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sortix--sortix/libm/arch/i387/machine/asm.h
Jonas 'Sortie' Termansen 5980be9b3c Add Sortix Math Library.
This work is based in part on code from NetBSD libm, libc and kernel.

The library is partly public domain and partly BSD-style licensed.
2013-12-17 14:30:39 +01:00

124 lines
3.6 KiB
C

/* $NetBSD: asm.h,v 1.40 2011/06/16 13:16:20 joerg 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
*/
/* This is a cut down version of netbsd <machine/asm.h>. */
#ifndef INCLUDE_MACHINE_ASM_H
#define INCLUDE_MACHINE_ASM_H
#ifdef PIC
#define PIC_PROLOGUE \
pushl %ebx; \
call 1f; \
1: \
popl %ebx; \
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %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(x) x
#define _ASM_LABEL(x) x
#define CVAROFF(x, y) _C_LABEL(x) + y
#define __CONCAT(x,y) x ## y
#define __STRING(x) #x
/* let kernels and others override entrypoint alignment */
#if !defined(_ALIGN_TEXT) && !defined(_KERNEL)
# ifdef _STANDALONE
# define _ALIGN_TEXT .align 1
# elif defined __ELF__
# define _ALIGN_TEXT .align 16
# else
# define _ALIGN_TEXT .align 4
# endif
#endif
#define _ENTRY(x) \
.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
#define _LABEL(x) \
.globl x; 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 LABEL(y) _LABEL(_C_LABEL(y))
#define END(y) .size y, . - y
#define ASMSTR .asciz
#ifdef __ELF__
#define RCSID(x) .pushsection ".ident"; .asciz x; .popsection
#else
#define RCSID(x) .text; .asciz x
#endif
#define WEAK_ALIAS(alias,sym) \
.weak alias; \
alias = sym
/*
* STRONG_ALIAS: create a strong alias.
*/
#define STRONG_ALIAS(alias,sym) \
.globl alias; \
alias = sym
#define WARN_REFERENCES(sym,msg) \
.pushsection .gnu.warning. ## sym; \
.ascii msg; \
.popsection
#endif /* !INCLUDE_MACHINE_ASM_H */