| //===-- Address.cpp ---------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Core/Address.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/ExecutionContext.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/Target.h" |
| |
| #include "llvm/ADT/Triple.h" |
| |
| 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 == NULL) |
| return 0; |
| |
| Target *target = exe_scope->CalculateTarget(); |
| if (target) |
| { |
| Error error; |
| bool prefer_file_cache = false; |
| return target->ReadMemory (address, prefer_file_cache, dst, dst_len, error); |
| } |
| 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 == NULL) |
| return false; |
| |
| Target *target = exe_scope->CalculateTarget(); |
| if (target) |
| { |
| byte_order = target->GetArchitecture().GetByteOrder(); |
| addr_size = target->GetArchitecture().GetAddressByteSize(); |
| } |
| |
| if (byte_order == eByteOrderInvalid || addr_size == 0) |
| { |
| Module *module = address.GetModule(); |
| if (module) |
| { |
| byte_order = module->GetArchitecture().GetByteOrder(); |
| addr_size = module->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 == NULL || byte_size > sizeof(uint64_t)) |
| { |
| success = false; |
| return 0; |
| } |
| uint64_t buf; |
| |
| 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); |
| uint32_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 == NULL) |
| 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 |
| if (exe_ctx.target && !exe_ctx.target->GetSectionLoadList().IsEmpty()) |
| { |
| if (exe_ctx.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 |
| Module *module = address.GetModule(); |
| assert (module); |
| if (module->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.SetSection(NULL); |
| deref_so_addr.SetOffset(deref_addr); |
| return true; |
| } |
| return false; |
| } |
| |
| static bool |
| DumpUInt (ExecutionContextScope *exe_scope, const Address &address, uint32_t byte_size, Stream* strm) |
| { |
| if (exe_scope == NULL || byte_size == 0) |
| return 0; |
| 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); |
| |
| data.Dump (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 == NULL) |
| 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), lldb::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; |
| |
| data.Dump (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 (addr_t address, const SectionList * sections) : |
| m_section (NULL), |
| m_offset (LLDB_INVALID_ADDRESS) |
| { |
| ResolveAddressUsingFileSections(address, sections); |
| } |
| |
| const Address& |
| Address::operator= (const Address& rhs) |
| { |
| if (this != &rhs) |
| { |
| m_section = rhs.m_section; |
| m_offset = rhs.m_offset; |
| } |
| return *this; |
| } |
| |
| bool |
| Address::ResolveAddressUsingFileSections (addr_t addr, const SectionList *sections) |
| { |
| if (sections) |
| m_section = sections->FindSectionContainingFileAddress(addr).get(); |
| else |
| m_section = NULL; |
| |
| if (m_section != NULL) |
| { |
| assert( m_section->ContainsFileAddress(addr) ); |
| m_offset = addr - m_section->GetFileAddress(); |
| return true; // Successfully transformed addr into a section offset address |
| } |
| |
| m_offset = addr; |
| return false; // Failed to resolve this address to a section offset value |
| } |
| |
| Module * |
| Address::GetModule () const |
| { |
| if (m_section) |
| return m_section->GetModule(); |
| return NULL; |
| } |
| |
| addr_t |
| Address::GetFileAddress () const |
| { |
| if (m_section != NULL) |
| { |
| addr_t sect_file_addr = m_section->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; |
| } |
| // 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 |
| { |
| if (m_section == NULL) |
| { |
| // No section, we just return the offset since it is the value in this case |
| return m_offset; |
| } |
| |
| if (target) |
| { |
| addr_t sect_load_addr = m_section->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; |
| } |
| } |
| // The section isn't resolved or no process was supplied so we can't |
| // return a valid file address. |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| addr_t |
| Address::GetCallableLoadAddress (Target *target) const |
| { |
| addr_t code_addr = GetLoadAddress (target); |
| |
| // Make sure we have section, otherwise the call to GetAddressClass() will |
| // fail because it uses the section to get to the module. |
| if (m_section && code_addr != LLDB_INVALID_ADDRESS) |
| { |
| switch (target->GetArchitecture().GetMachine()) |
| { |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| // Check if bit zero it no set? |
| if ((code_addr & 1ull) == 0) |
| { |
| // Bit zero isn't set, check if the address is a multiple of 2? |
| if (code_addr & 2ull) |
| { |
| // The address is a multiple of 2 so it must be thumb, set bit zero |
| code_addr |= 1ull; |
| } |
| else if (GetAddressClass() == eAddressClassCodeAlternateISA) |
| { |
| // We checked the address and the address claims to be the alternate ISA |
| // which means thumb, so set bit zero. |
| code_addr |= 1ull; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return code_addr; |
| } |
| |
| bool |
| Address::SetCallableLoadAddress (lldb::addr_t load_addr, Target *target) |
| { |
| if (SetLoadAddress (load_addr, target)) |
| { |
| switch (target->GetArchitecture().GetMachine()) |
| { |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| // Check if bit zero it no set? |
| if ((m_offset & 1ull) == 0) |
| { |
| // Bit zero isn't set, check if the address is a multiple of 2? |
| if (m_offset & 2ull) |
| { |
| // The address is a multiple of 2 so it must be thumb, set bit zero |
| m_offset |= 1ull; |
| } |
| else if (GetAddressClass() == eAddressClassCodeAlternateISA) |
| { |
| // We checked the address and the address claims to be the alternate ISA |
| // which means thumb, so set bit zero. |
| m_offset |= 1ull; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| |
| |
| addr_t |
| Address::GetOpcodeLoadAddress (Target *target) const |
| { |
| addr_t code_addr = GetLoadAddress (target); |
| |
| if (code_addr != LLDB_INVALID_ADDRESS) |
| { |
| switch (target->GetArchitecture().GetMachine()) |
| { |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| // Strip bit zero to make sure we end up on an opcode boundary |
| return code_addr & ~(1ull); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return code_addr; |
| } |
| |
| bool |
| Address::SetOpcodeLoadAddress (lldb::addr_t load_addr, Target *target) |
| { |
| if (SetLoadAddress (load_addr, target)) |
| { |
| switch (target->GetArchitecture().GetMachine()) |
| { |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| // Make sure bit zero is clear |
| m_offset &= ~(1ull); |
| break; |
| |
| default: |
| break; |
| } |
| 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 NULL, only load address is going to work. |
| if (m_section == NULL) |
| style = DumpStyleLoadAddress; |
| |
| Target *target = NULL; |
| Process *process = NULL; |
| if (exe_scope) |
| { |
| target = exe_scope->CalculateTarget(); |
| process = exe_scope->CalculateProcess(); |
| } |
| // 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 (process) |
| addr_size = target->GetArchitecture().GetAddressByteSize (); |
| else |
| addr_size = sizeof(addr_t); |
| } |
| |
| Address so_addr; |
| switch (style) |
| { |
| case DumpStyleInvalid: |
| return false; |
| |
| case DumpStyleSectionNameOffset: |
| if (m_section != NULL) |
| { |
| m_section->DumpName(s); |
| s->Printf (" + %llu", m_offset); |
| } |
| else |
| { |
| s->Address(m_offset, addr_size); |
| } |
| break; |
| |
| case DumpStyleSectionPointerOffset: |
| s->Printf("(Section *)%.*p + ", (int)sizeof(void*) * 2, m_section); |
| s->Address(m_offset, addr_size); |
| break; |
| |
| case DumpStyleModuleWithFileAddress: |
| if (m_section) |
| s->Printf("%s[", m_section->GetModule()->GetFileSpec().GetFilename().AsCString()); |
| // Fall through |
| 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; |
| } |
| s->Address (file_addr, addr_size); |
| if (style == DumpStyleModuleWithFileAddress && m_section) |
| s->PutChar(']'); |
| } |
| break; |
| |
| case DumpStyleLoadAddress: |
| { |
| addr_t load_addr = GetLoadAddress (target); |
| if (load_addr == LLDB_INVALID_ADDRESS) |
| { |
| if (fallback_style != DumpStyleInvalid) |
| return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| } |
| s->Address (load_addr, addr_size); |
| } |
| break; |
| |
| case DumpStyleResolvedDescription: |
| case DumpStyleResolvedDescriptionNoModule: |
| if (IsSectionOffset()) |
| { |
| AddressType addr_type = eAddressTypeLoad; |
| addr_t addr = GetLoadAddress (target); |
| if (addr == LLDB_INVALID_ADDRESS) |
| { |
| addr = GetFileAddress(); |
| addr_type = eAddressTypeFile; |
| } |
| |
| uint32_t pointer_size = 4; |
| Module *module = GetModule(); |
| if (target) |
| pointer_size = target->GetArchitecture().GetAddressByteSize(); |
| else if (module) |
| pointer_size = module->GetArchitecture().GetAddressByteSize(); |
| |
| bool showed_info = false; |
| const Section *section = GetSection(); |
| if (section) |
| { |
| SectionType sect_type = section->GetType(); |
| switch (sect_type) |
| { |
| case eSectionTypeData: |
| if (module) |
| { |
| ObjectFile *objfile = module->GetObjectFile(); |
| if (objfile) |
| { |
| Symtab *symtab = objfile->GetSymtab(); |
| if (symtab) |
| { |
| 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->GetAddressRangePtr()->GetBaseAddress().GetFileAddress(); |
| if (delta) |
| s->Printf(" + %llu", 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 || func_sc.symbol) |
| { |
| 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); |
| 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 || pointer_sc.symbol) |
| { |
| s->PutCString(": "); |
| pointer_sc.DumpStopContext(s, exe_scope, so_addr, true, false, false); |
| } |
| } |
| } |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| if (!showed_info) |
| { |
| if (module) |
| { |
| SymbolContext sc; |
| module->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; |
| if (sc.function == NULL && sc.symbol != NULL) |
| { |
| // If we have just a symbol make sure it is in the right section |
| if (sc.symbol->GetAddressRangePtr()) |
| { |
| if (sc.symbol->GetAddressRangePtr()->GetBaseAddress().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); |
| } |
| 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()) |
| { |
| Module *module = GetModule(); |
| if (module) |
| { |
| SymbolContext sc; |
| module->ResolveSymbolContextForAddress(*this, eSymbolContextEverything, 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->GetAddressRangePtr() && sc.symbol->GetAddressRangePtr()->GetBaseAddress().GetSection() != GetSection()) |
| sc.symbol = NULL; |
| } |
| sc.GetDescription(s, eDescriptionLevelBrief, target); |
| } |
| } |
| if (fallback_style != DumpStyleInvalid) |
| return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); |
| return false; |
| break; |
| } |
| |
| return true; |
| } |
| |
| void |
| Address::CalculateSymbolContext (SymbolContext *sc) |
| { |
| sc->Clear(); |
| // Absolute addresses don't have enough information to reconstruct even their target. |
| if (m_section == NULL) |
| return; |
| |
| if (m_section->GetModule()) |
| { |
| sc->module_sp = m_section->GetModule()->GetSP(); |
| if (sc->module_sp) |
| sc->module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextEverything, *sc); |
| } |
| } |
| |
| 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 != NULL); |
| 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) |
| { |
| Module *a_module = a.GetModule (); |
| Module *b_module = b.GetModule (); |
| 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) |
| { |
| Module *lhs_module = lhs.GetModule(); |
| Module *rhs_module = rhs.GetModule(); |
| 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) |
| { |
| Module *lhs_module = lhs.GetModule(); |
| Module *rhs_module = rhs.GetModule(); |
| 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.GetSection() == rhs.GetSection() && |
| a.GetOffset() == rhs.GetOffset(); |
| } |
| // The operator != checks for exact inequality only (differing section, or |
| // different offset) |
| bool |
| lldb_private::operator!= (const Address& a, const Address& rhs) |
| { |
| return a.GetSection() != rhs.GetSection() || |
| a.GetOffset() != rhs.GetOffset(); |
| } |
| |
| bool |
| Address::IsLinkedAddress () const |
| { |
| return m_section && m_section->GetLinkedSection(); |
| } |
| |
| |
| void |
| Address::ResolveLinkedAddress () |
| { |
| if (m_section) |
| { |
| const Section *linked_section = m_section->GetLinkedSection(); |
| if (linked_section) |
| { |
| m_offset += m_section->GetLinkedOffset(); |
| m_section = linked_section; |
| } |
| } |
| } |
| |
| AddressClass |
| Address::GetAddressClass () const |
| { |
| Module *module = GetModule(); |
| if (module) |
| { |
| ObjectFile *obj_file = module->GetObjectFile(); |
| if (obj_file) |
| return obj_file->GetAddressClass (GetFileAddress()); |
| } |
| return eAddressClassUnknown; |
| } |
| |
| bool |
| Address::SetLoadAddress (lldb::addr_t load_addr, Target *target) |
| { |
| if (target && target->GetSectionLoadList().ResolveLoadAddress(load_addr, *this)) |
| return true; |
| m_section = NULL; |
| m_offset = load_addr; |
| return false; |
| } |
| |