/* $OpenBSD: asm.h,v 1.19 2022/12/08 01:25:45 guenther Exp $ */ /* $NetBSD: asm.h,v 1.7 1994/10/27 04:15:56 cgd Exp $ */ /*- * 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. * * @(#)asm.h 5.5 (Berkeley) 5/7/91 */ #ifndef _MACHINE_ASM_H_ #define _MACHINE_ASM_H_ #ifdef __PIC__ #define PIC_PROLOGUE \ pushl %ebx; \ call 666f; \ 666: \ popl %ebx; \ addl $_GLOBAL_OFFSET_TABLE_+[.-666b], %ebx #define PIC_EPILOGUE \ popl %ebx #define PIC_PLT(x) x@PLT #define PIC_GOT(x) x@GOT(%ebx) #define PIC_GOTOFF(x) x@GOTOFF(%ebx) #else #define PIC_PROLOGUE #define PIC_EPILOGUE #define PIC_PLT(x) x #define PIC_GOT(x) x #define PIC_GOTOFF(x) x #endif #define _C_LABEL(name) name #define _ASM_LABEL(x) x #define CVAROFF(x, y) x + y #ifdef __STDC__ # define __CONCAT(x,y) x ## y # define __STRING(x) #x #else # define __CONCAT(x,y) x/**/y # define __STRING(x) "x" #endif /* * STRONG_ALIAS, WEAK_ALIAS * Create a strong or weak alias. */ #define STRONG_ALIAS(alias,sym) \ .global alias; \ alias = sym #define WEAK_ALIAS(alias,sym) \ .weak alias; \ alias = sym /* let kernels and others override entrypoint alignment */ #ifndef _ALIGN_TEXT # define _ALIGN_TEXT .align 2, 0x90 #endif /* NB == No Binding: use .globl or .weak as necessary */ #define _ENTRY_NB(x) \ .text; _ALIGN_TEXT; .type x,@function; x: #define _ENTRY(x) .globl x; _ENTRY_NB(x) #ifdef _KERNEL #define KUTEXT .section .kutext, "ax" #define IDTVEC(name) \ KUTEXT; ALIGN_TEXT; \ .globl X##name; X##name: #define KIDTVEC(name) \ .text; ALIGN_TEXT; \ .globl X##name; X##name: #define KUENTRY(x) \ KUTEXT; _ALIGN_TEXT; .globl x; .type x,@function; x: #endif /* _KERNEL */ #if defined(PROF) || defined(GPROF) # define _PROF_PROLOGUE \ pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp #else # define _PROF_PROLOGUE #endif #define ENTRY(y) _ENTRY(y); _PROF_PROLOGUE #define ENTRY_NB(y) _ENTRY_NB(y); _PROF_PROLOGUE #define NENTRY(y) _ENTRY(y) #define ASENTRY(y) _ENTRY(y); _PROF_PROLOGUE #define NASENTRY(y) _ENTRY(y) #define END(y) .size y, . - y #define ALTENTRY(name) .globl name; name: #ifdef _KERNEL #define CPUVAR(var) %fs:__CONCAT(CPU_INFO_,var) #endif /* _KERNEL */ #endif /* !_MACHINE_ASM_H_ */