X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDIE.cpp;h=cf8cbd5b7eae0e77417d7e1511e7bfe37126a252;hp=b9bb4af2b811880411e29b95bf612a002ed308da;hb=80668d18e8064560bb6c227cde4e2a01d32e683e;hpb=0d9d70f0130ca609a1f41e0d90b3952751c110ab diff --git a/lib/CodeGen/AsmPrinter/DIE.cpp b/lib/CodeGen/AsmPrinter/DIE.cpp index b9bb4af2b81..cf8cbd5b7ea 100644 --- a/lib/CodeGen/AsmPrinter/DIE.cpp +++ b/lib/CodeGen/AsmPrinter/DIE.cpp @@ -8,21 +8,24 @@ //===----------------------------------------------------------------------===// // // Data structures for DWARF info entries. -// +// //===----------------------------------------------------------------------===// #include "DIE.h" -#include "DwarfPrinter.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/MCStreamer.h" #include "llvm/MC/MCSymbol.h" -#include "llvm/Target/TargetData.h" #include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/Format.h" #include "llvm/Support/FormattedStream.h" +#include "llvm/Support/LEB128.h" +#include "llvm/Support/MD5.h" using namespace llvm; //===----------------------------------------------------------------------===// @@ -32,8 +35,10 @@ using namespace llvm; /// Profile - Used to gather unique data for the abbreviation folding set. /// void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const { - ID.AddInteger(Attribute); - ID.AddInteger(Form); + // Explicitly cast to an integer type for which FoldingSetNodeID has + // overloads. Otherwise MSVC 2010 thinks this call is ambiguous. + ID.AddInteger(unsigned(Attribute)); + ID.AddInteger(unsigned(Form)); } //===----------------------------------------------------------------------===// @@ -43,7 +48,7 @@ void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const { /// Profile - Used to gather unique data for the abbreviation folding set. /// void DIEAbbrev::Profile(FoldingSetNodeID &ID) const { - ID.AddInteger(Tag); + ID.AddInteger(unsigned(Tag)); ID.AddInteger(ChildrenFlag); // For each attribute description. @@ -53,33 +58,29 @@ void DIEAbbrev::Profile(FoldingSetNodeID &ID) const { /// Emit - Print the abbreviation using the specified asm printer. /// -void DIEAbbrev::Emit(const DwarfPrinter *DP) const { +void DIEAbbrev::Emit(AsmPrinter *AP) const { // Emit its Dwarf tag type. - // FIXME: Doing work even in non-asm-verbose runs. - DP->EmitULEB128(Tag, dwarf::TagString(Tag)); + AP->EmitULEB128(Tag, dwarf::TagString(Tag)); // Emit whether it has children DIEs. - // FIXME: Doing work even in non-asm-verbose runs. - DP->EmitULEB128(ChildrenFlag, 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. - // FIXME: Doing work even in non-asm-verbose runs. - DP->EmitULEB128(AttrData.getAttribute(), + AP->EmitULEB128(AttrData.getAttribute(), dwarf::AttributeString(AttrData.getAttribute())); // Emit form type. - // FIXME: Doing work even in non-asm-verbose runs. - DP->EmitULEB128(AttrData.getForm(), + AP->EmitULEB128(AttrData.getForm(), dwarf::FormEncodingString(AttrData.getForm())); } // Mark end of abbreviation. - DP->EmitULEB128(0, "EOM(1)"); - DP->EmitULEB128(0, "EOM(2)"); + AP->EmitULEB128(0, "EOM(1)"); + AP->EmitULEB128(0, "EOM(2)"); } #ifndef NDEBUG @@ -112,17 +113,41 @@ DIE::~DIE() { 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); +/// Climb up the parent chain to get the unit DIE to which this DIE +/// belongs. +const DIE *DIE::getUnit() const { + const DIE *Cu = getUnitOrNull(); + assert(Cu && "We should not have orphaned DIEs."); + return Cu; +} + +/// Climb up the parent chain to get the unit DIE this DIE belongs +/// to. Return NULL if DIE is not added to an owner yet. +const DIE *DIE::getUnitOrNull() const { + const DIE *p = this; + while (p) { + if (p->getTag() == dwarf::DW_TAG_compile_unit || + p->getTag() == dwarf::DW_TAG_type_unit) + return p; + p = p->getParent(); + } + return NULL; +} + +DIEValue *DIE::findAttribute(uint16_t Attribute) const { + const SmallVectorImpl &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; @@ -141,7 +166,7 @@ void DIE::print(raw_ostream &O, unsigned IncIndent) { O << "Size: " << Size << "\n"; } - const SmallVector &Data = Abbrev.getData(); + const SmallVectorImpl &Data = Abbrev.getData(); IndentCount += 2; for (unsigned i = 0, N = Data.size(); i < N; ++i) { @@ -161,11 +186,10 @@ void DIE::print(raw_ostream &O, unsigned IncIndent) { 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() { @@ -173,9 +197,10 @@ void DIE::dump() { } #endif +void DIEValue::anchor() { } #ifndef NDEBUG -void DIEValue::dump() { +void DIEValue::dump() const { print(dbgs()); } #endif @@ -186,68 +211,91 @@ void DIEValue::dump() { /// EmitValue - Emit integer of appropriate size. /// -void DIEInteger::EmitValue(DwarfPrinter *D, unsigned Form) const { - const AsmPrinter *Asm = D->getAsm(); +void DIEInteger::EmitValue(AsmPrinter *Asm, dwarf::Form 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? + Asm->OutStreamer.AddBlankLine(); + return; case dwarf::DW_FORM_flag: // Fall thru case dwarf::DW_FORM_ref1: // Fall thru case dwarf::DW_FORM_data1: Size = 1; break; case dwarf::DW_FORM_ref2: // Fall thru 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: Size = 4; break; case dwarf::DW_FORM_ref8: // Fall thru + case dwarf::DW_FORM_ref_sig8: // Fall thru case dwarf::DW_FORM_data8: Size = 8; break; - case dwarf::DW_FORM_udata: D->EmitULEB128(Integer); return; - case dwarf::DW_FORM_sdata: D->EmitSLEB128(Integer, ""); return; + 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, 0/*addrspace*/); + 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, dwarf::Form 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_ref_sig8: // Fall thru case dwarf::DW_FORM_data8: return sizeof(int64_t); - 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_GNU_str_index: return getULEB128Size(Integer); + case dwarf::DW_FORM_GNU_addr_index: return getULEB128Size(Integer); + case dwarf::DW_FORM_udata: return getULEB128Size(Integer); + case dwarf::DW_FORM_sdata: return getSLEB128Size(Integer); + 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 DIEExpr::EmitValue(AsmPrinter *AP, dwarf::Form Form) const { + AP->OutStreamer.EmitValue(Expr, SizeOf(AP, Form)); +} + +/// SizeOf - Determine size of expression value in bytes. /// -void DIEString::EmitValue(DwarfPrinter *D, unsigned Form) const { - D->getAsm()->OutStreamer.EmitBytes(Str, /*addrspace*/0); - // Emit nul terminator. - D->getAsm()->OutStreamer.EmitIntValue(0, 1, /*addrspace*/0); +unsigned DIEExpr::SizeOf(AsmPrinter *AP, dwarf::Form Form) const { + if (Form == dwarf::DW_FORM_data4) return 4; + if (Form == dwarf::DW_FORM_sec_offset) return 4; + if (Form == dwarf::DW_FORM_strp) return 4; + return AP->getDataLayout().getPointerSize(); } #ifndef NDEBUG -void DIEString::print(raw_ostream &O) { - O << "Str: \"" << Str << "\""; +void DIEExpr::print(raw_ostream &O) const { + O << "Expr: "; + Expr->print(O); } #endif @@ -257,70 +305,73 @@ void DIEString::print(raw_ostream &O) { /// EmitValue - Emit label value. /// -void DIELabel::EmitValue(DwarfPrinter *D, unsigned Form) const { - bool IsSmall = Form == dwarf::DW_FORM_data4; - D->EmitReference(Label, false, IsSmall); +void DIELabel::EmitValue(AsmPrinter *AP, dwarf::Form Form) const { + AP->EmitLabelReference(Label, SizeOf(AP, Form), + Form == dwarf::DW_FORM_strp || + Form == dwarf::DW_FORM_sec_offset || + Form == dwarf::DW_FORM_ref_addr); } /// SizeOf - Determine size of label value in bytes. /// -unsigned DIELabel::SizeOf(const TargetData *TD, unsigned Form) const { +unsigned DIELabel::SizeOf(AsmPrinter *AP, dwarf::Form 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 DIELabel::print(raw_ostream &O) { +void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); } #endif //===----------------------------------------------------------------------===// -// DIESectionOffset Implementation +// DIEDelta Implementation //===----------------------------------------------------------------------===// /// EmitValue - Emit delta value. /// -void DIESectionOffset::EmitValue(DwarfPrinter *D, unsigned Form) const { - bool IsSmall = Form == dwarf::DW_FORM_data4; - D->EmitSectionOffset(Label, Section, IsSmall, IsEH); +void DIEDelta::EmitValue(AsmPrinter *AP, dwarf::Form 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, dwarf::Form 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 DIESectionOffset::print(raw_ostream &O) { - O << "Off: " << Label->getName() << "-" << Section->getName() - << "-" << IsEH; +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(DwarfPrinter *D, unsigned Form) const { - bool IsSmall = Form == dwarf::DW_FORM_data4; - D->EmitDifference(LabelHi, LabelLo, IsSmall); +void DIEString::EmitValue(AsmPrinter *AP, dwarf::Form 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, dwarf::Form Form) const { + return Access->SizeOf(AP, Form); } #ifndef NDEBUG -void DIEDelta::print(raw_ostream &O) { - O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName(); +void DIEString::print(raw_ostream &O) const { + O << "String: " << Str << "\tSymbol: "; + Access->print(O); } #endif @@ -330,64 +381,149 @@ void DIEDelta::print(raw_ostream &O) { /// EmitValue - Emit debug information entry offset. /// -void DIEEntry::EmitValue(DwarfPrinter *D, unsigned Form) const { - D->getAsm()->EmitInt32(Entry->getOffset()); +void DIEEntry::EmitValue(AsmPrinter *AP, dwarf::Form 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. + const DwarfDebug *DD = AP->getDwarfDebug(); + assert(DD && "Expected Dwarf Debug info to be available"); + if (DD->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 +//===----------------------------------------------------------------------===// +// DIETypeSignature Implementation +//===----------------------------------------------------------------------===// +void DIETypeSignature::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const { + assert(Form == dwarf::DW_FORM_ref_sig8); + Asm->OutStreamer.EmitIntValue(Unit.getTypeSignature(), 8); +} + +#ifndef NDEBUG +void DIETypeSignature::print(raw_ostream &O) const { + O << format("Type Unit: 0x%lx", Unit.getTypeSignature()); +} + +void DIETypeSignature::dump() const { print(dbgs()); } +#endif + +//===----------------------------------------------------------------------===// +// DIELoc Implementation +//===----------------------------------------------------------------------===// + +/// ComputeSize - calculate the size of the location expression. +/// +unsigned DIELoc::ComputeSize(AsmPrinter *AP) const { + if (Size) + return Size; + + unsigned Sz = 0; + const SmallVectorImpl &AbbrevData = Abbrev.getData(); + for (unsigned i = 0, N = Values.size(); i < N; ++i) + Sz += Values[i]->SizeOf(AP, AbbrevData[i].getForm()); + + return Sz; +} + +/// EmitValue - Emit location data. +/// +void DIELoc::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const { + switch (Form) { + 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: + case dwarf::DW_FORM_exprloc: + Asm->EmitULEB128(Size); break; + } + + const SmallVectorImpl &AbbrevData = Abbrev.getData(); + for (unsigned i = 0, N = Values.size(); i < N; ++i) + Values[i]->EmitValue(Asm, AbbrevData[i].getForm()); +} + +/// SizeOf - Determine size of location data in bytes. +/// +unsigned DIELoc::SizeOf(AsmPrinter *AP, dwarf::Form 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: + case dwarf::DW_FORM_exprloc: + return Size + getULEB128Size(Size); + default: llvm_unreachable("Improper form for block"); + } +} + +#ifndef NDEBUG +void DIELoc::print(raw_ostream &O) const { + O << "ExprLoc: "; + DIE::print(O, 5); +} +#endif + //===----------------------------------------------------------------------===// // DIEBlock Implementation //===----------------------------------------------------------------------===// /// ComputeSize - calculate the size of the block. /// -unsigned DIEBlock::ComputeSize(const TargetData *TD) { - if (!Size) { - const SmallVector &AbbrevData = Abbrev.getData(); - for (unsigned i = 0, N = Values.size(); i < N; ++i) - Size += Values[i]->SizeOf(TD, AbbrevData[i].getForm()); - } +unsigned DIEBlock::ComputeSize(AsmPrinter *AP) const { + if (Size) + return Size; + + unsigned Sz = 0; + const SmallVectorImpl &AbbrevData = Abbrev.getData(); + for (unsigned i = 0, N = Values.size(); i < N; ++i) + Sz += Values[i]->SizeOf(AP, AbbrevData[i].getForm()); - return Size; + return Sz; } /// EmitValue - Emit block data. /// -void DIEBlock::EmitValue(DwarfPrinter *D, unsigned Form) const { - const AsmPrinter *Asm = D->getAsm(); +void DIEBlock::EmitValue(AsmPrinter *Asm, dwarf::Form 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: D->EmitULEB128(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 &AbbrevData = Abbrev.getData(); + const SmallVectorImpl &AbbrevData = Abbrev.getData(); for (unsigned i = 0, N = Values.size(); i < N; ++i) - Values[i]->EmitValue(D, AbbrevData[i].getForm()); + 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, dwarf::Form 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 + 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); }