Atmosphere/stratosphere/loader/source/ldr_map.hpp

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/*
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* Copyright (c) 2018-2019 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/>.
*/
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#pragma once
#include <switch.h>
#include <stratosphere.hpp>
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class MapUtils {
public:
struct AddressSpaceInfo {
u64 heap_base;
u64 heap_size;
u64 heap_end;
u64 map_base;
u64 map_size;
u64 map_end;
u64 addspace_base;
u64 addspace_size;
u64 addspace_end;
};
static Result GetAddressSpaceInfo(AddressSpaceInfo *out, Handle process_h);
static Result LocateSpaceForMapDeprecated(u64 *out, u64 out_size);
static Result LocateSpaceForMapModern(u64 *out, u64 out_size);
static Result LocateSpaceForMap(u64 *out, u64 out_size);
};
class AutoCloseMap {
private:
void *mapped_address = nullptr;
u64 base_address = 0;
u64 size = 0;
Handle process_handle = 0;
public:
~AutoCloseMap() {
Close();
}
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void *GetMappedAddress() {
return this->mapped_address;
}
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Result Open(Handle process_h, u64 address, u64 size) {
u64 try_address;
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/* Find an address to map at. */
R_TRY(MapUtils::LocateSpaceForMap(&try_address, size));
/* Actually map at address. */
void *try_map_address = reinterpret_cast<void *>(try_address);
R_TRY(svcMapProcessMemory(try_map_address, process_h, address, size));
this->mapped_address = try_map_address;
this->process_handle = process_h;
this->base_address = address;
this->size = size;
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return ResultSuccess;
}
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void Close() {
if (this->mapped_address) {
if (R_FAILED(svcUnmapProcessMemory(this->mapped_address, this->process_handle, this->base_address, this->size))) {
std::abort();
}
this->mapped_address = NULL;
}
}
};