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585 lines
19 KiB
C
585 lines
19 KiB
C
/*
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* What processor?
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*
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* Copyright 1995,1997 Morten Welinder
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* Copyright 1997-1998 Marcus Meissner
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_SYSCTL_H
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# include <sys/sysctl.h>
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#endif
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#ifdef HAVE_MACHINE_CPU_H
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# include <machine/cpu.h>
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#endif
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#include <ctype.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "windef.h"
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#include "winbase.h"
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#include "winnt.h"
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#include "winreg.h"
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#include "winternl.h"
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#include "winerror.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(reg);
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#define AUTH 0x68747541 /* "Auth" */
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#define ENTI 0x69746e65 /* "enti" */
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#define CAMD 0x444d4163 /* "cAMD" */
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/* Calls cpuid with an eax of 'ax' and returns the 16 bytes in *p
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* We are compiled with -fPIC, so we can't clobber ebx.
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*/
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static inline void do_cpuid(int ax, int *p)
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{
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#ifdef __i386__
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__asm__("pushl %%ebx\n\t"
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"cpuid\n\t"
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"movl %%ebx, %%esi\n\t"
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"popl %%ebx"
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: "=a" (p[0]), "=S" (p[1]), "=c" (p[2]), "=d" (p[3])
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: "0" (ax));
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#endif
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}
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/* From xf86info havecpuid.c 1.11 */
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static inline int have_cpuid(void)
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{
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#ifdef __i386__
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unsigned int f1, f2;
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__asm__("pushfl\n\t"
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"pushfl\n\t"
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"popl %0\n\t"
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"movl %0,%1\n\t"
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"xorl %2,%0\n\t"
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"pushl %0\n\t"
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"popfl\n\t"
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"pushfl\n\t"
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"popl %0\n\t"
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"popfl"
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: "=&r" (f1), "=&r" (f2)
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: "ir" (0x00200000));
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return ((f1^f2) & 0x00200000) != 0;
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#else
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return 0;
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#endif
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}
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static BYTE PF[64] = {0,};
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static ULONGLONG cpuHz = 1000000000; /* default to a 1GHz */
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static void create_registry_keys( const SYSTEM_INFO *info )
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{
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static const WCHAR SystemW[] = {'M','a','c','h','i','n','e','\\',
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'H','a','r','d','w','a','r','e','\\',
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'D','e','s','c','r','i','p','t','i','o','n','\\',
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'S','y','s','t','e','m',0};
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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};
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static const WCHAR cpuW[] = {'C','e','n','t','r','a','l','P','r','o','c','e','s','s','o','r',0};
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static const WCHAR IdentifierW[] = {'I','d','e','n','t','i','f','i','e','r',0};
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static const WCHAR SysidW[] = {'A','T',' ','c','o','m','p','a','t','i','b','l','e',0};
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static const WCHAR mhzKeyW[] = {'~','M','H','z',0};
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int i;
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HKEY hkey, system_key, cpu_key;
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OBJECT_ATTRIBUTES attr;
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UNICODE_STRING nameW, valueW;
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attr.Length = sizeof(attr);
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attr.RootDirectory = 0;
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attr.ObjectName = &nameW;
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attr.Attributes = 0;
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attr.SecurityDescriptor = NULL;
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attr.SecurityQualityOfService = NULL;
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RtlInitUnicodeString( &nameW, SystemW );
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if (NtCreateKey( &system_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) return;
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RtlInitUnicodeString( &valueW, IdentifierW );
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NtSetValueKey( system_key, &valueW, 0, REG_SZ, SysidW, (strlenW(SysidW)+1) * sizeof(WCHAR) );
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attr.RootDirectory = system_key;
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RtlInitUnicodeString( &nameW, fpuW );
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if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) NtClose( hkey );
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RtlInitUnicodeString( &nameW, cpuW );
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if (!NtCreateKey( &cpu_key, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ))
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{
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for (i = 0; i < info->dwNumberOfProcessors; i++)
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{
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char num[10], id[20];
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attr.RootDirectory = cpu_key;
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sprintf( num, "%d", i );
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RtlCreateUnicodeStringFromAsciiz( &nameW, num );
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if (!NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ))
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{
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WCHAR idW[20];
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DWORD cpuMHz = cpuHz / 1000000;
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sprintf( id, "CPU %ld", info->dwProcessorType );
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RtlMultiByteToUnicodeN( idW, sizeof(idW), NULL, id, strlen(id)+1 );
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NtSetValueKey( hkey, &valueW, 0, REG_SZ, idW, (strlenW(idW)+1)*sizeof(WCHAR) );
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RtlInitUnicodeString( &valueW, mhzKeyW );
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NtSetValueKey( hkey, &valueW, 0, REG_DWORD, &cpuMHz, sizeof(DWORD) );
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NtClose( hkey );
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}
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RtlFreeUnicodeString( &nameW );
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}
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NtClose( cpu_key );
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}
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NtClose( system_key );
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}
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/****************************************************************************
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* QueryPerformanceCounter (KERNEL32.@)
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*/
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BOOL WINAPI QueryPerformanceCounter(PLARGE_INTEGER counter)
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{
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struct timeval tv;
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#if defined(__i386__) && defined(__GNUC__)
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if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
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/* i586 optimized version */
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__asm__ __volatile__ ( "rdtsc"
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: "=a" (counter->s.LowPart), "=d" (counter->s.HighPart) );
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counter->QuadPart = counter->QuadPart / 1000; /* see below */
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return TRUE;
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}
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#endif
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/* fall back to generic routine (ie, for i386, i486) */
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gettimeofday( &tv, NULL );
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counter->QuadPart = (LONGLONG)tv.tv_usec + (LONGLONG)tv.tv_sec * 1000000;
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return TRUE;
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}
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/****************************************************************************
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* QueryPerformanceFrequency (KERNEL32.@)
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*/
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BOOL WINAPI QueryPerformanceFrequency(PLARGE_INTEGER frequency)
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{
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#if defined(__i386__) && defined(__GNUC__)
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if (IsProcessorFeaturePresent( PF_RDTSC_INSTRUCTION_AVAILABLE )) {
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/* The way Windows calculates this value is unclear, however simply using the CPU frequency
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gives a value out by approximately a thousand. That can cause some applications to crash,
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so we divide here to make our number more similar to the one Windows gives */
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frequency->QuadPart = cpuHz / 1000;
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return TRUE;
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}
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#endif
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frequency->s.LowPart = 1000000;
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frequency->s.HighPart = 0;
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return TRUE;
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}
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/***********************************************************************
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* GetSystemInfo [KERNEL32.@]
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*
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* Gets the current system information.
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*
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* On the first call it creates cached values, so it doesn't have to determine
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* them repeatedly. On Linux, the /proc/cpuinfo special file is used.
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*
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* It creates a registry subhierarchy, looking like:
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* \HARDWARE\DESCRIPTION\System\CentralProcessor\<processornumber>\
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* Identifier (CPU x86)
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* Note that there is a hierarchy for every processor installed, so this
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* supports multiprocessor systems. This is done like Win95 does it, I think.
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*
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* It also creates a cached flag array for IsProcessorFeaturePresent().
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*
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* No NULL ptr check for LPSYSTEM_INFO in Win9x.
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*
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* RETURNS
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* nothing, really
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*/
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VOID WINAPI GetSystemInfo(
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LPSYSTEM_INFO si /* [out] system information */
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) {
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static int cache = 0;
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static SYSTEM_INFO cachedsi;
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TRACE("si=0x%p\n", si);
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if (cache) {
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memcpy(si,&cachedsi,sizeof(*si));
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return;
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}
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memset(PF,0,sizeof(PF));
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/* choose sensible defaults ...
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* FIXME: perhaps overrideable with precompiler flags?
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*/
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cachedsi.u.s.wProcessorArchitecture = PROCESSOR_ARCHITECTURE_INTEL;
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cachedsi.dwPageSize = getpagesize();
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/* FIXME: the two entries below should be computed somehow... */
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cachedsi.lpMinimumApplicationAddress = (void *)0x00010000;
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cachedsi.lpMaximumApplicationAddress = (void *)0x7FFFFFFF;
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cachedsi.dwActiveProcessorMask = 1;
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cachedsi.dwNumberOfProcessors = 1;
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cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
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cachedsi.dwAllocationGranularity = 0x10000;
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cachedsi.wProcessorLevel = 5; /* 586 */
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cachedsi.wProcessorRevision = 0;
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cache = 1; /* even if there is no more info, we now have a cacheentry */
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memcpy(si,&cachedsi,sizeof(*si));
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/* Hmm, reasonable processor feature defaults? */
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#ifdef linux
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{
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char line[200];
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FILE *f = fopen ("/proc/cpuinfo", "r");
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if (!f)
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return;
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while (fgets(line,200,f)!=NULL) {
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char *s,*value;
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/* NOTE: the ':' is the only character we can rely on */
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if (!(value = strchr(line,':')))
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continue;
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/* terminate the valuename */
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s = value - 1;
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while ((s >= line) && ((*s == ' ') || (*s == '\t'))) s--;
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*(s + 1) = '\0';
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/* and strip leading spaces from value */
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value += 1;
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while (*value==' ') value++;
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if ((s=strchr(value,'\n')))
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*s='\0';
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/* 2.1 method */
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if (!strcasecmp(line, "cpu family")) {
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if (isdigit (value[0])) {
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switch (value[0] - '0') {
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case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
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cachedsi.wProcessorLevel= 3;
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break;
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case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
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cachedsi.wProcessorLevel= 4;
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break;
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case 5:
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case 6: /* PPro/2/3 has same info as P1 */
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cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
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cachedsi.wProcessorLevel= 5;
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break;
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case 1: /* two-figure levels */
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if (value[1] == '5')
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{
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cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
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cachedsi.wProcessorLevel= 5;
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break;
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}
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/* fall through */
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default:
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FIXME("unknown cpu family '%s', please report ! (-> setting to 386)\n", value);
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break;
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}
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}
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continue;
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}
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/* old 2.0 method */
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if (!strcasecmp(line, "cpu")) {
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if ( isdigit (value[0]) && value[1] == '8' &&
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value[2] == '6' && value[3] == 0
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) {
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switch (value[0] - '0') {
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case 3: cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
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cachedsi.wProcessorLevel= 3;
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break;
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case 4: cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
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cachedsi.wProcessorLevel= 4;
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break;
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case 5:
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case 6: /* PPro/2/3 has same info as P1 */
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cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
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cachedsi.wProcessorLevel= 5;
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break;
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default:
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FIXME("unknown Linux 2.0 cpu family '%s', please report ! (-> setting to 386)\n", value);
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break;
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}
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}
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continue;
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}
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if (!strcasecmp(line,"fdiv_bug")) {
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if (!strncasecmp(value,"yes",3))
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PF[PF_FLOATING_POINT_PRECISION_ERRATA] = TRUE;
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continue;
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}
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if (!strcasecmp(line,"fpu")) {
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if (!strncasecmp(value,"no",2))
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PF[PF_FLOATING_POINT_EMULATED] = TRUE;
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continue;
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}
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if (!strcasecmp(line,"processor")) {
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/* processor number counts up... */
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unsigned int x;
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if (sscanf(value,"%d",&x))
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if (x+1>cachedsi.dwNumberOfProcessors)
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cachedsi.dwNumberOfProcessors=x+1;
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continue;
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}
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if (!strcasecmp(line,"stepping")) {
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int x;
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if (sscanf(value,"%d",&x))
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cachedsi.wProcessorRevision = x;
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continue;
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}
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if (!strcasecmp(line, "cpu MHz")) {
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double cmz;
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if (sscanf( value, "%lf", &cmz ) == 1) {
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/* SYSTEMINFO doesn't have a slot for cpu speed, so store in a global */
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cpuHz = cmz * 1000 * 1000;
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TRACE("CPU speed read as %lld\n", cpuHz);
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}
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continue;
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}
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if ( !strcasecmp(line,"flags") ||
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!strcasecmp(line,"features")
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) {
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if (strstr(value,"cx8"))
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PF[PF_COMPARE_EXCHANGE_DOUBLE] = TRUE;
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if (strstr(value,"mmx"))
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PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
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if (strstr(value,"tsc"))
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PF[PF_RDTSC_INSTRUCTION_AVAILABLE] = TRUE;
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if (strstr(value,"3dnow"))
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PF[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = TRUE;
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/* This will also catch sse2, but we have sse itself
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* if we have sse2, so no problem */
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if (strstr(value,"sse"))
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PF[PF_XMMI_INSTRUCTIONS_AVAILABLE] = TRUE;
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if (strstr(value,"sse2"))
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PF[PF_XMMI64_INSTRUCTIONS_AVAILABLE] = TRUE;
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if (strstr(value,"pae"))
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PF[PF_PAE_ENABLED] = TRUE;
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continue;
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}
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}
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fclose (f);
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}
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memcpy(si,&cachedsi,sizeof(*si));
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#elif defined (__NetBSD__)
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{
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int mib[2];
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int value[2];
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char model[256];
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char *cpuclass;
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FILE *f = fopen ("/var/run/dmesg.boot", "r");
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/* first deduce as much as possible from the sysctls */
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mib[0] = CTL_MACHDEP;
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#ifdef CPU_FPU_PRESENT
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mib[1] = CPU_FPU_PRESENT;
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value[1] = sizeof(int);
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if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
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if (value) PF[PF_FLOATING_POINT_EMULATED] = FALSE;
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else PF[PF_FLOATING_POINT_EMULATED] = TRUE;
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#endif
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#ifdef CPU_SSE
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mib[1] = CPU_SSE; /* this should imply MMX */
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value[1] = sizeof(int);
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if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
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if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
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#endif
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#ifdef CPU_SSE2
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mib[1] = CPU_SSE2; /* this should imply MMX */
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value[1] = sizeof(int);
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if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
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if (value) PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
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#endif
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mib[0] = CTL_HW;
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mib[1] = HW_NCPU;
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value[1] = sizeof(int);
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if (sysctl(mib, 2, value, value+1, NULL, 0) >= 0)
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if (value[0] > cachedsi.dwNumberOfProcessors)
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cachedsi.dwNumberOfProcessors = value[0];
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mib[1] = HW_MODEL;
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value[1] = 255;
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if (sysctl(mib, 2, model, value+1, NULL, 0) >= 0) {
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model[value[1]] = '\0'; /* just in case */
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cpuclass = strstr(model, "-class");
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if (cpuclass != NULL) {
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while(cpuclass > model && cpuclass[0] != '(') cpuclass--;
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if (!strncmp(cpuclass+1, "386", 3)) {
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cachedsi.dwProcessorType = PROCESSOR_INTEL_386;
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cachedsi.wProcessorLevel= 3;
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}
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if (!strncmp(cpuclass+1, "486", 3)) {
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cachedsi.dwProcessorType = PROCESSOR_INTEL_486;
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cachedsi.wProcessorLevel= 4;
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}
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if (!strncmp(cpuclass+1, "586", 3)) {
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cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
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cachedsi.wProcessorLevel= 5;
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}
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if (!strncmp(cpuclass+1, "686", 3)) {
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cachedsi.dwProcessorType = PROCESSOR_INTEL_PENTIUM;
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cachedsi.wProcessorLevel= 5;
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/* this should imply MMX */
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PF[PF_MMX_INSTRUCTIONS_AVAILABLE] = TRUE;
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}
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}
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}
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/* it may be worth reading from /var/run/dmesg.boot for
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additional information such as CX8, MMX and TSC
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(however this information should be considered less
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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.@]
|
|
* 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;
|
|
}
|