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Published 20 hours ago • verified publisher icon DynamoRIO

add decoder support for SMAP instructions STAC and CLAC

Open derekbruening opened this issue 8 years ago • 1 comments

Haswell has a new Supervisor Mode Access Prevention (SMAP) feature which introduces two new instructions, STAC and CLAC, to set and clear a bit in CR4.

derekbruening avatar Dec 11 '16 00:12 derekbruening

(#5505) The kernel instruction traces contain STAC and CLAC instructions. Not sure if ignoring these two types of instructions will affect synthetic kernel memory addresses.

dolanzhao avatar Jul 08 '22 19:07 dolanzhao