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kern: avoid constexpr init for many objects (avoids unnecessary memory clear) (#1668)

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This commit is contained in:
SciresM
2021-10-23 15:25:20 -07:00
committed by GitHub
parent 20716cb3de
commit 36e4914be8
77 changed files with 489 additions and 339 deletions
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3
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table.hpp
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@@ -168,7 +168,8 @@ namespace ams::kern::arch::arm64 {
return entry;
}
public:
constexpr KPageTable() : KPageTableBase(), m_manager(), m_ttbr(), m_asid() { /* ... */ }
constexpr explicit KPageTable(util::ConstantInitializeTag) : KPageTableBase(util::ConstantInitialize), m_manager(), m_ttbr(), m_asid() { /* ... */ }
explicit KPageTable() { /* ... */ }
static NOINLINE void Initialize(s32 core_id);

4
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_impl.hpp
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@@ -105,7 +105,9 @@ namespace ams::kern::arch::arm64 {
return GetL3EntryFromTable(KMemoryLayout::GetLinearVirtualAddress(entry->GetTable()), address);
}
public:
constexpr KPageTableImpl() : m_table(), m_is_kernel(), m_num_entries() { /* ... */ }
constexpr explicit KPageTableImpl(util::ConstantInitializeTag) : m_table(), m_is_kernel(), m_num_entries() { /* ... */ }
explicit KPageTableImpl() { /* ... */ }
NOINLINE void InitializeForKernel(void *tb, KVirtualAddress start, KVirtualAddress end);
NOINLINE void InitializeForProcess(void *tb, KVirtualAddress start, KVirtualAddress end);

2
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_process_page_table.hpp
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@@ -23,8 +23,6 @@ namespace ams::kern::arch::arm64 {
private:
KPageTable m_page_table;
public:
constexpr KProcessPageTable() : m_page_table() { /* ... */ }
void Activate(u64 id) {
/* Activate the page table with the specified contextidr. */
m_page_table.Activate(id);

2
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_supervisor_page_table.hpp
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@@ -25,7 +25,7 @@ namespace ams::kern::arch::arm64 {
KPageTable m_page_table;
u64 m_ttbr0_identity[cpu::NumCores];
public:
constexpr KSupervisorPageTable() : m_page_table(), m_ttbr0_identity() { /* ... */ }
constexpr KSupervisorPageTable() : m_page_table(util::ConstantInitialize), m_ttbr0_identity() { /* ... */ }
NOINLINE void Initialize(s32 core_id);

3
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_thread_context.hpp
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@@ -57,7 +57,8 @@ namespace ams::kern::arch::arm64 {
static void RestoreFpuRegisters64(const KThreadContext &);
static void RestoreFpuRegisters32(const KThreadContext &);
public:
constexpr explicit KThreadContext() : m_callee_saved(), m_lr(), m_sp(), m_cpacr(), m_fpcr(), m_fpsr(), m_fpu_registers(), m_locked() { /* ... */ }
constexpr explicit KThreadContext(util::ConstantInitializeTag) : m_callee_saved(), m_lr(), m_sp(), m_cpacr(), m_fpcr(), m_fpsr(), m_fpu_registers(), m_locked() { /* ... */ }
explicit KThreadContext() { /* ... */ }
Result Initialize(KVirtualAddress u_pc, KVirtualAddress k_sp, KVirtualAddress u_sp, uintptr_t arg, bool is_user, bool is_64_bit, bool is_main);
Result Finalize();