Error
ClangExpressionParser::DisassembleFunction (Stream &stream, ExecutionContext &exe_ctx, RecordingMemoryManager *jit_memory_manager)
{
lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
const char *name = m_expr.FunctionName();
Error ret;
ret.Clear();
lldb::addr_t func_local_addr = LLDB_INVALID_ADDRESS;
lldb::addr_t func_remote_addr = LLDB_INVALID_ADDRESS;
std::vector<JittedFunction>::iterator pos, end = m_jitted_functions.end();
for (pos = m_jitted_functions.begin(); pos < end; pos++)
{
if (strstr(pos->m_name.c_str(), name))
{
func_local_addr = pos->m_local_addr;
func_remote_addr = pos->m_remote_addr;
}
}
if (func_local_addr == LLDB_INVALID_ADDRESS)
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Couldn't find function %s for disassembly", name);
return ret;
}
if(log)
log->Printf("Found function, has local address 0x%llx and remote address 0x%llx", (uint64_t)func_local_addr, (uint64_t)func_remote_addr);
std::pair <lldb::addr_t, lldb::addr_t> func_range;
func_range = jit_memory_manager->GetRemoteRangeForLocal(func_local_addr);
if (func_range.first == 0 && func_range.second == 0)
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Couldn't find code range for function %s", name);
return ret;
}
if(log)
log->Printf("Function's code range is [0x%llx-0x%llx]", func_range.first, func_range.second);
if (!exe_ctx.target)
{
ret.SetErrorToGenericError();
ret.SetErrorString("Couldn't find the target");
}
lldb::DataBufferSP buffer_sp(new DataBufferHeap(func_range.second - func_remote_addr, 0));
Error err;
exe_ctx.process->ReadMemory(func_remote_addr, buffer_sp->GetBytes(), buffer_sp->GetByteSize(), err);
if (!err.Success())
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Couldn't read from process: %s", err.AsCString("unknown error"));
return ret;
}
ArchSpec arch(exe_ctx.target->GetArchitecture());
Disassembler *disassembler = Disassembler::FindPlugin(arch);
if (disassembler == NULL)
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Unable to find disassembler plug-in for %s architecture.", arch.GetArchitectureName());
return ret;
}
if (!exe_ctx.process)
{
ret.SetErrorToGenericError();
ret.SetErrorString("Couldn't find the process");
return ret;
}
DataExtractor extractor(buffer_sp,
exe_ctx.process->GetByteOrder(),
exe_ctx.target->GetArchitecture().GetAddressByteSize());
if (log)
{
log->Printf("Function data has contents:");
extractor.PutToLog (log.get(),
0,
extractor.GetByteSize(),
func_remote_addr,
16,
DataExtractor::TypeUInt8);
}
disassembler->DecodeInstructions (Address (NULL, func_remote_addr), extractor, 0, UINT32_MAX);
InstructionList &instruction_list = disassembler->GetInstructionList();
uint32_t bytes_offset = 0;
for (uint32_t instruction_index = 0, num_instructions = instruction_list.GetSize();
instruction_index < num_instructions;
++instruction_index)
{
Instruction *instruction = instruction_list.GetInstructionAtIndex(instruction_index).get();
instruction->Dump (&stream,
true,
&extractor,
bytes_offset,
&exe_ctx,
true);
stream.PutChar('\n');
bytes_offset += instruction->GetByteSize();
}
return ret;
}
void ThreadPlanAssemblyTracer::Log() {
Stream *stream = GetLogStream();
if (!stream)
return;
RegisterContext *reg_ctx = m_thread.GetRegisterContext().get();
lldb::addr_t pc = reg_ctx->GetPC();
ProcessSP process_sp(m_thread.GetProcess());
Address pc_addr;
bool addr_valid = false;
uint8_t buffer[16] = {0}; // Must be big enough for any single instruction
addr_valid = process_sp->GetTarget().GetSectionLoadList().ResolveLoadAddress(
pc, pc_addr);
pc_addr.Dump(stream, &m_thread, Address::DumpStyleResolvedDescription,
Address::DumpStyleModuleWithFileAddress);
stream->PutCString(" ");
Disassembler *disassembler = GetDisassembler();
if (disassembler) {
Status err;
process_sp->ReadMemory(pc, buffer, sizeof(buffer), err);
if (err.Success()) {
DataExtractor extractor(buffer, sizeof(buffer),
process_sp->GetByteOrder(),
process_sp->GetAddressByteSize());
bool data_from_file = false;
if (addr_valid)
disassembler->DecodeInstructions(pc_addr, extractor, 0, 1, false,
data_from_file);
else
disassembler->DecodeInstructions(Address(pc), extractor, 0, 1, false,
data_from_file);
InstructionList &instruction_list = disassembler->GetInstructionList();
const uint32_t max_opcode_byte_size =
instruction_list.GetMaxOpcocdeByteSize();
if (instruction_list.GetSize()) {
const bool show_bytes = true;
const bool show_address = true;
Instruction *instruction =
instruction_list.GetInstructionAtIndex(0).get();
const FormatEntity::Entry *disassemble_format =
m_thread.GetProcess()
->GetTarget()
.GetDebugger()
.GetDisassemblyFormat();
instruction->Dump(stream, max_opcode_byte_size, show_address,
show_bytes, nullptr, nullptr, nullptr,
disassemble_format, 0);
}
}
}
const ABI *abi = process_sp->GetABI().get();
TypeFromUser intptr_type = GetIntPointerType();
if (abi && intptr_type.IsValid()) {
ValueList value_list;
const int num_args = 1;
for (int arg_index = 0; arg_index < num_args; ++arg_index) {
Value value;
value.SetValueType(Value::eValueTypeScalar);
// value.SetContext (Value::eContextTypeClangType,
// intptr_type.GetOpaqueQualType());
value.SetCompilerType(intptr_type);
value_list.PushValue(value);
}
if (abi->GetArgumentValues(m_thread, value_list)) {
for (int arg_index = 0; arg_index < num_args; ++arg_index) {
stream->Printf(
"\n\targ[%d]=%llx", arg_index,
value_list.GetValueAtIndex(arg_index)->GetScalar().ULongLong());
if (arg_index + 1 < num_args)
stream->PutCString(", ");
}
}
}
RegisterValue reg_value;
for (uint32_t reg_num = 0, num_registers = reg_ctx->GetRegisterCount();
reg_num < num_registers; ++reg_num) {
const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoAtIndex(reg_num);
if (reg_ctx->ReadRegister(reg_info, reg_value)) {
assert(reg_num < m_register_values.size());
if (m_register_values[reg_num].GetType() == RegisterValue::eTypeInvalid ||
reg_value != m_register_values[reg_num]) {
if (reg_value.GetType() != RegisterValue::eTypeInvalid) {
stream->PutCString("\n\t");
reg_value.Dump(stream, reg_info, true, false, eFormatDefault);
}
}
m_register_values[reg_num] = reg_value;
}
}
stream->EOL();
stream->Flush();
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const ExecutionContext &exe_ctx,
const AddressRange &disasm_range,
uint32_t num_mixed_context_lines,
bool show_bytes,
Stream &strm
)
{
if (disasm_range.GetByteSize())
{
Disassembler *disassembler = Disassembler::FindPlugin(arch);
if (disassembler)
{
AddressRange range(disasm_range);
Process *process = exe_ctx.process;
// If we weren't passed in a section offset address range,
// try and resolve it to something
if (range.GetBaseAddress().IsSectionOffset() == false)
{
if (process && process->IsAlive())
{
process->ResolveLoadAddress (range.GetBaseAddress().GetOffset(), range.GetBaseAddress());
}
else if (exe_ctx.target)
{
exe_ctx.target->GetImages().ResolveFileAddress (range.GetBaseAddress().GetOffset(), range.GetBaseAddress());
}
}
DataExtractor data;
size_t bytes_disassembled = disassembler->ParseInstructions (&exe_ctx, range, data);
if (bytes_disassembled == 0)
{
return false;
}
else
{
// We got some things disassembled...
size_t num_instructions = disassembler->GetInstructionList().GetSize();
uint32_t offset = 0;
SymbolContext sc;
SymbolContext prev_sc;
AddressRange sc_range;
if (num_mixed_context_lines)
strm.IndentMore ();
Address addr(range.GetBaseAddress());
// We extract the section to make sure we don't transition out
// of the current section when disassembling
const Section *addr_section = addr.GetSection();
Module *range_module = range.GetBaseAddress().GetModule();
for (size_t i=0; i<num_instructions; ++i)
{
Disassembler::Instruction *inst = disassembler->GetInstructionList().GetInstructionAtIndex (i);
if (inst)
{
addr_t file_addr = addr.GetFileAddress();
if (addr_section == NULL || addr_section->ContainsFileAddress (file_addr) == false)
{
if (range_module)
range_module->ResolveFileAddress (file_addr, addr);
else if (exe_ctx.target)
exe_ctx.target->GetImages().ResolveFileAddress (file_addr, addr);
addr_section = addr.GetSection();
}
prev_sc = sc;
if (addr_section)
{
Module *module = addr_section->GetModule();
uint32_t resolved_mask = module->ResolveSymbolContextForAddress(addr, eSymbolContextEverything, sc);
if (resolved_mask)
{
if (prev_sc.function != sc.function || prev_sc.symbol != sc.symbol)
{
if (prev_sc.function || prev_sc.symbol)
strm.EOL();
strm << sc.module_sp->GetFileSpec().GetFilename();
if (sc.function)
strm << '`' << sc.function->GetMangled().GetName();
else if (sc.symbol)
strm << '`' << sc.symbol->GetMangled().GetName();
strm << ":\n";
}
if (num_mixed_context_lines && !sc_range.ContainsFileAddress (addr))
{
sc.GetAddressRange (eSymbolContextEverything, sc_range);
if (sc != prev_sc)
{
if (offset != 0)
strm.EOL();
sc.DumpStopContext(&strm, process, addr);
if (sc.comp_unit && sc.line_entry.IsValid())
{
debugger.GetSourceManager().DisplaySourceLinesWithLineNumbers (sc.line_entry.file,
sc.line_entry.line,
num_mixed_context_lines,
num_mixed_context_lines,
num_mixed_context_lines ? "->" : "",
&strm);
}
}
}
}
else
{
sc.Clear();
}
}
if (num_mixed_context_lines)
strm.IndentMore ();
strm.Indent();
size_t inst_byte_size = inst->GetByteSize();
inst->Dump(&strm, &addr, show_bytes ? &data : NULL, offset, exe_ctx, show_bytes);
strm.EOL();
offset += inst_byte_size;
addr.SetOffset (addr.GetOffset() + inst_byte_size);
if (num_mixed_context_lines)
strm.IndentLess ();
}
else
{
break;
}
}
if (num_mixed_context_lines)
strm.IndentLess ();
}
}
return true;
}
return false;
}
