mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-09-20 15:18:59 +00:00
86 lines
3.7 KiB
C++
86 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stratosphere/fssystem/fssystem_bucket_tree.hpp>
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namespace ams::fssystem::impl {
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class SafeValue {
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public:
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static ALWAYS_INLINE s64 GetInt64(const void *ptr) {
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s64 value;
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std::memcpy(std::addressof(value), ptr, sizeof(s64));
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return value;
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}
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static ALWAYS_INLINE s64 GetInt64(const s64 *ptr) {
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return GetInt64(static_cast<const void *>(ptr));
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}
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static ALWAYS_INLINE s64 GetInt64(const s64 &v) {
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return GetInt64(std::addressof(v));
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}
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static ALWAYS_INLINE void SetInt64(void *dst, const void *src) {
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std::memcpy(dst, src, sizeof(s64));
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}
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static ALWAYS_INLINE void SetInt64(void *dst, const s64 *src) {
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return SetInt64(dst, static_cast<const void *>(src));
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}
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static ALWAYS_INLINE void SetInt64(void *dst, const s64 &v) {
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return SetInt64(dst, std::addressof(v));
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}
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};
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template<typename IteratorType>
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struct BucketTreeNode {
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using Header = BucketTree::NodeHeader;
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Header header;
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s32 GetCount() const { return this->header.count; }
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void *GetArray() { return std::addressof(this->header) + 1; }
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template<typename T> T *GetArray() { return reinterpret_cast<T *>(this->GetArray()); }
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const void *GetArray() const { return std::addressof(this->header) + 1; }
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template<typename T> const T *GetArray() const { return reinterpret_cast<const T *>(this->GetArray()); }
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s64 GetBeginOffset() const { return *this->GetArray<s64>(); }
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s64 GetEndOffset() const { return this->header.offset; }
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IteratorType GetBegin() { return IteratorType(this->GetArray<s64>()); }
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IteratorType GetEnd() { return IteratorType(this->GetArray<s64>()) + this->header.count; }
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IteratorType GetBegin() const { return IteratorType(this->GetArray<s64>()); }
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IteratorType GetEnd() const { return IteratorType(this->GetArray<s64>()) + this->header.count; }
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IteratorType GetBegin(size_t entry_size) { return IteratorType(this->GetArray(), entry_size); }
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IteratorType GetEnd(size_t entry_size) { return IteratorType(this->GetArray(), entry_size) + this->header.count; }
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IteratorType GetBegin(size_t entry_size) const { return IteratorType(this->GetArray(), entry_size); }
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IteratorType GetEnd(size_t entry_size) const { return IteratorType(this->GetArray(), entry_size) + this->header.count; }
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};
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constexpr inline s64 GetBucketTreeEntryOffset(s64 entry_set_offset, size_t entry_size, s32 entry_index) {
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return entry_set_offset + sizeof(BucketTree::NodeHeader) + entry_index * static_cast<s64>(entry_size);
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}
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constexpr inline s64 GetBucketTreeEntryOffset(s32 entry_set_index, size_t node_size, size_t entry_size, s32 entry_index) {
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return GetBucketTreeEntryOffset(entry_set_index * static_cast<s64>(node_size), entry_size, entry_index);
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}
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}
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