File: floatundisf.S

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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#include "../assembly.h"

// float __floatundisf(du_int a);

#ifdef __x86_64__

CONST_SECTION

	.balign 16
two:
	.single 2.0

#define REL_ADDR(_a)	(_a)(%rip)

.text
.balign 4
DEFINE_COMPILERRT_FUNCTION(__floatundisf)
	movq		$1,			%rsi
	testq		%rdi,		%rdi
	js			1f
	cvtsi2ssq	%rdi,		%xmm0
	ret

1:	andq		%rdi,		%rsi
	shrq		%rdi
	orq			%rsi,		%rdi
	cvtsi2ssq	%rdi,		%xmm0
	mulss	REL_ADDR(two),	%xmm0
	ret
END_COMPILERRT_FUNCTION(__floatundisf)

#endif // __x86_64__

NO_EXEC_STACK_DIRECTIVE