From: Andy Polyakov <appro@openssl.org>
Date: Sat, 21 Jul 2007 14:46:27 +0000 (+0000)
Subject: x86*cpuid update.
X-Git-Tag: OpenSSL_0_9_8k^2~769
X-Git-Url: https://git.openssl.org/?a=commitdiff_plain;h=3df2eff4bd39ecdd94fc559acd78e581d302f68d;p=openssl.git

x86*cpuid update.
---

diff --git a/crypto/x86_64cpuid.pl b/crypto/x86_64cpuid.pl
index f90bbc9ab0..e29792a157 100644
--- a/crypto/x86_64cpuid.pl
+++ b/crypto/x86_64cpuid.pl
@@ -134,8 +134,6 @@ OPENSSL_ia32_cpuid:
 
 	mov	\$1,%eax
 	cpuid
-	bt	\$28,%edx		# test hyper-threading bit
-	jnc	.Ldone
 	cmp	\$0,%r9d
 	jne	.Lnotintel
 	or	\$1<<20,%edx		# use reserved bit to engage RC4_CHAR
@@ -144,6 +142,8 @@ OPENSSL_ia32_cpuid:
 	je	.Lnotintel
 	or	\$1<<30,%edx		# use reserved bit to skip unrolled loop
 .Lnotintel:
+	bt	\$28,%edx		# test hyper-threading bit
+	jnc	.Ldone
 	shr	\$16,%ebx
 	cmp	\$1,%bl			# see if cache is shared
 	ja	.Ldone
diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index ce9b8ea4dd..0fb0657fa7 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");