flycast/core/hw/mem/_vmem.h

#pragma once
#include "types.h"

//Typedef's
//ReadMem 
typedef u8 DYNACALL _vmem_ReadMem8FP(u32 Address);
typedef u16 DYNACALL _vmem_ReadMem16FP(u32 Address);
typedef u32 DYNACALL _vmem_ReadMem32FP(u32 Address);
//WriteMem
typedef void DYNACALL _vmem_WriteMem8FP(u32 Address,u8 data);
typedef void DYNACALL _vmem_WriteMem16FP(u32 Address,u16 data);
typedef void DYNACALL _vmem_WriteMem32FP(u32 Address,u32 data);

//our own handle type :)
typedef u32 _vmem_handler;

//Functions

//init/reset/term
void _vmem_init();
void _vmem_reset();
void _vmem_term();

//functions to register and map handlers/memory
_vmem_handler _vmem_register_handler(_vmem_ReadMem8FP* read8,_vmem_ReadMem16FP* read16,_vmem_ReadMem32FP* read32, _vmem_WriteMem8FP* write8,_vmem_WriteMem16FP* write16,_vmem_WriteMem32FP* write32);

#define  _vmem_register_handler_Template(read,write) _vmem_register_handler \
									(read<1,u8>,read<2,u16>,read<4,u32>,	\
									write<1,u8>,write<2,u16>,write<4,u32>)	

#define  _vmem_register_handler_Template1(read,write,extra_Tparam) _vmem_register_handler \
									(read<1,u8,extra_Tparam>,read<2,u16,extra_Tparam>,read<4,u32,extra_Tparam>,	\
									write<1,u8,extra_Tparam>,write<2,u16,extra_Tparam>,write<4,u32,extra_Tparam>)	

#define  _vmem_register_handler_Template2(read,write,etp1,etp2) _vmem_register_handler \
									(read<1,u8,etp1,etp2>,read<2,u16,etp1,etp2>,read<4,u32,etp1,etp2>,	\
									write<1,u8,etp1,etp2>,write<2,u16,etp1,etp2>,write<4,u32,etp1,etp2>)	

void _vmem_map_handler(_vmem_handler Handler,u32 start,u32 end);
void _vmem_map_block(void* base,u32 start,u32 end,u32 mask);
void _vmem_mirror_mapping(u32 new_region,u32 start,u32 size);

#define _vmem_map_block_mirror(base,start,end,blck_size) {u32 block_size=(blck_size)>>24;u32 map_sz=(end)-(start)+1;/*verify((map_sz%block_size)==0);u32 map_times=map_sz/(block_size);*/ for (u32 _maip=(start);_maip<(end);_maip+=block_size) _vmem_map_block((base),_maip,_maip+block_size-1,blck_size-1);}

//ReadMem(s)
u32 DYNACALL _vmem_ReadMem8SX32(u32 Address);
u32 DYNACALL _vmem_ReadMem16SX32(u32 Address);
u8 DYNACALL _vmem_ReadMem8(u32 Address);
u16 DYNACALL _vmem_ReadMem16(u32 Address);
u32 DYNACALL _vmem_ReadMem32(u32 Address);
u64 DYNACALL _vmem_ReadMem64(u32 Address);
//WriteMem(s)
void DYNACALL _vmem_WriteMem8(u32 Address,u8 data);
void DYNACALL _vmem_WriteMem16(u32 Address,u16 data);
void DYNACALL _vmem_WriteMem32(u32 Address,u32 data);
void DYNACALL _vmem_WriteMem64(u32 Address,u64 data);

//should be called at start up to ensure it will succeed :)
bool _vmem_reserve();
void _vmem_release();

//dynarec helpers
void _vmem_get_ptrs(u32 sz,bool write,void*** vmap,void*** func);
void* _vmem_get_ptr2(u32 addr,u32& mask);
void* _vmem_read_const(u32 addr,bool& ismem,u32 sz);

extern u8* virt_ram_base;

static inline bool _nvmem_enabled() {
	return virt_ram_base != 0;
}

void _vmem_bm_reset();