693 Opensource replacement of sunwlibm

Reviewed by: Igor Kozhukhov ikozhukhov@gmail.com
Reviewed by: Keith M Wesolowski <keith.wesolowski@joyent.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/usr/src/lib/libm/common/m9x/fex_handler.c b/usr/src/lib/libm/common/m9x/fex_handler.c
new file mode 100644
index 0000000000..9e6210e523
--- /dev/null
+++ b/usr/src/lib/libm/common/m9x/fex_handler.c
@@ -0,0 +1,92 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma weak fex_get_handling = __fex_get_handling
+#pragma weak fex_set_handling = __fex_set_handling
+#pragma weak fex_getexcepthandler = __fex_getexcepthandler
+#pragma weak fex_setexcepthandler = __fex_setexcepthandler
+
+#include "fenv_synonyms.h"
+#include <fenv.h>
+#include <ucontext.h>
+#include <thread.h>
+#include "fex_handler.h"
+
+int fex_get_handling(int e)
+{
+	struct fex_handler_data	*thr_handlers;
+	int						i;
+
+	thr_handlers = __fex_get_thr_handlers();
+	for (i = 0; i < FEX_NUM_EXC; i++)
+		if (e & (1 << i))
+			return thr_handlers[i].__mode;
+	return FEX_NOHANDLER;
+}
+
+int fex_set_handling(int e, int mode, void (*handler)())
+{
+	struct fex_handler_data	*thr_handlers;
+	int						i;
+
+	if (e & ~((1 << FEX_NUM_EXC) - 1))
+		return 0;
+	thr_handlers = __fex_get_thr_handlers();
+	for (i = 0; i < FEX_NUM_EXC; i++) {
+		if (e & (1 << i)) {
+			thr_handlers[i].__mode = mode;
+			thr_handlers[i].__handler = handler;
+		}
+	}
+	__fex_update_te();
+	return 1;
+}
+
+void fex_getexcepthandler(fex_handler_t *buf, int e)
+{
+	struct fex_handler_data	*thr_handlers;
+	int						i;
+
+	thr_handlers = __fex_get_thr_handlers();
+	for (i = 0; i < FEX_NUM_EXC; i++)
+		if (e & (1 << i))
+			(*buf)[i] = thr_handlers[i];
+}
+
+void fex_setexcepthandler(const fex_handler_t *buf, int e)
+{
+	struct fex_handler_data	*thr_handlers;
+	int						i;
+
+	thr_handlers = __fex_get_thr_handlers();
+	for (i = 0; i < FEX_NUM_EXC; i++)
+		if (e & (1 << i))
+			thr_handlers[i] = (*buf)[i];
+	__fex_update_te();
+}