From 0044fb7a38bed184894c76d4951963c2a5662095 Mon Sep 17 00:00:00 2001
From: diego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sun, 24 Feb 2008 18:09:28 +0000
Subject: Enable SSE detection on OS/2. patch by KO Myung-Hun, komh chollian
 net

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26093 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 cpudetect.c | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

(limited to 'cpudetect.c')

diff --git a/cpudetect.c b/cpudetect.c
index b3a7d0b277..c3cbe41254 100644
--- a/cpudetect.c
+++ b/cpudetect.c
@@ -33,6 +33,11 @@ CpuCaps gCpuCaps;
 #include <windows.h>
 #endif
 
+#ifdef __OS2__
+#define INCL_DOS
+#include <os2.h>
+#endif
+
 #ifdef __AMIGAOS4__
 #include <proto/exec.h>
 #endif
@@ -183,7 +188,8 @@ void GetCpuCaps( CpuCaps *caps)
 		/* FIXME: Does SSE2 need more OS support, too? */
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \
   || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
-  || defined(__APPLE__) || defined(__CYGWIN__) || defined(__MINGW32__)
+  || defined(__APPLE__) || defined(__CYGWIN__) || defined(__MINGW32__) \
+  || defined(__OS2__)
 		if (caps->hasSSE)
 			check_os_katmai_support();
 		if (!caps->hasSSE)
@@ -321,6 +327,24 @@ LONG CALLBACK win32_sig_handler_sse(EXCEPTION_POINTERS* ep)
 }
 #endif /* WIN32 */
 
+#ifdef __OS2__
+ULONG _System os2_sig_handler_sse( PEXCEPTIONREPORTRECORD       p1,
+                                   PEXCEPTIONREGISTRATIONRECORD p2,
+                                   PCONTEXTRECORD               p3,
+                                   PVOID                        p4 )
+{
+   if(p1->ExceptionNum == XCPT_ILLEGAL_INSTRUCTION){
+      mp_msg(MSGT_CPUDETECT, MSGL_V, "SIGILL, ");
+
+      p3->ctx_RegEip += 3;
+      gCpuCaps.hasSSE = 0;
+
+      return XCPT_CONTINUE_EXECUTION;
+   }
+   return XCPT_CONTINUE_SEARCH;
+}
+#endif
+
 /* 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,
@@ -391,6 +415,16 @@ static void check_os_katmai_support( void )
       if ( gCpuCaps.hasSSE ) mp_msg(MSGT_CPUDETECT,MSGL_V, "yes.\n" );
       else mp_msg(MSGT_CPUDETECT,MSGL_V, "no!\n" );
    }
+#elif defined(__OS2__)
+   EXCEPTIONREGISTRATIONRECORD RegRec = { 0, &os2_sig_handler_sse };
+   if ( gCpuCaps.hasSSE ) {
+      mp_msg(MSGT_CPUDETECT,MSGL_V, "Testing OS support for SSE... " );
+      DosSetExceptionHandler( &RegRec );
+      __asm __volatile ("xorps %xmm0, %xmm0");
+      DosUnsetExceptionHandler( &RegRec );
+      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)
    struct sigaction saved_sigill;
-- 
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