Commit 2e826078 authored by David Benjamin's avatar David Benjamin Committed by Kurt Roeckx
Browse files

Check for unpaired .cfi_remember_state 



Reviewed-by: default avatarRichard Levitte <levitte@openssl.org>
GH: #8109
(cherry picked from commit e09633107b7e987b2179850715ba60d8fb069278)
parent 2086edb7

crypto/perlasm/x86_64-xlate.pl

+7 −1
Original line number Diff line number Diff line
@@ -649,7 +649,13 @@ my %globals; 
	    # why it starts with -8. Recall that CFA is top of caller's

	    # stack...

	    /startproc/	&& do {	($cfa_reg, $cfa_rsp) = ("%rsp", -8); last; };

	    /endproc/	&& do {	($cfa_reg, $cfa_rsp) = ("%rsp",  0); last; };

	    /endproc/	&& do {	($cfa_reg, $cfa_rsp) = ("%rsp",  0);

				# .cfi_remember_state directives that are not

				# matched with .cfi_restore_state are

				# unnecessary.

				die "unpaired .cfi_remember_state" if (@cfa_stack);

				last;

			      };

	    /def_cfa_register/

			&& do {	$cfa_reg = $$line; last; };

	    /def_cfa_offset/