diff options
Diffstat (limited to '3rdparty/SDL2/src/cpuinfo/SDL_cpuinfo.c')
-rw-r--r-- | 3rdparty/SDL2/src/cpuinfo/SDL_cpuinfo.c | 799 |
1 files changed, 0 insertions, 799 deletions
diff --git a/3rdparty/SDL2/src/cpuinfo/SDL_cpuinfo.c b/3rdparty/SDL2/src/cpuinfo/SDL_cpuinfo.c deleted file mode 100644 index c4c55be399d..00000000000 --- a/3rdparty/SDL2/src/cpuinfo/SDL_cpuinfo.c +++ /dev/null @@ -1,799 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#ifdef TEST_MAIN -#include "SDL_config.h" -#else -#include "../SDL_internal.h" -#endif - -#if defined(__WIN32__) -#include "../core/windows/SDL_windows.h" -#endif - -/* CPU feature detection for SDL */ - -#include "SDL_cpuinfo.h" - -#ifdef HAVE_SYSCONF -#include <unistd.h> -#endif -#ifdef HAVE_SYSCTLBYNAME -#include <sys/types.h> -#include <sys/sysctl.h> -#endif -#if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__)) -#include <sys/sysctl.h> /* For AltiVec check */ -#elif defined(__OpenBSD__) && defined(__powerpc__) -#include <sys/param.h> -#include <sys/sysctl.h> /* For AltiVec check */ -#include <machine/cpu.h> -#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP -#include <signal.h> -#include <setjmp.h> -#endif - -#define CPU_HAS_RDTSC 0x00000001 -#define CPU_HAS_ALTIVEC 0x00000002 -#define CPU_HAS_MMX 0x00000004 -#define CPU_HAS_3DNOW 0x00000008 -#define CPU_HAS_SSE 0x00000010 -#define CPU_HAS_SSE2 0x00000020 -#define CPU_HAS_SSE3 0x00000040 -#define CPU_HAS_SSE41 0x00000100 -#define CPU_HAS_SSE42 0x00000200 -#define CPU_HAS_AVX 0x00000400 -#define CPU_HAS_AVX2 0x00000800 - -#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__ && !__OpenBSD__ -/* This is the brute force way of detecting instruction sets... - the idea is borrowed from the libmpeg2 library - thanks! - */ -static jmp_buf jmpbuf; -static void -illegal_instruction(int sig) -{ - longjmp(jmpbuf, 1); -} -#endif /* HAVE_SETJMP */ - -static int -CPU_haveCPUID(void) -{ - int has_CPUID = 0; -/* *INDENT-OFF* */ -#ifndef SDL_CPUINFO_DISABLED -#if defined(__GNUC__) && defined(i386) - __asm__ ( -" pushfl # Get original EFLAGS \n" -" popl %%eax \n" -" movl %%eax,%%ecx \n" -" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n" -" pushl %%eax # Save new EFLAGS value on stack \n" -" popfl # Replace current EFLAGS value \n" -" pushfl # Get new EFLAGS \n" -" popl %%eax # Store new EFLAGS in EAX \n" -" xorl %%ecx,%%eax # Can not toggle ID bit, \n" -" jz 1f # Processor=80486 \n" -" movl $1,%0 # We have CPUID support \n" -"1: \n" - : "=m" (has_CPUID) - : - : "%eax", "%ecx" - ); -#elif defined(__GNUC__) && defined(__x86_64__) -/* Technically, if this is being compiled under __x86_64__ then it has - CPUid by definition. But it's nice to be able to prove it. :) */ - __asm__ ( -" pushfq # Get original EFLAGS \n" -" popq %%rax \n" -" movq %%rax,%%rcx \n" -" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n" -" pushq %%rax # Save new EFLAGS value on stack \n" -" popfq # Replace current EFLAGS value \n" -" pushfq # Get new EFLAGS \n" -" popq %%rax # Store new EFLAGS in EAX \n" -" xorl %%ecx,%%eax # Can not toggle ID bit, \n" -" jz 1f # Processor=80486 \n" -" movl $1,%0 # We have CPUID support \n" -"1: \n" - : "=m" (has_CPUID) - : - : "%rax", "%rcx" - ); -#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) - __asm { - pushfd ; Get original EFLAGS - pop eax - mov ecx, eax - xor eax, 200000h ; Flip ID bit in EFLAGS - push eax ; Save new EFLAGS value on stack - popfd ; Replace current EFLAGS value - pushfd ; Get new EFLAGS - pop eax ; Store new EFLAGS in EAX - xor eax, ecx ; Can not toggle ID bit, - jz done ; Processor=80486 - mov has_CPUID,1 ; We have CPUID support -done: - } -#elif defined(_MSC_VER) && defined(_M_X64) - has_CPUID = 1; -#elif defined(__sun) && defined(__i386) - __asm ( -" pushfl \n" -" popl %eax \n" -" movl %eax,%ecx \n" -" xorl $0x200000,%eax \n" -" pushl %eax \n" -" popfl \n" -" pushfl \n" -" popl %eax \n" -" xorl %ecx,%eax \n" -" jz 1f \n" -" movl $1,-8(%ebp) \n" -"1: \n" - ); -#elif defined(__sun) && defined(__amd64) - __asm ( -" pushfq \n" -" popq %rax \n" -" movq %rax,%rcx \n" -" xorl $0x200000,%eax \n" -" pushq %rax \n" -" popfq \n" -" pushfq \n" -" popq %rax \n" -" xorl %ecx,%eax \n" -" jz 1f \n" -" movl $1,-8(%rbp) \n" -"1: \n" - ); -#endif -#endif -/* *INDENT-ON* */ - return has_CPUID; -} - -#if defined(__GNUC__) && defined(i386) -#define cpuid(func, a, b, c, d) \ - __asm__ __volatile__ ( \ -" pushl %%ebx \n" \ -" xorl %%ecx,%%ecx \n" \ -" cpuid \n" \ -" movl %%ebx, %%esi \n" \ -" popl %%ebx \n" : \ - "=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func)) -#elif defined(__GNUC__) && defined(__x86_64__) -#define cpuid(func, a, b, c, d) \ - __asm__ __volatile__ ( \ -" pushq %%rbx \n" \ -" xorq %%rcx,%%rcx \n" \ -" cpuid \n" \ -" movq %%rbx, %%rsi \n" \ -" popq %%rbx \n" : \ - "=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func)) -#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) -#define cpuid(func, a, b, c, d) \ - __asm { \ - __asm mov eax, func \ - __asm xor ecx, ecx \ - __asm cpuid \ - __asm mov a, eax \ - __asm mov b, ebx \ - __asm mov c, ecx \ - __asm mov d, edx \ -} -#elif defined(_MSC_VER) && defined(_M_X64) -#define cpuid(func, a, b, c, d) \ -{ \ - int CPUInfo[4]; \ - __cpuid(CPUInfo, func); \ - a = CPUInfo[0]; \ - b = CPUInfo[1]; \ - c = CPUInfo[2]; \ - d = CPUInfo[3]; \ -} -#else -#define cpuid(func, a, b, c, d) \ - a = b = c = d = 0 -#endif - -static int -CPU_getCPUIDFeatures(void) -{ - int features = 0; - int a, b, c, d; - - cpuid(0, a, b, c, d); - if (a >= 1) { - cpuid(1, a, b, c, d); - features = d; - } - return features; -} - -static SDL_bool -CPU_OSSavesYMM(void) -{ - int a, b, c, d; - - /* Check to make sure we can call xgetbv */ - cpuid(0, a, b, c, d); - if (a < 1) { - return SDL_FALSE; - } - cpuid(1, a, b, c, d); - if (!(c & 0x08000000)) { - return SDL_FALSE; - } - - /* Call xgetbv to see if YMM register state is saved */ - a = 0; -#if defined(__GNUC__) && (defined(i386) || defined(__x86_64__)) - asm(".byte 0x0f, 0x01, 0xd0" : "=a" (a) : "c" (0) : "%edx"); -#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) && (_MSC_FULL_VER >= 160040219) /* VS2010 SP1 */ - a = (int)_xgetbv(0); -#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) - __asm - { - xor ecx, ecx - _asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0 - mov a, eax - } -#endif - return ((a & 6) == 6) ? SDL_TRUE : SDL_FALSE; -} - -static int -CPU_haveRDTSC(void) -{ - if (CPU_haveCPUID()) { - return (CPU_getCPUIDFeatures() & 0x00000010); - } - return 0; -} - -static int -CPU_haveAltiVec(void) -{ - volatile int altivec = 0; -#ifndef SDL_CPUINFO_DISABLED -#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__)) -#ifdef __OpenBSD__ - int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC }; -#else - int selectors[2] = { CTL_HW, HW_VECTORUNIT }; -#endif - int hasVectorUnit = 0; - size_t length = sizeof(hasVectorUnit); - int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0); - if (0 == error) - altivec = (hasVectorUnit != 0); -#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP - void (*handler) (int sig); - handler = signal(SIGILL, illegal_instruction); - if (setjmp(jmpbuf) == 0) { - asm volatile ("mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::"r" (-1)); - altivec = 1; - } - signal(SIGILL, handler); -#endif -#endif - return altivec; -} - -static int -CPU_haveMMX(void) -{ - if (CPU_haveCPUID()) { - return (CPU_getCPUIDFeatures() & 0x00800000); - } - return 0; -} - -static int -CPU_have3DNow(void) -{ - if (CPU_haveCPUID()) { - int a, b, c, d; - - cpuid(0x80000000, a, b, c, d); - if (a >= 0x80000001) { - cpuid(0x80000001, a, b, c, d); - return (d & 0x80000000); - } - } - return 0; -} - -static int -CPU_haveSSE(void) -{ - if (CPU_haveCPUID()) { - return (CPU_getCPUIDFeatures() & 0x02000000); - } - return 0; -} - -static int -CPU_haveSSE2(void) -{ - if (CPU_haveCPUID()) { - return (CPU_getCPUIDFeatures() & 0x04000000); - } - return 0; -} - -static int -CPU_haveSSE3(void) -{ - if (CPU_haveCPUID()) { - int a, b, c, d; - - cpuid(0, a, b, c, d); - if (a >= 1) { - cpuid(1, a, b, c, d); - return (c & 0x00000001); - } - } - return 0; -} - -static int -CPU_haveSSE41(void) -{ - if (CPU_haveCPUID()) { - int a, b, c, d; - - cpuid(0, a, b, c, d); - if (a >= 1) { - cpuid(1, a, b, c, d); - return (c & 0x00080000); - } - } - return 0; -} - -static int -CPU_haveSSE42(void) -{ - if (CPU_haveCPUID()) { - int a, b, c, d; - - cpuid(0, a, b, c, d); - if (a >= 1) { - cpuid(1, a, b, c, d); - return (c & 0x00100000); - } - } - return 0; -} - -static int -CPU_haveAVX(void) -{ - if (CPU_haveCPUID() && CPU_OSSavesYMM()) { - int a, b, c, d; - - cpuid(0, a, b, c, d); - if (a >= 1) { - cpuid(1, a, b, c, d); - return (c & 0x10000000); - } - } - return 0; -} - -static int -CPU_haveAVX2(void) -{ - if (CPU_haveCPUID() && CPU_OSSavesYMM()) { - int a, b, c, d; - - cpuid(0, a, b, c, d); - if (a >= 7) { - cpuid(7, a, b, c, d); - return (b & 0x00000020); - } - } - return 0; -} - -static int SDL_CPUCount = 0; - -int -SDL_GetCPUCount(void) -{ - if (!SDL_CPUCount) { -#ifndef SDL_CPUINFO_DISABLED -#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN) - if (SDL_CPUCount <= 0) { - SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN); - } -#endif -#ifdef HAVE_SYSCTLBYNAME - if (SDL_CPUCount <= 0) { - size_t size = sizeof(SDL_CPUCount); - sysctlbyname("hw.ncpu", &SDL_CPUCount, &size, NULL, 0); - } -#endif -#ifdef __WIN32__ - if (SDL_CPUCount <= 0) { - SYSTEM_INFO info; - GetSystemInfo(&info); - SDL_CPUCount = info.dwNumberOfProcessors; - } -#endif -#endif - /* There has to be at least 1, right? :) */ - if (SDL_CPUCount <= 0) { - SDL_CPUCount = 1; - } - } - return SDL_CPUCount; -} - -/* Oh, such a sweet sweet trick, just not very useful. :) */ -static const char * -SDL_GetCPUType(void) -{ - static char SDL_CPUType[13]; - - if (!SDL_CPUType[0]) { - int i = 0; - - if (CPU_haveCPUID()) { - int a, b, c, d; - cpuid(0x00000000, a, b, c, d); - (void) a; - SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUType[i++] = (char)(b & 0xff); - - SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUType[i++] = (char)(d & 0xff); - - SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUType[i++] = (char)(c & 0xff); - } - if (!SDL_CPUType[0]) { - SDL_strlcpy(SDL_CPUType, "Unknown", sizeof(SDL_CPUType)); - } - } - return SDL_CPUType; -} - - -#ifdef TEST_MAIN /* !!! FIXME: only used for test at the moment. */ -static const char * -SDL_GetCPUName(void) -{ - static char SDL_CPUName[48]; - - if (!SDL_CPUName[0]) { - int i = 0; - int a, b, c, d; - - if (CPU_haveCPUID()) { - cpuid(0x80000000, a, b, c, d); - if (a >= 0x80000004) { - cpuid(0x80000002, a, b, c, d); - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - cpuid(0x80000003, a, b, c, d); - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - cpuid(0x80000004, a, b, c, d); - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8; - } - } - if (!SDL_CPUName[0]) { - SDL_strlcpy(SDL_CPUName, "Unknown", sizeof(SDL_CPUName)); - } - } - return SDL_CPUName; -} -#endif - -int -SDL_GetCPUCacheLineSize(void) -{ - const char *cpuType = SDL_GetCPUType(); - int a, b, c, d; - (void) a; (void) b; (void) c; (void) d; - if (SDL_strcmp(cpuType, "GenuineIntel") == 0) { - cpuid(0x00000001, a, b, c, d); - return (((b >> 8) & 0xff) * 8); - } else if (SDL_strcmp(cpuType, "AuthenticAMD") == 0) { - cpuid(0x80000005, a, b, c, d); - return (c & 0xff); - } else { - /* Just make a guess here... */ - return SDL_CACHELINE_SIZE; - } -} - -static Uint32 SDL_CPUFeatures = 0xFFFFFFFF; - -static Uint32 -SDL_GetCPUFeatures(void) -{ - if (SDL_CPUFeatures == 0xFFFFFFFF) { - SDL_CPUFeatures = 0; - if (CPU_haveRDTSC()) { - SDL_CPUFeatures |= CPU_HAS_RDTSC; - } - if (CPU_haveAltiVec()) { - SDL_CPUFeatures |= CPU_HAS_ALTIVEC; - } - if (CPU_haveMMX()) { - SDL_CPUFeatures |= CPU_HAS_MMX; - } - if (CPU_have3DNow()) { - SDL_CPUFeatures |= CPU_HAS_3DNOW; - } - if (CPU_haveSSE()) { - SDL_CPUFeatures |= CPU_HAS_SSE; - } - if (CPU_haveSSE2()) { - SDL_CPUFeatures |= CPU_HAS_SSE2; - } - if (CPU_haveSSE3()) { - SDL_CPUFeatures |= CPU_HAS_SSE3; - } - if (CPU_haveSSE41()) { - SDL_CPUFeatures |= CPU_HAS_SSE41; - } - if (CPU_haveSSE42()) { - SDL_CPUFeatures |= CPU_HAS_SSE42; - } - if (CPU_haveAVX()) { - SDL_CPUFeatures |= CPU_HAS_AVX; - } - if (CPU_haveAVX2()) { - SDL_CPUFeatures |= CPU_HAS_AVX2; - } - } - return SDL_CPUFeatures; -} - -SDL_bool -SDL_HasRDTSC(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_RDTSC) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasAltiVec(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasMMX(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_MMX) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_Has3DNow(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_3DNOW) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasSSE(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_SSE) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasSSE2(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_SSE2) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasSSE3(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_SSE3) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasSSE41(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_SSE41) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasSSE42(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_SSE42) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasAVX(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_AVX) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -SDL_bool -SDL_HasAVX2(void) -{ - if (SDL_GetCPUFeatures() & CPU_HAS_AVX2) { - return SDL_TRUE; - } - return SDL_FALSE; -} - -static int SDL_SystemRAM = 0; - -int -SDL_GetSystemRAM(void) -{ - if (!SDL_SystemRAM) { -#ifndef SDL_CPUINFO_DISABLED -#if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE) - if (SDL_SystemRAM <= 0) { - SDL_SystemRAM = (int)((Sint64)sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE) / (1024*1024)); - } -#endif -#ifdef HAVE_SYSCTLBYNAME - if (SDL_SystemRAM <= 0) { -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) -#ifdef HW_REALMEM - int mib[2] = {CTL_HW, HW_REALMEM}; -#else - /* might only report up to 2 GiB */ - int mib[2] = {CTL_HW, HW_PHYSMEM}; -#endif /* HW_REALMEM */ -#else - int mib[2] = {CTL_HW, HW_MEMSIZE}; -#endif /* __FreeBSD__ || __FreeBSD_kernel__ */ - Uint64 memsize = 0; - size_t len = sizeof(memsize); - - if (sysctl(mib, 2, &memsize, &len, NULL, 0) == 0) { - SDL_SystemRAM = (int)(memsize / (1024*1024)); - } - } -#endif -#ifdef __WIN32__ - if (SDL_SystemRAM <= 0) { - MEMORYSTATUSEX stat; - stat.dwLength = sizeof(stat); - if (GlobalMemoryStatusEx(&stat)) { - SDL_SystemRAM = (int)(stat.ullTotalPhys / (1024 * 1024)); - } - } -#endif -#endif - } - return SDL_SystemRAM; -} - - -#ifdef TEST_MAIN - -#include <stdio.h> - -int -main() -{ - printf("CPU count: %d\n", SDL_GetCPUCount()); - printf("CPU type: %s\n", SDL_GetCPUType()); - printf("CPU name: %s\n", SDL_GetCPUName()); - printf("CacheLine size: %d\n", SDL_GetCPUCacheLineSize()); - printf("RDTSC: %d\n", SDL_HasRDTSC()); - printf("Altivec: %d\n", SDL_HasAltiVec()); - printf("MMX: %d\n", SDL_HasMMX()); - printf("3DNow: %d\n", SDL_Has3DNow()); - printf("SSE: %d\n", SDL_HasSSE()); - printf("SSE2: %d\n", SDL_HasSSE2()); - printf("SSE3: %d\n", SDL_HasSSE3()); - printf("SSE4.1: %d\n", SDL_HasSSE41()); - printf("SSE4.2: %d\n", SDL_HasSSE42()); - printf("AVX: %d\n", SDL_HasAVX()); - printf("AVX2: %d\n", SDL_HasAVX2()); - printf("RAM: %d MB\n", SDL_GetSystemRAM()); - return 0; -} - -#endif /* TEST_MAIN */ - -/* vi: set ts=4 sw=4 expandtab: */ |