/* $OpenBSD: syscall.h,v 1.25 2013/04/05 12:58:03 kurt Exp $ */ /* * Copyright (c) 1998 Per Fogelstrom, Opsycon AB * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifndef __DL_SYSCALL_H__ #define __DL_SYSCALL_H__ #include #include #include #include static off_t _dl_lseek(int, off_t, int); #ifndef _dl_MAX_ERRNO #define _dl_MAX_ERRNO 512L #endif #define _dl_mmap_error(__res) \ ((long)__res < 0 && (long)__res >= -_dl_MAX_ERRNO) /* * Inlined system call functions that can be used before * any dynamic address resolving has been done. */ static inline void _dl_exit(int status) { register int __status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "sc" : "=r" (__status) : "I" (SYS_exit), "r" (status) : "0", "3"); while (1) ; } static inline int _dl_open(const char* addr, int flags) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_open), "r" (addr), "r" (flags) : "memory", "0", "3", "4" ); return status; } static inline int _dl_close(int fd) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_close), "r" (fd) : "0", "3"); return status; } static inline ssize_t _dl_write(int fd, const char* buf, size_t len) { register ssize_t status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_write), "r" (fd), "r" (buf), "r" (len) : "memory", "0", "3", "4", "5" ); return status; } static inline ssize_t _dl_read(int fd, const char* buf, size_t len) { register ssize_t status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_read), "r" (fd), "r" (buf), "r" (len) : "memory", "0", "3", "4", "5"); return status; } #define STRINGIFY(x) #x #define XSTRINGIFY(x) STRINGIFY(x) long _dl__syscall(quad_t val, ...); static inline void * _dl_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset) { return((void *)_dl__syscall((quad_t)SYS_mmap, addr, len, prot, flags, fd, 0, offset)); } static inline int _dl_munmap(const void* addr, size_t len) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_munmap), "r" (addr), "r" (len) : "memory", "0", "3", "4"); return status; } static inline int _dl_mprotect(const void *addr, size_t size, int prot) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_mprotect), "r" (addr), "r" (size), "r" (prot) : "memory", "0", "3", "4", "5"); return status; } static inline int _dl_fstat(int fd, struct stat *sb) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_fstat), "r" (fd), "r" (sb) : "memory", "0", "3", "4"); return status; } static inline int _dl_fcntl(int fd, int cmd, int flag) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" : "=r" (status) : "I" (SYS_fcntl), "r" (fd), "r" (cmd), "r"(flag) : "memory", "0", "3", "4", "5"); return status; } static inline int _dl_getdirentries(int fd, char *buf, int nbytes, off_t *basep) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "mr 6,%5\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_getdirentries), "r" (fd), "r" (buf), "r"(nbytes), "r" (basep) : "memory", "0", "3", "4", "5", "6"); return status; } static inline int _dl_issetugid(void) { register int status; __asm__ volatile ("li 0,%1\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_issetugid) : "0", "3"); return status; } static inline off_t _dl_lseek(int fildes, off_t offset, int whence) { return _dl__syscall((quad_t)SYS_lseek, fildes, 0, offset, whence); } static inline int _dl_sigprocmask(int how, const sigset_t *set, sigset_t *oset) { sigset_t sig_store; sigset_t sig_store1; if (set != NULL) { sig_store1 = *set; } else { sig_store1 = 0; } __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "mr %0, 3" : "=r" (sig_store) : "I" (SYS_sigprocmask), "r" (how), "r" (sig_store1) : "memory", "0", "3", "4"); if (oset != NULL) *oset = sig_store; return 0; } static inline int _dl_sysctl(int *name, u_int namelen, void *oldp, size_t *oldplen, void *newp, size_t newlen) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "mr 6,%5\n\t" "mr 7,%6\n\t" "mr 8,%7\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS___sysctl), "r" (name), "r" (namelen), "r" (oldp), "r" (oldplen), "r" (newp), "r" (newlen) : "memory", "0", "3", "4", "5", "6", "7", "8"); return status; } static inline int _dl_gettimeofday(struct timeval *tp, struct timezone *tzp) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_gettimeofday), "r" (tp), "r" (tzp) : "memory", "0", "3", "4" ); return status; } static inline int _dl_readlink(const char *path, char *buf, size_t bufsiz) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "mr 5,%4\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_readlink), "r" (path), "r" (buf), "r" (bufsiz) : "memory", "0", "3", "4", "5"); return status; } static inline int _dl_lstat(const char *path, struct stat *sb) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS_lstat), "r" (path), "r" (sb) : "memory", "0", "3", "4" ); return status; } static inline int _dl_getcwd(char *buf, size_t size) { register int status; __asm__ volatile ("li 0,%1\n\t" "mr 3,%2\n\t" "mr 4,%3\n\t" "sc\n\t" "cmpwi 0, 0\n\t" "beq 1f\n\t" "li 3,-1\n\t" "1:" "mr %0,3\n\t" : "=r" (status) : "I" (SYS___getcwd), "r" (buf), "r" (size) : "0", "3", "4"); return status; } #endif /*__DL_SYSCALL_H__*/