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 $ */
|
||
|
|
/* $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 _I386_ASM_H_
|
||
|
|
#define _I386_ASM_H_
|
||
|
|
|
||
|
|
/* This is borrowed from FreeBSD /src/sys/i386/include/asmacros.h v1.27 */
|
||
|
|
/*
|
||
|
|
* CNAME and HIDENAME manage the relationship between symbol names in C
|
||
|
|
* and the equivalent assembly language names. CNAME is given a name as
|
||
|
|
* it would be used in a C program. It expands to the equivalent assembly
|
||
|
|
* language name. HIDENAME is given an assembly-language name, and expands
|
||
|
|
* to a possibly-modified form that will be invisible to C programs.
|
||
|
|
*/
|
||
|
|
#define CNAME(csym) csym
|
||
|
|
#define HIDENAME(asmsym) .asmsym
|
||
|
|
|
||
|
|
#ifdef PIC
|
||
|
|
#define PIC_PROLOGUE \
|
||
|
|
pushl %ebx; \
|
||
|
|
call 666f; \
|
||
|
|
666: \
|
||
|
|
popl %ebx; \
|
||
|
|
addl $_C_LABEL(_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) _C_LABEL(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
|
||
|
|
|
||
|
|
/*
|
||
|
|
* WEAK ALIAS: create a weak alias
|
||
|
|
*/
|
||
|
|
#define WEAK_ALIAS(alias,sym) \
|
||
|
|
.weak alias; \
|
||
|
|
alias = sym
|
||
|
|
|
||
|
|
/*
|
||
|
|
* WARN_REFERENCES: create a warning if the specified symbol is referenced
|
||
|
|
*/
|
||
|
|
#define WARN_REFERENCES(_sym,_msg) \
|
||
|
|
.section .gnu.warning. ## _sym ; .ascii _msg ; .text
|
||
|
|
|
||
|
|
/* let kernels and others override entrypoint alignment */
|
||
|
|
#ifndef _ALIGN_TEXT
|
||
|
|
# define _ALIGN_TEXT .align 2, 0x90
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define _ENTRY(x) \
|
||
|
|
.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
|
||
|
|
|
||
|
|
#ifdef GPROF
|
||
|
|
# define _PROF_PROLOGUE \
|
||
|
|
pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp
|
||
|
|
#else
|
||
|
|
# define _PROF_PROLOGUE
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
|
||
|
|
#define NENTRY(y) _ENTRY(_C_LABEL(y))
|
||
|
|
#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
|
||
|
|
|
||
|
|
#define ALTENTRY(name) .globl _C_LABEL(name); _C_LABEL(name):
|
||
|
|
|
||
|
|
#define ASMSTR .asciz
|
||
|
|
|
||
|
|
#define RCSID(x) .text; .asciz x
|
||
|
|
#define __FBSDID(x) RCSID(x)
|
||
|
|
|
||
|
|
#endif /* !_I386_ASM_H_ */
|