1// This file is dual licensed under the MIT and the University of Illinois Open 2// Source Licenses. See LICENSE.TXT for details. 3 4#include "../assembly.h" 5 6// long double __floatundixf(du_int a);16 7 8#ifdef __i386__ 9 10#ifndef __ELF__ 11.const 12#endif 13.align 4 14twop52: .quad 0x4330000000000000 15twop84_plus_twop52_neg: 16 .quad 0xc530000000100000 17twop84: .quad 0x4530000000000000 18 19#define REL_ADDR(_a) (_a)-0b(%eax) 20 21.text 22.align 4 23DEFINE_COMPILERRT_FUNCTION(__floatundixf) 24 calll 0f 250: popl %eax 26 movss 8(%esp), %xmm0 // hi 32 bits of input 27 movss 4(%esp), %xmm1 // lo 32 bits of input 28 orpd REL_ADDR(twop84), %xmm0 // 2^84 + hi (as a double) 29 orpd REL_ADDR(twop52), %xmm1 // 2^52 + lo (as a double) 30 addsd REL_ADDR(twop84_plus_twop52_neg), %xmm0 // hi - 2^52 (no rounding occurs) 31 movsd %xmm1, 4(%esp) 32 fldl 4(%esp) 33 movsd %xmm0, 4(%esp) 34 faddl 4(%esp) 35 ret 36 37#endif // __i386__ 38