Don't emit SSE2 instructions unless were asked to.
PR: 1073
diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index 9ad9435..3d5d16b 100644
--- a/crypto/x86cpuid.pl
+++ b/crypto/x86cpuid.pl
@@ -5,6 +5,8 @@
&asm_init($ARGV[0],"x86cpuid");
+for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
+
&function_begin("OPENSSL_ia32_cpuid");
&xor ("edx","edx");
&pushf ();
@@ -115,17 +117,19 @@
&mov ("ecx",&DWP(0,"ecx"));
&bt (&DWP(0,"ecx"),1);
&jnc (&label("no_x87"));
- &bt (&DWP(0,"ecx"),26);
- &jnc (&label("no_sse2"));
- &pxor ("xmm0","xmm0");
- &pxor ("xmm1","xmm1");
- &pxor ("xmm2","xmm2");
- &pxor ("xmm3","xmm3");
- &pxor ("xmm4","xmm4");
- &pxor ("xmm5","xmm5");
- &pxor ("xmm6","xmm6");
- &pxor ("xmm7","xmm7");
-&set_label("no_sse2");
+ if ($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...
&data_word(0xeed9eed9,0xeed9eed9,0xeed9eed9,0xeed9eed9);
&emms ();
