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TABLE F-9
FT<6:0>
08
16
10
16
20
16
40
16
Multiple bits of DSFSR.FT may be set by a trap as long as the cause of the trap
matches multiply in
DSFSR is updated upon various traps, including f
data_access_exception
privileged_action
shows the detailed update policy of each field.
Update Policy
DSFSR
TABLE F-10
Field
Miss
MMU miss
Access exception
Exception
Access protection
PA watchpoint
Faults
VA watchpoint
Privileged action
Access misaligned
Access error
Exception on fault
Fault on exception
7
Exception on miss
Fault on miss
Release 1.0, 1 July 2002
MMU Synchronous Fault Status Register FT (Fault Type) Field (Continued)
Error Description
An attempt was made to access an alternate address space with an illegal ASI
value, an illegal VA, an invalid read/write attribute, or an illegally sized
operand. If the quad load ASI is used with the other opcode than LDDA, this bit
is set.
Note: Since an illegal ASI check is done prior to a TTE unmatch check,
DSFSR.FT<3> = 1 causes the value of other bits of DSFSR.FT to be
undetermined and generates a
otherwise has lower priority than
Note, too, that a reference to an internal ASI may generate a
mem_address_not_aligned exception.
Access other than nonfaulting load was made to a page marked NFO. This bit is
zero for internal ASI accesses.
Reserved, since there is no virtual hole.
Reserved, since there is no virtual hole.
.
TABLE F-9
,
fast_data_access_protection
,
mem_address_not_aligned
TLB#,
FV
OW
index
Fresh fault or miss
—
0
0
1
0
—
1
0
—
—
1
0
1
0
—
4
1
0
—
—
1
0
5
1
0
V
Overwrite Policy
K
1
1
4
1
1
U
K
1
K
4
1
K
U
data_access_exception
fast_data_access_MMU_miss
ast_data_access_MMU_miss
,
PA_watchpoint
, and
data_access_error
W, PR,
FT
TM
ASI
1
NF, CT
3
V
—
1
—
V
V
0
V
V
0
V
—
V
—
0
V
V
0
V
—
V
0
V
—
V
—
0
V
V
0
V
—
6
U
U
K
U
U
K
K
U
U
U
1
U
U
K
1
U
F. Chapter F
Memory Management Unit
exception (which
).
,
,
,
VA_watchpoint
traps.
TABLE F-10
UE, UPA,
DSFAR
2
2
mDTLB, NC
, E
—
V
V
—
V
—
—
V
V
—
V
—
—
-
V
V
V
K
U
U
U
K
U
U
U
103
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