29 lines
996 B
C
29 lines
996 B
C
|
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* Amit Bhor, Sameer Dhavale: Codito Technologies 2004
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _ASM_ARC_SIGNAL_H
|
||
|
|
#define _ASM_ARC_SIGNAL_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is much needed for ARC sigreturn optimization.
|
||
|
|
* This allows uClibc to piggback the addr of a sigreturn stub in sigaction,
|
||
|
|
* which allows sigreturn based re-entry into kernel after handling signal.
|
||
|
|
* W/o this kernel needs to "synthesize" the sigreturn trampoline on user
|
||
|
|
* mode stack which in turn forces the following:
|
||
|
|
* -TLB Flush (after making the stack page executable)
|
||
|
|
* -Cache line Flush (to make I/D Cache lines coherent)
|
||
|
|
*/
|
||
|
|
#define SA_RESTORER 0x04000000
|
||
|
|
|
||
|
|
#include <asm-generic/signal.h>
|
||
|
|
|
||
|
|
#endif /* _ASM_ARC_SIGNAL_H */
|