This is a collection of Intel®’ IA32® Software Developer's Manuals (URL of the day) and AMD' AMD64 Architecture Programmer's Manual together with the related specifications, application notes, white papers, and change logs. The collection aims to keep all available revisions. It was originally created by Michal Necasek, see OS/2 Museum.

If you have a public document, related to the IA32® specifications and missing from the collection, please mail it to me. The content of this URL and all sub-ULRs is available for convenient bulk download by rsync x86docs password "" (empty).

AUTDB, AUTDZB

Authenticate data address, using key B

This instruction authenticates a data address, using a modifier and key B.

The address is in the general-purpose register that is specified by <Xd>.

The modifier is:

• In the general-purpose register or stack pointer that is specified by <Xn|SP> for AUTDB.
• The value zero, for AUTDZB.

If the authentication passes, the upper bits of the address are restored to enable subsequent use of the address. For information on behavior if the authentication fails, see Faulting on pointer authentication.

Integer
(FEAT_PAuth)

Decode for all variants of this encoding

if !IsFeatureImplemented(FEAT_PAuth) then EndOfDecode(Decode_UNDEF); end; if Z == '1' && Rn != '11111' then EndOfDecode(Decode_UNDEF); end; let auth_combined : boolean = FALSE; let d : integer = UInt(Rd); let n : integer = UInt(Rn); let source_is_sp : boolean = Z == '0' && n == 31;