commit f309101c26b59641fc1aa8fb2a98a5441cdaea03
author Sergey Fedorov <serge.fdrv@gmail.com> Sun Apr 10 23:35:45 2016 +0300
committer Richard Henderson <rth@twiddle.net> Thu May 12 14:06:41 2016 -1000
tree 9c0509fddf84c84027cc9bf8292219c3dbe62c12
parent 7ba6a512ae439c98c0c1f0f4348c079d90f9dd9d

tcg: Clean up direct block chaining data fields

Briefly describe in a comment how direct block chaining is done. It
should help in understanding of the following data fields.

Rename some fields in TranslationBlock and TCGContext structures to
better reflect their purpose (dropping excessive 'tb_' prefix in
TranslationBlock but keeping it in TCGContext):
   tb_next_offset  =>  jmp_reset_offset
   tb_jmp_offset   =>  jmp_insn_offset
   tb_next         =>  jmp_target_addr
   jmp_next        =>  jmp_list_next
   jmp_first       =>  jmp_list_first

Avoid using a magic constant as an invalid offset which is used to
indicate that there's no n-th jump generated.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>