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core: hle: kernel: Implement SetMemoryPermission.

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- Not seen in any games yet, but validated with kernel tests.
This commit is contained in:
bunnei
2021-12-23 01:10:36 -08:00
parent b85f5b1332
commit 4e7a6639d2
4 changed files with 67 additions and 1 deletions
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32
src/core/hle/kernel/svc.cpp
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@ -164,6 +164,36 @@ static ResultCode SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_s
return result;
}
constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
switch (perm) {
case MemoryPermission::None:
case MemoryPermission::Read:
case MemoryPermission::ReadWrite:
return true;
default:
return false;
}
}
static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 size,
MemoryPermission perm) {
// Validate address / size.
R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
// Validate the permission.
R_UNLESS(IsValidSetMemoryPermission(perm), ResultInvalidNewMemoryPermission);
// Validate that the region is in range for the current process.
auto& page_table = system.Kernel().CurrentProcess()->PageTable();
R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
// Set the memory attribute.
return page_table.SetMemoryPermission(address, size, perm);
}
static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask,
u32 attribute) {
LOG_DEBUG(Kernel_SVC,
@ -2724,7 +2754,7 @@ static const FunctionDef SVC_Table_32[] = {
static const FunctionDef SVC_Table_64[] = {
{0x00, nullptr, "Unknown"},
{0x01, SvcWrap64<SetHeapSize>, "SetHeapSize"},
{0x02, nullptr, "SetMemoryPermission"},
{0x02, SvcWrap64<SetMemoryPermission>, "SetMemoryPermission"},
{0x03, SvcWrap64<SetMemoryAttribute>, "SetMemoryAttribute"},
{0x04, SvcWrap64<MapMemory>, "MapMemory"},
{0x05, SvcWrap64<UnmapMemory>, "UnmapMemory"},