OpenSolaris

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Bug ID 6719310
Synopsis Expose availability of MOVBE instruction
State 10-Fix Delivered (Fix available in build)
Category:Subcategory kernel:arch-x86
Keywords SFO | atom
Responsible Engineer Krishnendu Sadhukhan
Reported Against snv_105
Duplicate Of
Introduced In
Commit to Fix snv_106
Fixed In snv_106
Release Fixed solaris_nevada(snv_106)
Related Bugs 6714688 , 6719311
Submit Date 25-June-2008
Last Update Date 16-January-2009
Description 
The MOVBE instruction flips the byte order of a 32 or 64-bit word (see byteorder(3SOCKET)). However, only some architectures support this instruction so far (CPUID indicates this). See The Intel 64 and IA-32 Architectures Software Developer's Manual (Volume 2A Instruction Set Reference, April 2008).

Solaris should detect and expose the availability of this instruction. For example, "isainfo -x" should indicate this new instruction is supported.
Work Around 
N/A
Comments 
N/A