initial import of NetBSD tree

1 files changed, 81 insertions, 0 deletions

diff --git a/lib/libc/arch/i386/gen/fixunsdfsi.S b/lib/libc/arch/i386/gen/fixunsdfsi.S
new file mode 100644
index 00000000000..621d63cc711
--- /dev/null
+++ b/lib/libc/arch/i386/gen/fixunsdfsi.S
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	from: @(#)fixunsdfsi.s	5.1	12/17/90
+ *	$Id: fixunsdfsi.S,v 1.1 1995/10/18 08:41:23 deraadt Exp $
+ */
+
+#if defined(LIBC_SCCS)
+	.text
+	.asciz "$Id: fixunsdfsi.S,v 1.1 1995/10/18 08:41:23 deraadt Exp $"
+#endif
+
+#include "DEFS.h"
+#include "SYS.h"
+
+ENTRY(__fixunsdfsi)
+	fldl	4(%esp)		/* argument double to accum stack */
+	frndint			/* create integer */
+#ifdef PIC
+	PIC_PROLOGUE
+	leal	PIC_GOTOFF(fbiggestsigned),%eax
+	PIC_EPILOGUE
+	fcoml	(%eax)
+#else
+	fcoml	fbiggestsigned	/* bigger than biggest signed? */
+#endif
+	fstsw	%ax
+	sahf
+	jnb	1f
+
+	fistpl	4(%esp)
+	movl	4(%esp),%eax
+	ret
+
+1:
+#ifdef PIC
+	PIC_PROLOGUE
+	leal	PIC_GOTOFF(fbiggestsigned),%eax
+	PIC_EPILOGUE
+	fsubl	(%eax)
+#else
+	fsubl	fbiggestsigned	/* reduce for proper conversion */
+#endif
+	fistpl	4(%esp)		/* convert */
+	movl	4(%esp),%eax
+	orl	$0x80000000,%eax	/* restore bias */
+	ret
+
+fbiggestsigned:	.double	0r2147483648.0