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Test MOVEs and add operand validation.

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This commit is contained in:
Thomas Harte 2022-04-19 16:31:03 -04:00
parent 76d7e0e1f8
commit de40fed248
2 changed files with 22 additions and 0 deletions
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18
InstructionSets/68k/Decoder.cpp
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@ -175,6 +175,24 @@ template <uint8_t op, bool validate> Preinstruction Predecoder<model>::validated
return Preinstruction();
}
switch(original.mode<1>()) {
default: return original;
case AddressingMode::ImmediateData:
case AddressingMode::ProgramCounterIndirectWithDisplacement:
case AddressingMode::ProgramCounterIndirectWithIndex8bitDisplacement:
case AddressingMode::None:
return Preinstruction();
}
// MOVE.
case OpT(Operation::MOVEb): case OpT(Operation::MOVEw): case OpT(Operation::MOVEl):
switch(original.mode<0>()) {
default: break;
case AddressingMode::None:
return Preinstruction();
}
switch(original.mode<1>()) {
default: return original;

4
OSBindings/Mac/Clock SignalTests/m68kDecoderTests.mm
View File

@ -112,6 +112,10 @@ template <int index> NSString *operand(Preinstruction instruction) {
case Operation::SUBXw: instruction = @"SUBX.w"; break;
case Operation::SUBXl: instruction = @"SUBX.l"; break;
case Operation::MOVEb: instruction = @"MOVE.b"; break;
case Operation::MOVEw: instruction = @"MOVE.w"; break;
case Operation::MOVEl: instruction = @"MOVE.l"; break;
// For now, skip any unmapped operations.
default: continue;
}