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asm.h revision 1.1 
      1 /*
      2  * Copyright (c) 1992 Regents of the University of California.
      3  * 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	7.4 (Berkeley) 2/26/93
     37  */
     38 
     39 /*
     40  * machAsmDefs.h --
     41  *
     42  *	Macros used when writing assembler programs.
     43  *
     44  *	Copyright (C) 1989 Digital Equipment Corporation.
     45  *	Permission to use, copy, modify, and distribute this software and
     46  *	its documentation for any purpose and without fee is hereby granted,
     47  *	provided that the above copyright notice appears in all copies.
     48  *	Digital Equipment Corporation makes no representations about the
     49  *	suitability of this software for any purpose.  It is provided "as is"
     50  *	without express or implied warranty.
     51  *
     52  * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h,
     53  *	v 1.2 89/08/15 18:28:24 rab Exp SPRITE (DECWRL)
     54  * $Id: asm.h,v 1.1 1993/10/12 03:22:42 deraadt Exp $
     55  */
     56 
     57 #ifndef _MACHASMDEFS
     58 #define _MACHASMDEFS
     59 
     60 #include <machine/regdef.h>
     61 
     62 /*
     63  * Define -pg profile entry code.
     64  */
     65 #ifdef PROF
     66 #define	MCOUNT	.set noreorder; \
     67 		.set noat; \
     68 		move $1,$31; \
     69 		jal _mcount; \
     70 		subu sp,sp,8; \
     71 		.set reorder; \
     72 		.set at;
     73 #else
     74 #define	MCOUNT
     75 #endif PROF
     76 
     77 /*
     78  * LEAF(x)
     79  *
     80  *	Declare a leaf routine.
     81  */
     82 #define LEAF(x) \
     83 	.globl x; \
     84 	.ent x, 0; \
     85 x: ; \
     86 	.frame sp, 0, ra; \
     87 	MCOUNT
     88 
     89 /*
     90  * NLEAF(x)
     91  *
     92  *	Declare a non-profiled leaf routine.
     93  */
     94 #define NLEAF(x) \
     95 	.globl x; \
     96 	.ent x, 0; \
     97 x: ; \
     98 	.frame sp, 0, ra
     99 
    100 /*
    101  * ALEAF -- declare alternate entry to a leaf routine.
    102  */
    103 #define	ALEAF(x)					\
    104 	.globl	x;					\
    105 	.aent	x,0;					\
    106 x:
    107 
    108 /*
    109  * NON_LEAF(x)
    110  *
    111  *	Declare a non-leaf routine (a routine that makes other C calls).
    112  */
    113 #define NON_LEAF(x, fsize, retpc) \
    114 	.globl x; \
    115 	.ent x, 0; \
    116 x: ; \
    117 	.frame sp, fsize, retpc; \
    118 	MCOUNT
    119 
    120 /*
    121  * END(x)
    122  *
    123  *	Mark end of a procedure.
    124  */
    125 #define END(x) \
    126 	.end x
    127 
    128 #define STAND_FRAME_SIZE	24
    129 #define STAND_RA_OFFSET		20
    130 
    131 /*
    132  * Macros to panic and printf from assembly language.
    133  */
    134 #define PANIC(msg) \
    135 	la	a0, 9f; \
    136 	jal	panic; \
    137 	MSG(msg)
    138 
    139 #define	PRINTF(msg) \
    140 	la	a0, 9f; \
    141 	jal	printf; \
    142 	MSG(msg)
    143 
    144 #define	MSG(msg) \
    145 	.rdata; \
    146 9:	.asciiz	msg; \
    147 	.text
    148 
    149 #define ASMSTR(str) \
    150 	.asciiz str; \
    151 	.align	2
    152 
    153 #endif /* _MACHASMDEFS */
    154