sim/testsuite/sim/bfin/s5.s

   1 //  Test  r4 = ROT    (r2 by r3);
   2 # mach: bfin
   3
   4 .include "testutils.inc"
   5         start
   6
   7
   8         R0.L = 0x0001;
   9         R0.H = 0x8000;
  10
  11 // rot
  12 //  left  by 1
  13 // 8000 0001 -> 0000 0002 cc=1
  14         R7 = 0;
  15         CC = R7;
  16         R1 = 1;
  17         R6 = ROT R0 BY R1.L;
  18         DBGA ( R6.L , 0x0002 );
  19         DBGA ( R6.H , 0x0000 );
  20         R7 = CC;
  21         DBGA ( R7.L , 0x0001 );
  22
  23 // rot
  24 //  right by -1
  25 // 8000 0001 -> 4000 0000 cc=1
  26         R7 = 0;
  27         CC = R7;
  28         R1.L = 0xffff;  // check alternate mechanism for immediates
  29         R1.H = 0xffff;
  30         R6 = ROT R0 BY R1.L;
  31         DBGA ( R6.L , 0x0000 );
  32         DBGA ( R6.H , 0x4000 );
  33         R7 = CC;
  34         DBGA ( R7.L , 0x0001 );
  35
  36 // rot
  37 //  right by largest positive magnitude of 31
  38 // 8000 0001 -> a000 0000 cc=0
  39         R7 = 0;
  40         CC = R7;
  41         R1 = 31;
  42         R6 = ROT R0 BY R1.L;
  43         DBGA ( R6.L , 0x0000 );
  44         DBGA ( R6.H , 0xa000 );
  45         R7 = CC;
  46         DBGA ( R7.L , 0x0000 );
  47
  48 // rot
  49 //  right by largest positive magnitude of 31 with cc=1
  50 // 8000 0001 cc=1 -> a000 0000 cc=0
  51         R7 = 1;
  52         CC = R7;
  53         R1 = 31;
  54         R6 = ROT R0 BY R1.L;
  55         DBGA ( R6.L , 0x0000 );
  56         DBGA ( R6.H , 0xe000 );
  57         R7 = CC;
  58         DBGA ( R7.L , 0x0000 );
  59
  60 // rot
  61 //  right by largest negative magnitude of -31
  62 // 8000 0001 -> 0000 0005 cc=0
  63         R7 = 0;
  64         CC = R7;
  65         R1 = -31;
  66         R6 = ROT R0 BY R1.L;
  67         DBGA ( R6.L , 0x0005 );
  68         DBGA ( R6.H , 0x0000 );
  69         R7 = CC;
  70         DBGA ( R7.L , 0x0000 );
  71
  72 // rot
  73 //  right by largest negative magnitude of -31 with cc=1
  74 // 8000 0001 cc=1 -> 0000 0007 cc=0
  75         R7 = 1;
  76         CC = R7;
  77         R1 = -31;
  78         R6 = ROT R0 BY R1.L;
  79         DBGA ( R6.L , 0x0007 );
  80         DBGA ( R6.H , 0x0000 );
  81         R7 = CC;
  82         DBGA ( R7.L , 0x0000 );
  83
  84 // rot
  85 //  left by 7
  86 // 8000 0001 cc=1 -> 0000 00e0 cc=0
  87         R7 = 1;
  88         CC = R7;
  89         R1 = 7;
  90         R6 = ROT R0 BY R1.L;
  91         DBGA ( R6.L , 0x00e0 );
  92         DBGA ( R6.H , 0x0000 );
  93         R7 = CC;
  94         DBGA ( R7.L , 0x0000 );
  95
  96 // rot by zero
  97 // 8000 0001 -> 8000 0000
  98         R7 = 1;
  99         CC = R7;
 100         R1 = 0;
 101         R6 = ROT R0 BY R1.L;
 102         DBGA ( R6.L , 0x0001 );
 103         DBGA ( R6.H , 0x8000 );
 104         R7 = CC;
 105         DBGA ( R7.L , 0x0001 );
 106
 107 // rot by 0b1100 0001 is the same as by 1 (mask 6 bits)
 108 // 8000 0001 -> 0000 0002 cc=1
 109         R7 = 0;
 110         CC = R7;
 111         R1 = 0xc1 (X);
 112         R6 = ROT R0 BY R1.L;
 113         DBGA ( R6.L , 0x0002 );
 114         DBGA ( R6.H , 0x0000 );
 115         R7 = CC;
 116         DBGA ( R7.L , 0x0001 );
 117
 118         pass