1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
/* 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 */
|
