#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionCOFF.h"
// MCStreamer interface
- virtual void InitSections();
- virtual void InitToTextSection();
+ virtual void InitSections(bool Force);
virtual void EmitLabel(MCSymbol *Symbol);
virtual void EmitDebugLabel(MCSymbol *Symbol);
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
virtual void EmitThumbFunc(MCSymbol *Func);
- virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
+ virtual bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
virtual void BeginCOFFSymbolDef(MCSymbol const *Symbol);
virtual void EmitCOFFSymbolStorageClass(int StorageClass);
virtual void EmitCOFFSymbolType(int Type);
virtual void EndCOFFSymbolDef();
+ virtual void EmitCOFFSectionIndex(MCSymbol const *Symbol);
virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment);
virtual void EmitFileDirective(StringRef Filename);
+ virtual void EmitIdent(StringRef IdentString);
virtual void EmitWin64EHHandlerData();
virtual void FinishImpl();
- static bool classof(const MCStreamer *S) {
- return S->getKind() == SK_WinCOFFStreamer;
- }
-
private:
virtual void EmitInstToData(const MCInst &Inst) {
MCDataFragment *DF = getOrCreateDataFragment();
}
DF->getContents().append(Code.begin(), Code.end());
}
-
- void SetSection(StringRef Section,
- unsigned Characteristics,
- SectionKind Kind) {
- SwitchSection(getContext().getCOFFSection(Section, Characteristics, Kind));
- }
-
- void SetSectionText() {
- SetSection(".text",
- COFF::IMAGE_SCN_CNT_CODE
- | COFF::IMAGE_SCN_MEM_EXECUTE
- | COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getText());
- EmitCodeAlignment(4, 0);
- }
-
- void SetSectionData() {
- SetSection(".data",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA
- | COFF::IMAGE_SCN_MEM_READ
- | COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
- EmitCodeAlignment(4, 0);
- }
-
- void SetSectionBSS() {
- SetSection(".bss",
- COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA
- | COFF::IMAGE_SCN_MEM_READ
- | COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getBSS());
- EmitCodeAlignment(4, 0);
- }
};
} // end anonymous namespace.
WinCOFFStreamer::WinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
MCCodeEmitter &CE, raw_ostream &OS)
- : MCObjectStreamer(SK_WinCOFFStreamer, Context, MAB, OS, &CE),
- CurSymbol(NULL) {}
+ : MCObjectStreamer(Context, 0, MAB, OS, &CE), CurSymbol(NULL) {}
void WinCOFFStreamer::AddCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment, bool External) {
assert(!Symbol->isInSection() && "Symbol must not already have a section!");
- std::string SectionName(".bss$linkonce");
- SectionName.append(Symbol->getName().begin(), Symbol->getName().end());
-
- MCSymbolData &SymbolData = getAssembler().getOrCreateSymbolData(*Symbol);
-
- unsigned Characteristics =
- COFF::IMAGE_SCN_LNK_COMDAT |
- COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE;
-
- int Selection = COFF::IMAGE_COMDAT_SELECT_LARGEST;
-
- const MCSection *Section = MCStreamer::getContext().getCOFFSection(
- SectionName, Characteristics, Selection, SectionKind::getBSS());
-
+ const MCSection *Section = getContext().getObjectFileInfo()->getBSSSection();
MCSectionData &SectionData = getAssembler().getOrCreateSectionData(*Section);
-
if (SectionData.getAlignment() < ByteAlignment)
SectionData.setAlignment(ByteAlignment);
+ MCSymbolData &SymbolData = getAssembler().getOrCreateSymbolData(*Symbol);
SymbolData.setExternal(External);
- Symbol->setSection(*Section);
+ AssignSection(Symbol, Section);
if (ByteAlignment != 1)
new MCAlignFragment(ByteAlignment, 0, 0, ByteAlignment, &SectionData);
// MCStreamer interface
-void WinCOFFStreamer::InitToTextSection() {
- SetSectionText();
-}
+void WinCOFFStreamer::InitSections(bool Force) {
+ // 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.
+ SwitchSection(getContext().getObjectFileInfo()->getTextSection());
+ EmitCodeAlignment(4, 0);
+
+ SwitchSection(getContext().getObjectFileInfo()->getDataSection());
+ EmitCodeAlignment(4, 0);
+
+ SwitchSection(getContext().getObjectFileInfo()->getBSSSection());
+ EmitCodeAlignment(4, 0);
-void WinCOFFStreamer::InitSections() {
- SetSectionText();
- SetSectionData();
- SetSectionBSS();
- SetSectionText();
+ SwitchSection(getContext().getObjectFileInfo()->getTextSection());
}
void WinCOFFStreamer::EmitLabel(MCSymbol *Symbol) {
llvm_unreachable("not implemented");
}
-void WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
+bool WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
assert(Symbol && "Symbol must be non-null!");
assert((Symbol->isInSection()
? Symbol->getSection().getVariant() == MCSection::SV_COFF
- : true) && "Got non COFF section in the COFF backend!");
+ : true) && "Got non-COFF section in the COFF backend!");
switch (Attribute) {
case MCSA_WeakReference:
case MCSA_Weak: {
break;
default:
- llvm_unreachable("unsupported attribute");
+ return false;
}
+
+ return true;
}
void WinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
void WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
assert((Symbol->isInSection()
? Symbol->getSection().getVariant() == MCSection::SV_COFF
- : true) && "Got non COFF section in the COFF backend!");
+ : true) && "Got non-COFF section in the COFF backend!");
assert(CurSymbol == NULL && "EndCOFFSymbolDef must be called between calls "
"to BeginCOFFSymbolDef!");
CurSymbol = Symbol;
CurSymbol = NULL;
}
-void WinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol)
-{
+void WinCOFFStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
MCDataFragment *DF = getOrCreateDataFragment();
+ DF->getFixups().push_back(MCFixup::Create(
+ DF->getContents().size(), MCSymbolRefExpr::Create(Symbol, getContext()),
+ FK_SecRel_2));
+ DF->getContents().resize(DF->getContents().size() + 4, 0);
+}
- DF->getFixups().push_back(
- MCFixup::Create(DF->getContents().size(),
- MCSymbolRefExpr::Create (Symbol, getContext ()),
- FK_SecRel_4));
+void WinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
+ MCDataFragment *DF = getOrCreateDataFragment();
+ DF->getFixups().push_back(MCFixup::Create(
+ DF->getContents().size(), MCSymbolRefExpr::Create(Symbol, getContext()),
+ FK_SecRel_4));
DF->getContents().resize(DF->getContents().size() + 4, 0);
}
unsigned ByteAlignment) {
assert((Symbol->isInSection()
? Symbol->getSection().getVariant() == MCSection::SV_COFF
- : true) && "Got non COFF section in the COFF backend!");
+ : true) && "Got non-COFF section in the COFF backend!");
AddCommonSymbol(Symbol, Size, ByteAlignment, true);
}
unsigned ByteAlignment) {
assert((Symbol->isInSection()
? Symbol->getSection().getVariant() == MCSection::SV_COFF
- : true) && "Got non COFF section in the COFF backend!");
+ : true) && "Got non-COFF section in the COFF backend!");
AddCommonSymbol(Symbol, Size, ByteAlignment, false);
}
// info will be a much large effort.
}
+// TODO: Implement this if you want to emit .comment section in COFF obj files.
+void WinCOFFStreamer::EmitIdent(StringRef IdentString) {
+ llvm_unreachable("unsupported directive");
+}
+
void WinCOFFStreamer::EmitWin64EHHandlerData() {
MCStreamer::EmitWin64EHHandlerData();
}
void WinCOFFStreamer::FinishImpl() {
+ EmitFrames(NULL, true);
EmitW64Tables();
MCObjectStreamer::FinishImpl();
}
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