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 2011 Nexenta Systems, Inc. All rights reserved. 24 */ 25 /* 26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 #pragma weak fex_merge_flags = __fex_merge_flags 31 32 #pragma weak feholdexcept = __feholdexcept 33 #pragma weak feupdateenv = __feupdateenv 34 #pragma weak fegetenv = __fegetenv 35 #pragma weak fesetenv = __fesetenv 36 37 #pragma weak feholdexcept96 = __feholdexcept96 38 #pragma weak feupdateenv96 = __feupdateenv 39 #pragma weak fegetenv96 = __fegetenv 40 #pragma weak fesetenv96 = __fesetenv 41 42 #include "fenv_synonyms.h" 43 #include <fenv.h> 44 #include <ucontext.h> 45 #include <thread.h> 46 #include "fex_handler.h" 47 #include "fenv_inlines.h" 48 49 const fenv_t __fenv_dfl_env = { 50 { 51 { FEX_NONSTOP, (void(*)())0 }, 52 { FEX_NONSTOP, (void(*)())0 }, 53 { FEX_NONSTOP, (void(*)())0 }, 54 { FEX_NONSTOP, (void(*)())0 }, 55 { FEX_NONSTOP, (void(*)())0 }, 56 { FEX_NONSTOP, (void(*)())0 }, 57 { FEX_NONSTOP, (void(*)())0 }, 58 { FEX_NONSTOP, (void(*)())0 }, 59 { FEX_NONSTOP, (void(*)())0 }, 60 { FEX_NONSTOP, (void(*)())0 }, 61 { FEX_NONSTOP, (void(*)())0 }, 62 { FEX_NONSTOP, (void(*)())0 }, 63 }, 64 #ifdef __x86 65 0x13000000 66 #else 67 0 68 #endif 69 }; 70 71 int feholdexcept(fenv_t *p) 72 { 73 (void) fegetenv(p); 74 (void) feclearexcept(FE_ALL_EXCEPT); 75 return !fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL); 76 } 77 78 int feholdexcept96(fenv_t *p) 79 { 80 (void) fegetenv(p); 81 (void) feclearexcept(FE_ALL_EXCEPT); 82 return fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL); 83 } 84 85 int feupdateenv(const fenv_t *p) 86 { 87 unsigned long fsr; 88 89 __fenv_getfsr(&fsr); 90 (void) fesetenv(p); 91 (void) feraiseexcept((int)__fenv_get_ex(fsr)); 92 return 0; 93 } 94 95 int fegetenv(fenv_t *p) 96 { 97 fex_getexcepthandler(&p->__handlers, FEX_ALL); 98 __fenv_getfsr(&p->__fsr); 99 return 0; 100 } 101 102 int fesetenv(const fenv_t *p) 103 { 104 __fenv_setfsr(&p->__fsr); 105 fex_setexcepthandler(&p->__handlers, FEX_ALL); 106 return 0; 107 } 108 109 void fex_merge_flags(const fenv_t *p) 110 { 111 unsigned long fsr; 112 113 __fenv_getfsr(&fsr); 114 __fenv_set_ex(fsr, __fenv_get_ex(fsr) | __fenv_get_ex(p->__fsr)); 115 __fenv_setfsr(&fsr); 116 if (fex_get_log()) 117 __fex_update_te(); 118 } 119