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HLE/SVC: Implement UnmapMemoryBlock.

This implementation will need to be (almost completely) changed when we implement multiprocess support.
This commit is contained in:
Subv 2015-12-31 09:46:32 -05:00
parent 82087672b7
commit d90d5a0ee6
5 changed files with 60 additions and 5 deletions

View file

@ -188,6 +188,10 @@ template<ResultCode func(s64*, Handle, u32)> void Wrap() {
FuncReturn(retval);
}
template<ResultCode func(Handle, u32)> void Wrap() {
FuncReturn(func(PARAM(0), PARAM(1)).raw);
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Function wrappers that return type u32

View file

@ -39,6 +39,12 @@ ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
}
// TODO(Subv): Return E0E01BEE when permissions and other_permissions don't
// match what was specified when the memory block was created.
// TODO(Subv): Return E0E01BEE when address should be 0.
// Note: Find out when that's the case.
if (fixed_address != 0) {
if (address != 0 && address != fixed_address) {
LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s: fixed_addres is 0x%08X!",
@ -74,6 +80,21 @@ ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
return RESULT_SUCCESS;
}
ResultCode SharedMemory::Unmap(VAddr address) {
if (base_address == 0) {
// TODO(Subv): Verify what actually happens when you want to unmap a memory block that
// was originally mapped with address = 0
return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
}
if (base_address != address)
return ResultCode(ErrorDescription::WrongAddress, ErrorModule::OS, ErrorSummary::InvalidState, ErrorLevel::Usage);
base_address = 0;
return RESULT_SUCCESS;
}
u8* SharedMemory::GetPointer(u32 offset) {
if (base_address != 0)
return Memory::GetPointer(base_address + offset);

View file

@ -52,6 +52,13 @@ public:
*/
ResultCode Map(VAddr address, MemoryPermission permissions, MemoryPermission other_permissions);
/**
* Unmaps a shared memory block from the specified address in system memory
* @param address Address in system memory where the shared memory block is mapped
* @return Result code of the unmap operation
*/
ResultCode Unmap(VAddr address);
/**
* Gets a pointer to the shared memory block
* @param offset Offset from the start of the shared memory block to get pointer

View file

@ -18,6 +18,7 @@
/// Detailed description of the error. This listing is likely incomplete.
enum class ErrorDescription : u32 {
Success = 0,
WrongAddress = 53,
FS_NotFound = 100,
FS_NotFormatted = 340, ///< This is used by the FS service when creating a SaveData archive
InvalidSection = 1000,

View file

@ -161,6 +161,8 @@ static ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 o
LOG_TRACE(Kernel_SVC, "called memblock=0x%08X, addr=0x%08X, mypermissions=0x%08X, otherpermission=%d",
handle, addr, permissions, other_permissions);
// TODO(Subv): The same process that created a SharedMemory object can not map it in its own address space
SharedPtr<SharedMemory> shared_memory = Kernel::g_handle_table.Get<SharedMemory>(handle);
if (shared_memory == nullptr)
return ERR_INVALID_HANDLE;
@ -175,13 +177,27 @@ static ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 o
case MemoryPermission::WriteExecute:
case MemoryPermission::ReadWriteExecute:
case MemoryPermission::DontCare:
shared_memory->Map(addr, permissions_type,
return shared_memory->Map(addr, permissions_type,
static_cast<MemoryPermission>(other_permissions));
break;
default:
LOG_ERROR(Kernel_SVC, "unknown permissions=0x%08X", permissions);
}
return RESULT_SUCCESS;
return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
}
static ResultCode UnmapMemoryBlock(Handle handle, u32 addr) {
using Kernel::SharedMemory;
LOG_TRACE(Kernel_SVC, "called memblock=0x%08X, addr=0x%08X", handle, addr);
// TODO(Subv): Return E0A01BF5 if the address is not in the application's heap
SharedPtr<SharedMemory> shared_memory = Kernel::g_handle_table.Get<SharedMemory>(handle);
if (shared_memory == nullptr)
return ERR_INVALID_HANDLE;
return shared_memory->Unmap(addr);
}
/// Connect to an OS service given the port name, returns the handle to the port to out
@ -765,7 +781,13 @@ static s64 GetSystemTick() {
static ResultCode CreateMemoryBlock(Handle* out_handle, u32 addr, u32 size, u32 my_permission,
u32 other_permission) {
using Kernel::SharedMemory;
// TODO(Subv): Implement this function
if (size % Memory::PAGE_SIZE != 0)
return ResultCode(ErrorDescription::MisalignedSize, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
// TODO(Subv): Return E0A01BF5 if the address is not in the application's heap
// TODO(Subv): Implement this function properly
using Kernel::MemoryPermission;
SharedPtr<SharedMemory> shared_memory = SharedMemory::Create(size,
@ -912,7 +934,7 @@ static const FunctionDef SVC_Table[] = {
{0x1D, HLE::Wrap<ClearTimer>, "ClearTimer"},
{0x1E, HLE::Wrap<CreateMemoryBlock>, "CreateMemoryBlock"},
{0x1F, HLE::Wrap<MapMemoryBlock>, "MapMemoryBlock"},
{0x20, nullptr, "UnmapMemoryBlock"},
{0x20, HLE::Wrap<UnmapMemoryBlock>, "UnmapMemoryBlock"},
{0x21, HLE::Wrap<CreateAddressArbiter>, "CreateAddressArbiter"},
{0x22, HLE::Wrap<ArbitrateAddress>, "ArbitrateAddress"},
{0x23, HLE::Wrap<CloseHandle>, "CloseHandle"},