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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id x15sm876909iob.8.2021.11.07.19.52.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Nov 2021 19:52:27 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Subject: [PATCH v5 19/37] bsd-user/arm/target_arch_cpu.h: Implement trivial EXCP exceptions Date: Sun, 7 Nov 2021 20:51:18 -0700 Message-Id: <20211108035136.43687-20-imp@bsdimp.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211108035136.43687-1-imp@bsdimp.com> References: <20211108035136.43687-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::d33 (failed) Received-SPF: none client-ip=2607:f8b0:4864:20::d33; envelope-from=imp@bsdimp.com; helo=mail-io1-xd33.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no 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: , Cc: Stacey Son , qemu-trivial@nongnu.org, Kyle Evans , Michael Tokarev , Laurent Vivier , Philippe Mathieu-Daude , =?UTF-8?q?Mika=C3=ABl=20Urankar?= , Richard Henderson , Warner Losh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Implement EXCP_UDEF, EXCP_DEBUG, EXCP_INTERRUPT, EXCP_ATOMIC and EXCP_YIELD. The first two generate a signal to the emulated binary. EXCP_ATOMIC handles atomic operations. The remainder are fancy nops. Signed-off-by: Stacey Son Signed-off-by: Mikaël Urankar Signed-off-by: Kyle Evans Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/arm/target_arch_cpu.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h index 2484bdc2f7..9f9b380b13 100644 --- a/bsd-user/arm/target_arch_cpu.h +++ b/bsd-user/arm/target_arch_cpu.h @@ -48,6 +48,39 @@ static inline void target_cpu_loop(CPUARMState *env) cpu_exec_end(cs); process_queued_cpu_work(cs); switch (trapnr) { + case EXCP_UDEF: + { + /* See arm/arm/undefined.c undefinedinstruction(); */ + info.si_addr = env->regs[15]; + + /* illegal instruction */ + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPC; + queue_signal(env, info.si_signo, &info); + + /* TODO: What about instruction emulation? */ + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_DEBUG: + { + + info.si_signo = TARGET_SIGTRAP; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + info.si_addr = env->exception.vaddress; + queue_signal(env, info.si_signo, &info); + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + case EXCP_YIELD: + /* nothing to do here for user-mode, just resume guest code */ + break; default: fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); -- 2.33.0