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@jart
jart / blc.S
Last active June 10, 2023 06:58
Binary Lambda Calculus Virtual Machine for x64 Linux in 400 bytes
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
@jart
jart / .init.lua
Last active September 1, 2023 07:14
redbean sqlite tutorial
re = require "re"
sqlite3 = require "lsqlite3"
reNumberPath = re.compile[[^/([0-9][0-9]*)$]]
function SetupSql()
if not db then
db = sqlite3.open('redbean.sqlite3')
db:busy_timeout(1000)
db:exec[[PRAGMA journal_mode=WAL]]
@jart
jart / redbean-requirements.c
Last active July 1, 2021 12:38
redbean requirements for serenityos kernel
/*
redbean: kernel requirements
x86-64 linux system five abi
rax name rdi rsi rdx r10 r8 r9
----- -------------- ------------------------ --------------------------- ------------------------------ -------------------------- ------------------------ ---------------
0x000 read unsigned int fd char *buf size_t count - - -
0x003 close unsigned int fd - - - - -
0x005 fstat unsigned int fd struct stat - - - -
0x007 poll struct pollfd *ufds unsigned int nfds int timeout -
/**
* Example of how AVX512's FPGA-like VPTERNLOG instruction could
* be used to implement the other instructions in the x86 isa.
* Here we implement MMX PADDB. Due to the way we need to reshape
* the data, VPTERNLOG is probably most useful for huge datasets.
*/
uint64_t vpternlog(uint64_t a, uint64_t b, uint64_t c, uint64_t t) {
int i;
uint64_t r;
@jart
jart / reallz4.S
Created January 13, 2021 01:17
Tiniest lz4 block copier that's binary compatible with i8086 + i386 + x86_64
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
RMS NOTATION TUTORIAL
BEHAVIOR
=: write-only
+: read/writeable
&: earlyclobber (impacts register sharing, defensive copying, etc.)
%: commutative
,: groups alternative constraints
?: discourages group of constraints
@jart
jart / illumination.sh
Last active June 20, 2022 18:58
Rational Illumination for PC and TV w/ IBM Scratchpad
#!/bin/sh
fricas -nosman <<EOF
E := [_
-- Standard Illumination Model for Computers_
--_
-- Is defined as a system of linear equations, where negative_
-- colors don't exist and is solved by computing the point at_
-- which they all intersect the one which needs to be defined_
-- as the Planckian locus of the illuminant._
@jart
jart / defer.c
Last active March 26, 2024 07:08
Go-like defer for C that works with most optimization flag combinations under GCC/Clang
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
@jart
jart / printimage.c
Last active December 20, 2023 11:13
/*bin/echo ' -*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;coding:utf-8 -*-┤
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚────────────────────────────────────────────────────────────────────'>/dev/null
if ! [ "${0%.*}.exe" -nt "$0" ]; then
#!/usr/bin/env python2
import BaseHTTPServer
import SocketServer
import base64
import httplib
import mimetypes
import os
import shutil
import ssl