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asm.h revision 1.8 
      1 /*	$NetBSD: asm.h,v 1.8 2001/12/16 18:11:12 thorpej 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 
     45 #define PIC_PROLOGUE
     46 #define PIC_EPILOGUE
     47 #define PIC_PLT(x)	x
     48 #define PIC_GOT(x)	x
     49 #define PIC_GOTOFF(x)	x
     50 
     51 /*
     52  * The old NetBSD/sh3 ELF toolchain used underscores.  The new
     53  * NetBSD/sh3 ELF toolchain does not.  The C pre-processor
     54  * defines __NO_LEADING_UNDERSCORES__ for the new ELF toolchain.
     55  */
     56 
     57 #if (defined(__ELF__) && defined(__NO_LEADING_UNDERSCORES__))
     58 # define _C_LABEL(x)	x
     59 #else
     60 #ifdef __STDC__
     61 # define _C_LABEL(x)	_ ## x
     62 #else
     63 # define _C_LABEL(x)	_/**/x
     64 #endif
     65 #endif
     66 #define	_ASM_LABEL(x)	x
     67 
     68 /* let kernels and others override entrypoint alignment */
     69 #ifndef _ALIGN_TEXT
     70 # define _ALIGN_TEXT .align 2
     71 #endif
     72 
     73 #ifdef __ELF__
     74 #define _ENTRY(x) \
     75 	.text ;\
     76 	_ALIGN_TEXT; \
     77 	.globl x; \
     78 	.type x,@function; \
     79 	x:
     80 #else
     81 #define _ENTRY(x) \
     82 	.text ;\
     83 	_ALIGN_TEXT; \
     84 	.globl x; \
     85 	x:
     86 #endif
     87 
     88 # define _PROF_PROLOGUE
     89 
     90 #define	ENTRY(y)	_ENTRY(_C_LABEL(y)); \
     91 	_PROF_PROLOGUE
     92 #define	NENTRY(y)	_ENTRY(_C_LABEL(y))
     93 #define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y));\
     94 	_PROF_PROLOGUE
     95 
     96 #ifdef __ELF__
     97 #define	ALTENTRY(name)	.globl _C_LABEL(name); \
     98 	.type _C_LABEL(name),@function; \
     99 	_C_LABEL(name):
    100 #else
    101 #define	ALTENTRY(name)	.globl _C_LABEL(name); \
    102 	_C_LABEL(name):
    103 #endif
    104 
    105 #define	ASMSTR		.asciz
    106 
    107 #define RCSID(x)	.text; .asciz x
    108 
    109 #ifdef __ELF__
    110 #define	WEAK_ALIAS(alias,sym)						\
    111 	.weak _C_LABEL(alias);						\
    112 	_C_LABEL(alias) = _C_LABEL(sym)
    113 #endif
    114 
    115 #ifdef __STDC__
    116 #define	__STRING(x)			#x
    117 #define	WARN_REFERENCES(sym, msg)
    118 #else
    119 #define	__STRING(x)			"x"
    120 #define	WARN_REFERENCES(sym, msg)
    121 #endif /* __STDC__ */
    122 
    123 #endif /* !_SH3_ASM_H_ */
    124