[Ffmpeg-cvslog] CVS: ffmpeg/libavcodec/i386 cputest.c,1.16,1.17

[Guillaume Poirier CVS]

Update of /cvsroot/ffmpeg/ffmpeg/libavcodec/i386
In directory mail:/var2/tmp/cvs-serv12338/libavcodec/i386

Modified Files:
	cputest.c 
Log Message:
Remove unused and unsupported Cyrix's "Extended MMX", 
Add SSE3 support.
Patch by Zuxy Meng < zuxy POIS meng AH gmail POIS com >
Original thread:
04/26/06 13:13:
[Ffmpeg-devel] [PATCH] Bug fix,	SSE3 support in i386/cputest.c and dsputil.h


Index: cputest.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/i386/cputest.c,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -d -r1.16 -r1.17
--- cputest.c	22 Dec 2005 01:10:09 -0000	1.16
+++ cputest.c	28 Apr 2006 07:46:13 -0000	1.17
@@ -64,6 +64,8 @@
             rval |= MM_MMXEXT | MM_SSE;
         if (std_caps & (1<<26))
             rval |= MM_SSE2;
+        if (ecx & 1)
+            rval |= MM_SSE3;
     }
 
     cpuid(0x80000000, max_ext_level, ebx, ecx, edx);
@@ -76,38 +78,10 @@
             rval |= MM_3DNOWEXT;
         if (ext_caps & (1<<23))
             rval |= MM_MMX;
-    }
-
-    cpuid(0, eax, ebx, ecx, edx);
-    if (       ebx == 0x68747541 &&
-               edx == 0x69746e65 &&
-               ecx == 0x444d4163) {
-        /* AMD */
-        if(ext_caps & (1<<22))
-            rval |= MM_MMXEXT;
-    } else if (ebx == 0x746e6543 &&
-               edx == 0x48727561 &&
-               ecx == 0x736c7561) {  /*  "CentaurHauls" */
-        /* VIA C3 */
-        if(ext_caps & (1<<24))
-          rval |= MM_MMXEXT;
-    } else if (ebx == 0x69727943 &&
-               edx == 0x736e4978 &&
-               ecx == 0x64616574) {
-        /* Cyrix Section */
-        /* See if extended CPUID level 80000001 is supported */
-        /* The value of CPUID/80000001 for the 6x86MX is undefined
-           according to the Cyrix CPU Detection Guide (Preliminary
-           Rev. 1.01 table 1), so we'll check the value of eax for
-           CPUID/0 to see if standard CPUID level 2 is supported.
-           According to the table, the only CPU which supports level
-           2 is also the only one which supports extended CPUID levels.
-        */
-        if (eax < 2)
-            return rval;
-        if (ext_caps & (1<<24))
+        if (ext_caps & (1<<22))
             rval |= MM_MMXEXT;
     }
+
 #if 0
     av_log(NULL, AV_LOG_DEBUG, "%s%s%s%s%s%s\n",
         (rval&MM_MMX) ? "MMX ":"",