//===-- adddf3vfp.S - Implement adddf3vfp ---------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "../assembly.h"

//
// double __adddf3vfp(double a, double b) { return a + b; }
//
// Adds two double precision floating point numbers using the Darwin
// calling convention where double arguments are passsed in GPR pairs
//
	.syntax unified
	.p2align 2
DEFINE_COMPILERRT_FUNCTION(__adddf3vfp)
#if defined(COMPILER_RT_ARMHF_TARGET)
	vadd.f64 d0, d0, d1
#else
	vmov	d6, r0, r1		// move first param from r0/r1 pair into d6
	vmov	d7, r2, r3		// move second param from r2/r3 pair into d7
	vadd.f64 d6, d6, d7		
	vmov	r0, r1, d6		// move result back to r0/r1 pair
#endif
	bx	lr
END_COMPILERRT_FUNCTION(__adddf3vfp)

NO_EXEC_STACK_DIRECTIVE