1 /* $NetBSD: mcontext.h,v 1.6 2008/04/28 20:23:14 martin 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 * 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 _ARM_MCONTEXT_H_ 33 #define _ARM_MCONTEXT_H_ 34 35 /* 36 * General register state 37 */ 38 #define _NGREG 17 39 typedef unsigned int __greg_t; 40 typedef __greg_t __gregset_t[_NGREG]; 41 42 #define _REG_R0 0 43 #define _REG_R1 1 44 #define _REG_R2 2 45 #define _REG_R3 3 46 #define _REG_R4 4 47 #define _REG_R5 5 48 #define _REG_R6 6 49 #define _REG_R7 7 50 #define _REG_R8 8 51 #define _REG_R9 9 52 #define _REG_R10 10 53 #define _REG_R11 11 54 #define _REG_R12 12 55 #define _REG_R13 13 56 #define _REG_R14 14 57 #define _REG_R15 15 58 #define _REG_CPSR 16 59 /* Convenience synonyms */ 60 #define _REG_FP _REG_R11 61 #define _REG_SP _REG_R13 62 #define _REG_LR _REG_R14 63 #define _REG_PC _REG_R15 64 65 /* 66 * Floating point register state 67 */ 68 /* Note: the storage layout of this structure must be identical to ARMFPE! */ 69 typedef struct { 70 unsigned int __fp_fpsr; 71 struct { 72 unsigned int __fp_exponent; 73 unsigned int __fp_mantissa_hi; 74 unsigned int __fp_mantissa_lo; 75 } __fp_fr[8]; 76 } __fpregset_t; 77 78 typedef struct { 79 unsigned int __vfp_fpscr; 80 unsigned int __vfp_fstmx[33]; 81 unsigned int __vfp_fpsid; 82 } __vfpregset_t; 83 84 typedef struct { 85 __gregset_t __gregs; 86 union { 87 __fpregset_t __fpregs; 88 __vfpregset_t __vfpregs; 89 } __fpu; 90 } mcontext_t; 91 92 /* Machine-dependent uc_flags */ 93 #define _UC_ARM_VFP 0x00010000 /* FPU field is VFP */ 94 95 /* used by signal delivery to indicate status of signal stack */ 96 #define _UC_SETSTACK 0x00020000 97 #define _UC_CLRSTACK 0x00040000 98 99 #define _UC_MACHINE_PAD 3 /* Padding appended to ucontext_t */ 100 101 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP]) 102 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 103 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0]) 104 105 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 106 107 #endif /* !_ARM_MCONTEXT_H_ */ 108