diff options
Diffstat (limited to 'crypto/x86cpuid.pl')
| -rw-r--r-- | crypto/x86cpuid.pl | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl index ce9b8ea..0fb0657 100644 --- a/crypto/x86cpuid.pl +++ b/crypto/x86cpuid.pl @@ -19,7 +19,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &pop ("eax"); &xor ("ecx","eax"); &bt ("ecx",21); - &jnc (&label("nocpuid")); + &jnc (&label("done")); &xor ("eax","eax"); &cpuid (); &xor ("eax","eax"); @@ -34,17 +34,20 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &or ("ebp","eax"); &mov ("eax",1); &cpuid (); - &bt ("edx",28); # test hyper-threading bit - &jnc (&label("nocpuid")); &cmp ("ebp",0); - &jne (&label("notintel")); + &jne (&label("notP4")); + &and (&HB("eax"),15); # familiy ID + &cmp (&HB("eax"),15); # P4? + &jne (&label("notP4")); &or ("edx",1<<20); # use reserved bit to engage RC4_CHAR -&set_label("notintel"); +&set_label("notP4"); + &bt ("edx",28); # test hyper-threading bit + &jnc (&label("done")); &shr ("ebx",16); &cmp (&LB("ebx"),1); # see if cache is shared(*) - &ja (&label("nocpuid")); + &ja (&label("done")); &and ("edx",0xefffffff); # clear hyper-threading bit if not -&set_label("nocpuid"); +&set_label("done"); &mov ("eax","edx"); &mov ("edx","ecx"); &function_end("OPENSSL_ia32_cpuid"); |