mirror of
https://github.com/ZDoom/Raze.git
synced 2024-12-02 09:02:18 +00:00
263 lines
7 KiB
C++
263 lines
7 KiB
C++
/*
|
|
**
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2005-2016 Randy Heit
|
|
** Copyright 2005-2016 Christoph Oelckers
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "x86.h"
|
|
|
|
CPUInfo CPU;
|
|
|
|
#if !defined(__amd64__) && !defined(__i386__) && !defined(_M_IX86) && !defined(_M_X64)
|
|
void CheckCPUID(CPUInfo *cpu)
|
|
{
|
|
memset(cpu, 0, sizeof(*cpu));
|
|
cpu->DataL1LineSize = 32; // Assume a 32-byte cache line
|
|
}
|
|
|
|
FString DumpCPUInfo(const CPUInfo *cpu)
|
|
{
|
|
return FString();
|
|
}
|
|
#else
|
|
|
|
#ifdef _MSC_VER
|
|
#include <intrin.h>
|
|
#endif
|
|
#include <emmintrin.h>
|
|
|
|
|
|
#ifdef __GNUC__
|
|
#if defined(__i386__) && defined(__PIC__)
|
|
// %ebx may by the PIC register. */
|
|
#define __cpuid(output, func) \
|
|
__asm__ __volatile__("xchgl\t%%ebx, %1\n\t" \
|
|
"cpuid\n\t" \
|
|
"xchgl\t%%ebx, %1\n\t" \
|
|
: "=a" ((output)[0]), "=r" ((output)[1]), "=c" ((output)[2]), "=d" ((output)[3]) \
|
|
: "a" (func));
|
|
#else
|
|
#define __cpuid(output, func) __asm__ __volatile__("cpuid" : "=a" ((output)[0]),\
|
|
"=b" ((output)[1]), "=c" ((output)[2]), "=d" ((output)[3]) : "a" (func));
|
|
#endif
|
|
#endif
|
|
|
|
void CheckCPUID(CPUInfo *cpu)
|
|
{
|
|
int foo[4];
|
|
unsigned int maxext;
|
|
|
|
memset(cpu, 0, sizeof(*cpu));
|
|
|
|
cpu->DataL1LineSize = 32; // Assume a 32-byte cache line
|
|
|
|
#if !defined(_M_IX86) && !defined(__i386__) && !defined(_M_X64) && !defined(__amd64__)
|
|
return;
|
|
#else
|
|
|
|
#if defined(_M_IX86) || defined(__i386__)
|
|
// Old 486s do not have CPUID, so we must test for its presence.
|
|
// This code is adapted from the samples in AMD's document
|
|
// entitled "AMD-K6 MMX Processor Multimedia Extensions."
|
|
#ifndef __GNUC__
|
|
__asm
|
|
{
|
|
pushfd // save EFLAGS
|
|
pop eax // store EFLAGS in EAX
|
|
mov ecx,eax // save in ECX for later testing
|
|
xor eax,0x00200000 // toggle bit 21
|
|
push eax // put to stack
|
|
popfd // save changed EAX to EFLAGS
|
|
pushfd // push EFLAGS to TOS
|
|
pop eax // store EFLAGS in EAX
|
|
cmp eax,ecx // see if bit 21 has changed
|
|
jne haveid // if no change, then no CPUID
|
|
}
|
|
return;
|
|
haveid:
|
|
#else
|
|
int oldfd, newfd;
|
|
|
|
__asm__ __volatile__("\t"
|
|
"pushf\n\t"
|
|
"popl %0\n\t"
|
|
"movl %0,%1\n\t"
|
|
"xorl $0x200000,%0\n\t"
|
|
"pushl %0\n\t"
|
|
"popf\n\t"
|
|
"pushf\n\t"
|
|
"popl %0\n\t"
|
|
: "=r" (newfd), "=r" (oldfd));
|
|
if (oldfd == newfd)
|
|
{
|
|
return;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
// Get vendor ID
|
|
__cpuid(foo, 0);
|
|
cpu->dwVendorID[0] = foo[1];
|
|
cpu->dwVendorID[1] = foo[3];
|
|
cpu->dwVendorID[2] = foo[2];
|
|
if (foo[1] == MAKE_ID('A','u','t','h') &&
|
|
foo[3] == MAKE_ID('e','n','t','i') &&
|
|
foo[2] == MAKE_ID('c','A','M','D'))
|
|
{
|
|
cpu->bIsAMD = true;
|
|
}
|
|
|
|
// Get features flags and other info
|
|
__cpuid(foo, 1);
|
|
cpu->FeatureFlags[0] = foo[1]; // Store brand index and other stuff
|
|
cpu->FeatureFlags[1] = foo[2]; // Store extended feature flags
|
|
cpu->FeatureFlags[2] = foo[3]; // Store feature flags
|
|
|
|
cpu->HyperThreading = (foo[3] & (1 << 28)) > 0;
|
|
|
|
// If CLFLUSH instruction is supported, get the real cache line size.
|
|
if (foo[3] & (1 << 19))
|
|
{
|
|
cpu->DataL1LineSize = (foo[1] & 0xFF00) >> (8 - 3);
|
|
}
|
|
|
|
cpu->Stepping = foo[0] & 0x0F;
|
|
cpu->Type = (foo[0] & 0x3000) >> 12; // valid on Intel only
|
|
cpu->Model = (foo[0] & 0xF0) >> 4;
|
|
cpu->Family = (foo[0] & 0xF00) >> 8;
|
|
|
|
if (cpu->Family == 15)
|
|
{ // Add extended family.
|
|
cpu->Family += (foo[0] >> 20) & 0xFF;
|
|
}
|
|
if (cpu->Family == 6 || cpu->Family == 15)
|
|
{ // Add extended model ID.
|
|
cpu->Model |= (foo[0] >> 12) & 0xF0;
|
|
}
|
|
|
|
// Check for extended functions.
|
|
__cpuid(foo, 0x80000000);
|
|
maxext = (unsigned int)foo[0];
|
|
|
|
if (maxext >= 0x80000004)
|
|
{ // Get processor brand string.
|
|
__cpuid((int *)&cpu->dwCPUString[0], 0x80000002);
|
|
__cpuid((int *)&cpu->dwCPUString[4], 0x80000003);
|
|
__cpuid((int *)&cpu->dwCPUString[8], 0x80000004);
|
|
}
|
|
|
|
if (cpu->bIsAMD)
|
|
{
|
|
if (maxext >= 0x80000005)
|
|
{ // Get data L1 cache info.
|
|
__cpuid(foo, 0x80000005);
|
|
cpu->AMD_DataL1Info = foo[2];
|
|
}
|
|
if (maxext >= 0x80000001)
|
|
{ // Get AMD-specific feature flags.
|
|
__cpuid(foo, 0x80000001);
|
|
cpu->AMDStepping = foo[0] & 0x0F;
|
|
cpu->AMDModel = (foo[0] & 0xF0) >> 4;
|
|
cpu->AMDFamily = (foo[0] & 0xF00) >> 8;
|
|
|
|
if (cpu->AMDFamily == 15)
|
|
{ // Add extended model and family.
|
|
cpu->AMDFamily += (foo[0] >> 20) & 0xFF;
|
|
cpu->AMDModel |= (foo[0] >> 12) & 0xF0;
|
|
}
|
|
cpu->FeatureFlags[3] = foo[3]; // AMD feature flags
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
FString DumpCPUInfo(const CPUInfo *cpu)
|
|
{
|
|
char cpustring[4*4*3+1];
|
|
|
|
// Why does Intel right-justify this string (on P4s)
|
|
// or add extra spaces (on Cores)?
|
|
const char *f = cpu->CPUString;
|
|
char *t;
|
|
|
|
// Skip extra whitespace at the beginning.
|
|
while (*f == ' ')
|
|
{
|
|
++f;
|
|
}
|
|
|
|
// Copy string to temp buffer, but condense consecutive
|
|
// spaces to a single space character.
|
|
for (t = cpustring; *f != '\0'; ++f)
|
|
{
|
|
if (*f == ' ' && *(f - 1) == ' ')
|
|
{
|
|
continue;
|
|
}
|
|
*t++ = *f;
|
|
}
|
|
*t = '\0';
|
|
|
|
FString out;
|
|
if (cpu->VendorID[0])
|
|
{
|
|
out.Format("CPU Vendor ID: %s\n", cpu->VendorID);
|
|
if (cpustring[0])
|
|
{
|
|
out.AppendFormat(" Name: %s\n", cpustring);
|
|
}
|
|
if (cpu->bIsAMD)
|
|
{
|
|
out.AppendFormat(" Family %d (%d), Model %d, Stepping %d\n",
|
|
cpu->Family, cpu->AMDFamily, cpu->AMDModel, cpu->AMDStepping);
|
|
}
|
|
else
|
|
{
|
|
out.AppendFormat(" Family %d, Model %d, Stepping %d\n",
|
|
cpu->Family, cpu->Model, cpu->Stepping);
|
|
}
|
|
out.AppendFormat(" Features:");
|
|
if (cpu->bSSE2) out += (" SSE2");
|
|
if (cpu->bSSE3) out += (" SSE3");
|
|
if (cpu->bSSSE3) out += (" SSSE3");
|
|
if (cpu->bSSE41) out += (" SSE4.1");
|
|
if (cpu->bSSE42) out += (" SSE4.2");
|
|
if (cpu->b3DNow) out += (" 3DNow!");
|
|
if (cpu->b3DNowPlus) out += (" 3DNow!+");
|
|
if (cpu->HyperThreading) out += (" HyperThreading");
|
|
out += ("\n");
|
|
}
|
|
return out;
|
|
}
|
|
|
|
#endif
|