1 /* $OpenBSD: asm.h,v 1.6 2015/05/13 05:29:57 uebayasi Exp $ */ 2 /* $NetBSD: asm.h,v 1.2 2003/05/02 18:05:47 yamt Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)asm.h 5.5 (Berkeley) 5/7/91 36 */ 37 38 #ifndef _MACHINE_ASM_H_ 39 #define _MACHINE_ASM_H_ 40 41 #ifdef __PIC__ 42 #define PIC_PLT(x) x@PLT 43 #define PIC_GOT(x) x@GOTPCREL(%rip) 44 #else 45 #define PIC_PLT(x) x 46 #define PIC_GOT(x) x 47 #endif 48 49 # define _C_LABEL(x) x 50 #define _ASM_LABEL(x) x 51 52 #define CVAROFF(x,y) (_C_LABEL(x)+y)(%rip) 53 54 #ifdef __STDC__ 55 # define __CONCAT(x,y) x ## y 56 # define __STRING(x) #x 57 #else 58 # define __CONCAT(x,y) x/**/y 59 # define __STRING(x) "x" 60 #endif 61 62 /* let kernels and others override entrypoint alignment */ 63 #ifndef _ALIGN_TEXT 64 #define _ALIGN_TEXT .align 16, 0x90 65 #endif 66 67 #define _ENTRY(x) \ 68 .text; _ALIGN_TEXT; .globl x; .type x,@function; x: 69 70 #ifdef _KERNEL 71 /* XXX Can't use __CONCAT() here, as it would be evaluated incorrectly. */ 72 #ifdef __STDC__ 73 #define IDTVEC(name) \ 74 .text; ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name: 75 #else 76 #define IDTVEC(name) \ 77 .text; ALIGN_TEXT; .globl X/**/name; .type X/**/name,@function; X/**/name: 78 #endif /* __STDC__ */ 79 #endif /* _KERNEL */ 80 81 #ifdef __STDC__ 82 #define CPUVAR(off) %gs:CPU_INFO_ ## off 83 #else 84 #define CPUVAR(off) %gs:CPU_INFO_/**/off 85 #endif 86 87 88 #ifdef GPROF 89 # define _PROF_PROLOGUE \ 90 pushq %rbp; leaq (%rsp),%rbp; call PIC_PLT(__mcount); popq %rbp 91 #else 92 # define _PROF_PROLOGUE 93 #endif 94 95 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 96 #define NENTRY(y) _ENTRY(_C_LABEL(y)) 97 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 98 #define END(y) .size y, . - y 99 100 #define ASMSTR .asciz 101 102 #define RCSID(x) .text; .asciz x 103 104 #define STRONG_ALIAS(alias,sym) \ 105 .global alias; \ 106 alias = sym 107 #define WEAK_ALIAS(alias,sym) \ 108 .weak alias; \ 109 alias = sym 110 111 /* XXXfvdl do not use stabs here */ 112 #ifdef __STDC__ 113 #define WARN_REFERENCES(sym,msg) \ 114 .stabs msg ## ,30,0,0,0 ; \ 115 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 116 #else 117 #define WARN_REFERENCES(sym,msg) \ 118 .stabs msg,30,0,0,0 ; \ 119 .stabs __STRING(sym),1,0,0,0 120 #endif /* __STDC__ */ 121 122 #endif /* !_MACHINE_ASM_H_ */ 123