misc/cpu.c - wine - Git at Google

 /*
  * 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"

 #include <ctype.h>
 #include <string.h>
 #include <stdio.h>

 #include "winbase.h"
 #include "winnt.h"
 #include "winternl.h"
 #include "winerror.h"
 #include "wine/unicode.h"
 #include "wine/debug.h"

 WINE_DEFAULT_DEBUG_CHANNEL(reg);

 static BYTE PF[64] = {0,};

 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};

     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];

                 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) );
                 NtClose( hkey );
             }
             RtlFreeUnicodeString( &nameW );
         }
         NtClose( cpu_key );
     }
     NtClose( system_key );
 }


 /***********************************************************************
  * 			GetSystemInfo            	[KERNEL32.@]
  *
  * Gets the current system information.
  *
  * 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().
  *
  * No NULL ptr check for LPSYSTEM_INFO in Win9x.
  *
  * RETURNS
  *	nothing, really
  */
 VOID WINAPI GetSystemInfo(
 	LPSYSTEM_INFO si	/* [out] system information */
 ) {
 	static int cache = 0;
 	static SYSTEM_INFO cachedsi;

 	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 */
 		*value++ = '\0';
 		/* skip any leading spaces */
 		while (*value==' ') value++;
 		if ((s=strchr(value,'\n')))
 			*s='\0';

 		/* 2.1 method */
 		if (!strncasecmp(line, "cpu family",strlen("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 (!strncasecmp(line, "cpu",strlen("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 (!strncasecmp(line,"fdiv_bug",strlen("fdiv_bug"))) {
 			if (!strncasecmp(value,"yes",3))
 				PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE;

 			continue;
 		}
 		if (!strncasecmp(line,"fpu",strlen("fpu"))) {
 			if (!strncasecmp(value,"no",2))
 				PF[PF_FLOATING_POINT_EMULATED] = TRUE;

 			continue;
 		}
 		if (!strncasecmp(line,"processor",strlen("processor"))) {
 			/* processor number counts up... */
 			unsigned int x;

 			if (sscanf(value,"%d",&x))
 				if (x+1>cachedsi.dwNumberOfProcessors)
 					cachedsi.dwNumberOfProcessors=x+1;
 		}
 		if (!strncasecmp(line,"stepping",strlen("stepping"))) {
 			int	x;

 			if (sscanf(value,"%d",&x))
 				cachedsi.wProcessorRevision = x;
 		}
 		if (	!strncasecmp(line,"flags",strlen("flags"))	||
 			!strncasecmp(line,"features",strlen("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;

 		}
 	}
 	fclose (f);
 	}
 	memcpy(si,&cachedsi,sizeof(*si));
 #else  /* linux */
 	FIXME("not yet supported on this system\n");
 #endif  /* !linux */
         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.@]
  * RETURNS:
  *	TRUE if processor feature present
  *	FALSE otherwise
  */
 BOOL WINAPI IsProcessorFeaturePresent (
 	DWORD feature	/* [in] feature number, see PF_ defines */
 ) {
   SYSTEM_INFO si;
   GetSystemInfo (&si); /* To ensure the information is loaded and cached */

   if (feature < 64)
     return PF[feature];
   else
     return FALSE;
 }
	/*
	* 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"

	#include <ctype.h>
	#include <string.h>
	#include <stdio.h>

	#include "winbase.h"
	#include "winnt.h"
	#include "winternl.h"
	#include "winerror.h"
	#include "wine/unicode.h"
	#include "wine/debug.h"

	WINE_DEFAULT_DEBUG_CHANNEL(reg);

	static BYTE PF[64] = {0,};

	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};

	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];

	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) );
	NtClose( hkey );
	}
	RtlFreeUnicodeString( &nameW );
	}
	NtClose( cpu_key );
	}
	NtClose( system_key );
	}


	/***********************************************************************
	* GetSystemInfo [KERNEL32.@]
	*
	* Gets the current system information.
	*
	* 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().
	*
	* No NULL ptr check for LPSYSTEM_INFO in Win9x.
	*
	* RETURNS
	* nothing, really
	*/
	VOID WINAPI GetSystemInfo(
	LPSYSTEM_INFO si /* [out] system information */
	) {
	static int cache = 0;
	static SYSTEM_INFO cachedsi;

	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 */
	*value++ = '\0';
	/* skip any leading spaces */
	while (*value==' ') value++;
	if ((s=strchr(value,'\n')))
	*s='\0';

	/* 2.1 method */
	if (!strncasecmp(line, "cpu family",strlen("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 (!strncasecmp(line, "cpu",strlen("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 (!strncasecmp(line,"fdiv_bug",strlen("fdiv_bug"))) {
	if (!strncasecmp(value,"yes",3))
	PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE;

	continue;
	}
	if (!strncasecmp(line,"fpu",strlen("fpu"))) {
	if (!strncasecmp(value,"no",2))
	PF[PF_FLOATING_POINT_EMULATED] = TRUE;

	continue;
	}
	if (!strncasecmp(line,"processor",strlen("processor"))) {
	/* processor number counts up... */
	unsigned int x;

	if (sscanf(value,"%d",&x))
	if (x+1>cachedsi.dwNumberOfProcessors)
	cachedsi.dwNumberOfProcessors=x+1;
	}
	if (!strncasecmp(line,"stepping",strlen("stepping"))) {
	int x;

	if (sscanf(value,"%d",&x))
	cachedsi.wProcessorRevision = x;
	}
	if ( !strncasecmp(line,"flags",strlen("flags")) \|\|
	!strncasecmp(line,"features",strlen("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;

	}
	}
	fclose (f);
	}
	memcpy(si,&cachedsi,sizeof(*si));
	#else /* linux */
	FIXME("not yet supported on this system\n");
	#endif /* !linux */
	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.@]
	* RETURNS:
	* TRUE if processor feature present
	* FALSE otherwise
	*/
	BOOL WINAPI IsProcessorFeaturePresent (
	DWORD feature /* [in] feature number, see PF_ defines */
	) {
	SYSTEM_INFO si;
	GetSystemInfo (&si); /* To ensure the information is loaded and cached */

	if (feature < 64)
	return PF[feature];
	else
	return FALSE;
	}