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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>
This commit is contained in:
Wentong Wu 2020-07-13 14:36:10 +01:00 committed by Peter Maydell
parent 42928f2c9c
commit c769453571
1 changed files with 1 additions and 1 deletions
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2
target/nios2/translate.c
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@ -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;