Reformat 1984/mullender in same style as 1984/anonymous
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Landon Curt Noll committed
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<h1>The Grand Prize</h1>
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<p>Sjoerd Mullender</p>
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<p>Robbert van Renesse</p>
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<h2>To build:</h2>
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<pre><code>make all</code></pre>
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<p>NOTE: This entry is likely to fail and/or dump core on modern computers.</p>
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<h2>Judges' comments:</h2>
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<p>NOTE: This entry is likely to fail and/or dump core on modern computers.</p>
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<p>Without question, this C program is one of the most obfuscated
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C program that has ever been received! Like all great contest
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entries, they result in a change of rules for the following year.
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To prevent a flood of similar programs, we requested that programs
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be non machine specific.</p>
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<p>This program was selected for the 1987 t-shirt collection.</p>
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<blockquote><p>NOTE: If your machine is not a Vax-11 or pdp-11, this program will
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not execute correctly. In later years, machine dependent
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code was discouraged.</p></blockquote>
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<p>The C startup routine (via crt0.o) transfers control to a location
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named main. In this case, main just happens to be in the data area.
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The array of shorts, which has been further obfuscated by use of
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different data types, just happens to form a meaningful set of PDP-11
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and Vax instructions. The first word is a PDP-11 branch instruction
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that branches to the rest of the PDP code. On the Vax main is called with
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the calls instruction which uses the first word of the subroutine as a
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mask of registers to be saved. So on the Vax the first word can be anything.
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The real Vax code starts with the second word. This small program
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makes direct calls to the write() Unix system call to produce a
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message on the screen. Can you guess what is printed? We knew you
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couldn’t! :-)</p>
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<p>Copyright © 1984, Landon Curt Noll.
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All Rights Reserved. Permission for personal, educational or non-profit use is
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granted provided this this copyright and notice are included in its entirety
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and remains unaltered. All other uses must receive prior permission in writing
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from both Landon Curt Noll and Larry Bassel.</p>
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File renamed without changes.
@@ -0,0 +1,201 @@
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<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
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<head>
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<meta charset="utf-8" />
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<meta name="generator" content="pandoc" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
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<title>hint</title>
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<style>
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html {
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line-height: 1.5;
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font-family: Georgia, serif;
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font-size: 20px;
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color: #1a1a1a;
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background-color: #fdfdfd;
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}
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body {
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margin: 0 auto;
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max-width: 36em;
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padding-left: 50px;
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padding-right: 50px;
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padding-top: 50px;
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padding-bottom: 50px;
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hyphens: auto;
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overflow-wrap: break-word;
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text-rendering: optimizeLegibility;
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font-kerning: normal;
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}
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@media (max-width: 600px) {
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body {
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font-size: 0.9em;
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padding: 1em;
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}
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h1 {
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font-size: 1.8em;
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}
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}
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@media print {
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body {
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background-color: transparent;
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color: black;
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font-size: 12pt;
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}
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p, h2, h3 {
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orphans: 3;
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widows: 3;
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}
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h2, h3, h4 {
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page-break-after: avoid;
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}
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}
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p {
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margin: 1em 0;
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}
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a {
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color: #1a1a1a;
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}
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a:visited {
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color: #1a1a1a;
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}
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img {
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max-width: 100%;
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}
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h1, h2, h3, h4, h5, h6 {
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margin-top: 1.4em;
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}
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h5, h6 {
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font-size: 1em;
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font-style: italic;
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}
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h6 {
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font-weight: normal;
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}
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ol, ul {
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padding-left: 1.7em;
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margin-top: 1em;
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}
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li > ol, li > ul {
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margin-top: 0;
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}
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blockquote {
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margin: 1em 0 1em 1.7em;
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padding-left: 1em;
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border-left: 2px solid #e6e6e6;
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color: #606060;
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}
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code {
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font-family: Menlo, Monaco, 'Lucida Console', Consolas, monospace;
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font-size: 85%;
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margin: 0;
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}
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pre {
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margin: 1em 0;
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overflow: auto;
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}
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pre code {
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padding: 0;
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overflow: visible;
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overflow-wrap: normal;
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}
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.sourceCode {
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background-color: transparent;
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overflow: visible;
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}
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hr {
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background-color: #1a1a1a;
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border: none;
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height: 1px;
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margin: 1em 0;
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}
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table {
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margin: 1em 0;
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border-collapse: collapse;
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width: 100%;
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overflow-x: auto;
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display: block;
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font-variant-numeric: lining-nums tabular-nums;
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}
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table caption {
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margin-bottom: 0.75em;
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}
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tbody {
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margin-top: 0.5em;
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border-top: 1px solid #1a1a1a;
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border-bottom: 1px solid #1a1a1a;
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}
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th {
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border-top: 1px solid #1a1a1a;
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padding: 0.25em 0.5em 0.25em 0.5em;
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}
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td {
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padding: 0.125em 0.5em 0.25em 0.5em;
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}
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header {
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margin-bottom: 4em;
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text-align: center;
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}
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#TOC li {
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list-style: none;
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}
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#TOC ul {
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padding-left: 1.3em;
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}
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#TOC > ul {
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padding-left: 0;
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}
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#TOC a:not(:hover) {
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text-decoration: none;
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}
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code{white-space: pre-wrap;}
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span.smallcaps{font-variant: small-caps;}
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div.columns{display: flex; gap: min(4vw, 1.5em);}
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div.column{flex: auto; overflow-x: auto;}
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div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
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ul.task-list{list-style: none;}
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ul.task-list li input[type="checkbox"] {
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width: 0.8em;
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margin: 0 0.8em 0.2em -1.6em;
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vertical-align: middle;
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}
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.display.math{display: block; text-align: center; margin: 0.5rem auto;}
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</style>
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<!--[if lt IE 9]>
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<script src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv-printshiv.min.js"></script>
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<![endif]-->
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</head>
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<body>
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<h1 id="the-grand-prize">The Grand Prize</h1>
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<p>Sjoerd Mullender</p>
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<p>Robbert van Renesse</p>
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<h2 id="judges-comments">Judges’ comments:</h2>
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<p>NOTE: This entry is likely to fail and/or dump core on modern
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computers.</p>
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<p>Without question, this C program is the one of the most obfuscated C
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program that has ever been received! Like all great contest entries,
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they result in a change of rules for the following year. To prevent a
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flood of similar programs, we requested that programs be non machine
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specific.</p>
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<p>This program was selected for the 1987 t-shirt collection.</p>
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<blockquote>
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<p>NOTE: If your machine is not a Vax-11 or pdp-11, this program will
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not execute correctly. In later years, machine dependent code was
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discouraged.</p>
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</blockquote>
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<p>The C startup routine (via crt0.o) transfers control to a location
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named main. In this case, main just happens to be in the data area. The
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array of shorts, which has been further obfuscated by use of different
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data types, just happens to form a meaningful set of PDP-11 and Vax
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instructions. The first word is a PDP-11 branch instruction that
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branches to the rest of the PDP code. On the Vax main is called with the
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calls instruction which uses the first word of the subroutine as a mask
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of registers to be saved. So on the Vax the first word can be anything.
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The real Vax code starts with the second word. This small program makes
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direct calls to the write() Unix system call to produce a message on the
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screen. Can you guess what is printed? We knew you couldn’t! :-)</p>
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<p>Copyright (c) 1984, Landon Curt Noll. All Rights Reserved. Permission
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for personal, educational or non-profit use is granted provided this
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this copyright and notice are included in its entirety and remains
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unaltered. All other uses must receive prior permission in writing from
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both Landon Curt Noll and Larry Bassel.</p>
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</body>
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</html>
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+5
-5
@@ -3717,11 +3717,11 @@ that works for both traditional K&R and ANSI C preprocessors.
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<P><B>mullender</B> - hardcoded vax and pdp-11 code to move :-) across the screen</P>
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<P><B>mullender</B> - hardcoded vax and pdp-11 code to move :-) across the screen</P>
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<UL TYPE=square>
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<UL TYPE=square>
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<LI><A HREF="1984/mullender/Makefile">Makefile</A>
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<LI><A HREF="1984/mullender/index.html">index.html</A> - <B>README</B>
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<LI><A HREF="1984/mullender/orig.Makefile">orig.Makefile</A>
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<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/mullender.c">mullender.c</A>
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<LI><A HREF="1984/mullender/mullender.c">mullender.c</A>
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<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/Makefile">Makefile</A>
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<LI><A HREF="1984/mullender/hint.text">hint.text</A>
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<LI><A HREF="1984/mullender/hint.txt">hint.txt</A> - <I>original README</I>
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<LI><A HREF="1984/mullender/hint.html">hint.html</A>
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<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/orig.Makefile">orig.Makefile</A> - <I>original Makefile</I>
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</UL>
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</UL>
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<HR>
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<HR>
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<H2><A NAME="ALL"></A>(all years) (ALL)</H2>
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<H2><A NAME="ALL"></A>(all years) (ALL)</H2>
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+5
-5
@@ -3700,11 +3700,11 @@ a summary description of all of the winners. </P>
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<P><B>mullender</B></P>
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<P><B>mullender</B></P>
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<UL TYPE=square>
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<UL TYPE=square>
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<LI><A HREF="1984/mullender/Makefile">Makefile</A>
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<LI><A HREF="1984/mullender/index.html">index.html</A> - <B>README</B>
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<LI><A HREF="1984/mullender/orig.Makefile">orig.Makefile</A>
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<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/mullender.c">mullender.c</A>
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<LI><A HREF="1984/mullender/mullender.c">mullender.c</A>
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<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/Makefile">Makefile</A>
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<LI><A HREF="1984/mullender/hint.text">hint.text</A>
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<LI><A HREF="1984/mullender/hint.txt">hint.txt</A> - <I>original README</I>
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<LI><A HREF="1984/mullender/hint.html">hint.html</A>
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<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/orig.Makefile">orig.Makefile</A> - <I>original Makefile</I>
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</UL>
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</UL>
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<HR>
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<HR>
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<H2><A NAME="ALL"></A>(all years) (ALL)</H2>
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<H2><A NAME="ALL"></A>(all years) (ALL)</H2>
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Reference in new issue
Block a user