Verilator should now correctly re-evaluate any logic that depends on
state set in a DPI exported function, including if the DPI export is
called outside eval, or if the DPI export is called from a DPI import.
Whenever the design contains a DPI exported function that sets a
non-local variable, we create a global __Vdpi_export_trigger flag, that
is set in the body of the DPI export, and make all variables set in any
DPI exported functions dependent on this flag (this ensures correct
ordering and change detection on state set in DPI exports when needed).
The DPI export trigger flag is cleared at the end of eval, which ensured
calls to DPI exports outside of eval are detected. Additionally the
ordering is modifies to assume that any call to a 'context' DPI import
might call DPI exports by adding an edge to the ordering graph from the
logic vertex containing the call to the DPI import to the DPI export
trigger variable vertex (note the standard does not allow calls to DPI
exports from DPI imports that were not imported with 'context', so we
do not enforce ordering on those).
This patch introduces the concept of 'loose' methods, which semantically
are methods, but are declared as global functions, and are passed an
explicit 'self' pointer. This enables these methods to be declared
outside the class, only when they are needed, therefore removing the
header dependency. The bulk of the emitted model implementation now uses
loose methods.
A few names were incorrectly mangled, which made --protect-ids produce
invalid output when certain SV class constructs were uses. Now fixed and
added a few extra tests to catch this.
* Add a test to use unpacked array port in hierarchical verilation and protect-lib.
* V3EmitV supports unpacked array variables
* Can Emit local unpacked array properly
* Update golden of t_debug_emitv
* Support unpacked array port in protect-lib
* Remove t_prot_lib_unpacked_bad test as unpacked array is supported now.
* Add tests for unpacked array in DPI-C
* Add more generic parameter generator to AstNodes
* Supports multi dimensional array in DPI ( DPI argmuments <=> Verilator internal type conversion)
consider typedef in V3Task
fix export test
fix inout for scalar
support export func of time
* V3Premit does not show an error for wide words nor ArraySel
* Unnecessary pack func for unapcked array does not appear anymore
* Support unpacked array in runtime header
- Add an overload for lvalue VL_CVT_PACK_STR_NN
- Allow conversion from void *
* touch up tests for codacy advices
* resolve free functions. no functional change intended.
* collect multiple string literals of "__Vcvt". No functional change is intended.
* temporary variable for DPI-C should be static if its type is string
* Update src/V3EmitC.cpp
Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>
Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>
Wilson Snyder
Geza Lore
Yutetsu TAKATSUKASA