forked from OSchip/llvm-project
237 lines
8.7 KiB
C++
237 lines
8.7 KiB
C++
//===-- llvm/CodeGen/DwarfCompileUnit.h - Dwarf Compile Unit ---*- C++ -*--===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains support for writing dwarf compile unit.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
|
|
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
|
|
|
|
#include "DwarfUnit.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/IR/DebugInfo.h"
|
|
#include "llvm/Support/Dwarf.h"
|
|
|
|
namespace llvm {
|
|
|
|
class AsmPrinter;
|
|
class DIE;
|
|
class DwarfDebug;
|
|
class DwarfFile;
|
|
class MCSymbol;
|
|
class LexicalScope;
|
|
|
|
class DwarfCompileUnit : public DwarfUnit {
|
|
/// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding
|
|
/// the need to search for it in applyStmtList.
|
|
unsigned stmtListIndex;
|
|
|
|
/// Skeleton unit associated with this unit.
|
|
DwarfCompileUnit *Skeleton;
|
|
|
|
/// The start of the unit within its section.
|
|
MCSymbol *LabelBegin;
|
|
|
|
/// GlobalNames - A map of globally visible named entities for this unit.
|
|
StringMap<const DIE *> GlobalNames;
|
|
|
|
/// GlobalTypes - A map of globally visible types for this unit.
|
|
StringMap<const DIE *> GlobalTypes;
|
|
|
|
// List of range lists for a given compile unit, separate from the ranges for
|
|
// the CU itself.
|
|
SmallVector<RangeSpanList, 1> CURangeLists;
|
|
|
|
// List of ranges for a given compile unit.
|
|
SmallVector<RangeSpan, 2> CURanges;
|
|
|
|
// The base address of this unit, if any. Used for relative references in
|
|
// ranges/locs.
|
|
const MCSymbol *BaseAddress;
|
|
|
|
/// \brief Construct a DIE for the given DbgVariable without initializing the
|
|
/// DbgVariable's DIE reference.
|
|
std::unique_ptr<DIE> constructVariableDIEImpl(const DbgVariable &DV,
|
|
bool Abstract);
|
|
|
|
bool isDwoUnit() const override;
|
|
|
|
bool includeMinimalInlineScopes() const;
|
|
|
|
public:
|
|
DwarfCompileUnit(unsigned UID, const DICompileUnit *Node, AsmPrinter *A,
|
|
DwarfDebug *DW, DwarfFile *DWU);
|
|
|
|
DwarfCompileUnit *getSkeleton() const {
|
|
return Skeleton;
|
|
}
|
|
|
|
void initStmtList();
|
|
|
|
/// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
|
|
void applyStmtList(DIE &D);
|
|
|
|
/// getOrCreateGlobalVariableDIE - get or create global variable DIE.
|
|
DIE *getOrCreateGlobalVariableDIE(const DIGlobalVariable *GV);
|
|
|
|
/// addLabelAddress - Add a dwarf label attribute data and value using
|
|
/// either DW_FORM_addr or DW_FORM_GNU_addr_index.
|
|
void addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
|
|
const MCSymbol *Label);
|
|
|
|
/// addLocalLabelAddress - Add a dwarf label attribute data and value using
|
|
/// DW_FORM_addr only.
|
|
void addLocalLabelAddress(DIE &Die, dwarf::Attribute Attribute,
|
|
const MCSymbol *Label);
|
|
|
|
/// addSectionDelta - Add a label delta attribute data and value.
|
|
void addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
|
|
const MCSymbol *Lo);
|
|
|
|
DwarfCompileUnit &getCU() override { return *this; }
|
|
|
|
unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override;
|
|
|
|
/// addRange - Add an address range to the list of ranges for this unit.
|
|
void addRange(RangeSpan Range);
|
|
|
|
void attachLowHighPC(DIE &D, const MCSymbol *Begin, const MCSymbol *End);
|
|
|
|
/// addSectionLabel - Add a Dwarf section label attribute data and value.
|
|
///
|
|
void addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
|
|
const MCSymbol *Label, const MCSymbol *Sec);
|
|
|
|
/// \brief Find DIE for the given subprogram and attach appropriate
|
|
/// DW_AT_low_pc and DW_AT_high_pc attributes. If there are global
|
|
/// variables in this scope then create and insert DIEs for these
|
|
/// variables.
|
|
DIE &updateSubprogramScopeDIE(const DISubprogram *SP);
|
|
|
|
void constructScopeDIE(LexicalScope *Scope,
|
|
SmallVectorImpl<std::unique_ptr<DIE>> &FinalChildren);
|
|
|
|
/// \brief A helper function to construct a RangeSpanList for a given
|
|
/// lexical scope.
|
|
void addScopeRangeList(DIE &ScopeDIE, SmallVector<RangeSpan, 2> Range);
|
|
|
|
void attachRangesOrLowHighPC(DIE &D, SmallVector<RangeSpan, 2> Ranges);
|
|
|
|
void attachRangesOrLowHighPC(DIE &D,
|
|
const SmallVectorImpl<InsnRange> &Ranges);
|
|
/// \brief This scope represents inlined body of a function. Construct
|
|
/// DIE to represent this concrete inlined copy of the function.
|
|
std::unique_ptr<DIE> constructInlinedScopeDIE(LexicalScope *Scope);
|
|
|
|
/// \brief Construct new DW_TAG_lexical_block for this scope and
|
|
/// attach DW_AT_low_pc/DW_AT_high_pc labels.
|
|
std::unique_ptr<DIE> constructLexicalScopeDIE(LexicalScope *Scope);
|
|
|
|
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
|
|
std::unique_ptr<DIE> constructVariableDIE(DbgVariable &DV,
|
|
bool Abstract = false);
|
|
|
|
std::unique_ptr<DIE> constructVariableDIE(DbgVariable &DV,
|
|
const LexicalScope &Scope,
|
|
DIE *&ObjectPointer);
|
|
|
|
/// A helper function to create children of a Scope DIE.
|
|
DIE *createScopeChildrenDIE(LexicalScope *Scope,
|
|
SmallVectorImpl<std::unique_ptr<DIE>> &Children,
|
|
unsigned *ChildScopeCount = nullptr);
|
|
|
|
/// \brief Construct a DIE for this subprogram scope.
|
|
void constructSubprogramScopeDIE(LexicalScope *Scope);
|
|
|
|
DIE *createAndAddScopeChildren(LexicalScope *Scope, DIE &ScopeDIE);
|
|
|
|
void constructAbstractSubprogramScopeDIE(LexicalScope *Scope);
|
|
|
|
/// \brief Construct import_module DIE.
|
|
std::unique_ptr<DIE>
|
|
constructImportedEntityDIE(const DIImportedEntity *Module);
|
|
|
|
void finishSubprogramDefinition(const DISubprogram *SP);
|
|
|
|
void collectDeadVariables(const DISubprogram *SP);
|
|
|
|
/// Set the skeleton unit associated with this unit.
|
|
void setSkeleton(DwarfCompileUnit &Skel) { Skeleton = &Skel; }
|
|
|
|
const MCSymbol *getSectionSym() const {
|
|
assert(Section);
|
|
return Section->getBeginSymbol();
|
|
}
|
|
|
|
unsigned getLength() {
|
|
return sizeof(uint32_t) + // Length field
|
|
getHeaderSize() + UnitDie.getSize();
|
|
}
|
|
|
|
void emitHeader(bool UseOffsets) override;
|
|
|
|
MCSymbol *getLabelBegin() const {
|
|
assert(Section);
|
|
return LabelBegin;
|
|
}
|
|
|
|
/// Add a new global name to the compile unit.
|
|
void addGlobalName(StringRef Name, DIE &Die, const DIScope *Context) override;
|
|
|
|
/// Add a new global type to the compile unit.
|
|
void addGlobalType(const DIType *Ty, const DIE &Die,
|
|
const DIScope *Context) override;
|
|
|
|
const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
|
|
const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
|
|
|
|
/// Add DW_AT_location attribute for a DbgVariable based on provided
|
|
/// MachineLocation.
|
|
void addVariableAddress(const DbgVariable &DV, DIE &Die,
|
|
MachineLocation Location);
|
|
/// Add an address attribute to a die based on the location provided.
|
|
void addAddress(DIE &Die, dwarf::Attribute Attribute,
|
|
const MachineLocation &Location);
|
|
|
|
/// Start with the address based on the location provided, and generate the
|
|
/// DWARF information necessary to find the actual variable (navigating the
|
|
/// extra location information encoded in the type) based on the starting
|
|
/// location. Add the DWARF information to the die.
|
|
void addComplexAddress(const DbgVariable &DV, DIE &Die,
|
|
dwarf::Attribute Attribute,
|
|
const MachineLocation &Location);
|
|
|
|
/// Add a Dwarf loclistptr attribute data and value.
|
|
void addLocationList(DIE &Die, dwarf::Attribute Attribute, unsigned Index);
|
|
void applyVariableAttributes(const DbgVariable &Var, DIE &VariableDie);
|
|
|
|
/// Add a Dwarf expression attribute data and value.
|
|
void addExpr(DIELoc &Die, dwarf::Form Form, const MCExpr *Expr);
|
|
|
|
void applySubprogramAttributesToDefinition(const DISubprogram *SP,
|
|
DIE &SPDie);
|
|
|
|
/// getRangeLists - Get the vector of range lists.
|
|
const SmallVectorImpl<RangeSpanList> &getRangeLists() const {
|
|
return (Skeleton ? Skeleton : this)->CURangeLists;
|
|
}
|
|
|
|
/// getRanges - Get the list of ranges for this unit.
|
|
const SmallVectorImpl<RangeSpan> &getRanges() const { return CURanges; }
|
|
SmallVector<RangeSpan, 2> takeRanges() { return std::move(CURanges); }
|
|
|
|
void setBaseAddress(const MCSymbol *Base) { BaseAddress = Base; }
|
|
const MCSymbol *getBaseAddress() const { return BaseAddress; }
|
|
};
|
|
|
|
} // end llvm namespace
|
|
|
|
#endif
|