Add evmmax unit test

Author: rodiazet

test/unittests/CMakeLists.txt

@@ -34,6 +34,7 @@ target_sources(
     evm_benchmark_test.cpp
     evmmax_bn254_add_test.cpp
     evmmax_bn254_mul_test.cpp
+    evmmax_execution_tests.cpp
     evmmax_test.cpp
     evmmax_secp256k1_test.cpp
     evmone_test.cpp

test/unittests/evmmax_execution_tests.cpp

@@ -0,0 +1,129 @@
+// evmone: Fast Ethereum Virtual Machine implementation
+// Copyright 2019-2020 The evmone Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+/// This file contains EVMMAX execution tests.
+
+#include "evm_fixture.hpp"
+
+using namespace evmc::literals;
+using evmone::test::evm;
+using namespace intx;
+
+TEST_P(evm, evmmax_smoke_test)
+{
+    if (is_advanced())
+        return;
+
+    rev = EVMC_PRAGUE;  /// TODO: Use EVMC_EVMMAX
+    // Modulus == 7
+    auto code = mstore(0, 0x07);
+    // 3 values slots
+    // Modulus size in bytes
+    // Modulus offset in EVM memory
+    // Modulus ID
+    code += setupx(3, 32, 0, 1);
+    // value 3
+    code += mstore(32, 0x03);
+    // value 6
+    code += mstore(64, 0x06);
+    // num values
+    // values offset
+    // store values
+    code += storex(2, 32, 0);
+    // ADDMODX for values in slots 0 and 1 save result in slot 2
+    code += addmodx(2, 1, 0);
+    // MULMODX for values in slots 1 and 2 save result in slot 2
+    code += mulmodx(2, 2, 1);
+    // SUBMODX for values in slots 1 and 2 save result in slot 2
+    code += submodx(2, 2, 1);
+    // load values from slot 2 into EVM memory
+    code += loadx(1, 2, 96);
+    // return loaded result
+    code += ret(96, 32);
+
+    execute(1000, code);
+    EXPECT_EQ(result.status_code, EVMC_SUCCESS);
+    EXPECT_OUTPUT_INT(6);
+}
+
+TEST_P(evm, evmmax_smoke_test_1byte_modulus)
+{
+    if (is_advanced())
+        return;
+
+    rev = EVMC_PRAGUE;  /// TODO: Use EVMC_EVMMAX
+    // Modulus == 7
+    auto code = mstore8(0, 0x07);
+    // 3 values slots
+    // Modulus size in bytes
+    // Modulus offset in EVM memory
+    // Modulus ID
+    code += setupx(3, 1, 0, 1);
+    // value 3
+    code += mstore8(8, 0x03);
+    // value 6
+    code += mstore8(16, 0x06);
+    // num values
+    // values offset
+    // store values
+    code += storex(2, 1, 0);
+    // ADDMODX for values in slots 0 and 1 save result in slot 2
+    code += addmodx(2, 1, 0);
+    // MULMODX for values in slots 1 and 2 save result in slot 2
+    code += mulmodx(2, 2, 1);
+    // SUBMODX for values in slots 1 and 2 save result in slot 2
+    code += submodx(2, 2, 1);
+    // load values from slot 2 into EVM memory
+    code += loadx(1, 2, 17);
+    // return loaded result
+    code += ret(17, 8);
+
+    execute(1000, code);
+    EXPECT_EQ(result.status_code, EVMC_SUCCESS);
+
+    ASSERT_EQ(result.output_size, 8);
+    EXPECT_EQ(hex({result.output_data, result.output_size}), "0000000000000006");
+}
+
+TEST_P(evm, evmmax_smoke_test_2byte_modulus)
+{
+    if (is_advanced())
+        return;
+
+    rev = EVMC_PRAGUE;  /// TODO: Use EVMC_EVMMAX
+    // Modulus == 263 (0x0107)
+    auto code = mstore8(0, 0x01);
+    code += mstore8(1, 0x07);
+    // 3 values slots
+    // Modulus size in bytes
+    // Modulus offset in EVM memory
+    // Modulus ID
+    code += setupx(3, 2, 0, 1);
+    // value 258
+    code += mstore8(8, 0x01);
+    code += mstore8(9, 0x02);
+    // value 254
+    code += mstore8(16, 0x00);
+    code += mstore8(17, 0xfe);
+    // num values
+    // values offset
+    // store values
+    code += storex(2, 2, 0);
+    // ADDMODX for values in slots 0 and 1 save result in slot 2
+    code += addmodx(2, 1, 0);  // 258 + 254 = 249 mod 263
+    // MULMODX for values in slots 1 and 2 save result in slot 2
+    code += mulmodx(2, 2, 1);  // 249 * 254 = 126 mod 263
+    // SUBMODX for values in slots 1 and 2 save result in slot 2
+    code += submodx(2, 2, 1);  // 126 - 254 = 135 mod 263
+    // load values from slot 2 into EVM memory
+    code += loadx(1, 2, 18);
+    // return loaded result
+    code += ret(18, 8);
+
+    execute(1000, code);
+    EXPECT_EQ(result.status_code, EVMC_SUCCESS);
+
+    ASSERT_EQ(result.output_size, 8);
+    EXPECT_EQ(hex({result.output_data, result.output_size}), "0000000000000087");
+}