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76 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
206 SHUTDOWN instruction
In privileged mode the SHUTDOWN instruction executes as a NOP in
SPARC64 V
.
58
207 PCR register bits 47:32, 26:17, and bit 3
SPARC64 V
uses these bits for the following purposes:
• Bits 47:32 for set/clear/show status of overflow (OVF).
• Bit 26 for validity of OVF field (OVRO).
• Bits 24:22 for number of counter pair (NC).
• Bits 20:18 for counter selector (SC).
• Bit 3 for validity of SU/SL field (ULRO).
Other implementation-dependent bits are read as 0 and writes to them are
ignored.
20, 21,
201
208 Ordering of errors captured in instruction execution
The order in which errors are captured during instruction execution is
implementation dependent. Ordering can be in program order or in order of
detection.
—
209 Software intervention after instruction-induced error
Precision of the trap to signal an instruction-induced error for which
recovery requires software intervention is implementation dependent.
—
210 ERROR output signal
The causes and the semantics of ERROR output signal are implementation
dependent.
—
211 Error logging registers’ information
The information that the error logging registers preserves beyond the reset
induced by an ERROR signal is implementation dependent.
—
212 Trap with fatal error
Generation of a trap along with ERROR signal assertion upon detection of a
fatal error is implementation dependent.
—
213 AFSR.PRIV
SPARC64 V
does not implement the AFSR.PRIV bit.
—
214 Enable/disable control for deferred traps
SPARC64 V
does not implement a control feature for deferred traps.
—
215 Error barrier
DONE and RETRY instructions may implicitly provide an error barrier
function as MEMBAR #Sync. Whether DONE and RETRY instructions provide
an error barrier is implementation dependent.
—
216
data_access_error
trap precision
data_access_error
trap is always precise in
SPARC64 V
.
—
217
instruction_access_error
trap precision
instruction_access_error
trap is always precise in
SPARC64 V
.
—
TABLE C-1
SPARC64 V Implementation Dependencies (7 of 11)
Nbr SPARC64 V Implementation Notes Page