X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCObjectFileInfo.cpp;h=931b3544e34f0455e0ec9fb7bfcf20b9d4deece3;hb=cac25de43db7faec738e9acb0cb9d0dbbc46f537;hp=ae0abde86ad6e9294ef06bc2279a5f9f3f4e9152;hpb=72062f5744557e270a38192554c3126ea5f97434;p=oota-llvm.git diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp index ae0abde86ad..931b3544e34 100644 --- a/lib/MC/MCObjectFileInfo.cpp +++ b/lib/MC/MCObjectFileInfo.cpp @@ -8,6 +8,7 @@ //===----------------------------------------------------------------------===// #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" @@ -39,6 +40,9 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getDataRel()); + // BSSSection might not be expected initialized on msvc. + BSSSection = 0; + TLSDataSection // .tdata = Ctx->getMachOSection("__DATA", "__thread_data", MCSectionMachO::S_THREAD_LOCAL_REGULAR, @@ -75,15 +79,10 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { 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()); + SixteenByteConstantSection // .literal16 + = Ctx->getMachOSection("__TEXT", "__literal16", + MCSectionMachO::S_16BYTE_LITERALS, + SectionKind::getMergeableConst16()); ReadOnlySection // .const = Ctx->getMachOSection("__TEXT", "__const", 0, @@ -145,12 +144,18 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0, SectionKind::getReadOnlyWithRel()); - if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) + COFFDebugSymbolsSection = 0; + + if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) { CompactUnwindSection = Ctx->getMachOSection("__LD", "__compact_unwind", MCSectionMachO::S_ATTR_DEBUG, SectionKind::getReadOnly()); + if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86) + CompactUnwindDwarfEHFrameOnly = 0x04000000; + } + // Debug Information. DwarfAccelNamesSection = Ctx->getMachOSection("__DWARF", "__apple_names", @@ -186,10 +191,22 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { 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()); + DwarfGnuPubNamesSection = + Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", + MCSectionMachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + DwarfGnuPubTypesSection = + Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", + MCSectionMachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); DwarfStrSection = Ctx->getMachOSection("__DWARF", "__debug_str", MCSectionMachO::S_ATTR_DEBUG, @@ -214,11 +231,23 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { Ctx->getMachOSection("__DWARF", "__debug_inlined", MCSectionMachO::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 @@ -226,15 +255,13 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { 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; } 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) @@ -257,8 +284,6 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; } } else if (T.getArch() == Triple::aarch64) { - FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; - // 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. @@ -275,14 +300,56 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { FDEEncoding = dwarf::DW_EH_PE_udata4; TTypeEncoding = dwarf::DW_EH_PE_absptr; } - } else if (T.getArch() == Triple::ppc64) { + } 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; - FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; 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 @@ -387,6 +454,8 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { ELF::SHF_ALLOC, SectionKind::getReadOnly()); + COFFDebugSymbolsSection = 0; + // Debug Info Sections. DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0, @@ -400,9 +469,18 @@ 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, @@ -464,6 +542,12 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { // 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 | @@ -523,6 +607,13 @@ 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 | @@ -543,11 +634,26 @@ 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 | @@ -613,6 +719,8 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding = TTypeEncoding = dwarf::DW_EH_PE_absptr; + CompactUnwindDwarfEHFrameOnly = 0; + EHFrameSection = 0; // Created on demand. CompactUnwindSection = 0; // Used only by selected targets. DwarfAccelNamesSection = 0; // Used only by selected targets. @@ -643,6 +751,18 @@ 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 =