From patchwork Sun Oct 15 20:59:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bastian Koppelmann X-Patchwork-Id: 13422343 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EBCD4CDB47E for ; Sun, 15 Oct 2023 21:01:15 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qs8D0-00050B-CR; Sun, 15 Oct 2023 16:59:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qs8Cy-0004zX-T9 for qemu-devel@nongnu.org; Sun, 15 Oct 2023 16:59:32 -0400 Received: from hoth.uni-paderborn.de ([2001:638:502:c003::19]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qs8Cx-0007SD-6e for qemu-devel@nongnu.org; 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envelope-from=kbastian@mail.uni-paderborn.de; helo=hoth.uni-paderborn.de X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, 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 Signed-off-by: Bastian Koppelmann --- target/tricore/tricore-semi.c | 101 ++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) diff --git a/target/tricore/tricore-semi.c b/target/tricore/tricore-semi.c index 2188ceeed0..34e546c3bf 100644 --- a/target/tricore/tricore-semi.c +++ b/target/tricore/tricore-semi.c @@ -73,6 +73,21 @@ enum { TARGET_ENAMETOOLONG = 9 }; +enum { + TARGET_O_RDONLY = 0x00001, + TARGET_O_WRONLY = 0x00002, + TARGET_O_RDWR = 0x00003, + TARGET_O_APPEND = 0x00008, + TARGET_O_CREAT = 0x00200, + TARGET_O_TRUNC = 0x00400, + TARGET_O_EXCL = 0x00800, + TARGET_O_NDELAY = 0x01000, + TARGET_O_SYNC = 0x02000, + TARGET_O_NONBLOCK = 0x04000, + TARGET_O_NOCTTY = 0x08000, + TARGET_O_BINARY = 0x10000, +}; + static int tricore_vio_errno_h2g(int host_errno) { @@ -152,6 +167,49 @@ tricore_vio_errno_h2g(int host_errno) } } +static int tricore_vio_open_flags_g2h(int guest_flags) +{ + int host_flags = guest_flags & 0x3; + if (guest_flags & TARGET_O_APPEND) { + host_flags |= O_APPEND; + } + + if (guest_flags & TARGET_O_CREAT) { + host_flags |= O_CREAT; + } + + if (guest_flags & TARGET_O_TRUNC) { + host_flags |= O_TRUNC; + } + + if (guest_flags & TARGET_O_EXCL) { + host_flags |= O_EXCL; + } + + if (guest_flags & TARGET_O_NDELAY) { + host_flags |= O_NDELAY; + } + + if (guest_flags & TARGET_O_SYNC) { + host_flags |= O_SYNC; + } + + if (guest_flags & TARGET_O_NONBLOCK) { + host_flags |= O_NONBLOCK; + } + + if (guest_flags & TARGET_O_NOCTTY) { + host_flags |= O_NOCTTY; + } +#ifdef O_BINARY + if (guest_flags & TARGET_O_BINARY) { + host_flags |= O_BINARY; + } +#endif + + return host_flags; +} + /* * Set return and errno values; the ___virtio function takes care * that the target's errno variable gets updated from %d12, and @@ -164,6 +222,43 @@ static void tricore_vio_set_result(CPUTriCoreState *env, int retval, env->gpr_d[12] = tricore_vio_errno_h2g(host_errno); } +static void tricore_vio_opencreat(CPUTriCoreState *env, bool do_creat) +{ + CPUState *cs = env_cpu(env); + char name[1024]; + int rc, i, res; + uint32_t nameptr = env->gpr_a[4]; + for (i = 0; i < ARRAY_SIZE(name); ++i) { + rc = cpu_memory_rw_debug(cs, nameptr + i, (uint8_t *)name + i, 1, 0); + if (rc != 0 || name[i] == 0) { + break; + } + } + + if (rc == 0 && i < ARRAY_SIZE(name)) { + if (do_creat) { + /* Infineon's TSIM hardcodes 'mode' */ + res = creat(name, S_IROTH | S_IRUSR | S_IWUSR | S_IRGRP); + } else { + int flags = tricore_vio_open_flags_g2h(env->gpr_d[4]); + res = open(name, flags); + } + tricore_vio_set_result(env, res, errno); + } else { + tricore_vio_set_result(env, -1, EIO); + } +} + +static void tricore_vio_open(CPUTriCoreState *env) +{ + tricore_vio_opencreat(env, false); +} + +static void tricore_vio_creat(CPUTriCoreState *env) +{ + tricore_vio_opencreat(env, true); +} + static void tricore_vio_close(CPUTriCoreState *env) { int fd = env->gpr_d[4]; @@ -258,6 +353,9 @@ void helper_tricore_semihost(CPUTriCoreState *env, uint32_t pc) syscall = (int)env->gpr_d[12]; switch (syscall) { + case SYS__OPEN: + tricore_vio_open(env); + break; case SYS__CLOSE: tricore_vio_close(env); break; @@ -270,6 +368,9 @@ void helper_tricore_semihost(CPUTriCoreState *env, uint32_t pc) case SYS__WRITE: tricore_vio_write(env); break; + case SYS__CREAT: + tricore_vio_creat(env); + break; default: qemu_log_mask(LOG_GUEST_ERROR, "%s(%d): not implemented\n", __func__, syscall);