/*++

Copyright (c) 2015 Minoca Corp.

    This file is licensed under the terms of the GNU General Public License
    version 3. Alternative licensing terms are available. Contact
    info@minocacorp.com for details. See the LICENSE file at the root of this
    project for complete licensing information.

Module Name:

    fenva.S

Abstract:

    This module implements assembly support functionality for ARM floating
    point (VFP).

Author:

    Evan Green 11-Nov-2015

Environment:

    User Mode C Library

--*/

//
// ------------------------------------------------------------------- Includes
//

#include <minoca/kernel/arm.inc>

//
// ---------------------------------------------------------------- Definitions
//

//
// ----------------------------------------------------------------------- Code
//

ASSEMBLY_FILE_HEADER
.fpu vfpv3

//
// unsigned int
// ClpGetFpscr (
//     void
//     )
//

/*++

Routine Description:

    This routine returns the VFP floating point status and control register
    (FPSCR).

Arguments:

    None.

Return Value:

    Returns the FPSCR.

--*/

FUNCTION ClpGetFpscr
    vmrs    %r0, FPSCR
    bx      %lr

END_FUNCTION ClpGetFpscr

//
// void
// ClpSetFpscr (
//     unsigned int Value
//     )
//

/*++

Routine Description:

    This routine sets the VFP floating point status and control register
    (FPSCR).

Arguments:

    Value - Supplies the new value to set.

Return Value:

    None.

--*/

FUNCTION ClpSetFpscr
    vmsr    FPSCR, %r0
    bx      %lr

END_FUNCTION ClpSetFpscr