#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/Support/COFF.h"
+
using namespace llvm;
static bool useCompactUnwind(const Triple &T) {
if (T.getArch() == Triple::aarch64)
return true;
+ // armv7k always has it.
+ if (T.isWatchOS())
+ return true;
+
// Use it on newer version of OS X.
if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
return true;
return false;
}
-void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
+void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) {
// MachO
SupportsWeakOmittedEHFrame = false;
+ EHFrameSection = Ctx->getMachOSection(
+ "__TEXT", "__eh_frame",
+ MachO::S_COALESCED | MachO::S_ATTR_NO_TOC |
+ MachO::S_ATTR_STRIP_STATIC_SYMS | MachO::S_ATTR_LIVE_SUPPORT,
+ SectionKind::getReadOnly());
+
if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
SupportsCompactUnwindWithoutEHFrame = true;
+ if (T.isWatchOS())
+ OmitDwarfIfHaveCompactUnwind = true;
+
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
| dwarf::DW_EH_PE_sdata4;
LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
MachO::S_ATTR_PURE_INSTRUCTIONS,
SectionKind::getText());
DataSection // .data
- = Ctx->getMachOSection("__DATA", "__data", 0,
- SectionKind::getDataRel());
+ = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getData());
// BSSSection might not be expected initialized on msvc.
BSSSection = nullptr;
TLSDataSection // .tdata
- = Ctx->getMachOSection("__DATA", "__thread_data",
- MachO::S_THREAD_LOCAL_REGULAR,
- SectionKind::getDataRel());
+ = Ctx->getMachOSection("__DATA", "__thread_data",
+ MachO::S_THREAD_LOCAL_REGULAR,
+ SectionKind::getData());
TLSBSSSection // .tbss
= Ctx->getMachOSection("__DATA", "__thread_bss",
MachO::S_THREAD_LOCAL_ZEROFILL,
// TODO: Verify datarel below.
TLSTLVSection // .tlv
- = Ctx->getMachOSection("__DATA", "__thread_vars",
- MachO::S_THREAD_LOCAL_VARIABLES,
- SectionKind::getDataRel());
+ = Ctx->getMachOSection("__DATA", "__thread_vars",
+ MachO::S_THREAD_LOCAL_VARIABLES,
+ SectionKind::getData());
- TLSThreadInitSection
- = Ctx->getMachOSection("__DATA", "__thread_init",
- MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
- SectionKind::getDataRel());
+ TLSThreadInitSection = Ctx->getMachOSection(
+ "__DATA", "__thread_init", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
+ SectionKind::getData());
CStringSection // .cstring
= Ctx->getMachOSection("__TEXT", "__cstring",
= Ctx->getMachOSection("__TEXT", "__const", 0,
SectionKind::getReadOnly());
- TextCoalSection
- = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
- MachO::S_COALESCED |
- MachO::S_ATTR_PURE_INSTRUCTIONS,
- SectionKind::getText());
- ConstTextCoalSection
- = Ctx->getMachOSection("__TEXT", "__const_coal",
- MachO::S_COALESCED,
- SectionKind::getReadOnly());
+ // If the target is not powerpc, map the coal sections to the non-coal
+ // sections.
+ //
+ // "__TEXT/__textcoal_nt" => section "__TEXT/__text"
+ // "__TEXT/__const_coal" => section "__TEXT/__const"
+ // "__DATA/__datacoal_nt" => section "__DATA/__data"
+ Triple::ArchType ArchTy = T.getArch();
+
+ if (ArchTy == Triple::ppc || ArchTy == Triple::ppc64) {
+ TextCoalSection
+ = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
+ MachO::S_COALESCED |
+ MachO::S_ATTR_PURE_INSTRUCTIONS,
+ SectionKind::getText());
+ ConstTextCoalSection
+ = Ctx->getMachOSection("__TEXT", "__const_coal",
+ MachO::S_COALESCED,
+ SectionKind::getReadOnly());
+ DataCoalSection = Ctx->getMachOSection(
+ "__DATA", "__datacoal_nt", MachO::S_COALESCED, SectionKind::getData());
+ } else {
+ TextCoalSection = TextSection;
+ ConstTextCoalSection = ReadOnlySection;
+ DataCoalSection = DataSection;
+ }
+
ConstDataSection // .const_data
= Ctx->getMachOSection("__DATA", "__const", 0,
SectionKind::getReadOnlyWithRel());
- DataCoalSection
- = Ctx->getMachOSection("__DATA","__datacoal_nt",
- MachO::S_COALESCED,
- SectionKind::getDataRel());
DataCommonSection
= Ctx->getMachOSection("__DATA","__common",
MachO::S_ZEROFILL,
SectionKind::getMetadata());
if (RelocM == Reloc::Static) {
- StaticCtorSection
- = Ctx->getMachOSection("__TEXT", "__constructor", 0,
- SectionKind::getDataRel());
- StaticDtorSection
- = Ctx->getMachOSection("__TEXT", "__destructor", 0,
- SectionKind::getDataRel());
+ StaticCtorSection = Ctx->getMachOSection("__TEXT", "__constructor", 0,
+ SectionKind::getData());
+ StaticDtorSection = Ctx->getMachOSection("__TEXT", "__destructor", 0,
+ SectionKind::getData());
} else {
- StaticCtorSection
- = Ctx->getMachOSection("__DATA", "__mod_init_func",
- MachO::S_MOD_INIT_FUNC_POINTERS,
- SectionKind::getDataRel());
- StaticDtorSection
- = Ctx->getMachOSection("__DATA", "__mod_term_func",
- MachO::S_MOD_TERM_FUNC_POINTERS,
- SectionKind::getDataRel());
+ StaticCtorSection = Ctx->getMachOSection("__DATA", "__mod_init_func",
+ MachO::S_MOD_INIT_FUNC_POINTERS,
+ SectionKind::getData());
+ StaticDtorSection = Ctx->getMachOSection("__DATA", "__mod_term_func",
+ MachO::S_MOD_TERM_FUNC_POINTERS,
+ SectionKind::getData());
}
// Exception Handling.
SectionKind::getReadOnly());
if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
- CompactUnwindDwarfEHFrameOnly = 0x04000000;
+ CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
else if (T.getArch() == Triple::aarch64)
- CompactUnwindDwarfEHFrameOnly = 0x03000000;
+ CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
+ else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
+ CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
}
// Debug Information.
StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
0, SectionKind::getMetadata());
+ FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
+ 0, SectionKind::getMetadata());
+
TLSExtraDataSection = TLSTLVSection;
}
-void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
+void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) {
switch (T.getArch()) {
case Triple::mips:
case Triple::mipsel:
FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
: dwarf::DW_EH_PE_sdata4);
-
break;
default:
FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
case Triple::mipsel:
case Triple::mips64:
case Triple::mips64el:
- // 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.
+ // MIPS uses indirect pointer to refer personality functions and types, so
+ // that the eh_frame section can be read-only. DW.ref.personality will be
+ // generated for relocation.
PersonalityEncoding = dwarf::DW_EH_PE_indirect;
+ // FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
+ // identify N64 from just a triple.
+ TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+ dwarf::DW_EH_PE_sdata4;
+ // We don't support PC-relative LSDA references in GAS so we use the default
+ // DW_EH_PE_absptr for those.
break;
case Triple::ppc64:
case Triple::ppc64le:
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_udata8;
break;
+ case Triple::sparcel:
case Triple::sparc:
if (RelocM == Reloc::PIC_) {
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
break;
}
+ unsigned EHSectionType = T.getArch() == Triple::x86_64
+ ? ELF::SHT_X86_64_UNWIND
+ : ELF::SHT_PROGBITS;
+
// Solaris requires different flags for .eh_frame to seemingly every other
// platform.
- EHSectionType = ELF::SHT_PROGBITS;
- EHSectionFlags = ELF::SHF_ALLOC;
- if (T.isOSSolaris()) {
- if (T.getArch() == Triple::x86_64)
- EHSectionType = ELF::SHT_X86_64_UNWIND;
- else
- EHSectionFlags |= ELF::SHF_WRITE;
- }
-
+ unsigned EHSectionFlags = ELF::SHF_ALLOC;
+ if (T.isOSSolaris() && T.getArch() != Triple::x86_64)
+ EHSectionFlags |= ELF::SHF_WRITE;
// ELF
BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
TLSBSSSection = Ctx->getELFSection(
".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
- DataRelSection = Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC | ELF::SHF_WRITE);
-
- DataRelLocalSection = Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC | ELF::SHF_WRITE);
-
DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
ELF::SHF_ALLOC | ELF::SHF_WRITE);
- DataRelROLocalSection = Ctx->getELFSection(
- ".data.rel.ro.local", ELF::SHT_PROGBITS, ELF::SHF_ALLOC | ELF::SHF_WRITE);
-
MergeableConst4Section =
Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
ELF::SHF_ALLOC | ELF::SHF_MERGE, 4, "");
"section_abbrev");
DwarfInfoSection =
Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, "section_info");
- DwarfLineSection =
- Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0, "section_line");
+ DwarfLineSection = Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0);
DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
DwarfPubNamesSection =
Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
DwarfGnuPubTypesSection =
Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
- DwarfStrSection = Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
- ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "",
- "info_string");
- DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
- "section_debug_loc");
+ DwarfStrSection =
+ Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
+ ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
+ DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0);
DwarfARangesSection =
Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
DwarfRangesSection =
Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, "types_begin");
// Fission Sections
- DwarfInfoDWOSection = Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS,
- 0, "section_info_dwo");
- DwarfTypesDWOSection = Ctx->getELFSection(
- ".debug_types.dwo", ELF::SHT_PROGBITS, 0, "section_types_dwo");
- DwarfAbbrevDWOSection = Ctx->getELFSection(
- ".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0, "section_abbrev_dwo");
- DwarfStrDWOSection = Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
- ELF::SHF_MERGE | ELF::SHF_STRINGS, 1,
- "", "skel_string");
+ DwarfInfoDWOSection =
+ Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0);
+ DwarfTypesDWOSection =
+ Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0);
+ DwarfAbbrevDWOSection =
+ Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0);
+ DwarfStrDWOSection =
+ Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
+ ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
DwarfLineDWOSection =
Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
DwarfLocDWOSection =
StackMapSection =
Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
+
+ FaultMapSection =
+ Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
+
+ EHFrameSection =
+ Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
}
-void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
+void MCObjectFileInfo::initCOFFMCObjectFileInfo(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;
CommDirectiveSupportsAlignment = true;
DataSection = Ctx->getCOFFSection(
".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
+ SectionKind::getData());
ReadOnlySection = Ctx->getCOFFSection(
".rdata", 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());
+ SectionKind::getData());
StaticDtorSection = Ctx->getCOFFSection(
".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
+ SectionKind::getData());
}
// FIXME: We're emitting LSDA info into a readonly section on COFF, even
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;
+ LSDASection = nullptr;
} else {
LSDASection = Ctx->getCOFFSection(".gcc_except_table",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
".debug_types.dwo",
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
+ SectionKind::getMetadata(), "section_types_dwo");
DwarfAbbrevDWOSection = Ctx->getCOFFSection(
".debug_abbrev.dwo",
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
PDataSection = Ctx->getCOFFSection(
".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getDataRel());
+ SectionKind::getData());
XDataSection = Ctx->getCOFFSection(
".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getDataRel());
+ SectionKind::getData());
+
+ SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO,
+ SectionKind::getMetadata());
TLSDataSection = Ctx->getCOFFSection(
".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
+ SectionKind::getData());
+
+ StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getReadOnly());
}
-void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
+void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
+ Reloc::Model relocm,
CodeModel::Model cm,
MCContext &ctx) {
RelocM = relocm;
CommDirectiveSupportsAlignment = true;
SupportsWeakOmittedEHFrame = true;
SupportsCompactUnwindWithoutEHFrame = false;
+ OmitDwarfIfHaveCompactUnwind = false;
PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
dwarf::DW_EH_PE_absptr;
DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
DwarfAccelTypesSection = nullptr; // Used only by selected targets.
- TT = Triple(T);
+ TT = TheTriple;
Triple::ArchType Arch = TT.getArch();
// FIXME: Checking for Arch here to filter out bogus triples such as
Arch == Triple::aarch64 ||
Arch == Triple::ppc || Arch == Triple::ppc64 ||
Arch == Triple::UnknownArch) &&
- (TT.isOSDarwin() || TT.isOSBinFormatMachO())) {
+ TT.isOSBinFormatMachO()) {
Env = IsMachO;
- InitMachOMCObjectFileInfo(TT);
+ 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(TT);
+ initCOFFMCObjectFileInfo(TT);
} else {
Env = IsELF;
- InitELFMCObjectFileInfo(TT);
+ initELFMCObjectFileInfo(TT);
}
}
-const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
- return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
- 0, utostr(Hash));
+void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model RM,
+ CodeModel::Model CM,
+ MCContext &ctx) {
+ InitMCObjectFileInfo(Triple(TT), RM, CM, ctx);
}
-void MCObjectFileInfo::InitEHFrameSection() {
- if (Env == IsMachO)
- EHFrameSection =
- Ctx->getMachOSection("__TEXT", "__eh_frame",
- 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", EHSectionType, EHSectionFlags);
- else
- EHFrameSection =
- Ctx->getCOFFSection(".eh_frame",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
+MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
+ return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
+ 0, utostr(Hash));
}
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