1 /* $NetBSD: mcontext.h,v 1.4 2003/10/08 22:43:01 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2001, 2002 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 and by Jason R. Thorpe of Wasabi Systems, Inc. 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 * $FreeBSD$ 39 */ 40 41 #ifndef _MACHINE_MCONTEXT_H_ 42 #define _MACHINE_MCONTEXT_H_ 43 /* 44 * General register state 45 */ 46 #define _NGREG 17 47 typedef unsigned int __greg_t; 48 typedef __greg_t __gregset_t[_NGREG]; 49 50 #define _REG_R0 0 51 #define _REG_R1 1 52 #define _REG_R2 2 53 #define _REG_R3 3 54 #define _REG_R4 4 55 #define _REG_R5 5 56 #define _REG_R6 6 57 #define _REG_R7 7 58 #define _REG_R8 8 59 #define _REG_R9 9 60 #define _REG_R10 10 61 #define _REG_R11 11 62 #define _REG_R12 12 63 #define _REG_R13 13 64 #define _REG_R14 14 65 #define _REG_R15 15 66 #define _REG_CPSR 16 67 /* Convenience synonyms */ 68 #define _REG_FP _REG_R11 69 #define _REG_SP _REG_R13 70 #define _REG_LR _REG_R14 71 #define _REG_PC _REG_R15 72 73 /* 74 * Floating point register state 75 */ 76 /* Note: the storage layout of this structure must be identical to ARMFPE! */ 77 typedef struct { 78 unsigned int __fp_fpsr; 79 struct { 80 unsigned int __fp_exponent; 81 unsigned int __fp_mantissa_hi; 82 unsigned int __fp_mantissa_lo; 83 } __fp_fr[8]; 84 } __fpregset_t; 85 86 typedef struct { 87 unsigned int __vfp_fpscr; 88 unsigned int __vfp_fstmx[33]; 89 unsigned int __vfp_fpsid; 90 } __vfpregset_t; 91 92 typedef struct { 93 __gregset_t __gregs; 94 union { 95 __fpregset_t __fpregs; 96 __vfpregset_t __vfpregs; 97 } __fpu; 98 } mcontext_t; 99 100 /* Machine-dependent uc_flags */ 101 #define _UC_ARM_VFP 0x00010000 /* FPU field is VFP */ 102 103 /* used by signal delivery to indicate status of signal stack */ 104 #define _UC_SETSTACK 0x00020000 105 #define _UC_CLRSTACK 0x00040000 106 107 #define _UC_MACHINE_PAD 3 /* Padding appended to ucontext_t */ 108 109 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP]) 110 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 111 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0]) 112 113 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 114 115 #endif /* !_MACHINE_MCONTEXT_H_ */ 116