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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
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
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
scottt / gist:38f6a9133b161ddc498b01d602da2346
Last active January 12, 2020 07:01
BRN30055CC52E61.local
@scottt
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
scottt / gist:f392ce60794e9bb6446753bc35074f54
Created November 27, 2019 05:49
https://drill-migration.s3-ap-northeast-1.amazonaws.com/drill-migration.tar.gz
@scottt
scottt / gist:e6c690523282e3b55fe7d88cf8d8679a
Created November 22, 2019 03:34
https://thundercore-chain-data-us-east-1.s3.amazonaws.com/latest
@scottt
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
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
scottt / mitm.go
Last active August 1, 2019 14:26
package network
import (
"bufio"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"