID:
 401     case TYPE_INT:
 402         /* int argment */
 403         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 404         break;
 405     case TYPE_PTR:
 406         arg_type++;
 407         switch(ie->access) {
 408         case IOC_R:
 409             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 410             if (!is_error(ret)) {
 411                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 412             }
 413             break;
 414         case IOC_W:
 415             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 416             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 417             break;
 418         default:
 419         case IOC_RW:
 420             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 421             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 422             if (!is_error(ret)) {
 423                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 424             }
 425             break;
 426         }
 427         break;
 428     default:
 429         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 430         ret = -ENOSYS;
 431         break;
 432     }
 433     return ret;
 434 }
 435
 436 bitmask_transtbl iflag_tbl[] = {
 437         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 438         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 439         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 440         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 441         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 442         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 443         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 444         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 445         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 446         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 447         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 448         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 449         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 450         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 451         { 0, 0, 0, 0 }
 452 };
 453
 454 bitmask_transtbl oflag_tbl[] = {
 455         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 456         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 457         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 458         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 459         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 460         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 461         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 462         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 463         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 464         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 465         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 466         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 467         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 468         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 469         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 470         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 471         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 472         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 473         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 474         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 475         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 476         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 477         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 478         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 479         { 0, 0, 0, 0 }
 480 };
 481
 482 bitmask_transtbl cflag_tbl[] = {
 483         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 484         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 485         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 486         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 487         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 488         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
 489         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
 490         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
 491         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
 492         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
 493         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
 494         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
 495         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
 496         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
 497         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
 498         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
 499         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
 500         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
 501         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
 502         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
 503         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
 504         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
 505         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
 506         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
 507         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
 508         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
 509         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
 510         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
 511         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 512         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 513         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
 514         { 0, 0, 0, 0 }
 515 };
 516
 517 bitmask_transtbl lflag_tbl[] = {
 518         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
 519         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
 520         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
 521         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
 522         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
 523         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
 524         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
 525         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
 526         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
 527         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
 528         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
 529         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
 530         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
 531         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
 532         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
 533         { 0, 0, 0, 0 }
 534 };
 535
 536 static void target_to_host_termios (void *dst, const void *src)
 537 {
 538     struct host_termios *host = dst;
 539     const struct target_termios *target = src;
 540
 541     host->c_iflag =
 542         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
 543     host->c_oflag =
 544         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
 545     host->c_cflag =
 546         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
 547     host->c_lflag =
 548         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
 549     host->c_line = target->c_line;
 550
 551     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
 552     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
 553     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
 554     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
 555     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
 556     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
 557     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
 558     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
 559     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
 560     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
 561     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
 562     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
 563     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
 564     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
 565     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
 566     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
 567     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
 568 }
 569
 570 static void host_to_target_termios (void *dst, const void *src)
 571 {
 572     struct target_termios *target = dst;
 573     const struct host_termios *host = src;
 574
 575     target->c_iflag =
 576         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
 577     target->c_oflag =
 578         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
 579     target->c_cflag =
 580         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
 581     target->c_lflag =
 582         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
 583     target->c_line = host->c_line;
 584
 585     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
 586     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
 587     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
 588     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
 589     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
 590     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
 591     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
 592     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
 593     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
 594     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
 595     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
 596     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
 597     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
 598     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
 599     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
 600     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
 601     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
 602 }
 603
 604 StructEntry struct_termios_def = {
 605     .convert = { host_to_target_termios, target_to_host_termios },
 606     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
 607     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
 608 };
 609
 610 void syscall_init(void)
 611 {
 612 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
 613 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
 614 #include "syscall_types.h"
 615 #undef STRUCT
 616 #undef STRUCT_SPECIAL
 617 }
 618
 619 long do_syscall(int num, long arg1, long arg2, long arg3,
 620                 long arg4, long arg5, long arg6)
 621 {
 622     long ret;
 623     struct stat st;
 624     struct kernel_statfs *stfs;
 625
 626 #ifdef DEBUG
 627     gemu_log("syscall %d\n", num);
 628 #endif
 629     switch(num) {
 630     case TARGET_NR_exit:
 631         _exit(arg1);
 632         ret = 0; /* avoid warning */
 633         break;
 634     case TARGET_NR_read:
 635         ret = get_errno(read(arg1, (void *)arg2, arg3));
 636         break;
 637     case TARGET_NR_write:
 638         ret = get_errno(write(arg1, (void *)arg2, arg3));
 639         break;
 640     case TARGET_NR_open:
 641         ret = get_errno(open((const char *)arg1, arg2, arg3));
 642         break;
 643     case TARGET_NR_close:
 644         ret = get_errno(close(arg1));
 645         break;
 646     case TARGET_NR_brk:
 647         ret = do_brk((char *)arg1);
 648         break;
 649     case TARGET_NR_fork:
 650         ret = get_errno(fork());
 651         break;
 652     case TARGET_NR_waitpid:
 653         {
 654             int *status = (int *)arg2;
 655             ret = get_errno(waitpid(arg1, status, arg3));
 656             if (!is_error(ret) && status)
 657                 tswapls((long *)&status);
 658         }
 659         break;
 660     case TARGET_NR_creat:
 661         ret = get_errno(creat((const char *)arg1, arg2));
 662         break;
 663     case TARGET_NR_link:
 664         ret = get_errno(link((const char *)arg1, (const char *)arg2));
 665         break;
 666     case TARGET_NR_unlink:
 667         ret = get_errno(unlink((const char *)arg1));
 668         break;
 669     case TARGET_NR_execve:
 670         ret = get_errno(execve((const char *)arg1, (void *)arg2, (void *)arg3));
 671         break;
 672     case TARGET_NR_chdir:
 673         ret = get_errno(chdir((const char *)arg1));
 674         break;
 675     case TARGET_NR_time:
 676         {
 677             int *time_ptr = (int *)arg1;
 678             ret = get_errno(time((time_t *)time_ptr));
 679             if (!is_error(ret) && time_ptr)
 680                 tswap32s(time_ptr);
 681         }
 682         break;
 683     case TARGET_NR_mknod:
 684         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
 685         break;
 686     case TARGET_NR_chmod:
 687         ret = get_errno(chmod((const char *)arg1, arg2));
 688         break;
 689     case TARGET_NR_lchown:
 690         ret = get_errno(chown((const char *)arg1, arg2, arg3));
 691         break;
 692     case TARGET_NR_break:
 693         goto unimplemented;
 694     case TARGET_NR_oldstat:
 695         goto unimplemented;
 696     case TARGET_NR_lseek:
 697         ret = get_errno(lseek(arg1, arg2, arg3));
 698         break;
 699     case TARGET_NR_getpid:
 700         ret = get_errno(getpid());
 701         break;
 702     case TARGET_NR_mount:
 703         /* need to look at the data field */
 704         goto unimplemented;
 705     case TARGET_NR_umount:
 706         ret = get_errno(umount((const char *)arg1));
 707         break;
 708     case TARGET_NR_setuid:
 709         ret = get_errno(setuid(arg1));
 710         break;
 711     case TARGET_NR_getuid:
 712         ret = get_errno(getuid());
 713         break;
 714     case TARGET_NR_stime:
 715         {
 716             int *time_ptr = (int *)arg1;
 717             if (time_ptr)
 718                 tswap32s(time_ptr);
 719             ret = get_errno(stime((time_t *)time_ptr));
 720         }
 721         break;
 722     case TARGET_NR_ptrace:
 723         goto unimplemented;
 724     case TARGET_NR_alarm:
 725         ret = alarm(arg1);
 726         break;
 727     case TARGET_NR_oldfstat:
 728         goto unimplemented;
 729     case TARGET_NR_pause:
 730         ret = get_errno(pause());
 731         break;
 732     case TARGET_NR_utime:
 733         goto unimplemented;
 734     case TARGET_NR_stty:
 735         goto unimplemented;
 736     case TARGET_NR_gtty:
 737         goto unimplemented;
 738     case TARGET_NR_access:
 739         ret = get_errno(access((const char *)arg1, arg2));
 740         break;
 741     case TARGET_NR_nice:
 742         ret = get_errno(nice(arg1));
 743         break;
 744     case TARGET_NR_ftime:
 745         goto unimplemented;
 746     case TARGET_NR_sync:
 747         ret = get_errno(sync());
 748         break;
 749     case TARGET_NR_kill:
 750         ret = get_errno(kill(arg1, arg2));
 751         break;
 752     case TARGET_NR_rename:
 753         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
 754         break;
 755     case TARGET_NR_mkdir:
 756         ret = get_errno(mkdir((const char *)arg1, arg2));
 757         break;
 758     case TARGET_NR_rmdir:
 759         ret = get_errno(rmdir((const char *)arg1));
 760         break;
 761     case TARGET_NR_dup:
 762         ret = get_errno(dup(arg1));
 763         break;
 764     case TARGET_NR_pipe:
 765         {
 766             int *pipe_ptr = (int *)arg1;
 767             ret = get_errno(pipe(pipe_ptr));
 768             if (!is_error(ret)) {
 769                 tswap32s(&pipe_ptr[0]);
 770                 tswap32s(&pipe_ptr[1]);
 771             }
 772         }
 773         break;
 774     case TARGET_NR_times:
 775         goto unimplemented;
 776     case TARGET_NR_prof:
 777         goto unimplemented;
 778     case TARGET_NR_setgid:
 779         ret = get_errno(setgid(arg1));
 780         break;
 781     case TARGET_NR_getgid:
 782         ret = get_errno(getgid());
 783         break;
 784     case TARGET_NR_signal:
 785         goto unimplemented;
 786     case TARGET_NR_geteuid:
 787         ret = get_errno(geteuid());
 788         break;
 789     case TARGET_NR_getegid:
 790         ret = get_errno(getegid());
 791         break;
 792     case TARGET_NR_acct:
 793         goto unimplemented;
 794     case TARGET_NR_umount2:
 795         ret = get_errno(umount2((const char *)arg1, arg2));
 796         break;
 797     case TARGET_NR_lock:
 798         goto unimplemented;
 799     case TARGET_NR_ioctl:
 800         ret = do_ioctl(arg1, arg2, arg3);
 801         break;
 802     case TARGET_NR_fcntl:
 803         switch(arg2) {
 804         case F_GETLK:
 805         case F_SETLK:
 806         case F_SETLKW:
 807             goto unimplemented;
 808         default:
 809             ret = get_errno(fcntl(arg1, arg2, arg3));
 810             break;
 811         }
 812         break;
 813     case TARGET_NR_mpx:
 814         goto unimplemented;
 815     case TARGET_NR_setpgid:
 816         ret = get_errno(setpgid(arg1, arg2));
 817         break;
 818     case TARGET_NR_ulimit:
 819         goto unimplemented;
 820     case TARGET_NR_oldolduname:
 821         goto unimplemented;
 822     case TARGET_NR_umask:
 823         ret = get_errno(umask(arg1));
 824         break;
 825     case TARGET_NR_chroot:
 826         ret = get_errno(chroot((const char *)arg1));
 827         break;
 828     case TARGET_NR_ustat:
 829         goto unimplemented;
 830     case TARGET_NR_dup2:
 831         ret = get_errno(dup2(arg1, arg2));
 832         break;
 833     case TARGET_NR_getppid:
 834         ret = get_errno(getppid());
 835         break;
 836     case TARGET_NR_getpgrp:
 837         ret = get_errno(getpgrp());
 838         break;
 839     case TARGET_NR_setsid:
 840         ret = get_errno(setsid());
 841         break;
 842     case TARGET_NR_sigaction:
 843 #if 0
 844         {
 845             int signum = arg1;
 846             struct target_old_sigaction *tact = arg2, *toldact = arg3;
 847             ret = get_errno(setsid());
 848
 849
 850         }
 851         break;
 852 #else
 853         goto unimplemented;
 854 #endif
 855     case TARGET_NR_sgetmask:
 856         goto unimplemented;
 857     case TARGET_NR_ssetmask:
 858         goto unimplemented;
 859     case TARGET_NR_setreuid:
 860         ret = get_errno(setreuid(arg1, arg2));
 861         break;
 862     case TARGET_NR_setregid:
 863         ret = get_errno(setregid(arg1, arg2));
 864         break;
 865     case TARGET_NR_sigsuspend:
 866         goto unimplemented;
 867     case TARGET_NR_sigpending:
 868         goto unimplemented;
 869     case TARGET_NR_sethostname:
 870         ret = get_errno(sethostname((const char *)arg1, arg2));
 871         break;
 872     case TARGET_NR_setrlimit:
 873         goto unimplemented;
 874     case TARGET_NR_getrlimit:
 875         goto unimplemented;
 876     case TARGET_NR_getrusage:
 877         goto unimplemented;
 878     case TARGET_NR_gettimeofday:
 879         {
 880             struct target_timeval *target_tv = (void *)arg1;
 881             struct timeval tv;
 882             ret = get_errno(gettimeofday(&tv, NULL));
 883             if (!is_error(ret)) {
 884                 target_tv->tv_sec = tswapl(tv.tv_sec);
 885                 target_tv->tv_usec = tswapl(tv.tv_usec);
 886             }
 887         }
 888         break;
 889     case TARGET_NR_settimeofday:
 890         {
 891             struct target_timeval *target_tv = (void *)arg1;
 892             struct timeval tv;
 893             tv.tv_sec = tswapl(target_tv->tv_sec);
 894             tv.tv_usec = tswapl(target_tv->tv_usec);
 895             ret = get_errno(settimeofday(&tv, NULL));
 896         }
 897         break;
 898     case TARGET_NR_getgroups:
 899         goto unimplemented;
 900     case TARGET_NR_setgroups:
 901         goto unimplemented;
 902     case TARGET_NR_select:
 903         goto unimplemented;
 904     case TARGET_NR_symlink:
 905         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
 906         break;
 907     case TARGET_NR_oldlstat:
 908         goto unimplemented;
 909     case TARGET_NR_readlink:
 910         ret = get_errno(readlink((const char *)arg1, (char *)arg2, arg3));
 911         break;
 912     case TARGET_NR_uselib:
 913         goto unimplemented;
 914     case TARGET_NR_swapon:
 915         ret = get_errno(swapon((const char *)arg1, arg2));
 916         break;
 917     case TARGET_NR_reboot:
 918         goto unimplemented;
 919     case TARGET_NR_readdir:
 920         goto unimplemented;
 921 #ifdef TARGET_I386
 922     case TARGET_NR_mmap:
 923         {
 924             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
 925             vptr = (uint32_t *)arg1;
 926             v1 = tswap32(vptr[0]);
 927             v2 = tswap32(vptr[1]);
 928             v3 = tswap32(vptr[2]);
 929             v4 = tswap32(vptr[3]);
 930             v5 = tswap32(vptr[4]);
 931             v6 = tswap32(vptr[5]);
 932             ret = get_errno((long)mmap((void *)v1, v2, v3, v4, v5, v6));
 933         }
 934         break;
 935 #endif
 936 #ifdef TARGET_I386
 937     case TARGET_NR_mmap2:
 938 #else
 939     case TARGET_NR_mmap:
 940 #endif
 941         ret = get_errno((long)mmap((void *)arg1, arg2, arg3, arg4, arg5, arg6));
 942         break;
 943     case TARGET_NR_munmap:
 944         ret = get_errno(munmap((void *)arg1, arg2));
 945         break;
 946     case TARGET_NR_truncate:
 947         ret = get_errno(truncate((const char *)arg1, arg2));
 948         break;
 949     case TARGET_NR_ftruncate:
 950         ret = get_errno(ftruncate(arg1, arg2));
 951         break;
 952     case TARGET_NR_fchmod:
 953         ret = get_errno(fchmod(arg1, arg2));
 954         break;
 955     case TARGET_NR_fchown:
 956         ret = get_errno(fchown(arg1, arg2, arg3));
 957         break;
 958     case TARGET_NR_getpriority:
 959         ret = get_errno(getpriority(arg1, arg2));
 960         break;
 961     case TARGET_NR_setpriority:
 962         ret = get_errno(setpriority(arg1, arg2, arg3));
 963         break;
 964     case TARGET_NR_profil:
 965         goto unimplemented;
 966     case TARGET_NR_statfs:
 967         stfs = (void *)arg2;
 968         ret = get_errno(sys_statfs((const char *)arg1, stfs));
 969     convert_statfs:
 970         if (!is_error(ret)) {
 971             tswap32s(&stfs->f_type);
 972             tswap32s(&stfs->f_bsize);
 973             tswap32s(&stfs->f_blocks);
 974             tswap32s(&stfs->f_bfree);
 975             tswap32s(&stfs->f_bavail);
 976             tswap32s(&stfs->f_files);
 977             tswap32s(&stfs->f_ffree);
 978             tswap32s(&stfs->f_fsid.val[0]);
 979             tswap32s(&stfs->f_fsid.val[1]);
 980             tswap32s(&stfs->f_namelen);
 981         }
 982         break;
 983     case TARGET_NR_fstatfs:
 984         stfs = (void *)arg2;
 985         ret = get_errno(sys_fstatfs(arg1, stfs));
 986         goto convert_statfs;
 987     case TARGET_NR_ioperm:
 988         goto unimplemented;
 989     case TARGET_NR_socketcall:
 990         ret = do_socketcall(arg1, (long *)arg2);
 991         break;
 992     case TARGET_NR_syslog:
 993         goto unimplemented;
 994     case TARGET_NR_setitimer:
 995         goto unimplemented;
 996     case TARGET_NR_getitimer:
 997         goto unimplemented;
 998     case TARGET_NR_stat:
 999         ret = get_errno(stat((const char *)arg1, &st));
1000         goto do_stat;
1001     case TARGET_NR_lstat:
1002         ret = get_errno(lstat((const char *)arg1, &st));
1003         goto do_stat;
1004     case TARGET_NR_fstat:
1005         {
1006             ret = get_errno(fstat(arg1, &st));
1007         do_stat:
1008             if (!is_error(ret)) {
1009                 struct target_stat *target_st = (void *)arg2;
1010                 target_st->st_dev = tswap16(st.st_dev);
1011                 target_st->st_ino = tswapl(st.st_ino);
1012                 target_st->st_mode = tswap16(st.st_mode);
1013                 target_st->st_nlink = tswap16(st.st_nlink);
1014                 target_st->st_uid = tswap16(st.st_uid);
1015                 target_st->st_gid = tswap16(st.st_gid);
1016                 target_st->st_rdev = tswap16(st.st_rdev);
1017                 target_st->st_size = tswapl(st.st_size);
1018                 target_st->st_blksize = tswapl(st.st_blksize);
1019                 target_st->st_blocks = tswapl(st.st_blocks);
1020                 target_st->st_atime = tswapl(st.st_atime);
1021                 target_st->st_mtime = tswapl(st.st_mtime);
1022                 target_st->st_ctime = tswapl(st.st_ctime);
1023             }
1024         }
1025         break;
1026     case TARGET_NR_olduname:
1027         goto unimplemented;
1028     case TARGET_NR_iopl:
1029         goto unimplemented;
1030     case TARGET_NR_vhangup:
1031         ret = get_errno(vhangup());
1032         break;
1033     case TARGET_NR_idle:
1034         goto unimplemented;
1035     case TARGET_NR_vm86old:
1036         goto unimplemented;
1037     case TARGET_NR_wait4:
1038         {
1039             int status;
1040             target_long *status_ptr = (void *)arg2;
1041             struct rusage rusage, *rusage_ptr;
1042             struct target_rusage *target_rusage = (void *)arg4;
1043             if (target_rusage)
1044                 rusage_ptr = &rusage;
1045             else
1046                 rusage_ptr = NULL;
1047             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
1048             if (!is_error(ret)) {
1049                 if (status_ptr)
1050                     *status_ptr = tswap32(status);
1051                 if (target_rusage) {
1052                     target_rusage->ru_utime.tv_sec = tswapl(rusage.ru_utime.tv_sec);
1053                     target_rusage->ru_utime.tv_usec = tswapl(rusage.ru_utime.tv_usec);
1054                     target_rusage->ru_stime.tv_sec = tswapl(rusage.ru_stime.tv_sec);
1055                     target_rusage->ru_stime.tv_usec = tswapl(rusage.ru_stime.tv_usec);
1056                     target_rusage->ru_maxrss = tswapl(rusage.ru_maxrss);
1057                     target_rusage->ru_ixrss = tswapl(rusage.ru_ixrss);
1058                     target_rusage->ru_idrss = tswapl(rusage.ru_idrss);
1059                     target_rusage->ru_isrss = tswapl(rusage.ru_isrss);
1060                     target_rusage->ru_minflt = tswapl(rusage.ru_minflt);
1061                     target_rusage->ru_majflt = tswapl(rusage.ru_majflt);
1062                     target_rusage->ru_nswap = tswapl(rusage.ru_nswap);
1063                     target_rusage->ru_inblock = tswapl(rusage.ru_inblock);
1064                     target_rusage->ru_oublock = tswapl(rusage.ru_oublock);
1065                     target_rusage->ru_msgsnd = tswapl(rusage.ru_msgsnd);
1066                     target_rusage->ru_msgrcv = tswapl(rusage.ru_msgrcv);
1067                     target_rusage->ru_nsignals = tswapl(rusage.ru_nsignals);
1068                     target_rusage->ru_nvcsw = tswapl(rusage.ru_nvcsw);
1069                     target_rusage->ru_nivcsw = tswapl(rusage.ru_nivcsw);
1070                 }
1071             }
1072         }
1073         break;
1074     case TARGET_NR_swapoff:
1075         ret = get_errno(swapoff((const char *)arg1));
1076         break;
1077     case TARGET_NR_sysinfo:
1078         goto unimplemented;
1079     case TARGET_NR_ipc:
1080         goto unimplemented;
1081     case TARGET_NR_fsync:
1082         ret = get_errno(fsync(arg1));
1083         break;
1084     case TARGET_NR_sigreturn:
1085         goto unimplemented;
1086     case TARGET_NR_clone:
1087         goto unimplemented;
1088     case TARGET_NR_setdomainname:
1089         ret = get_errno(setdomainname((const char *)arg1, arg2));
1090         break;
1091     case TARGET_NR_uname:
1092         /* no need to transcode because we use the linux syscall */
1093         ret = get_errno(sys_uname((struct new_utsname *)arg1));
1094         break;
1095     case TARGET_NR_modify_ldt:
1096         goto unimplemented;
1097     case TARGET_NR_adjtimex:
1098         goto unimplemented;
1099     case TARGET_NR_mprotect:
1100         ret = get_errno(mprotect((void *)arg1, arg2, arg3));
1101         break;
1102     case TARGET_NR_sigprocmask:
1103         {
1104             int how = arg1;
1105             sigset_t set, oldset, *set_ptr;
1106             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1107
1108             switch(how) {
1109             case TARGET_SIG_BLOCK:
1110                 how = SIG_BLOCK;
1111                 break;
1112             case TARGET_SIG_UNBLOCK:
1113                 how = SIG_UNBLOCK;
1114                 break;
1115             case TARGET_SIG_SETMASK:
1116                 how = SIG_SETMASK;
1117                 break;
1118             default:
1119                 ret = -EINVAL;
1120                 goto fail;
1121             }
1122
1123             if (pset) {
1124                 target_to_host_old_sigset(&set, pset);
1125                 set_ptr = &set;
1126             } else {
1127                 set_ptr = NULL;
1128             }
1129             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1130             if (!is_error(ret) && poldset) {
1131                 host_to_target_old_sigset(poldset, &oldset);
1132             }
1133         }
1134         break;
1135     case TARGET_NR_create_module:
1136     case TARGET_NR_init_module:
1137     case TARGET_NR_delete_module:
1138     case TARGET_NR_get_kernel_syms:
1139         goto unimplemented;
1140     case TARGET_NR_quotactl:
1141         goto unimplemented;
1142     case TARGET_NR_getpgid:
1143         ret = get_errno(getpgid(arg1));
1144         break;
1145     case TARGET_NR_fchdir:
1146         ret = get_errno(fchdir(arg1));
1147         break;
1148     case TARGET_NR_bdflush:
1149         goto unimplemented;
1150     case TARGET_NR_sysfs:
1151         goto unimplemented;
1152     case TARGET_NR_personality:
1153         ret = get_errno(mprotect((void *)arg1, arg2, arg3));
1154         break;
1155     case TARGET_NR_afs_syscall:
1156         goto unimplemented;
1157     case TARGET_NR_setfsuid:
1158         goto unimplemented;
1159     case TARGET_NR_setfsgid:
1160         goto unimplemented;
1161     case TARGET_NR__llseek:
1162         {
1163             int64_t res;
1164             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
1165             *(int64_t *)arg4 = tswap64(res);
1166         }
1167         break;
1168     case TARGET_NR_getdents:
1169 #if TARGET_LONG_SIZE != 4
1170 #error not supported
1171 #endif
1172         {
1173             struct dirent *dirp = (void *)arg2;
1174             long count = arg3;
1175             ret = get_errno(sys_getdents(arg1, dirp, count));
1176             if (!is_error(ret)) {
1177                 struct dirent *de;
1178                 int len = ret;
1179                 int reclen;
1180                 de = dirp;
1181                 while (len > 0) {
1182                     reclen = tswap16(de->d_reclen);
1183                     if (reclen > len)
1184                         break;
1185                     de->d_reclen = reclen;
1186                     tswapls(&de->d_ino);
1187                     tswapls(&de->d_off);
1188                     de = (struct dirent *)((char *)de + reclen);
1189                     len -= reclen;
1190                 }
1191             }
1192         }
1193         break;
1194     case TARGET_NR__newselect:
1195         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
1196                         (void *)arg5);
1197         break;
1198     case TARGET_NR_flock:
1199         goto unimplemented;
1200     case TARGET_NR_msync:
1201         ret = get_errno(msync((void *)arg1, arg2, arg3));
1202         break;
1203     case TARGET_NR_readv:
1204         {
1205             int count = arg3;
1206             int i;
1207             struct iovec *vec;
1208             struct target_iovec *target_vec = (void *)arg2;
1209
1210             vec = alloca(count * sizeof(struct iovec));
1211             for(i = 0;i < count; i++) {
1212                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
1213                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
1214             }
1215             ret = get_errno(readv(arg1, vec, count));
1216         }
1217         break;
1218     case TARGET_NR_writev:
1219         {
1220             int count = arg3;
1221             int i;
1222             struct iovec *vec;
1223             struct target_iovec *target_vec = (void *)arg2;
1224
1225             vec = alloca(count * sizeof(struct iovec));
1226             for(i = 0;i < count; i++) {
1227                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
1228                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
1229             }
1230             ret = get_errno(writev(arg1, vec, count));
1231         }
1232         break;
1233     case TARGET_NR_getsid:
1234         ret = get_errno(getsid(arg1));
1235         break;
1236     case TARGET_NR_fdatasync:
1237         goto unimplemented;
1238     case TARGET_NR__sysctl:
1239         goto unimplemented;
1240     case TARGET_NR_mlock:
1241         ret = get_errno(mlock((void *)arg1, arg2));
1242         break;
1243     case TARGET_NR_munlock:
1244         ret = get_errno(munlock((void *)arg1, arg2));
1245         break;
1246     case TARGET_NR_mlockall:
1247         ret = get_errno(mlockall(arg1));
1248         break;
1249     case TARGET_NR_munlockall:
1250         ret = get_errno(munlockall());
1251         break;
1252     case TARGET_NR_sched_setparam:
1253         goto unimplemented;
1254     case TARGET_NR_sched_getparam:
1255         goto unimplemented;
1256     case TARGET_NR_sched_setscheduler:
1257         goto unimplemented;
1258     case TARGET_NR_sched_getscheduler:
1259         goto unimplemented;
1260     case TARGET_NR_sched_yield:
1261         ret = get_errno(sched_yield());
1262         break;
1263     case TARGET_NR_sched_get_priority_max:
1264     case TARGET_NR_sched_get_priority_min:
1265     case TARGET_NR_sched_rr_get_interval:
1266     case TARGET_NR_nanosleep:
1267     case TARGET_NR_mremap:
1268     case TARGET_NR_setresuid:
1269     case TARGET_NR_getresuid:
1270     case TARGET_NR_vm86:
1271     case TARGET_NR_query_module:
1272     case TARGET_NR_poll:
1273     case TARGET_NR_nfsservctl:
1274     case TARGET_NR_setresgid:
1275     case TARGET_NR_getresgid:
1276     case TARGET_NR_prctl:
1277     case TARGET_NR_rt_sigreturn:
1278     case TARGET_NR_rt_sigaction:
1279     case TARGET_NR_rt_sigprocmask:
1280     case TARGET_NR_rt_sigpending:
1281     case TARGET_NR_rt_sigtimedwait:
1282     case TARGET_NR_rt_sigqueueinfo:
1283     case TARGET_NR_rt_sigsuspend:
1284     case TARGET_NR_pread:
1285     case TARGET_NR_pwrite:
1286         goto unimplemented;
1287     case TARGET_NR_chown:
1288         ret = get_errno(chown((const char *)arg1, arg2, arg3));
1289         break;
1290     case TARGET_NR_getcwd:
1291         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
1292         break;
1293     case TARGET_NR_capget:
1294     case TARGET_NR_capset:
1295     case TARGET_NR_sigaltstack:
1296     case TARGET_NR_sendfile:
1297     case TARGET_NR_getpmsg:
1298     case TARGET_NR_putpmsg:
1299     case TARGET_NR_vfork:
1300         ret = get_errno(vfork());
1301         break;
1302     case TARGET_NR_ugetrlimit:
1303     case TARGET_NR_truncate64:
1304     case TARGET_NR_ftruncate64:
1305     case TARGET_NR_stat64:
1306     case TARGET_NR_lstat64:
1307     case TARGET_NR_fstat64:
1308     case TARGET_NR_lchown32:
1309     case TARGET_NR_getuid32:
1310     case TARGET_NR_getgid32:
1311     case TARGET_NR_geteuid32:
1312     case TARGET_NR_getegid32:
1313     case TARGET_NR_setreuid32:
1314     case TARGET_NR_setregid32:
1315     case TARGET_NR_getgroups32:
1316     case TARGET_NR_setgroups32:
1317     case TARGET_NR_fchown32:
1318     case TARGET_NR_setresuid32:
1319     case TARGET_NR_getresuid32:
1320     case TARGET_NR_setresgid32:
1321     case TARGET_NR_getresgid32:
1322     case TARGET_NR_chown32:
1323     case TARGET_NR_setuid32:
1324     case TARGET_NR_setgid32:
1325     case TARGET_NR_setfsuid32:
1326     case TARGET_NR_setfsgid32:
1327     case TARGET_NR_pivot_root:
1328     case TARGET_NR_mincore:
1329     case TARGET_NR_madvise:
1330     case TARGET_NR_getdents64:
1331     case TARGET_NR_fcntl64:
1332     case TARGET_NR_security:
1333         goto unimplemented;
1334     case TARGET_NR_gettid:
1335         ret = get_errno(gettid());
1336         break;
1337     case TARGET_NR_readahead:
1338     case TARGET_NR_setxattr:
1339     case TARGET_NR_lsetxattr:
1340     case TARGET_NR_fsetxattr:
1341     case TARGET_NR_getxattr:
1342     case TARGET_NR_lgetxattr:
1343     case TARGET_NR_fgetxattr:
1344     case TARGET_NR_listxattr:
1345     case TARGET_NR_llistxattr:
1346     case TARGET_NR_flistxattr:
1347     case TARGET_NR_removexattr:
1348     case TARGET_NR_lremovexattr:
1349     case TARGET_NR_fremovexattr:
1350         goto unimplemented;
1351     default:
1352     unimplemented:
1353         gemu_log("Unsupported syscall: %d\n", num);
1354         ret = -ENOSYS;
1355         break;
1356     }
1357  fail:
1358     return ret;
1359 }
1360