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target/s390x: Exit after changing PSW mask

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Exit to cpu loop so we reevaluate cpu_s390x_hw_interrupts.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2017-06-14 12:09:50 -07:00
parent 54e1d4ed1d
commit 542f70c22e
1 changed files with 10 additions and 4 deletions
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14
target/s390x/translate.c
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@ -1173,6 +1173,8 @@ typedef enum {
/* We are exiting the TB, but have neither emitted a goto_tb, nor
updated the PC for the next instruction to be executed. */
EXIT_PC_STALE,
/* We are exiting the TB to the main loop. */
EXIT_PC_STALE_NOCHAIN,
/* We are ending the TB with a noreturn function call, e.g. longjmp.
No following code will be executed. */
EXIT_NORETURN,
@ -3795,7 +3797,8 @@ static ExitStatus op_ssm(DisasContext *s, DisasOps *o)
{
check_privileged(s);
tcg_gen_deposit_i64(psw_mask, psw_mask, o->in2, 56, 8);
return NO_EXIT;
/* Exit to main loop to reevaluate s390_cpu_exec_interrupt. */
return EXIT_PC_STALE_NOCHAIN;
}
static ExitStatus op_stap(DisasContext *s, DisasOps *o)
@ -4038,7 +4041,9 @@ static ExitStatus op_stnosm(DisasContext *s, DisasOps *o)
} else {
tcg_gen_ori_i64(psw_mask, psw_mask, i2 << 56);
}
return NO_EXIT;
/* Exit to main loop to reevaluate s390_cpu_exec_interrupt. */
return EXIT_PC_STALE_NOCHAIN;
}
static ExitStatus op_stura(DisasContext *s, DisasOps *o)
@ -5788,6 +5793,7 @@ void gen_intermediate_code(CPUS390XState *env, struct TranslationBlock *tb)
case EXIT_NORETURN:
break;
case EXIT_PC_STALE:
case EXIT_PC_STALE_NOCHAIN:
update_psw_addr(&dc);
/* FALLTHRU */
case EXIT_PC_UPDATED:
@ -5799,14 +5805,14 @@ void gen_intermediate_code(CPUS390XState *env, struct TranslationBlock *tb)
/* Exit the TB, either by raising a debug exception or by return. */
if (do_debug) {
gen_exception(EXCP_DEBUG);
} else if (use_exit_tb(&dc)) {
} else if (use_exit_tb(&dc) || status == EXIT_PC_STALE_NOCHAIN) {
tcg_gen_exit_tb(0);
} else {
tcg_gen_lookup_and_goto_ptr(psw_addr);
}
break;
default:
abort();
g_assert_not_reached();
}
gen_tb_end(tb, num_insns);