llvm-project/compiler-rt/lib/builtins/x86_64/floatundisf.S

36 lines
595 B
ArmAsm

// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
#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__