1055 lines
30 KiB
C
1055 lines
30 KiB
C
/* frv memory model.
|
|
Copyright (C) 1999-2016 Free Software Foundation, Inc.
|
|
Contributed by Red Hat
|
|
|
|
This file is part of the GNU simulators.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#define WANT_CPU frvbf
|
|
#define WANT_CPU_FRVBF
|
|
|
|
#include "sim-main.h"
|
|
#include "cgen-mem.h"
|
|
#include "bfd.h"
|
|
|
|
/* Check for alignment and access restrictions. Return the corrected address.
|
|
*/
|
|
static SI
|
|
fr400_check_data_read_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
/* Check access restrictions for double word loads only. */
|
|
if (align_mask == 7)
|
|
{
|
|
if ((USI)address >= 0xfe800000 && (USI)address <= 0xfeffffff)
|
|
frv_queue_data_access_error_interrupt (current_cpu, address);
|
|
}
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr500_check_data_read_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if (address & align_mask)
|
|
{
|
|
frv_queue_mem_address_not_aligned_interrupt (current_cpu, address);
|
|
address &= ~align_mask;
|
|
}
|
|
|
|
if ((USI)address >= 0xfeff0600 && (USI)address <= 0xfeff7fff
|
|
|| (USI)address >= 0xfe800000 && (USI)address <= 0xfefeffff)
|
|
frv_queue_data_access_error_interrupt (current_cpu, address);
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr550_check_data_read_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if ((USI)address >= 0xfe800000 && (USI)address <= 0xfefeffff
|
|
|| (align_mask > 0x3
|
|
&& ((USI)address >= 0xfeff0000 && (USI)address <= 0xfeffffff)))
|
|
frv_queue_data_access_error_interrupt (current_cpu, address);
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
check_data_read_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
SIM_DESC sd = CPU_STATE (current_cpu);
|
|
switch (STATE_ARCHITECTURE (sd)->mach)
|
|
{
|
|
case bfd_mach_fr400:
|
|
case bfd_mach_fr450:
|
|
address = fr400_check_data_read_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
case bfd_mach_frvtomcat:
|
|
case bfd_mach_fr500:
|
|
case bfd_mach_frv:
|
|
address = fr500_check_data_read_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
case bfd_mach_fr550:
|
|
address = fr550_check_data_read_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr400_check_readwrite_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if (address & align_mask)
|
|
{
|
|
/* Make sure that this exception is not masked. */
|
|
USI isr = GET_ISR ();
|
|
if (! GET_ISR_EMAM (isr))
|
|
{
|
|
/* Bad alignment causes a data_access_error on fr400. */
|
|
frv_queue_data_access_error_interrupt (current_cpu, address);
|
|
}
|
|
address &= ~align_mask;
|
|
}
|
|
/* Nothing to check. */
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr500_check_readwrite_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if ((USI)address >= 0xfe000000 && (USI)address <= 0xfe003fff
|
|
|| (USI)address >= 0xfe004000 && (USI)address <= 0xfe3fffff
|
|
|| (USI)address >= 0xfe400000 && (USI)address <= 0xfe403fff
|
|
|| (USI)address >= 0xfe404000 && (USI)address <= 0xfe7fffff)
|
|
frv_queue_data_access_exception_interrupt (current_cpu);
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr550_check_readwrite_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
/* No alignment restrictions on fr550 */
|
|
|
|
if ((USI)address >= 0xfe000000 && (USI)address <= 0xfe3fffff
|
|
|| (USI)address >= 0xfe408000 && (USI)address <= 0xfe7fffff)
|
|
frv_queue_data_access_exception_interrupt (current_cpu);
|
|
else
|
|
{
|
|
USI hsr0 = GET_HSR0 ();
|
|
if (! GET_HSR0_RME (hsr0)
|
|
&& (USI)address >= 0xfe400000 && (USI)address <= 0xfe407fff)
|
|
frv_queue_data_access_exception_interrupt (current_cpu);
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
check_readwrite_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
SIM_DESC sd = CPU_STATE (current_cpu);
|
|
switch (STATE_ARCHITECTURE (sd)->mach)
|
|
{
|
|
case bfd_mach_fr400:
|
|
case bfd_mach_fr450:
|
|
address = fr400_check_readwrite_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
case bfd_mach_frvtomcat:
|
|
case bfd_mach_fr500:
|
|
case bfd_mach_frv:
|
|
address = fr500_check_readwrite_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
case bfd_mach_fr550:
|
|
address = fr550_check_readwrite_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
static PCADDR
|
|
fr400_check_insn_read_address (SIM_CPU *current_cpu, PCADDR address,
|
|
int align_mask)
|
|
{
|
|
if (address & align_mask)
|
|
{
|
|
frv_queue_instruction_access_error_interrupt (current_cpu);
|
|
address &= ~align_mask;
|
|
}
|
|
else if ((USI)address >= 0xfe800000 && (USI)address <= 0xfeffffff)
|
|
frv_queue_instruction_access_error_interrupt (current_cpu);
|
|
|
|
return address;
|
|
}
|
|
|
|
static PCADDR
|
|
fr500_check_insn_read_address (SIM_CPU *current_cpu, PCADDR address,
|
|
int align_mask)
|
|
{
|
|
if (address & align_mask)
|
|
{
|
|
frv_queue_mem_address_not_aligned_interrupt (current_cpu, address);
|
|
address &= ~align_mask;
|
|
}
|
|
|
|
if ((USI)address >= 0xfeff0600 && (USI)address <= 0xfeff7fff
|
|
|| (USI)address >= 0xfe800000 && (USI)address <= 0xfefeffff)
|
|
frv_queue_instruction_access_error_interrupt (current_cpu);
|
|
else if ((USI)address >= 0xfe004000 && (USI)address <= 0xfe3fffff
|
|
|| (USI)address >= 0xfe400000 && (USI)address <= 0xfe403fff
|
|
|| (USI)address >= 0xfe404000 && (USI)address <= 0xfe7fffff)
|
|
frv_queue_instruction_access_exception_interrupt (current_cpu);
|
|
else
|
|
{
|
|
USI hsr0 = GET_HSR0 ();
|
|
if (! GET_HSR0_RME (hsr0)
|
|
&& (USI)address >= 0xfe000000 && (USI)address <= 0xfe003fff)
|
|
frv_queue_instruction_access_exception_interrupt (current_cpu);
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
static PCADDR
|
|
fr550_check_insn_read_address (SIM_CPU *current_cpu, PCADDR address,
|
|
int align_mask)
|
|
{
|
|
address &= ~align_mask;
|
|
|
|
if ((USI)address >= 0xfe800000 && (USI)address <= 0xfeffffff)
|
|
frv_queue_instruction_access_error_interrupt (current_cpu);
|
|
else if ((USI)address >= 0xfe008000 && (USI)address <= 0xfe7fffff)
|
|
frv_queue_instruction_access_exception_interrupt (current_cpu);
|
|
else
|
|
{
|
|
USI hsr0 = GET_HSR0 ();
|
|
if (! GET_HSR0_RME (hsr0)
|
|
&& (USI)address >= 0xfe000000 && (USI)address <= 0xfe007fff)
|
|
frv_queue_instruction_access_exception_interrupt (current_cpu);
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
static PCADDR
|
|
check_insn_read_address (SIM_CPU *current_cpu, PCADDR address, int align_mask)
|
|
{
|
|
SIM_DESC sd = CPU_STATE (current_cpu);
|
|
switch (STATE_ARCHITECTURE (sd)->mach)
|
|
{
|
|
case bfd_mach_fr400:
|
|
case bfd_mach_fr450:
|
|
address = fr400_check_insn_read_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
case bfd_mach_frvtomcat:
|
|
case bfd_mach_fr500:
|
|
case bfd_mach_frv:
|
|
address = fr500_check_insn_read_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
case bfd_mach_fr550:
|
|
address = fr550_check_insn_read_address (current_cpu, address,
|
|
align_mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
/* Memory reads. */
|
|
QI
|
|
frvbf_read_mem_QI (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) = 1;
|
|
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, QI, 1);
|
|
}
|
|
|
|
return GETMEMQI (current_cpu, pc, address);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* Read a HI which spans two cache lines */
|
|
static HI
|
|
read_mem_unaligned_HI (SIM_CPU *current_cpu, IADDR pc, SI address)
|
|
{
|
|
HI value = frvbf_read_mem_QI (current_cpu, pc, address);
|
|
value <<= 8;
|
|
value |= frvbf_read_mem_UQI (current_cpu, pc, address + 1);
|
|
return T2H_2 (value);
|
|
}
|
|
|
|
HI
|
|
frvbf_read_mem_HI (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) = 1;
|
|
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, HI, 2);
|
|
}
|
|
|
|
return GETMEMHI (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);
|
|
}
|
|
|
|
/* Read a SI which spans two cache lines */
|
|
static SI
|
|
read_mem_unaligned_SI (SIM_CPU *current_cpu, IADDR pc, SI address)
|
|
{
|
|
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
|
|
unsigned hi_len = cache->line_size - (address & (cache->line_size - 1));
|
|
char valarray[4];
|
|
SI SIvalue;
|
|
HI HIvalue;
|
|
|
|
switch (hi_len)
|
|
{
|
|
case 1:
|
|
valarray[0] = frvbf_read_mem_QI (current_cpu, pc, address);
|
|
SIvalue = frvbf_read_mem_SI (current_cpu, pc, address + 1);
|
|
SIvalue = H2T_4 (SIvalue);
|
|
memcpy (valarray + 1, (char*)&SIvalue, 3);
|
|
break;
|
|
case 2:
|
|
HIvalue = frvbf_read_mem_HI (current_cpu, pc, address);
|
|
HIvalue = H2T_2 (HIvalue);
|
|
memcpy (valarray, (char*)&HIvalue, 2);
|
|
HIvalue = frvbf_read_mem_HI (current_cpu, pc, address + 2);
|
|
HIvalue = H2T_2 (HIvalue);
|
|
memcpy (valarray + 2, (char*)&HIvalue, 2);
|
|
break;
|
|
case 3:
|
|
SIvalue = frvbf_read_mem_SI (current_cpu, pc, address - 1);
|
|
SIvalue = H2T_4 (SIvalue);
|
|
memcpy (valarray, (char*)&SIvalue, 3);
|
|
valarray[3] = frvbf_read_mem_QI (current_cpu, pc, address + 3);
|
|
break;
|
|
default:
|
|
abort (); /* can't happen */
|
|
}
|
|
return T2H_4 (*(SI*)valarray);
|
|
}
|
|
|
|
SI
|
|
frvbf_read_mem_SI (SIM_CPU *current_cpu, IADDR pc, SI address)
|
|
{
|
|
FRV_CACHE *cache;
|
|
USI hsr0;
|
|
|
|
/* Check for access exceptions. */
|
|
address = check_data_read_address (current_cpu, address, 3);
|
|
address = check_readwrite_address (current_cpu, address, 3);
|
|
|
|
hsr0 = GET_HSR0 ();
|
|
cache = CPU_DATA_CACHE (current_cpu);
|
|
/* 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) = 4;
|
|
return 0x37111319; /* 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, 4))
|
|
return read_mem_unaligned_SI (current_cpu, pc, address);
|
|
}
|
|
cycles = frv_cache_read (cache, 0, address);
|
|
if (cycles != 0)
|
|
return CACHE_RETURN_DATA (cache, 0, address, SI, 4);
|
|
}
|
|
|
|
return GETMEMSI (current_cpu, pc, address);
|
|
}
|
|
|
|
SI
|
|
frvbf_read_mem_WI (SIM_CPU *current_cpu, IADDR pc, SI address)
|
|
{
|
|
return frvbf_read_mem_SI (current_cpu, pc, address);
|
|
}
|
|
|
|
/* Read a SI which spans two cache lines */
|
|
static DI
|
|
read_mem_unaligned_DI (SIM_CPU *current_cpu, IADDR pc, SI address)
|
|
{
|
|
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
|
|
unsigned hi_len = cache->line_size - (address & (cache->line_size - 1));
|
|
DI value, value1;
|
|
|
|
switch (hi_len)
|
|
{
|
|
case 1:
|
|
value = frvbf_read_mem_QI (current_cpu, pc, address);
|
|
value <<= 56;
|
|
value1 = frvbf_read_mem_DI (current_cpu, pc, address + 1);
|
|
value1 = H2T_8 (value1);
|
|
value |= value1 & ((DI)0x00ffffff << 32);
|
|
value |= value1 & 0xffffffffu;
|
|
break;
|
|
case 2:
|
|
value = frvbf_read_mem_HI (current_cpu, pc, address);
|
|
value = H2T_2 (value);
|
|
value <<= 48;
|
|
value1 = frvbf_read_mem_DI (current_cpu, pc, address + 2);
|
|
value1 = H2T_8 (value1);
|
|
value |= value1 & ((DI)0x0000ffff << 32);
|
|
value |= value1 & 0xffffffffu;
|
|
break;
|
|
case 3:
|
|
value = frvbf_read_mem_SI (current_cpu, pc, address - 1);
|
|
value = H2T_4 (value);
|
|
value <<= 40;
|
|
value1 = frvbf_read_mem_DI (current_cpu, pc, address + 3);
|
|
value1 = H2T_8 (value1);
|
|
value |= value1 & ((DI)0x000000ff << 32);
|
|
value |= value1 & 0xffffffffu;
|
|
break;
|
|
case 4:
|
|
value = frvbf_read_mem_SI (current_cpu, pc, address);
|
|
value = H2T_4 (value);
|
|
value <<= 32;
|
|
value1 = frvbf_read_mem_SI (current_cpu, pc, address + 4);
|
|
value1 = H2T_4 (value1);
|
|
value |= value1 & 0xffffffffu;
|
|
break;
|
|
case 5:
|
|
value = frvbf_read_mem_DI (current_cpu, pc, address - 3);
|
|
value = H2T_8 (value);
|
|
value <<= 24;
|
|
value1 = frvbf_read_mem_SI (current_cpu, pc, address + 5);
|
|
value1 = H2T_4 (value1);
|
|
value |= value1 & 0x00ffffff;
|
|
break;
|
|
case 6:
|
|
value = frvbf_read_mem_DI (current_cpu, pc, address - 2);
|
|
value = H2T_8 (value);
|
|
value <<= 16;
|
|
value1 = frvbf_read_mem_HI (current_cpu, pc, address + 6);
|
|
value1 = H2T_2 (value1);
|
|
value |= value1 & 0x0000ffff;
|
|
break;
|
|
case 7:
|
|
value = frvbf_read_mem_DI (current_cpu, pc, address - 1);
|
|
value = H2T_8 (value);
|
|
value <<= 8;
|
|
value1 = frvbf_read_mem_QI (current_cpu, pc, address + 7);
|
|
value |= value1 & 0x000000ff;
|
|
break;
|
|
default:
|
|
abort (); /* can't happen */
|
|
}
|
|
return T2H_8 (value);
|
|
}
|
|
|
|
DI
|
|
frvbf_read_mem_DI (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, 7);
|
|
address = check_readwrite_address (current_cpu, address, 7);
|
|
|
|
/* 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) = 8;
|
|
return 0x37111319; /* 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, 8))
|
|
return read_mem_unaligned_DI (current_cpu, pc, address);
|
|
}
|
|
cycles = frv_cache_read (cache, 0, address);
|
|
if (cycles != 0)
|
|
return CACHE_RETURN_DATA (cache, 0, address, DI, 8);
|
|
}
|
|
|
|
return GETMEMDI (current_cpu, pc, address);
|
|
}
|
|
|
|
DF
|
|
frvbf_read_mem_DF (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, 7);
|
|
address = check_readwrite_address (current_cpu, address, 7);
|
|
|
|
/* 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) = 8;
|
|
return 0x37111319; /* 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, 8))
|
|
return read_mem_unaligned_DI (current_cpu, pc, address);
|
|
}
|
|
cycles = frv_cache_read (cache, 0, address);
|
|
if (cycles != 0)
|
|
return CACHE_RETURN_DATA (cache, 0, address, DF, 8);
|
|
}
|
|
|
|
return GETMEMDF (current_cpu, pc, address);
|
|
}
|
|
|
|
USI
|
|
frvbf_read_imem_USI (SIM_CPU *current_cpu, PCADDR vpc)
|
|
{
|
|
USI hsr0;
|
|
vpc = check_insn_read_address (current_cpu, vpc, 3);
|
|
|
|
hsr0 = GET_HSR0 ();
|
|
if (GET_HSR0_ICE (hsr0))
|
|
{
|
|
FRV_CACHE *cache;
|
|
USI value;
|
|
|
|
/* We don't want this to show up in the cache statistics. That read
|
|
is done in frvbf_simulate_insn_prefetch. So read the cache or memory
|
|
passively here. */
|
|
cache = CPU_INSN_CACHE (current_cpu);
|
|
if (frv_cache_read_passive_SI (cache, vpc, &value))
|
|
return value;
|
|
}
|
|
return sim_core_read_unaligned_4 (current_cpu, vpc, read_map, vpc);
|
|
}
|
|
|
|
static SI
|
|
fr400_check_write_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if (align_mask == 7
|
|
&& address >= 0xfe800000 && address <= 0xfeffffff)
|
|
frv_queue_program_interrupt (current_cpu, FRV_DATA_STORE_ERROR);
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr500_check_write_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if (address & align_mask)
|
|
{
|
|
struct frv_interrupt_queue_element *item =
|
|
frv_queue_mem_address_not_aligned_interrupt (current_cpu, address);
|
|
/* Record the correct vliw slot with the interrupt. */
|
|
if (item != NULL)
|
|
item->slot = frv_interrupt_state.slot;
|
|
address &= ~align_mask;
|
|
}
|
|
if (address >= 0xfeff0600 && address <= 0xfeff7fff
|
|
|| address >= 0xfe800000 && address <= 0xfefeffff)
|
|
frv_queue_program_interrupt (current_cpu, FRV_DATA_STORE_ERROR);
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
fr550_check_write_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
if ((USI)address >= 0xfe800000 && (USI)address <= 0xfefeffff
|
|
|| (align_mask > 0x3
|
|
&& ((USI)address >= 0xfeff0000 && (USI)address <= 0xfeffffff)))
|
|
frv_queue_program_interrupt (current_cpu, FRV_DATA_STORE_ERROR);
|
|
|
|
return address;
|
|
}
|
|
|
|
static SI
|
|
check_write_address (SIM_CPU *current_cpu, SI address, int align_mask)
|
|
{
|
|
SIM_DESC sd = CPU_STATE (current_cpu);
|
|
switch (STATE_ARCHITECTURE (sd)->mach)
|
|
{
|
|
case bfd_mach_fr400:
|
|
case bfd_mach_fr450:
|
|
address = fr400_check_write_address (current_cpu, address, align_mask);
|
|
break;
|
|
case bfd_mach_frvtomcat:
|
|
case bfd_mach_fr500:
|
|
case bfd_mach_frv:
|
|
address = fr500_check_write_address (current_cpu, address, align_mask);
|
|
break;
|
|
case bfd_mach_fr550:
|
|
address = fr550_check_write_address (current_cpu, address, align_mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return address;
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_QI (SIM_CPU *current_cpu, IADDR pc, SI address, QI value)
|
|
{
|
|
USI hsr0;
|
|
hsr0 = GET_HSR0 ();
|
|
if (GET_HSR0_DCE (hsr0))
|
|
sim_queue_fn_mem_qi_write (current_cpu, frvbf_mem_set_QI, address, value);
|
|
else
|
|
sim_queue_mem_qi_write (current_cpu, address, value);
|
|
frv_set_write_queue_slot (current_cpu);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_UQI (SIM_CPU *current_cpu, IADDR pc, SI address, UQI value)
|
|
{
|
|
frvbf_write_mem_QI (current_cpu, pc, address, value);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_HI (SIM_CPU *current_cpu, IADDR pc, SI address, HI value)
|
|
{
|
|
USI hsr0;
|
|
hsr0 = GET_HSR0 ();
|
|
if (GET_HSR0_DCE (hsr0))
|
|
sim_queue_fn_mem_hi_write (current_cpu, frvbf_mem_set_HI, address, value);
|
|
else
|
|
sim_queue_mem_hi_write (current_cpu, address, value);
|
|
frv_set_write_queue_slot (current_cpu);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_UHI (SIM_CPU *current_cpu, IADDR pc, SI address, UHI value)
|
|
{
|
|
frvbf_write_mem_HI (current_cpu, pc, address, value);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_SI (SIM_CPU *current_cpu, IADDR pc, SI address, SI value)
|
|
{
|
|
USI hsr0;
|
|
hsr0 = GET_HSR0 ();
|
|
if (GET_HSR0_DCE (hsr0))
|
|
sim_queue_fn_mem_si_write (current_cpu, frvbf_mem_set_SI, address, value);
|
|
else
|
|
sim_queue_mem_si_write (current_cpu, address, value);
|
|
frv_set_write_queue_slot (current_cpu);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_WI (SIM_CPU *current_cpu, IADDR pc, SI address, SI value)
|
|
{
|
|
frvbf_write_mem_SI (current_cpu, pc, address, value);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_DI (SIM_CPU *current_cpu, IADDR pc, SI address, DI value)
|
|
{
|
|
USI hsr0;
|
|
hsr0 = GET_HSR0 ();
|
|
if (GET_HSR0_DCE (hsr0))
|
|
sim_queue_fn_mem_di_write (current_cpu, frvbf_mem_set_DI, address, value);
|
|
else
|
|
sim_queue_mem_di_write (current_cpu, address, value);
|
|
frv_set_write_queue_slot (current_cpu);
|
|
}
|
|
|
|
void
|
|
frvbf_write_mem_DF (SIM_CPU *current_cpu, IADDR pc, SI address, DF value)
|
|
{
|
|
USI hsr0;
|
|
hsr0 = GET_HSR0 ();
|
|
if (GET_HSR0_DCE (hsr0))
|
|
sim_queue_fn_mem_df_write (current_cpu, frvbf_mem_set_DF, address, value);
|
|
else
|
|
sim_queue_mem_df_write (current_cpu, address, value);
|
|
frv_set_write_queue_slot (current_cpu);
|
|
}
|
|
|
|
/* Memory writes. These do the actual writing through the cache. */
|
|
void
|
|
frvbf_mem_set_QI (SIM_CPU *current_cpu, IADDR pc, SI address, QI value)
|
|
{
|
|
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
|
|
|
|
/* Check for access errors. */
|
|
address = check_write_address (current_cpu, address, 0);
|
|
address = check_readwrite_address (current_cpu, address, 0);
|
|
|
|
/* If we need to count cycles, then submit the write request to the cache
|
|
and let it prioritize the request. Otherwise perform the write now. */
|
|
if (model_insn)
|
|
{
|
|
int slot = UNIT_I0;
|
|
frv_cache_request_store (cache, address, slot, (char *)&value,
|
|
sizeof (value));
|
|
}
|
|
else
|
|
frv_cache_write (cache, address, (char *)&value, sizeof (value));
|
|
}
|
|
|
|
/* Write a HI which spans two cache lines */
|
|
static void
|
|
mem_set_unaligned_HI (SIM_CPU *current_cpu, IADDR pc, SI address, HI value)
|
|
{
|
|
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
|
|
/* value is already in target byte order */
|
|
frv_cache_write (cache, address, (char *)&value, 1);
|
|
frv_cache_write (cache, address + 1, ((char *)&value + 1), 1);
|
|
}
|
|
|
|
void
|
|
frvbf_mem_set_HI (SIM_CPU *current_cpu, IADDR pc, SI address, HI value)
|
|
{
|
|
FRV_CACHE *cache;
|
|
|
|
/* Check for access errors. */
|
|
address = check_write_address (current_cpu, address, 1);
|
|
address = check_readwrite_address (current_cpu, address, 1);
|
|
|
|
/* If we need to count cycles, then submit the write request to the cache
|
|
and let it prioritize the request. Otherwise perform the write now. */
|
|
value = H2T_2 (value);
|
|
cache = CPU_DATA_CACHE (current_cpu);
|
|
if (model_insn)
|
|
{
|
|
int slot = UNIT_I0;
|
|
frv_cache_request_store (cache, address, slot,
|
|
(char *)&value, sizeof (value));
|
|
}
|
|
else
|
|
{
|
|
/* 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))
|
|
{
|
|
mem_set_unaligned_HI (current_cpu, pc, address, value);
|
|
return;
|
|
}
|
|
}
|
|
frv_cache_write (cache, address, (char *)&value, sizeof (value));
|
|
}
|
|
}
|
|
|
|
/* Write a SI which spans two cache lines */
|
|
static void
|
|
mem_set_unaligned_SI (SIM_CPU *current_cpu, IADDR pc, SI address, SI value)
|
|
{
|
|
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
|
|
unsigned hi_len = cache->line_size - (address & (cache->line_size - 1));
|
|
/* value is already in target byte order */
|
|
frv_cache_write (cache, address, (char *)&value, hi_len);
|
|
frv_cache_write (cache, address + hi_len, (char *)&value + hi_len, 4 - hi_len);
|
|
}
|
|
|
|
void
|
|
frvbf_mem_set_SI (SIM_CPU *current_cpu, IADDR pc, SI address, SI value)
|
|
{
|
|
FRV_CACHE *cache;
|
|
|
|
/* Check for access errors. */
|
|
address = check_write_address (current_cpu, address, 3);
|
|
address = check_readwrite_address (current_cpu, address, 3);
|
|
|
|
/* If we need to count cycles, then submit the write request to the cache
|
|
and let it prioritize the request. Otherwise perform the write now. */
|
|
cache = CPU_DATA_CACHE (current_cpu);
|
|
value = H2T_4 (value);
|
|
if (model_insn)
|
|
{
|
|
int slot = UNIT_I0;
|
|
frv_cache_request_store (cache, address, slot,
|
|
(char *)&value, sizeof (value));
|
|
}
|
|
else
|
|
{
|
|
/* 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, 4))
|
|
{
|
|
mem_set_unaligned_SI (current_cpu, pc, address, value);
|
|
return;
|
|
}
|
|
}
|
|
frv_cache_write (cache, address, (char *)&value, sizeof (value));
|
|
}
|
|
}
|
|
|
|
/* Write a DI which spans two cache lines */
|
|
static void
|
|
mem_set_unaligned_DI (SIM_CPU *current_cpu, IADDR pc, SI address, DI value)
|
|
{
|
|
FRV_CACHE *cache = CPU_DATA_CACHE (current_cpu);
|
|
unsigned hi_len = cache->line_size - (address & (cache->line_size - 1));
|
|
/* value is already in target byte order */
|
|
frv_cache_write (cache, address, (char *)&value, hi_len);
|
|
frv_cache_write (cache, address + hi_len, (char *)&value + hi_len, 8 - hi_len);
|
|
}
|
|
|
|
void
|
|
frvbf_mem_set_DI (SIM_CPU *current_cpu, IADDR pc, SI address, DI value)
|
|
{
|
|
FRV_CACHE *cache;
|
|
|
|
/* Check for access errors. */
|
|
address = check_write_address (current_cpu, address, 7);
|
|
address = check_readwrite_address (current_cpu, address, 7);
|
|
|
|
/* If we need to count cycles, then submit the write request to the cache
|
|
and let it prioritize the request. Otherwise perform the write now. */
|
|
value = H2T_8 (value);
|
|
cache = CPU_DATA_CACHE (current_cpu);
|
|
if (model_insn)
|
|
{
|
|
int slot = UNIT_I0;
|
|
frv_cache_request_store (cache, address, slot,
|
|
(char *)&value, sizeof (value));
|
|
}
|
|
else
|
|
{
|
|
/* 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, 8))
|
|
{
|
|
mem_set_unaligned_DI (current_cpu, pc, address, value);
|
|
return;
|
|
}
|
|
}
|
|
frv_cache_write (cache, address, (char *)&value, sizeof (value));
|
|
}
|
|
}
|
|
|
|
void
|
|
frvbf_mem_set_DF (SIM_CPU *current_cpu, IADDR pc, SI address, DF value)
|
|
{
|
|
FRV_CACHE *cache;
|
|
|
|
/* Check for access errors. */
|
|
address = check_write_address (current_cpu, address, 7);
|
|
address = check_readwrite_address (current_cpu, address, 7);
|
|
|
|
/* If we need to count cycles, then submit the write request to the cache
|
|
and let it prioritize the request. Otherwise perform the write now. */
|
|
value = H2T_8 (value);
|
|
cache = CPU_DATA_CACHE (current_cpu);
|
|
if (model_insn)
|
|
{
|
|
int slot = UNIT_I0;
|
|
frv_cache_request_store (cache, address, slot,
|
|
(char *)&value, sizeof (value));
|
|
}
|
|
else
|
|
{
|
|
/* 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, 8))
|
|
{
|
|
mem_set_unaligned_DI (current_cpu, pc, address, value);
|
|
return;
|
|
}
|
|
}
|
|
frv_cache_write (cache, address, (char *)&value, sizeof (value));
|
|
}
|
|
}
|
|
|
|
void
|
|
frvbf_mem_set_XI (SIM_CPU *current_cpu, IADDR pc, SI address, SI *value)
|
|
{
|
|
int i;
|
|
FRV_CACHE *cache;
|
|
|
|
/* Check for access errors. */
|
|
address = check_write_address (current_cpu, address, 0xf);
|
|
address = check_readwrite_address (current_cpu, address, 0xf);
|
|
|
|
/* TODO -- reverse word order as well? */
|
|
for (i = 0; i < 4; ++i)
|
|
value[i] = H2T_4 (value[i]);
|
|
|
|
/* If we need to count cycles, then submit the write request to the cache
|
|
and let it prioritize the request. Otherwise perform the write now. */
|
|
cache = CPU_DATA_CACHE (current_cpu);
|
|
if (model_insn)
|
|
{
|
|
int slot = UNIT_I0;
|
|
frv_cache_request_store (cache, address, slot, (char*)value, 16);
|
|
}
|
|
else
|
|
frv_cache_write (cache, address, (char*)value, 16);
|
|
}
|
|
|
|
/* Record the current VLIW slot on the element at the top of the write queue.
|
|
*/
|
|
void
|
|
frv_set_write_queue_slot (SIM_CPU *current_cpu)
|
|
{
|
|
FRV_VLIW *vliw = CPU_VLIW (current_cpu);
|
|
int slot = vliw->next_slot - 1;
|
|
CGEN_WRITE_QUEUE *q = CPU_WRITE_QUEUE (current_cpu);
|
|
int ix = CGEN_WRITE_QUEUE_INDEX (q) - 1;
|
|
CGEN_WRITE_QUEUE_ELEMENT *item = CGEN_WRITE_QUEUE_ELEMENT (q, ix);
|
|
CGEN_WRITE_QUEUE_ELEMENT_PIPE (item) = (*vliw->current_vliw)[slot];
|
|
}
|