From f864d2f8304e6be90b4c4e4ac615edc6fcefd4c1 Mon Sep 17 00:00:00 2001
From: GuanXuetao <gxt@mprc.pku.edu.cn>
Date: Sat, 15 Jan 2011 18:20:01 +0800
Subject: [PATCH] unicore32 core architecture: signals handling

This patch implements signals.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
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