User Guide: DSim Legalese: Licenses and Attributions
DSim uses several open-source packages whose licenses may impose requirements on DSim itself. It also makes use of some libries provided as packages by the operating system.
Operating System Provided Packages
The following packaged are needed by DSim and are provided by the operating system:
- ca-certificates
- binutils - required to provide the system linker
ldfor DSim to link the final image - libedit2
- sqlite3
Open-source Packages
The opensource packages are:
LLVM
LLVM is a general-purpose compiler backend optimization and code generation framework. DSim uses it to generate native x86_64 code.
LLVM is licensed under the University of Illinois/NCSA Open Source License which requires that the following be reproduced in the documentation:
University of Illinois/NCSA Open Source License Copyright © 2003-2015 University of Illinois at Urbana-Champaign. All rights reserved. Developed by: LLVM Team University of Illinois at Urbana-Champaign http://llvm.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal with the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimers. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimers in the documentation and/or other materials provided with the distribution. * Neither the names of the LLVM Team, University of Illinois at Urbana-Champaign, nor the names of its contributors may be used to endorse or promote products derived from this Software without specific prior written permission. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
However, LLVM is in the process of changing its license terms to be those of the Apache 2 license. Clause 4a) of this license requires that anyone who redistributes the software must provide users with a copy of the license, to wit:
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
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Work (including but not limited to damages for loss of goodwill,
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APPENDIX: How to apply the Apache License to your work.
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Boehm-GC
The Boehm-Demers-Weiser garbage collector is a conservative mark-and-sweep collector that is currently used for runtime garbage collection. It is released under the following license terms:
Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers Copyright © 1991-1995 by Xerox Corporation. All rights reserved. Copyright 1996-1999 by Silicon Graphics. All rights reserved. Copyright 1999 by Hewlett-Packard Company. All rights reserved. Copyright © 2007 Free Software Foundation, Inc Copyright © 2000-2011 by Hewlett-Packard Development Company. THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED OR IMPLIED. ANY USE IS AT YOUR OWN RISK. Permission is hereby granted to use or copy this program for any purpose, provided the above notices are retained on all copies. Permission to modify the code and to distribute modified code is granted, provided the above notices are retained, and a notice that the code was modified is included with the above copyright notice.
Colorado University Decision Diagrams (CUDD)
The Colorado University Decision Diagram (CUDD) package is used to build and traverse reduced-order binary decision diagrams as a solving strategy in the constraint solver. Its license requires that the following text be reproduced in the documentation:
Copyright © 1995-2004, Regents of the University of Colorado All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 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. Neither the name of the University of Colorado 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 OWNER 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.
libunwind
An independent implementation of `libunwind`, a utility that traverses call stacks
is used to generate backtraces upon receipt of a fatal signal or invocation of
$stacktrace. Its license requires that the following text be reproduced in the documentation:
Copyright © 2003 Hewlett-Packard Co Contributed by David Mosberger-Tang <davidm@hpl.hp.com> This file is part of libunwind. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Minisat
Minisat is a small SAT solver, which is used as one of the solvers in the constraint solver. It is released under the "MIT license", their version of which reads as follows:
MiniSat -- Copyright © 2003-2006, Niklas Een, Niklas Sorensson Copyright © 2007-2010 Niklas Sorensson Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Minijson
Minijson is a small C++ JSON reader/writer package. It is released under the following license:
Copyright (c) 2015, Giacomo Drago <giacomo@giacomodrago.com> 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 Giacomo Drago 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 GIACOMO DRAGO "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 GIACOMO DRAGO 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.
libatomic_ops
This package provides semi-portable access to hardware-provided atomic memory update operations on a number of architectures.
A few library routines are covered by the GNU General Public License. These are put into a separate library, libatomic_ops_gpl.a and DSim does not include or distribute these.
The low-level part of the library used by DSim is mostly covered by the following license:
Copyright (c) ... Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
A few files in the sysdeps directory were inherited in part from the Boehm-Demers-Weiser conservative garbage collector, and are covered by its license, which is similar in spirit:
Copyright (c) ... THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED OR IMPLIED. ANY USE IS AT YOUR OWN RISK. Permission is hereby granted to use or copy this program for any purpose, provided the above notices are retained on all copies. Permission to modify the code and to distribute modified code is granted, provided the above notices are retained, and a notice that the code was modified is included with the above copyright notice.
OpenSSl
The OpenSSL toolkit, version 3.0 or later, is a cryptography and SSL/TSL toolkit. It is released under the following license:
Apache License
Version 2.0, January 2004
https://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
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"You" (or "Your") shall mean an individual or Legal Entity
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"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
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of this License, Derivative Works shall not include works that remain
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"Contribution" shall mean any work of authorship, including
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the copyright owner. For the purposes of this definition, "submitted"
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(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
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(d) If the Work includes a "NOTICE" text file as part of its
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of the following places: within a NOTICE text file distributed
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that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
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any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
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incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
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9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
SQLite
SQLite is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. The code for SQLite is in the public domain and is thus free for use for any purpose, commercial or private.
SQLite Is Public Domain
All of the code and documentation in SQLite has been dedicated to the public domain by the authors. All code authors, and representatives of the companies they work for, have signed affidavits dedicating their contributions to the public domain and originals of those signed affidavits are stored in a firesafe at the main offices of Hwaci. All contributors are citizens of countries that allow creative works to be dedicated into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute the original SQLite code, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.
Reference: SQLite licence information
MSYS2 Executables (exe/dll) redistributed with DSim on Windows
Several executables are re-distributed with the Windows version of DSim and were obtained from MSYS2. Each individual file's license is covered in the following table.
MSYS2 is not re-distributed as a whole. The license information for MSYS2 itself is reproduced below and available at this website: MSYS license
License MSYS2 is a software distribution consisting of several independent parts, each with their own licenses, comparable to a Linux distribution. The installer, for example, is based on the qt-installer-framework and pre-packs the direct and indirect dependencies of the base meta package. Each package has its own licenses. The "pacman" package manager in MSYS2 allows users to install other packages available in our repository, each with their own licenses. The license information for each package as visible on https://packages.msys2.org is maintained on a best effort basis and we make no guarantee that it is accurate or complete.
The following table lists the files that are redistributed from the noted packages, none of the re-distributed files have been modified in any way. Additional license information organized by package can be found in the DSim installation package in install/mingw/licenses/<package>/* files. The mingw-w64-x86_64-libunwind package is the exception, further license information can be found in the section below the table.
| Re-distributed files | Package | Licenses |
|---|---|---|
| ld.exe | mingw-w64-x86_64-binutils | spdx: GPL-3.0-or-later AND GPL-2.0-or-later AND LGPL-3.0-or-later AND LGPL-2.0-or-later |
| libdl.dll | mingw-w64-x86_64-dlfcn | spdx: MIT |
| libgcc_s_seh-1.dll libstdc++-6.dll | mingw-w64-x86_64-gcc-libs | spdx: GPL-3.0-or-later WITH GCC-exception-3.1 AND LGPL-2.1-or-later |
| libiconv-2.dll | mingw-w64-x86_64-libiconv | spdx: LGPL-2.1-or-later |
| libintl-8.dll | mingw-w64-x86_64-gettext | spdx: GPL-3.0-or-later AND LGPL-2.1-or-later |
| libsqlite3-0.dll | mingw-w64-x86_64-sqlite3 | Public Domain |
| libsystre-0.dll | mingw-w64-x86_64-libsystre | BSD |
| libtre-5.dll | mingw-w64-x86_64-libtre-git | BSD |
| libunwind.dll | mingw-w64-x86_64-libunwind | spdx: Apache-2.0 WITH LLVM-exception |
| libwinpthread-1.dll | mingw-w64-x86_64-libwinpthread-git | spdx: MIT AND BSD-3-Clause-Clear |
| libzstd.dll | mingw-w64-x86_64-zstd | BSD |
| zlib1.dll | mingw-w64-x86_64-zlib | spdx: Zlib |
mingw-w64-x86_64-libunwind
This package is licensed under Apache-2.0 with LVM-exceptions. The msys2 package manager lists LLVM as the home page for this package https://llvm.org/. The headers of the source code for in the libunwind packages available llvm.org state:
//===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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