X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCObjectFileInfo.cpp;h=96b62f19d9344430dea1a5599e50243ba3c7e98d;hb=7ab184a2a1cbf5b5b340d663e07550659438ed7c;hp=0cf98bd3b2aa3c4e2aa20262c60f14c0ab73d0a0;hpb=36c62d3cbe04fc2bde371fa4bda4085baffc799f;p=oota-llvm.git diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp index 0cf98bd3b2a..96b62f19d93 100644 --- a/lib/MC/MCObjectFileInfo.cpp +++ b/lib/MC/MCObjectFileInfo.cpp @@ -8,12 +8,12 @@ //===----------------------------------------------------------------------===// #include "llvm/MC/MCObjectFileInfo.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) { @@ -56,8 +56,8 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { TLSThreadInitSection = Ctx->getMachOSection("__DATA", "__thread_init", - MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, - SectionKind::getDataRel()); + MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, + SectionKind::getDataRel()); CStringSection // .cstring = Ctx->getMachOSection("__TEXT", "__cstring", @@ -145,13 +145,35 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0, SectionKind::getReadOnlyWithRel()); - if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) + 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", + MCSectionMachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + DwarfAccelObjCSection = + Ctx->getMachOSection("__DWARF", "__apple_objc", + MCSectionMachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + // 16 character section limit... + DwarfAccelNamespaceSection = + Ctx->getMachOSection("__DWARF", "__apple_namespac", + MCSectionMachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + DwarfAccelTypesSection = + Ctx->getMachOSection("__DWARF", "__apple_types", + MCSectionMachO::S_ATTR_DEBUG, + SectionKind::getMetadata()); + DwarfAbbrevSection = Ctx->getMachOSection("__DWARF", "__debug_abbrev", MCSectionMachO::S_ATTR_DEBUG, @@ -205,22 +227,29 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) { } 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) @@ -242,12 +271,64 @@ 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) { + // 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) { + 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::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 = @@ -354,8 +435,9 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0, SectionKind::getMetadata()); DwarfStrSection = - Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, 0, - SectionKind::getMetadata()); + Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, + ELF::SHF_MERGE | ELF::SHF_STRINGS, + SectionKind::getMergeable1ByteCString()); DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0, SectionKind::getMetadata()); @@ -368,6 +450,46 @@ 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()); } @@ -390,18 +512,36 @@ 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.getOS() == Triple::Win32) { + StaticCtorSection = + Ctx->getCOFFSection(".CRT$XCU", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getReadOnly()); + } else { + StaticCtorSection = + Ctx->getCOFFSection(".ctors", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); + } + + + if (T.getOS() == Triple::Win32) { + StaticDtorSection = + Ctx->getCOFFSection(".CRT$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 @@ -478,12 +618,16 @@ 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, @@ -505,7 +649,14 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding = TTypeEncoding = dwarf::DW_EH_PE_absptr; - EHFrameSection = 0; // Created on demand. + CompactUnwindDwarfEHFrameOnly = 0; + + 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. Triple T(TT); Triple::ArchType Arch = T.getArch(); @@ -519,6 +670,7 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm, Env = IsMachO; InitMachOMCObjectFileInfo(T); } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) && + (T.getEnvironment() != Triple::ELF) && (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin || T.getOS() == Triple::Win32)) { Env = IsCOFF; @@ -540,8 +692,8 @@ void MCObjectFileInfo::InitEHFrameSection() { 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 =