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#include "../copyright"
#ifndef _CPUADDR_H_
#define _CPUADDR_H_
extern int32_t OpAddress;
static inline void Immediate8()
{
OpAddress = ICPU.ShiftedPB + CPU.PC - CPU.PCBase;
CPU.PC++;
}
static inline void Immediate16()
{
OpAddress = ICPU.ShiftedPB + CPU.PC - CPU.PCBase;
CPU.PC += 2;
}
static inline void Relative()
{
int8_t Int8 = *CPU.PC++;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
OpAddress = ((int32_t)(CPU.PC - CPU.PCBase) + Int8) & 0xffff;
}
static inline void RelativeLong()
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = *(uint16_t*) CPU.PC;
#else
OpAddress = *CPU.PC + (*(CPU.PC + 1) << 8);
#endif
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2 + ONE_CYCLE;
#endif
CPU.PC += 2;
OpAddress += (CPU.PC - CPU.PCBase);
OpAddress &= 0xffff;
}
static inline void AbsoluteIndexedIndirect(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = (ICPU.Registers.X.W + * (uint16_t*) CPU.PC) & 0xffff;
#else
OpAddress = (ICPU.Registers.X.W + *CPU.PC + (*(CPU.PC + 1) << 8)) & 0xffff;
#endif
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2;
#endif
OpenBus = *(CPU.PC + 1);
CPU.PC += 2;
OpAddress = S9xGetWord(ICPU.ShiftedPB + OpAddress);
if (read)
OpenBus = (uint8_t)(OpAddress >> 8);
}
static inline void AbsoluteIndirectLong(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = *(uint16_t*) CPU.PC;
#else
OpAddress = *CPU.PC + (*(CPU.PC + 1) << 8);
#endif
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2;
#endif
OpenBus = *(CPU.PC + 1);
CPU.PC += 2;
if (read)
OpAddress = S9xGetWord(OpAddress) | ((OpenBus = S9xGetByte(OpAddress + 2)) << 16);
else
OpAddress = S9xGetWord(OpAddress) | (S9xGetByte(OpAddress + 2) << 16);
}
static inline void AbsoluteIndirect(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = *(uint16_t*) CPU.PC;
#else
OpAddress = *CPU.PC + (*(CPU.PC + 1) << 8);
#endif
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2;
#endif
OpenBus = *(CPU.PC + 1);
CPU.PC += 2;
OpAddress = S9xGetWord(OpAddress);
if (read)
OpenBus = (uint8_t) (OpAddress >> 8);
OpAddress += ICPU.ShiftedPB;
}
static inline void Absolute(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = *(uint16_t*) CPU.PC + ICPU.ShiftedDB;
#else
OpAddress = *CPU.PC + (*(CPU.PC + 1) << 8) + ICPU.ShiftedDB;
#endif
if (read)
OpenBus = *(CPU.PC + 1);
CPU.PC += 2;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2;
#endif
}
static inline void AbsoluteLong(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = (*(uint32_t*) CPU.PC) & 0xffffff;
#elif defined FAST_ALIGNED_LSB_WORD_ACCESS
if (((int32_t) CPU.PC & 1) == 0)
OpAddress = (*(uint16_t*) CPU.PC) + (*(CPU.PC + 2) << 16);
else
OpAddress = *CPU.PC + ((*(uint16_t*)(CPU.PC + 1)) << 8);
#else
OpAddress = *CPU.PC + (*(CPU.PC + 1) << 8) + (*(CPU.PC + 2) << 16);
#endif
if (read)
OpenBus = *(CPU.PC + 2);
CPU.PC += 3;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2 + CPU.MemSpeed;
#endif
}
static inline void Direct(bool read)
{
if (read)
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
}
static inline void DirectIndirectIndexed(bool read)
{
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
OpAddress = S9xGetWord(OpAddress);
if (read)
OpenBus = (uint8_t)(OpAddress >> 8);
OpAddress += ICPU.ShiftedDB + ICPU.Registers.Y.W;
// XXX: always add one if STA
// XXX: else Add one cycle if crosses page boundary
}
static inline void DirectIndirectIndexedLong(bool read)
{
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
if (read)
OpAddress = S9xGetWord(OpAddress) + ((OpenBus = S9xGetByte(OpAddress + 2)) << 16) + ICPU.Registers.Y.W;
else
OpAddress = S9xGetWord(OpAddress) + (S9xGetByte(OpAddress + 2) << 16) + ICPU.Registers.Y.W;
}
static inline void DirectIndexedIndirect(bool read)
{
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W + ICPU.Registers.X.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
OpAddress = S9xGetWord(OpAddress);
if (read)
OpenBus = (uint8_t)(OpAddress >> 8);
OpAddress += ICPU.ShiftedDB;
#ifndef SA1_OPCODES
CPU.Cycles += ONE_CYCLE;
#endif
}
static inline void DirectIndexedX(bool read)
{
if (read)
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W + ICPU.Registers.X.W);
OpAddress &= CheckEmulation() ? 0xff : 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed + ONE_CYCLE;
#endif
}
static void DirectIndexedY(bool read)
{
if (read)
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W + ICPU.Registers.Y.W);
OpAddress &= CheckEmulation() ? 0xff : 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed + ONE_CYCLE;
#endif
}
static inline void AbsoluteIndexedX(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = ICPU.ShiftedDB + *(uint16_t*) CPU.PC + ICPU.Registers.X.W;
#else
OpAddress = ICPU.ShiftedDB + *CPU.PC + (*(CPU.PC + 1) << 8) + ICPU.Registers.X.W;
#endif
if (read)
OpenBus = *(CPU.PC + 1);
CPU.PC += 2;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2;
#endif
// XXX: always add one cycle for ROL, LSR, etc
// XXX: else is cross page boundary add one cycle
}
static inline void AbsoluteIndexedY(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = ICPU.ShiftedDB + *(uint16_t*) CPU.PC + ICPU.Registers.Y.W;
#else
OpAddress = ICPU.ShiftedDB + *CPU.PC + (*(CPU.PC + 1) << 8) + ICPU.Registers.Y.W;
#endif
if (read)
OpenBus = *(CPU.PC + 1);
CPU.PC += 2;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2;
#endif
// XXX: always add cycle for STA
// XXX: else is cross page boundary add one cycle
}
static inline void AbsoluteLongIndexedX(bool read)
{
#ifdef FAST_LSB_WORD_ACCESS
OpAddress = (*(uint32_t*) CPU.PC + ICPU.Registers.X.W) & 0xffffff;
#elif defined FAST_ALIGNED_LSB_WORD_ACCESS
if (((int32_t) CPU.PC & 1) == 0)
OpAddress = ((*(uint16_t*) CPU.PC) + (*(CPU.PC + 2) << 16) + ICPU.Registers.X.W) & 0xFFFFFF;
else
OpAddress = (*CPU.PC + ((*(uint16_t*)(CPU.PC + 1)) << 8) + ICPU.Registers.X.W) & 0xFFFFFF;
#else
OpAddress = (*CPU.PC + (*(CPU.PC + 1) << 8) + (*(CPU.PC + 2) << 16) + ICPU.Registers.X.W) & 0xffffff;
#endif
if (read)
OpenBus = *(CPU.PC + 2);
CPU.PC += 3;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeedx2 + CPU.MemSpeed;
#endif
}
static inline void DirectIndirect(bool read)
{
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
OpAddress = S9xGetWord(OpAddress);
if (read)
OpenBus = (uint8_t)(OpAddress >> 8);
OpAddress += ICPU.ShiftedDB;
}
static inline void DirectIndirectLong(bool read)
{
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.D.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed;
#endif
if (read)
OpAddress = S9xGetWord(OpAddress) + ((OpenBus = S9xGetByte(OpAddress + 2)) << 16);
else
OpAddress = S9xGetWord(OpAddress) + (S9xGetByte(OpAddress + 2) << 16);
}
static inline void StackRelative(bool read)
{
if (read)
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.S.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed + ONE_CYCLE;
#endif
}
static inline void StackRelativeIndirectIndexed(bool read)
{
OpenBus = *CPU.PC;
OpAddress = (*CPU.PC++ + ICPU.Registers.S.W) & 0xffff;
#ifndef SA1_OPCODES
CPU.Cycles += CPU.MemSpeed + TWO_CYCLES;
#endif
OpAddress = S9xGetWord(OpAddress);
if (read)
OpenBus = (uint8_t)(OpAddress >> 8);
OpAddress = (OpAddress + ICPU.ShiftedDB + ICPU.Registers.Y.W) & 0xffffff;
}
#endif
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