sim/frv/options.c

   1 /* FRV simulator memory option handling.
   2    Copyright (C) 1999-2020 Free Software Foundation, Inc.
   3    Contributed by Red Hat.
   4
   5 This file is part of GDB, the GNU debugger.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #define WANT_CPU frvbf
  21 #define WANT_CPU_FRVBF
  22
  23 #include "sim-main.h"
  24 #include "sim-assert.h"
  25 #include "sim-options.h"
  26
  27 #ifdef HAVE_STRING_H
  28 #include <string.h>
  29 #else
  30 #ifdef HAVE_STRINGS_H
  31 #include <strings.h>
  32 #endif
  33 #endif
  34 #ifdef HAVE_STDLIB_H
  35 #include <stdlib.h>
  36 #endif
  37
  38 /* FRV specific command line options. */
  39
  40 enum {
  41   OPTION_FRV_DATA_CACHE = OPTION_START,
  42   OPTION_FRV_INSN_CACHE,
  43   OPTION_FRV_PROFILE_CACHE,
  44   OPTION_FRV_PROFILE_PARALLEL,
  45   OPTION_FRV_TIMER,
  46   OPTION_FRV_MEMORY_LATENCY
  47 };
  48
  49 static DECLARE_OPTION_HANDLER (frv_option_handler);
  50
  51 const OPTION frv_options[] =
  52 {
  53   { {"profile", optional_argument, NULL, 'p'},
  54       'p', "on|off", "Perform profiling",
  55       frv_option_handler },
  56   { {"data-cache", optional_argument, NULL, OPTION_FRV_DATA_CACHE },
  57       '\0', "WAYS[,SETS[,LINESIZE]]", "Enable data cache",
  58       frv_option_handler },
  59   { {"insn-cache", optional_argument, NULL, OPTION_FRV_INSN_CACHE },
  60       '\0', "WAYS[,SETS[,LINESIZE]]", "Enable instruction cache",
  61       frv_option_handler },
  62   { {"profile-cache", optional_argument, NULL, OPTION_FRV_PROFILE_CACHE },
  63       '\0', "on|off", "Profile caches",
  64       frv_option_handler },
  65   { {"profile-parallel", optional_argument, NULL, OPTION_FRV_PROFILE_PARALLEL },
  66       '\0', "on|off", "Profile parallelism",
  67       frv_option_handler },
  68   { {"timer", required_argument, NULL, OPTION_FRV_TIMER },
  69       '\0', "CYCLES,INTERRUPT", "Set Interrupt Timer",
  70       frv_option_handler },
  71   { {"memory-latency", required_argument, NULL, OPTION_FRV_MEMORY_LATENCY },
  72       '\0', "CYCLES", "Set Latency of memory",
  73       frv_option_handler },
  74   { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
  75 };
  76
  77 static char *
  78 parse_size (char *chp, address_word *nr_bytes)
  79 {
  80   /* <nr_bytes> */
  81   *nr_bytes = strtoul (chp, &chp, 0);
  82   return chp;
  83 }
  84
  85 static address_word
  86 check_pow2 (address_word value, char *argname, char *optname, SIM_DESC sd)
  87 {
  88   if ((value & (value - 1)) != 0)
  89     {
  90       sim_io_eprintf (sd, "%s argument to %s must be a power of 2\n",
  91                       argname, optname);
  92       return 0; /* will enable default value.  */
  93     }
  94
  95   return value;
  96 }
  97
  98 static void
  99 parse_cache_option (SIM_DESC sd, char *arg, char *cache_name, int is_data_cache)
 100 {
 101   int i;
 102   address_word ways = 0, sets = 0, linesize = 0;
 103   if (arg != NULL)
 104     {
 105       char *chp = arg;
 106       /* parse the arguments */
 107       chp = parse_size (chp, &ways);
 108       ways = check_pow2 (ways, "WAYS", cache_name, sd);
 109       if (*chp == ',')
 110         {
 111           chp = parse_size (chp + 1, &sets);
 112           sets = check_pow2 (sets, "SETS", cache_name, sd);
 113           if (*chp == ',')
 114             {
 115               chp = parse_size (chp + 1, &linesize);
 116               linesize = check_pow2 (linesize, "LINESIZE", cache_name, sd);
 117             }
 118         }
 119     }
 120   for (i = 0; i < MAX_NR_PROCESSORS; ++i)
 121     {
 122       SIM_CPU *current_cpu = STATE_CPU (sd, i);
 123       FRV_CACHE *cache = is_data_cache ? CPU_DATA_CACHE (current_cpu)
 124                                        : CPU_INSN_CACHE (current_cpu);
 125       cache->ways = ways;
 126       cache->sets = sets;
 127       cache->line_size = linesize;
 128       frv_cache_init (current_cpu, cache);
 129     }
 130 }
 131
 132 static SIM_RC
 133 frv_option_handler (SIM_DESC sd, sim_cpu *current_cpu, int opt,
 134                     char *arg, int is_command)
 135 {
 136   switch (opt)
 137     {
 138     case 'p' :
 139       if (! WITH_PROFILE)
 140         sim_io_eprintf (sd, "Profiling not compiled in, `-p' ignored\n");
 141       else
 142         {
 143           unsigned mask = PROFILE_USEFUL_MASK;
 144           if (WITH_PROFILE_CACHE_P)
 145             mask |= (1 << PROFILE_CACHE_IDX);
 146           if (WITH_PROFILE_PARALLEL_P)
 147             mask |= (1 << PROFILE_PARALLEL_IDX);
 148           return set_profile_option_mask (sd, "profile", mask, arg);
 149         }
 150       break;
 151
 152     case OPTION_FRV_DATA_CACHE:
 153       parse_cache_option (sd, arg, "data_cache", 1/*is_data_cache*/);
 154       return SIM_RC_OK;
 155
 156     case OPTION_FRV_INSN_CACHE:
 157       parse_cache_option (sd, arg, "insn_cache", 0/*is_data_cache*/);
 158       return SIM_RC_OK;
 159
 160     case OPTION_FRV_PROFILE_CACHE:
 161       if (WITH_PROFILE_CACHE_P)
 162         return sim_profile_set_option (sd, "-cache", PROFILE_CACHE_IDX, arg);
 163       else
 164         sim_io_eprintf (sd, "Cache profiling not compiled in, `--profile-cache' ignored\n");
 165       break;
 166
 167     case OPTION_FRV_PROFILE_PARALLEL:
 168       if (WITH_PROFILE_PARALLEL_P)
 169         {
 170           unsigned mask
 171             = (1 << PROFILE_MODEL_IDX) | (1 << PROFILE_PARALLEL_IDX);
 172           return set_profile_option_mask (sd, "-parallel", mask, arg);
 173         }
 174       else
 175         sim_io_eprintf (sd, "Parallel profiling not compiled in, `--profile-parallel' ignored\n");
 176       break;
 177
 178     case OPTION_FRV_TIMER:
 179       {
 180         char *chp = arg;
 181         address_word cycles, interrupt;
 182         chp = parse_size (chp, &cycles);
 183         if (chp == arg)
 184           {
 185             sim_io_eprintf (sd, "Cycle count required for --timer\n");
 186             return SIM_RC_FAIL;
 187           }
 188         if (*chp != ',')
 189           {
 190             sim_io_eprintf (sd, "Interrupt number required for --timer\n");
 191             return SIM_RC_FAIL;
 192           }
 193         chp = parse_size (chp + 1, &interrupt);
 194         if (interrupt < 1 || interrupt > 15)
 195           {
 196             sim_io_eprintf (sd, "Interrupt number for --timer must be greater than 0 and less that 16\n");
 197             return SIM_RC_FAIL;
 198           }
 199         frv_interrupt_state.timer.enabled = 1;
 200         frv_interrupt_state.timer.value = cycles;
 201         frv_interrupt_state.timer.current = 0;
 202         frv_interrupt_state.timer.interrupt =
 203           FRV_INTERRUPT_LEVEL_1 + interrupt - 1;
 204       }
 205       return SIM_RC_OK;
 206
 207     case OPTION_FRV_MEMORY_LATENCY:
 208       {
 209         int i;
 210         char *chp = arg;
 211         address_word cycles;
 212         chp = parse_size (chp, &cycles);
 213         if (chp == arg)
 214           {
 215             sim_io_eprintf (sd, "Cycle count required for --memory-latency\n");
 216             return SIM_RC_FAIL;
 217           }
 218         for (i = 0; i < MAX_NR_PROCESSORS; ++i)
 219           {
 220             SIM_CPU *current_cpu = STATE_CPU (sd, i);
 221             FRV_CACHE *insn_cache = CPU_INSN_CACHE (current_cpu);
 222             FRV_CACHE *data_cache = CPU_DATA_CACHE (current_cpu);
 223             insn_cache->memory_latency = cycles;
 224             data_cache->memory_latency = cycles;
 225           }
 226       }
 227       return SIM_RC_OK;
 228
 229     default:
 230       sim_io_eprintf (sd, "Unknown FRV option %d\n", opt);
 231       return SIM_RC_FAIL;
 232
 233     }
 234
 235   return SIM_RC_FAIL;
 236 }