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asm.h revision 1.4 
      1 /*-
      2  * Copyright (c) 1990 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * William Jolitz.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	from: @(#)asm.h	5.5 (Berkeley) 5/7/91
     37  *	$Id: asm.h,v 1.4 1994/01/07 00:46:20 pk Exp $
     38  */
     39 
     40 #ifndef _I386_ASM_H_
     41 #define _I386_ASM_H_
     42 
     43 #ifdef PIC
     44 #define PIC_PROLOGUE	\
     45 	pushl	%ebx;	\
     46 	call	1f;	\
     47 1:			\
     48 	popl	%ebx;	\
     49 	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
     50 #define PIC_EPILOGUE	\
     51 	popl	%ebx
     52 #define PIC_PLT(x)	x@PLT
     53 #define PIC_GOT(x)	x@GOT(%ebx)
     54 #define PIC_GOTOFF(x)	x@GOTOFF(%ebx)
     55 #else
     56 #define PIC_PROLOGUE
     57 #define PIC_EPILOGUE
     58 #define PIC_PLT(x)	x
     59 #define PIC_GOT(x)	x
     60 #define PIC_GOTOFF(x)	x
     61 #endif
     62 
     63 #ifdef PROF
     64 /*
     65  * XXX assumes that arguments are not passed in %eax
     66  */
     67 # define _BEGIN_ENTRY	.data; 1:; .long 0; .text; .align 2
     68 # define _END_ENTRY	movl $1b,%eax; call PIC_PLT(mcount)
     69 #else
     70 # define _BEGIN_ENTRY	.text; .align 2
     71 # define _END_ENTRY
     72 #endif
     73 
     74 #ifdef __STDC__
     75 # define _C_FUNC(x)	_ ## x
     76 #else
     77 # define _C_FUNC(x)	_/**/x
     78 #endif
     79 #define	_ASM_FUNC(x)	x
     80 
     81 #define _ENTRY(x)	.globl x; .type x,@function; x:
     82 
     83 #define	ENTRY(y)	_BEGIN_ENTRY; _ENTRY(_C_FUNC(y)); _END_ENTRY
     84 #define	TWOENTRY(y,z)	_BEGIN_ENTRY; _ENTRY(_C_FUNC(y)); _ENTRY(_C_FUNC(z)); \
     85 			_END_ENTRY
     86 #define	ASENTRY(y)	_BEGIN_ENTRY; _ENTRY(_ASM_FUNC(y)); _END_ENTRY
     87 
     88 #define	ASMSTR		.asciz
     89 
     90 #endif /* !_I386_ASM_H_ */
     91