Exemple #1
0
SF
sh64_fnegs(SIM_CPU *current_cpu, SF frgh)
{
  SF result;
  sim_fpu f, fres;

  sim_fpu_32to (&f, frgh);
  sim_fpu_neg (&fres, &f);
  sim_fpu_to32 (&result, &fres);
  return result;
}
Exemple #2
0
DF
sh64_fnegd(SIM_CPU *current_cpu, DF drgh)
{
  DF result;
  sim_fpu f1, f2;

  sim_fpu_64to (&f1, drgh);
  sim_fpu_neg (&f2, &f1);
  sim_fpu_to64 (&result, &f2);
  return result;
}
Exemple #3
0
static SF
negsf (CGEN_FPU* fpu, SF x)
{
    sim_fpu op1;
    sim_fpu ans;
    unsigned32 res;
    sim_fpu_status status;

    sim_fpu_32to (&op1, x);
    status = sim_fpu_neg (&ans, &op1);
    if (status != 0)
        (*fpu->ops->error) (fpu, status);
    sim_fpu_to32 (&res, &ans);

    return res;
}
Exemple #4
0
static DF
negdf (CGEN_FPU* fpu, DF x)
{
    sim_fpu op1;
    sim_fpu ans;
    unsigned64 res;
    sim_fpu_status status;

    sim_fpu_64to (&op1, x);
    status = sim_fpu_neg (&ans, &op1);
    if (status != 0)
        (*fpu->ops->error) (fpu, status);
    sim_fpu_to64 (&res, &ans);

    return res;
}
Exemple #5
0
/* Implement a 32/64 bit FP nmadd, setting FP exception bits when
   appropriate.  */
void
fpu_fnmadd (SIM_DESC sd, sim_cpu *cpu, sim_cia cia,
	    const void *reg_in1, const void *reg_in2, const void *reg_in3,
	    void *reg_out, const struct fp_prec_t *ops)
{
  sim_fpu m1, m2, m, mm, n, r;

  REG2VAL (reg_in1, &m1);
  REG2VAL (reg_in2, &m2);
  REG2VAL (reg_in3, &n);
  ROUND (&m1);
  ROUND (&m2);
  ROUND (&n);
  FPCR &= ~ EC_MASK;
  if (sim_fpu_is_snan (&m1) || sim_fpu_is_snan (&m2) || sim_fpu_is_snan (&n)
      || (sim_fpu_is_infinity (&m1) && sim_fpu_is_zero (&m2))
      || (sim_fpu_is_zero (&m1) && sim_fpu_is_infinity (&m2)))
    {
    invalid_operands:
      if (FPCR & EE_V)
	FPCR |= EC_V;
      else
	VAL2REG (&sim_fpu_qnan, reg_out);
    }
  else
    {
      sim_fpu_status stat = sim_fpu_mul (&m, &m1, &m2);

      if (sim_fpu_is_infinity (&m) && sim_fpu_is_infinity (&n)
	  && sim_fpu_sign (&m) == sim_fpu_sign (&n))
	goto invalid_operands;

      stat |= sim_fpu_neg (&mm, &m);
      stat |= sim_fpu_add (&r, &mm, &n);
      stat |= ROUND (&r);
      if (fpu_status_ok (stat))
	VAL2REG (&r, reg_out);
    }
  
  fpu_check_signal_exception (sd, cpu, cia);
}