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trezor-firmware/firmware/ssp.c
2014-04-29 14:38:32 +02:00

41 lines
1.2 KiB
C

/*
* This file is part of the TREZOR project.
*
* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ssp.h"
#include "rng.h"
#include "layout.h"
void *__stack_chk_guard = 0;
void __stack_chk_guard_setup(void)
{
unsigned char * p;
p = (unsigned char *) &__stack_chk_guard;
p[0] = 0;
p[1] = 0;
p[2] = '\n';
p[3] = 0xFF; // random32() & 0xFF;
}
void __attribute__((noreturn)) __stack_chk_fail(void)
{
layoutDialog(DIALOG_ICON_ERROR, NULL, NULL, NULL, "Stack smashing", "detected.", NULL, "Please unplug", "the device.", NULL);
for (;;) {} // loop forever
}