X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fx86cpuid.pl;h=4a58651f0f9d4326971d7ffaf468786b2647c36a;hp=9ad9435ffdc031b3330a71781491d58f3ad09f59;hb=c49a0aa08d39763fc3c894638256d5b2090b8530;hpb=cee73df3bd6dfad96f686b766cc8900f432d23b4

diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index 9ad9435ffd..4a58651f0f 100644
--- a/crypto/x86cpuid.pl
+++ b/crypto/x86cpuid.pl
@@ -5,6 +5,8 @@ require "x86asm.pl";
 
 &asm_init($ARGV[0],"x86cpuid");
 
+for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
+
 &function_begin("OPENSSL_ia32_cpuid");
 	&xor	("edx","edx");
 	&pushf	();
@@ -115,20 +117,21 @@ require "x86asm.pl";
 	&mov	("ecx",&DWP(0,"ecx"));
 	&bt	(&DWP(0,"ecx"),1);
 	&jnc	(&label("no_x87"));
-	&bt	(&DWP(0,"ecx"),26);
-	&jnc	(&label("no_sse2"));
-	&pxor	("xmm0","xmm0");
-	&pxor	("xmm1","xmm1");
-	&pxor	("xmm2","xmm2");
-	&pxor	("xmm3","xmm3");
-	&pxor	("xmm4","xmm4");
-	&pxor	("xmm5","xmm5");
-	&pxor	("xmm6","xmm6");
-	&pxor	("xmm7","xmm7");
-&set_label("no_sse2");
-	# just a bunch of fldz to zap the fp/mm bank...
-	&data_word(0xeed9eed9,0xeed9eed9,0xeed9eed9,0xeed9eed9);
-	&emms	();
+	if ($sse2) {
+		&bt	(&DWP(0,"ecx"),26);
+		&jnc	(&label("no_sse2"));
+		&pxor	("xmm0","xmm0");
+		&pxor	("xmm1","xmm1");
+		&pxor	("xmm2","xmm2");
+		&pxor	("xmm3","xmm3");
+		&pxor	("xmm4","xmm4");
+		&pxor	("xmm5","xmm5");
+		&pxor	("xmm6","xmm6");
+		&pxor	("xmm7","xmm7");
+	&set_label("no_sse2");
+	}
+	# just a bunch of fldz to zap the fp/mm bank followed by finit...
+	&data_word(0xeed9eed9,0xeed9eed9,0xeed9eed9,0xeed9eed9,0x90e3db9b);
 &set_label("no_x87");
 	&lea	("eax",&DWP(4,"esp"));
 	&ret	();