1//===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "../assembly.h" 11 12// 13// extern float __subsf3vfp(float a, float b); 14// 15// Returns the difference between two single precision floating point numbers 16// using the Darwin calling convention where single arguments are passsed 17// like 32-bit ints. 18// 19DEFINE_COMPILERRT_FUNCTION(__subsf3vfp) 20 fmsr s14, r0 // move first param from r0 into float register 21 fmsr s15, r1 // move second param from r1 into float register 22 fsubs s14, s14, s15 23 fmrs r0, s14 // move result back to r0 24 bx lr 25