zosd2.asm

一个TIDM642DSP处理器测试程序

     .global _osd
_osd:  lddw .d2 *b4++,a29:a28
   
   || mv .s2 b4,b5
      lddw .d1 *a4++,a31:a30
   || lddw .d2 *b4++,b29:b28    ;++++1
   || zero .l1 a9
   || mv .s1 a4,a5
   
   
   ; lddw .d2 *b4++,b29:b28
   ;|| lddw .d1 *a4++,b31:b30
      lddw .d1 *a4++,b31:b30    ;++++1
      nop 2
      ;Get a29,a28 (mask64_1)
      cmpeq4 .s1 a9,a29,a27
      ;Get a31,a30 (src64_1);Get b29,b28(mask64_2)
      xpnd4  .m1 a27,a25
   || cmpeq4 .s1 a9,a28,a26
   || cmpeq4 .s2 a9,b29,b27 ;+++++1
      ;Get b31,b30 (src64_2)
      and .l1 a25,a31,a31
   || xpnd4  .m1 a26,a24
   || xpnd4  .m2 b27,b25     ;+++++1
   || cmpeq4 .s2 a9,b28,b26  ;+++++1
      or  .l1 a29,a31,a31
   || and .s1 a24,a30,a30
   || and .l2 b25,b31,b31    ;+++++1
   || xpnd4  .m2 b26,b24     ;+++++1
      or  .l1 a28,a30,a30
   || or  .l2 b29,b31,b31    ;+++++1
   || and .s2 b24,b30,b30    ;+++++1
      stdw .d1 a31:a30,*a5++
   || or  .l2 b28,b30,b30    ;+++++1
      stdw .d1 b31:b30,*a5++
      nop 3
         
      b .s2 b3
      nop 5