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Kernel: Enable building the kernel with -flto
GCC with -flto is more aggressive when it comes to inlining and discarding functions which is why we must mark some of the functions as NEVER_INLINE (because they contain asm labels which would be duplicated in the object files if the compiler decides to inline the function elsewhere) and __attribute__((used)) for others so that GCC doesn't discard them.
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9 changed files with 57 additions and 57 deletions
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@ -980,7 +980,7 @@ public:
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void exit_trap(TrapFrame& trap);
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[[noreturn]] void initialize_context_switching(Thread& initial_thread);
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void switch_context(Thread*& from_thread, Thread*& to_thread);
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NEVER_INLINE void switch_context(Thread*& from_thread, Thread*& to_thread);
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[[noreturn]] static void assume_context(Thread& thread, FlatPtr flags);
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u32 init_context(Thread& thread, bool leave_crit);
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static Vector<FlatPtr> capture_stack_trace(Thread& thread, size_t max_frames = 0);
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@ -1057,9 +1057,9 @@ struct TrapFrame {
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static_assert(TRAP_FRAME_SIZE == sizeof(TrapFrame));
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extern "C" void enter_trap_no_irq(TrapFrame*);
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extern "C" void enter_trap(TrapFrame*);
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extern "C" void exit_trap(TrapFrame*);
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extern "C" void enter_trap_no_irq(TrapFrame*) __attribute__((used));
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extern "C" void enter_trap(TrapFrame*) __attribute__((used));
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extern "C" void exit_trap(TrapFrame*) __attribute__((used));
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class MSR {
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uint32_t m_msr;
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@ -14,14 +14,14 @@ namespace Kernel {
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struct RegisterState;
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[[nodiscard]] bool safe_memcpy(void* dest_ptr, const void* src_ptr, size_t n, void*& fault_at);
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[[nodiscard]] ssize_t safe_strnlen(const char* str, size_t max_n, void*& fault_at);
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[[nodiscard]] bool safe_memset(void* dest_ptr, int c, size_t n, void*& fault_at);
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[[nodiscard]] Optional<u32> safe_atomic_fetch_add_relaxed(volatile u32* var, u32 val);
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[[nodiscard]] Optional<u32> safe_atomic_exchange_relaxed(volatile u32* var, u32 val);
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[[nodiscard]] Optional<u32> safe_atomic_load_relaxed(volatile u32* var);
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[[nodiscard]] bool safe_atomic_store_relaxed(volatile u32* var, u32 val);
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[[nodiscard]] Optional<bool> safe_atomic_compare_exchange_relaxed(volatile u32* var, u32& expected, u32 val);
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[[nodiscard]] bool safe_memcpy(void* dest_ptr, const void* src_ptr, size_t n, void*& fault_at) __attribute__((used));
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[[nodiscard]] ssize_t safe_strnlen(const char* str, size_t max_n, void*& fault_at) __attribute__((used));
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[[nodiscard]] bool safe_memset(void* dest_ptr, int c, size_t n, void*& fault_at) __attribute__((used));
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[[nodiscard]] Optional<u32> safe_atomic_fetch_add_relaxed(volatile u32* var, u32 val) __attribute__((used));
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[[nodiscard]] Optional<u32> safe_atomic_exchange_relaxed(volatile u32* var, u32 val) __attribute__((used));
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[[nodiscard]] Optional<u32> safe_atomic_load_relaxed(volatile u32* var) __attribute__((used));
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[[nodiscard]] bool safe_atomic_store_relaxed(volatile u32* var, u32 val) __attribute__((used));
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[[nodiscard]] Optional<bool> safe_atomic_compare_exchange_relaxed(volatile u32* var, u32& expected, u32 val) __attribute__((used));
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[[nodiscard]] ALWAYS_INLINE Optional<u32> safe_atomic_fetch_and_relaxed(volatile u32* var, u32 val)
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{
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