diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 1349 |
1 files changed, 1349 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c new file mode 100644 index 0000000000..d5909b2215 --- /dev/null +++ b/linux-user/syscall.c @@ -0,0 +1,1349 @@ +/* + * Linux syscalls + * + * Copyright (c) 2003 Fabrice Bellard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <elf.h> +#include <endian.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <sys/mount.h> +#include <sys/resource.h> +#include <sys/mman.h> +#include <sys/swap.h> +#include <signal.h> +#include <sched.h> +#include <sys/socket.h> +#include <sys/uio.h> +#include <sys/user.h> + +#define termios host_termios +#define winsize host_winsize +#define termio host_termio + +#include <linux/termios.h> +#include <linux/unistd.h> +#include <linux/utsname.h> +#include <linux/cdrom.h> +#include <linux/hdreg.h> +#include <linux/soundcard.h> + +#include "gemu.h" + +#define DEBUG + +#ifndef PAGE_SIZE +#define PAGE_SIZE 4096 +#define PAGE_MASK ~(PAGE_SIZE - 1) +#endif + +struct dirent { + long d_ino; + long d_off; + unsigned short d_reclen; + char d_name[256]; /* We must not include limits.h! */ +}; + +#include "syscall_defs.h" + +#ifdef TARGET_I386 +#include "syscall-i386.h" +#endif + +#define __NR_sys_uname __NR_uname +#define __NR_sys_getcwd __NR_getcwd +#define __NR_sys_statfs __NR_statfs +#define __NR_sys_fstatfs __NR_fstatfs + +_syscall0(int, gettid) +_syscall1(int,sys_uname,struct new_utsname *,buf) +_syscall2(int,sys_getcwd,char *,buf,size_t,size) +_syscall3(int, getdents, uint, fd, struct dirent *, dirp, uint, count); +_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, + loff_t *, res, uint, wh); +_syscall2(int,sys_statfs,const char *,path,struct statfs *,buf) +_syscall2(int,sys_fstatfs,int,fd,struct statfs *,buf) + +static inline long get_errno(long ret) +{ + if (ret == -1) + return -errno; + else + return ret; +} + +static inline int is_error(long ret) +{ + return (unsigned long)ret >= (unsigned long)(-4096); +} + +static char *target_brk; +static char *target_original_brk; + +void target_set_brk(char *new_brk) +{ + target_brk = new_brk; + target_original_brk = new_brk; +} + +static long do_brk(char *new_brk) +{ + char *brk_page; + long mapped_addr; + int new_alloc_size; + + if (!new_brk) + return (long)target_brk; + if (new_brk < target_original_brk) + return -ENOMEM; + + brk_page = (char *)(((unsigned long)target_brk + PAGE_SIZE - 1) & PAGE_MASK); + + /* If the new brk is less than this, set it and we're done... */ + if (new_brk < brk_page) { + target_brk = new_brk; + return (long)target_brk; + } + + /* We need to allocate more memory after the brk... */ + new_alloc_size = ((new_brk - brk_page + 1)+(PAGE_SIZE-1)) & PAGE_MASK; + mapped_addr = get_errno((long)mmap((caddr_t)brk_page, new_alloc_size, + PROT_READ|PROT_WRITE, + MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0)); + + if (is_error(mapped_addr)) { + return mapped_addr; + } else { + target_brk = new_brk; + return (long)target_brk; + } +} + +static inline fd_set *target_to_host_fds(fd_set *fds, + target_long *target_fds, int n) +{ +#if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN) + return (fd_set *)target_fds; +#else + int i, b; + if (target_fds) { + FD_ZERO(fds); + for(i = 0;i < n; i++) { + b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >> + (i & (TARGET_LONG_BITS - 1))) & 1; + if (b) + FD_SET(i, fds); + } + return fds; + } else { + return NULL; + } +#endif +} + +static inline void host_to_target_fds(target_long *target_fds, + fd_set *fds, int n) +{ +#if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN) + /* nothing to do */ +#else + int i, nw, j, k; + target_long v; + + if (target_fds) { + nw = n / TARGET_LONG_BITS; + k = 0; + for(i = 0;i < nw; i++) { + v = 0; + for(j = 0; j < TARGET_LONG_BITS; j++) { + v |= ((FD_ISSET(k, fds) != 0) << j); + k++; + } + target_fds[i] = tswapl(v); + } + } +#endif +} + +/* XXX: incorrect for some archs */ +static void host_to_target_old_sigset(target_ulong *old_sigset, + const sigset_t *sigset) +{ + *old_sigset = tswap32(*(unsigned long *)sigset & 0xffffffff); +} + +static void target_to_host_old_sigset(sigset_t *sigset, + const target_ulong *old_sigset) +{ + sigemptyset(sigset); + *(unsigned long *)sigset = tswapl(*old_sigset); +} + + +static long do_select(long n, + target_long *target_rfds, target_long *target_wfds, + target_long *target_efds, struct target_timeval *target_tv) +{ + fd_set rfds, wfds, efds; + fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; + struct timeval tv, *tv_ptr; + long ret; + + rfds_ptr = target_to_host_fds(&rfds, target_rfds, n); + wfds_ptr = target_to_host_fds(&wfds, target_wfds, n); + efds_ptr = target_to_host_fds(&efds, target_efds, n); + + if (target_tv) { + tv.tv_sec = tswapl(target_tv->tv_sec); + tv.tv_usec = tswapl(target_tv->tv_usec); + tv_ptr = &tv; + } else { + tv_ptr = NULL; + } + ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr)); + if (!is_error(ret)) { + host_to_target_fds(target_rfds, rfds_ptr, n); + host_to_target_fds(target_wfds, wfds_ptr, n); + host_to_target_fds(target_efds, efds_ptr, n); + + if (target_tv) { + target_tv->tv_sec = tswapl(tv.tv_sec); + target_tv->tv_usec = tswapl(tv.tv_usec); + } + } + return ret; +} + +static long do_socketcall(int num, long *vptr) +{ + long ret; + + switch(num) { + case SOCKOP_socket: + ret = get_errno(socket(vptr[0], vptr[1], vptr[2])); + break; + case SOCKOP_bind: + ret = get_errno(bind(vptr[0], (struct sockaddr *)vptr[1], vptr[2])); + break; + case SOCKOP_connect: + ret = get_errno(connect(vptr[0], (struct sockaddr *)vptr[1], vptr[2])); + break; + case SOCKOP_listen: + ret = get_errno(listen(vptr[0], vptr[1])); + break; + case SOCKOP_accept: + { + socklen_t size; + size = tswap32(*(int32_t *)vptr[2]); + ret = get_errno(accept(vptr[0], (struct sockaddr *)vptr[1], &size)); + if (!is_error(ret)) + *(int32_t *)vptr[2] = size; + } + break; + case SOCKOP_getsockname: + { + socklen_t size; + size = tswap32(*(int32_t *)vptr[2]); + ret = get_errno(getsockname(vptr[0], (struct sockaddr *)vptr[1], &size)); + if (!is_error(ret)) + *(int32_t *)vptr[2] = size; + } + break; + case SOCKOP_getpeername: + { + socklen_t size; + size = tswap32(*(int32_t *)vptr[2]); + ret = get_errno(getpeername(vptr[0], (struct sockaddr *)vptr[1], &size)); + if (!is_error(ret)) + *(int32_t *)vptr[2] = size; + } + break; + case SOCKOP_socketpair: + { + int tab[2]; + int32_t *target_tab = (int32_t *)vptr[3]; + ret = get_errno(socketpair(vptr[0], vptr[1], vptr[2], tab)); + if (!is_error(ret)) { + target_tab[0] = tswap32(tab[0]); + target_tab[1] = tswap32(tab[1]); + } + } + break; + case SOCKOP_send: + ret = get_errno(send(vptr[0], (void *)vptr[1], vptr[2], vptr[3])); + break; + case SOCKOP_recv: + ret = get_errno(recv(vptr[0], (void *)vptr[1], vptr[2], vptr[3])); + break; + case SOCKOP_sendto: + ret = get_errno(sendto(vptr[0], (void *)vptr[1], vptr[2], vptr[3], + (struct sockaddr *)vptr[4], vptr[5])); + break; + case SOCKOP_recvfrom: + { + socklen_t size; + size = tswap32(*(int32_t *)vptr[5]); + ret = get_errno(recvfrom(vptr[0], (void *)vptr[1], vptr[2], + vptr[3], (struct sockaddr *)vptr[4], &size)); + if (!is_error(ret)) + *(int32_t *)vptr[5] = size; + } + break; + case SOCKOP_shutdown: + ret = get_errno(shutdown(vptr[0], vptr[1])); + break; + case SOCKOP_sendmsg: + case SOCKOP_recvmsg: + case SOCKOP_setsockopt: + case SOCKOP_getsockopt: + default: + gemu_log("Unsupported socketcall: %d\n", num); + ret = -ENOSYS; + break; + } + return ret; +} + +/* kernel structure types definitions */ +#define IFNAMSIZ 16 + +#define STRUCT(name, list...) STRUCT_ ## name, +#define STRUCT_SPECIAL(name) STRUCT_ ## name, +enum { +#include "syscall_types.h" +}; +#undef STRUCT +#undef STRUCT_SPECIAL + +#define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL }; +#define STRUCT_SPECIAL(name) +#include "syscall_types.h" +#undef STRUCT +#undef STRUCT_SPECIAL + +typedef struct IOCTLEntry { + int target_cmd; + int host_cmd; + const char *name; + int access; + const argtype arg_type[3]; +} IOCTLEntry; + +#define IOC_R 0x0001 +#define IOC_W 0x0002 +#define IOC_RW (IOC_R | IOC_W) + +#define MAX_STRUCT_SIZE 4096 + +const IOCTLEntry ioctl_entries[] = { +#define IOCTL(cmd, access, types...) \ + { TARGET_ ## cmd, cmd, #cmd, access, { types } }, +#include "ioctls.h" + { 0, 0, }, +}; + +static long do_ioctl(long fd, long cmd, long arg) +{ + const IOCTLEntry *ie; + const argtype *arg_type; + long ret; + uint8_t buf_temp[MAX_STRUCT_SIZE]; + + ie = ioctl_entries; + for(;;) { + if (ie->target_cmd == 0) { + gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd); + return -ENOSYS; + } + if (ie->target_cmd == cmd) + break; + ie++; + } + arg_type = ie->arg_type; + // gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name); + switch(arg_type[0]) { + case TYPE_NULL: + /* no argument */ + ret = get_errno(ioctl(fd, ie->host_cmd)); + break; + case TYPE_PTRVOID: + case TYPE_INT: + /* int argment */ + ret = get_errno(ioctl(fd, ie->host_cmd, arg)); + break; + case TYPE_PTR: + arg_type++; + switch(ie->access) { + case IOC_R: + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + if (!is_error(ret)) { + thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET); + } + break; + case IOC_W: + thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST); + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + break; + default: + case IOC_RW: + thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST); + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + if (!is_error(ret)) { + thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET); + } + break; + } + break; + default: + gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]); + ret = -ENOSYS; + break; + } + return ret; +} + +bitmask_transtbl iflag_tbl[] = { + { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, + { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, + { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, + { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, + { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, + { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, + { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, + { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, + { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, + { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, + { TARGET_IXON, TARGET_IXON, IXON, IXON }, + { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, + { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, + { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, + { 0, 0, 0, 0 } +}; + +bitmask_transtbl oflag_tbl[] = { + { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, + { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, + { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, + { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, + { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, + { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, + { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, + { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, + { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, + { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, + { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, + { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, + { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, + { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, + { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, + { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, + { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, + { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, + { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, + { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, + { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, + { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, + { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, + { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, + { 0, 0, 0, 0 } +}; + +bitmask_transtbl cflag_tbl[] = { + { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, + { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, + { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, + { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, + { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, + { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, + { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, + { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, + { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, + { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, + { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, + { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, + { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, + { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, + { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, + { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, + { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, + { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, + { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, + { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, + { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, + { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, + { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, + { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, + { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, + { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, + { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, + { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, + { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, + { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, + { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, + { 0, 0, 0, 0 } +}; + +bitmask_transtbl lflag_tbl[] = { + { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, + { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, + { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, + { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, + { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, + { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, + { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, + { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, + { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, + { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, + { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, + { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, + { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, + { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, + { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, + { 0, 0, 0, 0 } +}; + +static void target_to_host_termios (void *dst, const void *src) +{ + struct host_termios *host = dst; + const struct target_termios *target = src; + + host->c_iflag = + target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); + host->c_oflag = + target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); + host->c_cflag = + target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); + host->c_lflag = + target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); + host->c_line = target->c_line; + + host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; + host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; + host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; + host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; + host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; + host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; + host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; + host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; + host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; + host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; + host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; + host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; + host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; + host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; + host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; + host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; + host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; +} + +static void host_to_target_termios (void *dst, const void *src) +{ + struct target_termios *target = dst; + const struct host_termios *host = src; + + target->c_iflag = + tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); + target->c_oflag = + tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); + target->c_cflag = + tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); + target->c_lflag = + tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); + target->c_line = host->c_line; + + target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; + target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; + target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; + target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; + target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; + target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; + target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; + target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; + target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; + target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; + target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; + target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; + target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; + target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; + target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; + target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; + target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; +} + +StructEntry struct_termios_def = { + .convert = { host_to_target_termios, target_to_host_termios }, + .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, + .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, +}; + +void syscall_init(void) +{ +#define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); +#define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); +#include "syscall_types.h" +#undef STRUCT +#undef STRUCT_SPECIAL +} + +long do_syscall(int num, long arg1, long arg2, long arg3, + long arg4, long arg5, long arg6) +{ + long ret; + struct stat st; + struct statfs *stfs; + + // gemu_log("syscall %d\n", num); + switch(num) { + case TARGET_NR_exit: + _exit(arg1); + ret = 0; /* avoid warning */ + break; + case TARGET_NR_read: + ret = get_errno(read(arg1, (void *)arg2, arg3)); + break; + case TARGET_NR_write: + ret = get_errno(write(arg1, (void *)arg2, arg3)); + break; + case TARGET_NR_open: + ret = get_errno(open((const char *)arg1, arg2, arg3)); + break; + case TARGET_NR_close: + ret = get_errno(close(arg1)); + break; + case TARGET_NR_brk: + ret = do_brk((char *)arg1); + break; + case TARGET_NR_fork: + ret = get_errno(fork()); + break; + case TARGET_NR_waitpid: + { + int *status = (int *)arg2; + ret = get_errno(waitpid(arg1, status, arg3)); + if (!is_error(ret) && status) + tswapls((long *)&status); + } + break; + case TARGET_NR_creat: + ret = get_errno(creat((const char *)arg1, arg2)); + break; + case TARGET_NR_link: + ret = get_errno(link((const char *)arg1, (const char *)arg2)); + break; + case TARGET_NR_unlink: + ret = get_errno(unlink((const char *)arg1)); + break; + case TARGET_NR_execve: + ret = get_errno(execve((const char *)arg1, (void *)arg2, (void *)arg3)); + break; + case TARGET_NR_chdir: + ret = get_errno(chdir((const char *)arg1)); + break; + case TARGET_NR_time: + { + int *time_ptr = (int *)arg1; + ret = get_errno(time((time_t *)time_ptr)); + if (!is_error(ret) && time_ptr) + tswap32s(time_ptr); + } + break; + case TARGET_NR_mknod: + ret = get_errno(mknod((const char *)arg1, arg2, arg3)); + break; + case TARGET_NR_chmod: + ret = get_errno(chmod((const char *)arg1, arg2)); + break; + case TARGET_NR_lchown: + ret = get_errno(chown((const char *)arg1, arg2, arg3)); + break; + case TARGET_NR_break: + goto unimplemented; + case TARGET_NR_oldstat: + goto unimplemented; + case TARGET_NR_lseek: + ret = get_errno(lseek(arg1, arg2, arg3)); + break; + case TARGET_NR_getpid: + ret = get_errno(getpid()); + break; + case TARGET_NR_mount: + /* need to look at the data field */ + goto unimplemented; + case TARGET_NR_umount: + ret = get_errno(umount((const char *)arg1)); + break; + case TARGET_NR_setuid: + ret = get_errno(setuid(arg1)); + break; + case TARGET_NR_getuid: + ret = get_errno(getuid()); + break; + case TARGET_NR_stime: + { + int *time_ptr = (int *)arg1; + if (time_ptr) + tswap32s(time_ptr); + ret = get_errno(stime((time_t *)time_ptr)); + } + break; + case TARGET_NR_ptrace: + goto unimplemented; + case TARGET_NR_alarm: + ret = alarm(arg1); + break; + case TARGET_NR_oldfstat: + goto unimplemented; + case TARGET_NR_pause: + ret = get_errno(pause()); + break; + case TARGET_NR_utime: + goto unimplemented; + case TARGET_NR_stty: + goto unimplemented; + case TARGET_NR_gtty: + goto unimplemented; + case TARGET_NR_access: + ret = get_errno(access((const char *)arg1, arg2)); + break; + case TARGET_NR_nice: + ret = get_errno(nice(arg1)); + break; + case TARGET_NR_ftime: + goto unimplemented; + case TARGET_NR_sync: + ret = get_errno(sync()); + break; + case TARGET_NR_kill: + ret = get_errno(kill(arg1, arg2)); + break; + case TARGET_NR_rename: + ret = get_errno(rename((const char *)arg1, (const char *)arg2)); + break; + case TARGET_NR_mkdir: + ret = get_errno(mkdir((const char *)arg1, arg2)); + break; + case TARGET_NR_rmdir: + ret = get_errno(rmdir((const char *)arg1)); + break; + case TARGET_NR_dup: + ret = get_errno(dup(arg1)); + break; + case TARGET_NR_pipe: + { + int *pipe_ptr = (int *)arg1; + ret = get_errno(pipe(pipe_ptr)); + if (!is_error(ret)) { + tswap32s(&pipe_ptr[0]); + tswap32s(&pipe_ptr[1]); + } + } + break; + case TARGET_NR_times: + goto unimplemented; + case TARGET_NR_prof: + goto unimplemented; + case TARGET_NR_setgid: + ret = get_errno(setgid(arg1)); + break; + case TARGET_NR_getgid: + ret = get_errno(getgid()); + break; + case TARGET_NR_signal: + goto unimplemented; + case TARGET_NR_geteuid: + ret = get_errno(geteuid()); + break; + case TARGET_NR_getegid: + ret = get_errno(getegid()); + break; + case TARGET_NR_acct: + goto unimplemented; + case TARGET_NR_umount2: + ret = get_errno(umount2((const char *)arg1, arg2)); + break; + case TARGET_NR_lock: + goto unimplemented; + case TARGET_NR_ioctl: + ret = do_ioctl(arg1, arg2, arg3); + break; + case TARGET_NR_fcntl: + switch(arg2) { + case F_GETLK: + case F_SETLK: + case F_SETLKW: + goto unimplemented; + default: + ret = get_errno(fcntl(arg1, arg2, arg3)); + break; + } + break; + case TARGET_NR_mpx: + goto unimplemented; + case TARGET_NR_setpgid: + ret = get_errno(setpgid(arg1, arg2)); + break; + case TARGET_NR_ulimit: + goto unimplemented; + case TARGET_NR_oldolduname: + goto unimplemented; + case TARGET_NR_umask: + ret = get_errno(umask(arg1)); + break; + case TARGET_NR_chroot: + ret = get_errno(chroot((const char *)arg1)); + break; + case TARGET_NR_ustat: + goto unimplemented; + case TARGET_NR_dup2: + ret = get_errno(dup2(arg1, arg2)); + break; + case TARGET_NR_getppid: + ret = get_errno(getppid()); + break; + case TARGET_NR_getpgrp: + ret = get_errno(getpgrp()); + break; + case TARGET_NR_setsid: + ret = get_errno(setsid()); + break; + case TARGET_NR_sigaction: +#if 0 + { + int signum = arg1; + struct target_old_sigaction *tact = arg2, *toldact = arg3; + ret = get_errno(setsid()); + + + } + break; +#else + goto unimplemented; +#endif + case TARGET_NR_sgetmask: + goto unimplemented; + case TARGET_NR_ssetmask: + goto unimplemented; + case TARGET_NR_setreuid: + ret = get_errno(setreuid(arg1, arg2)); + break; + case TARGET_NR_setregid: + ret = get_errno(setregid(arg1, arg2)); + break; + case TARGET_NR_sigsuspend: + goto unimplemented; + case TARGET_NR_sigpending: + goto unimplemented; + case TARGET_NR_sethostname: + ret = get_errno(sethostname((const char *)arg1, arg2)); + break; + case TARGET_NR_setrlimit: + goto unimplemented; + case TARGET_NR_getrlimit: + goto unimplemented; + case TARGET_NR_getrusage: + goto unimplemented; + case TARGET_NR_gettimeofday: + { + struct target_timeval *target_tv = (void *)arg1; + struct timeval tv; + ret = get_errno(gettimeofday(&tv, NULL)); + if (!is_error(ret)) { + target_tv->tv_sec = tswapl(tv.tv_sec); + target_tv->tv_usec = tswapl(tv.tv_usec); + } + } + break; + case TARGET_NR_settimeofday: + { + struct target_timeval *target_tv = (void *)arg1; + struct timeval tv; + tv.tv_sec = tswapl(target_tv->tv_sec); + tv.tv_usec = tswapl(target_tv->tv_usec); + ret = get_errno(settimeofday(&tv, NULL)); + } + break; + case TARGET_NR_getgroups: + goto unimplemented; + case TARGET_NR_setgroups: + goto unimplemented; + case TARGET_NR_select: + goto unimplemented; + case TARGET_NR_symlink: + ret = get_errno(symlink((const char *)arg1, (const char *)arg2)); + break; + case TARGET_NR_oldlstat: + goto unimplemented; + case TARGET_NR_readlink: + ret = get_errno(readlink((const char *)arg1, (char *)arg2, arg3)); + break; + case TARGET_NR_uselib: + goto unimplemented; + case TARGET_NR_swapon: + ret = get_errno(swapon((const char *)arg1, arg2)); + break; + case TARGET_NR_reboot: + goto unimplemented; + case TARGET_NR_readdir: + goto unimplemented; +#ifdef TARGET_I386 + case TARGET_NR_mmap: + { + uint32_t v1, v2, v3, v4, v5, v6, *vptr; + vptr = (uint32_t *)arg1; + v1 = tswap32(vptr[0]); + v2 = tswap32(vptr[1]); + v3 = tswap32(vptr[2]); + v4 = tswap32(vptr[3]); + v5 = tswap32(vptr[4]); + v6 = tswap32(vptr[5]); + ret = get_errno((long)mmap((void *)v1, v2, v3, v4, v5, v6)); + } + break; +#endif +#ifdef TARGET_I386 + case TARGET_NR_mmap2: +#else + case TARGET_NR_mmap: +#endif + ret = get_errno((long)mmap((void *)arg1, arg2, arg3, arg4, arg5, arg6)); + break; + case TARGET_NR_munmap: + ret = get_errno(munmap((void *)arg1, arg2)); + break; + case TARGET_NR_truncate: + ret = get_errno(truncate((const char *)arg1, arg2)); + break; + case TARGET_NR_ftruncate: + ret = get_errno(ftruncate(arg1, arg2)); + break; + case TARGET_NR_fchmod: + ret = get_errno(fchmod(arg1, arg2)); + break; + case TARGET_NR_fchown: + ret = get_errno(fchown(arg1, arg2, arg3)); + break; + case TARGET_NR_getpriority: + ret = get_errno(getpriority(arg1, arg2)); + break; + case TARGET_NR_setpriority: + ret = get_errno(setpriority(arg1, arg2, arg3)); + break; + case TARGET_NR_profil: + goto unimplemented; + case TARGET_NR_statfs: + stfs = (void *)arg2; + ret = get_errno(sys_statfs((const char *)arg1, stfs)); + convert_statfs: + if (!is_error(ret)) { + tswap32s(&stfs->f_type); + tswap32s(&stfs->f_bsize); + tswap32s(&stfs->f_blocks); + tswap32s(&stfs->f_bfree); + tswap32s(&stfs->f_bavail); + tswap32s(&stfs->f_files); + tswap32s(&stfs->f_ffree); + tswap32s(&stfs->f_fsid.val[0]); + tswap32s(&stfs->f_fsid.val[1]); + tswap32s(&stfs->f_namelen); + } + break; + case TARGET_NR_fstatfs: + stfs = (void *)arg2; + ret = get_errno(sys_fstatfs(arg1, stfs)); + goto convert_statfs; + case TARGET_NR_ioperm: + goto unimplemented; + case TARGET_NR_socketcall: + ret = do_socketcall(arg1, (long *)arg2); + break; + case TARGET_NR_syslog: + goto unimplemented; + case TARGET_NR_setitimer: + goto unimplemented; + case TARGET_NR_getitimer: + goto unimplemented; + case TARGET_NR_stat: + ret = get_errno(stat((const char *)arg1, &st)); + goto do_stat; + case TARGET_NR_lstat: + ret = get_errno(lstat((const char *)arg1, &st)); + goto do_stat; + case TARGET_NR_fstat: + { + ret = get_errno(fstat(arg1, &st)); + do_stat: + if (!is_error(ret)) { + struct target_stat *target_st = (void *)arg2; + target_st->st_dev = tswap16(st.st_dev); + target_st->st_ino = tswapl(st.st_ino); + target_st->st_mode = tswap16(st.st_mode); + target_st->st_nlink = tswap16(st.st_nlink); + target_st->st_uid = tswap16(st.st_uid); + target_st->st_gid = tswap16(st.st_gid); + target_st->st_rdev = tswap16(st.st_rdev); + target_st->st_size = tswapl(st.st_size); + target_st->st_blksize = tswapl(st.st_blksize); + target_st->st_blocks = tswapl(st.st_blocks); + target_st->st_atime = tswapl(st.st_atime); + target_st->st_mtime = tswapl(st.st_mtime); + target_st->st_ctime = tswapl(st.st_ctime); + } + } + break; + case TARGET_NR_olduname: + goto unimplemented; + case TARGET_NR_iopl: + goto unimplemented; + case TARGET_NR_vhangup: + ret = get_errno(vhangup()); + break; + case TARGET_NR_idle: + goto unimplemented; + case TARGET_NR_vm86old: + goto unimplemented; + case TARGET_NR_wait4: + { + int status; + target_long *status_ptr = (void *)arg2; + struct rusage rusage, *rusage_ptr; + struct target_rusage *target_rusage = (void *)arg4; + if (target_rusage) + rusage_ptr = &rusage; + else + rusage_ptr = NULL; + ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr)); + if (!is_error(ret)) { + if (status_ptr) + *status_ptr = tswap32(status); + if (target_rusage) { + target_rusage->ru_utime.tv_sec = tswapl(rusage.ru_utime.tv_sec); + target_rusage->ru_utime.tv_usec = tswapl(rusage.ru_utime.tv_usec); + target_rusage->ru_stime.tv_sec = tswapl(rusage.ru_stime.tv_sec); + target_rusage->ru_stime.tv_usec = tswapl(rusage.ru_stime.tv_usec); + target_rusage->ru_maxrss = tswapl(rusage.ru_maxrss); + target_rusage->ru_ixrss = tswapl(rusage.ru_ixrss); + target_rusage->ru_idrss = tswapl(rusage.ru_idrss); + target_rusage->ru_isrss = tswapl(rusage.ru_isrss); + target_rusage->ru_minflt = tswapl(rusage.ru_minflt); + target_rusage->ru_majflt = tswapl(rusage.ru_majflt); + target_rusage->ru_nswap = tswapl(rusage.ru_nswap); + target_rusage->ru_inblock = tswapl(rusage.ru_inblock); + target_rusage->ru_oublock = tswapl(rusage.ru_oublock); + target_rusage->ru_msgsnd = tswapl(rusage.ru_msgsnd); + target_rusage->ru_msgrcv = tswapl(rusage.ru_msgrcv); + target_rusage->ru_nsignals = tswapl(rusage.ru_nsignals); + target_rusage->ru_nvcsw = tswapl(rusage.ru_nvcsw); + target_rusage->ru_nivcsw = tswapl(rusage.ru_nivcsw); + } + } + } + break; + case TARGET_NR_swapoff: + ret = get_errno(swapoff((const char *)arg1)); + break; + case TARGET_NR_sysinfo: + goto unimplemented; + case TARGET_NR_ipc: + goto unimplemented; + case TARGET_NR_fsync: + ret = get_errno(fsync(arg1)); + break; + case TARGET_NR_sigreturn: + goto unimplemented; + case TARGET_NR_clone: + goto unimplemented; + case TARGET_NR_setdomainname: + ret = get_errno(setdomainname((const char *)arg1, arg2)); + break; + case TARGET_NR_uname: + /* no need to transcode because we use the linux syscall */ + ret = get_errno(sys_uname((struct new_utsname *)arg1)); + break; + case TARGET_NR_modify_ldt: + goto unimplemented; + case TARGET_NR_adjtimex: + goto unimplemented; + case TARGET_NR_mprotect: + ret = get_errno(mprotect((void *)arg1, arg2, arg3)); + break; + case TARGET_NR_sigprocmask: + { + int how = arg1; + sigset_t set, oldset, *set_ptr; + target_ulong *pset = (void *)arg2, *poldset = (void *)arg3; + + switch(how) { + case TARGET_SIG_BLOCK: + how = SIG_BLOCK; + break; + case TARGET_SIG_UNBLOCK: + how = SIG_UNBLOCK; + break; + case TARGET_SIG_SETMASK: + how = SIG_SETMASK; + break; + default: + ret = -EINVAL; + goto fail; + } + + if (pset) { + target_to_host_old_sigset(&set, pset); + set_ptr = &set; + } else { + set_ptr = NULL; + } + ret = get_errno(sigprocmask(arg1, set_ptr, &oldset)); + if (!is_error(ret) && poldset) { + host_to_target_old_sigset(poldset, &oldset); + } + } + break; + case TARGET_NR_create_module: + case TARGET_NR_init_module: + case TARGET_NR_delete_module: + case TARGET_NR_get_kernel_syms: + goto unimplemented; + case TARGET_NR_quotactl: + goto unimplemented; + case TARGET_NR_getpgid: + ret = get_errno(getpgid(arg1)); + break; + case TARGET_NR_fchdir: + ret = get_errno(fchdir(arg1)); + break; + case TARGET_NR_bdflush: + goto unimplemented; + case TARGET_NR_sysfs: + goto unimplemented; + case TARGET_NR_personality: + ret = get_errno(mprotect((void *)arg1, arg2, arg3)); + break; + case TARGET_NR_afs_syscall: + goto unimplemented; + case TARGET_NR_setfsuid: + goto unimplemented; + case TARGET_NR_setfsgid: + goto unimplemented; + case TARGET_NR__llseek: + { + int64_t res; + ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); + *(int64_t *)arg4 = tswap64(res); + } + break; + case TARGET_NR_getdents: +#if TARGET_LONG_SIZE != 4 +#error not supported +#endif + { + struct dirent *dirp = (void *)arg2; + long count = arg3; + ret = get_errno(getdents(arg1, dirp, count)); + if (!is_error(ret)) { + struct dirent *de; + int len = ret; + int reclen; + de = dirp; + while (len > 0) { + reclen = tswap16(de->d_reclen); + if (reclen > len) + break; + de->d_reclen = reclen; + tswapls(&de->d_ino); + tswapls(&de->d_off); + de = (struct dirent *)((char *)de + reclen); + len -= reclen; + } + } + } + break; + case TARGET_NR__newselect: + ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4, + (void *)arg5); + break; + case TARGET_NR_flock: + goto unimplemented; + case TARGET_NR_msync: + ret = get_errno(msync((void *)arg1, arg2, arg3)); + break; + case TARGET_NR_readv: + { + int count = arg3; + int i; + struct iovec *vec; + struct target_iovec *target_vec = (void *)arg2; + + vec = alloca(count * sizeof(struct iovec)); + for(i = 0;i < count; i++) { + vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base); + vec[i].iov_len = tswapl(target_vec[i].iov_len); + } + ret = get_errno(readv(arg1, vec, count)); + } + break; + case TARGET_NR_writev: + { + int count = arg3; + int i; + struct iovec *vec; + struct target_iovec *target_vec = (void *)arg2; + + vec = alloca(count * sizeof(struct iovec)); + for(i = 0;i < count; i++) { + vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base); + vec[i].iov_len = tswapl(target_vec[i].iov_len); + } + ret = get_errno(writev(arg1, vec, count)); + } + break; + case TARGET_NR_getsid: + ret = get_errno(getsid(arg1)); + break; + case TARGET_NR_fdatasync: + goto unimplemented; + case TARGET_NR__sysctl: + goto unimplemented; + case TARGET_NR_mlock: + ret = get_errno(mlock((void *)arg1, arg2)); + break; + case TARGET_NR_munlock: + ret = get_errno(munlock((void *)arg1, arg2)); + break; + case TARGET_NR_mlockall: + ret = get_errno(mlockall(arg1)); + break; + case TARGET_NR_munlockall: + ret = get_errno(munlockall()); + break; + case TARGET_NR_sched_setparam: + goto unimplemented; + case TARGET_NR_sched_getparam: + goto unimplemented; + case TARGET_NR_sched_setscheduler: + goto unimplemented; + case TARGET_NR_sched_getscheduler: + goto unimplemented; + case TARGET_NR_sched_yield: + ret = get_errno(sched_yield()); + break; + case TARGET_NR_sched_get_priority_max: + case TARGET_NR_sched_get_priority_min: + case TARGET_NR_sched_rr_get_interval: + case TARGET_NR_nanosleep: + case TARGET_NR_mremap: + case TARGET_NR_setresuid: + case TARGET_NR_getresuid: + case TARGET_NR_vm86: + case TARGET_NR_query_module: + case TARGET_NR_poll: + case TARGET_NR_nfsservctl: + case TARGET_NR_setresgid: + case TARGET_NR_getresgid: + case TARGET_NR_prctl: + case TARGET_NR_rt_sigreturn: + case TARGET_NR_rt_sigaction: + case TARGET_NR_rt_sigprocmask: + case TARGET_NR_rt_sigpending: + case TARGET_NR_rt_sigtimedwait: + case TARGET_NR_rt_sigqueueinfo: + case TARGET_NR_rt_sigsuspend: + case TARGET_NR_pread: + case TARGET_NR_pwrite: + goto unimplemented; + case TARGET_NR_chown: + ret = get_errno(chown((const char *)arg1, arg2, arg3)); + break; + case TARGET_NR_getcwd: + ret = get_errno(sys_getcwd((char *)arg1, arg2)); + break; + case TARGET_NR_capget: + case TARGET_NR_capset: + case TARGET_NR_sigaltstack: + case TARGET_NR_sendfile: + case TARGET_NR_getpmsg: + case TARGET_NR_putpmsg: + case TARGET_NR_vfork: + ret = get_errno(vfork()); + break; + case TARGET_NR_ugetrlimit: + case TARGET_NR_truncate64: + case TARGET_NR_ftruncate64: + case TARGET_NR_stat64: + case TARGET_NR_lstat64: + case TARGET_NR_fstat64: + case TARGET_NR_lchown32: + case TARGET_NR_getuid32: + case TARGET_NR_getgid32: + case TARGET_NR_geteuid32: + case TARGET_NR_getegid32: + case TARGET_NR_setreuid32: + case TARGET_NR_setregid32: + case TARGET_NR_getgroups32: + case TARGET_NR_setgroups32: + case TARGET_NR_fchown32: + case TARGET_NR_setresuid32: + case TARGET_NR_getresuid32: + case TARGET_NR_setresgid32: + case TARGET_NR_getresgid32: + case TARGET_NR_chown32: + case TARGET_NR_setuid32: + case TARGET_NR_setgid32: + case TARGET_NR_setfsuid32: + case TARGET_NR_setfsgid32: + case TARGET_NR_pivot_root: + case TARGET_NR_mincore: + case TARGET_NR_madvise: + case TARGET_NR_getdents64: + case TARGET_NR_fcntl64: + case TARGET_NR_security: + goto unimplemented; + case TARGET_NR_gettid: + ret = get_errno(gettid()); + break; + case TARGET_NR_readahead: + case TARGET_NR_setxattr: + case TARGET_NR_lsetxattr: + case TARGET_NR_fsetxattr: + case TARGET_NR_getxattr: + case TARGET_NR_lgetxattr: + case TARGET_NR_fgetxattr: + case TARGET_NR_listxattr: + case TARGET_NR_llistxattr: + case TARGET_NR_flistxattr: + case TARGET_NR_removexattr: + case TARGET_NR_lremovexattr: + case TARGET_NR_fremovexattr: + goto unimplemented; + default: + unimplemented: + gemu_log("Unsupported syscall: %d\n", num); + ret = -ENOSYS; + break; + } + fail: + return ret; +} + |