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Imports CMP tests, and fixes CMP.l timing.

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This commit is contained in:
Thomas Harte 2019-06-26 22:02:04 -04:00
parent dbdbea85c2
commit 538aecb46e
2 changed files with 77 additions and 2 deletions
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72
OSBindings/Mac/Clock SignalTests/68000Tests.mm
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@ -1981,6 +1981,78 @@ class CPU::MC68000::ProcessorStorageTests {
XCTAssertEqual(20, _machine->get_cycle_count());
}
// MARK: CMP
- (void)performCMPb:(uint16_t)opcode expectedFlags:(uint16_t)flags {
_machine->set_program({
opcode
});
auto state = _machine->get_processor_state();
state.data[1] = 0x1234567f;
state.data[2] = 0x12345680;
_machine->set_processor_state(state);
_machine->run_for_instructions(1);
state = _machine->get_processor_state();
XCTAssertEqual(state.data[1], 0x1234567f);
XCTAssertEqual(state.data[2], 0x12345680);
XCTAssertEqual(state.status & Flag::ConditionCodes, flags);
XCTAssertEqual(4, _machine->get_cycle_count());
}
- (void)testCMPb_D1D2 {
[self performCMPb:0xb401 expectedFlags:Flag::Overflow]; // CMP.b D1, D2
}
- (void)testCMPb_D2D1 {
[self performCMPb:0xb202 expectedFlags:Flag::Overflow | Flag::Negative | Flag::Carry]; // CMP.b D2, D1
}
- (void)performCMPwd1:(uint32_t)d1 d2:(uint32_t)d2 expectedFlags:(uint16_t)flags {
_machine->set_program({
0xb242 // CMP.W D2, D1
});
auto state = _machine->get_processor_state();
state.data[1] = d1;
state.data[2] = d2;
_machine->set_processor_state(state);
_machine->run_for_instructions(1);
state = _machine->get_processor_state();
XCTAssertEqual(state.data[1], d1);
XCTAssertEqual(state.data[2], d2);
XCTAssertEqual(state.status & Flag::ConditionCodes, flags);
XCTAssertEqual(4, _machine->get_cycle_count());
}
- (void)testCMPw_8004v7002 {
[self performCMPwd1:0x12347002 d2:0x12348004 expectedFlags:Flag::Overflow | Flag::Negative | Flag::Carry];
}
- (void)testCMPw_6666v5555 {
[self performCMPwd1:0x55555555 d2:0x66666666 expectedFlags:Flag::Negative | Flag::Carry];
}
- (void)testCMPl {
_machine->set_program({
0xb282 // CMP.l D2, D1
});
auto state = _machine->get_processor_state();
state.data[1] = 0x12347002;
state.data[2] = 0x12348004;
_machine->set_processor_state(state);
_machine->run_for_instructions(1);
state = _machine->get_processor_state();
XCTAssertEqual(state.data[1], 0x12347002);
XCTAssertEqual(state.data[2], 0x12348004);
XCTAssertEqual(state.status & Flag::ConditionCodes, Flag::Negative | Flag::Carry);
XCTAssertEqual(6, _machine->get_cycle_count());
}
// MARK: CMPA
- (void)performCMPAld1:(uint32_t)d1 a2:(uint32_t)a2 {

7
Processors/68000/Implementation/68000Storage.cpp
View File

@ -2027,12 +2027,15 @@ struct ProcessorStorageConstructor {
default: continue;
case bw(Dn): // CMP.bw Dn, Dn
case l(Dn): // CMP.l Dn, Dn
case bw(An): // CMP.w An, Dn
case l(An): // CMP.l An, Dn
op(Action::PerformOperation, seq("np"));
break;
case l(Dn): // CMP.l Dn, Dn
case l(An): // CMP.l An, Dn
op(Action::PerformOperation, seq("np n"));
break;
case bw(Ind): // CMP.bw (An), Dn
case bw(PostInc): // CMP.bw (An)+, Dn
op(Action::None, seq("nr np", { a(ea_register) }, !is_byte_access));