path: root/sim/v850/simops.c

#include <signal.h>
#include "v850_sim.h"
#include "simops.h"

void
OP_220 ()
{
}

void
OP_10760 ()
{
}

void
OP_C7C0 ()
{
}

void
OP_760 ()
{
}

/* bv disp9 */
void
OP_580 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_OV) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bl disp9 */
void
OP_581 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_CY) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* be disp9 */
void
OP_582 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_Z) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bnh disp 9*/
void
OP_583 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bn disp9 */
void
OP_584 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_S) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* br disp9 */
void
OP_585 ()
{
  unsigned int op0;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  State.pc += op0;
}

/* blt disp9 */
void
OP_586 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* ble disp9 */
void
OP_587 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((((psw & PSW_Z) != 0)
       || (((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0))) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bnv disp9 */
void
OP_588 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_OV) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bnl disp9 */
void
OP_589 ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_CY) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bne disp9 */
void
OP_58A ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_Z) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bh disp9 */
void
OP_58B ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bp disp9 */
void
OP_58C ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_S) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bsa disp9 */
void
OP_58D ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((psw & PSW_SAT) != 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bge disp9 */
void
OP_58E ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* bgt disp9 */
void
OP_58F ()
{
  unsigned int op0, psw;
  int temp;

  temp = (State.regs[OP[0]] << 23) >> 23;
  op0 = temp;
  psw = State.psw;
  
  if ((((psw & PSW_Z) != 0)
       || (((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0))) == 0)
    State.pc += op0;
  else
    State.pc += 2;
}

/* jmp [reg1] */
void
OP_60 ()
{
  /* interp.c will bump this by +2, so correct for it here.  */
  State.pc = State.regs[OP[0]] - 2;
}

/* jarl disp22, reg */
void
OP_780 ()
{
  unsigned int op0, opc;
  int temp;

  temp = OP[0];
  temp = (temp << 10) >> 10;
  op0 = temp;
  opc = State.pc;

  State.pc += temp;

  /* Gross.  jarl X,r0 is really jr and doesn't save its result.  */
  if (OP[1] != 0)
    State.regs[OP[1]] = opc + 4;
}

/* add reg, reg */
void
OP_1C0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op0 + op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < op0 || result < op1);
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
	&& (op0 & 0x80000000) != (result & 0x80000000));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* add sign_extend(imm5), reg */
void
OP_240 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;
  int temp;

  /* Compute the result.  */
  temp = (OP[0] & 0x1f);
  temp = (temp << 27) >> 27;
  op0 = temp;
  op1 = State.regs[OP[1]];
  result = op0 + op1;
  
  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < op0 || result < op1);
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
	&& (op0 & 0x80000000) != (result & 0x80000000));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* addi sign_extend(imm16), reg, reg */
void
OP_600 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;
  int temp;

  /* Compute the result.  */
  temp = (OP[0] & 0xffff);
  temp = (temp << 16) >> 16;
  op0 = temp;
  op1 = State.regs[OP[1]];
  result = op0 + op1;
  
  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < op0 || result < op1);
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
	&& (op0 & 0x80000000) != (result & 0x80000000));

  /* Store the result and condition codes.  */
  State.regs[OP[2]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* sub reg1, reg2 */
void
OP_1A0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op1 - op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < -op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* subr reg1, reg2 */
void
OP_180 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op0 - op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < -op1);
  ov = ((op0 & 0x80000000) != (op1 & 0x80000000)
	&& (op0 & 0x80000000) != (result & 0x80000000));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* mulh reg1, reg2 */
void
OP_E0 ()
{
  State.regs[OP[1]] = ((State.regs[OP[1]] & 0xffff)
		       * (State.regs[OP[0]] & 0xffff));
}

/* mulh sign_extend(imm5), reg2

   Condition codes */
void
OP_2E0 ()
{
  int value = OP[0];
 
  value = (value << 27) >> 27;

  State.regs[OP[1]] = (State.regs[OP[1]] & 0xffff) * value;
}

/* mulhi imm16, reg1, reg2 */
void
OP_6E0 ()
{
  int value = OP[0];
 
  value = value & 0xffff;

  State.regs[OP[2]] = (State.regs[OP[1]] & 0xffff) * value;
}

/* divh reg1, reg2 */
void
OP_40 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;
  int temp;

  /* Compute the result.  */
  temp = State.regs[OP[0]] & 0xffff;
  temp = (temp << 16) >> 16;
  op0 = temp;
  op1 = State.regs[OP[1]];

  if (op0 == 0xffffffff && op1 == 0x80000000)
    {
      result = 0x80000000;
      ov = 1;
    }
  else if (op0 != 0)
    {
      result = op1 / op0;
      ov = 0;
    }
  else
    ov = 1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (ov ? PSW_OV : 0));
}

/* cmp reg, reg */
void
OP_1E0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op1 - op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < -op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));

  /* Set condition codes.  */
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* cmp sign_extend(imm5), reg */
void
OP_260 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;
  int temp;

  /* Compute the result.  */
  temp = OP[0];
  temp = (temp << 27) >> 27;
  op0 = temp;
  op1 = State.regs[OP[1]];
  result = op1 - op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (result < -op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));

  /* Set condition codes.  */
  State.psw &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* setf cccc,reg2 */
void
OP_7E0 ()
{
  /* Hack alert.  We turn off a bit in op0 since we really only
     wanted 4 bits.  */
  unsigned int op0, psw, result;

  op0 = OP[0] & 0xf;
  psw = State.psw;

  switch (op0)
    {
      case 0x0:
	result = ((psw & PSW_OV) != 0);
	break;
      case 0x1:
	result = ((psw & PSW_CY) != 0);
	break;
      case 0x2:
	result = ((psw & PSW_Z) != 0);
	break;
      case 0x3:
	result = ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) != 0);
	break;
      case 0x4:
	result = ((psw & PSW_S) != 0);
	break;
      case 0x5:
	result = 1;
	break;
      case 0x6:
	result = ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) != 0);
	break;
      case 0x7:
	result = (((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0))
		  || ((psw & PSW_Z) != 0)) != 0);
	break;
      case 0x8:
	result = ((psw & PSW_OV) == 0);
	break;
      case 0x9:
	result = ((psw & PSW_CY) == 0);
	break;
      case 0xa:
	result = ((psw & PSW_Z) == 0);
	break;
      case 0xb:
	result = ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) == 0);
	break;
      case 0xc:
	result = ((psw & PSW_S) == 0);
	break;
      case 0xd:
	result = ((psw & PSW_SAT) != 0);
	break;
      case 0xe:
	result = ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) == 0);
	break;
      case 0xf:
	result = (((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0))
		  || ((psw & PSW_Z) != 0)) == 0);
	break;
    }
  
  State.regs[OP[1]] = result;
}

/* tst reg,reg */
void
OP_160 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op0 & op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the condition codes.  */
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

void
OP_10720 ()
{
}

void
OP_720 ()
{
}

void
OP_87C0 ()
{
}

void
OP_300 ()
{
}

/* mov reg, reg */
void
OP_0 ()
{
  State.regs[OP[1]] = State.regs[OP[0]];
}

/* mov sign_extend(imm5), reg */
void
OP_200 ()
{
  int value = OP[0];
 
  value = (value << 27) >> 27;
  State.regs[OP[1]] = value;
}

/* movea sign_extend(imm16), reg, reg  */

void
OP_620 ()
{
  int value = OP[0];
 
  value = (value << 16) >> 16;

  State.regs[OP[2]] = State.regs[OP[1]] + value;
}

/* movhi imm16, reg, reg */
void
OP_640 ()
{
  int value = OP[0];
 
  value = (value & 0xffff) << 16; 

  State.regs[OP[2]] = State.regs[OP[1]] + value;
}

void
OP_7C0 ()
{
}

void
OP_1687E0 ()
{
}

void
OP_A0 ()
{
}

void
OP_740 ()
{
}

void
OP_80 ()
{
}

/* sar zero_extend(imm5),reg1 */
void
OP_2A0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = OP[0] & 0x1f;
  op1 = State.regs[OP[1]];
  result = (signed)op1 >> op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 & (1 << (op0 - 1)));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
}

/* sar reg1, reg2 */
void
OP_A007E0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = State.regs[OP[0]] & 0x1f;
  op1 = State.regs[OP[1]];
  result = (signed)op1 >> op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 & (1 << (op0 - 1)));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));
}

/* shl zero_extend(imm5),reg1 */
void
OP_2C0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = OP[0] & 0x1f;
  op1 = State.regs[OP[1]];
  result = op1 << op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 & (1 << (32 - op0)));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));
}

/* shl reg1, reg2 */
void
OP_C007E0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = State.regs[OP[0]] & 0x1f;
  op1 = State.regs[OP[1]];
  result = op1 << op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 & (1 << (32 - op0)));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));
}

/* shr zero_extend(imm5),reg1 */
void
OP_280 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = OP[0] & 0x1f;
  op1 = State.regs[OP[1]];
  result = op1 >> op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 & (1 << (op0 - 1)));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));
}

/* shr reg1, reg2 */
void
OP_8007E0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = State.regs[OP[0]] & 0x1f;
  op1 = State.regs[OP[1]];
  result = op1 >> op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 & (1 << (op0 - 1)));

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));
}

void
OP_500 ()
{
}

void
OP_47C0 ()
{
}

/* or reg, reg */
void
OP_100 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op0 | op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

/* ori zero_extend(imm16), reg, reg */
void
OP_680 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = OP[0] & 0xffff;
  op1 = State.regs[OP[1]];
  result = op0 | op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[2]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

/* and reg, reg */
void
OP_140 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op0 & op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

/* andi zero_extend(imm16), reg, reg */
void
OP_6C0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = OP[0] & 0xffff;
  op1 = State.regs[OP[1]];
  result = op0 & op1;

  /* Compute the condition codes.  */
  z = (result == 0);

  /* Store the result and condition codes.  */
  State.regs[OP[2]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= (z ? PSW_Z : 0);
}

/* xor reg, reg */
void
OP_120 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  op1 = State.regs[OP[1]];
  result = op0 ^ op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

/* xori zero_extend(imm16), reg, reg */
void
OP_6A0 ()
{
  unsigned int op0, op1, result, z, s, cy, ov;

  op0 = OP[0] & 0xffff;
  op1 = State.regs[OP[1]];
  result = op0 ^ op1;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[2]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

/* not reg1, reg2 */
void
OP_20 ()
{
  unsigned int op0, result, z, s, cy, ov;

  /* Compute the result.  */
  op0 = State.regs[OP[0]];
  result = ~op0;

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  State.psw &= ~(PSW_Z | PSW_S | PSW_OV);
  State.psw |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
}

void
OP_C0 ()
{
}

void
OP_480 ()
{
}

void
OP_380 ()
{
}

void
OP_501 ()
{
}

/* di */
void
OP_16007E0 ()
{
  State.psw |= PSW_ID;
}

/* ei */
void
OP_16087E0 ()
{
  State.psw &= ~PSW_ID;
}

/* halt, not supported */
void
OP_12007E0 ()
{
  abort ();
}

/* reti, not supported */
void
OP_14007E0 ()
{
  abort ();
}

/* trap, not supportd */
void
OP_10007E0 ()
{
  abort ();
}

/* ldsr, not supported */
void
OP_2007E0 ()
{
  abort ();
}

/* stsr, not supported */
void
OP_4007E0 ()
{
  abort ();
}

void
OP_400 ()
{
}

void
OP_700 ()
{
}

void
OP_660 ()
{
}