cpuemu_01.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

{
	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 ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT16)(src)) > ((UINT16)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(6);
return 10;
}
unsigned long op_470_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT16 src = get_iword(2);
{
m68k_incpc(4);
{
	unsigned int dsta = get_disp_ea_020(m68k_areg(regs, dstreg), next_iword());
{
	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 ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT16)(src)) > ((UINT16)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
}
return 11;
}
unsigned long op_478_0(UINT32 opcode) /* SUB */
{
	(void)(opcode);
{
{
	INT16 src = get_iword(2);
{
	unsigned int dsta = (INT32)(INT16)get_iword(4);
{
	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 ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT16)(src)) > ((UINT16)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(6);
return 10;
}
unsigned long op_479_0(UINT32 opcode) /* SUB */
{
	(void)(opcode);
{
{
	INT16 src = get_iword(2);
{
	unsigned int dsta = get_ilong(4);
{
	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 ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT16)(src)) > ((UINT16)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_word(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(8);
return 12;
}
unsigned long op_480_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT32 src = get_ilong(2);
{
	INT32 dst = m68k_dreg(regs, dstreg);
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	m68k_dreg(regs, dstreg) = (newv);
}
}
}
}
}
}
m68k_incpc(6);
return 6;
}
unsigned long op_490_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT32 src = get_ilong(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg);
{
	INT32 dst = cpu_readmem24_dword(dsta);
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(6);
return 14;
}
unsigned long op_498_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT32 src = get_ilong(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg);
{
	INT32 dst = cpu_readmem24_dword(dsta);
	m68k_areg(regs, dstreg) += 4;
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(6);
return 14;
}
unsigned long op_4a0_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT32 src = get_ilong(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg) - 4;
{
	INT32 dst = cpu_readmem24_dword(dsta);
	m68k_areg (regs, dstreg) = dsta;
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(6);
return 15;
}
unsigned long op_4a8_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT32 src = get_ilong(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg) + (INT32)(INT16)get_iword(6);
{
	INT32 dst = cpu_readmem24_dword(dsta);
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(8);
return 16;
}
unsigned long op_4b0_0(UINT32 opcode) /* SUB */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT32 src = get_ilong(2);
{
m68k_incpc(6);
{
	unsigned int dsta = get_disp_ea_020(m68k_areg(regs, dstreg), next_iword());
{
	INT32 dst = cpu_readmem24_dword(dsta);
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
}
return 17;
}
unsigned long op_4b8_0(UINT32 opcode) /* SUB */
{
	(void)(opcode);
{
{
	INT32 src = get_ilong(2);
{
	unsigned int dsta = (INT32)(INT16)get_iword(6);
{
	INT32 dst = cpu_readmem24_dword(dsta);
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(8);
return 16;
}
unsigned long op_4b9_0(UINT32 opcode) /* SUB */
{
	(void)(opcode);
{
{
	INT32 src = get_ilong(2);
{
	unsigned int dsta = get_ilong(6);
{
	INT32 dst = cpu_readmem24_dword(dsta);
{
{
UINT32 newv = ((INT32)(dst)) - ((INT32)(src));
{
	int flgs = ((INT32)(src)) < 0;
	int flgo = ((INT32)(dst)) < 0;
	int flgn = ((INT32)(newv)) < 0;
	SET_ZFLG (((INT32)(newv)) == 0);
	SET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));
	SET_CFLG (((UINT32)(src)) > ((UINT32)(dst)));
	COPY_CARRY;
	SET_NFLG (flgn != 0);
	cpu_writemem24_dword(dsta,newv);
}
}
}
}
}
}
}
m68k_incpc(10);
return 18;
}
unsigned long op_4d0_0(UINT32 opcode) /* CHK2 */
{
	UINT32 dstreg = opcode & 7;
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg);
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel136; }
}
}
}
}
m68k_incpc(4);
endlabel136: ;
return 4;
}
unsigned long op_4e8_0(UINT32 opcode) /* CHK2 */
{
	UINT32 dstreg = opcode & 7;
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg) + (INT32)(INT16)get_iword(4);
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel137; }
}
}
}
}
m68k_incpc(6);
endlabel137: ;
return 6;
}
unsigned long op_4f0_0(UINT32 opcode) /* CHK2 */
{
	UINT32 dstreg = opcode & 7;
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
m68k_incpc(4);
{
	unsigned int dsta = get_disp_ea_020(m68k_areg(regs, dstreg), next_iword());
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel138; }
}
}
}
}
}
endlabel138: ;
return 7;
}
unsigned long op_4f8_0(UINT32 opcode) /* CHK2 */
{
	(void)(opcode);
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
	unsigned int dsta = (INT32)(INT16)get_iword(4);
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel139; }
}
}
}
}
m68k_incpc(6);
endlabel139: ;
return 6;
}
unsigned long op_4f9_0(UINT32 opcode) /* CHK2 */
{
	(void)(opcode);
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
	unsigned int dsta = get_ilong(4);
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel140; }
}
}
}
}
m68k_incpc(8);
endlabel140: ;
return 8;
}
unsigned long op_4fa_0(UINT32 opcode) /* CHK2 */
{
	(void)(opcode);
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
	unsigned int dsta = m68k_getpc () + 4;
	dsta += (INT32)(INT16)get_iword(4);
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel141; }
}
}
}
}
m68k_incpc(6);
endlabel141: ;
return 6;
}
unsigned long op_4fb_0(UINT32 opcode) /* CHK2 */
{
	(void)(opcode);
{
	unsigned int oldpc = m68k_getpc();
{
	INT16 extra = get_iword(2);
{
m68k_incpc(4);
{
	unsigned int tmppc = m68k_getpc();
	unsigned int dsta = get_disp_ea_020(tmppc, next_iword());
	{INT32 upper,lower,reg = regs.regs[(extra >> 12) & 15];
	lower=cpu_readmem24_dword(dsta); upper = cpu_readmem24_dword(dsta+4);
	SET_ZFLG (upper == reg || lower == reg);
	SET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);
	if ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto endlabel142; }
}
}
}
}
}
endlabel142: ;
return 7;
}
unsigned long op_600_0(UINT32 opcode) /* ADD */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT8 src = get_ibyte(2);
{
	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(4);
return 4;
}
unsigned long op_610_0(UINT32 opcode) /* ADD */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT8 src = get_ibyte(2);
{
	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(4);
return 8;
}
unsigned long op_618_0(UINT32 opcode) /* ADD */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT8 src = get_ibyte(2);
{
	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(4);
return 8;
}
unsigned long op_620_0(UINT32 opcode) /* ADD */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT8 src = get_ibyte(2);
{
	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(4);
return 9;
}
unsigned long op_628_0(UINT32 opcode) /* ADD */
{
	UINT32 dstreg = opcode & 7;
{
{
	INT8 src = get_ibyte(2);
{
	unsigned int dsta = m68k_areg(regs, dstreg) + (INT32)(INT16)get_iword(4);
{
	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) &