Commit c6e4fdbf authored by Andy Polyakov's avatar Andy Polyakov
Browse files

crypto/x86_64cpuid.pl: move extended feature detection upwards. 



Exteneded feature flags were not pulled on AMD processors, as result a
number of extensions were effectively masked on Ryzen. It should have
been reported for Excavator since it implements AVX2 extension, but
apparently nobody noticed or cared...

Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
(cherry picked from commit f8418d87)
parent bf1c92fa

crypto/x86_64cpuid.pl

+10 −8
Original line number Diff line number Diff line
@@ -70,6 +70,16 @@ OPENSSL_ia32_cpuid: 
	cpuid

	mov	%eax,%r11d		# max value for standard query level



	cmp	\$7,%eax

	jb	.Lno_extended_info



	mov	\$7,%eax

	xor	%ecx,%ecx

	cpuid

	mov	%ebx,8(%rdi)



.Lno_extended_info:



	xor	%eax,%eax

	cmp	\$0x756e6547,%ebx	# "Genu"

	setne	%al
@@ -134,14 +144,6 @@ OPENSSL_ia32_cpuid: 
	shr	\$14,%r10d

	and	\$0xfff,%r10d		# number of cores -1 per L1D



	cmp	\$7,%r11d

	jb	.Lnocacheinfo



	mov	\$7,%eax

	xor	%ecx,%ecx

	cpuid

	mov	%ebx,8(%rdi)



.Lnocacheinfo:

	mov	\$1,%eax

	cpuid