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Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only. |
ALET
Cross Reference (Contains links to field and bit definitions)
ALET Prolog
Name : HCPALET
Description: Access List Entry Token
DSECT : ALET
Function : The ALET maps the contents of an access register
referred to as an Access List Entry Token.
In the general case they designate an entry
in an access list and are used in access register
translation.
Located by : Maps the contents of an access register
Created by : ALETs designating entries in access lists built by
CP are created by HCPALMCR.
Deleted by : ALETs designating entries in access lists built by
CP are deleted by HCPALMCR.
Serialized : This DSECT is to map guest storage, the
user of the DSECT is responsible for serialization.
ALETs designating entries in access lists biult by
CP are generally serialized by task ownership.
ALET Control Block Content
ALET DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure ALET Access List Entry Token List Entry Token 0000 0 Bitstring 4 * (0) .... .... ALETZERM X'FE000000' Mask of bits which must be zeros .... .... ALETPSM X'01000000' Mask for primary-list bit 00FF0000 ALETASNM X'00FF0000' Mask for ALE sequence number 0000FFFF ALETALNM X'0000FFFF' Mask for access-list entry number. .... .... ALETPRIM X'00000000' Special ALET for primary space .... ...1 ALETSECO X'00000001' Special ALET for secondary space 0000 0 Bitstring 1 ALET0 .... ...1 ALETPRL X'01' Primary-list bit Specifies which Access List(AL) contains the ALE 0 - Dispatchable Unit AL 1 - Primary space AL 0001 1 Bitstring 1 ALETSN Access list entry sequence number 0002 2 Signed 2 ALETEN Access list entry number 00000004 ALETLEN *-ALET Entry size in bytes 00000001 ALETSIZE (ALETLEN+7)/8 Size in doublewords of the ALET
ALET Storage Layout
*** ALET - Access List Entry Token * * +------+------+-------------+ * 0 |ALET0 |ALETSN| ALETEN | 4 * +------+------+-------------+ * *** ALET - Access List Entry Token
ALET Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----ALETALNM 0000 0000FFFF
ALETASNM 0000 00FF0000
ALETEN 0002
ALETLEN 0002 00000004
ALETPRIM 0000 00
ALETPRL 0000 01
ALETPSM 0000 00
ALETSECO 0000 01
ALETSIZE 0002 00000001
ALETSN 0001
ALETZERM 0000 00
ALET0 0000
Last updated on 3 Aug 1999 at 11:39:18 EDT.
Copyright IBM Corporation, 1990, 1999