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Sun, 15 Oct 2023 16:48:04 -0700 (PDT) Message-ID: Date: Sun, 15 Oct 2023 16:48:02 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/6] target/tricore: Add read and write semihosting calls Content-Language: en-US To: Bastian Koppelmann , qemu-devel@nongnu.org References: <20231015205913.264782-1-kbastian@mail.uni-paderborn.de> <20231015205913.264782-3-kbastian@mail.uni-paderborn.de> From: Richard Henderson In-Reply-To: <20231015205913.264782-3-kbastian@mail.uni-paderborn.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::633; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x633.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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 10/15/23 13:59, Bastian Koppelmann wrote: > Signed-off-by: Bastian Koppelmann > --- > target/tricore/tricore-semi.c | 52 +++++++++++++++++++++++++++++++++++ > 1 file changed, 52 insertions(+) > > diff --git a/target/tricore/tricore-semi.c b/target/tricore/tricore-semi.c > index 27e1bdc59d..ccbeae4bc0 100644 > --- a/target/tricore/tricore-semi.c > +++ b/target/tricore/tricore-semi.c > @@ -164,6 +164,52 @@ static void tricore_vio_set_result(CPUTriCoreState *env, int retval, > env->gpr_d[12] = tricore_vio_errno_h2g(host_errno); > } > > +static void tricore_vio_readwrite(CPUTriCoreState *env, bool is_write) > +{ > + CPUState *cs = env_cpu(env); > + hwaddr paddr, sz; > + uint32_t page_left, io_sz, vaddr; > + size_t count; > + ssize_t ret = 0; > + > + int fd = env->gpr_d[4]; > + vaddr = env->gpr_a[4]; > + count = env->gpr_d[5]; > + > + while (count > 0) { > + paddr = cpu_get_phys_page_debug(cs, vaddr); > + page_left = TARGET_PAGE_SIZE - (vaddr & (TARGET_PAGE_SIZE - 1)); > + io_sz = page_left < count ? page_left : count; > + sz = io_sz; > + void *buf = cpu_physical_memory_map(paddr, &sz, true); > + > + if (buf) { > + vaddr += io_sz; > + count -= io_sz; > + ret = is_write ? > + write(fd, buf, io_sz) : > + read(fd, buf, io_sz); You should be able to use "semihosting/syscalls.h". Compare m68k-semi.c. r~