z/VM: CP Commands and Utilities Reference - z/VM - IBM

STORE PSW
►►
STore
Authorization
Purpose
Psw
Operands
Usage Notes
Responses
hexword1
Privilege Class: G
Use STORE PSW to alter the program status word (PSW).
PSW
hexword2
For an ESA/390 or ESA/XC guest:
alters all or part of the PSW with the data you specify in hexword1 and
hexword2. If you specify only hexword2, it is stored in the second word of your
virtual machine’s current PSW. If you specify both hexword1 and hexword2,
hexword1 is stored in the first word of your virtual machine’s current PSW, and
hexword2 is stored into the address portion of the PSW.
For a z/Architecture guest:
This is allowed only if a SET PSWTRANS ALL/STORE command has
previously been issued for the virtual machine. If the appropriate SET
PSWTRANS command has been issued, the hexwords are converted from an
ESA/390-format PSW into a z/Architecture-format PSW as indicated below:
If only hexword2 is specified, the z/Architecture PSW is stored as follows:
v bit 32 = hexword2 bit 0
v bits 33-96 = 0
v bits 97-127 = hexword2 bits 1-31
v rest of bits remain unchanged
If you specify hexword1 hexword2, the z/Architecture PSW is stored as follows:
v bits 0-31 = hexword1 (bit 12 is set to 0)
v bit 32 = 1 if hexword1 bit 31 is 1 otherwise, this bit will be set to hexword2 bit
0
v bits 33-96 = 0
v bits 97-127 = hexword2 bits 1-31
hexword...
identifies the data you want to store in the PSW. If the data is less than eight
digits (four bytes), it is right-adjusted and padded with leading zeros.
1. To specify a 128-bit PSW, use the STORE PSWG command.
Response 1:
Store complete
STORE PSW
►◄
Chapter 2. CP Commands 1551