git.oblomov.eu Git - wine/blob - dlls/kernel/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  * Get the current value of the performance counter.
 171  *
 172  * PARAMS
 173  *  counter [O] Destination for the current counter reading
 174  *
 175  * RETURNS
 176  *  Success: TRUE. counter contains the current reading
 177  *  Failure: FALSE.
 178  *
 179  * SEE ALSO
 180  *  See QueryPerformanceFrequency.
 181  */
 182 BOOL WINAPI QueryPerformanceCounter(PLARGE_INTEGER counter)
 183 {
 184     struct timeval tv;
 185
 186 #if defined(__i386__) && defined(__GNUC__)
 187     if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
 188         /* i586 optimized version */
 189         __asm__ __volatile__ ( "rdtsc"
 190                                : "=a" (counter->s.LowPart), "=d" (counter->s.HighPart) );
 191         counter->QuadPart = counter->QuadPart / 1000; /* see below */
 192         return TRUE;
 193     }
 194 #endif
 195
 196     /* fall back to generic routine (ie, for i386, i486) */
 197     gettimeofday( &tv, NULL );
 198     counter->QuadPart = (LONGLONG)tv.tv_usec + (LONGLONG)tv.tv_sec * 1000000;
 199     return TRUE;
 200 }
 201
 202
 203 /****************************************************************************
 204  *              QueryPerformanceFrequency (KERNEL32.@)
 205  *
 206  * Get the resolution of the performace counter.
 207  *
 208  * PARAMS
 209  *  frequency [O] Destination for the counter resolution
 210  *
 211  * RETURNS
 212  *  Success. TRUE. Frequency contains the resolution of the counter.
 213  *  Failure: FALSE.
 214  *
 215  * SEE ALSO
 216  *  See QueryPerformanceCounter.
 217  */
 218 BOOL WINAPI QueryPerformanceFrequency(PLARGE_INTEGER frequency)
 219 {
 220 #if defined(__i386__) && defined(__GNUC__)
 221     if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
 222         /* The way Windows calculates this value is unclear, however simply using the CPU frequency
 223            gives a value out by approximately a thousand. That can cause some applications to crash,
 224            so we divide here to make our number more similar to the one Windows gives  */
 225         frequency->QuadPart = cpuHz / 1000;
 226         return TRUE;
 227     }
 228 #endif
 229     frequency->s.LowPart  = 1000000;
 230     frequency->s.HighPart = 0;
 231     return TRUE;
 232 }
 233
 234
 235 /***********************************************************************
 236  *                      GetSystemInfo                   [KERNEL32.@]
 237  *
 238  * Get information about the system.
 239  *
 240  * RETURNS
 241  *  Nothing.
 242  *
 243  * NOTES
 244  * On the first call it creates cached values, so it doesn't have to determine
 245  * them repeatedly. On Linux, the "/proc/cpuinfo" special file is used.
 246  *
 247  * It creates a registry subhierarchy, looking like:
 248  * "\HARDWARE\DESCRIPTION\System\CentralProcessor\<processornumber>\Identifier (CPU x86)".
 249  * Note that there is a hierarchy for every processor installed, so this
 250  * supports multiprocessor systems. This is done like Win95 does it, I think.
 251  *
 252  * It also creates a cached flag array for IsProcessorFeaturePresent().
 253  */
 254 VOID WINAPI GetSystemInfo(
 255         LPSYSTEM_INFO si        /* [out] Destination for system information, may not be NULL */)
 256 {
 257         static int cache = 0;
 258         static SYSTEM_INFO cachedsi;
 259
 260         TRACE("si=0x%p\n", si);
 261         if (cache) {
 262                 memcpy(si,&cachedsi,sizeof(*si));
 263                 return;
 264         }
 265         memset(PF,0,sizeof(PF));
 266
 267         /* choose sensible defaults ...
 268          * FIXME: perhaps overrideable with precompiler flags?
 269          */
 270         cachedsi.u.s.wProcessorArchitecture     = PROCESSOR_ARCHITECTURE_INTEL;
 271         cachedsi.dwPageSize                     = getpagesize();
 272
 273         /* FIXME: the two entries below should be computed somehow... */
 274         cachedsi.lpMinimumApplicationAddress    = (void *)0x00010000;
 275         cachedsi.lpMaximumApplicationAddress    = (void *)0x7FFFFFFF;
 276         cachedsi.dwActiveProcessorMask          = 1;
 277         cachedsi.dwNumberOfProcessors           = 1;
 278         cachedsi.dwProcessorType                = PROCESSOR_INTEL_PENTIUM;
 279         cachedsi.dwAllocationGranularity        = 0x10000;
 280         cachedsi.wProcessorLevel                = 5; /* 586 */
 281         cachedsi.wProcessorRevision             = 0;
 282
 283         cache = 1; /* even if there is no more info, we now have a cacheentry */
 284         memcpy(si,&cachedsi,sizeof(*si));
 285
 286         /* Hmm, reasonable processor feature defaults? */
 287
 288 #ifdef linux
 289         {
 290         char line[200];
 291         FILE *f = fopen ("/proc/cpuinfo", "r");
 292
 293         if (!f)
 294                 return;
 295         while (fgets(line,200,f)!=NULL) {
 296                 char    *s,*value;
 297
 298                 /* NOTE: the ':' is the only character we can rely on */
 299                 if (!(value = strchr(line,':')))
 300                         continue;
 301
 302                 /* terminate the valuename */
 303                 s = value - 1;
 304                 while ((s >= line) && ((*s == ' ') || (*s == '\t'))) s--;
 305                 *(s + 1) = '\0';
 306
 307                 /* and strip leading spaces from value */
 308                 value += 1;
 309                 while (*value==' ') value++;
 310                 if ((s=strchr(value,'\n')))
 311                         *s='\0';
 312
 313                 /* 2.1 method */
 314                 if (!strcasecmp(line, "cpu family")) {
 315                         if (isdigit (value[0])) {
 316                                 switch (value[0] - '0') {
 317                                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 318                                         cachedsi.wProcessorLevel= 3;
 319                                         break;
 320                                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 321                                         cachedsi.wProcessorLevel= 4;
 322                                         break;
 323                                 case 5:
 324                                 case 6: /* PPro/2/3 has same info as P1 */
 325                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 326                                         cachedsi.wProcessorLevel= 5;
 327                                         break;
 328                                 case 1: /* two-figure levels */
 329                                     if (value[1] == '5')
 330                                     {
 331                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 332                                         cachedsi.wProcessorLevel= 5;
 333                                         break;
 334                                     }
 335                                     /* fall through */
 336                                 default:
 337                                         FIXME("unknown cpu family '%s', please report ! (-> setting to 386)\n", value);
 338                                         break;
 339                                 }
 340                         }
 341                         continue;
 342                 }
 343                 /* old 2.0 method */
 344                 if (!strcasecmp(line, "cpu")) {
 345                         if (    isdigit (value[0]) && value[1] == '8' &&
 346                                 value[2] == '6' && value[3] == 0
 347                         ) {
 348                                 switch (value[0] - '0') {
 349                                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 350                                         cachedsi.wProcessorLevel= 3;
 351                                         break;
 352                                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 353                                         cachedsi.wProcessorLevel= 4;
 354                                         break;
 355                                 case 5:
 356                                 case 6: /* PPro/2/3 has same info as P1 */
 357                                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 358                                         cachedsi.wProcessorLevel= 5;
 359                                         break;
 360                                 default:
 361                                         FIXME("unknown Linux 2.0 cpu family '%s', please report ! (-> setting to 386)\n", value);
 362                                         break;
 363                                 }
 364                         }
 365                         continue;
 366                 }
 367                 if (!strcasecmp(line,"fdiv_bug")) {
 368                         if (!strncasecmp(value,"yes",3))
 369                                 PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE;
 370
 371                         continue;
 372                 }
 373                 if (!strcasecmp(line,"fpu")) {
 374                         if (!strncasecmp(value,"no",2))
 375                                 PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 376
 377                         continue;
 378                 }
 379                 if (!strcasecmp(line,"processor")) {
 380                         /* processor number counts up... */
 381                         unsigned int x;
 382
 383                         if (sscanf(value,"%d",&x))
 384                                 if (x+1>cachedsi.dwNumberOfProcessors)
 385                                         cachedsi.dwNumberOfProcessors=x+1;
 386
 387                         continue;
 388                 }
 389                 if (!strcasecmp(line,"stepping")) {
 390                         int     x;
 391
 392                         if (sscanf(value,"%d",&x))
 393                                 cachedsi.wProcessorRevision = x;
 394
 395                         continue;
 396                 }
 397                 if (!strcasecmp(line, "cpu MHz")) {
 398                         double cmz;
 399                         if (sscanf( value, "%lf", &cmz ) == 1) {
 400                                 /* SYSTEMINFO doesn't have a slot for cpu speed, so store in a global */
 401                                 cpuHz = cmz * 1000 * 1000;
 402                                 TRACE("CPU speed read as %lld\n", cpuHz);
 403                         }
 404                         continue;
 405                 }
 406                 if (    !strcasecmp(line,"flags")       ||
 407                         !strcasecmp(line,"features")
 408                 ) {
 409                         if (strstr(value,"cx8"))
 410                                 PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
 411                         if (strstr(value,"mmx"))
 412                                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 413                         if (strstr(value,"tsc"))
 414                                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
 415                         if (strstr(value,"3dnow"))
 416                                 PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = TRUE;
 417                         /* This will also catch sse2, but we have sse itself
 418                          * if we have sse2, so no problem */
 419                         if (strstr(value,"sse"))
 420                                 PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = TRUE;
 421                         if (strstr(value,"sse2"))
 422                                 PF[PF_XMMI64_INSTRUCTIONS_AVAILABLE] = TRUE;
 423                         if (strstr(value,"pae"))
 424                                 PF[PF_PAE_ENABLED] = TRUE;
 425
 426                         continue;
 427                 }
 428         }
 429         fclose (f);
 430         }
 431         memcpy(si,&cachedsi,sizeof(*si));
 432 #elif defined (__NetBSD__)
 433         {
 434              int mib[2];
 435              int value[2];
 436              char model[256];
 437              char *cpuclass;
 438              FILE *f = fopen ("/var/run/dmesg.boot", "r");
 439
 440              /* first deduce as much as possible from the sysctls */
 441              mib[0] = CTL_MACHDEP;
 442 #ifdef CPU_FPU_PRESENT
 443              mib[1] = CPU_FPU_PRESENT;
 444              value[1] = sizeof(int);
 445              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 446                  if (value) PF[PF_FLOATING_POINT_EMULATED] = FALSE;
 447                  else       PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 448 #endif
 449 #ifdef CPU_SSE
 450              mib[1] = CPU_SSE;   /* this should imply MMX */
 451              value[1] = sizeof(int);
 452              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 453                  if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 454 #endif
 455 #ifdef CPU_SSE2
 456              mib[1] = CPU_SSE2;  /* this should imply MMX */
 457              value[1] = sizeof(int);
 458              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 459                  if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 460 #endif
 461              mib[0] = CTL_HW;
 462              mib[1] = HW_NCPU;
 463              value[1] = sizeof(int);
 464              if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
 465                  if (value[0] > cachedsi.dwNumberOfProcessors)
 466                     cachedsi.dwNumberOfProcessors = value[0];
 467              mib[1] = HW_MODEL;
 468              value[1] = 255;
 469              if (sysctl(mib, 2, model, value+1, NULL, 0) >= 0) {
 470                   model[value[1]] = '\0'; /* just in case */
 471                   cpuclass = strstr(model, "-class");
 472                   if (cpuclass != NULL) {
 473                        while(cpuclass > model && cpuclass[0] != '(') cpuclass--;
 474                        if (!strncmp(cpuclass+1, "386", 3)) {
 475                             cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 476                             cachedsi.wProcessorLevel= 3;
 477                        }
 478                        if (!strncmp(cpuclass+1, "486", 3)) {
 479                             cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 480                             cachedsi.wProcessorLevel= 4;
 481                        }
 482                        if (!strncmp(cpuclass+1, "586", 3)) {
 483                             cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 484                             cachedsi.wProcessorLevel= 5;
 485                        }
 486                        if (!strncmp(cpuclass+1, "686", 3)) {
 487                             cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 488                             cachedsi.wProcessorLevel= 5;
 489                             /* this should imply MMX */
 490                             PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 491                        }
 492                   }
 493              }
 494
 495              /* it may be worth reading from /var/run/dmesg.boot for
 496                 additional information such as CX8, MMX and TSC
 497                 (however this information should be considered less
 498                  reliable than that from the sysctl calls) */
 499              if (f != NULL)
 500              {
 501                  while (fgets(model, 255, f) != NULL) {
 502                         if (sscanf(model,"cpu%d: features %x<", value, value+1) == 2) {
 503                             /* we could scan the string but it is easier
 504                                to test the bits directly */
 505                             if (value[1] & 0x1)
 506                                 PF[PF_FLOATING_POINT_EMULATED] = TRUE;
 507                             if (value[1] & 0x10)
 508                                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
 509                             if (value[1] & 0x100)
 510                                 PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
 511                             if (value[1] & 0x800000)
 512                                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
 513
 514                             break;
 515                         }
 516                  }
 517                  fclose(f);
 518              }
 519
 520         }
 521         memcpy(si,&cachedsi,sizeof(*si));
 522 #elif defined(__FreeBSD__)
 523         {
 524         unsigned int regs[4], regs2[4];
 525         int ret, len, num;
 526         if (!have_cpuid())
 527                 regs[0] = 0;                    /* No cpuid support -- skip the rest */
 528         else
 529                 do_cpuid(0x00000000, regs);     /* get standard cpuid level and vendor name */
 530         if (regs[0]>=0x00000001) {              /* Check for supported cpuid version */
 531                 do_cpuid(0x00000001, regs2);    /* get cpu features */
 532                 switch ((regs2[0] >> 8)&0xf) {  /* cpu family */
 533                 case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
 534                         cachedsi.wProcessorLevel = 3;
 535                         break;
 536                 case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
 537                         cachedsi.wProcessorLevel = 4;
 538                         break;
 539                 case 5:
 540                 case 6:
 541                 case 15: /* PPro/2/3/4 has same info as P1 */
 542                         cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
 543                         cachedsi.wProcessorLevel = 5;
 544                         break;
 545                 default:
 546                         FIXME("unknown FreeBSD cpu family %d, please report! (-> setting to 386)\n", \
 547                                 (regs2[0] >> 8)&0xf);
 548                         break;
 549                 }
 550                 PF[PF_FLOATING_POINT_EMULATED]     = !(regs2[3] & 1);
 551                 PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = (regs2[3] & (1 << 4 )) >> 4;
 552                 PF[PF_COMPARE_EXCHANGE_DOUBLE]     = (regs2[3] & (1 << 8 )) >> 8;
 553                 PF[PF_MMX_INSTRUCTIONS_AVAILABLE]  = (regs2[3] & (1 << 23)) >> 23;
 554                 /* Check for OS support of SSE -- Is this used, and should it be sse1 or sse2? */
 555                 /*len = sizeof(num);
 556                 ret = sysctlbyname("hw.instruction_sse", &num, &len, NULL, 0);
 557                 if (!ret)
 558                         PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = num;*/
 559
 560                 if (regs[1] == AUTH &&
 561                     regs[3] == ENTI &&
 562                     regs[2] == CAMD) {
 563                         do_cpuid(0x80000000, regs);             /* get vendor cpuid level */
 564                         if (regs[0]>=0x80000001) {
 565                                 do_cpuid(0x80000001, regs2);    /* get vendor features */
 566                                 PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] =
 567                                     (regs2[3] & (1 << 31 )) >> 31;
 568                         }
 569                 }
 570         }
 571         len = sizeof(num);
 572         ret = sysctlbyname("hw.ncpu", &num, &len, NULL, 0);
 573         if (!ret)
 574                 cachedsi.dwNumberOfProcessors = num;
 575         }
 576         memcpy(si,&cachedsi,sizeof(*si));
 577 #else
 578         FIXME("not yet supported on this system\n");
 579 #endif
 580         TRACE("<- CPU arch %d, res'd %d, pagesize %ld, minappaddr %p, maxappaddr %p,"
 581               " act.cpumask %08lx, numcpus %ld, CPU type %ld, allocgran. %ld, CPU level %d, CPU rev %d\n",
 582               si->u.s.wProcessorArchitecture, si->u.s.wReserved, si->dwPageSize,
 583               si->lpMinimumApplicationAddress, si->lpMaximumApplicationAddress,
 584               si->dwActiveProcessorMask, si->dwNumberOfProcessors, si->dwProcessorType,
 585               si->dwAllocationGranularity, si->wProcessorLevel, si->wProcessorRevision);
 586
 587         create_registry_keys( &cachedsi );
 588 }
 589
 590
 591 /***********************************************************************
 592  *                      IsProcessorFeaturePresent       [KERNEL32.@]
 593  *
 594  * Determine if the cpu supports a given feature.
 595  *
 596  * RETURNS
 597  *  TRUE, If the processor supports feature,
 598  *  FALSE otherwise.
 599  */
 600 BOOL WINAPI IsProcessorFeaturePresent (
 601         DWORD feature   /* [in] Feature number, (PF_ constants from "winnt.h") */)
 602 {
 603   SYSTEM_INFO si;
 604   GetSystemInfo (&si); /* To ensure the information is loaded and cached */
 605
 606   if (feature < 64)
 607     return PF[feature];
 608   else
 609     return FALSE;
 610 }