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Diffstat (limited to 'lib/arm/unordsf2vfp.S')
| -rw-r--r-- | lib/arm/unordsf2vfp.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/arm/unordsf2vfp.S b/lib/arm/unordsf2vfp.S new file mode 100644 index 000000000000..ab291a858dab --- /dev/null +++ b/lib/arm/unordsf2vfp.S @@ -0,0 +1,28 @@ +//===-- unordsf2vfp.S - Implement unordsf2vfp -----------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "../assembly.h" + +// +// extern int __unordsf2vfp(float a, float b); +// +// Returns one iff a or b is NaN +// Uses Darwin calling convention where single precision arguments are passsed +// like 32-bit ints +// + .align 2 +DEFINE_COMPILERRT_FUNCTION(__unordsf2vfp) + fmsr s14, r0 // move from GPR 0 to float register + fmsr s15, r1 // move from GPR 1 to float register + fcmps s14, s15 + fmstat + movvs r0, #1 // set result register to 1 if "overflow" (any NaNs) + movvc r0, #0 + bx lr + |