K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2019-02-14T13:53:11.449306Z
K 7
svn:log
V 372
Provide userspace versions of do_cpuid() and cpuid_count() on i386.

Some older compilers, when generating PIC code, cannot handle inline
asm that clobbers %ebx (because %ebx is used as the GOT offset
register).  Userspace versions avoid clobbering %ebx by saving it to
stack before executing the CPUID instruction.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

END