1 /* $NetBSD: mcontext.h,v 1.16 2024/11/30 01:04:11 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 _M68K_MCONTEXT_H_ 33 #define _M68K_MCONTEXT_H_ 34 35 #ifdef _KERNEL 36 #include <m68k/cpuframe.h> 37 #endif 38 39 /* 40 * mcontext extensions to handle signal delivery. 41 */ 42 #define _UC_SETSTACK _UC_MD_BIT16 43 #define _UC_CLRSTACK _UC_MD_BIT17 44 45 /* 46 * General register state 47 */ 48 #define _NGREG 18 49 typedef int __greg_t; 50 typedef __greg_t __gregset_t[_NGREG]; 51 52 #define _REG_D0 0 53 #define _REG_D1 1 54 #define _REG_D2 2 55 #define _REG_D3 3 56 #define _REG_D4 4 57 #define _REG_D5 5 58 #define _REG_D6 6 59 #define _REG_D7 7 60 #define _REG_A0 8 61 #define _REG_A1 9 62 #define _REG_A2 10 63 #define _REG_A3 11 64 #define _REG_A4 12 65 #define _REG_A5 13 66 #define _REG_A6 14 67 #define _REG_A7 15 68 #define _REG_PC 16 69 #define _REG_PS 17 70 71 typedef struct { 72 int __fp_pcr; 73 int __fp_psr; 74 int __fp_piaddr; 75 int __fp_fpregs[8*3]; 76 } __fpregset_t; 77 78 typedef struct { 79 __gregset_t __gregs; /* General Register set */ 80 __fpregset_t __fpregs; /* Floating Point Register set */ 81 union { 82 long __mc_state[201]; /* Only need 308 bytes... */ 83 #if defined(_KERNEL) || defined(__M68K_MCONTEXT_PRIVATE) 84 struct { 85 /* Rest of the frame. */ 86 unsigned int __mcf_format; 87 unsigned int __mcf_vector; 88 union F_u __mcf_exframe; 89 /* Rest of the FPU frame. */ 90 union FPF_u1 __mcf_fpf_u1; 91 union FPF_u2 __mcf_fpf_u2; 92 } __mc_frame; 93 #endif /* _KERNEL || __M68K_MCONTEXT_PRIVATE */ 94 } __mc_pad; 95 __greg_t _mc_tlsbase; 96 } mcontext_t; 97 98 /* Note: no additional padding is to be performed in ucontext_t. */ 99 100 /* Machine-specific uc_flags value */ 101 #define _UC_M68K_UC_USER _UC_MD_BIT30 102 #define _UC_TLSBASE _UC_MD_BIT19 103 104 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_A7]) 105 #define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_A6]) 106 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 107 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_D0]) 108 109 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 110 111 #define __UCONTEXT_SIZE 1024 112 113 #endif /* !_M68K_MCONTEXT_H_ */ 114