| // Copyright 2015 Google Inc. All Rights Reserved. |
| // |
| // 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. |
| |
| #include "syzygy/assm/buffer_serializer.h" |
| |
| #include "gtest/gtest.h" |
| #include "syzygy/assm/unittest_util.h" |
| |
| namespace assm { |
| |
| class BufferSerializerTest : public testing::Test { |
| public: |
| BufferSerializerTest() { |
| } |
| |
| void NopTest(size_t nop_size) { |
| const size_t kOffset = 5U; |
| const size_t kBufferSize = 1024U; |
| |
| // Initialize buffer. |
| uint8_t buffer[kBufferSize]; |
| ::memset(buffer, 0, kBufferSize); |
| |
| // Assemble a NOP into the buffer. |
| BufferSerializer bs(buffer, kBufferSize); |
| AssemblerImpl asm_(reinterpret_cast<uint32_t>(&buffer[kOffset]), &bs); |
| asm_.nop(nop_size); |
| |
| // Should not touch any bytes before offset. |
| for (size_t i = 0; i < kOffset; ++i) { |
| EXPECT_EQ(0U, buffer[i]); |
| } |
| |
| // Should write the proper NOP. |
| for (size_t i = 0; i < nop_size; ++i) { |
| EXPECT_EQ(testing::kNops[nop_size][i], buffer[kOffset + i]); |
| } |
| |
| // Should not touch any bytes after the NOP. |
| for (size_t i = kOffset + nop_size; i < kBufferSize; ++i) { |
| EXPECT_EQ(0U, buffer[i]); |
| } |
| } |
| }; |
| |
| TEST_F(BufferSerializerTest, Nop) { |
| const size_t kMaxNopSizeToTest = 10; |
| |
| for (size_t nop_size = 0; nop_size <= kMaxNopSizeToTest; ++nop_size) { |
| NopTest(nop_size); |
| } |
| } |
| |
| } // namespace assm |