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authorWentong Wu <wentong.wu@intel.com>2020-07-13 14:36:10 +0100
committerPeter Maydell <peter.maydell@linaro.org>2020-07-13 14:36:10 +0100
commit42928f2c9cd6185e3bda5e214f5c8f3603125ba9 (patch)
treec0e1f313182d1a4341bdb6299f80cc8b018c1424 /target/nios2
parent0b823cb07eade4e7e133cc09dfaccceec04cb6a2 (diff)
target/nios2: add DISAS_NORETURN case for nothing more to generate
Add DISAS_NORETURN case for nothing more to generate because at runtime execution will never return from some helper call. And at the same time replace DISAS_UPDATE in t_gen_helper_raise_exception and gen_exception with the newly added DISAS_NORETURN. Signed-off-by: Wentong Wu <wentong.wu@intel.com> Message-id: 20200710233433.19729-1-wentong.wu@intel.com Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/nios2')
-rw-r--r--target/nios2/translate.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index 6c34cd3193..00b591cc29 100644
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -149,7 +149,7 @@ static void t_gen_helper_raise_exception(DisasContext *dc,
tcg_gen_movi_tl(dc->cpu_R[R_PC], dc->pc);
gen_helper_raise_exception(dc->cpu_env, tmp);
tcg_temp_free_i32(tmp);
- dc->is_jmp = DISAS_UPDATE;
+ dc->is_jmp = DISAS_NORETURN;
}
static bool use_goto_tb(DisasContext *dc, uint32_t dest)
@@ -802,7 +802,7 @@ static void gen_exception(DisasContext *dc, uint32_t excp)
tcg_gen_movi_tl(cpu_R[R_PC], dc->pc);
gen_helper_raise_exception(cpu_env, tmp);
tcg_temp_free_i32(tmp);
- dc->is_jmp = DISAS_UPDATE;
+ dc->is_jmp = DISAS_NORETURN;
}
/* generate intermediate code for basic block 'tb'. */
@@ -877,6 +877,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
tcg_gen_exit_tb(NULL, 0);
break;
+ case DISAS_NORETURN:
case DISAS_TB_JUMP:
/* nothing more to generate */
break;