motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 01:33:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg: Introduce goto_ptr opcode and tcg_gen_lookup_and_goto_ptr

Browse source 
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>
This commit is contained in:
Emilio G. Cota 2017-04-26 23:29:14 -04:00 • committed by Richard Henderson
parent 374aae6534
commit cedbcb0152
19 changed files with 85 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

12
tcg/tcg-op.c
View file

@ -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. */