From eefacd1dfe38a3334d2e1c44fee0d7b0fdd5d252 Mon Sep 17 00:00:00 2001
From: Greentime Hu <greentime@andestech.com>
Date: Wed, 25 Oct 2017 11:16:56 +0800
Subject: nds32: VDSO support

This patch adds VDSO support. The VDSO code is currently used for
sys_rt_sigreturn() and optimised gettimeofday() (using the SoC timer counter).

Signed-off-by: Vincent Chen <vincentc@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/nds32/kernel/vdso/gen_vdso_offsets.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100755 arch/nds32/kernel/vdso/gen_vdso_offsets.sh

(limited to 'arch/nds32/kernel/vdso/gen_vdso_offsets.sh')

diff --git a/arch/nds32/kernel/vdso/gen_vdso_offsets.sh b/arch/nds32/kernel/vdso/gen_vdso_offsets.sh
new file mode 100755
index 000000000000..01924ff071ad
--- /dev/null
+++ b/arch/nds32/kernel/vdso/gen_vdso_offsets.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+#
+# Match symbols in the DSO that look like VDSO_*; produce a header file
+# of constant offsets into the shared object.
+#
+# Doing this inside the Makefile will break the $(filter-out) function,
+# causing Kbuild to rebuild the vdso-offsets header file every time.
+#
+# Author: Will Deacon <will.deacon@arm.com
+#
+
+LC_ALL=C
+sed -n -e 's/^00*/0/' -e \
+'s/^\([0-9a-fA-F]*\) . VDSO_\([a-zA-Z0-9_]*\)$/\#define vdso_offset_\2\t0x\1/p'
-- 
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