Try to put all the version stamps into common version_base.h
and version_stamp.h header files. All the source programs then
get their version from these header files.
Also handle the version stamps in the man pages by using the
version_*.h header file contents to edit the version strings
in the man page title bar markers.
If the source and destination of a subvector to be moved in the
vvp_vector4_t::mov method is nicely word aligned, and the transfer
size is a full word, then we ar much better off handling that as
a special case. This makes the move faster, and also avoids some
shift overflow errors.
If the delay has an event pending for the current time, then use
that as a reference for calculating the next delay. If that is not
done, then the delay calculated against the wrong reference might
result in zero, and bad results.
For the %mov instruction, implement a vvp_vector4_t::mov method to
manipulate the thread vector directly.
For the %load/v instruction, rework the vec4_value() methods to
avoid creating vvp_vector4_t temporaries, and therefore reduce the
copy overhead.
Apparently, the vpi_user.h definitions for vpiStop et al were added
before they were standardized by 1364-2000, and never corrected.
Change the values to be standard. (Submitted by Matt Trostel.)
I also added some binary compatibility for existing .vpi modules
that were compiled with the older constant values.
This patch removes bin32 from the clean targets since it is no
longer user/created. It adds autom4te.cache to the distclean
target in the main directory. It removes the files in driver
that are not created (lexor.c parse.c, etc.). The *.cc.output
files are no longer created so removing them is not needed.
The local "memory.h" file is no longer used in V0.9 or development,
so it does not need to be included in vvp/codes.h. The VHDL target
does not use the system <memory.h> header file so there is no need
to have a define for it in the vhld_config.h.in file.
- Add missing dependency of configure on aclocal.m4.
- Remove config stamp files in make distclean (and fix another for
loop in base make distclean that I missed)
- Add stamp files to .gitignore
Use the time stamp file technique recommended by the autoconf manual
to prevent unneccesary rebuilds because of an unchanged config.h.
Uses the automake trick of generating the stamp files in the
_AC_AM_CONFIG_HEADER_HOOK macro instead of littering the source
directory with stamp-h.in files.
Add an extra ./config.status run after ./config.status --recheck
because with --recheck it doesn't actually try to remake the generated
files (and thus doesn't make the timestamp files). Thus without the
extra run, each stamp-*-h target would need to independently run
./config.status to make sure it wasn't changed by the configuration
change.
An orthogonal fix of how config.status is called in subdirectories.
When in a subdirectory and config.status is called with
../config.status and $(srcdir) is a relative path, config.status gets
confused. Fixed by replacing '../config.status --file=Makefile.in'
with 'cd ..; ./config.status --file=<dir>/Makefile.in'
This patch adds code to cleanup system functions driving a
continuous assignment. It also modifies the user function
cleanup to not interfere with this. It also adds a count
of the nets and signals that were not cleaned up that is
pnly printed when running valgrind. They are not flagged
y valgrind since they are pool managed objects. There are
a few signals that need to be cleaned up and local nets
are missed so there are a lot of nets.
Even open nets have a driver for HiZ. The BUFZ is needed as something
to hang .net objects. This is another step closer to not needing the
"create_constant_node" hack in vvp/words.cc.
In the olden days, the .alias was necessary to create a net name
that is an alias to an existing net in the netlist. But now that
the .net no longer creates a node in the netlist, ALL .net objects
are aliases of a sort, so this (mis)feature gets in the way.
This patch adds cleanup code that cleans up the memory that is
allocated by the of_EXEC_UFUNC command. This knocks a few more
files off the valgrind list.
The tranif input pins are normally nothing special, but sometimes
they are fed back from the switch body. In this case, the control
needs to see the current *output* from the fed back port, in order
to get the results that people expect.
Control inputs (i.e. the control input to tranif switches)
are not driven in any way by the island, so use .import records
instead of .port records to bring them into the island. Properly
handle the now potentially different bindings within the island
and outside the island. This means the draw_net_input_x function
is a little more sophisticated, and the node data more complex.
This is needed to get vvp to compile under MacOS 10.6 and possibly other
64 bit systems that define uint64_t as unsigned long long vs unsigned
long (both are 64 bits).
Add a configuration check that says we would like to use C99 if the
compiler supports it. Also change the lround(), nan(), fmin() and
fmax() checks to look in the default libraries as well as the math
library.
Update the iverilog-vpi sh script to correctly quote CC since it
may now have two words (gcc -std=gnu99).
Add a missing int for main in draw_tt.c.
Nets that are created after being put off for later processing to
allow the vvp_net to be created, need to be more carefully placed
in the correct scope.
When releasing a net, the release method must force that the
filter propagate the released value to the output. Use the
needs_init_ flag to do that force.
The vpi_callback base class is parent of the filter object of nets,
and not the functor. The good news is the clear_all_callbacks method
can now be got at without casts.
When reading from thread space only read the first 32 bits
(sizeof int) for the part select base. This matches the other
parts of the PV_get_base() code.
This patch fixes a problem in the .part/v select when the index is
undefined. The default value needs to be INT_MIN, so when the long
is cast to an int the value is in range.
To get better functionality in V0.9 and development until we
add a select that is sign aware to .part/v this patch uses
a 32 bit integer (int) for the select value. This allows a
normal Verilog integer to produce the correct results. A
warning for smaller signed index vectors is planned, but it
needs more input.
The first input through a net needs to be propagated, since this
is used as an initialization for the net. This patch also cleans
up wires to not need the width_ member, instead inferring the
width from the saved bit value.
Whether and what to propagate after a release of a part needs to
match the behavior of the full-vector release. Nets need to restore
their driver, and regs need to hold their forced value.
filters need to be able to cope with parts of vectors moving through
the net. It makes the most sense to handle every filter as a part-
selected filter.
&PV<> was just using vpi_get_value() when a signal was driving
the select. This incorrectly returned 0 for 'bx or 'bz. This
patch adds a check for an undefined value and returns INT_MIN
for this case.
Now that .net nodes are references to filters into vvp_net_t objects
and are no longer functors on their own, the .alias node becomes
exactly the same as a .net itself.
When releasing a net, the release needs to propagate the driven
value. When releasing a variable, the driven value must be set
to the previously forced value.
These opcodes need to return 'bx or 0.0 for the real opcode when
the array index is undefined.
The patch also documents the auto incrementing of the bit
index register done by the %load/avx.p opcode.
When a part select is driving another part select any bits outside the
original select must be 'bz instead of 'bx. If we initialize the temporary
buffer to 'bz this should work as required. It there are multiple drivers
then a resolver comes into play and this should not matter.
The %shiftr/i0 and %shiftl/i0 opcodes are used for some part
selects and if we have a negative shift we want the value to be
padded with 'bx. This patch enhances the two %shift/i0 opcodes
to work with negative shifts and for negative shifts pad with
'bx instead of 'b0.
It also fixes %ix/get/s to use a uint64_t instead of a unsigned
long to avoid problems with sign extension on 32 bit machines.
Handle the case where the input to a net is a constant. Since nets
do not exist anymore as nodes in their own right, we need to create
a driver to drive a net from a constant.
Handle forward references of net inputs.
pr2827132 changed the val_ field in vvp_fun_part_sa to only store
the bit values for the selected part, not the entire source vector,
but omitted to modify the recv_vec4_pv method to handle this change.
This patch rectifies that omission.
Two small fixes: Threads should load signal values from signal_value
objects, not signal functors, and the force method should not run
its value through the filter.
It's not too likely we will ever reach this, but we should be nice
and print a message instead of just failing. We could set errno,
but for now the warning will have to be enough.
Currently, edge event functors declared in automatically allocated
scopes that are used to detect edges on signals declared in static
scopes are unable to correctly determine edge information for the
first signal delta they receive because they do not know the old
state of the signal. This patch causes the state of static signals
received by these event functors to be recorded as static state in
the functors, so the old state of the signals can be initialised
to the correct value when a new automatic context is created.
Currently a part select functor will send updates to nodes connected
to its output whenever any part of its input vector changes. This
patch ensures updates are only sent when the selected part of the
input vector changes.
Stephen Williams
Cary R
Jared Casper
Martin Whitaker