llvm-project/compiler-rt/lib/arm/mulsf3vfp.S

25 lines
820 B
ArmAsm

//===-- mulsf3vfp.S - Implement mulsf3vfp ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern float __mulsf3vfp(float a, float b);
//
// Multiplies two single precision floating point numbers using the Darwin
// calling convention where single arguments are passsed like 32-bit ints.
//
.align 2
DEFINE_COMPILERRT_FUNCTION(__mulsf3vfp)
fmsr s14, r0 // move first param from r0 into float register
fmsr s15, r1 // move second param from r1 into float register
fmuls s13, s14, s15
fmrs r0, s13 // move result back to r0
bx lr