X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=crypto%2Fx86cpuid.pl;h=86772329bc7bd5a2492e59fdddb25e7901b0f6c2;hb=750487899ad2b794078ed998b513a4a14f60f2cc;hp=3b6c469d082613eec9e2078c859cc87277035156;hpb=c5cd28bd64fa2b02f29e74486539e4b2f6741114;p=openssl.git

diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index 3b6c469d08..86772329bc 100644
--- a/crypto/x86cpuid.pl
+++ b/crypto/x86cpuid.pl
@@ -69,6 +69,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&inc	("esi");		# number of cores
 
 	&mov	("eax",1);
+	&xor	("ecx","ecx");
 	&cpuid	();
 	&bt	("edx",28);
 	&jnc	(&label("generic"));
@@ -80,6 +81,16 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&jmp	(&label("generic"));
 	
 &set_label("intel");
+	&cmp	("edi",7);
+	&jb	(&label("cacheinfo"));
+
+	&mov	("esi",&wparam(0));
+	&mov	("eax",7);
+	&xor	("ecx","ecx");
+	&cpuid	();
+	&mov	(&DWP(8,"esi"),"ebx");
+
+&set_label("cacheinfo");
 	&cmp	("edi",4);
 	&mov	("edi",-1);
 	&jb	(&label("nocacheinfo"));
@@ -91,17 +102,9 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&shr	("edi",14);
 	&and	("edi",0xfff);		# number of cores -1 per L1D
 
-	&cmp	("edi",7);
-	&jb	(&label("nocacheinfo"));
-
-	&mov	("esi",&wparam(0));
-	&mov	("eax",7);
-	&xor	("ecx","ecx");
-	&cpuid	();
-	&mov	(&DWP(8,"esi"),"ebx");
-
 &set_label("nocacheinfo");
 	&mov	("eax",1);
+	&xor	("ecx","ecx");
 	&cpuid	();
 	&and	("edx",0xbfefffff);	# force reserved bits #20, #30 to 0
 	&cmp	("ebp",0);
@@ -466,6 +469,18 @@ my $max = "ebp";
 	&ret	();
 &function_end_B("OPENSSL_ia32_rdrand");
 
+&function_begin_B("OPENSSL_ia32_rdseed");
+	&mov	("ecx",8);
+&set_label("loop");
+	&rdseed	("eax");
+	&jc	(&label("break"));
+	&loop	(&label("loop"));
+&set_label("break");
+	&cmp	("eax",0);
+	&cmove	("eax","ecx");
+	&ret	();
+&function_end_B("OPENSSL_ia32_rdseed");
+
 &initseg("OPENSSL_cpuid_setup");
 
 &hidden("OPENSSL_cpuid_setup");