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author | bunnei <bunneidev@gmail.com> | 2022-10-29 22:49:09 +0200 |
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committer | bunnei <bunneidev@gmail.com> | 2022-11-04 05:17:06 +0100 |
commit | 62574616849e9c045fbec1f07f81461268f9ccb5 (patch) | |
tree | 8448e69d9bf05a6bcb3734f358cc650fe07a0c9b /src/core/hle | |
parent | core: hle: kernel: k_system_control: Add SecureAppletMemorySize. (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/k_page_group.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/core/hle/kernel/k_page_group.h b/src/core/hle/kernel/k_page_group.h index 968753992..316f172f2 100644 --- a/src/core/hle/kernel/k_page_group.h +++ b/src/core/hle/kernel/k_page_group.h @@ -5,6 +5,7 @@ #include <list> +#include "common/alignment.h" #include "common/assert.h" #include "common/common_types.h" #include "core/hle/kernel/memory_types.h" @@ -12,6 +13,89 @@ namespace Kernel { +class KPageGroup; + +class KBlockInfo { +private: + friend class KPageGroup; + +public: + constexpr KBlockInfo() = default; + + constexpr void Initialize(PAddr addr, size_t np) { + ASSERT(Common::IsAligned(addr, PageSize)); + ASSERT(static_cast<u32>(np) == np); + + m_page_index = static_cast<u32>(addr) / PageSize; + m_num_pages = static_cast<u32>(np); + } + + constexpr PAddr GetAddress() const { + return m_page_index * PageSize; + } + constexpr size_t GetNumPages() const { + return m_num_pages; + } + constexpr size_t GetSize() const { + return this->GetNumPages() * PageSize; + } + constexpr PAddr GetEndAddress() const { + return (m_page_index + m_num_pages) * PageSize; + } + constexpr PAddr GetLastAddress() const { + return this->GetEndAddress() - 1; + } + + constexpr KBlockInfo* GetNext() const { + return m_next; + } + + constexpr bool IsEquivalentTo(const KBlockInfo& rhs) const { + return m_page_index == rhs.m_page_index && m_num_pages == rhs.m_num_pages; + } + + constexpr bool operator==(const KBlockInfo& rhs) const { + return this->IsEquivalentTo(rhs); + } + + constexpr bool operator!=(const KBlockInfo& rhs) const { + return !(*this == rhs); + } + + constexpr bool IsStrictlyBefore(PAddr addr) const { + const PAddr end = this->GetEndAddress(); + + if (m_page_index != 0 && end == 0) { + return false; + } + + return end < addr; + } + + constexpr bool operator<(PAddr addr) const { + return this->IsStrictlyBefore(addr); + } + + constexpr bool TryConcatenate(PAddr addr, size_t np) { + if (addr != 0 && addr == this->GetEndAddress()) { + m_num_pages += static_cast<u32>(np); + return true; + } + return false; + } + +private: + constexpr void SetNext(KBlockInfo* next) { + m_next = next; + } + +private: + KBlockInfo* m_next{}; + u32 m_page_index{}; + u32 m_num_pages{}; +}; +static_assert(sizeof(KBlockInfo) <= 0x10); + class KPageGroup final { public: class Node final { @@ -92,6 +176,8 @@ public: return nodes.empty(); } + void Finalize() {} + private: std::list<Node> nodes; }; |