diff options
Diffstat (limited to 'cpudetect.c')
| -rw-r--r-- | cpudetect.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/cpudetect.c b/cpudetect.c index 401dadc108..c81a96ba44 100644 --- a/cpudetect.c +++ b/cpudetect.c @@ -29,6 +29,10 @@ CpuCaps gCpuCaps; #include <signal.h> #endif +#ifdef WIN32 +#include <windows.h> +#endif + //#define X86_FXSR_MAGIC /* Thanks to the FreeBSD project for some of this cpuid code, and * help understanding how to use it. Thanks to the Mesa @@ -163,7 +167,7 @@ void GetCpuCaps( CpuCaps *caps) #endif /* FIXME: Does SSE2 need more OS support, too? */ -#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) +#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(WIN32) if (caps->hasSSE) check_os_katmai_support(); if (!caps->hasSSE) @@ -293,6 +297,19 @@ static void sigfpe_handler_sse( int signal, struct sigcontext sc ) } #endif /* __linux__ && _POSIX_SOURCE && X86_FXSR_MAGIC */ +#ifdef WIN32 +LONG CALLBACK win32_sig_handler_sse(EXCEPTION_POINTERS* ep) +{ + if(ep->ExceptionRecord->ExceptionCode==EXCEPTION_ILLEGAL_INSTRUCTION){ + mp_msg(MSGT_CPUDETECT,MSGL_V, "SIGILL, " ); + ep->ContextRecord->Eip +=3; + gCpuCaps.hasSSE=0; + return EXCEPTION_CONTINUE_EXECUTION; + } + return EXCEPTION_CONTINUE_SEARCH; +} +#endif /* WIN32 */ + /* 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 * haven't been configured for a Pentium III but are running on one, @@ -343,6 +360,16 @@ static void check_os_katmai_support( void ) gCpuCaps.hasSSE = 0; mp_msg(MSGT_CPUDETECT,MSGL_WARN, "No OS support for SSE, disabling to be safe.\n" ); #endif +#elif defined(WIN32) + LPTOP_LEVEL_EXCEPTION_FILTER exc_fil; + if ( gCpuCaps.hasSSE ) { + mp_msg(MSGT_CPUDETECT,MSGL_V, "Testing OS support for SSE... " ); + exc_fil = SetUnhandledExceptionFilter(win32_sig_handler_sse); + __asm __volatile ("xorps %xmm0, %xmm0"); + SetUnhandledExceptionFilter(exc_fil); + if ( gCpuCaps.hasSSE ) mp_msg(MSGT_CPUDETECT,MSGL_V, "yes.\n" ); + else mp_msg(MSGT_CPUDETECT,MSGL_V, "no!\n" ); + } #elif defined(__linux__) #if defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) struct sigaction saved_sigill; |