1// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 2// See https://llvm.org/LICENSE.txt for license information. 3// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 4 5#include "../assembly.h" 6 7// long double __floatundixf(du_int a);16 8 9#ifdef __i386__ 10 11CONST_SECTION 12 13 .balign 16 14twop52: 15 .quad 0x4330000000000000 16 17 .balign 16 18twop84_plus_twop52_neg: 19 .quad 0xc530000000100000 20 21 .balign 16 22twop84: 23 .quad 0x4530000000000000 24 25#define REL_ADDR(_a) (_a)-0b(%eax) 26 27.text 28.balign 4 29DEFINE_COMPILERRT_FUNCTION(__floatundixf) 30 calll 0f 310: popl %eax 32 movss 8(%esp), %xmm0 // hi 32 bits of input 33 movss 4(%esp), %xmm1 // lo 32 bits of input 34 orpd REL_ADDR(twop84), %xmm0 // 2^84 + hi (as a double) 35 orpd REL_ADDR(twop52), %xmm1 // 2^52 + lo (as a double) 36 addsd REL_ADDR(twop84_plus_twop52_neg), %xmm0 // hi - 2^52 (no rounding occurs) 37 movsd %xmm1, 4(%esp) 38 fldl 4(%esp) 39 movsd %xmm0, 4(%esp) 40 faddl 4(%esp) 41 ret 42END_COMPILERRT_FUNCTION(__floatundixf) 43 44#endif // __i386__ 45 46NO_EXEC_STACK_DIRECTIVE 47 48