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Diffstat (limited to 'arch/x86/boot/cpuflags.c')
-rw-r--r--arch/x86/boot/cpuflags.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/arch/x86/boot/cpuflags.c b/arch/x86/boot/cpuflags.c
index a83d67ec627d..d75237ba7ce9 100644
--- a/arch/x86/boot/cpuflags.c
+++ b/arch/x86/boot/cpuflags.c
@@ -64,20 +64,11 @@ int has_eflag(unsigned long mask)
return !!((f0^f1) & mask);
}
-/* Handle x86_32 PIC using ebx. */
-#if defined(__i386__) && defined(__PIC__)
-# define EBX_REG "=r"
-#else
-# define EBX_REG "=b"
-#endif
-
void cpuid_count(u32 id, u32 count, u32 *a, u32 *b, u32 *c, u32 *d)
{
- asm volatile(".ifnc %%ebx,%3 ; movl %%ebx,%3 ; .endif \n\t"
- "cpuid \n\t"
- ".ifnc %%ebx,%3 ; xchgl %%ebx,%3 ; .endif \n\t"
- : "=a" (*a), "=c" (*c), "=d" (*d), EBX_REG (*b)
- : "a" (id), "c" (count)
+ asm volatile("cpuid"
+ : "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d)
+ : "0" (id), "2" (count)
);
}