mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-23 13:30:02 +00:00
243 lines
6.6 KiB
C++
243 lines
6.6 KiB
C++
// Copyright (C) 2003 Dolphin Project.
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, version 2.0.
|
|
|
|
// This program 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 General Public License 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official SVN repository and contact information can be found at
|
|
// http://code.google.com/p/dolphin-emu/
|
|
|
|
#ifdef ANDROID
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#endif
|
|
|
|
#include <memory.h>
|
|
#include "base/logging.h"
|
|
#include "base/basictypes.h"
|
|
|
|
#ifdef _WIN32
|
|
#define _interlockedbittestandset workaround_ms_header_bug_platform_sdk6_set
|
|
#define _interlockedbittestandreset workaround_ms_header_bug_platform_sdk6_reset
|
|
#define _interlockedbittestandset64 workaround_ms_header_bug_platform_sdk6_set64
|
|
#define _interlockedbittestandreset64 workaround_ms_header_bug_platform_sdk6_reset64
|
|
#include <intrin.h>
|
|
#undef _interlockedbittestandset
|
|
#undef _interlockedbittestandreset
|
|
#undef _interlockedbittestandset64
|
|
#undef _interlockedbittestandreset64
|
|
#else
|
|
|
|
#if !defined(_M_GENERIC) && !defined(MIPS)
|
|
#include <xmmintrin.h>
|
|
#endif
|
|
|
|
#if defined __FreeBSD__
|
|
#include <sys/types.h>
|
|
#include <machine/cpufunc.h>
|
|
#elif !defined(MIPS)
|
|
|
|
void __cpuidex(int regs[4], int cpuid_leaf, int ecxval)
|
|
{
|
|
#ifdef ANDROID
|
|
// Use the /dev/cpu/%i/cpuid interface
|
|
int f = open("/dev/cpu/0/cpuid", O_RDONLY);
|
|
if (f) {
|
|
lseek64(f, ((uint64_t)ecxval << 32) | cpuid_leaf, SEEK_SET);
|
|
read(f, (void *)regs, 16);
|
|
close(f);
|
|
} else {
|
|
ELOG("CPUID %08x failed!", cpuid_leaf);
|
|
}
|
|
#else
|
|
asm volatile (
|
|
#if defined(__i386__)
|
|
"pushl %%ebx;\n\t"
|
|
#endif
|
|
"cpuid;\n\t"
|
|
"movl %%ebx, %1;\n\t"
|
|
#if defined(__i386__)
|
|
"popl %%ebx;\n\t"
|
|
#endif
|
|
:"=a" (regs[0]), "=m" (regs[1]), "=c" (regs[2]), "=d" (regs[3])
|
|
:"a" (cpuid_leaf), "c" (ecxval)
|
|
#if !defined(__i386__)
|
|
:"%ebx");
|
|
#else
|
|
);
|
|
#endif
|
|
#endif
|
|
}
|
|
void __cpuid(int regs[4], int cpuid_leaf)
|
|
{
|
|
__cpuidex(regs, cpuid_leaf, 0);
|
|
}
|
|
|
|
#endif
|
|
#endif
|
|
|
|
#include "Common.h"
|
|
#include "CPUDetect.h"
|
|
#include "StringUtils.h"
|
|
|
|
CPUInfo cpu_info;
|
|
|
|
CPUInfo::CPUInfo() {
|
|
Detect();
|
|
}
|
|
|
|
// Detects the various cpu features
|
|
void CPUInfo::Detect()
|
|
{
|
|
memset(this, 0, sizeof(*this));
|
|
#ifdef _M_IX86
|
|
Mode64bit = false;
|
|
#elif defined (_M_X64)
|
|
Mode64bit = true;
|
|
OS64bit = true;
|
|
#endif
|
|
num_cores = 1;
|
|
|
|
#ifdef _WIN32
|
|
#ifdef _M_IX86
|
|
BOOL f64 = false;
|
|
IsWow64Process(GetCurrentProcess(), &f64);
|
|
OS64bit = (f64 == TRUE) ? true : false;
|
|
#endif
|
|
#endif
|
|
|
|
// Set obvious defaults, for extra safety
|
|
if (Mode64bit) {
|
|
bSSE = true;
|
|
bSSE2 = true;
|
|
bLongMode = true;
|
|
}
|
|
|
|
// Assume CPU supports the CPUID instruction. Those that don't can barely
|
|
// boot modern OS:es anyway.
|
|
int cpu_id[4];
|
|
memset(cpu_string, 0, sizeof(cpu_string));
|
|
|
|
// Detect CPU's CPUID capabilities, and grab cpu string
|
|
__cpuid(cpu_id, 0x00000000);
|
|
u32 max_std_fn = cpu_id[0]; // EAX
|
|
*((int *)cpu_string) = cpu_id[1];
|
|
*((int *)(cpu_string + 4)) = cpu_id[3];
|
|
*((int *)(cpu_string + 8)) = cpu_id[2];
|
|
__cpuid(cpu_id, 0x80000000);
|
|
u32 max_ex_fn = cpu_id[0];
|
|
if (!strcmp(cpu_string, "GenuineIntel"))
|
|
vendor = VENDOR_INTEL;
|
|
else if (!strcmp(cpu_string, "AuthenticAMD"))
|
|
vendor = VENDOR_AMD;
|
|
else
|
|
vendor = VENDOR_OTHER;
|
|
|
|
// Set reasonable default brand string even if brand string not available.
|
|
strcpy(brand_string, cpu_string);
|
|
|
|
// Detect family and other misc stuff.
|
|
bool ht = false;
|
|
HTT = ht;
|
|
logical_cpu_count = 1;
|
|
if (max_std_fn >= 1) {
|
|
__cpuid(cpu_id, 0x00000001);
|
|
logical_cpu_count = (cpu_id[1] >> 16) & 0xFF;
|
|
ht = (cpu_id[3] >> 28) & 1;
|
|
|
|
if ((cpu_id[3] >> 25) & 1) bSSE = true;
|
|
if ((cpu_id[3] >> 26) & 1) bSSE2 = true;
|
|
if ((cpu_id[2]) & 1) bSSE3 = true;
|
|
if ((cpu_id[2] >> 9) & 1) bSSSE3 = true;
|
|
if ((cpu_id[2] >> 19) & 1) bSSE4_1 = true;
|
|
if ((cpu_id[2] >> 20) & 1) bSSE4_2 = true;
|
|
if ((cpu_id[2] >> 28) & 1) bAVX = true;
|
|
if ((cpu_id[2] >> 25) & 1) bAES = true;
|
|
}
|
|
if (max_ex_fn >= 0x80000004) {
|
|
// Extract brand string
|
|
__cpuid(cpu_id, 0x80000002);
|
|
memcpy(brand_string, cpu_id, sizeof(cpu_id));
|
|
__cpuid(cpu_id, 0x80000003);
|
|
memcpy(brand_string + 16, cpu_id, sizeof(cpu_id));
|
|
__cpuid(cpu_id, 0x80000004);
|
|
memcpy(brand_string + 32, cpu_id, sizeof(cpu_id));
|
|
}
|
|
if (max_ex_fn >= 0x80000001) {
|
|
// Check for more features.
|
|
__cpuid(cpu_id, 0x80000001);
|
|
if (cpu_id[2] & 1) bLAHFSAHF64 = true;
|
|
// CmpLegacy (bit 2) is deprecated.
|
|
if ((cpu_id[3] >> 29) & 1) bLongMode = true;
|
|
}
|
|
|
|
num_cores = (logical_cpu_count == 0) ? 1 : logical_cpu_count;
|
|
|
|
if (max_ex_fn >= 0x80000008) {
|
|
// Get number of cores. This is a bit complicated. Following AMD manual here.
|
|
__cpuid(cpu_id, 0x80000008);
|
|
int apic_id_core_id_size = (cpu_id[2] >> 12) & 0xF;
|
|
if (apic_id_core_id_size == 0) {
|
|
if (ht) {
|
|
// 0x0B is the preferred method on Core i series processors.
|
|
// Inspired by https://github.com/D-Programming-Language/druntime/blob/23b0d1f41e27638bda2813af55823b502195a58d/src/core/cpuid.d#L562.
|
|
bool hasLeafB = false;
|
|
if (vendor == VENDOR_INTEL && max_std_fn >= 0x0B) {
|
|
__cpuidex(cpu_id, 0x0B, 0);
|
|
if (cpu_id[1] != 0) {
|
|
logical_cpu_count = cpu_id[1] & 0xFFFF;
|
|
__cpuidex(cpu_id, 0x0B, 1);
|
|
int totalThreads = cpu_id[1] & 0xFFFF;
|
|
num_cores = totalThreads / logical_cpu_count;
|
|
hasLeafB = true;
|
|
}
|
|
}
|
|
// Old new mechanism for modern Intel CPUs.
|
|
if (!hasLeafB && vendor == VENDOR_INTEL) {
|
|
__cpuid(cpu_id, 0x00000004);
|
|
int cores_x_package = ((cpu_id[0] >> 26) & 0x3F) + 1;
|
|
HTT = (cores_x_package < logical_cpu_count);
|
|
cores_x_package = ((logical_cpu_count % cores_x_package) == 0) ? cores_x_package : 1;
|
|
num_cores = (cores_x_package > 1) ? cores_x_package : num_cores;
|
|
logical_cpu_count /= cores_x_package;
|
|
}
|
|
}
|
|
} else {
|
|
// Use AMD's new method.
|
|
num_cores = (cpu_id[2] & 0xFF) + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Turn the cpu info into a string we can show
|
|
std::string CPUInfo::Summarize()
|
|
{
|
|
std::string sum;
|
|
if (num_cores == 1)
|
|
sum = StringFromFormat("%s, %i core", cpu_string, num_cores);
|
|
else
|
|
{
|
|
sum = StringFromFormat("%s, %i cores", cpu_string, num_cores);
|
|
if (HTT) sum += StringFromFormat(" (%i logical threads per physical core)", logical_cpu_count);
|
|
}
|
|
if (bSSE) sum += ", SSE";
|
|
if (bSSE2) sum += ", SSE2";
|
|
if (bSSE3) sum += ", SSE3";
|
|
if (bSSSE3) sum += ", SSSE3";
|
|
if (bSSE4_1) sum += ", SSE4.1";
|
|
if (bSSE4_2) sum += ", SSE4.2";
|
|
if (HTT) sum += ", HTT";
|
|
if (bAVX) sum += ", AVX";
|
|
if (bAES) sum += ", AES";
|
|
if (bLongMode) sum += ", 64-bit support";
|
|
return sum;
|
|
}
|