diff options
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/arm/subdf3vfp.S')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/arm/subdf3vfp.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/arm/subdf3vfp.S b/contrib/compiler-rt/lib/builtins/arm/subdf3vfp.S new file mode 100644 index 000000000000..2b6f2bdbfdd5 --- /dev/null +++ b/contrib/compiler-rt/lib/builtins/arm/subdf3vfp.S @@ -0,0 +1,33 @@ +//===-- subdf3vfp.S - Implement subdf3vfp ---------------------------------===// +// +// 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 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 +// + .syntax unified + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__subdf3vfp) +#if defined(COMPILER_RT_ARMHF_TARGET) + vsub.f64 d0, d0, d1 +#else + vmov d6, r0, r1 // move first param from r0/r1 pair into d6 + vmov d7, r2, r3 // move second param from r2/r3 pair into d7 + vsub.f64 d6, d6, d7 + vmov r0, r1, d6 // move result back to r0/r1 pair +#endif + bx lr +END_COMPILERRT_FUNCTION(__subdf3vfp) + +NO_EXEC_STACK_DIRECTIVE + |