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[core/hle/kernel/svc] add missing CanContain check for {Un}MapProcessCodeMemory, remove 4KB align func (#4164)

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does what it says, adds a missing check for that specific SVC
also removes that 4kb "helper" function which is just a fancy "IsAligned"

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4164
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
This commit is contained in:
lizzie 2026-07-07 20:02:26 +02:00 • committed by crueter
parent f423471cc0
commit 9677522e6c
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GPG key ID: 425ACD2D4830EBC6
5 changed files with 29 additions and 27 deletions
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11
src/core/hle/kernel/svc/svc_memory.cpp
View file

@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
@ -32,14 +32,13 @@ constexpr bool IsValidAddressRange(u64 address, u64 size) {
// Helper function that performs the common sanity checks for svcMapMemory
// and svcUnmapMemory. This is doable, as both functions perform their sanitizing
// in the same order.
Result MapUnmapMemorySanityChecks(const KProcessPageTable& manager, u64 dst_addr, u64 src_addr,
u64 size) {
if (!Common::Is4KBAligned(dst_addr)) {
Result MapUnmapMemorySanityChecks(const KProcessPageTable& manager, u64 dst_addr, u64 src_addr, u64 size) {
if (!Common::IsAligned(dst_addr, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Destination address is not aligned to 4KB, 0x{:016X}", dst_addr);
R_THROW(ResultInvalidAddress);
}
if (!Common::Is4KBAligned(src_addr)) {
if (!Common::IsAligned(src_addr, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Source address is not aligned to 4KB, 0x{:016X}", src_addr);
R_THROW(ResultInvalidSize);
}
@ -49,7 +48,7 @@ Result MapUnmapMemorySanityChecks(const KProcessPageTable& manager, u64 dst_addr
R_THROW(ResultInvalidSize);
}
if (!Common::Is4KBAligned(size)) {
if (!Common::IsAligned(size, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:016X}", size);
R_THROW(ResultInvalidSize);
}

10
src/core/hle/kernel/svc/svc_physical_memory.cpp
View file

@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
@ -33,12 +33,12 @@ Result SetHeapSize(Core::System& system, u64* out_address, u64 size) {
Result MapPhysicalMemory(Core::System& system, u64 addr, u64 size) {
LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size={:#X}", addr, size);
if (!Common::Is4KBAligned(addr)) {
if (!Common::IsAligned(addr, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr);
R_THROW(ResultInvalidAddress);
}
if (!Common::Is4KBAligned(size)) {
if (!Common::IsAligned(size, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, {:#X}", size);
R_THROW(ResultInvalidSize);
}
@ -82,12 +82,12 @@ Result MapPhysicalMemory(Core::System& system, u64 addr, u64 size) {
Result UnmapPhysicalMemory(Core::System& system, u64 addr, u64 size) {
LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size={:#X}", addr, size);
if (!Common::Is4KBAligned(addr)) {
if (!Common::IsAligned(addr, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr);
R_THROW(ResultInvalidAddress);
}
if (!Common::Is4KBAligned(size)) {
if (!Common::IsAligned(size, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, {:#X}", size);
R_THROW(ResultInvalidSize);
}

14
src/core/hle/kernel/svc/svc_process_memory.cpp
View file

@ -140,19 +140,19 @@ Result MapProcessCodeMemory(Core::System& system, Handle process_handle, u64 dst
"src_address=0x{:016X}, size=0x{:016X}",
process_handle, dst_address, src_address, size);
if (!Common::Is4KBAligned(src_address)) {
if (!Common::IsAligned(src_address, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "src_address is not page-aligned (src_address=0x{:016X}).",
src_address);
R_THROW(ResultInvalidAddress);
}
if (!Common::Is4KBAligned(dst_address)) {
if (!Common::IsAligned(dst_address, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "dst_address is not page-aligned (dst_address=0x{:016X}).",
dst_address);
R_THROW(ResultInvalidAddress);
}
if (size == 0 || !Common::Is4KBAligned(size)) {
if (size == 0 || !Common::IsAligned(size, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Size is zero or not page-aligned (size=0x{:016X})", size);
R_THROW(ResultInvalidSize);
}
@ -190,6 +190,7 @@ Result MapProcessCodeMemory(Core::System& system, Handle process_handle, u64 dst
R_THROW(ResultInvalidCurrentMemory);
}
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState::AliasCode), ResultInvalidCurrentMemory);
R_RETURN(page_table.MapCodeMemory(dst_address, src_address, size));
}
@ -200,19 +201,19 @@ Result UnmapProcessCodeMemory(Core::System& system, Handle process_handle, u64 d
"size=0x{:016X}",
process_handle, dst_address, src_address, size);
if (!Common::Is4KBAligned(dst_address)) {
if (!Common::IsAligned(dst_address, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "dst_address is not page-aligned (dst_address=0x{:016X}).",
dst_address);
R_THROW(ResultInvalidAddress);
}
if (!Common::Is4KBAligned(src_address)) {
if (!Common::IsAligned(src_address, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "src_address is not page-aligned (src_address=0x{:016X}).",
src_address);
R_THROW(ResultInvalidAddress);
}
if (size == 0 || !Common::Is4KBAligned(size)) {
if (size == 0 || !Common::IsAligned(size, Core::Memory::YUZU_PAGESIZE)) {
LOG_ERROR(Kernel_SVC, "Size is zero or not page-aligned (size=0x{:016X}).", size);
R_THROW(ResultInvalidSize);
}
@ -250,6 +251,7 @@ Result UnmapProcessCodeMemory(Core::System& system, Handle process_handle, u64 d
R_THROW(ResultInvalidCurrentMemory);
}
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState::AliasCode), ResultInvalidCurrentMemory);
R_RETURN(page_table.UnmapCodeMemory(dst_address, src_address, size));
}