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