| 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 | |
| 35 | #if !defined(__GNUC__) || (!defined(__i386__) && !defined(__amd64__)) |
| 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 | { |
| 47 | |
| 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'); |
| 88 | printf("stepping = %d\n", stepping); |
| 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 -------------------------------------------------*/ |