diff options
Diffstat (limited to 'contrib/llvm-project/compiler-rt/lib/builtins/arm/subsf3vfp.S')
| -rw-r--r-- | contrib/llvm-project/compiler-rt/lib/builtins/arm/subsf3vfp.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/arm/subsf3vfp.S b/contrib/llvm-project/compiler-rt/lib/builtins/arm/subsf3vfp.S new file mode 100644 index 000000000000..80e69f2e8e88 --- /dev/null +++ b/contrib/llvm-project/compiler-rt/lib/builtins/arm/subsf3vfp.S @@ -0,0 +1,33 @@ +//===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#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. +// + .syntax unified + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__subsf3vfp) +#if defined(COMPILER_RT_ARMHF_TARGET) + vsub.f32 s0, s0, s1 +#else + vmov s14, r0 // move first param from r0 into float register + vmov s15, r1 // move second param from r1 into float register + vsub.f32 s14, s14, s15 + vmov r0, s14 // move result back to r0 +#endif + bx lr +END_COMPILERRT_FUNCTION(__subsf3vfp) + +NO_EXEC_STACK_DIRECTIVE + |