Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
MIHDR
Control Block Contents
MIHDR DSECT
Cross Reference (Contains links to field and bit definitions)
MIHDR Prolog
NAME : HCPMIHDR DESCRIPTION: MISSING INTERRUPT HANDLER HEADER BLOCK DSECT : MIHDR FUNCTION : THE MIHDR CONTAINS THE GENERAL INFORMATION THAT PERTAINS TO THE HANDLING OF MISSING INTERRUPT CONDITIONS. IN ADDITION, IT ACTS AS THE ANCHOR FOR THE CHAIN OF HCPMIOBJS. LOCATED BY : IORMIPTR FIELD OF IORBK - BLOCKS USED FOR HANDLING MISSING INTERRUPT CONDITIONS CREATED BY : MIHDR'S ARE DYNAMICALLY CREATED BY HCPMHLAT. DELETED BY : MIHDR'S ARE DELETED BY HCPMHLDT WHEN THERE ARE NO MORE MIOBJ'S ASSOCIATED WITH THE MIHDR. RELOCATION CONSIDERATIONS : None
MIHDR Control Block Content
MIHDR DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure MIHDR MISSING INTERRUPT HANDLER HEADER BLOCK 0000 0 Signed 4 MIRTRYCT RETRY COUNT 0004 4 Address 4 MIOBJPTR ADDRESS OF FIRST MIOBJ IN CHAIN 0008 8 Address 4 MIORGIRA THE ORIGINAL IRA VALUE 000C 12 Address 4 * Reserved for Future IBM use 0010 16 Address 4 MIORGPIO ORIGINAL IORPIOR VALUE 0014 20 Bitstring 1 MICSCH MI on CSCH recovery counter 0015 21 Bitstring 1 MIHFLAG MIH Control Flag 1... .... MIHPEND X'80' MIHPEND Notification task is currently Queued 0016 22 Bitstring 1 * (2) Reserved for future IBM use 00000003 MIHDSIZE (*-MIHDR+7)/8 MIHDR SIZE IN DOUBLE-WORDS
MIHDR Storage Layout
*** MIHDR - MISSING INTERRUPT HANDLER HEADER BLOCK * * +---------------------------+---------------------------+ * 0 | MIRTRYCT | MIOBJPTR | * +---------------------------+---------------------------+ * 8 | MIORGIRA |///////////////////////////| * +---------------------------+------+------+-------------+ * 10 | MIORGPIO |MICSCH|:FLAG |/////////////| * +---------------------------+------+------+-------------+ * 18 * *** MIHDR - MISSING INTERRUPT HANDLER HEADER BLOCK
MIHDR Cross Reference
Symbol Dspl Value -------------- ---- ----- MICSCH 0014 MIHDSIZE 0016 00000003 MIHFLAG 0015 MIHPEND 0015 80 MIOBJPTR 0004 MIORGIRA 0008 MIORGPIO 0010 MIRTRYCT 0000
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