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Check for unpaired .cfi_remember_state

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Reviewed-by: Richard Levitte <levitte@openssl.org>
GH: #8109
This commit is contained in:
David Benjamin 2019-01-29 17:41:39 -06:00 committed by Kurt Roeckx
parent c0e8e5007b
commit e09633107b
1 changed files with 7 additions and 1 deletions
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8
crypto/perlasm/x86_64-xlate.pl
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@ -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/