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|
/* $OpenBSD: syscall.h,v 1.11 2013/06/09 13:10:19 miod Exp $ */
/*
* Copyright (c) 1998-2002 Opsycon AB, Sweden.
*
* 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 <sys/stat.h>
#include <sys/syscall.h>
#include <sys/signal.h>
extern long _dl__syscall(quad_t val, ...);
#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.
*/
extern inline void
_dl_exit(int status)
{
register int __status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"li $2,%1\n\t"
"syscall"
: "=r" (__status)
: "I" (SYS_exit), "r" (status)
: "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
while (1)
;
}
extern inline int
_dl_open(const char* addr, int flags)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_open), "r" (addr), "r" (flags)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_close(int fd)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_close), "r" (fd)
: "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline ssize_t
_dl_write(int fd, const char* buf, size_t len)
{
register ssize_t status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_write), "r" (fd), "r" (buf), "r" (len)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline ssize_t
_dl_read(int fd, const char* buf, size_t len)
{
register ssize_t status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_read), "r" (fd), "r" (buf), "r" (len)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern 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));
}
extern inline int
_dl_munmap(const void* addr, size_t len)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_munmap), "r" (addr), "r" (len)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_mprotect(const void *addr, size_t size, int prot)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"li $2,%1\n\t"
"syscall"
: "=r" (status)
: "I" (SYS_mprotect), "r" (addr), "r" (size), "r" (prot)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_fstat(const int fd, struct stat *sb)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall"
: "=r" (status)
: "I" (SYS_fstat), "r" (fd), "r" (sb)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline ssize_t
_dl_fcntl(int fd, int cmd, int flag)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_fcntl), "r" (fd), "r" (cmd), "r" (flag)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline ssize_t
_dl_getdirentries(int fd, char *buf, int nbytes, off_t *basep)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"move $7,%5\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_getdirentries), "r" (fd), "r" (buf), "r" (nbytes), "r" (basep)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_issetugid(void)
{
register int status __asm__ ("$2");
__asm__ volatile (
"li $2,%1\n\t"
"syscall"
: "=r" (status)
: "I" (SYS_issetugid)
: "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline off_t
_dl_lseek(int fd, off_t offset, int whence)
{
return _dl__syscall((quad_t)SYS_lseek, fd, 0, offset, whence);
}
extern 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 (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"move %0, $2"
: "=r" (sig_store)
: "I" (SYS_sigprocmask), "r" (how), "r" (sig_store1)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
if (oset != NULL)
*oset = sig_store;
return 0;
}
static inline int
_dl_sysctl(const int *name, u_int namelen, void *oldp, size_t *oldplen,
void *newp, size_t newlen)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"move $7,%5\n\t"
"move $8,%6\n\t"
"move $9,%7\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beqz $2,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS___sysctl), "r" (name), "r" (namelen), "r" (oldp),
"r" (oldplen), "r" (newp), "r" (newlen)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_gettimeofday(struct timeval* tp, struct timezone *tzp)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_gettimeofday), "r" (tp), "r" (tzp)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_readlink(const char *path, char *buf, size_t bufsiz)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_readlink), "r" (path), "r" (buf), "r" (bufsiz)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_lstat(const char *path, struct stat *sb)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_lstat), "r" (path), "r" (sb)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
static inline int
_dl_getcwd(char *buf, size_t size)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS___getcwd), "r" (buf), "r" (size)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
extern inline int
_dl_utrace(const char *label, const void *addr, size_t len)
{
register int status __asm__ ("$2");
__asm__ volatile (
"move $4,%2\n\t"
"move $5,%3\n\t"
"move $6,%4\n\t"
"li $2,%1\n\t"
"syscall\n\t"
"beq $7,$0,1f\n\t"
"li $2,-1\n\t"
"1:"
: "=r" (status)
: "I" (SYS_utrace), "r" (label), "r" (addr), "r" (len)
: "memory", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
"$10","$11","$12","$13","$14","$15","$24","$25");
return status;
}
#endif /*__DL_SYSCALL_H__*/
|
