[MPlayer-cvslog] CVS: main cpudetect.c,1.40,1.41
Guillaume Poirier CVS
syncmail at mplayerhq.hu
Tue Oct 4 23:06:09 CEST 2005
CVS change done by Guillaume Poirier CVS
Update of /cvsroot/mplayer/main
In directory mail:/var2/tmp/cvs-serv2429
Modified Files:
cpudetect.c
Log Message:
according to Intel/AMD official documentations, CPU family should be displayed as
the sum of CPUID's family field and extended family field when a CPU has a CPUID
family 0xF.
Patch by Zuxy <zuxy POIS meng AH gmail POIS com>
Original thread:
Date: Oct 2, 2005 11:08 AM
Subject: [MPlayer-dev-eng] [Patch] Correction of P4 family CPUs detection in cputable.h
Index: cpudetect.c
===================================================================
RCS file: /cvsroot/mplayer/main/cpudetect.c,v
retrieving revision 1.40
retrieving revision 1.41
diff -u -r1.40 -r1.41
--- cpudetect.c 25 May 2005 08:48:31 -0000 1.40
+++ cpudetect.c 4 Oct 2005 21:06:07 -0000 1.41
@@ -120,9 +120,12 @@
do_cpuid(0x00000001, regs2);
caps->cpuType=(regs2[0] >> 8)&0xf;
+
+// see AMD64 Architecture Programmer's Manual, Volume 3: General-purpose and
+// System Instructions, Table 3-2: Effective family computation, page 120.
if(caps->cpuType==0xf){
- // use extended family (P4, IA64)
- caps->cpuType=8+((regs2[0]>>20)&255);
+ // use extended family (P4, IA64, K8)
+ caps->cpuType=0xf+((regs2[0]>>20)&255);
}
caps->cpuStepping=regs2[0] & 0xf;
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