@@ -48,6 +48,30 @@ x86_cpuid (unsigned int __level,
return __get_cpuid (__level, __eax, __ebx, __ecx, __edx);
}
+/* Return cpuid data for requested cpuid level and sub-level, as found
+ in returned eax, ebx, ecx and edx registers. The function checks
+ if cpuid is supported and returns 1 for valid cpuid information or
+ 0 for unsupported cpuid level. Pointers may be non-null. */
+
+static __inline int
+x86_cpuid_count (unsigned int __level, unsigned int __sublevel,
+ unsigned int *__eax, unsigned int *__ebx,
+ unsigned int *__ecx, unsigned int *__edx)
+{
+ unsigned int __scratch;
+
+ if (__eax == nullptr)
+ __eax = &__scratch;
+ if (__ebx == nullptr)
+ __ebx = &__scratch;
+ if (__ecx == nullptr)
+ __ecx = &__scratch;
+ if (__edx == nullptr)
+ __edx = &__scratch;
+
+ return __get_cpuid_count (__level, __sublevel, __eax, __ebx, __ecx, __edx);
+}
+
#else
static __inline int
@@ -58,6 +82,14 @@ x86_cpuid (unsigned int __level,
return 0;
}
+static __inline int
+x86_cpuid_count (unsigned int __level, unsigned int __sublevel,
+ unsigned int *__eax, unsigned int *__ebx,
+ unsigned int *__ecx, unsigned int *__edx)
+{
+ return 0;
+}
+
#endif /* i386 && x86_64 */
#endif /* NAT_X86_CPUID_H */