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      1     /*
      2      * Generic 64bit-to-32bit unary floating point operation.  Provide an
      3      * "instr" line that specifies an instruction that performs "s0 = op d0".
      4      *
      5      * For: double-to-int, double-to-float
      6      */
      7     /* unop vA, vB */
      8     mov     r3, rINST, lsr #12          @ r3<- B
      9     VREG_INDEX_TO_ADDR r3, r3           @ r3<- &vB
     10     fldd    d0, [r3]                    @ d0<- vB
     11     ubfx    r9, rINST, #8, #4           @ r9<- A
     12     FETCH_ADVANCE_INST 1                @ advance rPC, load rINST
     13     $instr                              @ s0<- op
     14     GET_INST_OPCODE ip                  @ extract opcode from rINST
     15     VREG_INDEX_TO_ADDR r9, r9           @ r9<- &vA
     16     fsts    s0, [r9]                    @ vA<- s0
     17     GOTO_OPCODE ip                      @ jump to next instruction
     18