1 /* Miscellaneous simulator utilities.
2 Copyright (C) 1997-2014 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
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.
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.
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/>. */
21 #include "sim-assert.h"
31 #ifdef HAVE_SYS_TIME_H
32 #include <sys/time.h> /* needed by sys/resource.h */
35 #ifdef HAVE_SYS_RESOURCE_H
36 #include <sys/resource.h>
47 #include "libiberty.h"
49 #include "sim-utils.h"
51 /* Global pointer to all state data.
53 struct sim_state *current_state;
55 /* Allocate zero filled memory with xcalloc - xcalloc aborts if the
59 zalloc (unsigned long size)
61 return xcalloc (1, size);
64 /* Allocate a sim_state struct. */
67 sim_state_alloc (SIM_OPEN_KIND kind,
68 host_callback *callback)
70 SIM_DESC sd = ZALLOC (struct sim_state);
72 STATE_MAGIC (sd) = SIM_MAGIC_NUMBER;
73 STATE_CALLBACK (sd) = callback;
74 STATE_OPEN_KIND (sd) = kind;
80 /* Initialize the back link from the cpu struct to the state struct. */
81 /* ??? I can envision a design where the state struct contains an array
82 of pointers to cpu structs, rather than an array of structs themselves.
83 Implementing this is trickier as one may not know what to allocate until
84 one has parsed the args. Parsing the args twice wouldn't be unreasonable,
85 IMHO. If the state struct ever does contain an array of pointers then we
87 ??? See also sim_post_argv_init*/
88 for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
90 CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd;
91 CPU_INDEX (STATE_CPU (sd, cpu_nr)) = cpu_nr;
103 /* Free a sim_state struct. */
106 sim_state_free (SIM_DESC sd)
108 ASSERT (sd->base.magic == SIM_MAGIC_NUMBER);
110 #ifdef SIM_STATE_FREE
117 /* Return a pointer to the cpu data for CPU_NAME, or NULL if not found. */
120 sim_cpu_lookup (SIM_DESC sd, const char *cpu_name)
124 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
125 if (strcmp (cpu_name, CPU_NAME (STATE_CPU (sd, i))) == 0)
126 return STATE_CPU (sd, i);
130 /* Return the prefix to use for a CPU specific message (typically an
134 sim_cpu_msg_prefix (sim_cpu *cpu)
136 #if MAX_NR_PROCESSORS == 1
144 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
146 int len = strlen (CPU_NAME (STATE_CPU (sd, i)));
150 prefix = (char *) xmalloc (maxlen + 5);
152 sprintf (prefix, "%s: ", CPU_NAME (cpu));
157 /* Cover fn to sim_io_eprintf. */
160 sim_io_eprintf_cpu (sim_cpu *cpu, const char *fmt, ...)
162 SIM_DESC sd = CPU_STATE (cpu);
166 sim_io_eprintf (sd, "%s", sim_cpu_msg_prefix (cpu));
167 sim_io_evprintf (sd, fmt, ap);
171 /* Turn VALUE into a string with commas. */
174 sim_add_commas (char *buf, int sizeof_buf, unsigned long value)
177 char *endbuf = buf + sizeof_buf - 1;
187 *--endbuf = (value % 10) + '0';
188 } while ((value /= 10) != 0);
193 /* Analyze PROG_NAME/PROG_BFD and set these fields in the state struct:
194 STATE_ARCHITECTURE, if not set already and can be determined from the bfd
201 PROG_NAME is the file name of the executable or NULL.
202 PROG_BFD is its bfd or NULL.
204 If both PROG_NAME and PROG_BFD are NULL, this function returns immediately.
205 If PROG_BFD is not NULL, PROG_NAME is ignored.
207 Implicit inputs: STATE_MY_NAME(sd), STATE_TARGET(sd),
208 STATE_ARCHITECTURE(sd).
210 A new bfd is created so the app isn't required to keep its copy of the
214 sim_analyze_program (SIM_DESC sd, const char *prog_name, bfd *prog_bfd)
217 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
219 if (prog_bfd != NULL)
221 if (prog_bfd == STATE_PROG_BFD (sd))
222 /* already analyzed */
225 /* duplicate needed, save the name of the file to be re-opened */
226 prog_name = bfd_get_filename (prog_bfd);
229 /* do we need to duplicate anything? */
230 if (prog_name == NULL)
233 /* open a new copy of the prog_bfd */
234 prog_bfd = bfd_openr (prog_name, STATE_TARGET (sd));
235 if (prog_bfd == NULL)
237 sim_io_eprintf (sd, "%s: can't open \"%s\": %s\n",
240 bfd_errmsg (bfd_get_error ()));
243 if (!bfd_check_format (prog_bfd, bfd_object))
245 sim_io_eprintf (sd, "%s: \"%s\" is not an object file: %s\n",
248 bfd_errmsg (bfd_get_error ()));
249 bfd_close (prog_bfd);
252 if (STATE_ARCHITECTURE (sd) != NULL)
253 bfd_set_arch_info (prog_bfd, STATE_ARCHITECTURE (sd));
256 if (bfd_get_arch (prog_bfd) != bfd_arch_unknown
257 && bfd_get_arch (prog_bfd) != bfd_arch_obscure)
259 STATE_ARCHITECTURE (sd) = bfd_get_arch_info (prog_bfd);
263 /* update the sim structure */
264 if (STATE_PROG_BFD (sd) != NULL)
265 bfd_close (STATE_PROG_BFD (sd));
266 STATE_PROG_BFD (sd) = prog_bfd;
267 STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd);
269 for (s = prog_bfd->sections; s; s = s->next)
270 if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0)
272 STATE_TEXT_SECTION (sd) = s;
273 STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s);
274 STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s);
278 bfd_cache_close (prog_bfd);
283 /* Simulator timing support. */
285 /* Called before sim_elapsed_time_since to get a reference point. */
288 sim_elapsed_time_get (void)
290 #ifdef HAVE_GETRUSAGE
291 struct rusage mytime;
292 if (getrusage (RUSAGE_SELF, &mytime) == 0)
293 return 1 + (SIM_ELAPSED_TIME) (((double) mytime.ru_utime.tv_sec * 1000) + (((double) mytime.ru_utime.tv_usec + 500) / 1000));
297 return 1 + (SIM_ELAPSED_TIME) time ((time_t) 0);
304 /* Return the elapsed time in milliseconds since START.
305 The actual time may be cpu usage (preferred) or wall clock. */
308 sim_elapsed_time_since (SIM_ELAPSED_TIME start)
310 #ifdef HAVE_GETRUSAGE
311 return sim_elapsed_time_get () - start;
314 return (sim_elapsed_time_get () - start) * 1000;
323 /* do_command but with printf style formatting of the arguments */
325 sim_do_commandf (SIM_DESC sd,
332 if (vasprintf (&buf, fmt, ap) < 0)
334 sim_io_eprintf (sd, "%s: asprintf failed for `%s'\n",
335 STATE_MY_NAME (sd), fmt);
338 sim_do_command (sd, buf);
344 /* sim-basics.h defines a number of enumerations, convert each of them
345 to a string representation */
347 map_to_str (unsigned map)
351 case read_map: return "read";
352 case write_map: return "write";
353 case exec_map: return "exec";
354 case io_map: return "io";
358 sprintf (str, "(%ld)", (long) map);
365 access_to_str (unsigned access)
369 case access_invalid: return "invalid";
370 case access_read: return "read";
371 case access_write: return "write";
372 case access_exec: return "exec";
373 case access_io: return "io";
374 case access_read_write: return "read_write";
375 case access_read_exec: return "read_exec";
376 case access_write_exec: return "write_exec";
377 case access_read_write_exec: return "read_write_exec";
378 case access_read_io: return "read_io";
379 case access_write_io: return "write_io";
380 case access_read_write_io: return "read_write_io";
381 case access_exec_io: return "exec_io";
382 case access_read_exec_io: return "read_exec_io";
383 case access_write_exec_io: return "write_exec_io";
384 case access_read_write_exec_io: return "read_write_exec_io";
388 sprintf (str, "(%ld)", (long) access);
395 transfer_to_str (unsigned transfer)
399 case read_transfer: return "read";
400 case write_transfer: return "write";
401 default: return "(error)";