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Thu, 07 Dec 2023 02:54:34 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH 1/2] target/alpha: Extract clk_helper.c from sys_helper.c Date: Thu, 7 Dec 2023 11:54:25 +0100 Message-ID: <20231207105426.49339-2-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231207105426.49339-1-philmd@linaro.org> References: <20231207105426.49339-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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: pass client-ip=2a00:1450:4864:20::433; envelope-from=philmd@linaro.org; helo=mail-wr1-x433.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, T_SCC_BODY_TEXT_LINE=-0.01 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 @linaro.org) X-ZM-MESSAGEID: 1701946550414100009 Except helper_load_pcc(), all helpers from sys_helper.c are system-emulation specific. In preparation of restricting sys_helper.c to system emulation, extract helper_load_pcc() to clk_helper.c. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- target/alpha/clk_helper.c | 32 ++++++++++++++++++++++++++++++++ target/alpha/sys_helper.c | 15 --------------- target/alpha/meson.build | 1 + 3 files changed, 33 insertions(+), 15 deletions(-) create mode 100644 target/alpha/clk_helper.c diff --git a/target/alpha/clk_helper.c b/target/alpha/clk_helper.c new file mode 100644 index 0000000000..26ffc231cd --- /dev/null +++ b/target/alpha/clk_helper.c @@ -0,0 +1,32 @@ +/* + * QEMU Alpha clock helpers. + * + * Copyright (c) 2007 Jocelyn Mayer + * + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#include "qemu/osdep.h" +#include "qemu/timer.h" +#include "exec/helper-proto.h" +#include "cpu.h" + +uint64_t helper_load_pcc(CPUAlphaState *env) +{ +#ifndef CONFIG_USER_ONLY + /* + * In system mode we have access to a decent high-resolution clock. + * In order to make OS-level time accounting work with the RPCC, + * present it with a well-timed clock fixed at 250MHz. + */ + return (((uint64_t)env->pcc_ofs << 32) + | (uint32_t)(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2)); +#else + /* + * In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist. Just pass through + * the host cpu clock ticks. Also, don't bother taking PCC_OFS into + * account. + */ + return (uint32_t)cpu_get_host_ticks(); +#endif +} diff --git a/target/alpha/sys_helper.c b/target/alpha/sys_helper.c index c83c92dd4c..98d9a0fff7 100644 --- a/target/alpha/sys_helper.c +++ b/target/alpha/sys_helper.c @@ -27,21 +27,6 @@ #include "qemu/timer.h" =20 =20 -uint64_t helper_load_pcc(CPUAlphaState *env) -{ -#ifndef CONFIG_USER_ONLY - /* In system mode we have access to a decent high-resolution clock. - In order to make OS-level time accounting work with the RPCC, - present it with a well-timed clock fixed at 250MHz. */ - return (((uint64_t)env->pcc_ofs << 32) - | (uint32_t)(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2)); -#else - /* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist. Just pass through = the host cpu - clock ticks. Also, don't bother taking PCC_OFS into account. */ - return (uint32_t)cpu_get_host_ticks(); -#endif -} - /* PALcode support special instructions */ #ifndef CONFIG_USER_ONLY void helper_tbia(CPUAlphaState *env) diff --git a/target/alpha/meson.build b/target/alpha/meson.build index d3502dd823..ea252c99a5 100644 --- a/target/alpha/meson.build +++ b/target/alpha/meson.build @@ -4,6 +4,7 @@ alpha_ss.add(files( 'fpu_helper.c', 'gdbstub.c', 'helper.c', + 'clk_helper.c', 'int_helper.c', 'mem_helper.c', 'sys_helper.c', --=20 2.41.0