cpuemu_02.c

十七种模拟器源代码 非常有用的作课程设计不可缺少的

}
}
}
return 8;
}
unsigned long op_4e75_0(UINT32 opcode) /* RTS */
{
	(void)(opcode);
{
	m68k_do_rts();
}
return 2;
}
unsigned long op_4e76_0(UINT32 opcode) /* TRAPV */
{
	(void)(opcode);
{
m68k_incpc(2);
	if (GET_VFLG) { Exception(7,m68k_getpc()); goto endlabel909; }
}
endlabel909: ;
return 2;
}
unsigned long op_4e77_0(UINT32 opcode) /* RTR */
{
	(void)(opcode);
{
	MakeSR();
{
	unsigned int sra = m68k_areg(regs, 7);
{
	INT16 sr = cpu_readmem24_word(sra);
	m68k_areg(regs, 7) += 2;
{
	unsigned int pca = m68k_areg(regs, 7);
{
	INT32 pc = cpu_readmem24_dword(pca);
	m68k_areg(regs, 7) += 4;
	regs.sr &= 0xFF00; sr &= 0xFF;
	regs.sr |= sr; m68k_setpc(pc);
	MakeFromSR();
}
}
}
}
}
return 8;
}
unsigned long op_4e7a_0(UINT32 opcode) /* MOVEC2 */
{
	(void)(opcode);
{
if (!regs.s) { Exception(8,0); goto endlabel911; }
{
{
	INT16 src = get_iword(2);
{
	int regno = (src >> 12) & 15;
	UINT32 *regp = regs.regs + regno;
	if (! m68k_movec2(src & 0xFFF, regp)) goto endlabel911;
}
}
}
}
m68k_incpc(4);
endlabel911: ;
return 4;
}
unsigned long op_4e7b_0(UINT32 opcode) /* MOVE2C */
{
	(void)(opcode);
{
if (!regs.s) { Exception(8,0); goto endlabel912; }
{
{
	INT16 src = get_iword(2);
{
	int regno = (src >> 12) & 15;
	UINT32 *regp = regs.regs + regno;
	if (! m68k_move2c(src & 0xFFF, regp)) goto endlabel912;
}
}
}
}
m68k_incpc(4);
endlabel912: ;
return 4;
}
unsigned long op_4e90_0(UINT32 opcode) /* JSR */
{
	UINT32 srcreg = (opcode & 7);
{
{
	unsigned int srca = m68k_areg(regs, srcreg);
	m68k_do_jsr(m68k_getpc() + 2, srca);
}
}
return 2;
}
unsigned long op_4ea8_0(UINT32 opcode) /* JSR */
{
	UINT32 srcreg = (opcode & 7);
{
{
	unsigned int srca = m68k_areg(regs, srcreg) + (INT32)(INT16)get_iword(2);
	m68k_do_jsr(m68k_getpc() + 4, srca);
}
}
return 4;
}
unsigned long op_4eb0_0(UINT32 opcode) /* JSR */
{
	UINT32 srcreg = (opcode & 7);
{
{
m68k_incpc(2);
{
	unsigned int srca = get_disp_ea_020(m68k_areg(regs, srcreg), next_iword());
	m68k_do_jsr(m68k_getpc() + 0, srca);
}
}
}
return 5;
}
unsigned long op_4eb8_0(UINT32 opcode) /* JSR */
{
	(void)(opcode);
{
{
	unsigned int srca = (INT32)(INT16)get_iword(2);
	m68k_do_jsr(m68k_getpc() + 4, srca);
}
}
return 4;
}
unsigned long op_4eb9_0(UINT32 opcode) /* JSR */
{
	(void)(opcode);
{
{
	unsigned int srca = get_ilong(2);
	m68k_do_jsr(m68k_getpc() + 6, srca);
}
}
return 6;
}
unsigned long op_4eba_0(UINT32 opcode) /* JSR */
{
	(void)(opcode);
{
{
	unsigned int srca = m68k_getpc () + 2;
	srca += (INT32)(INT16)get_iword(2);
	m68k_do_jsr(m68k_getpc() + 4, srca);
}
}
return 4;
}
unsigned long op_4ebb_0(UINT32 opcode) /* JSR */
{
	(void)(opcode);
{
{
m68k_incpc(2);
{
	unsigned int tmppc = m68k_getpc();
	unsigned int srca = get_disp_ea_020(tmppc, next_iword());
	m68k_do_jsr(m68k_getpc() + 0, srca);
}
}
}
return 5;
}
unsigned long op_4ed0_0(UINT32 opcode) /* JMP */
{
	UINT32 srcreg = (opcode & 7);
{
{
	unsigned int srca = m68k_areg(regs, srcreg);
	m68k_setpc(srca);
}
}
return 2;
}
unsigned long op_4ee8_0(UINT32 opcode) /* JMP */
{
	UINT32 srcreg = (opcode & 7);
{
{
	unsigned int srca = m68k_areg(regs, srcreg) + (INT32)(INT16)get_iword(2);
	m68k_setpc(srca);
}
}
return 4;
}
unsigned long op_4ef0_0(UINT32 opcode) /* JMP */
{
	UINT32 srcreg = (opcode & 7);
{
{
m68k_incpc(2);
{
	unsigned int srca = get_disp_ea_020(m68k_areg(regs, srcreg), next_iword());
	m68k_setpc(srca);
}
}
}
return 5;
}
unsigned long op_4ef8_0(UINT32 opcode) /* JMP */
{
	(void)(opcode);
{
{
	unsigned int srca = (INT32)(INT16)get_iword(2);
	m68k_setpc(srca);
}
}
return 4;
}
unsigned long op_4ef9_0(UINT32 opcode) /* JMP */
{
	(void)(opcode);
{
{
	unsigned int srca = get_ilong(2);
	m68k_setpc(srca);
}
}
return 6;
}
unsigned long op_4efa_0(UINT32 opcode) /* JMP */
{
	(void)(opcode);
{
{
	unsigned int srca = m68k_getpc () + 2;
	srca += (INT32)(INT16)get_iword(2);
	m68k_setpc(srca);
}
}
return 4;
}
unsigned long op_4efb_0(UINT32 opcode) /* JMP */
{
	(void)(opcode);
{
{
m68k_incpc(2);
{
	unsigned int tmppc = m68k_getpc();
	unsigned int srca = get_disp_ea_020(tmppc, next_iword());
	m68k_setpc(srca);
}
}
}
return 5;
}

unsigned long op_5000_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	INT8 dst = m68k_dreg(regs, dstreg);
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	m68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ~0xff) | ((newv) & 0xff);
}
}
}
}
}
}
m68k_incpc(2);
return 2;
}
unsigned long op_5010_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg);
{
	INT8 dst = cpu_readmem24(dsta);
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(2);
return 6;
}
unsigned long op_5018_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg);
{
	INT8 dst = cpu_readmem24(dsta);
	m68k_areg(regs, dstreg) += areg_byteinc[dstreg];
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(2);
return 6;
}
unsigned long op_5020_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg) - areg_byteinc[dstreg];
{
	INT8 dst = cpu_readmem24(dsta);
	m68k_areg (regs, dstreg) = dsta;
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(2);
return 7;
}
unsigned long op_5028_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg) + (INT32)(INT16)get_iword(2);
{
	INT8 dst = cpu_readmem24(dsta);
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(4);
return 8;
}
unsigned long op_5030_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
m68k_incpc(2);
{
	unsigned int dsta = get_disp_ea_020(m68k_areg(regs, dstreg), next_iword());
{
	INT8 dst = cpu_readmem24(dsta);
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
}
return 9;
}
unsigned long op_5038_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = (INT32)(INT16)get_iword(2);
{
	INT8 dst = cpu_readmem24(dsta);
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(4);
return 8;
}
unsigned long op_5039_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = get_ilong(2);
{
	INT8 dst = cpu_readmem24(dsta);
{
{
UINT32 newv = ((INT8)(dst)) + ((INT8)(src));
{
	int flgs = ((INT8)(src)) < 0;
	int flgo = ((INT8)(dst)) < 0;
	int flgn = ((INT8)(newv)) < 0;
	SET_ZFLG (((INT8)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT8)(~dst)) < ((UINT8)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(6);
return 10;
}
unsigned long op_5040_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	INT16 dst = m68k_dreg(regs, dstreg);
{
{
UINT32 newv = ((INT16)(dst)) + ((INT16)(src));
{
	int flgs = ((INT16)(src)) < 0;
	int flgo = ((INT16)(dst)) < 0;
	int flgn = ((INT16)(newv)) < 0;
	SET_ZFLG (((INT16)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT16)(~dst)) < ((UINT16)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	m68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ~0xffff) | ((newv) & 0xffff);
}
}
}
}
}
}
m68k_incpc(2);
return 2;
}
unsigned long op_5048_0(UINT32 opcode) /* ADDA */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	INT32 dst = m68k_areg(regs, dstreg);
{
	UINT32 newv = dst + src;
	m68k_areg(regs, dstreg) = (newv);
}
}
}
}
m68k_incpc(2);
return 2;
}
unsigned long op_5050_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg);
{
	INT16 dst = cpu_readmem24_word(dsta);
{
{
UINT32 newv = ((INT16)(dst)) + ((INT16)(src));
{
	int flgs = ((INT16)(src)) < 0;
	int flgo = ((INT16)(dst)) < 0;
	int flgn = ((INT16)(newv)) < 0;
	SET_ZFLG (((INT16)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT16)(~dst)) < ((UINT16)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(2);
return 6;
}
unsigned long op_5058_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg);
{
	INT16 dst = cpu_readmem24_word(dsta);
	m68k_areg(regs, dstreg) += 2;
{
{
UINT32 newv = ((INT16)(dst)) + ((INT16)(src));
{
	int flgs = ((INT16)(src)) < 0;
	int flgo = ((INT16)(dst)) < 0;
	int flgn = ((INT16)(newv)) < 0;
	SET_ZFLG (((INT16)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT16)(~dst)) < ((UINT16)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(2);
return 6;
}
unsigned long op_5060_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg) - 2;
{
	INT16 dst = cpu_readmem24_word(dsta);
	m68k_areg (regs, dstreg) = dsta;
{
{
UINT32 newv = ((INT16)(dst)) + ((INT16)(src));
{
	int flgs = ((INT16)(src)) < 0;
	int flgo = ((INT16)(dst)) < 0;
	int flgn = ((INT16)(newv)) < 0;
	SET_ZFLG (((INT16)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT16)(~dst)) < ((UINT16)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(2);
return 7;
}
unsigned long op_5068_0(UINT32 opcode) /* ADD */
{
	UINT32 srcreg = imm8_table[((opcode >> 9) & 7)];
	UINT32 dstreg = opcode & 7;
{
{
	UINT32 src = srcreg;
{
	unsigned int dsta = m68k_areg(regs, dstreg) + (INT32)(INT16)get_iword(2);
{
	INT16 dst = cpu_readmem24_word(dsta);
{
{
UINT32 newv = ((INT16)(dst)) + ((INT16)(src));
{
	int flgs = ((INT16)(src)) < 0;
	int flgo = ((INT16)(dst)) < 0;
	int flgn = ((INT16)(newv)) < 0;
	SET_ZFLG (((INT16)(newv)) == 0);
	SET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));
	SET_CFLG (((UINT16)(~dst)) < ((UINT16)(src)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}