| //===-- DataExtractorTest.cpp ---------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "gtest/gtest.h" |
| |
| #include "lldb/Utility/DataExtractor.h" |
| |
| using namespace lldb_private; |
| |
| TEST(DataExtractorTest, GetBitfield) { |
| uint8_t buffer[] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF}; |
| DataExtractor LE(buffer, sizeof(buffer), lldb::eByteOrderLittle, |
| sizeof(void *)); |
| DataExtractor BE(buffer, sizeof(buffer), lldb::eByteOrderBig, sizeof(void *)); |
| |
| lldb::offset_t offset; |
| |
| offset = 0; |
| ASSERT_EQ(buffer[1], LE.GetMaxU64Bitfield(&offset, sizeof(buffer), 8, 8)); |
| offset = 0; |
| ASSERT_EQ(buffer[1], BE.GetMaxU64Bitfield(&offset, sizeof(buffer), 8, 8)); |
| offset = 0; |
| ASSERT_EQ(static_cast<uint64_t>(0xEFCDAB8967452301), |
| LE.GetMaxU64Bitfield(&offset, sizeof(buffer), 64, 0)); |
| offset = 0; |
| ASSERT_EQ(static_cast<uint64_t>(0x0123456789ABCDEF), |
| BE.GetMaxU64Bitfield(&offset, sizeof(buffer), 64, 0)); |
| offset = 0; |
| ASSERT_EQ(static_cast<uint64_t>(0x01234567), |
| BE.GetMaxU64Bitfield(&offset, sizeof(buffer), 32, 0)); |
| offset = 0; |
| ASSERT_EQ(static_cast<uint64_t>(0x012345678), |
| BE.GetMaxU64Bitfield(&offset, sizeof(buffer), 36, 0)); |
| |
| offset = 0; |
| ASSERT_EQ(int8_t(buffer[1]), |
| LE.GetMaxS64Bitfield(&offset, sizeof(buffer), 8, 8)); |
| offset = 0; |
| ASSERT_EQ(int8_t(buffer[1]), |
| BE.GetMaxS64Bitfield(&offset, sizeof(buffer), 8, 8)); |
| offset = 0; |
| ASSERT_EQ(static_cast<int64_t>(0xEFCDAB8967452301), |
| LE.GetMaxS64Bitfield(&offset, sizeof(buffer), 64, 0)); |
| offset = 0; |
| ASSERT_EQ(static_cast<int64_t>(0x0123456789ABCDEF), |
| BE.GetMaxS64Bitfield(&offset, sizeof(buffer), 64, 0)); |
| } |
| |
| TEST(DataExtractorTest, PeekData) { |
| uint8_t buffer[] = {0x01, 0x02, 0x03, 0x04}; |
| DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4); |
| |
| EXPECT_EQ(buffer + 0, E.PeekData(0, 0)); |
| EXPECT_EQ(buffer + 0, E.PeekData(0, 4)); |
| EXPECT_EQ(nullptr, E.PeekData(0, 5)); |
| |
| EXPECT_EQ(buffer + 2, E.PeekData(2, 0)); |
| EXPECT_EQ(buffer + 2, E.PeekData(2, 2)); |
| EXPECT_EQ(nullptr, E.PeekData(2, 3)); |
| |
| EXPECT_EQ(buffer + 4, E.PeekData(4, 0)); |
| EXPECT_EQ(nullptr, E.PeekData(4, 1)); |
| } |
| |
| TEST(DataExtractorTest, GetCStr) { |
| uint8_t buffer[] = {'X', 'f', 'o', 'o', '\0'}; |
| DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4); |
| |
| lldb::offset_t offset = 1; |
| EXPECT_STREQ("foo", E.GetCStr(&offset)); |
| EXPECT_EQ(5U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetCStrEmpty) { |
| uint8_t buffer[] = {'X', '\0'}; |
| DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4); |
| |
| lldb::offset_t offset = 1; |
| EXPECT_STREQ("", E.GetCStr(&offset)); |
| EXPECT_EQ(2U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetCStrUnterminated) { |
| uint8_t buffer[] = {'X', 'f', 'o', 'o'}; |
| DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4); |
| |
| lldb::offset_t offset = 1; |
| EXPECT_EQ(nullptr, E.GetCStr(&offset)); |
| EXPECT_EQ(1U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetCStrAtEnd) { |
| uint8_t buffer[] = {'X'}; |
| DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4); |
| |
| lldb::offset_t offset = 1; |
| EXPECT_EQ(nullptr, E.GetCStr(&offset)); |
| EXPECT_EQ(1U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetCStrAtNullOffset) { |
| uint8_t buffer[] = {'f', 'o', 'o', '\0'}; |
| DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4); |
| |
| lldb::offset_t offset = 0; |
| EXPECT_STREQ("foo", E.GetCStr(&offset)); |
| EXPECT_EQ(4U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetMaxU64) { |
| uint8_t buffer[] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}; |
| DataExtractor LE(buffer, sizeof(buffer), lldb::eByteOrderLittle, |
| sizeof(void *)); |
| DataExtractor BE(buffer, sizeof(buffer), lldb::eByteOrderBig, sizeof(void *)); |
| |
| lldb::offset_t offset; |
| |
| // Check with the minimum allowed byte size. |
| offset = 0; |
| EXPECT_EQ(0x01U, LE.GetMaxU64(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| offset = 0; |
| EXPECT_EQ(0x01U, BE.GetMaxU64(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| |
| // Check with a non-zero offset. |
| offset = 1; |
| EXPECT_EQ(0x0302U, LE.GetMaxU64(&offset, 2)); |
| EXPECT_EQ(3U, offset); |
| offset = 1; |
| EXPECT_EQ(0x0203U, BE.GetMaxU64(&offset, 2)); |
| EXPECT_EQ(3U, offset); |
| |
| // Check with the byte size not being a multiple of 2. |
| offset = 0; |
| EXPECT_EQ(0x07060504030201U, LE.GetMaxU64(&offset, 7)); |
| EXPECT_EQ(7U, offset); |
| offset = 0; |
| EXPECT_EQ(0x01020304050607U, BE.GetMaxU64(&offset, 7)); |
| EXPECT_EQ(7U, offset); |
| |
| // Check with the maximum allowed byte size. |
| offset = 0; |
| EXPECT_EQ(0x0807060504030201U, LE.GetMaxU64(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| EXPECT_EQ(0x0102030405060708U, BE.GetMaxU64(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetMaxS64) { |
| uint8_t buffer[] = {0x01, 0x02, 0x83, 0x04, 0x05, 0x06, 0x07, 0x08}; |
| DataExtractor LE(buffer, sizeof(buffer), lldb::eByteOrderLittle, |
| sizeof(void *)); |
| DataExtractor BE(buffer, sizeof(buffer), lldb::eByteOrderBig, sizeof(void *)); |
| |
| lldb::offset_t offset; |
| |
| // Check with the minimum allowed byte size. |
| offset = 0; |
| EXPECT_EQ(0x01, LE.GetMaxS64(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| offset = 0; |
| EXPECT_EQ(0x01, BE.GetMaxS64(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| |
| // Check that sign extension works correctly. |
| offset = 0; |
| int64_t value = LE.GetMaxS64(&offset, 3); |
| EXPECT_EQ(0xffffffffff830201U, *reinterpret_cast<uint64_t *>(&value)); |
| EXPECT_EQ(3U, offset); |
| offset = 2; |
| value = BE.GetMaxS64(&offset, 3); |
| EXPECT_EQ(0xffffffffff830405U, *reinterpret_cast<uint64_t *>(&value)); |
| EXPECT_EQ(5U, offset); |
| |
| // Check with the maximum allowed byte size. |
| offset = 0; |
| EXPECT_EQ(0x0807060504830201, LE.GetMaxS64(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| EXPECT_EQ(0x0102830405060708, BE.GetMaxS64(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| } |
| |
| TEST(DataExtractorTest, GetMaxU64_unchecked) { |
| uint8_t buffer[] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}; |
| DataExtractor LE(buffer, sizeof(buffer), lldb::eByteOrderLittle, |
| sizeof(void *)); |
| DataExtractor BE(buffer, sizeof(buffer), lldb::eByteOrderBig, sizeof(void *)); |
| |
| lldb::offset_t offset; |
| |
| // Check with the minimum allowed byte size. |
| offset = 0; |
| EXPECT_EQ(0x01U, LE.GetMaxU64_unchecked(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| offset = 0; |
| EXPECT_EQ(0x01U, BE.GetMaxU64_unchecked(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| |
| // Check with a non-zero offset. |
| offset = 1; |
| EXPECT_EQ(0x0302U, LE.GetMaxU64_unchecked(&offset, 2)); |
| EXPECT_EQ(3U, offset); |
| offset = 1; |
| EXPECT_EQ(0x0203U, BE.GetMaxU64_unchecked(&offset, 2)); |
| EXPECT_EQ(3U, offset); |
| |
| // Check with the byte size not being a multiple of 2. |
| offset = 0; |
| EXPECT_EQ(0x07060504030201U, LE.GetMaxU64_unchecked(&offset, 7)); |
| EXPECT_EQ(7U, offset); |
| offset = 0; |
| EXPECT_EQ(0x01020304050607U, BE.GetMaxU64_unchecked(&offset, 7)); |
| EXPECT_EQ(7U, offset); |
| |
| // Check with the maximum allowed byte size. |
| offset = 0; |
| EXPECT_EQ(0x0807060504030201U, LE.GetMaxU64_unchecked(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| EXPECT_EQ(0x0102030405060708U, BE.GetMaxU64_unchecked(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| } |