125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/* $OpenBSD: asm.h,v 1.8 2004/06/13 21:49:16 niklas Exp $ */
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/* $NetBSD: asm.h,v 1.7 1994/10/27 04:15:56 cgd Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)asm.h 5.5 (Berkeley) 5/7/91
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*/
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#ifndef _I386_ASM_H_
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#define _I386_ASM_H_
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/* This is borrowed from FreeBSD /src/sys/i386/include/asmacros.h v1.27 */
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/*
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* CNAME and HIDENAME manage the relationship between symbol names in C
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* and the equivalent assembly language names. CNAME is given a name as
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* it would be used in a C program. It expands to the equivalent assembly
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* language name. HIDENAME is given an assembly-language name, and expands
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* to a possibly-modified form that will be invisible to C programs.
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*/
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#define CNAME(csym) csym
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#define HIDENAME(asmsym) .asmsym
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#ifdef PIC
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#define PIC_PROLOGUE \
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pushl %ebx; \
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call 666f; \
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666: \
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popl %ebx; \
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addl $_C_LABEL(_GLOBAL_OFFSET_TABLE_)+[.-666b], %ebx
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#define PIC_EPILOGUE \
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popl %ebx
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#define PIC_PLT(x) x@PLT
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#define PIC_GOT(x) x@GOT(%ebx)
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#define PIC_GOTOFF(x) x@GOTOFF(%ebx)
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#else
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#define PIC_PROLOGUE
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#define PIC_EPILOGUE
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#define PIC_PLT(x) x
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#define PIC_GOT(x) x
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#define PIC_GOTOFF(x) x
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#endif
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#define _C_LABEL(name) name
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#define _ASM_LABEL(x) x
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#define CVAROFF(x, y) _C_LABEL(x) + y
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#ifdef __STDC__
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# define __CONCAT(x,y) x ## y
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# define __STRING(x) #x
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#else
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# define __CONCAT(x,y) x/**/y
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# define __STRING(x) "x"
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#endif
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/*
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* WEAK ALIAS: create a weak alias
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*/
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#define WEAK_ALIAS(alias,sym) \
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.weak alias; \
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alias = sym
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/*
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* WARN_REFERENCES: create a warning if the specified symbol is referenced
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*/
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#define WARN_REFERENCES(_sym,_msg) \
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.section .gnu.warning. ## _sym ; .ascii _msg ; .text
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/* let kernels and others override entrypoint alignment */
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#ifndef _ALIGN_TEXT
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# define _ALIGN_TEXT .align 2, 0x90
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#endif
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#define _ENTRY(x) \
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.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
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#ifdef GPROF
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# define _PROF_PROLOGUE \
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pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp
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#else
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# define _PROF_PROLOGUE
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#endif
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#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
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#define NENTRY(y) _ENTRY(_C_LABEL(y))
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#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
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#define ALTENTRY(name) .globl _C_LABEL(name); _C_LABEL(name):
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#define ASMSTR .asciz
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#define RCSID(x) .text; .asciz x
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#define __FBSDID(x) RCSID(x)
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#endif /* !_I386_ASM_H_ */
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