1*7c3d14c8STreehugger Robot//===-- gtdf2vfp.S - Implement gtdf2vfp -----------------------------------===// 2*7c3d14c8STreehugger Robot// 3*7c3d14c8STreehugger Robot// The LLVM Compiler Infrastructure 4*7c3d14c8STreehugger Robot// 5*7c3d14c8STreehugger Robot// This file is dual licensed under the MIT and the University of Illinois Open 6*7c3d14c8STreehugger Robot// Source Licenses. See LICENSE.TXT for details. 7*7c3d14c8STreehugger Robot// 8*7c3d14c8STreehugger Robot//===----------------------------------------------------------------------===// 9*7c3d14c8STreehugger Robot 10*7c3d14c8STreehugger Robot#include "../assembly.h" 11*7c3d14c8STreehugger Robot 12*7c3d14c8STreehugger Robot// 13*7c3d14c8STreehugger Robot// extern double __gtdf2vfp(double a, double b); 14*7c3d14c8STreehugger Robot// 15*7c3d14c8STreehugger Robot// Returns one iff a > b and neither is NaN. 16*7c3d14c8STreehugger Robot// Uses Darwin calling convention where double precision arguments are passsed 17*7c3d14c8STreehugger Robot// like in GPR pairs. 18*7c3d14c8STreehugger Robot// 19*7c3d14c8STreehugger Robot .syntax unified 20*7c3d14c8STreehugger Robot .p2align 2 21*7c3d14c8STreehugger RobotDEFINE_COMPILERRT_FUNCTION(__gtdf2vfp) 22*7c3d14c8STreehugger Robot vmov d6, r0, r1 // load r0/r1 pair in double register 23*7c3d14c8STreehugger Robot vmov d7, r2, r3 // load r2/r3 pair in double register 24*7c3d14c8STreehugger Robot vcmp.f64 d6, d7 25*7c3d14c8STreehugger Robot vmrs apsr_nzcv, fpscr 26*7c3d14c8STreehugger Robot movgt r0, #1 // set result register to 1 if equal 27*7c3d14c8STreehugger Robot movle r0, #0 28*7c3d14c8STreehugger Robot bx lr 29*7c3d14c8STreehugger RobotEND_COMPILERRT_FUNCTION(__gtdf2vfp) 30*7c3d14c8STreehugger Robot 31*7c3d14c8STreehugger RobotNO_EXEC_STACK_DIRECTIVE 32*7c3d14c8STreehugger Robot 33