1 //===- ELFTest.cpp - Tests for ELF.cpp ------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "llvm/Object/ELF.h"
10 #include "llvm/Testing/Support/Error.h"
11 #include "gtest/gtest.h"
12 
13 using namespace llvm;
14 using namespace llvm::object;
15 using namespace llvm::ELF;
16 
TEST(ELFTest,getELFRelocationTypeNameForVE)17 TEST(ELFTest, getELFRelocationTypeNameForVE) {
18   EXPECT_EQ("R_VE_NONE", getELFRelocationTypeName(EM_VE, R_VE_NONE));
19   EXPECT_EQ("R_VE_REFLONG", getELFRelocationTypeName(EM_VE, R_VE_REFLONG));
20   EXPECT_EQ("R_VE_REFQUAD", getELFRelocationTypeName(EM_VE, R_VE_REFQUAD));
21   EXPECT_EQ("R_VE_SREL32", getELFRelocationTypeName(EM_VE, R_VE_SREL32));
22   EXPECT_EQ("R_VE_HI32", getELFRelocationTypeName(EM_VE, R_VE_HI32));
23   EXPECT_EQ("R_VE_LO32", getELFRelocationTypeName(EM_VE, R_VE_LO32));
24   EXPECT_EQ("R_VE_PC_HI32", getELFRelocationTypeName(EM_VE, R_VE_PC_HI32));
25   EXPECT_EQ("R_VE_PC_LO32", getELFRelocationTypeName(EM_VE, R_VE_PC_LO32));
26   EXPECT_EQ("R_VE_GOT32", getELFRelocationTypeName(EM_VE, R_VE_GOT32));
27   EXPECT_EQ("R_VE_GOT_HI32", getELFRelocationTypeName(EM_VE, R_VE_GOT_HI32));
28   EXPECT_EQ("R_VE_GOT_LO32", getELFRelocationTypeName(EM_VE, R_VE_GOT_LO32));
29   EXPECT_EQ("R_VE_GOTOFF32", getELFRelocationTypeName(EM_VE, R_VE_GOTOFF32));
30   EXPECT_EQ("R_VE_GOTOFF_HI32",
31             getELFRelocationTypeName(EM_VE, R_VE_GOTOFF_HI32));
32   EXPECT_EQ("R_VE_GOTOFF_LO32",
33             getELFRelocationTypeName(EM_VE, R_VE_GOTOFF_LO32));
34   EXPECT_EQ("R_VE_PLT32", getELFRelocationTypeName(EM_VE, R_VE_PLT32));
35   EXPECT_EQ("R_VE_PLT_HI32", getELFRelocationTypeName(EM_VE, R_VE_PLT_HI32));
36   EXPECT_EQ("R_VE_PLT_LO32", getELFRelocationTypeName(EM_VE, R_VE_PLT_LO32));
37   EXPECT_EQ("R_VE_RELATIVE", getELFRelocationTypeName(EM_VE, R_VE_RELATIVE));
38   EXPECT_EQ("R_VE_GLOB_DAT", getELFRelocationTypeName(EM_VE, R_VE_GLOB_DAT));
39   EXPECT_EQ("R_VE_JUMP_SLOT", getELFRelocationTypeName(EM_VE, R_VE_JUMP_SLOT));
40   EXPECT_EQ("R_VE_COPY", getELFRelocationTypeName(EM_VE, R_VE_COPY));
41   EXPECT_EQ("R_VE_DTPMOD64", getELFRelocationTypeName(EM_VE, R_VE_DTPMOD64));
42   EXPECT_EQ("R_VE_DTPOFF64", getELFRelocationTypeName(EM_VE, R_VE_DTPOFF64));
43   EXPECT_EQ("R_VE_TLS_GD_HI32",
44             getELFRelocationTypeName(EM_VE, R_VE_TLS_GD_HI32));
45   EXPECT_EQ("R_VE_TLS_GD_LO32",
46             getELFRelocationTypeName(EM_VE, R_VE_TLS_GD_LO32));
47   EXPECT_EQ("R_VE_TPOFF_HI32",
48             getELFRelocationTypeName(EM_VE, R_VE_TPOFF_HI32));
49   EXPECT_EQ("R_VE_TPOFF_LO32",
50             getELFRelocationTypeName(EM_VE, R_VE_TPOFF_LO32));
51   EXPECT_EQ("R_VE_CALL_HI32", getELFRelocationTypeName(EM_VE, R_VE_CALL_HI32));
52   EXPECT_EQ("R_VE_CALL_LO32", getELFRelocationTypeName(EM_VE, R_VE_CALL_LO32));
53 }
54 
TEST(ELFTest,getELFRelocationTypeNameForLoongArch)55 TEST(ELFTest, getELFRelocationTypeNameForLoongArch) {
56   EXPECT_EQ("R_LARCH_NONE",
57             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_NONE));
58   EXPECT_EQ("R_LARCH_32", getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_32));
59   EXPECT_EQ("R_LARCH_64", getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_64));
60   EXPECT_EQ("R_LARCH_RELATIVE",
61             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_RELATIVE));
62   EXPECT_EQ("R_LARCH_COPY",
63             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_COPY));
64   EXPECT_EQ("R_LARCH_JUMP_SLOT",
65             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_JUMP_SLOT));
66   EXPECT_EQ("R_LARCH_TLS_DTPMOD32",
67             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_TLS_DTPMOD32));
68   EXPECT_EQ("R_LARCH_TLS_DTPMOD64",
69             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_TLS_DTPMOD64));
70   EXPECT_EQ("R_LARCH_TLS_DTPREL32",
71             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_TLS_DTPREL32));
72   EXPECT_EQ("R_LARCH_TLS_DTPREL64",
73             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_TLS_DTPREL64));
74   EXPECT_EQ("R_LARCH_TLS_TPREL32",
75             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_TLS_TPREL32));
76   EXPECT_EQ("R_LARCH_TLS_TPREL64",
77             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_TLS_TPREL64));
78   EXPECT_EQ("R_LARCH_IRELATIVE",
79             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_IRELATIVE));
80 
81   EXPECT_EQ("R_LARCH_MARK_LA",
82             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_MARK_LA));
83   EXPECT_EQ("R_LARCH_MARK_PCREL",
84             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_MARK_PCREL));
85   EXPECT_EQ("R_LARCH_SOP_PUSH_PCREL",
86             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_PCREL));
87   EXPECT_EQ("R_LARCH_SOP_PUSH_ABSOLUTE",
88             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_ABSOLUTE));
89   EXPECT_EQ("R_LARCH_SOP_PUSH_DUP",
90             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_DUP));
91   EXPECT_EQ("R_LARCH_SOP_PUSH_GPREL",
92             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_GPREL));
93   EXPECT_EQ("R_LARCH_SOP_PUSH_TLS_TPREL",
94             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_TLS_TPREL));
95   EXPECT_EQ("R_LARCH_SOP_PUSH_TLS_GOT",
96             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_TLS_GOT));
97   EXPECT_EQ("R_LARCH_SOP_PUSH_TLS_GD",
98             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_TLS_GD));
99   EXPECT_EQ("R_LARCH_SOP_PUSH_PLT_PCREL",
100             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_PUSH_PLT_PCREL));
101   EXPECT_EQ("R_LARCH_SOP_ASSERT",
102             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_ASSERT));
103   EXPECT_EQ("R_LARCH_SOP_NOT",
104             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_NOT));
105   EXPECT_EQ("R_LARCH_SOP_SUB",
106             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_SUB));
107   EXPECT_EQ("R_LARCH_SOP_SL",
108             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_SL));
109   EXPECT_EQ("R_LARCH_SOP_SR",
110             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_SR));
111   EXPECT_EQ("R_LARCH_SOP_ADD",
112             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_ADD));
113   EXPECT_EQ("R_LARCH_SOP_AND",
114             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_AND));
115   EXPECT_EQ("R_LARCH_SOP_IF_ELSE",
116             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_IF_ELSE));
117   EXPECT_EQ("R_LARCH_SOP_POP_32_S_10_5",
118             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_S_10_5));
119   EXPECT_EQ("R_LARCH_SOP_POP_32_U_10_12",
120             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_U_10_12));
121   EXPECT_EQ("R_LARCH_SOP_POP_32_S_10_12",
122             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_S_10_12));
123   EXPECT_EQ("R_LARCH_SOP_POP_32_S_10_16",
124             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_S_10_16));
125   EXPECT_EQ(
126       "R_LARCH_SOP_POP_32_S_10_16_S2",
127       getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_S_10_16_S2));
128   EXPECT_EQ("R_LARCH_SOP_POP_32_S_5_20",
129             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_S_5_20));
130   EXPECT_EQ("R_LARCH_SOP_POP_32_S_0_5_10_16_S2",
131             getELFRelocationTypeName(EM_LOONGARCH,
132                                      R_LARCH_SOP_POP_32_S_0_5_10_16_S2));
133   EXPECT_EQ("R_LARCH_SOP_POP_32_S_0_10_10_16_S2",
134             getELFRelocationTypeName(EM_LOONGARCH,
135                                      R_LARCH_SOP_POP_32_S_0_10_10_16_S2));
136   EXPECT_EQ("R_LARCH_SOP_POP_32_U",
137             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SOP_POP_32_U));
138   EXPECT_EQ("R_LARCH_ADD8",
139             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_ADD8));
140   EXPECT_EQ("R_LARCH_ADD16",
141             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_ADD16));
142   EXPECT_EQ("R_LARCH_ADD24",
143             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_ADD24));
144   EXPECT_EQ("R_LARCH_ADD32",
145             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_ADD32));
146   EXPECT_EQ("R_LARCH_ADD64",
147             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_ADD64));
148   EXPECT_EQ("R_LARCH_SUB8",
149             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SUB8));
150   EXPECT_EQ("R_LARCH_SUB16",
151             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SUB16));
152   EXPECT_EQ("R_LARCH_SUB24",
153             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SUB24));
154   EXPECT_EQ("R_LARCH_SUB32",
155             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SUB32));
156   EXPECT_EQ("R_LARCH_SUB64",
157             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_SUB64));
158   EXPECT_EQ("R_LARCH_GNU_VTINHERIT",
159             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_GNU_VTINHERIT));
160   EXPECT_EQ("R_LARCH_GNU_VTENTRY",
161             getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_GNU_VTENTRY));
162 }
163 
TEST(ELFTest,getELFRelativeRelocationType)164 TEST(ELFTest, getELFRelativeRelocationType) {
165   EXPECT_EQ(ELF::R_VE_RELATIVE, getELFRelativeRelocationType(EM_VE));
166 }
167 
168 // This is a test for the DataRegion helper struct, defined in ELF.h header.
TEST(ELFTest,DataRegionTest)169 TEST(ELFTest, DataRegionTest) {
170   std::vector<uint8_t> Data = {0, 1, 2};
171 
172   // Used to check that the operator[] works properly.
173   auto CheckOperator = [&](DataRegion<uint8_t> &R) {
174     for (size_t I = 0, E = Data.size(); I != E; ++I) {
175       Expected<uint8_t> ValOrErr = R[I];
176       ASSERT_THAT_EXPECTED(ValOrErr, Succeeded());
177       EXPECT_EQ(*ValOrErr, I);
178     }
179   };
180 
181   // Check we can use the constructor that takes an ArrayRef<T>.
182   DataRegion<uint8_t> Region(Data);
183 
184   CheckOperator(Region);
185   const char *ErrMsg1 =
186       "the index is greater than or equal to the number of entries (3)";
187   EXPECT_THAT_ERROR(Region[3].takeError(), FailedWithMessage(ErrMsg1));
188   EXPECT_THAT_ERROR(Region[4].takeError(), FailedWithMessage(ErrMsg1));
189 
190   // Check we can use the constructor that takes the data begin and the
191   // data end pointers.
192   Region = {Data.data(), Data.data() + Data.size()};
193 
194   CheckOperator(Region);
195   const char *ErrMsg2 = "can't read past the end of the file";
196   EXPECT_THAT_ERROR(Region[3].takeError(), FailedWithMessage(ErrMsg2));
197   EXPECT_THAT_ERROR(Region[4].takeError(), FailedWithMessage(ErrMsg2));
198 }
199