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Proceed to unimplemented TST.

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This commit is contained in:
Thomas Harte 2022-05-06 11:33:57 -04:00
parent d478a1b448
commit 9c266d4316
4 changed files with 38 additions and 24 deletions
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1
InstructionSets/M68k/Executor.hpp
View File

@ -53,6 +53,7 @@ template <Model model, typename BusHandler> class Executor {
template <typename IntT> void movep(Preinstruction instruction, uint32_t source, uint32_t dest);
template <typename IntT> void movem_toM(Preinstruction instruction, uint32_t source, uint32_t dest);
template <typename IntT> void movem_toR(Preinstruction instruction, uint32_t source, uint32_t dest);
void pea(uint32_t address);
// TODO: ownership of this shouldn't be here.
struct Registers {

6
InstructionSets/M68k/Implementation/ExecutorImplementation.hpp
View File

@ -395,6 +395,12 @@ void Executor<model, BusHandler>::unlink(uint32_t &address) {
sp().l += 4;
}
template <Model model, typename BusHandler>
void Executor<model, BusHandler>::pea(uint32_t address) {
sp().l -= 4;
bus_handler_.template write<uint32_t>(sp().l, address);
}
template <Model model, typename BusHandler>
template <typename IntT>
void Executor<model, BusHandler>::movep(Preinstruction instruction, uint32_t source, uint32_t dest) {

48
InstructionSets/M68k/Implementation/PerformImplementation.hpp
View File

@ -314,17 +314,17 @@ template <
negative, overflow and carry.
*/
case Operation::CLRb:
dest.b = 0;
src.b = 0;
status.negative_flag_ = status.overflow_flag_ = status.carry_flag_ = status.zero_result_ = 0;
break;
case Operation::CLRw:
dest.w = 0;
src.w = 0;
status.negative_flag_ = status.overflow_flag_ = status.carry_flag_ = status.zero_result_ = 0;
break;
case Operation::CLRl:
dest.l = 0;
src.l = 0;
status.negative_flag_ = status.overflow_flag_ = status.carry_flag_ = status.zero_result_ = 0;
break;
@ -440,7 +440,7 @@ template <
break;
case Operation::MOVEfromSR:
dest.w = status.status();
src.w = status.status();
break;
case Operation::MOVEtoCCR:
@ -697,9 +697,9 @@ template <
*/
case Operation::NEGb: {
const int destination = 0;
const int source = dest.b;
const int source = src.b;
const auto result = destination - source;
dest.b = uint8_t(result);
src.b = uint8_t(result);
status.zero_result_ = result & 0xff;
status.extend_flag_ = status.carry_flag_ = decltype(status.carry_flag_)(result & ~0xff);
@ -709,9 +709,9 @@ template <
case Operation::NEGw: {
const int destination = 0;
const int source = dest.w;
const int source = src.w;
const auto result = destination - source;
dest.w = uint16_t(result);
src.w = uint16_t(result);
status.zero_result_ = result & 0xffff;
status.extend_flag_ = status.carry_flag_ = decltype(status.carry_flag_)(result & ~0xffff);
@ -721,9 +721,9 @@ template <
case Operation::NEGl: {
const uint64_t destination = 0;
const uint64_t source = dest.l;
const uint64_t source = src.l;
const auto result = destination - source;
dest.l = uint32_t(result);
src.l = uint32_t(result);
status.zero_result_ = uint_fast32_t(result);
status.extend_flag_ = status.carry_flag_ = result >> 32;
@ -735,10 +735,10 @@ template <
NEGXs: NEG, with extend.
*/
case Operation::NEGXb: {
const int source = dest.b;
const int source = src.b;
const int destination = 0;
const auto result = destination - source - (status.extend_flag_ ? 1 : 0);
dest.b = uint8_t(result);
src.b = uint8_t(result);
status.zero_result_ |= result & 0xff;
status.extend_flag_ = status.carry_flag_ = decltype(status.carry_flag_)(result & ~0xff);
@ -747,10 +747,10 @@ template <
} break;
case Operation::NEGXw: {
const int source = dest.w;
const int source = src.w;
const int destination = 0;
const auto result = destination - source - (status.extend_flag_ ? 1 : 0);
dest.w = uint16_t(result);
src.w = uint16_t(result);
status.zero_result_ |= result & 0xffff;
status.extend_flag_ = status.carry_flag_ = decltype(status.carry_flag_)(result & ~0xffff);
@ -759,10 +759,10 @@ template <
} break;
case Operation::NEGXl: {
const uint64_t source = dest.l;
const uint64_t source = src.l;
const uint64_t destination = 0;
const auto result = destination - source - (status.extend_flag_ ? 1 : 0);
dest.l = uint32_t(result);
src.l = uint32_t(result);
status.zero_result_ |= uint_fast32_t(result);
status.extend_flag_ = status.carry_flag_ = result >> 32;
@ -838,22 +838,22 @@ template <
// NOTs: take the logical inverse, affecting the negative and zero flags.
case Operation::NOTb:
dest.b ^= 0xff;
status.zero_result_ = dest.b;
src.b ^= 0xff;
status.zero_result_ = src.b;
status.negative_flag_ = status.zero_result_ & 0x80;
status.overflow_flag_ = status.carry_flag_ = 0;
break;
case Operation::NOTw:
dest.w ^= 0xffff;
status.zero_result_ = dest.w;
src.w ^= 0xffff;
status.zero_result_ = src.w;
status.negative_flag_ = status.zero_result_ & 0x8000;
status.overflow_flag_ = status.carry_flag_ = 0;
break;
case Operation::NOTl:
dest.l ^= 0xffffffff;
status.zero_result_ = dest.l;
src.l ^= 0xffffffff;
status.zero_result_ = src.l;
status.negative_flag_ = status.zero_result_ & 0x80000000;
status.overflow_flag_ = status.carry_flag_ = 0;
break;
@ -1200,6 +1200,10 @@ template <
flow_controller.template movem_toM<uint16_t>(instruction, src.l, dest.l);
break;
case Operation::PEA:
flow_controller.pea(src.l);
break;
/*
RTE and RTR share an implementation.
*/

7
OSBindings/Mac/Clock SignalTests/68000ComparativeTests.mm
View File

@ -47,6 +47,8 @@
// movep
// moveq
// mulu_muls
// neg_not
// negx_clr
// Issues to fix:
//
@ -68,6 +70,7 @@
// eor_and_or (which invokes BCD)
// exg (also BCD)
// chk
// nbcd_pea (BCD)
//
// And because possibly my old CHK is pushing the wrong program counter?
//
@ -75,8 +78,8 @@
- (void)setUp {
// To limit tests run to a subset of files and/or of tests, uncomment and fill in below.
_fileSet = [NSSet setWithArray:@[@"nbcd_pea.json"]];
// _testSet = [NSSet setWithArray:@[@"MOVEM 0098 (0)"]];
_fileSet = [NSSet setWithArray:@[@"swap.json", @"tst.json"]];
// _testSet = [NSSet setWithArray:@[@"NEGX 00c0"]];
// _fileSet = [NSSet setWithArray:@[@"jmp_jsr.json"]];
// _testSet = [NSSet setWithArray:@[@"CHK 41a8"]];
}