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Side by Side Diff: lib/Bitcode/NaCl/TestUtils/NaClBitcodeMungeUtils.cpp

Issue 1139673004: Harden writer of munged bitcode for fuzzing (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-llvm.git@master
Patch Set: Fix issues in last patch. Created 5 years, 7 months ago
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1 //===--- Bitcode/NaCl/TestUtils/NaClBitcodeMungeUtils.cpp - Munge Bitcode -===// 1 //===--- Bitcode/NaCl/TestUtils/NaClBitcodeMungeUtils.cpp - Munge Bitcode -===//
2 // 2 //
3 // The LLVM Compiler Infrastructure 3 // The LLVM Compiler Infrastructure
4 // 4 //
5 // This file is distributed under the University of Illinois Open Source 5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details. 6 // License. See LICENSE.TXT for details.
7 // 7 //
8 //===----------------------------------------------------------------------===// 8 //===----------------------------------------------------------------------===//
9 // 9 //
10 // Munge bitcode records utility class NaClMungedBitcode. 10 // Munge bitcode records utility class NaClMungedBitcode.
(...skipping 69 matching lines...) Expand 10 before | Expand all | Expand 10 after
80 std::unique_ptr<NaClBitcodeAbbrevRecord> 80 std::unique_ptr<NaClBitcodeAbbrevRecord>
81 Rcd(new NaClBitcodeAbbrevRecord()); 81 Rcd(new NaClBitcodeAbbrevRecord());
82 Rcd->read(Records, RecordsSize, RecordTerminator, Index); 82 Rcd->read(Records, RecordsSize, RecordTerminator, Index);
83 RecordList.push_back(std::move(Rcd)); 83 RecordList.push_back(std::move(Rcd));
84 } 84 }
85 } 85 }
86 86
87 } // end of namespace llvm 87 } // end of namespace llvm
88 88
89 void NaClBitcodeAbbrevRecord::print(raw_ostream &Out) const { 89 void NaClBitcodeAbbrevRecord::print(raw_ostream &Out) const {
90 NaClBitcodeRecordData::Print(Out << format("%8u", Abbrev) << ": "); 90 NaClBitcodeRecordData::Print(Out << Abbrev << ": ");
91 } 91 }
92 92
93 void NaClBitcodeAbbrevRecord::read(const uint64_t Vals[], size_t ValsSize, 93 void NaClBitcodeAbbrevRecord::read(const uint64_t Vals[], size_t ValsSize,
94 uint64_t Terminator, size_t &Index) { 94 uint64_t Terminator, size_t &Index) {
95 Abbrev = readAsType<unsigned>(Vals, ValsSize, Terminator, Index); 95 Abbrev = readAsType<unsigned>(Vals, ValsSize, Terminator, Index);
96 Code = readAsType<unsigned>(Vals, ValsSize, Terminator, Index); 96 Code = readAsType<unsigned>(Vals, ValsSize, Terminator, Index);
97 Values.clear(); 97 Values.clear();
98 while (Index < ValsSize) { 98 while (Index < ValsSize) {
99 uint64_t Value = Vals[Index++]; 99 uint64_t Value = Vals[Index++];
100 if (Value == Terminator) 100 if (Value == Terminator)
(...skipping 11 matching lines...) Expand all
112 } 112 }
113 113
114 void NaClMungedBitcode::print(raw_ostream &Out) const { 114 void NaClMungedBitcode::print(raw_ostream &Out) const {
115 size_t Indent = 0; 115 size_t Indent = 0;
116 for (const NaClBitcodeAbbrevRecord &Record : *this) { 116 for (const NaClBitcodeAbbrevRecord &Record : *this) {
117 if (Indent && Record.Code == naclbitc::BLK_CODE_EXIT) 117 if (Indent && Record.Code == naclbitc::BLK_CODE_EXIT)
118 --Indent; 118 --Indent;
119 for (size_t i = 0; i < Indent; ++i) { 119 for (size_t i = 0; i < Indent; ++i) {
120 Out << " "; 120 Out << " ";
121 } 121 }
122 // Blank fill to make abbreviation indices right align, and then
123 // print record.
124 uint32_t Cutoff = 9999999;
125 while (Record.Abbrev <= Cutoff && Cutoff) {
126 Out << " ";
127 Cutoff /= 10;
128 }
122 Out << Record << "\n"; 129 Out << Record << "\n";
123 if (Record.Code == naclbitc::BLK_CODE_ENTER) 130 if (Record.Code == naclbitc::BLK_CODE_ENTER)
124 ++Indent; 131 ++Indent;
125 } 132 }
126 } 133 }
127 134
128 NaClMungedBitcode::~NaClMungedBitcode() { 135 NaClMungedBitcode::~NaClMungedBitcode() {
129 removeEdits(); 136 removeEdits();
130 } 137 }
131 138
(...skipping 165 matching lines...) Expand 10 before | Expand all | Expand 10 after
297 case InAfterInsertions: 304 case InAfterInsertions:
298 if (InsertionsIter != InsertionsIterEnd) 305 if (InsertionsIter != InsertionsIterEnd)
299 return; 306 return;
300 Position = InBeforeInsertions; 307 Position = InBeforeInsertions;
301 ++Index; 308 ++Index;
302 placeAt(MungedBitcode->BeforeInsertionsMap, Index); 309 placeAt(MungedBitcode->BeforeInsertionsMap, Index);
303 break; 310 break;
304 } 311 }
305 } 312 }
306 } 313 }
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