sim/m32r/sim-if.c

   1 /* Main simulator entry points specific to the M32R.
   2    Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #include "sim-main.h"
  20 #include "sim-options.h"
  21 #include "libiberty.h"
  22 #include "bfd.h"
  23
  24 #ifdef HAVE_STRING_H
  25 #include <string.h>
  26 #else
  27 #ifdef HAVE_STRINGS_H
  28 #include <strings.h>
  29 #endif
  30 #endif
  31 #ifdef HAVE_STDLIB_H
  32 #include <stdlib.h>
  33 #endif
  34
  35 static void free_state (SIM_DESC);
  36 static void print_m32r_misc_cpu (SIM_CPU *cpu, int verbose);
  37
  38 /* Records simulator descriptor so utilities like m32r_dump_regs can be
  39    called from gdb.  */
  40 SIM_DESC current_state;
  41 \f
  42 /* Cover function of sim_state_free to free the cpu buffers as well.  */
  43
  44 static void
  45 free_state (SIM_DESC sd)
  46 {
  47   if (STATE_MODULES (sd) != NULL)
  48     sim_module_uninstall (sd);
  49   sim_cpu_free_all (sd);
  50   sim_state_free (sd);
  51 }
  52
  53 /* Create an instance of the simulator.  */
  54
  55 SIM_DESC
  56 sim_open (kind, callback, abfd, argv)
  57      SIM_OPEN_KIND kind;
  58      host_callback *callback;
  59      struct _bfd *abfd;
  60      char **argv;
  61 {
  62   SIM_DESC sd = sim_state_alloc (kind, callback);
  63   char c;
  64
  65   /* The cpu data is kept in a separately allocated chunk of memory.  */
  66   if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK)
  67     {
  68       free_state (sd);
  69       return 0;
  70     }
  71
  72 #if 0 /* FIXME: pc is in mach-specific struct */
  73   /* FIXME: watchpoints code shouldn't need this */
  74   {
  75     SIM_CPU *current_cpu = STATE_CPU (sd, 0);
  76     STATE_WATCHPOINTS (sd)->pc = &(PC);
  77     STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
  78   }
  79 #endif
  80
  81   if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
  82     {
  83       free_state (sd);
  84       return 0;
  85     }
  86
  87 #ifdef HAVE_DV_SOCKSER /* FIXME: was done differently before */
  88   if (dv_sockser_install (sd) != SIM_RC_OK)
  89     {
  90       free_state (sd);
  91       return 0;
  92     }
  93 #endif
  94
  95 #if 0 /* FIXME: 'twould be nice if we could do this */
  96   /* These options override any module options.
  97      Obviously ambiguity should be avoided, however the caller may wish to
  98      augment the meaning of an option.  */
  99   if (extra_options != NULL)
 100     sim_add_option_table (sd, extra_options);
 101 #endif
 102
 103   /* getopt will print the error message so we just have to exit if this fails.
 104      FIXME: Hmmm...  in the case of gdb we need getopt to call
 105      print_filtered.  */
 106   if (sim_parse_args (sd, argv) != SIM_RC_OK)
 107     {
 108       free_state (sd);
 109       return 0;
 110     }
 111
 112   /* Allocate a handler for the control registers and other devices
 113      if no memory for that range has been allocated by the user.
 114      All are allocated in one chunk to keep things from being
 115      unnecessarily complicated.  */
 116   if (sim_core_read_buffer (sd, NULL, read_map, &c, M32R_DEVICE_ADDR, 1) == 0)
 117     sim_core_attach (sd, NULL,
 118                      0 /*level*/,
 119                      access_read_write,
 120                      0 /*space ???*/,
 121                      M32R_DEVICE_ADDR, M32R_DEVICE_LEN /*nr_bytes*/,
 122                      0 /*modulo*/,
 123                      &m32r_devices,
 124                      NULL /*buffer*/);
 125
 126   /* Allocate core managed memory if none specified by user.
 127      Use address 4 here in case the user wanted address 0 unmapped.  */
 128   if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0)
 129     sim_do_commandf (sd, "memory region 0,0x%x", M32R_DEFAULT_MEM_SIZE);
 130
 131   /* check for/establish the reference program image */
 132   if (sim_analyze_program (sd,
 133                            (STATE_PROG_ARGV (sd) != NULL
 134                             ? *STATE_PROG_ARGV (sd)
 135                             : NULL),
 136                            abfd) != SIM_RC_OK)
 137     {
 138       free_state (sd);
 139       return 0;
 140     }
 141
 142   /* Establish any remaining configuration options.  */
 143   if (sim_config (sd) != SIM_RC_OK)
 144     {
 145       free_state (sd);
 146       return 0;
 147     }
 148
 149   if (sim_post_argv_init (sd) != SIM_RC_OK)
 150     {
 151       free_state (sd);
 152       return 0;
 153     }
 154
 155   /* Initialize various cgen things not done by common framework.  */
 156   cgen_init (sd);
 157
 158   /* Open a copy of the opcode table.  */
 159   STATE_OPCODE_TABLE (sd) = m32r_cgen_opcode_open (STATE_ARCHITECTURE (sd)->mach,
 160                                                    CGEN_ENDIAN_BIG);
 161   m32r_cgen_init_dis (STATE_OPCODE_TABLE (sd));
 162
 163   {
 164     int c;
 165
 166     for (c = 0; c < MAX_NR_PROCESSORS; ++c)
 167       {
 168         /* Only needed for profiling, but the structure member is small.  */
 169         memset (CPU_M32R_MISC_PROFILE (STATE_CPU (sd, c)), 0,
 170                 sizeof (* CPU_M32R_MISC_PROFILE (STATE_CPU (sd, c))));
 171         /* Hook in callback for reporting these stats */
 172         PROFILE_INFO_CPU_CALLBACK (CPU_PROFILE_DATA (STATE_CPU (sd, c)))
 173           = print_m32r_misc_cpu;
 174       }
 175   }
 176
 177   /* Store in a global so things like sparc32_dump_regs can be invoked
 178      from the gdb command line.  */
 179   current_state = sd;
 180
 181   return sd;
 182 }
 183
 184 void
 185 sim_close (sd, quitting)
 186      SIM_DESC sd;
 187      int quitting;
 188 {
 189   m32r_cgen_opcode_close (STATE_OPCODE_TABLE (sd));
 190   sim_module_uninstall (sd);
 191 }
 192 \f
 193 SIM_RC
 194 sim_create_inferior (sd, abfd, argv, envp)
 195      SIM_DESC sd;
 196      struct _bfd *abfd;
 197      char **argv;
 198      char **envp;
 199 {
 200   SIM_CPU *current_cpu = STATE_CPU (sd, 0);
 201   SIM_ADDR addr;
 202
 203   if (abfd != NULL)
 204     addr = bfd_get_start_address (abfd);
 205   else
 206     addr = 0;
 207   sim_pc_set (current_cpu, addr);
 208
 209 #if 0
 210   STATE_ARGV (sd) = sim_copy_argv (argv);
 211   STATE_ENVP (sd) = sim_copy_argv (envp);
 212 #endif
 213
 214   return SIM_RC_OK;
 215 }
 216
 217 /* PROFILE_CPU_CALLBACK */
 218
 219 static void
 220 print_m32r_misc_cpu (SIM_CPU *cpu, int verbose)
 221 {
 222   SIM_DESC sd = CPU_STATE (cpu);
 223   char buf[20];
 224
 225   if (CPU_PROFILE_FLAGS (cpu) [PROFILE_INSN_IDX])
 226     {
 227       sim_io_printf (sd, "Miscellaneous Statistics\n\n");
 228       sim_io_printf (sd, "  %-*s %s\n\n",
 229                      PROFILE_LABEL_WIDTH, "Fill nops:",
 230                      sim_add_commas (buf, sizeof (buf),
 231                                      CPU_M32R_MISC_PROFILE (cpu)->fillnop_count));
 232       if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_m32rx)
 233         sim_io_printf (sd, "  %-*s %s\n\n",
 234                        PROFILE_LABEL_WIDTH, "Parallel insns:",
 235                        sim_add_commas (buf, sizeof (buf),
 236                                        CPU_M32R_MISC_PROFILE (cpu)->parallel_count));
 237     }
 238 }
 239
 240 void
 241 sim_do_command (sd, cmd)
 242      SIM_DESC sd;
 243      char *cmd;
 244 {
 245   char **argv;
 246
 247   if (cmd == NULL)
 248     return;
 249
 250   argv = buildargv (cmd);
 251
 252   if (argv[0] != NULL
 253       && strcasecmp (argv[0], "info") == 0
 254       && argv[1] != NULL
 255       && strncasecmp (argv[1], "reg", 3) == 0)
 256     {
 257       SI val;
 258
 259       /* We only support printing bbpsw,bbpc here as there is no equivalent
 260          functionality in gdb.  */
 261       if (argv[2] == NULL)
 262         sim_io_eprintf (sd, "Missing register in `%s'\n", cmd);
 263       else if (argv[3] != NULL)
 264         sim_io_eprintf (sd, "Too many arguments in `%s'\n", cmd);
 265       else if (strcasecmp (argv[2], "bbpsw") == 0)
 266         {
 267           val = a_m32r_h_cr_get (STATE_CPU (sd, 0), H_CR_BBPSW);
 268           sim_io_printf (sd, "bbpsw 0x%x %d\n", val, val);
 269         }
 270       else if (strcasecmp (argv[2], "bbpc") == 0)
 271         {
 272           val = a_m32r_h_cr_get (STATE_CPU (sd, 0), H_CR_BBPC);
 273           sim_io_printf (sd, "bbpc 0x%x %d\n", val, val);
 274         }
 275       else
 276         sim_io_eprintf (sd, "Printing of register `%s' not supported with `sim info'\n",
 277                         argv[2]);
 278     }
 279   else
 280     {
 281       if (sim_args_command (sd, cmd) != SIM_RC_OK)
 282         sim_io_eprintf (sd, "Unknown sim command `%s'\n", cmd);
 283     }
 284
 285   freeargv (argv);
 286 }