diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-06-25 20:31:04 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-06-26 14:31:12 +0100 |
| commit | 329833286d7a1b0ef8c7daafe13c6ae32429694e (patch) | |
| tree | 6e71519ab9cbd920bee656676dc7f587df35f86a /target | |
| parent | 14407ec2007e18536ed34772eef46f6e0a0e3d0e (diff) | |
target/arm: Add DISAS_UPDATE_NOCHAIN
Add an option that writes back the PC, like DISAS_UPDATE_EXIT,
but does not exit back to the main loop.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200626033144.790098-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/translate-a64.c | 3 | ||||
| -rw-r--r-- | target/arm/translate.c | 4 | ||||
| -rw-r--r-- | target/arm/translate.h | 2 |
3 files changed, 9 insertions, 0 deletions
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index e4795ae100..027be7d8c2 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -14298,6 +14298,9 @@ static void aarch64_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu) case DISAS_EXIT: tcg_gen_exit_tb(NULL, 0); break; + case DISAS_UPDATE_NOCHAIN: + gen_a64_set_pc_im(dc->base.pc_next); + /* fall through */ case DISAS_JUMP: tcg_gen_lookup_and_goto_ptr(); break; diff --git a/target/arm/translate.c b/target/arm/translate.c index 146ff5ddc2..c39a929b93 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -8874,6 +8874,7 @@ static void arm_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu) case DISAS_NEXT: case DISAS_TOO_MANY: case DISAS_UPDATE_EXIT: + case DISAS_UPDATE_NOCHAIN: gen_set_pc_im(dc, dc->base.pc_next); /* fall through */ default: @@ -8897,6 +8898,9 @@ static void arm_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu) case DISAS_TOO_MANY: gen_goto_tb(dc, 1, dc->base.pc_next); break; + case DISAS_UPDATE_NOCHAIN: + gen_set_pc_im(dc, dc->base.pc_next); + /* fall through */ case DISAS_JUMP: gen_goto_ptr(); break; diff --git a/target/arm/translate.h b/target/arm/translate.h index d5edef2943..6dfe24cedc 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -173,6 +173,8 @@ static inline void disas_set_insn_syndrome(DisasContext *s, uint32_t syn) * return from cpu_tb_exec. */ #define DISAS_EXIT DISAS_TARGET_9 +/* CPU state was modified dynamically; no need to exit, but do not chain. */ +#define DISAS_UPDATE_NOCHAIN DISAS_TARGET_10 #ifdef TARGET_AARCH64 void a64_translate_init(void); |