From: Zhiguo Zhou <zhiguo.zhou@intel.com>
Date: Wed, 14 May 2025 14:30:47 +0000 (+0800)
Subject: Check NASM version for {vex} prefix support
X-Git-Tag: openssl-3.5.1~96
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=59f887330f5ef7d3f4504eb18cfed7cac3d824c2;p=thirdparty%2Fopenssl.git

Check NASM version for {vex} prefix support

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/27632)

(cherry picked from commit b9282ecafa36bf3192bdc2cd54c729fb70a92814)
---

diff --git a/crypto/bn/asm/rsaz-2k-avxifma.pl b/crypto/bn/asm/rsaz-2k-avxifma.pl
index 52af336f0ec..0c962f248dd 100644
--- a/crypto/bn/asm/rsaz-2k-avxifma.pl
+++ b/crypto/bn/asm/rsaz-2k-avxifma.pl
@@ -27,7 +27,6 @@ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
 die "can't locate x86_64-xlate.pl";
 
-# TODO: Find out the version of NASM that supports VEX-encoded AVX-IFMA instructions
 if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
         =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
     $avxifma = ($1>=2.40);
@@ -39,6 +38,11 @@ if (!$avxifma && `$ENV{CC} -v 2>&1`
     $avxifma = ($ver>=16.0);
 }
 
+if ($win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
+       `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)(?:\.([0-9]+))?(rc[0-9]+)?/) {
+    $avxifma = ($1>2.16) + ($1==2.16 && ((!defined($2) && !defined($3)) || (defined($2))));
+}
+
 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
     or die "can't call $xlate: $!";
 *STDOUT=*OUT;
diff --git a/crypto/bn/asm/rsaz-3k-avxifma.pl b/crypto/bn/asm/rsaz-3k-avxifma.pl
index 36c3c288130..a19cb5aaa30 100644
--- a/crypto/bn/asm/rsaz-3k-avxifma.pl
+++ b/crypto/bn/asm/rsaz-3k-avxifma.pl
@@ -27,7 +27,6 @@ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
 die "can't locate x86_64-xlate.pl";
 
-# TODO: Find out the version of NASM that supports VEX-encoded AVX-IFMA instructions
 if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
         =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
     $avxifma = ($1>=2.40);
@@ -39,6 +38,11 @@ if (!$avxifma && `$ENV{CC} -v 2>&1`
     $avxifma = ($ver>=16.0);
 }
 
+if ($win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
+       `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)(?:\.([0-9]+))?(rc[0-9]+)?/) {
+    $avxifma = ($1>2.16) + ($1==2.16 && ((!defined($2) && !defined($3)) || (defined($2))));
+}
+
 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
     or die "can't call $xlate: $!";
 *STDOUT=*OUT;
diff --git a/crypto/bn/asm/rsaz-4k-avxifma.pl b/crypto/bn/asm/rsaz-4k-avxifma.pl
index f472ec2c18a..f15e2d74118 100644
--- a/crypto/bn/asm/rsaz-4k-avxifma.pl
+++ b/crypto/bn/asm/rsaz-4k-avxifma.pl
@@ -27,7 +27,6 @@ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
 die "can't locate x86_64-xlate.pl";
 
-# TODO: Find out the version of NASM that supports VEX-encoded AVX-IFMA instructions
 if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
         =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
     $avxifma = ($1>=2.40);
@@ -39,6 +38,11 @@ if (!$avxifma && `$ENV{CC} -v 2>&1`
     $avxifma = ($ver>=16.0);
 }
 
+if ($win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
+       `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)(?:\.([0-9]+))?(rc[0-9]+)?/) {
+    $avxifma = ($1>2.16) + ($1==2.16 && ((!defined($2) && !defined($3)) || (defined($2))));
+}
+
 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
     or die "can't call $xlate: $!";
 *STDOUT=*OUT;