flycast/core/hw/arm7/arm_mem.h

#pragma once
#include "types.h"
#include "hw/aica/aica_if.h"

template <typename T> T arm_ReadReg(u32 addr);
template <typename T> void arm_WriteReg(u32 addr, T data);

template<typename T>
static inline T DYNACALL ReadMemArm(u32 addr)
{
	addr &= 0x00FFFFFF;
	if (addr < 0x800000)
	{
		T rv = *(T *)&aica_ram[addr & (ARAM_MASK - (sizeof(T) - 1))];
		
		if (unlikely(sizeof(T) == 4 && (addr & 3) != 0))
		{
			u32 sf = (addr & 3) * 8;
			return (rv >> sf) | (rv << (32 - sf));
		}
		else
			return rv;
	}
	else
	{
		return arm_ReadReg<T>(addr);
	}
}

template<typename T>
static inline void DYNACALL WriteMemArm(u32 addr, T data)
{
	addr &= 0x00FFFFFF;
	if (addr < 0x800000)
	{
		*(T *)&aica_ram[addr & (ARAM_MASK - (sizeof(T) - 1))] = data;
	}
	else
	{
		arm_WriteReg(addr, data);
	}
}

#define arm_ReadMem8 ReadMemArm<u8>
#define arm_ReadMem16 ReadMemArm<u16>
#define arm_ReadMem32 ReadMemArm<u32>

#define arm_WriteMem8 WriteMemArm<u8>
#define arm_WriteMem16 WriteMemArm<u16>
#define arm_WriteMem32 WriteMemArm<u32>

extern bool aica_interr;
extern u32 aica_reg_L;
extern bool e68k_out;
extern u32 e68k_reg_L;
extern u32 e68k_reg_M;

void update_armintc();
void libARM_InterruptChange(u32 bits, u32 L);