1 /* $OpenBSD: divremtest.c,v 1.2 2001/01/29 02:05:39 niklas Exp $ */
2 /* $NetBSD: divremtest.c,v 1.1 1995/04/24 05:53:35 cgd Exp $ */
3
4 /*
5 * Copyright (c) 1995 Christopher G. Demetriou
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Christopher G. Demetriou
19 * for the NetBSD Project.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <stdio.h>
36 #include <unistd.h>
37 #include <signal.h>
38
39 void testfile();
40 void usage();
41
42 int generate;
43
44 int
main(argc,argv)45 main(argc, argv)
46 int argc;
47 char **argv;
48 {
49 int c;
50
51 signal(SIGFPE, SIG_IGN);
52
53 while ((c = getopt(argc, argv, "g")) != -1)
54 switch (c) {
55 case 'g':
56 generate = 1;
57 break;
58
59 default:
60 usage();
61 break;
62 }
63
64 argc -= optind;
65 argv += optind;
66
67 if (argc == 0)
68 testfile();
69 else
70 for (; argc != 0; argc--, argv++) {
71 if (freopen(argv[0], "r", stdin) == NULL) {
72 fprintf(stderr,
73 "divremtest: couldn't open %s\n",
74 argv[0]);
75 exit(1);
76 }
77
78 testfile();
79 }
80
81 exit(0);
82 }
83
84 void
testfile()85 testfile()
86 {
87 union operand {
88 unsigned long input;
89 int op_int;
90 unsigned int op_u_int;
91 long op_long;
92 unsigned long op_u_long;
93 } op1, op2, divres, modres, divwant, modwant;
94 char opspec[6];
95 int encoded, i;
96
97 while (scanf("%6c %lx %lx %lx %lx\n", opspec, &op1.input,
98 &op2.input, &divwant.input, &modwant.input) != EOF) {
99
100 encoded = 0;
101
102 for (i = 0; i < 6; i += 2) {
103 int posval;
104
105 switch (opspec[i]) {
106 case '.':
107 posval = 0;
108 break;
109 case '-':
110 posval = 1;
111 break;
112 default:
113 fprintf(stderr,
114 "unknown signedness spec %c\n",
115 opspec[i]);
116 exit(1);
117 }
118 encoded |= posval << ((5 - i) * 4);
119 }
120
121 for (i = 1; i < 6; i += 2) {
122 int posval;
123
124 switch (opspec[i]) {
125 case 'i':
126 posval = 0;
127 break;
128 case 'l':
129 posval = 1;
130 break;
131 default:
132 fprintf(stderr, "unknown length spec %c\n",
133 opspec[i]);
134 exit(1);
135 }
136 encoded |= posval << ((5 - i) * 4);
137 }
138
139 /* KILL ME!!! */
140 switch (encoded) {
141
142 #define TRY_IT(a, b, c) \
143 divres.a = op1.b / op2.c; \
144 modres.a = op1.b % op2.c; \
145 if (generate) { \
146 printf("%6s 0x%016lx 0x%016lx 0x%016lx 0x%016lx\n", \
147 opspec, op1.input, op2.input, \
148 divres.a, modres.a); \
149 } else { \
150 if ((divres.a != divwant.a) || \
151 (modres.a != modwant.a)) { \
152 fprintf(stderr, "%6s 0x%016lx 0x%016lx\n", \
153 opspec, op1.input, op2.input); \
154 fprintf(stderr, "FAILED:\n"); \
155 fprintf(stderr, \
156 "div:\twanted 0x%16lx, got 0x%16lx\n", \
157 divwant.a, divres.a); \
158 fprintf(stderr, \
159 "mod:\twanted 0x%16lx, got 0x%16lx\n", \
160 modwant.a, modres.a); \
161 \
162 exit(1); \
163 } \
164 }
165
166 #include "cases.c"
167
168 #undef TRY_IT
169
170 default:
171 fprintf(stderr,
172 "INTERNAL ERROR: unknown encoding %x\n", encoded);
173 exit(1);
174 }
175 }
176 }
177
178 void
usage()179 usage()
180 {
181
182 fprintf(stderr, "usage: divremtest [-v] [testfile ...]\n");
183 exit(1);
184 }
185