diff options
Diffstat (limited to 'src/core/file_sys/fssystem/fssystem_bucket_tree_utils.h')
-rw-r--r-- | src/core/file_sys/fssystem/fssystem_bucket_tree_utils.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/core/file_sys/fssystem/fssystem_bucket_tree_utils.h b/src/core/file_sys/fssystem/fssystem_bucket_tree_utils.h new file mode 100644 index 000000000..5503613fc --- /dev/null +++ b/src/core/file_sys/fssystem/fssystem_bucket_tree_utils.h @@ -0,0 +1,110 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#include "core/file_sys/fssystem/fssystem_bucket_tree.h" + +namespace FileSys::impl { + +class SafeValue { +public: + static s64 GetInt64(const void* ptr) { + s64 value; + std::memcpy(std::addressof(value), ptr, sizeof(s64)); + return value; + } + + static s64 GetInt64(const s64* ptr) { + return GetInt64(static_cast<const void*>(ptr)); + } + + static s64 GetInt64(const s64& v) { + return GetInt64(std::addressof(v)); + } + + static void SetInt64(void* dst, const void* src) { + std::memcpy(dst, src, sizeof(s64)); + } + + static void SetInt64(void* dst, const s64* src) { + return SetInt64(dst, static_cast<const void*>(src)); + } + + static void SetInt64(void* dst, const s64& v) { + return SetInt64(dst, std::addressof(v)); + } +}; + +template <typename IteratorType> +struct BucketTreeNode { + using Header = BucketTree::NodeHeader; + + Header header; + + s32 GetCount() const { + return this->header.count; + } + + void* GetArray() { + return std::addressof(this->header) + 1; + } + template <typename T> + T* GetArray() { + return reinterpret_cast<T*>(this->GetArray()); + } + const void* GetArray() const { + return std::addressof(this->header) + 1; + } + template <typename T> + const T* GetArray() const { + return reinterpret_cast<const T*>(this->GetArray()); + } + + s64 GetBeginOffset() const { + return *this->GetArray<s64>(); + } + s64 GetEndOffset() const { + return this->header.offset; + } + + IteratorType GetBegin() { + return IteratorType(this->GetArray<s64>()); + } + IteratorType GetEnd() { + return IteratorType(this->GetArray<s64>()) + this->header.count; + } + IteratorType GetBegin() const { + return IteratorType(this->GetArray<s64>()); + } + IteratorType GetEnd() const { + return IteratorType(this->GetArray<s64>()) + this->header.count; + } + + IteratorType GetBegin(size_t entry_size) { + return IteratorType(this->GetArray(), entry_size); + } + IteratorType GetEnd(size_t entry_size) { + return IteratorType(this->GetArray(), entry_size) + this->header.count; + } + IteratorType GetBegin(size_t entry_size) const { + return IteratorType(this->GetArray(), entry_size); + } + IteratorType GetEnd(size_t entry_size) const { + return IteratorType(this->GetArray(), entry_size) + this->header.count; + } +}; + +constexpr inline s64 GetBucketTreeEntryOffset(s64 entry_set_offset, size_t entry_size, + s32 entry_index) { + return entry_set_offset + sizeof(BucketTree::NodeHeader) + + entry_index * static_cast<s64>(entry_size); +} + +constexpr inline s64 GetBucketTreeEntryOffset(s32 entry_set_index, size_t node_size, + size_t entry_size, s32 entry_index) { + return GetBucketTreeEntryOffset(entry_set_index * static_cast<s64>(node_size), entry_size, + entry_index); +} + +} // namespace FileSys::impl |