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os: add UnsafeMemory apis

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This commit is contained in:
Michael Scire 2023-03-01 03:19:04 -07:00
parent f636596ee2
commit 982389dceb
6 changed files with 147 additions and 0 deletions
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1
libraries/libstratosphere/include/stratosphere/os.hpp
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@ -29,6 +29,7 @@
#include <stratosphere/os/os_process_memory_api.hpp>
#include <stratosphere/os/os_process_code_memory_api.hpp>
#include <stratosphere/os/os_insecure_memory_api.hpp>
#include <stratosphere/os/os_unsafe_memory_api.hpp>
#include <stratosphere/os/os_random.hpp>
#include <stratosphere/os/os_mutex.hpp>
#include <stratosphere/os/os_condition_variable.hpp>

25
libraries/libstratosphere/include/stratosphere/os/os_unsafe_memory_api.hpp Normal file
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@ -0,0 +1,25 @@
/*
* Copyright (c) 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 <stratosphere/os/os_memory_common.hpp>
namespace ams::os {
Result AllocateUnsafeMemory(uintptr_t *out_address, size_t size);
Result FreeUnsafeMemory(uintptr_t address, size_t size);
}

1
libraries/libstratosphere/source/os/impl/os_insecure_memory_impl.os.horizon.cpp
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@ -24,6 +24,7 @@ namespace ams::os::impl {
R_RETURN(impl::GetAslrSpaceManager().MapAtRandomAddress(out_address,
[](uintptr_t map_address, size_t map_size) -> Result {
R_TRY_CATCH(svc::MapInsecureMemory(map_address, map_size)) {
R_CONVERT(svc::ResultOutOfMemory, os::ResultOutOfMemory())
R_CONVERT(svc::ResultInvalidCurrentMemory, os::ResultInvalidCurrentMemoryState())
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;

27
libraries/libstratosphere/source/os/impl/os_unsafe_memory_impl.hpp Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (c) 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 <stratosphere.hpp>
namespace ams::os::impl {
class UnsafeMemoryImpl {
public:
static Result AllocateUnsafeMemoryImpl(uintptr_t *out_address, size_t size);
static Result FreeUnsafeMemoryImpl(uintptr_t address, size_t size);
};
}

54
libraries/libstratosphere/source/os/impl/os_unsafe_memory_impl.os.horizon.cpp Normal file
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@ -0,0 +1,54 @@
/*
* Copyright (c) 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/>.
*/
#include <stratosphere.hpp>
#include "os_unsafe_memory_impl.hpp"
#include "os_aslr_space_manager.hpp"
namespace ams::os::impl {
Result UnsafeMemoryImpl::AllocateUnsafeMemoryImpl(uintptr_t *out_address, size_t size) {
/* Map at a random address. */
R_RETURN(impl::GetAslrSpaceManager().MapAtRandomAddress(out_address,
[](uintptr_t map_address, size_t map_size) -> Result {
R_TRY_CATCH(svc::MapPhysicalMemoryUnsafe(map_address, map_size)) {
R_CONVERT(svc::ResultOutOfResource, os::ResultOutOfResource())
R_CONVERT(svc::ResultOutOfMemory, os::ResultOutOfMemory())
R_CONVERT(svc::ResultInvalidCurrentMemory, os::ResultInvalidCurrentMemoryState())
R_CONVERT(svc::ResultLimitReached, os::ResultOutOfMemory())
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
R_SUCCEED();
},
[](uintptr_t map_address, size_t map_size) -> void {
R_ABORT_UNLESS(UnsafeMemoryImpl::FreeUnsafeMemoryImpl(map_address, map_size));
},
size,
0
));
}
Result UnsafeMemoryImpl::FreeUnsafeMemoryImpl(uintptr_t address, size_t size) {
R_TRY_CATCH(svc::UnmapPhysicalMemoryUnsafe(address, size)) {
R_CONVERT(svc::ResultOutOfResource, os::ResultOutOfResource())
R_CONVERT(svc::ResultOutOfMemory, os::ResultOutOfResource())
R_CONVERT(svc::ResultInvalidCurrentMemory, os::ResultBusy())
R_CONVERT(svc::ResultInvalidMemoryRegion, os::ResultInvalidParameter())
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
R_SUCCEED();
}
}

39
libraries/libstratosphere/source/os/os_unsafe_memory.cpp Normal file
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@ -0,0 +1,39 @@
/*
* Copyright (c) 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/>.
*/
#include <stratosphere.hpp>
#include "impl/os_unsafe_memory_impl.hpp"
namespace ams::os {
Result AllocateUnsafeMemory(uintptr_t *out_address, size_t size) {
/* Check arguments. */
AMS_ASSERT(size > 0);
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
/* Allocate memory. */
R_RETURN(impl::UnsafeMemoryImpl::AllocateUnsafeMemoryImpl(out_address, size));
}
Result FreeUnsafeMemory(uintptr_t address, size_t size) {
/* Check arguments. */
AMS_ASSERT(util::IsAligned(address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
/* Free memory. */
R_RETURN(impl::UnsafeMemoryImpl::FreeUnsafeMemoryImpl(address, size));
}
}