#include "DwarfExpression.h"
#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/DIE.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCAsmInfo.h"
///
/// SectionLabel is a temporary label emitted at the start of the section that
/// Label lives in.
-void AsmPrinter::EmitSectionOffset(const MCSymbol *Label,
- const MCSymbol *SectionLabel) const {
+void AsmPrinter::emitSectionOffset(const MCSymbol *Label) const {
// On COFF targets, we have to emit the special .secrel32 directive.
if (MAI->needsDwarfSectionOffsetDirective()) {
OutStreamer.EmitCOFFSecRel32(Label);
return;
}
- // Get the section that we're referring to, based on SectionLabel.
- const MCSection &Section = SectionLabel->getSection();
-
- // If Label has already been emitted, verify that it is in the same section as
- // section label for sanity.
- assert((!Label->isInSection() || &Label->getSection() == &Section) &&
- "Section offset using wrong section base for label");
-
- // If the section in question will end up with an address of 0 anyway, we can
- // just emit an absolute reference to save a relocation.
- if (Section.isBaseAddressKnownZero()) {
+ // If the format uses relocations with dwarf, refer to the symbol directly.
+ if (MAI->doesDwarfUseRelocationsAcrossSections()) {
OutStreamer.EmitSymbolValue(Label, 4);
return;
}
// Otherwise, emit it as a label difference from the start of the section.
- EmitLabelDifference(Label, SectionLabel, 4);
+ EmitLabelDifference(Label, Label->getSection().getBeginSymbol(), 4);
}
/// EmitDwarfRegOp - Emit dwarf register operation.
void AsmPrinter::EmitDwarfRegOp(ByteStreamer &Streamer,
const MachineLocation &MLoc) const {
- DebugLocDwarfExpression Expr(*TM.getSubtargetImpl()->getRegisterInfo(),
+ DebugLocDwarfExpression Expr(*MF->getSubtarget().getRegisterInfo(),
getDwarfDebug()->getDwarfVersion(), Streamer);
const MCRegisterInfo *MRI = MMI->getContext().getRegisterInfo();
int Reg = MRI->getDwarfRegNum(MLoc.getReg(), false);
break;
}
}
+
+void AsmPrinter::emitDwarfDIE(const DIE &Die) const {
+ // Get the abbreviation for this DIE.
+ const DIEAbbrev &Abbrev = Die.getAbbrev();
+
+ // Emit the code (index) for the abbreviation.
+ if (isVerbose())
+ OutStreamer.AddComment("Abbrev [" + Twine(Abbrev.getNumber()) +
+ "] 0x" + Twine::utohexstr(Die.getOffset()) +
+ ":0x" + Twine::utohexstr(Die.getSize()) + " " +
+ dwarf::TagString(Abbrev.getTag()));
+ EmitULEB128(Abbrev.getNumber());
+
+ const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+
+ // Emit the DIE attribute values.
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ dwarf::Attribute Attr = AbbrevData[i].getAttribute();
+ dwarf::Form Form = AbbrevData[i].getForm();
+ assert(Form && "Too many attributes for DIE (check abbreviation)");
+
+ if (isVerbose()) {
+ OutStreamer.AddComment(dwarf::AttributeString(Attr));
+ if (Attr == dwarf::DW_AT_accessibility)
+ OutStreamer.AddComment(dwarf::AccessibilityString(
+ cast<DIEInteger>(Values[i])->getValue()));
+ }
+
+ // Emit an attribute using the defined form.
+ Values[i]->EmitValue(this, Form);
+ }
+
+ // Emit the DIE children if any.
+ if (Abbrev.hasChildren()) {
+ for (auto &Child : Die.getChildren())
+ emitDwarfDIE(*Child);
+
+ OutStreamer.AddComment("End Of Children Mark");
+ EmitInt8(0);
+ }
+}
+
+void
+AsmPrinter::emitDwarfAbbrevs(const std::vector<DIEAbbrev *>& Abbrevs) const {
+ // For each abbrevation.
+ for (const DIEAbbrev *Abbrev : Abbrevs) {
+ // Emit the abbrevations code (base 1 index.)
+ EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
+
+ // Emit the abbreviations data.
+ Abbrev->Emit(this);
+ }
+
+ // Mark end of abbreviations.
+ EmitULEB128(0, "EOM(3)");
+}