/* * 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 . */ #include namespace ams::kern::svc { /* ============================= Common ============================= */ namespace { Result SetMemoryAttribute(uintptr_t address, size_t size, uint32_t mask, uint32_t attr) { /* Validate address / size. */ R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress()); R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize()); R_UNLESS(size > 0, svc::ResultInvalidSize()); R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory()); /* Validate the attribute and mask. */ constexpr u32 SupportedMask = ams::svc::MemoryAttribute_Uncached; R_UNLESS((mask | attr) == mask, svc::ResultInvalidCombination()); R_UNLESS((mask | attr | SupportedMask) == SupportedMask, svc::ResultInvalidCombination()); /* Validate that the region is in range for the current process. */ auto &page_table = GetCurrentProcess().GetPageTable(); R_UNLESS(page_table.Contains(address, size), svc::ResultInvalidCurrentMemory()); /* Set the memory attribute. */ return page_table.SetMemoryAttribute(address, size, mask, attr); } Result MapMemory(uintptr_t dst_address, uintptr_t src_address, size_t size) { /* Validate that addresses are page aligned. */ R_UNLESS(util::IsAligned(dst_address, PageSize), svc::ResultInvalidAddress()); R_UNLESS(util::IsAligned(src_address, PageSize), svc::ResultInvalidAddress()); /* Validate that size is positive and page aligned. */ R_UNLESS(size > 0, svc::ResultInvalidSize()); R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize()); /* Ensure that neither mapping overflows. */ R_UNLESS(src_address < src_address + size, svc::ResultInvalidCurrentMemory()); R_UNLESS(dst_address < dst_address + size, svc::ResultInvalidCurrentMemory()); /* Get the page table we're operating on. */ auto &page_table = GetCurrentProcess().GetPageTable(); /* Ensure that the memory we're mapping is in range. */ R_UNLESS(page_table.Contains(src_address, size), svc::ResultInvalidCurrentMemory()); R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_Stack), svc::ResultInvalidMemoryRegion()); /* Map the memory. */ return page_table.MapMemory(dst_address, src_address, size); } Result UnmapMemory(uintptr_t dst_address, uintptr_t src_address, size_t size) { /* Log the call parameters for debugging. */ MESOSPHERE_LOG("UnmapMemory(%zx, %zx, %zx)\n", dst_address, src_address, size); /* Validate that addresses are page aligned. */ R_UNLESS(util::IsAligned(dst_address, PageSize), svc::ResultInvalidAddress()); R_UNLESS(util::IsAligned(src_address, PageSize), svc::ResultInvalidAddress()); /* Validate that size is positive and page aligned. */ R_UNLESS(size > 0, svc::ResultInvalidSize()); R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize()); /* Ensure that neither mapping overflows. */ R_UNLESS(src_address < src_address + size, svc::ResultInvalidCurrentMemory()); R_UNLESS(dst_address < dst_address + size, svc::ResultInvalidCurrentMemory()); /* Get the page table we're operating on. */ auto &page_table = GetCurrentProcess().GetPageTable(); /* Ensure that the memory we're unmapping is in range. */ R_UNLESS(page_table.Contains(src_address, size), svc::ResultInvalidCurrentMemory()); R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_Stack), svc::ResultInvalidMemoryRegion()); /* Unmap the memory. */ return page_table.UnmapMemory(dst_address, src_address, size); } } /* ============================= 64 ABI ============================= */ Result SetMemoryPermission64(ams::svc::Address address, ams::svc::Size size, ams::svc::MemoryPermission perm) { MESOSPHERE_PANIC("Stubbed SvcSetMemoryPermission64 was called."); } Result SetMemoryAttribute64(ams::svc::Address address, ams::svc::Size size, uint32_t mask, uint32_t attr) { return SetMemoryAttribute(address, size, mask, attr); } Result MapMemory64(ams::svc::Address dst_address, ams::svc::Address src_address, ams::svc::Size size) { return MapMemory(dst_address, src_address, size); } Result UnmapMemory64(ams::svc::Address dst_address, ams::svc::Address src_address, ams::svc::Size size) { return UnmapMemory(dst_address, src_address, size); } /* ============================= 64From32 ABI ============================= */ Result SetMemoryPermission64From32(ams::svc::Address address, ams::svc::Size size, ams::svc::MemoryPermission perm) { MESOSPHERE_PANIC("Stubbed SvcSetMemoryPermission64From32 was called."); } Result SetMemoryAttribute64From32(ams::svc::Address address, ams::svc::Size size, uint32_t mask, uint32_t attr) { return SetMemoryAttribute(address, size, mask, attr); } Result MapMemory64From32(ams::svc::Address dst_address, ams::svc::Address src_address, ams::svc::Size size) { return MapMemory(dst_address, src_address, size); } Result UnmapMemory64From32(ams::svc::Address dst_address, ams::svc::Address src_address, ams::svc::Size size) { return UnmapMemory(dst_address, src_address, size); } }