1364-2005 section 5.1.12 says "The right operand is always treated
as an unsigned number".
This fixes GitHub issue #283.
(cherry picked from commit 0a4cae2644)
This allows any always processes that are sensitive to the UDP output
to start first. This fixes a time 0 race that was found in a Lattice
Semiconductor simulation library (reported on iverilog-devel).
If the initial value is 'x', propagate the value to the UDP output
before the start of simulation, to avoid unwanted update events on
the z -> x transition on downstream nets.
(cherry picked from commit 3bdb50da29)
In 64-bit Windows, an unsigned long is 32 bits, so initialising the num
member of the union did not properly initialise the ptr member. The num
member isn't actually needed, so eliminate it.
(cherry picked from commit c383d2048c)
- type is vpiPartSelect, not vpiMemoryWord
- left/right range is for part, not full word
- index is not valid for a part select
The user will now get a sensible error message if they pass part of an
array word to $dumpvars (GitHub issue #230).
(cherry picked from commit 8402696676)
bison 3.4.1 writes the header file before the c++ file. Our makefile
rules make the header files depend on the c++ files, so we need to
fix the timestamps accordingly.
(cherry picked from commit 5bb6c7f53a)
When vpi_handle_by_name() iterates over the VPI objects in a scope, handle
the case that vpi_get_str() returns a null value. This currently occurs if
the scope contains an enum type definition, as vpi_get_str() is not
implemented for __vpiEnumTypespec.
(cherry picked from commit 51a13e883a)
Note we only want these enabled when building the compiler and runtime
binaries. If we included the ICARUS_VPI_CONST definition in the global
CPP_FLAGS, that would propagate to the flags used by iverilog-vpi, so
would affect compilation of user VPI code.
(cherry picked from commit 542fe2cf77)
When performing a signed division or modulus operation using native
arithmetic, trap the special case that the numerator is the minimum
integer value and the denominator is -1, as this gives an undefined
result in C++.
(cherry picked from commit 7ad5b59a6f)
The code in vpi_callback.cc is replicated in vpi_vthr_vector.cc,
so we have to replicate the fix. This should really be factored
out.
(cherry picked from commit 6e49ab10ec)
If the functor output is read before any values have propagated to
the functor inputs, the internal storage won't have been initialised.
(cherry picked from commit ad83a135e5)
In vvp, the __vpiSignal object holds a pointer to the scope containing
the signal. This was getting set to the current scope when the net was
finally resolved, rather than to the scope where the net was declared.
(cherry picked from commit c622d372f9)
If a thread becomes detached due to a join_any statement, that
thread must not attempt to join its parent, even if the parent
is waiting on a subsequent join statement.
(cherry picked from commit e315cafa01)
Use test_joinable() and do_join() to ensure everything gets cleaned
up before the thread is reaped. This should fix br1016, br1017, and
br1018.
(cherry picked from commit 0bed890bc6)
(and subsequent fixup)
Normally there is at most one signal attached to a vvp functor, but
due to port collapsing, there can be more than one. If these signals
are array words, we need to trigger vpi callbacks on all the associated
arrays when the functor value changes.
(cherry picked from commit ac87138c44)
SystemVerilog allows tasks, functions, and classes to be defined at the
root level or inside packages, so we can't rely on an enclosing module
being present to provide the timescale.
(cherry picked from commit 7bed181f68)
The implementation of vvp_fun_part_pv::recv_vec4_pv was incorrect, and
propagated the incoming widths rather than the stored widths.
(cherry picked from commit 0c66116f51)
Most vvp functors need to support recv_vec4_pv. Any that are strength-aware
also need to support recv_vec8_pv. Note the simplifying assumption that is
documented in the base class recv_vec4_pv_ implementation.
(cherry picked from commit 6e5ed73b09)
Also initialise the stored operand values to 'bz instead of 'bx to get
the correct results when bits are not driven.
(cherry picked from commit b2f7d09f0d)
Cary R
Greg Steuck
Martin Whitaker
Yury Gribov
Maciej Suminski
Larry Doolittle
Stephen Williams