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| author | Alex Bennée <alex.bennee@linaro.org> | 2017-07-17 13:36:07 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-07-17 13:36:07 +0100 |
| commit | abd1fb0ee2c58b99f4b2d15718f1825fe4984e12 (patch) | |
| tree | d0c161b0978f054310de303c7b90b9b92b599992 /target/arm/translate.h | |
| parent | e8d5230221851e8933811f1579fd13371f576955 (diff) | |
| download | qemu-abd1fb0ee2c58b99f4b2d15718f1825fe4984e12.tar.gz | |
target/arm/translate.h: expand comment on DISAS_EXIT
We already have an exit condition, DISAS_UPDATE which will exit the
run-loop. Expand on the difference with DISAS_EXIT in the comments.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 20170713141928.25419-4-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/translate.h')
| -rw-r--r-- | target/arm/translate.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target/arm/translate.h b/target/arm/translate.h index 15d383d9af..12fd79ba8e 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -140,7 +140,10 @@ static void disas_set_insn_syndrome(DisasContext *s, uint32_t syn) */ #define DISAS_BX_EXCRET 11 /* For instructions which want an immediate exit to the main loop, - * as opposed to attempting to use lookup_and_goto_ptr. + * as opposed to attempting to use lookup_and_goto_ptr. Unlike + * DISAS_UPDATE this doesn't write the PC on exiting the translation + * loop so you need to ensure something (gen_a64_set_pc_im or runtime + * helper) has done so before we reach return from cpu_tb_exec. */ #define DISAS_EXIT 12 |