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doukutsu-rs/drshorizon/symbolize.js
2022-12-01 14:30:59 +01:00

51 lines
1.4 KiB
JavaScript

// <reference types="node" />
const readline = require('readline');
const childProcess = require('child_process');
const rl = readline.createInterface({
input: process.stdin,
terminal: false
});
let textStart = 0;
const textStartRegex = /__text_start = 0x([0-9a-f]+)/i;
let symbolize = false;
if (process.argv.length <= 2) {
console.error('Usage: node symbolize.js <path to ELF file>');
process.exit(1);
}
const elfPath = process.argv[2];
rl.on('line', (line) => {
if (textStart === 0) {
const match = textStartRegex.exec(line);
if (match) {
textStart = parseInt(match[1], 16);
}
}
if (line.includes("stack backtrace:")) {
symbolize = true;
}
if (symbolize) {
const match = /0x([0-9a-f]+) - \<unknown\>/.exec(line);
if (match) {
const addr = parseInt(match[1], 16);
const relative = addr - textStart;
// run addr2line on the address
const addr2line = childProcess.spawnSync('addr2line', ['-e', elfPath, '-j', '.text', '-f', '-C', '0x' + relative.toString(16)]);
if (addr2line.status === 0) {
const output = addr2line.stdout.toString();
const lines = output.split('\n');
const [func, file] = lines;
line = line.replace(match[0], `0x${addr.toString(16)} - ${func} (${file})`);
}
}
}
console.log(line);
});