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1// This file is distributed under the University of Illinois Open Source
2// License. See LICENSE.TXT for details.
3
4#include "../assembly.h"
5
6// float __floatundisf(du_int a);
7
8#ifdef __x86_64__
9
10#ifndef __ELF__
11.literal4
12#endif
13two: .single 2.0
14
15#define REL_ADDR(_a)	(_a)(%rip)
16
17.text
18.align 4
19DEFINE_COMPILERRT_FUNCTION(__floatundisf)
20	movq		$1,			%rsi
21	testq		%rdi,		%rdi
22	js			1f
23	cvtsi2ssq	%rdi,		%xmm0
24	ret
25
261:	andq		%rdi,		%rsi
27	shrq		%rdi
28	orq			%rsi,		%rdi
29	cvtsi2ssq	%rdi,		%xmm0
30	mulss	REL_ADDR(two),	%xmm0
31	ret
32
33#endif // __x86_64__
34