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//===-- unorddf2vfp.S - Implement unorddf2vfp ------------------------------===//
//
// 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 int __unorddf2vfp(double a, double b);
//
// Returns one iff a or b is NaN
// Uses Darwin calling convention where double precision arguments are passsed
// like in GPR pairs.
//
.syntax unified
.p2align 2
DEFINE_COMPILERRT_FUNCTION(__unorddf2vfp)
vmov d6, r0, r1 // load r0/r1 pair in double register
vmov d7, r2, r3 // load r2/r3 pair in double register
vcmp.f64 d6, d7
vmrs apsr_nzcv, fpscr
movvs r0, #1 // set result register to 1 if "overflow" (any NaNs)
movvc r0, #0
bx lr
END_COMPILERRT_FUNCTION(__unorddf2vfp)
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