Bug 6275 - BTS opcode not handled correctly by x86emu
Summary: BTS opcode not handled correctly by x86emu
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/General (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: high normal
Assignee: Xorg Project Team
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Reported: 2006-03-15 09:26 UTC by Felix Kuehling
Modified: 2006-03-15 10:50 UTC (History)
0 users

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Attachments
Enable correct handling of the BTS instruction (opcode 0f ab) (1.03 KB, patch)
2006-03-15 09:29 UTC, Felix Kuehling 		no flags Details | Splinter Review
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Description Felix Kuehling 2006-03-15 09:26:47 UTC 
I'm about to attach a patch that enables correct handling of the BTS (atomic bit
test and set) instruction in the x86 emulator. This is needed for correct
execution of an ATI video BIOS on x86_64.

This change was developed and tested on the Xorg 6.9 release, but the source
file in question hasn't changed since the release. So the patch is against CVS HEAD.
Comment 1 Felix Kuehling 2006-03-15 09:29:26 UTC 
Created attachment 4943 [details] [review]
Enable correct handling of the BTS instruction (opcode 0f ab)

The code was there but #ifdefed out. Insead of BTS, BT was executed. This patch
enables the BTS function and hooks it up the the correct opcode.
Comment 2 Felix Kuehling 2006-03-16 05:50:05 UTC 
The patch in the attachment was committed to Xorg CVS HEAD.

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