mirror of https://github.com/acidanthera/audk.git
209 lines
5.7 KiB
C
209 lines
5.7 KiB
C
/* $NetBSD: asm.h,v 1.30 2006/01/20 22:02:40 christos 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_
|
|
|
|
#ifdef _KERNEL_OPT
|
|
#include "opt_multiprocessor.h"
|
|
#endif
|
|
|
|
#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
|
|
|
|
#ifdef __ELF__
|
|
# define _C_LABEL(x) x
|
|
#else
|
|
# ifdef __STDC__
|
|
# define _C_LABEL(x) _ ## x
|
|
# else
|
|
# define _C_LABEL(x) _/**/x
|
|
# endif
|
|
#endif
|
|
#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
|
|
|
|
/* let kernels and others override entrypoint alignment */
|
|
#if !defined(_ALIGN_TEXT) && !defined(_KERNEL)
|
|
# ifdef __ELF__
|
|
# define _ALIGN_TEXT .align 4
|
|
# else
|
|
# define _ALIGN_TEXT .align 2
|
|
# endif
|
|
#endif
|
|
|
|
#define _ENTRY(x) \
|
|
.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#if defined(MULTIPROCESSOR)
|
|
#define CPUVAR(off) %fs:__CONCAT(CPU_INFO_,off)
|
|
#else
|
|
#define CPUVAR(off) _C_LABEL(cpu_info_primary)+__CONCAT(CPU_INFO_,off)
|
|
#endif /* MULTIPROCESSOR */
|
|
|
|
/* XXX Can't use __CONCAT() here, as it would be evaluated incorrectly. */
|
|
#ifdef __ELF__
|
|
#ifdef __STDC__
|
|
#define IDTVEC(name) \
|
|
ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name:
|
|
#else
|
|
#define IDTVEC(name) \
|
|
ALIGN_TEXT; .globl X/**/name; .type X/**/name,@function; X/**/name:
|
|
#endif /* __STDC__ */
|
|
#else
|
|
#ifdef __STDC__
|
|
#define IDTVEC(name) \
|
|
ALIGN_TEXT; .globl _X ## name; .type _X ## name,@function; _X ## name:
|
|
#else
|
|
#define IDTVEC(name) \
|
|
ALIGN_TEXT; .globl _X/**/name; .type _X/**/name,@function; _X/**/name:
|
|
#endif /* __STDC__ */
|
|
#endif /* __ELF__ */
|
|
|
|
#ifdef __ELF__
|
|
#define ALIGN_DATA .align 4
|
|
#define ALIGN_TEXT .align 4,0x90 /* 4-byte boundaries, NOP-filled */
|
|
#define SUPERALIGN_TEXT .align 16,0x90 /* 16-byte boundaries better for 486 */
|
|
#else
|
|
#define ALIGN_DATA .align 2
|
|
#define ALIGN_TEXT .align 2,0x90 /* 4-byte boundaries, NOP-filled */
|
|
#define SUPERALIGN_TEXT .align 4,0x90 /* 16-byte boundaries better for 486 */
|
|
#endif /* __ELF__ */
|
|
|
|
#define _ALIGN_TEXT ALIGN_TEXT
|
|
|
|
#ifdef GPROF
|
|
#ifdef __ELF__
|
|
#define MCOUNT_ASM call _C_LABEL(__mcount)
|
|
#else /* __ELF__ */
|
|
#define MCOUNT_ASM call _C_LABEL(mcount)
|
|
#endif /* __ELF__ */
|
|
#else /* GPROF */
|
|
#define MCOUNT_ASM /* nothing */
|
|
#endif /* GPROF */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
|
|
|
|
#ifdef GPROF
|
|
# ifdef __ELF__
|
|
# define _PROF_PROLOGUE \
|
|
pushl %ebp; movl %esp,%ebp; call PIC_PLT(__mcount); popl %ebp
|
|
# else
|
|
# define _PROF_PROLOGUE \
|
|
pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp
|
|
# endif
|
|
#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 ASMSTR .asciz
|
|
|
|
#ifdef __ELF__
|
|
#define RCSID(x) .section ".ident"; .asciz x
|
|
#else
|
|
#define RCSID(x) .text; .asciz x
|
|
#endif
|
|
|
|
#ifdef NO_KERNEL_RCSIDS
|
|
#define __KERNEL_RCSID(_n, _s) /* nothing */
|
|
#else
|
|
#define __KERNEL_RCSID(_n, _s) RCSID(_s)
|
|
#endif
|
|
|
|
#ifdef __ELF__
|
|
#define WEAK_ALIAS(alias,sym) \
|
|
.weak alias; \
|
|
alias = sym
|
|
#endif
|
|
/*
|
|
* STRONG_ALIAS: create a strong alias.
|
|
*/
|
|
#define STRONG_ALIAS(alias,sym) \
|
|
.globl alias; \
|
|
alias = sym
|
|
|
|
#ifdef __STDC__
|
|
#define WARN_REFERENCES(sym,msg) \
|
|
.stabs msg ## ,30,0,0,0 ; \
|
|
.stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
|
|
#elif defined(__ELF__)
|
|
#define WARN_REFERENCES(sym,msg) \
|
|
.stabs msg,30,0,0,0 ; \
|
|
.stabs __STRING(sym),1,0,0,0
|
|
#else
|
|
#define WARN_REFERENCES(sym,msg) \
|
|
.stabs msg,30,0,0,0 ; \
|
|
.stabs __STRING(_/**/sym),1,0,0,0
|
|
#endif /* __STDC__ */
|
|
|
|
|
|
|
|
#endif /* !_I386_ASM_H_ */
|