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target/arm: Use DISAS_TOO_MANY for ISB and SB 

Using gen_goto_tb directly misses the single-step check.
Let the branch or debug exception be emitted by arm_tr_tb_stop.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-06-29 11:01:05 -07:00
parent 21a7e89ece
commit 73fce314db
1 changed files with 2 additions and 2 deletions
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4
target/arm/translate.c
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@ -8904,7 +8904,7 @@ static bool trans_ISB(DisasContext *s, arg_ISB *a)
* self-modifying code correctly and also to take
* any pending interrupts immediately.
*/
gen_goto_tb(s, 0, s->base.pc_next);
s->base.is_jmp = DISAS_TOO_MANY;
return true;
}
@ -8918,7 +8918,7 @@ static bool trans_SB(DisasContext *s, arg_SB *a)
* for TCG; MB and end the TB instead.
*/
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
gen_goto_tb(s, 0, s->base.pc_next);
s->base.is_jmp = DISAS_TOO_MANY;
return true;
}