1 #ifndef __ASM_X86_PROCESSOR_H
2 #define __ASM_X86_PROCESSOR_H
4 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
5 unsigned int *ecx, unsigned int *edx)
7 /* ecx is often an input as well as an output. */
13 : "0" (*eax), "2" (*ecx));
18 # include "processor_32.h"
20 # include "processor_64.h"
23 #ifndef CONFIG_PARAVIRT
24 #define __cpuid native_cpuid
28 * Generic CPUID function
29 * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
30 * resulting in stale register contents being returned.
32 static inline void cpuid(unsigned int op,
33 unsigned int *eax, unsigned int *ebx,
34 unsigned int *ecx, unsigned int *edx)
38 __cpuid(eax, ebx, ecx, edx);
41 /* Some CPUID calls want 'count' to be placed in ecx */
42 static inline void cpuid_count(unsigned int op, int count,
43 unsigned int *eax, unsigned int *ebx,
44 unsigned int *ecx, unsigned int *edx)
48 __cpuid(eax, ebx, ecx, edx);
52 * CPUID functions returning a single datum
54 static inline unsigned int cpuid_eax(unsigned int op)
56 unsigned int eax, ebx, ecx, edx;
58 cpuid(op, &eax, &ebx, &ecx, &edx);
61 static inline unsigned int cpuid_ebx(unsigned int op)
63 unsigned int eax, ebx, ecx, edx;
65 cpuid(op, &eax, &ebx, &ecx, &edx);
68 static inline unsigned int cpuid_ecx(unsigned int op)
70 unsigned int eax, ebx, ecx, edx;
72 cpuid(op, &eax, &ebx, &ecx, &edx);
75 static inline unsigned int cpuid_edx(unsigned int op)
77 unsigned int eax, ebx, ecx, edx;
79 cpuid(op, &eax, &ebx, &ecx, &edx);