1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
//===-- PDBFPOProgramToDWARFExpressionTests.cpp -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "Plugins/SymbolFile/NativePDB/PdbFPOProgramToDWARFExpression.h"
#include "lldb/Core/StreamBuffer.h"
#include "lldb/Expression/DWARFExpression.h"
#include "lldb/Utility/ArchSpec.h"
#include "lldb/Utility/DataBufferHeap.h"
#include "lldb/Utility/DataExtractor.h"
#include "lldb/Utility/StreamString.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::npdb;
/// Valid programs tests
static void
CheckValidProgramTranslation(llvm::StringRef fpo_program,
llvm::StringRef target_register_name,
llvm::StringRef expected_dwarf_expression) {
// initial setup
ArchSpec arch_spec("i686-pc-windows");
llvm::Triple::ArchType arch_type = arch_spec.GetMachine();
ByteOrder byte_order = arch_spec.GetByteOrder();
uint32_t address_size = arch_spec.GetAddressByteSize();
uint32_t byte_size = arch_spec.GetDataByteSize();
// program translation
StreamBuffer<32> stream(Stream::eBinary, address_size, byte_order);
ASSERT_TRUE(TranslateFPOProgramToDWARFExpression(
fpo_program, target_register_name, arch_type, stream));
// print dwarf expression to comparable textual representation
DataBufferSP buffer =
std::make_shared<DataBufferHeap>(stream.GetData(), stream.GetSize());
DataExtractor extractor(buffer, byte_order, address_size, byte_size);
StreamString result_dwarf_expression;
ASSERT_TRUE(DWARFExpression::PrintDWARFExpression(
result_dwarf_expression, extractor, address_size, 4, false));
// actual check
ASSERT_STREQ(expected_dwarf_expression.data(),
result_dwarf_expression.GetString().data());
}
TEST(PDBFPOProgramToDWARFExpressionTests, SingleAssignmentConst) {
CheckValidProgramTranslation("$T0 0 = ", "$T0", "DW_OP_constu 0x0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, SingleAssignmentRegisterRef) {
CheckValidProgramTranslation("$T0 $ebp = ", "$T0", "DW_OP_breg6 +0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, SingleAssignmentExpressionPlus) {
CheckValidProgramTranslation("$T0 $ebp 4 + = ", "$T0",
"DW_OP_breg6 +0, DW_OP_constu 0x4, DW_OP_plus ");
}
TEST(PDBFPOProgramToDWARFExpressionTests, SingleAssignmentExpressionDeref) {
CheckValidProgramTranslation("$T0 $ebp ^ = ", "$T0",
"DW_OP_breg6 +0, DW_OP_deref ");
}
TEST(PDBFPOProgramToDWARFExpressionTests, SingleAssignmentExpressionMinus) {
CheckValidProgramTranslation(
"$T0 $ebp 4 - = ", "$T0",
"DW_OP_breg6 +0, DW_OP_constu 0x4, DW_OP_minus ");
}
TEST(PDBFPOProgramToDWARFExpressionTests, SingleAssignmentExpressionAlign) {
CheckValidProgramTranslation("$T0 $ebp 128 @ = ", "$T0",
"DW_OP_breg6 +0, DW_OP_constu 0x80, DW_OP_lit1 "
", DW_OP_minus , DW_OP_not , DW_OP_and ");
}
TEST(PDBFPOProgramToDWARFExpressionTests, MultipleIndependentAssignments) {
CheckValidProgramTranslation("$T1 1 = $T0 0 =", "$T0", "DW_OP_constu 0x0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, MultipleDependentAssignments) {
CheckValidProgramTranslation(
"$T1 $ebp 4 + = $T0 $T1 8 - 128 @ = ", "$T0",
"DW_OP_breg6 +0, DW_OP_constu 0x4, DW_OP_plus , DW_OP_constu 0x8, "
"DW_OP_minus , DW_OP_constu 0x80, DW_OP_lit1 , DW_OP_minus , DW_OP_not , "
"DW_OP_and ");
}
TEST(PDBFPOProgramToDWARFExpressionTests, DependencyChain) {
CheckValidProgramTranslation("$T1 0 = $T0 $T1 = $ebp $T0 =", "$ebp",
"DW_OP_constu 0x0");
}
/// Invalid programs tests
static void
CheckInvalidProgramTranslation(llvm::StringRef fpo_program,
llvm::StringRef target_register_name) {
// initial setup
ArchSpec arch_spec("i686-pc-windows");
llvm::Triple::ArchType arch_type = arch_spec.GetMachine();
ByteOrder byte_order = arch_spec.GetByteOrder();
uint32_t address_size = arch_spec.GetAddressByteSize();
// program translation
StreamBuffer<32> stream(Stream::eBinary, address_size, byte_order);
EXPECT_FALSE(TranslateFPOProgramToDWARFExpression(
fpo_program, target_register_name, arch_type, stream));
EXPECT_EQ((size_t)0, stream.GetSize());
}
TEST(PDBFPOProgramToDWARFExpressionTests, InvalidAssignmentSingle) {
CheckInvalidProgramTranslation("$T0 0", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, InvalidAssignmentMultiple) {
CheckInvalidProgramTranslation("$T1 0 = $T0 0", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, UnknownOp) {
CheckInvalidProgramTranslation("$T0 $ebp 0 & = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, InvalidOpBinary) {
CheckInvalidProgramTranslation("$T0 0 + = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, InvalidOpUnary) {
CheckInvalidProgramTranslation("$T0 ^ = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, MissingTargetRegister) {
CheckInvalidProgramTranslation("$T1 0 = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests, UnresolvedRegisterReference) {
CheckInvalidProgramTranslation("$T0 $abc = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests,
UnresolvedRegisterAssignmentReference) {
CheckInvalidProgramTranslation("$T2 0 = $T0 $T1 = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests,
UnresolvedCyclicRegisterAssignmentReference) {
CheckInvalidProgramTranslation("$T1 $T0 = $T0 $T1 = ", "$T0");
}
TEST(PDBFPOProgramToDWARFExpressionTests,
UnresolvedDependentCyclicRegisterAssignmentReference) {
CheckInvalidProgramTranslation("$T1 $T0 = $T0 $T1 = $T2 $T1 =", "$T2");
}
TEST(PDBFPOProgramToDWARFExpressionTests, UnsupportedRASearch) {
CheckInvalidProgramTranslation("$T0 .raSearch = ", "$T0");
}
|
