Remove the #ident and $Log$ strings from all the header files and
almost all of the C/C++ source files. I think it is better to get
this done all at once, then to wait for each of the files to be
touched and edited in unrelated patches.
Tran islands are a kinds of island, so seperate the tran handling
from the core island concept. This will allow for creating new
kinds of islands. (Think analog.)
This patch adds the procedural power function %pow/s for signed
values. This has bit based inputs and outputs, but uses the double
pow() function to calculate the value.
This patch removes the CVS ident information from the Makefile.in
files it also puts in the current version 0.9.devel for the default
VERSION definition. This is normally passed down, but a local make
will use the value from the local Makefile. This will eventually be
replaced with a file based version to give us just one place to
reliably modify the version.
This patch makes the code generator put the compiler version
information in the vvp output file. It also adds checks in vvp
to verify that this version is compatible with the run time.
I am assuming that a base release 0.9.0, etc. will have a
blank VERSION_TAG. Any change relative to the release will have
a VERSION_TAG.
This patch adds a -V flag to the runtime to print version information.
It also updates the manual page to document this and makes some minor
changes to the iverilog an iverilog-vpi manual pages.
Users expect that vpi_put_value() will keep a copy of the string
that is passed to it. This patch implements this buy copying the
string and then freeing it after the actual put_value call.
This configure option causes the installed commands to have
a suffix string that makes them distinct from other versions
that also have a suffix string. This allows for multiple
installed versions of Icarus Verilog.
Also, move installed C/C++ header files into a subdirectory of
their own under the target include directory, to make clearer
the purpose and source of those files.
Eliminate three "warning: suggest parentheses around assignment used as truth value"
Obviously not needed, but it's easier to add the superfluous parentheses
than remember that these warnings are benign.
The VVP %join function was incorrectly treating the return from a
non-automatic function as a return from an automatic function in
the case that the non-automatic function result was being used as
a parameter to an automatic function. This patch fixes this error.
This patch addresses a number of issues:
Rewrote the $test$plusargs and $value$plusargs routines to have
better error/warning messages, to support runtime strings, to
correctly load bit based values (truncating, padding, negative
value), added support for the real formats using strtod() and
added "x/X" as an alias for "h/H" to match the other part of
Icarus.
Rewrite the vpip_{bin,oct,hex}_str_to_vec4 routines to ignore
embedded "_" characters. Add support for a negative value and
set the entire value to 'bx if an invalid digit is found. A
warning is printed for this case.
Rewrite vpip_dec_str_to_vec4 to ignore embedded "_" characters,
to support a single "x" or "z" constant and to return 'bx if an
invalid digit is found. A warning is printed for this case.
It simplifies the system task/functions error/warning messages.
It removes the signed flag for the bin and dec string conversions.
This was not being used (was always false) and the new negative
value support makes this obsolete.
Add support for a real variable to handle Bin, Oct, Dec and Hex
strings. They are converted into a vvp_vector4_t which is then
converted to a real value.
Add support for setting a bit based value using a real value.
Removed an unneeded rfp signal in vpip_make_reg()
This patch adds a number of compile and run-time checks for illegal
uses of variables declared in automatic tasks and functions. It
also adds a check for event expressions in automatic tasks that use
features not yet supported in VVP.
This patch fixes a number of problems related to the divide and
modulus operators.
The net version (CA) of modulus did not support a signed version.
Division or modulus of a value wider than the machine word did
not correctly check for division by zero and return 'bx.
Fixed a problem in procedural modulus. The sign of the result is
only dependent on the L-value.
Division or modulus of a signed value that was the same width as
the machine word was creating an incorrect sign mask.
Division of a signed value that would fit into a single machine
word was not checking for division by zero.
Division or modulus of a wide value was always being done as
unsigned.
Added a negative operator for vvp_vector2_t. This made
implementing the signed wide division and modulus easier.
Support arrays of realtime variable arrays and net arrays. This
involved a simple fix to the ivl core parser, proper support in
the code generator, and rework the runtime support in vvp.
This patch fixes some problems found when trying to dump words
from a real wire array. There are still a few more things that
look suspicious and need testing.
This patch splits any VVP net functor that needs to access both
statically and automatically allocated state into two sub-classes,
one for handling operations on statically allocated state, the
other for handling operations on automatically allocated state.
This undoes the increase in run-time memory use introduced when
automatic task/function support was first introduced.
This patch also fixes various issues with event handling in automatic
scopes. Event expressions in automatic scopes may now reference either
statically or automatically allocated variables or arrays, or part
selects or word selects thereof. More complex expressions (e.g.
containing arithmetic or logical operators, function calls, etc.) are
not currently supported.
This patch introduces some error checking for language constructs
that may not reference automatically allocated variables. Further
error checking will follow in a subsequent patch.
If a part select (either a constant or constant indexed part select)
of a L-value is fully outside the signal the part select will be
omitted after printing a warning. If a part select straddles the
upper portion of a signal a warning will be printed. The run time
will use only the appropriate part of the select. Straddling the
lower part of the signal is not currently supported and a message
is printed for this case.
It is up to the elaborator to sign-extend the inputs if the multiply
is signed in the Verilog source. The run time always processes the
multiply as unsigned.
Start cleaning up shadowed variables, flagged by turning on -Wshadow.
No intended change in functionality. Patch looks right, and is tested
to compile and run on my machine. YMMV.
MinGW uses the GetProcAddress() function to find the address of
the vlog_startup_routines() procedure in a .vpi file. This routine
requires that the leading underscore be omitted from the name even
though the underlying routine really has one.
alloc_instance for real values was just passing a new double
to be added to the context items. The new constructor does
not set the default value so we need to do that manually.
This patch adds non-blocking event control for array words.
It also fixes a problem where the word used to put the
calculated delay for a non-blocking array assignment was
not being released. It also fixes the non-blocking array
assignments to correctly handle off the end/beginning part
selects.
Since some event control assignments can be skipped we need an
event control clear so that future %evctl statements do not fail
their assert. This patch adds %evctl/c and uses it in the compiler
as appropriate to keep the event control information in sync.
This patch adds full event control for vectors and parts of a
vector. It also fixes the other non-blocking part select code
to correctly handle a negative offset ([1:-2] of a [4:0] will
have an offset of -2).
The previous patch (commit 8b0ca902a6)
dealing with the possibilities of (unsigned long) and (vvp_time64_t)
being either the same or different managed to redefine UL_AND_TIME64_DIFF
in the 64-bit case. This does, of course, trigger a compiler warning.
That warning is repeated on every .cc file with a #include "config.h",
which is to say, just about every file.
This patch inverts the sense of the preprocessor conditional, calling
it UL_AND_TIME64_SAME. No more warnings!
A variable that is used to set the delay of a .delay statement
must be scaled to match the local units and for real values
rounded using the precision. This value is then converted to
the simulation precision.
This patch pushes the non-blocking event control information to
the code generator. It adds the %evctl statements that are used
to put the event control information into the special thread
event control registers. The signed version (%evctl/s) required
the implementation of %ix/getv/s to load a signed value into
an index register. It then adds %assign/wr/e event control based
non-blocking assignment for real values. It also fixes the other
non-blocking real assignments to use Transport instead of inertial
delays.
Nothing to do with tab width! Eliminates useless
trailing spaces and tabs, and nearly all <space><tab>
pairings. No change to derived files (e.g., .vvp),
non-master files (e.g., lxt2_write.c) or the new tgt-vhdl
directory.
Low priority, simple entropy reduction. Please apply
unless it deletes some steganographic content you want
to keep.
The right shift of vvp_vector2_t needs to
account for and mask off shifted bits. Otherwise
there will be unexpected results after
a vvp_vector2_t::trim method.
Stephen Williams
Cary R
Larry Doolittle
Martin Whitaker