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ARMeilleure: Move TPIDR_EL0 and TPIDRRO_EL0 to NativeContext (#4661)

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* ARMeilleure: Move TPIDR_EL0 and TPIDRRO_EL0 to NativeContext

Some games access these system registers several tens of thousands of times in a second from many different threads. While this isn't really crippling, it is a lot of wasted time spent in a reverse pinvoke transition.

Example games are Pokemon Scarlet/Violet and BOTW. These games have a lot of different potential bottlenecks so it's unlikely you will see a consistent improvement, but it definitely disappears from the cpu profile.

* Remove unreachable code.

* Add ulong conversion for offsets

* Nit
This commit is contained in:
riperiperi 2023-04-11 07:55:04 +01:00 • committed by GitHub
parent 915d6d044c
commit 9ef94c8292
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 101 additions and 58 deletions
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43
ARMeilleure/Instructions/InstEmitSystem.cs
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@ -33,8 +33,8 @@ namespace ARMeilleure.Instructions
case 0b11_011_0100_0010_000: EmitGetNzcv(context); return;
case 0b11_011_0100_0100_000: EmitGetFpcr(context); return;
case 0b11_011_0100_0100_001: EmitGetFpsr(context); return;
case 0b11_011_1101_0000_010: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrEl0)); break;
case 0b11_011_1101_0000_011: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrroEl0)); break;
case 0b11_011_1101_0000_010: EmitGetTpidrEl0(context); return;
case 0b11_011_1101_0000_011: EmitGetTpidrroEl0(context); return;
case 0b11_011_1110_0000_000: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntfrqEl0)); break;
case 0b11_011_1110_0000_001: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntpctEl0)); break;
case 0b11_011_1110_0000_010: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntvctEl0)); break;
@ -49,19 +49,15 @@ namespace ARMeilleure.Instructions
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;
MethodInfo info;
switch (GetPackedId(op))
{
case 0b11_011_0100_0010_000: EmitSetNzcv(context); return;
case 0b11_011_0100_0100_000: EmitSetFpcr(context); return;
case 0b11_011_0100_0100_001: EmitSetFpsr(context); return;
case 0b11_011_1101_0000_010: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.SetTpidrEl0)); break;
case 0b11_011_1101_0000_010: EmitSetTpidrEl0(context); return;
default: throw new NotImplementedException($"Unknown MSR 0x{op.RawOpCode:X8} at 0x{op.Address:X16}.");
}
context.Call(info, GetIntOrZR(context, op.Rt));
}
public static void Nop(ArmEmitterContext context)
@ -165,6 +161,28 @@ namespace ARMeilleure.Instructions
SetIntOrZR(context, op.Rt, fpsr);
}
private static void EmitGetTpidrEl0(ArmEmitterContext context)
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;
Operand nativeContext = context.LoadArgument(OperandType.I64, 0);
Operand result = context.Load(OperandType.I64, context.Add(nativeContext, Const((ulong)NativeContext.GetTpidrEl0Offset())));
SetIntOrZR(context, op.Rt, result);
}
private static void EmitGetTpidrroEl0(ArmEmitterContext context)
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;
Operand nativeContext = context.LoadArgument(OperandType.I64, 0);
Operand result = context.Load(OperandType.I64, context.Add(nativeContext, Const((ulong)NativeContext.GetTpidrroEl0Offset())));
SetIntOrZR(context, op.Rt, result);
}
private static void EmitSetNzcv(ArmEmitterContext context)
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;
@ -215,5 +233,16 @@ namespace ARMeilleure.Instructions
context.UpdateArmFpMode();
}
private static void EmitSetTpidrEl0(ArmEmitterContext context)
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;
Operand value = GetIntOrZR(context, op.Rt);
Operand nativeContext = context.LoadArgument(OperandType.I64, 0);
context.Store(context.Add(nativeContext, Const((ulong)NativeContext.GetTpidrEl0Offset())), value);
}
}
}