269 lines
7.9 KiB
C
269 lines
7.9 KiB
C
/*
|
|
* 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 "winreg.h"
|
|
#include "winnt.h"
|
|
#include "winerror.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(reg);
|
|
|
|
static BYTE PF[64] = {0,};
|
|
|
|
/***********************************************************************
|
|
* 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;
|
|
HKEY xhkey=0,hkey;
|
|
|
|
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_386;
|
|
cachedsi.dwAllocationGranularity = 0x10000;
|
|
cachedsi.wProcessorLevel = 3; /* 386 */
|
|
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? */
|
|
|
|
/* Create these registry keys for all systems
|
|
* FPU entry is often empty on Windows, so we don't care either */
|
|
if ( (RegCreateKeyA(HKEY_LOCAL_MACHINE,"HARDWARE\\DESCRIPTION\\System\\FloatingPointProcessor",&hkey)!=ERROR_SUCCESS)
|
|
|| (RegCreateKeyA(HKEY_LOCAL_MACHINE,"HARDWARE\\DESCRIPTION\\System\\CentralProcessor",&hkey)!=ERROR_SUCCESS) )
|
|
{
|
|
WARN("Unable to write FPU/CPU info to registry\n");
|
|
}
|
|
|
|
#ifdef linux
|
|
{
|
|
char buf[20];
|
|
char line[200];
|
|
FILE *f = fopen ("/proc/cpuinfo", "r");
|
|
|
|
if (!f)
|
|
return;
|
|
xhkey = 0;
|
|
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;
|
|
}
|
|
}
|
|
/* set the CPU type of the current processor */
|
|
sprintf(buf,"CPU %ld",cachedsi.dwProcessorType);
|
|
if (xhkey)
|
|
RegSetValueExA(xhkey,"Identifier",0,REG_SZ,buf,strlen(buf));
|
|
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;
|
|
}
|
|
}
|
|
/* set the CPU type of the current processor
|
|
* FIXME: someone reported P4 as being set to
|
|
* " Intel(R) Pentium(R) 4 CPU 1500MHz"
|
|
* Do we need to do the same ?
|
|
* */
|
|
sprintf(buf,"CPU %ld",cachedsi.dwProcessorType);
|
|
if (xhkey)
|
|
RegSetValueExA(xhkey,"Identifier",0,REG_SZ,buf,strlen(buf));
|
|
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;
|
|
|
|
/* Create a new processor subkey on a multiprocessor
|
|
* system
|
|
*/
|
|
sprintf(buf,"%d",x);
|
|
if (xhkey)
|
|
RegCloseKey(xhkey);
|
|
RegCreateKeyA(hkey,buf,&xhkey);
|
|
}
|
|
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: how do we do this on other systems? */
|
|
|
|
RegCreateKeyA(hkey,"0",&xhkey);
|
|
RegSetValueExA(xhkey,"Identifier",0,REG_SZ,"CPU 386",strlen("CPU 386"));
|
|
#endif /* !linux */
|
|
if (xhkey)
|
|
RegCloseKey(xhkey);
|
|
if (hkey)
|
|
RegCloseKey(hkey);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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;
|
|
}
|