runtime/internal/lib/internal/cpu: use __cpuid_count

runtime/internal/lib/internal/cpu/_wrap/cpu_x86.c

@@ -1,19 +1,12 @@
 #if defined(__GNUC__) || defined(__clang__)
+#include <cpuid.h>
+
 void llgo_getcpuid(unsigned int eax, unsigned int ecx,
                    unsigned int *a, unsigned int *b,
                    unsigned int *c, unsigned int *d)
 {
 #if defined(__i386__) || defined(__x86_64__)
-    __asm__ __volatile__(
-        "pushq %%rbp\n\t"
-        "movq %%rsp, %%rbp\n\t"
-        "andq $-16, %%rsp\n\t" // 16-byte align stack
-        "cpuid\n\t"
-        "movq %%rbp, %%rsp\n\t"
-        "popq %%rbp\n\t"
-        : "=a"(*a), "=b"(*b), "=c"(*c), "=d"(*d)
-        : "a"(eax), "c"(ecx)
-        : "memory");
+    __cpuid_count(eax, ecx, *a, *b, *c, *d);
 #endif
 }
 #else