diff options
| author | Emilio G. Cota <cota@braap.org> | 2017-04-26 23:29:14 -0400 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-05 09:25:42 -0700 |
| commit | cedbcb01529cb6cf9a2289cdbebbc63f6149fc18 (patch) | |
| tree | d66d40f19de1ab12a0e59131fc7b2d88f10bd823 /tcg/tcg-op.c | |
| parent | 374aae653499f4d405caf32b7fff0c8639113fe4 (diff) | |
tcg: Introduce goto_ptr opcode and tcg_gen_lookup_and_goto_ptr
Instead of exporting goto_ptr directly to TCG frontends, export
tcg_gen_lookup_and_goto_ptr(), which calls goto_ptr with the pointer
returned by the lookup_tb_ptr() helper. This is the only use case
we have for goto_ptr and lookup_tb_ptr, so having this function is
very convenient. Furthermore, it trivially allows us to avoid calling
the lookup helper if goto_ptr is not implemented by the backend.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1493263764-18657-2-git-send-email-cota@braap.org>
Message-Id: <1493263764-18657-3-git-send-email-cota@braap.org>
Message-Id: <1493263764-18657-4-git-send-email-cota@braap.org>
Message-Id: <1493263764-18657-5-git-send-email-cota@braap.org>
[rth: Squashed 4 related commits.]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/tcg-op.c')
| -rw-r--r-- | tcg/tcg-op.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c index 6b1f41500c..87f673ef49 100644 --- a/tcg/tcg-op.c +++ b/tcg/tcg-op.c @@ -2587,6 +2587,18 @@ void tcg_gen_goto_tb(unsigned idx) tcg_gen_op1i(INDEX_op_goto_tb, idx); } +void tcg_gen_lookup_and_goto_ptr(TCGv addr) +{ + if (TCG_TARGET_HAS_goto_ptr && !qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) { + TCGv_ptr ptr = tcg_temp_new_ptr(); + gen_helper_lookup_tb_ptr(ptr, tcg_ctx.tcg_env, addr); + tcg_gen_op1i(INDEX_op_goto_ptr, GET_TCGV_PTR(ptr)); + tcg_temp_free_ptr(ptr); + } else { + tcg_gen_exit_tb(0); + } +} + static inline TCGMemOp tcg_canonicalize_memop(TCGMemOp op, bool is64, bool st) { /* Trigger the asserts within as early as possible. */ |