/* * libc/sysdeps/linux/nios2/syscall.c -- generic syscall function for linux/nios2 * * Copyright (C) 2004 Microtronix Datacom Ltd. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Library 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 Library General Public License * for more details. * * You should have received a copy of the GNU Library General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <features.h> #include <errno.h> #include <sys/types.h> #include <sys/syscall.h> long syscall(long sysnum, long a, long b, long c, long d, long e, long f) { register long _r2 asm("r2")=(long)TRAP_ID_SYSCALL; register long _r3 asm("r3")=(long)sysnum; register long _r4 asm("r4")=(long)(a); register long _r5 asm("r5")=(long)(b); register long _r6 asm("r6")=(long)(c); register long _r7 asm("r7")=(long)(d); register long _r8 asm("r8")=(long)(e); register long _r9 asm("r9")=(long)(f); asm volatile( "trap " : "=r"(_r2), "=r"(_r3) : "0"(_r2), "1"(_r3), "r"(_r4), "r"(_r5), "r"(_r6), "r"(_r7), "r"(_r8), "r"(_r9) : "memory"); __syscall_return (long, _r2); }