sim/testsuite/bfin/dsp_a7.s

   1 /*  ALU test program.
   2  *  Test instructions
   3  *  r7 = +/- (r0,r1);
   4  *  r7 = -/+ (r0,r1);
   5  *  r7 = -/- (r0,r1);
   6  */
   7
   8 # mach: bfin
   9
  10 .include "testutils.inc"
  11         start
  12
  13 // test subtraction
  14         R0.L = 0x000f;
  15         R0.H = 0x0010;
  16         R1.L = 0x000f;
  17         R1.H = 0x0010;
  18         R7 = 0;
  19         ASTAT = R7;
  20         R7 = R0 +|- R1;
  21         DBGA ( R7.L , 0x0000 );
  22         DBGA ( R7.H , 0x0020 );
  23         CC = AZ;        R7 = CC; DBGA ( R7.L , 0x1 );
  24         CC = AN;        R7 = CC; DBGA ( R7.L , 0x0 );
  25         CC =  V;        R7 = CC; DBGA ( R7.L , 0x0 );
  26         CC = AC0;       R7 = CC; DBGA ( R7.L , 0x1 );
  27
  28 // test overflow negative on subtraction
  29         R0.L = 0x8000;
  30         R0.H = 0x0010;
  31         R1.L = 0x0001;
  32         R1.H = 0x0010;
  33         R7 = 0;
  34         ASTAT = R7;
  35         R7 = R0 +|- R1;
  36         DBGA ( R7.L , 0x7fff );
  37         DBGA ( R7.H , 0x0020 );
  38         CC = AZ;        R7 = CC; DBGA ( R7.L , 0x0 );
  39         CC = AN;        R7 = CC; DBGA ( R7.L , 0x0 );
  40         CC =  V;        R7 = CC; DBGA ( R7.L , 0x1 );
  41         CC = AC0;       R7 = CC; DBGA ( R7.L , 0x1 );
  42
  43 // test saturate negative on subtraction +/-
  44         R0.L = 0x8000;
  45         R0.H = 0x0010;
  46         R1.L = 0x0001;
  47         R1.H = 0x0010;
  48         R7 = 0;
  49         ASTAT = R7;
  50         R7 = R0 +|- R1 (S);
  51         DBGA ( R7.L , 0x8000 );
  52         DBGA ( R7.H , 0x0020 );
  53         CC = AZ;        R7 = CC; DBGA ( R7.L , 0x0 );
  54         CC = AN;        R7 = CC; DBGA ( R7.L , 0x1 );
  55         CC =  V;        R7 = CC; DBGA ( R7.L , 0x1 );
  56         CC = AC0;       R7 = CC; DBGA ( R7.L , 0x1 );
  57
  58 // test saturate negative on subtraction -/+
  59         R0.L = 0x8000;
  60         R0.H = 0x8000;
  61         R1.L = 0x0001;
  62         R1.H = 0x0001;
  63         R7 = 0;
  64         ASTAT = R7;
  65         R7 = R0 -|+ R1 (S);
  66         DBGA ( R7.L , 0x8001 );
  67         DBGA ( R7.H , 0x8000 );
  68         CC = AZ;        R5 = CC; DBGA ( R5.L , 0x0 );
  69         CC = AN;        R5 = CC; DBGA ( R5.L , 0x1 );
  70         CC =  V;        R5 = CC; DBGA ( R5.L , 0x1 );
  71         CC = AC0;       R5 = CC; DBGA ( R5.L , 0x0 );
  72
  73 // test saturate negative on subtraction -/-
  74         R0.L = 0x8000;
  75         R0.H = 0x8000;
  76         R1.L = 0x0001;
  77         R1.H = 0x0001;
  78         R7 = 0;
  79         ASTAT = R7;
  80         R7 = R0 -|- R1 (S);
  81         DBGA ( R7.L , 0x8000 );
  82         DBGA ( R7.H , 0x8000 );
  83         CC = AZ;        R7 = CC; DBGA ( R7.L , 0x0 );
  84         CC = AN;        R7 = CC; DBGA ( R7.L , 0x1 );
  85         CC =  V;        R7 = CC; DBGA ( R7.L , 0x1 );
  86         CC = AC0;       R7 = CC; DBGA ( R7.L , 0x1 );
  87
  88 // test saturate positive on subtraction -/+
  89         R0.L = 0x7fff;
  90         R0.H = 0x7fff;
  91         R1.L = 0xffff;
  92         R1.H = 0xffff;
  93         R7 = 0;
  94         ASTAT = R7;
  95         R7 = R0 -|+ R1 (S);
  96         DBGA ( R7.L , 0x7ffe );
  97         DBGA ( R7.H , 0x7fff );
  98         CC = AZ;        R7 = CC; DBGA ( R7.L , 0x0 );
  99         CC = AN;        R7 = CC; DBGA ( R7.L , 0x0 );
 100         CC =  V;        R7 = CC; DBGA ( R7.L , 0x1 );
 101         CC = AC0;       R7 = CC; DBGA ( R7.L , 0x1 );
 102
 103         pass