Форум РадиоКот

Код: Выделить всё

   1223
   1224          static
   1225          unsigned short MCrc2(unsigned char *str, int len) {
   1226          int i, k;
   1227          unsigned short s, d = 0x90f1;
   1228
   1229            for(k = 0; k < len; k++) {
   1230              d ^= str[k];
   1231              for( i = 0; i < 8; i++) {
   1232                s = d & 1;
   1233                d = d >> 1;
   1234                if (s) d ^=  0xA001;
   1235              }
   1236            }
   1237            d = d ^ 0xFFFF;
   1238          return d;
   1239          }
   1240
   1255
   1256          unsigned short GetCrc2(void *data, int len)
   1257          {
   1258              return MCrc2((unsigned char*)data, len);
   \                     GetCrc2:
   \   000000 581B          CP.w      R11,0x1
   \   000002 E06990F1      MOV       R9,0x90f1
   \   000006 C115          BRLT      ??GetCrc2_0:C
   \                     ??GetCrc2_1:
   \   000008 193A          LD.ub     R10,R12++
   \   00000A 3088          MOV       R8,0x8
   \   00000C 1459          EOR       R9,R10
   \   00000E 5C79          CASTU.h   R9
   \                     ??GetCrc2_2:
   \   000010 F5D9C001      BFEXTU    R10,R9[0:0]
   \   000014 F3D9C030      BFEXTU    R9,R9[16:1]
   \   000018 580A          CP.w      R10,0x0
   \   00001A C030          BREQ      ??GetCrc2_3:C
   \   00001C EC19A001      EORL      R9,0xa001
   \                     ??GetCrc2_3:
   \   000020 2018          SUB       R8,0x1
   \   000022 CF71          BRNE      ??GetCrc2_2:C
   \   000024 201B          SUB       R11,0x1
   \   000026 CF11          BRNE      ??GetCrc2_1:C
   \                     ??GetCrc2_0:
   \   000028 EC19FFFF      EORL      R9,0xffff
   \   00002C F9D9C010      CASTU.h   R12,R9
   \   000030 5EFC          RET       R12
   1259          }
   1260