Files
llvm/lldb/source/Interpreter/OptionGroupWatchpoint.cpp
Johnny Chen 3cb41e82cb Give more explicit error messages when watchpoint creation command (watchpoint set) fails,
like number of supported hardware watchpoints reached or the watch size is not allowed.

llvm-svn: 157948
2012-06-04 20:08:23 +00:00

117 lines
3.2 KiB
C++

//===-- OptionGroupWatchpoint.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/Interpreter/OptionGroupWatchpoint.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-enumerations.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Utility/Utils.h"
using namespace lldb;
using namespace lldb_private;
static OptionEnumValueElement g_watch_type[] =
{
{ OptionGroupWatchpoint::eWatchRead, "read", "Watch for read"},
{ OptionGroupWatchpoint::eWatchWrite, "write", "Watch for write"},
{ OptionGroupWatchpoint::eWatchReadWrite, "read_write", "Watch for read/write"},
{ 0, NULL, NULL }
};
static OptionEnumValueElement g_watch_size[] =
{
{ 1, "1", "Watch for byte size of 1"},
{ 2, "2", "Watch for byte size of 2"},
{ 4, "4", "Watch for byte size of 4"},
{ 8, "8", "Watch for byte size of 8"},
{ 0, NULL, NULL }
};
static OptionDefinition
g_option_table[] =
{
{ LLDB_OPT_SET_1, false, "watch", 'w', required_argument, g_watch_type, 0, eArgTypeWatchType, "Specify the type of watching to perform."},
{ LLDB_OPT_SET_1, false, "xsize", 'x', required_argument, g_watch_size, 0, eArgTypeByteSize, "Number of bytes to use to watch a region."}
};
bool
OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size)
{
for (uint32_t i = 0; i < llvm::array_lengthof(g_watch_size); ++i)
{
if (g_watch_size[i].value == 0)
break;
if (watch_size == g_watch_size[i].value)
return true;
}
return false;
}
OptionGroupWatchpoint::OptionGroupWatchpoint () :
OptionGroup()
{
}
OptionGroupWatchpoint::~OptionGroupWatchpoint ()
{
}
Error
OptionGroupWatchpoint::SetOptionValue (CommandInterpreter &interpreter,
uint32_t option_idx,
const char *option_arg)
{
Error error;
char short_option = (char) g_option_table[option_idx].short_option;
switch (short_option)
{
case 'w':
watch_type = (WatchType) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error);
if (error.Success())
watch_type_specified = true;
break;
case 'x':
watch_size = (WatchType) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error);
break;
default:
error.SetErrorStringWithFormat("unrecognized short option '%c'", short_option);
break;
}
return error;
}
void
OptionGroupWatchpoint::OptionParsingStarting (CommandInterpreter &interpreter)
{
watch_type_specified = false;
watch_type = eWatchInvalid;
watch_size = 0;
}
const OptionDefinition*
OptionGroupWatchpoint::GetDefinitions ()
{
return g_option_table;
}
uint32_t
OptionGroupWatchpoint::GetNumDefinitions ()
{
return llvm::array_lengthof(g_option_table);
}