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asm.h revision 1.2 
      1 /*
      2  * Copyright (c) 1992, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * Ralph Campbell.
      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: @(#)machAsmDefs.h	8.1 (Berkeley) 6/10/93
     37  *      $Id: asm.h,v 1.2 1994/05/27 08:40:41 glass Exp $
     38  */
     39 
     40 /*
     41  * machAsmDefs.h --
     42  *
     43  *	Macros used when writing assembler programs.
     44  *
     45  *	Copyright (C) 1989 Digital Equipment Corporation.
     46  *	Permission to use, copy, modify, and distribute this software and
     47  *	its documentation for any purpose and without fee is hereby granted,
     48  *	provided that the above copyright notice appears in all copies.
     49  *	Digital Equipment Corporation makes no representations about the
     50  *	suitability of this software for any purpose.  It is provided "as is"
     51  *	without express or implied warranty.
     52  *
     53  * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h,
     54  *	v 1.2 89/08/15 18:28:24 rab Exp  SPRITE (DECWRL)
     55  * $Id: asm.h,v 1.2 1994/05/27 08:40:41 glass Exp $
     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 /*
     79  * LEAF(x)
     80  *
     81  *	Declare a leaf routine.
     82  */
     83 #define LEAF(x) \
     84 	.globl x; \
     85 	.ent x, 0; \
     86 x: ; \
     87 	.frame sp, 0, ra; \
     88 	MCOUNT
     89 
     90 /*
     91  * NLEAF(x)
     92  *
     93  *	Declare a non-profiled leaf routine.
     94  */
     95 #define NLEAF(x) \
     96 	.globl x; \
     97 	.ent x, 0; \
     98 x: ; \
     99 	.frame sp, 0, ra
    100 
    101 /*
    102  * ALEAF -- declare alternate entry to a leaf routine.
    103  */
    104 #define	ALEAF(x)					\
    105 	.globl	x;					\
    106 	.aent	x,0;					\
    107 x:
    108 
    109 /*
    110  * NON_LEAF(x)
    111  *
    112  *	Declare a non-leaf routine (a routine that makes other C calls).
    113  */
    114 #define NON_LEAF(x, fsize, retpc) \
    115 	.globl x; \
    116 	.ent x, 0; \
    117 x: ; \
    118 	.frame sp, fsize, retpc; \
    119 	MCOUNT
    120 
    121 /*
    122  * NNON_LEAF(x)
    123  *
    124  *	Declare a non-profiled non-leaf routine
    125  *	(a routine that makes other C calls).
    126  */
    127 #define NNON_LEAF(x, fsize, retpc) \
    128 	.globl x; \
    129 	.ent x, 0; \
    130 x: ; \
    131 	.frame sp, fsize, retpc
    132 
    133 /*
    134  * END(x)
    135  *
    136  *	Mark end of a procedure.
    137  */
    138 #define END(x) \
    139 	.end x
    140 
    141 #define STAND_FRAME_SIZE	24
    142 #define STAND_RA_OFFSET		20
    143 
    144 /*
    145  * Macros to panic and printf from assembly language.
    146  */
    147 #define PANIC(msg) \
    148 	la	a0, 9f; \
    149 	jal	panic; \
    150 	MSG(msg)
    151 
    152 #define	PRINTF(msg) \
    153 	la	a0, 9f; \
    154 	jal	printf; \
    155 	MSG(msg)
    156 
    157 #define	MSG(msg) \
    158 	.rdata; \
    159 9:	.asciiz	msg; \
    160 	.text
    161 
    162 #define ASMSTR(str) \
    163 	.asciiz str; \
    164 	.align	2
    165 
    166 #endif /* _MACHASMDEFS */
    167