target/arm: Make switch_mode() file-local

The switch_mode() function is defined in target/arm/helper.c and used
only in that file and nowhere else, so we can make it file-local
rather than global.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181012144235.19646-3-peter.maydell@linaro.org

1 files changed, 4 insertions, 2 deletions

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 56e4b18ddb..7e822df596 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -56,6 +56,8 @@ static void v8m_security_lookup(CPUARMState *env, uint32_t address,
                                 V8M_SAttributes *sattrs);
 #endif
 
+static void switch_mode(CPUARMState *env, int mode);
+
 static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
 {
     int nregs;
@@ -6316,7 +6318,7 @@ uint32_t HELPER(v7m_tt)(CPUARMState *env, uint32_t addr, uint32_t op)
     return 0;
 }
 
-void switch_mode(CPUARMState *env, int mode)
+static void switch_mode(CPUARMState *env, int mode)
 {
     ARMCPU *cpu = arm_env_get_cpu(env);
 
@@ -6338,7 +6340,7 @@ void aarch64_sync_64_to_32(CPUARMState *env)
 
 #else
 
-void switch_mode(CPUARMState *env, int mode)
+static void switch_mode(CPUARMState *env, int mode)
 {
     int old_mode;
     int i;