mirror of
https://github.com/YosysHQ/yosys
synced 2025-11-04 05:19:11 +00:00
80 lines
2.3 KiB
ReStructuredText
80 lines
2.3 KiB
ReStructuredText
Auxiliary libraries
|
|
===================
|
|
|
|
The Yosys source distribution contains some auxiliary libraries that are
|
|
compiled into Yosys and can be used in plugins.
|
|
|
|
BigInt
|
|
------
|
|
|
|
The files in ``libs/bigint/`` provide a library for performing arithmetic with
|
|
arbitrary length integers. It is written by Matt McCutchen.
|
|
|
|
The BigInt library is used for evaluating constant expressions, e.g. using the
|
|
ConstEval class provided in kernel/consteval.h.
|
|
|
|
See also: http://mattmccutchen.net/bigint/
|
|
|
|
dlfcn-win32
|
|
-----------
|
|
|
|
The ``dlfcn`` library enables runtime loading of plugins without requiring
|
|
recompilation of Yosys. The files in ``libs/dlfcn-win32`` provide an
|
|
implementation of ``dlfcn`` for Windows.
|
|
|
|
See also: https://github.com/dlfcn-win32/dlfcn-win32
|
|
|
|
ezSAT
|
|
-----
|
|
|
|
The files in ``libs/ezsat`` provide a library for simplifying generating CNF
|
|
formulas for SAT solvers. It also contains bindings of MiniSAT. The ezSAT
|
|
library is written by C. Wolf. It is used by the `sat` pass.
|
|
|
|
fst
|
|
---
|
|
|
|
``libfst`` files from `gtkwave`_ are included in ``libs/fst`` to support
|
|
reading/writing signal traces from/to the GTKWave developed FST format. This is
|
|
primarily used in the `sim` command.
|
|
|
|
.. _gtkwave: https://github.com/gtkwave/gtkwave
|
|
|
|
json11
|
|
------
|
|
|
|
For reading/writing designs from/to JSON, `read_json` and
|
|
`write_json` should be used. For everything else there is the `json11
|
|
library`_:
|
|
|
|
json11 is a tiny JSON library for C++11, providing JSON parsing and
|
|
serialization.
|
|
|
|
This library is used for outputting machine-readable statistics (`stat`
|
|
with ``-json`` flag), using the RPC frontend (`connect_rpc`), and the
|
|
yosys-witness ``yw`` format.
|
|
|
|
.. _json11 library: https://github.com/dropbox/json11
|
|
|
|
MiniSAT
|
|
-------
|
|
|
|
The files in ``libs/minisat`` provide a high-performance SAT solver, used by the
|
|
`sat` command.
|
|
|
|
SHA1
|
|
----
|
|
|
|
The files in ``libs/sha1/`` provide a public domain SHA1 implementation written
|
|
by Steve Reid, Bruce Guenter, and Volker Grabsch. It is used for generating
|
|
unique names when specializing parameterized modules.
|
|
|
|
.. _sec:SubCircuit:
|
|
|
|
SubCircuit
|
|
----------
|
|
|
|
The files in ``libs/subcircuit`` provide a library for solving the subcircuit
|
|
isomorphism problem. It is written by C. Wolf and based on the Ullmann Subgraph
|
|
Isomorphism Algorithm :cite:p:`UllmannSubgraphIsomorphism`. It is used by the
|
|
`extract` pass.
|