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| author | dim <dim@FreeBSD.org> | 2011-06-12 15:42:51 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2011-06-12 15:42:51 +0000 |
| commit | ece02cd5829cea836e9365b0845a8ef042d17b0a (patch) | |
| tree | b3032e51d630e8070e9e08d6641648f195316a80 /lib/CodeGen/TargetLoweringObjectFileImpl.cpp | |
| parent | 2b066988909948dc3d53d01760bc2d71d32f3feb (diff) | |
| download | FreeBSD-src-ece02cd5829cea836e9365b0845a8ef042d17b0a.zip FreeBSD-src-ece02cd5829cea836e9365b0845a8ef042d17b0a.tar.gz | |
Vendor import of llvm trunk r132879:
http://llvm.org/svn/llvm-project/llvm/trunk@132879
Diffstat (limited to 'lib/CodeGen/TargetLoweringObjectFileImpl.cpp')
| -rw-r--r-- | lib/CodeGen/TargetLoweringObjectFileImpl.cpp | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp index 6ed91b0..cdac42d 100644 --- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp +++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp @@ -225,10 +225,11 @@ void TargetLoweringObjectFileELF::emitPersonalityValue(MCStreamer &Streamer, static SectionKind getELFKindForNamedSection(StringRef Name, SectionKind K) { - // FIXME: Why is this here? Codegen is should not be in the business - // of figuring section flags. If the user wrote section(".eh_frame"), - // we should just pass that to MC which will defer to the assembly - // or use its default if producing an object file. + // N.B.: The defaults used in here are no the same ones used in MC. + // We follow gcc, MC follows gas. For example, given ".section .eh_frame", + // both gas and MC will produce a section with no flags. Given + // section(".eh_frame") gcc will produce + // .section .eh_frame,"a",@progbits if (Name.empty() || Name[0] != '.') return K; // Some lame default implementation based on some magic section names. @@ -254,9 +255,6 @@ getELFKindForNamedSection(StringRef Name, SectionKind K) { Name.startswith(".llvm.linkonce.tb.")) return SectionKind::getThreadBSS(); - if (Name == ".eh_frame") - return SectionKind::getDataRel(); - return K; } @@ -484,11 +482,6 @@ getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang, void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx, const TargetMachine &TM) { - // _foo.eh symbols are currently always exported so that the linker knows - // about them. This is not necessary on 10.6 and later, but it - // doesn't hurt anything. - // FIXME: I need to get this from Triple. - IsFunctionEHSymbolGlobal = true; IsFunctionEHFrameSymbolPrivate = false; SupportsWeakOmittedEHFrame = false; @@ -994,6 +987,20 @@ void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx, getContext().getCOFFSection(".drectve", COFF::IMAGE_SCN_LNK_INFO, SectionKind::getMetadata()); + + PDataSection = + getContext().getCOFFSection(".pdata", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); + + XDataSection = + getContext().getCOFFSection(".xdata", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); } const MCSection *TargetLoweringObjectFileCOFF::getEHFrameSection() const { @@ -1004,6 +1011,28 @@ const MCSection *TargetLoweringObjectFileCOFF::getEHFrameSection() const { SectionKind::getDataRel()); } +const MCSection *TargetLoweringObjectFileCOFF::getWin64EHFuncTableSection( + StringRef suffix) const { + if (suffix == "") + return PDataSection; + return getContext().getCOFFSection((".pdata"+suffix).str(), + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); +} + +const MCSection *TargetLoweringObjectFileCOFF::getWin64EHTableSection( + StringRef suffix) const { + if (suffix == "") + return XDataSection; + return getContext().getCOFFSection((".xdata"+suffix).str(), + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); +} + static unsigned getCOFFSectionFlags(SectionKind K) { |
