1 /* $OpenBSD: reg.h,v 1.7 2014/09/08 01:47:05 guenther Exp $ */ 2 /* $NetBSD: reg.h,v 1.2 1995/03/28 18:14:07 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Chris G. Demetriou 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31 #ifndef _MACHINE_REG_H_ 32 #define _MACHINE_REG_H_ 33 34 /* 35 * XXX where did this info come from? 36 */ 37 38 /* 39 * Struct reg, used for ptrace and in signal contexts 40 * Note that in signal contexts, it's represented as an array. 41 * That array has to look exactly like 'struct reg' though. 42 */ 43 #define R_V0 0 44 #define R_T0 1 45 #define R_T1 2 46 #define R_T2 3 47 #define R_T3 4 48 #define R_T4 5 49 #define R_T5 6 50 #define R_T6 7 51 #define R_T7 8 52 #define R_S0 9 53 #define R_S1 10 54 #define R_S2 11 55 #define R_S3 12 56 #define R_S4 13 57 #define R_S5 14 58 #define R_S6 15 59 #define R_A0 16 60 #define R_A1 17 61 #define R_A2 18 62 #define R_A3 19 63 #define R_A4 20 64 #define R_A5 21 65 #define R_T8 22 66 #define R_T9 23 67 #define R_T10 24 68 #define R_T11 25 69 #define R_RA 26 70 #define R_T12 27 71 #define R_AT 28 72 #define R_GP 29 73 #define R_SP 30 74 #define R_ZERO 31 75 76 struct reg { 77 u_long r_regs[32]; 78 }; 79 80 /* 81 * Floating point unit state. (also, register set used for ptrace.) 82 * 83 * The floating point registers for a process, saved only when 84 * necessary. 85 * 86 * Note that in signal contexts, it's represented as an array. 87 * That array has to look exactly like 'struct reg' though. 88 */ 89 struct fpreg { 90 u_long fpr_regs[32]; 91 u_long fpr_cr; 92 }; 93 94 #ifdef _KERNEL 95 void restorefpstate(struct fpreg *); 96 void savefpstate(struct fpreg *); 97 void frametoreg(struct trapframe *, struct reg *); 98 void regtoframe(struct reg *, struct trapframe *); 99 #endif 100 101 #endif /* _MACHINE_REG_H_ */ 102