early-access version 1667
This commit is contained in:
166
externals/SDL/src/cpuinfo/SDL_cpuinfo.c
vendored
166
externals/SDL/src/cpuinfo/SDL_cpuinfo.c
vendored
@@ -1,6 +1,6 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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@@ -63,7 +63,13 @@
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#include <sys/syspage.h>
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#endif
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#if (defined(__LINUX__) || defined(__ANDROID__)) && defined(__ARM_ARCH)
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#if (defined(__LINUX__) || defined(__ANDROID__)) && defined(__arm__)
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <elf.h>
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/*#include <asm/hwcap.h>*/
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#ifndef AT_HWCAP
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#define AT_HWCAP 16
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@@ -71,27 +77,16 @@
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#ifndef AT_PLATFORM
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#define AT_PLATFORM 15
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#endif
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/* Prevent compilation error when including elf.h would also try to define AT_* as an enum */
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#ifndef AT_NULL
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#define AT_NULL 0
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#endif
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#ifndef HWCAP_NEON
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#define HWCAP_NEON (1 << 12)
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#endif
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#if defined HAVE_GETAUXVAL
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#include <sys/auxv.h>
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#else
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#include <fcntl.h>
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#endif
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#endif
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#if defined(__ANDROID__) && defined(__ARM_ARCH) && !defined(HAVE_GETAUXVAL)
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#if __ARM_ARCH < 8
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#if defined(__ANDROID__) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
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#include <cpu-features.h>
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#endif
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#endif
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#if defined(HAVE_ELF_AUX_INFO)
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#if defined(HAVE_GETAUXVAL) || defined(HAVE_ELF_AUX_INFO)
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#include <sys/auxv.h>
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#endif
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@@ -134,7 +129,7 @@ CPU_haveCPUID(void)
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/* *INDENT-OFF* */
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#ifndef SDL_CPUINFO_DISABLED
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#if defined(__GNUC__) && defined(i386)
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#if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
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__asm__ (
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" pushfl # Get original EFLAGS \n"
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" popl %%eax \n"
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@@ -152,7 +147,7 @@ CPU_haveCPUID(void)
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:
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: "%eax", "%ecx"
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);
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#elif defined(__GNUC__) && defined(__x86_64__)
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#elif (defined(__GNUC__) || defined(__llvm__)) && defined(__x86_64__)
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/* Technically, if this is being compiled under __x86_64__ then it has
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CPUid by definition. But it's nice to be able to prove it. :) */
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__asm__ (
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@@ -225,7 +220,7 @@ done:
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return has_CPUID;
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}
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#if defined(__GNUC__) && defined(i386)
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#if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
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#define cpuid(func, a, b, c, d) \
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__asm__ __volatile__ ( \
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" pushl %%ebx \n" \
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@@ -234,7 +229,7 @@ done:
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" movl %%ebx, %%esi \n" \
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" popl %%ebx \n" : \
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"=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
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#elif defined(__GNUC__) && defined(__x86_64__)
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#elif (defined(__GNUC__) || defined(__llvm__)) && defined(__x86_64__)
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#define cpuid(func, a, b, c, d) \
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__asm__ __volatile__ ( \
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" pushq %%rbx \n" \
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@@ -294,7 +289,7 @@ CPU_calcCPUIDFeatures(void)
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/* Check to make sure we can call xgetbv */
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if (c & 0x08000000) {
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/* Call xgetbv to see if YMM (etc) register state is saved */
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#if defined(__GNUC__) && (defined(i386) || defined(__x86_64__))
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#if (defined(__GNUC__) || defined(__llvm__)) && (defined(__i386__) || defined(__x86_64__))
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__asm__(".byte 0x0f, 0x01, 0xd0" : "=a" (a) : "c" (0) : "%edx");
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#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) && (_MSC_FULL_VER >= 160040219) /* VS2010 SP1 */
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a = (int)_xgetbv(0);
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@@ -345,7 +340,7 @@ CPU_haveAltiVec(void)
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return altivec;
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}
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#if defined(__ARM_ARCH) && (__ARM_ARCH >= 6)
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#if (defined(__ARM_ARCH) && (__ARM_ARCH >= 6)) || defined(__aarch64__)
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static int
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CPU_haveARMSIMD(void)
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{
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@@ -360,12 +355,6 @@ CPU_haveARMSIMD(void)
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}
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#elif defined(__LINUX__)
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <elf.h>
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static int
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CPU_haveARMSIMD(void)
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{
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@@ -393,7 +382,6 @@ CPU_haveARMSIMD(void)
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}
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#elif defined(__RISCOS__)
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static int
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CPU_haveARMSIMD(void)
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{
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@@ -422,17 +410,20 @@ CPU_haveARMSIMD(void)
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}
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#endif
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#if defined(__LINUX__) && defined(__ARM_ARCH) && !defined(HAVE_GETAUXVAL)
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#if defined(__LINUX__) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
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static int
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readProcAuxvForNeon(void)
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{
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int neon = 0;
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int kv[2];
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const int fd = open("/proc/self/auxv", O_RDONLY);
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if (fd != -1) {
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while (read(fd, kv, sizeof (kv)) == sizeof (kv)) {
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if (kv[0] == AT_HWCAP) {
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neon = ((kv[1] & HWCAP_NEON) == HWCAP_NEON);
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int fd;
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fd = open("/proc/self/auxv", O_RDONLY);
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if (fd >= 0)
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{
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Elf32_auxv_t aux;
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while (read(fd, &aux, sizeof (aux)) == sizeof (aux)) {
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if (aux.a_type == AT_HWCAP) {
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neon = (aux.a_un.a_val & HWCAP_NEON) == HWCAP_NEON;
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break;
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}
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}
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@@ -457,22 +448,24 @@ CPU_haveNEON(void)
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# endif
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/* All WinRT ARM devices are required to support NEON, but just in case. */
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return IsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE) != 0;
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#elif defined(__ARM_ARCH) && (__ARM_ARCH >= 8)
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#elif (defined(__ARM_ARCH) && (__ARM_ARCH >= 8)) || defined(__aarch64__)
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return 1; /* ARMv8 always has non-optional NEON support. */
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#elif __VITA__
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return 1;
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#elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7)
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/* (note that sysctlbyname("hw.optional.neon") doesn't work!) */
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return 1; /* all Apple ARMv7 chips and later have NEON. */
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#elif defined(__APPLE__)
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return 0; /* assume anything else from Apple doesn't have NEON. */
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#elif !defined(__arm__)
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return 0; /* not an ARM CPU at all. */
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#elif defined(__OpenBSD__)
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return 1; /* OpenBSD only supports ARMv7 CPUs that have NEON. */
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#elif defined(HAVE_ELF_AUX_INFO) && defined(HWCAP_NEON)
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#elif defined(HAVE_ELF_AUX_INFO)
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unsigned long hasneon = 0;
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if (elf_aux_info(AT_HWCAP, (void *)&hasneon, (int)sizeof(hasneon)) != 0)
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return 0;
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return ((hasneon & HWCAP_NEON) == HWCAP_NEON);
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#elif !defined(__arm__)
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return 0; /* not an ARM CPU at all. */
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#elif defined(__QNXNTO__)
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return SYSPAGE_ENTRY(cpuinfo)->flags & ARM_CPU_FLAG_NEON;
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#elif (defined(__LINUX__) || defined(__ANDROID__)) && defined(HAVE_GETAUXVAL)
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@@ -509,6 +502,17 @@ CPU_haveNEON(void)
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#endif
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}
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#if defined(__e2k__)
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inline int
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CPU_have3DNow(void)
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{
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#if defined(__3dNOW__)
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return 1;
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#else
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return 0;
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#endif
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}
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#else
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static int
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CPU_have3DNow(void)
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{
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@@ -522,7 +526,46 @@ CPU_have3DNow(void)
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}
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return 0;
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}
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#endif
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#if defined(__e2k__)
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#define CPU_haveRDTSC() (0)
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#if defined(__MMX__)
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#define CPU_haveMMX() (1)
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#else
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#define CPU_haveMMX() (0)
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#endif
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#if defined(__SSE__)
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#define CPU_haveSSE() (1)
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#else
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#define CPU_haveSSE() (0)
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#endif
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#if defined(__SSE2__)
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#define CPU_haveSSE2() (1)
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#else
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#define CPU_haveSSE2() (0)
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#endif
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#if defined(__SSE3__)
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#define CPU_haveSSE3() (1)
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#else
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#define CPU_haveSSE3() (0)
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#endif
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#if defined(__SSE4_1__)
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#define CPU_haveSSE41() (1)
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#else
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#define CPU_haveSSE41() (0)
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#endif
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#if defined(__SSE4_2__)
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#define CPU_haveSSE42() (1)
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#else
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#define CPU_haveSSE42() (0)
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#endif
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#if defined(__AVX__)
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#define CPU_haveAVX() (1)
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#else
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#define CPU_haveAVX() (0)
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#endif
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#else
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#define CPU_haveRDTSC() (CPU_CPUIDFeatures[3] & 0x00000010)
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#define CPU_haveMMX() (CPU_CPUIDFeatures[3] & 0x00800000)
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#define CPU_haveSSE() (CPU_CPUIDFeatures[3] & 0x02000000)
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@@ -531,7 +574,19 @@ CPU_have3DNow(void)
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#define CPU_haveSSE41() (CPU_CPUIDFeatures[2] & 0x00080000)
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#define CPU_haveSSE42() (CPU_CPUIDFeatures[2] & 0x00100000)
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#define CPU_haveAVX() (CPU_OSSavesYMM && (CPU_CPUIDFeatures[2] & 0x10000000))
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#endif
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#if defined(__e2k__)
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inline int
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CPU_haveAVX2(void)
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{
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#if defined(__AVX2__)
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return 1;
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#else
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return 0;
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#endif
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}
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#else
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static int
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CPU_haveAVX2(void)
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{
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@@ -543,7 +598,15 @@ CPU_haveAVX2(void)
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}
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return 0;
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}
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#endif
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#if defined(__e2k__)
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inline int
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CPU_haveAVX512F(void)
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{
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return 0;
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}
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#else
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static int
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CPU_haveAVX512F(void)
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{
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@@ -555,6 +618,7 @@ CPU_haveAVX512F(void)
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}
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return 0;
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}
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#endif
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static int SDL_CPUCount = 0;
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@@ -596,6 +660,17 @@ SDL_GetCPUCount(void)
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return SDL_CPUCount;
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}
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#if defined(__e2k__)
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inline const char *
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SDL_GetCPUType(void)
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{
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static char SDL_CPUType[13];
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SDL_strlcpy(SDL_CPUType, "E2K MACHINE", sizeof(SDL_CPUType));
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return SDL_CPUType;
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}
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#else
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/* Oh, such a sweet sweet trick, just not very useful. :) */
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static const char *
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SDL_GetCPUType(void)
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@@ -631,9 +706,21 @@ SDL_GetCPUType(void)
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}
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return SDL_CPUType;
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}
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#endif
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#ifdef TEST_MAIN /* !!! FIXME: only used for test at the moment. */
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#if defined(__e2k__)
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inline const char *
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SDL_GetCPUName(void)
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{
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static char SDL_CPUName[48];
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SDL_strlcpy(SDL_CPUName, __builtin_cpu_name(), sizeof(SDL_CPUName));
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return SDL_CPUName;
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}
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#else
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static const char *
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SDL_GetCPUName(void)
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{
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@@ -707,6 +794,7 @@ SDL_GetCPUName(void)
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return SDL_CPUName;
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}
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#endif
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#endif
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int
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SDL_GetCPUCacheLineSize(void)
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