diff options
Diffstat (limited to 'crypto/openssl/crypto/perlasm/x86_64-xlate.pl')
| -rwxr-xr-x | crypto/openssl/crypto/perlasm/x86_64-xlate.pl | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/crypto/openssl/crypto/perlasm/x86_64-xlate.pl b/crypto/openssl/crypto/perlasm/x86_64-xlate.pl index f8380f2e9cfa9..29a0eacfd532a 100755 --- a/crypto/openssl/crypto/perlasm/x86_64-xlate.pl +++ b/crypto/openssl/crypto/perlasm/x86_64-xlate.pl @@ -1,5 +1,5 @@ #! /usr/bin/env perl -# Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved. +# Copyright 2005-2019 The OpenSSL Project Authors. All Rights Reserved. # # Licensed under the OpenSSL license (the "License"). You may not use # this file except in compliance with the License. You can obtain a copy @@ -541,6 +541,7 @@ my %globals; ); my ($cfa_reg, $cfa_rsp); + my @cfa_stack; # [us]leb128 format is variable-length integer representation base # 2^128, with most significant bit of each byte being 0 denoting @@ -648,7 +649,13 @@ my %globals; # why it starts with -8. Recall that CFA is top of caller's # stack... /startproc/ && do { ($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 = $$line; last; }; /def_cfa_offset/ @@ -688,6 +695,14 @@ my %globals; cfa_expression($$line))); last; }; + /remember_state/ + && do { push @cfa_stack, [$cfa_reg, $cfa_rsp]; + last; + }; + /restore_state/ + && do { ($cfa_reg, $cfa_rsp) = @{pop @cfa_stack}; + last; + }; } $self->{value} = ".cfi_$dir\t$$line" if ($dir); |