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1 | /* -*-c-*- |
2 | * | |
3 | * Determine x86 CPU model number | |
4 | * | |
5 | * (c) 2009 Mark Wooding | |
6 | */ | |
7 | ||
8 | /*----- Licensing notice --------------------------------------------------* | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software Foundation, | |
22 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | */ | |
24 | ||
25 | /*----- Header files ------------------------------------------------------*/ | |
26 | ||
27 | #include <errno.h> | |
28 | #include <stdio.h> | |
29 | #include <stdlib.h> | |
30 | ||
31 | #include <mLib/mdwopt.h> | |
32 | #include <mLib/quis.h> | |
33 | #include <mLib/report.h> | |
34 | ||
8fc36470 | 35 | #if !defined(__GNUC__) || (!defined(__i386__) && !defined(__amd64__)) |
92f7c002 MW |
36 | # error "This isn't going to work." |
37 | #endif | |
38 | ||
39 | /*----- Data structures ---------------------------------------------------*/ | |
40 | ||
41 | struct cpuid { unsigned eax, ebx, ecx, edx; }; | |
42 | ||
43 | /*----- Main code ---------------------------------------------------------*/ | |
44 | ||
45 | static inline void cpuid(unsigned leaf, struct cpuid *c) | |
46 | { | |
8fc36470 | 47 | |
92f7c002 MW |
48 | __asm__ ("cpuid" |
49 | : "=a" (c->eax), | |
50 | "=b" (c->ebx), | |
51 | "=c" (c->ecx), | |
52 | "=d" (c->edx) | |
53 | : "a" (leaf)); | |
54 | } | |
55 | ||
56 | #define f_verbose 1u | |
57 | #define f_bogus 2u | |
58 | ||
59 | static void identify(unsigned f) | |
60 | { | |
61 | struct cpuid c; | |
62 | unsigned stepping, model, family, type, extmodel, extfamily; | |
63 | unsigned dispfamily, dispmodel; | |
64 | ||
65 | cpuid(1, &c); | |
66 | stepping = (c.eax >> 0) & 0x0f; | |
67 | model = (c.eax >> 4) & 0x0f; | |
68 | family = (c.eax >> 8) & 0x0f; | |
69 | type = (c.eax >> 12) & 0x03; | |
70 | extmodel = (c.eax >> 16) & 0x0f; | |
71 | extfamily = (c.eax >> 20) & 0xff; | |
72 | ||
73 | dispfamily = family + (family == 0x0f ? extfamily : 0); | |
74 | dispmodel = model | (family == 0x06 || family == 0x0f ? extmodel << 4 : 0); | |
75 | ||
76 | if (!(f & f_verbose)) | |
77 | printf("%02X_%02XH\n", dispfamily, dispmodel); | |
78 | else { | |
79 | printf("type = %d\n", type); | |
80 | printf("family = %d", dispfamily); | |
81 | if (family == 0x0f) | |
82 | printf(" (base = %d, extended = %d)", family, extfamily); | |
83 | putchar('\n'); | |
84 | printf("model = %d", dispmodel); | |
85 | if (family == 0x06 || family == 0x0f) | |
86 | printf(" (base = %d, extended = %d)", model, extmodel); | |
87 | putchar('\n'); | |
e72ffec7 | 88 | printf("stepping = %d\n", stepping); |
92f7c002 MW |
89 | } |
90 | } | |
91 | ||
92 | static void dump(unsigned leaf) | |
93 | { | |
94 | unsigned max; | |
95 | struct cpuid c; | |
96 | ||
97 | cpuid(leaf, &c); | |
98 | max = c.eax; | |
99 | for (;;) { | |
100 | printf("%08x: %08x %08x %08x %08x\n", leaf, c.eax, c.ebx, c.ecx, c.edx); | |
101 | leaf++; | |
102 | if (leaf > max) | |
103 | break; | |
104 | cpuid(leaf, &c); | |
105 | } | |
106 | } | |
107 | ||
108 | static void usage(FILE *fp) | |
109 | { pquis(fp, "Usage: $ [-v] [-i | -d | [-s] LEAF | -x LEAF]\n"); } | |
110 | ||
111 | static void version(void) | |
112 | { pquis(stdout, "$, version " VERSION ); } | |
113 | ||
114 | static void help(void) | |
115 | { | |
116 | version(); putchar('\n'); usage(stdout); | |
117 | pquis(stdout, "\n\ | |
118 | Shows information about the host's processor. You may find cpuid(1) more\n\ | |
119 | enlightening.\n\ | |
120 | \n\ | |
121 | Options:\n\ | |
122 | \n\ | |
123 | -h, --help This useless help text.\n\ | |
124 | -V, --version Program's version number.\n\ | |
125 | -u, --usage Short usage summary.\n\ | |
126 | \n\ | |
127 | -v, --verbose Show more detailed information.\n\ | |
128 | \n\ | |
129 | -i, --identify Show CPU display-model designation. [default]\n\ | |
130 | -s, --show=LEAF Show named leaf of CPUID data.\n\ | |
131 | -x, --extended=LEAF Show named extended leaf of CPUID data.\n\ | |
132 | -d, --dump Dump all CPUID information.\n"); | |
133 | } | |
134 | ||
135 | int main(int argc, char *argv[]) | |
136 | { | |
137 | int i; | |
138 | struct cpuid c; | |
139 | unsigned f = 0; | |
140 | unsigned mode = 0; | |
141 | const char *leafstr = 0; | |
142 | unsigned long leaf = -1; | |
143 | char *q; | |
144 | ||
145 | enum { | |
146 | m_default, | |
147 | m_identify, | |
148 | m_dump, | |
149 | m_show, | |
150 | m_ext | |
151 | }; | |
152 | ||
153 | ego(argv[0]); | |
154 | ||
155 | for (;;) { | |
156 | static const struct option opts[] = { | |
157 | { "help", 0, 0, 'h' }, | |
158 | { "version", 0, 0, 'V' }, | |
159 | { "usage", 0, 0, 'u' }, | |
160 | { "verbose", 0, 0, 'v' }, | |
161 | { "identify", 0, 0, 'i' }, | |
162 | { "dump", 0, 0, 'd' }, | |
163 | { "show", OPTF_ARGREQ, 0, 's' }, | |
164 | { "extended", OPTF_ARGREQ, 0, 'x' }, | |
165 | { 0, 0, 0, 0 } | |
166 | }; | |
167 | ||
168 | if ((i = mdwopt(argc, argv, "hVu" "v" "ids:x:", opts, 0, 0, 0)) < 0) | |
169 | break; | |
170 | switch (i) { | |
171 | case 'h': | |
172 | help(); | |
173 | exit(0); | |
174 | case 'V': | |
175 | version(); | |
176 | exit(0); | |
177 | case 'u': | |
178 | usage(stdout); | |
179 | exit(0); | |
180 | case 'v': | |
181 | f |= f_verbose; | |
182 | break; | |
183 | case 'i': | |
184 | if (mode) f |= f_bogus; | |
185 | mode = m_identify; | |
186 | break; | |
187 | case 'd': | |
188 | if (mode) f |= f_bogus; | |
189 | mode = m_dump; | |
190 | break; | |
191 | case 's': | |
192 | if (mode) f |= f_bogus; | |
193 | mode = m_show; | |
194 | leafstr = optarg; | |
195 | break; | |
196 | case 'x': | |
197 | if (mode) f |= f_bogus; | |
198 | mode = m_ext; | |
199 | leafstr = optarg; | |
200 | break; | |
201 | default: | |
202 | f |= f_bogus; | |
203 | break; | |
204 | } | |
205 | } | |
206 | ||
207 | argv += optind; argc -= optind; | |
208 | if ((f & f_bogus) || argc > 1 || (mode && argc)) { | |
209 | usage(stderr); | |
210 | exit(EXIT_FAILURE); | |
211 | } | |
212 | ||
213 | if (!mode && argc) { | |
214 | leafstr = argv[0]; | |
215 | mode = m_show; | |
216 | } | |
217 | if (leafstr) { | |
218 | errno = 0; | |
219 | leaf = strtoul(leafstr, &q, 0); | |
220 | if (q == leafstr || *q || errno || leaf > 0xffffffff) | |
221 | die(EXIT_FAILURE, "bad leaf value: %s", leafstr); | |
222 | } | |
223 | ||
224 | switch (mode) { | |
225 | case m_default: | |
226 | case m_identify: | |
227 | identify(f); | |
228 | break; | |
229 | case m_ext: | |
230 | leaf ^= 0x80000000; | |
231 | /* fall through */ | |
232 | case m_show: | |
233 | cpuid(leaf, &c); | |
234 | if (!(f & f_verbose)) | |
235 | printf("%08x %08x %08x %08x\n", c.eax, c.ebx, c.ecx, c.edx); | |
236 | else { | |
237 | printf("EAX = %08x\n", c.eax); | |
238 | printf("EBX = %08x\n", c.ebx); | |
239 | printf("ECX = %08x\n", c.ecx); | |
240 | printf("EDX = %08x\n", c.edx); | |
241 | } | |
242 | break; | |
243 | case m_dump: | |
244 | dump(0); | |
245 | dump(0x80000000); | |
246 | break; | |
247 | default: | |
248 | abort(); | |
249 | } | |
250 | ||
251 | return (0); | |
252 | } | |
253 | ||
254 | /*----- That's all, folks -------------------------------------------------*/ |