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/* -------------------------------------------
Copyright (C) 2024-2025 Amlal EL Mahrouss, Licensed under Apache 2.0
------------------------------------------- */
#pragma once
#include <CompilerKit/Defines.h>
#include <stdint.h>
/// @brief ARM64 encoding support.
/// @file impl/Aarch64.h
struct CpuOpcodeArm64;
/// @brief ARM64 opcode header.
struct PACKED CpuOpcodeArm64_Data final {
uint32_t fOpcode : 10; // Bits 31–22: Opcode for operation
uint32_t fRm : 5; // Bits 21–16: Source register Rm
uint32_t fShamt : 6; // Bits 15–10: Shift amount
uint32_t fRn : 5; // Bits 9–5: Source register Rn
uint32_t fRd : 5; // Bits 4–0: Destination register Rd
};
typedef struct {
uint32_t opcode : 6; // Bits 31–26: Branch opcode
int32_t offset : 26; // Bits 25–0: Signed offset (branch target)
} PACKED CpuOpcodeArm64_Branch;
typedef struct {
uint32_t size : 2; // Bits 31–30: Size of the data
uint32_t opcode : 7; // Bits 29–23: Opcode for load/store
uint32_t offset : 12; // Bits 22–10: Offset
uint32_t rn : 5; // Bits 9–5: Base address register Rn
uint32_t rt : 5; // Bits 4–0: Target/source register Rt
} PACKED CpuOpcodeArm64_LoadStore;
#define kAsmRegisterLimit (30)
#define kAsmRegisterPrefix "x"
#define kOpcodeARM64Count (1000)
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