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Wilson Snyder 2009-10-22 15:46:47 -04:00
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165
COPYING.LESSER Normal file
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@ -0,0 +1,165 @@
GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
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(ten or fewer lines in length), you do both of the following:
a) Give prominent notice with each copy of the object code that the
Library is used in it and that the Library and its use are
covered by this License.
b) Accompany the object code with a copy of the GNU GPL and this license
document.
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You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
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these notices, as well as a reference directing the user to the
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you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
5. Combined Libraries.
You may place library facilities that are a work based on the
Library side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
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Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
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Library.

3
Makefile.in
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@ -104,7 +104,8 @@ DISTDEP = info Makefile
# Files to distribute.
DISTBIN = $(wildcard bin/verilator-*)
DISTFILES_INC = $(INFOS) .gitignore Artistic COPYING *.in *.ac \
DISTFILES_INC = $(INFOS) .gitignore Artistic COPYING COPYING.LESSER \
*.in *.ac \
Changes README TODO \
MANIFEST.SKIP \
bin/* \

36
bin/verilator
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@ -665,7 +665,7 @@ Disable the specified warning message.
=item -Wno-lint
Disable all lint related warning messages. This is equivelent to
Disable all lint related warning messages. This is equivalent to
"-Wno-CASEINCOMPLETE -Wno-CASEOVERLAP -Wno-CASEX -Wno-CASEWITHX
-Wno-CMPCONST -Wno-IMPLICIT -Wno-UNDRIVEN -Wno-UNSIGNED -Wno-UNUSED
-Wno-VARHIDDEN -Wno-WIDTH".
@ -1888,7 +1888,7 @@ correctly.
Warns that a case statement contains a constant with a C<x>. Verilator is
two-state so interpret such items as always false. Note a common error is
to use a C<X> in a case or casez statement item; often what the user
instead insteaded is to use a casez with C<?>.
instead intended is to use a casez with C<?>.
Ignoring this warning will only suppress the lint check, it will simulate
correctly.
@ -2158,7 +2158,7 @@ correctly.
=item WIDTHCONCAT
Warns that based on width rules of Verilog, a concatenate or replication
has a undeterminate width. In most cases this violates the Verilog rule
has a indeterminate width. In most cases this violates the Verilog rule
that widths inside concatenates and replicates must be sized, and should be
fixed in the code.
@ -2226,10 +2226,10 @@ Visual C++ Version 7 or newer, but this is not tested by the author.
=item Can you provide binaries?
Verilator is available as a RPM for SuSE, Redhat and perhaps other systems;
this is done by porters and may slightly lag the primary distribution. If
there isn't a binary build for your distribution, how about you set one up?
Please contact the authors for assistance.
Verilator is available as a RPM for SuSE, Fedora, and perhaps other
systems; this is done by porters and may slightly lag the primary
distribution. If there isn't a binary build for your distribution, how
about you set one up? Please contact the authors for assistance.
Note people sometimes request binaries when they are having problems with
their C++ compiler. Alas, binaries won't help this, as in the end a fully
@ -2249,18 +2249,24 @@ so your simulator shouldn't have to be -- and Verilator is closer to the
synthesis interpretation, so this is a good thing for getting working
silicon.
=item May programs I create with Verilator remain under my own copyright?
=item Will Verilator output remain under my own copyright?
Yes, it's just like using GCC on your programs; this is why Verilator uses
the "GNU *Lesser* Public License" instead of the more typical "GNU Public
License". If you change Verilator itself or the header files Verilator
includes, you must make the source code available under the GNU Lesser
Public License. However, Verilator output (the Verilated code) only
includes the licensed files, and so you are NOT required to release any
output from Verilator.
the "GNU *Lesser* Public License Version 3" instead of the more typical
"GNU Public License". See the licenses for details, but in brief, if you
change Verilator itself or the header files Verilator includes, you must
make the source code available under the GNU Lesser Public License.
However, Verilator output (the Verilated code) only "include"s the licensed
files, and so you are NOT required to release any output from Verilator.
You also have the option of using the Perl Artistic License, which again
does not require you release your Verilog or generated code.
does not require you release your Verilog or generated code, and also
allows you to modify Verilator for internal use without distributing the
modified version. But please contribute back to the community!
One limit is that you cannot under either license release a commercial
simulation product incorporating Verilator without making the source code
available.
=item Why is running Verilator so slow?

6
readme.texi
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@ -29,9 +29,9 @@ This is the Verilator Package.
This package is Copyright 2003-2009 by Wilson Snyder @email{wsnyder@@wsnyder.org}.
Verilator is free software; you can redistribute it and/or modify it
under the terms of either the GNU General Public License Version 3 or
the Perl Artistic License Version 2.0. (See the documentation for
more details.)
under the terms of either the GNU Lesser General Public License
Version 3 or the Perl Artistic License Version 2.0. (See the
documentation for more details.)
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of