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#ifndef ARMJIT_INTERNAL_H
#define ARMJIT_INTERNAL_H
#include "types.h"
#include <stdint.h>
#include "ARMJIT.h"
// here lands everything which doesn't fit into ARMJIT.h
// where it would be included by pretty much everything
namespace ARMJIT
{
enum
{
branch_IdleBranch = 1 << 0,
branch_FollowCondTaken = 1 << 1,
branch_FollowCondNotTaken = 1 << 2,
branch_StaticTarget = 1 << 3,
};
struct FetchedInstr
{
u32 A_Reg(int pos) const
{
return (Instr >> pos) & 0xF;
}
u32 T_Reg(int pos) const
{
return (Instr >> pos) & 0x7;
}
u32 Cond() const
{
return Instr >> 28;
}
u8 BranchFlags;
u8 SetFlags;
u32 Instr;
u32 Addr;
u8 DataCycles;
u16 CodeCycles;
u32 DataRegion;
ARMInstrInfo::Info Info;
};
/*
TinyVector
- because reinventing the wheel is the best!
- meant to be used very often, with not so many elements
max 1 << 16 elements
- doesn't allocate while no elements are inserted
- not stl confirmant of course
- probably only works with POD types
- remove operations don't preserve order, but O(1)!
*/
template <typename T>
struct __attribute__((packed)) TinyVector
{
T* Data = NULL;
u16 Capacity = 0;
u16 Length = 0;
~TinyVector()
{
delete[] Data;
}
void MakeCapacity(u32 capacity)
{
assert(capacity <= UINT16_MAX);
assert(capacity > Capacity);
T* newMem = new T[capacity];
if (Data != NULL)
memcpy(newMem, Data, sizeof(T) * Length);
T* oldData = Data;
Data = newMem;
if (oldData != NULL)
delete[] oldData;
Capacity = capacity;
}
void SetLength(u16 length)
{
if (Capacity < length)
MakeCapacity(length);
Length = length;
}
void Clear()
{
Length = 0;
}
void Add(T element)
{
assert(Length + 1 <= UINT16_MAX);
if (Length + 1 > Capacity)
MakeCapacity(((Capacity + 4) * 3) / 2);
Data[Length++] = element;
}
void Remove(int index)
{
assert(index >= 0 && index < Length);
Length--;
Data[index] = Data[Length];
/*for (int i = index; i < Length; i++)
Data[i] = Data[i + 1];*/
}
int Find(T needle)
{
for (int i = 0; i < Length; i++)
{
if (Data[i] == needle)
return i;
}
return -1;
}
bool RemoveByValue(T needle)
{
for (int i = 0; i < Length; i++)
{
if (Data[i] == needle)
{
Remove(i);
return true;
}
}
return false;
}
T& operator[](int index)
{
assert(index >= 0 && index < Length);
return Data[index];
}
};
class JitBlock
{
public:
JitBlock(u32 numInstrs, u32 numAddresses)
{
NumInstrs = numInstrs;
NumAddresses = numAddresses;
Data.SetLength(numInstrs + numAddresses);
}
u32 StartAddr;
u32 PseudoPhysicalAddr;
u32 NumInstrs;
u32 NumAddresses;
JitBlockEntry EntryPoint;
u32* Instrs()
{ return &Data[0]; }
u32* AddressRanges()
{ return &Data[NumInstrs]; }
u32* Links()
{ return &Data[NumInstrs + NumAddresses]; }
u32 NumLinks()
{ return Data.Length - NumInstrs - NumAddresses; }
void AddLink(u32 link)
{
Data.Add(link);
}
void ResetLinks()
{
Data.SetLength(NumInstrs + NumAddresses);
}
private:
/*
0..<NumInstrs - the instructions of the block
NumInstrs..<(NumLinks + NumInstrs) - pseudo physical addresses where the block is located
(atleast one, the pseudo physical address of the block)
*/
TinyVector<u32> Data;
};
// size should be 16 bytes because I'm to lazy to use mul and whatnot
struct __attribute__((packed)) AddressRange
{
TinyVector<JitBlock*> Blocks;
u16 InvalidLiterals;
u16 TimesInvalidated;
};
extern AddressRange CodeRanges[ExeMemSpaceSize / 512];
typedef void (*InterpreterFunc)(ARM* cpu);
extern InterpreterFunc InterpretARM[];
extern InterpreterFunc InterpretTHUMB[];
extern u8 MemRegion9[0x80000];
extern u8 MemRegion7[0x80000];
void* GetFuncForAddr(ARM* cpu, u32 addr, bool store, int size);
template <u32 Num>
void LinkBlock(ARM* cpu, u32 codeOffset);
}
#endif
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