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

24 lines
800 B
ArmAsm

//===-- floatsisfvfp.S - Implement floatsisfvfp ---------------------------===//
//
// 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 __floatsisfvfp(int a);
//
// Converts single precision float to a 32-bit int rounding towards zero.
// Uses Darwin calling convention where a single precision result is
// return in a GPR..
//
DEFINE_COMPILERRT_FUNCTION(__floatsisfvfp)
fmsr s15, r0 // move int to float register s15
fsitos s15, s15 // convert 32-bit int in s15 to float in s15
fmrs r0, s15 // move s15 to result register
bx lr