//===----------------------------------------------------------------------===//
#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCAsmInfo.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;
+static bool useCompactUnwind(const Triple &T) {
+ // Only on darwin.
+ if (!T.isOSDarwin())
+ return false;
+
+ // aarch64 always has it.
+ if (T.getArch() == Triple::aarch64)
+ return true;
+
+ // Use it on newer version of OS X.
+ if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
+ return true;
+
+ // And the iOS simulator.
+ if (T.isiOS() &&
+ (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86))
+ return true;
+
+ return false;
+}
+
void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
// MachO
- IsFunctionEHFrameSymbolPrivate = false;
SupportsWeakOmittedEHFrame = false;
+ if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
+ 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;
+ LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_sdata4;
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,
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) {
} 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());
}
LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
SectionKind::getReadOnlyWithRel());
- if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
+ COFFDebugSymbolsSection = nullptr;
+
+ if (useCompactUnwind(T)) {
CompactUnwindSection =
- Ctx->getMachOSection("__LD", "__compact_unwind",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getReadOnly());
+ Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
+ SectionKind::getReadOnly());
+
+ if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
+ CompactUnwindDwarfEHFrameOnly = 0x04000000;
+ else if (T.getArch() == Triple::aarch64)
+ CompactUnwindDwarfEHFrameOnly = 0x03000000;
+ }
// Debug Information.
+ DwarfAccelNamesSection =
+ Ctx->getMachOSection("__DWARF", "__apple_names",
+ MachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ DwarfAccelObjCSection =
+ Ctx->getMachOSection("__DWARF", "__apple_objc",
+ MachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ // 16 character section limit...
+ DwarfAccelNamespaceSection =
+ Ctx->getMachOSection("__DWARF", "__apple_namespac",
+ MachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ DwarfAccelTypesSection =
+ Ctx->getMachOSection("__DWARF", "__apple_types",
+ 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",
- MCSectionMachO::S_ATTR_DEBUG,
+ 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::x86) {
+ switch (T.getArch()) {
+ case Triple::mips:
+ case Triple::mipsel:
+ FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
+ break;
+ case Triple::mips64:
+ case Triple::mips64el:
+ FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
+ break;
+ default:
+ FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+ break;
+ }
+
+ switch (T.getArch()) {
+ case Triple::arm:
+ case Triple::armeb:
+ case Triple::thumb:
+ case Triple::thumbeb:
+ if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
+ break;
+ // 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;
+ ? 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;
-
+ ? 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_) {
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
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);
? 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;
}
+ 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_) {
+ 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;
+ 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;
+ TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ }
+ break;
+ case Triple::mips:
+ case Triple::mipsel:
+ // MIPS uses indirect pointer to refer personality functions, so that the
+ // eh_frame section can be read-only. DW.ref.personality will be generated
+ // for relocation.
+ PersonalityEncoding = dwarf::DW_EH_PE_indirect;
+ break;
+ case Triple::ppc64:
+ case 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;
+ TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+ dwarf::DW_EH_PE_udata8;
+ break;
+ case 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;
+ 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;
+ TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ }
+ break;
+ case 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;
+ TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+ dwarf::DW_EH_PE_sdata4;
+ } else {
+ PersonalityEncoding = dwarf::DW_EH_PE_absptr;
+ TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ }
+ break;
+ case 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;
+ 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;
+ TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ }
+ break;
+ default:
+ break;
}
+ // 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 =
ELF::SHF_ALLOC,
SectionKind::getReadOnly());
+ COFFDebugSymbolsSection = nullptr;
+
// Debug Info Sections.
DwarfAbbrevSection =
Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
DwarfPubTypesSection =
Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
- DwarfStrSection =
- Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
+ 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,
+ SectionKind::getMergeable1ByteCString());
DwarfLocSection =
Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
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());
+ DwarfTypesDWOSection =
+ Ctx->getELFSection(".debug_types.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) {
+ bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
+
+ // 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",
+ (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT
+ : (COFF::SectionCharacteristics)0) |
COFF::IMAGE_SCN_CNT_CODE |
COFF::IMAGE_SCN_MEM_EXECUTE |
COFF::IMAGE_SCN_MEM_READ,
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() || T.isWindowsItaniumEnvironment()) {
+ StaticCtorSection =
+ Ctx->getCOFFSection(".CRT$XCU",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getReadOnly());
+ StaticDtorSection =
+ Ctx->getCOFFSection(".CRT$XTX",
+ 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());
+ 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",
+ assert(T.isOSWindows() && "Windows is the only supported COFF target");
+ if (T.getArch() == Triple::x86_64) {
+ // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
+ LSDASection = 0;
+ } else {
+ LSDASection = Ctx->getCOFFSection(".gcc_except_table",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ 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::getReadOnly());
+ SectionKind::getMetadata());
- // Debug info.
DwarfAbbrevSection =
Ctx->getCOFFSection(".debug_abbrev",
COFF::IMAGE_SCN_MEM_DISCARDABLE |
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 |
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());
+ DwarfTypesDWOSection =
+ Ctx->getCOFFSection(".debug_types.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",
- COFF::IMAGE_SCN_LNK_INFO,
+ COFF::IMAGE_SCN_LNK_INFO |
+ COFF::IMAGE_SCN_LNK_REMOVE,
SectionKind::getMetadata());
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,
SectionKind::getDataRel());
}
-void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
+void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
CodeModel::Model cm,
MCContext &ctx) {
RelocM = relocm;
// Common.
CommDirectiveSupportsAlignment = true;
SupportsWeakOmittedEHFrame = true;
- IsFunctionEHFrameSymbolPrivate = true;
+ SupportsCompactUnwindWithoutEHFrame = false;
- PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
- TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
+ dwarf::DW_EH_PE_absptr;
- EHFrameSection = 0; // Created on demand.
+ CompactUnwindDwarfEHFrameOnly = 0;
- Triple T(TT);
- Triple::ArchType Arch = T.getArch();
+ 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.
+
+ TT = Triple(T);
+
+ Triple::ArchType Arch = TT.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::aarch64 ||
Arch == Triple::ppc || Arch == Triple::ppc64 ||
Arch == Triple::UnknownArch) &&
- (T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) {
+ (TT.isOSDarwin() || TT.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)) {
+ InitMachOMCObjectFileInfo(TT);
+ } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
+ Arch == Triple::arm || Arch == Triple::thumb) &&
+ (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
Env = IsCOFF;
- InitCOFFMCObjectFileInfo(T);
+ InitCOFFMCObjectFileInfo(TT);
} else {
Env = IsELF;
- InitELFMCObjectFileInfo(T);
+ InitELFMCObjectFileInfo(TT);
}
}
+const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
+ return Ctx->getELFSection(".debug_types", 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 =
projects / oota-llvm.git / blobdiff