| //===-- Address.cpp -------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Core/Address.h" |
| #include "lldb/Core/Declaration.h" |
| #include "lldb/Core/DumpDataExtractor.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleList.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Symbol/Block.h" |
| #include "lldb/Symbol/LineEntry.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Symbol/Symbol.h" |
| #include "lldb/Symbol/SymbolContext.h" |
| #include "lldb/Symbol/SymbolVendor.h" |
| #include "lldb/Symbol/Symtab.h" |
| #include "lldb/Symbol/Type.h" |
| #include "lldb/Symbol/Variable.h" |
| #include "lldb/Symbol/VariableList.h" |
| #include "lldb/Target/ExecutionContext.h" |
| #include "lldb/Target/ExecutionContextScope.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/SectionLoadList.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Utility/ConstString.h" |
| #include "lldb/Utility/DataExtractor.h" |
| #include "lldb/Utility/Endian.h" |
| #include "lldb/Utility/FileSpec.h" |
| #include "lldb/Utility/Status.h" |
| #include "lldb/Utility/Stream.h" |
| #include "lldb/Utility/StreamString.h" |
| |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/Support/Compiler.h" |
| |
| #include <cstdint> |
| #include <memory> |
| #include <vector> |
| |
| #include <cassert> |
| #include <cinttypes> |
| #include <cstring> |
| |
| namespace lldb_private { |
| class CompileUnit; |
| } |
| namespace lldb_private { |
| class Function; |
| } |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| static size_t ReadBytes(ExecutionContextScope *exe_scope, |
| const Address &address, void *dst, size_t dst_len) { |
| if (exe_scope == nullptr) |
| return 0; |
| |
| TargetSP target_sp(exe_scope->CalculateTarget()); |
| if (target_sp) { |
| Status error; |
| bool force_live_memory = true; |
| return target_sp->ReadMemory(address, dst, dst_len, error, |
| force_live_memory); |
| } |
| return 0; |
| } |
| |
| static bool GetByteOrderAndAddressSize(ExecutionContextScope *exe_scope, |
| const Address &address, |
| ByteOrder &byte_order, |
| uint32_t &addr_size) { |
| byte_order = eByteOrderInvalid; |
| addr_size = 0; |
| if (exe_scope == nullptr) |
| return false; |
| |
| TargetSP target_sp(exe_scope->CalculateTarget()); |
| if (target_sp) { |
| byte_order = target_sp->GetArchitecture().GetByteOrder(); |
| addr_size = target_sp->GetArchitecture().GetAddressByteSize(); |
| } |
| |
| if (byte_order == eByteOrderInvalid || addr_size == 0) { |
| ModuleSP module_sp(address.GetModule()); |
| if (module_sp) { |
| byte_order = module_sp->GetArchitecture().GetByteOrder(); |
| addr_size = module_sp->GetArchitecture().GetAddressByteSize(); |
| } |
| } |
| return byte_order != eByteOrderInvalid && addr_size != 0; |
| } |
| |
| static uint64_t ReadUIntMax64(ExecutionContextScope *exe_scope, |
| const Address &address, uint32_t byte_size, |
| bool &success) { |
| uint64_t uval64 = 0; |
| if (exe_scope == nullptr || byte_size > sizeof(uint64_t)) { |
| success = false; |
| return 0; |
| } |
| uint64_t buf = 0; |
| |
| success = ReadBytes(exe_scope, address, &buf, byte_size) == byte_size; |
| if (success) { |
| ByteOrder byte_order = eByteOrderInvalid; |
| uint32_t addr_size = 0; |
| if (GetByteOrderAndAddressSize(exe_scope, address, byte_order, addr_size)) { |
| DataExtractor data(&buf, sizeof(buf), byte_order, addr_size); |
| lldb::offset_t offset = 0; |
| uval64 = data.GetU64(&offset); |
| } else |
| success = false; |
| } |
| return uval64; |
| } |
| |
| static bool ReadAddress(ExecutionContextScope *exe_scope, |
| const Address &address, uint32_t pointer_size, |
| Address &deref_so_addr) { |
| if (exe_scope == nullptr) |
| return false; |
| |
| bool success = false; |
| addr_t deref_addr = ReadUIntMax64(exe_scope, address, pointer_size, success); |
| if (success) { |
| ExecutionContext exe_ctx; |
| exe_scope->CalculateExecutionContext(exe_ctx); |
| // If we have any sections that are loaded, try and resolve using the |
| // section load list |
| Target *target = exe_ctx.GetTargetPtr(); |
| if (target && !target->GetSectionLoadList().IsEmpty()) { |
| if (target->GetSectionLoadList().ResolveLoadAddress(deref_addr, |
| deref_so_addr)) |
| return true; |
| } else { |
| // If we were not running, yet able to read an integer, we must have a |
| // module |
| ModuleSP module_sp(address.GetModule()); |
| |
| assert(module_sp); |
| if (module_sp->ResolveFileAddress(deref_addr, deref_so_addr)) |
| return true; |
| } |
| |
| // We couldn't make "deref_addr" into a section offset value, but we were |
| // able to read the address, so we return a section offset address with no |
| // section and "deref_addr" as the offset (address). |
| deref_so_addr.SetRawAddress(deref_addr); |
| return true; |
| } |
| return false; |
| } |
| |
| static bool DumpUInt(ExecutionContextScope *exe_scope, const Address &address, |
| uint32_t byte_size, Stream *strm) { |
| if (exe_scope == nullptr || byte_size == 0) |
| return false; |
| std::vector<uint8_t> buf(byte_size, 0); |
| |
| if (ReadBytes(exe_scope, address, &buf[0], buf.size()) == buf.size()) { |
| ByteOrder byte_order = eByteOrderInvalid; |
| uint32_t addr_size = 0; |
| if (GetByteOrderAndAddressSize(exe_scope, address, byte_order, addr_size)) { |
| DataExtractor data(&buf.front(), buf.size(), byte_order, addr_size); |
| |
| DumpDataExtractor(data, strm, |
| 0, // Start offset in "data" |
| eFormatHex, // Print as characters |
| buf.size(), // Size of item |
| 1, // Items count |
| UINT32_MAX, // num per line |
| LLDB_INVALID_ADDRESS, // base address |
| 0, // bitfield bit size |
| 0); // bitfield bit offset |
| |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| static size_t ReadCStringFromMemory(ExecutionContextScope *exe_scope, |
| const Address &address, Stream *strm) { |
| if (exe_scope == nullptr) |
| return 0; |
| const size_t k_buf_len = 256; |
| char buf[k_buf_len + 1]; |
| buf[k_buf_len] = '\0'; // NULL terminate |
| |
| // Byte order and address size don't matter for C string dumping.. |
| DataExtractor data(buf, sizeof(buf), endian::InlHostByteOrder(), 4); |
| size_t total_len = 0; |
| size_t bytes_read; |
| Address curr_address(address); |
| strm->PutChar('"'); |
| while ((bytes_read = ReadBytes(exe_scope, curr_address, buf, k_buf_len)) > |
| 0) { |
| size_t len = strlen(buf); |
| if (len == 0) |
| break; |
| if (len > bytes_read) |
| len = bytes_read; |
| |
| DumpDataExtractor(data, strm, |
| 0, // Start offset in "data" |
| eFormatChar, // Print as characters |
| 1, // Size of item (1 byte for a char!) |
| len, // How many bytes to print? |
| UINT32_MAX, // num per line |
| LLDB_INVALID_ADDRESS, // base address |
| 0, // bitfield bit size |
| |
| 0); // bitfield bit offset |
| |
| total_len += bytes_read; |
| |
| if (len < k_buf_len) |
| break; |
| curr_address.SetOffset(curr_address.GetOffset() + bytes_read); |
| } |
| strm->PutChar('"'); |
| return total_len; |
| } |
| |
| Address::Address(lldb::addr_t abs_addr) : m_section_wp(), m_offset(abs_addr) {} |
| |
| Address::Address(addr_t address, const SectionList *section_list) |
| : m_section_wp(), m_offset(LLDB_INVALID_ADDRESS) { |
| ResolveAddressUsingFileSections(address, section_list); |
| } |
| |
| const Address &Address::operator=(const Address &rhs) { |
| if (this != &rhs) { |
| m_section_wp = rhs.m_section_wp; |
| m_offset = rhs.m_offset; |
| } |
| return *this; |
| } |
| |
| bool Address::ResolveAddressUsingFileSections(addr_t file_addr, |
| const SectionList *section_list) { |
| if (section_list) { |
| SectionSP section_sp( |
| section_list->FindSectionContainingFileAddress(file_addr)); |
| m_section_wp = section_sp; |
| if (section_sp) { |
| assert(section_sp->ContainsFileAddress(file_addr)); |
| m_offset = file_addr - section_sp->GetFileAddress(); |
| return true; // Successfully transformed addr into a section offset |
| // address |
| } |
| } |
| m_offset = file_addr; |
| return false; // Failed to resolve this address to a section offset value |
| } |
| |
| /// if "addr_range_ptr" is not NULL, then fill in with the address range of the function. |
| bool Address::ResolveFunctionScope(SymbolContext &sym_ctx, |
| AddressRange *addr_range_ptr) { |
| constexpr SymbolContextItem resolve_scope = |
| eSymbolContextFunction | eSymbolContextSymbol; |
| |
| if (!(CalculateSymbolContext(&sym_ctx, resolve_scope) & resolve_scope)) { |
| if (addr_range_ptr) |
| addr_range_ptr->Clear(); |
| return false; |
| } |
| |
| if (!addr_range_ptr) |
| return true; |
| |
| return sym_ctx.GetAddressRange(resolve_scope, 0, false, *addr_range_ptr); |
| } |
| |
| ModuleSP Address::GetModule() const { |
| lldb::ModuleSP module_sp; |
| SectionSP section_sp(GetSection()); |
| if (section_sp) |
| module_sp = section_sp->GetModule(); |
| return module_sp; |
| } |
| |
| addr_t Address::GetFileAddress() const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| addr_t sect_file_addr = section_sp->GetFileAddress(); |
| if (sect_file_addr == LLDB_INVALID_ADDRESS) { |
| // Section isn't resolved, we can't return a valid file address |
| return LLDB_INVALID_ADDRESS; |
| } |
| // We have a valid file range, so we can return the file based address by |
| // adding the file base address to our offset |
| return sect_file_addr + m_offset; |
| } else if (SectionWasDeletedPrivate()) { |
| // Used to have a valid section but it got deleted so the offset doesn't |
| // mean anything without the section |
| return LLDB_INVALID_ADDRESS; |
| } |
| // No section, we just return the offset since it is the value in this case |
| return m_offset; |
| } |
| |
| addr_t Address::GetLoadAddress(Target *target) const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| if (target) { |
| addr_t sect_load_addr = section_sp->GetLoadBaseAddress(target); |
| |
| if (sect_load_addr != LLDB_INVALID_ADDRESS) { |
| // We have a valid file range, so we can return the file based address |
| // by adding the file base address to our offset |
| return sect_load_addr + m_offset; |
| } |
| } |
| } else if (SectionWasDeletedPrivate()) { |
| // Used to have a valid section but it got deleted so the offset doesn't |
| // mean anything without the section |
| return LLDB_INVALID_ADDRESS; |
| } else { |
| // We don't have a section so the offset is the load address |
| return m_offset; |
| } |
| // The section isn't resolved or an invalid target was passed in so we can't |
| // return a valid load address. |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| addr_t Address::GetCallableLoadAddress(Target *target, bool is_indirect) const { |
| addr_t code_addr = LLDB_INVALID_ADDRESS; |
| |
| if (is_indirect && target) { |
| ProcessSP processSP = target->GetProcessSP(); |
| Status error; |
| if (processSP) { |
| code_addr = processSP->ResolveIndirectFunction(this, error); |
| if (!error.Success()) |
| code_addr = LLDB_INVALID_ADDRESS; |
| } |
| } else { |
| code_addr = GetLoadAddress(target); |
| } |
| |
| if (code_addr == LLDB_INVALID_ADDRESS) |
| return code_addr; |
| |
| if (target) |
| return target->GetCallableLoadAddress(code_addr, GetAddressClass()); |
| return code_addr; |
| } |
| |
| bool Address::SetCallableLoadAddress(lldb::addr_t load_addr, Target *target) { |
| if (SetLoadAddress(load_addr, target)) { |
| if (target) |
| m_offset = target->GetCallableLoadAddress(m_offset, GetAddressClass()); |
| return true; |
| } |
| return false; |
| } |
| |
| addr_t Address::GetOpcodeLoadAddress(Target *target, |
| AddressClass addr_class) const { |
| addr_t code_addr = GetLoadAddress(target); |
| if (code_addr != LLDB_INVALID_ADDRESS) { |
| if (addr_class == AddressClass::eInvalid) |
| addr_class = GetAddressClass(); |
| code_addr = target->GetOpcodeLoadAddress(code_addr, addr_class); |
| } |
| return code_addr; |
| } |
| |
| bool Address::SetOpcodeLoadAddress(lldb::addr_t load_addr, Target *target, |
| AddressClass addr_class, |
| bool allow_section_end) { |
| if (SetLoadAddress(load_addr, target, allow_section_end)) { |
| if (target) { |
| if (addr_class == AddressClass::eInvalid) |
| addr_class = GetAddressClass(); |
| m_offset = target->GetOpcodeLoadAddress(m_offset, addr_class); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| bool Address::GetDescription(Stream &s, Target &target, |
| DescriptionLevel level) const { |
| assert(level == eDescriptionLevelBrief && |
| "Non-brief descriptions not implemented"); |
| LineEntry line_entry; |
| if (CalculateSymbolContextLineEntry(line_entry)) { |
| s.Printf(" (%s:%u:%u)", line_entry.file.GetFilename().GetCString(), |
| line_entry.line, line_entry.column); |
| return true; |
| } |
| return false; |
| } |
| |
| bool Address::Dump(Stream *s, ExecutionContextScope *exe_scope, DumpStyle style, |
| DumpStyle fallback_style, uint32_t addr_size) const { |
| // If the section was nullptr, only load address is going to work unless we |
| // are trying to deref a pointer |
| SectionSP section_sp(GetSection()); |
| if (!section_sp && style != DumpStyleResolvedPointerDescription) |
| style = DumpStyleLoadAddress; |
| |
| ExecutionContext exe_ctx(exe_scope); |
| Target *target = exe_ctx.GetTargetPtr(); |
| // If addr_byte_size is UINT32_MAX, then determine the correct address byte |
| // size for the process or default to the size of addr_t |
| if (addr_size == UINT32_MAX) { |
| if (target) |
| addr_size = target->GetArchitecture().GetAddressByteSize(); |
| else |
| addr_size = sizeof(addr_t); |
| } |
| |
| Address so_addr; |
| switch (style) { |
| case DumpStyleInvalid: |
| return false; |
| |
| case DumpStyleSectionNameOffset: |
| if (section_sp) { |
| section_sp->DumpName(s->AsRawOstream()); |
| s->Printf(" + %" PRIu64, m_offset); |
| } else { |
| DumpAddress(s->AsRawOstream(), m_offset, addr_size); |
| } |
| break; |
| |
| case DumpStyleSectionPointerOffset: |
| s->Printf("(Section *)%p + ", static_cast<void *>(section_sp.get())); |
| DumpAddress(s->AsRawOstream(), m_offset, addr_size); |
| break; |
| |
| case DumpStyleModuleWithFileAddress: |
| if (section_sp) { |
| ModuleSP module_sp = section_sp->GetModule(); |
| if (module_sp) |
| s->Printf("%s[", module_sp->GetFileSpec().GetFilename().AsCString( |
| "<Unknown>")); |
| else |
| s->Printf("%s[", "<Unknown>"); |
| } |
| LLVM_FALLTHROUGH; |
| case DumpStyleFileAddress: { |
| addr_t file_addr = GetFileAddress(); |
| if (file_addr == LLDB_INVALID_ADDRESS) { |
| if (fallback_style != DumpStyleInvalid) |
| return Dump(s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| } |
| DumpAddress(s->AsRawOstream(), file_addr, addr_size); |
| if (style == DumpStyleModuleWithFileAddress && section_sp) |
| s->PutChar(']'); |
| } break; |
| |
| case DumpStyleLoadAddress: { |
| addr_t load_addr = GetLoadAddress(target); |
| |
| /* |
| * MIPS: |
| * Display address in compressed form for MIPS16 or microMIPS |
| * if the address belongs to AddressClass::eCodeAlternateISA. |
| */ |
| if (target) { |
| const llvm::Triple::ArchType llvm_arch = |
| target->GetArchitecture().GetMachine(); |
| if (llvm_arch == llvm::Triple::mips || |
| llvm_arch == llvm::Triple::mipsel || |
| llvm_arch == llvm::Triple::mips64 || |
| llvm_arch == llvm::Triple::mips64el) |
| load_addr = GetCallableLoadAddress(target); |
| } |
| |
| if (load_addr == LLDB_INVALID_ADDRESS) { |
| if (fallback_style != DumpStyleInvalid) |
| return Dump(s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| } |
| DumpAddress(s->AsRawOstream(), load_addr, addr_size); |
| } break; |
| |
| case DumpStyleResolvedDescription: |
| case DumpStyleResolvedDescriptionNoModule: |
| case DumpStyleResolvedDescriptionNoFunctionArguments: |
| case DumpStyleNoFunctionName: |
| if (IsSectionOffset()) { |
| uint32_t pointer_size = 4; |
| ModuleSP module_sp(GetModule()); |
| if (target) |
| pointer_size = target->GetArchitecture().GetAddressByteSize(); |
| else if (module_sp) |
| pointer_size = module_sp->GetArchitecture().GetAddressByteSize(); |
| |
| bool showed_info = false; |
| if (section_sp) { |
| SectionType sect_type = section_sp->GetType(); |
| switch (sect_type) { |
| case eSectionTypeData: |
| if (module_sp) { |
| if (Symtab *symtab = module_sp->GetSymtab()) { |
| const addr_t file_Addr = GetFileAddress(); |
| Symbol *symbol = |
| symtab->FindSymbolContainingFileAddress(file_Addr); |
| if (symbol) { |
| const char *symbol_name = symbol->GetName().AsCString(); |
| if (symbol_name) { |
| s->PutCString(symbol_name); |
| addr_t delta = |
| file_Addr - symbol->GetAddressRef().GetFileAddress(); |
| if (delta) |
| s->Printf(" + %" PRIu64, delta); |
| showed_info = true; |
| } |
| } |
| } |
| } |
| break; |
| |
| case eSectionTypeDataCString: |
| // Read the C string from memory and display it |
| showed_info = true; |
| ReadCStringFromMemory(exe_scope, *this, s); |
| break; |
| |
| case eSectionTypeDataCStringPointers: |
| if (ReadAddress(exe_scope, *this, pointer_size, so_addr)) { |
| #if VERBOSE_OUTPUT |
| s->PutCString("(char *)"); |
| so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, |
| DumpStyleFileAddress); |
| s->PutCString(": "); |
| #endif |
| showed_info = true; |
| ReadCStringFromMemory(exe_scope, so_addr, s); |
| } |
| break; |
| |
| case eSectionTypeDataObjCMessageRefs: |
| if (ReadAddress(exe_scope, *this, pointer_size, so_addr)) { |
| if (target && so_addr.IsSectionOffset()) { |
| SymbolContext func_sc; |
| target->GetImages().ResolveSymbolContextForAddress( |
| so_addr, eSymbolContextEverything, func_sc); |
| if (func_sc.function != nullptr || func_sc.symbol != nullptr) { |
| showed_info = true; |
| #if VERBOSE_OUTPUT |
| s->PutCString("(objc_msgref *) -> { (func*)"); |
| so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, |
| DumpStyleFileAddress); |
| #else |
| s->PutCString("{ "); |
| #endif |
| Address cstr_addr(*this); |
| cstr_addr.SetOffset(cstr_addr.GetOffset() + pointer_size); |
| func_sc.DumpStopContext(s, exe_scope, so_addr, true, true, |
| false, true, true); |
| if (ReadAddress(exe_scope, cstr_addr, pointer_size, so_addr)) { |
| #if VERBOSE_OUTPUT |
| s->PutCString("), (char *)"); |
| so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, |
| DumpStyleFileAddress); |
| s->PutCString(" ("); |
| #else |
| s->PutCString(", "); |
| #endif |
| ReadCStringFromMemory(exe_scope, so_addr, s); |
| } |
| #if VERBOSE_OUTPUT |
| s->PutCString(") }"); |
| #else |
| s->PutCString(" }"); |
| #endif |
| } |
| } |
| } |
| break; |
| |
| case eSectionTypeDataObjCCFStrings: { |
| Address cfstring_data_addr(*this); |
| cfstring_data_addr.SetOffset(cfstring_data_addr.GetOffset() + |
| (2 * pointer_size)); |
| if (ReadAddress(exe_scope, cfstring_data_addr, pointer_size, |
| so_addr)) { |
| #if VERBOSE_OUTPUT |
| s->PutCString("(CFString *) "); |
| cfstring_data_addr.Dump(s, exe_scope, DumpStyleLoadAddress, |
| DumpStyleFileAddress); |
| s->PutCString(" -> @"); |
| #else |
| s->PutChar('@'); |
| #endif |
| if (so_addr.Dump(s, exe_scope, DumpStyleResolvedDescription)) |
| showed_info = true; |
| } |
| } break; |
| |
| case eSectionTypeData4: |
| // Read the 4 byte data and display it |
| showed_info = true; |
| s->PutCString("(uint32_t) "); |
| DumpUInt(exe_scope, *this, 4, s); |
| break; |
| |
| case eSectionTypeData8: |
| // Read the 8 byte data and display it |
| showed_info = true; |
| s->PutCString("(uint64_t) "); |
| DumpUInt(exe_scope, *this, 8, s); |
| break; |
| |
| case eSectionTypeData16: |
| // Read the 16 byte data and display it |
| showed_info = true; |
| s->PutCString("(uint128_t) "); |
| DumpUInt(exe_scope, *this, 16, s); |
| break; |
| |
| case eSectionTypeDataPointers: |
| // Read the pointer data and display it |
| if (ReadAddress(exe_scope, *this, pointer_size, so_addr)) { |
| s->PutCString("(void *)"); |
| so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, |
| DumpStyleFileAddress); |
| |
| showed_info = true; |
| if (so_addr.IsSectionOffset()) { |
| SymbolContext pointer_sc; |
| if (target) { |
| target->GetImages().ResolveSymbolContextForAddress( |
| so_addr, eSymbolContextEverything, pointer_sc); |
| if (pointer_sc.function != nullptr || |
| pointer_sc.symbol != nullptr) { |
| s->PutCString(": "); |
| pointer_sc.DumpStopContext(s, exe_scope, so_addr, true, false, |
| false, true, true); |
| } |
| } |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| if (!showed_info) { |
| if (module_sp) { |
| SymbolContext sc; |
| module_sp->ResolveSymbolContextForAddress( |
| *this, eSymbolContextEverything, sc); |
| if (sc.function || sc.symbol) { |
| bool show_stop_context = true; |
| const bool show_module = (style == DumpStyleResolvedDescription); |
| const bool show_fullpaths = false; |
| const bool show_inlined_frames = true; |
| const bool show_function_arguments = |
| (style != DumpStyleResolvedDescriptionNoFunctionArguments); |
| const bool show_function_name = (style != DumpStyleNoFunctionName); |
| if (sc.function == nullptr && sc.symbol != nullptr) { |
| // If we have just a symbol make sure it is in the right section |
| if (sc.symbol->ValueIsAddress()) { |
| if (sc.symbol->GetAddressRef().GetSection() != GetSection()) { |
| // don't show the module if the symbol is a trampoline symbol |
| show_stop_context = false; |
| } |
| } |
| } |
| if (show_stop_context) { |
| // We have a function or a symbol from the same sections as this |
| // address. |
| sc.DumpStopContext(s, exe_scope, *this, show_fullpaths, |
| show_module, show_inlined_frames, |
| show_function_arguments, show_function_name); |
| } else { |
| // We found a symbol but it was in a different section so it |
| // isn't the symbol we should be showing, just show the section |
| // name + offset |
| Dump(s, exe_scope, DumpStyleSectionNameOffset); |
| } |
| } |
| } |
| } |
| } else { |
| if (fallback_style != DumpStyleInvalid) |
| return Dump(s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| } |
| break; |
| |
| case DumpStyleDetailedSymbolContext: |
| if (IsSectionOffset()) { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) { |
| SymbolContext sc; |
| module_sp->ResolveSymbolContextForAddress( |
| *this, eSymbolContextEverything | eSymbolContextVariable, sc); |
| if (sc.symbol) { |
| // If we have just a symbol make sure it is in the same section as |
| // our address. If it isn't, then we might have just found the last |
| // symbol that came before the address that we are looking up that |
| // has nothing to do with our address lookup. |
| if (sc.symbol->ValueIsAddress() && |
| sc.symbol->GetAddressRef().GetSection() != GetSection()) |
| sc.symbol = nullptr; |
| } |
| sc.GetDescription(s, eDescriptionLevelBrief, target); |
| |
| if (sc.block) { |
| bool can_create = true; |
| bool get_parent_variables = true; |
| bool stop_if_block_is_inlined_function = false; |
| VariableList variable_list; |
| sc.block->AppendVariables(can_create, get_parent_variables, |
| stop_if_block_is_inlined_function, |
| [](Variable *) { return true; }, |
| &variable_list); |
| |
| for (const VariableSP &var_sp : variable_list) { |
| if (var_sp && var_sp->LocationIsValidForAddress(*this)) { |
| s->Indent(); |
| s->Printf(" Variable: id = {0x%8.8" PRIx64 "}, name = \"%s\"", |
| var_sp->GetID(), var_sp->GetName().GetCString()); |
| Type *type = var_sp->GetType(); |
| if (type) |
| s->Printf(", type = \"%s\"", type->GetName().GetCString()); |
| else |
| s->PutCString(", type = <unknown>"); |
| s->PutCString(", location = "); |
| var_sp->DumpLocationForAddress(s, *this); |
| s->PutCString(", decl = "); |
| var_sp->GetDeclaration().DumpStopContext(s, false); |
| s->EOL(); |
| } |
| } |
| } |
| } |
| } else { |
| if (fallback_style != DumpStyleInvalid) |
| return Dump(s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| } |
| break; |
| |
| case DumpStyleResolvedPointerDescription: { |
| Process *process = exe_ctx.GetProcessPtr(); |
| if (process) { |
| addr_t load_addr = GetLoadAddress(target); |
| if (load_addr != LLDB_INVALID_ADDRESS) { |
| Status memory_error; |
| addr_t dereferenced_load_addr = |
| process->ReadPointerFromMemory(load_addr, memory_error); |
| if (dereferenced_load_addr != LLDB_INVALID_ADDRESS) { |
| Address dereferenced_addr; |
| if (dereferenced_addr.SetLoadAddress(dereferenced_load_addr, |
| target)) { |
| StreamString strm; |
| if (dereferenced_addr.Dump(&strm, exe_scope, |
| DumpStyleResolvedDescription, |
| DumpStyleInvalid, addr_size)) { |
| DumpAddress(s->AsRawOstream(), dereferenced_load_addr, addr_size, |
| " -> ", " "); |
| s->Write(strm.GetString().data(), strm.GetSize()); |
| return true; |
| } |
| } |
| } |
| } |
| } |
| if (fallback_style != DumpStyleInvalid) |
| return Dump(s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| } break; |
| } |
| |
| return true; |
| } |
| |
| bool Address::SectionWasDeleted() const { |
| if (GetSection()) |
| return false; |
| return SectionWasDeletedPrivate(); |
| } |
| |
| bool Address::SectionWasDeletedPrivate() const { |
| lldb::SectionWP empty_section_wp; |
| |
| // If either call to "std::weak_ptr::owner_before(...) value returns true, |
| // this indicates that m_section_wp once contained (possibly still does) a |
| // reference to a valid shared pointer. This helps us know if we had a valid |
| // reference to a section which is now invalid because the module it was in |
| // was unloaded/deleted, or if the address doesn't have a valid reference to |
| // a section. |
| return empty_section_wp.owner_before(m_section_wp) || |
| m_section_wp.owner_before(empty_section_wp); |
| } |
| |
| uint32_t |
| Address::CalculateSymbolContext(SymbolContext *sc, |
| SymbolContextItem resolve_scope) const { |
| sc->Clear(false); |
| // Absolute addresses don't have enough information to reconstruct even their |
| // target. |
| |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| ModuleSP module_sp(section_sp->GetModule()); |
| if (module_sp) { |
| sc->module_sp = module_sp; |
| if (sc->module_sp) |
| return sc->module_sp->ResolveSymbolContextForAddress( |
| *this, resolve_scope, *sc); |
| } |
| } |
| return 0; |
| } |
| |
| ModuleSP Address::CalculateSymbolContextModule() const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) |
| return section_sp->GetModule(); |
| return ModuleSP(); |
| } |
| |
| CompileUnit *Address::CalculateSymbolContextCompileUnit() const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| SymbolContext sc; |
| sc.module_sp = section_sp->GetModule(); |
| if (sc.module_sp) { |
| sc.module_sp->ResolveSymbolContextForAddress(*this, |
| eSymbolContextCompUnit, sc); |
| return sc.comp_unit; |
| } |
| } |
| return nullptr; |
| } |
| |
| Function *Address::CalculateSymbolContextFunction() const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| SymbolContext sc; |
| sc.module_sp = section_sp->GetModule(); |
| if (sc.module_sp) { |
| sc.module_sp->ResolveSymbolContextForAddress(*this, |
| eSymbolContextFunction, sc); |
| return sc.function; |
| } |
| } |
| return nullptr; |
| } |
| |
| Block *Address::CalculateSymbolContextBlock() const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| SymbolContext sc; |
| sc.module_sp = section_sp->GetModule(); |
| if (sc.module_sp) { |
| sc.module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextBlock, |
| sc); |
| return sc.block; |
| } |
| } |
| return nullptr; |
| } |
| |
| Symbol *Address::CalculateSymbolContextSymbol() const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| SymbolContext sc; |
| sc.module_sp = section_sp->GetModule(); |
| if (sc.module_sp) { |
| sc.module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextSymbol, |
| sc); |
| return sc.symbol; |
| } |
| } |
| return nullptr; |
| } |
| |
| bool Address::CalculateSymbolContextLineEntry(LineEntry &line_entry) const { |
| SectionSP section_sp(GetSection()); |
| if (section_sp) { |
| SymbolContext sc; |
| sc.module_sp = section_sp->GetModule(); |
| if (sc.module_sp) { |
| sc.module_sp->ResolveSymbolContextForAddress(*this, |
| eSymbolContextLineEntry, sc); |
| if (sc.line_entry.IsValid()) { |
| line_entry = sc.line_entry; |
| return true; |
| } |
| } |
| } |
| line_entry.Clear(); |
| return false; |
| } |
| |
| int Address::CompareFileAddress(const Address &a, const Address &b) { |
| addr_t a_file_addr = a.GetFileAddress(); |
| addr_t b_file_addr = b.GetFileAddress(); |
| if (a_file_addr < b_file_addr) |
| return -1; |
| if (a_file_addr > b_file_addr) |
| return +1; |
| return 0; |
| } |
| |
| int Address::CompareLoadAddress(const Address &a, const Address &b, |
| Target *target) { |
| assert(target != nullptr); |
| addr_t a_load_addr = a.GetLoadAddress(target); |
| addr_t b_load_addr = b.GetLoadAddress(target); |
| if (a_load_addr < b_load_addr) |
| return -1; |
| if (a_load_addr > b_load_addr) |
| return +1; |
| return 0; |
| } |
| |
| int Address::CompareModulePointerAndOffset(const Address &a, const Address &b) { |
| ModuleSP a_module_sp(a.GetModule()); |
| ModuleSP b_module_sp(b.GetModule()); |
| Module *a_module = a_module_sp.get(); |
| Module *b_module = b_module_sp.get(); |
| if (a_module < b_module) |
| return -1; |
| if (a_module > b_module) |
| return +1; |
| // Modules are the same, just compare the file address since they should be |
| // unique |
| addr_t a_file_addr = a.GetFileAddress(); |
| addr_t b_file_addr = b.GetFileAddress(); |
| if (a_file_addr < b_file_addr) |
| return -1; |
| if (a_file_addr > b_file_addr) |
| return +1; |
| return 0; |
| } |
| |
| size_t Address::MemorySize() const { |
| // Noting special for the memory size of a single Address object, it is just |
| // the size of itself. |
| return sizeof(Address); |
| } |
| |
| // NOTE: Be careful using this operator. It can correctly compare two |
| // addresses from the same Module correctly. It can't compare two addresses |
| // from different modules in any meaningful way, but it will compare the module |
| // pointers. |
| // |
| // To sum things up: |
| // - works great for addresses within the same module - it works for addresses |
| // across multiple modules, but don't expect the |
| // address results to make much sense |
| // |
| // This basically lets Address objects be used in ordered collection classes. |
| |
| bool lldb_private::operator<(const Address &lhs, const Address &rhs) { |
| ModuleSP lhs_module_sp(lhs.GetModule()); |
| ModuleSP rhs_module_sp(rhs.GetModule()); |
| Module *lhs_module = lhs_module_sp.get(); |
| Module *rhs_module = rhs_module_sp.get(); |
| if (lhs_module == rhs_module) { |
| // Addresses are in the same module, just compare the file addresses |
| return lhs.GetFileAddress() < rhs.GetFileAddress(); |
| } else { |
| // The addresses are from different modules, just use the module pointer |
| // value to get consistent ordering |
| return lhs_module < rhs_module; |
| } |
| } |
| |
| bool lldb_private::operator>(const Address &lhs, const Address &rhs) { |
| ModuleSP lhs_module_sp(lhs.GetModule()); |
| ModuleSP rhs_module_sp(rhs.GetModule()); |
| Module *lhs_module = lhs_module_sp.get(); |
| Module *rhs_module = rhs_module_sp.get(); |
| if (lhs_module == rhs_module) { |
| // Addresses are in the same module, just compare the file addresses |
| return lhs.GetFileAddress() > rhs.GetFileAddress(); |
| } else { |
| // The addresses are from different modules, just use the module pointer |
| // value to get consistent ordering |
| return lhs_module > rhs_module; |
| } |
| } |
| |
| // The operator == checks for exact equality only (same section, same offset) |
| bool lldb_private::operator==(const Address &a, const Address &rhs) { |
| return a.GetOffset() == rhs.GetOffset() && a.GetSection() == rhs.GetSection(); |
| } |
| |
| // The operator != checks for exact inequality only (differing section, or |
| // different offset) |
| bool lldb_private::operator!=(const Address &a, const Address &rhs) { |
| return a.GetOffset() != rhs.GetOffset() || a.GetSection() != rhs.GetSection(); |
| } |
| |
| AddressClass Address::GetAddressClass() const { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) { |
| ObjectFile *obj_file = module_sp->GetObjectFile(); |
| if (obj_file) { |
| // Give the symbol file a chance to add to the unified section list |
| // and to the symtab. |
| module_sp->GetSymtab(); |
| return obj_file->GetAddressClass(GetFileAddress()); |
| } |
| } |
| return AddressClass::eUnknown; |
| } |
| |
| bool Address::SetLoadAddress(lldb::addr_t load_addr, Target *target, |
| bool allow_section_end) { |
| if (target && target->GetSectionLoadList().ResolveLoadAddress( |
| load_addr, *this, allow_section_end)) |
| return true; |
| m_section_wp.reset(); |
| m_offset = load_addr; |
| return false; |
| } |
