| /* |
| * What processor? |
| * |
| * Copyright 1995,1997 Morten Welinder |
| * Copyright 1997-1998 Marcus Meissner |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include "config.h" |
| #include "wine/port.h" |
| |
| #ifdef HAVE_SYS_PARAM_H |
| # include <sys/param.h> |
| #endif |
| #ifdef HAVE_SYS_SYSCTL_H |
| # include <sys/sysctl.h> |
| #endif |
| #ifdef HAVE_MACHINE_CPU_H |
| # include <machine/cpu.h> |
| #endif |
| |
| #include <ctype.h> |
| #include <string.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #ifdef HAVE_SYS_TIME_H |
| # include <sys/time.h> |
| #endif |
| |
| |
| #define NONAMELESSUNION |
| #define NONAMELESSSTRUCT |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winnt.h" |
| #include "winreg.h" |
| #include "winternl.h" |
| #include "winerror.h" |
| #include "wine/unicode.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(reg); |
| |
| #define AUTH 0x68747541 /* "Auth" */ |
| #define ENTI 0x69746e65 /* "enti" */ |
| #define CAMD 0x444d4163 /* "cAMD" */ |
| |
| /* Calls cpuid with an eax of 'ax' and returns the 16 bytes in *p |
| * We are compiled with -fPIC, so we can't clobber ebx. |
| */ |
| static inline void do_cpuid(int ax, int *p) |
| { |
| #ifdef __i386__ |
| __asm__("pushl %%ebx\n\t" |
| "cpuid\n\t" |
| "movl %%ebx, %%esi\n\t" |
| "popl %%ebx" |
| : "=a" (p[0]), "=S" (p[1]), "=c" (p[2]), "=d" (p[3]) |
| : "0" (ax)); |
| #endif |
| } |
| |
| /* From xf86info havecpuid.c 1.11 */ |
| static inline int have_cpuid(void) |
| { |
| #ifdef __i386__ |
| unsigned int f1, f2; |
| __asm__("pushfl\n\t" |
| "pushfl\n\t" |
| "popl %0\n\t" |
| "movl %0,%1\n\t" |
| "xorl %2,%0\n\t" |
| "pushl %0\n\t" |
| "popfl\n\t" |
| "pushfl\n\t" |
| "popl %0\n\t" |
| "popfl" |
| : "=&r" (f1), "=&r" (f2) |
| : "ir" (0x00200000)); |
| return ((f1^f2) & 0x00200000) != 0; |
| #else |
| return 0; |
| #endif |
| } |
| |
| static BYTE PF[64] = {0,}; |
| static ULONGLONG cpuHz = 1000000000; /* default to a 1GHz */ |
| |
| static void create_registry_keys( const SYSTEM_INFO *info ) |
| { |
| static const WCHAR SystemW[] = {'M','a','c','h','i','n','e','\\', |
| 'H','a','r','d','w','a','r','e','\\', |
| 'D','e','s','c','r','i','p','t','i','o','n','\\', |
| 'S','y','s','t','e','m',0}; |
| 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}; |
| static const WCHAR cpuW[] = {'C','e','n','t','r','a','l','P','r','o','c','e','s','s','o','r',0}; |
| static const WCHAR IdentifierW[] = {'I','d','e','n','t','i','f','i','e','r',0}; |
| static const WCHAR SysidW[] = {'A','T',' ','c','o','m','p','a','t','i','b','l','e',0}; |
| static const WCHAR mhzKeyW[] = {'~','M','H','z',0}; |
| |
| int i; |
| HKEY hkey, system_key, cpu_key; |
| OBJECT_ATTRIBUTES attr; |
| UNICODE_STRING nameW, valueW; |
| |
| attr.Length = sizeof(attr); |
| attr.RootDirectory = 0; |
| attr.ObjectName = &nameW; |
| attr.Attributes = 0; |
| attr.SecurityDescriptor = NULL; |
| attr.SecurityQualityOfService = NULL; |
| |
| RtlInitUnicodeString( &nameW, SystemW ); |
| if (NtCreateKey( &system_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) return; |
| |
| RtlInitUnicodeString( &valueW, IdentifierW ); |
| NtSetValueKey( system_key, &valueW, 0, REG_SZ, SysidW, (strlenW(SysidW)+1) * sizeof(WCHAR) ); |
| |
| attr.RootDirectory = system_key; |
| RtlInitUnicodeString( &nameW, fpuW ); |
| if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) NtClose( hkey ); |
| |
| RtlInitUnicodeString( &nameW, cpuW ); |
| if (!NtCreateKey( &cpu_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) |
| { |
| for (i = 0; i < info->dwNumberOfProcessors; i++) |
| { |
| char num[10], id[20]; |
| |
| attr.RootDirectory = cpu_key; |
| sprintf( num, "%d", i ); |
| RtlCreateUnicodeStringFromAsciiz( &nameW, num ); |
| if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) |
| { |
| WCHAR idW[20]; |
| DWORD cpuMHz = cpuHz / 1000000; |
| |
| sprintf( id, "CPU %ld", info->dwProcessorType ); |
| RtlMultiByteToUnicodeN( idW, sizeof(idW), NULL, id, strlen(id)+1 ); |
| NtSetValueKey( hkey, &valueW, 0, REG_SZ, idW, (strlenW(idW)+1)*sizeof(WCHAR) ); |
| |
| RtlInitUnicodeString( &valueW, mhzKeyW ); |
| NtSetValueKey( hkey, &valueW, 0, REG_DWORD, &cpuMHz, sizeof(DWORD) ); |
| NtClose( hkey ); |
| } |
| RtlFreeUnicodeString( &nameW ); |
| } |
| NtClose( cpu_key ); |
| } |
| NtClose( system_key ); |
| } |
| |
| /**************************************************************************** |
| * QueryPerformanceCounter (KERNEL32.@) |
| * |
| * Get the current value of the performance counter. |
| * |
| * PARAMS |
| * counter [O] Destination for the current counter reading |
| * |
| * RETURNS |
| * Success: TRUE. counter contains the current reading |
| * Failure: FALSE. |
| * |
| * SEE ALSO |
| * See QueryPerformanceFrequency. |
| */ |
| BOOL WINAPI QueryPerformanceCounter(PLARGE_INTEGER counter) |
| { |
| struct timeval tv; |
| |
| #if defined(__i386__) && defined(__GNUC__) |
| if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) { |
| /* i586 optimized version */ |
| __asm__ __volatile__ ( "rdtsc" |
| : "=a" (counter->s.LowPart), "=d" (counter->s.HighPart) ); |
| counter->QuadPart = counter->QuadPart / 1000; /* see below */ |
| return TRUE; |
| } |
| #endif |
| |
| /* fall back to generic routine (ie, for i386, i486) */ |
| gettimeofday( &tv, NULL ); |
| counter->QuadPart = (LONGLONG)tv.tv_usec + (LONGLONG)tv.tv_sec * 1000000; |
| return TRUE; |
| } |
| |
| |
| /**************************************************************************** |
| * QueryPerformanceFrequency (KERNEL32.@) |
| * |
| * Get the resolution of the performace counter. |
| * |
| * PARAMS |
| * frequency [O] Destination for the counter resolution |
| * |
| * RETURNS |
| * Success. TRUE. Frequency contains the resolution of the counter. |
| * Failure: FALSE. |
| * |
| * SEE ALSO |
| * See QueryPerformanceCounter. |
| */ |
| BOOL WINAPI QueryPerformanceFrequency(PLARGE_INTEGER frequency) |
| { |
| #if defined(__i386__) && defined(__GNUC__) |
| if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) { |
| /* The way Windows calculates this value is unclear, however simply using the CPU frequency |
| gives a value out by approximately a thousand. That can cause some applications to crash, |
| so we divide here to make our number more similar to the one Windows gives */ |
| frequency->QuadPart = cpuHz / 1000; |
| return TRUE; |
| } |
| #endif |
| frequency->s.LowPart = 1000000; |
| frequency->s.HighPart = 0; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * GetSystemInfo [KERNEL32.@] |
| * |
| * Get information about the system. |
| * |
| * RETURNS |
| * Nothing. |
| * |
| * NOTES |
| * On the first call it creates cached values, so it doesn't have to determine |
| * them repeatedly. On Linux, the "/proc/cpuinfo" special file is used. |
| * |
| * It creates a registry subhierarchy, looking like: |
| * "\HARDWARE\DESCRIPTION\System\CentralProcessor\<processornumber>\Identifier (CPU x86)". |
| * Note that there is a hierarchy for every processor installed, so this |
| * supports multiprocessor systems. This is done like Win95 does it, I think. |
| * |
| * It also creates a cached flag array for IsProcessorFeaturePresent(). |
| */ |
| VOID WINAPI GetSystemInfo( |
| LPSYSTEM_INFO si /* [out] Destination for system information, may not be NULL */) |
| { |
| static int cache = 0; |
| static SYSTEM_INFO cachedsi; |
| |
| TRACE("si=0x%p\n", si); |
| if (cache) { |
| memcpy(si,&cachedsi,sizeof(*si)); |
| return; |
| } |
| memset(PF,0,sizeof(PF)); |
| |
| /* choose sensible defaults ... |
| * FIXME: perhaps overrideable with precompiler flags? |
| */ |
| cachedsi.u.s.wProcessorArchitecture = PROCESSOR_ARCHITECTURE_INTEL; |
| cachedsi.dwPageSize = getpagesize(); |
| |
| /* FIXME: the two entries below should be computed somehow... */ |
| cachedsi.lpMinimumApplicationAddress = (void *)0x00010000; |
| cachedsi.lpMaximumApplicationAddress = (void *)0x7FFFFFFF; |
| cachedsi.dwActiveProcessorMask = 1; |
| cachedsi.dwNumberOfProcessors = 1; |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.dwAllocationGranularity = 0x10000; |
| cachedsi.wProcessorLevel = 5; /* 586 */ |
| cachedsi.wProcessorRevision = 0; |
| |
| cache = 1; /* even if there is no more info, we now have a cacheentry */ |
| memcpy(si,&cachedsi,sizeof(*si)); |
| |
| /* Hmm, reasonable processor feature defaults? */ |
| |
| #ifdef linux |
| { |
| char line[200]; |
| FILE *f = fopen ("/proc/cpuinfo", "r"); |
| |
| if (!f) |
| return; |
| while (fgets(line,200,f)!=NULL) { |
| char *s,*value; |
| |
| /* NOTE: the ':' is the only character we can rely on */ |
| if (!(value = strchr(line,':'))) |
| continue; |
| |
| /* terminate the valuename */ |
| s = value - 1; |
| while ((s >= line) && ((*s == ' ') || (*s == '\t'))) s--; |
| *(s + 1) = '\0'; |
| |
| /* and strip leading spaces from value */ |
| value += 1; |
| while (*value==' ') value++; |
| if ((s=strchr(value,'\n'))) |
| *s='\0'; |
| |
| /* 2.1 method */ |
| if (!strcasecmp(line, "cpu family")) { |
| if (isdigit (value[0])) { |
| switch (value[0] - '0') { |
| case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386; |
| cachedsi.wProcessorLevel= 3; |
| break; |
| case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486; |
| cachedsi.wProcessorLevel= 4; |
| break; |
| case 5: |
| case 6: /* PPro/2/3 has same info as P1 */ |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.wProcessorLevel= 5; |
| break; |
| case 1: /* two-figure levels */ |
| if (value[1] == '5') |
| { |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.wProcessorLevel= 5; |
| break; |
| } |
| /* fall through */ |
| default: |
| FIXME("unknown cpu family '%s', please report ! (-> setting to 386)\n", value); |
| break; |
| } |
| } |
| continue; |
| } |
| /* old 2.0 method */ |
| if (!strcasecmp(line, "cpu")) { |
| if ( isdigit (value[0]) && value[1] == '8' && |
| value[2] == '6' && value[3] == 0 |
| ) { |
| switch (value[0] - '0') { |
| case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386; |
| cachedsi.wProcessorLevel= 3; |
| break; |
| case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486; |
| cachedsi.wProcessorLevel= 4; |
| break; |
| case 5: |
| case 6: /* PPro/2/3 has same info as P1 */ |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.wProcessorLevel= 5; |
| break; |
| default: |
| FIXME("unknown Linux 2.0 cpu family '%s', please report ! (-> setting to 386)\n", value); |
| break; |
| } |
| } |
| continue; |
| } |
| if (!strcasecmp(line,"fdiv_bug")) { |
| if (!strncasecmp(value,"yes",3)) |
| PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE; |
| |
| continue; |
| } |
| if (!strcasecmp(line,"fpu")) { |
| if (!strncasecmp(value,"no",2)) |
| PF[PF_FLOATING_POINT_EMULATED] = TRUE; |
| |
| continue; |
| } |
| if (!strcasecmp(line,"processor")) { |
| /* processor number counts up... */ |
| unsigned int x; |
| |
| if (sscanf(value,"%d",&x)) |
| if (x+1>cachedsi.dwNumberOfProcessors) |
| cachedsi.dwNumberOfProcessors=x+1; |
| |
| continue; |
| } |
| if (!strcasecmp(line,"stepping")) { |
| int x; |
| |
| if (sscanf(value,"%d",&x)) |
| cachedsi.wProcessorRevision = x; |
| |
| continue; |
| } |
| if (!strcasecmp(line, "cpu MHz")) { |
| double cmz; |
| if (sscanf( value, "%lf", &cmz ) == 1) { |
| /* SYSTEMINFO doesn't have a slot for cpu speed, so store in a global */ |
| cpuHz = cmz * 1000 * 1000; |
| TRACE("CPU speed read as %lld\n", cpuHz); |
| } |
| continue; |
| } |
| if ( !strcasecmp(line,"flags") || |
| !strcasecmp(line,"features") |
| ) { |
| if (strstr(value,"cx8")) |
| PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE; |
| if (strstr(value,"mmx")) |
| PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE; |
| if (strstr(value,"tsc")) |
| PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE; |
| if (strstr(value,"3dnow")) |
| PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = TRUE; |
| /* This will also catch sse2, but we have sse itself |
| * if we have sse2, so no problem */ |
| if (strstr(value,"sse")) |
| PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = TRUE; |
| if (strstr(value,"sse2")) |
| PF[PF_XMMI64_INSTRUCTIONS_AVAILABLE] = TRUE; |
| if (strstr(value,"pae")) |
| PF[PF_PAE_ENABLED] = TRUE; |
| |
| continue; |
| } |
| } |
| fclose (f); |
| } |
| memcpy(si,&cachedsi,sizeof(*si)); |
| #elif defined (__NetBSD__) |
| { |
| int mib[2]; |
| int value[2]; |
| char model[256]; |
| char *cpuclass; |
| FILE *f = fopen ("/var/run/dmesg.boot", "r"); |
| |
| /* first deduce as much as possible from the sysctls */ |
| mib[0] = CTL_MACHDEP; |
| #ifdef CPU_FPU_PRESENT |
| mib[1] = CPU_FPU_PRESENT; |
| value[1] = sizeof(int); |
| if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0) |
| if (value) PF[PF_FLOATING_POINT_EMULATED] = FALSE; |
| else PF[PF_FLOATING_POINT_EMULATED] = TRUE; |
| #endif |
| #ifdef CPU_SSE |
| mib[1] = CPU_SSE; /* this should imply MMX */ |
| value[1] = sizeof(int); |
| if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0) |
| if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE; |
| #endif |
| #ifdef CPU_SSE2 |
| mib[1] = CPU_SSE2; /* this should imply MMX */ |
| value[1] = sizeof(int); |
| if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0) |
| if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE; |
| #endif |
| mib[0] = CTL_HW; |
| mib[1] = HW_NCPU; |
| value[1] = sizeof(int); |
| if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0) |
| if (value[0] > cachedsi.dwNumberOfProcessors) |
| cachedsi.dwNumberOfProcessors = value[0]; |
| mib[1] = HW_MODEL; |
| value[1] = 255; |
| if (sysctl(mib, 2, model, value+1, NULL, 0) >= 0) { |
| model[value[1]] = '\0'; /* just in case */ |
| cpuclass = strstr(model, "-class"); |
| if (cpuclass != NULL) { |
| while(cpuclass > model && cpuclass[0] != '(') cpuclass--; |
| if (!strncmp(cpuclass+1, "386", 3)) { |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_386; |
| cachedsi.wProcessorLevel= 3; |
| } |
| if (!strncmp(cpuclass+1, "486", 3)) { |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_486; |
| cachedsi.wProcessorLevel= 4; |
| } |
| if (!strncmp(cpuclass+1, "586", 3)) { |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.wProcessorLevel= 5; |
| } |
| if (!strncmp(cpuclass+1, "686", 3)) { |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.wProcessorLevel= 5; |
| /* this should imply MMX */ |
| PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE; |
| } |
| } |
| } |
| |
| /* it may be worth reading from /var/run/dmesg.boot for |
| additional information such as CX8, MMX and TSC |
| (however this information should be considered less |
| reliable than that from the sysctl calls) */ |
| if (f != NULL) |
| { |
| while (fgets(model, 255, f) != NULL) { |
| if (sscanf(model,"cpu%d: features %x<", value, value+1) == 2) { |
| /* we could scan the string but it is easier |
| to test the bits directly */ |
| if (value[1] & 0x1) |
| PF[PF_FLOATING_POINT_EMULATED] = TRUE; |
| if (value[1] & 0x10) |
| PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE; |
| if (value[1] & 0x100) |
| PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE; |
| if (value[1] & 0x800000) |
| PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE; |
| |
| break; |
| } |
| } |
| fclose(f); |
| } |
| |
| } |
| memcpy(si,&cachedsi,sizeof(*si)); |
| #elif defined(__FreeBSD__) |
| { |
| unsigned int regs[4], regs2[4]; |
| int ret, len, num; |
| if (!have_cpuid()) |
| regs[0] = 0; /* No cpuid support -- skip the rest */ |
| else |
| do_cpuid(0x00000000, regs); /* get standard cpuid level and vendor name */ |
| if (regs[0]>=0x00000001) { /* Check for supported cpuid version */ |
| do_cpuid(0x00000001, regs2); /* get cpu features */ |
| switch ((regs2[0] >> 8)&0xf) { /* cpu family */ |
| case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386; |
| cachedsi.wProcessorLevel = 3; |
| break; |
| case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486; |
| cachedsi.wProcessorLevel = 4; |
| break; |
| case 5: |
| case 6: |
| case 15: /* PPro/2/3/4 has same info as P1 */ |
| cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM; |
| cachedsi.wProcessorLevel = 5; |
| break; |
| default: |
| FIXME("unknown FreeBSD cpu family %d, please report! (-> setting to 386)\n", \ |
| (regs2[0] >> 8)&0xf); |
| break; |
| } |
| PF[PF_FLOATING_POINT_EMULATED] = !(regs2[3] & 1); |
| PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = (regs2[3] & (1 << 4 )) >> 4; |
| PF[PF_COMPARE_EXCHANGE_DOUBLE] = (regs2[3] & (1 << 8 )) >> 8; |
| PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = (regs2[3] & (1 << 23)) >> 23; |
| /* Check for OS support of SSE -- Is this used, and should it be sse1 or sse2? */ |
| /*len = sizeof(num); |
| ret = sysctlbyname("hw.instruction_sse", &num, &len, NULL, 0); |
| if (!ret) |
| PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = num;*/ |
| |
| if (regs[1] == AUTH && |
| regs[3] == ENTI && |
| regs[2] == CAMD) { |
| do_cpuid(0x80000000, regs); /* get vendor cpuid level */ |
| if (regs[0]>=0x80000001) { |
| do_cpuid(0x80000001, regs2); /* get vendor features */ |
| PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = |
| (regs2[3] & (1 << 31 )) >> 31; |
| } |
| } |
| } |
| len = sizeof(num); |
| ret = sysctlbyname("hw.ncpu", &num, &len, NULL, 0); |
| if (!ret) |
| cachedsi.dwNumberOfProcessors = num; |
| } |
| memcpy(si,&cachedsi,sizeof(*si)); |
| #else |
| FIXME("not yet supported on this system\n"); |
| #endif |
| TRACE("<- CPU arch %d, res'd %d, pagesize %ld, minappaddr %p, maxappaddr %p," |
| " act.cpumask %08lx, numcpus %ld, CPU type %ld, allocgran. %ld, CPU level %d, CPU rev %d\n", |
| si->u.s.wProcessorArchitecture, si->u.s.wReserved, si->dwPageSize, |
| si->lpMinimumApplicationAddress, si->lpMaximumApplicationAddress, |
| si->dwActiveProcessorMask, si->dwNumberOfProcessors, si->dwProcessorType, |
| si->dwAllocationGranularity, si->wProcessorLevel, si->wProcessorRevision); |
| |
| create_registry_keys( &cachedsi ); |
| } |
| |
| |
| /*********************************************************************** |
| * IsProcessorFeaturePresent [KERNEL32.@] |
| * |
| * Determine if the cpu supports a given feature. |
| * |
| * RETURNS |
| * TRUE, If the processor supports feature, |
| * FALSE otherwise. |
| */ |
| BOOL WINAPI IsProcessorFeaturePresent ( |
| DWORD feature /* [in] Feature number, (PF_ constants from "winnt.h") */) |
| { |
| SYSTEM_INFO si; |
| GetSystemInfo (&si); /* To ensure the information is loaded and cached */ |
| |
| if (feature < 64) |
| return PF[feature]; |
| else |
| return FALSE; |
| } |
