target/nios2: in line the semantics of DISAS_UPDATE with other targets

In line the semantics of DISAS_UPDATE on nios2 target with other targets
which is to explicitly write the PC back into the cpu state before doing
a tcg_gen_exit_tb().

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Message-id: 20200710233433.19729-2-wentong.wu@intel.com
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index 00b591cc298bbeb8c66794f324157106bf4c0542..c2a134f932db0977d730748b244cdf61991c9942 100644 (file)
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -865,6 +865,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
     /* Indicate where the next block should start */
     switch (dc->is_jmp) {
     case DISAS_NEXT:
+    case DISAS_UPDATE:
         /* Save the current PC back into the CPU register */
         tcg_gen_movi_tl(cpu_R[R_PC], dc->pc);
         tcg_gen_exit_tb(NULL, 0);
@@ -872,7 +873,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
 
     default:
     case DISAS_JUMP:
-    case DISAS_UPDATE:
         /* The jump will already have updated the PC register */
         tcg_gen_exit_tb(NULL, 0);
         break;