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json2test.js
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json2test.js
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const fs = require("fs");
const process = require("process");
const steps = JSON.parse(fs.readFileSync(process.argv[2])).steps;
var stepsOut = Array(steps.length).fill({});
for (var i = 0; i < steps.length; i++) {
stepsOut[i] = {}
stepsOut[i].access_paddr = Array(16).fill(0);
stepsOut[i].access_val = Array(16).fill(0);
stepsOut[i].access_readWriteEnd = Array(16).fill(0);
var ram_page_orig = Buffer.from(steps[i].circuit_ram, "hex");
if (ram_page_orig.length != 8192) {
throw "bad " + ram_page_orig.length;
}
stepsOut[i].ram = Array(1024).fill(0);
for (var j = 0; j < 1024; j++) {
stepsOut[i].ram[j] = "0x" + ram_page_orig.readBigUint64LE(j*8).toString(16);
}
if (i > 0) {
// console.log(JSON.stringify(stepsOut[i-1].ram_after));
// console.log(JSON.stringify(stepsOut[i].ram));
for (var j = 0; j < 1024; j++) {
if (stepsOut[i-1].ram_after[j] !== stepsOut[i].ram[j]) {
console.log("access log mismatch " + j);
}
}
}
for (var j = 0; j < steps[i].accesses.length; j++) {
stepsOut[i].access_paddr[j] = steps[i].accesses[j].address;
stepsOut[i].access_readWriteEnd[j] = steps[i].accesses[j].type == "read" ? 0 : 1;
stepsOut[i].access_val[j] = "0x" + Buffer.from(steps[i].accesses[j].value, "hex").readBigUInt64LE(0).toString(16);
}
if (stepsOut[i].ram.length > 8192/8) {
console.log("too long");
process.exit(1);
}
var ram_page_after_orig = Buffer.from(steps[i].circuit_ram, "hex");
if (ram_page_after_orig.length != 8192) {
throw "bad " + ram_page_after_orig.length;
}
stepsOut[i].ram_after = Array(1024).fill(0);
for (var j = 0; j < 1024; j++) {
stepsOut[i].ram_after[j] = "0x" + ram_page_after_orig.readBigUint64LE(j*8).toString(16);
}
for (var j = 0; j < steps[i].accesses.length; j++) {
let paddr = stepsOut[i].access_paddr[j];
if (stepsOut[i].access_readWriteEnd[j] == 1) {
if (paddr < 1024) {
stepsOut[i].ram_after[paddr / 8] = stepsOut[i].access_val[j];
} else {
let off = paddr - 0x70000000 + 1024;
if (off / 8 > 1024) {
throw "out of range write 0x" + paddr.toString("hex");
}
stepsOut[i].ram_page_after[off / 8] = stepsOut[i].access_val[j];
}
}
}
stepsOut[i].access_readWriteEnd[steps[i].accesses.length] = 2;
// console.log("after: " + JSON.stringify(stepsOut[i].ram_after));
/* console.log('input := { ram: ' + JSON.stringify(ram_page).replaceAll('"', '') + '; ram_disagree: ' + JSON.stringify(ram_page_after).replaceAll('"', '') + '; access_paddr: ' + JSON.stringify(access_paddr) + '; access_val: ' + JSON.stringify(access_val).replaceAll('"', '') +'; access_readWriteEnd: ' + JSON.stringify(access_readWriteEnd) + '; };');
console.log('return_value == 0;');
console.log('---'); */
}
//console.log("consistency check");
for (let step = 0; step < stepsOut.length; step++) {
if (step > 0) {
for (var j = 0; j < 1024; j++) {
if (stepsOut[step-1].ram_after[j] !== stepsOut[step].ram[j]) {
console.log("access log mismatch " + j + " " + stepsOut[step-1].ram_after[j] + " " + stepsOut[step].ram[j]);
}
}
}
}
//console.log("consistency check done");
const MAX_CYCLE = 1024*1024*1024;
const BISECTION_STEPS = 30;
const disagreeStep = 11;
let left = 0;
let right = MAX_CYCLE;
let lastAgree = 0;
let lastDisagree = MAX_CYCLE;
let prover_bisection_cycle = Array(BISECTION_STEPS).fill(0);
let verifier_bisections = Array(BISECTION_STEPS).fill(0);
prover_bisection_RAM = Array(BISECTION_STEPS).fill([]);
let bisect_step = 0;
for (let i = 0; i < BISECTION_STEPS; i++) {
let mid = Math.floor((left + right) / 2);
// console.log("Bisect step " + i + " mid " + mid);
prover_bisection_cycle[i] = mid;
if (mid >= stepsOut.length) {
// console.log("Got out of range step " + mid + " >= " + stepsOut.length + ", repeating last step, assuming halted state");
prover_bisection_RAM[i] = stepsOut[stepsOut.length - 1].ram_after;
} else {
// console.log("setting ram for " + (bisect_step) + " for " + mid);
prover_bisection_RAM[i] = stepsOut[mid].ram;
}
if (mid < disagreeStep) {
lastAgree = mid;
left = mid + 1;
verifier_bisections[i] = 1;
} else {
lastDisagree = mid;
right = mid - 1;
verifier_bisections[i] = 0;
}
bisect_step++;
}
let agree_ram = 0, disagree_ram = 0;
for (let i = 0; i < BISECTION_STEPS; i++) {
if (prover_bisection_cycle[i] == lastAgree) {
agree_ram = i;
}
}
for (let i = 0; i < BISECTION_STEPS; i++) {
if (prover_bisection_cycle[i] == lastDisagree) {
disagree_ram = i;
}
}
/*
console.log("agree_ram: " + agree_ram);
console.log("disagree_ram: " + disagree_ram);
*/
prover_agree_RAM = stepsOut[lastAgree].ram;
prover_disagree_RAM = stepsOut[lastAgree + 1].ram;
if (lastAgree + 1 != lastDisagree) {
throw "weird";
}
/*
console.log("last agree: " + lastAgree);
console.log("last disagree " +lastDisagree);
console.log("verifier bisections: " + verifier_bisections);
console.log(JSON.stringify(stepsOut[lastAgree].ram_after));
console.log(JSON.stringify(stepsOut[lastAgree+1].ram));
for (let i = 0; i < 1024; i++) {
if (stepsOut[lastAgree].ram_after[i] !== stepsOut[lastAgree + 1].ram[i]) {
console.log("inconsitency, " + i + " " + stepsOut[lastAgree].ram_after[i] + " " + stepsOut[lastAgree + 1].ram[i]);
}
}
*/
/* console.log(JSON.stringify(prover_bisection_RAM));
*/
if (prover_agree_RAM.length != 1024 || prover_disagree_RAM.length != 1024) {
console.log("ram mismatch");
process.exit(1);
}
if (prover_bisection_RAM.length != 30) {
console.log("bisection RAM mismatch");
process.exit(1);
}
if (verifier_bisections.length != 30) {
console.log("bisections mismatch");
process.exit(1);
}
console.log('input := { ram: ' + JSON.stringify(stepsOut[lastAgree].ram).replaceAll('"', '') + '; ram_disagree: ' + JSON.stringify(stepsOut[lastAgree+1].ram).replaceAll('"', '') + '; ' +
'prover_bisection_RAM: ' + JSON.stringify(prover_bisection_RAM).replaceAll('"', '') + '; ' +
/* lastAgree isn't perfect here for > steps.length */
'access_paddr: ' + JSON.stringify(stepsOut[lastAgree].access_paddr) + '; access_val: ' + JSON.stringify(stepsOut[lastAgree].access_val).replaceAll('"', '') +'; access_readWriteEnd: ' + JSON.stringify(stepsOut[lastAgree].access_readWriteEnd) + '; ' +
'verifier_bisections: ' + JSON.stringify(verifier_bisections) + '; pad: 0; };');
console.log('return_value == 0;');
console.log('---');
let tester = '#define RV64I_VERBOSE\n#define __CPROVER_assume(x) do { } while (0)\n#include <stdio.h>\n#include "rv64i.c"\n'
tester += 'int main() {\n';
tester += ' // ' + lastAgree + ' and ' + lastDisagree + '\n';
tester += ' struct BisectInput input = {\n';
tester += ' .ram = ' + JSON.stringify(stepsOut[lastAgree].ram).replaceAll('"', '').replaceAll("[", "{").replaceAll("]", "}") + ',\n';
tester += ' .ram_disagree = ' + JSON.stringify(stepsOut[lastAgree+1].ram).replaceAll('"', '').replaceAll("[", "{").replaceAll("]", "}") + ',\n';
tester += ' .prover_bisection_RAM = ' + JSON.stringify(prover_bisection_RAM).replaceAll('"', '').replaceAll("[", "{").replaceAll("]", "}") + ',\n';
tester += ' .access_paddr = ' + JSON.stringify(stepsOut[lastAgree].access_paddr).replaceAll("[", "{").replaceAll("]", "}") + ',\n';
tester += ' .access_val = ' + JSON.stringify(stepsOut[lastAgree].access_val).replaceAll('"', '').replaceAll("[", "{").replaceAll("]", "}") + ',\n';
tester += ' .access_readWriteEnd = ' + JSON.stringify(stepsOut[lastAgree].access_readWriteEnd).replaceAll("[", "{").replaceAll("]", "}") + ',\n';
tester += ' .verifier_bisections = ' + JSON.stringify(verifier_bisections).replaceAll("[", "{").replaceAll("]", "}") + ', .pad = 0 };\n';
tester += ' return mpc_main(input); }\n';
fs.writeFileSync("tester.c", tester);