From 0402d388cb9803652c0f9a52ba7dcb6029fdd0b9 Mon Sep 17 00:00:00 2001 From: marha Date: Sat, 30 Apr 2011 15:25:48 +0000 Subject: Added extra needed files --- mesalib/src/gallium/auxiliary/util/u_cpu_detect.c | 343 ++++++++++++++++++++++ 1 file changed, 343 insertions(+) create mode 100644 mesalib/src/gallium/auxiliary/util/u_cpu_detect.c (limited to 'mesalib/src/gallium/auxiliary/util/u_cpu_detect.c') diff --git a/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c b/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c new file mode 100644 index 000000000..28929d174 --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c @@ -0,0 +1,343 @@ +/************************************************************************** + * + * 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 + */ + +#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 +#else +#include +#include +#endif +#endif + +#if defined(PIPE_OS_NETBSD) || defined(PIPE_OS_OPENBSD) +#include +#include +#include +#endif + +#if defined(PIPE_OS_FREEBSD) +#include +#include +#endif + +#if defined(PIPE_OS_LINUX) +#include +#endif + +#ifdef PIPE_OS_UNIX +#include +#endif + +#if defined(PIPE_OS_WINDOWS) +#include +#if defined(MSVC) +#include +#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_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_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 +} +#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 + +#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] >> 8) & 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_avx = (regs2[2] >> 28) & 1; + util_cpu_caps.has_mmx2 = util_cpu_caps.has_sse; /* SSE cpus supports mmxext too */ + + cacheline = ((regs2[1] >> 8) & 0xFF) * 8; + if (cacheline > 0) + util_cpu_caps.cacheline = cacheline; + } + + 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; + } + + 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_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_altivec = %u\n", util_cpu_caps.has_altivec); + } +#endif + + util_cpu_detect_initialized = TRUE; +} -- cgit v1.2.3