> AFAIK, the feature bits are not in the CVT, but only in PSA, beginning
> at decimal 200. That's where the STFL instruction stores them.
>
> And for another wrinkle, there is at least one facility bit on the z13
that
> is not in that list because it is beyond the 16 bytes that are reserved
in
> the PSA or the facility bits.
>
> For that facility bit, and possibly for facility bits on future
processors,
> you will need to issue STFLE yourself, unless MVS stores them
> somewhere else that I am not aware of.
In z/OS 2.2 (and APAR OA43366 on z/OS 2.1), we annexed the
16 bytes of formerly reserved space that followed the STFL area so
that we can do an STFLE for 32 bytes.
BROWSE SYS1.MACLIB(IHAPSAE) Line 0000000425 Col
Command ===> Scroll ==
FLCEFACILITIESLIST1 DS CL16 FLCE D8x: Facilities list stored by STFLE. *
It is valid if on z/OS 2.2 or later. See *
macro IHAFACL for a more complete definition *
of the facilities list. This 16-byte area *
matches the area mapped by FaclBytes16To31 *
within IHAFACL.
And yes, there is stuff in there:
BROWSE SYS1.MACLIB(IHAFACL) Line 0000000298 Col
Command ===> Scroll ==
FaclBytes16To31 DS CL16
ORG FaclBytes16To31
FaclByte16 DS B Bits 128-135
* Bit definitions:
FACL_DelayFacility EQU X'80' Bit 128
Facl_VectorExtensionFacility EQU X'40' Bit 129. Even if this bit is *
on, do not use the VEF unless bit *
CVTVEF is on.
FaclZ1 EQU X'40' Bit 129
FACL_IFSuppressionFacility EQU X'20' Bit 130
FACL_SideEffectFacility EQU X'10' Bit 131
FACL_CloseFacility EQU X'08' Bit 132
FACL_TimerIntSuppressionFacility EQU X'04' Bit 133
FACL_RTI_FCModFacility EQU X'02' Bit 134
FaclByte17 DS B Bits 136-143
* Bit definitions:
FACL_SharedTLB EQU X'80' Bit 136
FACL_TODClockEpochFacility EQU X'10' Bit 139
FACL_StoreCpuCtrMultiple EQU X'02' Bit 142
FACL_ScaledCpuTimer EQU X'01' Bit 143
Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY
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