ryujinx/ARMeilleure/Memory/MemoryManagerPal.cs
gdkchan f77694e4f7
Implement a new physical memory manager and replace DeviceMemory (#856)
* Implement a new physical memory manager and replace DeviceMemory

* Proper generic constraints

* Fix debug build

* Add memory tests

* New CPU memory manager and general code cleanup

* Remove host memory management from CPU project, use Ryujinx.Memory instead

* Fix tests

* Document exceptions on MemoryBlock

* Fix leak on unix memory allocation

* Proper disposal of some objects on tests

* Fix JitCache not being set as initialized

* GetRef without checks for 8-bits and 16-bits CAS

* Add MemoryBlock destructor

* Throw in separate method to improve codegen

* Address PR feedback

* QueryModified improvements

* Fix memory write tracking not marking all pages as modified in some cases

* Simplify MarkRegionAsModified

* Remove XML doc for ghost param

* Add back optimization to avoid useless buffer updates

* Add Ryujinx.Cpu project, move MemoryManager there and remove MemoryBlockWrapper

* Some nits

* Do not perform address translation when size is 0

* Address PR feedback and format NativeInterface class

* Remove ghost parameter description

* Update Ryujinx.Cpu to .NET Core 3.1

* Address PR feedback

* Fix build

* Return a well defined value for GetPhysicalAddress with invalid VA, and do not return unmapped ranges as modified

* Typo
2020-05-04 08:54:50 +10:00

76 lines
2.2 KiB
C#

using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.State;
using ARMeilleure.Translation;
namespace ARMeilleure.Memory
{
static class MemoryManagerPal
{
private delegate V128 CompareExchange128(ref V128 location, V128 expected, V128 desired);
private static CompareExchange128 _compareExchange128;
private static object _lock;
static MemoryManagerPal()
{
_lock = new object();
}
public static V128 AtomicLoad128(ref V128 location)
{
return GetCompareAndSwap128()(ref location, V128.Zero, V128.Zero);
}
public static V128 CompareAndSwap128(ref V128 location, V128 expected, V128 desired)
{
return GetCompareAndSwap128()(ref location, expected, desired);
}
private static CompareExchange128 GetCompareAndSwap128()
{
if (_compareExchange128 == null)
{
GenerateCompareAndSwap128();
}
return _compareExchange128;
}
private static void GenerateCompareAndSwap128()
{
lock (_lock)
{
if (_compareExchange128 != null)
{
return;
}
EmitterContext context = new EmitterContext();
Operand address = context.LoadArgument(OperandType.I64, 0);
Operand expected = context.LoadArgument(OperandType.V128, 1);
Operand desired = context.LoadArgument(OperandType.V128, 2);
Operand result = context.CompareAndSwap(address, expected, desired);
context.Return(result);
ControlFlowGraph cfg = context.GetControlFlowGraph();
OperandType[] argTypes = new OperandType[]
{
OperandType.I64,
OperandType.V128,
OperandType.V128
};
_compareExchange128 = Compiler.Compile<CompareExchange128>(
cfg,
argTypes,
OperandType.V128,
CompilerOptions.HighCq);
}
}
}
}