minix/include/arch/i386/asm.h
Arun Thomas 9a21d1a2fd Macros for symbols used in both ASM and C
-The macros take care of prepending the leading underscore when
 necessary.
2010-08-17 16:44:07 +00:00

73 lines
2.5 KiB
C

/*-
* 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 __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
/* allow overriding entrypoint alignment */
#if !defined(_ALIGN_TEXT)
# define _ALIGN_TEXT .balign 16
#endif
#ifdef __ACK__
#define _ENTRY(x) \
.text; _ALIGN_TEXT; .globl x; x:
#else
#define _ENTRY(x) \
.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
#endif
#define _LABEL(x) \
.globl x; x:
#define ENTRY(y) _ENTRY(_C_LABEL(y))
#define NENTRY(y) _ENTRY(_C_LABEL(y))
#define ASENTRY(y) _ENTRY(_ASM_LABEL(y))
#define LABEL(y) _LABEL(_C_LABEL(y))
#define END(y) .size y, . - y
#define IMPORT(sym) \
.extern _C_LABEL(sym)
#endif /* !_I386_ASM_H_ */