Function core::arch::x86_64::__get_cpuid_max
1.27.0 · source · pub unsafe fn __get_cpuid_max(leaf: u32) -> (u32, u32)
Available on x86-64 and (x86 or x86-64) only.
Expand description
Returns the highest-supported leaf
(EAX
) and sub-leaf (ECX
) cpuid
values.
If cpuid
is supported, and leaf
is zero, then the first tuple argument
contains the highest leaf
value that cpuid
supports. For leaf
s
containing sub-leafs, the second tuple argument contains the
highest-supported sub-leaf value.
See also __cpuid
and
__cpuid_count
.