diff options
Diffstat (limited to 'contrib/compiler-rt/lib/arm/truncdfsf2vfp.S')
| -rw-r--r-- | contrib/compiler-rt/lib/arm/truncdfsf2vfp.S | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/arm/truncdfsf2vfp.S b/contrib/compiler-rt/lib/arm/truncdfsf2vfp.S new file mode 100644 index 0000000..5725e25 --- /dev/null +++ b/contrib/compiler-rt/lib/arm/truncdfsf2vfp.S @@ -0,0 +1,24 @@ +//===-- truncdfsf2vfp.S - Implement truncdfsf2vfp -------------------------===// +// +// 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 __truncdfsf2vfp(double a); +// +// Converts double precision float to signle precision result. +// Uses Darwin calling convention where a double precision parameter is +// passed in a R0/R1 pair and a signle precision result is returned in R0. +// + .align 2 +DEFINE_COMPILERRT_FUNCTION(__truncdfsf2vfp) + fmdrr d7, r0, r1 // load double from r0/r1 pair + fcvtsd s15, d7 // convert double to single (trucate precision) + fmrs r0, s15 // return result in r0 + bx lr |
