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envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x436.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Add a generic version of the common use_goto_tb test. Signed-off-by: Richard Henderson Reviewed-by: Luis Pires Reviewed-by: Max Filippov Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- include/exec/translator.h | 10 ++++++++++ accel/tcg/translator.c | 11 +++++++++++ 2 files changed, 21 insertions(+) diff --git a/include/exec/translator.h b/include/exec/translator.h index 24232ead41..dd9c06d40d 100644 --- a/include/exec/translator.h +++ b/include/exec/translator.h @@ -145,6 +145,16 @@ void translator_loop(const TranslatorOps *ops, DisasCo= ntextBase *db, =20 void translator_loop_temp_check(DisasContextBase *db); =20 +/** + * translator_use_goto_tb + * @db: Disassembly context + * @dest: target pc of the goto + * + * Return true if goto_tb is allowed between the current TB + * and the destination PC. + */ +bool translator_use_goto_tb(DisasContextBase *db, target_ulong dest); + /* * Translator Load Functions * diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c index 1d32732198..59804af37b 100644 --- a/accel/tcg/translator.c +++ b/accel/tcg/translator.c @@ -31,6 +31,17 @@ void translator_loop_temp_check(DisasContextBase *db) } } =20 +bool translator_use_goto_tb(DisasContextBase *db, target_ulong dest) +{ + /* Suppress goto_tb in the case of single-steping. */ + if (db->singlestep_enabled || singlestep) { + return false; + } + + /* Check for the dest on the same page as the start of the TB. */ + return ((db->pc_first ^ dest) & TARGET_PAGE_MASK) =3D=3D 0; +} + void translator_loop(const TranslatorOps *ops, DisasContextBase *db, CPUState *cpu, TranslationBlock *tb, int max_insns) { --=20 2.25.1