1//===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8
9#include "../assembly.h"
10
11//
12// extern float __subsf3vfp(float a, float b);
13//
14// Returns the difference between two single precision floating point numbers
15// using the Darwin calling convention where single arguments are passsed
16// like 32-bit ints.
17//
18	.syntax unified
19	.p2align 2
20DEFINE_COMPILERRT_FUNCTION(__subsf3vfp)
21#if defined(COMPILER_RT_ARMHF_TARGET)
22	vsub.f32 s0, s0, s1
23#else
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
28#endif
29	bx	lr
30END_COMPILERRT_FUNCTION(__subsf3vfp)
31
32NO_EXEC_STACK_DIRECTIVE
33
34