Fujitsu Fujitsu SPARC64 V IMPDEPn instructions, Unimplemented LDD trap, Unimplemented STD trap

TABLE C-1SPARC64 V Implementation Dependencies		(5 of 11)
Nbr	SPARC64 V Implementation Notes	Page
106	IMPDEPn instructions	49
	SPARC64 V uses the IMPDEP2 opcode for the Multiply Add/Subtract
	instructions. SPARC64 V also conforms to Sun’s specification for VIS-1 and
	VIS-2.
107	Unimplemented LDD trap	—
	SPARC64 V implements LDD in hardware.
108	Unimplemented STD trap	—
	SPARC64 V implements STD in hardware.
109	LDDF_mem_address_not_aligned	—
	If the address is word aligned but not doubleword aligned, SPARC64 V
	generates the LDDF_mem_address_not_aligned exception. The trap handler
	software emulates the instruction.
110	STDF_mem_address_not_aligned	—
	If the address is word aligned but not doubleword aligned, SPARC64 V
	generates the STDF_mem_address_not_aligned exception. The trap handler
	software emulates the instruction.
111	LDQF_mem_address_not_aligned	—
	SPARC64 V generates an illegal_instruction exception for all LDQFs. The
	processor does not perform the check for fp_disabled. The trap handler
	software emulates the instruction.
112	STQF_mem_address_not_aligned	—
	SPARC64 V generates an illegal_instruction exception for all STQFs. The
	processor does not perform the check for fp_disabled. The trap handler
	software emulates the instruction.
113	Implemented memory models	42
	SPARC64 V implements Total Store Order (TSO) for all the memory models
	specified in PSTATE.MM. See Chapter 8, Memory Models, for details.
114	RED_state trap vector address (RSTVaddr)	36
	RSTVaddr is a constant in SPARC64 V, where:
	VA=FFFF FFFF F000 000016 and
	PA=07FF F000 000016
115	RED_state processor state	36
	See RED_state on page 36 for details of implementation-specific actions in
	RED_state.
116	SIR_enable control flag	—
	See Section A.60 SIR in Commonality for details.
117	MMU disabled prefetch behavior	91

Prefetch and nonfaulting Load always succeed when the MMU is disabled.

118 Identifying I/O locations—

This dependency is beyond the scope of this publication. It should be defined in a system that uses SPARC64 V.

74 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002