#include "llvm/MC/MCSectionMachO.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::arm64 || 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() &&
COFFDebugSymbolsSection = nullptr;
- if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) ||
- (T.isOSDarwin() &&
- (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64))) {
+ if (useCompactUnwind(T)) {
CompactUnwindSection =
- Ctx->getMachOSection("__LD", "__compact_unwind",
- MachO::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;
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 |
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;
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());
- if (T.isKnownWindowsMSVCEnvironment()) {
+
+ 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_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
SectionKind::getDataRel());
- }
-
-
- if (T.isKnownWindowsMSVCEnvironment()) {
- 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 |
// 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",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getReadOnly());
+ 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 =
COFF::IMAGE_SCN_MEM_READ,
SectionKind::getMetadata());
DwarfInfoDWOSection =
- Ctx->getCOFFSection(".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
+ Ctx->getCOFFSection(".debug_info.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,
+ 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,
+ 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,
+ 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,
+ 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,
+ 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());
+
+ 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_REMOVE,
+ COFF::IMAGE_SCN_LNK_INFO |
+ COFF::IMAGE_SCN_LNK_REMOVE,
SectionKind::getMetadata());
PDataSection =
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ,
SectionKind::getDataRel());
+
TLSDataSection =
Ctx->getCOFFSection(".tls$",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
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 = FDECFIEncoding = TTypeEncoding =
DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
DwarfAccelTypesSection = nullptr; // Used only by selected targets.
- Triple T(TT);
- Triple::ArchType Arch = T.getArch();
+ 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::arm64 || Arch == Triple::aarch64 ||
Arch == Triple::ppc || Arch == Triple::ppc64 ||
Arch == Triple::UnknownArch) &&
- (T.isOSDarwin() || T.isOSBinFormatMachO())) {
+ (TT.isOSDarwin() || TT.isOSBinFormatMachO())) {
Env = IsMachO;
- InitMachOMCObjectFileInfo(T);
+ InitMachOMCObjectFileInfo(TT);
} else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
Arch == Triple::arm || Arch == Triple::thumb) &&
- (T.isOSWindows() && T.getObjectFormat() == Triple::COFF)) {
+ (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
Env = IsCOFF;
- InitCOFFMCObjectFileInfo(T);
+ InitCOFFMCObjectFileInfo(TT);
} else {
Env = IsELF;
- InitELFMCObjectFileInfo(T);
+ InitELFMCObjectFileInfo(TT);
}
}
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