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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2022-08-11 11:55:31 +0200 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2022-09-06 08:04:25 +0100 |
| commit | f3b2b81b6fdaacfa8a769ad5834e6f6f129e2119 (patch) | |
| tree | 14fb9e502cc3e2007d7633770b2f6371cf391a05 /include/exec | |
| parent | d64655c2c35d967e9c496937885c511240204e76 (diff) | |
| download | qemu-f3b2b81b6fdaacfa8a769ad5834e6f6f129e2119.zip qemu-f3b2b81b6fdaacfa8a769ad5834e6f6f129e2119.tar.gz qemu-f3b2b81b6fdaacfa8a769ad5834e6f6f129e2119.tar.bz2 | |
accel/tcg: Introduce is_same_page()
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 <alistair.francis@wdc.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20220811095534.241224-3-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[rth: Make the DisasContextBase parameter const.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/exec')
| -rw-r--r-- | include/exec/translator.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/exec/translator.h b/include/exec/translator.h index 7db6845..0d0bf3a 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 */ |