shttpd/collateral/spectre.spatch

// s2 - apply Spectre mitigations
// Copyright (C) 2018 Ariadne Devos
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>. */

@ h1_compare @ 
expression dep;
local idexpression a, b;
binary operator op;
@@
// e.g, i < n
- sHT_test_hidden(dep, a op b)
+ sHT_test_hidden2(a, b, a op b)

@ h1_array_loop @
statement T;
identifier i;
idexpression n;
binary operator op;
@@
  for (
  ...;
- i op n
+ sHT_test_hidden2(i, n, i op n)
  ;
  i++)
  T