1 //===-- DWARFFormValue.h ----------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_DEBUGINFO_DWARFFORMVALUE_H
11 #define LLVM_DEBUGINFO_DWARFFORMVALUE_H
13 #include "llvm/Support/DataExtractor.h"
17 class DWARFCompileUnit;
20 class DWARFFormValue {
23 ValueType() : data(NULL) {
36 eValueTypeInvalid = 0,
44 uint16_t Form; // Form for this value.
45 ValueType Value; // Contains all data for the form.
48 DWARFFormValue(uint16_t form = 0) : Form(form) {}
49 uint16_t getForm() const { return Form; }
50 const ValueType& value() const { return Value; }
51 void dump(raw_ostream &OS, const DWARFCompileUnit* cu) const;
52 bool extractValue(DataExtractor data, uint32_t *offset_ptr,
53 const DWARFCompileUnit *cu);
54 bool isInlinedCStr() const {
55 return Value.data != NULL && Value.data == (uint8_t*)Value.cstr;
57 const uint8_t *BlockData() const;
58 uint64_t getReference(const DWARFCompileUnit* cu) const;
60 /// Resolve any compile unit specific references so that we don't need
61 /// the compile unit at a later time in order to work with the form
63 bool resolveCompileUnitReferences(const DWARFCompileUnit* cu);
64 uint64_t getUnsigned() const { return Value.uval; }
65 int64_t getSigned() const { return Value.sval; }
66 const char *getAsCString(const DataExtractor *debug_str_data_ptr) const;
67 bool skipValue(DataExtractor debug_info_data, uint32_t *offset_ptr,
68 const DWARFCompileUnit *cu) const;
69 static bool skipValue(uint16_t form, DataExtractor debug_info_data,
70 uint32_t *offset_ptr, const DWARFCompileUnit *cu);
71 static bool isBlockForm(uint16_t form);
72 static bool isDataForm(uint16_t form);
73 static const uint8_t *getFixedFormSizesForAddressSize(uint8_t addr_size);