1*7c3d14c8STreehugger Robot// This file is dual licensed under the MIT and the University of Illinois Open 2*7c3d14c8STreehugger Robot// Source Licenses. See LICENSE.TXT for details. 3*7c3d14c8STreehugger Robot 4*7c3d14c8STreehugger Robot#include "../assembly.h" 5*7c3d14c8STreehugger Robot 6*7c3d14c8STreehugger Robot// long double __floatundixf(du_int a);16 7*7c3d14c8STreehugger Robot 8*7c3d14c8STreehugger Robot#ifdef __i386__ 9*7c3d14c8STreehugger Robot 10*7c3d14c8STreehugger RobotCONST_SECTION 11*7c3d14c8STreehugger Robot 12*7c3d14c8STreehugger Robot .balign 16 13*7c3d14c8STreehugger Robottwop52: 14*7c3d14c8STreehugger Robot .quad 0x4330000000000000 15*7c3d14c8STreehugger Robot 16*7c3d14c8STreehugger Robot .balign 16 17*7c3d14c8STreehugger Robottwop84_plus_twop52_neg: 18*7c3d14c8STreehugger Robot .quad 0xc530000000100000 19*7c3d14c8STreehugger Robot 20*7c3d14c8STreehugger Robot .balign 16 21*7c3d14c8STreehugger Robottwop84: 22*7c3d14c8STreehugger Robot .quad 0x4530000000000000 23*7c3d14c8STreehugger Robot 24*7c3d14c8STreehugger Robot#define REL_ADDR(_a) (_a)-0b(%eax) 25*7c3d14c8STreehugger Robot 26*7c3d14c8STreehugger Robot.text 27*7c3d14c8STreehugger Robot.balign 4 28*7c3d14c8STreehugger RobotDEFINE_COMPILERRT_FUNCTION(__floatundixf) 29*7c3d14c8STreehugger Robot calll 0f 30*7c3d14c8STreehugger Robot0: popl %eax 31*7c3d14c8STreehugger Robot movss 8(%esp), %xmm0 // hi 32 bits of input 32*7c3d14c8STreehugger Robot movss 4(%esp), %xmm1 // lo 32 bits of input 33*7c3d14c8STreehugger Robot orpd REL_ADDR(twop84), %xmm0 // 2^84 + hi (as a double) 34*7c3d14c8STreehugger Robot orpd REL_ADDR(twop52), %xmm1 // 2^52 + lo (as a double) 35*7c3d14c8STreehugger Robot addsd REL_ADDR(twop84_plus_twop52_neg), %xmm0 // hi - 2^52 (no rounding occurs) 36*7c3d14c8STreehugger Robot movsd %xmm1, 4(%esp) 37*7c3d14c8STreehugger Robot fldl 4(%esp) 38*7c3d14c8STreehugger Robot movsd %xmm0, 4(%esp) 39*7c3d14c8STreehugger Robot faddl 4(%esp) 40*7c3d14c8STreehugger Robot ret 41*7c3d14c8STreehugger RobotEND_COMPILERRT_FUNCTION(__floatundixf) 42*7c3d14c8STreehugger Robot 43*7c3d14c8STreehugger Robot#endif // __i386__ 44*7c3d14c8STreehugger Robot 45*7c3d14c8STreehugger RobotNO_EXEC_STACK_DIRECTIVE 46*7c3d14c8STreehugger Robot 47