5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
29 lines
996 B
C
29 lines
996 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Amit Bhor, Sameer Dhavale: Codito Technologies 2004
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*/
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#ifndef _ASM_ARC_SIGNAL_H
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#define _ASM_ARC_SIGNAL_H
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/*
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* This is much needed for ARC sigreturn optimization.
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* This allows uClibc to piggback the addr of a sigreturn stub in sigaction,
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* which allows sigreturn based re-entry into kernel after handling signal.
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* W/o this kernel needs to "synthesize" the sigreturn trampoline on user
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* mode stack which in turn forces the following:
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* -TLB Flush (after making the stack page executable)
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* -Cache line Flush (to make I/D Cache lines coherent)
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*/
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#define SA_RESTORER 0x04000000
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#include <asm-generic/signal.h>
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#endif /* _ASM_ARC_SIGNAL_H */
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