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 // 19 DEFINE_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
