//===----------------------------------------------------------------------===//
#include "DIE.h"
+
+#include "DwarfCompileUnit.h"
#include "DwarfDebug.h"
#include "DwarfUnit.h"
#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/Debug.h"
void DIEAbbrev::dump() { print(dbgs()); }
#endif
-//===----------------------------------------------------------------------===//
-// DIE Implementation
-//===----------------------------------------------------------------------===//
-
-DIE::~DIE() {
- for (unsigned i = 0, N = Children.size(); i < N; ++i)
- delete Children[i];
-}
-
/// Climb up the parent chain to get the unit DIE to which this DIE
/// belongs.
const DIE *DIE::getUnit() const {
return p;
p = p->getParent();
}
- return NULL;
+ return nullptr;
}
DIEValue *DIE::findAttribute(dwarf::Attribute Attribute) const {
for (size_t i = 0; i < Values.size(); ++i)
if (Abbrevs.getData()[i].getAttribute() == Attribute)
return Values[i];
- return NULL;
+ return nullptr;
}
#ifndef NDEBUG
// DIEEntry Implementation
//===----------------------------------------------------------------------===//
+/// Emit something like ".long Hi+Offset-Lo" where the size in bytes of the
+/// directive is specified by Size and Hi/Lo specify the labels.
+static void emitLabelOffsetDifference(MCStreamer &Streamer, const MCSymbol *Hi,
+ uint64_t Offset, const MCSymbol *Lo,
+ unsigned Size) {
+ MCContext &Context = Streamer.getContext();
+
+ // Emit Hi+Offset - Lo
+ // Get the Hi+Offset expression.
+ const MCExpr *Plus =
+ MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Hi, Context),
+ MCConstantExpr::Create(Offset, Context), Context);
+
+ // Get the Hi+Offset-Lo expression.
+ const MCExpr *Diff = MCBinaryExpr::CreateSub(
+ Plus, MCSymbolRefExpr::Create(Lo, Context), Context);
+
+ // Otherwise, emit with .set (aka assignment).
+ MCSymbol *SetLabel = Context.CreateTempSymbol();
+ Streamer.EmitAssignment(SetLabel, Diff);
+ Streamer.EmitSymbolValue(SetLabel, Size);
+}
+
/// EmitValue - Emit debug information entry offset.
///
void DIEEntry::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
if (Form == dwarf::DW_FORM_ref_addr) {
const DwarfDebug *DD = AP->getDwarfDebug();
- unsigned Addr = Entry->getOffset();
+ unsigned Addr = Entry.getOffset();
assert(!DD->useSplitDwarf() && "TODO: dwo files can't have relocations.");
// For DW_FORM_ref_addr, output the offset from beginning of debug info
// section. Entry->getOffset() returns the offset from start of the
// compile unit.
- DwarfCompileUnit *CU = DD->lookupUnit(Entry->getUnit());
+ DwarfCompileUnit *CU = DD->lookupUnit(Entry.getUnit());
assert(CU && "CUDie should belong to a CU.");
Addr += CU->getDebugInfoOffset();
if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
AP->EmitLabelPlusOffset(CU->getSectionSym(), Addr,
DIEEntry::getRefAddrSize(AP));
else
- AP->EmitLabelOffsetDifference(CU->getSectionSym(), Addr,
- CU->getSectionSym(),
- DIEEntry::getRefAddrSize(AP));
+ emitLabelOffsetDifference(AP->OutStreamer, CU->getSectionSym(), Addr,
+ CU->getSectionSym(),
+ DIEEntry::getRefAddrSize(AP));
} else
- AP->EmitInt32(Entry->getOffset());
+ AP->EmitInt32(Entry.getOffset());
}
unsigned DIEEntry::getRefAddrSize(AsmPrinter *AP) {
#ifndef NDEBUG
void DIEEntry::print(raw_ostream &O) const {
- O << format("Die: 0x%lx", (long)(intptr_t)Entry);
+ O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
}
#endif