Split out the Dwarf writer stuff into separate files. This is a much more
logical/sane approach to organizing all of the stuff that goes into writing out
DWARF information. Honestly? even this is too complex for what it's supposed to
be doing.
Trivia: It *looks* like there would be functionality changes, however there aren't!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71821 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DIE.cpp b/lib/CodeGen/AsmPrinter/DIE.cpp
new file mode 100644
index 0000000..dc149cf
--- /dev/null
+++ b/lib/CodeGen/AsmPrinter/DIE.cpp
@@ -0,0 +1,518 @@
+//===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Data structures for DWARF info entries.
+//
+//===----------------------------------------------------------------------===//
+
+#include "DIE.h"
+#include "DwarfPrinter.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/TargetData.h"
+#include <ostream>
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// DIEAbbrevData Implementation
+//===----------------------------------------------------------------------===//
+
+/// Profile - Used to gather unique data for the abbreviation folding set.
+///
+void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
+ ID.AddInteger(Attribute);
+ ID.AddInteger(Form);
+}
+
+//===----------------------------------------------------------------------===//
+// DIEAbbrev Implementation
+//===----------------------------------------------------------------------===//
+
+/// Profile - Used to gather unique data for the abbreviation folding set.
+///
+void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
+ ID.AddInteger(Tag);
+ ID.AddInteger(ChildrenFlag);
+
+ // For each attribute description.
+ for (unsigned i = 0, N = Data.size(); i < N; ++i)
+ Data[i].Profile(ID);
+}
+
+/// Emit - Print the abbreviation using the specified asm printer.
+///
+void DIEAbbrev::Emit(const AsmPrinter *Asm) const {
+ // Emit its Dwarf tag type.
+ Asm->EmitULEB128Bytes(Tag);
+ Asm->EOL(dwarf::TagString(Tag));
+
+ // Emit whether it has children DIEs.
+ Asm->EmitULEB128Bytes(ChildrenFlag);
+ Asm->EOL(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()));
+
+ // Emit form type.
+ Asm->EmitULEB128Bytes(AttrData.getForm());
+ Asm->EOL(dwarf::FormEncodingString(AttrData.getForm()));
+ }
+
+ // Mark end of abbreviation.
+ Asm->EmitULEB128Bytes(0); Asm->EOL("EOM(1)");
+ Asm->EmitULEB128Bytes(0); Asm->EOL("EOM(2)");
+}
+
+#ifndef NDEBUG
+void DIEAbbrev::print(std::ostream &O) {
+ O << "Abbreviation @"
+ << std::hex << (intptr_t)this << std::dec
+ << " "
+ << dwarf::TagString(Tag)
+ << " "
+ << dwarf::ChildrenString(ChildrenFlag)
+ << "\n";
+
+ for (unsigned i = 0, N = Data.size(); i < N; ++i) {
+ O << " "
+ << dwarf::AttributeString(Data[i].getAttribute())
+ << " "
+ << dwarf::FormEncodingString(Data[i].getForm())
+ << "\n";
+ }
+}
+void DIEAbbrev::dump() { print(cerr); }
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIE Implementation
+//===----------------------------------------------------------------------===//
+
+DIE::~DIE() {
+ for (unsigned i = 0, N = Children.size(); i < N; ++i)
+ 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);
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIE::Profile(FoldingSetNodeID &ID) {
+ Abbrev.Profile(ID);
+
+ for (unsigned i = 0, N = Children.size(); i < N; ++i)
+ ID.AddPointer(Children[i]);
+
+ for (unsigned j = 0, M = Values.size(); j < M; ++j)
+ ID.AddPointer(Values[j]);
+}
+
+#ifndef NDEBUG
+void DIE::print(std::ostream &O, unsigned IncIndent) {
+ static unsigned IndentCount = 0;
+ IndentCount += IncIndent;
+ const std::string Indent(IndentCount, ' ');
+ bool isBlock = Abbrev.getTag() == 0;
+
+ if (!isBlock) {
+ O << Indent
+ << "Die: "
+ << "0x" << std::hex << (intptr_t)this << std::dec
+ << ", Offset: " << Offset
+ << ", Size: " << Size
+ << "\n";
+
+ O << Indent
+ << dwarf::TagString(Abbrev.getTag())
+ << " "
+ << dwarf::ChildrenString(Abbrev.getChildrenFlag());
+ } else {
+ O << "Size: " << Size;
+ }
+ O << "\n";
+
+ const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData();
+
+ IndentCount += 2;
+ for (unsigned i = 0, N = Data.size(); i < N; ++i) {
+ O << Indent;
+
+ if (!isBlock)
+ O << dwarf::AttributeString(Data[i].getAttribute());
+ else
+ O << "Blk[" << i << "]";
+
+ O << " "
+ << dwarf::FormEncodingString(Data[i].getForm())
+ << " ";
+ Values[i]->print(O);
+ O << "\n";
+ }
+ IndentCount -= 2;
+
+ for (unsigned j = 0, M = Children.size(); j < M; ++j) {
+ Children[j]->print(O, 4);
+ }
+
+ if (!isBlock) O << "\n";
+ IndentCount -= IncIndent;
+}
+
+void DIE::dump() {
+ print(cerr);
+}
+#endif
+
+
+#ifndef NDEBUG
+void DIEValue::dump() {
+ print(cerr);
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEInteger Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit integer of appropriate size.
+///
+void DIEInteger::EmitValue(Dwarf *D, unsigned Form) const {
+ const AsmPrinter *Asm = D->getAsm();
+ switch (Form) {
+ 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_ref2: // Fall thru
+ case dwarf::DW_FORM_data2: Asm->EmitInt16(Integer); break;
+ case dwarf::DW_FORM_ref4: // Fall thru
+ case dwarf::DW_FORM_data4: Asm->EmitInt32(Integer); 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;
+ default: assert(0 && "DIE Value form not supported yet"); break;
+ }
+}
+
+/// SizeOf - Determine size of integer value in bytes.
+///
+unsigned DIEInteger::SizeOf(const TargetData *TD, unsigned Form) const {
+ switch (Form) {
+ 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_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_udata: return TargetAsmInfo::getULEB128Size(Integer);
+ case dwarf::DW_FORM_sdata: return TargetAsmInfo::getSLEB128Size(Integer);
+ default: assert(0 && "DIE Value form not supported yet"); break;
+ }
+ return 0;
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIEInteger::Profile(FoldingSetNodeID &ID, unsigned Int) {
+ ID.AddInteger(isInteger);
+ ID.AddInteger(Int);
+}
+void DIEInteger::Profile(FoldingSetNodeID &ID) {
+ Profile(ID, Integer);
+}
+
+#ifndef NDEBUG
+void DIEInteger::print(std::ostream &O) {
+ O << "Int: " << (int64_t)Integer
+ << " 0x" << std::hex << Integer << std::dec;
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEString Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit string value.
+///
+void DIEString::EmitValue(Dwarf *D, unsigned Form) const {
+ D->getAsm()->EmitString(Str);
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIEString::Profile(FoldingSetNodeID &ID, const std::string &Str) {
+ ID.AddInteger(isString);
+ ID.AddString(Str);
+}
+void DIEString::Profile(FoldingSetNodeID &ID) {
+ Profile(ID, Str);
+}
+
+#ifndef NDEBUG
+void DIEString::print(std::ostream &O) {
+ O << "Str: \"" << Str << "\"";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEDwarfLabel Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit label value.
+///
+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 {
+ if (Form == dwarf::DW_FORM_data4) return 4;
+ return TD->getPointerSize();
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIEDwarfLabel::Profile(FoldingSetNodeID &ID, const DWLabel &Label) {
+ ID.AddInteger(isLabel);
+ Label.Profile(ID);
+}
+void DIEDwarfLabel::Profile(FoldingSetNodeID &ID) {
+ Profile(ID, Label);
+}
+
+#ifndef NDEBUG
+void DIEDwarfLabel::print(std::ostream &O) {
+ O << "Lbl: ";
+ Label.print(O);
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEObjectLabel 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);
+}
+
+/// SizeOf - Determine size of label value in bytes.
+///
+unsigned DIEObjectLabel::SizeOf(const TargetData *TD, unsigned Form) const {
+ if (Form == dwarf::DW_FORM_data4) return 4;
+ return TD->getPointerSize();
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIEObjectLabel::Profile(FoldingSetNodeID &ID, const std::string &Label) {
+ ID.AddInteger(isAsIsLabel);
+ ID.AddString(Label);
+}
+void DIEObjectLabel::Profile(FoldingSetNodeID &ID) {
+ Profile(ID, Label.c_str());
+}
+
+#ifndef NDEBUG
+void DIEObjectLabel::print(std::ostream &O) {
+ O << "Obj: " << Label;
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIESectionOffset 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);
+}
+
+/// SizeOf - Determine size of delta value in bytes.
+///
+unsigned DIESectionOffset::SizeOf(const TargetData *TD, unsigned Form) const {
+ if (Form == dwarf::DW_FORM_data4) return 4;
+ return TD->getPointerSize();
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIESectionOffset::Profile(FoldingSetNodeID &ID, const DWLabel &Label,
+ const DWLabel &Section) {
+ ID.AddInteger(isSectionOffset);
+ Label.Profile(ID);
+ Section.Profile(ID);
+ // IsEH and UseSet are specific to the Label/Section that we will emit the
+ // offset for; so Label/Section are enough for uniqueness.
+}
+void DIESectionOffset::Profile(FoldingSetNodeID &ID) {
+ Profile(ID, Label, Section);
+}
+
+#ifndef NDEBUG
+void DIESectionOffset::print(std::ostream &O) {
+ O << "Off: ";
+ Label.print(O);
+ O << "-";
+ Section.print(O);
+ O << "-" << IsEH << "-" << UseSet;
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEDelta Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit delta value.
+///
+void DIEDelta::EmitValue(Dwarf *D, unsigned Form) const {
+ bool IsSmall = Form == dwarf::DW_FORM_data4;
+ D->EmitDifference(LabelHi, LabelLo, IsSmall);
+}
+
+/// 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();
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIEDelta::Profile(FoldingSetNodeID &ID, const DWLabel &LabelHi,
+ const DWLabel &LabelLo) {
+ ID.AddInteger(isDelta);
+ LabelHi.Profile(ID);
+ LabelLo.Profile(ID);
+}
+void DIEDelta::Profile(FoldingSetNodeID &ID) {
+ Profile(ID, LabelHi, LabelLo);
+}
+
+#ifndef NDEBUG
+void DIEDelta::print(std::ostream &O) {
+ O << "Del: ";
+ LabelHi.print(O);
+ O << "-";
+ LabelLo.print(O);
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEEntry Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit debug information entry offset.
+///
+void DIEEntry::EmitValue(Dwarf *D, unsigned Form) const {
+ D->getAsm()->EmitInt32(Entry->getOffset());
+}
+
+/// Profile - Used to gather unique data for the value folding set.
+///
+void DIEEntry::Profile(FoldingSetNodeID &ID, DIE *Entry) {
+ ID.AddInteger(isEntry);
+ ID.AddPointer(Entry);
+}
+void DIEEntry::Profile(FoldingSetNodeID &ID) {
+ ID.AddInteger(isEntry);
+
+ if (Entry)
+ ID.AddPointer(Entry);
+ else
+ ID.AddPointer(this);
+}
+
+#ifndef NDEBUG
+void DIEEntry::print(std::ostream &O) {
+ O << "Die: 0x" << std::hex << (intptr_t)Entry << std::dec;
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEBlock Implementation
+//===----------------------------------------------------------------------===//
+
+/// ComputeSize - calculate the size of the block.
+///
+unsigned DIEBlock::ComputeSize(const TargetData *TD) {
+ if (!Size) {
+ const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
+ for (unsigned i = 0, N = Values.size(); i < N; ++i)
+ Size += Values[i]->SizeOf(TD, AbbrevData[i].getForm());
+ }
+
+ return Size;
+}
+
+/// EmitValue - Emit block data.
+///
+void DIEBlock::EmitValue(Dwarf *D, unsigned Form) const {
+ const AsmPrinter *Asm = D->getAsm();
+ 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: assert(0 && "Improper form for block"); 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());
+ }
+}
+
+/// SizeOf - Determine size of block data in bytes.
+///
+unsigned DIEBlock::SizeOf(const TargetData *TD, unsigned 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 + TargetAsmInfo::getULEB128Size(Size);
+ default: assert(0 && "Improper form for block"); break;
+ }
+ return 0;
+}
+
+void DIEBlock::Profile(FoldingSetNodeID &ID) {
+ ID.AddInteger(isBlock);
+ DIE::Profile(ID);
+}
+
+#ifndef NDEBUG
+void DIEBlock::print(std::ostream &O) {
+ O << "Blk: ";
+ DIE::print(O, 5);
+}
+#endif