//===----------------------------------------------------------------------===//
#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/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.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.
if (!CurSymbol)
FatalError("storage class specified outside of symbol definition");
- if (StorageClass & ~0xff)
+ if (StorageClass & ~COFF::SSC_Invalid)
FatalError(Twine("storage class value '") + itostr(StorageClass) +
"' out of range");
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);
}
if (T.isKnownWindowsMSVCEnvironment()) {
if (ByteAlignment > 32)
report_fatal_error("alignment is limited to 32-bytes");
- } else {
- // The bfd linker from binutils only supports alignments less than 4 bytes
- // without inserting -aligncomm arguments into the .drectve section.
- // TODO: Support inserting -aligncomm into the .drectve section.
- if (ByteAlignment > 4)
- report_fatal_error("alignment is limited to 4-bytes");
+
+ // Round size up to alignment so that we will honor the alignment request.
+ Size = std::max(Size, static_cast<uint64_t>(ByteAlignment));
}
- // 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));
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_ATTRIBUTE_NORETURN
void MCWinCOFFStreamer::FatalError(const Twine &Msg) const {
- getContext().FatalError(SMLoc(), Msg);
+ getContext().reportFatalError(SMLoc(), Msg);
}
}