target-arm: Support coprocessor registers which do I/O
Add an ARM_CP_IO flag which an ARMCPRegInfo definition can use to indicate that the register's implementation does I/O and thus its accesses need to be surrounded by gen_io_start()/gen_io_end() in order for icount to work. Most notably, cp registers which implement clocks or timers need this. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Tested-by: NLaurent Desnogues <laurent.desnogues@gmail.com> Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com> Message-id: 1376065080-26661-3-git-send-email-peter.maydell@linaro.org
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