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asm.h revision 1.10 
      1 /*	$NetBSD: asm.h,v 1.10 2002/04/28 17:10:33 uch Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)asm.h	5.5 (Berkeley) 5/7/91
     39  */
     40 
     41 #ifndef _SH3_ASM_H_
     42 #define	_SH3_ASM_H_
     43 
     44 #define	PIC_PROLOGUE
     45 #define	PIC_EPILOGUE
     46 #define	PIC_PLT(x)	x
     47 #define	PIC_GOT(x)	x
     48 #define	PIC_GOTOFF(x)	x
     49 
     50 /*
     51  * The old NetBSD/sh3 ELF toolchain used underscores.  The new
     52  * NetBSD/sh3 ELF toolchain does not.  The C pre-processor
     53  * defines __NO_LEADING_UNDERSCORES__ for the new ELF toolchain.
     54  */
     55 
     56 #if (defined(__ELF__) && defined(__NO_LEADING_UNDERSCORES__))
     57 # define _C_LABEL(x)	x
     58 #else
     59 #ifdef __STDC__
     60 # define _C_LABEL(x)	_ ## x
     61 #else
     62 # define _C_LABEL(x)	_/**/x
     63 #endif
     64 #endif
     65 #define	_ASM_LABEL(x)	x
     66 
     67 /* let kernels and others override entrypoint alignment */
     68 #ifndef _ALIGN_TEXT
     69 # define _ALIGN_TEXT .align 2
     70 #endif
     71 
     72 #ifdef __ELF__
     73 #define	_ENTRY(x)							\
     74 	.text								;\
     75 	_ALIGN_TEXT							;\
     76 	.globl x							;\
     77 	.type x,@function						;\
     78 	x:
     79 #else /* __ELF__ */
     80 #define	_ENTRY(x)							\
     81 	.text								;\
     82 	_ALIGN_TEXT							;\
     83 	.globl x							;\
     84 	x:
     85 #endif /* __ELF__ */
     86 
     87 #define	_PROF_PROLOGUE
     88 
     89 #define	ENTRY(y)	_ENTRY(_C_LABEL(y))				;\
     90 	_PROF_PROLOGUE
     91 #define	NENTRY(y)	_ENTRY(_C_LABEL(y))
     92 #define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y))				;\
     93 	_PROF_PROLOGUE
     94 
     95 #ifdef __ELF__
     96 #define	ALTENTRY(name)	.globl _C_LABEL(name)				;\
     97 	.type _C_LABEL(name),@function					;\
     98 	_C_LABEL(name):
     99 #else
    100 #define	ALTENTRY(name)	.globl _C_LABEL(name)				;\
    101 	_C_LABEL(name):
    102 #endif
    103 
    104 #define	ASMSTR		.asciz
    105 
    106 #define	RCSID(x)	.text; .asciz x
    107 
    108 #ifdef __ELF__
    109 #define	WEAK_ALIAS(alias,sym)						\
    110 	.weak _C_LABEL(alias);						\
    111 	_C_LABEL(alias) = _C_LABEL(sym)
    112 #endif
    113 
    114 #ifdef __STDC__
    115 #define	__STRING(x)			#x
    116 #define	WARN_REFERENCES(sym, msg)
    117 #else
    118 #define	__STRING(x)			"x"
    119 #define	WARN_REFERENCES(sym, msg)
    120 #endif /* __STDC__ */
    121 
    122 #endif /* !_SH3_ASM_H_ */
    123