diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/mips/____longjmp_chk.c')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/mips/____longjmp_chk.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/mips/____longjmp_chk.c b/ports/sysdeps/unix/sysv/linux/mips/____longjmp_chk.c new file mode 100644 index 0000000000..d8da27024b --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/mips/____longjmp_chk.c @@ -0,0 +1,41 @@ +/* Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C 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 2.1 of the License, or (at your option) any later version. + + The GNU C 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 the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <signal.h> +#include <stdio.h> +#define __longjmp ____longjmp_chk +#define CHECK_SP(saved_sp, cur_sp, sp_type) \ + do { \ + sp_type sp_saved = (sp_type) (saved_sp); \ + if (sp_saved < (cur_sp)) \ + { \ + struct __jmp_buf_internal_tag *env_save = env_arg; \ + int val_save = val_arg; \ + stack_t ss; \ + int ret = __sigaltstack (NULL, &ss); \ + if (ret == 0 \ + && (!(ss.ss_flags & SS_ONSTACK) \ + || ((unsigned sp_type) ((sp_type) ss.ss_sp \ + + (sp_type) ss.ss_size \ + - sp_saved) \ + < ss.ss_size))) \ + __fortify_fail ("longjmp causes uninitialized stack frame"); \ + asm volatile ("move %0, %1" : "=r" (env) : "r" (env_save)); \ + asm volatile ("move %0, %1" : "=r" (val) : "r" (val_save)); \ + } \ + } while (0) +#include <__longjmp.c> |