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// double __floatundidf(du_int a); 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 Robottwop32: 18*7c3d14c8STreehugger Robot .quad 0x41f0000000000000 19*7c3d14c8STreehugger Robot 20*7c3d14c8STreehugger Robot#define REL_ADDR(_a) (_a)-0b(%eax) 21*7c3d14c8STreehugger Robot 22*7c3d14c8STreehugger Robot.text 23*7c3d14c8STreehugger Robot.balign 4 24*7c3d14c8STreehugger RobotDEFINE_COMPILERRT_FUNCTION(__floatdidf) 25*7c3d14c8STreehugger Robot cvtsi2sd 8(%esp), %xmm1 26*7c3d14c8STreehugger Robot movss 4(%esp), %xmm0 // low 32 bits of a 27*7c3d14c8STreehugger Robot calll 0f 28*7c3d14c8STreehugger Robot0: popl %eax 29*7c3d14c8STreehugger Robot mulsd REL_ADDR(twop32), %xmm1 // a_hi as a double (without rounding) 30*7c3d14c8STreehugger Robot movsd REL_ADDR(twop52), %xmm2 // 0x1.0p52 31*7c3d14c8STreehugger Robot subsd %xmm2, %xmm1 // a_hi - 0x1p52 (no rounding occurs) 32*7c3d14c8STreehugger Robot orpd %xmm2, %xmm0 // 0x1p52 + a_lo (no rounding occurs) 33*7c3d14c8STreehugger Robot addsd %xmm1, %xmm0 // a_hi + a_lo (round happens here) 34*7c3d14c8STreehugger Robot movsd %xmm0, 4(%esp) 35*7c3d14c8STreehugger Robot fldl 4(%esp) 36*7c3d14c8STreehugger Robot ret 37*7c3d14c8STreehugger RobotEND_COMPILERRT_FUNCTION(__floatdidf) 38*7c3d14c8STreehugger Robot 39*7c3d14c8STreehugger Robot#endif // __i386__ 40*7c3d14c8STreehugger Robot 41*7c3d14c8STreehugger RobotNO_EXEC_STACK_DIRECTIVE 42*7c3d14c8STreehugger Robot 43