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// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/nekernel-org/nekernel
#ifndef ARCHKIT_ARCHKIT_H
#define ARCHKIT_ARCHKIT_H
#include <NeKit/Array.h>
#include <NeKit/Config.h>
#include <NeKit/Function.h>
#include <FirmwareKit/Handover.h>
#ifdef __NE_AMD64__
#include <HALKit/AMD64/Hypervisor.h>
#include <HALKit/AMD64/Paging.h>
#include <HALKit/AMD64/Processor.h>
#elif defined(__NE_POWER64__)
#include <HALKit/POWER/Processor.h>
#elif defined(__NE_ARM64__)
#include <HALKit/ARM64/Processor.h>
#elif defined(__NE_SDK__)
#include <HALKit/ARM64/Processor.h>
#else
#error !!! unknown architecture !!!
#endif
#define kMaxDispatchCallCount (512U)
namespace Kernel {
inline SizeT rt_hash_seed(const Char* seed, UInt32 mul) {
SizeT hash = 0;
for (SSizeT idx = 0; seed[idx] != 0; ++idx) {
hash += seed[idx];
hash ^= mul;
}
return hash;
}
/// @brief write to mapped memory register
/// @param base the base address.
/// @param reg the register.
/// @param value the write to write on it.
template <typename DataKind>
inline Void ke_dma_write(UIntPtr base, DataKind reg, DataKind value) {
*(volatile DataKind*) (base + reg) = value;
}
/// @brief read from mapped memory register.
/// @param base base address
/// @param reg the register.
/// @return the value inside the register.
template <typename DataKind>
inline UInt32 ke_dma_read(UIntPtr base, DataKind reg) {
return *(volatile DataKind*) (base + reg);
}
/// @brief Hardware Abstraction Layer
namespace HAL {
/// @brief Check whether this pointer is a bitmap object.
/// @param ptr argument to verify.
/// @param whether successful or not.
auto mm_is_bitmap(VoidPtr ptr) -> Bool;
} // namespace HAL
} // namespace Kernel
using rt_syscall_proc = Kernel::Void (*)(Kernel::VoidPtr);
/// @brief System Call Dispatch.
struct HAL_DISPATCH_ENTRY final {
Kernel::UInt64 fHash;
Kernel::Bool fHooked;
rt_syscall_proc fProc;
BOOL IsKernCall() { return NO; }
BOOL IsSysCall() { return YES; }
operator bool() { return fHooked; }
};
using rt_kerncall_proc = Kernel::Void (*)(Kernel::SizeT, Kernel::VoidPtr, Kernel::SizeT);
/// @brief Kernel Call Dispatch.
struct HAL_KERNEL_DISPATCH_ENTRY final {
Kernel::UInt64 fHash;
Kernel::Bool fHooked;
rt_kerncall_proc fProc;
BOOL IsKernCall() { return YES; }
BOOL IsSysCall() { return NO; }
operator bool() { return fHooked; }
};
inline Kernel::Array<HAL_DISPATCH_ENTRY, kMaxDispatchCallCount> kSysCalls;
inline Kernel::Array<HAL_KERNEL_DISPATCH_ENTRY, kMaxDispatchCallCount> kKernCalls;
#ifdef __NE_VIRTUAL_MEMORY_SUPPORT__
inline Kernel::VoidPtr kKernelVM = nullptr;
#endif // __NE_VIRTUAL_MEMORY_SUPPORT__
inline Kernel::SizeT kBitMapCursor = 0UL;
#endif
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