| /* 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 */ |
