1 #include <stdio.h>
2 #include <stdint.h>
3 #include "opcodes.h"
4
5 #define BRASLCLOBBER "0","1","2","3","4","5","14", \
6 "f0","f1","f2","f3","f4","f5","f6","f7"
7
if_eq(void)8 void if_eq(void) { printf("equal\n"); }
if_ne(void)9 void if_ne(void) { printf("not equal\n"); }
if_gt(void)10 void if_gt(void) { printf("greater than\n"); }
if_le(void)11 void if_le(void) { printf("less or equal\n"); }
if_lt(void)12 void if_lt(void) { printf("less than\n"); }
if_ge(void)13 void if_ge(void) { printf("greater or equal\n"); }
if_taken(void)14 void if_taken(void) { printf("taken\n"); }
if_not_taken(void)15 void if_not_taken(void) { printf("not taken\n"); }
16
17 #undef LT
18 #define NEVER 0
19 #define GT 2
20 #define LT 4
21 #define NE 6
22 #define EQ 8
23 #define LE C
24 #define GE A
25 #define ALWAYS E
26
27
compare_never(int32_t value1,int32_t value2)28 void compare_never(int32_t value1, int32_t value2)
29 {
30 register int32_t val1 asm("r7") = value1;
31 register int32_t val2 asm("r8") = value2;
32
33 asm volatile(
34 "aghi 15,-160\n\t"
35 CRJ(7,8,8,NEVER) "\n\t"
36 "brasl 14,if_not_taken\n\t"
37 "j 0f\n\t"
38 "brasl 14,if_taken\n\t"
39 "0: aghi 15,160\n\t"
40 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
41 return;
42 }
43
compare_always(int32_t value1,int32_t value2)44 void compare_always(int32_t value1, int32_t value2)
45 {
46 register int32_t val1 asm("r7") = value1;
47 register int32_t val2 asm("r8") = value2;
48
49 asm volatile(
50 "aghi 15,-160\n\t"
51 CRJ(7,8,8,ALWAYS) "\n\t"
52 "brasl 14,if_not_taken\n\t"
53 "j 0f\n\t"
54 "brasl 14,if_taken\n\t"
55 "0: aghi 15,160\n\t"
56 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
57 return;
58 }
59
compare_le(int32_t value1,int32_t value2)60 void compare_le(int32_t value1, int32_t value2)
61 {
62 register int32_t val1 asm("r7") = value1;
63 register int32_t val2 asm("r8") = value2;
64
65 asm volatile(
66 "aghi 15,-160\n\t"
67 CRJ(7,8,8,LE) "\n\t"
68 "brasl 14,if_gt\n\t"
69 "j 0f\n\t"
70 "brasl 14,if_le\n\t"
71 "0: aghi 15,160\n\t"
72 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
73 return;
74 }
75
compare_ge(int32_t value1,int32_t value2)76 void compare_ge(int32_t value1, int32_t value2)
77 {
78 register int32_t val1 asm("r7") = value1;
79 register int32_t val2 asm("r8") = value2;
80
81 asm volatile(
82 "aghi 15,-160\n\t"
83 CRJ(7,8,8,GE) "\n\t"
84 "brasl 14,if_lt\n\t"
85 "j 0f\n\t"
86 "brasl 14,if_ge\n\t"
87 "0: aghi 15,160\n\t"
88 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
89 return;
90 }
91
compare_gt(int32_t value1,int32_t value2)92 void compare_gt(int32_t value1, int32_t value2)
93 {
94 register int32_t val1 asm("r7") = value1;
95 register int32_t val2 asm("r8") = value2;
96
97 asm volatile(
98 "aghi 15,-160\n\t"
99 CRJ(7,8,8,GT) "\n\t"
100 "brasl 14,if_le\n\t"
101 "j 0f\n\t"
102 "brasl 14,if_gt\n\t"
103 "0: aghi 15,160\n\t"
104 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
105 return;
106 }
107
compare_lt(int32_t value1,int32_t value2)108 void compare_lt(int32_t value1, int32_t value2)
109 {
110 register int32_t val1 asm("r7") = value1;
111 register int32_t val2 asm("r8") = value2;
112
113 asm volatile(
114 "aghi 15,-160\n\t"
115 CRJ(7,8,8,LT) "\n\t"
116 "brasl 14,if_ge\n\t"
117 "j 0f\n\t"
118 "brasl 14,if_lt\n\t"
119 "0: aghi 15,160\n\t"
120 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
121 return;
122 }
123
compare_eq(int32_t value1,int32_t value2)124 void compare_eq(int32_t value1, int32_t value2)
125 {
126 register int32_t val1 asm("r7") = value1;
127 register int32_t val2 asm("r8") = value2;
128
129 asm volatile(
130 "aghi 15,-160\n\t"
131 CRJ(7,8,8,EQ) "\n\t"
132 "brasl 14,if_ne\n\t"
133 "j 0f\n\t"
134 "brasl 14,if_eq\n\t"
135 "0: aghi 15,160\n\t"
136 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
137 return;
138 }
139
compare_ne(int32_t value1,int32_t value2)140 void compare_ne(int32_t value1, int32_t value2)
141 {
142 register int32_t val1 asm("r7") = value1;
143 register int32_t val2 asm("r8") = value2;
144
145 asm volatile(
146 "aghi 15,-160\n\t"
147 CRJ(7,8,8,NE) "\n\t"
148 "brasl 14,if_eq\n\t"
149 "j 0f\n\t"
150 "brasl 14,if_ne\n\t"
151 "0: aghi 15,160\n\t"
152 : : "d"(val1), "d"(val2) : "15", BRASLCLOBBER);
153 return;
154 }
155
main()156 int main()
157 {
158 compare_eq(-12, 42);
159 compare_eq(42, 42);
160 compare_eq(100, 42);
161
162 compare_ne(-12, 42);
163 compare_ne(42, 42);
164 compare_ne(100, 42);
165
166 compare_gt(-12, 42);
167 compare_gt(42, 42);
168 compare_gt(100, 42);
169
170 compare_lt(-12, 42);
171 compare_lt(42, 42);
172 compare_lt(100, 42);
173
174 compare_le(-12, 42);
175 compare_le(42, 42);
176 compare_le(100, 42);
177
178 compare_ge(-12, 42);
179 compare_ge(42, 42);
180 compare_ge(100, 42);
181
182 compare_never(-12, 42);
183 compare_never(42, 42);
184 compare_never(100, 42);
185
186 compare_always(-12, 42);
187 compare_always(42, 42);
188 compare_always(100, 42);
189
190 return 0;
191 }
192