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llvm-project/lldb/source/Core/Disassembler.cpp
Greg Clayton 762f7135e2 Don't put modules for .o files into the global shared module list. We 
used to do this because we needed to find the shared pointer for a .o
file when the .o file's module was needed in a SymbolContext since the
module in a symbol context was a shared pointer. Now that we are using
intrusive pointers we don't have this limitation anymore since any
instrusive shared pointer can be made from a pointer to an object
all on its own.

Also switched over to having the Module and SymbolVendor use shared 
pointers to their object files as had a leak on MacOSX when the 
SymbolVendor's object file wasn't the same as the Module's (debug info
in a stand along file (dSYM file)). Now everything will correctly clean
itself up when the module goes away after an executable gets rebuilt.

Now we correctly get rid of .o files that are used with the DWARF with 
debug map executables on subsequent runs since the only shared pointer
to the object files in from the DWARF symbol file debug map parser, and
when the module gets replaced, it destroys to old one along with all .o 
files. 

Also added a small optimization when using BSD archives where we will
remove old BSD containers from the shared list when they are outdated.

llvm-svn: 140002
2011-09-18 18:59:15 +00:00

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//===-- Disassembler.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/Disassembler.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/DataExtractor.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/EmulateInstruction.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/RegularExpression.h"
#include "lldb/Core/Timer.h"
#include "lldb/Interpreter/NamedOptionValue.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
#define DEFAULT_DISASM_BYTE_SIZE 32
using namespace lldb;
using namespace lldb_private;
Disassembler*
Disassembler::FindPlugin (const ArchSpec &arch, const char *plugin_name)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"Disassembler::FindPlugin (arch = %s, plugin_name = %s)",
arch.GetArchitectureName(),
plugin_name);
std::auto_ptr<Disassembler> disassembler_ap;
DisassemblerCreateInstance create_callback = NULL;
if (plugin_name)
{
create_callback = PluginManager::GetDisassemblerCreateCallbackForPluginName (plugin_name);
if (create_callback)
{
disassembler_ap.reset (create_callback(arch));
if (disassembler_ap.get())
return disassembler_ap.release();
}
}
else
{
for (uint32_t idx = 0; (create_callback = PluginManager::GetDisassemblerCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
disassembler_ap.reset (create_callback(arch));
if (disassembler_ap.get())
return disassembler_ap.release();
}
}
return NULL;
}
static void
ResolveAddress (const ExecutionContext &exe_ctx,
const Address &addr,
Address &resolved_addr)
{
if (!addr.IsSectionOffset())
{
// If we weren't passed in a section offset address range,
// try and resolve it to something
if (exe_ctx.target)
{
if (exe_ctx.target->GetSectionLoadList().IsEmpty())
{
exe_ctx.target->GetImages().ResolveFileAddress (addr.GetOffset(), resolved_addr);
}
else
{
exe_ctx.target->GetSectionLoadList().ResolveLoadAddress (addr.GetOffset(), resolved_addr);
}
// We weren't able to resolve the address, just treat it as a
// raw address
if (resolved_addr.IsValid())
return;
}
}
resolved_addr = addr;
}
size_t
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const char *plugin_name,
const ExecutionContext &exe_ctx,
SymbolContextList &sc_list,
uint32_t num_instructions,
uint32_t num_mixed_context_lines,
uint32_t options,
Stream &strm
)
{
size_t success_count = 0;
const size_t count = sc_list.GetSize();
SymbolContext sc;
AddressRange range;
const uint32_t scope = eSymbolContextBlock | eSymbolContextFunction | eSymbolContextSymbol;
const bool use_inline_block_range = true;
for (size_t i=0; i<count; ++i)
{
if (sc_list.GetContextAtIndex(i, sc) == false)
break;
for (uint32_t range_idx = 0; sc.GetAddressRange(scope, range_idx, use_inline_block_range, range); ++range_idx)
{
if (Disassemble (debugger,
arch,
plugin_name,
exe_ctx,
range,
num_instructions,
num_mixed_context_lines,
options,
strm))
{
++success_count;
strm.EOL();
}
}
}
return success_count;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const char *plugin_name,
const ExecutionContext &exe_ctx,
const ConstString &name,
Module *module,
uint32_t num_instructions,
uint32_t num_mixed_context_lines,
uint32_t options,
Stream &strm
)
{
SymbolContextList sc_list;
if (name)
{
const bool include_symbols = true;
if (module)
{
module->FindFunctions (name,
eFunctionNameTypeBase |
eFunctionNameTypeFull |
eFunctionNameTypeMethod |
eFunctionNameTypeSelector,
include_symbols,
true,
sc_list);
}
else if (exe_ctx.target)
{
exe_ctx.target->GetImages().FindFunctions (name,
eFunctionNameTypeBase |
eFunctionNameTypeFull |
eFunctionNameTypeMethod |
eFunctionNameTypeSelector,
include_symbols,
false,
sc_list);
}
}
if (sc_list.GetSize ())
{
return Disassemble (debugger,
arch,
plugin_name,
exe_ctx,
sc_list,
num_instructions,
num_mixed_context_lines,
options,
strm);
}
return false;
}
lldb::DisassemblerSP
Disassembler::DisassembleRange
(
const ArchSpec &arch,
const char *plugin_name,
const ExecutionContext &exe_ctx,
const AddressRange &range
)
{
lldb::DisassemblerSP disasm_sp;
if (range.GetByteSize() > 0 && range.GetBaseAddress().IsValid())
{
disasm_sp.reset (Disassembler::FindPlugin(arch, plugin_name));
if (disasm_sp)
{
size_t bytes_disassembled = disasm_sp->ParseInstructions (&exe_ctx, range);
if (bytes_disassembled == 0)
disasm_sp.reset();
}
}
return disasm_sp;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const char *plugin_name,
const ExecutionContext &exe_ctx,
const AddressRange &disasm_range,
uint32_t num_instructions,
uint32_t num_mixed_context_lines,
uint32_t options,
Stream &strm
)
{
if (disasm_range.GetByteSize())
{
std::auto_ptr<Disassembler> disasm_ap (Disassembler::FindPlugin(arch, plugin_name));
if (disasm_ap.get())
{
AddressRange range;
ResolveAddress (exe_ctx, disasm_range.GetBaseAddress(), range.GetBaseAddress());
range.SetByteSize (disasm_range.GetByteSize());
size_t bytes_disassembled = disasm_ap->ParseInstructions (&exe_ctx, range);
if (bytes_disassembled == 0)
return false;
return PrintInstructions (disasm_ap.get(),
debugger,
arch,
exe_ctx,
num_instructions,
num_mixed_context_lines,
options,
strm);
}
}
return false;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const char *plugin_name,
const ExecutionContext &exe_ctx,
const Address &start_address,
uint32_t num_instructions,
uint32_t num_mixed_context_lines,
uint32_t options,
Stream &strm
)
{
if (num_instructions > 0)
{
std::auto_ptr<Disassembler> disasm_ap (Disassembler::FindPlugin(arch, plugin_name));
if (disasm_ap.get())
{
Address addr;
ResolveAddress (exe_ctx, start_address, addr);
size_t bytes_disassembled = disasm_ap->ParseInstructions (&exe_ctx, addr, num_instructions);
if (bytes_disassembled == 0)
return false;
return PrintInstructions (disasm_ap.get(),
debugger,
arch,
exe_ctx,
num_instructions,
num_mixed_context_lines,
options,
strm);
}
}
return false;
}
bool
Disassembler::PrintInstructions
(
Disassembler *disasm_ptr,
Debugger &debugger,
const ArchSpec &arch,
const ExecutionContext &exe_ctx,
uint32_t num_instructions,
uint32_t num_mixed_context_lines,
uint32_t options,
Stream &strm
)
{
// We got some things disassembled...
size_t num_instructions_found = disasm_ptr->GetInstructionList().GetSize();
if (num_instructions > 0 && num_instructions < num_instructions_found)
num_instructions_found = num_instructions;
const uint32_t max_opcode_byte_size = disasm_ptr->GetInstructionList().GetMaxOpcocdeByteSize ();
uint32_t offset = 0;
SymbolContext sc;
SymbolContext prev_sc;
AddressRange sc_range;
const Address *pc_addr_ptr = NULL;
ExecutionContextScope *exe_scope = exe_ctx.GetBestExecutionContextScope();
if (exe_ctx.frame)
pc_addr_ptr = &exe_ctx.frame->GetFrameCodeAddress();
const uint32_t scope = eSymbolContextLineEntry | eSymbolContextFunction | eSymbolContextSymbol;
const bool use_inline_block_range = false;
for (size_t i=0; i<num_instructions_found; ++i)
{
Instruction *inst = disasm_ptr->GetInstructionList().GetInstructionAtIndex (i).get();
if (inst)
{
const Address &addr = inst->GetAddress();
const bool inst_is_at_pc = pc_addr_ptr && addr == *pc_addr_ptr;
prev_sc = sc;
Module *module = addr.GetModule();
if (module)
{
uint32_t resolved_mask = module->ResolveSymbolContextForAddress(addr, eSymbolContextEverything, sc);
if (resolved_mask)
{
if (num_mixed_context_lines)
{
if (!sc_range.ContainsFileAddress (addr))
{
sc.GetAddressRange (scope, 0, use_inline_block_range, sc_range);
if (sc != prev_sc)
{
if (offset != 0)
strm.EOL();
sc.DumpStopContext(&strm, exe_ctx.process, addr, false, true, false);
strm.EOL();
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,
((inst_is_at_pc && (options & eOptionMarkPCSourceLine)) ? "->" : ""),
&strm);
}
}
}
}
else if (!(prev_sc.function == sc.function || prev_sc.symbol == sc.symbol))
{
if (prev_sc.function || prev_sc.symbol)
strm.EOL();
bool show_fullpaths = false;
bool show_module = true;
bool show_inlined_frames = true;
sc.DumpStopContext (&strm,
exe_scope,
addr,
show_fullpaths,
show_module,
show_inlined_frames);
strm << ":\n";
}
}
else
{
sc.Clear();
}
}
if ((options & eOptionMarkPCAddress) && pc_addr_ptr)
{
strm.PutCString(inst_is_at_pc ? "-> " : " ");
}
const bool show_bytes = (options & eOptionShowBytes) != 0;
const bool raw = (options & eOptionRawOuput) != 0;
inst->Dump(&strm, max_opcode_byte_size, true, show_bytes, &exe_ctx, raw);
strm.EOL();
}
else
{
break;
}
}
return true;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const char *plugin_name,
const ExecutionContext &exe_ctx,
uint32_t num_instructions,
uint32_t num_mixed_context_lines,
uint32_t options,
Stream &strm
)
{
AddressRange range;
if (exe_ctx.frame)
{
SymbolContext sc(exe_ctx.frame->GetSymbolContext(eSymbolContextFunction | eSymbolContextSymbol));
if (sc.function)
{
range = sc.function->GetAddressRange();
}
else if (sc.symbol && sc.symbol->GetAddressRangePtr())
{
range = *sc.symbol->GetAddressRangePtr();
}
else
{
range.GetBaseAddress() = exe_ctx.frame->GetFrameCodeAddress();
}
if (range.GetBaseAddress().IsValid() && range.GetByteSize() == 0)
range.SetByteSize (DEFAULT_DISASM_BYTE_SIZE);
}
return Disassemble (debugger,
arch,
plugin_name,
exe_ctx,
range,
num_instructions,
num_mixed_context_lines,
options,
strm);
}
Instruction::Instruction(const Address &address, AddressClass addr_class) :
m_address (address),
m_address_class (addr_class),
m_opcode()
{
}
Instruction::~Instruction()
{
}
AddressClass
Instruction::GetAddressClass ()
{
if (m_address_class == eAddressClassInvalid)
m_address_class = m_address.GetAddressClass();
return m_address_class;
}
bool
Instruction::DumpEmulation (const ArchSpec &arch)
{
std::auto_ptr<EmulateInstruction> insn_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypeAny, NULL));
if (insn_emulator_ap.get())
{
insn_emulator_ap->SetInstruction (GetOpcode(), GetAddress(), NULL);
return insn_emulator_ap->EvaluateInstruction (0);
}
return false;
}
OptionValueSP
Instruction::ReadArray (FILE *in_file, Stream *out_stream, OptionValue::Type data_type)
{
bool done = false;
char buffer[1024];
OptionValueSP option_value_sp (new OptionValueArray (1u << data_type));
int idx = 0;
while (!done)
{
if (!fgets (buffer, 1023, in_file))
{
out_stream->Printf ("Instruction::ReadArray: Error reading file (fgets).\n");
option_value_sp.reset ();
return option_value_sp;
}
std::string line (buffer);
int len = line.size();
if (line[len-1] == '\n')
{
line[len-1] = '\0';
line.resize (len-1);
}
if ((line.size() == 1) && line[0] == ']')
{
done = true;
line.clear();
}
if (line.size() > 0)
{
std::string value;
RegularExpression reg_exp ("^[ \t]*([^ \t]+)[ \t]*$");
bool reg_exp_success = reg_exp.Execute (line.c_str(), 1);
if (reg_exp_success)
reg_exp.GetMatchAtIndex (line.c_str(), 1, value);
else
value = line;
OptionValueSP data_value_sp;
switch (data_type)
{
case OptionValue::eTypeUInt64:
data_value_sp.reset (new OptionValueUInt64 (0, 0));
data_value_sp->SetValueFromCString (value.c_str());
break;
// Other types can be added later as needed.
default:
data_value_sp.reset (new OptionValueString (value.c_str(), ""));
break;
}
option_value_sp->GetAsArray()->InsertValue (idx, data_value_sp);
++idx;
}
}
return option_value_sp;
}
OptionValueSP
Instruction::ReadDictionary (FILE *in_file, Stream *out_stream)
{
bool done = false;
char buffer[1024];
OptionValueSP option_value_sp (new OptionValueDictionary());
static ConstString encoding_key ("data_encoding");
OptionValue::Type data_type = OptionValue::eTypeInvalid;
while (!done)
{
// Read the next line in the file
if (!fgets (buffer, 1023, in_file))
{
out_stream->Printf ("Instruction::ReadDictionary: Error reading file (fgets).\n");
option_value_sp.reset ();
return option_value_sp;
}
// Check to see if the line contains the end-of-dictionary marker ("}")
std::string line (buffer);
int len = line.size();
if (line[len-1] == '\n')
{
line[len-1] = '\0';
line.resize (len-1);
}
if ((line.size() == 1) && (line[0] == '}'))
{
done = true;
line.clear();
}
// Try to find a key-value pair in the current line and add it to the dictionary.
if (line.size() > 0)
{
RegularExpression reg_exp ("^[ \t]*([a-zA-Z_][a-zA-Z0-9_]*)[ \t]*=[ \t]*(.*)[ \t]*$");
bool reg_exp_success = reg_exp.Execute (line.c_str(), 2);
std::string key;
std::string value;
if (reg_exp_success)
{
reg_exp.GetMatchAtIndex (line.c_str(), 1, key);
reg_exp.GetMatchAtIndex (line.c_str(), 2, value);
}
else
{
out_stream->Printf ("Instruction::ReadDictionary: Failure executing regular expression.\n");
option_value_sp.reset();
return option_value_sp;
}
ConstString const_key (key.c_str());
// Check value to see if it's the start of an array or dictionary.
lldb::OptionValueSP value_sp;
assert (value.empty() == false);
assert (key.empty() == false);
if (value[0] == '{')
{
assert (value.size() == 1);
// value is a dictionary
value_sp = ReadDictionary (in_file, out_stream);
if (value_sp.get() == NULL)
{
option_value_sp.reset ();
return option_value_sp;
}
}
else if (value[0] == '[')
{
assert (value.size() == 1);
// value is an array
value_sp = ReadArray (in_file, out_stream, data_type);
if (value_sp.get() == NULL)
{
option_value_sp.reset ();
return option_value_sp;
}
// We've used the data_type to read an array; re-set the type to Invalid
data_type = OptionValue::eTypeInvalid;
}
else if ((value[0] == '0') && (value[1] == 'x'))
{
value_sp.reset (new OptionValueUInt64 (0, 0));
value_sp->SetValueFromCString (value.c_str());
}
else
{
int len = value.size();
if ((value[0] == '"') && (value[len-1] == '"'))
value = value.substr (1, len-2);
value_sp.reset (new OptionValueString (value.c_str(), ""));
}
if (const_key == encoding_key)
{
// A 'data_encoding=..." is NOT a normal key-value pair; it is meta-data indicating the
// data type of an upcoming array (usually the next bit of data to be read in).
if (strcmp (value.c_str(), "uint32_t") == 0)
data_type = OptionValue::eTypeUInt64;
}
else
option_value_sp->GetAsDictionary()->SetValueForKey (const_key, value_sp, false);
}
}
return option_value_sp;
}
bool
Instruction::TestEmulation (Stream *out_stream, const char *file_name)
{
if (!out_stream)
return false;
if (!file_name)
{
out_stream->Printf ("Instruction::TestEmulation: Missing file_name.");
return false;
}
FILE *test_file = fopen (file_name, "r");
if (!test_file)
{
out_stream->Printf ("Instruction::TestEmulation: Attempt to open test file failed.");
return false;
}
char buffer[256];
if (!fgets (buffer, 255, test_file))
{
out_stream->Printf ("Instruction::TestEmulation: Error reading first line of test file.\n");
fclose (test_file);
return false;
}
if (strncmp (buffer, "InstructionEmulationState={", 27) != 0)
{
out_stream->Printf ("Instructin::TestEmulation: Test file does not contain emulation state dictionary\n");
fclose (test_file);
return false;
}
// Read all the test information from the test file into an OptionValueDictionary.
OptionValueSP data_dictionary_sp (ReadDictionary (test_file, out_stream));
if (data_dictionary_sp.get() == NULL)
{
out_stream->Printf ("Instruction::TestEmulation: Error reading Dictionary Object.\n");
fclose (test_file);
return false;
}
fclose (test_file);
OptionValueDictionary *data_dictionary = data_dictionary_sp->GetAsDictionary();
static ConstString description_key ("assembly_string");
static ConstString triple_key ("triple");
OptionValueSP value_sp = data_dictionary->GetValueForKey (description_key);
if (value_sp.get() == NULL)
{
out_stream->Printf ("Instruction::TestEmulation: Test file does not contain description string.\n");
return false;
}
SetDescription (value_sp->GetStringValue());
value_sp = data_dictionary->GetValueForKey (triple_key);
if (value_sp.get() == NULL)
{
out_stream->Printf ("Instruction::TestEmulation: Test file does not contain triple.\n");
return false;
}
ArchSpec arch;
arch.SetTriple (llvm::Triple (value_sp->GetStringValue()));
bool success = false;
std::auto_ptr<EmulateInstruction> insn_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypeAny, NULL));
if (insn_emulator_ap.get())
success = insn_emulator_ap->TestEmulation (out_stream, arch, data_dictionary);
if (success)
out_stream->Printf ("Emulation test succeeded.");
else
out_stream->Printf ("Emulation test failed.");
return success;
}
bool
Instruction::Emulate (const ArchSpec &arch,
uint32_t evaluate_options,
void *baton,
EmulateInstruction::ReadMemoryCallback read_mem_callback,
EmulateInstruction::WriteMemoryCallback write_mem_callback,
EmulateInstruction::ReadRegisterCallback read_reg_callback,
EmulateInstruction::WriteRegisterCallback write_reg_callback)
{
std::auto_ptr<EmulateInstruction> insn_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypeAny, NULL));
if (insn_emulator_ap.get())
{
insn_emulator_ap->SetBaton (baton);
insn_emulator_ap->SetCallbacks (read_mem_callback, write_mem_callback, read_reg_callback, write_reg_callback);
insn_emulator_ap->SetInstruction (GetOpcode(), GetAddress(), NULL);
return insn_emulator_ap->EvaluateInstruction (evaluate_options);
}
return false;
}
InstructionList::InstructionList() :
m_instructions()
{
}
InstructionList::~InstructionList()
{
}
size_t
InstructionList::GetSize() const
{
return m_instructions.size();
}
uint32_t
InstructionList::GetMaxOpcocdeByteSize () const
{
uint32_t max_inst_size = 0;
collection::const_iterator pos, end;
for (pos = m_instructions.begin(), end = m_instructions.end();
pos != end;
++pos)
{
uint32_t inst_size = (*pos)->GetOpcode().GetByteSize();
if (max_inst_size < inst_size)
max_inst_size = inst_size;
}
return max_inst_size;
}
InstructionSP
InstructionList::GetInstructionAtIndex (uint32_t idx) const
{
InstructionSP inst_sp;
if (idx < m_instructions.size())
inst_sp = m_instructions[idx];
return inst_sp;
}
void
InstructionList::Clear()
{
m_instructions.clear();
}
void
InstructionList::Append (lldb::InstructionSP &inst_sp)
{
if (inst_sp)
m_instructions.push_back(inst_sp);
}
size_t
Disassembler::ParseInstructions
(
const ExecutionContext *exe_ctx,
const AddressRange &range
)
{
Target *target = exe_ctx->target;
const addr_t byte_size = range.GetByteSize();
if (target == NULL || byte_size == 0 || !range.GetBaseAddress().IsValid())
return 0;
DataBufferHeap *heap_buffer = new DataBufferHeap (byte_size, '\0');
DataBufferSP data_sp(heap_buffer);
Error error;
const bool prefer_file_cache = true;
const size_t bytes_read = target->ReadMemory (range.GetBaseAddress(),
prefer_file_cache,
heap_buffer->GetBytes(),
heap_buffer->GetByteSize(),
error);
if (bytes_read > 0)
{
if (bytes_read != heap_buffer->GetByteSize())
heap_buffer->SetByteSize (bytes_read);
DataExtractor data (data_sp,
m_arch.GetByteOrder(),
m_arch.GetAddressByteSize());
return DecodeInstructions (range.GetBaseAddress(), data, 0, UINT32_MAX, false);
}
return 0;
}
size_t
Disassembler::ParseInstructions
(
const ExecutionContext *exe_ctx,
const Address &start,
uint32_t num_instructions
)
{
m_instruction_list.Clear();
if (num_instructions == 0 || !start.IsValid())
return 0;
Target *target = exe_ctx->target;
// Calculate the max buffer size we will need in order to disassemble
const addr_t byte_size = num_instructions * m_arch.GetMaximumOpcodeByteSize();
if (target == NULL || byte_size == 0)
return 0;
DataBufferHeap *heap_buffer = new DataBufferHeap (byte_size, '\0');
DataBufferSP data_sp (heap_buffer);
Error error;
bool prefer_file_cache = true;
const size_t bytes_read = target->ReadMemory (start,
prefer_file_cache,
heap_buffer->GetBytes(),
byte_size,
error);
if (bytes_read == 0)
return 0;
DataExtractor data (data_sp,
m_arch.GetByteOrder(),
m_arch.GetAddressByteSize());
const bool append_instructions = true;
DecodeInstructions (start,
data,
0,
num_instructions,
append_instructions);
return m_instruction_list.GetSize();
}
//----------------------------------------------------------------------
// Disassembler copy constructor
//----------------------------------------------------------------------
Disassembler::Disassembler(const ArchSpec& arch) :
m_arch (arch),
m_instruction_list(),
m_base_addr(LLDB_INVALID_ADDRESS)
{
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
Disassembler::~Disassembler()
{
}
InstructionList &
Disassembler::GetInstructionList ()
{
return m_instruction_list;
}
const InstructionList &
Disassembler::GetInstructionList () const
{
return m_instruction_list;
}
//----------------------------------------------------------------------
// Class PseudoInstruction
//----------------------------------------------------------------------
PseudoInstruction::PseudoInstruction () :
Instruction (Address(), eAddressClassUnknown),
m_description ()
{
}
PseudoInstruction::~PseudoInstruction ()
{
}
void
PseudoInstruction::Dump (lldb_private::Stream *s,
uint32_t max_opcode_byte_size,
bool show_address,
bool show_bytes,
const lldb_private::ExecutionContext* exe_ctx,
bool raw)
{
if (!s)
return;
if (show_bytes)
m_opcode.Dump (s, max_opcode_byte_size);
if (m_description.size() > 0)
s->Printf ("%s", m_description.c_str());
else
s->Printf ("<unknown>");
}
bool
PseudoInstruction::DoesBranch () const
{
// This is NOT a valid question for a pseudo instruction.
return false;
}
size_t
PseudoInstruction::Decode (const lldb_private::Disassembler &disassembler,
const lldb_private::DataExtractor &data,
uint32_t data_offset)
{
return m_opcode.GetByteSize();
}
void
PseudoInstruction::SetOpcode (size_t opcode_size, void *opcode_data)
{
if (!opcode_data)
return;
switch (opcode_size)
{
case 8:
{
uint8_t value8 = *((uint8_t *) opcode_data);
m_opcode.SetOpcode8 (value8);
break;
}
case 16:
{
uint16_t value16 = *((uint16_t *) opcode_data);
m_opcode.SetOpcode16 (value16);
break;
}
case 32:
{
uint32_t value32 = *((uint32_t *) opcode_data);
m_opcode.SetOpcode32 (value32);
break;
}
case 64:
{
uint64_t value64 = *((uint64_t *) opcode_data);
m_opcode.SetOpcode64 (value64);
break;
}
default:
break;
}
}
void
PseudoInstruction::SetDescription (const char *description)
{
if (description && strlen (description) > 0)
m_description = description;
}
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