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asm.h revision 1.6 
      1 /*	$NetBSD: asm.h,v 1.6 1994/12/15 15:26:26 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ralph Campbell.
      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  *	@(#)machAsmDefs.h	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 /*
     42  * machAsmDefs.h --
     43  *
     44  *	Macros used when writing assembler programs.
     45  *
     46  *	Copyright (C) 1989 Digital Equipment Corporation.
     47  *	Permission to use, copy, modify, and distribute this software and
     48  *	its documentation for any purpose and without fee is hereby granted,
     49  *	provided that the above copyright notice appears in all copies.
     50  *	Digital Equipment Corporation makes no representations about the
     51  *	suitability of this software for any purpose.  It is provided "as is"
     52  *	without express or implied warranty.
     53  *
     54  * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h,
     55  *	v 1.2 89/08/15 18:28:24 rab Exp  SPRITE (DECWRL)
     56  */
     57 
     58 #ifndef _MACHASMDEFS
     59 #define _MACHASMDEFS
     60 
     61 #include <machine/regdef.h>
     62 
     63 /*
     64  * Define -pg profile entry code.
     65  */
     66 #if defined(GPROF) || defined(PROF)
     67 #define	MCOUNT	.set noreorder; \
     68 		.set noat; \
     69 		move $1,$31; \
     70 		jal _mcount; \
     71 		subu sp,sp,8; \
     72 		.set reorder; \
     73 		.set at;
     74 #else
     75 #define	MCOUNT
     76 #endif
     77 
     78 #ifdef NO_UNDERSCORES
     79 # define _C_LABEL(x)	x
     80 #else
     81 # ifdef __STDC__
     82 #  define _C_LABEL(x)	_ ## x
     83 # else
     84 #  define _C_LABEL(x)	_/**/x
     85 # endif
     86 #endif
     87 
     88 /*
     89  * LEAF(x)
     90  *
     91  *	Declare a leaf routine.
     92  */
     93 #define LEAF(x) \
     94 	.globl _C_LABEL(x); \
     95 	.ent _C_LABEL(x), 0; \
     96 _C_LABEL(x): ; \
     97 	.frame sp, 0, ra; \
     98 	MCOUNT
     99 
    100 /*
    101  * NLEAF(x)
    102  *
    103  *	Declare a non-profiled leaf routine.
    104  */
    105 #define NLEAF(x) \
    106 	.globl _C_LABEL(x); \
    107 	.ent _C_LABEL(x), 0; \
    108 _C_LABEL(x): ; \
    109 	.frame sp, 0, ra
    110 
    111 /*
    112  * ALEAF -- declare alternate entry to a leaf routine.
    113  */
    114 #define	ALEAF(x)					\
    115 	.globl	_C_LABEL(x);				\
    116 	.aent	_C_LABEL(x),0;				\
    117 _C_LABEL(x):
    118 
    119 /*
    120  * NON_LEAF(x)
    121  *
    122  *	Declare a non-leaf routine (a routine that makes other C calls).
    123  */
    124 #define NON_LEAF(x, fsize, retpc) \
    125 	.globl _C_LABEL(x); \
    126 	.ent _C_LABEL(x), 0; \
    127 _C_LABEL(x): ; \
    128 	.frame sp, fsize, retpc; \
    129 	MCOUNT
    130 
    131 /*
    132  * NNON_LEAF(x)
    133  *
    134  *	Declare a non-profiled non-leaf routine
    135  *	(a routine that makes other C calls).
    136  */
    137 #define NNON_LEAF(x, fsize, retpc) \
    138 	.globl _C_LABEL(x); \
    139 	.ent _C_LABEL(x), 0; \
    140 _C_LABEL(x): ; \
    141 	.frame sp, fsize, retpc
    142 
    143 /*
    144  * END(x)
    145  *
    146  *	Mark end of a procedure.
    147  */
    148 #define END(x) \
    149 	.end _C_LABEL(x)
    150 
    151 #define STAND_FRAME_SIZE	24
    152 #define STAND_RA_OFFSET		20
    153 
    154 /*
    155  * Macros to panic and printf from assembly language.
    156  */
    157 #define PANIC(msg) \
    158 	la	a0, 9f; \
    159 	jal	_C_LABEL(panic); \
    160 	MSG(msg)
    161 
    162 #define	PRINTF(msg) \
    163 	la	a0, 9f; \
    164 	jal	_C_LABEL(printf); \
    165 	MSG(msg)
    166 
    167 #define	MSG(msg) \
    168 	.rdata; \
    169 9:	.asciiz	msg; \
    170 	.text
    171 
    172 #define ASMSTR(str) \
    173 	.asciiz str; \
    174 	.align	2
    175 
    176 #endif /* _MACHASMDEFS */
    177