177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao//===-- ltdf2vfp.S - Implement ltdf2vfp -----------------------------------===// 277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// 377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// The LLVM Compiler Infrastructure 477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// 577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// This file is distributed under the University of Illinois Open Source 677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// License. See LICENSE.TXT for details. 777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// 877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao//===----------------------------------------------------------------------===// 977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 1077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao#include "../assembly.h" 1177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao 1277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// 1377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// extern double __ltdf2vfp(double a, double b); 1477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// 1577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Returns one iff a < b and neither is NaN. 1677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// Uses Darwin calling convention where double precision arguments are passsed 1777ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// like in GPR pairs. 1877ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao// 1977ed6142daed1e068fbda64405d0de9845e40e1Shih-wei LiaoDEFINE_COMPILERRT_FUNCTION(__ltdf2vfp) 2077ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao fmdrr d6, r0, r1 // load r0/r1 pair in double register 2177ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao fmdrr d7, r2, r3 // load r2/r3 pair in double register 2277ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao fcmpd d6, d7 2377ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao fmstat 2477ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao movmi r0, #1 // set result register to 1 if equal 2577ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao movpl r0, #0 2677ed6142daed1e068fbda64405d0de9845e40e1Shih-wei Liao bx lr 27