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//===-- subdf3vfp.S - Implement subdf3vfp ---------------------------------===//
//
// 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"
//
// extern double __subdf3vfp(double a, double b);
//
// Returns difference between two double precision floating point numbers using
// the Darwin calling convention where double arguments are passsed in GPR pairs
//
.align 2
DEFINE_COMPILERRT_FUNCTION(__subdf3vfp)
fmdrr d6, r0, r1 // move first param from r0/r1 pair into d6
fmdrr d7, r2, r3 // move second param from r2/r3 pair into d7
fsubd d6, d6, d7
fmrrd r0, r1, d6 // move result back to r0/r1 pair
bx lr
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