X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;ds=sidebyside;f=crypto%2Fx86cpuid.pl;h=b270b44337d1400960cd3779efd257979fc30d45;hb=e060570e62bf6ca6eeace0b586d263181d69e673;hp=b8961ba4ad6412fce5c669fbbc2b35eddd98e15b;hpb=10fd0b7b55b2d1ec80c17a97bcb96ab353ced152;p=openssl.git

diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index b8961ba4ad..b270b44337 100644
--- a/crypto/x86cpuid.pl
+++ b/crypto/x86cpuid.pl
@@ -19,9 +19,9 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&pushf	();
 	&pop	("eax");
 	&xor	("ecx","eax");
-	&bt	("ecx",21);
-	&jnc	(&label("generic"));
 	&xor	("eax","eax");
+	&bt	("ecx",21);
+	&jnc	(&label("nocpuid"));
 	&cpuid	();
 	&mov	("edi","eax");		# max value for standard query level
 
@@ -67,6 +67,7 @@ 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"));
@@ -91,6 +92,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 
 &set_label("nocacheinfo");
 	&mov	("eax",1);
+	&xor	("ecx","ecx");
 	&cpuid	();
 	&and	("edx",0xbfefffff);	# force reserved bits #20, #30 to 0
 	&cmp	("ebp",0);
@@ -119,10 +121,8 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&mov	("esi","edx");
 	&or	("ebp","ecx");		# merge AMD XOP flag
 
-	&bt	("ecx",26);		# check XSAVE bit
-	&jnc	(&label("done"));
 	&bt	("ecx",27);		# check OSXSAVE bit
-	&jnc	(&label("clear_xmm"));
+	&jnc	(&label("clear_avx"));
 	&xor	("ecx","ecx");
 	&data_byte(0x0f,0x01,0xd0);	# xgetbv
 	&and	("eax",6);
@@ -138,6 +138,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 &set_label("done");
 	&mov	("eax","esi");
 	&mov	("edx","ebp");
+&set_label("nocpuid");
 &function_end("OPENSSL_ia32_cpuid");
 
 &external_label("OPENSSL_ia32cap_P");
@@ -166,7 +167,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&jnz	(&label("nohalt"));	# not enough privileges
 
 	&pushf	();
-	&pop	("eax")
+	&pop	("eax");
 	&bt	("eax",9);
 	&jnc	(&label("nohalt"));	# interrupts are disabled
 
@@ -281,7 +282,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 #	arguments is 1 or 2!
 &function_begin_B("OPENSSL_indirect_call");
 	{
-	my $i,$max=7;		# $max has to be chosen as 4*n-1
+	my ($max,$i)=(7,);	# $max has to be chosen as 4*n-1
 				# in order to preserve eventual
 				# stack alignment
 	&push	("ebp");
@@ -340,6 +341,18 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 	&ret	();
 &function_end_B("OPENSSL_cleanse");
 
+&function_begin_B("OPENSSL_ia32_rdrand");
+	&mov	("ecx",8);
+&set_label("loop");
+	&rdrand	("eax");
+	&jc	(&label("break"));
+	&loop	(&label("loop"));
+&set_label("break");
+	&cmp	("eax",0);
+	&cmove	("eax","ecx");
+	&ret	();
+&function_end_B("OPENSSL_ia32_rdrand");
+
 &initseg("OPENSSL_cpuid_setup");
 
 &asm_finish();