Commit 16017c48 authored by Peter Maydell's avatar Peter Maydell
Browse files

softfloat: Clarify license status 



The code in the softfloat source files is under a mixture of
licenses: the original code and many changes from QEMU contributors
are under the base SoftFloat-2a license; changes from Stefan Weil
and RedHat employees are GPLv2-or-later; changes from Fabrice Bellard
are under the BSD license. Clarify this in the comments at the
top of each affected source file, including a statement about
the assumed licensing for future contributions, so we don't need
to remember to ask patch submitters explicitly to pick a license.

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Acked-by: default avatarAndreas Färber <afaerber@suse.de>
Acked-by: default avatarAurelien Jarno <aurelien@aurel32.net>
Acked-by: default avatarAvi Kivity <avi.kivity@gmail.com>
Acked-by: default avatarBen Taylor <bentaylor.solx86@gmail.com>
Acked-by: default avatarBlue Swirl <blauwirbel@gmail.com>
Acked-by: default avatarChristophe Lyon <christophe.lyon@st.com>
Acked-by: default avatarFabrice Bellard <fabrice@bellard.org>
Acked-by: default avatarGuan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: default avatarJuan Quintela <quintela@redhat.com>
Acked-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
Acked-by: default avatarPaul Brook <paul@codesourcery.com>
Acked-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Acked-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Acked-by: default avatarRichard Henderson <rth@twiddle.net>
Acked-by: default avatarRichard Sandiford <rdsandiford@googlemail.com>
Acked-by: default avatarStefan Weil <sw@weilnetz.de>
Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1421073508-23909-5-git-send-email-peter.maydell@linaro.org
parent 332d5849

fpu/softfloat-macros.h

+47 −1
Original line number Diff line number Diff line 
/*

 * QEMU float support macros

 *

 * Derived from SoftFloat.

 * The code in this source file is derived from release 2a of the SoftFloat

 * IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and

 * some later contributions) are provided under that license, as detailed below.

 * It has subsequently been modified by contributors to the QEMU Project,

 * so some portions are provided under:

 *  the SoftFloat-2a license

 *  the BSD license

 *  GPL-v2-or-later

 *

 * Any future contributions to this file after December 1st 2014 will be

 * taken to be licensed under the Softfloat-2a license unless specifically

 * indicated otherwise.

 */



/*
@@ -33,6 +44,41 @@ this code that are retained. 
===============================================================================

*/



/* BSD licensing:

 * Copyright (c) 2006, Fabrice Bellard

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 * this list of conditions and the following disclaimer in the documentation

 * and/or other materials provided with the distribution.

 *

 * 3. Neither the name of the copyright holder nor the names of its contributors

 * may be used to endorse or promote products derived from this software without

 * specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */



/* Portions of this work are licensed under the terms of the GNU GPL,

 * version 2 or later. See the COPYING file in the top-level directory.

 */



/*----------------------------------------------------------------------------

| This macro tests for minimum version of the GNU C compiler.

*----------------------------------------------------------------------------*/

fpu/softfloat-specialize.h

+47 −1
Original line number Diff line number Diff line 
/*

 * QEMU float support

 *

 * Derived from SoftFloat.

 * The code in this source file is derived from release 2a of the SoftFloat

 * IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and

 * some later contributions) are provided under that license, as detailed below.

 * It has subsequently been modified by contributors to the QEMU Project,

 * so some portions are provided under:

 *  the SoftFloat-2a license

 *  the BSD license

 *  GPL-v2-or-later

 *

 * Any future contributions to this file after December 1st 2014 will be

 * taken to be licensed under the Softfloat-2a license unless specifically

 * indicated otherwise.

 */



/*
@@ -33,6 +44,41 @@ this code that are retained. 
===============================================================================

*/



/* BSD licensing:

 * Copyright (c) 2006, Fabrice Bellard

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 * this list of conditions and the following disclaimer in the documentation

 * and/or other materials provided with the distribution.

 *

 * 3. Neither the name of the copyright holder nor the names of its contributors

 * may be used to endorse or promote products derived from this software without

 * specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */



/* Portions of this work are licensed under the terms of the GNU GPL,

 * version 2 or later. See the COPYING file in the top-level directory.

 */



/* Does the target distinguish signaling NaNs from non-signaling NaNs

 * by setting the most significant bit of the mantissa for a signaling NaN?

 * (The more common choice is to have it be zero for SNaN and one for QNaN.)

fpu/softfloat.c

+47 −1
Original line number Diff line number Diff line 
/*

 * QEMU float support

 *

 * Derived from SoftFloat.

 * The code in this source file is derived from release 2a of the SoftFloat

 * IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and

 * some later contributions) are provided under that license, as detailed below.

 * It has subsequently been modified by contributors to the QEMU Project,

 * so some portions are provided under:

 *  the SoftFloat-2a license

 *  the BSD license

 *  GPL-v2-or-later

 *

 * Any future contributions to this file after December 1st 2014 will be

 * taken to be licensed under the Softfloat-2a license unless specifically

 * indicated otherwise.

 */



/*
@@ -33,6 +44,41 @@ this code that are retained. 
===============================================================================

*/



/* BSD licensing:

 * Copyright (c) 2006, Fabrice Bellard

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 * this list of conditions and the following disclaimer in the documentation

 * and/or other materials provided with the distribution.

 *

 * 3. Neither the name of the copyright holder nor the names of its contributors

 * may be used to endorse or promote products derived from this software without

 * specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */



/* Portions of this work are licensed under the terms of the GNU GPL,

 * version 2 or later. See the COPYING file in the top-level directory.

 */



/* softfloat (and in particular the code in softfloat-specialize.h) is

 * target-dependent and needs the TARGET_* macros.

 */

include/fpu/softfloat.h

+47 −1
Original line number Diff line number Diff line 
/*

 * QEMU float support

 *

 * Derived from SoftFloat.

 * The code in this source file is derived from release 2a of the SoftFloat

 * IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and

 * some later contributions) are provided under that license, as detailed below.

 * It has subsequently been modified by contributors to the QEMU Project,

 * so some portions are provided under:

 *  the SoftFloat-2a license

 *  the BSD license

 *  GPL-v2-or-later

 *

 * Any future contributions to this file after December 1st 2014 will be

 * taken to be licensed under the Softfloat-2a license unless specifically

 * indicated otherwise.

 */



/*
@@ -33,6 +44,41 @@ this code that are retained. 
===============================================================================

*/



/* BSD licensing:

 * Copyright (c) 2006, Fabrice Bellard

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 * this list of conditions and the following disclaimer in the documentation

 * and/or other materials provided with the distribution.

 *

 * 3. Neither the name of the copyright holder nor the names of its contributors

 * may be used to endorse or promote products derived from this software without

 * specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */



/* Portions of this work are licensed under the terms of the GNU GPL,

 * version 2 or later. See the COPYING file in the top-level directory.

 */



#ifndef SOFTFLOAT_H

#define SOFTFLOAT_H