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// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "winapi-debug" project.
// For details, see https://github.com/egor-tensin/winapi-debug.
// Distributed under the MIT License.
#include <winapi/debug.hpp>
#include <winapi/utf8.hpp>
#include <cstring>
#include <limits>
#include <sstream>
#include <stdexcept>
#include <string>
namespace winapi {
ModuleInfo::ModuleInfo() : ModuleInfo{create_impl()} {}
ModuleInfo::ModuleInfo(const Impl& impl) : impl{impl} {
if (impl.SizeOfStruct != sizeof(impl))
throw std::runtime_error{"invalid IMAGEHLP_MODULE64.SizeOfStruct"};
}
ModuleInfo::Impl ModuleInfo::create_impl() {
Impl impl;
std::memset(&impl, 0, sizeof(impl));
impl.SizeOfStruct = sizeof(impl);
return impl;
}
std::string ModuleInfo::get_name() const {
return winapi::narrow(impl.ModuleName);
}
Address Module::translate_offline_address(Address offline) const {
if (offline < get_offline_base())
throw std::range_error{invalid_offline_address(offline)};
const auto offset = offline - get_offline_base();
auto online = offset;
// Check that it fits the address space.
const auto max_addr = std::numeric_limits<decltype(online)>::max();
if (online > max_addr - get_online_base())
throw std::range_error{invalid_offline_address(offline)};
online += get_online_base();
return online;
}
Address Module::translate_online_address(Address online) const {
if (online < get_online_base())
throw std::range_error{invalid_online_address(online)};
const auto offset = online - get_online_base();
auto offline = offset;
// Check that it fits the address space.
const auto max_addr = std::numeric_limits<decltype(offline)>::max();
if (offline > max_addr - get_offline_base())
throw std::range_error{invalid_online_address(offline)};
offline += get_offline_base();
return offline;
}
std::string Module::invalid_offline_address(Address offline) const {
std::ostringstream oss;
oss << "offline address " << address::format(offline) << " doesn't belong to module "
<< get_name() << " (base offline address " << address::format(get_offline_base()) << ')';
return oss.str();
}
std::string Module::invalid_online_address(Address online) const {
std::ostringstream oss;
oss << "online address " << address::format(online) << " doesn't belong to module "
<< get_name() << " (base online address " << address::format(get_online_base()) << ')';
return oss.str();
}
} // namespace winapi
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