#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;
// 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;
= 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::getDataRel());
+ } 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::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.
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;
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,
FaultMapSection =
Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
+
+ EHFrameSection =
+ Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
}
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::getDataRel());
+
bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
CommDirectiveSupportsAlignment = true;
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 |
".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
SectionKind::getDataRel());
-
+
StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getReadOnly());
+ SectionKind::getReadOnly());
}
void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
CommDirectiveSupportsAlignment = true;
SupportsWeakOmittedEHFrame = true;
SupportsCompactUnwindWithoutEHFrame = false;
+ OmitDwarfIfHaveCompactUnwind = false;
PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
dwarf::DW_EH_PE_absptr;
TT = TheTriple;
- Triple::ObjectFormatType Format = TT.getObjectFormat();
- switch (Format) {
- case Triple::MachO:
+ 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) &&
+ TT.isOSBinFormatMachO()) {
+ Env = IsMachO;
initMachOMCObjectFileInfo(TT);
- break;
- case Triple::COFF:
+ } 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);
- break;
- case Triple::ELF:
+ } else {
+ Env = IsELF;
initELFMCObjectFileInfo(TT);
- break;
- case Triple::UnknownObjectFormat:
- break;
}
}
return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
0, utostr(Hash));
}
-
-void MCObjectFileInfo::InitEHFrameSection() {
- Triple::ObjectFormatType Format = TT.getObjectFormat();
- switch (Format) {
- case Triple::MachO:
- 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());
- break;
- case Triple::ELF:
- EHFrameSection =
- Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
- break;
- case Triple::COFF:
- EHFrameSection =
- Ctx->getCOFFSection(".eh_frame",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
- break;
- case Triple::UnknownObjectFormat:
- break;
- }
-}
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