SEGG | Back to Index page |
Prolog Control Block Contents SEGG DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
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SEGG Prolog | Top of page |
NAME : HCPSEGG DESCRIPTION: z/Architecture Segment Table Entry DSECT : SEGG FUNCTION : There is one segment table entry for each megabyte of address space. A segment table is made up of contiguous segment table entries. The format of the segment table entry is ARCHITECTED and cannot be changed in any way which violates the architecture. RELOCATION CONSIDERATIONS : None NOTES : The segment table entry does not contain a page table length. All page tables represent a full megabyte of virtual storage (256 page table entries). |
SEGG Control Block Content | Top of page |
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SEGG Storage Layout | Top of page |
*** SEGG - z/Architecture Segment Table Entry * * +-------------------------------------------------------+ * 0 | SEGGENTR | * +-------------------------------------------------------+ * *** SEGG - z/Architecture Segment Table Entry *** Overlay for SEGGENTR in SEGG * * +---------------------------+---------------------------+ * 0 | SEG64W0 | SEG64W1 | * +---------------------------+---------------------------+ * 8 * *** Overlay for SEGGENTR in SEGG *** Overlay for SEG64W1 in SEGG * * +-------------+------+------+ * 0 ... 4 |/////////////|:GSTA2|:GSTAT| * +-------------+------+------+ * 8 * *** Overlay for SEG64W1 in SEGG |
SEGG Cross Reference | Top of page |
Symbol Dspl Value -------------- ---- ----- SEGGCOMM 0007 10 SEGGCOMN 0007 10 SEGGENTR 0000 SEGGINVL 0007 20 SEGGINVM 0007 20 SEGGLEN 0000 00000008 SEGGNEXT 0008 SEGGPROM 0007 SEGGSTAT SEGGPROT 0006 02 SEGGPTMH 0007 SEGGSTAT SEGGPTML 0007 SEGGSTAT SEGGPTUN 0007 SEGGSTAT SEGGPTUS 0007 0B SEGGPXDS 0007 09 SEGGPXNUM 0007 08 SEGGPXRIT 0007 FF SEGGSHFT 0007 14 SEGGSTAT 0007 SEGGSTA2 0006 SEGGTTBT 0007 0C SEGG2GMH 0007 SEGGSTAT SEGG2GML 0007 00 SEG64W0 0000 SEG64W1 0004 |
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