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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. |
LNGBK
Cross Reference (Contains links to field and bit definitions)
LNGBK Prolog
NAME : HCPLNGBK
DESCRIPTION: Language Information Block
STATUS : VM/ESA Version 2, Release 1.0
DSECT : LNGBK
FUNCTION : Contains information about the message repository.
LOCATED BY : SYSLANG LNGBK chain anchor
VMDLANG Pointer to the LNGBK
LNGNEXT Forward pointer
LNGBACK Backward pointer
CREATED BY : HCPNLS At initialization for the default
MESSAGE repository (HCPMES).
HCPNLS When the first user is connected
to a message repository.
DELETED BY : HCPNLS When the user count of the message repository
is zero the associated LNGBK is deleted.
REFERENCES : HCPICRBK - Indirect Call Request Block
SERIALIZED :
Created and destroyed only when the SYSLNGLK lock
is held exclusive.
Searched only when the LNGLOCK lock is held shared.
LNGBK Control Block Content
LNGBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure LNGBK Language Information Block 0000 0 Address 4 LNGNEXT Address of next LNGBK 0004 4 Address 4 LNGBACK Address of previous LNGBK Notes : If there is only one LNGBK, then this field will have the same address as "LNGNEXT" in it. 0008 8 Dbl-Word 8 LNGLOCK (3) Purge LNGBK lock. If both the LNGBK queue lock (SYSLNGBK), and the LNGBK lock (LNGLOCK), must be acquired, one must acquire them in this order: SYSLNGBK, then LNGLOCK 0022 34 Bitstring 1 LNGFLAG Language flag byte 1... .... LNGDBCS X'80' Double-byte character set. Notes : LNGDBCS is originally set by the compiler if the language uses the double-byte character set. .... ..1. LNGPAGBL X'02' The entry point name LNGEPNAM is in CP pageable storage. .... ...1 LNGSKIP X'01' For HCPERM: skip this LNGBK at the moment because it is being manipulated, therefore is not complete, and we don't want to get into a deadly embrace of multiple acquisitions of the LNGLOCK. 0023 35 Bitstring 1 * Reserved 0024 36 Address 4 LNGIMGBK Address of imgbk 0028 40 Character 5 LNGLANG Language identifier 002D 45 Character 3 LNGCOMP Component identifier 0030 48 Signed 4 LNGCNT User count 0034 52 Address 4 LNGLBX Address of LBXBK 0038 56 Address 4 * Reserved 003C 60 Address 4 LNGEPADR Virtual address of LNGEPNAM. For its real address, use the page pointers in the LBXBK. 0040 64 Bitstring 16 LNGICR (0) The ICRBK fields 0040 64 Character 8 LNGEPNAM Associated epname 0048 72 Address 4 LNGADDRL Address of ICLBK 004C 76 Bitstring 1 LNGATTR Attributes of epname ...1 .... ICRESTA X'10' callee uses static savearea .... 1... ICRRMP X'08' caller MP capable .... .1.. ICRERES X'04' callee Resident .... ..1. ICREMP X'02' callee MP capable .... ...1 ICRTRC X'01' issue TRACE instruction 004D 77 Bitstring 1 LNGF1 Attributes .... ...1 ICRNLOSS X'01' HCPCALL TYPE=INDIRECT must not result in loss of control 004E 78 Bitstring 1 * (2) Reserved 0050 80 Dbl-Word 8 LNGUSRD1 Reserved for non-IBM use 0058 88 Dbl-Word 8 LNGUSRD2 Reserved for non-IBM use 0060 96 Signed 4 LNGUSRF1 Reserved for non-IBM use 0064 100 Signed 4 LNGUSRF2 Reserved for non-IBM use 0068 104 Signed 2 LNGUSRH1 Reserved for non-IBM use 006A 106 Signed 2 LNGUSRH2 Reserved for non-IBM use 006C 108 Bitstring 1 LNGUSRX1 Reserved for non-IBM use 006D 109 Bitstring 1 LNGUSRX2 Reserved for non-IBM use 006E 110 Bitstring 1 LNGUSRX3 Reserved for non-IBM use 006F 111 Bitstring 1 LNGUSRX4 Reserved for non-IBM use 0000000E LNGSIZE (*-LNGBK+7)/8 Size of the LNGBK
LNGBK Storage Layout
*** LNGBK - Language Information Block * * +---------------------------+---------------------------+ * 0 | LNGNEXT | LNGBACK | * +---------------------------+---------------------------+ * 8 | | * = LNGLOCK = * | | * +-------------+------+------+---------------------------+ * 20 |/////////////|:FLAG |//////| LNGIMGBK | * +-------------+------+------+------+--------------------+ * 28 | LNGLANG | LNGCOMP | * +---------------------------+------+--------------------+ * 30 | LNGCNT | LNGLBX | * +---------------------------+---------------------------+ * 38 |///////////////////////////| LNGEPADR | * +---------------------------+---------------------------+ * 40 | LNGEPNAM | * +---------------------------+------+------+-------------+ * 48 | LNGADDRL |:ATTR |LNGF1 |/////////////| * +---------------------------+------+------+-------------+ * 50 | LNGUSRD1 | * +-------------------------------------------------------+ * 58 | LNGUSRD2 | * +---------------------------+---------------------------+ * 60 | LNGUSRF1 | LNGUSRF2 | * +-------------+-------------+------+------+------+------+ * 68 | LNGUSRH1 | LNGUSRH2 |:USRX1|:USRX2|:USRX3|:USRX4| * +-------------+-------------+------+------+------+------+ * 70 * *** LNGBK - Language Information Block
LNGBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----ICREMP 004C 02
ICRERES 004C 04
ICRESTA 004C 10
ICRNLOSS 004D 01
ICRRMP 004C 08
ICRTRC 004C 01
LNGADDRL 0048
LNGATTR 004C
LNGBACK 0004
LNGCNT 0030
LNGCOMP 002D
LNGDBCS 0022 80
LNGEPADR 003C
LNGEPNAM 0040
LNGFLAG 0022
LNGF1 004D
LNGICR 0040
LNGIMGBK 0024
LNGLANG 0028
LNGLBX 0034
LNGLOCK 0008
LNGNEXT 0000
LNGPAGBL 0022 02
LNGSIZE 006F 0000000E
LNGSKIP 0022 01
LNGUSRD1 0050
LNGUSRD2 0058
LNGUSRF1 0060
LNGUSRF2 0064
LNGUSRH1 0068
LNGUSRH2 006A
LNGUSRX1 006C
LNGUSRX2 006D
LNGUSRX3 006E
LNGUSRX4 006F
Last updated on 3 Aug 1999 at 12:11:06 EDT.
Copyright IBM Corporation, 1990, 1999