1 /* $NetBSD: reg.h,v 1.1 2014/09/03 19:34:26 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _OR1K_REG_H_ 33 #define _OR1K_REG_H_ 34 35 // r0 = must contain 0 36 // r1 = SP (stack pointer) 37 // r2 = FP (frame pointer) 38 // r3-r8 = arg param 0-5 39 // r9 = LR (link register) 40 // r10 = TP (thread pointer) 41 // r11 = RV 42 // r12 = RVH (64-bit returns) 43 // r13, r15, r17, r19, r21, r23, r25, r27, r29, r31 - temporary 44 // r14, r16, r18, r20, r22, r24, r26, r28, r30 - callee saved 45 // r16 = GOT address (PIC) 46 47 struct reg { 48 #ifdef _LP64 49 uint32_t r_reg[31]; /* r0 is always 0 */ 50 #else 51 uint64_t r_reg[31]; /* r0 is always 0 */ 52 #endif 53 }; 54 55 struct fpreg { 56 uint32_t f_fpcsr; 57 }; 58 59 #endif /* _OR1K_REG_H_ */ 60