forked from OSchip/llvm-project
38 lines
883 B
ArmAsm
38 lines
883 B
ArmAsm
// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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#include "../assembly.h"
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// long double __floatundixf(du_int a);16
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#ifdef __i386__
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#ifndef __ELF__
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.const
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#endif
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.align 4
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twop52: .quad 0x4330000000000000
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twop84_plus_twop52_neg:
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.quad 0xc530000000100000
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twop84: .quad 0x4530000000000000
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#define REL_ADDR(_a) (_a)-0b(%eax)
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.text
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.align 4
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DEFINE_COMPILERRT_FUNCTION(__floatundixf)
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calll 0f
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0: popl %eax
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movss 8(%esp), %xmm0 // hi 32 bits of input
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movss 4(%esp), %xmm1 // lo 32 bits of input
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orpd REL_ADDR(twop84), %xmm0 // 2^84 + hi (as a double)
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orpd REL_ADDR(twop52), %xmm1 // 2^52 + lo (as a double)
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addsd REL_ADDR(twop84_plus_twop52_neg), %xmm0 // hi - 2^52 (no rounding occurs)
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movsd %xmm1, 4(%esp)
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fldl 4(%esp)
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movsd %xmm0, 4(%esp)
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faddl 4(%esp)
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ret
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#endif // __i386__
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