1 //===-- DWARFFormValue.h ----------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef SymbolFileDWARF_DWARFFormValue_h_ 11 #define SymbolFileDWARF_DWARFFormValue_h_ 12 13 #include <stddef.h> // for NULL 14 15 class DWARFCompileUnit; 16 17 class DWARFFormValue 18 { 19 public: 20 typedef struct ValueTypeTag 21 { 22 ValueTypeTag() : 23 value(), 24 data(NULL) 25 { 26 value.uval = 0; 27 } 28 29 union 30 { 31 uint64_t uval; 32 int64_t sval; 33 const char* cstr; 34 } value; 35 const uint8_t* data; 36 } ValueType; 37 38 enum 39 { 40 eValueTypeInvalid = 0, 41 eValueTypeUnsigned, 42 eValueTypeSigned, 43 eValueTypeCStr, 44 eValueTypeBlock 45 }; 46 47 DWARFFormValue(dw_form_t form = 0); 48 dw_form_t Form() const { return m_form; } 49 void SetForm(dw_form_t form) { m_form = form; } 50 const ValueType& Value() const { return m_value; } 51 void Dump(lldb_private::Stream &s, const lldb_private::DataExtractor* debug_str_data, const DWARFCompileUnit* cu) const; 52 bool ExtractValue(const lldb_private::DataExtractor& data, 53 lldb::offset_t* offset_ptr, 54 const DWARFCompileUnit* cu); 55 bool IsInlinedCStr() const { return (m_value.data != NULL) && m_value.data == (uint8_t*)m_value.value.cstr; } 56 const uint8_t* BlockData() const; 57 uint64_t Reference(const DWARFCompileUnit* cu) const; 58 uint64_t Reference (dw_offset_t offset) const; 59 bool ResolveCompileUnitReferences(const DWARFCompileUnit* cu); 60 bool Boolean() const { return m_value.value.uval != 0; } 61 uint64_t Unsigned() const { return m_value.value.uval; } 62 void SetUnsigned(uint64_t uval) { m_value.value.uval = uval; } 63 int64_t Signed() const { return m_value.value.sval; } 64 void SetSigned(int64_t sval) { m_value.value.sval = sval; } 65 const char* AsCString(const lldb_private::DataExtractor* debug_str_data_ptr) const; 66 bool SkipValue(const lldb_private::DataExtractor& debug_info_data, lldb::offset_t *offset_ptr, const DWARFCompileUnit* cu) const; 67 static bool SkipValue(const dw_form_t form, const lldb_private::DataExtractor& debug_info_data, lldb::offset_t *offset_ptr, const DWARFCompileUnit* cu); 68 // static bool TransferValue(dw_form_t form, const lldb_private::DataExtractor& debug_info_data, lldb::offset_t *offset_ptr, const DWARFCompileUnit* cu, BinaryStreamBuf& out_buff); 69 // static bool TransferValue(const DWARFFormValue& formValue, const DWARFCompileUnit* cu, BinaryStreamBuf& out_buff); 70 // static bool PutUnsigned(dw_form_t form, dw_offset_t offset, uint64_t value, BinaryStreamBuf& out_buff, const DWARFCompileUnit* cu, bool fixup_cu_relative_refs); 71 static bool IsBlockForm(const dw_form_t form); 72 static bool IsDataForm(const dw_form_t form); 73 static const uint8_t * GetFixedFormSizesForAddressSize (uint8_t addr_size); 74 static int Compare (const DWARFFormValue& a, const DWARFFormValue& b, const DWARFCompileUnit* a_cu, const DWARFCompileUnit* b_cu, const lldb_private::DataExtractor* debug_str_data_ptr); 75 protected: 76 dw_form_t m_form; // Form for this value 77 ValueType m_value; // Contains all data for the form 78 }; 79 80 81 #endif // SymbolFileDWARF_DWARFFormValue_h_ 82
