Atmosphere/exosphere2/program/source/smc/secmon_page_mapper.hpp

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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <exosphere.hpp>
#include "secmon_smc_common.hpp"
namespace ams::secmon::smc {
namespace impl {
class PageMapperImpl {
private:
uintptr_t physical_address;
uintptr_t virtual_address;
public:
constexpr PageMapperImpl(uintptr_t phys) : physical_address(util::AlignDown(phys, 4_KB)), virtual_address() { /* ... */ }
void *GetPointerTo(uintptr_t phys, size_t size) const;
bool CopyToUser(uintptr_t dst_phys, const void *src, size_t size) const;
bool CopyFromUser(void *dst, uintptr_t src_phys, size_t size) const;
template<auto F>
bool MapImpl() {
this->virtual_address = F(this->physical_address);
return this->virtual_address != 0;
}
template<auto F>
void UnmapImpl() {
F();
this->virtual_address = 0;
}
};
}
class UserPageMapper : public impl::PageMapperImpl {
public:
constexpr UserPageMapper(uintptr_t phys) : PageMapperImpl(phys) { /* ... */ }
bool Map();
};
class AtmosphereIramPageMapper : public impl::PageMapperImpl {
public:
constexpr AtmosphereIramPageMapper(uintptr_t phys) : PageMapperImpl(phys) { /* ... */ }
~AtmosphereIramPageMapper();
bool Map();
};
class AtmosphereUserPageMapper : public impl::PageMapperImpl {
public:
constexpr AtmosphereUserPageMapper(uintptr_t phys) : PageMapperImpl(phys) { /* ... */ }
~AtmosphereUserPageMapper();
bool Map();
};
}