vo_corevideo.m: remote useless parentheses and casts
[mplayer/glamo.git] / cpuinfo.c
blob5a39ddb8696c3dc5c95568c4ad5d302b1178620d
1 /*
2 * small utility to extract CPU information
3 * Used by configure to set CPU optimization levels on some operating
4 * systems where /proc/cpuinfo is non-existent or unreliable.
6 * This file is part of MPlayer.
8 * MPlayer is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * MPlayer is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include <stdio.h>
24 #include <sys/time.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <unistd.h>
29 #ifdef __MINGW32__
30 #define MISSING_USLEEP
31 #include <windows.h>
32 #define sleep(t) Sleep(1000*t);
33 #endif
35 #ifdef __BEOS__
36 #define usleep(t) snooze(t)
37 #endif
39 #ifdef M_UNIX
40 typedef long long int64_t;
41 #define MISSING_USLEEP
42 #else
43 #include <inttypes.h>
44 #endif
46 #define CPUID_FEATURE_DEF(bit, desc, description) \
47 { bit, desc }
49 typedef struct cpuid_regs {
50 unsigned int eax;
51 unsigned int ebx;
52 unsigned int ecx;
53 unsigned int edx;
54 } cpuid_regs_t;
56 static cpuid_regs_t
57 cpuid(int func) {
58 cpuid_regs_t regs;
59 #define CPUID ".byte 0x0f, 0xa2; "
60 #ifdef __x86_64__
61 __asm__("mov %%rbx, %%rsi\n\t"
62 #else
63 __asm__("mov %%ebx, %%esi\n\t"
64 #endif
65 CPUID"\n\t"
66 #ifdef __x86_64__
67 "xchg %%rsi, %%rbx\n\t"
68 #else
69 "xchg %%esi, %%ebx\n\t"
70 #endif
71 : "=a" (regs.eax), "=S" (regs.ebx), "=c" (regs.ecx), "=d" (regs.edx)
72 : "0" (func));
73 return regs;
77 static int64_t
78 rdtsc(void)
80 uint32_t hi, lo;
81 #define RDTSC ".byte 0x0f, 0x31; "
82 __asm__ volatile (RDTSC : "=a"(lo), "=d"(hi) : );
83 return (uint64_t) hi << 32 | lo;
86 static const char*
87 brandname(int i)
89 static const char* brandmap[] = {
90 NULL,
91 "Intel(R) Celeron(R) processor",
92 "Intel(R) Pentium(R) III processor",
93 "Intel(R) Pentium(R) III Xeon(tm) processor",
94 "Intel(R) Pentium(R) III processor",
95 NULL,
96 "Mobile Intel(R) Pentium(R) III processor-M",
97 "Mobile Intel(R) Celeron(R) processor"
100 if (i >= sizeof(brandmap))
101 return NULL;
102 else
103 return brandmap[i];
106 static void
107 store32(char *d, unsigned int v)
109 d[0] = v & 0xff;
110 d[1] = (v >> 8) & 0xff;
111 d[2] = (v >> 16) & 0xff;
112 d[3] = (v >> 24) & 0xff;
117 main(void)
119 cpuid_regs_t regs, regs_ext;
120 char idstr[13];
121 unsigned max_cpuid;
122 unsigned max_ext_cpuid;
123 unsigned int amd_flags;
124 unsigned int amd_flags2;
125 const char *model_name = NULL;
126 int i;
127 char processor_name[49];
129 regs = cpuid(0);
130 max_cpuid = regs.eax;
131 /* printf("%d CPUID function codes\n", max_cpuid+1); */
133 store32(idstr+0, regs.ebx);
134 store32(idstr+4, regs.edx);
135 store32(idstr+8, regs.ecx);
136 idstr[12] = 0;
137 printf("vendor_id\t: %s\n", idstr);
139 regs_ext = cpuid((1<<31) + 0);
140 max_ext_cpuid = regs_ext.eax;
141 if (max_ext_cpuid >= (1<<31) + 1) {
142 regs_ext = cpuid((1<<31) + 1);
143 amd_flags = regs_ext.edx;
144 amd_flags2 = regs_ext.ecx;
146 if (max_ext_cpuid >= (1<<31) + 4) {
147 for (i = 2; i <= 4; i++) {
148 regs_ext = cpuid((1<<31) + i);
149 store32(processor_name + (i-2)*16, regs_ext.eax);
150 store32(processor_name + (i-2)*16 + 4, regs_ext.ebx);
151 store32(processor_name + (i-2)*16 + 8, regs_ext.ecx);
152 store32(processor_name + (i-2)*16 + 12, regs_ext.edx);
154 processor_name[48] = 0;
155 model_name = processor_name;
156 while (*model_name == ' ') {
157 model_name++;
160 } else {
161 amd_flags = 0;
162 amd_flags2 = 0;
165 if (max_cpuid >= 1) {
166 static struct {
167 int bit;
168 char *desc;
169 } cap[] = {
170 CPUID_FEATURE_DEF(0, "fpu", "Floating-point unit on-chip"),
171 CPUID_FEATURE_DEF(1, "vme", "Virtual Mode Enhancements"),
172 CPUID_FEATURE_DEF(2, "de", "Debugging Extension"),
173 CPUID_FEATURE_DEF(3, "pse", "Page Size Extension"),
174 CPUID_FEATURE_DEF(4, "tsc", "Time Stamp Counter"),
175 CPUID_FEATURE_DEF(5, "msr", "Pentium Processor MSR"),
176 CPUID_FEATURE_DEF(6, "pae", "Physical Address Extension"),
177 CPUID_FEATURE_DEF(7, "mce", "Machine Check Exception"),
178 CPUID_FEATURE_DEF(8, "cx8", "CMPXCHG8B Instruction Supported"),
179 CPUID_FEATURE_DEF(9, "apic", "On-chip APIC Hardware Enabled"),
180 CPUID_FEATURE_DEF(11, "sep", "SYSENTER and SYSEXIT"),
181 CPUID_FEATURE_DEF(12, "mtrr", "Memory Type Range Registers"),
182 CPUID_FEATURE_DEF(13, "pge", "PTE Global Bit"),
183 CPUID_FEATURE_DEF(14, "mca", "Machine Check Architecture"),
184 CPUID_FEATURE_DEF(15, "cmov", "Conditional Move/Compare Instruction"),
185 CPUID_FEATURE_DEF(16, "pat", "Page Attribute Table"),
186 CPUID_FEATURE_DEF(17, "pse36", "Page Size Extension 36-bit"),
187 CPUID_FEATURE_DEF(18, "pn", "Processor Serial Number"),
188 CPUID_FEATURE_DEF(19, "clflush", "CFLUSH instruction"),
189 CPUID_FEATURE_DEF(21, "dts", "Debug Store"),
190 CPUID_FEATURE_DEF(22, "acpi", "Thermal Monitor and Clock Ctrl"),
191 CPUID_FEATURE_DEF(23, "mmx", "MMX Technology"),
192 CPUID_FEATURE_DEF(24, "fxsr", "FXSAVE/FXRSTOR"),
193 CPUID_FEATURE_DEF(25, "sse", "SSE Extensions"),
194 CPUID_FEATURE_DEF(26, "sse2", "SSE2 Extensions"),
195 CPUID_FEATURE_DEF(27, "ss", "Self Snoop"),
196 CPUID_FEATURE_DEF(28, "ht", "Multi-threading"),
197 CPUID_FEATURE_DEF(29, "tm", "Therm. Monitor"),
198 CPUID_FEATURE_DEF(30, "ia64", "IA-64 Processor"),
199 CPUID_FEATURE_DEF(31, "pbe", "Pend. Brk. EN."),
200 { -1 }
202 static struct {
203 int bit;
204 char *desc;
205 } cap2[] = {
206 CPUID_FEATURE_DEF(0, "pni", "SSE3 Extensions"),
207 CPUID_FEATURE_DEF(1, "pclmulqdq", "Carryless Multiplication"),
208 CPUID_FEATURE_DEF(2, "dtes64", "64-bit Debug Store"),
209 CPUID_FEATURE_DEF(3, "monitor", "MONITOR/MWAIT"),
210 CPUID_FEATURE_DEF(4, "ds_cpl", "CPL Qualified Debug Store"),
211 CPUID_FEATURE_DEF(5, "vmx", "Virtual Machine Extensions"),
212 CPUID_FEATURE_DEF(6, "smx", "Safer Mode Extensions"),
213 CPUID_FEATURE_DEF(7, "est", "Enhanced Intel SpeedStep Technology"),
214 CPUID_FEATURE_DEF(8, "tm2", "Thermal Monitor 2"),
215 CPUID_FEATURE_DEF(9, "ssse3", "Supplemental SSE3"),
216 CPUID_FEATURE_DEF(10, "cid", "L1 Context ID"),
217 CPUID_FEATURE_DEF(12, "fma", "Fused Multiply Add"),
218 CPUID_FEATURE_DEF(13, "cx16", "CMPXCHG16B Available"),
219 CPUID_FEATURE_DEF(14, "xtpr", "xTPR Disable"),
220 CPUID_FEATURE_DEF(15, "pdcm", "Perf/Debug Capability MSR"),
221 CPUID_FEATURE_DEF(18, "dca", "Direct Cache Access"),
222 CPUID_FEATURE_DEF(19, "sse4_1", "SSE4.1 Extensions"),
223 CPUID_FEATURE_DEF(20, "sse4_2", "SSE4.2 Extensions"),
224 CPUID_FEATURE_DEF(21, "x2apic", "x2APIC Feature"),
225 CPUID_FEATURE_DEF(22, "movbe", "MOVBE Instruction"),
226 CPUID_FEATURE_DEF(23, "popcnt", "Pop Count Instruction"),
227 CPUID_FEATURE_DEF(25, "aes", "AES Instruction"),
228 CPUID_FEATURE_DEF(26, "xsave", "XSAVE/XRSTOR Extensions"),
229 CPUID_FEATURE_DEF(27, "osxsave", "XSAVE/XRSTOR Enabled in the OS"),
230 CPUID_FEATURE_DEF(28, "avx", "Advanced Vector Extension"),
231 { -1 }
233 static struct {
234 int bit;
235 char *desc;
236 } cap_amd[] = {
237 CPUID_FEATURE_DEF(11, "syscall", "SYSCALL and SYSRET"),
238 CPUID_FEATURE_DEF(19, "mp", "MP Capable"),
239 CPUID_FEATURE_DEF(20, "nx", "No-Execute Page Protection"),
240 CPUID_FEATURE_DEF(22, "mmxext", "MMX Technology (AMD Extensions)"),
241 CPUID_FEATURE_DEF(25, "fxsr_opt", "Fast FXSAVE/FXRSTOR"),
242 CPUID_FEATURE_DEF(26, "pdpe1gb", "PDP Entry for 1GiB Page"),
243 CPUID_FEATURE_DEF(27, "rdtscp", "RDTSCP Instruction"),
244 CPUID_FEATURE_DEF(29, "lm", "Long Mode Capable"),
245 CPUID_FEATURE_DEF(30, "3dnowext", "3DNow! Extensions"),
246 CPUID_FEATURE_DEF(31, "3dnow", "3DNow!"),
247 { -1 }
249 static struct {
250 int bit;
251 char *desc;
252 } cap_amd2[] = {
253 CPUID_FEATURE_DEF(0, "lahf_lm", "LAHF/SAHF Supported in 64-bit Mode"),
254 CPUID_FEATURE_DEF(1, "cmp_legacy", "Chip Multi-Core"),
255 CPUID_FEATURE_DEF(2, "svm", "Secure Virtual Machine"),
256 CPUID_FEATURE_DEF(3, "extapic", "Extended APIC Space"),
257 CPUID_FEATURE_DEF(4, "cr8_legacy", "CR8 Available in Legacy Mode"),
258 CPUID_FEATURE_DEF(5, "abm", "Advanced Bit Manipulation"),
259 CPUID_FEATURE_DEF(6, "sse4a", "SSE4A Extensions"),
260 CPUID_FEATURE_DEF(7, "misalignsse", "Misaligned SSE Mode"),
261 CPUID_FEATURE_DEF(8, "3dnowprefetch", "3DNow! Prefetch/PrefetchW"),
262 CPUID_FEATURE_DEF(9, "osvw", "OS Visible Workaround"),
263 CPUID_FEATURE_DEF(10, "ibs", "Instruction Based Sampling"),
264 CPUID_FEATURE_DEF(11, "sse5", "SSE5 Extensions"),
265 CPUID_FEATURE_DEF(12, "skinit", "SKINIT, STGI, and DEV Support"),
266 CPUID_FEATURE_DEF(13, "wdt", "Watchdog Timer Support"),
267 { -1 }
269 unsigned int family, model, stepping;
271 regs = cpuid(1);
272 family = (regs.eax >> 8) & 0xf;
273 model = (regs.eax >> 4) & 0xf;
274 stepping = regs.eax & 0xf;
276 if (family == 0xf)
277 family += (regs.eax >> 20) & 0xff;
278 if (family == 0xf || family == 6)
279 model += ((regs.eax >> 16) & 0xf) << 4;
281 printf("cpu family\t: %d\n"
282 "model\t\t: %d\n"
283 "stepping\t: %d\n" ,
284 family,
285 model,
286 stepping);
288 if (strstr(idstr, "Intel") && !model_name) {
289 if (family == 6 && model == 0xb && stepping == 1)
290 model_name = "Intel (R) Celeron (R) processor";
291 else
292 model_name = brandname(regs.ebx & 0xf);
295 printf("flags\t\t:");
296 for (i = 0; cap[i].bit >= 0; i++) {
297 if (regs.edx & (1 << cap[i].bit)) {
298 printf(" %s", cap[i].desc);
301 for (i = 0; cap2[i].bit >= 0; i++) {
302 if (regs.ecx & (1 << cap2[i].bit)) {
303 printf(" %s", cap2[i].desc);
306 /* k6_mtrr is supported by some AMD K6-2/K6-III CPUs but
307 it is not indicated by a CPUID feature bit, so we
308 have to check the family, model and stepping instead. */
309 if (strstr(idstr, "AMD") &&
310 family == 5 &&
311 (model >= 9 || (model == 8 && stepping >= 8)))
312 printf(" %s", "k6_mtrr");
313 /* similar for cyrix_arr. */
314 if (strstr(idstr, "Cyrix") &&
315 (family == 5 && (model < 4 || family == 6)))
316 printf(" %s", "cyrix_arr");
317 /* as well as centaur_mcr. */
318 if (strstr(idstr, "Centaur") &&
319 family == 5)
320 printf(" %s", "centaur_mcr");
322 for (i = 0; cap_amd[i].bit >= 0; i++) {
323 if (amd_flags & (1 << cap_amd[i].bit)) {
324 printf(" %s", cap_amd[i].desc);
327 for (i = 0; cap_amd2[i].bit >= 0; i++) {
328 if (amd_flags2 & (1 << cap_amd2[i].bit)) {
329 printf(" %s", cap_amd2[i].desc);
332 printf("\n");
334 if (regs.edx & (1 << 4)) {
335 int64_t tsc_start, tsc_end;
336 struct timeval tv_start, tv_end;
337 int usec_delay;
339 tsc_start = rdtsc();
340 gettimeofday(&tv_start, NULL);
341 #ifdef MISSING_USLEEP
342 sleep(1);
343 #else
344 usleep(100000);
345 #endif
346 tsc_end = rdtsc();
347 gettimeofday(&tv_end, NULL);
349 usec_delay = 1000000 * (tv_end.tv_sec - tv_start.tv_sec)
350 + (tv_end.tv_usec - tv_start.tv_usec);
352 printf("cpu MHz\t\t: %.3f\n",
353 (double)(tsc_end-tsc_start) / usec_delay);
357 printf("model name\t: ");
358 if (model_name)
359 printf("%s\n", model_name);
360 else
361 printf("Unknown %s CPU\n", idstr);