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-rw-r--r--os/dos/copying339
-rw-r--r--os/dos/copying.dj48
-rw-r--r--os/dos/copying.lib481
-rw-r--r--os/dos/cwsdpmi.exebin0 -> 20125 bytes
-rw-r--r--os/dos/cwsdpmi.txt173
-rw-r--r--os/dos/cwsdstub.exebin0 -> 21504 bytes
-rw-r--r--os/dos/exe2coff.c94
-rwxr-xr-xos/dos/make_dos_binary_selfcontained.sh9
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diff --git a/os/dos/copying b/os/dos/copying
new file mode 100644
index 000000000..a43ea2126
--- /dev/null
+++ b/os/dos/copying
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+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ Appendix: How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) 19yy <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) 19yy name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/os/dos/copying.dj b/os/dos/copying.dj
new file mode 100644
index 000000000..8a5504784
--- /dev/null
+++ b/os/dos/copying.dj
@@ -0,0 +1,48 @@
+This is the file "copying.dj". It does NOT apply to any sources or
+binaries copyrighted by UCB Berkeley, the Free Software Foundation, or
+any other agency besides DJ Delorie and others who have agreed to
+allow their sources to be distributed under these terms.
+
+ Copyright Information for sources and executables that are marked
+ Copyright (C) DJ Delorie
+ 7 Kim Lane
+ Rochester NH 03867-2954
+
+This document is Copyright (C) DJ Delorie and may be distributed
+verbatim, but changing it is not allowed.
+
+Source code copyright DJ Delorie is distributed under the terms of the
+GNU General Public Licence, with the following exceptions:
+
+* Sources used to build crt0.o, gcrt0.o, libc.a, libdbg.a, and
+ libemu.a are distributed under the terms of the GNU Library General
+ Public License, rather than the GNU GPL.
+
+* Any existing copyright or authorship information in any given source
+ file must remain intact. If you modify a source file, a notice to that
+ effect must be added to the authorship information in the source file.
+
+* Runtime binaries, as provided by DJ in DJGPP, may be distributed
+ without sources ONLY if the recipient is given sufficient information
+ to obtain a copy of djgpp themselves. This primarily applies to
+ go32-v2.exe, emu387.dxe, and stubedit.exe.
+
+* Runtime objects and libraries, as provided by DJ in DJGPP, when
+ linked into an application, may be distributed without sources ONLY
+ if the recipient is given sufficient information to obtain a copy of
+ djgpp themselves. This primarily applies to crt0.o and libc.a.
+
+-----
+
+Changes to source code copyright BSD, FSF, or others, by DJ Delorie
+fall under the terms of the original copyright. Such files usually
+have multiple copyright notices in them.
+
+A copy of the files "COPYING" and "COPYING.LIB" are included with this
+document. If you did not receive a copy of these files, you may
+obtain one from whence this document was obtained, or by writing:
+
+ Free Software Foundation
+ 59 Temple Place - Suite 330
+ Boston, MA 02111-1307
+ USA
diff --git a/os/dos/copying.lib b/os/dos/copying.lib
new file mode 100644
index 000000000..bbe3fe198
--- /dev/null
+++ b/os/dos/copying.lib
@@ -0,0 +1,481 @@
+ GNU LIBRARY GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ 675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL. It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+ This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it. You can use it for
+your libraries, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if
+you distribute copies of the library, or if you modify it.
+
+ For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you. You must make sure that they, too, receive or can get the source
+code. If you link a program with the library, you must provide
+complete object files to the recipients so that they can relink them
+with the library, after making changes to the library and recompiling
+it. And you must show them these terms so they know their rights.
+
+ Our method of protecting your rights has two steps: (1) copyright
+the library, and (2) offer you this license which gives you legal
+permission to copy, distribute and/or modify the library.
+
+ Also, for each distributor's protection, we want to make certain
+that everyone understands that there is no warranty for this free
+library. If the library is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original
+version, so that any problems introduced by others will not reflect on
+the original authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that companies distributing free
+software will individually obtain patent licenses, thus in effect
+transforming the program into proprietary software. To prevent this,
+we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+ Most GNU software, including some libraries, is covered by the ordinary
+GNU General Public License, which was designed for utility programs. This
+license, the GNU Library General Public License, applies to certain
+designated libraries. This license is quite different from the ordinary
+one; be sure to read it in full, and don't assume that anything in it is
+the same as in the ordinary license.
+
+ The reason we have a separate public license for some libraries is that
+they blur the distinction we usually make between modifying or adding to a
+program and simply using it. Linking a program with a library, without
+changing the library, is in some sense simply using the library, and is
+analogous to running a utility program or application program. However, in
+a textual and legal sense, the linked executable is a combined work, a
+derivative of the original library, and the ordinary General Public License
+treats it as such.
+
+ Because of this blurred distinction, using the ordinary General
+Public License for libraries did not effectively promote software
+sharing, because most developers did not use the libraries. We
+concluded that weaker conditions might promote sharing better.
+
+ However, unrestricted linking of non-free programs would deprive the
+users of those programs of all benefit from the free status of the
+libraries themselves. This Library General Public License is intended to
+permit developers of non-free programs to use free libraries, while
+preserving your freedom as a user of such programs to change the free
+libraries that are incorporated in them. (We have not seen how to achieve
+this as regards changes in header files, but we have achieved it as regards
+changes in the actual functions of the Library.) The hope is that this
+will lead to faster development of free libraries.
+
+ The precise terms and conditions for copying, distribution and
+modification follow. Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library". The
+former contains code derived from the library, while the latter only
+works together with the library.
+
+ Note that it is possible for a library to be covered by the ordinary
+General Public License rather than by this special one.
+
+ GNU LIBRARY GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License Agreement applies to any software library which
+contains a notice placed by the copyright holder or other authorized
+party saying it may be distributed under the terms of this Library
+General Public License (also called "this License"). Each licensee is
+addressed as "you".
+
+ A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+ The "Library", below, refers to any such software library or work
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+ "Source code" for a work means the preferred form of the work for
+making modifications to it. For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+ Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
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+
+ 1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
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+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+ You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+ 2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) The modified work must itself be a software library.
+
+ b) You must cause the files modified to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ c) You must cause the whole of the work to be licensed at no
+ charge to all third parties under the terms of this License.
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+ d) If a facility in the modified Library refers to a function or a
+ table of data to be supplied by an application program that uses
+ the facility, other than as an argument passed when the facility
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+ table, the facility still operates, and performs whatever part of
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+ (For example, a function in a library to compute square roots has
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+These requirements apply to the modified work as a whole. If
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+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
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+ Copyright (C) <year> <name of author>
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+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
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+ Yoyodyne, Inc., hereby disclaims all copyright interest in the
+ library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+ <signature of Ty Coon>, 1 April 1990
+ Ty Coon, President of Vice
+
+That's all there is to it!
diff --git a/os/dos/cwsdpmi.exe b/os/dos/cwsdpmi.exe
new file mode 100644
index 000000000..17e322002
--- /dev/null
+++ b/os/dos/cwsdpmi.exe
Binary files differ
diff --git a/os/dos/cwsdpmi.txt b/os/dos/cwsdpmi.txt
new file mode 100644
index 000000000..14b09c4d7
--- /dev/null
+++ b/os/dos/cwsdpmi.txt
@@ -0,0 +1,173 @@
+CWSDPMI is Copyright (C) 1995-2000 Charles W Sandmann (sandmann@clio.rice.edu)
+ 1206 Braelinn, Sugar Land, TX 77479
+
+This is release 5. The files in this binary distribution may be redistributed
+under the GPL (with source) or without the source code provided:
+
+* CWSDPMI.EXE or CWSDPR0.EXE are not modified in any way except via CWSPARAM.
+
+* CWSDSTUB.EXE internal contents are not modified in any way except via
+ CWSPARAM or STUBEDIT. It may have a COFF image plus data appended to it.
+
+* Notice to users that they have the right to receive the source code and/or
+ binary updates for CWSDPMI. Distributors should indicate a site for the
+ source in their documentation.
+
+-------------------------------------------------------------------------------
+
+CWSDPMI was written to provide DPMI services for V2 of DJGPP. It currently
+does not support 16-bit DPMI applications, or DPMI applications requiring a
+built in extender. It does support virtual memory and hardware interrupt
+reflection from real mode to protected mode. DJGPP V1.1x and RSX applications
+will also run using this server, which can be used to provide enhanced control
+over hardware interrupts. Some DPMI 1.0 extensions (0x506, 0x507, 0x508) have
+been implemented.
+
+CWSDPR0.EXE is an alternate version which runs at ring 0 with virtual memory
+disabled. It may be used if access to ring-0 features are desired. It
+currently does not switch stacks on HW interrupts, so some DJGPP features
+such as SIGINT and SIGFPE are not supported and will generate a double fault
+or stack fault error (to be fixed someday).
+
+CWSDSTUB.EXE is a stub loader image for DJGPP which includes CWSDPMI. This
+allows single executable image distributions. You can use the EXE2COFF
+program and COPY /B CWSDSTUB.EXE+yourimage yourimage.exe to create a
+standalone executable image.
+
+Some of the internal tuning and configuration parameters may be modified
+in the image using CWSPARAM.EXE (see CWSPARAM.DOC).
+
+If you want to use CWSDPMI with DJGPP, you expand the distribution into the
+DJGPP directory tree. CWSDPMI.EXE will be put in the BIN directory with your
+DJGPP images and it will automatically be loaded when they run.
+
+Directions for use (server can be used in either of two different ways):
+
+1) "cwsdpmi" alone with no parameters will terminate and stay resident
+ FOR A SINGLE DPMI PROCESS. This means it unloads itself when your
+ DPMI application exits. This mode is useful in software which needs
+ DPMI services, since CWSDPMI can be exec'ed and then will unload on exit.
+
+2) "cwsdpmi -p" will terminate and stay resident until you remove it.
+ It can be loaded into UMBs with LH. "cwsdpmi -u" will unload the TSR.
+
+3) The file used for virtual memory swapping, if desired, is controlled
+ by the "-sc:\cwsdpmi.swp" syntax on the command line. You must specify
+ either a file with full disk/directory syntax, or "-s-" which disables
+ virtual memory.
+
+4) The default swap file name is c:\cwsdpmi.swp, but this can be changed
+ with the CWSPARAM image, as can some other parameters.
+
+5) You can disable the DPMI 1.0 extensions by starting the image with the
+ "cwsdpmi -x" syntax. This feature allows you to run programs developed
+ under other DPMI providers which do not behave properly with these
+ extensions enabled (typically use of NULL pointers).
+
+I would like to give special thanks to DJ Delorie who wrote the original
+GO32 code on which CWSDPMI is based. Morten Welinder also provided and
+improved much of the code in this program.
+
+-------------------------------------------------------------------------------
+
+This section contains a list of the error messages you might see out of
+CWSDPMI and some details on what they mean.
+
+Exceptions are only handled by CWSDPMI if the application does not establish
+an exception handler, exceptions nest 5 deep, or the error is particularly bad:
+
+"Page fault" -
+ 1) an illegal page fault happens in a RMCB or HW interrupt, (lock all pages!)
+ 2) all available pages have been locked,
+ 3) the application is using non-committed pages for null pointer protection.
+"Double Fault" - multiple exceptions occurred
+"Invalid TSS" - typically due to RMCB or HW interrupt being called after the
+ selectors/memory have been deallocated (remember to reset the mouse)
+"General Protection Fault" - bad parameter sent to a DPMI call
+
+"80386 required."
+
+Since 80286 and lesser processors don't have the hardware necessary to
+run CWSDPMI. No workaround, upgrade.
+
+"DOS 3 required."
+
+A few interrupts are used which need DOS 3.0 or higher. I don't expect to
+ever see this message, since 80386 machines were introduced after DOS 3.0
+and that check is made first.
+
+"CWSDPMI V0.90+ (r5) Copyright (C) 2000 CW Sandmann ABSOLUTELY NO WARRANTY"
+
+An informational message displayed if the program is not run in one-pass mode.
+
+"Protected mode not accessible."
+
+This message should only be displayed if running CWSDPMI in a protected
+environment with no access to protected mode. In this case, DPMI should
+already be available and CWSDPMI would not be needed. This might happen if
+a 16-bit DPMI client is loaded and a DJGPP image attempts to load CWSDPMI
+to provide 32-bit DPMI services under Windows.
+
+"Warning: cannot open swap file c:\cwsdpmi.swp"
+
+Maybe you are out of file handles, or the swap file name is incorrectly
+specified in the image (change the name with cwsparam).
+
+"No swap space!"
+
+This message means you tried to use more paging file than CWSDPMI was
+configured to handle. Since this is protected against in the memory
+allocation code, you should never see this message.
+
+"Swap disk full!"
+
+This means the paging file could not be expanded when trying to page
+memory out to disk. This would normally not be seen, unless you are
+writing output to the same disk which holds the paging file. Decrease
+the amount of memory your DPMI application is using or free up disk space.
+
+"Interrupt 0x??"
+
+Your application tried to call an interrupt from protected mode which
+normally shouldn't be called (something like a data pointer). If the
+request was allowed to continue it would likely hang your machine. If you
+see this message and think the interrupt should be allowed to continue, let
+me know.
+
+"Error: Using XMS switched CPU into V86 mode."
+
+This message might be seen if you have your memory manager in AUTO mode. The
+only workaround in this case is to stop using AUTO mode.
+
+"Error: could not allocate page table memory"
+
+The page table memory (a minimum of 16Kb) is allocated from conventional
+memory (either in the 640Kb region or UMBs). If CWSDPMI cannot allocate the
+minimum necessary memory, you would see this message. Free up some
+conventional memory. You may also see this message if a page directory needs
+to be faulted in, and there are no available pages. This means too many pages
+have been locked for the allocated page tables available. While CWSDPMI
+tries to dynamically allocate these if needed, this effort failed. You need
+to increase the number of page tables with CWSPARAM, or increase the amount
+of free conventional memory if it is low. If the application which calls
+CWSDPMI internally manages all the DOS memory, the page tables may need to
+be pre-allocated at DPMI startup time (if this is needed, try using the
+run option flag 2 in cwsparam).
+
+"16-bit DPMI unsupported."
+
+CWSDPMI is a 32-bit only DPMI server. Ideally, on the request to enter DPMI's
+PM with a 16-bit request, we would just fail the call setting the carry bit
+like the DPMI specification describes. Some buggy 16-bit compiler tools don't
+check the return status and will hang the machine in this case. So, I issue
+an error message and exit the image instead.
+
+"Descriptors exhausted."
+
+An attempt to nest a DPMI client failed in the setup phase due to insufficient
+free selectors in the LDT.
+
+"CWSDPMI not removed"
+
+When the -u parameter is specified, if DPMI is not detected this message is
+printed. Informational.
diff --git a/os/dos/cwsdstub.exe b/os/dos/cwsdstub.exe
new file mode 100644
index 000000000..fabaf3bf4
--- /dev/null
+++ b/os/dos/cwsdstub.exe
Binary files differ
diff --git a/os/dos/exe2coff.c b/os/dos/exe2coff.c
new file mode 100644
index 000000000..aa072e8e4
--- /dev/null
+++ b/os/dos/exe2coff.c
@@ -0,0 +1,94 @@
+/* Copyright (C) 1998 DJ Delorie, see COPYING.DJ for details */
+/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
+/* Updated 2008 to use fread/fopen and friends instead of read/open so it compiles with GCC on Unix (Rubidium) */
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+
+
+static void
+exe2aout(char *fname)
+{
+ unsigned short header[3];
+ FILE *ifile;
+ FILE *ofile;
+ char buf[4096];
+ int rbytes;
+ char *dot = strrchr(fname, '.');
+ if (!dot || strlen(dot) != 4
+ || tolower(dot[1]) != 'e'
+ || tolower(dot[2]) != 'x'
+ || tolower(dot[3]) != 'e')
+ {
+ fprintf(stderr, "%s: Arguments MUST end with a .exe extension\n", fname);
+ return;
+ }
+
+ ifile = fopen(fname, "rb");
+ if (!ifile)
+ {
+ perror(fname);
+ return;
+ }
+ fread(header, sizeof(header), 1, ifile);
+ if (header[0] == 0x5a4d)
+ {
+ long header_offset = (long)header[2]*512L;
+ if (header[1])
+ header_offset += (long)header[1] - 512L;
+ fseek(ifile, header_offset, SEEK_SET);
+ header[0] = 0;
+ fread(header, sizeof(header), 1, ifile);
+ if ((header[0] != 0x010b) && (header[0] != 0x014c))
+ {
+ fprintf(stderr, "`%s' does not have a COFF/AOUT program appended to it\n", fname);
+ return;
+ }
+ fseek(ifile, header_offset, SEEK_SET);
+ }
+ else
+ {
+ fprintf(stderr, "`%s' is not an .EXE file\n", fname);
+ return;
+ }
+
+ *dot = 0;
+ ofile = fopen(fname, "w+b");
+ if (!ofile)
+ {
+ perror(fname);
+ return;
+ }
+
+ while ((rbytes=fread(buf, 1, 4096, ifile)) > 0)
+ {
+ int wb = fwrite(buf, 1, rbytes, ofile);
+ if (wb < 0)
+ {
+ perror(fname);
+ break;
+ }
+ if (wb < rbytes)
+ {
+ fprintf(stderr, "`%s': disk full\n", fname);
+ exit(1);
+ }
+ }
+ fclose(ifile);
+ fclose(ofile);
+}
+
+int
+main(int argc, char **argv)
+{
+ int i;
+ if (argc == 1) printf("Usage: %s <exename>", argv[0]);
+ for (i=1; i<argc; i++)
+ exe2aout(argv[i]);
+ return 0;
+}
+
diff --git a/os/dos/make_dos_binary_selfcontained.sh b/os/dos/make_dos_binary_selfcontained.sh
new file mode 100755
index 000000000..de4bdb9dd
--- /dev/null
+++ b/os/dos/make_dos_binary_selfcontained.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+cd `dirname $0`
+cc -o exe2coff exe2coff.c || exit
+cp $1 binary.exe || exit
+./exe2coff binary.exe || exit
+cat cwsdstub.exe binary > binary.exe || exit
+mv binary.exe $1
+rm binary exe2coff