modules/zstd: Add initial ZSTD Encoder procs

.github/workflows/modules-zstd.yml

@@ -47,11 +47,6 @@ jobs:
         run: |
           bazel test -c opt --test_output=errors -- $(bazel query 'filter(".*_dslx_test", kind(rule, //xls/modules/zstd/...))')
 
-      - name: Test ZSTD Module - CC Tests (opt)
-        if: ${{ !cancelled() }}
-        run: |
-          bazel test -c opt --test_output=errors -- $(bazel query 'filter(".*_cc_test", kind(rule, //xls/modules/zstd/...))')
-
       - name: Build ZSTD verilog targets (opt)
         if: ${{ !cancelled() }}
         run: |
@@ -75,6 +70,11 @@ jobs:
             bazel run -c opt $target -- --logtostderr;
           done
 
+      - name: Build and test verilog simulation of the ZSTD module components (opt)
+        if: ${{ !cancelled() }}
+        run: |
+          bazel test -c opt --test_output=errors -- $(bazel query 'filter(".*_cocotb_test", kind(rule, //xls/modules/zstd/...))')
+
       - name: Build ZSTD place and route targets (opt)
         if: ${{ !cancelled() }}
         run: |

dependency_support/pip_requirements.in

@@ -13,6 +13,11 @@ pyyaml==6.0.1
 # We build most of z3 ourselves but building python is really complicated. Just
 # use pypi version
 z3-solver==4.14.0.0
+pytest==8.2.2
+cocotb==1.9.0
+cocotbext-axi==0.1.24
+cocotb_bus==0.2.1
+zstandard==0.23.0
 
 # Note: numpy and scipy version availability seems to differ between Ubuntu
 # versions that we want to support (e.g. 18.04 vs 20.04), so we accept a

dependency_support/pip_requirements_lock.txt

@@ -14,6 +14,56 @@ click==8.1.3 \
     # via
     #   -r dependency_support/pip_requirements.in
     #   flask
+cocotb==1.9.0 \
+    --hash=sha256:02a58ef6c941114964096e7c039bdd4e67e63816cfd2f6a9af6a34cd92b00e8e \
+    --hash=sha256:0819794ef5e8fd14fee0b265933226cf600e85edc2f1a749b4d5f8fa2d31ce4e \
+    --hash=sha256:0ba35617a677ff65a1273411a3dfdfc5f587128ad8cb9e941ab0eb17ec8fb3e2 \
+    --hash=sha256:17556e3a23562f64d577d0eb117fe02e384aedee997b29497b5c395f5010ff82 \
+    --hash=sha256:19b4e27b53a16e0b9c4cc5227c7f9d4dccac06e431a4f937e9f5513350196333 \
+    --hash=sha256:1a0381ced5590a726032ba2265c6b70ac12cfb49edb152be86a081bb7d104751 \
+    --hash=sha256:1aff68cf77059448a9a3278079037e34b50c8c2aee466d984295fa7fe699d390 \
+    --hash=sha256:277281420fd6fc3002bb85d6bec497bd20ff3a3905d4b5f1301faf975f750ede \
+    --hash=sha256:2daf743320331615f4e8ffb877ab0b04e6f913b911bb11bf9dbc1d876d9c4220 \
+    --hash=sha256:2e9bcdbfba3e99c9297bd0d74ba781772d89d2c86e893980784ada252bd1a0f8 \
+    --hash=sha256:3058c977f9d4e1f6333d505947f34b9142910719f1d8631c40a151dd86bad727 \
+    --hash=sha256:5832d894419a9e8fe5c242e3ac86588e16e2cb379822dcb154bfec8544ae858e \
+    --hash=sha256:598b841ed0809e5c64d8c383b8035f6ace5a6f9013f680cdc6981221911c005d \
+    --hash=sha256:5a5c91027d7652aaf10e101743edd6b1e832039a19af75fca301275ef30f01d4 \
+    --hash=sha256:61418f619af72c8cca8de622785b4f4bfc17ace09981de6eb44feae560cf3bbb \
+    --hash=sha256:784c914c8df3fd79cfb148d2bcd17c4b2703c89af1278ed98773afb57ceea3e6 \
+    --hash=sha256:87a19d3012f505ba7fda37483b851ef0ca40290ad8a9b28a820b84f8574287bb \
+    --hash=sha256:89503f0749362d36b6fab8636710f1848943c21f9d488672921bac21e9edd29f \
+    --hash=sha256:89e5189fd393918c27af2daefdcb13df4d52fa761f065d5964d2c4ff5c0642fb \
+    --hash=sha256:8cb4b0edf8f0b47c3b604b461cb574fc75fd97efa893cbaf828f4f2f71cf459e \
+    --hash=sha256:94e884e16186899ad5b4d131c3f7ff0a2277e67ea0660754e8810a4bbf2d610e \
+    --hash=sha256:997dbca2a2cd933fd0a44d9fadeebc1e8a40701db15ea06f207811933dceb350 \
+    --hash=sha256:a7cea13cb2fe4f5ca735490846342885117778a73008a67ed9cac667aaaf3f0d \
+    --hash=sha256:a84edfbfa57dc6e16845a55feb0b4e1c8b6bbfa5ef1ab6768beba8d81e0546aa \
+    --hash=sha256:a95b5e5708a3629d319d2b655d11345cc7e97fea9bdc9bc1df7435926ac30966 \
+    --hash=sha256:aa6818c39ca1ce699e4bb1d84899c4f98c2d25c7671bd6c7beee3b1ee9d68834 \
+    --hash=sha256:ab99bf7e055780b57419d4133fd4dca9c72a03b766a3e2200552f10498eb8845 \
+    --hash=sha256:b966f5560a494fd99f95a1562f9326ca20c35bb118d4e6b50db41da8e4a6f718 \
+    --hash=sha256:bc44a7708a5a63d3059a622c2fb90831dc33534c3343e971f5a6c78905097baa \
+    --hash=sha256:c11e21d291ba2f889e33c21d76e9aec6ffdfb5666053dc34452666579daa675b \
+    --hash=sha256:c848de13583478d71cc91e528e17c051ca6a3b92e89d703ac5015f17cab1287b \
+    --hash=sha256:d944aa5509a0f0786d6f30554a2f8b1f229847f9ac9988879d7a05497739f668 \
+    --hash=sha256:f50862153e1364f6edeaef9d70505093549fa097e9b2555ea46d1e4f94ac3287 \
+    --hash=sha256:f74c598e230e1035103f6e3a97dd7a0e1bcacf7f3ea7481cd3bcde477b74e379 \
+    --hash=sha256:fcb81c6c37e11b0729768dd8e192a9cfb809778699ab1fe89f4d92ba0beb3092 \
+    --hash=sha256:ff2ddc8b304eb7076ceead2534a1b9828df771798fa9c2601ea983c86d23ec08
+    # via
+    #   -r dependency_support/pip_requirements.in
+    #   cocotb-bus
+    #   cocotbext-axi
+cocotb-bus==0.2.1 \
+    --hash=sha256:a197aa4b0e0ad28469c8877b41b3fb2ec0206da9f491b9276d1578ce6dd8aa8d
+    # via
+    #   -r dependency_support/pip_requirements.in
+    #   cocotbext-axi
+cocotbext-axi==0.1.24 \
+    --hash=sha256:3ed62dcaf9448833176826507c5bc5c346431c4846a731e409d87c862d960593 \
+    --hash=sha256:533ba6c7503c6302bdb9ef86e43a549ad5da876eafb1adce23d39751c54cced4
+    # via -r dependency_support/pip_requirements.in
 contourpy==1.3.1 \
     --hash=sha256:041b640d4ec01922083645a94bb3b2e777e6b626788f4095cf21abbe266413c1 \
     --hash=sha256:05e806338bfeaa006acbdeba0ad681a10be63b26e1b17317bfac3c5d98f36cda \
@@ -74,6 +124,10 @@ cycler==0.12.1 \
     --hash=sha256:85cef7cff222d8644161529808465972e51340599459b8ac3ccbac5a854e0d30 \
     --hash=sha256:88bb128f02ba341da8ef447245a9e138fae777f6a23943da4540077d3601eb1c
     # via matplotlib
+find-libpython==0.4.0 \
+    --hash=sha256:034a4253bd57da3408aefc59aeac1650150f6c1f42e10fdd31615cf1df0842e3 \
+    --hash=sha256:46f9cdcd397ddb563b2d7592ded3796a41c1df5222443bd9d981721c906c03e6
+    # via cocotb
 flask==2.3.2 \
     --hash=sha256:77fd4e1249d8c9923de34907236b747ced06e5467ecac1a7bb7115ae0e9670b0 \
     --hash=sha256:8c2f9abd47a9e8df7f0c3f091ce9497d011dc3b31effcf4c85a6e2b50f4114ef
@@ -130,6 +184,10 @@ fonttools==4.55.8 \
     --hash=sha256:f089e8da0990cfe2d67e81d9cf581ff372b48dc5acf2782701844211cd1f0eb3 \
     --hash=sha256:f971aa5f50c22dc4b63a891503624ae2c77330429b34ead32f23c2260c5618cd
     # via matplotlib
+iniconfig==2.0.0 \
+    --hash=sha256:2d91e135bf72d31a410b17c16da610a82cb55f6b0477d1a902134b24a455b8b3 \
+    --hash=sha256:b6a85871a79d2e3b22d2d1b94ac2824226a63c6b741c88f7ae975f18b6778374
+    # via pytest
 itsdangerous==2.1.2 \
     --hash=sha256:2c2349112351b88699d8d4b6b075022c0808887cb7ad10069318a8b0bc88db44 \
     --hash=sha256:5dbbc68b317e5e42f327f9021763545dc3fc3bfe22e6deb96aaf1fc38874156a
@@ -346,7 +404,9 @@ numpy==1.24.4 \
 packaging==24.2 \
     --hash=sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759 \
     --hash=sha256:c228a6dc5e932d346bc5739379109d49e8853dd8223571c7c5b55260edc0b97f
-    # via matplotlib
+    # via
+    #   matplotlib
+    #   pytest
 pillow==11.1.0 \
     --hash=sha256:015c6e863faa4779251436db398ae75051469f7c903b043a48f078e437656f83 \
     --hash=sha256:0a2f91f8a8b367e7a57c6e91cd25af510168091fb89ec5146003e424e1558a96 \
@@ -420,6 +480,10 @@ pillow==11.1.0 \
     --hash=sha256:f86d3a7a9af5d826744fabf4afd15b9dfef44fe69a98541f666f66fbb8d3fef9 \
     --hash=sha256:fbd43429d0d7ed6533b25fc993861b8fd512c42d04514a0dd6337fb3ccf22761
     # via matplotlib
+pluggy==1.5.0 \
+    --hash=sha256:2cffa88e94fdc978c4c574f15f9e59b7f4201d439195c3715ca9e2486f1d0cf1 \
+    --hash=sha256:44e1ad92c8ca002de6377e165f3e0f1be63266ab4d554740532335b9d75ea669
+    # via pytest
 portpicker==1.3.1 \
     --hash=sha256:d2cdc776873635ed421315c4d22e63280042456bbfa07397817e687b142b9667
     # via -r dependency_support/pip_requirements.in
@@ -440,6 +504,10 @@ pyparsing==3.2.1 \
     --hash=sha256:506ff4f4386c4cec0590ec19e6302d3aedb992fdc02c761e90416f158dacf8e1 \
     --hash=sha256:61980854fd66de3a90028d679a954d5f2623e83144b5afe5ee86f43d762e5f0a
     # via matplotlib
+pytest==8.2.2 \
+    --hash=sha256:c434598117762e2bd304e526244f67bf66bbd7b5d6cf22138be51ff661980343 \
+    --hash=sha256:de4bb8104e201939ccdc688b27a89a7be2079b22e2bd2b07f806b6ba71117977
+    # via -r dependency_support/pip_requirements.in
 python-dateutil==2.9.0.post0 \
     --hash=sha256:37dd54208da7e1cd875388217d5e00ebd4179249f90fb72437e91a35459a0ad3 \
     --hash=sha256:a8b2bc7bffae282281c8140a97d3aa9c14da0b136dfe83f850eea9a5f7470427
@@ -541,3 +609,102 @@ z3-solver==4.14.0.0 \
     --hash=sha256:c10f899c6a876e3a50e9b2c4927604c2c3da3cca672b8ed3b7db1bc97259e47f \
     --hash=sha256:e6ae32bc1cf4d25b96f790755d790a23118e8a09b9b6060e32238fe6ff43606d
     # via -r dependency_support/pip_requirements.in
+zstandard==0.23.0 \
+    --hash=sha256:034b88913ecc1b097f528e42b539453fa82c3557e414b3de9d5632c80439a473 \
+    --hash=sha256:0a7f0804bb3799414af278e9ad51be25edf67f78f916e08afdb983e74161b916 \
+    --hash=sha256:11e3bf3c924853a2d5835b24f03eeba7fc9b07d8ca499e247e06ff5676461a15 \
+    --hash=sha256:12a289832e520c6bd4dcaad68e944b86da3bad0d339ef7989fb7e88f92e96072 \
+    --hash=sha256:1516c8c37d3a053b01c1c15b182f3b5f5eef19ced9b930b684a73bad121addf4 \
+    --hash=sha256:157e89ceb4054029a289fb504c98c6a9fe8010f1680de0201b3eb5dc20aa6d9e \
+    --hash=sha256:1bfe8de1da6d104f15a60d4a8a768288f66aa953bbe00d027398b93fb9680b26 \
+    --hash=sha256:1e172f57cd78c20f13a3415cc8dfe24bf388614324d25539146594c16d78fcc8 \
+    --hash=sha256:1fd7e0f1cfb70eb2f95a19b472ee7ad6d9a0a992ec0ae53286870c104ca939e5 \
+    --hash=sha256:203d236f4c94cd8379d1ea61db2fce20730b4c38d7f1c34506a31b34edc87bdd \
+    --hash=sha256:27d3ef2252d2e62476389ca8f9b0cf2bbafb082a3b6bfe9d90cbcbb5529ecf7c \
+    --hash=sha256:29a2bc7c1b09b0af938b7a8343174b987ae021705acabcbae560166567f5a8db \
+    --hash=sha256:2ef230a8fd217a2015bc91b74f6b3b7d6522ba48be29ad4ea0ca3a3775bf7dd5 \
+    --hash=sha256:2ef3775758346d9ac6214123887d25c7061c92afe1f2b354f9388e9e4d48acfc \
+    --hash=sha256:2f146f50723defec2975fb7e388ae3a024eb7151542d1599527ec2aa9cacb152 \
+    --hash=sha256:2fb4535137de7e244c230e24f9d1ec194f61721c86ebea04e1581d9d06ea1269 \
+    --hash=sha256:32ba3b5ccde2d581b1e6aa952c836a6291e8435d788f656fe5976445865ae045 \
+    --hash=sha256:34895a41273ad33347b2fc70e1bff4240556de3c46c6ea430a7ed91f9042aa4e \
+    --hash=sha256:379b378ae694ba78cef921581ebd420c938936a153ded602c4fea612b7eaa90d \
+    --hash=sha256:38302b78a850ff82656beaddeb0bb989a0322a8bbb1bf1ab10c17506681d772a \
+    --hash=sha256:3aa014d55c3af933c1315eb4bb06dd0459661cc0b15cd61077afa6489bec63bb \
+    --hash=sha256:4051e406288b8cdbb993798b9a45c59a4896b6ecee2f875424ec10276a895740 \
+    --hash=sha256:40b33d93c6eddf02d2c19f5773196068d875c41ca25730e8288e9b672897c105 \
+    --hash=sha256:43da0f0092281bf501f9c5f6f3b4c975a8a0ea82de49ba3f7100e64d422a1274 \
+    --hash=sha256:445e4cb5048b04e90ce96a79b4b63140e3f4ab5f662321975679b5f6360b90e2 \
+    --hash=sha256:48ef6a43b1846f6025dde6ed9fee0c24e1149c1c25f7fb0a0585572b2f3adc58 \
+    --hash=sha256:50a80baba0285386f97ea36239855f6020ce452456605f262b2d33ac35c7770b \
+    --hash=sha256:519fbf169dfac1222a76ba8861ef4ac7f0530c35dd79ba5727014613f91613d4 \
+    --hash=sha256:53dd9d5e3d29f95acd5de6802e909ada8d8d8cfa37a3ac64836f3bc4bc5512db \
+    --hash=sha256:53ea7cdc96c6eb56e76bb06894bcfb5dfa93b7adcf59d61c6b92674e24e2dd5e \
+    --hash=sha256:576856e8594e6649aee06ddbfc738fec6a834f7c85bf7cadd1c53d4a58186ef9 \
+    --hash=sha256:59556bf80a7094d0cfb9f5e50bb2db27fefb75d5138bb16fb052b61b0e0eeeb0 \
+    --hash=sha256:5d41d5e025f1e0bccae4928981e71b2334c60f580bdc8345f824e7c0a4c2a813 \
+    --hash=sha256:61062387ad820c654b6a6b5f0b94484fa19515e0c5116faf29f41a6bc91ded6e \
+    --hash=sha256:61f89436cbfede4bc4e91b4397eaa3e2108ebe96d05e93d6ccc95ab5714be512 \
+    --hash=sha256:62136da96a973bd2557f06ddd4e8e807f9e13cbb0bfb9cc06cfe6d98ea90dfe0 \
+    --hash=sha256:64585e1dba664dc67c7cdabd56c1e5685233fbb1fc1966cfba2a340ec0dfff7b \
+    --hash=sha256:65308f4b4890aa12d9b6ad9f2844b7ee42c7f7a4fd3390425b242ffc57498f48 \
+    --hash=sha256:66b689c107857eceabf2cf3d3fc699c3c0fe8ccd18df2219d978c0283e4c508a \
+    --hash=sha256:6a41c120c3dbc0d81a8e8adc73312d668cd34acd7725f036992b1b72d22c1772 \
+    --hash=sha256:6f77fa49079891a4aab203d0b1744acc85577ed16d767b52fc089d83faf8d8ed \
+    --hash=sha256:72c68dda124a1a138340fb62fa21b9bf4848437d9ca60bd35db36f2d3345f373 \
+    --hash=sha256:752bf8a74412b9892f4e5b58f2f890a039f57037f52c89a740757ebd807f33ea \
+    --hash=sha256:76e79bc28a65f467e0409098fa2c4376931fd3207fbeb6b956c7c476d53746dd \
+    --hash=sha256:774d45b1fac1461f48698a9d4b5fa19a69d47ece02fa469825b442263f04021f \
+    --hash=sha256:77da4c6bfa20dd5ea25cbf12c76f181a8e8cd7ea231c673828d0386b1740b8dc \
+    --hash=sha256:77ea385f7dd5b5676d7fd943292ffa18fbf5c72ba98f7d09fc1fb9e819b34c23 \
+    --hash=sha256:80080816b4f52a9d886e67f1f96912891074903238fe54f2de8b786f86baded2 \
+    --hash=sha256:80a539906390591dd39ebb8d773771dc4db82ace6372c4d41e2d293f8e32b8db \
+    --hash=sha256:82d17e94d735c99621bf8ebf9995f870a6b3e6d14543b99e201ae046dfe7de70 \
+    --hash=sha256:837bb6764be6919963ef41235fd56a6486b132ea64afe5fafb4cb279ac44f259 \
+    --hash=sha256:84433dddea68571a6d6bd4fbf8ff398236031149116a7fff6f777ff95cad3df9 \
+    --hash=sha256:8c24f21fa2af4bb9f2c492a86fe0c34e6d2c63812a839590edaf177b7398f700 \
+    --hash=sha256:8ed7d27cb56b3e058d3cf684d7200703bcae623e1dcc06ed1e18ecda39fee003 \
+    --hash=sha256:9206649ec587e6b02bd124fb7799b86cddec350f6f6c14bc82a2b70183e708ba \
+    --hash=sha256:983b6efd649723474f29ed42e1467f90a35a74793437d0bc64a5bf482bedfa0a \
+    --hash=sha256:98da17ce9cbf3bfe4617e836d561e433f871129e3a7ac16d6ef4c680f13a839c \
+    --hash=sha256:9c236e635582742fee16603042553d276cca506e824fa2e6489db04039521e90 \
+    --hash=sha256:9da6bc32faac9a293ddfdcb9108d4b20416219461e4ec64dfea8383cac186690 \
+    --hash=sha256:a05e6d6218461eb1b4771d973728f0133b2a4613a6779995df557f70794fd60f \
+    --hash=sha256:a0817825b900fcd43ac5d05b8b3079937073d2b1ff9cf89427590718b70dd840 \
+    --hash=sha256:a4ae99c57668ca1e78597d8b06d5af837f377f340f4cce993b551b2d7731778d \
+    --hash=sha256:a8c86881813a78a6f4508ef9daf9d4995b8ac2d147dcb1a450448941398091c9 \
+    --hash=sha256:a8fffdbd9d1408006baaf02f1068d7dd1f016c6bcb7538682622c556e7b68e35 \
+    --hash=sha256:a9b07268d0c3ca5c170a385a0ab9fb7fdd9f5fd866be004c4ea39e44edce47dd \
+    --hash=sha256:ab19a2d91963ed9e42b4e8d77cd847ae8381576585bad79dbd0a8837a9f6620a \
+    --hash=sha256:ac184f87ff521f4840e6ea0b10c0ec90c6b1dcd0bad2f1e4a9a1b4fa177982ea \
+    --hash=sha256:b0e166f698c5a3e914947388c162be2583e0c638a4703fc6a543e23a88dea3c1 \
+    --hash=sha256:b2170c7e0367dde86a2647ed5b6f57394ea7f53545746104c6b09fc1f4223573 \
+    --hash=sha256:b2d8c62d08e7255f68f7a740bae85b3c9b8e5466baa9cbf7f57f1cde0ac6bc09 \
+    --hash=sha256:b4567955a6bc1b20e9c31612e615af6b53733491aeaa19a6b3b37f3b65477094 \
+    --hash=sha256:b69bb4f51daf461b15e7b3db033160937d3ff88303a7bc808c67bbc1eaf98c78 \
+    --hash=sha256:b8c0bd73aeac689beacd4e7667d48c299f61b959475cdbb91e7d3d88d27c56b9 \
+    --hash=sha256:be9b5b8659dff1f913039c2feee1aca499cfbc19e98fa12bc85e037c17ec6ca5 \
+    --hash=sha256:bf0a05b6059c0528477fba9054d09179beb63744355cab9f38059548fedd46a9 \
+    --hash=sha256:c16842b846a8d2a145223f520b7e18b57c8f476924bda92aeee3a88d11cfc391 \
+    --hash=sha256:c363b53e257246a954ebc7c488304b5592b9c53fbe74d03bc1c64dda153fb847 \
+    --hash=sha256:c7c517d74bea1a6afd39aa612fa025e6b8011982a0897768a2f7c8ab4ebb78a2 \
+    --hash=sha256:d20fd853fbb5807c8e84c136c278827b6167ded66c72ec6f9a14b863d809211c \
+    --hash=sha256:d2240ddc86b74966c34554c49d00eaafa8200a18d3a5b6ffbf7da63b11d74ee2 \
+    --hash=sha256:d477ed829077cd945b01fc3115edd132c47e6540ddcd96ca169facff28173057 \
+    --hash=sha256:d50d31bfedd53a928fed6707b15a8dbeef011bb6366297cc435accc888b27c20 \
+    --hash=sha256:dc1d33abb8a0d754ea4763bad944fd965d3d95b5baef6b121c0c9013eaf1907d \
+    --hash=sha256:dc5d1a49d3f8262be192589a4b72f0d03b72dcf46c51ad5852a4fdc67be7b9e4 \
+    --hash=sha256:e2d1a054f8f0a191004675755448d12be47fa9bebbcffa3cdf01db19f2d30a54 \
+    --hash=sha256:e7792606d606c8df5277c32ccb58f29b9b8603bf83b48639b7aedf6df4fe8171 \
+    --hash=sha256:ed1708dbf4d2e3a1c5c69110ba2b4eb6678262028afd6c6fbcc5a8dac9cda68e \
+    --hash=sha256:f2d4380bf5f62daabd7b751ea2339c1a21d1c9463f1feb7fc2bdcea2c29c3160 \
+    --hash=sha256:f3513916e8c645d0610815c257cbfd3242adfd5c4cfa78be514e5a3ebb42a41b \
+    --hash=sha256:f8346bfa098532bc1fb6c7ef06783e969d87a99dd1d2a5a18a892c1d7a643c58 \
+    --hash=sha256:f83fa6cae3fff8e98691248c9320356971b59678a17f20656a9e59cd32cee6d8 \
+    --hash=sha256:fa6ce8b52c5987b3e34d5674b0ab529a4602b632ebab0a93b07bfb4dfc8f8a33 \
+    --hash=sha256:fb2b1ecfef1e67897d336de3a0e3f52478182d6a47eda86cbd42504c5cbd009a \
+    --hash=sha256:fc9ca1c9718cb3b06634c7c8dec57d24e9438b2aa9a0f02b8bb36bf478538880 \
+    --hash=sha256:fd30d9c67d13d891f2360b2a120186729c111238ac63b43dbd37a5a40670b8ca \
+    --hash=sha256:fd7699e8fd9969f455ef2926221e0233f81a2542921471382e77a9e2f2b57f4b \
+    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
+    # via -r dependency_support/pip_requirements.in

third_party/verilog_axi/BUILD

@@ -0,0 +1,56 @@
+# Copyright 2024 The XLS Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Collection of external RTL sources
+
+This package exports external verilog sources required by the ZSTD Decoder
+in the verilog tests.
+
+The exported files come from the Open Source library of the AXI4 and AXI4 lite
+bus components released under MIT license.
+
+The sources contain an implementation of the AXI4 crossbar which is used in the
+verilog tests of the ZSTD Decoder to connect multiple AXI interfaces into a single
+AXI interface that forms the IO of the ZSTD Decoder verilog wrapper used in the tests.
+
+Source: https://github.com/alexforencich/verilog-axi
+"""
+
+load("@rules_license//rules:license.bzl", "license")
+
+package(
+    default_applicable_licenses = [":license"],
+    default_visibility = ["//xls:xls_users"],
+    licenses = ["notice"],
+)
+
+license(
+    name = "license",
+    package_name = "verilog_axi",
+)
+
+exports_files(
+    [
+        "arbiter.v",
+        "axi_crossbar.v",
+        "axi_crossbar_addr.v",
+        "axi_crossbar_rd.v",
+        "axi_crossbar_wr.v",
+        "axi_crossbar_wrapper.v",
+        "axi_register_rd.v",
+        "axi_register_wr.v",
+        "priority_encoder.v",
+        "LICENSE",
+    ],
+)

third_party/verilog_axi/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2018 Alex Forencich
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.