1 /* $NetBSD: mcontext.h,v 1.5 2005/12/11 12:18:58 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 _SH3_MCONTEXT_H_ 40 #define _SH3_MCONTEXT_H_ 41 42 /* 43 * Layout of mcontext_t for the sh3 architecture. 44 */ 45 46 #define _NGREG 22 47 typedef int __greg_t; 48 typedef __greg_t __gregset_t[_NGREG]; 49 50 #define _REG_EXPEVT 0 51 #define _REG_PC 1 52 #define _REG_SR 2 53 #define _REG_MACL 3 54 #define _REG_MACH 4 55 #define _REG_PR 5 56 #define _REG_R14 6 57 #define _REG_R13 7 58 #define _REG_R12 8 59 #define _REG_R11 9 60 #define _REG_R10 10 61 #define _REG_R9 11 62 #define _REG_R8 12 63 #define _REG_R7 13 64 #define _REG_R6 14 65 #define _REG_R5 15 66 #define _REG_R4 16 67 #define _REG_R3 17 68 #define _REG_R2 18 69 #define _REG_R1 19 70 #define _REG_R0 20 71 #define _REG_R15 21 72 /* Convenience synonym */ 73 #define _REG_SP _REG_R15 74 75 /* 76 * FPU state description. 77 * XXX: kernel doesn't support FPU yet, so this is just a placeholder. 78 */ 79 typedef struct { 80 int __fpr_fpscr; 81 int __fpr_fpul; 82 /* XXX: redefine as a union when we do support FPU */ 83 int __fpr_regs[32]; /* SH3E has 16, SH4 has 32 */ 84 } __fpregset_t; 85 86 typedef struct { 87 __gregset_t __gregs; 88 __fpregset_t __fpregs; 89 } mcontext_t; 90 91 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP]) 92 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 93 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0]) 94 95 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 96 97 /* 98 * Machine dependent uc_flags 99 */ 100 #define _UC_SETSTACK 0x10000 101 #define _UC_CLRSTACK 0x20000 102 103 104 #endif /* !_SH3_MCONTEXT_H_ */ 105