mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
4372980f58
I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure. Beyond the README
update, the move was just
git mv ports/sysdeps/tile sysdeps/tile
git mv ports/sysdeps/unix/sysv/linux/tile \
sysdeps/unix/sysv/linux/tile
git mv ports/sysdeps/unix/sysv/linux/generic \
sysdeps/unix/sysv/linux/generic
I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d7 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* 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");
|
|
}
|