diff options
Diffstat (limited to 'contrib/llvm/lib/MC/MCObjectFileInfo.cpp')
| -rw-r--r-- | contrib/llvm/lib/MC/MCObjectFileInfo.cpp | 108 |
1 files changed, 70 insertions, 38 deletions
diff --git a/contrib/llvm/lib/MC/MCObjectFileInfo.cpp b/contrib/llvm/lib/MC/MCObjectFileInfo.cpp index f86f7e4..d05bcea 100644 --- a/contrib/llvm/lib/MC/MCObjectFileInfo.cpp +++ b/contrib/llvm/lib/MC/MCObjectFileInfo.cpp @@ -30,7 +30,7 @@ static bool useCompactUnwind(const Triple &T) { return true; // armv7k always has it. - if (T.isWatchOS()) + if (T.isWatchABI()) return true; // Use it on newer version of OS X. @@ -45,7 +45,7 @@ static bool useCompactUnwind(const Triple &T) { return false; } -void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) { +void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) { // MachO SupportsWeakOmittedEHFrame = false; @@ -58,7 +58,7 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) { if (T.isOSDarwin() && T.getArch() == Triple::aarch64) SupportsCompactUnwindWithoutEHFrame = true; - if (T.isWatchOS()) + if (T.isWatchABI()) OmitDwarfIfHaveCompactUnwind = true; PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel @@ -172,7 +172,12 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) { MachO::S_NON_LAZY_SYMBOL_POINTERS, SectionKind::getMetadata()); - if (RelocM == Reloc::Static) { + ThreadLocalPointerSection + = Ctx->getMachOSection("__DATA", "__thread_ptr", + MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, + SectionKind::getMetadata()); + + if (!PositionIndependent) { StaticCtorSection = Ctx->getMachOSection("__TEXT", "__constructor", 0, SectionKind::getData()); StaticDtorSection = Ctx->getMachOSection("__TEXT", "__destructor", 0, @@ -191,6 +196,7 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) { SectionKind::getReadOnlyWithRel()); COFFDebugSymbolsSection = nullptr; + COFFDebugTypesSection = nullptr; if (useCompactUnwind(T)) { CompactUnwindSection = @@ -258,7 +264,7 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) { SectionKind::getMetadata(), "debug_range"); DwarfMacinfoSection = Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG, - SectionKind::getMetadata()); + SectionKind::getMetadata(), "debug_macinfo"); DwarfDebugInlineSection = Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); @@ -277,7 +283,7 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) { TLSExtraDataSection = TLSTLVSection; } -void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { +void MCObjectFileInfo::initELFMCObjectFileInfo(const Triple &T) { switch (T.getArch()) { case Triple::mips: case Triple::mipsel: @@ -307,18 +313,21 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { // Fallthrough if not using EHABI case Triple::ppc: case 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; - TTypeEncoding = (RelocM == Reloc::PIC_) - ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4 - : dwarf::DW_EH_PE_absptr; + PersonalityEncoding = PositionIndependent + ? dwarf::DW_EH_PE_indirect | + dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4 + : dwarf::DW_EH_PE_absptr; + LSDAEncoding = PositionIndependent + ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4 + : dwarf::DW_EH_PE_absptr; + TTypeEncoding = PositionIndependent + ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | + dwarf::DW_EH_PE_sdata4 + : dwarf::DW_EH_PE_absptr; break; case Triple::x86_64: - if (RelocM == Reloc::PIC_) { + if (PositionIndependent) { 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); @@ -338,12 +347,24 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; } break; + case Triple::hexagon: + PersonalityEncoding = dwarf::DW_EH_PE_absptr; + LSDAEncoding = dwarf::DW_EH_PE_absptr; + FDECFIEncoding = dwarf::DW_EH_PE_absptr; + TTypeEncoding = dwarf::DW_EH_PE_absptr; + if (PositionIndependent) { + PersonalityEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel; + LSDAEncoding |= dwarf::DW_EH_PE_pcrel; + FDECFIEncoding |= dwarf::DW_EH_PE_pcrel; + TTypeEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel; + } + break; case Triple::aarch64: case 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_) { + if (PositionIndependent) { 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; @@ -355,6 +376,11 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { TTypeEncoding = dwarf::DW_EH_PE_absptr; } break; + case Triple::lanai: + LSDAEncoding = dwarf::DW_EH_PE_absptr; + PersonalityEncoding = dwarf::DW_EH_PE_absptr; + TTypeEncoding = dwarf::DW_EH_PE_absptr; + break; case Triple::mips: case Triple::mipsel: case Triple::mips64: @@ -380,7 +406,7 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { break; case Triple::sparcel: case Triple::sparc: - if (RelocM == Reloc::PIC_) { + if (PositionIndependent) { 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; @@ -394,7 +420,7 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { break; case Triple::sparcv9: LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; - if (RelocM == Reloc::PIC_) { + if (PositionIndependent) { PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | @@ -407,7 +433,7 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { case Triple::systemz: // All currently-defined code models guarantee that 4-byte PC-relative // values will be in range. - if (RelocM == Reloc::PIC_) { + if (PositionIndependent) { 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; @@ -468,6 +494,10 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { 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, ""); + StaticCtorSection = Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS, ELF::SHF_ALLOC | ELF::SHF_WRITE); @@ -484,6 +514,7 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { ELF::SHF_ALLOC); COFFDebugSymbolsSection = nullptr; + COFFDebugTypesSection = nullptr; // Debug Info Sections. DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0, @@ -508,8 +539,8 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0); DwarfRangesSection = Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, "debug_range"); - DwarfMacinfoSection = - Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0); + DwarfMacinfoSection = Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, + 0, "debug_macinfo"); // DWARF5 Experimental Debug Info @@ -558,13 +589,16 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) { Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags); } -void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) { +void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) { EHFrameSection = Ctx->getCOFFSection( ".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE, SectionKind::getData()); - bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb; + // 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; CommDirectiveSupportsAlignment = true; @@ -575,7 +609,7 @@ void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) { SectionKind::getBSS()); TextSection = Ctx->getCOFFSection( ".text", - (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) | + (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()); @@ -623,9 +657,14 @@ void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) { // Debug info. COFFDebugSymbolsSection = - Ctx->getCOFFSection(".debug$S", COFF::IMAGE_SCN_MEM_DISCARDABLE | - COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | - COFF::IMAGE_SCN_MEM_READ, + Ctx->getCOFFSection(".debug$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()); DwarfAbbrevSection = Ctx->getCOFFSection( @@ -693,7 +732,7 @@ void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) { ".debug_macinfo", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ, - SectionKind::getMetadata()); + SectionKind::getMetadata(), "debug_macinfo"); DwarfInfoDWOSection = Ctx->getCOFFSection( ".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | @@ -791,11 +830,10 @@ void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) { SectionKind::getReadOnly()); } -void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple, - Reloc::Model relocm, +void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple, bool PIC, CodeModel::Model cm, MCContext &ctx) { - RelocM = relocm; + PositionIndependent = PIC; CMModel = cm; Ctx = &ctx; @@ -842,12 +880,6 @@ void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple, } } -void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model RM, - CodeModel::Model CM, - MCContext &ctx) { - InitMCObjectFileInfo(Triple(TT), RM, CM, ctx); -} - MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const { return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP, 0, utostr(Hash)); |
