avutil/x86/cpu: fix cpuid sub-leaf selection

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · e58fc44649
parent 233d1acb70
commit e58fc44649
1 changed files with 1 additions and 1 deletions
--- a/libavutil/x86/cpu.c
+++ b/libavutil/x86/cpu.c
@ -45,7 +45,7 @@
        "cpuid                       \n\t"                      \
        "xchg   %%"REG_b", %%"REG_S                             \
        : "=a" (eax), "=S" (ebx), "=c" (ecx), "=d" (edx)        \
-        : "0" (index))
+        : "0" (index), "2"(0))
 #define xgetbv(index, eax, edx)                                 \
    __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (index))