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SSE os support detection for windows 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10441 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
faust3 2003-07-19 12:25:18 +00:00
parent 2a6d87a964
commit fcc160e01c
1 changed files with 28 additions and 1 deletions
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29
cpudetect.c
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@ -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;