22#include "SDL_config.h"
24#include "../SDL_internal.h"
27#if defined(__WIN32__) || defined(__WINRT__)
28#include "../core/windows/SDL_windows.h"
33#ifndef QSV_NUMPROCESSORS
34#define QSV_NUMPROCESSORS 26
46#ifdef HAVE_SYSCTLBYNAME
48#include <sys/sysctl.h>
50#if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))
51#include <sys/sysctl.h>
52#elif defined(__OpenBSD__) && defined(__powerpc__)
54#include <sys/sysctl.h>
55#include <machine/cpu.h>
56#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
61#if defined(__QNXNTO__)
62#include <sys/syspage.h>
65#if (defined(__LINUX__) || defined(__ANDROID__)) && defined(__ARM_ARCH)
71#define HWCAP_NEON (1 << 12)
73#if defined HAVE_GETAUXVAL
80#if defined(__ANDROID__) && defined(__ARM_ARCH) && !defined(HAVE_GETAUXVAL)
82#include <cpu-features.h>
86#define CPU_HAS_RDTSC (1 << 0)
87#define CPU_HAS_ALTIVEC (1 << 1)
88#define CPU_HAS_MMX (1 << 2)
89#define CPU_HAS_3DNOW (1 << 3)
90#define CPU_HAS_SSE (1 << 4)
91#define CPU_HAS_SSE2 (1 << 5)
92#define CPU_HAS_SSE3 (1 << 6)
93#define CPU_HAS_SSE41 (1 << 7)
94#define CPU_HAS_SSE42 (1 << 8)
95#define CPU_HAS_AVX (1 << 9)
96#define CPU_HAS_AVX2 (1 << 10)
97#define CPU_HAS_NEON (1 << 11)
98#define CPU_HAS_AVX512F (1 << 12)
100#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__ && !__OpenBSD__
104static jmp_buf jmpbuf;
106illegal_instruction(
int sig)
118#ifndef SDL_CPUINFO_DISABLED
119#if defined(__GNUC__) && defined(i386)
121" pushfl # Get original EFLAGS \n"
123" movl %%eax,%%ecx \n"
124" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
125" pushl %%eax # Save new EFLAGS value on stack \n"
126" popfl # Replace current EFLAGS value \n"
127" pushfl # Get new EFLAGS \n"
128" popl %%eax # Store new EFLAGS in EAX \n"
129" xorl %%ecx,%%eax # Can not toggle ID bit, \n"
130" jz 1f # Processor=80486 \n"
131" movl $1,%0 # We have CPUID support \n"
137#elif defined(__GNUC__) && defined(__x86_64__)
141" pushfq # Get original EFLAGS \n"
143" movq %%rax,%%rcx \n"
144" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
145" pushq %%rax # Save new EFLAGS value on stack \n"
146" popfq # Replace current EFLAGS value \n"
147" pushfq # Get new EFLAGS \n"
148" popq %%rax # Store new EFLAGS in EAX \n"
149" xorl %%ecx,%%eax # Can not toggle ID bit, \n"
150" jz 1f # Processor=80486 \n"
151" movl $1,%0 # We have CPUID support \n"
157#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
159 pushfd ; Get original EFLAGS
162 xor eax, 200000
h ; Flip ID bit
in EFLAGS
163 push eax ; Save
new EFLAGS
value on stack
164 popfd ; Replace current EFLAGS
value
165 pushfd ; Get
new EFLAGS
166 pop eax ; Store
new EFLAGS
in EAX
167 xor eax, ecx ; Can not toggle ID bit,
168 jz
done ; Processor=80486
169 mov has_CPUID,1 ; We have CPUID support
172#elif defined(_MSC_VER) && defined(_M_X64)
174#elif defined(__sun) && defined(__i386)
179" xorl $0x200000,%eax \n"
186" movl $1,-8(%ebp) \n"
189#elif defined(__sun) && defined(__amd64)
194" xorl $0x200000,%eax \n"
201" movl $1,-8(%rbp) \n"
210#if defined(__GNUC__) && defined(i386)
211#define cpuid(func, a, b, c, d) \
212 __asm__ __volatile__ ( \
214" xorl %%ecx,%%ecx \n" \
216" movl %%ebx, %%esi \n" \
218 "=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
219#elif defined(__GNUC__) && defined(__x86_64__)
220#define cpuid(func, a, b, c, d) \
221 __asm__ __volatile__ ( \
223" xorq %%rcx,%%rcx \n" \
225" movq %%rbx, %%rsi \n" \
227 "=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
228#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
229#define cpuid(func, a, b, c, d) \
231 __asm mov eax, func \
239#elif defined(_MSC_VER) && defined(_M_X64)
240#define cpuid(func, a, b, c, d) \
243 __cpuid(CPUInfo, func); \
250#define cpuid(func, a, b, c, d) \
251 do { a = b = c = d = 0; (void) a; (void) b; (void) c; (void) d; } while (0)
277 if (
c & 0x08000000) {
279#if defined(__GNUC__) && (defined(i386) || defined(__x86_64__))
280 __asm__(
".byte 0x0f, 0x01, 0xd0" :
"=a" (
a) :
"c" (0) :
"%edx");
281#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) && (_MSC_FULL_VER >= 160040219)
283#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
287 _asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0
302 volatile int altivec = 0;
303#ifndef SDL_CPUINFO_DISABLED
304#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
306 int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
308 int selectors[2] = { CTL_HW, HW_VECTORUNIT };
310 int hasVectorUnit = 0;
311 size_t length =
sizeof(hasVectorUnit);
312 int error = sysctl(selectors, 2, &hasVectorUnit, &
length,
NULL, 0);
314 altivec = (hasVectorUnit != 0);
315#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
316 void (*handler) (
int sig);
317 handler = signal(SIGILL, illegal_instruction);
318 if (setjmp(jmpbuf) == 0) {
319 asm volatile (
"mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::
"r" (-1));
322 signal(SIGILL, handler);
328#if defined(__LINUX__) && defined(__ARM_ARCH) && !defined(HAVE_GETAUXVAL)
330readProcAuxvForNeon(
void)
334 const int fd = open(
"/proc/self/auxv", O_RDONLY);
336 while (read(
fd, kv,
sizeof (kv)) ==
sizeof (kv)) {
337 if (kv[0] == AT_HWCAP) {
338 neon = ((kv[1] & HWCAP_NEON) == HWCAP_NEON);
354#if defined(SDL_CPUINFO_DISABLED)
356#elif (defined(__WINDOWS__) || defined(__WINRT__)) && (defined(_M_ARM) || defined(_M_ARM64))
359# if !defined(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE)
360# define PF_ARM_NEON_INSTRUCTIONS_AVAILABLE 19
363 return IsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE) != 0;
364#elif !defined(__ARM_ARCH)
368#elif defined(__APPLE__) && (__ARM_ARCH >= 7)
371#elif defined(__APPLE__)
373#elif defined(__QNXNTO__)
374 return SYSPAGE_ENTRY(cpuinfo)->flags & ARM_CPU_FLAG_NEON;
375#elif (defined(__LINUX__) || defined(__ANDROID__)) && defined(HAVE_GETAUXVAL)
376 return ((getauxval(AT_HWCAP) & HWCAP_NEON) == HWCAP_NEON);
377#elif defined(__LINUX__)
378 return readProcAuxvForNeon();
379#elif defined(__ANDROID__)
382 AndroidCpuFamily cpu_family = android_getCpuFamily();
383 if (cpu_family == ANDROID_CPU_FAMILY_ARM) {
384 uint64_t cpu_features = android_getCpuFeatures();
385 if ((cpu_features & ANDROID_CPU_ARM_FEATURE_NEON) != 0) {
392#warning SDL_HasNEON is not implemented for this ARM platform. Write me.
403 if (
a >= 0x80000001) {
405 return (
d & 0x80000000);
411#define CPU_haveRDTSC() (CPU_CPUIDFeatures[3] & 0x00000010)
412#define CPU_haveMMX() (CPU_CPUIDFeatures[3] & 0x00800000)
413#define CPU_haveSSE() (CPU_CPUIDFeatures[3] & 0x02000000)
414#define CPU_haveSSE2() (CPU_CPUIDFeatures[3] & 0x04000000)
415#define CPU_haveSSE3() (CPU_CPUIDFeatures[2] & 0x00000001)
416#define CPU_haveSSE41() (CPU_CPUIDFeatures[2] & 0x00080000)
417#define CPU_haveSSE42() (CPU_CPUIDFeatures[2] & 0x00100000)
418#define CPU_haveAVX() (CPU_OSSavesYMM && (CPU_CPUIDFeatures[2] & 0x10000000))
427 return (
b & 0x00000020);
439 return (
b & 0x00010000);
450#ifndef SDL_CPUINFO_DISABLED
451#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
456#ifdef HAVE_SYSCTLBYNAME
465 GetSystemInfo(&info);
471 DosQuerySysInfo(QSV_NUMPROCESSORS, QSV_NUMPROCESSORS,
488 static char SDL_CPUType[13];
490 if (!SDL_CPUType[0]) {
498 SDL_CPUType[
i++] = (char)(
b & 0xff);
b >>= 8;
499 SDL_CPUType[
i++] = (char)(
b & 0xff);
b >>= 8;
500 SDL_CPUType[
i++] = (char)(
b & 0xff);
b >>= 8;
501 SDL_CPUType[
i++] = (char)(
b & 0xff);
503 SDL_CPUType[
i++] = (char)(
d & 0xff);
d >>= 8;
504 SDL_CPUType[
i++] = (char)(
d & 0xff);
d >>= 8;
505 SDL_CPUType[
i++] = (char)(
d & 0xff);
d >>= 8;
506 SDL_CPUType[
i++] = (char)(
d & 0xff);
508 SDL_CPUType[
i++] = (char)(
c & 0xff);
c >>= 8;
509 SDL_CPUType[
i++] = (char)(
c & 0xff);
c >>= 8;
510 SDL_CPUType[
i++] = (char)(
c & 0xff);
c >>= 8;
511 SDL_CPUType[
i++] = (char)(
c & 0xff);
513 if (!SDL_CPUType[0]) {
514 SDL_strlcpy(SDL_CPUType,
"Unknown",
sizeof(SDL_CPUType));
525 static char SDL_CPUName[48];
527 if (!SDL_CPUName[0]) {
534 if (
a >= 0x80000004) {
536 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
537 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
538 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
539 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
540 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
541 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
542 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
543 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
544 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
545 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
546 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
547 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
548 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
549 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
550 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
551 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
553 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
554 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
555 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
556 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
557 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
558 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
559 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
560 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
561 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
562 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
563 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
564 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
565 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
566 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
567 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
568 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
570 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
571 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
572 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
573 SDL_CPUName[
i++] = (char)(
a & 0xff);
a >>= 8;
574 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
575 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
576 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
577 SDL_CPUName[
i++] = (char)(
b & 0xff);
b >>= 8;
578 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
579 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
580 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
581 SDL_CPUName[
i++] = (char)(
c & 0xff);
c >>= 8;
582 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
583 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
584 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
585 SDL_CPUName[
i++] = (char)(
d & 0xff);
d >>= 8;
588 if (!SDL_CPUName[0]) {
589 SDL_strlcpy(SDL_CPUName,
"Unknown",
sizeof(SDL_CPUName));
602 if (
SDL_strcmp(cpuType,
"GenuineIntel") == 0) {
604 return (((
b >> 8) & 0xff) * 8);
605 }
else if (
SDL_strcmp(cpuType,
"AuthenticAMD") == 0) {
679#define CPU_FEATURE_AVAILABLE(f) ((SDL_GetCPUFeatures() & f) ? SDL_TRUE : SDL_FALSE)
764#ifndef SDL_CPUINFO_DISABLED
765#if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
767 SDL_SystemRAM = (int)((
Sint64)sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE) / (1024*1024));
770#ifdef HAVE_SYSCTLBYNAME
772#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
774 int mib[2] = {CTL_HW, HW_REALMEM};
777 int mib[2] = {CTL_HW, HW_PHYSMEM};
780 int mib[2] = {CTL_HW, HW_MEMSIZE};
783 size_t len =
sizeof(memsize);
785 if (sysctl(mib, 2, &memsize, &
len,
NULL, 0) == 0) {
793 stat.dwLength =
sizeof(stat);
794 if (GlobalMemoryStatusEx(&stat)) {
802 DosQuerySysInfo(QSV_TOTPHYSMEM, QSV_TOTPHYSMEM, &sysram, 4);
826 const size_t padding = alignment - (
len % alignment);
827 const size_t padded = (padding != alignment) ? (
len + padding) :
len;
832 retval = ptr +
sizeof (
void *);
834 *(((
void **)
retval) - 1) = ptr;
843 void **realptr = (
void **) ptr;
859 printf(
"CPU name: %s\n", SDL_GetCPUName());
#define SDL_assert(condition)
unsigned long long uint64_t
SDL_bool SDL_HasSSE2(void)
SDL_bool SDL_HasSSE42(void)
static SDL_bool CPU_OSSavesYMM
static int CPU_haveAVX512F(void)
SDL_bool SDL_HasNEON(void)
#define cpuid(func, a, b, c, d)
static Uint32 SDL_SIMDAlignment
static SDL_bool CPU_OSSavesZMM
SDL_bool SDL_HasSSE3(void)
SDL_bool SDL_HasAVX2(void)
SDL_bool SDL_HasSSE41(void)
#define CPU_FEATURE_AVAILABLE(f)
SDL_bool SDL_HasMMX(void)
SDL_bool SDL_HasAltiVec(void)
void * SDL_SIMDAlloc(const size_t len)
Allocate memory in a SIMD-friendly way.
void SDL_SIMDFree(void *ptr)
Deallocate memory obtained from SDL_SIMDAlloc.
static Uint32 SDL_CPUFeatures
size_t SDL_SIMDGetAlignment(void)
Report the alignment this system needs for SIMD allocations.
int SDL_GetSystemRAM(void)
static int CPU_CPUIDMaxFunction
static int CPU_haveCPUID(void)
static const char * SDL_GetCPUType(void)
SDL_bool SDL_HasAVX512F(void)
int SDL_GetCPUCount(void)
static int CPU_have3DNow(void)
SDL_bool SDL_HasAVX(void)
static int CPU_haveAVX2(void)
static void CPU_calcCPUIDFeatures(void)
int SDL_GetCPUCacheLineSize(void)
SDL_bool SDL_HasRDTSC(void)
SDL_bool SDL_HasSSE(void)
static int CPU_haveAltiVec(void)
static Uint32 SDL_GetCPUFeatures(void)
static int CPU_CPUIDFeatures[4]
SDL_bool SDL_Has3DNow(void)
static int CPU_haveNEON(void)
#define SDL_CACHELINE_SIZE
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 void
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 SDL_AssertionHandler void SDL_SpinLock SDL_atomic_t int int return SDL_atomic_t return void void void return void return int return SDL_AudioSpec SDL_AudioSpec return int int return return int SDL_RWops int SDL_AudioSpec Uint8 ** d
GLboolean GLboolean GLboolean b
GLboolean GLboolean GLboolean GLboolean a
GLuint GLsizei GLsizei * length
GLsizei const GLfloat * value
GLfloat GLfloat GLfloat GLfloat h
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)