binutils-gdb/sim/v850/simops.c

/* This must come before any other includes.  */
#include "defs.h"

#include "sim-main.h"
#include "sim-signal.h"
#include "v850_sim.h"
#include "simops.h"

#include <sys/types.h>

#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#include <time.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdlib.h>
#include <string.h>

#include "libiberty.h"

#include <errno.h>
#if !defined(__GO32__) && !defined(_WIN32)
#include <sys/stat.h>
#include <sys/times.h>
#include <sys/time.h>
#endif

#include "target-newlib-syscall.h"

/* This is an array of the bit positions of registers r20 .. r31 in
   that order in a prepare/dispose instruction.  */
int type1_regs[12] = { 27, 26, 25, 24, 31, 30, 29, 28, 23, 22, 0, 21 };
/* This is an array of the bit positions of registers r16 .. r31 in
   that order in a push/pop instruction.  */
int type2_regs[16] = { 3, 2, 1, 0, 27, 26, 25, 24, 31, 30, 29, 28, 23, 22, 20, 21};
/* This is an array of the bit positions of registers r1 .. r15 in
   that order in a push/pop instruction.  */
int type3_regs[15] = { 2, 1, 0, 27, 26, 25, 24, 31, 30, 29, 28, 23, 22, 20, 21};

#ifdef DEBUG
#ifndef SIZE_INSTRUCTION
#define SIZE_INSTRUCTION 18
#endif

#ifndef SIZE_VALUES
#define SIZE_VALUES 11
#endif


uint32_t   trace_values[3];
int          trace_num_values;
uint32_t   trace_pc;
const char * trace_name;
int          trace_module;


void
trace_input (char *name, enum op_types type, int size)
{
  if (!TRACE_ALU_P (STATE_CPU (simulator, 0)))
    return;

  trace_pc = PC;
  trace_name = name;
  trace_module = TRACE_ALU_IDX;

  switch (type)
    {
    default:
    case OP_UNKNOWN:
    case OP_NONE:
    case OP_TRAP:
      trace_num_values = 0;
      break;
      
    case OP_REG:
    case OP_REG_REG_MOVE:
      trace_values[0] = State.regs[OP[0]];
      trace_num_values = 1;
      break;
      
    case OP_BIT_CHANGE:
    case OP_REG_REG:
    case OP_REG_REG_CMP:
      trace_values[0] = State.regs[OP[1]];
      trace_values[1] = State.regs[OP[0]];
      trace_num_values = 2;
      break;
      
    case OP_IMM_REG:
    case OP_IMM_REG_CMP:
      trace_values[0] = SEXT5 (OP[0]);
      trace_values[1] = OP[1];
      trace_num_values = 2;
      break;
      
    case OP_IMM_REG_MOVE:
      trace_values[0] = SEXT5 (OP[0]);
      trace_num_values = 1;
      break;
      
    case OP_COND_BR:
      trace_values[0] = State.pc;
      trace_values[1] = SEXT9 (OP[0]);
      trace_values[2] = PSW;
      trace_num_values = 3;
      break;
      
    case OP_LOAD16:
      trace_values[0] = OP[1] * size;
      trace_values[1] = State.regs[30];
      trace_num_values = 2;
      break;
      
    case OP_STORE16:
      trace_values[0] = State.regs[OP[0]];
      trace_values[1] = OP[1] * size;
      trace_values[2] = State.regs[30];
      trace_num_values = 3;
      break;
      
    case OP_LOAD32:
      trace_values[0] = EXTEND16 (OP[2]);
      trace_values[1] = State.regs[OP[0]];
      trace_num_values = 2;
      break;
      
    case OP_STORE32:
      trace_values[0] = State.regs[OP[1]];
      trace_values[1] = EXTEND16 (OP[2]);
      trace_values[2] = State.regs[OP[0]];
      trace_num_values = 3;
      break;
      
    case OP_JUMP:
      trace_values[0] = SEXT22 (OP[0]);
      trace_values[1] = State.pc;
      trace_num_values = 2;
      break;
      
    case OP_IMM_REG_REG:
      trace_values[0] = EXTEND16 (OP[0]) << size;
      trace_values[1] = State.regs[OP[1]];
      trace_num_values = 2;
      break;
      
    case OP_IMM16_REG_REG:
      trace_values[0] = EXTEND16 (OP[2]) << size;
      trace_values[1] = State.regs[OP[1]];
      trace_num_values = 2;
      break;
      
    case OP_UIMM_REG_REG:
      trace_values[0] = (OP[0] & 0xffff) << size;
      trace_values[1] = State.regs[OP[1]];
      trace_num_values = 2;
      break;
      
    case OP_UIMM16_REG_REG:
      trace_values[0] = (OP[2]) << size;
      trace_values[1] = State.regs[OP[1]];
      trace_num_values = 2;
      break;
      
    case OP_BIT:
      trace_num_values = 0;
      break;
      
    case OP_EX1:
      trace_values[0] = PSW;
      trace_num_values = 1;
      break;
      
    case OP_EX2:
      trace_num_values = 0;
      break;
      
    case OP_LDSR:
      trace_values[0] = State.regs[OP[0]];
      trace_num_values = 1;
      break;
      
    case OP_STSR:
      trace_values[0] = State.sregs[OP[1]];
      trace_num_values = 1;
    }
  
}

void
trace_result (int has_result, uint32_t result)
{
  char buf[1000];
  char *chp;

  buf[0] = '\0';
  chp = buf;

  /* write out the values saved during the trace_input call */
  {
    int i;
    for (i = 0; i < trace_num_values; i++)
      {
	sprintf (chp, "%*s0x%.8lx", SIZE_VALUES - 10, "",
		 (long) trace_values[i]);
	chp = strchr (chp, '\0');
      }
    while (i++ < 3)
      {
	sprintf (chp, "%*s", SIZE_VALUES, "");
	chp = strchr (chp, '\0');
      }
  }

  /* append any result to the end of the buffer */
  if (has_result)
    sprintf (chp, " :: 0x%.8lx", (unsigned long) result);
  
  trace_generic (simulator, STATE_CPU (simulator, 0), trace_module, "%s", buf);
}

void
trace_output (enum op_types result)
{
  if (!TRACE_ALU_P (STATE_CPU (simulator, 0)))
    return;

  switch (result)
    {
    default:
    case OP_UNKNOWN:
    case OP_NONE:
    case OP_TRAP:
    case OP_REG:
    case OP_REG_REG_CMP:
    case OP_IMM_REG_CMP:
    case OP_COND_BR:
    case OP_STORE16:
    case OP_STORE32:
    case OP_BIT:
    case OP_EX2:
      trace_result (0, 0);
      break;
      
    case OP_LOAD16:
    case OP_STSR:
      trace_result (1, State.regs[OP[0]]);
      break;
      
    case OP_REG_REG:
    case OP_REG_REG_MOVE:
    case OP_IMM_REG:
    case OP_IMM_REG_MOVE:
    case OP_LOAD32:
    case OP_EX1:
      trace_result (1, State.regs[OP[1]]);
      break;
      
    case OP_IMM_REG_REG:
    case OP_UIMM_REG_REG:
    case OP_IMM16_REG_REG:
    case OP_UIMM16_REG_REG:
      trace_result (1, State.regs[OP[1]]);
      break;
      
    case OP_JUMP:
      if (OP[1] != 0)
	trace_result (1, State.regs[OP[1]]);
      else
	trace_result (0, 0);
      break;
      
    case OP_LDSR:
      trace_result (1, State.sregs[OP[1]]);
      break;
    }
}
#endif


/* Returns 1 if the specific condition is met, returns 0 otherwise.  */
int
condition_met (unsigned code)
{
  unsigned int psw = PSW;

  switch (code & 0xf)
    {
      case 0x0: return ((psw & PSW_OV) != 0); 
      case 0x1:	return ((psw & PSW_CY) != 0);
      case 0x2:	return ((psw & PSW_Z) != 0);
      case 0x3:	return ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) != 0);
      case 0x4:	return ((psw & PSW_S) != 0);
    /*case 0x5:	return 1;*/
      case 0x6: return ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) != 0);
      case 0x7:	return (((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) || ((psw & PSW_Z) != 0)) != 0);
      case 0x8:	return ((psw & PSW_OV) == 0);
      case 0x9:	return ((psw & PSW_CY) == 0);
      case 0xa:	return ((psw & PSW_Z) == 0);
      case 0xb:	return ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) == 0);
      case 0xc:	return ((psw & PSW_S) == 0);
      case 0xd:	return ((psw & PSW_SAT) != 0);
      case 0xe:	return ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) == 0);
      case 0xf:	return (((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) || ((psw & PSW_Z) != 0)) == 0);
    }
  
  return 1;
}

unsigned long
Add32 (unsigned long a1, unsigned long a2, int * carry)
{
  unsigned long result = (a1 + a2);

  * carry = (result < a1);

  return result;
}

static void
Multiply64 (int sign, unsigned long op0)
{
  unsigned long op1;
  unsigned long lo;
  unsigned long mid1;
  unsigned long mid2;
  unsigned long hi;
  unsigned long RdLo;
  unsigned long RdHi;
  int           carry;
  
  op1 = State.regs[ OP[1] ];

  if (sign)
    {
      /* Compute sign of result and adjust operands if necessary.  */
	  
      sign = (op0 ^ op1) & 0x80000000;
	  
      if (op0 & 0x80000000)
	op0 = - op0;
	  
      if (op1 & 0x80000000)
	op1 = - op1;
    }
      
  /* We can split the 32x32 into four 16x16 operations. This ensures
     that we do not lose precision on 32bit only hosts: */
  lo   = ( (op0        & 0xFFFF) *  (op1        & 0xFFFF));
  mid1 = ( (op0        & 0xFFFF) * ((op1 >> 16) & 0xFFFF));
  mid2 = (((op0 >> 16) & 0xFFFF) *  (op1        & 0xFFFF));
  hi   = (((op0 >> 16) & 0xFFFF) * ((op1 >> 16) & 0xFFFF));
  
  /* We now need to add all of these results together, taking care
     to propogate the carries from the additions: */
  RdLo = Add32 (lo, (mid1 << 16), & carry);
  RdHi = carry;
  RdLo = Add32 (RdLo, (mid2 << 16), & carry);
  RdHi += (carry + ((mid1 >> 16) & 0xFFFF) + ((mid2 >> 16) & 0xFFFF) + hi);

  if (sign)
    {
      /* Negate result if necessary.  */
      
      RdLo = ~ RdLo;
      RdHi = ~ RdHi;
      if (RdLo == 0xFFFFFFFF)
	{
	  RdLo = 0;
	  RdHi += 1;
	}
      else
	RdLo += 1;
    }
  
  /* Don't store into register 0.  */
  if (OP[1])
    State.regs[ OP[1]       ] = RdLo;
  if (OP[2] >> 11)
    State.regs[ OP[2] >> 11 ] = RdHi;

  return;
}


/* Read a null terminated string from memory, return in a buffer.  */

static char *
fetch_str (SIM_DESC sd, address_word addr)
{
  char *buf;
  int nr = 0;

  while (sim_core_read_1 (STATE_CPU (sd, 0),
			  PC, read_map, addr + nr) != 0)
    nr++;

  buf = NZALLOC (char, nr + 1);
  sim_read (simulator, addr, (unsigned char *) buf, nr);

  return buf;
}

/* Read a null terminated argument vector from memory, return in a
   buffer.  */

static char **
fetch_argv (SIM_DESC sd, address_word addr)
{
  int max_nr = 64;
  int nr = 0;
  char **buf = xmalloc (max_nr * sizeof (char*));

  while (1)
    {
      uint32_t a = sim_core_read_4 (STATE_CPU (sd, 0),
				      PC, read_map, addr + nr * 4);
      if (a == 0) break;
      buf[nr] = fetch_str (sd, a);
      nr ++;
      if (nr == max_nr - 1)
	{
	  max_nr += 50;
	  buf = xrealloc (buf, max_nr * sizeof (char*));
	}
    }
  buf[nr] = 0;
  return buf;
}


/* sst.b */
int
OP_380 (void)
{
  trace_input ("sst.b", OP_STORE16, 1);

  store_mem (State.regs[30] + (OP[3] & 0x7f), 1, State.regs[ OP[1] ]);
  
  trace_output (OP_STORE16);

  return 2;
}

/* sst.h */
int
OP_480 (void)
{
  trace_input ("sst.h", OP_STORE16, 2);

  store_mem (State.regs[30] + ((OP[3] & 0x7f) << 1), 2, State.regs[ OP[1] ]);
  
  trace_output (OP_STORE16);

  return 2;
}

/* sst.w */
int
OP_501 (void)
{
  trace_input ("sst.w", OP_STORE16, 4);

  store_mem (State.regs[30] + ((OP[3] & 0x7e) << 1), 4, State.regs[ OP[1] ]);
  
  trace_output (OP_STORE16);

  return 2;
}

/* ld.b */
int
OP_700 (void)
{
  int adr;

  trace_input ("ld.b", OP_LOAD32, 1);

  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2]);

  State.regs[ OP[1] ] = EXTEND8 (load_mem (adr, 1));
  
  trace_output (OP_LOAD32);

  return 4;
}

/* ld.h */
int
OP_720 (void)
{
  int adr;

  trace_input ("ld.h", OP_LOAD32, 2);

  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2]);
  adr &= ~0x1;
  
  State.regs[ OP[1] ] = EXTEND16 (load_mem (adr, 2));
  
  trace_output (OP_LOAD32);

  return 4;
}

/* ld.w */
int
OP_10720 (void)
{
  int adr;

  trace_input ("ld.w", OP_LOAD32, 4);

  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1);
  adr &= ~0x3;
  
  State.regs[ OP[1] ] = load_mem (adr, 4);
  
  trace_output (OP_LOAD32);

  return 4;
}

/* st.b */
int
OP_740 (void)
{
  trace_input ("st.b", OP_STORE32, 1);

  store_mem (State.regs[ OP[0] ] + EXTEND16 (OP[2]), 1, State.regs[ OP[1] ]);
  
  trace_output (OP_STORE32);

  return 4;
}

/* st.h */
int
OP_760 (void)
{
  int adr;
  
  trace_input ("st.h", OP_STORE32, 2);

  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2]);
  adr &= ~1;
  
  store_mem (adr, 2, State.regs[ OP[1] ]);
  
  trace_output (OP_STORE32);

  return 4;
}

/* st.w */
int
OP_10760 (void)
{
  int adr;
  
  trace_input ("st.w", OP_STORE32, 4);

  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1);
  adr &= ~3;
  
  store_mem (adr, 4, State.regs[ OP[1] ]);
  
  trace_output (OP_STORE32);

  return 4;
}

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

  trace_input ("add", OP_REG_REG, 0);
  
  /* 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;
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		     | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
  trace_output (OP_REG_REG);

  return 2;
}

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

  trace_input ("add", OP_IMM_REG, 0);

  /* Compute the result.  */
  temp = SEXT5 (OP[0]);
  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;
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
  trace_output (OP_IMM_REG);

  return 2;
}

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

  trace_input ("addi", OP_IMM16_REG_REG, 0);

  /* Compute the result.  */

  op0 = EXTEND16 (OP[2]);
  op1 = State.regs[ OP[0] ];
  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;
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
  trace_output (OP_IMM16_REG_REG);

  return 4;
}

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

  trace_input ("sub", OP_REG_REG, 0);
  /* 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 = (op1 < op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));

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

  return 2;
}

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

  trace_input ("subr", OP_REG_REG, 0);
  /* 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 = (op0 < op1);
  ov = ((op0 & 0x80000000) != (op1 & 0x80000000)
	&& (op0 & 0x80000000) != (result & 0x80000000));

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

  return 2;
}

/* sxh reg1 */
int
OP_E0 (void)
{
  trace_input ("mulh", OP_REG_REG, 0);
      
  State.regs[ OP[1] ] = (EXTEND16 (State.regs[ OP[1] ]) * EXTEND16 (State.regs[ OP[0] ]));
      
  trace_output (OP_REG_REG);

  return 2;
}

/* mulh sign_extend(imm5), reg2 */
int
OP_2E0 (void)
{
  trace_input ("mulh", OP_IMM_REG, 0);
  
  State.regs[ OP[1] ] = EXTEND16 (State.regs[ OP[1] ]) * SEXT5 (OP[0]);
  
  trace_output (OP_IMM_REG);

  return 2;
}

/* mulhi imm16, reg1, reg2 */
int
OP_6E0 (void)
{
  trace_input ("mulhi", OP_IMM16_REG_REG, 0);
  
  State.regs[ OP[1] ] = EXTEND16 (State.regs[ OP[0] ]) * EXTEND16 (OP[2]);
      
  trace_output (OP_IMM16_REG_REG);
  
  return 4;
}

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

  trace_input ("cmp", OP_REG_REG_CMP, 0);
  /* 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 = (op1 < op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));

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

  return 2;
}

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

  /* Compute the result.  */
  trace_input ("cmp", OP_IMM_REG_CMP, 0);
  temp = SEXT5 (OP[0]);
  op0 = temp;
  op1 = State.regs[OP[1]];
  result = op1 - op0;

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

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

  return 2;
}

/* setf cccc,reg2 */
int
OP_7E0 (void)
{
  trace_input ("setf", OP_EX1, 0);

  State.regs[ OP[1] ] = condition_met (OP[0]);
  
  trace_output (OP_EX1);

  return 4;
}

/* satadd reg,reg */
int
OP_C0 (void)
{
  unsigned int op0, op1, result, z, s, cy, ov, sat;
  
  trace_input ("satadd", OP_REG_REG, 0);
  /* 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));
  sat = ov;
  
  /* Handle saturated results.  */
  if (sat && s)
    {
      /* An overflow that results in a negative result implies that we
	 became too positive.  */
      result = 0x7fffffff;
      s = 0;
    }
  else if (sat)
    {
      /* Any other overflow must have thus been too negative.  */
      result = 0x80000000;
      s = 1;
      z = 0;
    }

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

  trace_output (OP_REG_REG);

  return 2;
}

/* satadd sign_extend(imm5), reg */
int
OP_220 (void)
{
  unsigned int op0, op1, result, z, s, cy, ov, sat;

  int temp;

  trace_input ("satadd", OP_IMM_REG, 0);

  /* Compute the result.  */
  temp = SEXT5 (OP[0]);
  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));
  sat = ov;

  /* Handle saturated results.  */
  if (sat && s)
    {
      /* An overflow that results in a negative result implies that we
	 became too positive.  */
      result = 0x7fffffff;
      s = 0;
    }
  else if (sat)
    {
      /* Any other overflow must have thus been too negative.  */
      result = 0x80000000;
      s = 1;
      z = 0;
    }

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

  return 2;
}

/* satsub reg1, reg2 */
int
OP_A0 (void)
{
  unsigned int op0, op1, result, z, s, cy, ov, sat;
  
  trace_input ("satsub", OP_REG_REG, 0);
  
  /* 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 = (op1 < op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));
  sat = ov;

  /* Handle saturated results.  */
  if (sat && s)
    {
      /* An overflow that results in a negative result implies that we
	 became too positive.  */
      result = 0x7fffffff;
      s = 0;
    }
  else if (sat)
    {
      /* Any other overflow must have thus been too negative.  */
      result = 0x80000000;
      s = 1;
      z = 0;
    }

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
	  | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
	  | (sat ? PSW_SAT : 0));
  
  trace_output (OP_REG_REG);
  return 2;
}

/* satsubi sign_extend(imm16), reg */
int
OP_660 (void)
{
  unsigned int op0, op1, result, z, s, cy, ov, sat;
  int temp;

  trace_input ("satsubi", OP_IMM_REG, 0);

  /* Compute the result.  */
  temp = EXTEND16 (OP[2]);
  op0 = temp;
  op1 = State.regs[ OP[0] ];
  result = op1 - op0;

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

  /* Handle saturated results.  */
  if (sat && s)
    {
      /* An overflow that results in a negative result implies that we
	 became too positive.  */
      result = 0x7fffffff;
      s = 0;
    }
  else if (sat)
    {
      /* Any other overflow must have thus been too negative.  */
      result = 0x80000000;
      s = 1;
      z = 0;
    }

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

  trace_output (OP_IMM_REG);

  return 4;
}

/* satsubr reg,reg */
int
OP_80 (void)
{
  unsigned int op0, op1, result, z, s, cy, ov, sat;
  
  trace_input ("satsubr", OP_REG_REG, 0);
  
  /* 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 = (op0 < op1);
  ov = ((op0 & 0x80000000) != (op1 & 0x80000000)
	&& (op0 & 0x80000000) != (result & 0x80000000));
  sat = ov;

  /* Handle saturated results.  */
  if (sat && s)
    {
      /* An overflow that results in a negative result implies that we
	 became too positive.  */
      result = 0x7fffffff;
      s = 0;
    }
  else if (sat)
    {
      /* Any other overflow must have thus been too negative.  */
      result = 0x80000000;
      s = 1;
      z = 0;
    }
  
  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
	  | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
	  | (sat ? PSW_SAT : 0));
  
  trace_output (OP_REG_REG);

  return 2;
}

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

  trace_input ("tst", OP_REG_REG_CMP, 0);

  /* 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.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_REG_REG_CMP);

  return 2;
}

/* mov sign_extend(imm5), reg */
int
OP_200 (void)
{
  int value = SEXT5 (OP[0]);
  
  trace_input ("mov", OP_IMM_REG_MOVE, 0);
  
  State.regs[ OP[1] ] = value;
  
  trace_output (OP_IMM_REG_MOVE);
  
  return 2;
}

/* movhi imm16, reg, reg */
int
OP_640 (void)
{
  trace_input ("movhi", OP_UIMM16_REG_REG, 16);
      
  State.regs[ OP[1] ] = State.regs[ OP[0] ] + (OP[2] << 16);
      
  trace_output (OP_UIMM16_REG_REG);

  return 4;
}

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

  trace_input ("sar", OP_IMM_REG, 0);
  op0 = OP[0];
  op1 = State.regs[ OP[1] ];
  result = (signed)op1 >> op0;

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

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

  return 2;
}

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

  trace_input ("sar", OP_REG_REG, 0);
  
  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 = op0 ? (op1 & (1 << (op0 - 1))) : 0;

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

  return 4;
}

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

  trace_input ("shl", OP_IMM_REG, 0);
  op0 = OP[0];
  op1 = State.regs[ OP[1] ];
  result = op1 << op0;

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

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

  return 2;
}

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

  trace_input ("shl", OP_REG_REG, 0);
  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 = op0 ? (op1 & (1 << (32 - op0))) : 0;

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

  return 4;
}

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

  trace_input ("shr", OP_IMM_REG, 0);
  op0 = OP[0];
  op1 = State.regs[ OP[1] ];
  result = op1 >> op0;

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

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

  return 2;
}

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

  trace_input ("shr", OP_REG_REG, 0);
  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 = op0 ? (op1 & (1 << (op0 - 1))) : 0;

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

  return 4;
}

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

  trace_input ("or", OP_REG_REG, 0);

  /* 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;
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_REG_REG);

  return 2;
}

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

  trace_input ("ori", OP_UIMM16_REG_REG, 0);
  op0 = OP[2];
  op1 = State.regs[ OP[0] ];
  result = op0 | op1;

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

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_UIMM16_REG_REG);

  return 4;
}

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

  trace_input ("and", OP_REG_REG, 0);

  /* 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;
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_REG_REG);

  return 2;
}

/* andi zero_extend(imm16), reg, reg */
int
OP_6C0 (void)
{
  unsigned int result, z;

  trace_input ("andi", OP_UIMM16_REG_REG, 0);

  result = OP[2] & State.regs[ OP[0] ];

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

  /* Store the result and condition codes.  */
  State.regs[ OP[1] ] = result;
  
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= (z ? PSW_Z : 0);
  
  trace_output (OP_UIMM16_REG_REG);

  return 4;
}

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

  trace_input ("xor", OP_REG_REG, 0);

  /* 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;
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_REG_REG);

  return 2;
}

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

  trace_input ("xori", OP_UIMM16_REG_REG, 0);
  op0 = OP[2];
  op1 = State.regs[ OP[0] ];
  result = op0 ^ op1;

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

  /* Store the result and condition codes.  */
  State.regs[OP[1]] = result;
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_UIMM16_REG_REG);

  return 4;
}

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

  trace_input ("not", OP_REG_REG_MOVE, 0);
  /* 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;
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
  trace_output (OP_REG_REG_MOVE);

  return 2;
}

/* set1 */
int
OP_7C0 (void)
{
  unsigned int op0, op1, op2;
  int temp;

  trace_input ("set1", OP_BIT, 0);
  op0 = State.regs[ OP[0] ];
  op1 = OP[1] & 0x7;
  temp = EXTEND16 (OP[2]);
  op2 = temp;
  temp = load_mem (op0 + op2, 1);
  PSW &= ~PSW_Z;
  if ((temp & (1 << op1)) == 0)
    PSW |= PSW_Z;
  temp |= (1 << op1);
  store_mem (op0 + op2, 1, temp);
  trace_output (OP_BIT);

  return 4;
}

/* not1 */
int
OP_47C0 (void)
{
  unsigned int op0, op1, op2;
  int temp;

  trace_input ("not1", OP_BIT, 0);
  op0 = State.regs[ OP[0] ];
  op1 = OP[1] & 0x7;
  temp = EXTEND16 (OP[2]);
  op2 = temp;
  temp = load_mem (op0 + op2, 1);
  PSW &= ~PSW_Z;
  if ((temp & (1 << op1)) == 0)
    PSW |= PSW_Z;
  temp ^= (1 << op1);
  store_mem (op0 + op2, 1, temp);
  trace_output (OP_BIT);

  return 4;
}

/* clr1 */
int
OP_87C0 (void)
{
  unsigned int op0, op1, op2;
  int temp;

  trace_input ("clr1", OP_BIT, 0);
  op0 = State.regs[ OP[0] ];
  op1 = OP[1] & 0x7;
  temp = EXTEND16 (OP[2]);
  op2 = temp;
  temp = load_mem (op0 + op2, 1);
  PSW &= ~PSW_Z;
  if ((temp & (1 << op1)) == 0)
    PSW |= PSW_Z;
  temp &= ~(1 << op1);
  store_mem (op0 + op2, 1, temp);
  trace_output (OP_BIT);

  return 4;
}

/* tst1 */
int
OP_C7C0 (void)
{
  unsigned int op0, op1, op2;
  int temp;

  trace_input ("tst1", OP_BIT, 0);
  op0 = State.regs[ OP[0] ];
  op1 = OP[1] & 0x7;
  temp = EXTEND16 (OP[2]);
  op2 = temp;
  temp = load_mem (op0 + op2, 1);
  PSW &= ~PSW_Z;
  if ((temp & (1 << op1)) == 0)
    PSW |= PSW_Z;
  trace_output (OP_BIT);

  return 4;
}

/* di */
int
OP_16007E0 (void)
{
  trace_input ("di", OP_NONE, 0);
  PSW |= PSW_ID;
  trace_output (OP_NONE);

  return 4;
}

/* ei */
int
OP_16087E0 (void)
{
  trace_input ("ei", OP_NONE, 0);
  PSW &= ~PSW_ID;
  trace_output (OP_NONE);

  return 4;
}

/* halt */
int
OP_12007E0 (void)
{
  trace_input ("halt", OP_NONE, 0);
  /* FIXME this should put processor into a mode where NMI still handled */
  trace_output (OP_NONE);
  sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
		   sim_stopped, SIM_SIGTRAP);
  return 0;
}

/* trap */
int
OP_10007E0 (void)
{
  trace_input ("trap", OP_TRAP, 0);
  trace_output (OP_TRAP);

  /* Trap 31 is used for simulating OS I/O functions */

  if (OP[0] == 31)
    {
      int save_errno = errno;	
      errno = 0;

/* Registers passed to trap 0 */

#define FUNC   State.regs[6]	/* function number, return value */
#define PARM1  State.regs[7]	/* optional parm 1 */
#define PARM2  State.regs[8]	/* optional parm 2 */
#define PARM3  State.regs[9]	/* optional parm 3 */

/* Registers set by trap 0 */

#define RETVAL State.regs[10]	/* return value */
#define RETERR State.regs[11]	/* return error code */

/* Turn a pointer in a register into a pointer into real memory. */

#define MEMPTR(x) (map (x))

      RETERR = 0;

      switch (FUNC)
	{

#ifdef HAVE_FORK
	case TARGET_NEWLIB_V850_SYS_fork:
	  RETVAL = fork ();
	  RETERR = errno;
	  break;
#endif

#ifdef HAVE_EXECVE
	case TARGET_NEWLIB_V850_SYS_execve:
	  {
	    char *path = fetch_str (simulator, PARM1);
	    char **argv = fetch_argv (simulator, PARM2);
	    char **envp = fetch_argv (simulator, PARM3);
	    RETVAL = execve (path, (void *)argv, (void *)envp);
	    free (path);
	    freeargv (argv);
	    freeargv (envp);
	    RETERR = errno;
	    break;
	  }
#endif

#if HAVE_EXECV
	case TARGET_NEWLIB_V850_SYS_execv:
	  {
	    char *path = fetch_str (simulator, PARM1);
	    char **argv = fetch_argv (simulator, PARM2);
	    RETVAL = execv (path, (void *)argv);
	    free (path);
	    freeargv (argv);
	    RETERR = errno;
	    break;
	  }
#endif

#if 0
	case TARGET_NEWLIB_V850_SYS_pipe:
	  {
	    reg_t buf;
	    int host_fd[2];

	    buf = PARM1;
	    RETVAL = pipe (host_fd);
	    SW (buf, host_fd[0]);
	    buf += sizeof (uint16_t);
	    SW (buf, host_fd[1]);
	    RETERR = errno;
	  }
	  break;
#endif

#if 0
	case TARGET_NEWLIB_V850_SYS_wait:
	  {
	    int status;

	    RETVAL = wait (&status);
	    SW (PARM1, status);
	    RETERR = errno;
	  }
	  break;
#endif

	case TARGET_NEWLIB_V850_SYS_read:
	  {
	    char *buf = zalloc (PARM3);
	    RETVAL = sim_io_read (simulator, PARM1, buf, PARM3);
	    sim_write (simulator, PARM2, (unsigned char *) buf, PARM3);
	    free (buf);
	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	    break;
	  }

	case TARGET_NEWLIB_V850_SYS_write:
	  {
	    char *buf = zalloc (PARM3);
	    sim_read (simulator, PARM2, (unsigned char *) buf, PARM3);
	    if (PARM1 == 1)
	      RETVAL = sim_io_write_stdout (simulator, buf, PARM3);
	    else
	      RETVAL = sim_io_write (simulator, PARM1, buf, PARM3);
	    free (buf);
	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	    break;
	  }

	case TARGET_NEWLIB_V850_SYS_lseek:
	  RETVAL = sim_io_lseek (simulator, PARM1, PARM2, PARM3);
	  if ((int) RETVAL < 0)
	    RETERR = sim_io_get_errno (simulator);
	  break;

	case TARGET_NEWLIB_V850_SYS_close:
	  RETVAL = sim_io_close (simulator, PARM1);
	  if ((int) RETVAL < 0)
	    RETERR = sim_io_get_errno (simulator);
	  break;

	case TARGET_NEWLIB_V850_SYS_open:
	  {
	    char *buf = fetch_str (simulator, PARM1);
	    RETVAL = sim_io_open (simulator, buf, PARM2);
	    free (buf);
	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	    break;
	  }

	case TARGET_NEWLIB_V850_SYS_exit:
	  if ((PARM1 & 0xffff0000) == 0xdead0000 && (PARM1 & 0xffff) != 0)
	    /* get signal encoded by kill */
	    sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
			     sim_signalled, PARM1 & 0xffff);
	  else if (PARM1 == 0xdead)
	    /* old libraries */
	    sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
			     sim_stopped, SIM_SIGABRT);
	  else
	    /* PARM1 has exit status */
	    sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
			     sim_exited, PARM1);
	  break;

	case TARGET_NEWLIB_V850_SYS_stat:	/* added at hmsi */
	  /* stat system call */
	  {
	    struct stat host_stat;
	    reg_t buf;
	    char *path = fetch_str (simulator, PARM1);

	    RETVAL = sim_io_stat (simulator, path, &host_stat);

	    free (path);
	    buf = PARM2;

	    /* Just wild-assed guesses.  */
	    store_mem (buf, 2, host_stat.st_dev);
	    store_mem (buf + 2, 2, host_stat.st_ino);
	    store_mem (buf + 4, 4, host_stat.st_mode);
	    store_mem (buf + 8, 2, host_stat.st_nlink);
	    store_mem (buf + 10, 2, host_stat.st_uid);
	    store_mem (buf + 12, 2, host_stat.st_gid);
	    store_mem (buf + 14, 2, host_stat.st_rdev);
	    store_mem (buf + 16, 4, host_stat.st_size);
	    store_mem (buf + 20, 4, host_stat.st_atime);
	    store_mem (buf + 28, 4, host_stat.st_mtime);
	    store_mem (buf + 36, 4, host_stat.st_ctime);

	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	  }
	  break;

	case TARGET_NEWLIB_V850_SYS_fstat:
	  /* fstat system call */
	  {
	    struct stat host_stat;
	    reg_t buf;

	    RETVAL = sim_io_fstat (simulator, PARM1, &host_stat);

	    buf = PARM2;

	    /* Just wild-assed guesses.  */
	    store_mem (buf, 2, host_stat.st_dev);
	    store_mem (buf + 2, 2, host_stat.st_ino);
	    store_mem (buf + 4, 4, host_stat.st_mode);
	    store_mem (buf + 8, 2, host_stat.st_nlink);
	    store_mem (buf + 10, 2, host_stat.st_uid);
	    store_mem (buf + 12, 2, host_stat.st_gid);
	    store_mem (buf + 14, 2, host_stat.st_rdev);
	    store_mem (buf + 16, 4, host_stat.st_size);
	    store_mem (buf + 20, 4, host_stat.st_atime);
	    store_mem (buf + 28, 4, host_stat.st_mtime);
	    store_mem (buf + 36, 4, host_stat.st_ctime);

	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	  }
	  break;

	case TARGET_NEWLIB_V850_SYS_rename:
	  {
	    char *oldpath = fetch_str (simulator, PARM1);
	    char *newpath = fetch_str (simulator, PARM2);
	    RETVAL = sim_io_rename (simulator, oldpath, newpath);
	    free (oldpath);
	    free (newpath);
	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	  }
	  break;

	case TARGET_NEWLIB_V850_SYS_unlink:
	  {
	    char *path = fetch_str (simulator, PARM1);
	    RETVAL = sim_io_unlink (simulator, path);
	    free (path);
	    if ((int) RETVAL < 0)
	      RETERR = sim_io_get_errno (simulator);
	  }
	  break;

	case TARGET_NEWLIB_V850_SYS_chown:
	  {
	    char *path = fetch_str (simulator, PARM1);
	    RETVAL = chown (path, PARM2, PARM3);
	    free (path);
	    RETERR = errno;
	  }
	  break;

#if HAVE_CHMOD
	case TARGET_NEWLIB_V850_SYS_chmod:
	  {
	    char *path = fetch_str (simulator, PARM1);
	    RETVAL = chmod (path, PARM2);
	    free (path);
	    RETERR = errno;
	  }
	  break;
#endif

#if HAVE_TIME
	case TARGET_NEWLIB_V850_SYS_time:
	  {
	    time_t now;
	    RETVAL = time (&now);
	    store_mem (PARM1, 4, now);
	    RETERR = errno;
	  }
	  break;
#endif

#if !defined(__GO32__) && !defined(_WIN32)
	case TARGET_NEWLIB_V850_SYS_times:
	  {
	    struct tms tms;
	    RETVAL = times (&tms);
	    store_mem (PARM1, 4, tms.tms_utime);
	    store_mem (PARM1 + 4, 4, tms.tms_stime);
	    store_mem (PARM1 + 8, 4, tms.tms_cutime);
	    store_mem (PARM1 + 12, 4, tms.tms_cstime);
	    RETERR = errno;
	    break;
	  }
#endif

#if !defined(__GO32__) && !defined(_WIN32)
	case TARGET_NEWLIB_V850_SYS_gettimeofday:
	  {
	    struct timeval t;
	    struct timezone tz;
	    RETVAL = gettimeofday (&t, &tz);
	    store_mem (PARM1, 4, t.tv_sec);
	    store_mem (PARM1 + 4, 4, t.tv_usec);
	    store_mem (PARM2, 4, tz.tz_minuteswest);
	    store_mem (PARM2 + 4, 4, tz.tz_dsttime);
	    RETERR = errno;
	    break;
	  }
#endif

#if HAVE_UTIME
	case TARGET_NEWLIB_V850_SYS_utime:
	  {
	    /* Cast the second argument to void *, to avoid type mismatch
	       if a prototype is present.  */
	    sim_io_error (simulator, "Utime not supported");
	    /* RETVAL = utime (path, (void *) MEMPTR (PARM2)); */
	  }
	  break;
#endif

	default:
	  abort ();
	}
      errno = save_errno;

      return 4;
    }
  else
    {				/* Trap 0 -> 30 */
      EIPC = PC + 4;
      EIPSW = PSW;
      /* Mask out EICC */
      ECR &= 0xffff0000;
      ECR |= 0x40 + OP[0];
      /* Flag that we are now doing exception processing.  */
      PSW |= PSW_EP | PSW_ID;
      PC = (OP[0] < 0x10) ? 0x40 : 0x50;

      return 0;
    }
}

/* tst1 reg2, [reg1] */
int
OP_E607E0 (void)
{
  int temp;

  trace_input ("tst1", OP_BIT, 1);

  temp = load_mem (State.regs[ OP[0] ], 1);
  
  PSW &= ~PSW_Z;
  if ((temp & (1 << (State.regs[ OP[1] ] & 0x7))) == 0)
    PSW |= PSW_Z;
  
  trace_output (OP_BIT);

  return 4;
}

/* mulu reg1, reg2, reg3 */
int
OP_22207E0 (void)
{
  trace_input ("mulu", OP_REG_REG_REG, 0);

  Multiply64 (0, State.regs[ OP[0] ]);

  trace_output (OP_REG_REG_REG);

  return 4;
}

#define BIT_CHANGE_OP( name, binop )		\
  unsigned int bit;				\
  unsigned int temp;				\
  						\
  trace_input (name, OP_BIT_CHANGE, 0);		\
  						\
  bit  = 1 << (State.regs[ OP[1] ] & 0x7);	\
  temp = load_mem (State.regs[ OP[0] ], 1);	\
						\
  PSW &= ~PSW_Z;				\
  if ((temp & bit) == 0)			\
    PSW |= PSW_Z;				\
  temp binop bit;				\
  						\
  store_mem (State.regs[ OP[0] ], 1, temp);	\
	     					\
  trace_output (OP_BIT_CHANGE);			\
	     					\
  return 4;

/* clr1 reg2, [reg1] */
int
OP_E407E0 (void)
{
  BIT_CHANGE_OP ("clr1", &= ~ );
}

/* not1 reg2, [reg1] */
int
OP_E207E0 (void)
{
  BIT_CHANGE_OP ("not1", ^= );
}

/* set1 */
int
OP_E007E0 (void)
{
  BIT_CHANGE_OP ("set1", |= );
}

/* sasf */
int
OP_20007E0 (void)
{
  trace_input ("sasf", OP_EX1, 0);
  
  State.regs[ OP[1] ] = (State.regs[ OP[1] ] << 1) | condition_met (OP[0]);
  
  trace_output (OP_EX1);

  return 4;
}

/* This function is courtesy of Sugimoto at NEC, via Seow Tan
   (Soew_Tan@el.nec.com) */
void
divun
(
  unsigned int       N,
  unsigned long int  als,
  unsigned long int  sfi,
  uint32_t /*unsigned long int*/ *  quotient_ptr,
  uint32_t /*unsigned long int*/ *  remainder_ptr,
  int *          overflow_ptr
)
{
  unsigned long   ald = sfi >> (N - 1);
  unsigned long   alo = als;
  unsigned int    Q   = 1;
  unsigned int    C;
  unsigned int    S   = 0;
  unsigned int    i;
  unsigned int    R1  = 1;
  unsigned int    DBZ = (als == 0) ? 1 : 0;
  unsigned long   alt = Q ? ~als : als;

  /* 1st Loop */
  alo = ald + alt + Q;
  C   = (((alt >> 31) & (ald >> 31))
	 | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
  C   = C ^ Q;
  Q   = ~(C ^ S) & 1;
  R1  = (alo == 0) ? 0 : (R1 & Q);
  if ((S ^ (alo>>31)) && !C)
    {
      DBZ = 1;
    }
  S   = alo >> 31;
  sfi = (sfi << (32-N+1)) | Q;
  ald = (alo << 1) | (sfi >> 31);

  /* 2nd - N-1th Loop */
  for (i = 2; i < N; i++)
    {
      alt = Q ? ~als : als;
      alo = ald + alt + Q;
      C   = (((alt >> 31) & (ald >> 31))
	     | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
      C   = C ^ Q;
      Q   = ~(C ^ S) & 1;
      R1  = (alo == 0) ? 0 : (R1 & Q);
      if ((S ^ (alo>>31)) && !C && !DBZ)
	{
	  DBZ = 1;
	}
      S   = alo >> 31;
      sfi = (sfi << 1) | Q;
      ald = (alo << 1) | (sfi >> 31);
    }
  
  /* Nth Loop */
  alt = Q ? ~als : als;
  alo = ald + alt + Q;
  C   = (((alt >> 31) & (ald >> 31))
	 | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
  C   = C ^ Q;
  Q   = ~(C ^ S) & 1;
  R1  = (alo == 0) ? 0 : (R1 & Q);
  if ((S ^ (alo>>31)) && !C)
    {
      DBZ = 1;
    }
  
  * quotient_ptr  = (sfi << 1) | Q;
  * remainder_ptr = Q ? alo : (alo + als);
  * overflow_ptr  = DBZ | R1;
}

/* This function is courtesy of Sugimoto at NEC, via Seow Tan (Soew_Tan@el.nec.com) */
void
divn
(
  unsigned int       N,
  unsigned long int  als,
  unsigned long int  sfi,
  int32_t /*signed long int*/ *  quotient_ptr,
  int32_t /*signed long int*/ *  remainder_ptr,
  int *          overflow_ptr
)
{
  unsigned long	  ald = (signed long) sfi >> (N - 1);
  unsigned long   alo = als;
  unsigned int    SS  = als >> 31;
  unsigned int	  SD  = sfi >> 31;
  unsigned int    R1  = 1;
  unsigned int    OV;
  unsigned int    DBZ = als == 0 ? 1 : 0;
  unsigned int    Q   = ~(SS ^ SD) & 1;
  unsigned int    C;
  unsigned int    S;
  unsigned int    i;
  unsigned long   alt = Q ? ~als : als;


  /* 1st Loop */
  
  alo = ald + alt + Q;
  C   = (((alt >> 31) & (ald >> 31))
	 | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
  Q   = C ^ SS;
  R1  = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD)));
  S   = alo >> 31;
  sfi = (sfi << (32-N+1)) | Q;
  ald = (alo << 1) | (sfi >> 31);
  if ((alo >> 31) ^ (ald >> 31))
    {
      DBZ = 1;
    }

  /* 2nd - N-1th Loop */
  
  for (i = 2; i < N; i++)
    {
      alt = Q ? ~als : als;
      alo = ald + alt + Q;
      C   = (((alt >> 31) & (ald >> 31))
	     | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
      Q   = C ^ SS;
      R1  = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD)));
      S   = alo >> 31;
      sfi = (sfi << 1) | Q;
      ald = (alo << 1) | (sfi >> 31);
      if ((alo >> 31) ^ (ald >> 31))
	{
	  DBZ = 1;
	}
    }

  /* Nth Loop */
  alt = Q ? ~als : als;
  alo = ald + alt + Q;
  C   = (((alt >> 31) & (ald >> 31))
	 | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
  Q   = C ^ SS;
  R1  = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD)));
  sfi = (sfi << (32-N+1));
  ald = alo;

  /* End */
  if (alo != 0)
    {
      alt = Q ? ~als : als;
      alo = ald + alt + Q;
    }
  R1  = R1 & ((~alo >> 31) ^ SD);
  if ((alo != 0) && ((Q ^ (SS ^ SD)) ^ R1)) alo = ald;
  if (N != 32)
    ald = sfi = (long) ((sfi >> 1) | (SS ^ SD) << 31) >> (32-N-1) | Q;
  else
    ald = sfi = sfi | Q;
  
  OV = DBZ | ((alo == 0) ? 0 : R1);
  
  * remainder_ptr = alo;

  /* Adj */
  if (((alo != 0) && ((SS ^ SD) ^ R1))
      || ((alo == 0) && (SS ^ R1)))
    alo = ald + 1;
  else
    alo = ald;
  
  OV  = (DBZ | R1) ? OV : ((alo >> 31) & (~ald >> 31));

  * quotient_ptr  = alo;
  * overflow_ptr  = OV;
}

/* sdivun imm5, reg1, reg2, reg3 */
int
OP_1C207E0 (void)
{
  uint32_t /*unsigned long int*/  quotient;
  uint32_t /*unsigned long int*/  remainder;
  unsigned long int  divide_by;
  unsigned long int  divide_this;
  int            overflow = 0;
  unsigned int       imm5;
      
  trace_input ("sdivun", OP_IMM_REG_REG_REG, 0);

  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);

  divide_by   = State.regs[ OP[0] ];
  divide_this = State.regs[ OP[1] ] << imm5;

  divun (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
  
  State.regs[ OP[1]       ] = quotient;
  State.regs[ OP[2] >> 11 ] = remainder;
  
  /* Set condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
  if (overflow)      PSW |= PSW_OV;
  if (quotient == 0) PSW |= PSW_Z;
  if (quotient & 0x80000000) PSW |= PSW_S;
  
  trace_output (OP_IMM_REG_REG_REG);

  return 4;
}

/* sdivn imm5, reg1, reg2, reg3 */
int
OP_1C007E0 (void)
{
  int32_t /*signed long int*/  quotient;
  int32_t /*signed long int*/  remainder;
  signed long int  divide_by;
  signed long int  divide_this;
  int          overflow = 0;
  unsigned int     imm5;
      
  trace_input ("sdivn", OP_IMM_REG_REG_REG, 0);

  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);

  divide_by   = (int32_t) State.regs[ OP[0] ];
  divide_this = (int32_t) (State.regs[ OP[1] ] << imm5);

  divn (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
  
  State.regs[ OP[1]       ] = quotient;
  State.regs[ OP[2] >> 11 ] = remainder;
  
  /* Set condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
  if (overflow)      PSW |= PSW_OV;
  if (quotient == 0) PSW |= PSW_Z;
  if (quotient <  0) PSW |= PSW_S;
  
  trace_output (OP_IMM_REG_REG_REG);

  return 4;
}

/* sdivhun imm5, reg1, reg2, reg3 */
int
OP_18207E0 (void)
{
  uint32_t /*unsigned long int*/  quotient;
  uint32_t /*unsigned long int*/  remainder;
  unsigned long int  divide_by;
  unsigned long int  divide_this;
  int            overflow = 0;
  unsigned int       imm5;
      
  trace_input ("sdivhun", OP_IMM_REG_REG_REG, 0);

  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);

  divide_by   = State.regs[ OP[0] ] & 0xffff;
  divide_this = State.regs[ OP[1] ] << imm5;

  divun (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
  
  State.regs[ OP[1]       ] = quotient;
  State.regs[ OP[2] >> 11 ] = remainder;
  
  /* Set condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
  if (overflow)      PSW |= PSW_OV;
  if (quotient == 0) PSW |= PSW_Z;
  if (quotient & 0x80000000) PSW |= PSW_S;
  
  trace_output (OP_IMM_REG_REG_REG);

  return 4;
}

/* sdivhn imm5, reg1, reg2, reg3 */
int
OP_18007E0 (void)
{
  int32_t /*signed long int*/  quotient;
  int32_t /*signed long int*/  remainder;
  signed long int  divide_by;
  signed long int  divide_this;
  int          overflow = 0;
  unsigned int     imm5;
      
  trace_input ("sdivhn", OP_IMM_REG_REG_REG, 0);

  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);

  divide_by   = EXTEND16 (State.regs[ OP[0] ]);
  divide_this = (int32_t) (State.regs[ OP[1] ] << imm5);

  divn (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
  
  State.regs[ OP[1]       ] = quotient;
  State.regs[ OP[2] >> 11 ] = remainder;
  
  /* Set condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
  if (overflow)      PSW |= PSW_OV;
  if (quotient == 0) PSW |= PSW_Z;
  if (quotient <  0) PSW |= PSW_S;
  
  trace_output (OP_IMM_REG_REG_REG);

  return 4;
}

/* divu  reg1, reg2, reg3 */
int
OP_2C207E0 (void)
{
  unsigned long int quotient;
  unsigned long int remainder;
  unsigned long int divide_by;
  unsigned long int divide_this;
  int           overflow = 0;
  
  trace_input ("divu", OP_REG_REG_REG, 0);
  
  /* Compute the result.  */
  
  divide_by   = State.regs[ OP[0] ];
  divide_this = State.regs[ OP[1] ];
  
  if (divide_by == 0)
    {
      PSW |= PSW_OV;
    }
  else
    {
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
  
      /* Set condition codes.  */
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
      if (overflow)      PSW |= PSW_OV;
      if (quotient == 0) PSW |= PSW_Z;
      if (quotient & 0x80000000) PSW |= PSW_S;
    }
  
  trace_output (OP_REG_REG_REG);

  return 4;
}

/* div  reg1, reg2, reg3 */
int
OP_2C007E0 (void)
{
  signed long int quotient;
  signed long int remainder;
  signed long int divide_by;
  signed long int divide_this;
  
  trace_input ("div", OP_REG_REG_REG, 0);
  
  /* Compute the result.  */
  
  divide_by   = (int32_t) State.regs[ OP[0] ];
  divide_this = State.regs[ OP[1] ];
  
  if (divide_by == 0)
    {
      PSW |= PSW_OV;
    }
  else if (divide_by == -1 && divide_this == (1L << 31))
    {
      PSW &= ~PSW_Z;
      PSW |= PSW_OV | PSW_S;
      State.regs[ OP[1] ] = (1 << 31);
      State.regs[ OP[2] >> 11 ] = 0;
    }
  else
    {
      divide_this = (int32_t) divide_this;
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
 
      /* Set condition codes.  */
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
      if (quotient == 0) PSW |= PSW_Z;
      if (quotient <  0) PSW |= PSW_S;
    }
  
  trace_output (OP_REG_REG_REG);

  return 4;
}

/* divhu  reg1, reg2, reg3 */
int
OP_28207E0 (void)
{
  unsigned long int quotient;
  unsigned long int remainder;
  unsigned long int divide_by;
  unsigned long int divide_this;
  int           overflow = 0;
  
  trace_input ("divhu", OP_REG_REG_REG, 0);
  
  /* Compute the result.  */
  
  divide_by   = State.regs[ OP[0] ] & 0xffff;
  divide_this = State.regs[ OP[1] ];
  
  if (divide_by == 0)
    {
      PSW |= PSW_OV;
    }
  else
    {
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
  
      /* Set condition codes.  */
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
      if (overflow)      PSW |= PSW_OV;
      if (quotient == 0) PSW |= PSW_Z;
      if (quotient & 0x80000000) PSW |= PSW_S;
    }
  
  trace_output (OP_REG_REG_REG);

  return 4;
}

/* divh  reg1, reg2, reg3 */
int
OP_28007E0 (void)
{
  signed long int quotient;
  signed long int remainder;
  signed long int divide_by;
  signed long int divide_this;
  int         overflow = 0;
  
  trace_input ("divh", OP_REG_REG_REG, 0);
  
  /* Compute the result.  */
  
  divide_by  = EXTEND16 (State.regs[ OP[0] ]);
  divide_this = State.regs[ OP[1] ];
  
  if (divide_by == 0)
    {
      PSW |= PSW_OV;
    }
  else if (divide_by == -1 && divide_this == (1L << 31))
    {
      PSW &= ~PSW_Z;
      PSW |= PSW_OV | PSW_S;
      State.regs[ OP[1] ] = (1 << 31);
      State.regs[ OP[2] >> 11 ] = 0;
    }
  else
    {
      divide_this = (int32_t) divide_this;
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
  
      /* Set condition codes.  */
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
      if (quotient == 0) PSW |= PSW_Z;
      if (quotient <  0) PSW |= PSW_S;
    }
  
  trace_output (OP_REG_REG_REG);

  return 4;
}

/* mulu imm9, reg2, reg3 */
int
OP_24207E0 (void)
{
  trace_input ("mulu", OP_IMM_REG_REG, 0);

  Multiply64 (0, (OP[3] & 0x1f) | ((OP[3] >> 13) & 0x1e0));

  trace_output (OP_IMM_REG_REG);

  return 4;
}

/* mul imm9, reg2, reg3 */
int
OP_24007E0 (void)
{
  trace_input ("mul", OP_IMM_REG_REG, 0);

  Multiply64 (1, SEXT9 ((OP[3] & 0x1f) | ((OP[3] >> 13) & 0x1e0)));

  trace_output (OP_IMM_REG_REG);

  return 4;
}

/* ld.hu */
int
OP_107E0 (void)
{
  int adr;

  trace_input ("ld.hu", OP_LOAD32, 2);

  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1);
  adr &= ~0x1;
      
  State.regs[ OP[1] ] = load_mem (adr, 2);
      
  trace_output (OP_LOAD32);
  
  return 4;
}


/* ld.bu */
int
OP_10780 (void)
{
  int adr;

  trace_input ("ld.bu", OP_LOAD32, 1);

  adr = (State.regs[ OP[0] ]
	 + (EXTEND16 (OP[2] & ~1) | ((OP[3] >> 5) & 1)));
      
  State.regs[ OP[1] ] = load_mem (adr, 1);
  
  trace_output (OP_LOAD32);
  
  return 4;
}

/* prepare list12, imm5, imm32 */
int
OP_1B0780 (void)
{
  int  i;
  
  trace_input ("prepare", OP_PUSHPOP1, 0);
  
  /* Store the registers with lower number registers being placed at higher addresses.  */
  for (i = 0; i < 12; i++)
    if ((OP[3] & (1 << type1_regs[ i ])))
      {
	SP -= 4;
	store_mem (SP, 4, State.regs[ 20 + i ]);
      }
  
  SP -= (OP[3] & 0x3e) << 1;

  EP = load_mem (PC + 4, 4);
  
  trace_output (OP_PUSHPOP1);

  return 8;
}

/* prepare list12, imm5, imm16-32 */
int
OP_130780 (void)
{
  int  i;
  
  trace_input ("prepare", OP_PUSHPOP1, 0);
  
  /* Store the registers with lower number registers being placed at higher addresses.  */
  for (i = 0; i < 12; i++)
    if ((OP[3] & (1 << type1_regs[ i ])))
      {
	SP -= 4;
	store_mem (SP, 4, State.regs[ 20 + i ]);
      }
  
  SP -= (OP[3] & 0x3e) << 1;

  EP = load_mem (PC + 4, 2) << 16;
  
  trace_output (OP_PUSHPOP1);

  return 6;
}

/* prepare list12, imm5, imm16 */
int
OP_B0780 (void)
{
  int  i;
  
  trace_input ("prepare", OP_PUSHPOP1, 0);
  
  /* Store the registers with lower number registers being placed at higher addresses.  */
  for (i = 0; i < 12; i++)
    if ((OP[3] & (1 << type1_regs[ i ])))
      {
	SP -= 4;
	store_mem (SP, 4, State.regs[ 20 + i ]);
      }
  
  SP -= (OP[3] & 0x3e) << 1;

  EP = EXTEND16 (load_mem (PC + 4, 2));
  
  trace_output (OP_PUSHPOP1);

  return 6;
}

/* prepare list12, imm5, sp */
int
OP_30780 (void)
{
  int  i;
  
  trace_input ("prepare", OP_PUSHPOP1, 0);
  
  /* Store the registers with lower number registers being placed at higher addresses.  */
  for (i = 0; i < 12; i++)
    if ((OP[3] & (1 << type1_regs[ i ])))
      {
	SP -= 4;
	store_mem (SP, 4, State.regs[ 20 + i ]);
      }
  
  SP -= (OP[3] & 0x3e) << 1;

  EP = SP;
  
  trace_output (OP_PUSHPOP1);

  return 4;
}

/* mul reg1, reg2, reg3 */
int
OP_22007E0 (void)
{
  trace_input ("mul", OP_REG_REG_REG, 0);

  Multiply64 (1, State.regs[ OP[0] ]);

  trace_output (OP_REG_REG_REG);

  return 4;
}

/* popmh list18 */
int
OP_307F0 (void)
{
  int i;
  
  trace_input ("popmh", OP_PUSHPOP2, 0);
  
  if (OP[3] & (1 << 19))
    {
      if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0))
	{
	  FEPSW = load_mem ( SP      & ~ 3, 4);
	  FEPC  = load_mem ((SP + 4) & ~ 3, 4);
	}
      else
	{
	  EIPSW = load_mem ( SP      & ~ 3, 4);
	  EIPC  = load_mem ((SP + 4) & ~ 3, 4);
	}
      
      SP += 8;
    }
  
  /* Load the registers with lower number registers being retrieved from higher addresses.  */
  for (i = 16; i--;)
    if ((OP[3] & (1 << type2_regs[ i ])))
      {
	State.regs[ i + 16 ] = load_mem (SP & ~ 3, 4);
	SP += 4;
      }
  
  trace_output (OP_PUSHPOP2);

  return 4;
}

/* popml lsit18 */
int
OP_107F0 (void)
{
  int i;

  trace_input ("popml", OP_PUSHPOP3, 0);

  if (OP[3] & (1 << 19))
    {
      if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0))
	{
	  FEPSW = load_mem ( SP      & ~ 3, 4);
	  FEPC =  load_mem ((SP + 4) & ~ 3, 4);
	}
      else
	{
	  EIPSW = load_mem ( SP      & ~ 3, 4);
	  EIPC  = load_mem ((SP + 4) & ~ 3, 4);
	}
      
      SP += 8;
    }
  
  if (OP[3] & (1 << 3))
    {
      PSW = load_mem (SP & ~ 3, 4);
      SP += 4;
    }
  
  /* Load the registers with lower number registers being retrieved from higher addresses.  */
  for (i = 15; i--;)
    if ((OP[3] & (1 << type3_regs[ i ])))
      {
	State.regs[ i + 1 ] = load_mem (SP & ~ 3, 4);
	SP += 4;
      }
  
  trace_output (OP_PUSHPOP2);

  return 4;
}

/* pushmh list18 */
int
OP_307E0 (void)
{
  int i;

  trace_input ("pushmh", OP_PUSHPOP2, 0);
  
  /* Store the registers with lower number registers being placed at higher addresses.  */
  for (i = 0; i < 16; i++)
    if ((OP[3] & (1 << type2_regs[ i ])))
      {
	SP -= 4;
	store_mem (SP & ~ 3, 4, State.regs[ i + 16 ]);
      }
  
  if (OP[3] & (1 << 19))
    {
      SP -= 8;
      
      if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0))
	{
	  store_mem ((SP + 4) & ~ 3, 4, FEPC);
	  store_mem ( SP      & ~ 3, 4, FEPSW);
	}
      else
	{
	  store_mem ((SP + 4) & ~ 3, 4, EIPC);
	  store_mem ( SP      & ~ 3, 4, EIPSW);
	}
    }
  
  trace_output (OP_PUSHPOP2);

  return 4;
}

/* V850E2R FPU functions */
/*
  sim_fpu_status_invalid_snan = 1,				-V--- (sim spec.)
  sim_fpu_status_invalid_qnan = 2,				----- (sim spec.)
  sim_fpu_status_invalid_isi = 4, (inf - inf)			-V---
  sim_fpu_status_invalid_idi = 8, (inf / inf)			-V---
  sim_fpu_status_invalid_zdz = 16, (0 / 0)			-V---
  sim_fpu_status_invalid_imz = 32, (inf * 0)			-V---
  sim_fpu_status_invalid_cvi = 64, convert to integer		-V---
  sim_fpu_status_invalid_div0 = 128, (X / 0)			--Z--
  sim_fpu_status_invalid_cmp = 256, compare			----- (sim spec.)
  sim_fpu_status_invalid_sqrt = 512,				-V---
  sim_fpu_status_rounded = 1024,				I----
  sim_fpu_status_inexact = 2048,				I---- (sim spec.)
  sim_fpu_status_overflow = 4096,				I--O-
  sim_fpu_status_underflow = 8192,				I---U
  sim_fpu_status_denorm = 16384,				----U (sim spec.)
*/  
    
void
update_fpsr (SIM_DESC sd, sim_fpu_status status, unsigned int mask, unsigned int double_op_p)
{
  unsigned int fpsr = FPSR & mask;

  unsigned int flags = 0;

  if (fpsr & FPSR_XEI
      && ((status & (sim_fpu_status_rounded
		     | sim_fpu_status_overflow
		     | sim_fpu_status_inexact))
	  || (status & sim_fpu_status_underflow
	      && (fpsr & (FPSR_XEU | FPSR_XEI)) == 0
	      && fpsr & FPSR_FS)))
    {
      flags |= FPSR_XCI | FPSR_XPI;
    }

  if (fpsr & FPSR_XEV
      && (status & (sim_fpu_status_invalid_isi
		    | sim_fpu_status_invalid_imz
		    | sim_fpu_status_invalid_zdz
		    | sim_fpu_status_invalid_idi
		    | sim_fpu_status_invalid_cvi
		    | sim_fpu_status_invalid_sqrt
		    | sim_fpu_status_invalid_snan)))
    {
      flags |= FPSR_XCV | FPSR_XPV;
    }

  if (fpsr & FPSR_XEZ
      && (status & sim_fpu_status_invalid_div0))
    {
      flags |= FPSR_XCV | FPSR_XPV;
    }

  if (fpsr & FPSR_XEO
      && (status & sim_fpu_status_overflow))
    {
      flags |= FPSR_XCO | FPSR_XPO;
    }
      
  if (((fpsr & FPSR_XEU) || (fpsr & FPSR_FS) == 0)
      && (status & (sim_fpu_status_underflow
		    | sim_fpu_status_denorm)))
    {
      flags |= FPSR_XCU | FPSR_XPU;
    }

  if (flags)
    {
      FPSR &= ~FPSR_XC;
      FPSR |= flags;

      SignalExceptionFPE (sd, double_op_p);
    }
}

/* Exception.  */

void
SignalException (SIM_DESC sd)
{
  if (MPM & MPM_AUE)
    {
      PSW = PSW & ~(PSW_NPV | PSW_DMP | PSW_IMP);
    }
}

void
SignalExceptionFPE (SIM_DESC sd, unsigned int double_op_p)
{								
  if (((PSW & (PSW_NP|PSW_ID)) == 0)
      || !(FPSR & (double_op_p ? FPSR_DEM : FPSR_SEM)))		
    {								
      EIPC = PC;							
      EIPSW = PSW;						
      EIIC = (FPSR & (double_op_p ? FPSR_DEM : FPSR_SEM)) 	
	? 0x71 : 0x72;						
      PSW |= (PSW_EP | PSW_ID);
      PC = 0x70;

      SignalException (sd);
    }								
}

void
check_invalid_snan (SIM_DESC sd, sim_fpu_status status, unsigned int double_op_p)
{
  if ((FPSR & FPSR_XEI)
      && (status & sim_fpu_status_invalid_snan))
    {
      FPSR &= ~FPSR_XC;
      FPSR |= FPSR_XCV;
      FPSR |= FPSR_XPV;
      SignalExceptionFPE (sd, double_op_p);
    }
}

int
v850_float_compare (SIM_DESC sd, int cmp, sim_fpu wop1, sim_fpu wop2, int double_op_p)
{
  int result = -1;
  
  if (sim_fpu_is_nan (&wop1) || sim_fpu_is_nan (&wop2))
    {
      if (cmp & 0x8)
	{
	  if (FPSR & FPSR_XEV)
	    {
	      FPSR |= FPSR_XCV | FPSR_XPV;
	      SignalExceptionFPE (sd, double_op_p);
	    }
	}

      switch (cmp)
	{
	case FPU_CMP_F:
	  result = 0;
	  break;
	case FPU_CMP_UN:
	  result = 1;
	  break;
	case FPU_CMP_EQ:
	  result = 0;
	  break;
	case FPU_CMP_UEQ:
	  result = 1;
	  break;
	case FPU_CMP_OLT:
	  result = 0;
	  break;
	case FPU_CMP_ULT:
	  result = 1;
	  break;
	case FPU_CMP_OLE:
	  result = 0;
	  break;
	case FPU_CMP_ULE:
	  result = 1;
	  break;
	case FPU_CMP_SF:
	  result = 0;
	  break;
	case FPU_CMP_NGLE:
	  result = 1;
	  break;
	case FPU_CMP_SEQ:
	  result = 0;
	  break;
	case FPU_CMP_NGL:
	  result = 1;
	  break;
	case FPU_CMP_LT:
	  result = 0;
	  break;
	case FPU_CMP_NGE:
	  result = 1;
	  break;
	case FPU_CMP_LE:
	  result = 0;
	  break;
	case FPU_CMP_NGT:
	  result = 1;
	  break;
	default:
	  abort ();
	}
    }
  else if (sim_fpu_is_infinity (&wop1) && sim_fpu_is_infinity (&wop2)
	   && sim_fpu_sign (&wop1) == sim_fpu_sign (&wop2))
    {
      switch (cmp)
	{
	case FPU_CMP_F:
	  result = 0;
	  break;
	case FPU_CMP_UN:
	  result = 0;
	  break;
	case FPU_CMP_EQ:
	  result = 1;
	  break;
	case FPU_CMP_UEQ:
	  result = 1;
	  break;
	case FPU_CMP_OLT:
	  result = 0;
	  break;
	case FPU_CMP_ULT:
	  result = 0;
	  break;
	case FPU_CMP_OLE:
	  result = 1;
	  break;
	case FPU_CMP_ULE:
	  result = 1;
	  break;
	case FPU_CMP_SF:
	  result = 0;
	  break;
	case FPU_CMP_NGLE:
	  result = 0;
	  break;
	case FPU_CMP_SEQ:
	  result = 1;
	  break;
	case FPU_CMP_NGL:
	  result = 1;
	  break;
	case FPU_CMP_LT:
	  result = 0;
	  break;
	case FPU_CMP_NGE:
	  result = 0;
	  break;
	case FPU_CMP_LE:
	  result = 1;
	  break;
	case FPU_CMP_NGT:
	  result = 1;
	  break;
	default:
	  abort ();
	}
    }
  else
    {
      int gt = 0,lt = 0,eq = 0, status;

      status = sim_fpu_cmp (&wop1, &wop2);

      switch (status)
	{
	case SIM_FPU_IS_SNAN:
	case SIM_FPU_IS_QNAN:
	  abort ();
	  break;

	case SIM_FPU_IS_NINF:
	  lt = 1;
	  break;
	case SIM_FPU_IS_PINF:
	  gt = 1;
	  break;
	case SIM_FPU_IS_NNUMBER:
	  lt = 1;
	  break;
	case SIM_FPU_IS_PNUMBER:
	  gt = 1;
	  break;
	case SIM_FPU_IS_NDENORM:
	  lt = 1;
	  break;
	case SIM_FPU_IS_PDENORM:
	  gt = 1;
	  break;
	case SIM_FPU_IS_NZERO:
	case SIM_FPU_IS_PZERO:
	  eq = 1;
	  break;
	}
  
      switch (cmp)
	{
	case FPU_CMP_F:
	  result = 0;
	  break;
	case FPU_CMP_UN:
	  result = 0;
	  break;
	case FPU_CMP_EQ:
	  result = eq;
	  break;
	case FPU_CMP_UEQ:
	  result = eq;
	  break;
	case FPU_CMP_OLT:
	  result = lt;
	  break;
	case FPU_CMP_ULT:
	  result = lt;
	  break;
	case FPU_CMP_OLE:
	  result = lt || eq;
	  break;
	case FPU_CMP_ULE:
	  result = lt || eq;
	  break;
	case FPU_CMP_SF:
	  result = 0;
	  break;
	case FPU_CMP_NGLE:
	  result = 0;
	  break;
	case FPU_CMP_SEQ:
	  result = eq;
	  break;
	case FPU_CMP_NGL:
	  result = eq;
	  break;
	case FPU_CMP_LT:
	  result = lt;
	  break;
	case FPU_CMP_NGE:
	  result = lt;
	  break;
	case FPU_CMP_LE:
	  result = lt || eq;
	  break;
	case FPU_CMP_NGT:
	  result = lt || eq;
	  break;
	}
    }

  ASSERT (result != -1);
  return result;
}

void
v850_div (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p, unsigned int *op3p)
{
  signed long int quotient;
  signed long int remainder;
  signed long int divide_by;
  signed long int divide_this;
  bfd_boolean     overflow = FALSE;
  
  /* Compute the result.  */
  divide_by   = (int32_t)op0;
  divide_this = (int32_t)op1;

  if (divide_by == 0 || (divide_by == -1 && divide_this == (1 << 31)))
    {
      overflow  = TRUE;
      divide_by = 1;
    }
  
  quotient  = divide_this / divide_by;
  remainder = divide_this % divide_by;
  
  /* Set condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
  if (overflow)      PSW |= PSW_OV;
  if (quotient == 0) PSW |= PSW_Z;
  if (quotient <  0) PSW |= PSW_S;
  
  *op2p = quotient;
  *op3p = remainder;
}

void
v850_divu (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p, unsigned int *op3p)
{
  unsigned long int quotient;
  unsigned long int remainder;
  unsigned long int divide_by;
  unsigned long int divide_this;
  bfd_boolean       overflow = FALSE;
  
  /* Compute the result.  */
  
  divide_by   = op0;
  divide_this = op1;
  
  if (divide_by == 0)
    {
      overflow = TRUE;
      divide_by  = 1;
    }
  
  quotient  = divide_this / divide_by;
  remainder = divide_this % divide_by;
  
  /* Set condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
  
  if (overflow)      PSW |= PSW_OV;
  if (quotient == 0) PSW |= PSW_Z;
  if (quotient & 0x80000000) PSW |= PSW_S;
  
  *op2p = quotient;
  *op3p = remainder;
}

void
v850_sar (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p)
{
  unsigned int result, z, s, cy;

  op0 &= 0x1f;
  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.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));

  *op2p = result;
}

void
v850_shl (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p)
{
  unsigned int result, z, s, cy;

  op0 &= 0x1f;
  result = op1 << op0;

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

  /* Store the result and condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));

  *op2p = result;
}

void
v850_rotl (SIM_DESC sd, unsigned int amount, unsigned int src, unsigned int * dest)
{
  unsigned int result, z, s, cy;

  amount &= 0x1f;
  result = src << amount;
  result |= src >> (32 - amount);

  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = ! (result & 1);

  /* Store the result and condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));

  * dest = result;
}

void
v850_bins (SIM_DESC sd, unsigned int source, unsigned int lsb, unsigned int msb,
	   unsigned int * dest)
{
  unsigned int mask;
  unsigned int result, pos, width;
  unsigned int z, s;

  pos = lsb;
  width = (msb - lsb) + 1;

  /* A width of 32 exhibits undefined behavior on the shift.  The easiest
     way to make this code safe is to just avoid that case and set the mask
     to the right value.  */
  if (width >= 32)
    mask = 0xffffffff;
  else
    mask = ~ (-(1 << width));

  source &= mask;
  mask <<= pos;
  result = (* dest) & ~ mask;
  result |= source << pos;

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

  /* Store the result and condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV );
  PSW |= (z ? PSW_Z : 0) | (s ? PSW_S : 0);
  
  * dest = result;
}

void
v850_shr (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p)
{
  unsigned int result, z, s, cy;

  op0 &=  0x1f;
  result = op1 >> op0;

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

  /* Store the result and condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
		| (cy ? PSW_CY : 0));

  *op2p = result;
}

void
v850_satadd (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p)
{
  unsigned int result, z, s, cy, ov, sat;

  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));
  sat = ov;
  
  /* Store the result and condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
	  | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
	  | (sat ? PSW_SAT : 0));
  
  /* Handle saturated results.  */
  if (sat && s)
    {
      result = 0x7fffffff;
      PSW &= ~PSW_S;
    }
  else if (sat)
    {
      result = 0x80000000;
      PSW |= PSW_S;
    }

  *op2p = result;
}

void
v850_satsub (SIM_DESC sd, unsigned int op0, unsigned int op1, unsigned int *op2p)
{
  unsigned int result, z, s, cy, ov, sat;

  /* Compute the result.  */
  result = op1 - op0;
  
  /* Compute the condition codes.  */
  z = (result == 0);
  s = (result & 0x80000000);
  cy = (op1 < op0);
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
	&& (op1 & 0x80000000) != (result & 0x80000000));
  sat = ov;
  
  /* Store the result and condition codes.  */
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
	  | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
	  | (sat ? PSW_SAT : 0));

  /* Handle saturated results.  */
  if (sat && s)
    {
      result = 0x7fffffff;
      PSW &= ~PSW_S;
    }
  else if (sat)
    {
      result = 0x80000000;
      PSW |= PSW_S;
    }

  *op2p = result;
}

uint32_t
load_data_mem (SIM_DESC  sd,
	       SIM_ADDR  addr,
	       int       len)
{
  uint32_t data;

  switch (len)
    {
    case 1:
      data = sim_core_read_unaligned_1 (STATE_CPU (sd, 0), 
					PC, read_map, addr);
      break;
    case 2:
      data = sim_core_read_unaligned_2 (STATE_CPU (sd, 0), 
					PC, read_map, addr);
      break;
    case 4:
      data = sim_core_read_unaligned_4 (STATE_CPU (sd, 0), 
					PC, read_map, addr);
      break;
    default:
      abort ();
    }
  return data;
}

void
store_data_mem (SIM_DESC    sd,
		SIM_ADDR    addr,
		int         len,
		uint32_t  data)
{
  switch (len)
    {
    case 1:
      store_mem (addr, 1, data);
      break;
    case 2:
      store_mem (addr, 2, data);
      break;
    case 4:
      store_mem (addr, 4, data);
      break;
    default:
      abort ();
    }
}

int
mpu_load_mem_test (SIM_DESC sd, unsigned int addr, int size, int base_reg)
{
  int result = 1;

  if (PSW & PSW_DMP)
    {
      if (IPE0 && addr >= IPA2ADDR (IPA0L) && addr <= IPA2ADDR (IPA0L) && IPR0)
	{
	  /* text area */
	}
      else if (IPE1 && addr >= IPA2ADDR (IPA1L) && addr <= IPA2ADDR (IPA1L) && IPR1)
	{
	  /* text area */
	}
      else if (IPE2 && addr >= IPA2ADDR (IPA2L) && addr <= IPA2ADDR (IPA2L) && IPR2)
	{
	  /* text area */
	}
      else if (IPE3 && addr >= IPA2ADDR (IPA3L) && addr <= IPA2ADDR (IPA3L) && IPR3)
	{
	  /* text area */
	}
      else if (addr >= PPA2ADDR (PPA & ~PPM) && addr <= DPA2ADDR (PPA | PPM))
	{
	  /* preifarallel area */
	}
      else if (addr >= PPA2ADDR (SPAL) && addr <= DPA2ADDR (SPAU))
	{
	  /* stack area */
	}
      else if (DPE0 && addr >= DPA2ADDR (DPA0L) && addr <= DPA2ADDR (DPA0L) && DPR0
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else if (DPE1 && addr >= DPA2ADDR (DPA1L) && addr <= DPA2ADDR (DPA1L) && DPR1
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else if (DPE2 && addr >= DPA2ADDR (DPA2L) && addr <= DPA2ADDR (DPA2L) && DPR2
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else if (DPE3 && addr >= DPA2ADDR (DPA3L) && addr <= DPA2ADDR (DPA3L) && DPR3
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else
	{
	  VMECR &= ~(VMECR_VMW | VMECR_VMX);
	  VMECR |= VMECR_VMR;
	  VMADR = addr;
	  VMTID = TID;
	  FEIC = 0x431;

	  PC = 0x30;

	  SignalException (sd);
	  result = 0;
	}
    }

  return result;
}

int
mpu_store_mem_test (SIM_DESC sd, unsigned int addr, int size, int base_reg)
{
  int result = 1;

  if (PSW & PSW_DMP)
    {
      if (addr >= PPA2ADDR (PPA & ~PPM) && addr <= DPA2ADDR (PPA | PPM))
	{
	  /* preifarallel area */
	}
      else if (addr >= PPA2ADDR (SPAL) && addr <= DPA2ADDR (SPAU))
	{
	  /* stack area */
	}
      else if (DPE0 && addr >= DPA2ADDR (DPA0L) && addr <= DPA2ADDR (DPA0L) && DPW0
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else if (DPE1 && addr >= DPA2ADDR (DPA1L) && addr <= DPA2ADDR (DPA1L) && DPW1
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else if (DPE2 && addr >= DPA2ADDR (DPA2L) && addr <= DPA2ADDR (DPA2L) && DPW2
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else if (DPE3 && addr >= DPA2ADDR (DPA3L) && addr <= DPA2ADDR (DPA3L) && DPW3
	       && ((SPAL & SPAL_SPS) ? base_reg == SP_REGNO : 1))
	{
	  /* data area */
	}
      else
	{
	  if (addr >= PPA2ADDR (PPA & ~PPM) && addr <= DPA2ADDR (PPA | PPM))
	    {
	      FEIC = 0x432;
	      VPTID = TID;
	      VPADR = PC;
#ifdef NOT_YET
	      VIP_PP;
	      VPECR;
#endif	      
	    }
	  else
	    {
	      FEIC = 0x431;
	      VMTID = TID;
	      VMADR = VMECR;
	      VMECR &= ~(VMECR_VMW | VMECR_VMX);
	      VMECR |= VMECR_VMR;
	      PC = 0x30;
	    }
	  result = 0;
	}
    }

  return result;
}