25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER START
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * The contents of this file are subject to the terms of the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Common Development and Distribution License (the "License").
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You may not use this file except in compliance with the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * See the License for the specific language governing permissions
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * and limitations under the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner]
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER END
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Use is subject to license terms.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
ddc0e0b53c661f6e439e3b7072b3ef353eadb4afRichard Lowe#pragma weak __fex_get_handling = fex_get_handling
ddc0e0b53c661f6e439e3b7072b3ef353eadb4afRichard Lowe#pragma weak __fex_set_handling = fex_set_handling
ddc0e0b53c661f6e439e3b7072b3ef353eadb4afRichard Lowe#pragma weak __fex_getexcepthandler = fex_getexcepthandler
ddc0e0b53c661f6e439e3b7072b3ef353eadb4afRichard Lowe#pragma weak __fex_setexcepthandler = fex_setexcepthandler
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <fenv.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <ucontext.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <thread.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include "fex_handler.h"
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint fex_get_handling(int e)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis struct fex_handler_data *thr_handlers;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis int i;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (e & (1 << i))
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return thr_handlers[i].__mode;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return FEX_NOHANDLER;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint fex_set_handling(int e, int mode, void (*handler)())
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis struct fex_handler_data *thr_handlers;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis int i;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (e & ~((1 << FEX_NUM_EXC) - 1))
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return 0;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++) {
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (e & (1 << i)) {
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers[i].__mode = mode;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers[i].__handler = handler;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis }
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis }
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fex_update_te();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return 1;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisvoid fex_getexcepthandler(fex_handler_t *buf, int e)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis struct fex_handler_data *thr_handlers;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis int i;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (e & (1 << i))
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (*buf)[i] = thr_handlers[i];
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisvoid fex_setexcepthandler(const fex_handler_t *buf, int e)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis struct fex_handler_data *thr_handlers;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis int i;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers = __fex_get_thr_handlers();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis for (i = 0; i < FEX_NUM_EXC; i++)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (e & (1 << i))
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis thr_handlers[i] = (*buf)[i];
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fex_update_te();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}