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path: root/all_tests.py
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#!/usr/bin/python
"""Run all the tests inside the test/ directory as a test suite."""
if __name__ == '__main__':
	import unittest
	from test import *
	from sys import exit, argv

	try:
		verbosity = int(argv[1])
	except IndexError:
		verbosity = 2

	tests = []
	for key, val in vars().copy().items():
		if key.startswith('tc_'):
			tests.extend(v for k,v in vars(val).items() if type(v) == type)

	suite = unittest.TestSuite(map(unittest.makeSuite, tests))
	result = unittest.TextTestRunner(verbosity=verbosity).run(suite)
	if len(result.errors) + len(result.failures) > 0:
		exit(1)
an class="na">content="text/html; charset=UTF-8"> <title>Mu - linux/101_write.subx</title> <meta name="Generator" content="Vim/8.1"> <meta name="plugin-version" content="vim8.1_v1"> <meta name="syntax" content="none"> <meta name="settings" content="number_lines,use_css,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> <meta name="colorscheme" content="minimal-dark"> <style type="text/css"> <!-- pre { font-family: monospace; color: #000000; background-color: #a8a8a8; } body { font-size:12pt; font-family: monospace; color: #000000; background-color: #a8a8a8; } a { color:inherit; } * { font-size:12pt; font-size: 1em; } .subxComment { color: #005faf; } .subxS1Comment { color: #0000af; } .subxS2Comment { color: #8a8a8a; } .LineNr { } .Constant { color: #008787; } .Normal { color: #000000; background-color: #a8a8a8; padding-bottom: 1px; } .SpecialChar { color: #d70000; } .subxMinorFunction { color: #875f5f; } --> </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; } var 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();'> <a href='https://github.com/akkartik/mu/blob/main/linux/101_write.subx'>https://github.com/akkartik/mu/blob/main/linux/101_write.subx</a> <pre id='vimCodeElement'> <span id="L1" class="LineNr"> 1 </span><span class="subxComment"># _write: write to a file descriptor (fd)</span> <span id="L2" class="LineNr"> 2 </span> <span id="L3" class="LineNr"> 3 </span>== code <span id="L4" class="LineNr"> 4 </span><span class="subxComment"># instruction effective address register displacement immediate</span> <span id="L5" class="LineNr"> 5 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> <span id="L6" class="LineNr"> 6 </span><span class="subxS1Comment"># . 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="L7" class="LineNr"> 7 </span> <span id="L8" class="LineNr"> 8 </span><span class="SpecialChar">Entry</span>: <span class="subxComment"># just exit; can't test _write just yet</span> <span id="L9" class="LineNr"> 9 </span> bb/copy-to-ebx 0/imm32 <span id="L10" class="LineNr">10 </span> e8/call <a href='000init.subx.html#L18'>syscall_exit</a>/disp32 <span id="L11" class="LineNr">11 </span> <span id="L12" class="LineNr">12 </span><span class="subxMinorFunction">_write</span>: <span class="subxComment"># fd: int, s: (addr array byte)</span> <span id="L13" class="LineNr">13 </span> <span class="subxS1Comment"># . prologue</span> <span id="L14" class="LineNr">14 </span> 55/push-ebp <span id="L15" class="LineNr">15 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> <span id="L16" class="LineNr">16 </span> <span class="subxS1Comment"># . save registers</span> <span id="L17" class="LineNr">17 </span> 50/push-eax <span id="L18" class="LineNr">18 </span> 51/push-ecx <span id="L19" class="LineNr">19 </span> 52/push-edx <span id="L20" class="LineNr">20 </span> 53/push-ebx <span id="L21" class="LineNr">21 </span> <span class="subxComment"># syscall(write, fd, (data) s+4, (size) *s)</span> <span id="L22" class="LineNr">22 </span> <span class="subxS1Comment"># . ebx = fd</span> <span id="L23" class="LineNr">23 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ebx</span> <span id="L24" class="LineNr">24 </span> <span class="subxS1Comment"># . var data/ecx: (addr byte) = s+4</span> <span id="L25" class="LineNr">25 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ecx</span> <span id="L26" class="LineNr">26 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to ecx</span> <span id="L27" class="LineNr">27 </span> <span class="subxS1Comment"># . var size/edx: int = *s</span> <span id="L28" class="LineNr">28 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span> <span id="L29" class="LineNr">29 </span> 8b/copy 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *edx to edx</span> <span id="L30" class="LineNr">30 </span> <span class="subxS1Comment"># . syscall</span> <span id="L31" class="LineNr">31 </span> e8/call <a href='000init.subx.html#L29'>syscall_write</a>/disp32 <span id="L32" class="LineNr">32 </span> <span class="subxComment"># if (eax &lt; 0) abort</span> <span id="L33" class="LineNr">33 </span> 3d/compare-eax-with 0/imm32 <span id="L34" class="LineNr">34 </span> 0f 8c/jump-if-&lt; $_write:abort/disp32 <span id="L35" class="LineNr">35 </span><span class="Constant">$_write:end</span>: <span id="L36" class="LineNr">36 </span> <span class="subxS1Comment"># . restore registers</span> <span id="L37" class="LineNr">37 </span> 5b/pop-to-ebx <span id="L38" class="LineNr">38 </span> 5a/pop-to-edx <span id="L39" class="LineNr">39 </span> 59/pop-to-ecx <span id="L40" class="LineNr">40 </span> 58/pop-to-eax <span id="L41" class="LineNr">41 </span> <span class="subxS1Comment"># . epilogue</span> <span id="L42" class="LineNr">42 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> <span id="L43" class="LineNr">43 </span> 5d/pop-to-ebp <span id="L44" class="LineNr">44 </span> c3/return <span id="L45" class="LineNr">45 </span> <span id="L46" class="LineNr">46 </span><span class="Constant">$_write:abort</span>: <span id="L47" class="LineNr">47 </span> <span class="subxComment"># can't write a message here for risk of an infinite loop, so we'll use a special exit code instead</span> <span id="L48" class="LineNr">48 </span> <span class="subxS1Comment"># . syscall(exit, 255)</span> <span id="L49" class="LineNr">49 </span> bb/copy-to-ebx 0xff/imm32 <span id="L50" class="LineNr">50 </span> e8/call <a href='000init.subx.html#L18'>syscall_exit</a>/disp32 <span id="L51" class="LineNr">51 </span> <span class="subxComment"># never gets here</span> <span id="L52" class="LineNr">52 </span> <span id="L53" class="LineNr">53 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span> </pre> </body> </html> <!-- vim: set foldmethod=manual : -->