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>

diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index b5e88fd..fd3ef2c 100644 (file)
--- 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]) {