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
|
//===- bolt/tools/binary-analysis/binary-analysis.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
//
//===----------------------------------------------------------------------===//
//
// This is a generic binary analysis tool, where multiple different specific
// binary analyses can be plugged in to. The binary analyses are mostly built
// on top of BOLT components.
//
//===----------------------------------------------------------------------===//
#include "bolt/Rewrite/RewriteInstance.h"
#include "bolt/Utils/CommandLineOpts.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Object/Binary.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/VirtualFileSystem.h"
#define DEBUG_TYPE "bolt"
using namespace llvm;
using namespace object;
using namespace bolt;
namespace opts {
static cl::OptionCategory *BinaryAnalysisCategories[] = {
&BinaryAnalysisCategory};
static cl::opt<std::string> InputFilename(cl::Positional,
cl::desc("<executable>"),
cl::Required,
cl::cat(BinaryAnalysisCategory),
cl::sub(cl::SubCommand::getAll()));
} // namespace opts
static StringRef ToolName = "llvm-bolt-binary-analysis";
static void report_error(StringRef Message, std::error_code EC) {
assert(EC);
errs() << ToolName << ": '" << Message << "': " << EC.message() << ".\n";
exit(1);
}
static void report_error(StringRef Message, Error E) {
assert(E);
errs() << ToolName << ": '" << Message << "': " << toString(std::move(E))
<< ".\n";
exit(1);
}
void ParseCommandLine(int argc, char **argv) {
cl::HideUnrelatedOptions(ArrayRef(opts::BinaryAnalysisCategories));
// Register the target printer for --version.
cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
cl::ParseCommandLineOptions(argc, argv, "BinaryAnalysis\n");
}
static std::string GetExecutablePath(const char *Argv0) {
SmallString<256> ExecutablePath(Argv0);
// Do a PATH lookup if Argv0 isn't a valid path.
if (!llvm::sys::fs::exists(ExecutablePath))
if (llvm::ErrorOr<std::string> P =
llvm::sys::findProgramByName(ExecutablePath))
ExecutablePath = *P;
return std::string(ExecutablePath.str());
}
int main(int argc, char **argv) {
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal(argv[0]);
PrettyStackTraceProgram X(argc, argv);
std::string ToolPath = GetExecutablePath(argv[0]);
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
// Initialize targets and assembly printers/parsers.
#define BOLT_TARGET(target) \
LLVMInitialize##target##TargetInfo(); \
LLVMInitialize##target##TargetMC(); \
LLVMInitialize##target##AsmParser(); \
LLVMInitialize##target##Disassembler(); \
LLVMInitialize##target##Target(); \
LLVMInitialize##target##AsmPrinter();
#include "bolt/Core/TargetConfig.def"
ParseCommandLine(argc, argv);
opts::BinaryAnalysisMode = true;
if (!sys::fs::exists(opts::InputFilename))
report_error(opts::InputFilename, errc::no_such_file_or_directory);
Expected<OwningBinary<Binary>> BinaryOrErr =
createBinary(opts::InputFilename);
if (Error E = BinaryOrErr.takeError())
report_error(opts::InputFilename, std::move(E));
Binary &Binary = *BinaryOrErr.get().getBinary();
if (auto *e = dyn_cast<ELFObjectFileBase>(&Binary)) {
auto RIOrErr = RewriteInstance::create(e, argc, argv, ToolPath);
if (Error E = RIOrErr.takeError())
report_error(opts::InputFilename, std::move(E));
RewriteInstance &RI = *RIOrErr.get();
if (Error E = RI.run())
report_error(opts::InputFilename, std::move(E));
}
return EXIT_SUCCESS;
}
|
