FUJITSU Implementation Supplement Fujitsu SPARC64 V - Manual (Page 81)

70 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
C.2 Hardware Characteristics
Please refer to Section C.2 of Commonality.
C.3 Implementation Dependency Categories
Please refer to Section C.3 of Commonality.
C.4 List of Implementation Dependencies
TABLE C-1 provides a complete list of how each implementation dependency is
treated in the SPARC64 V implementation.
TABLE C-1 SPARC64 V Implementation Dependencies (1 of 11)
Nbr SPARC64 V Implementation Notes Page
1 Software emulation of instructions
The operating system emulates all instructions that generate
illegal_instruction or unimplemented_FPop exceptions.
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2 Number of IU registers
SPARC64 V supports eight register windows ( NWINDOWS = 8).
SPARC64 V supports an additional two global register sets (Interrupt
globals and MMU globals) for a total of 160 integer registers.
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3 Incorrect IEEE Std 754-1985 results
See Section B.6, Floating-Point Nonstandard Mode, on page 61 for details. 62
4–5 Reserved.
6 I/O registers privileged status
This dependency is beyond the scope of this publication. It should be
defined in each system that uses
SPARC64 V .
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7 I/O register definitions
This dependency is beyond the scope of this publication. It should be
defined in each system that uses
SPARC64 V .
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8 RDASR / WRASR target registers
See A.50 and A.70 in Commonality for details of implementation-dependent
RDASR / WRASR instructions.
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