os: implement Tick api, make build with -Werror

libraries/libstratosphere/source/kvdb/kvdb_file_key_value_store.cpp

@@ -222,7 +222,7 @@ namespace ams::kvdb {
         R_UNLESS(file_size <= static_cast<s64>(max_out_size), ResultBufferInsufficient());
 
         /* Read the value. */
-        const size_t value_size = static_cast<size_t>(value_size);
+        const size_t value_size = static_cast<size_t>(file_size);
         R_TRY(fs::ReadFile(file, 0, out_value, value_size));
         *out_size = value_size;
 

libraries/libstratosphere/source/os/impl/os_resource_manager.cpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+#include "os_resource_manager.hpp"
+
+namespace ams::os::impl {
+
+    /* TODO: C++20 constinit */
+    OsResourceManager ResourceManagerHolder::s_resource_manager = {};
+
+}

libraries/libstratosphere/source/os/impl/os_resource_manager.hpp

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+#include "os_tick_manager_impl.hpp"
+
+namespace ams::os::impl {
+
+    class OsResourceManager {
+        private:
+            /* TODO */
+            TickManager tick_manager{};
+            /* TODO */
+        public:
+            constexpr OsResourceManager() = default;
+
+            constexpr ALWAYS_INLINE TickManager &GetTickManager() { return this->tick_manager; }
+    };
+
+    class ResourceManagerHolder {
+        private:
+            static /* TODO: C++20 constinit */ OsResourceManager s_resource_manager;
+        private:
+            constexpr ResourceManagerHolder() { /* ... */ }
+        public:
+            static ALWAYS_INLINE OsResourceManager &GetResourceManagerInstance() {
+                return s_resource_manager;
+            }
+    };
+
+    ALWAYS_INLINE OsResourceManager &GetResourceManager() {
+        return ResourceManagerHolder::GetResourceManagerInstance();
+    }
+
+}

libraries/libstratosphere/source/os/impl/os_tick_manager.hpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+#include "os_resource_manager.hpp"
+
+namespace ams::os::impl {
+
+    ALWAYS_INLINE TickManager &GetTickManager() {
+        return GetResourceManager().GetTickManager();
+    }
+
+    ALWAYS_INLINE Tick GetCurrentTick() {
+        return GetTickManager().GetTick();
+    }
+
+}

libraries/libstratosphere/source/os/impl/os_tick_manager_impl.cpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+#include "os_tick_manager.hpp"
+
+namespace ams::os::impl {
+
+    TimeSpan TickManager::ConvertToTimeSpan(Tick tick) const {
+        /* Get the tick value. */
+        const s64 tick_val  = tick.GetInt64Value();
+
+        /* Get the tick frequency. */
+        const s64 tick_freq = GetTickFrequency();
+        AMS_AUDIT(tick_freq < MaxTickFrequency);
+
+        /* Clamp tick to range. */
+        if (tick_val > GetMaxTick()) {
+            return TimeSpan::FromNanoSeconds(std::numeric_limits<s64>::max());
+        } else if (tick_val < -GetMaxTick()) {
+            return TimeSpan::FromNanoSeconds(std::numeric_limits<s64>::min());
+        } else {
+            /* Convert to timespan. */
+            constexpr s64 NanoSecondsPerSecond = TimeSpan::FromSeconds(1).GetNanoSeconds();
+            const s64 seconds = tick_val / tick_freq;
+            const s64 frac    = tick_val % tick_freq;
+            const TimeSpan ts = TimeSpan::FromSeconds(seconds) + TimeSpan::FromNanoSeconds(frac * NanoSecondsPerSecond / tick_freq);
+
+            constexpr TimeSpan ZeroTS    = TimeSpan::FromNanoSeconds(0);
+            AMS_ASSERT(!((tick_val > 0 && ts < ZeroTS) || (tick_val < 0 && ts > ZeroTS)));
+
+            return ts;
+        }
+    }
+
+    Tick TickManager::ConvertToTick(TimeSpan ts) const {
+        /* Get the TimeSpan in nanoseconds. */
+        const s64 ns = ts.GetNanoSeconds();
+
+        /* Clamp ns to range. */
+        if (ns > GetMaxTimeSpanNs()) {
+            return Tick(std::numeric_limits<s64>::max());
+        } else if (ns < -GetMaxTimeSpanNs()) {
+            return Tick(std::numeric_limits<s64>::min());
+        } else {
+            /* Get the tick frequency. */
+            const s64 tick_freq = GetTickFrequency();
+            AMS_AUDIT(tick_freq < MaxTickFrequency);
+
+            /* Convert to tick. */
+            constexpr s64 NanoSecondsPerSecond = TimeSpan::FromSeconds(1).GetNanoSeconds();
+            const bool negative = ns < 0;
+            s64 seconds   = ns / NanoSecondsPerSecond;
+            s64 frac      = ns % NanoSecondsPerSecond;
+
+            /* If negative, negate seconds/frac. */
+            if (negative) {
+                seconds = -seconds;
+                frac    = -frac;
+            }
+
+            /* Calculate the tick, and invert back to negative if needed. */
+            s64 tick = (seconds * tick_freq) + ((frac * tick_freq + NanoSecondsPerSecond - 1) / NanoSecondsPerSecond);
+            if (negative) {
+                tick = -tick;
+            }
+
+            return Tick(tick);
+        }
+    }
+
+}

libraries/libstratosphere/source/os/impl/os_tick_manager_impl.hpp

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+#ifdef ATMOSPHERE_OS_HORIZON
+    #include "os_tick_manager_impl.os.horizon.hpp"
+#else
+    #error "Unknown OS for TickManagerImpl"
+#endif
+
+namespace ams::os::impl {
+
+    /* Tick frequency must be less than INT64_MAX / 1 second. */
+    static constexpr s64 MaxTickFrequency = (std::numeric_limits<s64>::max() / TimeSpan::FromSeconds(1).GetNanoSeconds()) - 1;
+
+    class TickManager {
+        private:
+            TickManagerImpl impl;
+        public:
+            constexpr TickManager() : impl() { /* ... */ }
+
+            ALWAYS_INLINE Tick GetTick() const {
+                return this->impl.GetTick();
+            }
+
+            ALWAYS_INLINE s64 GetTickFrequency() const {
+                return this->impl.GetTickFrequency();
+            }
+
+            ALWAYS_INLINE s64 GetMaxTick() const {
+                return this->impl.GetMaxTick();
+            }
+
+            ALWAYS_INLINE s64 GetMaxTimeSpanNs() const {
+                return this->impl.GetMaxTimeSpanNs();
+            }
+
+            TimeSpan ConvertToTimeSpan(Tick tick) const;
+            Tick     ConvertToTick(TimeSpan ts) const;
+    };
+
+}

libraries/libstratosphere/source/os/impl/os_tick_manager_impl.os.horizon.hpp

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::os::impl {
+
+    class TickManagerImpl {
+        public:
+            constexpr TickManagerImpl() { /* ... */ }
+
+            ALWAYS_INLINE Tick GetTick() const {
+                s64 tick;
+                __asm__ __volatile__("mrs %[tick], cntpct_el0" : [tick]"=&r"(tick) :: "memory");
+                return Tick(tick);
+            }
+
+            static constexpr ALWAYS_INLINE s64 GetTickFrequency() {
+                return static_cast<s64>(::ams::svc::TicksPerSecond);
+            }
+
+            static constexpr ALWAYS_INLINE s64 GetMaxTick() {
+                static_assert(GetTickFrequency() <= TimeSpan::FromSeconds(1).GetNanoSeconds());
+                return (std::numeric_limits<s64>::max() / TimeSpan::FromSeconds(1).GetNanoSeconds()) * GetTickFrequency();
+            }
+
+            static constexpr ALWAYS_INLINE s64 GetMaxTimeSpanNs() {
+                static_assert(GetTickFrequency() <= TimeSpan::FromSeconds(1).GetNanoSeconds());
+                return TimeSpan::FromNanoSeconds(std::numeric_limits<s64>::max()).GetNanoSeconds();
+            }
+    };
+
+}

libraries/libstratosphere/source/os/os_tick.cpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+#include "impl/os_tick_manager.hpp"
+
+namespace ams::os {
+
+    Tick GetSystemTick() {
+        return impl::GetTickManager().GetTick();
+    }
+
+    s64 GetSystemTickFrequency() {
+        return impl::GetTickManager().GetTickFrequency();
+    }
+
+    TimeSpan ConvertToTimeSpan(Tick tick) {
+        return impl::GetTickManager().ConvertToTimeSpan(tick);
+    }
+
+    Tick ConvertToTick(TimeSpan ts) {
+        return impl::GetTickManager().ConvertToTick(ts);
+    }
+
+}

libraries/libstratosphere/source/patcher/patcher_api.cpp

@@ -237,7 +237,10 @@ namespace ams::patcher {
             }
 
             /* Print the path for this directory. */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-truncation"
             std::snprintf(path + patches_dir_path_len, sizeof(path) - patches_dir_path_len, "/%s", entry.name);
+#pragma GCC diagnostic pop
             const size_t patch_dir_path_len = patches_dir_path_len + 1 + std::strlen(entry.name);
 
             /* Open the patch directory. */

libraries/libstratosphere/source/updater/updater_api.cpp

@@ -115,7 +115,7 @@ namespace ams::updater {
 
         Result VerifyBootImagesAndRepairIfNeeded(bool *out_repaired, BootModeType mode, void *work_buffer, size_t work_buffer_size, BootImageUpdateType boot_image_update_type) {
             /* Get system data id for boot images (819/81A/81B/81C). */
-            ncm::SystemDataId bip_data_id;
+            ncm::SystemDataId bip_data_id = {};
             R_TRY(GetBootImagePackageId(&bip_data_id, mode, work_buffer, work_buffer_size));
 
             /* Verify the boot images in NAND. */