diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_cpu_detect.c')
| -rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.c | 802 |
1 files changed, 408 insertions, 394 deletions
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c index d9f2f8fc28..facbe69173 100644 --- a/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/src/gallium/auxiliary/util/u_cpu_detect.c @@ -24,23 +24,21 @@ * **************************************************************************/ -/* - * Based on the work of Eric Anholt <anholt@FreeBSD.org> +/** + * @file + * CPU feature detection. + * + * @author Dennis Smit + * @author Based on the work of Eric Anholt <anholt@FreeBSD.org> */ -/* FIXME: clean this entire file up */ +#include "pipe/p_config.h" +#include "u_debug.h" #include "u_cpu_detect.h" -#ifdef __linux__ -#define OS_LINUX -#endif -#ifdef WIN32 -#define OS_WIN32 -#endif - -#if defined(ARCH_POWERPC) -#if defined(OS_DARWIN) +#if defined(PIPE_ARCH_PPC) +#if defined(PIPE_OS_DARWIN) #include <sys/sysctl.h> #else #include <signal.h> @@ -48,140 +46,147 @@ #endif #endif -#if defined(OS_NETBSD) || defined(OS_OPENBSD) +#if defined(PIPE_OS_NETBSD) || defined(PIPE_OS_OPENBSD) #include <sys/param.h> #include <sys/sysctl.h> #include <machine/cpu.h> #endif -#if defined(OS_FREEBSD) +#if defined(PIPE_OS_FREEBSD) #include <sys/types.h> #include <sys/sysctl.h> #endif -#if defined(OS_LINUX) +#if defined(PIPE_OS_LINUX) #include <signal.h> #endif -#if defined(OS_WIN32) -#include <windows.h> +#ifdef PIPE_OS_UNIX +#include <unistd.h> #endif -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> +#if defined(PIPE_OS_WINDOWS) +#include <windows.h> +#if defined(MSVC) +#include <intrin.h> +#endif +#endif -static struct cpu_detect_caps __cpu_detect_caps; -static int __cpu_detect_initialized = 0; +struct util_cpu_caps util_cpu_caps; static int has_cpuid(void); -static int cpuid(unsigned int ax, unsigned int *p); + +#if defined(PIPE_ARCH_X86) /* The sigill handlers */ -#if defined(ARCH_X86) /* x86 (linux katmai handler check thing) */ -#if defined(OS_LINUX) && defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) -static void sigill_handler_sse(int signal, struct sigcontext sc) +#if defined(PIPE_OS_LINUX) //&& defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) +static void +sigill_handler_sse(int signal, struct sigcontext sc) { - /* Both the "xorps %%xmm0,%%xmm0" and "divps %xmm0,%%xmm1" - * instructions are 3 bytes long. We must increment the instruction - * pointer manually to avoid repeated execution of the offending - * instruction. - * - * If the SIGILL is caused by a divide-by-zero when unmasked - * exceptions aren't supported, the SIMD FPU status and control - * word will be restored at the end of the test, so we don't need - * to worry about doing it here. Besides, we may not be able to... - */ - sc.eip += 3; - - __cpu_detect_caps.hasSSE=0; + /* Both the "xorps %%xmm0,%%xmm0" and "divps %xmm0,%%xmm1" + * instructions are 3 bytes long. We must increment the instruction + * pointer manually to avoid repeated execution of the offending + * instruction. + * + * If the SIGILL is caused by a divide-by-zero when unmasked + * exceptions aren't supported, the SIMD FPU status and control + * word will be restored at the end of the test, so we don't need + * to worry about doing it here. Besides, we may not be able to... + */ + sc.eip += 3; + + util_cpu_caps.has_sse=0; } -static void sigfpe_handler_sse(int signal, struct sigcontext sc) +static void +sigfpe_handler_sse(int signal, struct sigcontext sc) { - if (sc.fpstate->magic != 0xffff) { - /* Our signal context has the extended FPU state, so reset the - * divide-by-zero exception mask and clear the divide-by-zero - * exception bit. - */ - sc.fpstate->mxcsr |= 0x00000200; - sc.fpstate->mxcsr &= 0xfffffffb; - } else { - /* If we ever get here, we're completely hosed. - */ - } + if (sc.fpstate->magic != 0xffff) { + /* Our signal context has the extended FPU state, so reset the + * divide-by-zero exception mask and clear the divide-by-zero + * exception bit. + */ + sc.fpstate->mxcsr |= 0x00000200; + sc.fpstate->mxcsr &= 0xfffffffb; + } else { + /* If we ever get here, we're completely hosed. + */ + } } -#endif -#endif /* OS_LINUX && _POSIX_SOURCE && X86_FXSR_MAGIC */ +#endif /* PIPE_OS_LINUX && _POSIX_SOURCE && X86_FXSR_MAGIC */ -#if defined(OS_WIN32) -LONG CALLBACK win32_sig_handler_sse(EXCEPTION_POINTERS* ep) +#if defined(PIPE_OS_WINDOWS) +static LONG CALLBACK +win32_sig_handler_sse(EXCEPTION_POINTERS* ep) { - if(ep->ExceptionRecord->ExceptionCode==EXCEPTION_ILLEGAL_INSTRUCTION){ - ep->ContextRecord->Eip +=3; - __cpu_detect_caps.hasSSE=0; - return EXCEPTION_CONTINUE_EXECUTION; - } - return EXCEPTION_CONTINUE_SEARCH; + if(ep->ExceptionRecord->ExceptionCode==EXCEPTION_ILLEGAL_INSTRUCTION){ + ep->ContextRecord->Eip +=3; + util_cpu_caps.has_sse=0; + return EXCEPTION_CONTINUE_EXECUTION; + } + return EXCEPTION_CONTINUE_SEARCH; } -#endif /* OS_WIN32 */ +#endif /* PIPE_OS_WINDOWS */ +#endif /* PIPE_ARCH_X86 */ -#if defined(ARCH_POWERPC) && !defined(OS_DARWIN) -static sigjmp_buf __lv_powerpc_jmpbuf; -static volatile sig_atomic_t __lv_powerpc_canjump = 0; -static void sigill_handler (int sig); +#if defined(PIPE_ARCH_PPC) && !defined(PIPE_OS_DARWIN) +static jmp_buf __lv_powerpc_jmpbuf; +static volatile sig_atomic_t __lv_powerpc_canjump = 0; -static void sigill_handler (int sig) +static void +sigill_handler(int sig) { - if (!__lv_powerpc_canjump) { - signal (sig, SIG_DFL); - raise (sig); - } + if (!__lv_powerpc_canjump) { + signal (sig, SIG_DFL); + raise (sig); + } - __lv_powerpc_canjump = 0; - siglongjmp(__lv_powerpc_jmpbuf, 1); + __lv_powerpc_canjump = 0; + longjmp(__lv_powerpc_jmpbuf, 1); } +#endif -static void check_os_altivec_support(void) +#if defined(PIPE_ARCH_PPC) +static void +check_os_altivec_support(void) { -#if defined(OS_DARWIN) - 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) { - __cpu_detect_caps.hasAltiVec = 1; - } - } -#else /* !OS_DARWIN */ - /* no Darwin, do it the brute-force way */ - /* this is borrowed from the libmpeg2 library */ - signal(SIGILL, sigill_handler); - if (sigsetjmp(__lv_powerpc_jmpbuf, 1)) { - 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); - __cpu_detect_caps.hasAltiVec = 1; - } -#endif +#if defined(PIPE_OS_DARWIN) + 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_DARWIN */ + /* no 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_DARWIN */ } -#endif +#endif /* PIPE_ARCH_PPC */ /* If we're running on a processor that can do SSE, let's see if we * are allowed to or not. This will catch 2.4.0 or later kernels that @@ -189,318 +194,327 @@ static void check_os_altivec_support(void) * and RedHat patched 2.2 kernels that have broken exception handling * support for user space apps that do SSE. */ -static void check_os_katmai_support(void) +#if defined(PIPE_ARCH_X86) || defined (PIPE_ARCH_X86_64) +static void +check_os_katmai_support(void) { -#if defined(ARCH_X86) -#if defined(OS_FREEBSD) - int has_sse=0, ret; - int len = sizeof (has_sse); - - ret = sysctlbyname("hw.instruction_sse", &has_sse, &len, NULL, 0); - if (ret || !has_sse) - __cpu_detect_caps.hasSSE=0; - -#elif defined(OS_NETBSD) || defined(OS_OPENBSD) - int has_sse, has_sse2, ret, mib[2]; - int varlen; - - mib[0] = CTL_MACHDEP; - mib[1] = CPU_SSE; - varlen = sizeof (has_sse); - - ret = sysctl(mib, 2, &has_sse, &varlen, NULL, 0); - if (ret < 0 || !has_sse) { - __cpu_detect_caps.hasSSE = 0; - } else { - __cpu_detect_caps.hasSSE = 1; - } - - mib[1] = CPU_SSE2; - varlen = sizeof (has_sse2); - ret = sysctl(mib, 2, &has_sse2, &varlen, NULL, 0); - if (ret < 0 || !has_sse2) { - __cpu_detect_caps.hasSSE2 = 0; - } else { - __cpu_detect_caps.hasSSE2 = 1; - } - __cpu_detect_caps.hasSSE = 0; /* FIXME ?!?!? */ - -#elif defined(OS_WIN32) - LPTOP_LEVEL_EXCEPTION_FILTER exc_fil; - if (__cpu_detect_caps.hasSSE) { - exc_fil = SetUnhandledExceptionFilter(win32_sig_handler_sse); - __asm __volatile ("xorps %xmm0, %xmm0"); - SetUnhandledExceptionFilter(exc_fil); - } -#elif defined(OS_LINUX) - struct sigaction saved_sigill; - struct sigaction saved_sigfpe; - - /* Save the original signal handlers. - */ - sigaction(SIGILL, NULL, &saved_sigill); - sigaction(SIGFPE, NULL, &saved_sigfpe); - - signal(SIGILL, (void (*)(int))sigill_handler_sse); - signal(SIGFPE, (void (*)(int))sigfpe_handler_sse); - - /* Emulate test for OSFXSR in CR4. The OS will set this bit if it - * supports the extended FPU save and restore required for SSE. If - * we execute an SSE instruction on a PIII and get a SIGILL, the OS - * doesn't support Streaming SIMD Exceptions, even if the processor - * does. - */ - if (__cpu_detect_caps.hasSSE) { - __asm __volatile ("xorps %xmm1, %xmm0"); - } - - /* Emulate test for OSXMMEXCPT in CR4. The OS will set this bit if - * it supports unmasked SIMD FPU exceptions. If we unmask the - * exceptions, do a SIMD divide-by-zero and get a SIGILL, the OS - * doesn't support unmasked SIMD FPU exceptions. If we get a SIGFPE - * as expected, we're okay but we need to clean up after it. - * - * Are we being too stringent in our requirement that the OS support - * unmasked exceptions? Certain RedHat 2.2 kernels enable SSE by - * setting CR4.OSFXSR but don't support unmasked exceptions. Win98 - * doesn't even support them. We at least know the user-space SSE - * support is good in kernels that do support unmasked exceptions, - * and therefore to be safe I'm going to leave this test in here. - */ - if (__cpu_detect_caps.hasSSE) { - // test_os_katmai_exception_support(); - } - - /* Restore the original signal handlers. - */ - sigaction(SIGILL, &saved_sigill, NULL); - sigaction(SIGFPE, &saved_sigfpe, NULL); +#if defined(PIPE_ARCH_X86) +#if defined(PIPE_OS_FREEBSD) + int has_sse=0, ret; + int len = sizeof (has_sse); + + ret = sysctlbyname("hw.instruction_sse", &has_sse, &len, NULL, 0); + if (ret || !has_sse) + util_cpu_caps.has_sse=0; + +#elif defined(PIPE_OS_NETBSD) || defined(PIPE_OS_OPENBSD) + int has_sse, has_sse2, ret, mib[2]; + int varlen; + + mib[0] = CTL_MACHDEP; + mib[1] = CPU_SSE; + varlen = sizeof (has_sse); + + ret = sysctl(mib, 2, &has_sse, &varlen, NULL, 0); + if (ret < 0 || !has_sse) { + util_cpu_caps.has_sse = 0; + } else { + util_cpu_caps.has_sse = 1; + } + + mib[1] = CPU_SSE2; + varlen = sizeof (has_sse2); + ret = sysctl(mib, 2, &has_sse2, &varlen, NULL, 0); + if (ret < 0 || !has_sse2) { + util_cpu_caps.has_sse2 = 0; + } else { + util_cpu_caps.has_sse2 = 1; + } + util_cpu_caps.has_sse = 0; /* FIXME ?!?!? */ + +#elif defined(PIPE_OS_WINDOWS) + LPTOP_LEVEL_EXCEPTION_FILTER exc_fil; + if (util_cpu_caps.has_sse) { + exc_fil = SetUnhandledExceptionFilter(win32_sig_handler_sse); +#if defined(PIPE_CC_GCC) + __asm __volatile ("xorps %xmm0, %xmm0"); +#elif defined(PIPE_CC_MSVC) + __asm { + xorps xmm0, xmm0 // executing SSE instruction + } +#else +#error Unsupported compiler +#endif + SetUnhandledExceptionFilter(exc_fil); + } +#elif defined(PIPE_OS_LINUX) + struct sigaction saved_sigill; + struct sigaction saved_sigfpe; + + /* Save the original signal handlers. + */ + sigaction(SIGILL, NULL, &saved_sigill); + sigaction(SIGFPE, NULL, &saved_sigfpe); + + signal(SIGILL, (void (*)(int))sigill_handler_sse); + signal(SIGFPE, (void (*)(int))sigfpe_handler_sse); + + /* Emulate test for OSFXSR in CR4. The OS will set this bit if it + * supports the extended FPU save and restore required for SSE. If + * we execute an SSE instruction on a PIII and get a SIGILL, the OS + * doesn't support Streaming SIMD Exceptions, even if the processor + * does. + */ + if (util_cpu_caps.has_sse) { + __asm __volatile ("xorps %xmm1, %xmm0"); + } + + /* Emulate test for OSXMMEXCPT in CR4. The OS will set this bit if + * it supports unmasked SIMD FPU exceptions. If we unmask the + * exceptions, do a SIMD divide-by-zero and get a SIGILL, the OS + * doesn't support unmasked SIMD FPU exceptions. If we get a SIGFPE + * as expected, we're okay but we need to clean up after it. + * + * Are we being too stringent in our requirement that the OS support + * unmasked exceptions? Certain RedHat 2.2 kernels enable SSE by + * setting CR4.OSFXSR but don't support unmasked exceptions. Win98 + * doesn't even support them. We at least know the user-space SSE + * support is good in kernels that do support unmasked exceptions, + * and therefore to be safe I'm going to leave this test in here. + */ + if (util_cpu_caps.has_sse) { + // test_os_katmai_exception_support(); + } + + /* Restore the original signal handlers. + */ + sigaction(SIGILL, &saved_sigill, NULL); + sigaction(SIGFPE, &saved_sigfpe, NULL); #else - /* We can't use POSIX signal handling to test the availability of - * SSE, so we disable it by default. - */ - __cpu_detect_caps.hasSSE = 0; + /* We can't use POSIX signal handling to test the availability of + * SSE, so we disable it by default. + */ + util_cpu_caps.has_sse = 0; #endif /* __linux__ */ #endif + +#if defined(PIPE_ARCH_X86_64) + util_cpu_caps.has_sse = 1; +#endif } static int has_cpuid(void) { -#if defined(ARCH_X86) - 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; +#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; + return 0; #endif } -static int cpuid(unsigned int ax, unsigned int *p) + +/** + * @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(ARCH_X86) - unsigned int flags; - - __asm __volatile - ("movl %%ebx, %%esi\n\t" - "cpuid\n\t" - "xchgl %%ebx, %%esi" - : "=a" (p[0]), "=S" (p[1]), - "=c" (p[2]), "=d" (p[3]) - : "0" (ax)); - - return 0; +#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 - return -1; + p[0] = 0; + p[1] = 0; + p[2] = 0; + p[3] = 0; #endif } +#endif /* X86 or X86_64 */ -void cpu_detect_initialize() +void +util_cpu_detect(void) { - unsigned int regs[4]; - unsigned int regs2[4]; - - int mib[2], ncpu; - int len; - - memset(&__cpu_detect_caps, 0, sizeof (struct cpu_detect_caps)); - - /* Check for arch type */ -#if defined(ARCH_MIPS) - __cpu_detect_caps.type = CPU_DETECT_TYPE_MIPS; -#elif defined(ARCH_ALPHA) - __cpu_detect_caps.type = CPU_DETECT_TYPE_ALPHA; -#elif defined(ARCH_SPARC) - __cpu_detect_caps.type = CPU_DETECT_TYPE_SPARC; -#elif defined(ARCH_X86) - __cpu_detect_caps.type = CPU_DETECT_TYPE_X86; -#elif defined(ARCH_POWERPC) - __cpu_detect_caps.type = CPU_DETECT_TYPE_POWERPC; + static boolean util_cpu_detect_initialized = FALSE; + + if(util_cpu_detect_initialized) + return; + + memset(&util_cpu_caps, 0, sizeof util_cpu_caps); + + /* Check for arch type */ +#if defined(PIPE_ARCH_MIPS) + util_cpu_caps.arch = UTIL_CPU_ARCH_MIPS; +#elif defined(PIPE_ARCH_ALPHA) + util_cpu_caps.arch = UTIL_CPU_ARCH_ALPHA; +#elif defined(PIPE_ARCH_SPARC) + util_cpu_caps.arch = UTIL_CPU_ARCH_SPARC; +#elif defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64) + util_cpu_caps.arch = UTIL_CPU_ARCH_X86; + util_cpu_caps.little_endian = 1; +#elif defined(PIPE_ARCH_PPC) + util_cpu_caps.arch = UTIL_CPU_ARCH_POWERPC; + util_cpu_caps.little_endian = 0; #else - __cpu_detect_caps.type = CPU_DETECT_TYPE_OTHER; + util_cpu_caps.arch = UTIL_CPU_ARCH_UNKNOWN; #endif - /* Count the number of CPUs in system */ -#if !defined(OS_WIN32) && !defined(OS_UNKNOWN) && defined(_SC_NPROCESSORS_ONLN) - __cpu_detect_caps.nrcpu = sysconf(_SC_NPROCESSORS_ONLN); - if (__cpu_detect_caps.nrcpu == -1) - __cpu_detect_caps.nrcpu = 1; - -#elif defined(OS_NETBSD) || defined(OS_FREEBSD) || defined(OS_OPENBSD) - - mib[0] = CTL_HW; - mib[1] = HW_NCPU; - - len = sizeof (ncpu); - sysctl(mib, 2, &ncpu, &len, NULL, 0); - __cpu_detect_caps.nrcpu = ncpu; - + /* 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 - __cpu_detect_caps.nrcpu = 1; + util_cpu_caps.nr_cpus = 1; #endif -#if defined(ARCH_X86) - /* No cpuid, old 486 or lower */ - if (has_cpuid() == 0) - return; - - __cpu_detect_caps.cacheline = 32; - - /* Get max cpuid level */ - cpuid(0x00000000, regs); - - if (regs[0] >= 0x00000001) { - unsigned int cacheline; - - cpuid (0x00000001, regs2); - - __cpu_detect_caps.x86cpuType = (regs2[0] >> 8) & 0xf; - if (__cpu_detect_caps.x86cpuType == 0xf) - __cpu_detect_caps.x86cpuType = 8 + ((regs2[0] >> 20) & 255); /* use extended family (P4, IA64) */ - - /* general feature flags */ - __cpu_detect_caps.hasTSC = (regs2[3] & (1 << 8 )) >> 8; /* 0x0000010 */ - __cpu_detect_caps.hasMMX = (regs2[3] & (1 << 23 )) >> 23; /* 0x0800000 */ - __cpu_detect_caps.hasSSE = (regs2[3] & (1 << 25 )) >> 25; /* 0x2000000 */ - __cpu_detect_caps.hasSSE2 = (regs2[3] & (1 << 26 )) >> 26; /* 0x4000000 */ - __cpu_detect_caps.hasSSE3 = (regs2[2] & (1)); /* 0x0000001 */ - __cpu_detect_caps.hasSSSE3 = (regs2[2] & (1 << 9 )) >> 9; /* 0x0000020 */ - __cpu_detect_caps.hasMMX2 = __cpu_detect_caps.hasSSE; /* SSE cpus supports mmxext too */ - - cacheline = ((regs2[1] >> 8) & 0xFF) * 8; - if (cacheline > 0) - __cpu_detect_caps.cacheline = cacheline; - } - - cpuid(0x80000000, regs); - - if (regs[0] >= 0x80000001) { - - cpuid(0x80000001, regs2); - - __cpu_detect_caps.hasMMX |= (regs2[3] & (1 << 23 )) >> 23; /* 0x0800000 */ - __cpu_detect_caps.hasMMX2 |= (regs2[3] & (1 << 22 )) >> 22; /* 0x400000 */ - __cpu_detect_caps.has3DNow = (regs2[3] & (1 << 31 )) >> 31; /* 0x80000000 */ - __cpu_detect_caps.has3DNowExt = (regs2[3] & (1 << 30 )) >> 30; - } - - if (regs[0] >= 0x80000006) { - cpuid(0x80000006, regs2); - __cpu_detect_caps.cacheline = regs2[2] & 0xFF; - } - - -#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_NETBSD) || defined(OS_CYGWIN) || defined(OS_OPENBSD) - if (__cpu_detect_caps.hasSSE) - check_os_katmai_support(); - - if (!__cpu_detect_caps.hasSSE) { - __cpu_detect_caps.hasSSE2 = 0; - __cpu_detect_caps.hasSSE3 = 0; - __cpu_detect_caps.hasSSSE3 = 0; - } -#else - __cpu_detect_caps.hasSSE = 0; - __cpu_detect_caps.hasSSE2 = 0; - __cpu_detect_caps.hasSSE3 = 0; - __cpu_detect_caps.hasSSSE3 = 0; +#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] & (1 << 8 )) >> 8; /* 0x0000010 */ + util_cpu_caps.has_mmx = (regs2[3] & (1 << 23 )) >> 23; /* 0x0800000 */ + util_cpu_caps.has_sse = (regs2[3] & (1 << 25 )) >> 25; /* 0x2000000 */ + util_cpu_caps.has_sse2 = (regs2[3] & (1 << 26 )) >> 26; /* 0x4000000 */ + util_cpu_caps.has_sse3 = (regs2[2] & (1)); /* 0x0000001 */ + util_cpu_caps.has_ssse3 = (regs2[2] & (1 << 9 )) >> 9; /* 0x0000020 */ + util_cpu_caps.has_sse4_1 = (regs2[2] & (1 << 19)) >> 19; + 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] & (1 << 23 )) >> 23; /* 0x0800000 */ + util_cpu_caps.has_mmx2 |= (regs2[3] & (1 << 22 )) >> 22; /* 0x400000 */ + util_cpu_caps.has_3dnow = (regs2[3] & (1 << 31 )) >> 31; /* 0x80000000 */ + util_cpu_caps.has_3dnow_ext = (regs2[3] & (1 << 30 )) >> 30; + } + + if (regs[0] >= 0x80000006) { + cpuid(0x80000006, regs2); + util_cpu_caps.cacheline = regs2[2] & 0xFF; + } + + if (util_cpu_caps.has_sse) + check_os_katmai_support(); + + 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 + debug_printf("util_cpu_caps.arch = %i\n", util_cpu_caps.arch); + 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_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 -#endif /* ARCH_X86 */ - -#if defined(ARCH_POWERPC) - check_os_altivec_support(); -#endif /* ARCH_POWERPC */ - - __cpu_detect_initialized = 1; -} - -struct cpu_detect_caps *cpu_detect_get_caps() -{ - return &__cpu_detect_caps; -} - -/* The getters and setters for feature flags */ -int cpu_detect_get_tsc() -{ - return __cpu_detect_caps.hasTSC; -} - -int cpu_detect_get_mmx() -{ - return __cpu_detect_caps.hasMMX; -} - -int cpu_detect_get_mmx2() -{ - return __cpu_detect_caps.hasMMX2; -} -int cpu_detect_get_sse() -{ - return __cpu_detect_caps.hasSSE; -} - -int cpu_detect_get_sse2() -{ - return __cpu_detect_caps.hasSSE2; -} - -int cpu_detect_get_sse3() -{ - return __cpu_detect_caps.hasSSE3; -} - -int cpu_detect_get_ssse3() -{ - return __cpu_detect_caps.hasSSSE3; + util_cpu_detect_initialized = TRUE; } - -int cpu_detect_get_3dnow() -{ - return __cpu_detect_caps.has3DNow; -} - -int cpu_detect_get_3dnow2() -{ - return __cpu_detect_caps.has3DNowExt; -} - -int cpu_detect_get_altivec() -{ - return __cpu_detect_caps.hasAltiVec; -} - |