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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 // This file defines the writer for ELF relocatable object files. | 10 // This file defines the writer for ELF relocatable object files. |
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289 } | 289 } |
290 | 290 |
291 } // end of anonymous namespace | 291 } // end of anonymous namespace |
292 | 292 |
293 void ELFObjectWriter::writeDataSection(const VariableDeclarationList &Vars, | 293 void ELFObjectWriter::writeDataSection(const VariableDeclarationList &Vars, |
294 FixupKind RelocationKind) { | 294 FixupKind RelocationKind) { |
295 assert(!SectionNumbersAssigned); | 295 assert(!SectionNumbersAssigned); |
296 VariableDeclarationList VarsBySection[ELFObjectWriter::NumSectionTypes]; | 296 VariableDeclarationList VarsBySection[ELFObjectWriter::NumSectionTypes]; |
297 for (auto &SectionList : VarsBySection) | 297 for (auto &SectionList : VarsBySection) |
298 SectionList.reserve(Vars.size()); | 298 SectionList.reserve(Vars.size()); |
299 partitionGlobalsBySection(Vars, VarsBySection, Ctx.getFlags().TranslateOnly); | 299 partitionGlobalsBySection(Vars, VarsBySection, |
| 300 Ctx.getFlags().getTranslateOnly()); |
300 bool IsELF64 = isELF64(Ctx.getTargetArch()); | 301 bool IsELF64 = isELF64(Ctx.getTargetArch()); |
301 size_t I = 0; | 302 size_t I = 0; |
302 for (auto &SectionList : VarsBySection) { | 303 for (auto &SectionList : VarsBySection) { |
303 writeDataOfType(static_cast<SectionType>(I++), SectionList, RelocationKind, | 304 writeDataOfType(static_cast<SectionType>(I++), SectionList, RelocationKind, |
304 IsELF64); | 305 IsELF64); |
305 } | 306 } |
306 } | 307 } |
307 | 308 |
308 void ELFObjectWriter::writeDataOfType(SectionType ST, | 309 void ELFObjectWriter::writeDataOfType(SectionType ST, |
309 const VariableDeclarationList &Vars, | 310 const VariableDeclarationList &Vars, |
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364 | 365 |
365 const uint8_t SymbolType = STT_OBJECT; | 366 const uint8_t SymbolType = STT_OBJECT; |
366 for (VariableDeclaration *Var : Vars) { | 367 for (VariableDeclaration *Var : Vars) { |
367 // If the variable declaration does not have an initializer, its symtab | 368 // If the variable declaration does not have an initializer, its symtab |
368 // entry will be created separately. | 369 // entry will be created separately. |
369 if (!Var->hasInitializer()) | 370 if (!Var->hasInitializer()) |
370 continue; | 371 continue; |
371 Elf64_Xword Align = Var->getAlignment(); | 372 Elf64_Xword Align = Var->getAlignment(); |
372 Section->padToAlignment(Str, Align); | 373 Section->padToAlignment(Str, Align); |
373 SizeT SymbolSize = Var->getNumBytes(); | 374 SizeT SymbolSize = Var->getNumBytes(); |
374 bool IsExternal = Var->isExternal() || Ctx.getFlags().DisableInternal; | 375 bool IsExternal = Var->isExternal() || Ctx.getFlags().getDisableInternal(); |
375 const uint8_t SymbolBinding = IsExternal ? STB_GLOBAL : STB_LOCAL; | 376 const uint8_t SymbolBinding = IsExternal ? STB_GLOBAL : STB_LOCAL; |
376 IceString MangledName = Var->mangleName(&Ctx); | 377 IceString MangledName = Var->mangleName(&Ctx); |
377 SymTab->createDefinedSym(MangledName, SymbolType, SymbolBinding, Section, | 378 SymTab->createDefinedSym(MangledName, SymbolType, SymbolBinding, Section, |
378 Section->getCurrentSize(), SymbolSize); | 379 Section->getCurrentSize(), SymbolSize); |
379 StrTab->add(MangledName); | 380 StrTab->add(MangledName); |
380 if (!Var->hasNonzeroInitializer()) { | 381 if (!Var->hasNonzeroInitializer()) { |
381 assert(ST == BSS || ST == ROData); | 382 assert(ST == BSS || ST == ROData); |
382 if (ST == ROData) | 383 if (ST == ROData) |
383 Section->appendZeros(Str, SymbolSize); | 384 Section->appendZeros(Str, SymbolSize); |
384 else | 385 else |
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608 if (IsELF64) { | 609 if (IsELF64) { |
609 writeELFHeaderInternal<true>(ShOffset, ShStrTab->getNumber(), | 610 writeELFHeaderInternal<true>(ShOffset, ShStrTab->getNumber(), |
610 AllSections.size()); | 611 AllSections.size()); |
611 } else { | 612 } else { |
612 writeELFHeaderInternal<false>(ShOffset, ShStrTab->getNumber(), | 613 writeELFHeaderInternal<false>(ShOffset, ShStrTab->getNumber(), |
613 AllSections.size()); | 614 AllSections.size()); |
614 } | 615 } |
615 } | 616 } |
616 | 617 |
617 } // end of namespace Ice | 618 } // end of namespace Ice |
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