1405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham/* $OpenBSD: regdef.h,v 1.3 2005/08/07 07:29:44 miod Exp $ */ 2405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 3405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham/* 4405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Copyright (c) 1992, 1993 5405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * The Regents of the University of California. All rights reserved. 6405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 7405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * This code is derived from software contributed to Berkeley by 8405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Ralph Campbell. This file is derived from the MIPS RISC 9405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Architecture book by Gerry Kane. 10405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 11405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Redistribution and use in source and binary forms, with or without 12405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * modification, are permitted provided that the following conditions 13405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * are met: 14405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 1. Redistributions of source code must retain the above copyright 15405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * notice, this list of conditions and the following disclaimer. 16405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 2. Redistributions in binary form must reproduce the above copyright 17405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * notice, this list of conditions and the following disclaimer in the 18405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * documentation and/or other materials provided with the distribution. 19405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 3. Neither the name of the University nor the names of its contributors 20405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * may be used to endorse or promote products derived from this software 21405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * without specific prior written permission. 22405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 23405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * SUCH DAMAGE. 34405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 35405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * @(#)regdef.h 8.1 (Berkeley) 6/10/93 36405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham */ 37405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#ifndef _MIPS_REGDEF_H_ 38405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define _MIPS_REGDEF_H_ 39405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 40405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define zero $0 /* always zero */ 41405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define AT $at /* assembler temp */ 42405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define v0 $2 /* return value */ 43405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define v1 $3 44405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a0 $4 /* argument registers */ 45405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a1 $5 46405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a2 $6 47405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a3 $7 48405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#if defined(__mips_n32) || defined(__mips_n64) 49405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a4 $8 /* expanded register arguments */ 50405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a5 $9 51405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a6 $10 52405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define a7 $11 53405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta0 $8 /* alias */ 54405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta1 $9 55405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta2 $10 56405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta3 $11 57405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t0 $12 /* temp registers (not saved across subroutine calls) */ 58405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t1 $13 59405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t2 $14 60405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t3 $15 61405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#else 62405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t0 $8 /* temp registers (not saved across subroutine calls) */ 63405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t1 $9 64405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t2 $10 65405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t3 $11 66405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t4 $12 67405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t5 $13 68405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t6 $14 69405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t7 $15 70405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta0 $12 /* alias */ 71405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta1 $13 72405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta2 $14 73405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ta3 $15 74405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#endif 75405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s0 $16 /* saved across subroutine calls (callee saved) */ 76405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s1 $17 77405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s2 $18 78405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s3 $19 79405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s4 $20 80405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s5 $21 81405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s6 $22 82405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s7 $23 83405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t8 $24 /* two more temp registers */ 84405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define t9 $25 85405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define k0 $26 /* kernel temporary */ 86405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define k1 $27 87405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define gp $28 /* global pointer */ 88405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define sp $29 /* stack pointer */ 89405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define s8 $30 /* one more callee saved */ 90405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#define ra $31 /* return address */ 91405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 92405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#endif /* !_MIPS_REGDEF_H_ */ 93