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/*
* Copyright (c) 2018-2021, James Mintram <me@jamesrm.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/Concepts.h>
#include <AK/Function.h>
#include <AK/Types.h>
#include <Kernel/Arch/ProcessorSpecificDataID.h>
class VirtualAddress;
namespace Kernel {
namespace Memory {
class PageDirectory;
};
class Thread;
// FIXME This needs to go behind some sort of platform abstraction
// it is used between Thread and Processor.
struct [[gnu::aligned(16)]] FPUState
{
u8 buffer[512];
};
class Processor {
public:
void set_specific(ProcessorSpecificDataID /*specific_id*/, void* /*ptr*/)
{
VERIFY_NOT_REACHED();
}
template<typename T>
T* get_specific()
{
VERIFY_NOT_REACHED();
return 0;
}
ALWAYS_INLINE static void pause()
{
VERIFY_NOT_REACHED();
}
ALWAYS_INLINE static void wait_check()
{
VERIFY_NOT_REACHED();
}
ALWAYS_INLINE u8 physical_address_bit_width() const
{
VERIFY_NOT_REACHED();
return 0;
}
ALWAYS_INLINE u8 virtual_address_bit_width() const
{
VERIFY_NOT_REACHED();
return 0;
}
ALWAYS_INLINE static bool is_initialized()
{
return false;
}
ALWAYS_INLINE static void flush_tlb_local(VirtualAddress&, size_t&)
{
VERIFY_NOT_REACHED();
}
ALWAYS_INLINE static void flush_tlb(Memory::PageDirectory const*, VirtualAddress const&, size_t)
{
VERIFY_NOT_REACHED();
}
ALWAYS_INLINE static u32 current_id()
{
VERIFY_NOT_REACHED();
return 0;
}
// FIXME: Actually return the current thread once aarch64 supports threading.
ALWAYS_INLINE static Thread* current_thread()
{
return nullptr;
}
ALWAYS_INLINE bool has_nx() const
{
return true;
}
ALWAYS_INLINE bool has_pat() const
{
return false;
}
ALWAYS_INLINE static FlatPtr current_in_irq()
{
VERIFY_NOT_REACHED();
return 0;
}
ALWAYS_INLINE static u64 read_cpu_counter()
{
VERIFY_NOT_REACHED();
return 0;
}
ALWAYS_INLINE static void enter_critical() { VERIFY_NOT_REACHED(); }
ALWAYS_INLINE static void leave_critical() { VERIFY_NOT_REACHED(); }
ALWAYS_INLINE static u32 in_critical()
{
VERIFY_NOT_REACHED();
return 0;
}
// FIXME: Actually return the idle thread once aarch64 supports threading.
ALWAYS_INLINE static Thread* idle_thread()
{
return nullptr;
}
ALWAYS_INLINE static Processor& current() { VERIFY_NOT_REACHED(); }
static void deferred_call_queue(Function<void()> /* callback */)
{
VERIFY_NOT_REACHED();
}
[[noreturn]] static void halt()
{
for (;;) { }
}
};
}
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