diff options
| author | David Benjamin <davidben@google.com> | 2019-01-29 17:41:39 -0600 |
|---|---|---|
| committer | Kurt Roeckx <kurt@roeckx.be> | 2019-02-17 23:41:14 +0100 |
| commit | 2e826078410bdb117710890b0e99bbdbbbf7e95d (patch) | |
| tree | e2db128637b59e4b4777baadaff06ecc6aec378e | |
| parent | 2086edb799acf6ad5ef0bb53aa3b17abf4f7f992 (diff) | |
Check for unpaired .cfi_remember_state
Reviewed-by: Richard Levitte <levitte@openssl.org>
GH: #8109
(cherry picked from commit e09633107b7e987b2179850715ba60d8fb069278)
| -rwxr-xr-x | crypto/perlasm/x86_64-xlate.pl | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/crypto/perlasm/x86_64-xlate.pl b/crypto/perlasm/x86_64-xlate.pl index b81d03a753..1b0bf42f8c 100755 --- a/crypto/perlasm/x86_64-xlate.pl +++ b/crypto/perlasm/x86_64-xlate.pl @@ -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/ |