x86cpuid.pl: make it work with older CPU.

PR: 3005, from master

diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index 4408ef2936ecff908d7965e2fa9ed718ccfe6331..5096b488c03a4f97f60156e7c6cc63ffc48e3776 100644 (file)
--- a/crypto/x86cpuid.pl
+++ b/crypto/x86cpuid.pl
@@ -33,6 +33,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
        &data_byte(0x0f,0x95,0xc0);     #&setne (&LB("eax"));
        &or     ("ebp","eax");
        &mov    ("eax",1);
+       &xor    ("ecx","ecx");
        &cpuid  ();
        &cmp    ("ebp",0);
        &jne    (&label("notP4"));