//
//===----------------------------------------------------------------------===//
-#include "llvm/MC/MCStreamer.h"
+#include "llvm/ADT/StringExtras.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/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
-#include "llvm/MC/MCWin64EH.h"
#include "llvm/MC/MCWinCOFFStreamer.h"
#include "llvm/Support/COFF.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MathExtras.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.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.
MCObjectStreamer::EmitLabel(Symbol);
}
-void MCWinCOFFStreamer::EmitDebugLabel(MCSymbol *Symbol) {
- EmitLabel(Symbol);
-}
-
void MCWinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
llvm_unreachable("not implemented");
}
assert((!Symbol->isInSection() ||
Symbol->getSection().getVariant() == MCSection::SV_COFF) &&
"Got non-COFF section in the COFF backend!");
- assert(!CurSymbol && "starting new symbol definition in a symbol definition");
+
+ if (CurSymbol)
+ FatalError("starting a new symbol definition without completing the "
+ "previous one");
CurSymbol = Symbol;
}
void MCWinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
- assert(CurSymbol && "StorageClass specified outside of symbol definition");
- assert((StorageClass & ~0xFF) == 0 &&
- "StorageClass must only have data in the first byte!");
+ if (!CurSymbol)
+ FatalError("storage class specified outside of symbol definition");
+
+ if (StorageClass & ~COFF::SSC_Invalid)
+ FatalError(Twine("storage class value '") + itostr(StorageClass) +
+ "' out of range");
MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*CurSymbol);
SD.modifyFlags(StorageClass << COFF::SF_ClassShift, COFF::SF_ClassMask);
}
void MCWinCOFFStreamer::EmitCOFFSymbolType(int Type) {
- assert(CurSymbol && "SymbolType specified outside of a symbol definition");
- assert((Type & ~0xFFFF) == 0 &&
- "Type must only have data in the first 2 bytes");
+ if (!CurSymbol)
+ FatalError("symbol type specified outside of a symbol definition");
+
+ if (Type & ~0xffff)
+ FatalError(Twine("type value '") + itostr(Type) + "' out of range");
MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*CurSymbol);
SD.modifyFlags(Type << COFF::SF_TypeShift, COFF::SF_TypeMask);
}
void MCWinCOFFStreamer::EndCOFFSymbolDef() {
- assert(CurSymbol && "ending symbol definition without beginning one");
+ if (!CurSymbol)
+ FatalError("ending symbol definition without starting one");
CurSymbol = nullptr;
}
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);
+ 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);
+ MCFixup Fixup = MCFixup::create(DF->getContents().size(), SRE, FK_SecRel_4);
DF->getFixups().push_back(Fixup);
DF->getContents().resize(DF->getContents().size() + 4, 0);
}
Symbol->getSection().getVariant() == MCSection::SV_COFF) &&
"Got non-COFF section in the COFF backend!");
- if (ByteAlignment > 32)
- report_fatal_error("alignment is limited to 32-bytes");
+ const Triple &T = getContext().getObjectFileInfo()->getTargetTriple();
+ 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.
+ Size = std::max(Size, static_cast<uint64_t>(ByteAlignment));
+ }
AssignSection(Symbol, nullptr);
MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
SD.setExternal(true);
SD.setCommon(Size, ByteAlignment);
+
+ if (!T.isKnownWindowsMSVCEnvironment() && ByteAlignment > 1) {
+ SmallString<128> Directive;
+ raw_svector_ostream OS(Directive);
+ const MCObjectFileInfo *MFI = getContext().getObjectFileInfo();
+
+ OS << " -aligncomm:\"" << Symbol->getName() << "\","
+ << Log2_32_Ceil(ByteAlignment);
+ OS.flush();
+
+ PushSection();
+ SwitchSection(MFI->getDrectveSection());
+ EmitBytes(Directive);
+ PopSection();
+ }
}
void MCWinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
AssignSection(Symbol, Section);
if (ByteAlignment != 1)
- new MCAlignFragment(ByteAlignment, /*_Value=*/0, /*_ValueSize=*/0,
+ new MCAlignFragment(ByteAlignment, /*Value=*/0, /*ValueSize=*/0,
ByteAlignment, &SectionData);
MCFillFragment *Fragment =
- new MCFillFragment(/*_Value=*/0, /*_ValueSize=*/0, Size, &SectionData);
+ new MCFillFragment(/*Value=*/0, /*ValueSize=*/0, Size, &SectionData);
SD.setFragment(Fragment);
}
llvm_unreachable("not implemented");
}
-void MCWinCOFFStreamer::EmitWin64EHHandlerData() {
- MCStreamer::EmitWin64EHHandlerData();
-
- // We have to emit the unwind info now, because this directive
- // actually switches to the .xdata section!
- MCWin64EHUnwindEmitter::EmitUnwindInfo(*this, getCurrentW64UnwindInfo());
+void MCWinCOFFStreamer::EmitWinEHHandlerData() {
+ llvm_unreachable("not implemented");
}
void MCWinCOFFStreamer::FinishImpl() {
- EmitFrames(nullptr, true);
- EmitW64Tables();
MCObjectStreamer::FinishImpl();
}
-MCSymbolData &MCWinCOFFStreamer::getOrCreateSymbolData(const MCSymbol *Symbol) {
- return getAssembler().getOrCreateSymbolData(*Symbol);
-}
-
-MCStreamer *createWinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
- MCCodeEmitter &CE, raw_ostream &OS,
- bool RelaxAll) {
- MCWinCOFFStreamer *S = new MCWinCOFFStreamer(Context, MAB, CE, OS);
- S->getAssembler().setRelaxAll(RelaxAll);
- return S;
+LLVM_ATTRIBUTE_NORETURN
+void MCWinCOFFStreamer::FatalError(const Twine &Msg) const {
+ getContext().reportFatalError(SMLoc(), Msg);
}
}