diff options
Diffstat (limited to 'arch/arm/machine/ssp.c')
-rw-r--r-- | arch/arm/machine/ssp.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/machine/ssp.c b/arch/arm/machine/ssp.c new file mode 100644 index 00000000..eb923dd8 --- /dev/null +++ b/arch/arm/machine/ssp.c @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2017 Richard Braun. + * + * 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/>. + */ + +#include <stdint.h> + +#include <kern/macros.h> +#include <kern/panic.h> + +#ifdef __LP64__ +#define SSP_GUARD_WORD 0xdeadd00ddeadd00d +#else +#define SSP_GUARD_WORD 0xdeadd00d +#endif + +__used uintptr_t ssp_guard_word = SSP_GUARD_WORD; +__used extern uintptr_t __stack_chk_guard __attribute__((alias("ssp_guard_word"))); + +void ssp_panic(void); + +__used void +ssp_panic(void) +{ + panic("ssp: stack corruption detected"); +} + +__used void __stack_chk_fail(void) __attribute__((alias("ssp_panic"))); |