Fujitsu SPARC64 V Manual Do Utilizador
124
SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
Last Barrier Synchronization Status Read (
ASI_LBSYR0
,
ASI_LBSYR1
)
ASI_LBSYRx
is a read interface to the copy of
LBSY
. A write to
ASI_LBSYRx
is
ignored.
Barrier State Write (
ASI_BSTW0
,
ASI_BSTW1
)
ASI_BSTW
x is a write interface to
LBSY
on the SB. On read, 0 is returned.
[1]
Register Name:
ASI_LBSYR0
,
ASI_LBSYR1
[2]
ASI:
EF
16
[3]
VA:
00
16
(
ASI_LBSYR0
), 08
16
(
ASI_LBSYR1
).
[4]
RW
Read (Write is ignored)
Bit
Name
RW
Description
0
RV
R
Read value. The bit designated by
ASI_C_LBSYR
x is shown.
[1]
Register Name:
ASI_BSTW0
,
ASI_BSTW1
[2]
ASI:
EF
16
[3]
VA:
80
16
(
ASI_BSTW0
), 88
16
(
ASI_BSTW1
).
[4]
RW
Write (0 is returned on read)
Bit
Name
RW
Description
0
WV
W
Write value. The bit designated by
ASI_C_BSTW
x is written.