#include "llvm/MC/MCSectionCOFF.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"
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.
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) {
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,
llvm_unreachable("not implemented");
}
-void MCWinCOFFStreamer::EmitWin64EHHandlerData() {
+void MCWinCOFFStreamer::EmitWinEHHandlerData() {
llvm_unreachable("not implemented");
}