target/arm: use gen_goto_tb for ISB handling
While an ISB will ensure any raised IRQs happen on the next instruction it doesn't cause any to get raised by itself. We can therefore use a simple tb exit for ISB instructions and rely on the exit_request check at the top of each TB to deal with exiting if needed. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-id: 20170713141928.25419-6-alex.bennee@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -1393,7 +1393,7 @@ static void handle_sync(DisasContext *s, uint32_t insn,
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* a self-modified code correctly and also to take
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* any pending interrupts immediately.
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*/
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s->is_jmp = DISAS_UPDATE;
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gen_goto_tb(s, 0, s->pc);
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return;
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default:
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unallocated_encoding(s);
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@ -8169,7 +8169,7 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn)
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* self-modifying code correctly and also to take
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* any pending interrupts immediately.
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*/
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gen_lookup_tb(s);
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gen_goto_tb(s, 0, s->pc & ~1);
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return;
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default:
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goto illegal_op;
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@ -10562,7 +10562,7 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
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* and also to take any pending interrupts
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* immediately.
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*/
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gen_lookup_tb(s);
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gen_goto_tb(s, 0, s->pc & ~1);
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break;
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default:
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goto illegal_op;
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