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Attempt to randomise and test register contents.

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This commit is contained in:
Thomas Harte 2022-06-08 15:12:47 -04:00
parent ab35016aae
commit fd1955e15b
1 changed files with 35 additions and 1 deletions
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36
OSBindings/Mac/Clock SignalTests/68000OldVsNew.mm
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@ -214,7 +214,7 @@ template <typename M68000> struct Tester {
bus_handler.instructions = instructions;
try {
processor.run_for(HalfCycles::max());
processor.run_for(HalfCycles(5000));
} catch (const HarmlessStopException &) {}
}
@ -266,10 +266,25 @@ template <typename M68000> struct Tester {
// Test each 1000 times.
for(int test = 0; test < 1000; test++) {
// Establish with certainty the initial memory state.
random_store.clear();
newTester->reset_with_opcode(c);
oldTester->reset_with_opcode(c);
// Generate a random initial register state.
auto oldState = oldTester->processor.get_state();
auto newState = newTester->processor.get_state();
for(int c = 0; c < 8; c++) {
oldState.data[c] = newState.registers.data[c] = rand() ^ (rand() << 1);
if(c != 7) oldState.address[c] = newState.registers.address[c] = rand() << 1;
}
oldState.status = newState.registers.status = rand() | (1 << 13);
oldState.user_stack_pointer = newState.registers.user_stack_pointer = rand() << 1;
oldTester->processor.set_state(oldState);
newTester->processor.set_state(newState);
// Run a single instruction.
newTester->run_instructions(1);
oldTester->run_instructions(1);
@ -300,6 +315,25 @@ template <typename M68000> struct Tester {
++newIt;
++oldIt;
}
// Compare registers.
oldState = oldTester->processor.get_state();
newState = newTester->processor.get_state();
bool mismatch = false;
for(int c = 0; c < 8; c++) {
mismatch |= oldState.data[c] != newState.registers.data[c];
if(c != 7) mismatch |= oldState.address[c] != newState.registers.address[c];
}
mismatch |= oldState.status != newState.registers.status;
mismatch |= oldState.program_counter != newState.registers.program_counter;
mismatch |= oldState.user_stack_pointer != newState.registers.user_stack_pointer;
mismatch |= oldState.supervisor_stack_pointer != newState.registers.supervisor_stack_pointer;
if(mismatch) {
printf("Registers don't match after %s, test %d\n", instruction.to_string().c_str(), test);
// TODO: more detail here!
}
}
}
}