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58 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
TABLE A-7
describes prefetch variants implemented in SPARC64 V.
A.51 Read State Register
In SPARC64 V, an RDPCR instruction will generate a
privileged_action
exception if
PSTATE.PRIV =0 and PCR.PRIV =1. If PSTATE.PRIV =0 and PCR.PRIV =0,
RDPCR will not cause any access privilege violation exception (impl. dep. #250).
A.70 SHUTDOWN (VIS I)
In SPARC64 V, SHUTDOWN acts as a NOP in privileged mode (impl. dep. #206).
TABLE A-7
Prefetch Variants
fcn Fetch to: Status Description
0L1D S
1L2 S
2L1D M
3L2 M
4 ——NOP
5-15 reserved (SPARC V9)
illegal_instruction
exception is signalled.
16-19 implementation
dependent.
NOP
20 L1D S If an access causes an mTLB miss,
fast_data_access_MMU_miss
exception is signalled.
21 L2 S If an access causes an mTLB miss,
fast_data_access_MMU_miss
exception is signalled.
22 L1D M If an access causes an mTLB miss,
fast_data_access_MMU_miss
exception is signalled.
23 L2 M If an access causes an mTLB miss,
fast_data_access_MMU_miss
exception is signalled.
24-31 implementation
dependent
NOP