1 //===-- DWARFFormValue.cpp ------------------------------------------------===//
8 //===----------------------------------------------------------------------===//
87   // --- These can be FC_SectionOffset in DWARF3 and below:
90   // ---
112   // First, check DWARF4 form classes.  in isFormClass()
113   if (Form < makeArrayRef(DWARF4FormClasses).size() &&  in isFormClass()
114       DWARF4FormClasses[Form] == FC)  in isFormClass()
117   switch (Form) {  in isFormClass()
130   return (Form == DW_FORM_data4 || Form == DW_FORM_data8) &&  in isFormClass()
134 bool DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr,  in extractValue()  argument
138   Value.data = nullptr;  in extractValue()
139   // Read the value for the form into value and follow and DW_FORM_indirect  in extractValue()
143     switch (Form) {  in extractValue()
149           (Form == DW_FORM_addr)  in extractValue()
150               ? cu->getAddressByteSize()  in extractValue()
151               : getRefAddrSize(cu->getAddressByteSize(), cu->getVersion());  in extractValue()
152       RelocAddrMap::const_iterator AI = cu->getRelocMap()->find(*offset_ptr);  in extractValue()
153       if (AI != cu->getRelocMap()->end()) {  in extractValue()
154         const std::pair<uint8_t, int64_t> &R = AI->second;  in extractValue()
155         Value.uval = data.getUnsigned(offset_ptr, AddrSize) + R.second;  in extractValue()
157         Value.uval = data.getUnsigned(offset_ptr, AddrSize);  in extractValue()
162       Value.uval = data.getULEB128(offset_ptr);  in extractValue()
166       Value.uval = data.getU8(offset_ptr);  in extractValue()
170       Value.uval = data.getU16(offset_ptr);  in extractValue()
174       Value.uval = data.getU32(offset_ptr);  in extractValue()
180       Value.uval = data.getU8(offset_ptr);  in extractValue()
184       Value.uval = data.getU16(offset_ptr);  in extractValue()
188       Value.uval = data.getU32(offset_ptr);  in extractValue()
191       RelocAddrMap::const_iterator AI = cu->getRelocMap()->find(*offset_ptr-4);  in extractValue()
192       if (AI != cu->getRelocMap()->end())  in extractValue()
193         Value.uval += AI->second.second;  in extractValue()
198       Value.uval = data.getU64(offset_ptr);  in extractValue()
201       Value.sval = data.getSLEB128(offset_ptr);  in extractValue()
205       Value.uval = data.getULEB128(offset_ptr);  in extractValue()
208       Value.cstr = data.getCStr(offset_ptr);  in extractValue()
211       Form = data.getULEB128(offset_ptr);  in extractValue()
218       // FIXME: This is 64-bit for DWARF64.  in extractValue()
219       Value.uval = data.getU32(offset_ptr);  in extractValue()
223           cu->getRelocMap()->find(*offset_ptr - 4);  in extractValue()
224       if (AI != cu->getRelocMap()->end())  in extractValue()
225         Value.uval += AI->second.second;  in extractValue()
232       Value.uval = data.getU64(offset_ptr);  in extractValue()
236       Value.uval = data.getULEB128(offset_ptr);  in extractValue()
244     StringRef str = data.getData().substr(*offset_ptr, Value.uval);  in extractValue()
245     Value.data = nullptr;  in extractValue()
247       Value.data = reinterpret_cast<const uint8_t *>(str.data());  in extractValue()
258   return DWARFFormValue::skipValue(Form, debug_info_data, offset_ptr, cu);  in skipValue()
262 DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data,  in skipValue()  argument
264   return skipValue(form, debug_info_data, offset_ptr, cu->getVersion(),  in skipValue()
265                    cu->getAddressByteSize());  in skipValue()
267 bool DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data,  in skipValue()  argument
272     switch (form) {  in skipValue()
273     // Blocks if inlined data that have a length field and the data bytes  in skipValue()
297     // Inlined NULL terminated C-strings  in skipValue()
310     // 0 byte values - implied from the form.  in skipValue()
352       form = debug_info_data.getULEB128(offset_ptr);  in skipValue()
375   switch (Form) {  in dump()
380     if (cu->getAddrOffsetSectionItem(uvalue, Address))  in dump()
404       switch (Form) {  in dump()
413       const uint8_t* data_ptr = Value.data;  in dump()
477     // Should be formatted to 64-bit for DWARF64.  in dump()
483     OS << format("DW_FORM(0x%4.4x)", Form);  in dump()
490       << format("0x%8.8" PRIx64, uvalue + (cu ? cu->getOffset() : 0));  in dump()
508   if (Form == DW_FORM_string)  in getAsCString()
511   if (Form == DW_FORM_GNU_strp_alt || U == nullptr)  in getAsCString()
514   if (Form == DW_FORM_GNU_str_index) {  in getAsCString()
516     if (!U->getStringOffsetSectionItem(Offset, StrOffset))  in getAsCString()
520   if (const char *Str = U->getStringExtractor().getCStr(&Offset)) {  in getAsCString()
529   if (Form == DW_FORM_GNU_addr_index) {  in getAsAddress()
532     if (!U || !U->getAddrOffsetSectionItem(Index, Result))  in getAsAddress()
542   switch (Form) {  in getAsReference()
550     return Value.uval + U->getOffset();  in getAsReference()
567       || Form == DW_FORM_sdata)  in getAsUnsignedConstant()
574       (Form == DW_FORM_udata && uint64_t(std::numeric_limits<int64_t>::max()) < Value.uval))  in getAsSignedConstant()
576   switch (Form) {  in getAsSignedConstant()
593   return makeArrayRef(Value.data, Value.uval);  in getAsBlock()