1 /* $NetBSD: mcontext.h,v 1.15 2024/11/30 01:04:15 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 _VAX_MCONTEXT_H_ 33 #define _VAX_MCONTEXT_H_ 34 35 /* 36 * Layout of mcontext_t. 37 * As on Alpha, this maps directly to `struct reg'. 38 */ 39 40 #define _NGREG 17 /* R0-31, AP, SP, FP, PC, PSL */ 41 42 typedef int __greg_t; 43 typedef __greg_t __gregset_t[_NGREG]; 44 45 #define _REG_R0 0 46 #define _REG_R1 1 47 #define _REG_R2 2 48 #define _REG_R3 3 49 #define _REG_R4 4 50 #define _REG_R5 5 51 #define _REG_R6 6 52 #define _REG_R7 7 53 #define _REG_R8 8 54 #define _REG_R9 9 55 #define _REG_R10 10 56 #define _REG_R11 11 57 #define _REG_AP 12 58 #define _REG_FP 13 59 #define _REG_SP 14 60 #define _REG_PC 15 61 #define _REG_PSL 16 62 63 typedef struct { 64 __gregset_t __gregs; /* General Purpose Register set */ 65 } mcontext_t; 66 67 /* Machine-dependent uc_flags */ 68 #define _UC_SETSTACK _UC_MD_BIT16 69 #define _UC_CLRSTACK _UC_MD_BIT17 70 #define _UC_TLSBASE _UC_MD_BIT19 71 72 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP]) 73 #define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_FP]) 74 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 75 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0]) 76 77 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 78 79 #endif /* !_VAX_MCONTEXT_H_ */ 80