generic-library/openssl
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x86cpuid.pl: make it work with older CPUs.

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PR: 3005
(cherry picked from commit 5702e965d759dde8a098d8108660721ba2b93a7d)
This commit is contained in:
Andy Polyakov 2013-03-04 20:05:04 +01:00
parent 9ab3ce1246
commit 96b680f210
1 changed files with 2 additions and 0 deletions
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2
crypto/x86cpuid.pl
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@ -67,6 +67,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
&inc ("esi"); # number of cores &inc ("esi"); # number of cores
&mov ("eax",1); &mov ("eax",1);
&xor ("ecx","ecx");
&cpuid (); &cpuid ();
&bt ("edx",28); &bt ("edx",28);
&jnc (&label("generic")); &jnc (&label("generic"));
@ -91,6 +92,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
&set_label("nocacheinfo"); &set_label("nocacheinfo");
&mov ("eax",1); &mov ("eax",1);
&xor ("ecx","ecx");
&cpuid (); &cpuid ();
&and ("edx",0xbfefffff); # force reserved bits #20, #30 to 0 &and ("edx",0xbfefffff); # force reserved bits #20, #30 to 0
&cmp ("ebp",0); &cmp ("ebp",0);