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Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/generic/____longjmp_chk.c')
-rw-r--r--ports/sysdeps/unix/sysv/linux/generic/____longjmp_chk.c57
1 files changed, 0 insertions, 57 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/generic/____longjmp_chk.c b/ports/sysdeps/unix/sysv/linux/generic/____longjmp_chk.c
deleted file mode 100644
index 579cf3998f..0000000000
--- a/ports/sysdeps/unix/sysv/linux/generic/____longjmp_chk.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/* Copyright (C) 2011-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
- 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 <jmpbuf-offsets.h>
-#include <sysdep.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stackinfo.h>
-
-#ifdef _STACK_GROWS_DOWN
-#define called_from(this, saved) ((this) < (saved))
-#else
-#define called_from(this, saved) ((this) > (saved))
-#endif
-
-extern void ____longjmp_chk (__jmp_buf __env, int __val)
- __attribute__ ((__noreturn__));
-
-void ____longjmp_chk (__jmp_buf env, int val)
-{
- void *this_frame = __builtin_frame_address (0);
- void *saved_frame = JB_FRAME_ADDRESS (env);
- INTERNAL_SYSCALL_DECL (err);
- stack_t ss;
-
- /* If "env" is from a frame that called us, we're all set. */
- if (called_from(this_frame, saved_frame))
- __longjmp (env, val);
-
- /* If we can't get the current stack state, give up and do the longjmp. */
- if (INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &ss) != 0)
- __longjmp (env, val);
-
- /* If we we are executing on the alternate stack and within the
- bounds, do the longjmp. */
- if (ss.ss_flags == SS_ONSTACK &&
- (this_frame >= ss.ss_sp && this_frame < (ss.ss_sp + ss.ss_size)))
- __longjmp (env, val);
-
- __fortify_fail ("longjmp causes uninitialized stack frame");
-}