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90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
//
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// DingusdevPowerPCTests.mm
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// Clock Signal
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//
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// Created by Thomas Harte on 18/03/2022.
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// Copyright 2022 Thomas Harte. All rights reserved.
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//
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#import <XCTest/XCTest.h>
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#include <cstdlib>
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#include "../../../InstructionSets/PowerPC/Decoder.hpp"
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namespace {
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using Operation = InstructionSet::PowerPC::Operation;
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using Instruction = InstructionSet::PowerPC::Instruction;
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}
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@interface DingusdevPowerPCTests : XCTestCase
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@end
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@implementation DingusdevPowerPCTests
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- (void)testDecoding {
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NSData *const testData =
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[NSData dataWithContentsOfURL:
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[[NSBundle bundleForClass:[self class]]
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URLForResource:@"ppcdisasmtest"
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withExtension:@"csv"
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subdirectory:@"dingusdev PowerPC tests"]];
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NSString *const wholeFile = [[NSString alloc] initWithData:testData encoding:NSUTF8StringEncoding];
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NSArray<NSString *> *const lines = [wholeFile componentsSeparatedByString:@"\n"];
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InstructionSet::PowerPC::Decoder decoder(InstructionSet::PowerPC::Model::MPC601);
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for(NSString *const line in lines) {
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// Ignore empty lines and comments.
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if([line length] == 0) {
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continue;
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}
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if([line characterAtIndex:0] == '#') {
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continue;
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}
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NSArray<NSString *> *const columns = [line componentsSeparatedByString:@","];
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// Column 1: address.
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const uint32_t address = uint32_t(std::strtol([columns[0] UTF8String], 0, 16));
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const uint32_t opcode = uint32_t(std::strtol([columns[1] UTF8String], 0, 16));
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NSString *const operation = columns[2];
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const auto instruction = decoder.decode(opcode);
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switch(instruction.operation) {
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default:
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NSAssert(FALSE, @"Didn't handle %@", line);
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break;
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case Operation::bcx: {
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switch(instruction.bo()) {
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case 0x14: case 0x15: XCTAssertEqualObjects(operation, @"b"); break;
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default:
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NSLog(@"No opcode tested for bcx with bo %02x", instruction.bo());
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break;
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}
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const uint32_t destination = uint32_t(std::strtol([columns[3] UTF8String], 0, 16));
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const uint32_t decoded_destination = instruction.bd() + address;
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XCTAssertEqual(decoded_destination, destination);
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} break;
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case Operation::bx: {
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switch((instruction.aa() ? 2 : 0) | (instruction.lk() ? 1 : 0)) {
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case 0: XCTAssertEqualObjects(operation, @"b"); break;
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case 1: XCTAssertEqualObjects(operation, @"bl"); break;
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case 2: XCTAssertEqualObjects(operation, @"ba"); break;
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case 3: XCTAssertEqualObjects(operation, @"bla"); break;
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}
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const uint32_t destination = uint32_t(std::strtol([columns[3] UTF8String], 0, 16));
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const uint32_t decoded_destination =
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instruction.li() + (instruction.aa() ? 0 : address);
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XCTAssertEqual(decoded_destination, destination);
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} break;
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}
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}
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}
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@end
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