include: Add intrin.h and use it to provide __cpuid implementation.

include/Makefile.in

@@ -450,6 +450,7 @@ SOURCES = \
 	msvcrt/fenv.h \
 	msvcrt/float.h \
 	msvcrt/fpieee.h \
+	msvcrt/intrin.h \
 	msvcrt/inttypes.h \
 	msvcrt/io.h \
 	msvcrt/limits.h \

include/msvcrt/intrin.h

+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the Wine project.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+
+#ifndef _INC_INTRIN
+#define _INC_INTRIN
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(__i386__) || defined(__x86_64__)
+static inline void __cpuid(int info[4], int ax)
+{
+  __asm__ ("cpuid" : "=a"(info[0]), "=b" (info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(ax), "c"(0));
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _INC_INTRIN */