FUJITSU Implementation Supplement Fujitsu SPARC64 V - Manual (Page 117)

106 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
■ sTLB entry update data:
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New sTLB entry data is designated in stxa data.
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New sTLB entry tag is designated in the I/D TLB Tag Access Register.
■ Restriction between the stxa address and ASI TLB Tag Access Register contents:
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The relation s txa_VA <11:3> = ASI_TAG_ACCESS_REGISTER <21:13 > and
s txa_VA <13> = 0 should be satisfied. Only if this condition is satisfied can the
8-Kbyte sTLB entry be replaced as designated.
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The relation s txa_VA <11:3> = ASI_TAG_ACCESS_REGISTER <30:22 > and
s txa_VA <13> = 1 should be satisfied. Only if this condition is satisfied can the
4-Mbyte sTLB entry be replaced as designated.
■
Otherwise, the stxa instruction is ignored without notification to software.
The preceding restriction is SPARC64 V specific.