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Correct decoding of stwcx. and stdcx.

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This commit is contained in:
Thomas Harte
2022-04-01 20:37:36 -04:00
parent d5f7650ac1
commit d5967f7834
3 changed files with 54 additions and 8 deletions
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InstructionSets/PowerPC/Decoder.cpp
+4 -4
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@@ -317,15 +317,15 @@ Instruction Decoder::decode(uint32_t opcode) {
}
// stwcx. and stdcx.
switch(opcode & 0b111111'00'00000000'000'111111111'1){
case 0b011111'00'00000000'00000'0010010110'1: return Instruction(Operation::stwcx_, opcode);
case 0b011111'00'00000000'00000'0011010110'1:
switch(opcode & 0b111111'0000'0000'0000'0000'111111111'1) {
case 0b011111'0000'0000'0000'0000'010010110'1: return Instruction(Operation::stwcx_, opcode);
case 0b011111'0000'0000'0000'0000'011010110'1:
if(is64bit(model_)) return Instruction(Operation::stdcx_, opcode);
return Instruction(opcode);
}
// std and stdu
switch(opcode & 0b111111'00'00000000'00000000'000000'11){
switch(opcode & 0b111111'00'00000000'00000000'000000'11) {
case 0b111110'00'00000000'00000000'000000'00: return Instruction(Operation::std, opcode);
case 0b111110'00'00000000'00000000'000000'01:
if(is64bit(model_)) return Instruction(Operation::stdu, opcode);