From: Ilya Leoshkevich <[email protected]> Introduce a function that checks whether a given address is on the same page as where disassembly started. Having it improves readability of the following patches.
Reviewed-by: Alistair Francis <[email protected]> Signed-off-by: Ilya Leoshkevich <[email protected]> Message-Id: <[email protected]> Reviewed-by: Richard Henderson <[email protected]> [rth: Make the DisasContextBase parameter const.] Signed-off-by: Richard Henderson <[email protected]> --- include/exec/translator.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/exec/translator.h b/include/exec/translator.h index 7db6845535..0d0bf3a31e 100644 --- a/include/exec/translator.h +++ b/include/exec/translator.h @@ -187,4 +187,14 @@ FOR_EACH_TRANSLATOR_LD(GEN_TRANSLATOR_LD) #undef GEN_TRANSLATOR_LD +/* + * Return whether addr is on the same page as where disassembly started. + * Translators can use this to enforce the rule that only single-insn + * translation blocks are allowed to cross page boundaries. + */ +static inline bool is_same_page(const DisasContextBase *db, target_ulong addr) +{ + return ((addr ^ db->pc_first) & TARGET_PAGE_MASK) == 0; +} + #endif /* EXEC__TRANSLATOR_H */ -- 2.34.1
