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Implements all MOVE Dn, Dn.

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This commit is contained in:
Thomas Harte 2019-03-16 23:14:18 -04:00
parent 58f035e31a
commit c3ebbfb10e
1 changed files with 29 additions and 3 deletions
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32
Processors/68000/Implementation/68000Storage.cpp
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@ -244,9 +244,9 @@ struct ProcessorStorageConstructor {
{0xff00, 0x0600, Operation::ADD, Decoder::DataSizeModeQuick}, // 4-11 (p115)
{0x1000, 0xf000, Operation::MOVEb, Decoder::RegisterModeModeRegister}, // 4-116 (p220)
{0x3000, 0xf000, Operation::MOVEw, Decoder::RegisterModeModeRegister}, // 4-116 (p220)
{0x2000, 0xf000, Operation::MOVEl, Decoder::RegisterModeModeRegister}, // 4-116 (p220)
{0xf000, 0x1000, Operation::MOVEb, Decoder::RegisterModeModeRegister}, // 4-116 (p220)
{0xf000, 0x2000, Operation::MOVEl, Decoder::RegisterModeModeRegister}, // 4-116 (p220)
{0xf000, 0x3000, Operation::MOVEw, Decoder::RegisterModeModeRegister}, // 4-116 (p220)
};
std::vector<size_t> micro_op_pointers(65536, std::numeric_limits<size_t>::max());
@ -263,6 +263,7 @@ struct ProcessorStorageConstructor {
const auto micro_op_start = storage_.all_micro_ops_.size();
switch(mapping.decoder) {
// Decodes the format used by ABCD and SBCD.
case Decoder::Decimal: {
const int destination = (instruction >> 9) & 7;
const int source = instruction & 7;
@ -286,6 +287,31 @@ struct ProcessorStorageConstructor {
}
} break;
// Decodes the format used by all the MOVEs.
case Decoder::RegisterModeModeRegister: {
const int source_register = instruction & 7;
const int source_mode = (instruction >> 3) & 7;
const int destination_mode = (instruction >> 6) & 7;
const int destination_register = (instruction >> 9) & 7;
if(!source_mode) {
storage_.instructions[instruction].source = &storage_.data_[source_register];
}
if(!destination_mode) {
storage_.instructions[instruction].destination = &storage_.data_[destination_register];
}
// TODO: all other types of mode.
if(!destination_mode && !source_mode) {
storage_.all_micro_ops_.emplace_back(Action::PerformOperation, &arbitrary_base + assemble_program("np"));
storage_.all_micro_ops_.emplace_back();
} else {
continue;
}
} break;
default:
std::cerr << "Unhandled decoder " << int(mapping.decoder) << std::endl;
continue;