uid issue

tier1/processor_detect_linux.cpp

@@ -0,0 +1,80 @@
+//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: linux dependant ASM code for CPU capability detection
+//
+// $Workfile:     $
+// $NoKeywords: $
+//=============================================================================//
+
+
+// NOTE: This has to be the last file included! (turned off below, since this is included like a header)
+#include "tier0/memdbgon.h"
+
+
+
+
+// Turn off memdbg macros (turned on up top) since this is included like a header
+#include "tier0/memdbgoff.h"
+
+static void cpuid(uint32 function, uint32& out_eax, uint32& out_ebx, uint32& out_ecx, uint32& out_edx)
+{
+#if defined(PLATFORM_64BITS)
+	asm("mov %%rbx, %%rsi\n\t"
+		"cpuid\n\t"
+		"xchg %%rsi, %%rbx"
+		: "=a" (out_eax),
+		  "=S" (out_ebx),
+		  "=c" (out_ecx),
+		  "=d" (out_edx)
+		: "a" (function) 
+	);
+#else
+	asm("mov %%ebx, %%esi\n\t"
+		"cpuid\n\t"
+		"xchg %%esi, %%ebx"
+		: "=a" (out_eax),
+		  "=S" (out_ebx),
+		  "=c" (out_ecx),
+		  "=d" (out_edx)
+		: "a" (function) 
+	);
+#endif
+}
+
+bool CheckMMXTechnology(void)
+{
+    uint32 eax,ebx,edx,unused;
+    cpuid(1,eax,ebx,unused,edx);
+
+    return edx & 0x800000;
+}
+
+bool CheckSSETechnology(void)
+{
+    uint32 eax,ebx,edx,unused;
+    cpuid(1,eax,ebx,unused,edx);
+
+    return edx & 0x2000000L;
+}
+
+bool CheckSSE2Technology(void)
+{
+    uint32 eax,ebx,edx,unused;
+    cpuid(1,eax,ebx,unused,edx);
+
+    return edx & 0x04000000;
+}
+
+bool Check3DNowTechnology(void)
+{
+    uint32 eax, unused;
+    cpuid(0x80000000,eax,unused,unused,unused);
+
+    if ( eax > 0x80000000L )
+    {
+     	cpuid(0x80000001,unused,unused,unused,eax);
+		return ( eax & 1<<31 );
+    }
+    return false;
+}
+