| //===- llvm/unittest/Support/DataExtractorTest.cpp - DataExtractor tests --===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Support/DataExtractor.h" |
| #include "gtest/gtest.h" |
| using namespace llvm; |
| |
| namespace { |
| |
| const char numberData[] = "\x80\x90\xFF\xFF\x80\x00\x00\x00"; |
| const char stringData[] = "hellohello\0hello"; |
| const char leb128data[] = "\xA6\x49"; |
| const char bigleb128data[] = "\xAA\xA9\xFF\xAA\xFF\xAA\xFF\x4A"; |
| |
| TEST(DataExtractorTest, OffsetOverflow) { |
| DataExtractor DE(StringRef(numberData, sizeof(numberData)-1), false, 8); |
| EXPECT_FALSE(DE.isValidOffsetForDataOfSize(-2U, 5)); |
| } |
| |
| TEST(DataExtractorTest, UnsignedNumbers) { |
| DataExtractor DE(StringRef(numberData, sizeof(numberData)-1), false, 8); |
| uint32_t offset = 0; |
| |
| EXPECT_EQ(0x80U, DE.getU8(&offset)); |
| EXPECT_EQ(1U, offset); |
| offset = 0; |
| EXPECT_EQ(0x8090U, DE.getU16(&offset)); |
| EXPECT_EQ(2U, offset); |
| offset = 0; |
| EXPECT_EQ(0x8090FFFFU, DE.getU32(&offset)); |
| EXPECT_EQ(4U, offset); |
| offset = 0; |
| EXPECT_EQ(0x8090FFFF80000000ULL, DE.getU64(&offset)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| EXPECT_EQ(0x8090FFFF80000000ULL, DE.getAddress(&offset)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| |
| uint32_t data[2]; |
| EXPECT_EQ(data, DE.getU32(&offset, data, 2)); |
| EXPECT_EQ(0x8090FFFFU, data[0]); |
| EXPECT_EQ(0x80000000U, data[1]); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| |
| // Now for little endian. |
| DE = DataExtractor(StringRef(numberData, sizeof(numberData)-1), true, 4); |
| EXPECT_EQ(0x9080U, DE.getU16(&offset)); |
| EXPECT_EQ(2U, offset); |
| offset = 0; |
| EXPECT_EQ(0xFFFF9080U, DE.getU32(&offset)); |
| EXPECT_EQ(4U, offset); |
| offset = 0; |
| EXPECT_EQ(0x80FFFF9080ULL, DE.getU64(&offset)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| EXPECT_EQ(0xFFFF9080U, DE.getAddress(&offset)); |
| EXPECT_EQ(4U, offset); |
| offset = 0; |
| |
| EXPECT_EQ(data, DE.getU32(&offset, data, 2)); |
| EXPECT_EQ(0xFFFF9080U, data[0]); |
| EXPECT_EQ(0x80U, data[1]); |
| EXPECT_EQ(8U, offset); |
| } |
| |
| TEST(DataExtractorTest, SignedNumbers) { |
| DataExtractor DE(StringRef(numberData, sizeof(numberData)-1), false, 8); |
| uint32_t offset = 0; |
| |
| EXPECT_EQ(-128, DE.getSigned(&offset, 1)); |
| EXPECT_EQ(1U, offset); |
| offset = 0; |
| EXPECT_EQ(-32624, DE.getSigned(&offset, 2)); |
| EXPECT_EQ(2U, offset); |
| offset = 0; |
| EXPECT_EQ(-2137980929, DE.getSigned(&offset, 4)); |
| EXPECT_EQ(4U, offset); |
| offset = 0; |
| EXPECT_EQ(-9182558167379214336LL, DE.getSigned(&offset, 8)); |
| EXPECT_EQ(8U, offset); |
| } |
| |
| TEST(DataExtractorTest, Strings) { |
| DataExtractor DE(StringRef(stringData, sizeof(stringData)-1), false, 8); |
| uint32_t offset = 0; |
| |
| EXPECT_EQ(stringData, DE.getCStr(&offset)); |
| EXPECT_EQ(11U, offset); |
| EXPECT_EQ(nullptr, DE.getCStr(&offset)); |
| EXPECT_EQ(11U, offset); |
| } |
| |
| TEST(DataExtractorTest, LEB128) { |
| DataExtractor DE(StringRef(leb128data, sizeof(leb128data)-1), false, 8); |
| uint32_t offset = 0; |
| |
| EXPECT_EQ(9382ULL, DE.getULEB128(&offset)); |
| EXPECT_EQ(2U, offset); |
| offset = 0; |
| EXPECT_EQ(-7002LL, DE.getSLEB128(&offset)); |
| EXPECT_EQ(2U, offset); |
| |
| DataExtractor BDE(StringRef(bigleb128data, sizeof(bigleb128data)-1), false,8); |
| offset = 0; |
| EXPECT_EQ(42218325750568106ULL, BDE.getULEB128(&offset)); |
| EXPECT_EQ(8U, offset); |
| offset = 0; |
| EXPECT_EQ(-29839268287359830LL, BDE.getSLEB128(&offset)); |
| EXPECT_EQ(8U, offset); |
| } |
| |
| } |