target/nios2: Use gen_goto_tb for DISAS_TOO_MANY

Depending on the reason for ending the TB, we can chain
to the next TB because the PC is constant.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-51-richard.henderson@linaro.org>

diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index a55270cefad941175b457babc529d466ef13a375..87f3e57d4c93106426c393a60346a0d529610ed6 100644 (file)
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -905,8 +905,11 @@ static void nios2_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
     /* Indicate where the next block should start */
     switch (dc->base.is_jmp) {
     case DISAS_TOO_MANY:
+        gen_goto_tb(dc, 0, dc->base.pc_next);
+        break;
+
     case DISAS_UPDATE:
-        /* Save the current PC back into the CPU register */
+        /* Save the current PC, and return to the main loop. */
         tcg_gen_movi_tl(cpu_pc, dc->base.pc_next);
         tcg_gen_exit_tb(NULL, 0);
         break;