asm.h revision 1.2
1/* $NetBSD: asm.h,v 1.2 2003/05/02 18:05:47 yamt Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)asm.h 5.5 (Berkeley) 5/7/91 39 */ 40 41#ifndef _AMD64_ASM_H_ 42#define _AMD64_ASM_H_ 43 44#ifdef PIC 45#define PIC_PLT(x) x@PLT 46#define PIC_GOT(x) x@GOTPCREL(%rip) 47#else 48#define PIC_PLT(x) x 49#define PIC_GOT(x) x 50#endif 51 52# define _C_LABEL(x) x 53#define _ASM_LABEL(x) x 54 55#define CVAROFF(x,y) (_C_LABEL(x)+y)(%rip) 56 57#ifdef __STDC__ 58# define __CONCAT(x,y) x ## y 59# define __STRING(x) #x 60#else 61# define __CONCAT(x,y) x/**/y 62# define __STRING(x) "x" 63#endif 64 65/* let kernels and others override entrypoint alignment */ 66#ifndef _ALIGN_TEXT 67#define _ALIGN_TEXT .align 4 68#endif 69 70#define _ENTRY(x) \ 71 .text; _ALIGN_TEXT; .globl x; .type x,@function; x: 72 73#ifdef _KERNEL 74/* XXX Can't use __CONCAT() here, as it would be evaluated incorrectly. */ 75#ifdef __STDC__ 76#define IDTVEC(name) \ 77 ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name: 78#else 79#define IDTVEC(name) \ 80 ALIGN_TEXT; .globl X/**/name; .type X/**/name,@function; X/**/name: 81#endif /* __STDC__ */ 82#endif /* _KERNEL */ 83 84#ifdef __STDC__ 85#define CPUVAR(off) %gs:CPU_INFO_ ## off 86#else 87#define CPUVAR(off) %gs:CPU_INFO_/**/off 88#endif 89 90 91#ifdef GPROF 92# define _PROF_PROLOGUE \ 93 pushq %rbp; leaq (%rsp),%rbp; call PIC_PLT(__mcount); popq %rbp 94#else 95# define _PROF_PROLOGUE 96#endif 97 98#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 99#define NENTRY(y) _ENTRY(_C_LABEL(y)) 100#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 101 102#define ASMSTR .asciz 103 104#define RCSID(x) .text; .asciz x 105 106#define WEAK_ALIAS(alias,sym) \ 107 .weak alias; \ 108 alias = sym 109 110/* XXXfvdl do not use stabs here */ 111#ifdef __STDC__ 112#define WARN_REFERENCES(sym,msg) \ 113 .stabs msg ## ,30,0,0,0 ; \ 114 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 115#else 116#define WARN_REFERENCES(sym,msg) \ 117 .stabs msg,30,0,0,0 ; \ 118 .stabs __STRING(sym),1,0,0,0 119#endif /* __STDC__ */ 120 121#endif /* !_AMD64_ASM_H_ */ 122