15b2ba9d3SPiotr Jasiukajtis /*
25b2ba9d3SPiotr Jasiukajtis * CDDL HEADER START
35b2ba9d3SPiotr Jasiukajtis *
45b2ba9d3SPiotr Jasiukajtis * The contents of this file are subject to the terms of the
55b2ba9d3SPiotr Jasiukajtis * Common Development and Distribution License (the "License").
65b2ba9d3SPiotr Jasiukajtis * You may not use this file except in compliance with the License.
75b2ba9d3SPiotr Jasiukajtis *
85b2ba9d3SPiotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
95b2ba9d3SPiotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
105b2ba9d3SPiotr Jasiukajtis * See the License for the specific language governing permissions
115b2ba9d3SPiotr Jasiukajtis * and limitations under the License.
125b2ba9d3SPiotr Jasiukajtis *
135b2ba9d3SPiotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
145b2ba9d3SPiotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
155b2ba9d3SPiotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the
165b2ba9d3SPiotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying
175b2ba9d3SPiotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner]
185b2ba9d3SPiotr Jasiukajtis *
195b2ba9d3SPiotr Jasiukajtis * CDDL HEADER END
205b2ba9d3SPiotr Jasiukajtis */
215b2ba9d3SPiotr Jasiukajtis
225b2ba9d3SPiotr Jasiukajtis /*
235b2ba9d3SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
245b2ba9d3SPiotr Jasiukajtis */
255b2ba9d3SPiotr Jasiukajtis /*
265b2ba9d3SPiotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
275b2ba9d3SPiotr Jasiukajtis * Use is subject to license terms.
285b2ba9d3SPiotr Jasiukajtis */
295b2ba9d3SPiotr Jasiukajtis
30*a9d3dcd5SRichard Lowe #pragma weak __fex_get_handling = fex_get_handling
31*a9d3dcd5SRichard Lowe #pragma weak __fex_set_handling = fex_set_handling
32*a9d3dcd5SRichard Lowe #pragma weak __fex_getexcepthandler = fex_getexcepthandler
33*a9d3dcd5SRichard Lowe #pragma weak __fex_setexcepthandler = fex_setexcepthandler
345b2ba9d3SPiotr Jasiukajtis
355b2ba9d3SPiotr Jasiukajtis #include <fenv.h>
365b2ba9d3SPiotr Jasiukajtis #include <ucontext.h>
375b2ba9d3SPiotr Jasiukajtis #include <thread.h>
385b2ba9d3SPiotr Jasiukajtis #include "fex_handler.h"
395b2ba9d3SPiotr Jasiukajtis
fex_get_handling(int e)405b2ba9d3SPiotr Jasiukajtis int fex_get_handling(int e)
415b2ba9d3SPiotr Jasiukajtis {
425b2ba9d3SPiotr Jasiukajtis struct fex_handler_data *thr_handlers;
435b2ba9d3SPiotr Jasiukajtis int i;
445b2ba9d3SPiotr Jasiukajtis
455b2ba9d3SPiotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
465b2ba9d3SPiotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++)
475b2ba9d3SPiotr Jasiukajtis if (e & (1 << i))
485b2ba9d3SPiotr Jasiukajtis return thr_handlers[i].__mode;
495b2ba9d3SPiotr Jasiukajtis return FEX_NOHANDLER;
505b2ba9d3SPiotr Jasiukajtis }
515b2ba9d3SPiotr Jasiukajtis
fex_set_handling(int e,int mode,void (* handler)())525b2ba9d3SPiotr Jasiukajtis int fex_set_handling(int e, int mode, void (*handler)())
535b2ba9d3SPiotr Jasiukajtis {
545b2ba9d3SPiotr Jasiukajtis struct fex_handler_data *thr_handlers;
555b2ba9d3SPiotr Jasiukajtis int i;
565b2ba9d3SPiotr Jasiukajtis
575b2ba9d3SPiotr Jasiukajtis if (e & ~((1 << FEX_NUM_EXC) - 1))
585b2ba9d3SPiotr Jasiukajtis return 0;
595b2ba9d3SPiotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
605b2ba9d3SPiotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++) {
615b2ba9d3SPiotr Jasiukajtis if (e & (1 << i)) {
625b2ba9d3SPiotr Jasiukajtis thr_handlers[i].__mode = mode;
635b2ba9d3SPiotr Jasiukajtis thr_handlers[i].__handler = handler;
645b2ba9d3SPiotr Jasiukajtis }
655b2ba9d3SPiotr Jasiukajtis }
665b2ba9d3SPiotr Jasiukajtis __fex_update_te();
675b2ba9d3SPiotr Jasiukajtis return 1;
685b2ba9d3SPiotr Jasiukajtis }
695b2ba9d3SPiotr Jasiukajtis
fex_getexcepthandler(fex_handler_t * buf,int e)705b2ba9d3SPiotr Jasiukajtis void fex_getexcepthandler(fex_handler_t *buf, int e)
715b2ba9d3SPiotr Jasiukajtis {
725b2ba9d3SPiotr Jasiukajtis struct fex_handler_data *thr_handlers;
735b2ba9d3SPiotr Jasiukajtis int i;
745b2ba9d3SPiotr Jasiukajtis
755b2ba9d3SPiotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
765b2ba9d3SPiotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++)
775b2ba9d3SPiotr Jasiukajtis if (e & (1 << i))
785b2ba9d3SPiotr Jasiukajtis (*buf)[i] = thr_handlers[i];
795b2ba9d3SPiotr Jasiukajtis }
805b2ba9d3SPiotr Jasiukajtis
fex_setexcepthandler(const fex_handler_t * buf,int e)815b2ba9d3SPiotr Jasiukajtis void fex_setexcepthandler(const fex_handler_t *buf, int e)
825b2ba9d3SPiotr Jasiukajtis {
835b2ba9d3SPiotr Jasiukajtis struct fex_handler_data *thr_handlers;
845b2ba9d3SPiotr Jasiukajtis int i;
855b2ba9d3SPiotr Jasiukajtis
865b2ba9d3SPiotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
875b2ba9d3SPiotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++)
885b2ba9d3SPiotr Jasiukajtis if (e & (1 << i))
895b2ba9d3SPiotr Jasiukajtis thr_handlers[i] = (*buf)[i];
905b2ba9d3SPiotr Jasiukajtis __fex_update_te();
915b2ba9d3SPiotr Jasiukajtis }
92