UQI
frvbf_read_mem_UQI (SIM_CPU *current_cpu, IADDR pc, SI address)
{
USI hsr0 = GET_HSR0 ();
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
/* Check for access exceptions. */
address = check_data_read_address (current_cpu, address, 0);
address = check_readwrite_address (current_cpu, address, 0);
/* If we need to count cycles, then the cache operation will be
initiated from the model profiling functions.
See frvbf_model_.... */
if (model_insn)
{
CPU_LOAD_ADDRESS (current_cpu) = address;
CPU_LOAD_LENGTH (current_cpu) = 1;
CPU_LOAD_SIGNED (current_cpu) = 0;
return 0xb7; /* any random value */
}
if (GET_HSR0_DCE (hsr0))
{
int cycles;
cycles = frv_cache_read (cache, 0, address);
if (cycles != 0)
return CACHE_RETURN_DATA (cache, 0, address, UQI, 1);
}
return GETMEMUQI (current_cpu, pc, address);
}
UHI
frvbf_read_mem_UHI (SIM_CPU *current_cpu, IADDR pc, SI address)
{
USI hsr0;
FRV_CACHE *cache;
/* Check for access exceptions. */
address = check_data_read_address (current_cpu, address, 1);
address = check_readwrite_address (current_cpu, address, 1);
/* If we need to count cycles, then the cache operation will be
initiated from the model profiling functions.
See frvbf_model_.... */
hsr0 = GET_HSR0 ();
cache = CPU_DATA_CACHE (current_cpu);
if (model_insn)
{
CPU_LOAD_ADDRESS (current_cpu) = address;
CPU_LOAD_LENGTH (current_cpu) = 2;
CPU_LOAD_SIGNED (current_cpu) = 0;
return 0xb711; /* any random value */
}
if (GET_HSR0_DCE (hsr0))
{
int cycles;
/* Handle access which crosses cache line boundary */
SIM_DESC sd = CPU_STATE (current_cpu);
if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr550)
{
if (DATA_CROSSES_CACHE_LINE (cache, address, 2))
return read_mem_unaligned_HI (current_cpu, pc, address);
}
cycles = frv_cache_read (cache, 0, address);
if (cycles != 0)
return CACHE_RETURN_DATA (cache, 0, address, UHI, 2);
}
return GETMEMUHI (current_cpu, pc, address);
}
void
frvbf_check_recovering_store (
SIM_CPU *current_cpu, PCADDR address, SI regno, int size, int is_float
)
{
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
int reg_ix;
CPU_RSTR_INVALIDATE(current_cpu) = 0;
for (reg_ix = next_valid_nesr (current_cpu, NO_NESR);
reg_ix != NO_NESR;
reg_ix = next_valid_nesr (current_cpu, reg_ix))
{
if (address == GET_H_SPR (H_SPR_NEEAR0 + reg_ix))
{
SI nesr = GET_NESR (reg_ix);
int nesr_drn = GET_NESR_DRN (nesr);
BI nesr_fr = GET_NESR_FR (nesr);
SI remain;
/* Invalidate cache block containing this address.
If we need to count cycles, then the cache operation will be
initiated from the model profiling functions.
See frvbf_model_.... */
if (model_insn)
{
CPU_RSTR_INVALIDATE(current_cpu) = 1;
CPU_LOAD_ADDRESS (current_cpu) = address;
}
else
frv_cache_invalidate (cache, address, 1/* flush */);
/* Copy the stored value to the register indicated by NESR.DRN. */
for (remain = size; remain > 0; remain -= 4)
{
SI value;
if (is_float)
value = GET_H_FR (regno);
else
value = GET_H_GR (regno);
switch (size)
{
case 1:
value &= 0xff;
break;
case 2:
value &= 0xffff;
break;
default:
break;
}
if (nesr_fr)
sim_queue_fn_sf_write (current_cpu, frvbf_h_fr_set, nesr_drn,
value);
else
sim_queue_fn_si_write (current_cpu, frvbf_h_gr_set, nesr_drn,
value);
nesr_drn++;
regno++;
}
break; /* Only consider the first matching register. */
}
} /* loop over active neear registers. */
}
