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      1 //===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. 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 	.syntax unified
     19 	.p2align 2
     20 DEFINE_COMPILERRT_FUNCTION(__negdf2vfp)
     21 	eor	r1, r1, #-2147483648	// flip sign bit on double in r0/r1 pair
     22 	bx	lr
     23 END_COMPILERRT_FUNCTION(__negdf2vfp)
     24