//
//===----------------------------------------------------------------------===//
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAsmLayout.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionCOFF.h"
-#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbolCOFF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/MC/MCWinCOFFStreamer.h"
#include "llvm/Support/COFF.h"
namespace llvm {
MCWinCOFFStreamer::MCWinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
- MCCodeEmitter &CE, raw_ostream &OS)
+ MCCodeEmitter &CE, raw_pwrite_stream &OS)
: MCObjectStreamer(Context, MAB, OS, &CE), CurSymbol(nullptr) {}
void MCWinCOFFStreamer::EmitInstToData(const MCInst &Inst,
SmallVector<MCFixup, 4> Fixups;
SmallString<256> Code;
raw_svector_ostream VecOS(Code);
- getAssembler().getEmitter().EncodeInstruction(Inst, VecOS, Fixups, STI);
+ getAssembler().getEmitter().encodeInstruction(Inst, VecOS, Fixups, STI);
VecOS.flush();
// Add the fixups and data.
DF->getContents().append(Code.begin(), Code.end());
}
-void MCWinCOFFStreamer::InitSections() {
+void MCWinCOFFStreamer::InitSections(bool NoExecStack) {
// FIXME: this is identical to the ELF one.
// This emulates the same behavior of GNU as. This makes it easier
// to compare the output as the major sections are in the same order.
Symbol->getSection().getVariant() == MCSection::SV_COFF) &&
"Got non-COFF section in the COFF backend!");
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
+ getAssembler().registerSymbol(*Symbol);
switch (Attribute) {
default: return false;
case MCSA_WeakReference:
case MCSA_Weak:
- SD.modifyFlags(COFF::SF_WeakExternal, COFF::SF_WeakExternal);
- SD.setExternal(true);
+ cast<MCSymbolCOFF>(Symbol)->setIsWeakExternal();
+ Symbol->setExternal(true);
break;
case MCSA_Global:
- SD.setExternal(true);
+ Symbol->setExternal(true);
break;
}
if (!CurSymbol)
FatalError("storage class specified outside of symbol definition");
- if (StorageClass & ~0xff)
- FatalError(Twine("storage class value '") + itostr(StorageClass) +
+ if (StorageClass & ~COFF::SSC_Invalid)
+ FatalError("storage class value '" + Twine(StorageClass) +
"' out of range");
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*CurSymbol);
- SD.modifyFlags(StorageClass << COFF::SF_ClassShift, COFF::SF_ClassMask);
+ getAssembler().registerSymbol(*CurSymbol);
+ cast<MCSymbolCOFF>(CurSymbol)->setClass((uint16_t)StorageClass);
}
void MCWinCOFFStreamer::EmitCOFFSymbolType(int Type) {
FatalError("symbol type specified outside of a symbol definition");
if (Type & ~0xffff)
- FatalError(Twine("type value '") + itostr(Type) + "' out of range");
+ FatalError("type value '" + Twine(Type) + "' out of range");
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*CurSymbol);
- SD.modifyFlags(Type << COFF::SF_TypeShift, COFF::SF_TypeMask);
+ getAssembler().registerSymbol(*CurSymbol);
+ cast<MCSymbolCOFF>(CurSymbol)->setType((uint16_t)Type);
}
void MCWinCOFFStreamer::EndCOFFSymbolDef() {
CurSymbol = nullptr;
}
+void MCWinCOFFStreamer::EmitCOFFSafeSEH(MCSymbol const *Symbol) {
+ // SafeSEH is a feature specific to 32-bit x86. It does not exist (and is
+ // unnecessary) on all platforms which use table-based exception dispatch.
+ if (getContext().getObjectFileInfo()->getTargetTriple().getArch() !=
+ Triple::x86)
+ return;
+
+ const MCSymbolCOFF *CSymbol = cast<MCSymbolCOFF>(Symbol);
+ if (CSymbol->isSafeSEH())
+ return;
+
+ MCSection *SXData = getContext().getObjectFileInfo()->getSXDataSection();
+ getAssembler().registerSection(*SXData);
+ if (SXData->getAlignment() < 4)
+ SXData->setAlignment(4);
+
+ new MCSafeSEHFragment(Symbol, SXData);
+
+ getAssembler().registerSymbol(*Symbol);
+ CSymbol->setIsSafeSEH();
+
+ // The Microsoft linker requires that the symbol type of a handler be
+ // function. Go ahead and oblige it here.
+ CSymbol->setType(COFF::IMAGE_SYM_DTYPE_FUNCTION
+ << COFF::SCT_COMPLEX_TYPE_SHIFT);
+}
+
void MCWinCOFFStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
MCDataFragment *DF = getOrCreateDataFragment();
- const MCSymbolRefExpr *SRE = MCSymbolRefExpr::Create(Symbol, getContext());
- MCFixup Fixup = MCFixup::Create(DF->getContents().size(), SRE, FK_SecRel_2);
+ const MCSymbolRefExpr *SRE = MCSymbolRefExpr::create(Symbol, getContext());
+ MCFixup Fixup = MCFixup::create(DF->getContents().size(), SRE, FK_SecRel_2);
DF->getFixups().push_back(Fixup);
- DF->getContents().resize(DF->getContents().size() + 4, 0);
+ DF->getContents().resize(DF->getContents().size() + 2, 0);
}
void MCWinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
MCDataFragment *DF = getOrCreateDataFragment();
- const MCSymbolRefExpr *SRE = MCSymbolRefExpr::Create(Symbol, getContext());
- MCFixup Fixup = MCFixup::Create(DF->getContents().size(), SRE, FK_SecRel_4);
+ const MCSymbolRefExpr *SRE = MCSymbolRefExpr::create(Symbol, getContext());
+ MCFixup Fixup = MCFixup::create(DF->getContents().size(), SRE, FK_SecRel_4);
DF->getFixups().push_back(Fixup);
DF->getContents().resize(DF->getContents().size() + 4, 0);
}
-void MCWinCOFFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
- llvm_unreachable("not supported");
-}
-
void MCWinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
assert((!Symbol->isInSection() ||
"Got non-COFF section in the COFF backend!");
const Triple &T = getContext().getObjectFileInfo()->getTargetTriple();
- if (T.isKnownWindowsMSVCEnvironment())
+ if (T.isKnownWindowsMSVCEnvironment()) {
if (ByteAlignment > 32)
report_fatal_error("alignment is limited to 32-bytes");
- // Round size up to alignment so that we will honor the alignment request.
- // TODO: We don't need to do this if we are targeting the bfd linker once we
- // add support for adding -aligncomm into the .drectve section.
- Size = std::max(Size, static_cast<uint64_t>(ByteAlignment));
+ // Round size up to alignment so that we will honor the alignment request.
+ Size = std::max(Size, static_cast<uint64_t>(ByteAlignment));
+ }
AssignSection(Symbol, nullptr);
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
- SD.setExternal(true);
- SD.setCommon(Size, ByteAlignment);
+ getAssembler().registerSymbol(*Symbol);
+ Symbol->setExternal(true);
+ Symbol->setCommon(Size, ByteAlignment);
if (!T.isKnownWindowsMSVCEnvironment() && ByteAlignment > 1) {
SmallString<128> Directive;
unsigned ByteAlignment) {
assert(!Symbol->isInSection() && "Symbol must not already have a section!");
- const MCSection *Section = getContext().getObjectFileInfo()->getBSSSection();
- MCSectionData &SectionData = getAssembler().getOrCreateSectionData(*Section);
- if (SectionData.getAlignment() < ByteAlignment)
- SectionData.setAlignment(ByteAlignment);
+ MCSection *Section = getContext().getObjectFileInfo()->getBSSSection();
+ getAssembler().registerSection(*Section);
+ if (Section->getAlignment() < ByteAlignment)
+ Section->setAlignment(ByteAlignment);
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
- SD.setExternal(false);
+ getAssembler().registerSymbol(*Symbol);
+ Symbol->setExternal(false);
AssignSection(Symbol, Section);
if (ByteAlignment != 1)
- new MCAlignFragment(ByteAlignment, /*_Value=*/0, /*_ValueSize=*/0,
- ByteAlignment, &SectionData);
+ new MCAlignFragment(ByteAlignment, /*Value=*/0, /*ValueSize=*/0,
+ ByteAlignment, Section);
- MCFillFragment *Fragment =
- new MCFillFragment(/*_Value=*/0, /*_ValueSize=*/0, Size, &SectionData);
- SD.setFragment(Fragment);
+ MCFillFragment *Fragment = new MCFillFragment(
+ /*Value=*/0, /*ValueSize=*/0, Size, Section);
+ Symbol->setFragment(Fragment);
}
-void MCWinCOFFStreamer::EmitZerofill(const MCSection *Section,
- MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment) {
+void MCWinCOFFStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {
llvm_unreachable("not implemented");
}
-void MCWinCOFFStreamer::EmitTBSSSymbol(const MCSection *Section,
- MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment) {
+void MCWinCOFFStreamer::EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {
llvm_unreachable("not implemented");
}
LLVM_ATTRIBUTE_NORETURN
void MCWinCOFFStreamer::FatalError(const Twine &Msg) const {
- getContext().FatalError(SMLoc(), Msg);
-}
+ getContext().reportFatalError(SMLoc(), Msg);
}
+} // namespace llvm
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