1 //===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===// 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 double __negdf2vfp(double a, double b); 14 // 15 // Returns the negation a double precision floating point numbers using the 16 // Darwin calling convention where double arguments are passsed in GPR pairs. 17 // 18 DEFINE_COMPILERRT_FUNCTION(__negdf2vfp) 19 eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair 20 bx lr 21
