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/* FRV simulator memory option handling.
Copyright (C) 1999-2021 Free Software Foundation, Inc.
Contributed by Red Hat.
This file is part of GDB, the GNU debugger.
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/>. */
/* This must come before any other includes. */
#include "defs.h"
#define WANT_CPU frvbf
#define WANT_CPU_FRVBF
#include "sim-main.h"
#include "sim-assert.h"
#include "sim-options.h"
#include <string.h>
#include <stdlib.h>
/* FRV specific command line options. */
enum {
OPTION_FRV_DATA_CACHE = OPTION_START,
OPTION_FRV_INSN_CACHE,
OPTION_FRV_PROFILE_CACHE,
OPTION_FRV_PROFILE_PARALLEL,
OPTION_FRV_TIMER,
OPTION_FRV_MEMORY_LATENCY
};
static DECLARE_OPTION_HANDLER (frv_option_handler);
const OPTION frv_options[] =
{
{ {"profile", optional_argument, NULL, 'p'},
'p', "on|off", "Perform profiling",
frv_option_handler },
{ {"data-cache", optional_argument, NULL, OPTION_FRV_DATA_CACHE },
'\0', "WAYS[,SETS[,LINESIZE]]", "Enable data cache",
frv_option_handler },
{ {"insn-cache", optional_argument, NULL, OPTION_FRV_INSN_CACHE },
'\0', "WAYS[,SETS[,LINESIZE]]", "Enable instruction cache",
frv_option_handler },
{ {"profile-cache", optional_argument, NULL, OPTION_FRV_PROFILE_CACHE },
'\0', "on|off", "Profile caches",
frv_option_handler },
{ {"profile-parallel", optional_argument, NULL, OPTION_FRV_PROFILE_PARALLEL },
'\0', "on|off", "Profile parallelism",
frv_option_handler },
{ {"timer", required_argument, NULL, OPTION_FRV_TIMER },
'\0', "CYCLES,INTERRUPT", "Set Interrupt Timer",
frv_option_handler },
{ {"memory-latency", required_argument, NULL, OPTION_FRV_MEMORY_LATENCY },
'\0', "CYCLES", "Set Latency of memory",
frv_option_handler },
{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
};
static char *
parse_size (char *chp, address_word *nr_bytes)
{
/* <nr_bytes> */
*nr_bytes = strtoul (chp, &chp, 0);
return chp;
}
static address_word
check_pow2 (address_word value, char *argname, char *optname, SIM_DESC sd)
{
if ((value & (value - 1)) != 0)
{
sim_io_eprintf (sd, "%s argument to %s must be a power of 2\n",
argname, optname);
return 0; /* will enable default value. */
}
return value;
}
static void
parse_cache_option (SIM_DESC sd, char *arg, char *cache_name, int is_data_cache)
{
int i;
address_word ways = 0, sets = 0, linesize = 0;
if (arg != NULL)
{
char *chp = arg;
/* parse the arguments */
chp = parse_size (chp, &ways);
ways = check_pow2 (ways, "WAYS", cache_name, sd);
if (*chp == ',')
{
chp = parse_size (chp + 1, &sets);
sets = check_pow2 (sets, "SETS", cache_name, sd);
if (*chp == ',')
{
chp = parse_size (chp + 1, &linesize);
linesize = check_pow2 (linesize, "LINESIZE", cache_name, sd);
}
}
}
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
SIM_CPU *current_cpu = STATE_CPU (sd, i);
FRV_CACHE *cache = is_data_cache ? CPU_DATA_CACHE (current_cpu)
: CPU_INSN_CACHE (current_cpu);
cache->ways = ways;
cache->sets = sets;
cache->line_size = linesize;
frv_cache_init (current_cpu, cache);
}
}
static SIM_RC
frv_option_handler (SIM_DESC sd, sim_cpu *current_cpu, int opt,
char *arg, int is_command)
{
switch (opt)
{
case 'p' :
if (! WITH_PROFILE)
sim_io_eprintf (sd, "Profiling not compiled in, `-p' ignored\n");
else
{
unsigned mask = PROFILE_USEFUL_MASK;
if (WITH_PROFILE_CACHE_P)
mask |= (1 << PROFILE_CACHE_IDX);
if (WITH_PROFILE_PARALLEL_P)
mask |= (1 << PROFILE_PARALLEL_IDX);
return set_profile_option_mask (sd, "profile", mask, arg);
}
break;
case OPTION_FRV_DATA_CACHE:
parse_cache_option (sd, arg, "data_cache", 1/*is_data_cache*/);
return SIM_RC_OK;
case OPTION_FRV_INSN_CACHE:
parse_cache_option (sd, arg, "insn_cache", 0/*is_data_cache*/);
return SIM_RC_OK;
case OPTION_FRV_PROFILE_CACHE:
if (WITH_PROFILE_CACHE_P)
return sim_profile_set_option (sd, "-cache", PROFILE_CACHE_IDX, arg);
else
sim_io_eprintf (sd, "Cache profiling not compiled in, `--profile-cache' ignored\n");
break;
case OPTION_FRV_PROFILE_PARALLEL:
if (WITH_PROFILE_PARALLEL_P)
{
unsigned mask
= (1 << PROFILE_MODEL_IDX) | (1 << PROFILE_PARALLEL_IDX);
return set_profile_option_mask (sd, "-parallel", mask, arg);
}
else
sim_io_eprintf (sd, "Parallel profiling not compiled in, `--profile-parallel' ignored\n");
break;
case OPTION_FRV_TIMER:
{
char *chp = arg;
address_word cycles, interrupt;
chp = parse_size (chp, &cycles);
if (chp == arg)
{
sim_io_eprintf (sd, "Cycle count required for --timer\n");
return SIM_RC_FAIL;
}
if (*chp != ',')
{
sim_io_eprintf (sd, "Interrupt number required for --timer\n");
return SIM_RC_FAIL;
}
chp = parse_size (chp + 1, &interrupt);
if (interrupt < 1 || interrupt > 15)
{
sim_io_eprintf (sd, "Interrupt number for --timer must be greater than 0 and less that 16\n");
return SIM_RC_FAIL;
}
frv_interrupt_state.timer.enabled = 1;
frv_interrupt_state.timer.value = cycles;
frv_interrupt_state.timer.current = 0;
frv_interrupt_state.timer.interrupt =
FRV_INTERRUPT_LEVEL_1 + interrupt - 1;
}
return SIM_RC_OK;
case OPTION_FRV_MEMORY_LATENCY:
{
int i;
char *chp = arg;
address_word cycles;
chp = parse_size (chp, &cycles);
if (chp == arg)
{
sim_io_eprintf (sd, "Cycle count required for --memory-latency\n");
return SIM_RC_FAIL;
}
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
SIM_CPU *current_cpu = STATE_CPU (sd, i);
FRV_CACHE *insn_cache = CPU_INSN_CACHE (current_cpu);
FRV_CACHE *data_cache = CPU_DATA_CACHE (current_cpu);
insn_cache->memory_latency = cycles;
data_cache->memory_latency = cycles;
}
}
return SIM_RC_OK;
default:
sim_io_eprintf (sd, "Unknown FRV option %d\n", opt);
return SIM_RC_FAIL;
}
return SIM_RC_FAIL;
}
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