https://gunkies.org/index.php?action=history&feed=atom&title=Xv6_homework_6 2026-09-03T09:49:21Z Revision history for this page on the wiki MediaWiki 1.43.9 https://gunkies.org/w/index.php?title=Xv6_homework_6&diff=20426&oldid=prev 2018-12-30T13:57:01Z

<p>+cat</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; 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"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; 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"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; 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"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; 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" data-marker="+"></td><td style="color: #202122; 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" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; 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" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; 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> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; 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 style="font-weight: bold; text-decoration: none;">[[Category: Documentation]]</ins></div></td></tr> </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&#039;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&#039;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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