1 // This file is dual licensed under the MIT and the University of Illinois Open
2 // Source Licenses. See LICENSE.TXT for details.
4 #include "../assembly.h"
6 // long double __floatundixf(du_int a);16
14 .quad 0x4330000000000000
17 twop84_plus_twop52_neg:
18 .quad 0xc530000000100000
22 .quad 0x4530000000000000
24 #define REL_ADDR(_a) (_a)-0b(%eax)
28 DEFINE_COMPILERRT_FUNCTION(__floatundixf)
31 movss 8(%esp), %xmm0 // hi 32 bits of input
32 movss 4(%esp), %xmm1 // lo 32 bits of input
33 orpd REL_ADDR(twop84), %xmm0 // 2^84 + hi (as a double)
34 orpd REL_ADDR(twop52), %xmm1 // 2^52 + lo (as a double)
35 addsd REL_ADDR(twop84_plus_twop52_neg), %xmm0 // hi - 2^52 (no rounding occurs)
41 END_COMPILERRT_FUNCTION(__floatundixf)
45 NO_EXEC_STACK_DIRECTIVE