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RetroArch/libretro-common/features/features_cpu.c
Emanuel Haupt 7a0d568f04
Incorporate FreeBSD port patches () 
This commit imports a series of patches from the FreeBSD port of RetroArch to
improve build compatibility and address specific issues encountered in the
FreeBSD environment. These patches, sourced from the FreeBSD Ports collection
(https://cgit.freebsd.org/ports/tree/games/retroarch/files), have been adapted
and tested to ensure they integrate seamlessly with the current build process.
2024-09-10 18:11:40 -07:00

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23 KiB
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/* Copyright (C) 2010-2020 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (features_cpu.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#if defined(_WIN32)
#include <direct.h>
#else
#include <unistd.h>
#endif
#include <compat/strl.h>
#include <streams/file_stream.h>
#include <libretro.h>
#include <features/features_cpu.h>
#include <retro_timers.h>
#if defined(_WIN32) && !defined(_XBOX)
#include <windows.h>
#endif
#ifdef __PSL1GHT__
#include <lv2/systime.h>
#endif
#if defined(_XBOX360)
#include <PPCIntrinsics.h>
#elif !defined(__MACH__) && !defined(__FreeBSD__) && (defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__) || defined(__PPC64__) || defined(__powerpc64__))
#ifndef _PPU_INTRINSICS_H
#include <ppu_intrinsics.h>
#endif
#elif defined(_POSIX_MONOTONIC_CLOCK) || defined(ANDROID) || defined(__QNX__) || defined(DJGPP)
/* POSIX_MONOTONIC_CLOCK is not being defined in Android headers despite support being present. */
#include <time.h>
#endif
#if defined(__QNX__) && !defined(CLOCK_MONOTONIC)
#define CLOCK_MONOTONIC 2
#endif
#if defined(PSP)
#include <pspkernel.h>
#endif
#if defined(PSP) || defined(__PSL1GHT__)
#include <sys/time.h>
#endif
#if defined(PSP)
#include <psprtc.h>
#endif
#if defined(VITA)
#include <psp2/kernel/processmgr.h>
#include <psp2/rtc.h>
#endif
#if defined(ORBIS)
#include <orbis/libkernel.h>
#endif
#if defined(PS2)
#include <ps2sdkapi.h>
#endif
#if !defined(__PSL1GHT__) && defined(__PS3__)
#include <sys/sys_time.h>
#endif
#ifdef GEKKO
#include <ogc/lwp_watchdog.h>
#endif
#ifdef WIIU
#include <wiiu/os/time.h>
#endif
#if defined(HAVE_LIBNX)
#include <switch.h>
#elif defined(SWITCH)
#include <libtransistor/types.h>
#include <libtransistor/svc.h>
#endif
#if defined(_3DS)
#include <3ds/svc.h>
#include <3ds/os.h>
#include <3ds/services/cfgu.h>
#endif
/* iOS/OSX specific. Lacks clock_gettime(), so implement it. */
#ifdef __MACH__
#include <sys/time.h>
#ifndef CLOCK_MONOTONIC
#define CLOCK_MONOTONIC 0
#endif
#ifndef CLOCK_REALTIME
#define CLOCK_REALTIME 0
#endif
/**
* TODO/FIXME: clock_gettime function is part of iOS 10 now
**/
static int ra_clock_gettime(int clk_ik, struct timespec *t)
{
struct timeval now;
int rv = gettimeofday(&now, NULL);
if (rv)
return rv;
t->tv_sec = now.tv_sec;
t->tv_nsec = now.tv_usec * 1000;
return 0;
}
#endif
#if defined(__MACH__) && __IPHONE_OS_VERSION_MIN_REQUIRED < 100000
#else
#define ra_clock_gettime clock_gettime
#endif
#ifdef EMSCRIPTEN
#include <emscripten.h>
#endif
#if defined(BSD) || defined(__APPLE__)
#include <sys/sysctl.h>
#endif
#include <string.h>
retro_perf_tick_t cpu_features_get_perf_counter(void)
{
retro_perf_tick_t time_ticks = 0;
#if defined(_WIN32)
long tv_sec, tv_usec;
#if defined(_MSC_VER) && _MSC_VER <= 1200
static const unsigned __int64 epoch = 11644473600000000;
#else
static const unsigned __int64 epoch = 11644473600000000ULL;
#endif
FILETIME file_time;
SYSTEMTIME system_time;
ULARGE_INTEGER ularge;
GetSystemTime(&system_time);
SystemTimeToFileTime(&system_time, &file_time);
ularge.LowPart = file_time.dwLowDateTime;
ularge.HighPart = file_time.dwHighDateTime;
tv_sec = (long)((ularge.QuadPart - epoch) / 10000000L);
tv_usec = (long)(system_time.wMilliseconds * 1000);
time_ticks = (1000000 * tv_sec + tv_usec);
#elif defined(GEKKO)
time_ticks = gettime();
#elif !defined(__MACH__) && !defined(__FreeBSD__) && (defined(_XBOX360) || defined(__powerpc__) || defined(__ppc__) || defined(__POWERPC__) || defined(__PSL1GHT__) || defined(__PPC64__) || defined(__powerpc64__))
time_ticks = __mftb();
#elif (defined(_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK > 0) || defined(__QNX__) || defined(ANDROID)
struct timespec tv;
if (ra_clock_gettime(CLOCK_MONOTONIC, &tv) == 0)
time_ticks = (retro_perf_tick_t)tv.tv_sec * 1000000000 +
(retro_perf_tick_t)tv.tv_nsec;
#elif defined(__GNUC__) && defined(__i386__) || defined(__i486__) || defined(__i686__) || defined(_M_X64) || defined(_M_AMD64)
__asm__ volatile ("rdtsc" : "=A" (time_ticks));
#elif defined(__GNUC__) && defined(__x86_64__) || defined(_M_IX86)
unsigned a, d;
__asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
time_ticks = (retro_perf_tick_t)a | ((retro_perf_tick_t)d << 32);
#elif defined(__ARM_ARCH_6__)
__asm__ volatile( "mrc p15, 0, %0, c9, c13, 0" : "=r"(time_ticks) );
#elif defined(__aarch64__)
__asm__ volatile( "mrs %0, cntvct_el0" : "=r"(time_ticks) );
#elif defined(PSP) || defined(VITA)
time_ticks = sceKernelGetSystemTimeWide();
#elif defined(ORBIS)
sceRtcGetCurrentTick((SceRtcTick*)&time_ticks);
#elif defined(PS2)
time_ticks = ps2_clock();
#elif defined(_3DS)
time_ticks = svcGetSystemTick();
#elif defined(WIIU)
time_ticks = OSGetSystemTime();
#elif defined(HAVE_LIBNX)
time_ticks = armGetSystemTick();
#elif defined(EMSCRIPTEN)
time_ticks = emscripten_get_now() * 1000;
#endif
return time_ticks;
}
retro_time_t cpu_features_get_time_usec(void)
{
#if defined(_WIN32)
static LARGE_INTEGER freq;
LARGE_INTEGER count;
/* Frequency is guaranteed to not change. */
if (!freq.QuadPart && !QueryPerformanceFrequency(&freq))
return 0;
if (!QueryPerformanceCounter(&count))
return 0;
return (count.QuadPart / freq.QuadPart * 1000000) + (count.QuadPart % freq.QuadPart * 1000000 / freq.QuadPart);
#elif defined(__PSL1GHT__)
return sysGetSystemTime();
#elif !defined(__PSL1GHT__) && defined(__PS3__)
return sys_time_get_system_time();
#elif defined(GEKKO)
return ticks_to_microsecs(gettime());
#elif defined(WIIU)
return ticks_to_us(OSGetSystemTime());
#elif defined(SWITCH) || defined(HAVE_LIBNX)
return (svcGetSystemTick() * 10) / 192;
#elif defined(_3DS)
return osGetTime() * 1000;
#elif defined(_POSIX_MONOTONIC_CLOCK) || defined(__QNX__) || defined(ANDROID) || defined(__MACH__)
struct timespec tv;
if (ra_clock_gettime(CLOCK_MONOTONIC, &tv) < 0)
return 0;
return tv.tv_sec * INT64_C(1000000) + (tv.tv_nsec + 500) / 1000;
#elif defined(EMSCRIPTEN)
return emscripten_get_now() * 1000;
#elif defined(PS2)
return ps2_clock() / PS2_CLOCKS_PER_MSEC * 1000;
#elif defined(VITA) || defined(PSP)
return sceKernelGetSystemTimeWide();
#elif defined(DJGPP)
return uclock() * 1000000LL / UCLOCKS_PER_SEC;
#elif defined(ORBIS)
return sceKernelGetProcessTime();
#else
#error "Your platform does not have a timer function implemented in cpu_features_get_time_usec(). Cannot continue."
#endif
}
#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i686__) || (defined(_M_X64) && _MSC_VER > 1310) || (defined(_M_IX86) && _MSC_VER > 1310)
#define CPU_X86
#endif
#if defined(_MSC_VER) && !defined(_XBOX)
#if (_MSC_VER > 1310)
#include <intrin.h>
#endif
#endif
#if defined(CPU_X86) && !defined(__MACH__)
void x86_cpuid(int func, int flags[4])
{
/* On Android, we compile RetroArch with PIC, and we
* are not allowed to clobber the ebx register. */
#ifdef __x86_64__
#define REG_b "rbx"
#define REG_S "rsi"
#else
#define REG_b "ebx"
#define REG_S "esi"
#endif
#if defined(__GNUC__)
__asm__ volatile (
"mov %%" REG_b ", %%" REG_S "\n"
"cpuid\n"
"xchg %%" REG_b ", %%" REG_S "\n"
: "=a"(flags[0]), "=S"(flags[1]), "=c"(flags[2]), "=d"(flags[3])
: "a"(func));
#elif defined(_MSC_VER)
__cpuid(flags, func);
#else
#ifndef NDEBUG
printf("Unknown compiler. Cannot check CPUID with inline assembly.\n");
#endif
memset(flags, 0, 4 * sizeof(int));
#endif
}
/* Only runs on i686 and above. Needs to be conditionally run. */
static uint64_t xgetbv_x86(uint32_t idx)
{
#if defined(__GNUC__)
uint32_t eax, edx;
__asm__ volatile (
/* Older GCC versions (Apple's GCC for example) do
* not understand xgetbv instruction.
* Stamp out the machine code directly.
*/
".byte 0x0f, 0x01, 0xd0\n"
: "=a"(eax), "=d"(edx) : "c"(idx));
return ((uint64_t)edx << 32) | eax;
#elif _MSC_FULL_VER >= 160040219
/* Intrinsic only works on 2010 SP1 and above. */
return _xgetbv(idx);
#else
#ifndef NDEBUG
printf("Unknown compiler. Cannot check xgetbv bits.\n");
#endif
return 0;
#endif
}
#endif
#if defined(__ARM_NEON__)
#if defined(__arm__)
static void arm_enable_runfast_mode(void)
{
/* RunFast mode. Enables flush-to-zero and some
* floating point optimizations. */
static const unsigned x = 0x04086060;
static const unsigned y = 0x03000000;
int r;
__asm__ volatile(
"fmrx %0, fpscr \n\t" /* r0 = FPSCR */
"and %0, %0, %1 \n\t" /* r0 = r0 & 0x04086060 */
"orr %0, %0, %2 \n\t" /* r0 = r0 | 0x03000000 */
"fmxr fpscr, %0 \n\t" /* FPSCR = r0 */
: "=r"(r)
: "r"(x), "r"(y)
);
}
#endif
#endif
#if defined(__linux__) && !defined(CPU_X86)
static unsigned char check_arm_cpu_feature(const char* feature)
{
char line[1024];
unsigned char status = 0;
RFILE *fp = filestream_open("/proc/cpuinfo",
RETRO_VFS_FILE_ACCESS_READ,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!fp)
return 0;
while (filestream_gets(fp, line, sizeof(line)))
{
if (strncmp(line, "Features\t: ", 11))
continue;
if (strstr(line + 11, feature))
status = 1;
break;
}
filestream_close(fp);
return status;
}
#if !defined(_SC_NPROCESSORS_ONLN)
/**
* parse_decimal:
*
* Parse an decimal integer starting from 'input', but not going further
* than 'limit'. Return the value into '*result'.
*
* NOTE: Does not skip over leading spaces, or deal with sign characters.
* NOTE: Ignores overflows.
*
* The function returns NULL in case of error (bad format), or the new
* position after the decimal number in case of success (which will always
* be <= 'limit').
*
* Leaf function.
**/
static const char *parse_decimal(const char* input,
const char* limit, int* result)
{
const char* p = input;
int val = 0;
while (p < limit)
{
int d = (*p - '0');
if ((unsigned)d >= 10U)
break;
val = val*10 + d;
p++;
}
if (p == input)
return NULL;
*result = val;
return p;
}
/**
* cpulist_parse:
* Parse a textual list of cpus and store the result inside a CpuList object.
* Input format is the following:
* - comma-separated list of items (no spaces)
* - each item is either a single decimal number (cpu index), or a range made
* of two numbers separated by a single dash (-). Ranges are inclusive.
*
* Examples: 0
* 2,4-127,128-143
* 0-1
**/
static void cpulist_parse(CpuList* list, char **buf, ssize_t length)
{
const char* p = (const char*)buf;
const char* end = p + length;
/* NOTE: the input line coming from sysfs typically contains a
* trailing newline, so take care of it in the code below
*/
while (p < end && *p != '\n')
{
int val, start_value, end_value;
/* Find the end of current item, and put it into 'q' */
const char *q = (const char*)memchr(p, ',', end-p);
if (!q)
q = end;
/* Get first value */
if (!(p = parse_decimal(p, q, &start_value)))
return;
end_value = start_value;
/* If we're not at the end of the item, expect a dash and
* and integer; extract end value.
*/
if (p < q && *p == '-')
{
if (!(p = parse_decimal(p+1, q, &end_value)))
return;
}
/* Set bits CPU list bits */
for (val = start_value; val <= end_value; val++)
{
if ((unsigned)val < 32)
list->mask |= (uint32_t)(UINT32_C(1) << val);
}
/* Jump to next item */
p = q;
if (p < end)
p++;
}
}
/**
* cpulist_read_from:
*
* Read a CPU list from one sysfs file
**/
static void cpulist_read_from(CpuList* list, const char* filename)
{
ssize_t length;
char *buf = NULL;
list->mask = 0;
if (filestream_read_file(filename, (void**)&buf, &length) != 1)
return;
cpulist_parse(list, &buf, length);
if (buf)
free(buf);
buf = NULL;
}
#endif
#endif
unsigned cpu_features_get_core_amount(void)
{
#if defined(_WIN32) && !defined(_XBOX)
/* Win32 */
SYSTEM_INFO sysinfo;
#if defined(__WINRT__) || defined(WINAPI_FAMILY) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
GetNativeSystemInfo(&sysinfo);
#else
GetSystemInfo(&sysinfo);
#endif
return sysinfo.dwNumberOfProcessors;
#elif defined(GEKKO)
return 1;
#elif defined(PSP) || defined(PS2)
return 1;
#elif defined(__PSL1GHT__) || !defined(__PSL1GHT__) && defined(__PS3__)
return 1; /* Only one PPU, SPUs don't really count */
#elif defined(VITA)
return 4;
#elif defined(HAVE_LIBNX) || defined(SWITCH)
return 4;
#elif defined(_3DS)
u8 device_model = 0xFF;
CFGU_GetSystemModel(&device_model);/*(0 = O3DS, 1 = O3DSXL, 2 = N3DS, 3 = 2DS, 4 = N3DSXL, 5 = N2DSXL)*/
switch (device_model)
{
case 0:
case 1:
case 3:
/*Old 3/2DS*/
return 2;
case 2:
case 4:
case 5:
/*New 3/2DS*/
return 4;
default:
/*Unknown Device Or Check Failed*/
break;
}
return 1;
#elif defined(WIIU)
return 3;
#elif defined(_SC_NPROCESSORS_ONLN)
/* Linux, most UNIX-likes. */
long ret = sysconf(_SC_NPROCESSORS_ONLN);
if (ret <= 0)
return (unsigned)1;
return (unsigned)ret;
#elif defined(BSD) || defined(__APPLE__)
/* BSD */
/* Copypasta from stackoverflow, dunno if it works. */
int num_cpu = 0;
int mib[4];
size_t len = sizeof(num_cpu);
mib[0] = CTL_HW;
mib[1] = HW_AVAILCPU;
sysctl(mib, 2, &num_cpu, &len, NULL, 0);
if (num_cpu < 1)
{
mib[1] = HW_NCPU;
sysctl(mib, 2, &num_cpu, &len, NULL, 0);
if (num_cpu < 1)
num_cpu = 1;
}
return num_cpu;
#elif defined(__linux__)
CpuList cpus_present[1];
CpuList cpus_possible[1];
int amount = 0;
cpulist_read_from(cpus_present, "/sys/devices/system/cpu/present");
cpulist_read_from(cpus_possible, "/sys/devices/system/cpu/possible");
/* Compute the intersection of both sets to get the actual number of
* CPU cores that can be used on this device by the kernel.
*/
cpus_present->mask &= cpus_possible->mask;
amount = __builtin_popcount(cpus_present->mask);
if (amount == 0)
return 1;
return amount;
#elif defined(_XBOX360)
return 3;
#else
/* No idea, assume single core. */
return 1;
#endif
}
/* According to http://en.wikipedia.org/wiki/CPUID */
#define VENDOR_INTEL_b 0x756e6547
#define VENDOR_INTEL_c 0x6c65746e
#define VENDOR_INTEL_d 0x49656e69
uint64_t cpu_features_get(void)
{
uint64_t cpu = 0;
#if defined(CPU_X86) && !defined(__MACH__)
int vendor_is_intel = 0;
const int avx_flags = (1 << 27) | (1 << 28);
#endif
#if defined(__MACH__)
size_t len = sizeof(size_t);
if (sysctlbyname("hw.optional.floatingpoint", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_CMOV;
#if defined(CPU_X86)
len = sizeof(size_t);
if (sysctlbyname("hw.optional.mmx", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_MMX | RETRO_SIMD_MMXEXT;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.sse", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_SSE;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.sse2", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_SSE2;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.sse3", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_SSE3;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.supplementalsse3", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_SSSE3;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.sse4_1", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_SSE4;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.sse4_2", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_SSE42;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.aes", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_AES;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.avx1_0", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_AVX;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.avx2_0", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_AVX2;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.altivec", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_VMX;
#else
len = sizeof(size_t);
if (sysctlbyname("hw.optional.neon", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_NEON;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.neon_fp16", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_VFPV3;
len = sizeof(size_t);
if (sysctlbyname("hw.optional.neon_hpfp", NULL, &len, NULL, 0) == 0)
cpu |= RETRO_SIMD_VFPV4;
#endif
#elif defined(_XBOX1)
cpu |= RETRO_SIMD_MMX | RETRO_SIMD_SSE | RETRO_SIMD_MMXEXT;
#elif defined(CPU_X86)
unsigned max_flag = 0;
int flags[4];
int vendor_shuffle[3];
char vendor[13];
x86_cpuid(0, flags);
vendor_shuffle[0] = flags[1];
vendor_shuffle[1] = flags[3];
vendor_shuffle[2] = flags[2];
vendor[0] = '\0';
memcpy(vendor, vendor_shuffle, sizeof(vendor_shuffle));
/* printf("[CPUID]: Vendor: %s\n", vendor); */
vendor_is_intel = (
flags[1] == VENDOR_INTEL_b &&
flags[2] == VENDOR_INTEL_c &&
flags[3] == VENDOR_INTEL_d);
max_flag = flags[0];
if (max_flag < 1) /* Does CPUID not support func = 1? (unlikely ...) */
return 0;
x86_cpuid(1, flags);
if (flags[3] & (1 << 15))
cpu |= RETRO_SIMD_CMOV;
if (flags[3] & (1 << 23))
cpu |= RETRO_SIMD_MMX;
/* SSE also implies MMXEXT (according to FFmpeg source). */
if (flags[3] & (1 << 25))
cpu |= RETRO_SIMD_SSE | RETRO_SIMD_MMXEXT;
if (flags[3] & (1 << 26))
cpu |= RETRO_SIMD_SSE2;
if (flags[2] & (1 << 0))
cpu |= RETRO_SIMD_SSE3;
if (flags[2] & (1 << 9))
cpu |= RETRO_SIMD_SSSE3;
if (flags[2] & (1 << 19))
cpu |= RETRO_SIMD_SSE4;
if (flags[2] & (1 << 20))
cpu |= RETRO_SIMD_SSE42;
if ((flags[2] & (1 << 23)))
cpu |= RETRO_SIMD_POPCNT;
if (vendor_is_intel && (flags[2] & (1 << 22)))
cpu |= RETRO_SIMD_MOVBE;
if (flags[2] & (1 << 25))
cpu |= RETRO_SIMD_AES;
/* Must only perform xgetbv check if we have
* AVX CPU support (guaranteed to have at least i686). */
if (((flags[2] & avx_flags) == avx_flags)
&& ((xgetbv_x86(0) & 0x6) == 0x6))
cpu |= RETRO_SIMD_AVX;
if (max_flag >= 7)
{
x86_cpuid(7, flags);
if (flags[1] & (1 << 5))
cpu |= RETRO_SIMD_AVX2;
}
x86_cpuid(0x80000000, flags);
max_flag = flags[0];
if (max_flag >= 0x80000001u)
{
x86_cpuid(0x80000001, flags);
if (flags[3] & (1 << 23))
cpu |= RETRO_SIMD_MMX;
if (flags[3] & (1 << 22))
cpu |= RETRO_SIMD_MMXEXT;
}
#elif defined(__linux__)
if (check_arm_cpu_feature("neon"))
{
cpu |= RETRO_SIMD_NEON;
#if defined(__ARM_NEON__) && defined(__arm__)
arm_enable_runfast_mode();
#endif
}
if (check_arm_cpu_feature("vfpv3"))
cpu |= RETRO_SIMD_VFPV3;
if (check_arm_cpu_feature("vfpv4"))
cpu |= RETRO_SIMD_VFPV4;
if (check_arm_cpu_feature("asimd"))
{
cpu |= RETRO_SIMD_ASIMD;
#ifdef __ARM_NEON__
cpu |= RETRO_SIMD_NEON;
#if defined(__arm__)
arm_enable_runfast_mode();
#endif
#endif
}
#if 0
check_arm_cpu_feature("swp");
check_arm_cpu_feature("half");
check_arm_cpu_feature("thumb");
check_arm_cpu_feature("fastmult");
check_arm_cpu_feature("vfp");
check_arm_cpu_feature("edsp");
check_arm_cpu_feature("thumbee");
check_arm_cpu_feature("tls");
check_arm_cpu_feature("idiva");
check_arm_cpu_feature("idivt");
#endif
#elif defined(__ARM_NEON__)
cpu |= RETRO_SIMD_NEON;
#if defined(__arm__)
arm_enable_runfast_mode();
#endif
#elif defined(__ALTIVEC__)
cpu |= RETRO_SIMD_VMX;
#elif defined(XBOX360)
cpu |= RETRO_SIMD_VMX128;
#elif defined(PSP) || defined(PS2)
cpu |= RETRO_SIMD_VFPU;
#elif defined(GEKKO)
cpu |= RETRO_SIMD_PS;
#endif
return cpu;
}
void cpu_features_get_model_name(char *name, int len)
{
#if defined(CPU_X86) && !defined(__MACH__)
union {
int32_t i[4];
uint32_t u[4];
uint8_t s[16];
} flags;
int i, j;
int pos = 0;
bool start = false;
if (!name)
return;
x86_cpuid(0x80000000, flags.i);
/* Check for additional cpuid attributes availability */
if (flags.u[0] < 0x80000004)
return;
for (i = 0; i < 3; i++)
{
memset(flags.i, 0, sizeof(flags.i));
x86_cpuid(0x80000002 + i, flags.i);
for (j = 0; j < (int)sizeof(flags.s); j++)
{
if (!start && flags.s[j] == ' ')
continue;
else
start = true;
if (pos == len - 1)
{
/* truncate if we ran out of room */
name[pos] = '\0';
goto end;
}
name[pos++] = flags.s[j];
}
}
end:
/* terminate our string */
if (pos < len)
name[pos] = '\0';
#elif defined(__MACH__)
if (!name)
return;
{
size_t len_size = len;
sysctlbyname("machdep.cpu.brand_string", name, &len_size, NULL, 0);
}
#elif defined(__linux__)
if (!name)
return;
{
char *model_name, line[128];
RFILE *fp = filestream_open("/proc/cpuinfo",
RETRO_VFS_FILE_ACCESS_READ,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!fp)
return;
while (filestream_gets(fp, line, sizeof(line)))
{
if (strncmp(line, "model name", 10))
continue;
if ((model_name = strstr(line + 10, ": ")))
{
model_name += 2;
strncpy(name, model_name, len);
name[len - 1] = '\0';
}
break;
}
filestream_close(fp);
}
#else
if (!name)
return;
return;
#endif
}
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