xref: /freebsd/contrib/llvm-project/compiler-rt/lib/builtins/arm/mulsf3vfp.S (revision dd41de95a84d979615a2ef11df6850622bf6184e)
1//===-- mulsf3vfp.S - Implement mulsf3vfp ---------------------------------===//
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 __mulsf3vfp(float a, float b);
13//
14// Multiplies two single precision floating point numbers using the Darwin
15// calling convention where single arguments are passsed like 32-bit ints.
16//
17	.syntax unified
18	.p2align 2
19DEFINE_COMPILERRT_FUNCTION(__mulsf3vfp)
20#if defined(COMPILER_RT_ARMHF_TARGET)
21	vmul.f32 s0, s0, s1
22#else
23	vmov	s14, r0		// move first param from r0 into float register
24	vmov	s15, r1		// move second param from r1 into float register
25	vmul.f32 s13, s14, s15
26#endif
27	vmov	r0, s13		// move result back to r0
28	bx	lr
29END_COMPILERRT_FUNCTION(__mulsf3vfp)
30
31NO_EXEC_STACK_DIRECTIVE
32
33