1 files changed, 92 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/fpu/s_frexpl.S b/REORG.TODO/sysdeps/i386/fpu/s_frexpl.S
new file mode 100644
index 0000000000..04f28888d2
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/fpu/s_frexpl.S
@@ -0,0 +1,92 @@
+/* ix87 specific frexp implementation for long double.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <machine/asm.h>
+
+	.section .rodata
+
+	.align ALIGNARG(4)
+	.type two64,@object
+two64:	.byte 0, 0, 0, 0, 0, 0, 0xf0, 0x43
+	ASM_SIZE_DIRECTIVE(two64)
+
+#ifdef PIC
+#define MO(op) op##@GOTOFF(%edx)
+#else
+#define MO(op) op
+#endif
+
+#define PARMS	4		/* no space for saved regs */
+#define VAL0	PARMS
+#define VAL1	VAL0+4
+#define VAL2	VAL1+4
+#define EXPP	VAL2+4
+
+	.text
+ENTRY (__frexpl)
+
+	movl	VAL0(%esp), %ecx
+	movl	VAL2(%esp), %eax
+	orl	VAL1(%esp), %ecx
+	movl	%eax, %edx
+	andl	$0x7fff, %eax
+	orl	%eax, %ecx
+	jz	1f
+	xorl	%ecx, %ecx
+	cmpl	$0x7fff, %eax
+	je	3f
+
+	cmpl	$0, %eax
+	jne	2f
+
+	fldt	VAL0(%esp)
+#ifdef	PIC
+	LOAD_PIC_REG (dx)
+#endif
+
+	fmull	MO(two64)	/* It's not necessary to use a 80bit factor */
+	movl	$-64, %ecx
+	fstpt	VAL0(%esp)
+	fwait
+	movl	VAL2(%esp), %eax
+	movl	%eax, %edx
+	andl	$0x7fff, %eax
+
+2:	andl	$0x8000, %edx
+	subl	$16382, %eax
+	orl	$0x3ffe, %edx
+	addl	%eax, %ecx
+	movl	%edx, VAL2(%esp)
+
+	/* Store %ecx in the variable pointed to by the second argument,
+	   get the factor from the stack and return.  */
+1:	movl	EXPP(%esp), %eax
+	fldt	VAL0(%esp)
+	movl	%ecx, (%eax)
+
+	ret
+
+	/* Infinity or NaN; ensure signaling NaNs are quieted.  */
+3:	movl	EXPP(%esp), %eax
+	fldt	VAL0(%esp)
+	fadd	%st
+	movl	%ecx, (%eax)
+	ret
+END (__frexpl)
+weak_alias (__frexpl, frexpl)