perlasm/x86*.pl: add endbranch instruction.

For further information see "Control-flow Enforcement Technology
Preview" by Intel.

Reviewed-by: Rich Salz <rsalz@openssl.org>

diff --git a/crypto/perlasm/x86_64-xlate.pl b/crypto/perlasm/x86_64-xlate.pl
index 391362d46ecbabb35729cd8c3efa0cf425364624..885690507ecf53e6279ea17a105aec9a706e6768 100755 (executable)
--- a/crypto/perlasm/x86_64-xlate.pl
+++ b/crypto/perlasm/x86_64-xlate.pl
@@ -864,6 +864,10 @@ my $vprotq = sub {
     }
 };
 
+my $endbranch = sub {
+    (0xf3,0x0f,0x1e,0xfa);
+};
+
 if ($nasm) {
     print <<___;
 default        rel

diff --git a/crypto/perlasm/x86asm.pl b/crypto/perlasm/x86asm.pl
index 4590adee2fd87a3748ac7d9acd94ffa50b076165..1ff46c92ccd305f1867425b8b86ad8480bc0398e 100644 (file)
--- a/crypto/perlasm/x86asm.pl
+++ b/crypto/perlasm/x86asm.pl
@@ -172,6 +172,11 @@ sub ::vprotd
     {  &::generic("vprotd",@_);        }
 }
 
+sub ::endbranch
+{
+    &::data_byte(0xf3,0x0f,0x1e,0xfb);
+}
+
 # label management
 $lbdecor="L";          # local label decoration, set by package
 $label="000";