#include <string.h>
-static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- asm volatile("cpuid"
- : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
- : "0" (*eax), "2" (*ecx)
- : "memory");
-}
-
static inline void cpuid(unsigned int op,
unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx)
#ifndef ARCH_X86_H
#define ARCH_X86_H
+static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
+{
+ asm volatile("xchgl %%ebx, %1\ncpuid\nxchgl %%ebx, %1"
+ : "=a" (*eax), "=r" (*ebx), "=c" (*ecx), "=d" (*edx)
+ : "0" (*eax)
+ : "memory");
+}
+
#include "arch-x86-common.h"
#define FIO_ARCH (arch_i386)
#ifndef ARCH_X86_64_h
#define ARCH_X86_64_h
+static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
+{
+ asm volatile("cpuid"
+ : "=a" (*eax), "=b" (*ebx), "=r" (*ecx), "=d" (*edx)
+ : "0" (*eax), "2" (*ecx)
+ : "memory");
+}
+
#include "arch-x86-common.h"
#define FIO_ARCH (arch_x86_64)