1 /* $NetBSD: mcontext.h,v 1.9 2008/01/04 23:04:54 dsl Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _AMD64_MCONTEXT_H_ 40 #define _AMD64_MCONTEXT_H_ 41 42 #include <machine/frame_regs.h> 43 44 /* 45 * General register state 46 */ 47 #define GREG_OFFSETS(reg, REG, idx) _REG_##REG = idx, 48 enum { _FRAME_GREG(GREG_OFFSETS) _NGREG = 26 }; 49 #undef GREG_OFFSETS 50 51 typedef unsigned long __greg_t; 52 typedef __greg_t __gregset_t[_NGREG]; 53 54 /* These names are for compatibility */ 55 #define _REG_URSP _REG_RSP 56 #define _REG_RFL _REG_RFLAGS 57 58 /* 59 * Floating point register state 60 */ 61 typedef char __fpregset_t[512]; 62 63 /* 64 * The padding below is to make __fpregs have a 16-byte aligned offset 65 * within ucontext_t. 66 */ 67 68 typedef struct { 69 __gregset_t __gregs; 70 long __pad; 71 __fpregset_t __fpregs; 72 } mcontext_t; 73 74 #define _UC_UCONTEXT_ALIGN (~0xf) 75 76 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_RSP] - 128) 77 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_RIP]) 78 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_RAX]) 79 80 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 81 82 /* 83 * mcontext extensions to handle signal delivery. 84 */ 85 #define _UC_SETSTACK 0x00010000 86 #define _UC_CLRSTACK 0x00020000 87 88 89 #ifdef _KERNEL 90 91 /* 92 * 32bit context definitions. 93 */ 94 95 #define _NGREG32 19 96 typedef unsigned int __greg32_t; 97 typedef __greg32_t __gregset32_t[_NGREG32]; 98 99 #define _REG32_GS 0 100 #define _REG32_FS 1 101 #define _REG32_ES 2 102 #define _REG32_DS 3 103 #define _REG32_EDI 4 104 #define _REG32_ESI 5 105 #define _REG32_EBP 6 106 #define _REG32_ESP 7 107 #define _REG32_EBX 8 108 #define _REG32_EDX 9 109 #define _REG32_ECX 10 110 #define _REG32_EAX 11 111 #define _REG32_TRAPNO 12 112 #define _REG32_ERR 13 113 #define _REG32_EIP 14 114 #define _REG32_CS 15 115 #define _REG32_EFL 16 116 #define _REG32_UESP 17 117 #define _REG32_SS 18 118 119 #define _UC_MACHINE32_SP(uc) ((uc)->uc_mcontext.__gregs[_REG32_UESP]) 120 121 /* 122 * Floating point register state 123 */ 124 typedef struct fxsave64 __fpregset32_t; 125 126 typedef struct { 127 __gregset32_t __gregs; 128 __fpregset32_t __fpregs; 129 } mcontext32_t; 130 131 #define _UC_MACHINE_PAD32 5 132 133 struct trapframe; 134 struct lwp; 135 int check_mcontext(struct lwp *, const mcontext_t *, struct trapframe *); 136 137 #endif /* _KERNEL */ 138 139 #endif /* !_AMD64_MCONTEXT_H_ */ 140