protected void EmitDictionaryLookup(NodeFactory factory, ref ARMEmitter encoder, Register context, Register result, GenericLookupResult lookup, bool relocsOnly)
{
// INVARIANT: must not trash context register
// Find the generic dictionary slot
int dictionarySlot = 0;
if (!relocsOnly)
{
// The concrete slot won't be known until we're emitting data - don't ask for it in relocsOnly.
dictionarySlot = factory.GenericDictionaryLayout(_dictionaryOwner).GetSlotForEntry(lookup);
}
// Load the generic dictionary cell
encoder.EmitLDR(result, context, ((short)(dictionarySlot * factory.Target.PointerSize)));
switch (lookup.LookupResultReferenceType(factory))
{
case GenericLookupResultReferenceType.Indirect:
// Do another indirection
encoder.EmitLDR(result, result);
break;
case GenericLookupResultReferenceType.ConditionalIndirect:
// Test result, 0x1
// JEQ L1
// mov result, [result-1]
// L1:
throw new NotImplementedException();
default:
break;
}
}
protected void EmitDictionaryLookup(NodeFactory factory, ref X64Emitter encoder, Register context, Register result, GenericLookupResult lookup, bool relocsOnly)
{
// INVARIANT: must not trash context register
// Find the generic dictionary slot
int dictionarySlot = 0;
if (!relocsOnly)
{
// The concrete slot won't be known until we're emitting data - don't ask for it in relocsOnly.
dictionarySlot = factory.GenericDictionaryLayout(_dictionaryOwner).GetSlotForEntry(lookup);
}
// Load the generic dictionary cell
AddrMode loadEntry = new AddrMode(
context, null, dictionarySlot * factory.Target.PointerSize, 0, AddrModeSize.Int64);
encoder.EmitMOV(result, ref loadEntry);
// If there's any invalid entries, we need to test for them
//
// Only do this in relocsOnly to make it easier to weed out bugs - the _hasInvalidEntries
// flag can change over the course of compilation and the bad slot helper dependency
// should be reported by someone else - the system should not rely on it coming from here.
if (!relocsOnly && _hasInvalidEntries)
{
encoder.EmitCompareToZero(result);
encoder.EmitJE(GetBadSlotHelper(factory));
}
switch (lookup.LookupResultReferenceType(factory))
{
case GenericLookupResultReferenceType.Indirect:
// Do another indirection
loadEntry = new AddrMode(result, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(result, ref loadEntry);
break;
case GenericLookupResultReferenceType.ConditionalIndirect:
// Test result, 0x1
// JEQ L1
// mov result, [result-1]
// L1:
throw new NotImplementedException();
default:
break;
}
}