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https://github.com/Atmosphere-NX/Atmosphere-libs.git
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77 lines
3.2 KiB
C++
77 lines
3.2 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern::svc {
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/* ============================= Common ============================= */
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namespace {
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Result MapInsecurePhysicalMemory(uintptr_t address, size_t size) {
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/* Validate the address/size. */
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R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
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R_UNLESS(size > 0, svc::ResultInvalidSize());
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R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
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R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
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/* Verify that the mapping is in range. */
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auto &pt = GetCurrentProcess().GetPageTable();
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R_UNLESS(GetCurrentProcess().GetPageTable().CanContain(address, size, KMemoryState_Insecure), svc::ResultInvalidMemoryRegion());
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/* Map the insecure memory. */
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R_RETURN(pt.MapInsecurePhysicalMemory(address, size));
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}
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Result UnmapInsecurePhysicalMemory(uintptr_t address, size_t size) {
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/* Validate the address/size. */
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R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
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R_UNLESS(size > 0, svc::ResultInvalidSize());
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R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
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R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
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/* Verify that the mapping is in range. */
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auto &pt = GetCurrentProcess().GetPageTable();
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R_UNLESS(GetCurrentProcess().GetPageTable().CanContain(address, size, KMemoryState_Insecure), svc::ResultInvalidMemoryRegion());
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/* Map the insecure memory. */
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R_RETURN(pt.UnmapInsecurePhysicalMemory(address, size));
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}
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}
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/* ============================= 64 ABI ============================= */
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Result MapInsecurePhysicalMemory64(ams::svc::Address address, ams::svc::Size size) {
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R_RETURN(MapInsecurePhysicalMemory(address, size));
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}
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Result UnmapInsecurePhysicalMemory64(ams::svc::Address address, ams::svc::Size size) {
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R_RETURN(UnmapInsecurePhysicalMemory(address, size));
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}
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/* ============================= 64From32 ABI ============================= */
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Result MapInsecurePhysicalMemory64From32(ams::svc::Address address, ams::svc::Size size) {
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R_RETURN(MapInsecurePhysicalMemory(address, size));
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}
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Result UnmapInsecurePhysicalMemory64From32(ams::svc::Address address, ams::svc::Size size) {
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R_RETURN(UnmapInsecurePhysicalMemory(address, size));
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}
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}
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