| //===-- MCObjectFileInfo.cpp - Object File Information --------------------===// | |
| // | |
| // 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 | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #include "llvm/MC/MCObjectFileInfo.h" | |
| #include "llvm/ADT/StringExtras.h" | |
| #include "llvm/ADT/Triple.h" | |
| #include "llvm/BinaryFormat/COFF.h" | |
| #include "llvm/BinaryFormat/ELF.h" | |
| #include "llvm/BinaryFormat/Wasm.h" | |
| #include "llvm/MC/MCAsmInfo.h" | |
| #include "llvm/MC/MCContext.h" | |
| #include "llvm/MC/MCSection.h" | |
| #include "llvm/MC/MCSectionCOFF.h" | |
| #include "llvm/MC/MCSectionDXContainer.h" | |
| #include "llvm/MC/MCSectionELF.h" | |
| #include "llvm/MC/MCSectionGOFF.h" | |
| #include "llvm/MC/MCSectionMachO.h" | |
| #include "llvm/MC/MCSectionSPIRV.h" | |
| #include "llvm/MC/MCSectionWasm.h" | |
| #include "llvm/MC/MCSectionXCOFF.h" | |
| #include "llvm/Support/Casting.h" | |
| using namespace llvm; | |
| static bool useCompactUnwind(const Triple &T) { | |
| // Only on darwin. | |
| if (!T.isOSDarwin()) | |
| return false; | |
| // aarch64 always has it. | |
| if (T.getArch() == Triple::aarch64 || T.getArch() == Triple::aarch64_32) | |
| return true; | |
| // armv7k always has it. | |
| if (T.isWatchABI()) | |
| return true; | |
| // Use it on newer version of OS X. | |
| if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) | |
| return true; | |
| // And the iOS simulator. | |
| if (T.isiOS() && T.isX86()) | |
| return true; | |
| return false; | |
| } | |
| void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) { | |
| // MachO | |
| SupportsWeakOmittedEHFrame = false; | |
| EHFrameSection = Ctx->getMachOSection( | |
| "__TEXT", "__eh_frame", | |
| MachO::S_COALESCED | MachO::S_ATTR_NO_TOC | | |
| MachO::S_ATTR_STRIP_STATIC_SYMS | MachO::S_ATTR_LIVE_SUPPORT, | |
| SectionKind::getReadOnly()); | |
| if (T.isOSDarwin() && | |
| (T.getArch() == Triple::aarch64 || T.getArch() == Triple::aarch64_32)) | |
| SupportsCompactUnwindWithoutEHFrame = true; | |
| switch (Ctx->emitDwarfUnwindInfo()) { | |
| case EmitDwarfUnwindType::Always: | |
| OmitDwarfIfHaveCompactUnwind = false; | |
| break; | |
| case EmitDwarfUnwindType::NoCompactUnwind: | |
| OmitDwarfIfHaveCompactUnwind = true; | |
| break; | |
| case EmitDwarfUnwindType::Default: | |
| OmitDwarfIfHaveCompactUnwind = | |
| T.isWatchABI() || SupportsCompactUnwindWithoutEHFrame; | |
| break; | |
| } | |
| FDECFIEncoding = dwarf::DW_EH_PE_pcrel; | |
| TextSection // .text | |
| = Ctx->getMachOSection("__TEXT", "__text", | |
| MachO::S_ATTR_PURE_INSTRUCTIONS, | |
| SectionKind::getText()); | |
| DataSection // .data | |
| = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getData()); | |
| // BSSSection might not be expected initialized on msvc. | |
| BSSSection = nullptr; | |
| TLSDataSection // .tdata | |
| = Ctx->getMachOSection("__DATA", "__thread_data", | |
| MachO::S_THREAD_LOCAL_REGULAR, | |
| SectionKind::getData()); | |
| TLSBSSSection // .tbss | |
| = Ctx->getMachOSection("__DATA", "__thread_bss", | |
| MachO::S_THREAD_LOCAL_ZEROFILL, | |
| SectionKind::getThreadBSS()); | |
| // TODO: Verify datarel below. | |
| TLSTLVSection // .tlv | |
| = Ctx->getMachOSection("__DATA", "__thread_vars", | |
| MachO::S_THREAD_LOCAL_VARIABLES, | |
| SectionKind::getData()); | |
| TLSThreadInitSection = Ctx->getMachOSection( | |
| "__DATA", "__thread_init", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, | |
| SectionKind::getData()); | |
| CStringSection // .cstring | |
| = Ctx->getMachOSection("__TEXT", "__cstring", | |
| MachO::S_CSTRING_LITERALS, | |
| SectionKind::getMergeable1ByteCString()); | |
| UStringSection | |
| = Ctx->getMachOSection("__TEXT","__ustring", 0, | |
| SectionKind::getMergeable2ByteCString()); | |
| FourByteConstantSection // .literal4 | |
| = Ctx->getMachOSection("__TEXT", "__literal4", | |
| MachO::S_4BYTE_LITERALS, | |
| SectionKind::getMergeableConst4()); | |
| EightByteConstantSection // .literal8 | |
| = Ctx->getMachOSection("__TEXT", "__literal8", | |
| MachO::S_8BYTE_LITERALS, | |
| SectionKind::getMergeableConst8()); | |
| SixteenByteConstantSection // .literal16 | |
| = Ctx->getMachOSection("__TEXT", "__literal16", | |
| MachO::S_16BYTE_LITERALS, | |
| SectionKind::getMergeableConst16()); | |
| ReadOnlySection // .const | |
| = Ctx->getMachOSection("__TEXT", "__const", 0, | |
| SectionKind::getReadOnly()); | |
| // If the target is not powerpc, map the coal sections to the non-coal | |
| // sections. | |
| // | |
| // "__TEXT/__textcoal_nt" => section "__TEXT/__text" | |
| // "__TEXT/__const_coal" => section "__TEXT/__const" | |
| // "__DATA/__datacoal_nt" => section "__DATA/__data" | |
| Triple::ArchType ArchTy = T.getArch(); | |
| ConstDataSection // .const_data | |
| = Ctx->getMachOSection("__DATA", "__const", 0, | |
| SectionKind::getReadOnlyWithRel()); | |
| if (ArchTy == Triple::ppc || ArchTy == Triple::ppc64) { | |
| TextCoalSection | |
| = Ctx->getMachOSection("__TEXT", "__textcoal_nt", | |
| MachO::S_COALESCED | | |
| MachO::S_ATTR_PURE_INSTRUCTIONS, | |
| SectionKind::getText()); | |
| ConstTextCoalSection | |
| = Ctx->getMachOSection("__TEXT", "__const_coal", | |
| MachO::S_COALESCED, | |
| SectionKind::getReadOnly()); | |
| DataCoalSection = Ctx->getMachOSection( | |
| "__DATA", "__datacoal_nt", MachO::S_COALESCED, SectionKind::getData()); | |
| ConstDataCoalSection = DataCoalSection; | |
| } else { | |
| TextCoalSection = TextSection; | |
| ConstTextCoalSection = ReadOnlySection; | |
| DataCoalSection = DataSection; | |
| ConstDataCoalSection = ConstDataSection; | |
| } | |
| DataCommonSection | |
| = Ctx->getMachOSection("__DATA","__common", | |
| MachO::S_ZEROFILL, | |
| SectionKind::getBSS()); | |
| DataBSSSection | |
| = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL, | |
| SectionKind::getBSS()); | |
| LazySymbolPointerSection | |
| = Ctx->getMachOSection("__DATA", "__la_symbol_ptr", | |
| MachO::S_LAZY_SYMBOL_POINTERS, | |
| SectionKind::getMetadata()); | |
| NonLazySymbolPointerSection | |
| = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr", | |
| MachO::S_NON_LAZY_SYMBOL_POINTERS, | |
| SectionKind::getMetadata()); | |
| ThreadLocalPointerSection | |
| = Ctx->getMachOSection("__DATA", "__thread_ptr", | |
| MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, | |
| SectionKind::getMetadata()); | |
| AddrSigSection = Ctx->getMachOSection("__DATA", "__llvm_addrsig", 0, | |
| SectionKind::getData()); | |
| // Exception Handling. | |
| LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0, | |
| SectionKind::getReadOnlyWithRel()); | |
| COFFDebugSymbolsSection = nullptr; | |
| COFFDebugTypesSection = nullptr; | |
| COFFGlobalTypeHashesSection = nullptr; | |
| if (useCompactUnwind(T)) { | |
| CompactUnwindSection = | |
| Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG, | |
| SectionKind::getReadOnly()); | |
| if (T.isX86()) | |
| CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF | |
| else if (T.getArch() == Triple::aarch64 || T.getArch() == Triple::aarch64_32) | |
| CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF | |
| else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb) | |
| CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF | |
| } | |
| // Debug Information. | |
| DwarfDebugNamesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_names", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "debug_names_begin"); | |
| DwarfAccelNamesSection = | |
| Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "names_begin"); | |
| DwarfAccelObjCSection = | |
| Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "objc_begin"); | |
| // 16 character section limit... | |
| DwarfAccelNamespaceSection = | |
| Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "namespac_begin"); | |
| DwarfAccelTypesSection = | |
| Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "types_begin"); | |
| DwarfSwiftASTSection = | |
| Ctx->getMachOSection("__DWARF", "__swift_ast", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfAbbrevSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_abbrev"); | |
| DwarfInfoSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_info"); | |
| DwarfLineSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_line"); | |
| DwarfLineStrSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_line_str", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_line_str"); | |
| DwarfFrameSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfPubNamesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfPubTypesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfGnuPubNamesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfGnuPubTypesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfStrSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "info_string"); | |
| DwarfStrOffSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_str_offs", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_str_off"); | |
| DwarfAddrSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_addr", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_info"); | |
| DwarfLocSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_debug_loc"); | |
| DwarfLoclistsSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_loclists", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "section_debug_loc"); | |
| DwarfARangesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfRangesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "debug_range"); | |
| DwarfRnglistsSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_rnglists", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "debug_range"); | |
| DwarfMacinfoSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "debug_macinfo"); | |
| DwarfMacroSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_macro", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata(), "debug_macro"); | |
| DwarfDebugInlineSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfCUIndexSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_cu_index", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfTUIndexSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_tu_index", MachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", | |
| 0, SectionKind::getMetadata()); | |
| FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps", | |
| 0, SectionKind::getMetadata()); | |
| RemarksSection = Ctx->getMachOSection( | |
| "__LLVM", "__remarks", MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); | |
| // The architecture of dsymutil makes it very difficult to copy the Swift | |
| // reflection metadata sections into the __TEXT segment, so dsymutil creates | |
| // these sections in the __DWARF segment instead. | |
| if (!Ctx->getSwift5ReflectionSegmentName().empty()) { | |
| #define HANDLE_SWIFT_SECTION(KIND, MACHO, ELF, COFF) \ | |
| Swift5ReflectionSections \ | |
| [llvm::binaryformat::Swift5ReflectionSectionKind::KIND] = \ | |
| Ctx->getMachOSection(Ctx->getSwift5ReflectionSegmentName().data(), \ | |
| MACHO, 0, SectionKind::getMetadata()); | |
| #include "llvm/BinaryFormat/Swift.def" | |
| } | |
| TLSExtraDataSection = TLSTLVSection; | |
| } | |
| void MCObjectFileInfo::initELFMCObjectFileInfo(const Triple &T, bool Large) { | |
| switch (T.getArch()) { | |
| case Triple::mips: | |
| case Triple::mipsel: | |
| case Triple::mips64: | |
| case Triple::mips64el: | |
| // We cannot use DW_EH_PE_sdata8 for the large PositionIndependent case | |
| // since there is no R_MIPS_PC64 relocation (only a 32-bit version). | |
| if (PositionIndependent && !Large) | |
| FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; | |
| else | |
| FDECFIEncoding = Ctx->getAsmInfo()->getCodePointerSize() == 4 | |
| ? dwarf::DW_EH_PE_sdata4 | |
| : dwarf::DW_EH_PE_sdata8; | |
| break; | |
| case Triple::ppc64: | |
| case Triple::ppc64le: | |
| case Triple::aarch64: | |
| case Triple::aarch64_be: | |
| case Triple::x86_64: | |
| FDECFIEncoding = dwarf::DW_EH_PE_pcrel | | |
| (Large ? dwarf::DW_EH_PE_sdata8 : dwarf::DW_EH_PE_sdata4); | |
| break; | |
| case Triple::bpfel: | |
| case Triple::bpfeb: | |
| FDECFIEncoding = dwarf::DW_EH_PE_sdata8; | |
| break; | |
| case Triple::hexagon: | |
| FDECFIEncoding = | |
| PositionIndependent ? dwarf::DW_EH_PE_pcrel : dwarf::DW_EH_PE_absptr; | |
| break; | |
| case Triple::xtensa: | |
| FDECFIEncoding = dwarf::DW_EH_PE_sdata4; | |
| break; | |
| default: | |
| FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; | |
| break; | |
| } | |
| unsigned EHSectionType = T.getArch() == Triple::x86_64 | |
| ? ELF::SHT_X86_64_UNWIND | |
| : ELF::SHT_PROGBITS; | |
| // Solaris requires different flags for .eh_frame to seemingly every other | |
| // platform. | |
| unsigned EHSectionFlags = ELF::SHF_ALLOC; | |
| if (T.isOSSolaris() && T.getArch() != Triple::x86_64) | |
| EHSectionFlags |= ELF::SHF_WRITE; | |
| // ELF | |
| BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS, | |
| ELF::SHF_WRITE | ELF::SHF_ALLOC); | |
| TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS, | |
| ELF::SHF_EXECINSTR | ELF::SHF_ALLOC); | |
| DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS, | |
| ELF::SHF_WRITE | ELF::SHF_ALLOC); | |
| ReadOnlySection = | |
| Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC); | |
| TLSDataSection = | |
| Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE); | |
| TLSBSSSection = Ctx->getELFSection( | |
| ".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE); | |
| DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_WRITE); | |
| MergeableConst4Section = | |
| Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_MERGE, 4); | |
| MergeableConst8Section = | |
| Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_MERGE, 8); | |
| MergeableConst16Section = | |
| Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_MERGE, 16); | |
| MergeableConst32Section = | |
| Ctx->getELFSection(".rodata.cst32", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_MERGE, 32); | |
| // Exception Handling Sections. | |
| // FIXME: We're emitting LSDA info into a readonly section on ELF, even though | |
| // it contains relocatable pointers. In PIC mode, this is probably a big | |
| // runtime hit for C++ apps. Either the contents of the LSDA need to be | |
| // adjusted or this should be a data section. | |
| LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC); | |
| COFFDebugSymbolsSection = nullptr; | |
| COFFDebugTypesSection = nullptr; | |
| unsigned DebugSecType = ELF::SHT_PROGBITS; | |
| // MIPS .debug_* sections should have SHT_MIPS_DWARF section type | |
| // to distinguish among sections contain DWARF and ECOFF debug formats. | |
| // Sections with ECOFF debug format are obsoleted and marked by SHT_PROGBITS. | |
| if (T.isMIPS()) | |
| DebugSecType = ELF::SHT_MIPS_DWARF; | |
| // Debug Info Sections. | |
| DwarfAbbrevSection = | |
| Ctx->getELFSection(".debug_abbrev", DebugSecType, 0); | |
| DwarfInfoSection = Ctx->getELFSection(".debug_info", DebugSecType, 0); | |
| DwarfLineSection = Ctx->getELFSection(".debug_line", DebugSecType, 0); | |
| DwarfLineStrSection = | |
| Ctx->getELFSection(".debug_line_str", DebugSecType, | |
| ELF::SHF_MERGE | ELF::SHF_STRINGS, 1); | |
| DwarfFrameSection = Ctx->getELFSection(".debug_frame", DebugSecType, 0); | |
| DwarfPubNamesSection = | |
| Ctx->getELFSection(".debug_pubnames", DebugSecType, 0); | |
| DwarfPubTypesSection = | |
| Ctx->getELFSection(".debug_pubtypes", DebugSecType, 0); | |
| DwarfGnuPubNamesSection = | |
| Ctx->getELFSection(".debug_gnu_pubnames", DebugSecType, 0); | |
| DwarfGnuPubTypesSection = | |
| Ctx->getELFSection(".debug_gnu_pubtypes", DebugSecType, 0); | |
| DwarfStrSection = | |
| Ctx->getELFSection(".debug_str", DebugSecType, | |
| ELF::SHF_MERGE | ELF::SHF_STRINGS, 1); | |
| DwarfLocSection = Ctx->getELFSection(".debug_loc", DebugSecType, 0); | |
| DwarfARangesSection = | |
| Ctx->getELFSection(".debug_aranges", DebugSecType, 0); | |
| DwarfRangesSection = | |
| Ctx->getELFSection(".debug_ranges", DebugSecType, 0); | |
| DwarfMacinfoSection = | |
| Ctx->getELFSection(".debug_macinfo", DebugSecType, 0); | |
| DwarfMacroSection = Ctx->getELFSection(".debug_macro", DebugSecType, 0); | |
| // DWARF5 Experimental Debug Info | |
| // Accelerator Tables | |
| DwarfDebugNamesSection = | |
| Ctx->getELFSection(".debug_names", ELF::SHT_PROGBITS, 0); | |
| DwarfAccelNamesSection = | |
| Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0); | |
| DwarfAccelObjCSection = | |
| Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0); | |
| DwarfAccelNamespaceSection = | |
| Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0); | |
| DwarfAccelTypesSection = | |
| Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0); | |
| // String Offset and Address Sections | |
| DwarfStrOffSection = | |
| Ctx->getELFSection(".debug_str_offsets", DebugSecType, 0); | |
| DwarfAddrSection = Ctx->getELFSection(".debug_addr", DebugSecType, 0); | |
| DwarfRnglistsSection = Ctx->getELFSection(".debug_rnglists", DebugSecType, 0); | |
| DwarfLoclistsSection = Ctx->getELFSection(".debug_loclists", DebugSecType, 0); | |
| // Fission Sections | |
| DwarfInfoDWOSection = | |
| Ctx->getELFSection(".debug_info.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfTypesDWOSection = | |
| Ctx->getELFSection(".debug_types.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfAbbrevDWOSection = | |
| Ctx->getELFSection(".debug_abbrev.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfStrDWOSection = Ctx->getELFSection( | |
| ".debug_str.dwo", DebugSecType, | |
| ELF::SHF_MERGE | ELF::SHF_STRINGS | ELF::SHF_EXCLUDE, 1); | |
| DwarfLineDWOSection = | |
| Ctx->getELFSection(".debug_line.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfLocDWOSection = | |
| Ctx->getELFSection(".debug_loc.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfStrOffDWOSection = Ctx->getELFSection(".debug_str_offsets.dwo", | |
| DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfRnglistsDWOSection = | |
| Ctx->getELFSection(".debug_rnglists.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfMacinfoDWOSection = | |
| Ctx->getELFSection(".debug_macinfo.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfMacroDWOSection = | |
| Ctx->getELFSection(".debug_macro.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| DwarfLoclistsDWOSection = | |
| Ctx->getELFSection(".debug_loclists.dwo", DebugSecType, ELF::SHF_EXCLUDE); | |
| // DWP Sections | |
| DwarfCUIndexSection = | |
| Ctx->getELFSection(".debug_cu_index", DebugSecType, 0); | |
| DwarfTUIndexSection = | |
| Ctx->getELFSection(".debug_tu_index", DebugSecType, 0); | |
| StackMapSection = | |
| Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC); | |
| FaultMapSection = | |
| Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC); | |
| EHFrameSection = | |
| Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags); | |
| StackSizesSection = Ctx->getELFSection(".stack_sizes", ELF::SHT_PROGBITS, 0); | |
| PseudoProbeSection = Ctx->getELFSection(".pseudo_probe", DebugSecType, 0); | |
| PseudoProbeDescSection = | |
| Ctx->getELFSection(".pseudo_probe_desc", DebugSecType, 0); | |
| LLVMStatsSection = Ctx->getELFSection(".llvm_stats", ELF::SHT_PROGBITS, 0); | |
| } | |
| void MCObjectFileInfo::initGOFFMCObjectFileInfo(const Triple &T) { | |
| TextSection = | |
| Ctx->getGOFFSection(".text", SectionKind::getText(), nullptr, nullptr); | |
| BSSSection = | |
| Ctx->getGOFFSection(".bss", SectionKind::getBSS(), nullptr, nullptr); | |
| PPA1Section = | |
| Ctx->getGOFFSection(".ppa1", SectionKind::getMetadata(), TextSection, | |
| MCConstantExpr::create(GOFF::SK_PPA1, *Ctx)); | |
| } | |
| void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) { | |
| EHFrameSection = | |
| Ctx->getCOFFSection(".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getData()); | |
| // Set the `IMAGE_SCN_MEM_16BIT` flag when compiling for thumb mode. This is | |
| // used to indicate to the linker that the text segment contains thumb instructions | |
| // and to set the ISA selection bit for calls accordingly. | |
| const bool IsThumb = T.getArch() == Triple::thumb; | |
| // COFF | |
| BSSSection = Ctx->getCOFFSection( | |
| ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getBSS()); | |
| TextSection = Ctx->getCOFFSection( | |
| ".text", | |
| (IsThumb ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) | | |
| COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getText()); | |
| DataSection = Ctx->getCOFFSection( | |
| ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getData()); | |
| ReadOnlySection = Ctx->getCOFFSection( | |
| ".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getReadOnly()); | |
| if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::aarch64 || | |
| T.getArch() == Triple::arm || T.getArch() == Triple::thumb) { | |
| // On Windows with SEH, the LSDA is emitted into the .xdata section | |
| LSDASection = nullptr; | |
| } else { | |
| LSDASection = Ctx->getCOFFSection(".gcc_except_table", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getReadOnly()); | |
| } | |
| // Debug info. | |
| COFFDebugSymbolsSection = | |
| Ctx->getCOFFSection(".debug$S", (COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ), | |
| SectionKind::getMetadata()); | |
| COFFDebugTypesSection = | |
| Ctx->getCOFFSection(".debug$T", (COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ), | |
| SectionKind::getMetadata()); | |
| COFFGlobalTypeHashesSection = Ctx->getCOFFSection( | |
| ".debug$H", | |
| (COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ), | |
| SectionKind::getMetadata()); | |
| DwarfAbbrevSection = Ctx->getCOFFSection( | |
| ".debug_abbrev", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_abbrev"); | |
| DwarfInfoSection = Ctx->getCOFFSection( | |
| ".debug_info", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_info"); | |
| DwarfLineSection = Ctx->getCOFFSection( | |
| ".debug_line", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_line"); | |
| DwarfLineStrSection = Ctx->getCOFFSection( | |
| ".debug_line_str", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_line_str"); | |
| DwarfFrameSection = Ctx->getCOFFSection( | |
| ".debug_frame", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfPubNamesSection = Ctx->getCOFFSection( | |
| ".debug_pubnames", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfPubTypesSection = Ctx->getCOFFSection( | |
| ".debug_pubtypes", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfGnuPubNamesSection = Ctx->getCOFFSection( | |
| ".debug_gnu_pubnames", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfGnuPubTypesSection = Ctx->getCOFFSection( | |
| ".debug_gnu_pubtypes", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfStrSection = Ctx->getCOFFSection( | |
| ".debug_str", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "info_string"); | |
| DwarfStrOffSection = Ctx->getCOFFSection( | |
| ".debug_str_offsets", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_str_off"); | |
| DwarfLocSection = Ctx->getCOFFSection( | |
| ".debug_loc", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_debug_loc"); | |
| DwarfLoclistsSection = Ctx->getCOFFSection( | |
| ".debug_loclists", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_debug_loclists"); | |
| DwarfARangesSection = Ctx->getCOFFSection( | |
| ".debug_aranges", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfRangesSection = Ctx->getCOFFSection( | |
| ".debug_ranges", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_range"); | |
| DwarfRnglistsSection = Ctx->getCOFFSection( | |
| ".debug_rnglists", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_rnglists"); | |
| DwarfMacinfoSection = Ctx->getCOFFSection( | |
| ".debug_macinfo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_macinfo"); | |
| DwarfMacroSection = Ctx->getCOFFSection( | |
| ".debug_macro", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_macro"); | |
| DwarfMacinfoDWOSection = Ctx->getCOFFSection( | |
| ".debug_macinfo.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_macinfo.dwo"); | |
| DwarfMacroDWOSection = Ctx->getCOFFSection( | |
| ".debug_macro.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_macro.dwo"); | |
| DwarfInfoDWOSection = Ctx->getCOFFSection( | |
| ".debug_info.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_info_dwo"); | |
| DwarfTypesDWOSection = Ctx->getCOFFSection( | |
| ".debug_types.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_types_dwo"); | |
| DwarfAbbrevDWOSection = Ctx->getCOFFSection( | |
| ".debug_abbrev.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_abbrev_dwo"); | |
| DwarfStrDWOSection = Ctx->getCOFFSection( | |
| ".debug_str.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "skel_string"); | |
| DwarfLineDWOSection = Ctx->getCOFFSection( | |
| ".debug_line.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfLocDWOSection = Ctx->getCOFFSection( | |
| ".debug_loc.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "skel_loc"); | |
| DwarfStrOffDWOSection = Ctx->getCOFFSection( | |
| ".debug_str_offsets.dwo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "section_str_off_dwo"); | |
| DwarfAddrSection = Ctx->getCOFFSection( | |
| ".debug_addr", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "addr_sec"); | |
| DwarfCUIndexSection = Ctx->getCOFFSection( | |
| ".debug_cu_index", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfTUIndexSection = Ctx->getCOFFSection( | |
| ".debug_tu_index", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfDebugNamesSection = Ctx->getCOFFSection( | |
| ".debug_names", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "debug_names_begin"); | |
| DwarfAccelNamesSection = Ctx->getCOFFSection( | |
| ".apple_names", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "names_begin"); | |
| DwarfAccelNamespaceSection = Ctx->getCOFFSection( | |
| ".apple_namespaces", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "namespac_begin"); | |
| DwarfAccelTypesSection = Ctx->getCOFFSection( | |
| ".apple_types", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "types_begin"); | |
| DwarfAccelObjCSection = Ctx->getCOFFSection( | |
| ".apple_objc", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata(), "objc_begin"); | |
| DrectveSection = Ctx->getCOFFSection( | |
| ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE, | |
| SectionKind::getMetadata()); | |
| PDataSection = Ctx->getCOFFSection( | |
| ".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getData()); | |
| XDataSection = Ctx->getCOFFSection( | |
| ".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getData()); | |
| SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO, | |
| SectionKind::getMetadata()); | |
| GEHContSection = Ctx->getCOFFSection(".gehcont$y", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| GFIDsSection = Ctx->getCOFFSection(".gfids$y", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| GIATsSection = Ctx->getCOFFSection(".giats$y", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| GLJMPSection = Ctx->getCOFFSection(".gljmp$y", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| TLSDataSection = Ctx->getCOFFSection( | |
| ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getData()); | |
| StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getReadOnly()); | |
| } | |
| void MCObjectFileInfo::initSPIRVMCObjectFileInfo(const Triple &T) { | |
| // Put everything in a single binary section. | |
| TextSection = Ctx->getSPIRVSection(); | |
| } | |
| void MCObjectFileInfo::initWasmMCObjectFileInfo(const Triple &T) { | |
| TextSection = Ctx->getWasmSection(".text", SectionKind::getText()); | |
| DataSection = Ctx->getWasmSection(".data", SectionKind::getData()); | |
| DwarfLineSection = | |
| Ctx->getWasmSection(".debug_line", SectionKind::getMetadata()); | |
| DwarfLineStrSection = | |
| Ctx->getWasmSection(".debug_line_str", SectionKind::getMetadata(), | |
| wasm::WASM_SEG_FLAG_STRINGS); | |
| DwarfStrSection = Ctx->getWasmSection( | |
| ".debug_str", SectionKind::getMetadata(), wasm::WASM_SEG_FLAG_STRINGS); | |
| DwarfLocSection = | |
| Ctx->getWasmSection(".debug_loc", SectionKind::getMetadata()); | |
| DwarfAbbrevSection = | |
| Ctx->getWasmSection(".debug_abbrev", SectionKind::getMetadata()); | |
| DwarfARangesSection = Ctx->getWasmSection(".debug_aranges", SectionKind::getMetadata()); | |
| DwarfRangesSection = | |
| Ctx->getWasmSection(".debug_ranges", SectionKind::getMetadata()); | |
| DwarfMacinfoSection = | |
| Ctx->getWasmSection(".debug_macinfo", SectionKind::getMetadata()); | |
| DwarfMacroSection = | |
| Ctx->getWasmSection(".debug_macro", SectionKind::getMetadata()); | |
| DwarfCUIndexSection = Ctx->getWasmSection(".debug_cu_index", SectionKind::getMetadata()); | |
| DwarfTUIndexSection = Ctx->getWasmSection(".debug_tu_index", SectionKind::getMetadata()); | |
| DwarfInfoSection = | |
| Ctx->getWasmSection(".debug_info", SectionKind::getMetadata()); | |
| DwarfFrameSection = Ctx->getWasmSection(".debug_frame", SectionKind::getMetadata()); | |
| DwarfPubNamesSection = Ctx->getWasmSection(".debug_pubnames", SectionKind::getMetadata()); | |
| DwarfPubTypesSection = Ctx->getWasmSection(".debug_pubtypes", SectionKind::getMetadata()); | |
| DwarfGnuPubNamesSection = | |
| Ctx->getWasmSection(".debug_gnu_pubnames", SectionKind::getMetadata()); | |
| DwarfGnuPubTypesSection = | |
| Ctx->getWasmSection(".debug_gnu_pubtypes", SectionKind::getMetadata()); | |
| DwarfDebugNamesSection = | |
| Ctx->getWasmSection(".debug_names", SectionKind::getMetadata()); | |
| DwarfStrOffSection = | |
| Ctx->getWasmSection(".debug_str_offsets", SectionKind::getMetadata()); | |
| DwarfAddrSection = | |
| Ctx->getWasmSection(".debug_addr", SectionKind::getMetadata()); | |
| DwarfRnglistsSection = | |
| Ctx->getWasmSection(".debug_rnglists", SectionKind::getMetadata()); | |
| DwarfLoclistsSection = | |
| Ctx->getWasmSection(".debug_loclists", SectionKind::getMetadata()); | |
| // Fission Sections | |
| DwarfInfoDWOSection = | |
| Ctx->getWasmSection(".debug_info.dwo", SectionKind::getMetadata()); | |
| DwarfTypesDWOSection = | |
| Ctx->getWasmSection(".debug_types.dwo", SectionKind::getMetadata()); | |
| DwarfAbbrevDWOSection = | |
| Ctx->getWasmSection(".debug_abbrev.dwo", SectionKind::getMetadata()); | |
| DwarfStrDWOSection = | |
| Ctx->getWasmSection(".debug_str.dwo", SectionKind::getMetadata(), | |
| wasm::WASM_SEG_FLAG_STRINGS); | |
| DwarfLineDWOSection = | |
| Ctx->getWasmSection(".debug_line.dwo", SectionKind::getMetadata()); | |
| DwarfLocDWOSection = | |
| Ctx->getWasmSection(".debug_loc.dwo", SectionKind::getMetadata()); | |
| DwarfStrOffDWOSection = | |
| Ctx->getWasmSection(".debug_str_offsets.dwo", SectionKind::getMetadata()); | |
| DwarfRnglistsDWOSection = | |
| Ctx->getWasmSection(".debug_rnglists.dwo", SectionKind::getMetadata()); | |
| DwarfMacinfoDWOSection = | |
| Ctx->getWasmSection(".debug_macinfo.dwo", SectionKind::getMetadata()); | |
| DwarfMacroDWOSection = | |
| Ctx->getWasmSection(".debug_macro.dwo", SectionKind::getMetadata()); | |
| DwarfLoclistsDWOSection = | |
| Ctx->getWasmSection(".debug_loclists.dwo", SectionKind::getMetadata()); | |
| // DWP Sections | |
| DwarfCUIndexSection = | |
| Ctx->getWasmSection(".debug_cu_index", SectionKind::getMetadata()); | |
| DwarfTUIndexSection = | |
| Ctx->getWasmSection(".debug_tu_index", SectionKind::getMetadata()); | |
| // Wasm use data section for LSDA. | |
| // TODO Consider putting each function's exception table in a separate | |
| // section, as in -function-sections, to facilitate lld's --gc-section. | |
| LSDASection = Ctx->getWasmSection(".rodata.gcc_except_table", | |
| SectionKind::getReadOnlyWithRel()); | |
| // TODO: Define more sections. | |
| } | |
| void MCObjectFileInfo::initXCOFFMCObjectFileInfo(const Triple &T) { | |
| // The default csect for program code. Functions without a specified section | |
| // get placed into this csect. The choice of csect name is not a property of | |
| // the ABI or object file format. For example, the XL compiler uses an unnamed | |
| // csect for program code. | |
| TextSection = Ctx->getXCOFFSection( | |
| ".text", SectionKind::getText(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_PR, XCOFF::XTY_SD), | |
| /* MultiSymbolsAllowed*/ true); | |
| DataSection = Ctx->getXCOFFSection( | |
| ".data", SectionKind::getData(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RW, XCOFF::XTY_SD), | |
| /* MultiSymbolsAllowed*/ true); | |
| ReadOnlySection = Ctx->getXCOFFSection( | |
| ".rodata", SectionKind::getReadOnly(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, XCOFF::XTY_SD), | |
| /* MultiSymbolsAllowed*/ true); | |
| ReadOnlySection->setAlignment(Align(4)); | |
| ReadOnly8Section = Ctx->getXCOFFSection( | |
| ".rodata.8", SectionKind::getReadOnly(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, XCOFF::XTY_SD), | |
| /* MultiSymbolsAllowed*/ true); | |
| ReadOnly8Section->setAlignment(Align(8)); | |
| ReadOnly16Section = Ctx->getXCOFFSection( | |
| ".rodata.16", SectionKind::getReadOnly(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, XCOFF::XTY_SD), | |
| /* MultiSymbolsAllowed*/ true); | |
| ReadOnly16Section->setAlignment(Align(16)); | |
| TLSDataSection = Ctx->getXCOFFSection( | |
| ".tdata", SectionKind::getThreadData(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_TL, XCOFF::XTY_SD), | |
| /* MultiSymbolsAllowed*/ true); | |
| TOCBaseSection = Ctx->getXCOFFSection( | |
| "TOC", SectionKind::getData(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_TC0, | |
| XCOFF::XTY_SD)); | |
| // The TOC-base always has 0 size, but 4 byte alignment. | |
| TOCBaseSection->setAlignment(Align(4)); | |
| LSDASection = Ctx->getXCOFFSection( | |
| ".gcc_except_table", SectionKind::getReadOnly(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, | |
| XCOFF::XTY_SD)); | |
| CompactUnwindSection = Ctx->getXCOFFSection( | |
| ".eh_info_table", SectionKind::getData(), | |
| XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RW, | |
| XCOFF::XTY_SD)); | |
| // DWARF sections for XCOFF are not csects. They are special STYP_DWARF | |
| // sections, and the individual DWARF sections are distinguished by their | |
| // section subtype. | |
| DwarfAbbrevSection = Ctx->getXCOFFSection( | |
| ".dwabrev", SectionKind::getMetadata(), | |
| /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwabrev", XCOFF::SSUBTYP_DWABREV); | |
| DwarfInfoSection = Ctx->getXCOFFSection( | |
| ".dwinfo", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwinfo", XCOFF::SSUBTYP_DWINFO); | |
| DwarfLineSection = Ctx->getXCOFFSection( | |
| ".dwline", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwline", XCOFF::SSUBTYP_DWLINE); | |
| DwarfFrameSection = Ctx->getXCOFFSection( | |
| ".dwframe", SectionKind::getMetadata(), | |
| /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwframe", XCOFF::SSUBTYP_DWFRAME); | |
| DwarfPubNamesSection = Ctx->getXCOFFSection( | |
| ".dwpbnms", SectionKind::getMetadata(), | |
| /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwpbnms", XCOFF::SSUBTYP_DWPBNMS); | |
| DwarfPubTypesSection = Ctx->getXCOFFSection( | |
| ".dwpbtyp", SectionKind::getMetadata(), | |
| /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwpbtyp", XCOFF::SSUBTYP_DWPBTYP); | |
| DwarfStrSection = Ctx->getXCOFFSection( | |
| ".dwstr", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwstr", XCOFF::SSUBTYP_DWSTR); | |
| DwarfLocSection = Ctx->getXCOFFSection( | |
| ".dwloc", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwloc", XCOFF::SSUBTYP_DWLOC); | |
| DwarfARangesSection = Ctx->getXCOFFSection( | |
| ".dwarnge", SectionKind::getMetadata(), | |
| /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwarnge", XCOFF::SSUBTYP_DWARNGE); | |
| DwarfRangesSection = Ctx->getXCOFFSection( | |
| ".dwrnges", SectionKind::getMetadata(), | |
| /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwrnges", XCOFF::SSUBTYP_DWRNGES); | |
| DwarfMacinfoSection = Ctx->getXCOFFSection( | |
| ".dwmac", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt, | |
| /* MultiSymbolsAllowed */ true, ".dwmac", XCOFF::SSUBTYP_DWMAC); | |
| } | |
| void MCObjectFileInfo::initDXContainerObjectFileInfo(const Triple &T) { | |
| // At the moment the DXBC section should end up empty. | |
| TextSection = Ctx->getDXContainerSection("DXBC", SectionKind::getText()); | |
| } | |
| MCObjectFileInfo::~MCObjectFileInfo() = default; | |
| void MCObjectFileInfo::initMCObjectFileInfo(MCContext &MCCtx, bool PIC, | |
| bool LargeCodeModel) { | |
| PositionIndependent = PIC; | |
| Ctx = &MCCtx; | |
| // Common. | |
| SupportsWeakOmittedEHFrame = true; | |
| SupportsCompactUnwindWithoutEHFrame = false; | |
| OmitDwarfIfHaveCompactUnwind = false; | |
| FDECFIEncoding = dwarf::DW_EH_PE_absptr; | |
| CompactUnwindDwarfEHFrameOnly = 0; | |
| EHFrameSection = nullptr; // Created on demand. | |
| CompactUnwindSection = nullptr; // Used only by selected targets. | |
| DwarfAccelNamesSection = nullptr; // Used only by selected targets. | |
| DwarfAccelObjCSection = nullptr; // Used only by selected targets. | |
| DwarfAccelNamespaceSection = nullptr; // Used only by selected targets. | |
| DwarfAccelTypesSection = nullptr; // Used only by selected targets. | |
| Triple TheTriple = Ctx->getTargetTriple(); | |
| switch (Ctx->getObjectFileType()) { | |
| case MCContext::IsMachO: | |
| initMachOMCObjectFileInfo(TheTriple); | |
| break; | |
| case MCContext::IsCOFF: | |
| initCOFFMCObjectFileInfo(TheTriple); | |
| break; | |
| case MCContext::IsELF: | |
| initELFMCObjectFileInfo(TheTriple, LargeCodeModel); | |
| break; | |
| case MCContext::IsGOFF: | |
| initGOFFMCObjectFileInfo(TheTriple); | |
| break; | |
| case MCContext::IsSPIRV: | |
| initSPIRVMCObjectFileInfo(TheTriple); | |
| break; | |
| case MCContext::IsWasm: | |
| initWasmMCObjectFileInfo(TheTriple); | |
| break; | |
| case MCContext::IsXCOFF: | |
| initXCOFFMCObjectFileInfo(TheTriple); | |
| break; | |
| case MCContext::IsDXContainer: | |
| initDXContainerObjectFileInfo(TheTriple); | |
| break; | |
| } | |
| } | |
| MCSection *MCObjectFileInfo::getDwarfComdatSection(const char *Name, | |
| uint64_t Hash) const { | |
| switch (Ctx->getTargetTriple().getObjectFormat()) { | |
| case Triple::ELF: | |
| return Ctx->getELFSection(Name, ELF::SHT_PROGBITS, ELF::SHF_GROUP, 0, | |
| utostr(Hash), /*IsComdat=*/true); | |
| case Triple::Wasm: | |
| return Ctx->getWasmSection(Name, SectionKind::getMetadata(), 0, | |
| utostr(Hash), MCContext::GenericSectionID); | |
| case Triple::MachO: | |
| case Triple::COFF: | |
| case Triple::GOFF: | |
| case Triple::SPIRV: | |
| case Triple::XCOFF: | |
| case Triple::DXContainer: | |
| case Triple::UnknownObjectFormat: | |
| report_fatal_error("Cannot get DWARF comdat section for this object file " | |
| "format: not implemented."); | |
| break; | |
| } | |
| llvm_unreachable("Unknown ObjectFormatType"); | |
| } | |
| MCSection * | |
| MCObjectFileInfo::getStackSizesSection(const MCSection &TextSec) const { | |
| if ((Ctx->getObjectFileType() != MCContext::IsELF) || | |
| Ctx->getTargetTriple().isPS4()) | |
| return StackSizesSection; | |
| const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec); | |
| unsigned Flags = ELF::SHF_LINK_ORDER; | |
| StringRef GroupName; | |
| if (const MCSymbol *Group = ElfSec.getGroup()) { | |
| GroupName = Group->getName(); | |
| Flags |= ELF::SHF_GROUP; | |
| } | |
| return Ctx->getELFSection(".stack_sizes", ELF::SHT_PROGBITS, Flags, 0, | |
| GroupName, true, ElfSec.getUniqueID(), | |
| cast<MCSymbolELF>(TextSec.getBeginSymbol())); | |
| } | |
| MCSection * | |
| MCObjectFileInfo::getBBAddrMapSection(const MCSection &TextSec) const { | |
| if (Ctx->getObjectFileType() != MCContext::IsELF) | |
| return nullptr; | |
| const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec); | |
| unsigned Flags = ELF::SHF_LINK_ORDER; | |
| StringRef GroupName; | |
| if (const MCSymbol *Group = ElfSec.getGroup()) { | |
| GroupName = Group->getName(); | |
| Flags |= ELF::SHF_GROUP; | |
| } | |
| // Use the text section's begin symbol and unique ID to create a separate | |
| // .llvm_bb_addr_map section associated with every unique text section. | |
| return Ctx->getELFSection(".llvm_bb_addr_map", ELF::SHT_LLVM_BB_ADDR_MAP, | |
| Flags, 0, GroupName, true, ElfSec.getUniqueID(), | |
| cast<MCSymbolELF>(TextSec.getBeginSymbol())); | |
| } | |
| MCSection * | |
| MCObjectFileInfo::getKCFITrapSection(const MCSection &TextSec) const { | |
| if (Ctx->getObjectFileType() != MCContext::IsELF) | |
| return nullptr; | |
| const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec); | |
| unsigned Flags = ELF::SHF_LINK_ORDER | ELF::SHF_ALLOC; | |
| StringRef GroupName; | |
| if (const MCSymbol *Group = ElfSec.getGroup()) { | |
| GroupName = Group->getName(); | |
| Flags |= ELF::SHF_GROUP; | |
| } | |
| return Ctx->getELFSection(".kcfi_traps", ELF::SHT_PROGBITS, Flags, 0, | |
| GroupName, | |
| /*IsComdat=*/true, ElfSec.getUniqueID(), | |
| cast<MCSymbolELF>(TextSec.getBeginSymbol())); | |
| } | |
| MCSection * | |
| MCObjectFileInfo::getPseudoProbeSection(const MCSection &TextSec) const { | |
| if (Ctx->getObjectFileType() == MCContext::IsELF) { | |
| const auto &ElfSec = static_cast<const MCSectionELF &>(TextSec); | |
| // Create a separate section for probes that comes with a comdat function. | |
| if (const MCSymbol *Group = ElfSec.getGroup()) { | |
| auto *S = static_cast<MCSectionELF *>(PseudoProbeSection); | |
| auto Flags = S->getFlags() | ELF::SHF_GROUP; | |
| return Ctx->getELFSection(S->getName(), S->getType(), Flags, | |
| S->getEntrySize(), Group->getName(), | |
| /*IsComdat=*/true); | |
| } | |
| } | |
| return PseudoProbeSection; | |
| } | |
| MCSection * | |
| MCObjectFileInfo::getPseudoProbeDescSection(StringRef FuncName) const { | |
| if (Ctx->getObjectFileType() == MCContext::IsELF) { | |
| // Create a separate comdat group for each function's descriptor in order | |
| // for the linker to deduplicate. The duplication, must be from different | |
| // tranlation unit, can come from: | |
| // 1. Inline functions defined in header files; | |
| // 2. ThinLTO imported funcions; | |
| // 3. Weak-linkage definitions. | |
| // Use a concatenation of the section name and the function name as the | |
| // group name so that descriptor-only groups won't be folded with groups of | |
| // code. | |
| if (Ctx->getTargetTriple().supportsCOMDAT() && !FuncName.empty()) { | |
| auto *S = static_cast<MCSectionELF *>(PseudoProbeDescSection); | |
| auto Flags = S->getFlags() | ELF::SHF_GROUP; | |
| return Ctx->getELFSection(S->getName(), S->getType(), Flags, | |
| S->getEntrySize(), | |
| S->getName() + "_" + FuncName, | |
| /*IsComdat=*/true); | |
| } | |
| } | |
| return PseudoProbeDescSection; | |
| } | |
| MCSection *MCObjectFileInfo::getLLVMStatsSection() const { | |
| return LLVMStatsSection; | |
| } | |
| MCSection *MCObjectFileInfo::getPCSection(StringRef Name, | |
| const MCSection *TextSec) const { | |
| if (Ctx->getObjectFileType() != MCContext::IsELF) | |
| return nullptr; | |
| // SHF_WRITE for relocations, and let user post-process data in-place. | |
| unsigned Flags = ELF::SHF_WRITE | ELF::SHF_ALLOC | ELF::SHF_LINK_ORDER; | |
| if (!TextSec) | |
| TextSec = getTextSection(); | |
| StringRef GroupName; | |
| const auto &ElfSec = static_cast<const MCSectionELF &>(*TextSec); | |
| if (const MCSymbol *Group = ElfSec.getGroup()) { | |
| GroupName = Group->getName(); | |
| Flags |= ELF::SHF_GROUP; | |
| } | |
| return Ctx->getELFSection(Name, ELF::SHT_PROGBITS, Flags, 0, GroupName, true, | |
| ElfSec.getUniqueID(), | |
| cast<MCSymbolELF>(TextSec->getBeginSymbol())); | |
| } |