1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 24 * 25 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 29 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 30 /* All Rights Reserved */ 31 32 #ifndef _SYS_UCONTEXT_H 33 #define _SYS_UCONTEXT_H 34 35 #include <sys/feature_tests.h> 36 37 #include <sys/types.h> 38 #include <sys/mcontext.h> 39 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 40 #include <sys/signal.h> 41 #endif 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 /* 48 * Inclusion of <sys/signal.h> for sigset_t and stack_t definitions 49 * breaks XPG4v2 namespace. Therefore we must duplicate the defines 50 * for these types here when _XPG4_2 is defined. 51 */ 52 53 #if defined(_XPG4_2) && !defined(__EXTENSIONS__) 54 #ifndef _SIGSET_T 55 #define _SIGSET_T 56 typedef struct { /* signal set type */ 57 unsigned int __sigbits[4]; 58 } sigset_t; 59 #endif /* _SIGSET_T */ 60 61 #ifndef _STACK_T 62 #define _STACK_T 63 typedef struct { 64 void *ss_sp; 65 size_t ss_size; 66 int ss_flags; 67 } stack_t; 68 69 #endif /* _STACK_T */ 70 #endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */ 71 72 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 73 typedef struct ucontext ucontext_t; 74 #else 75 typedef struct __ucontext ucontext_t; 76 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 77 78 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 79 struct ucontext { 80 #else 81 struct __ucontext { 82 #endif 83 uint_t uc_flags; 84 ucontext_t *uc_link; 85 sigset_t uc_sigmask; 86 stack_t uc_stack; 87 mcontext_t uc_mcontext; 88 #ifdef __sparcv9 89 long uc_filler[4]; 90 #else /* __sparcv9 */ 91 long uc_filler[23]; 92 #endif /* __sparcv9 */ 93 }; 94 95 #ifdef _SYSCALL32 96 97 /* Kernel view of user ILP32 ucontext structure */ 98 99 typedef struct ucontext32 { 100 uint32_t uc_flags; 101 caddr32_t uc_link; 102 sigset_t uc_sigmask; 103 stack32_t uc_stack; 104 mcontext32_t uc_mcontext; 105 int32_t uc_filler[23]; 106 } ucontext32_t; 107 108 #ifdef _KERNEL 109 extern void ucontext_32ton(const ucontext32_t *, ucontext_t *, 110 const struct fq32 *, struct _fq *); 111 extern void fpuregset_nto32(const fpregset_t *, fpregset32_t *, struct fq32 *); 112 #endif 113 114 #endif /* _SYSCALL32 */ 115 116 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 117 #define GETCONTEXT 0 118 #define SETCONTEXT 1 119 #define GETUSTACK 2 120 #define SETUSTACK 3 121 122 /* 123 * values for uc_flags 124 * these are implementation dependent flags, that should be hidden 125 * from the user interface, defining which elements of ucontext 126 * are valid, and should be restored on call to setcontext 127 */ 128 129 #define UC_SIGMASK 0x01 130 #define UC_STACK 0x02 131 #define UC_CPU 0x04 132 #define UC_MAU 0x08 133 #define UC_FPU UC_MAU 134 #define UC_INTR 0x10 135 #define UC_ASR 0x20 136 137 #define UC_MCONTEXT (UC_CPU|UC_FPU|UC_ASR) 138 139 /* 140 * UC_ALL specifies the default context 141 */ 142 143 #define UC_ALL (UC_SIGMASK|UC_STACK|UC_MCONTEXT) 144 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 145 146 #ifdef _KERNEL 147 extern void savecontext(ucontext_t *, const k_sigset_t *); 148 extern void restorecontext(ucontext_t *); 149 150 #ifdef _SYSCALL32 151 extern void savecontext32(ucontext32_t *, const k_sigset_t *, struct fq32 *); 152 #endif 153 #endif 154 155 #ifdef __cplusplus 156 } 157 #endif 158 159 #endif /* _SYS_UCONTEXT_H */ 160