| //===-- MObjectFileInfo.cpp - Object File Information ---------------------===// | |
| // | |
| // The LLVM Compiler Infrastructure | |
| // | |
| // This file is distributed under the University of Illinois Open Source | |
| // License. See LICENSE.TXT for details. | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #include "llvm/MC/MCObjectFileInfo.h" | |
| #include "llvm/MC/MCContext.h" | |
| #include "llvm/MC/MCSection.h" | |
| #include "llvm/MC/MCSectionCOFF.h" | |
| #include "llvm/MC/MCSectionELF.h" | |
| #include "llvm/MC/MCSectionMachO.h" | |
| #include "llvm/ADT/Triple.h" | |
| using namespace llvm; | |
| void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { | |
| // MachO | |
| IsFunctionEHFrameSymbolPrivate = false; | |
| SupportsWeakOmittedEHFrame = false; | |
| PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | |
| | dwarf::DW_EH_PE_sdata4; | |
| LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel; | |
| TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | | |
| dwarf::DW_EH_PE_sdata4; | |
| // .comm doesn't support alignment before Leopard. | |
| if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5)) | |
| CommDirectiveSupportsAlignment = false; | |
| TextSection // .text | |
| = Ctx->getMachOSection("__TEXT", "__text", | |
| MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, | |
| SectionKind::getText()); | |
| DataSection // .data | |
| = Ctx->getMachOSection("__DATA", "__data", 0, | |
| SectionKind::getDataRel()); | |
| TLSDataSection // .tdata | |
| = Ctx->getMachOSection("__DATA", "__thread_data", | |
| MCSectionMachO::S_THREAD_LOCAL_REGULAR, | |
| SectionKind::getDataRel()); | |
| TLSBSSSection // .tbss | |
| = Ctx->getMachOSection("__DATA", "__thread_bss", | |
| MCSectionMachO::S_THREAD_LOCAL_ZEROFILL, | |
| SectionKind::getThreadBSS()); | |
| // TODO: Verify datarel below. | |
| TLSTLVSection // .tlv | |
| = Ctx->getMachOSection("__DATA", "__thread_vars", | |
| MCSectionMachO::S_THREAD_LOCAL_VARIABLES, | |
| SectionKind::getDataRel()); | |
| TLSThreadInitSection | |
| = Ctx->getMachOSection("__DATA", "__thread_init", | |
| MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, | |
| SectionKind::getDataRel()); | |
| CStringSection // .cstring | |
| = Ctx->getMachOSection("__TEXT", "__cstring", | |
| MCSectionMachO::S_CSTRING_LITERALS, | |
| SectionKind::getMergeable1ByteCString()); | |
| UStringSection | |
| = Ctx->getMachOSection("__TEXT","__ustring", 0, | |
| SectionKind::getMergeable2ByteCString()); | |
| FourByteConstantSection // .literal4 | |
| = Ctx->getMachOSection("__TEXT", "__literal4", | |
| MCSectionMachO::S_4BYTE_LITERALS, | |
| SectionKind::getMergeableConst4()); | |
| EightByteConstantSection // .literal8 | |
| = Ctx->getMachOSection("__TEXT", "__literal8", | |
| MCSectionMachO::S_8BYTE_LITERALS, | |
| SectionKind::getMergeableConst8()); | |
| // ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back | |
| // to using it in -static mode. | |
| SixteenByteConstantSection = 0; | |
| if (RelocM != Reloc::Static && | |
| T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64) | |
| SixteenByteConstantSection = // .literal16 | |
| Ctx->getMachOSection("__TEXT", "__literal16", | |
| MCSectionMachO::S_16BYTE_LITERALS, | |
| SectionKind::getMergeableConst16()); | |
| ReadOnlySection // .const | |
| = Ctx->getMachOSection("__TEXT", "__const", 0, | |
| SectionKind::getReadOnly()); | |
| TextCoalSection | |
| = Ctx->getMachOSection("__TEXT", "__textcoal_nt", | |
| MCSectionMachO::S_COALESCED | | |
| MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, | |
| SectionKind::getText()); | |
| ConstTextCoalSection | |
| = Ctx->getMachOSection("__TEXT", "__const_coal", | |
| MCSectionMachO::S_COALESCED, | |
| SectionKind::getReadOnly()); | |
| ConstDataSection // .const_data | |
| = Ctx->getMachOSection("__DATA", "__const", 0, | |
| SectionKind::getReadOnlyWithRel()); | |
| DataCoalSection | |
| = Ctx->getMachOSection("__DATA","__datacoal_nt", | |
| MCSectionMachO::S_COALESCED, | |
| SectionKind::getDataRel()); | |
| DataCommonSection | |
| = Ctx->getMachOSection("__DATA","__common", | |
| MCSectionMachO::S_ZEROFILL, | |
| SectionKind::getBSS()); | |
| DataBSSSection | |
| = Ctx->getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL, | |
| SectionKind::getBSS()); | |
| LazySymbolPointerSection | |
| = Ctx->getMachOSection("__DATA", "__la_symbol_ptr", | |
| MCSectionMachO::S_LAZY_SYMBOL_POINTERS, | |
| SectionKind::getMetadata()); | |
| NonLazySymbolPointerSection | |
| = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr", | |
| MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS, | |
| SectionKind::getMetadata()); | |
| if (RelocM == Reloc::Static) { | |
| StaticCtorSection | |
| = Ctx->getMachOSection("__TEXT", "__constructor", 0, | |
| SectionKind::getDataRel()); | |
| StaticDtorSection | |
| = Ctx->getMachOSection("__TEXT", "__destructor", 0, | |
| SectionKind::getDataRel()); | |
| } else { | |
| StaticCtorSection | |
| = Ctx->getMachOSection("__DATA", "__mod_init_func", | |
| MCSectionMachO::S_MOD_INIT_FUNC_POINTERS, | |
| SectionKind::getDataRel()); | |
| StaticDtorSection | |
| = Ctx->getMachOSection("__DATA", "__mod_term_func", | |
| MCSectionMachO::S_MOD_TERM_FUNC_POINTERS, | |
| SectionKind::getDataRel()); | |
| } | |
| // Exception Handling. | |
| LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0, | |
| SectionKind::getReadOnlyWithRel()); | |
| if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) | |
| CompactUnwindSection = | |
| Ctx->getMachOSection("__LD", "__compact_unwind", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getReadOnly()); | |
| // Debug Information. | |
| DwarfAbbrevSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_abbrev", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfInfoSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_info", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfLineSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_line", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfFrameSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_frame", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfPubNamesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_pubnames", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfPubTypesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_pubtypes", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfStrSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_str", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfLocSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_loc", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfARangesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_aranges", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfRangesSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_ranges", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfMacroInfoSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_macinfo", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| DwarfDebugInlineSection = | |
| Ctx->getMachOSection("__DWARF", "__debug_inlined", | |
| MCSectionMachO::S_ATTR_DEBUG, | |
| SectionKind::getMetadata()); | |
| TLSExtraDataSection = TLSTLVSection; | |
| } | |
| void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { | |
| if (T.getArch() == Triple::x86) { | |
| PersonalityEncoding = (RelocM == Reloc::PIC_) | |
| ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4 | |
| : dwarf::DW_EH_PE_absptr; | |
| LSDAEncoding = (RelocM == Reloc::PIC_) | |
| ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4 | |
| : dwarf::DW_EH_PE_absptr; | |
| FDEEncoding = FDECFIEncoding = (RelocM == Reloc::PIC_) | |
| ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4 | |
| : dwarf::DW_EH_PE_absptr; | |
| TTypeEncoding = (RelocM == Reloc::PIC_) | |
| ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4 | |
| : dwarf::DW_EH_PE_absptr; | |
| } else if (T.getArch() == Triple::x86_64) { | |
| FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; | |
| if (RelocM == Reloc::PIC_) { | |
| PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | | |
| ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium) | |
| ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8); | |
| LSDAEncoding = dwarf::DW_EH_PE_pcrel | | |
| (CMModel == CodeModel::Small | |
| ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8); | |
| FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; | |
| TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | | |
| ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium) | |
| ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8); | |
| } else { | |
| PersonalityEncoding = | |
| (CMModel == CodeModel::Small || CMModel == CodeModel::Medium) | |
| ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; | |
| LSDAEncoding = (CMModel == CodeModel::Small) | |
| ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; | |
| FDEEncoding = dwarf::DW_EH_PE_udata4; | |
| TTypeEncoding = (CMModel == CodeModel::Small) | |
| ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; | |
| } | |
| } | |
| // ELF | |
| BSSSection = | |
| Ctx->getELFSection(".bss", ELF::SHT_NOBITS, | |
| ELF::SHF_WRITE |ELF::SHF_ALLOC, | |
| SectionKind::getBSS()); | |
| TextSection = | |
| Ctx->getELFSection(".text", ELF::SHT_PROGBITS, | |
| ELF::SHF_EXECINSTR | | |
| ELF::SHF_ALLOC, | |
| SectionKind::getText()); | |
| DataSection = | |
| Ctx->getELFSection(".data", ELF::SHT_PROGBITS, | |
| ELF::SHF_WRITE |ELF::SHF_ALLOC, | |
| SectionKind::getDataRel()); | |
| ReadOnlySection = | |
| Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC, | |
| SectionKind::getReadOnly()); | |
| TLSDataSection = | |
| Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_TLS | | |
| ELF::SHF_WRITE, | |
| SectionKind::getThreadData()); | |
| TLSBSSSection = | |
| Ctx->getELFSection(".tbss", ELF::SHT_NOBITS, | |
| ELF::SHF_ALLOC | ELF::SHF_TLS | | |
| ELF::SHF_WRITE, | |
| SectionKind::getThreadBSS()); | |
| DataRelSection = | |
| Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_WRITE, | |
| SectionKind::getDataRel()); | |
| DataRelLocalSection = | |
| Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_WRITE, | |
| SectionKind::getDataRelLocal()); | |
| DataRelROSection = | |
| Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_WRITE, | |
| SectionKind::getReadOnlyWithRel()); | |
| DataRelROLocalSection = | |
| Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_WRITE, | |
| SectionKind::getReadOnlyWithRelLocal()); | |
| MergeableConst4Section = | |
| Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_MERGE, | |
| SectionKind::getMergeableConst4()); | |
| MergeableConst8Section = | |
| Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_MERGE, | |
| SectionKind::getMergeableConst8()); | |
| MergeableConst16Section = | |
| Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_MERGE, | |
| SectionKind::getMergeableConst16()); | |
| StaticCtorSection = | |
| Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_WRITE, | |
| SectionKind::getDataRel()); | |
| StaticDtorSection = | |
| Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC |ELF::SHF_WRITE, | |
| SectionKind::getDataRel()); | |
| // 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, | |
| SectionKind::getReadOnly()); | |
| // Debug Info Sections. | |
| DwarfAbbrevSection = | |
| Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfInfoSection = | |
| Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfLineSection = | |
| Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfFrameSection = | |
| Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfPubNamesSection = | |
| Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfPubTypesSection = | |
| Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfStrSection = | |
| Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfLocSection = | |
| Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfARangesSection = | |
| Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfRangesSection = | |
| Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| DwarfMacroInfoSection = | |
| Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0, | |
| SectionKind::getMetadata()); | |
| } | |
| void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { | |
| // COFF | |
| TextSection = | |
| Ctx->getCOFFSection(".text", | |
| 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::getDataRel()); | |
| ReadOnlySection = | |
| Ctx->getCOFFSection(".rdata", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getReadOnly()); | |
| StaticCtorSection = | |
| Ctx->getCOFFSection(".ctors", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getDataRel()); | |
| StaticDtorSection = | |
| Ctx->getCOFFSection(".dtors", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getDataRel()); | |
| // FIXME: We're emitting LSDA info into a readonly section on COFF, 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->getCOFFSection(".gcc_except_table", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getReadOnly()); | |
| // Debug info. | |
| DwarfAbbrevSection = | |
| Ctx->getCOFFSection(".debug_abbrev", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfInfoSection = | |
| Ctx->getCOFFSection(".debug_info", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfLineSection = | |
| Ctx->getCOFFSection(".debug_line", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfFrameSection = | |
| Ctx->getCOFFSection(".debug_frame", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfPubNamesSection = | |
| Ctx->getCOFFSection(".debug_pubnames", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfPubTypesSection = | |
| Ctx->getCOFFSection(".debug_pubtypes", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfStrSection = | |
| Ctx->getCOFFSection(".debug_str", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfLocSection = | |
| Ctx->getCOFFSection(".debug_loc", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfARangesSection = | |
| Ctx->getCOFFSection(".debug_aranges", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfRangesSection = | |
| Ctx->getCOFFSection(".debug_ranges", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DwarfMacroInfoSection = | |
| Ctx->getCOFFSection(".debug_macinfo", | |
| COFF::IMAGE_SCN_MEM_DISCARDABLE | | |
| COFF::IMAGE_SCN_MEM_READ, | |
| SectionKind::getMetadata()); | |
| DrectveSection = | |
| Ctx->getCOFFSection(".drectve", | |
| COFF::IMAGE_SCN_LNK_INFO, | |
| SectionKind::getMetadata()); | |
| PDataSection = | |
| Ctx->getCOFFSection(".pdata", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getDataRel()); | |
| XDataSection = | |
| Ctx->getCOFFSection(".xdata", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getDataRel()); | |
| } | |
| void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, | |
| CodeModel::Model cm, | |
| MCContext &ctx) { | |
| RelocM = relocm; | |
| CMModel = cm; | |
| Ctx = &ctx; | |
| // Common. | |
| CommDirectiveSupportsAlignment = true; | |
| SupportsWeakOmittedEHFrame = true; | |
| IsFunctionEHFrameSymbolPrivate = true; | |
| PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding = | |
| TTypeEncoding = dwarf::DW_EH_PE_absptr; | |
| EHFrameSection = 0; // Created on demand. | |
| CompactUnwindSection = 0; // Used only by selected targets. | |
| Triple T(TT); | |
| Triple::ArchType Arch = T.getArch(); | |
| // FIXME: Checking for Arch here to filter out bogus triples such as | |
| // cellspu-apple-darwin. Perhaps we should fix in Triple? | |
| if ((Arch == Triple::x86 || Arch == Triple::x86_64 || | |
| Arch == Triple::arm || Arch == Triple::thumb || | |
| Arch == Triple::ppc || Arch == Triple::ppc64 || | |
| Arch == Triple::UnknownArch) && | |
| (T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) { | |
| Env = IsMachO; | |
| InitMachOMCObjectFileInfo(T); | |
| } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) && | |
| (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin || | |
| T.getOS() == Triple::Win32)) { | |
| Env = IsCOFF; | |
| InitCOFFMCObjectFileInfo(T); | |
| } else { | |
| Env = IsELF; | |
| InitELFMCObjectFileInfo(T); | |
| } | |
| } | |
| void MCObjectFileInfo::InitEHFrameSection() { | |
| if (Env == IsMachO) | |
| EHFrameSection = | |
| Ctx->getMachOSection("__TEXT", "__eh_frame", | |
| MCSectionMachO::S_COALESCED | | |
| MCSectionMachO::S_ATTR_NO_TOC | | |
| MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS | | |
| MCSectionMachO::S_ATTR_LIVE_SUPPORT, | |
| SectionKind::getReadOnly()); | |
| else if (Env == IsELF) | |
| EHFrameSection = | |
| Ctx->getELFSection(".eh_frame", ELF::SHT_PROGBITS, | |
| ELF::SHF_ALLOC, | |
| SectionKind::getDataRel()); | |
| else | |
| EHFrameSection = | |
| Ctx->getCOFFSection(".eh_frame", | |
| COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | | |
| COFF::IMAGE_SCN_MEM_READ | | |
| COFF::IMAGE_SCN_MEM_WRITE, | |
| SectionKind::getDataRel()); | |
| } |