mips: use .set push/pop in asm code

Change-Id: I3e7bc7ffb8d6d0c5d18a6ab38b1a270559a62fb9

1 files changed, 5 insertions, 2 deletions

diff --git a/firmware/target/mips/ingenic_jz47xx/system-target.h b/firmware/target/mips/ingenic_jz47xx/system-target.h
index d8c395cef2..30c1668bf7 100644
--- a/firmware/target/mips/ingenic_jz47xx/system-target.h
+++ b/firmware/target/mips/ingenic_jz47xx/system-target.h
@@ -123,7 +123,10 @@ static inline void core_sleep(void)
 #if CONFIG_CPU == JZ4732 || CONFIG_CPU == JZ4760B
     __cpm_idle_mode();
 #endif
-    asm volatile(".set   mips32r2           \n"
+    asm volatile(
+                 ".set   push               \n"
+                 ".set   mips32r2           \n"
+                 ".set   noreorder          \n"
                  "mfc0   $8, $12            \n" /* mfc t0, $12 */
                  "move   $9, $8             \n" /* move t1, t0 */
                  "la     $10, 0x8000000     \n" /* la t2, 0x8000000 */
@@ -131,7 +134,7 @@ static inline void core_sleep(void)
                  "mtc0   $8, $12            \n" /* mtc t0, $12 */
                  "wait                      \n"
                  "mtc0   $9, $12            \n" /* mtc t1, $12 */
-                 ".set   mips0              \n"
+                 ".set   pop                \n"
                  ::: "t0", "t1", "t2"
                  );
     enable_irq();