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/* 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 */