1 /* $NetBSD: mcontext.h,v 1.5 2005/12/11 12:17:53 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 * 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 _M68K_MCONTEXT_H_ 40 #define _M68K_MCONTEXT_H_ 41 42 #ifdef _KERNEL 43 #include <m68k/cpuframe.h> 44 #endif 45 46 /* 47 * mcontext extensions to handle signal delivery. 48 */ 49 #define _UC_SETSTACK 0x00010000 50 #define _UC_CLRSTACK 0x00020000 51 52 /* 53 * General register state 54 */ 55 #define _NGREG 18 56 typedef int __greg_t; 57 typedef __greg_t __gregset_t[_NGREG]; 58 59 #define _REG_D0 0 60 #define _REG_D1 1 61 #define _REG_D2 2 62 #define _REG_D3 3 63 #define _REG_D4 4 64 #define _REG_D5 5 65 #define _REG_D6 6 66 #define _REG_D7 7 67 #define _REG_A0 8 68 #define _REG_A1 9 69 #define _REG_A2 10 70 #define _REG_A3 11 71 #define _REG_A4 12 72 #define _REG_A5 13 73 #define _REG_A6 14 74 #define _REG_A7 15 75 #define _REG_PC 16 76 #define _REG_PS 17 77 78 typedef struct { 79 int __fp_pcr; 80 int __fp_psr; 81 int __fp_piaddr; 82 int __fp_fpregs[8*3]; 83 } __fpregset_t; 84 85 typedef struct { 86 __gregset_t __gregs; /* General Register set */ 87 __fpregset_t __fpregs; /* Floating Point Register set */ 88 union { 89 long __mc_state[202]; /* Only need 308 bytes... */ 90 #if defined(_KERNEL) || defined(__M68K_MCONTEXT_PRIVATE) 91 struct { 92 /* Rest of the frame. */ 93 unsigned int __mcf_format; 94 unsigned int __mcf_vector; 95 union F_u __mcf_exframe; 96 /* Rest of the FPU frame. */ 97 union FPF_u1 __mcf_fpf_u1; 98 union FPF_u2 __mcf_fpf_u2; 99 } __mc_frame; 100 #endif /* _KERNEL || __M68K_MCONTEXT_PRIVATE */ 101 } __mc_pad; 102 } mcontext_t; 103 104 /* Note: no additional padding is to be performed in ucontext_t. */ 105 106 /* Machine-specific uc_flags value */ 107 #define _UC_M68K_UC_USER 0x40000000 108 109 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_A7]) 110 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 111 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_D0]) 112 113 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 114 115 #endif /* !_M68K_MCONTEXT_H_ */ 116