1 /* $NetBSD: mcontext.h,v 1.15 2024/11/30 01:04:06 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Klaus Klein. 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 _ALPHA_MCONTEXT_H_ 33 #define _ALPHA_MCONTEXT_H_ 34 35 /* 36 * General register state (important: 0-31 maps to `struct reg') 37 */ 38 #define _NGREG 34 /* 0-31, PC, PS */ 39 typedef unsigned long __greg_t; 40 typedef __greg_t __gregset_t[_NGREG]; 41 42 /* Convenience synonyms */ 43 #define _REG_V0 0 44 #define _REG_T0 1 45 #define _REG_T1 2 46 #define _REG_T2 3 47 #define _REG_T3 4 48 #define _REG_T4 5 49 #define _REG_T5 6 50 #define _REG_T6 7 51 #define _REG_T7 8 52 #define _REG_S0 9 53 #define _REG_S1 10 54 #define _REG_S2 11 55 #define _REG_S3 12 56 #define _REG_S4 13 57 #define _REG_S5 14 58 #define _REG_S6 15 59 #define _REG_A0 16 60 #define _REG_A1 17 61 #define _REG_A2 18 62 #define _REG_A3 19 63 #define _REG_A4 20 64 #define _REG_A5 21 65 #define _REG_T8 22 66 #define _REG_T9 23 67 #define _REG_T10 24 68 #define _REG_T11 25 69 #define _REG_RA 26 70 #define _REG_T12 27 71 #define _REG_PV 27 72 #define _REG_AT 28 73 #define _REG_GP 29 74 #define _REG_SP 30 75 #define _REG_UNIQUE 31 76 #define _REG_PC 32 77 #define _REG_PS 33 78 79 /* 80 * Floating point register state (important: maps to `struct fpreg') 81 */ 82 typedef struct { 83 union { 84 unsigned long __fp_regs[32]; 85 double __fp_dregs[32]; 86 } __fp_fr; 87 unsigned long __fp_fpcr; 88 } __fpregset_t; 89 90 typedef struct { 91 __gregset_t __gregs; 92 __fpregset_t __fpregs; 93 } mcontext_t; 94 95 /* Machine-dependent uc_flags */ 96 #define _UC_TLSBASE _UC_MD_BIT5 /* valid value in _REG_UNIQUE */ 97 #define _UC_SETSTACK _UC_MD_BIT16 98 #define _UC_CLRSTACK _UC_MD_BIT17 99 100 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP]) 101 #define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_S6]) 102 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 103 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_V0]) 104 105 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 106 107 #endif /* !_ALPHA_MCONTEXT_H_ */ 108