//===----------------------------------------------------------------------===//
//
// Data structures for DWARF info entries.
-//
+//
//===----------------------------------------------------------------------===//
#include "DIE.h"
-#include "DwarfPrinter.h"
+#include "DwarfDebug.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/MD5.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
/// Emit - Print the abbreviation using the specified asm printer.
///
-void DIEAbbrev::Emit(const AsmPrinter *Asm) const {
+void DIEAbbrev::Emit(AsmPrinter *AP) const {
// Emit its Dwarf tag type.
- Asm->EmitULEB128Bytes(Tag);
- Asm->EOL(dwarf::TagString(Tag));
+ AP->EmitULEB128(Tag, dwarf::TagString(Tag));
// Emit whether it has children DIEs.
- Asm->EmitULEB128Bytes(ChildrenFlag);
- Asm->EOL(dwarf::ChildrenString(ChildrenFlag));
+ AP->EmitULEB128(ChildrenFlag, dwarf::ChildrenString(ChildrenFlag));
// For each attribute description.
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
const DIEAbbrevData &AttrData = Data[i];
// Emit attribute type.
- Asm->EmitULEB128Bytes(AttrData.getAttribute());
- Asm->EOL(dwarf::AttributeString(AttrData.getAttribute()));
+ AP->EmitULEB128(AttrData.getAttribute(),
+ dwarf::AttributeString(AttrData.getAttribute()));
// Emit form type.
- Asm->EmitULEB128Bytes(AttrData.getForm());
- Asm->EOL(dwarf::FormEncodingString(AttrData.getForm()));
+ AP->EmitULEB128(AttrData.getForm(),
+ dwarf::FormEncodingString(AttrData.getForm()));
}
// Mark end of abbreviation.
- Asm->EmitULEB128Bytes(0); Asm->EOL("EOM(1)");
- Asm->EmitULEB128Bytes(0); Asm->EOL("EOM(2)");
+ AP->EmitULEB128(0, "EOM(1)");
+ AP->EmitULEB128(0, "EOM(2)");
}
#ifndef NDEBUG
<< '\n';
}
}
-void DIEAbbrev::dump() { print(errs()); }
+void DIEAbbrev::dump() { print(dbgs()); }
#endif
//===----------------------------------------------------------------------===//
delete Children[i];
}
-/// addSiblingOffset - Add a sibling offset field to the front of the DIE.
-///
-void DIE::addSiblingOffset() {
- DIEInteger *DI = new DIEInteger(0);
- Values.insert(Values.begin(), DI);
- Abbrev.AddFirstAttribute(dwarf::DW_AT_sibling, dwarf::DW_FORM_ref4);
+DIEValue *DIE::findAttribute(uint16_t Attribute) {
+ const SmallVectorImpl<DIEValue *> &Values = getValues();
+ const DIEAbbrev &Abbrevs = getAbbrev();
+
+ // Iterate through all the attributes until we find the one we're
+ // looking for, if we can't find it return NULL.
+ for (size_t i = 0; i < Values.size(); ++i)
+ if (Abbrevs.getData()[i].getAttribute() == Attribute)
+ return Values[i];
+ return NULL;
}
#ifndef NDEBUG
-void DIE::print(raw_ostream &O, unsigned IncIndent) {
- IndentCount += IncIndent;
+void DIE::print(raw_ostream &O, unsigned IndentCount) const {
const std::string Indent(IndentCount, ' ');
bool isBlock = Abbrev.getTag() == 0;
<< "Die: "
<< format("0x%lx", (long)(intptr_t)this)
<< ", Offset: " << Offset
- << ", Size: " << Size
- << "\n";
+ << ", Size: " << Size << "\n";
O << Indent
<< dwarf::TagString(Abbrev.getTag())
<< " "
- << dwarf::ChildrenString(Abbrev.getChildrenFlag());
+ << dwarf::ChildrenString(Abbrev.getChildrenFlag()) << "\n";
} else {
- O << "Size: " << Size;
+ O << "Size: " << Size << "\n";
}
- O << "\n";
- const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData();
+ const SmallVectorImpl<DIEAbbrevData> &Data = Abbrev.getData();
IndentCount += 2;
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
IndentCount -= 2;
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
- Children[j]->print(O, 4);
+ Children[j]->print(O, IndentCount+4);
}
if (!isBlock) O << "\n";
- IndentCount -= IncIndent;
}
void DIE::dump() {
- print(errs());
+ print(dbgs());
}
#endif
+void DIEValue::anchor() { }
#ifndef NDEBUG
-void DIEValue::dump() {
- print(errs());
+void DIEValue::dump() const {
+ print(dbgs());
}
#endif
/// EmitValue - Emit integer of appropriate size.
///
-void DIEInteger::EmitValue(Dwarf *D, unsigned Form) const {
- const AsmPrinter *Asm = D->getAsm();
+void DIEInteger::EmitValue(AsmPrinter *Asm, uint16_t Form) const {
+ unsigned Size = ~0U;
switch (Form) {
+ case dwarf::DW_FORM_flag_present:
+ // Emit something to keep the lines and comments in sync.
+ // FIXME: Is there a better way to do this?
+ if (Asm->OutStreamer.hasRawTextSupport())
+ Asm->OutStreamer.EmitRawText(StringRef(""));
+ return;
case dwarf::DW_FORM_flag: // Fall thru
case dwarf::DW_FORM_ref1: // Fall thru
- case dwarf::DW_FORM_data1: Asm->EmitInt8(Integer); break;
+ case dwarf::DW_FORM_data1: Size = 1; break;
case dwarf::DW_FORM_ref2: // Fall thru
- case dwarf::DW_FORM_data2: Asm->EmitInt16(Integer); break;
+ case dwarf::DW_FORM_data2: Size = 2; break;
+ case dwarf::DW_FORM_sec_offset: // Fall thru
case dwarf::DW_FORM_ref4: // Fall thru
- case dwarf::DW_FORM_data4: Asm->EmitInt32(Integer); break;
+ case dwarf::DW_FORM_data4: Size = 4; break;
case dwarf::DW_FORM_ref8: // Fall thru
- case dwarf::DW_FORM_data8: Asm->EmitInt64(Integer); break;
- case dwarf::DW_FORM_udata: Asm->EmitULEB128Bytes(Integer); break;
- case dwarf::DW_FORM_sdata: Asm->EmitSLEB128Bytes(Integer); break;
+ case dwarf::DW_FORM_data8: Size = 8; break;
+ case dwarf::DW_FORM_GNU_str_index: Asm->EmitULEB128(Integer); return;
+ case dwarf::DW_FORM_GNU_addr_index: Asm->EmitULEB128(Integer); return;
+ case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return;
+ case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return;
+ case dwarf::DW_FORM_addr:
+ Size = Asm->getDataLayout().getPointerSize(); break;
default: llvm_unreachable("DIE Value form not supported yet");
}
+ Asm->OutStreamer.EmitIntValue(Integer, Size);
}
/// SizeOf - Determine size of integer value in bytes.
///
-unsigned DIEInteger::SizeOf(const TargetData *TD, unsigned Form) const {
+unsigned DIEInteger::SizeOf(AsmPrinter *AP, uint16_t Form) const {
switch (Form) {
+ case dwarf::DW_FORM_flag_present: return 0;
case dwarf::DW_FORM_flag: // Fall thru
case dwarf::DW_FORM_ref1: // Fall thru
case dwarf::DW_FORM_data1: return sizeof(int8_t);
case dwarf::DW_FORM_ref2: // Fall thru
case dwarf::DW_FORM_data2: return sizeof(int16_t);
+ case dwarf::DW_FORM_sec_offset: // Fall thru
case dwarf::DW_FORM_ref4: // Fall thru
case dwarf::DW_FORM_data4: return sizeof(int32_t);
case dwarf::DW_FORM_ref8: // Fall thru
case dwarf::DW_FORM_data8: return sizeof(int64_t);
+ case dwarf::DW_FORM_GNU_str_index: return MCAsmInfo::getULEB128Size(Integer);
+ case dwarf::DW_FORM_GNU_addr_index: return MCAsmInfo::getULEB128Size(Integer);
case dwarf::DW_FORM_udata: return MCAsmInfo::getULEB128Size(Integer);
case dwarf::DW_FORM_sdata: return MCAsmInfo::getSLEB128Size(Integer);
- default: llvm_unreachable("DIE Value form not supported yet"); break;
+ case dwarf::DW_FORM_addr: return AP->getDataLayout().getPointerSize();
+ default: llvm_unreachable("DIE Value form not supported yet");
}
- return 0;
}
#ifndef NDEBUG
-void DIEInteger::print(raw_ostream &O) {
- O << "Int: " << (int64_t)Integer
- << format(" 0x%llx", (unsigned long long)Integer);
+void DIEInteger::print(raw_ostream &O) const {
+ O << "Int: " << (int64_t)Integer << " 0x";
+ O.write_hex(Integer);
}
#endif
//===----------------------------------------------------------------------===//
-// DIEString Implementation
+// DIEExpr Implementation
//===----------------------------------------------------------------------===//
-/// EmitValue - Emit string value.
+/// EmitValue - Emit expression value.
///
-void DIEString::EmitValue(Dwarf *D, unsigned Form) const {
- D->getAsm()->EmitString(Str);
-}
-
-#ifndef NDEBUG
-void DIEString::print(raw_ostream &O) {
- O << "Str: \"" << Str << "\"";
+void DIEExpr::EmitValue(AsmPrinter *AP, uint16_t Form) const {
+ AP->OutStreamer.EmitValue(Expr, SizeOf(AP, Form));
}
-#endif
-//===----------------------------------------------------------------------===//
-// DIEDwarfLabel Implementation
-//===----------------------------------------------------------------------===//
-
-/// EmitValue - Emit label value.
+/// SizeOf - Determine size of expression value in bytes.
///
-void DIEDwarfLabel::EmitValue(Dwarf *D, unsigned Form) const {
- bool IsSmall = Form == dwarf::DW_FORM_data4;
- D->EmitReference(Label, false, IsSmall);
-}
-
-/// SizeOf - Determine size of label value in bytes.
-///
-unsigned DIEDwarfLabel::SizeOf(const TargetData *TD, unsigned Form) const {
+unsigned DIEExpr::SizeOf(AsmPrinter *AP, uint16_t Form) const {
if (Form == dwarf::DW_FORM_data4) return 4;
- return TD->getPointerSize();
+ if (Form == dwarf::DW_FORM_sec_offset) return 4;
+ if (Form == dwarf::DW_FORM_strp) return 4;
+ return AP->getDataLayout().getPointerSize();
}
#ifndef NDEBUG
-void DIEDwarfLabel::print(raw_ostream &O) {
- O << "Lbl: ";
- Label.print(O);
+void DIEExpr::print(raw_ostream &O) const {
+ O << "Expr: ";
+ Expr->print(O);
}
#endif
//===----------------------------------------------------------------------===//
-// DIEObjectLabel Implementation
+// DIELabel Implementation
//===----------------------------------------------------------------------===//
/// EmitValue - Emit label value.
///
-void DIEObjectLabel::EmitValue(Dwarf *D, unsigned Form) const {
- bool IsSmall = Form == dwarf::DW_FORM_data4;
- D->EmitReference(Label, false, IsSmall);
+void DIELabel::EmitValue(AsmPrinter *AP, uint16_t Form) const {
+ AP->EmitLabelReference(Label, SizeOf(AP, Form), Form == dwarf::DW_FORM_strp
+ || Form == dwarf::DW_FORM_sec_offset || Form == dwarf::DW_OP_call_ref
+ || Form == dwarf::DW_FORM_ref_addr);
}
/// SizeOf - Determine size of label value in bytes.
///
-unsigned DIEObjectLabel::SizeOf(const TargetData *TD, unsigned Form) const {
+unsigned DIELabel::SizeOf(AsmPrinter *AP, uint16_t Form) const {
if (Form == dwarf::DW_FORM_data4) return 4;
- return TD->getPointerSize();
+ if (Form == dwarf::DW_FORM_sec_offset) return 4;
+ if (Form == dwarf::DW_FORM_strp) return 4;
+ return AP->getDataLayout().getPointerSize();
}
#ifndef NDEBUG
-void DIEObjectLabel::print(raw_ostream &O) {
- O << "Obj: " << Label;
+void DIELabel::print(raw_ostream &O) const {
+ O << "Lbl: " << Label->getName();
}
#endif
//===----------------------------------------------------------------------===//
-// DIESectionOffset Implementation
+// DIEDelta Implementation
//===----------------------------------------------------------------------===//
/// EmitValue - Emit delta value.
///
-void DIESectionOffset::EmitValue(Dwarf *D, unsigned Form) const {
- bool IsSmall = Form == dwarf::DW_FORM_data4;
- D->EmitSectionOffset(Label.getTag(), Section.getTag(),
- Label.getNumber(), Section.getNumber(),
- IsSmall, IsEH, UseSet);
+void DIEDelta::EmitValue(AsmPrinter *AP, uint16_t Form) const {
+ AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
}
/// SizeOf - Determine size of delta value in bytes.
///
-unsigned DIESectionOffset::SizeOf(const TargetData *TD, unsigned Form) const {
+unsigned DIEDelta::SizeOf(AsmPrinter *AP, uint16_t Form) const {
if (Form == dwarf::DW_FORM_data4) return 4;
- return TD->getPointerSize();
+ if (Form == dwarf::DW_FORM_strp) return 4;
+ return AP->getDataLayout().getPointerSize();
}
#ifndef NDEBUG
-void DIESectionOffset::print(raw_ostream &O) {
- O << "Off: ";
- Label.print(O);
- O << "-";
- Section.print(O);
- O << "-" << IsEH << "-" << UseSet;
+void DIEDelta::print(raw_ostream &O) const {
+ O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
}
#endif
//===----------------------------------------------------------------------===//
-// DIEDelta Implementation
+// DIEString Implementation
//===----------------------------------------------------------------------===//
-/// EmitValue - Emit delta value.
+/// EmitValue - Emit string value.
///
-void DIEDelta::EmitValue(Dwarf *D, unsigned Form) const {
- bool IsSmall = Form == dwarf::DW_FORM_data4;
- D->EmitDifference(LabelHi, LabelLo, IsSmall);
+void DIEString::EmitValue(AsmPrinter *AP, uint16_t Form) const {
+ Access->EmitValue(AP, Form);
}
/// SizeOf - Determine size of delta value in bytes.
///
-unsigned DIEDelta::SizeOf(const TargetData *TD, unsigned Form) const {
- if (Form == dwarf::DW_FORM_data4) return 4;
- return TD->getPointerSize();
+unsigned DIEString::SizeOf(AsmPrinter *AP, uint16_t Form) const {
+ return Access->SizeOf(AP, Form);
}
#ifndef NDEBUG
-void DIEDelta::print(raw_ostream &O) {
- O << "Del: ";
- LabelHi.print(O);
- O << "-";
- LabelLo.print(O);
+void DIEString::print(raw_ostream &O) const {
+ O << "String: " << Str << "\tSymbol: ";
+ Access->print(O);
}
#endif
/// EmitValue - Emit debug information entry offset.
///
-void DIEEntry::EmitValue(Dwarf *D, unsigned Form) const {
- D->getAsm()->EmitInt32(Entry->getOffset());
+void DIEEntry::EmitValue(AsmPrinter *AP, uint16_t Form) const {
+ AP->EmitInt32(Entry->getOffset());
+}
+
+unsigned DIEEntry::getRefAddrSize(AsmPrinter *AP) {
+ // DWARF4: References that use the attribute form DW_FORM_ref_addr are
+ // specified to be four bytes in the DWARF 32-bit format and eight bytes
+ // in the DWARF 64-bit format, while DWARF Version 2 specifies that such
+ // references have the same size as an address on the target system.
+ if (AP->getDwarfDebug()->getDwarfVersion() == 2)
+ return AP->getDataLayout().getPointerSize();
+ return sizeof(int32_t);
}
#ifndef NDEBUG
-void DIEEntry::print(raw_ostream &O) {
+void DIEEntry::print(raw_ostream &O) const {
O << format("Die: 0x%lx", (long)(intptr_t)Entry);
}
#endif
/// ComputeSize - calculate the size of the block.
///
-unsigned DIEBlock::ComputeSize(const TargetData *TD) {
+unsigned DIEBlock::ComputeSize(AsmPrinter *AP) {
if (!Size) {
- const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
for (unsigned i = 0, N = Values.size(); i < N; ++i)
- Size += Values[i]->SizeOf(TD, AbbrevData[i].getForm());
+ Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
}
return Size;
/// EmitValue - Emit block data.
///
-void DIEBlock::EmitValue(Dwarf *D, unsigned Form) const {
- const AsmPrinter *Asm = D->getAsm();
+void DIEBlock::EmitValue(AsmPrinter *Asm, uint16_t Form) const {
switch (Form) {
- case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break;
- case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break;
- case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break;
- case dwarf::DW_FORM_block: Asm->EmitULEB128Bytes(Size); break;
- default: llvm_unreachable("Improper form for block"); break;
+ default: llvm_unreachable("Improper form for block");
+ case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break;
+ case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break;
+ case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break;
+ case dwarf::DW_FORM_block: Asm->EmitULEB128(Size); break;
}
- const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
- for (unsigned i = 0, N = Values.size(); i < N; ++i) {
- Asm->EOL();
- Values[i]->EmitValue(D, AbbrevData[i].getForm());
- }
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+ for (unsigned i = 0, N = Values.size(); i < N; ++i)
+ Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
}
/// SizeOf - Determine size of block data in bytes.
///
-unsigned DIEBlock::SizeOf(const TargetData *TD, unsigned Form) const {
+unsigned DIEBlock::SizeOf(AsmPrinter *AP, uint16_t Form) const {
switch (Form) {
case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
- case dwarf::DW_FORM_block: return Size + MCAsmInfo::getULEB128Size(Size);
- default: llvm_unreachable("Improper form for block"); break;
+ case dwarf::DW_FORM_block: return Size + MCAsmInfo::getULEB128Size(Size);
+ default: llvm_unreachable("Improper form for block");
}
- return 0;
}
#ifndef NDEBUG
-void DIEBlock::print(raw_ostream &O) {
+void DIEBlock::print(raw_ostream &O) const {
O << "Blk: ";
DIE::print(O, 5);
}