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_get_handling = fex_get_handling
31 #pragma weak __fex_set_handling = fex_set_handling
32 #pragma weak __fex_getexcepthandler = fex_getexcepthandler
33 #pragma weak __fex_setexcepthandler = fex_setexcepthandler
34
35 #include <fenv.h>
36 #include <ucontext.h>
37 #include <thread.h>
38 #include "fex_handler.h"
39
fex_get_handling(int e)40 int fex_get_handling(int e)
41 {
42 struct fex_handler_data *thr_handlers;
43 int i;
44
45 thr_handlers = __fex_get_thr_handlers();
46 for (i = 0; i < FEX_NUM_EXC; i++)
47 if (e & (1 << i))
48 return thr_handlers[i].__mode;
49 return FEX_NOHANDLER;
50 }
51
fex_set_handling(int e,int mode,void (* handler)())52 int fex_set_handling(int e, int mode, void (*handler)())
53 {
54 struct fex_handler_data *thr_handlers;
55 int i;
56
57 if (e & ~((1 << FEX_NUM_EXC) - 1))
58 return 0;
59 thr_handlers = __fex_get_thr_handlers();
60 for (i = 0; i < FEX_NUM_EXC; i++) {
61 if (e & (1 << i)) {
62 thr_handlers[i].__mode = mode;
63 thr_handlers[i].__handler = handler;
64 }
65 }
66 __fex_update_te();
67 return 1;
68 }
69
fex_getexcepthandler(fex_handler_t * buf,int e)70 void fex_getexcepthandler(fex_handler_t *buf, int e)
71 {
72 struct fex_handler_data *thr_handlers;
73 int i;
74
75 thr_handlers = __fex_get_thr_handlers();
76 for (i = 0; i < FEX_NUM_EXC; i++)
77 if (e & (1 << i))
78 (*buf)[i] = thr_handlers[i];
79 }
80
fex_setexcepthandler(const fex_handler_t * buf,int e)81 void fex_setexcepthandler(const fex_handler_t *buf, int e)
82 {
83 struct fex_handler_data *thr_handlers;
84 int i;
85
86 thr_handlers = __fex_get_thr_handlers();
87 for (i = 0; i < FEX_NUM_EXC; i++)
88 if (e & (1 << i))
89 thr_handlers[i] = (*buf)[i];
90 __fex_update_te();
91 }
92