none/tests/s390x/spechelper-slr.c

   1 #include <stdio.h>
   2
   3 #define branch(mask,_v1,_v2)                           \
   4   ({                                                   \
   5         unsigned char taken;                           \
   6         unsigned int  b1 = _v1;                        \
   7         unsigned int  b2 = _v2;                        \
   8         asm volatile(   "       slr %[b1],%[b2]\n\t"   \
   9                         "       brc " #mask " ,1f\n\t" \
  10                         "       mvi %[taken],0\n\t"    \
  11                         "       j   0f\n\t"            \
  12                         "1:     mvi %[taken],1\n\t"    \
  13                         "0:     bcr 0,0 /* nop */\n\t" \
  14              : [taken] "=Q" (taken), [b1] "+d"(b1)     \
  15              : [b2] "d"(b2)                            \
  16              : "cc");                                  \
  17         taken;                                         \
  18    })
  19
  20 /* cc = (op1 == op2) ? 2
  21                      : (op1 > op2) ? 3 : 1; */
  22
  23 void
  24 slr_equal(void)
  25 {
  26   unsigned int v1, v2;
  27   int wrong, ok;
  28
  29   printf("Test #1  op1 == op2\n");
  30
  31   v1 = v2 = 0xffffffff;
  32   wrong = ok = 0;
  33
  34   if (branch(0,  v1, v2)) ++wrong; else ++ok;
  35   if (branch(1,  v1, v2)) ++wrong; else ++ok;
  36   if (branch(2,  v1, v2)) ++ok; else ++wrong;
  37   if (branch(3,  v1, v2)) ++ok; else ++wrong;
  38   if (branch(4,  v1, v2)) ++wrong; else ++ok;
  39   if (branch(5,  v1, v2)) ++wrong; else ++ok;
  40   if (branch(6,  v1, v2)) ++ok; else ++wrong;
  41   if (branch(7,  v1, v2)) ++ok; else ++wrong;
  42   if (branch(8,  v1, v2)) ++wrong; else ++ok;
  43   if (branch(9,  v1, v2)) ++wrong; else ++ok;
  44   if (branch(10, v1, v2)) ++ok; else ++wrong;
  45   if (branch(11, v1, v2)) ++ok; else ++wrong;
  46   if (branch(12, v1, v2)) ++wrong; else ++ok;
  47   if (branch(13, v1, v2)) ++wrong; else ++ok;
  48   if (branch(14, v1, v2)) ++ok; else ++wrong;
  49   if (branch(15, v1, v2)) ++ok; else ++wrong;
  50
  51   if (wrong != 0 || ok != 16)
  52     printf("FAILED\n");
  53   else
  54     printf("OK\n");
  55 }
  56
  57 void
  58 slr_less(void)
  59 {
  60   unsigned int v1, v2;
  61   int wrong, ok;
  62
  63   printf("Test #2  op1 < op2\n");
  64
  65   v1 = 100;
  66   v2 = 0xffffffff;
  67
  68   wrong = ok = 0;
  69
  70   if (branch(0,  v1, v2)) ++wrong; else ++ok;
  71   if (branch(1,  v1, v2)) ++wrong; else ++ok;
  72   if (branch(2,  v1, v2)) ++wrong; else ++ok;
  73   if (branch(3,  v1, v2)) ++wrong; else ++ok;
  74   if (branch(4,  v1, v2)) ++ok; else ++wrong;
  75   if (branch(5,  v1, v2)) ++ok; else ++wrong;
  76   if (branch(6,  v1, v2)) ++ok; else ++wrong;
  77   if (branch(7,  v1, v2)) ++ok; else ++wrong;
  78   if (branch(8,  v1, v2)) ++wrong; else ++ok;
  79   if (branch(9,  v1, v2)) ++wrong; else ++ok;
  80   if (branch(10, v1, v2)) ++wrong; else ++ok;
  81   if (branch(11, v1, v2)) ++wrong; else ++ok;
  82   if (branch(12, v1, v2)) ++ok; else ++wrong;
  83   if (branch(13, v1, v2)) ++ok; else ++wrong;
  84   if (branch(14, v1, v2)) ++ok; else ++wrong;
  85   if (branch(15, v1, v2)) ++ok; else ++wrong;
  86
  87   if (wrong != 0 /* || ok != 16 */)
  88     printf("FAILED\n");
  89   else
  90     printf("OK\n");
  91 }
  92
  93 void
  94 slr_greater(void)
  95 {
  96   unsigned int v1, v2;
  97   int wrong, ok;
  98
  99   printf("Test #3  op1 > op2\n");
 100
 101   v1 = 0xffffffff;
 102   v2 = 1000;
 103
 104   wrong = ok = 0;
 105
 106   if (branch(0,  v1, v2)) ++wrong; else ++ok;
 107   if (branch(1,  v1, v2)) ++ok; else ++wrong;
 108   if (branch(2,  v1, v2)) ++wrong; else ++ok;
 109   if (branch(3,  v1, v2)) ++ok; else ++wrong;
 110   if (branch(4,  v1, v2)) ++wrong; else ++ok;
 111   if (branch(5,  v1, v2)) ++ok; else ++wrong;
 112   if (branch(6,  v1, v2)) ++wrong; else ++ok;
 113   if (branch(7,  v1, v2)) ++ok; else ++wrong;
 114   if (branch(8,  v1, v2)) ++wrong; else ++ok;
 115   if (branch(9,  v1, v2)) ++ok; else ++wrong;
 116   if (branch(10, v1, v2)) ++wrong; else ++ok;
 117   if (branch(11, v1, v2)) ++ok; else ++wrong;
 118   if (branch(12, v1, v2)) ++wrong; else ++ok;
 119   if (branch(13, v1, v2)) ++ok; else ++wrong;
 120   if (branch(14, v1, v2)) ++wrong; else ++ok;
 121   if (branch(15, v1, v2)) ++ok; else ++wrong;
 122
 123   if (wrong != 0 || ok != 16)
 124     printf("FAILED\n");
 125   else
 126     printf("OK\n");
 127 }
 128
 129 int main()
 130 {
 131   slr_equal();
 132   slr_less();
 133   slr_greater();
 134
 135   return 0;
 136 }