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28 lines
996 B
28 lines
996 B
/* 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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