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llvm-project/lldb/source/Commands/CommandObjectDisassemble.cpp
Greg Clayton a701509229 Fixed the way set/show variables were being accessed to being natively 
accessed by the objects that own the settings. The previous approach wasn't
very usable and made for a lot of unnecessary code just to access variables
that were already owned by the objects.

While I fixed those things, I saw that CommandObject objects should really
have a reference to their command interpreter so they can access the terminal
with if they want to output usaage. Fixed up all CommandObjects to take
an interpreter and cleaned up the API to not need the interpreter to be
passed in.

Fixed the disassemble command to output the usage if no options are passed
down and arguments are passed (all disassebmle variants take options, there
are no "args only").

llvm-svn: 114252
2010-09-18 01:14:36 +00:00

286 lines
9.6 KiB
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//===-- CommandObjectDisassemble.cpp ----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CommandObjectDisassemble.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/AddressRange.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Interpreter/CommandCompletions.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Core/Disassembler.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Core/SourceManager.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#define DEFAULT_DISASM_BYTE_SIZE 32
using namespace lldb;
using namespace lldb_private;
CommandObjectDisassemble::CommandOptions::CommandOptions () :
Options(),
m_func_name(),
m_start_addr(),
m_end_addr ()
{
ResetOptionValues();
}
CommandObjectDisassemble::CommandOptions::~CommandOptions ()
{
}
Error
CommandObjectDisassemble::CommandOptions::SetOptionValue (int option_idx, const char *option_arg)
{
Error error;
char short_option = (char) m_getopt_table[option_idx].val;
switch (short_option)
{
case 'm':
show_mixed = true;
break;
case 'c':
num_lines_context = Args::StringToUInt32(option_arg, 0, 0);
break;
case 'b':
show_bytes = true;
break;
case 's':
m_start_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 0);
if (m_start_addr == LLDB_INVALID_ADDRESS)
m_start_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 16);
if (m_start_addr == LLDB_INVALID_ADDRESS)
error.SetErrorStringWithFormat ("Invalid start address string '%s'.\n", optarg);
break;
case 'e':
m_end_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 0);
if (m_end_addr == LLDB_INVALID_ADDRESS)
m_end_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 16);
if (m_end_addr == LLDB_INVALID_ADDRESS)
error.SetErrorStringWithFormat ("Invalid end address string '%s'.\n", optarg);
break;
case 'n':
m_func_name = option_arg;
break;
case 'r':
raw = true;
break;
default:
error.SetErrorStringWithFormat("Unrecognized short option '%c'.\n", short_option);
break;
}
return error;
}
void
CommandObjectDisassemble::CommandOptions::ResetOptionValues ()
{
Options::ResetOptionValues();
show_mixed = false;
show_bytes = false;
num_lines_context = 0;
m_func_name.clear();
m_start_addr = LLDB_INVALID_ADDRESS;
m_end_addr = LLDB_INVALID_ADDRESS;
raw = false;
}
const lldb::OptionDefinition*
CommandObjectDisassemble::CommandOptions::GetDefinitions ()
{
return g_option_table;
}
lldb::OptionDefinition
CommandObjectDisassemble::CommandOptions::g_option_table[] =
{
{ LLDB_OPT_SET_ALL, false, "bytes", 'b', no_argument, NULL, 0, NULL, "Show opcode bytes when disassembling."},
{ LLDB_OPT_SET_ALL, false, "context", 'c', required_argument, NULL, 0, "<num-lines>", "Number of context lines of source to show."},
{ LLDB_OPT_SET_ALL, false, "mixed", 'm', no_argument, NULL, 0, NULL, "Enable mixed source and assembly display."},
{ LLDB_OPT_SET_ALL, false, "raw", 'r', no_argument, NULL, 0, NULL, "Print raw disassembly with no symbol information."},
{ LLDB_OPT_SET_1, true, "start-address", 's', required_argument, NULL, 0, "<start-address>", "Address to start disassembling."},
{ LLDB_OPT_SET_1, false, "end-address", 'e', required_argument, NULL, 0, "<end-address>", "Address to start disassembling."},
{ LLDB_OPT_SET_2, true, "name", 'n', required_argument, NULL, CommandCompletions::eSymbolCompletion, "<function-name>", "Disassemble entire contents of the given function name."},
{ LLDB_OPT_SET_3, false, "current-frame", 'f', no_argument, NULL, 0, "<current-frame>", "Disassemble entire contents of the current frame's function."},
{ 0, false, NULL, 0, 0, NULL, 0, NULL, NULL }
};
//-------------------------------------------------------------------------
// CommandObjectDisassemble
//-------------------------------------------------------------------------
CommandObjectDisassemble::CommandObjectDisassemble (CommandInterpreter &interpreter) :
CommandObject (interpreter,
"disassemble",
"Disassemble bytes in the current function, or elsewhere in the executable program as specified by the user.",
"disassemble [<cmd-options>]")
{
}
CommandObjectDisassemble::~CommandObjectDisassemble()
{
}
bool
CommandObjectDisassemble::Execute
(
Args& command,
CommandReturnObject &result
)
{
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
if (target == NULL)
{
result.AppendError ("invalid target, set executable file using 'file' command");
result.SetStatus (eReturnStatusFailed);
return false;
}
ArchSpec arch(target->GetArchitecture());
if (!arch.IsValid())
{
result.AppendError ("target needs valid architecure in order to be able to disassemble");
result.SetStatus (eReturnStatusFailed);
return false;
}
Disassembler *disassembler = Disassembler::FindPlugin(arch);
if (disassembler == NULL)
{
result.AppendErrorWithFormat ("Unable to find Disassembler plug-in for %s architecture.\n", arch.AsCString());
result.SetStatus (eReturnStatusFailed);
return false;
}
result.SetStatus (eReturnStatusSuccessFinishResult);
if (command.GetArgumentCount() != 0)
{
result.AppendErrorWithFormat ("\"disassemble\" arguments are specified as options.\n");
GetOptions()->GenerateOptionUsage (m_interpreter,
result.GetErrorStream(),
this);
result.SetStatus (eReturnStatusFailed);
return false;
}
ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext());
if (m_options.show_mixed && m_options.num_lines_context == 0)
m_options.num_lines_context = 1;
if (!m_options.m_func_name.empty())
{
ConstString name(m_options.m_func_name.c_str());
if (Disassembler::Disassemble (m_interpreter.GetDebugger(),
arch,
exe_ctx,
name,
NULL, // Module *
m_options.show_mixed ? m_options.num_lines_context : 0,
m_options.show_bytes,
result.GetOutputStream()))
{
result.SetStatus (eReturnStatusSuccessFinishResult);
}
else
{
result.AppendErrorWithFormat ("Unable to find symbol with name '%s'.\n", name.GetCString());
result.SetStatus (eReturnStatusFailed);
}
}
else
{
AddressRange range;
if (m_options.m_start_addr != LLDB_INVALID_ADDRESS)
{
range.GetBaseAddress().SetOffset (m_options.m_start_addr);
if (m_options.m_end_addr != LLDB_INVALID_ADDRESS)
{
if (m_options.m_end_addr < m_options.m_start_addr)
{
result.AppendErrorWithFormat ("End address before start address.\n");
result.SetStatus (eReturnStatusFailed);
return false;
}
range.SetByteSize (m_options.m_end_addr - m_options.m_start_addr);
}
else
range.SetByteSize (DEFAULT_DISASM_BYTE_SIZE);
}
else
{
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();
}
else
{
result.AppendError ("invalid frame");
result.SetStatus (eReturnStatusFailed);
return false;
}
}
if (range.GetByteSize() == 0)
range.SetByteSize(DEFAULT_DISASM_BYTE_SIZE);
if (Disassembler::Disassemble (m_interpreter.GetDebugger(),
arch,
exe_ctx,
range,
m_options.show_mixed ? m_options.num_lines_context : 0,
m_options.show_bytes,
result.GetOutputStream()))
{
result.SetStatus (eReturnStatusSuccessFinishResult);
}
else
{
result.AppendErrorWithFormat ("Failed to disassemble memory at 0x%8.8llx.\n", m_options.m_start_addr);
result.SetStatus (eReturnStatusFailed);
}
}
return result.Succeeded();
}
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