misc/cpu.c

   1 /*
   2  * What processor?
   3  *
   4  * Copyright 1995,1997 Morten Welinder
   5  * Copyright 1997-1998 Marcus Meissner
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #ifdef HAVE_SYS_PARAM_H
  26 # include <sys/param.h>
  27 #endif
  28 #ifdef HAVE_SYS_SYSCTL_H
  29 # include <sys/sysctl.h>
  30 #endif
  31 #ifdef HAVE_MACHINE_CPU_H
  32 # include <machine/cpu.h>
  33 #endif
  34
  35 #include <ctype.h>
  36 #include <string.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #ifdef HAVE_SYS_TIME_H
  40 # include <sys/time.h>
  41 #endif
  42
  43
  44 #define NONAMELESSUNION
  45 #define NONAMELESSSTRUCT
  46 #include "winbase.h"
  47 #include "winnt.h"
  48 #include "winternl.h"
  49 #include "winerror.h"
  50 #include "wine/unicode.h"
  51 #include "wine/debug.h"
  52
  53 WINE_DEFAULT_DEBUG_CHANNEL(reg);
  54
  55 #define AUTH    0x68747541      /* "Auth" */
  56 #define ENTI    0x69746e65      /* "enti" */
  57 #define CAMD    0x444d4163      /* "cAMD" */
  58
  59 /* Calls cpuid with an eax of 'ax' and returns the 16 bytes in *p
  60  * We are compiled with -fPIC, so we can't clobber ebx.
  61  */
  62 static inline void do_cpuid(int ax, int *p)
  63 {
  64 #ifdef __i386__
  65         __asm__("pushl %%ebx\n\t"
  66                 "cpuid\n\t"
  67                 "movl %%ebx, %%esi\n\t"
  68                 "popl %%ebx"
  69                 : "=a" (p[0]), "=S" (p[1]), "=c" (p[2]), "=d" (p[3])
  70                 :  "0" (ax));
  71 #endif
  72 }
  73
  74 /* From xf86info havecpuid.c 1.11 */
  75 static inline int have_cpuid(void)
  76 {
  77 #ifdef __i386__
  78         unsigned int f1, f2;
  79         __asm__("pushfl\n\t"
  80                 "pushfl\n\t"
  81                 "popl %0\n\t"
  82                 "movl %0,%1\n\t"
  83                 "xorl %2,%0\n\t"
  84                 "pushl %0\n\t"
  85                 "popfl\n\t"
  86                 "pushfl\n\t"
  87                 "popl %0\n\t"
  88                 "popfl"
  89                 : "=&r" (f1), "=&r" (f2)
  90                 : "ir" (0x00200000));
  91         return ((f1^f2) & 0x00200000) != 0;
  92 #else
  93         return 0;
  94 #endif
  95 }
  96
  97 static BYTE PF[64] = {0,};
  98 static ULONGLONG cpuHz = 1000000000; /* default to a 1GHz */
  99
 100 static void create_registry_keys( const SYSTEM_INFO *info )
 101 {
 102     static const WCHAR SystemW[] = {'M','a','c','h','i','n','e','\\',
 103                                     'H','a','r','d','w','a','r','e','\\',
 104                                     'D','e','s','c','r','i','p','t','i','o','n','\\',
 105                                     'S','y','s','t','e','m',0};
 106     static const WCHAR fpuW[] = {'F','l','o','a','t','i','n','g','P','o','i','n','t','P','r','o','c','e','s','s','o','r',0};
 107     static const WCHAR cpuW[] = {'C','e','n','t','r','a','l','P','r','o','c','e','s','s','o','r',0};
 108     static const WCHAR IdentifierW[] = {'I','d','e','n','t','i','f','i','e','r',0};
 109     static const WCHAR SysidW[] = {'A','T',' ','c','o','m','p','a','t','i','b','l','e',0};
 110     static const WCHAR mhzKeyW[] = {'~','M','H','z',0};
 111
 112     int i;
 113     HKEY hkey, system_key, cpu_key;
 114     OBJECT_ATTRIBUTES attr;
 115     UNICODE_STRING nameW, valueW;
 116
 117     attr.Length = sizeof(attr);
 118     attr.RootDirectory = 0;
 119     attr.ObjectName = &nameW;
 120     attr.Attributes = 0;
 121     attr.SecurityDescriptor = NULL;
 122     attr.SecurityQualityOfService = NULL;
 123
 124     RtlInitUnicodeString( &nameW, SystemW );
 125     if (NtCreateKey( &system_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) return;
 126
 127     RtlInitUnicodeString( &valueW, IdentifierW );
 128     NtSetValueKey( system_key, &valueW, 0, REG_SZ, SysidW, (strlenW(SysidW)+1) * sizeof(WCHAR) );
 129
 130     attr.RootDirectory = system_key;
 131     RtlInitUnicodeString( &nameW, fpuW );
 132     if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) NtClose( hkey );
 133
 134     RtlInitUnicodeString( &nameW, cpuW );
 135     if (!NtCreateKey( &cpu_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ))
 136     {
 137         for (i = 0; i < info->dwNumberOfProcessors; i++)
 138         {
 139             char num[10], id[20];
 140
 141             attr.RootDirectory = cpu_key;
 142             sprintf( num, "%d", i );
 143             RtlCreateUnicodeStringFromAsciiz( &nameW, num );
 144             if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ))
 145             {
 146                 WCHAR idW[20];
 147                 DWORD cpuMHz = cpuHz / 1000000;
 148
 149                 sprintf( id, "CPU %ld", info->dwProcessorType );
 150                 RtlMultiByteToUnicodeN( idW, sizeof(idW), NULL, id, strlen(id)+1 );
 151                 NtSetValueKey( hkey, &valueW, 0, REG_SZ, idW, (strlenW(idW)+1)*sizeof(WCHAR) );
 152
 153                 RtlInitUnicodeString( &valueW, mhzKeyW );
 154                 NtSetValueKey( hkey, &valueW, 0, REG_DWORD, &cpuMHz, sizeof(DWORD) );
 155                 NtClose( hkey );
 156             }
 157             RtlFreeUnicodeString( &nameW );
 158         }
 159         NtClose( cpu_key );
 160     }
 161     NtClose( system_key );
 162 }
 163
 164 /****************************************************************************
 165  *              QueryPerformanceCounter (KERNEL32.@)
 166  */
 167 BOOL WINAPI QueryPerformanceCounter(PLARGE_INTEGER counter)
 168 {
 169     struct timeval tv;
 170
 171 #if defined(__i386__) && defined(__GNUC__)
 172     if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
 173         /* i586 optimized version */
 174         __asm__ __volatile__ ( "rdtsc"
 175                                : "=a" (counter->s.LowPart), "=d" (counter->s.HighPart) );
 176         counter->QuadPart = counter->QuadPart / 1000; /* see below */
 177         return TRUE;
 178     }
 179 #endif
 180
 181     /* fall back to generic routine (ie, for i386, i486) */
 182     gettimeofday( &tv, NULL );
 183     counter->QuadPart = (LONGLONG)tv.tv_usec + (LONGLONG)tv.tv_sec * 1000000;
 184     return TRUE;
 185 }
 186
 187
 188 /****************************************************************************
 189  *              QueryPerformanceFrequency (KERNEL32.@)
 190  */
 191 BOOL WINAPI QueryPerformanceFrequency(PLARGE_INTEGER frequency)
 192 {
 193 #if defined(__i386__) && defined(__GNUC__)
 194     if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
 195         /* The way Windows calculates this value is unclear, however simply using the CPU frequency
 196            gives a value out by approximately a thousand. That can cause some applications to crash,
 197            so we divide here to make our number more similar to the one Windows gives  */
 198         frequency->QuadPart = cpuHz / 1000;
 199         return TRUE;
 200     }
 201 #endif
 202     frequency->s.LowPart  = 1000000;
 203     frequency->s.HighPart = 0;
 204     return TRUE;
 205 }
 206
 207
 208 /***********************************************************************
 209  *                      GetSystemInfo                   [KERNEL32.@]
 210  *
 211  * Gets the current system information.
 212  *
 213  * On the first call it creates cached values, so it doesn't have to determine
 214  * them repeatedly. On Linux, the /proc/cpuinfo special file is used.
 215  *
 216  * It creates a registry subhierarchy, looking like:
 217  * \HARDWARE\DESCRIPTION\System\CentralProcessor\<processornumber>\
 218  *                                                      Identifier (CPU x86)
 219  * Note that there is a hierarchy for every processor installed, so this
 220  * supports multiprocessor systems. This is done like Win95 does it, I think.
 221  *
 222  * It also creates a cached flag array for IsProcessorFeaturePresent().
 223  *
 224  * No NULL ptr check for LPSYSTEM_INFO in Win9x.
 225  *
 226  * RETURNS
 227  *      nothing, really
 228  */
 229 VOID WINAPI GetSystemInfo(
 230         LPSYSTEM_INFO si        /* [out] system information */
 231 ) {
 232         static int cache = 0;
 233         static SYSTEM_INFO cachedsi;
 234
 235         TRACE("si=0x%p\n", si);
 236         if (cache) {
 237                 memcpy(si,&cachedsi,sizeof(*si));
 238                 return;
 239         }
 240         memset(PF,0,sizeof(PF));
 241
 242         /* choose sensible defaults ...
 243          * FIXME: perhaps overrideable with precompiler flags?
 244          */
 245         cachedsi.u.s.wProcessorArchitecture     = PROCESSOR_ARCHITECTURE_INTEL;
 246         cachedsi.dwPageSize                     = getpagesize();
 247
 248         /* FIXME: the two entries below should be computed somehow... */
 249         cachedsi.lpMinimumApplicationAddress    = (void *)0x00010000;
 250         cachedsi.lpMaximumApplicationAddress    = (void *)0x7FFFFFFF;
 251         cachedsi.dwActiveProcessorMask          = 1;
 252         cachedsi.dwNumberOfProcessors           = 1;
 253         cachedsi.dwProcessorType                = PROCESSOR_INTEL_PENTIUM;
 254         cachedsi.dwAllocationGranularity        = 0x10000;
 255         cachedsi.wProcessorLevel                = 5; /* 586 */
 256         cachedsi.wProcessorRevision             = 0;
 257
 258         cache = 1; /* even if there is no more info, we now have a cacheentry */
 259         memcpy(si,&cachedsi,sizeof(*si));
 260
 261         /* Hmm, reasonable processor feature defaults? */
 262
 263 #ifdef linux
 264         {
 265         char line[200];
 266         FILE *f = fopen ("/proc/cpuinfo", "r");
 267
 268         if (!f)
 269                 return;
 270         while (fgets(line,200,f)!=NULL) {
 271                 char    *s,*value;
 272
 273                 /* NOTE: the ':' is the only character we can rely on */
 274                 if (!(value = strchr(line,':')))
 275                         continue;
 276                 /* terminate the valuename */
 277                 *value++ = '\0';
 278                 /* skip any leading spaces */
 279                 while (*value==' ') value++;
 280                 if ((s=strchr(value,'\n')))
 281                         *s='\0';
 282
 283                 /* 2.1 method */
 284                 if (!strncasecmp(line, "cpu family",strlen("cpu family"))) {
 285                         if (isdigit (value[0])) {
 286                                 switch (value[0] - '0') {
 287                                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 288                                         cachedsi.wProcessorLevel= 3;
 289                                         break;
 290                                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 291                                         cachedsi.wProcessorLevel= 4;
 292                                         break;
 293                                 case 5:
 294                                 case 6: /* PPro/2/3 has same info as P1 */
 295                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 296                                         cachedsi.wProcessorLevel= 5;
 297                                         break;
 298                                 case 1: /* two-figure levels */
 299                                     if (value[1] == '5')
 300                                     {
 301                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 302                                         cachedsi.wProcessorLevel= 5;
 303                                         break;
 304                                     }
 305                                     /* fall through */
 306                                 default:
 307                                         FIXME("unknown cpu family '%s', please report ! (-> setting to 386)\n", value);
 308                                         break;
 309                                 }
 310                         }
 311                         continue;
 312                 }
 313                 /* old 2.0 method */
 314                 if (!strncasecmp(line, "cpu",strlen("cpu"))) {
 315                         if (    isdigit (value[0]) && value[1] == '8' &&
 316                                 value[2] == '6' && value[3] == 0
 317                         ) {
 318                                 switch (value[0] - '0') {
 319                                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 320                                         cachedsi.wProcessorLevel= 3;
 321                                         break;
 322                                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 323                                         cachedsi.wProcessorLevel= 4;
 324                                         break;
 325                                 case 5:
 326                                 case 6: /* PPro/2/3 has same info as P1 */
 327                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 328                                         cachedsi.wProcessorLevel= 5;
 329                                         break;
 330                                 default:
 331                                         FIXME("unknown Linux 2.0 cpu family '%s', please report ! (-> setting to 386)\n", value);
 332                                         break;
 333                                 }
 334                         }
 335                         continue;
 336                 }
 337                 if (!strncasecmp(line,"fdiv_bug",strlen("fdiv_bug"))) {
 338                         if (!strncasecmp(value,"yes",3))
 339                                 PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE;
 340
 341                         continue;
 342                 }
 343                 if (!strncasecmp(line,"fpu",strlen("fpu"))) {
 344                         if (!strncasecmp(value,"no",2))
 345                                 PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 346
 347                         continue;
 348                 }
 349                 if (!strncasecmp(line,"processor",strlen("processor"))) {
 350                         /* processor number counts up... */
 351                         unsigned int x;
 352
 353                         if (sscanf(value,"%d",&x))
 354                                 if (x+1>cachedsi.dwNumberOfProcessors)
 355                                         cachedsi.dwNumberOfProcessors=x+1;
 356                 }
 357                 if (!strncasecmp(line,"stepping",strlen("stepping"))) {
 358                         int     x;
 359
 360                         if (sscanf(value,"%d",&x))
 361                                 cachedsi.wProcessorRevision = x;
 362                 }
 363                 if (!strncasecmp(line, "cpu MHz",strlen("cpu MHz"))) {
 364                         double cmz;
 365                         if (sscanf( value, "%lf", &cmz ) == 1) {
 366                                 /* SYSTEMINFO doesn't have a slot for cpu speed, so store in a global */
 367                                 cpuHz = cmz * 1000 * 1000;
 368                                 TRACE("CPU speed read as %lld\n", cpuHz);
 369                         }
 370                 }
 371                 if (    !strncasecmp(line,"flags",strlen("flags"))      ||
 372                         !strncasecmp(line,"features",strlen("features"))
 373                 ) {
 374                         if (strstr(value,"cx8"))
 375                                 PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
 376                         if (strstr(value,"mmx"))
 377                                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 378                         if (strstr(value,"tsc"))
 379                                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
 380                         if (strstr(value,"3dnow"))
 381                                 PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = TRUE;
 382                         /* This will also catch sse2, but we have sse itself
 383                          * if we have sse2, so no problem */
 384                         if (strstr(value,"sse"))
 385                                 PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = TRUE;
 386                         if (strstr(value,"sse2"))
 387                                 PF[PF_XMMI64_INSTRUCTIONS_AVAILABLE] = TRUE;
 388                         if (strstr(value,"pae"))
 389                                 PF[PF_PAE_ENABLED] = TRUE;
 390
 391                 }
 392         }
 393         fclose (f);
 394         }
 395         memcpy(si,&cachedsi,sizeof(*si));
 396 #elif defined (__NetBSD__)
 397         {
 398              int mib[2];
 399              int value[2];
 400              char model[256];
 401              char *cpuclass;
 402              FILE *f = fopen ("/var/run/dmesg.boot", "r");
 403
 404              /* first deduce as much as possible from the sysctls */
 405              mib[0] = CTL_MACHDEP;
 406 #ifdef CPU_FPU_PRESENT
 407              mib[1] = CPU_FPU_PRESENT;
 408              value[1] = sizeof(int);
 409              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 410                  if (value) PF[PF_FLOATING_POINT_EMULATED] = FALSE;
 411                  else       PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 412 #endif
 413 #ifdef CPU_SSE
 414              mib[1] = CPU_SSE;   /* this should imply MMX */
 415              value[1] = sizeof(int);
 416              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 417                  if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 418 #endif
 419 #ifdef CPU_SSE2
 420              mib[1] = CPU_SSE2;  /* this should imply MMX */
 421              value[1] = sizeof(int);
 422              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 423                  if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 424 #endif
 425              mib[0] = CTL_HW;
 426              mib[1] = HW_NCPU;
 427              value[1] = sizeof(int);
 428              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 429                  if (value[0] > cachedsi.dwNumberOfProcessors)
 430                     cachedsi.dwNumberOfProcessors = value[0];
 431              mib[1] = HW_MODEL;
 432              value[1] = 255;
 433              if (sysctl(mib, 2, model, value+1, NULL, 0) >= 0) {
 434                   model[value[1]] = '\0'; /* just in case */
 435                   cpuclass = strstr(model, "-class");
 436                   if (cpuclass != NULL) {
 437                        while(cpuclass > model && cpuclass[0] != '(') cpuclass--;
 438                        if (!strncmp(cpuclass+1, "386", 3)) {
 439                             cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 440                             cachedsi.wProcessorLevel= 3;
 441                        }
 442                        if (!strncmp(cpuclass+1, "486", 3)) {
 443                             cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 444                             cachedsi.wProcessorLevel= 4;
 445                        }
 446                        if (!strncmp(cpuclass+1, "586", 3)) {
 447                             cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 448                             cachedsi.wProcessorLevel= 5;
 449                        }
 450                        if (!strncmp(cpuclass+1, "686", 3)) {
 451                             cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 452                             cachedsi.wProcessorLevel= 5;
 453                             /* this should imply MMX */
 454                             PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 455                        }
 456                   }
 457              }
 458
 459              /* it may be worth reading from /var/run/dmesg.boot for
 460                 additional information such as CX8, MMX and TSC
 461                 (however this information should be considered less
 462                  reliable than that from the sysctl calls) */
 463              if (f != NULL)
 464              {
 465                  while (fgets(model, 255, f) != NULL) {
 466                         if (sscanf(model,"cpu%d: features %x<", value, value+1) == 2) {
 467                             /* we could scan the string but it is easier
 468                                to test the bits directly */
 469                             if (value[1] & 0x1)
 470                                 PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 471                             if (value[1] & 0x10)
 472                                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
 473                             if (value[1] & 0x100)
 474                                 PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
 475                             if (value[1] & 0x800000)
 476                                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 477
 478                             break;
 479                         }
 480                  }
 481                  fclose(f);
 482              }
 483
 484         }
 485         memcpy(si,&cachedsi,sizeof(*si));
 486 #elif defined(__FreeBSD__)
 487         {
 488         unsigned int regs[4], regs2[4];
 489         int ret, len, num;
 490         if (!have_cpuid())
 491                 regs[0] = 0;                    /* No cpuid support -- skip the rest */
 492         else
 493                 do_cpuid(0x00000000, regs);     /* get standard cpuid level and vendor name */
 494         if (regs[0]>=0x00000001) {              /* Check for supported cpuid version */
 495                 do_cpuid(0x00000001, regs2);    /* get cpu features */
 496                 switch ((regs2[0] >> 8)&0xf) {  /* cpu family */
 497                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 498                         cachedsi.wProcessorLevel = 3;
 499                         break;
 500                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 501                         cachedsi.wProcessorLevel = 4;
 502                         break;
 503                 case 5:
 504                 case 6:
 505                 case 15: /* PPro/2/3/4 has same info as P1 */
 506                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 507                         cachedsi.wProcessorLevel = 5;
 508                         break;
 509                 default:
 510                         FIXME("unknown FreeBSD cpu family %d, please report! (-> setting to 386)\n", \
 511                                 (regs2[0] >> 8)&0xf);
 512                         break;
 513                 }
 514                 PF[PF_FLOATING_POINT_EMULATED]     = !(regs2[3] & 1);
 515                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = (regs2[3] & (1 << 4 )) >> 4;
 516                 PF[PF_COMPARE_EXCHANGE_DOUBLE]     = (regs2[3] & (1 << 8 )) >> 8;
 517                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE]  = (regs2[3] & (1 << 23)) >> 23;
 518                 /* Check for OS support of SSE -- Is this used, and should it be sse1 or sse2? */
 519                 /*len = sizeof(num);
 520                 ret = sysctlbyname("hw.instruction_sse", &num, &len, NULL, 0);
 521                 if (!ret)
 522                         PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = num;*/
 523
 524                 if (regs[1] == AUTH &&
 525                     regs[3] == ENTI &&
 526                     regs[2] == CAMD) {
 527                         do_cpuid(0x80000000, regs);             /* get vendor cpuid level */
 528                         if (regs[0]>=0x80000001) {
 529                                 do_cpuid(0x80000001, regs2);    /* get vendor features */
 530                                 PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] =
 531                                     (regs2[3] & (1 << 31 )) >> 31;
 532                         }
 533                 }
 534         }
 535         len = sizeof(num);
 536         ret = sysctlbyname("hw.ncpu", &num, &len, NULL, 0);
 537         if (!ret)
 538                 cachedsi.dwNumberOfProcessors = num;
 539         }
 540         memcpy(si,&cachedsi,sizeof(*si));
 541 #else
 542         FIXME("not yet supported on this system\n");
 543 #endif
 544         TRACE("<- CPU arch %d, res'd %d, pagesize %ld, minappaddr %p, maxappaddr %p,"
 545               " act.cpumask %08lx, numcpus %ld, CPU type %ld, allocgran. %ld, CPU level %d, CPU rev %d\n",
 546               si->u.s.wProcessorArchitecture, si->u.s.wReserved, si->dwPageSize,
 547               si->lpMinimumApplicationAddress, si->lpMaximumApplicationAddress,
 548               si->dwActiveProcessorMask, si->dwNumberOfProcessors, si->dwProcessorType,
 549               si->dwAllocationGranularity, si->wProcessorLevel, si->wProcessorRevision);
 550
 551         create_registry_keys( &cachedsi );
 552 }
 553
 554
 555 /***********************************************************************
 556  *                      IsProcessorFeaturePresent       [KERNEL32.@]
 557  * RETURNS:
 558  *      TRUE if processor feature present
 559  *      FALSE otherwise
 560  */
 561 BOOL WINAPI IsProcessorFeaturePresent (
 562         DWORD feature   /* [in] feature number, see PF_ defines */
 563 ) {
 564   SYSTEM_INFO si;
 565   GetSystemInfo (&si); /* To ensure the information is loaded and cached */
 566
 567   if (feature < 64)
 568     return PF[feature];
 569   else
 570     return FALSE;
 571 }