precompiles: Optionally use silkpre as implementation

README.md

@@ -89,6 +89,20 @@ To build the evmone EVMC module (shared library), test, and benchmark:
    build/bin/evmone-bench test/evm-benchmarks/benchmarks
    ```
 
+### Precompiles
+
+Ethereum Precompiled Contracts (_precompiles_ for short) are not directly supported by evmone.
+
+However, there are options to enable limited precompiles support for testing.
+
+1. The [test/state/precompiles_stub.json](./test/state/precompiles_stub.json) contains
+   precompiles execution results for inputs commonly used in tests.
+   You can use the precompiles STUB by setting the environment variable
+   `EVMONE_PRECOMPILES_STUB=./test/state/precompiles_stub.json`.
+2. The CMake option `EVMONE_PRECOMPILES_SILKPRE=1` enables building of
+   the [silkpre] third party library with the implementation of the precompiles.
+   This library also requires [GMP] (e.g. libgmp-dev) library for building and execution.
+
 ### Tools
 
 #### evm-test
@@ -138,10 +152,12 @@ Licensed under the [Apache License, Version 2.0].
 [EVMC]: https://github.com/ethereum/evmc
 [Ipsilon]: https://github.com/ipsilon
 [Ewasm]: https://github.com/ewasm
+[GMP]: https://gmplib.org
 [intx]: https://github.com/chfast/intx
 [ethash]: https://github.com/chfast/ethash
 [Releases]: https://github.com/ethereum/evmone/releases
 [standard readme]: https://github.com/RichardLitt/standard-readme
+[silkpre]: https://github.com/torquem-ch/silkpre
 
 [appveyor badge]: https://img.shields.io/appveyor/ci/chfast/evmone/master.svg?logo=appveyor
 [circleci badge]: https://img.shields.io/circleci/project/github/ethereum/evmone/master.svg?logo=circleci

circle.yml

@@ -485,6 +485,27 @@ jobs:
       - upload_coverage:
           flags: statetests
 
+  precompiles-silkpre:
+    executor: blockchain-tests
+    environment:
+      BUILD_TYPE: Coverage
+      CMAKE_OPTIONS: -DCMAKE_CXX_FLAGS=-Og -DEVMONE_PRECOMPILES_SILKPRE=1
+    steps:
+      - run:
+          name: "Install GMP"
+          command: sudo apt-get -q update && sudo apt-get -qy install libgmp-dev
+      - build
+      - download_execution_tests:
+          rev: v12.2
+      - run:
+          name: "State tests"
+          working_directory: ~/build
+          command: |
+            bin/evmone-statetest ~/tests/GeneralStateTests ~/tests/LegacyTests/Constantinople/GeneralStateTests
+      - collect_coverage_gcc
+      - upload_coverage:
+          flags: statetests-silkpre
+
   gcc-min:
     executor: linux-gcc-min
     steps:
@@ -666,6 +687,7 @@ workflows:
             tags:
               only: /^v[0-9].*/
       - state-tests
+      - precompiles-silkpre
       - blockchain-tests
       - cmake-min
       - gcc-min

test/state/CMakeLists.txt

@@ -28,3 +28,33 @@ target_sources(
     state.hpp
     state.cpp
 )
+
+option(EVMONE_PRECOMPILES_SILKPRE "Enable precompiles support via silkpre library" OFF)
+if(EVMONE_PRECOMPILES_SILKPRE)
+    include(FetchContent)
+    FetchContent_Declare(
+        silkpre
+        GIT_REPOSITORY https://github.com/torquem-ch/silkpre
+        GIT_TAG 3322bb898ac9528fc2cf9a8df1e48360420d0c1a
+        GIT_SHALLOW TRUE
+    )
+    set(BUILD_SHARED_LIBS_ORIG ${BUILD_SHARED_LIBS})
+    set(BUILD_SHARED_LIBS OFF)
+    FetchContent_MakeAvailable(silkpre)
+    set(BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS_ORIG})
+
+    set_target_properties(
+        silkpre secp256k1 ff
+        PROPERTIES
+        COMPILE_OPTIONS -w  # Disable warnings.
+        CXX_CLANG_TIDY ""
+    )
+
+    target_link_libraries(evmone-state PRIVATE silkpre)
+    target_compile_definitions(evmone-state PRIVATE EVMONE_PRECOMPILES_SILKPRE=1)
+    target_sources(
+        evmone-state PRIVATE
+        precompiles_silkpre.hpp
+        precompiles_silkpre.cpp
+    )
+endif()

test/state/precompiles.cpp

@@ -11,6 +11,10 @@
 #include <limits>
 #include <unordered_map>
 
+#ifdef EVMONE_PRECOMPILES_SILKPRE
+#include "precompiles_silkpre.hpp"
+#endif
+
 namespace evmone::state
 {
 using namespace evmc::literals;
@@ -172,6 +176,16 @@ inline constexpr auto traits = []() noexcept {
         {ecpairing_analyze, dummy_execute<PrecompileId::ecpairing>},
         {blake2bf_analyze, dummy_execute<PrecompileId::blake2bf>},
     }};
+#ifdef EVMONE_PRECOMPILES_SILKPRE
+    tbl[static_cast<size_t>(PrecompileId::ecrecover)].execute = silkpre_ecrecover_execute;
+    tbl[static_cast<size_t>(PrecompileId::sha256)].execute = silkpre_sha256_execute;
+    tbl[static_cast<size_t>(PrecompileId::ripemd160)].execute = silkpre_ripemd160_execute;
+    tbl[static_cast<size_t>(PrecompileId::expmod)].execute = silkpre_expmod_execute;
+    tbl[static_cast<size_t>(PrecompileId::ecadd)].execute = silkpre_ecadd_execute;
+    tbl[static_cast<size_t>(PrecompileId::ecmul)].execute = silkpre_ecmul_execute;
+    tbl[static_cast<size_t>(PrecompileId::ecpairing)].execute = silkpre_ecpairing_execute;
+    tbl[static_cast<size_t>(PrecompileId::blake2bf)].execute = silkpre_blake2bf_execute;
+#endif
     return tbl;
 }();
 }  // namespace

test/state/precompiles_silkpre.cpp

@@ -0,0 +1,80 @@
+// evmone: Fast Ethereum Virtual Machine implementation
+// Copyright 2022 The evmone Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+#include "precompiles_silkpre.hpp"
+#include <silkpre/precompile.h>
+#include <cassert>
+#include <cstring>
+
+namespace evmone::state
+{
+namespace
+{
+ExecutionResult execute(const uint8_t* input, size_t input_size, uint8_t* output_buf,
+    [[maybe_unused]] size_t max_output_size, PrecompileId id) noexcept
+{
+    const auto index = stdx::to_underlying(id) - 1;
+    const auto [output, output_size] = kSilkpreContracts[index].run(input, input_size);
+    if (output == nullptr)
+        return {EVMC_PRECOMPILE_FAILURE, 0};
+
+    // Check if max_output_size computed by analysis match the computed result.
+    assert(output_size <= max_output_size);
+
+    const auto trimmed_output_size = std::min(output_size, max_output_size);
+    std::memcpy(output_buf, output, trimmed_output_size);
+    std::free(output);  // Free output allocation (required by silkpre API).
+    return {EVMC_SUCCESS, trimmed_output_size};
+}
+}  // namespace
+
+ExecutionResult silkpre_ecrecover_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::ecrecover);
+}
+
+ExecutionResult silkpre_sha256_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::sha256);
+}
+
+ExecutionResult silkpre_ripemd160_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::ripemd160);
+}
+
+ExecutionResult silkpre_expmod_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::expmod);
+}
+
+ExecutionResult silkpre_ecadd_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::ecadd);
+}
+
+ExecutionResult silkpre_ecmul_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::ecmul);
+}
+
+
+ExecutionResult silkpre_ecpairing_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::ecpairing);
+}
+
+ExecutionResult silkpre_blake2bf_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept
+{
+    return execute(input, input_size, output_buf, max_output_size, PrecompileId::blake2bf);
+}
+}  // namespace evmone::state

test/state/precompiles_silkpre.hpp

@@ -0,0 +1,33 @@
+// evmone: Fast Ethereum Virtual Machine implementation
+// Copyright 2022 The evmone Authors.
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include "precompiles.hpp"
+
+namespace evmone::state
+{
+ExecutionResult silkpre_ecrecover_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_sha256_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_ripemd160_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_expmod_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_ecadd_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_ecmul_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_ecpairing_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+
+ExecutionResult silkpre_blake2bf_execute(
+    const uint8_t* input, size_t input_size, uint8_t* output_buf, size_t max_output_size) noexcept;
+}  // namespace evmone::state

test/state/precompiles_stub.json

@@ -668,6 +668,7 @@
   },
   {
     "0537dab8bcfa337395fdfbd203d054ac25c08722e9416a0ac259b779a2c87721": "ba80a53f981c4d0d6a2797b69f12f6e94c212f14685ac4b74b12bb6fdbffa2d17d87c5392aab792dc252d5de4533cc9518d38aa8dbf1925ab92386edd4009923",
+    "05bd989b8f157e23dbb02b8bc54d344a60558de44a7ee3f804cf1dfc9e82bbda": "fc59093aafa9ab43daae0e914c57635c5402d8e3d2130eb9b3cc181de7f0ecf9b22bf99a7815ce16419e200e01846e6b5df8cc7703041bbceb571de6631d2615",
     "13d12ef157bef72bdae72d1981ac6bc16ab74176742f7fb689ecef08d3d6bf0d": "d82c6a670dc90af9d7f77644eacbeddfed91b760c65c927871784abceaab3f813759733a1736254fb1cfc515dbfee467930955af56e27ee435f836fc3e65969f",
     "2699f65d0bde17d17b834840e823616c33fb78e1a63f31fb6613bd1b08b888b4": "68790ca7594dd6fc28f0a86b7ddce0a225a8ea8fc2637f910eb71f6e54d9f8fa3e6302691015f11b15b755076d316823e6ce2ee4dd4aef60efc9189f6bd21bfd",
     "30e40ece3441a7de9a9451e74fab98b455c4823f2485b2373a43a8b6c928a9fb": null,