spechelper-slgr.c revision 436e89c602e787e7a27dd6624b09beed41a0da8a 
1#include <stdio.h>
2
3#define branch(mask,_v1,_v2)                           \
4  ({                                                   \
5        unsigned char taken;                           \
6        unsigned long b1 = _v1;                        \
7        unsigned long b2 = _v2;                        \
8        asm volatile("     slgr %[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
21/* cc = (op1 == op2) ? 2
22                     : (op1 > op2) ? 3 : 1; */
23
24
25void
26slgr_equal(void)
27{
28   unsigned long v1, v2;
29   int wrong, ok;
30
31   printf("Test #1  op1 == op2\n");
32
33   v1 = v2 = 42;
34   wrong = ok = 0;
35
36   if (branch(0,  v1, v2)) ++wrong; else ++ok;
37   if (branch(1,  v1, v2)) ++wrong; else ++ok;
38   if (branch(2,  v1, v2)) ++ok; else ++wrong;
39   if (branch(3,  v1, v2)) ++ok; else ++wrong;
40   if (branch(4,  v1, v2)) ++wrong; else ++ok;
41   if (branch(5,  v1, v2)) ++wrong; else ++ok;
42   if (branch(6,  v1, v2)) ++ok; else ++wrong;
43   if (branch(7,  v1, v2)) ++ok; else ++wrong;
44   if (branch(8,  v1, v2)) ++wrong; else ++ok;
45   if (branch(9,  v1, v2)) ++wrong; else ++ok;
46   if (branch(10, v1, v2)) ++ok; else ++wrong;
47   if (branch(11, v1, v2)) ++ok; else ++wrong;
48   if (branch(12, v1, v2)) ++wrong; else ++ok;
49   if (branch(13, v1, v2)) ++wrong; else ++ok;
50   if (branch(14, v1, v2)) ++ok; else ++wrong;
51   if (branch(15, v1, v2)) ++ok; else ++wrong;
52
53   if (wrong != 0 || ok != 16)
54      printf("FAILED\n");
55   else
56      printf("OK\n");
57}
58
59void
60slgr_less(void)
61{
62   unsigned long v1, v2;
63   int wrong, ok;
64
65   printf("Test #2  op1 < op2\n");
66
67   v1 = 100;
68   v2 = 1000;
69
70   wrong = ok = 0;
71
72   if (branch(0,  v1, v2)) ++wrong; else ++ok;
73   if (branch(1,  v1, v2)) ++wrong; else ++ok;
74   if (branch(2,  v1, v2)) ++wrong; else ++ok;
75   if (branch(3,  v1, v2)) ++wrong; else ++ok;
76   if (branch(4,  v1, v2)) ++ok; else ++wrong;
77   if (branch(5,  v1, v2)) ++ok; else ++wrong;
78   if (branch(6,  v1, v2)) ++ok; else ++wrong;
79   if (branch(7,  v1, v2)) ++ok; else ++wrong;
80   if (branch(8,  v1, v2)) ++wrong; else ++ok;
81   if (branch(9,  v1, v2)) ++wrong; else ++ok;
82   if (branch(10, v1, v2)) ++wrong; else ++ok;
83   if (branch(11, v1, v2)) ++wrong; else ++ok;
84   if (branch(12, v1, v2)) ++ok; else ++wrong;
85   if (branch(13, v1, v2)) ++ok; else ++wrong;
86   if (branch(14, v1, v2)) ++ok; else ++wrong;
87   if (branch(15, v1, v2)) ++ok; else ++wrong;
88
89   if (wrong != 0 /* || ok != 16 */)
90      printf("FAILED\n");
91   else
92      printf("OK\n");
93}
94
95void
96slgr_greater(void)
97{
98   unsigned long v1, v2;
99   int wrong, ok;
100
101   printf("Test #3  op1 > op2\n");
102
103   v1 = 10000;
104   v2 = 1000;
105
106   wrong = ok = 0;
107
108   if (branch(0,  v1, v2)) ++wrong; else ++ok;
109   if (branch(1,  v1, v2)) ++ok; else ++wrong;
110   if (branch(2,  v1, v2)) ++wrong; else ++ok;
111   if (branch(3,  v1, v2)) ++ok; else ++wrong;
112   if (branch(4,  v1, v2)) ++wrong; else ++ok;
113   if (branch(5,  v1, v2)) ++ok; else ++wrong;
114   if (branch(6,  v1, v2)) ++wrong; else ++ok;
115   if (branch(7,  v1, v2)) ++ok; else ++wrong;
116   if (branch(8,  v1, v2)) ++wrong; else ++ok;
117   if (branch(9,  v1, v2)) ++ok; else ++wrong;
118   if (branch(10, v1, v2)) ++wrong; else ++ok;
119   if (branch(11, v1, v2)) ++ok; else ++wrong;
120   if (branch(12, v1, v2)) ++wrong; else ++ok;
121   if (branch(13, v1, v2)) ++ok; else ++wrong;
122   if (branch(14, v1, v2)) ++wrong; else ++ok;
123   if (branch(15, v1, v2)) ++ok; else ++wrong;
124
125   if (wrong != 0 || ok != 16)
126      printf("FAILED\n");
127   else
128      printf("OK\n");
129}
130
131int main()
132{
133   slgr_equal();
134   slgr_less();
135   slgr_greater();
136
137   return 0;
138}
139