Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import * as fs from 'fs';
import {exit} from 'process';
import {
process_instruction,
setFUNC,
setIMM,
setOPCODE,
setRD,
setRS,
setRT,
setSHAMT,
setTARGET,
} from '@simulator/run';
import {
bcolors,
currentState,
DEBUG,
DEBUG_SET,
INST_INFO,
instAddOne,
instruction,
Iinstruction,
memData,
memStack,
memRegions,
MIPS_REGS,
MEM_GROW_UP,
MEM_DUMP_SET,
MEM_NREGIONS,
MEM_DATA_START,
MEM_TEXT_START,
pType,
RUN_BIT,
SYMBOL_TABLE,
SymbolTableType,
} from '@utils/constants';
export interface simulatorOutputType {
readonly PC: string;
readonly registers: {[key: string]: string};
readonly dataSection: {[key: string]: string} | Record<string, never>;
readonly stackSection: {[key: string]: string} | Record<string, never>;
}
export interface IBinaryData {
readonly lineNumber: number;
readonly data: string;
}
export interface IMapDetail {
readonly key: number;
readonly assembly: string;
readonly binary: IBinaryData[];
}
export function parseInstr(buffer: string, index: number): instruction {
const instr: instruction = new instruction();
setOPCODE(instr, fromBinary(buffer.slice(0, 6)));
// R type
if (instr.opcode === 0x0) {
setRS(instr, fromBinary(buffer.slice(6, 11)));
setRT(instr, fromBinary(buffer.slice(11, 16)));
setRD(instr, fromBinary(buffer.slice(16, 21)));
setSHAMT(instr, fromBinary(buffer.slice(21, 26)));
setFUNC(instr, fromBinary(buffer.slice(26, 32)));
}
// J type
else if (instr.opcode === 0x2 || instr.opcode === 0x3) {
setTARGET(instr, fromBinary(buffer.slice(6, 32)));
}
// I type
else {
setRS(instr, fromBinary(buffer.slice(6, 11)));
setRT(instr, fromBinary(buffer.slice(11, 16)));
setIMM(instr, fromBinary(buffer.slice(16, 32)));
}
memWrite(MEM_TEXT_START + index, fromBinary(buffer));
return instr;
}
export function parseData(buffer: string, index: number) {
//[TODO] Implement this function
memWrite(MEM_DATA_START + index, fromBinary(buffer));
return;
}
export function printParseResult(
INST_INFO: Iinstruction[],
textSize: number,
dataSize: number,
) {
console.log('Instruction Information');
/*
TYPE I
0x8: (0x001000)ADDI
0x9: (0x001001)ADDIU
0xc: (0x001100)ANDI
0x4: (0x000100)BEQ
0x5: (0x000101)BNE
0x25: (0x011001)LHU
0xf: (0x001111)LUI
0x23: (0x100011)LW
0xd: (0x001101)ORI
0xa: (0x001010)SLTI
0xb: (0x001011)SLTIU
0x29: (0x011101)SH
0x2b: (0x101011)SW
TYPE R
0x0: (0x000000)ADD, ADDU, AND, NOR, OR, SLT, SLTU, SLL, SRL, SUB, SUBU if JR
TYPE J
0x2: (0x000010)J
0x3: (0x000011)JAL
*/
const TypeIList = [
0x8, 0x9, 0xc, 0x4, 0x5, 0x25, 0xf, 0x23, 0xd, 0xa, 0xb, 0x29, 0x2b,
];
const TypeRList = [0x0];
const TypeJList = [0x2, 0x3];
for (let i = 0; i < textSize / 4; i++) {
console.log(`INST_INFO[${i}].value : 0x${INST_INFO[i].value.toString(16)}`);
console.log(`INST_INFO[${i}].opcode : ${INST_INFO[i].opcode}`);
if (INST_INFO[i].opcode in TypeIList) {
console.log(`INST_INFO[${i}].rs : ${INST_INFO[i].rs}`);
console.log(`INST_INFO[${i}].rt : ${INST_INFO[i].rt}`);
console.log(`INST_INFO[${i}].imm : ${INST_INFO[i].imm}`);
} else if (INST_INFO[i].opcode in TypeRList) {
console.log(`INST_INFO[${i}].funcCode : ${INST_INFO[i].funcCode}`);
console.log(`INST_INFO[${i}].rs : ${INST_INFO[i].rs}`);
console.log(`INST_INFO[${i}].rt : ${INST_INFO[i].rt}`);
console.log(`INST_INFO[${i}].rd : ${INST_INFO[i].rd}`);
console.log(`INST_INFO[${i}].shamt : ${INST_INFO[i].shamt}`);
} else if (INST_INFO[i].opcode in TypeJList) {
console.log(`INST_INFO[${i}].target : ${INST_INFO[i].target}`);
} else {
console.log('Not available instrution\n');
}
}
console.log('Memory Dump - Text Segment\n');
for (let i = 0; i < textSize; i += 4) {
console.log(
`text_seg[${i}] : 0x${memRead(MEM_TEXT_START + i).toString(16)}`,
);
}
for (let i = 0; i < dataSize; i += 4) {
console.log(
`text_seg[${i}] : 0x${memRead(MEM_DATA_START + i).toString(16)}`,
);
}
console.log(`Current PC: ${currentState.PC.toString(16)}`);
}
export function numToBits(num: number, pad = 32): string {
// 10진수 정수를 2진수 bit로 변경해서 return
if (num >= 0) {
return num.toString(2).padStart(pad, '0'); //양수일때
} else {
num = 2 ** pad + num;
return num.toString(2).padStart(pad, '0'); //음수일때;
}
}
export function toHexAndPad(num: number, pad = 8): string {
/*
* num : Number or String(숫자 형식, 10진법), pad : Number
* input : 18 => output: '00000012'
* Recommend | num을 Number 타입으로 넣을 것
*/
return Number(num).toString(16).padStart(pad, '0');
}
export function symbolTableAddEntry(symbol: SymbolTableType) {
SYMBOL_TABLE[symbol.name] = symbol.address;
Iif (DEBUG) {
log(1, `${symbol.name}: 0x${toHexAndPad(symbol.address)}`);
}
}
export function log(printType: number, content: string) {
console.log(pType[printType] + content);
}
export function isEmpty(value: string | null | undefined | object) {
const emptyArray: string[] = [''];
Iif (
value === '' ||
value === null ||
value === undefined ||
(value !== null &&
typeof value === 'object' &&
!Object.keys(value).length) ||
value === emptyArray
) {
return true;
} else {
return false;
}
}
// Parsing an assembly file(*.s) into a list
export function makeInput(
inputFolderName: string,
inputFileName: string,
): string[] {
/*
if the inputFilePath is /Users/junghaejune/simulator/sample_input/sample/example1.s,
currDirectory : /Users/junghaejune/simulator
inputFolderPath : sample_input/sample
inputFileName: example1.s
*/
const currDirectory: string = process.cwd();
const inputFilePath: string = path.join(
currDirectory,
inputFolderName,
inputFileName,
);
try {
Iif (fs.existsSync(inputFilePath) === false) throw 'INPUT_PATH_ERROR';
const input: string = fs.readFileSync(inputFilePath, 'utf-8');
Iif (isEmpty(input)) throw 'INPUT_EMPTY';
return input.split('\n');
} catch (err) {
if (err === 'INPUT_PATH_ERROR') {
log(
3,
`No input file ${inputFileName} exists. Please check the file name and path.`,
);
} else if (err === 'INPUT_EMPTY') {
log(
3,
`input file ${inputFileName} is not opened. Please check the file`,
);
} else console.error(err);
exit(1);
}
}
export function simulatorUnitTest(
testCase: simulatorOutputType,
output: simulatorOutputType,
) {
function printResult(
origin: {[key: string]: string} | Record<string, never>,
compare: {[key: string]: string} | Record<string, never>,
) {
Object.keys(origin).map(key => {
if (compare[key]) {
const color =
origin[key] === compare[key] ? bcolors.GREEN : bcolors.RED;
console.log(
`${color}${key} : ${origin[key]} ${key} : ${compare[key]}${bcolors.ENDC}`,
);
} else {
console.log(`${bcolors.RED}${key} : ${origin[key]}${bcolors.ENDC}`);
}
});
}
type keyType = 'registers' | 'dataSection' | 'stackSection';
const keyList: keyType[] = ['registers', 'dataSection', 'stackSection'];
console.log(`---------------PC---------------`);
console.log(
`${testCase.PC === output.PC ? bcolors.GREEN : bcolors.RED}PC : ${
testCase.PC
} PC : ${output.PC}${bcolors.ENDC}\n`,
);
keyList.map(key => {
console.log(`---------------${key}---------------`);
printResult(testCase[key], output[key]);
console.log('\n');
});
}
export function parseSimulatorOutput(rawOutput: string): simulatorOutputType {
//input : test simulator input
//ouput : object type -> { register : {PC:, R0:,...}, dataSection:{}, stackSection{}}
function splitHelper(input: string): [string, string] {
const returnValue = input.split(/:|\n/);
return returnValue.length === 2
? [returnValue[0], returnValue[1].trim()]
: null;
}
function setTypeParser(
input: string,
): {[key: string]: string} | Record<string, never> {
const returnSet = {};
input
.split(/\n/)
.filter(e => e !== '')
.map(element => {
const result = splitHelper(element);
result ? (returnSet[result[0]] = result[1]) : null;
});
return returnSet;
}
const outputList = rawOutput
.split(/Program Counter\n|Registers\n|Data section|Stack section\n/)
.filter(e => e !== '');
const PC = setTypeParser(outputList[0]);
const registers = setTypeParser(outputList[1]);
const dataSection = setTypeParser(outputList[2] || '');
const stackSection = setTypeParser(outputList[3] || '');
return {PC: PC.PC, registers, dataSection, stackSection};
}
export function makeOutput(
inputFolderName: string,
inputFileName: string,
): string {
/*
if the inputFilePath is /Users/junghaejune/simulator/sample_input/sample/example1.s,
currDirectory : /Users/junghaejune/simulator
inputFolderPath : sample_input/sample
inputFileName: example1.s
*/
const currDirectory: string = process.cwd();
const inputFilePath: string = path.join(
currDirectory,
inputFolderName,
inputFileName,
);
try {
Iif (fs.existsSync(inputFilePath) === false) throw 'INPUT_PATH_ERROR';
const input: string = fs.readFileSync(inputFilePath, 'utf-8');
Iif (isEmpty(input)) throw 'INPUT_EMPTY';
return input;
} catch (err) {
if (err === 'INPUT_PATH_ERROR') {
log(
3,
`No input file ${inputFileName} exists. Please check the file name and path.`,
);
} else if (err === 'INPUT_EMPTY') {
log(
3,
`input file ${inputFileName} is not opened. Please check the file`,
);
} else console.error(err);
exit(1);
}
}
// Create an Object file(*.o) in the desired path
export function makeObjectFile(
outputFolderPath: string,
outputFileName: string,
content: string[],
) {
/*
if the outputFilePath is /Users/junghaejune/simulator/sample_input/sample/example1.s,
currDirectory : /Users/junghaejune/simulator
outputFolderPath : sample_input/sample
outputFileName: example1.o
content : ['01010', '01010']
*/
const currDirectory: string = process.cwd();
const outputFilePath: string = path.join(
currDirectory,
outputFolderPath,
outputFileName,
);
try {
if (fs.existsSync(outputFilePath) === true) {
fs.unlink(outputFilePath, err => {
err
? console.error(err)
: log(0, `Output file ${outputFileName} exists. Remake the file`);
});
} else throw 'OUTPUT_NOT_EXISTS';
const fd: number = fs.openSync(outputFilePath, 'a');
content.forEach(item => {
fs.appendFileSync(fd, item + '\n', 'utf-8');
});
fs.closeSync(fd);
} catch (err) {
if (err === 'OUTPUT_NOT_EXISTS') {
log(0, `Output file ${outputFileName} does not exists. Make the file`);
} else console.error(err);
exit(1);
}
}
export function makeMappingDetail(
assemblyFile: string[],
dataSeg: string[],
textSeg: string[],
mappingTable: number[][],
output: string[],
) {
const mappingDetail: IMapDetail[] | null = [] as IMapDetail[];
let textCounter = 0;
assemblyFile.forEach((assemblyLine, i) => {
const binaryInstructionNumbers: number[] = [];
let binaryInstructions: string[] = [];
if (assemblyLine.includes('.data')) {
binaryInstructionNumbers.push(0);
binaryInstructions = [output[0]];
} else if (assemblyLine.includes('.word')) {
const dataSegIndex = dataSeg.indexOf(assemblyLine.split('\t')[2]);
const dataIndex = output.length - dataSeg.length + dataSegIndex;
binaryInstructionNumbers.push(dataIndex);
binaryInstructions = [output[dataIndex]];
} else if (assemblyLine.includes('.text')) {
binaryInstructionNumbers.push(1);
binaryInstructions = [output[1]];
} else {
const binaryIndexes = mappingTable[textCounter];
binaryInstructions = binaryIndexes.map(index => {
binaryInstructionNumbers.push(index + 2);
return output[index + 2];
});
assemblyLine === textSeg[textCounter] && textCounter++;
}
const binaryData: IBinaryData[] = [];
binaryInstructions.forEach((inst, j) => {
const binaryInstructionIndex = binaryInstructionNumbers[j];
const temp: IBinaryData = {
lineNumber: binaryInstructionIndex,
data: inst,
};
binaryData.push(temp);
});
mappingDetail.push({
key: i,
assembly: assemblyLine,
binary: binaryData,
});
});
return mappingDetail;
}
/*
assignment2 util
*/
/*
Procedure: fromBinary
Purpose: From binary to integer
*/
export function fromBinary(bits: string): number {
return parseInt(bits, 2);
}
/*
Procedure: memRead
Purpose: read a 32-bit word from memory
*/
export function memRead(address: number): number {
for (let i = 0; i < MEM_NREGIONS; ++i) {
if (
address >= memRegions[i].start &&
address < memRegions[i].start + memRegions[i].size
) {
const offset = address - memRegions[i].start;
const result =
(memRegions[i].mem[offset + 3] << 24) |
(memRegions[i].mem[offset + 2] << 16) |
(memRegions[i].mem[offset + 1] << 8) |
(memRegions[i].mem[offset + 0] << 0);
return result;
}
}
}
/*
Procedure: memWrite
Purpose: Write a 32-bit word to memory
*/
export function memWrite(address: number, value: number): void {
memRegions.forEach(memRegion => {
if (
address >= memRegion.start &&
address < memRegion.start + memRegion.size
) {
const offset = address - memRegion.start;
memRegion.mem[offset + 3] = (value >> 24) & 0xff;
memRegion.mem[offset + 2] = (value >> 16) & 0xff;
memRegion.mem[offset + 1] = (value >> 8) & 0xff;
memRegion.mem[offset + 0] = (value >> 0) & 0xff;
/* set_offBound */
memRegion.dirty = true;
if (memRegion.type === MEM_GROW_UP) {
memRegion.offBound =
offset + 4 > memRegion.offBound ? offset + 4 : memRegion.offBound;
} else
memRegion.offBound =
offset + 4 < memRegion.offBound ? offset + 4 : memRegion.offBound;
}
});
}
/*
Procedure: memWriteHalf
Purpose: Write a half of 32-bit word to memory
*/
export function memWriteHalf(address: number, value: number): void {
memRegions.forEach(memRegion => {
if (
address >= memRegion.start &&
address < memRegion.start + memRegion.size
) {
const offset = address - memRegion.start;
memRegion.mem[offset + 1] = (value >> 8) & 0xff;
memRegion.mem[offset + 0] = (value >> 0) & 0xff;
/* set_offBound */
memRegion.dirty = true;
if (memRegion.type === MEM_GROW_UP)
memRegion.offBound =
offset + 2 > memRegion.offBound ? offset + 2 : memRegion.offBound;
else
EmemRegion.offBound =
offset + 2 < memRegion.offBound ? offset + 2 : memRegion.offBound;
}
});
}
/*
Procedure: initMemory
*/
export function initMemory(): void {
for (let i = 0; i < MEM_NREGIONS; ++i) {
memRegions[i].mem = Array.from({length: memRegions[i].size}, () => 0);
}
}
/*
Procedure: initInstInfo
*/
export function initInstInfo(
NUM_INST: number,
INST_INFO: Iinstruction[],
): void {
for (let i = 0; i < NUM_INST; ++i) {
INST_INFO[i].value = 0;
INST_INFO[i].opcode = 0;
INST_INFO[i].funcCode = 0;
INST_INFO[i].rs = 0;
INST_INFO[i].rt = 0;
INST_INFO[i].rd = 0;
INST_INFO[i].imm = 0;
INST_INFO[i].shamt = 0;
INST_INFO[i].target = 0;
}
}
/*
Procedure: get_inst_info
Purpose: Read instruction information
*/
export function getInstInfo(pc: number): instruction {
return INST_INFO[(pc - MEM_TEXT_START) >> 2];
}
/*
Procedure: main process
*/
export async function mainProcess(
INST_INFO: instruction[],
cycles: number,
CYCLES: simulatorOutputType[],
): Promise<simulatorOutputType> {
let i = cycles;
let result = '';
return new Promise<simulatorOutputType>((resolve, reject) => {
try {
Iif (DEBUG_SET) {
console.log(`Simulating for ${cycles} cycles...!\n`);
console.log('MAIN PROCESS', CYCLES);
while (i > 0) {
cycle();
rdump();
if (MEM_DUMP_SET) dumpMemory();
i -= 1;
if (RUN_BIT === 0) break;
}
} else {
running(i, CYCLES);
result += rdump();
Eif (MEM_DUMP_SET) {
result += dumpMemory();
}
let EachCycle: string = rdump();
Eif (MEM_DUMP_SET) EachCycle += dumpMemory();
CYCLES.push(parseSimulatorOutput(EachCycle));
}
const returnObject = parseSimulatorOutput(result);
resolve(returnObject);
} catch (error) {
reject(error);
}
});
}
/*
Procedure: cycle
Purpose: Execute a cycle
*/
export function cycle(): void {
process_instruction();
instAddOne();
}
export function dumpMemory(): string {
let dump_string = '';
if (memData.dirty) {
const dstart = memData.start;
const dstop = memData.start + memData.offBound;
dump_string += `Data section\n`;
dump_string += mdump(dstart, dstop);
dump_string += '\n';
}
if (memStack.dirty) {
const dstart = memStack.start + memStack.offBound;
const dstop = memStack.start + memStack.size - 4;
dump_string += `Stack section\n`;
dump_string += mdump(dstart, dstop);
dump_string += '\n';
}
return dump_string;
}
/*
Procedure: mdump
Purpose: Dump a word-aligned region of memory to the output file.
*/
export function mdump(start: number, stop: number): string {
let mdump_string = '';
for (let i = start; i < stop + 1; i += 4) {
mdump_string += `0x${toHexAndPad(i)}: 0x${toHexAndPad(memRead(i))}\n`;
}
mdump_string += '\n';
return mdump_string;
}
/*
Procedure: rdump
Purpose: Dump current register and bus values to the output file.
*/
export function rdump(): string {
let rdump_string = '';
rdump_string += 'Program Counter\n';
rdump_string += `PC: 0x${toHexAndPad(currentState.PC)}\n`;
rdump_string += `Registers\n`;
for (let k = 0; k < MIPS_REGS; ++k) {
rdump_string += `R${k}: 0x${toHexAndPad((currentState.REGS[k] >>>= 0))}\n`;
}
rdump_string += '\n';
return rdump_string;
}
/*
Procedure: run n
Purpose: Simulate MIPS for n cycles
*/
export function running(num_cycles: number, CYCLES: simulatorOutputType[]) {
let running_string = '';
Iif (RUN_BIT === 0) {
running_string = "Can't simulate, Simulator is halted\n";
}
running_string = `Simulating for ${num_cycles} cycles...!\n\n`;
for (let i = 0; i < num_cycles; ++i) {
if (RUN_BIT === 0) {
running_string += `Simulator halted ${i}th cycle.\n\n`;
break;
}
let EachCycle: string = rdump();
Eif (MEM_DUMP_SET) EachCycle += dumpMemory();
CYCLES.push(parseSimulatorOutput(EachCycle));
cycle();
}
console.log(running_string);
}
|