summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/arch-x86-common.h9
-rw-r--r--arch/arch-x86.h9
-rw-r--r--arch/arch-x86_64.h9
3 files changed, 18 insertions, 9 deletions
diff --git a/arch/arch-x86-common.h b/arch/arch-x86-common.h
index 78fd40c0..179572d4 100644
--- a/arch/arch-x86-common.h
+++ b/arch/arch-x86-common.h
@@ -3,15 +3,6 @@
#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)
diff --git a/arch/arch-x86.h b/arch/arch-x86.h
index 69cf60b3..49e64dd3 100644
--- a/arch/arch-x86.h
+++ b/arch/arch-x86.h
@@ -1,6 +1,15 @@
#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)
diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index cea0451d..8bdf01e8 100644
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -1,6 +1,15 @@
#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)