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//===-- CommandObjectRegister.cpp -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CommandObjectRegister.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/DataExtractor.h"
#include "lldb/Core/Scalar.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/RegisterContext.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// "register read"
//----------------------------------------------------------------------
class CommandObjectRegisterRead : public CommandObject
{
public:
CommandObjectRegisterRead () :
CommandObject ("register read",
"Dump the contents of one or more register values from the current frame.",
"register read [<reg-name1> [<reg-name2> [...]]]",
eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
{
}
virtual
~CommandObjectRegisterRead ()
{
}
virtual bool
Execute
(
CommandInterpreter &interpreter,
Args& command,
CommandReturnObject &result
)
{
StreamString &output_stream = result.GetOutputStream();
DataExtractor reg_data;
ExecutionContext exe_ctx(interpreter.GetDebugger().GetExecutionContext());
RegisterContext *reg_context = exe_ctx.GetRegisterContext ();
if (reg_context)
{
const RegisterInfo *reg_info = NULL;
if (command.GetArgumentCount() == 0)
{
uint32_t set_idx;
const uint32_t num_register_sets = reg_context->GetRegisterSetCount();
for (set_idx = 0; set_idx < num_register_sets; ++set_idx)
{
uint32_t unavailable_count = 0;
const RegisterSet * const reg_set = reg_context->GetRegisterSet(set_idx);
output_stream.Printf ("%s:\n", reg_set->name);
output_stream.IndentMore ();
const uint32_t num_registers = reg_set->num_registers;
for (uint32_t reg_idx = 0; reg_idx < num_registers; ++reg_idx)
{
uint32_t reg = reg_set->registers[reg_idx];
reg_info = reg_context->GetRegisterInfoAtIndex(reg);
if (reg_context->ReadRegisterBytes(reg, reg_data))
{
output_stream.Indent ();
output_stream.Printf ("%-12s = ", reg_info ? reg_info->name : "<INVALID REGINFO>");
reg_data.Dump(&output_stream, 0, reg_info->format, reg_info->byte_size, 1, UINT32_MAX, LLDB_INVALID_ADDRESS, 0, 0);
output_stream.EOL();
}
else
{
++unavailable_count;
}
}
if (unavailable_count)
{
output_stream.Indent ();
output_stream.Printf("%u registers were unavailable.\n", unavailable_count);
}
output_stream.IndentLess ();
output_stream.EOL();
}
}
else
{
const char *arg_cstr;
for (int arg_idx = 0; (arg_cstr = command.GetArgumentAtIndex(arg_idx)) != NULL; ++arg_idx)
{
reg_info = reg_context->GetRegisterInfoByName(arg_cstr);
if (reg_info)
{
output_stream.Printf("%-12s = ", reg_info->name);
if (reg_context->ReadRegisterBytes(reg_info->reg, reg_data))
{
reg_data.Dump(&output_stream, 0, reg_info->format, reg_info->byte_size, 1, UINT32_MAX, LLDB_INVALID_ADDRESS, 0, 0);
}
else
{
output_stream.PutCString ("error: unavailable");
}
output_stream.EOL();
}
else
{
result.AppendErrorWithFormat ("Invalid register name '%s'.\n", arg_cstr);
}
}
}
}
else
{
result.AppendError ("no current frame");
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
//----------------------------------------------------------------------
// "register write"
//----------------------------------------------------------------------
class CommandObjectRegisterWrite : public CommandObject
{
public:
CommandObjectRegisterWrite () :
CommandObject ("register write",
"Modify a single register value.",
"register write <reg-name> <value>",
eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
{
}
virtual
~CommandObjectRegisterWrite ()
{
}
virtual bool
Execute
(
CommandInterpreter &interpreter,
Args& command,
CommandReturnObject &result
)
{
DataExtractor reg_data;
ExecutionContext exe_ctx(interpreter.GetDebugger().GetExecutionContext());
RegisterContext *reg_context = exe_ctx.GetRegisterContext ();
if (reg_context)
{
if (command.GetArgumentCount() != 2)
{
result.AppendError ("register write takes exactly 2 arguments: <reg-name> <value>");
result.SetStatus (eReturnStatusFailed);
}
else
{
const char *reg_name = command.GetArgumentAtIndex(0);
const char *value_str = command.GetArgumentAtIndex(1);
const RegisterInfo *reg_info = reg_context->GetRegisterInfoByName(reg_name);
if (reg_info)
{
Scalar scalar;
Error error(scalar.SetValueFromCString (value_str, reg_info->encoding, reg_info->byte_size));
if (error.Success())
{
if (reg_context->WriteRegisterValue(reg_info->reg, scalar))
{
result.SetStatus (eReturnStatusSuccessFinishNoResult);
return true;
}
}
else
{
result.AppendErrorWithFormat ("Failed to write register '%s' with value '%s': %s\n",
reg_name,
value_str,
error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
else
{
result.AppendErrorWithFormat ("Register not found for '%s'.\n", reg_name);
result.SetStatus (eReturnStatusFailed);
}
}
}
else
{
result.AppendError ("no current frame");
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
//----------------------------------------------------------------------
// CommandObjectRegister constructor
//----------------------------------------------------------------------
CommandObjectRegister::CommandObjectRegister(CommandInterpreter &interpreter) :
CommandObjectMultiword ("register",
"A set of commands to access thread registers.",
"register [read|write] ...")
{
LoadSubCommand (interpreter, "read", CommandObjectSP (new CommandObjectRegisterRead ()));
LoadSubCommand (interpreter, "write", CommandObjectSP (new CommandObjectRegisterWrite ()));
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
CommandObjectRegister::~CommandObjectRegister()
{
}
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