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| 1 //===- subzero/src/IceELFObjectWriter.cpp - ELF object file writer --------===// | 1 //===- subzero/src/IceELFObjectWriter.cpp - ELF object file writer --------===// |
| 2 // | 2 // |
| 3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
| 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 /// \file | 10 /// \file |
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| 281 if (Var->getIsConstant()) | 281 if (Var->getIsConstant()) |
| 282 return ELFObjectWriter::ROData; | 282 return ELFObjectWriter::ROData; |
| 283 if (Var->hasNonzeroInitializer()) | 283 if (Var->hasNonzeroInitializer()) |
| 284 return ELFObjectWriter::Data; | 284 return ELFObjectWriter::Data; |
| 285 return ELFObjectWriter::BSS; | 285 return ELFObjectWriter::BSS; |
| 286 } | 286 } |
| 287 | 287 |
| 288 // Partition the Vars list by SectionType into VarsBySection. If TranslateOnly | 288 // Partition the Vars list by SectionType into VarsBySection. If TranslateOnly |
| 289 // is non-empty, then only the TranslateOnly variable is kept for emission. | 289 // is non-empty, then only the TranslateOnly variable is kept for emission. |
| 290 void partitionGlobalsBySection(const VariableDeclarationList &Vars, | 290 void partitionGlobalsBySection(const VariableDeclarationList &Vars, |
| 291 VariableDeclarationPartition VarsBySection[], | 291 VariableDeclarationPartition VarsBySection[]) { |
| 292 const std::string &TranslateOnly) { | |
| 293 for (VariableDeclaration *Var : Vars) { | 292 for (VariableDeclaration *Var : Vars) { |
| 294 if (GlobalContext::matchSymbolName(Var->getName(), TranslateOnly)) { | 293 if (getFlags().matchTranslateOnly(Var->getName(), 0)) { |
| 295 size_t Section = classifyGlobalSection(Var); | 294 size_t Section = classifyGlobalSection(Var); |
| 296 assert(Section < ELFObjectWriter::NumSectionTypes); | 295 assert(Section < ELFObjectWriter::NumSectionTypes); |
| 297 VarsBySection[Section].push_back(Var); | 296 VarsBySection[Section].push_back(Var); |
| 298 } | 297 } |
| 299 } | 298 } |
| 300 } | 299 } |
| 301 | 300 |
| 302 } // end of anonymous namespace | 301 } // end of anonymous namespace |
| 303 | 302 |
| 304 void ELFObjectWriter::writeDataSection(const VariableDeclarationList &Vars, | 303 void ELFObjectWriter::writeDataSection(const VariableDeclarationList &Vars, |
| 305 FixupKind RelocationKind, | 304 FixupKind RelocationKind, |
| 306 const std::string &SectionSuffix, | 305 const std::string &SectionSuffix, |
| 307 bool IsPIC) { | 306 bool IsPIC) { |
| 308 TimerMarker Timer(TimerStack::TT_writeELF, &Ctx); | 307 TimerMarker Timer(TimerStack::TT_writeELF, &Ctx); |
| 309 assert(!SectionNumbersAssigned); | 308 assert(!SectionNumbersAssigned); |
| 310 VariableDeclarationPartition VarsBySection[ELFObjectWriter::NumSectionTypes]; | 309 VariableDeclarationPartition VarsBySection[ELFObjectWriter::NumSectionTypes]; |
| 311 for (auto &SectionList : VarsBySection) | 310 for (auto &SectionList : VarsBySection) |
| 312 SectionList.reserve(Vars.size()); | 311 SectionList.reserve(Vars.size()); |
| 313 partitionGlobalsBySection(Vars, VarsBySection, getFlags().getTranslateOnly()); | 312 partitionGlobalsBySection(Vars, VarsBySection); |
| 314 size_t I = 0; | 313 size_t I = 0; |
| 315 for (auto &SectionList : VarsBySection) { | 314 for (auto &SectionList : VarsBySection) { |
| 316 writeDataOfType(static_cast<SectionType>(I++), SectionList, RelocationKind, | 315 writeDataOfType(static_cast<SectionType>(I++), SectionList, RelocationKind, |
| 317 SectionSuffix, IsPIC); | 316 SectionSuffix, IsPIC); |
| 318 } | 317 } |
| 319 } | 318 } |
| 320 | 319 |
| 321 namespace { | 320 namespace { |
| 322 std::string MangleSectionName(const char Base[], const std::string &Suffix) { | 321 std::string MangleSectionName(const char Base[], const std::string &Suffix) { |
| 323 if (Suffix.empty()) | 322 if (Suffix.empty()) |
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| 687 if (ELF64) { | 686 if (ELF64) { |
| 688 writeELFHeaderInternal<true>(ShOffset, ShStrTab->getNumber(), | 687 writeELFHeaderInternal<true>(ShOffset, ShStrTab->getNumber(), |
| 689 AllSections.size()); | 688 AllSections.size()); |
| 690 } else { | 689 } else { |
| 691 writeELFHeaderInternal<false>(ShOffset, ShStrTab->getNumber(), | 690 writeELFHeaderInternal<false>(ShOffset, ShStrTab->getNumber(), |
| 692 AllSections.size()); | 691 AllSections.size()); |
| 693 } | 692 } |
| 694 } | 693 } |
| 695 | 694 |
| 696 } // end of namespace Ice | 695 } // end of namespace Ice |
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