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From: | Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: CWSDPMR0: system crash on INVD |
Date: | 29 Mar 2001 12:31:41 GMT |
Organization: | Aachen University of Technology (RWTH) |
Lines: | 22 |
Message-ID: | <99v9vd$nfu$1@nets3.rz.RWTH-Aachen.DE> |
References: | <99t5g6$m5r$1 AT murdoch DOT acc DOT Virginia DOT EDU> <99t7j4$7ce$1 AT node17 DOT cwnet DOT frontiernet DOT net> <99t91t$rgg$1 AT murdoch DOT acc DOT Virginia DOT EDU> <99ta4e$r99$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE> <99to44$jj9$1 AT murdoch DOT acc DOT Virginia DOT EDU> |
NNTP-Posting-Host: | acp3bf.physik.rwth-aachen.de |
X-Trace: | nets3.rz.RWTH-Aachen.DE 985869101 24062 137.226.32.75 (29 Mar 2001 12:31:41 GMT) |
X-Complaints-To: | abuse AT rwth-aachen DOT de |
NNTP-Posting-Date: | 29 Mar 2001 12:31:41 GMT |
Originator: | broeker@ |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Clark L. Coleman <clc5q AT cobra DOT cs DOT virginia DOT edu> wrote: [...] > If that were the case, and I were running in Ring 3, then how would I > be successfully executing every other Ring 0 instruction that I have > tried besides INVD ? Well, you didn't really clearly state that the other instructuion you mentioned, WBINVD, is also a Ring 0 instruction, and I know neither of them offhand. This still leaves one possibility: incorrect assembly of this instruction, either because you mis-guessed the AT&T mnemonic for it, or because gas miscompiled it --- for a supposedly rarely used instruction like this, that's always a possibility. So: could you see what happens if you insert this instruction by hex code, rather than by mnemonic? And/or verify the objdump of the relevant function against an Intel Opcode manual? -- Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de) Even if all the snow were burnt, ashes would remain.
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