From 01be057b33f52f094bff3a79a93d9ca99e27483d Mon Sep 17 00:00:00 2001
From: Douglas Leung <Douglas.Leung@imgtec.com>
Date: Mon, 25 Mar 2013 13:21:11 -0500
Subject: MIPS: microMIPS: Add vdso support.

Support vdso in microMIPS mode.

Signed-off-by: Douglas Leung <Douglas.Leung@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/kernel/signal.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index b5e88fd83277..fd3ef2c2afbc 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -35,6 +35,7 @@
 #include <asm/war.h>
 #include <asm/vdso.h>
 #include <asm/dsp.h>
+#include <asm/inst.h>
 
 #include "signal-common.h"
 
@@ -480,7 +481,15 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
 	sigset_t *oldset = sigmask_to_save();
 	int ret;
 	struct mips_abi *abi = current->thread.abi;
+#ifdef CONFIG_CPU_MICROMIPS
+	void *vdso;
+	unsigned int tmp = (unsigned int)current->mm->context.vdso;
+
+	set_isa16_mode(tmp);
+	vdso = (void *)tmp;
+#else
 	void *vdso = current->mm->context.vdso;
+#endif
 
 	if (regs->regs[0]) {
 		switch(regs->regs[2]) {
-- 
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