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Fri, 02 Aug 2024 16:57:43 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Warner Losh , Kyle Evans , Jessica Clarke , Stacey Son , Justin Hibbits Subject: [PATCH 04/17] bsd-user: Implement cpu_copy() Date: Fri, 2 Aug 2024 17:56:04 -0600 Message-ID: <20240802235617.7971-5-imp@bsdimp.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240802235617.7971-1-imp@bsdimp.com> References: <20240802235617.7971-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::d29; envelope-from=imp@bsdimp.com; helo=mail-io1-xd29.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @bsdimp-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1722643132912116600 Content-Type: text/plain; charset="utf-8" From: Stacey Son Catch up with 30ba0ee52d15 and implement cpu_copy(). It's needed for threading. Stacey's original code, with bug fixes from Jessica, Justin and myself. Signed-off-by: Stacey Son Signed-off-by: Jessica Clarke Signed-off-by: Justin Hibbits Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/main.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/bsd-user/main.c b/bsd-user/main.c index 1533fd51168..9ad31bd1efe 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -224,6 +224,37 @@ void init_task_state(TaskState *ts) }; } =20 +CPUArchState *cpu_copy(CPUArchState *env) +{ + CPUState *cpu =3D env_cpu(env); + CPUState *new_cpu =3D cpu_create(cpu_type); + CPUArchState *new_env =3D cpu_env(new_cpu); + CPUBreakpoint *bp; + CPUWatchpoint *wp; + + /* Reset non arch specific state */ + cpu_reset(new_cpu); + + new_cpu->tcg_cflags =3D cpu->tcg_cflags; + memcpy(new_env, env, sizeof(CPUArchState)); + + /* + * Clone all break/watchpoints. + * Note: Once we support ptrace with hw-debug register access, make su= re + * BP_CPU break/watchpoints are handled correctly on clone. + */ + QTAILQ_INIT(&cpu->breakpoints); + QTAILQ_INIT(&cpu->watchpoints); + QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { + cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL); + } + QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { + cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL= ); + } + + return new_env; +} + void gemu_log(const char *fmt, ...) { va_list ap; --=20 2.45.1