FUJITSU Implementation Supplement Fujitsu SPARC64 V - Manual (Page 135)

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.