git.oblomov.eu Git - wine/blob - 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 <stdarg.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #ifdef HAVE_SYS_TIME_H
  41 # include <sys/time.h>
  42 #endif
  43
  44
  45 #define NONAMELESSUNION
  46 #define NONAMELESSSTRUCT
  47 #include "windef.h"
  48 #include "winbase.h"
  49 #include "winnt.h"
  50 #include "winreg.h"
  51 #include "winternl.h"
  52 #include "winerror.h"
  53 #include "wine/unicode.h"
  54 #include "wine/debug.h"
  55
  56 WINE_DEFAULT_DEBUG_CHANNEL(reg);
  57
  58 #define AUTH    0x68747541      /* "Auth" */
  59 #define ENTI    0x69746e65      /* "enti" */
  60 #define CAMD    0x444d4163      /* "cAMD" */
  61
  62 /* Calls cpuid with an eax of 'ax' and returns the 16 bytes in *p
  63  * We are compiled with -fPIC, so we can't clobber ebx.
  64  */
  65 static inline void do_cpuid(int ax, int *p)
  66 {
  67 #ifdef __i386__
  68         __asm__("pushl %%ebx\n\t"
  69                 "cpuid\n\t"
  70                 "movl %%ebx, %%esi\n\t"
  71                 "popl %%ebx"
  72                 : "=a" (p[0]), "=S" (p[1]), "=c" (p[2]), "=d" (p[3])
  73                 :  "0" (ax));
  74 #endif
  75 }
  76
  77 /* From xf86info havecpuid.c 1.11 */
  78 static inline int have_cpuid(void)
  79 {
  80 #ifdef __i386__
  81         unsigned int f1, f2;
  82         __asm__("pushfl\n\t"
  83                 "pushfl\n\t"
  84                 "popl %0\n\t"
  85                 "movl %0,%1\n\t"
  86                 "xorl %2,%0\n\t"
  87                 "pushl %0\n\t"
  88                 "popfl\n\t"
  89                 "pushfl\n\t"
  90                 "popl %0\n\t"
  91                 "popfl"
  92                 : "=&r" (f1), "=&r" (f2)
  93                 : "ir" (0x00200000));
  94         return ((f1^f2) & 0x00200000) != 0;
  95 #else
  96         return 0;
  97 #endif
  98 }
  99
 100 static BYTE PF[64] = {0,};
 101 static ULONGLONG cpuHz = 1000000000; /* default to a 1GHz */
 102
 103 static void create_registry_keys( const SYSTEM_INFO *info )
 104 {
 105     static const WCHAR SystemW[] = {'M','a','c','h','i','n','e','\\',
 106                                     'H','a','r','d','w','a','r','e','\\',
 107                                     'D','e','s','c','r','i','p','t','i','o','n','\\',
 108                                     'S','y','s','t','e','m',0};
 109     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};
 110     static const WCHAR cpuW[] = {'C','e','n','t','r','a','l','P','r','o','c','e','s','s','o','r',0};
 111     static const WCHAR IdentifierW[] = {'I','d','e','n','t','i','f','i','e','r',0};
 112     static const WCHAR SysidW[] = {'A','T',' ','c','o','m','p','a','t','i','b','l','e',0};
 113     static const WCHAR mhzKeyW[] = {'~','M','H','z',0};
 114
 115     int i;
 116     HKEY hkey, system_key, cpu_key;
 117     OBJECT_ATTRIBUTES attr;
 118     UNICODE_STRING nameW, valueW;
 119
 120     attr.Length = sizeof(attr);
 121     attr.RootDirectory = 0;
 122     attr.ObjectName = &nameW;
 123     attr.Attributes = 0;
 124     attr.SecurityDescriptor = NULL;
 125     attr.SecurityQualityOfService = NULL;
 126
 127     RtlInitUnicodeString( &nameW, SystemW );
 128     if (NtCreateKey( &system_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) return;
 129
 130     RtlInitUnicodeString( &valueW, IdentifierW );
 131     NtSetValueKey( system_key, &valueW, 0, REG_SZ, SysidW, (strlenW(SysidW)+1) * sizeof(WCHAR) );
 132
 133     attr.RootDirectory = system_key;
 134     RtlInitUnicodeString( &nameW, fpuW );
 135     if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) NtClose( hkey );
 136
 137     RtlInitUnicodeString( &nameW, cpuW );
 138     if (!NtCreateKey( &cpu_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ))
 139     {
 140         for (i = 0; i < info->dwNumberOfProcessors; i++)
 141         {
 142             char num[10], id[20];
 143
 144             attr.RootDirectory = cpu_key;
 145             sprintf( num, "%d", i );
 146             RtlCreateUnicodeStringFromAsciiz( &nameW, num );
 147             if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ))
 148             {
 149                 WCHAR idW[20];
 150                 DWORD cpuMHz = cpuHz / 1000000;
 151
 152                 sprintf( id, "CPU %ld", info->dwProcessorType );
 153                 RtlMultiByteToUnicodeN( idW, sizeof(idW), NULL, id, strlen(id)+1 );
 154                 NtSetValueKey( hkey, &valueW, 0, REG_SZ, idW, (strlenW(idW)+1)*sizeof(WCHAR) );
 155
 156                 RtlInitUnicodeString( &valueW, mhzKeyW );
 157                 NtSetValueKey( hkey, &valueW, 0, REG_DWORD, &cpuMHz, sizeof(DWORD) );
 158                 NtClose( hkey );
 159             }
 160             RtlFreeUnicodeString( &nameW );
 161         }
 162         NtClose( cpu_key );
 163     }
 164     NtClose( system_key );
 165 }
 166
 167 /****************************************************************************
 168  *              QueryPerformanceCounter (KERNEL32.@)
 169  */
 170 BOOL WINAPI QueryPerformanceCounter(PLARGE_INTEGER counter)
 171 {
 172     struct timeval tv;
 173
 174 #if defined(__i386__) && defined(__GNUC__)
 175     if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
 176         /* i586 optimized version */
 177         __asm__ __volatile__ ( "rdtsc"
 178                                : "=a" (counter->s.LowPart), "=d" (counter->s.HighPart) );
 179         counter->QuadPart = counter->QuadPart / 1000; /* see below */
 180         return TRUE;
 181     }
 182 #endif
 183
 184     /* fall back to generic routine (ie, for i386, i486) */
 185     gettimeofday( &tv, NULL );
 186     counter->QuadPart = (LONGLONG)tv.tv_usec + (LONGLONG)tv.tv_sec * 1000000;
 187     return TRUE;
 188 }
 189
 190
 191 /****************************************************************************
 192  *              QueryPerformanceFrequency (KERNEL32.@)
 193  */
 194 BOOL WINAPI QueryPerformanceFrequency(PLARGE_INTEGER frequency)
 195 {
 196 #if defined(__i386__) && defined(__GNUC__)
 197     if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
 198         /* The way Windows calculates this value is unclear, however simply using the CPU frequency
 199            gives a value out by approximately a thousand. That can cause some applications to crash,
 200            so we divide here to make our number more similar to the one Windows gives  */
 201         frequency->QuadPart = cpuHz / 1000;
 202         return TRUE;
 203     }
 204 #endif
 205     frequency->s.LowPart  = 1000000;
 206     frequency->s.HighPart = 0;
 207     return TRUE;
 208 }
 209
 210
 211 /***********************************************************************
 212  *                      GetSystemInfo                   [KERNEL32.@]
 213  *
 214  * Gets the current system information.
 215  *
 216  * On the first call it creates cached values, so it doesn't have to determine
 217  * them repeatedly. On Linux, the /proc/cpuinfo special file is used.
 218  *
 219  * It creates a registry subhierarchy, looking like:
 220  * \HARDWARE\DESCRIPTION\System\CentralProcessor\<processornumber>\
 221  *                                                      Identifier (CPU x86)
 222  * Note that there is a hierarchy for every processor installed, so this
 223  * supports multiprocessor systems. This is done like Win95 does it, I think.
 224  *
 225  * It also creates a cached flag array for IsProcessorFeaturePresent().
 226  *
 227  * No NULL ptr check for LPSYSTEM_INFO in Win9x.
 228  *
 229  * RETURNS
 230  *      nothing, really
 231  */
 232 VOID WINAPI GetSystemInfo(
 233         LPSYSTEM_INFO si        /* [out] system information */
 234 ) {
 235         static int cache = 0;
 236         static SYSTEM_INFO cachedsi;
 237
 238         TRACE("si=0x%p\n", si);
 239         if (cache) {
 240                 memcpy(si,&cachedsi,sizeof(*si));
 241                 return;
 242         }
 243         memset(PF,0,sizeof(PF));
 244
 245         /* choose sensible defaults ...
 246          * FIXME: perhaps overrideable with precompiler flags?
 247          */
 248         cachedsi.u.s.wProcessorArchitecture     = PROCESSOR_ARCHITECTURE_INTEL;
 249         cachedsi.dwPageSize                     = getpagesize();
 250
 251         /* FIXME: the two entries below should be computed somehow... */
 252         cachedsi.lpMinimumApplicationAddress    = (void *)0x00010000;
 253         cachedsi.lpMaximumApplicationAddress    = (void *)0x7FFFFFFF;
 254         cachedsi.dwActiveProcessorMask          = 1;
 255         cachedsi.dwNumberOfProcessors           = 1;
 256         cachedsi.dwProcessorType                = PROCESSOR_INTEL_PENTIUM;
 257         cachedsi.dwAllocationGranularity        = 0x10000;
 258         cachedsi.wProcessorLevel                = 5; /* 586 */
 259         cachedsi.wProcessorRevision             = 0;
 260
 261         cache = 1; /* even if there is no more info, we now have a cacheentry */
 262         memcpy(si,&cachedsi,sizeof(*si));
 263
 264         /* Hmm, reasonable processor feature defaults? */
 265
 266 #ifdef linux
 267         {
 268         char line[200];
 269         FILE *f = fopen ("/proc/cpuinfo", "r");
 270
 271         if (!f)
 272                 return;
 273         while (fgets(line,200,f)!=NULL) {
 274                 char    *s,*value;
 275
 276                 /* NOTE: the ':' is the only character we can rely on */
 277                 if (!(value = strchr(line,':')))
 278                         continue;
 279
 280                 /* terminate the valuename */
 281                 s = value - 1;
 282                 while ((s >= line) && ((*s == ' ') || (*s == '\t'))) s--;
 283                 *(s + 1) = '\0';
 284
 285                 /* and strip leading spaces from value */
 286                 value += 1;
 287                 while (*value==' ') value++;
 288                 if ((s=strchr(value,'\n')))
 289                         *s='\0';
 290
 291                 /* 2.1 method */
 292                 if (!strcasecmp(line, "cpu family")) {
 293                         if (isdigit (value[0])) {
 294                                 switch (value[0] - '0') {
 295                                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 296                                         cachedsi.wProcessorLevel= 3;
 297                                         break;
 298                                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 299                                         cachedsi.wProcessorLevel= 4;
 300                                         break;
 301                                 case 5:
 302                                 case 6: /* PPro/2/3 has same info as P1 */
 303                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 304                                         cachedsi.wProcessorLevel= 5;
 305                                         break;
 306                                 case 1: /* two-figure levels */
 307                                     if (value[1] == '5')
 308                                     {
 309                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 310                                         cachedsi.wProcessorLevel= 5;
 311                                         break;
 312                                     }
 313                                     /* fall through */
 314                                 default:
 315                                         FIXME("unknown cpu family '%s', please report ! (-> setting to 386)\n", value);
 316                                         break;
 317                                 }
 318                         }
 319                         continue;
 320                 }
 321                 /* old 2.0 method */
 322                 if (!strcasecmp(line, "cpu")) {
 323                         if (    isdigit (value[0]) && value[1] == '8' &&
 324                                 value[2] == '6' && value[3] == 0
 325                         ) {
 326                                 switch (value[0] - '0') {
 327                                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 328                                         cachedsi.wProcessorLevel= 3;
 329                                         break;
 330                                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 331                                         cachedsi.wProcessorLevel= 4;
 332                                         break;
 333                                 case 5:
 334                                 case 6: /* PPro/2/3 has same info as P1 */
 335                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 336                                         cachedsi.wProcessorLevel= 5;
 337                                         break;
 338                                 default:
 339                                         FIXME("unknown Linux 2.0 cpu family '%s', please report ! (-> setting to 386)\n", value);
 340                                         break;
 341                                 }
 342                         }
 343                         continue;
 344                 }
 345                 if (!strcasecmp(line,"fdiv_bug")) {
 346                         if (!strncasecmp(value,"yes",3))
 347                                 PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE;
 348
 349                         continue;
 350                 }
 351                 if (!strcasecmp(line,"fpu")) {
 352                         if (!strncasecmp(value,"no",2))
 353                                 PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 354
 355                         continue;
 356                 }
 357                 if (!strcasecmp(line,"processor")) {
 358                         /* processor number counts up... */
 359                         unsigned int x;
 360
 361                         if (sscanf(value,"%d",&x))
 362                                 if (x+1>cachedsi.dwNumberOfProcessors)
 363                                         cachedsi.dwNumberOfProcessors=x+1;
 364
 365                         continue;
 366                 }
 367                 if (!strcasecmp(line,"stepping")) {
 368                         int     x;
 369
 370                         if (sscanf(value,"%d",&x))
 371                                 cachedsi.wProcessorRevision = x;
 372
 373                         continue;
 374                 }
 375                 if (!strcasecmp(line, "cpu MHz")) {
 376                         double cmz;
 377                         if (sscanf( value, "%lf", &cmz ) == 1) {
 378                                 /* SYSTEMINFO doesn't have a slot for cpu speed, so store in a global */
 379                                 cpuHz = cmz * 1000 * 1000;
 380                                 TRACE("CPU speed read as %lld\n", cpuHz);
 381                         }
 382                         continue;
 383                 }
 384                 if (    !strcasecmp(line,"flags")       ||
 385                         !strcasecmp(line,"features")
 386                 ) {
 387                         if (strstr(value,"cx8"))
 388                                 PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
 389                         if (strstr(value,"mmx"))
 390                                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 391                         if (strstr(value,"tsc"))
 392                                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
 393                         if (strstr(value,"3dnow"))
 394                                 PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = TRUE;
 395                         /* This will also catch sse2, but we have sse itself
 396                          * if we have sse2, so no problem */
 397                         if (strstr(value,"sse"))
 398                                 PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = TRUE;
 399                         if (strstr(value,"sse2"))
 400                                 PF[PF_XMMI64_INSTRUCTIONS_AVAILABLE] = TRUE;
 401                         if (strstr(value,"pae"))
 402                                 PF[PF_PAE_ENABLED] = TRUE;
 403
 404                         continue;
 405                 }
 406         }
 407         fclose (f);
 408         }
 409         memcpy(si,&cachedsi,sizeof(*si));
 410 #elif defined (__NetBSD__)
 411         {
 412              int mib[2];
 413              int value[2];
 414              char model[256];
 415              char *cpuclass;
 416              FILE *f = fopen ("/var/run/dmesg.boot", "r");
 417
 418              /* first deduce as much as possible from the sysctls */
 419              mib[0] = CTL_MACHDEP;
 420 #ifdef CPU_FPU_PRESENT
 421              mib[1] = CPU_FPU_PRESENT;
 422              value[1] = sizeof(int);
 423              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 424                  if (value) PF[PF_FLOATING_POINT_EMULATED] = FALSE;
 425                  else       PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 426 #endif
 427 #ifdef CPU_SSE
 428              mib[1] = CPU_SSE;   /* this should imply MMX */
 429              value[1] = sizeof(int);
 430              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 431                  if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 432 #endif
 433 #ifdef CPU_SSE2
 434              mib[1] = CPU_SSE2;  /* this should imply MMX */
 435              value[1] = sizeof(int);
 436              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 437                  if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 438 #endif
 439              mib[0] = CTL_HW;
 440              mib[1] = HW_NCPU;
 441              value[1] = sizeof(int);
 442              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 443                  if (value[0] > cachedsi.dwNumberOfProcessors)
 444                     cachedsi.dwNumberOfProcessors = value[0];
 445              mib[1] = HW_MODEL;
 446              value[1] = 255;
 447              if (sysctl(mib, 2, model, value+1, NULL, 0) >= 0) {
 448                   model[value[1]] = '\0'; /* just in case */
 449                   cpuclass = strstr(model, "-class");
 450                   if (cpuclass != NULL) {
 451                        while(cpuclass > model && cpuclass[0] != '(') cpuclass--;
 452                        if (!strncmp(cpuclass+1, "386", 3)) {
 453                             cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 454                             cachedsi.wProcessorLevel= 3;
 455                        }
 456                        if (!strncmp(cpuclass+1, "486", 3)) {
 457                             cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 458                             cachedsi.wProcessorLevel= 4;
 459                        }
 460                        if (!strncmp(cpuclass+1, "586", 3)) {
 461                             cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 462                             cachedsi.wProcessorLevel= 5;
 463                        }
 464                        if (!strncmp(cpuclass+1, "686", 3)) {
 465                             cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 466                             cachedsi.wProcessorLevel= 5;
 467                             /* this should imply MMX */
 468                             PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 469                        }
 470                   }
 471              }
 472
 473              /* it may be worth reading from /var/run/dmesg.boot for
 474                 additional information such as CX8, MMX and TSC
 475                 (however this information should be considered less
 476                  reliable than that from the sysctl calls) */
 477              if (f != NULL)
 478              {
 479                  while (fgets(model, 255, f) != NULL) {
 480                         if (sscanf(model,"cpu%d: features %x<", value, value+1) == 2) {
 481                             /* we could scan the string but it is easier
 482                                to test the bits directly */
 483                             if (value[1] & 0x1)
 484                                 PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 485                             if (value[1] & 0x10)
 486                                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
 487                             if (value[1] & 0x100)
 488                                 PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
 489                             if (value[1] & 0x800000)
 490                                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 491
 492                             break;
 493                         }
 494                  }
 495                  fclose(f);
 496              }
 497
 498         }
 499         memcpy(si,&cachedsi,sizeof(*si));
 500 #elif defined(__FreeBSD__)
 501         {
 502         unsigned int regs[4], regs2[4];
 503         int ret, len, num;
 504         if (!have_cpuid())
 505                 regs[0] = 0;                    /* No cpuid support -- skip the rest */
 506         else
 507                 do_cpuid(0x00000000, regs);     /* get standard cpuid level and vendor name */
 508         if (regs[0]>=0x00000001) {              /* Check for supported cpuid version */
 509                 do_cpuid(0x00000001, regs2);    /* get cpu features */
 510                 switch ((regs2[0] >> 8)&0xf) {  /* cpu family */
 511                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 512                         cachedsi.wProcessorLevel = 3;
 513                         break;
 514                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 515                         cachedsi.wProcessorLevel = 4;
 516                         break;
 517                 case 5:
 518                 case 6:
 519                 case 15: /* PPro/2/3/4 has same info as P1 */
 520                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 521                         cachedsi.wProcessorLevel = 5;
 522                         break;
 523                 default:
 524                         FIXME("unknown FreeBSD cpu family %d, please report! (-> setting to 386)\n", \
 525                                 (regs2[0] >> 8)&0xf);
 526                         break;
 527                 }
 528                 PF[PF_FLOATING_POINT_EMULATED]     = !(regs2[3] & 1);
 529                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = (regs2[3] & (1 << 4 )) >> 4;
 530                 PF[PF_COMPARE_EXCHANGE_DOUBLE]     = (regs2[3] & (1 << 8 )) >> 8;
 531                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE]  = (regs2[3] & (1 << 23)) >> 23;
 532                 /* Check for OS support of SSE -- Is this used, and should it be sse1 or sse2? */
 533                 /*len = sizeof(num);
 534                 ret = sysctlbyname("hw.instruction_sse", &num, &len, NULL, 0);
 535                 if (!ret)
 536                         PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = num;*/
 537
 538                 if (regs[1] == AUTH &&
 539                     regs[3] == ENTI &&
 540                     regs[2] == CAMD) {
 541                         do_cpuid(0x80000000, regs);             /* get vendor cpuid level */
 542                         if (regs[0]>=0x80000001) {
 543                                 do_cpuid(0x80000001, regs2);    /* get vendor features */
 544                                 PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] =
 545                                     (regs2[3] & (1 << 31 )) >> 31;
 546                         }
 547                 }
 548         }
 549         len = sizeof(num);
 550         ret = sysctlbyname("hw.ncpu", &num, &len, NULL, 0);
 551         if (!ret)
 552                 cachedsi.dwNumberOfProcessors = num;
 553         }
 554         memcpy(si,&cachedsi,sizeof(*si));
 555 #else
 556         FIXME("not yet supported on this system\n");
 557 #endif
 558         TRACE("<- CPU arch %d, res'd %d, pagesize %ld, minappaddr %p, maxappaddr %p,"
 559               " act.cpumask %08lx, numcpus %ld, CPU type %ld, allocgran. %ld, CPU level %d, CPU rev %d\n",
 560               si->u.s.wProcessorArchitecture, si->u.s.wReserved, si->dwPageSize,
 561               si->lpMinimumApplicationAddress, si->lpMaximumApplicationAddress,
 562               si->dwActiveProcessorMask, si->dwNumberOfProcessors, si->dwProcessorType,
 563               si->dwAllocationGranularity, si->wProcessorLevel, si->wProcessorRevision);
 564
 565         create_registry_keys( &cachedsi );
 566 }
 567
 568
 569 /***********************************************************************
 570  *                      IsProcessorFeaturePresent       [KERNEL32.@]
 571  * RETURNS:
 572  *      TRUE if processor feature present
 573  *      FALSE otherwise
 574  */
 575 BOOL WINAPI IsProcessorFeaturePresent (
 576         DWORD feature   /* [in] feature number, see PF_ defines */
 577 ) {
 578   SYSTEM_INFO si;
 579   GetSystemInfo (&si); /* To ensure the information is loaded and cached */
 580
 581   if (feature < 64)
 582     return PF[feature];
 583   else
 584     return FALSE;
 585 }