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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [sim/] [m32r/] [sim-if.c] - Blame information for rev 247

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1 24 jeremybenn
/* Main simulator entry points specific to the M32R.
2
   Copyright (C) 1996, 1997, 1998, 1999, 2003, 2007, 2008
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   Free Software Foundation, Inc.
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   Contributed by Cygnus Support.
5
 
6
   This file is part of GDB, the GNU debugger.
7
 
8
   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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13
   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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18
   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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21
#include "sim-main.h"
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#include "sim-options.h"
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#include "libiberty.h"
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#include "bfd.h"
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26
#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
36
 
37
static void free_state (SIM_DESC);
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static void print_m32r_misc_cpu (SIM_CPU *cpu, int verbose);
39
 
40
/* Records simulator descriptor so utilities like m32r_dump_regs can be
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   called from gdb.  */
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SIM_DESC current_state;
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44
/* Cover function of sim_state_free to free the cpu buffers as well.  */
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static void
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free_state (SIM_DESC sd)
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{
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  if (STATE_MODULES (sd) != NULL)
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    sim_module_uninstall (sd);
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  sim_cpu_free_all (sd);
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  sim_state_free (sd);
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}
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55
/* Create an instance of the simulator.  */
56
 
57
SIM_DESC
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sim_open (kind, callback, abfd, argv)
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     SIM_OPEN_KIND kind;
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     host_callback *callback;
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     struct bfd *abfd;
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     char **argv;
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{
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  SIM_DESC sd = sim_state_alloc (kind, callback);
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  char c;
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  int i;
67
 
68
  /* The cpu data is kept in a separately allocated chunk of memory.  */
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  if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK)
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    {
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      free_state (sd);
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      return 0;
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    }
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#if 0 /* FIXME: pc is in mach-specific struct */
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  /* FIXME: watchpoints code shouldn't need this */
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  {
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    SIM_CPU *current_cpu = STATE_CPU (sd, 0);
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    STATE_WATCHPOINTS (sd)->pc = &(PC);
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    STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
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  }
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#endif
83
 
84
  if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
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    {
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      free_state (sd);
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      return 0;
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    }
89
 
90
#ifdef HAVE_DV_SOCKSER /* FIXME: was done differently before */
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  if (dv_sockser_install (sd) != SIM_RC_OK)
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    {
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      free_state (sd);
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      return 0;
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    }
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#endif
97
 
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#if 0 /* FIXME: 'twould be nice if we could do this */
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  /* These options override any module options.
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     Obviously ambiguity should be avoided, however the caller may wish to
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     augment the meaning of an option.  */
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  if (extra_options != NULL)
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    sim_add_option_table (sd, extra_options);
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#endif
105
 
106
  /* getopt will print the error message so we just have to exit if this fails.
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     FIXME: Hmmm...  in the case of gdb we need getopt to call
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     print_filtered.  */
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  if (sim_parse_args (sd, argv) != SIM_RC_OK)
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    {
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      free_state (sd);
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      return 0;
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    }
114
 
115
  /* Allocate a handler for the control registers and other devices
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     if no memory for that range has been allocated by the user.
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     All are allocated in one chunk to keep things from being
118
     unnecessarily complicated.  */
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  if (sim_core_read_buffer (sd, NULL, read_map, &c, M32R_DEVICE_ADDR, 1) == 0)
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    sim_core_attach (sd, NULL,
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122
                     access_read_write,
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124
                     M32R_DEVICE_ADDR, M32R_DEVICE_LEN /*nr_bytes*/,
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126
                     &m32r_devices,
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                     NULL /*buffer*/);
128
 
129
  /* Allocate core managed memory if none specified by user.
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     Use address 4 here in case the user wanted address 0 unmapped.  */
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  if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0)
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    sim_do_commandf (sd, "memory region 0,0x%x", M32R_DEFAULT_MEM_SIZE);
133
 
134
  /* check for/establish the reference program image */
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  if (sim_analyze_program (sd,
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                           (STATE_PROG_ARGV (sd) != NULL
137
                            ? *STATE_PROG_ARGV (sd)
138
                            : NULL),
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                           abfd) != SIM_RC_OK)
140
    {
141
      free_state (sd);
142
      return 0;
143
    }
144
 
145
  /* Establish any remaining configuration options.  */
146
  if (sim_config (sd) != SIM_RC_OK)
147
    {
148
      free_state (sd);
149
      return 0;
150
    }
151
 
152
  if (sim_post_argv_init (sd) != SIM_RC_OK)
153
    {
154
      free_state (sd);
155
      return 0;
156
    }
157
 
158
  /* Open a copy of the cpu descriptor table.  */
159
  {
160
    CGEN_CPU_DESC cd = m32r_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name,
161
                                             CGEN_ENDIAN_BIG);
162
    for (i = 0; i < MAX_NR_PROCESSORS; ++i)
163
      {
164
        SIM_CPU *cpu = STATE_CPU (sd, i);
165
        CPU_CPU_DESC (cpu) = cd;
166
        CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn;
167
      }
168
    m32r_cgen_init_dis (cd);
169
  }
170
 
171
  /* Initialize various cgen things not done by common framework.
172
     Must be done after m32r_cgen_cpu_open.  */
173
  cgen_init (sd);
174
 
175
  for (c = 0; c < MAX_NR_PROCESSORS; ++c)
176
    {
177
      /* Only needed for profiling, but the structure member is small.  */
178
      memset (CPU_M32R_MISC_PROFILE (STATE_CPU (sd, i)), 0,
179
              sizeof (* CPU_M32R_MISC_PROFILE (STATE_CPU (sd, i))));
180
      /* Hook in callback for reporting these stats */
181
      PROFILE_INFO_CPU_CALLBACK (CPU_PROFILE_DATA (STATE_CPU (sd, i)))
182
        = print_m32r_misc_cpu;
183
    }
184
 
185
  /* Store in a global so things like sparc32_dump_regs can be invoked
186
     from the gdb command line.  */
187
  current_state = sd;
188
 
189
  return sd;
190
}
191
 
192
void
193
sim_close (sd, quitting)
194
     SIM_DESC sd;
195
     int quitting;
196
{
197
  m32r_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0)));
198
  sim_module_uninstall (sd);
199
}
200
 
201
SIM_RC
202
sim_create_inferior (sd, abfd, argv, envp)
203
     SIM_DESC sd;
204
     struct bfd *abfd;
205
     char **argv;
206
     char **envp;
207
{
208
  SIM_CPU *current_cpu = STATE_CPU (sd, 0);
209
  SIM_ADDR addr;
210
 
211
  if (abfd != NULL)
212
    addr = bfd_get_start_address (abfd);
213
  else
214
    addr = 0;
215
  sim_pc_set (current_cpu, addr);
216
 
217
#ifdef M32R_LINUX
218
  m32rbf_h_cr_set (current_cpu,
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                    m32r_decode_gdb_ctrl_regnum(SPI_REGNUM), 0x1f00000);
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  m32rbf_h_cr_set (current_cpu,
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                    m32r_decode_gdb_ctrl_regnum(SPU_REGNUM), 0x1f00000);
222
#endif
223
 
224
#if 0
225
  STATE_ARGV (sd) = sim_copy_argv (argv);
226
  STATE_ENVP (sd) = sim_copy_argv (envp);
227
#endif
228
 
229
  return SIM_RC_OK;
230
}
231
 
232
/* PROFILE_CPU_CALLBACK */
233
 
234
static void
235
print_m32r_misc_cpu (SIM_CPU *cpu, int verbose)
236
{
237
  SIM_DESC sd = CPU_STATE (cpu);
238
  char buf[20];
239
 
240
  if (CPU_PROFILE_FLAGS (cpu) [PROFILE_INSN_IDX])
241
    {
242
      sim_io_printf (sd, "Miscellaneous Statistics\n\n");
243
      sim_io_printf (sd, "  %-*s %s\n\n",
244
                     PROFILE_LABEL_WIDTH, "Fill nops:",
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                     sim_add_commas (buf, sizeof (buf),
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                                     CPU_M32R_MISC_PROFILE (cpu)->fillnop_count));
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      if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_m32rx)
248
        sim_io_printf (sd, "  %-*s %s\n\n",
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                       PROFILE_LABEL_WIDTH, "Parallel insns:",
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                       sim_add_commas (buf, sizeof (buf),
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                                       CPU_M32R_MISC_PROFILE (cpu)->parallel_count));
252
      if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_m32r2)
253
        sim_io_printf (sd, "  %-*s %s\n\n",
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                       PROFILE_LABEL_WIDTH, "Parallel insns:",
255
                       sim_add_commas (buf, sizeof (buf),
256
                                       CPU_M32R_MISC_PROFILE (cpu)->parallel_count));
257
    }
258
}
259
 
260
void
261
sim_do_command (sd, cmd)
262
     SIM_DESC sd;
263
     char *cmd;
264
{
265
  char **argv;
266
 
267
  if (cmd == NULL)
268
    return;
269
 
270
  argv = buildargv (cmd);
271
 
272
  if (argv[0] != NULL
273
      && strcasecmp (argv[0], "info") == 0
274
      && argv[1] != NULL
275
      && strncasecmp (argv[1], "reg", 3) == 0)
276
    {
277
      SI val;
278
 
279
      /* We only support printing bbpsw,bbpc here as there is no equivalent
280
         functionality in gdb.  */
281
      if (argv[2] == NULL)
282
        sim_io_eprintf (sd, "Missing register in `%s'\n", cmd);
283
      else if (argv[3] != NULL)
284
        sim_io_eprintf (sd, "Too many arguments in `%s'\n", cmd);
285
      else if (strcasecmp (argv[2], "bbpsw") == 0)
286
        {
287
          val = m32rbf_h_cr_get (STATE_CPU (sd, 0), H_CR_BBPSW);
288
          sim_io_printf (sd, "bbpsw 0x%x %d\n", val, val);
289
        }
290
      else if (strcasecmp (argv[2], "bbpc") == 0)
291
        {
292
          val = m32rbf_h_cr_get (STATE_CPU (sd, 0), H_CR_BBPC);
293
          sim_io_printf (sd, "bbpc 0x%x %d\n", val, val);
294
        }
295
      else
296
        sim_io_eprintf (sd, "Printing of register `%s' not supported with `sim info'\n",
297
                        argv[2]);
298
    }
299
  else
300
    {
301
      if (sim_args_command (sd, cmd) != SIM_RC_OK)
302
        sim_io_eprintf (sd, "Unknown sim command `%s'\n", cmd);
303
    }
304
 
305
  freeargv (argv);
306
}

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