sim/testsuite/bfin/m11.s

   1 //  Test extraction from accumulators:
   2 //  SCALE in SIGNED FRACTIONAL mode
   3 # mach: bfin
   4
   5 .include "testutils.inc"
   6         start
   7
   8
   9 // load r0=0x3fff0000
  10 // load r1=0x0fffc000
  11 // load r2=0x7ff00000
  12 // load r3=0x80100000
  13 // load r4=0x000000ff
  14         loadsym P0, data0;
  15         R0 = [ P0 ++ ];
  16         R1 = [ P0 ++ ];
  17         R2 = [ P0 ++ ];
  18         R3 = [ P0 ++ ];
  19         R4 = [ P0 ++ ];
  20
  21 // SCALE
  22 //  0x003fff0000 -> SCALE 0x7ffe
  23         A1 = A0 = 0;
  24         A1.w = R0;
  25         A0.w = R0;
  26         R5.H = A1, R5.L = A0 (S2RND);
  27         DBGA ( R5.L , 0x7ffe );
  28         DBGA ( R5.H , 0x7ffe );
  29
  30 // SCALE
  31 //  0x000fffc000 -> SCALE 0x2000
  32         A1 = A0 = 0;
  33         A1.w = R1;
  34         A0.w = R1;
  35         R5.H = A1, R5.L = A0 (S2RND);
  36         DBGA ( R5.L , 0x2000 );
  37         DBGA ( R5.H , 0x2000 );
  38
  39 // SCALE
  40 //  0x007ff00000 -> SCALE 0x7fff
  41         A1 = A0 = 0;
  42         A1.w = R2;
  43         A0.w = R2;
  44         R5.H = A1, R5.L = A0 (S2RND);
  45         DBGA ( R5.L , 0x7fff );
  46         DBGA ( R5.H , 0x7fff );
  47
  48 // SCALE
  49 //  0xff80100000 -> SCALE 0x8000
  50         A1 = A0 = 0;
  51         A1.w = R3;
  52         A0.w = R3;
  53         A1.x = R4.L;
  54         A0.x = R4.L;
  55         R5.H = A1, R5.L = A0 (S2RND);
  56         DBGA ( R5.L , 0x8000 );
  57         DBGA ( R5.H , 0x8000 );
  58
  59         pass
  60
  61         .data;
  62 data0:
  63         .dw 0x0000
  64         .dw 0x3fff
  65         .dw 0xc000
  66         .dw 0x0fff
  67         .dw 0x0000
  68         .dw 0x7ff0
  69         .dw 0x0000
  70         .dw 0x8010
  71         .dw 0x00ff
  72         .dw 0x0000