Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### VRCHAIN

Prolog

Control Block Contents
VRCHAIN DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### VRCHAIN Prolog

     NAME       : HCPVRCHN
     DESCRIPTION: V=R RESERVED FRAME STACK POINTER MAPPING
     DSECT      : VRCHAIN
     FUNCTION   : MAPS THE POINTERS FROM ONE FRAME TO THE NEXT IN THE V=R
                  RESERVED FRAME STACK.
     LOCATED BY : SYSVRRVM       ANCHOR OF THE V=R RESERVED FRAME STACK
     CREATED BY : HCPIST - DURING SYSTEM INITIALIZATION
     DELETED BY : NONE

#### VRCHAIN Control Block Content

#### VRCHAIN DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      VRCHAIN        V=R RESERVED FRAME STACK POINTER
                                            MAPPING
    0000    0 Signed       4 VRNEXT         POINTER TO NEXT FRAME ON THE
                                            STACK

#### VRCHAIN Storage Layout

    *** VRCHAIN - V=R RESERVED FRAME STACK POINTER MAPPING
    *
    *     +---------------------------+
    *   0 |          VRNEXT           | 4
    *     +---------------------------+
    *
    *** VRCHAIN - V=R RESERVED FRAME STACK POINTER MAPPING

#### VRCHAIN Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    VRNEXT         0000

This information is based on z/VM V4R3.0. Last updated on 30 Apr 2002 at 18:26:57 EDT.
Copyright IBM Corporation, 1990, 2002