https://gunkies.org/index.php?action=history&feed=atom&title=Xv6_homework_6 2026-05-19T14:46:13Z Revision history for this page on the wiki MediaWiki 1.30.1 https://gunkies.org/w/index.php?title=Xv6_homework_6&diff=20426&oldid=prev 2018-12-30T13:57:01Z

<p>+cat</p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 13:57, 30 December 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l22" >Line 22:</td> <td colspan="2" class="diff-lineno">Line 22:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Assignment: In xv6, set a breakpoint at the beginning of syscall() to catch the very first system call. What values are on the stack at this point? Turn in the output of print-stack 35 at that breakpoint with each value labeled as to what it is (e.g., saved %ebp for trap, trapframe.eip, etc.).</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Assignment: In xv6, set a breakpoint at the beginning of syscall() to catch the very first system call. What values are on the stack at this point? Turn in the output of print-stack 35 at that breakpoint with each value labeled as to what it is (e.g., saved %ebp for trap, trapframe.eip, etc.).</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This completes the homework.&lt;/pre&gt;</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This completes the homework.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&lt;/pre&gt;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[Category: Documentation]]</ins></div></td></tr> <!-- diff cache key mediawiki-wiki_:diff:version:1.11a:oldid:10688:newid:20426 --> </table>

Jnc https://gunkies.org/w/index.php?title=Xv6_homework_6&diff=10688&oldid=prev 2011-10-05T20:37:43Z

<p>Created page with &quot;Since this has gone missing... &lt;pre&gt; Lecture 6 homework: xv6 and Interrupts and Exceptions Handed out: Wednesday, September 21, 2005 Due: Wednesday, September 28, Oct 3, 2005 R...&quot;</p> <p><b>New page</b></p><div>Since this has gone missing...<br /> <br /> &lt;pre&gt;<br /> Lecture 6 homework: xv6 and Interrupts and Exceptions<br /> <br /> Handed out: Wednesday, September 21, 2005<br /> Due: Wednesday, September 28, Oct 3, 2005<br /> Read: trapasm.C, trap.c, syscall.c, vectors.S, usys.c of xv6. Skim lapic.c, ioapic.c, and picirq.c<br /> <br /> Hand-In Procedure<br /> <br /> You are to turn in this homework during lecture. Please write up your answers to the exercises below and hand them in to a 6.828 staff member at the beginning of the lecture.<br /> <br /> Introduction<br /> <br /> Try to understand trapasm.C, trap.c, syscall.c, vectors.S, usys.c of xv6. You will need to consult:<br /> <br /> Chapter 5 of IA-32 Intel Architecture Software Developer's Manual, Volume 3: System programming guide; you can skip sections 5.7.1, 5.8.2, and 5.12.2. Be aware that terms such as exceptions, traps, interrupts, faults and aborts have no standardized meaning.<br /> <br /> Chapter 9 of the 1987 i386 Programmer's Reference Manual also covers exception and interrupt handling in IA32 processors.<br /> <br /> Assignment: In xv6, set a breakpoint at the beginning of syscall() to catch the very first system call. What values are on the stack at this point? Turn in the output of print-stack 35 at that breakpoint with each value labeled as to what it is (e.g., saved %ebp for trap, trapframe.eip, etc.).<br /> <br /> This completes the homework.&lt;/pre&gt;</div>

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