Scott Tsai scottt

scottt / m1.c

Last active September 19, 2024 06:22

scanf to printf on AArch64

	#include <stdio.h>
	#include <stdint.h>
	#include <sys/mman.h>

	int main()
	{
	mprotect((void *)((unsigned long)main & (~0xfff)), 4096,
	PROT_EXEC\|PROT_WRITE);
	{ // gcc and clang puts the "0:", "1:" etc labels below at different places
	char *p;

scottt / GNUmakefile

Last active April 5, 2023 19:22

Memory stores cause minor page faults after fork() but not after vfork() on Linux

	CFLAGS := -Wall -Og
	PROGRAMS := fork-exec-memset vfork-exec-memset

	.PHONY: all
	all: $(PROGRAMS)

	.PHONY: test
	test: all
	./test-fork-exec-memset

scottt / openssl-aesni-speed-test-result

Last active January 4, 2022 04:45

	# openssl speed -elapsed -evp aes-128-gcm
	You have chosen to measure elapsed time instead of user CPU time.
	Doing aes-128-gcm for 3s on 16 size blocks: 55740342 aes-128-gcm's in 3.00s
	Doing aes-128-gcm for 3s on 64 size blocks: 36792402 aes-128-gcm's in 3.00s
	Doing aes-128-gcm for 3s on 256 size blocks: 19513330 aes-128-gcm's in 3.00s
	Doing aes-128-gcm for 3s on 1024 size blocks: 6431553 aes-128-gcm's in 3.00s
	Doing aes-128-gcm for 3s on 8192 size blocks: 943229 aes-128-gcm's in 3.00s
	Doing aes-128-gcm for 3s on 16384 size blocks: 478375 aes-128-gcm's in 3.00s
	OpenSSL 1.1.1c 28 May 2019
	built on: Wed May 29 17:53:30 2019 UTC

scottt / gist:38f6a9133b161ddc498b01d602da2346

Last active January 12, 2020 07:01

BRN30055CC52E61.local

scottt / gist:4574be90ccfcc4f610b832c6762e7b38

Created November 28, 2019 11:12

	Thunder 测试网资讯

	1. RPC 网址
	https://testnet-rpc.thundercore.com
	wss://testnet-ws.thundercore.com

	2. 区块浏览器
	https://scan-testnet.thundercore.com

	3. 发钱水龙头 Faucet

scottt / gist:f392ce60794e9bb6446753bc35074f54

Created November 27, 2019 05:49

https://drill-migration.s3-ap-northeast-1.amazonaws.com/drill-migration.tar.gz

scottt / gist:e6c690523282e3b55fe7d88cf8d8679a

Created November 22, 2019 03:34

https://thundercore-chain-data-us-east-1.s3.amazonaws.com/latest

scottt / truffle-config.js

Created November 12, 2019 14:56

	/* vim: ts=2:sw=2:et
	*
	* Use this file to configure your truffle project. It's seeded with some
	* common settings for different networks and features like migrations,
	* compilation and testing. Uncomment the ones you need or modify
	* them to suit your project as necessary.
	*
	* More information about configuration can be found at:
	*
	* truffleframework.com/docs/advanced/configuration

scottt / Migrations.sol

Created November 12, 2019 14:39

	pragma solidity >=0.4.21 <0.6.0;

	contract Migrations {
	address public owner;
	uint public last_completed_migration;

	constructor() public {
	owner = msg.sender;
	}

scottt / mitm.go

Last active August 1, 2019 14:26