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      1 %default {"preinstr":"", "result0":"a0", "result1":"a1", "chkzero":"0", "arg0":"a0", "arg1":"a1", "arg2":"a2", "arg3":"a3"}
      2     /*
      3      * Generic 64-bit "/2addr" binary operation.  Provide an "instr" line
      4      * that specifies an instruction that performs "result = a0-a1 op a2-a3".
      5      * This could be a MIPS instruction or a function call.  (If the result
      6      * comes back in a register other than a0, you can override "result".)
      7      *
      8      * If "chkzero" is set to 1, we perform a divide-by-zero check on
      9      * vCC (a1).  Useful for integer division and modulus.
     10      *
     11      * For: add-long/2addr, sub-long/2addr, div-long/2addr, rem-long/2addr,
     12      *      and-long/2addr, or-long/2addr, xor-long/2addr
     13      *      rem-double/2addr
     14      */
     15     /* binop/2addr vA, vB */
     16     GET_OPA4(rOBJ)                         #  rOBJ <- A+
     17     GET_OPB(a1)                            #  a1 <- B
     18     EAS2(a1, rFP, a1)                      #  a1 <- &fp[B]
     19     EAS2(rOBJ, rFP, rOBJ)                  #  rOBJ <- &fp[A]
     20     LOAD64($arg2, $arg3, a1)               #  a2/a3 <- vBB/vBB+1
     21     LOAD64($arg0, $arg1, rOBJ)             #  a0/a1 <- vAA/vAA+1
     22     .if $chkzero
     23     or        t0, $arg2, $arg3             #  second arg (a2-a3) is zero?
     24     beqz      t0, common_errDivideByZero
     25     .endif
     26     FETCH_ADVANCE_INST(1)                  #  advance rPC, load rINST
     27 
     28     $preinstr                              #  optional op
     29     $instr                                 #  result <- op, a0-a3 changed
     30     GET_INST_OPCODE(t0)                    #  extract opcode from rINST
     31     STORE64($result0, $result1, rOBJ)      #  vAA/vAA+1 <- $result0/$result1
     32     GOTO_OPCODE(t0)                        #  jump to next instruction
     33     /* 12-15 instructions */
     34 
     35