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[smlnj] View of /sml/trunk/src/MLRISC/x86/instructions/x86instr-ext.sml
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View of /sml/trunk/src/MLRISC/x86/instructions/x86instr-ext.sml

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Revision 600 - (download) (annotate)
Wed Apr 5 20:13:47 2000 UTC (19 years, 4 months ago) by george
File size: 542 byte(s)
  x86 instructions to support c-calls
(* 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
end

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