private static void EmitBranch(ILEmitterCtx context, Condition cond)
{
OpCodeBImm64 op = (OpCodeBImm64)context.CurrOp;
if (context.CurrBlock.Branch != null)
{
context.EmitCondBranch(context.GetLabel(op.Imm), cond);
if (context.CurrBlock.Next == null)
{
context.EmitStoreContext();
context.EmitLdc_I8(op.Position + 4);
context.Emit(OpCodes.Ret);
}
}
else
{
context.EmitStoreContext();
ILLabel lblTaken = new ILLabel();
context.EmitCondBranch(lblTaken, cond);
context.EmitLdc_I8(op.Position + 4);
context.Emit(OpCodes.Ret);
context.MarkLabel(lblTaken);
context.EmitLdc_I8(op.Imm);
context.Emit(OpCodes.Ret);
}
}
private static void EmitBranch(ILEmitterCtx context, OpCode ilOp)
{
OpCodeBImm64 op = (OpCodeBImm64)context.CurrOp;
if (context.CurrBlock.Next != null &&
context.CurrBlock.Branch != null)
{
context.Emit(ilOp, context.GetLabel(op.Imm));
}
else
{
context.EmitStoreState();
ILLabel lblTaken = new ILLabel();
context.Emit(ilOp, lblTaken);
context.EmitLdc_I8(op.Position + 4);
context.Emit(OpCodes.Ret);
context.MarkLabel(lblTaken);
context.EmitLdc_I8(op.Imm);
context.Emit(OpCodes.Ret);
}
}
public static void B(ILEmitterCtx context)
{
IOpCode32BImm op = (IOpCode32BImm)context.CurrOp;
if (context.CurrBlock.Branch != null)
{
context.Emit(OpCodes.Br, context.GetLabel(op.Imm));
}
else
{
context.EmitStoreContext();
context.EmitLdc_I8(op.Imm);
context.Emit(OpCodes.Ret);
}
}
public static void B(ILEmitterCtx context)
{
OpCodeBImmAl64 op = (OpCodeBImmAl64)context.CurrOp;
if (context.CurrBlock.Branch != null)
{
context.Emit(OpCodes.Br, context.GetLabel(op.Imm));
}
else
{
context.EmitStoreState();
context.EmitLdc_I8(op.Imm);
context.Emit(OpCodes.Ret);
}
}
private void TranslateTier1(CpuThreadState state, MemoryManager memory, long position)
{
(Block[] graph, Block root) = Decoder.DecodeSubroutine(_cache, state, memory, position);
string subName = GetSubroutineName(position);
ILEmitterCtx context = new ILEmitterCtx(_cache, graph, root, subName);
if (context.CurrBlock.Position != position)
{
context.Emit(OpCodes.Br, context.GetLabel(position));
}
do
{
context.EmitOpCode();
}while (context.AdvanceOpCode());
//Mark all methods that calls this method for ReJiting,
//since we can now call it directly which is faster.
if (_cache.TryGetSubroutine(position, out TranslatedSub oldSub))
{
foreach (long callerPos in oldSub.GetCallerPositions())
{
if (_cache.TryGetSubroutine(position, out TranslatedSub callerSub))
{
callerSub.MarkForReJit();
}
}
}
TranslatedSub subroutine = context.GetSubroutine();
subroutine.SetType(TranslatedSubType.SubTier1);
_cache.AddOrUpdate(position, subroutine, GetGraphInstCount(graph));
}