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
|
//===- TestingSupport.cpp - Convert objects files into test files --------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
#include <functional>
#include <system_error>
using namespace llvm;
using namespace object;
int convertForTestingMain(int argc, const char *argv[]) {
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::opt<std::string> InputSourceFile(cl::Positional, cl::Required,
cl::desc("<Source file>"));
cl::opt<std::string> OutputFilename(
"o", cl::Required,
cl::desc(
"File with the profile data obtained after an instrumented run"));
cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
auto ObjErr = llvm::object::ObjectFile::createObjectFile(InputSourceFile);
if (auto Err = ObjErr.getError()) {
errs() << "error: " << Err.message() << "\n";
return 1;
}
ObjectFile *OF = ObjErr.get().getBinary();
auto BytesInAddress = OF->getBytesInAddress();
if (BytesInAddress != 8) {
errs() << "error: 64 bit binary expected\n";
return 1;
}
// Look for the sections that we are interested in.
int FoundSectionCount = 0;
SectionRef ProfileNames, CoverageMapping;
for (const auto &Section : OF->sections()) {
StringRef Name;
if (Section.getName(Name))
return 1;
if (Name == "__llvm_prf_names") {
ProfileNames = Section;
} else if (Name == "__llvm_covmap") {
CoverageMapping = Section;
} else
continue;
++FoundSectionCount;
}
if (FoundSectionCount != 2)
return 1;
// Get the contents of the given sections.
uint64_t ProfileNamesAddress = ProfileNames.getAddress();
StringRef CoverageMappingData;
StringRef ProfileNamesData;
if (CoverageMapping.getContents(CoverageMappingData) ||
ProfileNames.getContents(ProfileNamesData))
return 1;
int FD;
if (auto Err =
sys::fs::openFileForWrite(OutputFilename, FD, sys::fs::F_None)) {
errs() << "error: " << Err.message() << "\n";
return 1;
}
raw_fd_ostream OS(FD, true);
OS << "llvmcovmtestdata";
encodeULEB128(ProfileNamesData.size(), OS);
encodeULEB128(ProfileNamesAddress, OS);
OS << ProfileNamesData << CoverageMappingData;
return 0;
}
|
