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(* x86instr-ext.sml
*
* COPYRIGHT (c) 2000 Bell Labs, Lucent Technologies
*
* extensions to the x86 instruction set.
*)
structure X86InstrExt = struct
datatype fsz = single | double | extended
datatype ('s, 'r, 'f, 'c) sext
(* push an integer value onto the H/W stack *)
= PUSHL of 'r
| POP of 'r
(* FSTPS/L/T is a way of pulling things off the floating point
* stack and must therefore take FREG f as argument
*)
| FSTPS of 'f
| FSTPL of 'f
| FSTPT of 'f
| LEAVE
| RET of 'r
| LOCK_CMPXCHGL of ('r * 'r)
| PAUSE (* improves performance of spin-wait loops *)
(* performs a serializing operation on all load-from-memory and store-to-memory
* operations issued prior to the mfence instruction.
*)
| MFENCE
(* performs a serializing operation on all load-to-memory operations issued prior to
* the lfence instruction.
*)
| LFENCE
(* performs a serializing operation on all store-to-memory operations issued prior to
* the sfence instruction.
*)
| SFENCE
end
|
