1 //===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "../assembly.h"
13 // extern double __negdf2vfp(double a, double b);
15 // Returns the negation a double precision floating point numbers using the
16 // Darwin calling convention where double arguments are passsed in GPR pairs.
20 DEFINE_COMPILERRT_FUNCTION(__negdf2vfp)
21 eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair