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path: root/examples/bash_automatic_cd.sh
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796074b5 generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-01-09 14:37:03 +0000
span class="kt">pt; font-size: 1em; } .SalientComment { color: #00ffff; } .LineNr { color: #444444; } .Comment { color: #9090ff; } .Comment a { color:#0000ee; text-decoration:underline; } --> </style> <script type='text/javascript'> <!-- /* function to open any folds containing a jumped-to line before jumping to it */ function JumpToLine() { var lineNum; lineNum = window.location.hash; lineNum = lineNum.substr(1); /* strip off '#' */ if (lineNum.indexOf('L') == -1) { lineNum = 'L'+lineNum; } lineElem = document.getElementById(lineNum); /* Always jump to new location even if the line was hidden inside a fold, or * we corrected the raw number to a line ID. */ if (lineElem) { lineElem.scrollIntoView(true); } return true; } if ('onhashchange' in window) { window.onhashchange = JumpToLine; } --> </script> </head> <body onload='JumpToLine();'> <pre id='vimCodeElement'> <span id="L1" class="LineNr"> 1 </span><span class="SalientComment">## first program: same as <a href="https://www.muppetlabs.com/~breadbox/software/tiny/teensy.html">https://www.muppetlabs.com/~breadbox/software/tiny/teensy.html</a></span> <span id="L2" class="LineNr"> 2 </span><span class="Comment"># Just return 42.</span> <span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span> <span id="L4" class="LineNr"> 4 </span><span class="Comment"># To run:</span> <span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx translate ex1.2.subx ex1</span> <span id="L6" class="LineNr"> 6 </span><span class="Comment"># $ subx run ex1</span> <span id="L7" class="LineNr"> 7 </span><span class="Comment"># Expected result:</span> <span id="L8" class="LineNr"> 8 </span><span class="Comment"># $ echo $?</span> <span id="L9" class="LineNr"> 9 </span><span class="Comment"># 42</span> <span id="L10" class="LineNr">10 </span> <span id="L11" class="LineNr">11 </span>== 0x08048054 <span class="Comment"># code segment, after leaving room for ELF header</span> <span id="L12" class="LineNr">12 </span><span class="Comment"># instruction effective address operand displacement immediate</span> <span id="L13" class="LineNr">13 </span><span class="Comment"># op subop mod rm32 base index scale r32</span> <span id="L14" class="LineNr">14 </span><span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> <span id="L15" class="LineNr">15 </span> bb/copy 2a/imm32 <span class="Comment"># copy 42 to EBX</span> <span id="L16" class="LineNr">16 </span> <span class="Comment"># exit(EBX)</span> <span id="L17" class="LineNr">17 </span> b8/copy 1/imm32 <span class="Comment"># copy 1 to EAX</span> <span id="L18" class="LineNr">18 </span> cd/syscall 0x80/imm8 <span class="Comment"># int 80h</span> <span id="L19" class="LineNr">19 </span> <span id="L20" class="LineNr">20 </span><span class="Comment"># vim&#0058;ft=subx</span> </pre> </body> </html> <!-- vim: set foldmethod=manual : -->
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-01-09 14:36:58 +0000