X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCObjectFileInfo.cpp;h=3aa13ef465d4f4a65812323d70b17b16b5888559;hb=4266ae806798f1e8982a53bb9babe1e508adfc68;hp=d76e48b8c50025228180a3a27b616fd932bc5395;hpb=dfa30e1ab243990eda4732a6dffb91e965e7a755;p=oota-llvm.git diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp index d76e48b8c50..3aa13ef465d 100644 --- a/lib/MC/MCObjectFileInfo.cpp +++ b/lib/MC/MCObjectFileInfo.cpp @@ -8,12 +8,13 @@ //===----------------------------------------------------------------------===// #include "llvm/MC/MCObjectFileInfo.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/ADT/Triple.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) { @@ -21,6 +22,9 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { IsFunctionEHFrameSymbolPrivate = false; SupportsWeakOmittedEHFrame = false; + if (T.isOSDarwin() && T.getArch() == Triple::arm64) + SupportsCompactUnwindWithoutEHFrame = true; + PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel; @@ -33,57 +37,55 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { TextSection // .text = Ctx->getMachOSection("__TEXT", "__text", - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, + MachO::S_ATTR_PURE_INSTRUCTIONS, SectionKind::getText()); DataSection // .data = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getDataRel()); + // BSSSection might not be expected initialized on msvc. + BSSSection = nullptr; + TLSDataSection // .tdata = Ctx->getMachOSection("__DATA", "__thread_data", - MCSectionMachO::S_THREAD_LOCAL_REGULAR, + MachO::S_THREAD_LOCAL_REGULAR, SectionKind::getDataRel()); TLSBSSSection // .tbss = Ctx->getMachOSection("__DATA", "__thread_bss", - MCSectionMachO::S_THREAD_LOCAL_ZEROFILL, + MachO::S_THREAD_LOCAL_ZEROFILL, SectionKind::getThreadBSS()); // TODO: Verify datarel below. TLSTLVSection // .tlv = Ctx->getMachOSection("__DATA", "__thread_vars", - MCSectionMachO::S_THREAD_LOCAL_VARIABLES, + MachO::S_THREAD_LOCAL_VARIABLES, SectionKind::getDataRel()); TLSThreadInitSection = Ctx->getMachOSection("__DATA", "__thread_init", - MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, - SectionKind::getDataRel()); + MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, + SectionKind::getDataRel()); CStringSection // .cstring = Ctx->getMachOSection("__TEXT", "__cstring", - MCSectionMachO::S_CSTRING_LITERALS, + MachO::S_CSTRING_LITERALS, SectionKind::getMergeable1ByteCString()); UStringSection = Ctx->getMachOSection("__TEXT","__ustring", 0, SectionKind::getMergeable2ByteCString()); FourByteConstantSection // .literal4 = Ctx->getMachOSection("__TEXT", "__literal4", - MCSectionMachO::S_4BYTE_LITERALS, + MachO::S_4BYTE_LITERALS, SectionKind::getMergeableConst4()); EightByteConstantSection // .literal8 = Ctx->getMachOSection("__TEXT", "__literal8", - MCSectionMachO::S_8BYTE_LITERALS, + MachO::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()); + SixteenByteConstantSection // .literal16 + = Ctx->getMachOSection("__TEXT", "__literal16", + MachO::S_16BYTE_LITERALS, + SectionKind::getMergeableConst16()); ReadOnlySection // .const = Ctx->getMachOSection("__TEXT", "__const", 0, @@ -91,36 +93,36 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { TextCoalSection = Ctx->getMachOSection("__TEXT", "__textcoal_nt", - MCSectionMachO::S_COALESCED | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, + MachO::S_COALESCED | + MachO::S_ATTR_PURE_INSTRUCTIONS, SectionKind::getText()); ConstTextCoalSection = Ctx->getMachOSection("__TEXT", "__const_coal", - MCSectionMachO::S_COALESCED, + MachO::S_COALESCED, SectionKind::getReadOnly()); ConstDataSection // .const_data = Ctx->getMachOSection("__DATA", "__const", 0, SectionKind::getReadOnlyWithRel()); DataCoalSection = Ctx->getMachOSection("__DATA","__datacoal_nt", - MCSectionMachO::S_COALESCED, + MachO::S_COALESCED, SectionKind::getDataRel()); DataCommonSection = Ctx->getMachOSection("__DATA","__common", - MCSectionMachO::S_ZEROFILL, + MachO::S_ZEROFILL, SectionKind::getBSS()); DataBSSSection - = Ctx->getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL, + = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL, SectionKind::getBSS()); LazySymbolPointerSection = Ctx->getMachOSection("__DATA", "__la_symbol_ptr", - MCSectionMachO::S_LAZY_SYMBOL_POINTERS, + MachO::S_LAZY_SYMBOL_POINTERS, SectionKind::getMetadata()); NonLazySymbolPointerSection = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr", - MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS, + MachO::S_NON_LAZY_SYMBOL_POINTERS, SectionKind::getMetadata()); if (RelocM == Reloc::Static) { @@ -133,11 +135,11 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { } else { StaticCtorSection = Ctx->getMachOSection("__DATA", "__mod_init_func", - MCSectionMachO::S_MOD_INIT_FUNC_POINTERS, + MachO::S_MOD_INIT_FUNC_POINTERS, SectionKind::getDataRel()); StaticDtorSection = Ctx->getMachOSection("__DATA", "__mod_term_func", - MCSectionMachO::S_MOD_TERM_FUNC_POINTERS, + MachO::S_MOD_TERM_FUNC_POINTERS, SectionKind::getDataRel()); } @@ -145,96 +147,127 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0, SectionKind::getReadOnlyWithRel()); - if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) + COFFDebugSymbolsSection = nullptr; + + if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) || + (T.isOSDarwin() && T.getArch() == Triple::arm64)) { CompactUnwindSection = Ctx->getMachOSection("__LD", "__compact_unwind", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getReadOnly()); + if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86) + CompactUnwindDwarfEHFrameOnly = 0x04000000; + else if (T.getArch() == Triple::arm64) + CompactUnwindDwarfEHFrameOnly = 0x03000000; + } + // Debug Information. DwarfAccelNamesSection = Ctx->getMachOSection("__DWARF", "__apple_names", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfAccelObjCSection = Ctx->getMachOSection("__DWARF", "__apple_objc", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); // 16 character section limit... DwarfAccelNamespaceSection = Ctx->getMachOSection("__DWARF", "__apple_namespac", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfAccelTypesSection = Ctx->getMachOSection("__DWARF", "__apple_types", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); - + DwarfAbbrevSection = Ctx->getMachOSection("__DWARF", "__debug_abbrev", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfInfoSection = Ctx->getMachOSection("__DWARF", "__debug_info", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfLineSection = Ctx->getMachOSection("__DWARF", "__debug_line", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfFrameSection = Ctx->getMachOSection("__DWARF", "__debug_frame", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + DwarfPubNamesSection = + Ctx->getMachOSection("__DWARF", "__debug_pubnames", + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfPubTypesSection = Ctx->getMachOSection("__DWARF", "__debug_pubtypes", - MCSectionMachO::S_ATTR_DEBUG, + 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", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfLocSection = Ctx->getMachOSection("__DWARF", "__debug_loc", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfARangesSection = Ctx->getMachOSection("__DWARF", "__debug_aranges", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfRangesSection = Ctx->getMachOSection("__DWARF", "__debug_ranges", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfMacroInfoSection = Ctx->getMachOSection("__DWARF", "__debug_macinfo", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); DwarfDebugInlineSection = Ctx->getMachOSection("__DWARF", "__debug_inlined", - MCSectionMachO::S_ATTR_DEBUG, + MachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + StackMapSection = + Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0, SectionKind::getMetadata()); TLSExtraDataSection = TLSTLVSection; } void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { + if (T.getArch() == Triple::mips || + T.getArch() == Triple::mipsel) + FDECFIEncoding = dwarf::DW_EH_PE_sdata4; + else if (T.getArch() == Triple::mips64 || + T.getArch() == Triple::mips64el) + FDECFIEncoding = dwarf::DW_EH_PE_sdata8; + else + FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; + 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; + ? 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_) + FDEEncoding = (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; + ? 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) @@ -256,12 +289,92 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { TTypeEncoding = (CMModel == CodeModel::Small) ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; } + } else if (T.getArch() == Triple::aarch64 || + T.getArch() == Triple::aarch64_be ) { + // The small model guarantees static code/data size < 4GB, but not where it + // will be in memory. Most of these could end up >2GB away so even a signed + // pc-relative 32-bit address is insufficient, theoretically. + if (RelocM == Reloc::PIC_) { + PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata8; + LSDAEncoding = dwarf::DW_EH_PE_pcrel | 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 | + dwarf::DW_EH_PE_sdata8; + } else { + PersonalityEncoding = dwarf::DW_EH_PE_absptr; + LSDAEncoding = dwarf::DW_EH_PE_absptr; + FDEEncoding = dwarf::DW_EH_PE_udata4; + TTypeEncoding = dwarf::DW_EH_PE_absptr; + } + } else if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le) { + PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_udata8; + LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8; + FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8; + TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_udata8; + } else if (T.getArch() == Triple::sparc) { + if (RelocM == Reloc::PIC_) { + LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; + PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4; + FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; + TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4; + } else { + LSDAEncoding = dwarf::DW_EH_PE_absptr; + PersonalityEncoding = dwarf::DW_EH_PE_absptr; + FDEEncoding = dwarf::DW_EH_PE_udata4; + TTypeEncoding = dwarf::DW_EH_PE_absptr; + } + } else if (T.getArch() == Triple::sparcv9) { + LSDAEncoding = 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 | + dwarf::DW_EH_PE_sdata4; + FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; + TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4; + } else { + PersonalityEncoding = dwarf::DW_EH_PE_absptr; + FDEEncoding = dwarf::DW_EH_PE_udata4; + TTypeEncoding = dwarf::DW_EH_PE_absptr; + } + } else if (T.getArch() == Triple::systemz) { + // All currently-defined code models guarantee that 4-byte PC-relative + // values will be in range. + if (RelocM == Reloc::PIC_) { + PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4; + LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; + FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; + TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4; + } else { + PersonalityEncoding = dwarf::DW_EH_PE_absptr; + LSDAEncoding = dwarf::DW_EH_PE_absptr; + FDEEncoding = dwarf::DW_EH_PE_absptr; + TTypeEncoding = dwarf::DW_EH_PE_absptr; + } + } + + // Solaris requires different flags for .eh_frame to seemingly every other + // platform. + EHSectionType = ELF::SHT_PROGBITS; + EHSectionFlags = ELF::SHF_ALLOC; + if (T.getOS() == Triple::Solaris) { + if (T.getArch() == Triple::x86_64) + EHSectionType = ELF::SHT_X86_64_UNWIND; + else + EHSectionFlags |= ELF::SHF_WRITE; } + // ELF BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS, - ELF::SHF_WRITE |ELF::SHF_ALLOC, + ELF::SHF_WRITE | ELF::SHF_ALLOC, SectionKind::getBSS()); TextSection = @@ -348,6 +461,8 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { ELF::SHF_ALLOC, SectionKind::getReadOnly()); + COFFDebugSymbolsSection = nullptr; + // Debug Info Sections. DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0, @@ -361,9 +476,18 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { 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()); + DwarfGnuPubNamesSection = + Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfGnuPubTypesSection = + Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); DwarfStrSection = Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, ELF::SHF_MERGE | ELF::SHF_STRINGS, @@ -380,11 +504,61 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { DwarfMacroInfoSection = Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0, SectionKind::getMetadata()); + + // DWARF5 Experimental Debug Info + + // Accelerator Tables + DwarfAccelNamesSection = + Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfAccelObjCSection = + Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfAccelNamespaceSection = + Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfAccelTypesSection = + Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + + // Fission Sections + DwarfInfoDWOSection = + Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfAbbrevDWOSection = + Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfStrDWOSection = + Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS, + ELF::SHF_MERGE | ELF::SHF_STRINGS, + SectionKind::getMergeable1ByteCString()); + DwarfLineDWOSection = + Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfLocDWOSection = + Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfStrOffDWOSection = + Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); + DwarfAddrSection = + Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0, + SectionKind::getMetadata()); } void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { + // The object file format cannot represent common symbols with explicit + // alignments. + CommDirectiveSupportsAlignment = false; + // 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", COFF::IMAGE_SCN_CNT_CODE | @@ -402,18 +576,36 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { 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()); + if (T.isKnownWindowsMSVCEnvironment()) { + StaticCtorSection = + Ctx->getCOFFSection(".CRT$XCU", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getReadOnly()); + } else { + StaticCtorSection = + Ctx->getCOFFSection(".ctors", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); + } + + + if (T.isKnownWindowsMSVCEnvironment()) { + StaticDtorSection = + Ctx->getCOFFSection(".CRT$XTX", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getReadOnly()); + } else { + 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 @@ -426,6 +618,13 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { 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()); + DwarfAbbrevSection = Ctx->getCOFFSection(".debug_abbrev", COFF::IMAGE_SCN_MEM_DISCARDABLE | @@ -446,11 +645,26 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { 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()); + DwarfGnuPubNamesSection = + Ctx->getCOFFSection(".debug_gnu_pubnames", + COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfGnuPubTypesSection = + Ctx->getCOFFSection(".debug_gnu_pubtypes", + COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); DwarfStrSection = Ctx->getCOFFSection(".debug_str", COFF::IMAGE_SCN_MEM_DISCARDABLE | @@ -476,6 +690,33 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_MEM_READ, SectionKind::getMetadata()); + DwarfInfoDWOSection = + Ctx->getCOFFSection(".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfAbbrevDWOSection = + Ctx->getCOFFSection(".debug_abbrev.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfStrDWOSection = + Ctx->getCOFFSection(".debug_str.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfLineDWOSection = + Ctx->getCOFFSection(".debug_line.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfLocDWOSection = + Ctx->getCOFFSection(".debug_loc.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfStrOffDWOSection = + Ctx->getCOFFSection(".debug_str_offsets.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); + DwarfAddrSection = Ctx->getCOFFSection( + ".debug_addr", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_MEM_READ, + SectionKind::getMetadata()); DrectveSection = Ctx->getCOFFSection(".drectve", @@ -485,12 +726,16 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { PDataSection = Ctx->getCOFFSection(".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | - COFF::IMAGE_SCN_MEM_READ | - COFF::IMAGE_SCN_MEM_WRITE, + COFF::IMAGE_SCN_MEM_READ, SectionKind::getDataRel()); XDataSection = Ctx->getCOFFSection(".xdata", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getDataRel()); + TLSDataSection = + Ctx->getCOFFSection(".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE, @@ -508,16 +753,19 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, CommDirectiveSupportsAlignment = true; SupportsWeakOmittedEHFrame = true; IsFunctionEHFrameSymbolPrivate = true; + SupportsCompactUnwindWithoutEHFrame = false; PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding = TTypeEncoding = dwarf::DW_EH_PE_absptr; - EHFrameSection = 0; // Created on demand. - CompactUnwindSection = 0; // Used only by selected targets. - DwarfAccelNamesSection = 0; // Used only by selected targets. - DwarfAccelObjCSection = 0; // Used only by selected targets. - DwarfAccelNamespaceSection = 0; // Used only by selected targets. - DwarfAccelTypesSection = 0; // Used only by selected targets. + 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 T(TT); Triple::ArchType Arch = T.getArch(); @@ -525,14 +773,14 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, // 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::arm64 || Arch == Triple::ppc || Arch == Triple::ppc64 || Arch == Triple::UnknownArch) && - (T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) { + (T.isOSDarwin() || T.isOSBinFormatMachO())) { 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)) { + T.getObjectFormat() != Triple::ELF && T.isOSWindows()) { Env = IsCOFF; InitCOFFMCObjectFileInfo(T); } else { @@ -541,19 +789,31 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, } } +const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const { + return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP, + SectionKind::getMetadata(), 0, utostr(Hash)); +} + +const MCSection * +MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const { + return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, + ELF::SHF_GROUP, SectionKind::getMetadata(), 0, + utostr(Hash)); +} + 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, + MachO::S_COALESCED | + MachO::S_ATTR_NO_TOC | + MachO::S_ATTR_STRIP_STATIC_SYMS | + MachO::S_ATTR_LIVE_SUPPORT, SectionKind::getReadOnly()); else if (Env == IsELF) EHFrameSection = - Ctx->getELFSection(".eh_frame", ELF::SHT_PROGBITS, - ELF::SHF_ALLOC, + Ctx->getELFSection(".eh_frame", EHSectionType, + EHSectionFlags, SectionKind::getDataRel()); else EHFrameSection =