diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_cpu_detect.c')
| -rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.c | 63 |
1 files changed, 34 insertions, 29 deletions
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c index ded361ce70..a08241971c 100644 --- a/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/src/gallium/auxiliary/util/u_cpu_detect.c @@ -67,18 +67,20 @@ #if defined(PIPE_OS_WINDOWS) #include <windows.h> +#if defined(MSVC) +#include <intrin.h> +#endif #endif struct util_cpu_caps util_cpu_caps; static int has_cpuid(void); -static int cpuid(uint32_t ax, uint32_t *p); #if defined(PIPE_ARCH_X86) /* The sigill handlers */ -#if defined(PIPE_OS_LINUX) //&& defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) +#if defined(PIPE_OS_LINUX) /*&& defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC)*/ static void sigill_handler_sse(int signal, struct sigcontext sc) { @@ -131,7 +133,7 @@ win32_sig_handler_sse(EXCEPTION_POINTERS* ep) #if defined(PIPE_ARCH_PPC) && !defined(PIPE_OS_DARWIN) -static sigjmp_buf __lv_powerpc_jmpbuf; +static jmp_buf __lv_powerpc_jmpbuf; static volatile sig_atomic_t __lv_powerpc_canjump = 0; static void @@ -143,9 +145,11 @@ sigill_handler(int sig) } __lv_powerpc_canjump = 0; - siglongjmp(__lv_powerpc_jmpbuf, 1); + longjmp(__lv_powerpc_jmpbuf, 1); } +#endif +#if defined(PIPE_ARCH_PPC) static void check_os_altivec_support(void) { @@ -166,7 +170,7 @@ check_os_altivec_support(void) /* 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)) { + if (setjmp(__lv_powerpc_jmpbuf)) { signal(SIGILL, SIG_DFL); } else { __lv_powerpc_canjump = 1; @@ -180,9 +184,9 @@ check_os_altivec_support(void) signal(SIGILL, SIG_DFL); util_cpu_caps.has_altivec = 1; } -#endif +#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 @@ -190,6 +194,7 @@ check_os_altivec_support(void) * and RedHat patched 2.2 kernels that have broken exception handling * support for user space apps that do SSE. */ +#if defined(PIPE_ARCH_X86) || defined (PIPE_ARCH_X86_64) static void check_os_katmai_support(void) { @@ -235,7 +240,7 @@ check_os_katmai_support(void) __asm __volatile ("xorps %xmm0, %xmm0"); #elif defined(PIPE_CC_MSVC) __asm { - xorps xmm0, xmm0 // executing SSE instruction + xorps xmm0, xmm0 /* executing SSE instruction */ } #else #error Unsupported compiler @@ -278,7 +283,7 @@ check_os_katmai_support(void) * 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(); + /* test_os_katmai_exception_support(); */ } /* Restore the original signal handlers. @@ -334,12 +339,11 @@ static int has_cpuid(void) /** * @sa cpuid.h included in gcc-4.3 onwards. + * @sa http://msdn.microsoft.com/en-us/library/hskdteyh.aspx */ -static INLINE int +static INLINE void cpuid(uint32_t ax, uint32_t *p) { - int ret = -1; - #if defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86) __asm __volatile ( "xchgl %%ebx, %1\n\t" @@ -351,7 +355,6 @@ cpuid(uint32_t ax, uint32_t *p) "=d" (p[3]) : "0" (ax) ); - ret = 0; #elif defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86_64) __asm __volatile ( "cpuid\n\t" @@ -361,15 +364,16 @@ cpuid(uint32_t ax, uint32_t *p) "=d" (p[3]) : "0" (ax) ); - ret = 0; #elif defined(PIPE_CC_MSVC) - __cpuid(ax, p); - - ret = 0; + __cpuid(p, ax); +#else + p[0] = 0; + p[1] = 0; + p[2] = 0; + p[3] = 0; #endif - - return ret; } +#endif /* X86 or X86_64 */ void util_cpu_detect(void) @@ -390,19 +394,26 @@ util_cpu_detect(void) 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 util_cpu_caps.arch = UTIL_CPU_ARCH_UNKNOWN; #endif /* Count the number of CPUs in system */ -#if !defined(PIPE_OS_WINDOWS) && !defined(PIPE_OS_UNKNOWN) && defined(_SC_NPROCESSORS_ONLN) +#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_NETBSD) || defined(PIPE_OS_FREEBSD) || defined(PIPE_OS_OPENBSD) +#elif defined(PIPE_OS_BSD) { int mib[2], ncpu; int len; @@ -469,7 +480,6 @@ util_cpu_detect(void) util_cpu_caps.cacheline = regs2[2] & 0xFF; } -#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_FREEBSD) || defined(PIPE_OS_NETBSD) || defined(PIPE_OS_CYGWIN) || defined(PIPE_OS_OPENBSD) if (util_cpu_caps.has_sse) check_os_katmai_support(); @@ -477,13 +487,8 @@ util_cpu_detect(void) 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; } -#else - util_cpu_caps.has_sse = 0; - util_cpu_caps.has_sse2 = 0; - util_cpu_caps.has_sse3 = 0; - util_cpu_caps.has_ssse3 = 0; -#endif } #endif /* PIPE_ARCH_X86 || PIPE_ARCH_X86_64 */ |