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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-06-20 16:44:32 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-07-09 09:42:28 -0700 |
| commit | 95cc1cb39e12fbb5cca3688f8a7ce22116846520 (patch) | |
| tree | 384cb920a7eb3b065c2b74973a8f313d272813ac /target/s390x | |
| parent | 7379c0c82e8164b55dbf605ba9b3988442a73025 (diff) | |
| download | qemu-95cc1cb39e12fbb5cca3688f8a7ce22116846520.zip qemu-95cc1cb39e12fbb5cca3688f8a7ce22116846520.tar.gz qemu-95cc1cb39e12fbb5cca3688f8a7ce22116846520.tar.bz2 | |
target/s390x: Remove use_exit_tb
We have not needed to end a TB for I/O since ba3e7926691
("icount: clean up cpu_can_io at the entry to the block").
In use_goto_tb, the check for singlestep_enabled is in the
generic translator_use_goto_tb. In s390x_tr_tb_stop, the
check for singlestep_enabled is in the preceding do_debug test.
Which leaves only FLAG_MASK_PER: fold that test alone into
the two callers of use_exit tb.
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/s390x')
| -rw-r--r-- | target/s390x/translate.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/target/s390x/translate.c b/target/s390x/translate.c index 767e77c..0cfe29d 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -684,16 +684,9 @@ static void gen_op_calc_cc(DisasContext *s) set_cc_static(s); } -static bool use_exit_tb(DisasContext *s) -{ - return s->base.singlestep_enabled || - (tb_cflags(s->base.tb) & CF_LAST_IO) || - (s->base.tb->flags & FLAG_MASK_PER); -} - static bool use_goto_tb(DisasContext *s, uint64_t dest) { - if (unlikely(use_exit_tb(s))) { + if (unlikely(s->base.tb->flags & FLAG_MASK_PER)) { return false; } return translator_use_goto_tb(&s->base, dest); @@ -6633,7 +6626,7 @@ static void s390x_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs) /* Exit the TB, either by raising a debug exception or by return. */ if (dc->do_debug) { gen_exception(EXCP_DEBUG); - } else if (use_exit_tb(dc) || + } else if ((dc->base.tb->flags & FLAG_MASK_PER) || dc->base.is_jmp == DISAS_PC_STALE_NOCHAIN) { tcg_gen_exit_tb(NULL, 0); } else { |