ltdf2vfp.S revision e80e978d6aa211056beddf4582390e374d1935ab
1e80e978d6aa211056beddf4582390e374d1935abNick Kledzik//===-- ltdf2vfp.S - Implement ltdf2vfp -----------------------------------===// 2e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// 3e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// The LLVM Compiler Infrastructure 4e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// 5e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// This file is distributed under the University of Illinois Open Source 6e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// License. See LICENSE.TXT for details. 7e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// 8e80e978d6aa211056beddf4582390e374d1935abNick Kledzik//===----------------------------------------------------------------------===// 9e80e978d6aa211056beddf4582390e374d1935abNick Kledzik 10e80e978d6aa211056beddf4582390e374d1935abNick Kledzik 11e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// 12e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// extern double __ltdf2vfp(double a, double b); 13e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// 14e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// Returns one iff a < b and neither is NaN. 15e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// Uses Darwin calling convention where double precision arguments are passsed 16e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// like in GPR pairs. 17e80e978d6aa211056beddf4582390e374d1935abNick Kledzik// 18e80e978d6aa211056beddf4582390e374d1935abNick Kledzik .globl ___ltdf2vfp 19e80e978d6aa211056beddf4582390e374d1935abNick Kledzik___ltdf2vfp: 20e80e978d6aa211056beddf4582390e374d1935abNick Kledzik fmdrr d6, r0, r1 // load r0/r1 pair in double register 21e80e978d6aa211056beddf4582390e374d1935abNick Kledzik fmdrr d7, r2, r3 // load r2/r3 pair in double register 22e80e978d6aa211056beddf4582390e374d1935abNick Kledzik fcmpd d6, d7 23e80e978d6aa211056beddf4582390e374d1935abNick Kledzik fmstat 24e80e978d6aa211056beddf4582390e374d1935abNick Kledzik movmi r0, #1 // set result register to 1 if equal 25e80e978d6aa211056beddf4582390e374d1935abNick Kledzik movpl r0, #0 26e80e978d6aa211056beddf4582390e374d1935abNick Kledzik bx lr 27