wbemprox: Implement MSVC version of do_cpuid.

dlls/wbemprox/builtin.c

@@ -2074,6 +2074,9 @@ done:
 static inline void do_cpuid( unsigned int ax, unsigned int *p )
 {
 #ifdef __i386__
+#ifdef _MSC_VER
+    __cpuid(p, ax);
+#else
     __asm__("pushl %%ebx\n\t"
                 "cpuid\n\t"
                 "movl %%ebx, %%esi\n\t"
@@ -2081,6 +2084,7 @@ static inline void do_cpuid( unsigned int ax, unsigned int *p )
                 : "=a" (p[0]), "=S" (p[1]), "=c" (p[2]), "=d" (p[3])
                 :  "0" (ax));
 #endif
+#endif
 }
 
 static void get_processor_id( WCHAR *processor_id )