tmll.c revision 436e89c602e787e7a27dd6624b09beed41a0da8a 
1#include <stdio.h>
2
3#define get_cc() \
4({ \
5   char __cc; \
6   /* don't use IPM to better test spechelpers */ \
7   asm volatile( "brc 8,1f\n\t" \
8                 "brc 4,2f\n\t" \
9                 "brc 2,3f\n\t" \
10                 "brc 1,4f\n\t" \
11                 "mvi %0,4\n\t" \
12                 "j   0f\n\t" \
13                 "1:  mvi %0,0\n\t" \
14                 "j   0f\n\t" \
15                 "2:  mvi %0,1\n\t" \
16                 "j   0f\n\t" \
17                 "3:  mvi %0,2\n\t" \
18                 "j   0f\n\t" \
19                 "4:  mvi %0,3\n\t" \
20                 "j   0f\n\t" \
21                 "0:  /* nop */ brc 0,0\n\t" \
22                 : "=m" (__cc) : : "memory"); \
23	__cc; \
24})
25
26void check_cc(int value, int cc)
27{
28   if (cc != value) {
29      printf("wrong cc: ");
30      if (value == 0) printf("expected 0  ");
31      if (value == 1) printf("expected 1  ");
32      if (value == 2) printf("expected 2  ");
33      if (value == 3) printf("expected 3  ");
34      if (cc == 0) printf("got 0");
35      if (cc == 1) printf("got 1");
36      if (cc == 2) printf("got 2");
37      if (cc == 3) printf("got 3");
38   } else {
39      printf("OK");
40   }
41   printf("\n");
42}
43
44void tmll(void)
45{
46   unsigned long v;
47
48   /* test #1: value is zero, all bits selected */
49   v = 0;
50   asm volatile( "tmll   %[v],0xFFFF\n\t" : : [v] "d"(v) : "cc");
51   check_cc(0, get_cc());
52
53   /* test #2: value is all-ones, mask is zero */
54   v = 0xFFFF;
55   asm volatile( "tmll   %[v],0\n\t" : : [v] "d"(v) : "cc");
56   check_cc(0, get_cc());
57
58   /* test #3: selected bits are 0 */
59   v = 0x0F;
60   asm volatile( "tmll   %[v],0xf0\n\t" : : [v] "d"(v) : "cc");
61   check_cc(0, get_cc());
62
63   /* test #4: selected bits are all 1 */
64   v = 0xF0;
65   asm volatile( "tmll   %[v],0x70\n\t" : : [v] "d"(v) : "cc");
66   check_cc(3, get_cc());
67
68   /* test #5: selected bits are mixed, leftmost bit is 0 */
69   v = 0x0F;
70   asm volatile( "tmll   %[v],0x81\n\t" : : [v] "d"(v) : "cc");
71   check_cc(1, get_cc());
72
73   /* test #6: selected bits are mixed, leftmost bit is 1 */
74   v = 0xF0;
75   asm volatile( "tmll   %[v],0x81\n\t" : : [v] "d"(v) : "cc");
76   check_cc(2, get_cc());
77}
78
79int main(void)
80{
81  tmll();
82
83  return 0;
84}
85