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