diff options
Diffstat (limited to 'compiler-rt/lib/arm/subdf3vfp.S')
| -rw-r--r-- | compiler-rt/lib/arm/subdf3vfp.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/compiler-rt/lib/arm/subdf3vfp.S b/compiler-rt/lib/arm/subdf3vfp.S new file mode 100644 index 00000000000..c138c3a2ea1 --- /dev/null +++ b/compiler-rt/lib/arm/subdf3vfp.S @@ -0,0 +1,23 @@ +//===-- subdf3vfp.S - Implement subdf3vfp ---------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + + +// +// 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 +// + .globl ___subdf3vfp +___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 |
