sim/testsuite/sim/bfin/s30.s

   1 //  Test signbits40
   2 # mach: bfin
   3
   4 .include "testutils.inc"
   5         start
   6
   7
   8 // positive value in accum, smaller than 1.0
   9         A1 = A0 = 0;
  10         R0.L = 0xffff;
  11         R0.H = 0x0000;
  12         A0.w = R0;
  13         R0.L = 0x0000;
  14         A0.x = R0;
  15
  16         R5.L = SIGNBITS A0;
  17         _DBG R5;
  18         A0 = ASHIFT A0 BY R5.L;
  19         _DBG A0;
  20
  21         R4 = A0.w;
  22         R5 = A0.x;
  23         DBGA ( R4.H , 0x7fff ); DBGA ( R4.L , 0x8000 );
  24         DBGA ( R5.H , 0x0000 ); DBGA ( R5.L , 0x0000 );
  25
  26 // neg value in accum, larger than -1.0
  27         A1 = A0 = 0;
  28         R0.L = 0x0000;
  29         R0.H = 0xffff;
  30         A0.w = R0;
  31         R0.L = 0x00ff;
  32         A0.x = R0;
  33
  34         R5.L = SIGNBITS A0;
  35         _DBG R5;
  36         A0 = ASHIFT A0 BY R5.L;
  37         _DBG A0;
  38
  39         R4 = A0.w;
  40         R5 = A0.x;
  41         DBGA ( R4.H , 0x8000 ); DBGA ( R4.L , 0x0000 );
  42         DBGA ( R5.H , 0xffff ); DBGA ( R5.L , 0xffff );
  43
  44 // positive value in accum, larger than 1.0
  45         A1 = A0 = 0;
  46         R0.L = 0xffff;
  47         R0.H = 0xffff;
  48         A0.w = R0;
  49         R0.L = 0x000f;
  50         A0.x = R0;
  51
  52         R5.L = SIGNBITS A0;
  53         _DBG R5;
  54         A0 = ASHIFT A0 BY R5.L;
  55         _DBG A0;
  56
  57         R4 = A0.w;
  58         R5 = A0.x;
  59         DBGA ( R4.H , 0x7fff ); DBGA ( R4.L , 0xffff );
  60         DBGA ( R5.H , 0x0000 ); DBGA ( R5.L , 0x0000 );
  61
  62 // negative value in accum, smaller than -1.0
  63         A1 = A0 = 0;
  64         R0.L = 0x0000;
  65         R0.H = 0x0000;
  66         A0.w = R0;
  67         R0.L = 0x0080;
  68         A0.x = R0;
  69
  70         R5.L = SIGNBITS A0;
  71         _DBG R5;
  72         A0 = ASHIFT A0 BY R5.L;
  73         _DBG A0;
  74
  75         R4 = A0.w;
  76         R5 = A0.x;
  77         DBGA ( R4.H , 0x8000 ); DBGA ( R4.L , 0x0000 );
  78         DBGA ( R5.H , 0xffff ); DBGA ( R5.L , 0xffff );
  79
  80 // no normalization
  81         A1 = A0 = 0;
  82         R0.L = 0xfffa;
  83         R0.H = 0x7fff;
  84         A0.w = R0;
  85         R0.L = 0x0000;
  86         A0.x = R0;
  87
  88         R5.L = SIGNBITS A0;
  89         _DBG R5;
  90         A0 = ASHIFT A0 BY R5.L;
  91         _DBG A0;
  92
  93         R4 = A0.w;
  94         R5 = A0.x;
  95         DBGA ( R4.H , 0x7fff ); DBGA ( R4.L , 0xfffa );
  96         DBGA ( R5.H , 0x0000 ); DBGA ( R5.L , 0x0000 );
  97
  98 // no normalization (-1.0)
  99         A1 = A0 = 0;
 100         R0.L = 0x0000;
 101         R0.H = 0x8000;
 102         A0.w = R0;
 103         R0.L = 0x00ff;
 104         A0.x = R0;
 105
 106         R5.L = SIGNBITS A0;
 107         _DBG R5;
 108         A0 = ASHIFT A0 BY R5.L;
 109         _DBG A0;
 110
 111         R4 = A0.w;
 112         R5 = A0.x;
 113         DBGA ( R4.H , 0x8000 ); DBGA ( R4.L , 0x0000 );
 114         DBGA ( R5.H , 0xffff ); DBGA ( R5.L , 0xffff );
 115
 116 // norm by 1
 117         A1 = A0 = 0;
 118         R0.L = 0x0000;
 119         R0.H = 0x8000;
 120         A0.w = R0;
 121         R0.L = 0x0000;
 122         A0.x = R0;
 123
 124         R5.L = SIGNBITS A0;
 125         _DBG R5;
 126         A0 = ASHIFT A0 BY R5.L;
 127         _DBG A0;
 128
 129         R4 = A0.w;
 130         R5 = A0.x;
 131         DBGA ( R4.H , 0x4000 ); DBGA ( R4.L , 0x0000 );
 132         DBGA ( R5.H , 0x0000 ); DBGA ( R5.L , 0x0000 );
 133
 134 // norm by 1
 135         A1 = A0 = 0;
 136         R0.L = 0x0000;
 137         R0.H = 0x0000;
 138         A0.w = R0;
 139         R0.L = 0x00ff;
 140         A0.x = R0;
 141
 142         R5.L = SIGNBITS A0;
 143         _DBG R5;
 144         A0 = ASHIFT A0 BY R5.L;
 145         _DBG A0;
 146
 147         R4 = A0.w;
 148         R5 = A0.x;
 149         DBGA ( R4.H , 0x8000 ); DBGA ( R4.L , 0x0000 );
 150         DBGA ( R5.H , 0xffff ); DBGA ( R5.L , 0xffff );
 151
 152         pass