1 //===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "../assembly.h"
12 // extern float __subsf3vfp(float a, float b);
14 // Returns the difference between two single precision floating point numbers
15 // using the Darwin calling convention where single arguments are passsed
20 DEFINE_COMPILERRT_FUNCTION(__subsf3vfp)
21 #if defined(COMPILER_RT_ARMHF_TARGET)
24 vmov s14, r0 // move first param from r0 into float register
25 vmov s15, r1 // move second param from r1 into float register
26 vsub.f32 s14, s14, s15
27 vmov r0, s14 // move result back to r0
30 END_COMPILERRT_FUNCTION(__subsf3vfp)
32 NO_EXEC_STACK_DIRECTIVE