diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_cpu_detect.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.c | 458 |
1 files changed, 0 insertions, 458 deletions
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c deleted file mode 100644 index 0b4b83aa..00000000 --- a/src/gallium/auxiliary/util/u_cpu_detect.c +++ /dev/null @@ -1,458 +0,0 @@ -/************************************************************************** - * - * Copyright 2008 Dennis Smit - * All Rights Reserved. - * - * 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 - * on the rights to use, copy, modify, merge, publish, distribute, sub - * license, 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 (including the next - * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL - * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS 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. - * - **************************************************************************/ - -/** - * @file - * CPU feature detection. - * - * @author Dennis Smit - * @author Based on the work of Eric Anholt <anholt@FreeBSD.org> - */ - -#include "pipe/p_config.h" - -#include "u_debug.h" -#include "u_cpu_detect.h" - -#if defined(PIPE_ARCH_PPC) -#if defined(PIPE_OS_APPLE) -#include <sys/sysctl.h> -#else -#include <signal.h> -#include <setjmp.h> -#endif -#endif - -#if defined(PIPE_OS_NETBSD) || defined(PIPE_OS_OPENBSD) -#include <sys/param.h> -#include <sys/sysctl.h> -#include <machine/cpu.h> -#endif - -#if defined(PIPE_OS_FREEBSD) -#include <sys/types.h> -#include <sys/sysctl.h> -#endif - -#if defined(PIPE_OS_LINUX) -#include <signal.h> -#endif - -#ifdef PIPE_OS_UNIX -#include <unistd.h> -#endif - -#if defined(PIPE_OS_WINDOWS) -#include <windows.h> -#if defined(PIPE_CC_MSVC) -#include <intrin.h> -#endif -#endif - - -#ifdef DEBUG -DEBUG_GET_ONCE_BOOL_OPTION(dump_cpu, "GALLIUM_DUMP_CPU", FALSE) -#endif - - -struct util_cpu_caps util_cpu_caps; - -#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64) -static int has_cpuid(void); -#endif - - -#if defined(PIPE_ARCH_PPC) && !defined(PIPE_OS_APPLE) -static jmp_buf __lv_powerpc_jmpbuf; -static volatile sig_atomic_t __lv_powerpc_canjump = 0; - -static void -sigill_handler(int sig) -{ - if (!__lv_powerpc_canjump) { - signal (sig, SIG_DFL); - raise (sig); - } - - __lv_powerpc_canjump = 0; - longjmp(__lv_powerpc_jmpbuf, 1); -} -#endif - -#if defined(PIPE_ARCH_PPC) -static void -check_os_altivec_support(void) -{ -#if defined(PIPE_OS_APPLE) - int sels[2] = {CTL_HW, HW_VECTORUNIT}; - int has_vu = 0; - int len = sizeof (has_vu); - int err; - - err = sysctl(sels, 2, &has_vu, &len, NULL, 0); - - if (err == 0) { - if (has_vu != 0) { - util_cpu_caps.has_altivec = 1; - } - } -#else /* !PIPE_OS_APPLE */ - /* not on Apple/Darwin, do it the brute-force way */ - /* this is borrowed from the libmpeg2 library */ - signal(SIGILL, sigill_handler); - if (setjmp(__lv_powerpc_jmpbuf)) { - signal(SIGILL, SIG_DFL); - } else { - __lv_powerpc_canjump = 1; - - __asm __volatile - ("mtspr 256, %0\n\t" - "vand %%v0, %%v0, %%v0" - : - : "r" (-1)); - - signal(SIGILL, SIG_DFL); - util_cpu_caps.has_altivec = 1; - } -#endif /* !PIPE_OS_APPLE */ -} -#endif /* PIPE_ARCH_PPC */ - - -#if defined(PIPE_ARCH_X86) || defined (PIPE_ARCH_X86_64) -static int has_cpuid(void) -{ -#if defined(PIPE_ARCH_X86) -#if defined(PIPE_OS_GCC) - int a, c; - - __asm __volatile - ("pushf\n" - "popl %0\n" - "movl %0, %1\n" - "xorl $0x200000, %0\n" - "push %0\n" - "popf\n" - "pushf\n" - "popl %0\n" - : "=a" (a), "=c" (c) - : - : "cc"); - - return a != c; -#else - /* FIXME */ - return 1; -#endif -#elif defined(PIPE_ARCH_X86_64) - return 1; -#else - return 0; -#endif -} - - -/** - * @sa cpuid.h included in gcc-4.3 onwards. - * @sa http://msdn.microsoft.com/en-us/library/hskdteyh.aspx - */ -static inline void -cpuid(uint32_t ax, uint32_t *p) -{ -#if (defined(PIPE_CC_GCC) || defined(PIPE_CC_SUNPRO)) && defined(PIPE_ARCH_X86) - __asm __volatile ( - "xchgl %%ebx, %1\n\t" - "cpuid\n\t" - "xchgl %%ebx, %1" - : "=a" (p[0]), - "=S" (p[1]), - "=c" (p[2]), - "=d" (p[3]) - : "0" (ax) - ); -#elif (defined(PIPE_CC_GCC) || defined(PIPE_CC_SUNPRO)) && defined(PIPE_ARCH_X86_64) - __asm __volatile ( - "cpuid\n\t" - : "=a" (p[0]), - "=b" (p[1]), - "=c" (p[2]), - "=d" (p[3]) - : "0" (ax) - ); -#elif defined(PIPE_CC_MSVC) - __cpuid(p, ax); -#else - p[0] = 0; - p[1] = 0; - p[2] = 0; - p[3] = 0; -#endif -} - -/** - * @sa cpuid.h included in gcc-4.4 onwards. - * @sa http://msdn.microsoft.com/en-us/library/hskdteyh%28v=vs.90%29.aspx - */ -static inline void -cpuid_count(uint32_t ax, uint32_t cx, uint32_t *p) -{ -#if (defined(PIPE_CC_GCC) || defined(PIPE_CC_SUNPRO)) && defined(PIPE_ARCH_X86) - __asm __volatile ( - "xchgl %%ebx, %1\n\t" - "cpuid\n\t" - "xchgl %%ebx, %1" - : "=a" (p[0]), - "=S" (p[1]), - "=c" (p[2]), - "=d" (p[3]) - : "0" (ax), "2" (cx) - ); -#elif (defined(PIPE_CC_GCC) || defined(PIPE_CC_SUNPRO)) && defined(PIPE_ARCH_X86_64) - __asm __volatile ( - "cpuid\n\t" - : "=a" (p[0]), - "=b" (p[1]), - "=c" (p[2]), - "=d" (p[3]) - : "0" (ax), "2" (cx) - ); -#elif defined(PIPE_CC_MSVC) - __cpuidex(p, ax, cx); -#else - p[0] = 0; - p[1] = 0; - p[2] = 0; - p[3] = 0; -#endif -} - - -static inline uint64_t xgetbv(void) -{ -#if defined(PIPE_CC_GCC) - uint32_t eax, edx; - - __asm __volatile ( - ".byte 0x0f, 0x01, 0xd0" // xgetbv isn't supported on gcc < 4.4 - : "=a"(eax), - "=d"(edx) - : "c"(0) - ); - - return ((uint64_t)edx << 32) | eax; -#elif defined(PIPE_CC_MSVC) && defined(_MSC_FULL_VER) && defined(_XCR_XFEATURE_ENABLED_MASK) - return _xgetbv(_XCR_XFEATURE_ENABLED_MASK); -#else - return 0; -#endif -} - - -#if defined(PIPE_ARCH_X86) -static inline boolean sse2_has_daz(void) -{ - struct { - uint32_t pad1[7]; - uint32_t mxcsr_mask; - uint32_t pad2[128-8]; - } PIPE_ALIGN_VAR(16) fxarea; - - fxarea.mxcsr_mask = 0; -#if (defined(PIPE_CC_GCC) || defined(PIPE_CC_SUNPRO)) - __asm __volatile ("fxsave %0" : "+m" (fxarea)); -#elif (defined(PIPE_CC_MSVC) && _MSC_VER >= 1700) || defined(PIPE_CC_ICL) - /* 1700 = Visual Studio 2012 */ - _fxsave(&fxarea); -#else - fxarea.mxcsr_mask = 0; -#endif - return !!(fxarea.mxcsr_mask & (1 << 6)); -} -#endif - -#endif /* X86 or X86_64 */ - -void -util_cpu_detect(void) -{ - static boolean util_cpu_detect_initialized = FALSE; - - if(util_cpu_detect_initialized) - return; - - memset(&util_cpu_caps, 0, sizeof util_cpu_caps); - - /* Count the number of CPUs in system */ -#if defined(PIPE_OS_WINDOWS) - { - SYSTEM_INFO system_info; - GetSystemInfo(&system_info); - util_cpu_caps.nr_cpus = system_info.dwNumberOfProcessors; - } -#elif defined(PIPE_OS_UNIX) && defined(_SC_NPROCESSORS_ONLN) - util_cpu_caps.nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); - if (util_cpu_caps.nr_cpus == -1) - util_cpu_caps.nr_cpus = 1; -#elif defined(PIPE_OS_BSD) - { - int mib[2], ncpu; - int len; - - mib[0] = CTL_HW; - mib[1] = HW_NCPU; - - len = sizeof (ncpu); - sysctl(mib, 2, &ncpu, &len, NULL, 0); - util_cpu_caps.nr_cpus = ncpu; - } -#else - util_cpu_caps.nr_cpus = 1; -#endif - - /* Make the fallback cacheline size nonzero so that it can be - * safely passed to align(). - */ - util_cpu_caps.cacheline = sizeof(void *); - -#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64) - if (has_cpuid()) { - uint32_t regs[4]; - uint32_t regs2[4]; - - util_cpu_caps.cacheline = 32; - - /* Get max cpuid level */ - cpuid(0x00000000, regs); - - if (regs[0] >= 0x00000001) { - unsigned int cacheline; - - cpuid (0x00000001, regs2); - - util_cpu_caps.x86_cpu_type = (regs2[0] >> 8) & 0xf; - if (util_cpu_caps.x86_cpu_type == 0xf) - util_cpu_caps.x86_cpu_type = 8 + ((regs2[0] >> 20) & 255); /* use extended family (P4, IA64) */ - - /* general feature flags */ - util_cpu_caps.has_tsc = (regs2[3] >> 4) & 1; /* 0x0000010 */ - util_cpu_caps.has_mmx = (regs2[3] >> 23) & 1; /* 0x0800000 */ - util_cpu_caps.has_sse = (regs2[3] >> 25) & 1; /* 0x2000000 */ - util_cpu_caps.has_sse2 = (regs2[3] >> 26) & 1; /* 0x4000000 */ - util_cpu_caps.has_sse3 = (regs2[2] >> 0) & 1; /* 0x0000001 */ - util_cpu_caps.has_ssse3 = (regs2[2] >> 9) & 1; /* 0x0000020 */ - util_cpu_caps.has_sse4_1 = (regs2[2] >> 19) & 1; - util_cpu_caps.has_sse4_2 = (regs2[2] >> 20) & 1; - util_cpu_caps.has_popcnt = (regs2[2] >> 23) & 1; - util_cpu_caps.has_avx = ((regs2[2] >> 28) & 1) && // AVX - ((regs2[2] >> 27) & 1) && // OSXSAVE - ((xgetbv() & 6) == 6); // XMM & YMM - util_cpu_caps.has_f16c = (regs2[2] >> 29) & 1; - util_cpu_caps.has_mmx2 = util_cpu_caps.has_sse; /* SSE cpus supports mmxext too */ -#if defined(PIPE_ARCH_X86_64) - util_cpu_caps.has_daz = 1; -#else - util_cpu_caps.has_daz = util_cpu_caps.has_sse3 || - (util_cpu_caps.has_sse2 && sse2_has_daz()); -#endif - - cacheline = ((regs2[1] >> 8) & 0xFF) * 8; - if (cacheline > 0) - util_cpu_caps.cacheline = cacheline; - } - if (util_cpu_caps.has_avx && regs[0] >= 0x00000007) { - uint32_t regs7[4]; - cpuid_count(0x00000007, 0x00000000, regs7); - util_cpu_caps.has_avx2 = (regs7[1] >> 5) & 1; - } - - if (regs[1] == 0x756e6547 && regs[2] == 0x6c65746e && regs[3] == 0x49656e69) { - /* GenuineIntel */ - util_cpu_caps.has_intel = 1; - } - - cpuid(0x80000000, regs); - - if (regs[0] >= 0x80000001) { - - cpuid(0x80000001, regs2); - - util_cpu_caps.has_mmx |= (regs2[3] >> 23) & 1; - util_cpu_caps.has_mmx2 |= (regs2[3] >> 22) & 1; - util_cpu_caps.has_3dnow = (regs2[3] >> 31) & 1; - util_cpu_caps.has_3dnow_ext = (regs2[3] >> 30) & 1; - - util_cpu_caps.has_xop = util_cpu_caps.has_avx && - ((regs2[2] >> 11) & 1); - } - - if (regs[0] >= 0x80000006) { - cpuid(0x80000006, regs2); - util_cpu_caps.cacheline = regs2[2] & 0xFF; - } - - if (!util_cpu_caps.has_sse) { - util_cpu_caps.has_sse2 = 0; - util_cpu_caps.has_sse3 = 0; - util_cpu_caps.has_ssse3 = 0; - util_cpu_caps.has_sse4_1 = 0; - } - } -#endif /* PIPE_ARCH_X86 || PIPE_ARCH_X86_64 */ - -#if defined(PIPE_ARCH_PPC) - check_os_altivec_support(); -#endif /* PIPE_ARCH_PPC */ - -#ifdef DEBUG - if (debug_get_option_dump_cpu()) { - debug_printf("util_cpu_caps.nr_cpus = %u\n", util_cpu_caps.nr_cpus); - - debug_printf("util_cpu_caps.x86_cpu_type = %u\n", util_cpu_caps.x86_cpu_type); - debug_printf("util_cpu_caps.cacheline = %u\n", util_cpu_caps.cacheline); - - debug_printf("util_cpu_caps.has_tsc = %u\n", util_cpu_caps.has_tsc); - debug_printf("util_cpu_caps.has_mmx = %u\n", util_cpu_caps.has_mmx); - debug_printf("util_cpu_caps.has_mmx2 = %u\n", util_cpu_caps.has_mmx2); - debug_printf("util_cpu_caps.has_sse = %u\n", util_cpu_caps.has_sse); - debug_printf("util_cpu_caps.has_sse2 = %u\n", util_cpu_caps.has_sse2); - debug_printf("util_cpu_caps.has_sse3 = %u\n", util_cpu_caps.has_sse3); - debug_printf("util_cpu_caps.has_ssse3 = %u\n", util_cpu_caps.has_ssse3); - debug_printf("util_cpu_caps.has_sse4_1 = %u\n", util_cpu_caps.has_sse4_1); - debug_printf("util_cpu_caps.has_sse4_2 = %u\n", util_cpu_caps.has_sse4_2); - debug_printf("util_cpu_caps.has_avx = %u\n", util_cpu_caps.has_avx); - debug_printf("util_cpu_caps.has_avx2 = %u\n", util_cpu_caps.has_avx2); - debug_printf("util_cpu_caps.has_f16c = %u\n", util_cpu_caps.has_f16c); - debug_printf("util_cpu_caps.has_popcnt = %u\n", util_cpu_caps.has_popcnt); - debug_printf("util_cpu_caps.has_3dnow = %u\n", util_cpu_caps.has_3dnow); - debug_printf("util_cpu_caps.has_3dnow_ext = %u\n", util_cpu_caps.has_3dnow_ext); - debug_printf("util_cpu_caps.has_xop = %u\n", util_cpu_caps.has_xop); - debug_printf("util_cpu_caps.has_altivec = %u\n", util_cpu_caps.has_altivec); - debug_printf("util_cpu_caps.has_daz = %u\n", util_cpu_caps.has_daz); - } -#endif - - util_cpu_detect_initialized = TRUE; -} |