1222656Sed// This file is dual licensed under the MIT and the University of Illinois Open
2222656Sed// Source Licenses. See LICENSE.TXT for details.
3214152Sed
4214152Sed#include "../assembly.h"
5214152Sed
6214152Sed// long double __floatundixf(du_int a);16
7214152Sed
8214152Sed#ifdef __i386__
9214152Sed
10214152Sed#ifndef __ELF__
11214152Sed.const
12214152Sed#endif
13214152Sed.align 4
14214152Sedtwop52: .quad 0x4330000000000000
15214152Sedtwop84_plus_twop52_neg:
16214152Sed		.quad 0xc530000000100000
17214152Sedtwop84: .quad 0x4530000000000000
18214152Sed
19214152Sed#define REL_ADDR(_a)	(_a)-0b(%eax)
20214152Sed
21214152Sed.text
22214152Sed.align 4
23214152SedDEFINE_COMPILERRT_FUNCTION(__floatundixf)
24214152Sed	calll	0f
25214152Sed0:	popl	%eax
26214152Sed	movss	8(%esp),			%xmm0	// hi 32 bits of input
27214152Sed	movss	4(%esp),			%xmm1	// lo 32 bits of input
28214152Sed	orpd	REL_ADDR(twop84),	%xmm0	// 2^84 + hi (as a double)
29214152Sed	orpd	REL_ADDR(twop52),	%xmm1	// 2^52 + lo (as a double)
30214152Sed	addsd	REL_ADDR(twop84_plus_twop52_neg),	%xmm0	// hi - 2^52 (no rounding occurs)
31214152Sed	movsd	%xmm1,				4(%esp)
32214152Sed	fldl	4(%esp)
33214152Sed	movsd	%xmm0,				4(%esp)
34214152Sed	faddl	4(%esp)
35214152Sed	ret
36214152Sed
37214152Sed#endif // __i386__
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