/* $NetBSD: SYS.h,v 1.25 2014/05/23 02:17:43 uebayasi Exp $ */ /*- * Copyright (c) 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 */ #include <machine/asm.h> #include <sys/syscall.h> #ifdef __STDC__ #define _SYSNAM(x) $(SYS_ ## x) #else #define _SYSNAM(x) $(SYS_/**/x) #endif #define OSYSTRAP(x) \ movl _SYSNAM(x),%eax ;\ int $0x80 #ifdef I686_LIBC #define SYSTRAP(x) \ pushl %ebx ;\ movl _SYSNAM(x),%eax ;\ movl $123f,%edx ;\ movl %esp,%ecx ;\ sysenter ;\ 123: movl %ebx,%edx ;\ popl %ebx #else /* I686_LIBC */ #define SYSTRAP(x) OSYSTRAP(x) #endif /* I686_LIBC */ #ifdef __ELF__ #define CERROR _C_LABEL(__cerror) #define CURBRK _C_LABEL(__curbrk) #else #define CERROR _ASM_LABEL(cerror) #define CURBRK _ASM_LABEL(curbrk) #endif #define _SYSCALL_NOERROR(x,y) \ ENTRY(x); \ SYSTRAP(y) #ifdef __PIC__ #define _SYSCALL_ERR \ PIC_PROLOGUE; \ mov PIC_GOT(CERROR), %ecx; \ PIC_EPILOGUE; \ jmp *%ecx #else #define _SYSCALL_ERR \ jmp CERROR #endif #define _SYSCALL(x,y) \ .text; _ALIGN_TEXT; \ 2: _SYSCALL_ERR; \ _SYSCALL_NOERROR(x,y); \ jc 2b #define SYSCALL_NOERROR(x) \ _SYSCALL_NOERROR(x,x) #define SYSCALL(x) \ _SYSCALL(x,x) #define PSEUDO_NOERROR(x,y) \ _SYSCALL_NOERROR(x,y); \ ret; \ END(x) #define PSEUDO(x,y) \ _SYSCALL_NOERROR(x,y); \ jc 2f; \ ret; \ 2: _SYSCALL_ERR; \ END(x) #define RSYSCALL_NOERROR(x) \ PSEUDO_NOERROR(x,x) #define RSYSCALL(x) \ PSEUDO(x,x) #ifdef WEAK_ALIAS #define WSYSCALL(weak,strong) \ WEAK_ALIAS(weak,strong); \ PSEUDO(strong,weak) #else #define WSYSCALL(weak,strong) \ PSEUDO(weak,weak) #endif .globl CERROR
