GETFIELD         Get record field value                             Extension

  GETFIELD field_name destination_reg, source_r/m

    Generates code that retrieves the value of a field found in the same
    source register or memory address, and sets the destination to that
    value.

    GETFIELD retrieves the value of a field found in the source register
    or memory address, and set the pertinent portion of the destination
    register to that value. This instruction affects no other registers
    than the operating register and the processor flags.

    To accomplish its function, GETFIELD uses a series of MOV, XCHG, ROL,
    and ROR instructions. If you're using GETFIELD when your source and
    target registers are the same, the instruction will not generate the
    non-functional 'MOV target, source'.


    Example:    RECORD foo r0:1,r1:4,r2:3,r3:1
                getfield r1 bl,ax           ; (bx changed)