From c3581039b6c51a778a70accec53a9bb7ad9a4d32 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 18 Jan 2013 15:12:19 +0530 Subject: ARC: Signal handling Includes following fixes courtesy review by Al-Viro * Tracer poke to Callee-regs were lost Before going off into do_signal( ) we save the user-mode callee regs (as they are not saved by default as part of pt_regs). This is to make sure that that a Tracer (if tracing related signal) is able to do likes of PEEKUSR(callee-reg). However in return path we were simply discarding the user-mode callee regs, which would break a POKEUSR(callee-reg) from a tracer. * Issue related to multiple syscall restarts are addressed in next patch Signed-off-by: Vineet Gupta Cc: Al Viro Acked-by: Jonas Bonn --- arch/arc/include/asm/sigcontext.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 arch/arc/include/asm/sigcontext.h (limited to 'arch/arc/include/asm/sigcontext.h') diff --git a/arch/arc/include/asm/sigcontext.h b/arch/arc/include/asm/sigcontext.h new file mode 100644 index 000000000000..9678a11fc158 --- /dev/null +++ b/arch/arc/include/asm/sigcontext.h @@ -0,0 +1,22 @@ +/* + * 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. + */ + +#ifndef _ASM_ARC_SIGCONTEXT_H +#define _ASM_ARC_SIGCONTEXT_H + +#include + +/* + * Signal context structure - contains all info to do with the state + * before the signal handler was invoked. + */ +struct sigcontext { + struct user_regs_struct regs; +}; + +#endif /* _ASM_ARC_SIGCONTEXT_H */ -- cgit v1.2.3