freebsd-dev/contrib/compiler-rt/lib/arm/floatsisfvfp.S
Ed Schouten 7686ff743c Upgrade libcompiler_rt to upstream revision 147390.
This version of libcompiler_rt adds support for __mulo[sdt]i4(), which
computes a multiply and its overflow flag. There are also a lot of
cleanup fixes to headers that don't really affect us.

Updating to this revision should make it a bit easier to contribute
changes back to the LLVM developers.
2011-12-31 19:01:48 +00:00

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ArmAsm

//===-- floatsisfvfp.S - Implement floatsisfvfp ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. 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..
//
.syntax unified
.align 2
DEFINE_COMPILERRT_FUNCTION(__floatsisfvfp)
vmov s15, r0 // move int to float register s15
vcvt.f32.s32 s15, s15 // convert 32-bit int in s15 to float in s15
vmov r0, s15 // move s15 to result register
bx lr