diff options
Diffstat (limited to 'lib/arm/subsf3vfp.S')
| -rw-r--r-- | lib/arm/subsf3vfp.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/arm/subsf3vfp.S b/lib/arm/subsf3vfp.S new file mode 100644 index 000000000000..4ead9c23e712 --- /dev/null +++ b/lib/arm/subsf3vfp.S @@ -0,0 +1,25 @@ +//===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===// +// +// 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 float __subsf3vfp(float a, float b); +// +// Returns the difference between two single precision floating point numbers +// using the Darwin calling convention where single arguments are passsed +// like 32-bit ints. +// + .align 2 +DEFINE_COMPILERRT_FUNCTION(__subsf3vfp) + fmsr s14, r0 // move first param from r0 into float register + fmsr s15, r1 // move second param from r1 into float register + fsubs s14, s14, s15 + fmrs r0, s14 // move result back to r0 + bx lr |