diff options
| author | Sergey Fedorov <serge.fdrv@gmail.com> | 2016-04-09 01:00:23 +0300 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-05-12 14:06:42 -1000 |
| commit | 90aa39a1cc4837360889f0e033ca25cc82100308 (patch) | |
| tree | b8f857f456fec4ecd5b5931f41c7b17b52a353eb /target-cris | |
| parent | 5b053a4a28278bca606eeff7d1c0730df1b047e9 (diff) | |
| download | qemu-90aa39a1cc4837360889f0e033ca25cc82100308.zip qemu-90aa39a1cc4837360889f0e033ca25cc82100308.tar.gz qemu-90aa39a1cc4837360889f0e033ca25cc82100308.tar.bz2 | |
tcg: Allow goto_tb to any target PC in user mode
In user mode, there's only a static address translation, TBs are always
invalidated properly and direct jumps are reset when mapping change.
Thus the destination address is always valid for direct jumps and
there's no need to restrict it to the pages the TB resides in.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Blue Swirl <blauwirbel@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-cris')
| -rw-r--r-- | target-cris/translate.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/target-cris/translate.c b/target-cris/translate.c index 9c8ff8f..f28b199 100644 --- a/target-cris/translate.c +++ b/target-cris/translate.c @@ -520,16 +520,22 @@ static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false) gen_set_label(l1); } -static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) +static inline bool use_goto_tb(DisasContext *dc, target_ulong dest) { - TranslationBlock *tb; - tb = dc->tb; +#ifndef CONFIG_USER_ONLY + return (dc->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || + (dc->ppc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK); +#else + return true; +#endif +} - if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || - (dc->ppc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { +static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) +{ + if (use_goto_tb(dc, dest)) { tcg_gen_goto_tb(n); tcg_gen_movi_tl(env_pc, dest); - tcg_gen_exit_tb((uintptr_t)tb + n); + tcg_gen_exit_tb((uintptr_t)dc->tb + n); } else { tcg_gen_movi_tl(env_pc, dest); tcg_gen_exit_tb(0); |