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98 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
The specification of bits 24:0 in the SPARC64 V SFSR conforms to the specification
defined in Section F.10.9 in Commonality. Bits 63:25 in SPARC64 V SFSR are
implementation dependent.
TABLE F-5
describes the I-SFSR bits, and
TABLE F-5
describes the D-SFSR bits.
TABLE F-5
I
-SFSR
Bit Description
Bits Field Name RW Description
Data<63:62 > TLB# R/W Faulty TLB# log. Recorded upon an mITLB error to identify the faulty TLB
(fITLB: 00
2
or sITLB: 10
2
). The priority of error logging for multiple error
conditions (parity error and multiple-hit error) is as follows:
fTLB parity high
sTLB
sTLB multihit
fTLB multihit low
Data <59:49> index R/W Faulty TLB index log. Recorded upon an mITLB error and is the index
number for the faulty TLB. The priority of error logging for multiple error
conditions (parity error and multiple-hit error) is as follows:
fTLB parity high
sTLB parity
sTLB multihit
fTLB multihit low
The smallest index number is selected for multiple hits.
Data <46> MK R/W Marked
UE
. On SPARC64 V, all uncorrectable errors are reported as
marked, so this bit is always set whenever ISFSR.UE =1.
See Section P.2.4, Error Marking for Cacheable Data Error, on page 157 for
details.
Data <45:32> EID R/W Error mark ID. Valid for a marked UE.
See Section P.2.4, Error Marking for Cacheable Data Error, on page 157 for
ERROR_MARK_ID.
Data <31> UE R/W Instruction error status; uncorrectable error. When UE =1, an uncorrectable
error in a fetched instruction word has been detected. Valid only for an
instruction_access_error
exception.
Data <30:29> UPA<1:0> R/W UPA error status. Either a bus error response (UPA<1>) or a timeout
response (UPA<0>) has been received from an instruction fetch transaction
from UPA. Valid only for an
instruction_access_error
exception.
Data <27:26> mITLB<1:0> R/W mITLB error status. Either a multiple-hit status (mITLB<1>) or a parity
error status (mITLB<0>) has been encountered upon a mITLB lookup. Valid
only for an
instruction_access_error
exception.
Data <25> NC R/W Noncacheable reference. The reference that has invoked an exception is a
noncacheable reference. Valid for an
instruction_access_error
exception
caused by ISFSR.UE or ISFSR.UPA only. For other causes of the trap, the
value is unknown.
Data <23:16> ASI<7:0> R/W ASI. The 8-bit address space identifier applied to the reference that has
invoked an exception. This field is valid for the exception in which the
ISFSR.FV bit is set.
A recorded ASI is 80
16
(ASI_PRIMARY) or 04
16
(ASI_NUCLEUS) depending
on the trap level (when TL >0, the ASI is ASI_NUCLEUS.).