1 /* Miscellaneous simulator utilities.
2 Copyright (C) 1997 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 2, or (at your option)
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 along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "sim-assert.h"
32 #ifdef HAVE_SYS_TIME_H
33 #include <sys/time.h> /* needed by sys/resource.h */
36 #ifdef HAVE_SYS_RESOURCE_H
37 #include <sys/resource.h>
48 #include "libiberty.h"
50 #include "sim-utils.h"
52 /* Global pointer to all state data.
54 struct sim_state *current_state;
56 /* Allocate zero filled memory with xmalloc - xmalloc aborts of the
60 zalloc (unsigned long size)
62 void *memory = (void *) xmalloc (size);
63 memset (memory, 0, size);
73 /* Allocate a sim_state struct. */
76 sim_state_alloc (SIM_OPEN_KIND kind,
77 host_callback *callback)
80 SIM_DESC sd = ZALLOC (struct sim_state);
81 STATE_MAGIC (sd) = SIM_MAGIC_NUMBER;
82 STATE_CALLBACK (sd) = callback;
83 STATE_OPEN_KIND (sd) = kind;
84 for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
85 CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd;
89 /* Free a sim_state struct. */
92 sim_state_free (SIM_DESC sd)
94 ASSERT (sd->base.magic == SIM_MAGIC_NUMBER);
98 /* Turn VALUE into a string with commas. */
101 sim_add_commas (char *buf, int sizeof_buf, unsigned long value)
104 char *endbuf = buf + sizeof_buf - 1;
114 *--endbuf = (value % 10) + '0';
115 } while ((value /= 10) != 0);
120 /* Analyze a prog_name/prog_bfd and set various fields in the state
124 sim_analyze_program (sd, prog_name, prog_bfd)
130 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
132 if (prog_bfd != NULL)
134 if (prog_bfd == STATE_PROG_BFD (sd))
135 /* already analyzed */
138 /* duplicate needed, save the name of the file to be re-opened */
139 prog_name = bfd_get_filename (prog_bfd);
142 /* do we need to duplicate anything? */
143 if (prog_name == NULL)
146 /* open a new copy of the prog_bfd */
147 prog_bfd = bfd_openr (prog_name, STATE_TARGET (sd));
148 if (prog_bfd == NULL)
150 sim_io_eprintf (sd, "%s: can't open \"%s\": %s\n",
153 bfd_errmsg (bfd_get_error ()));
156 if (!bfd_check_format (prog_bfd, bfd_object))
158 sim_io_eprintf (sd, "%s: \"%s\" is not an object file: %s\n",
161 bfd_errmsg (bfd_get_error ()));
162 bfd_close (prog_bfd);
165 if (STATE_ARCHITECTURE (sd) != NULL)
166 bfd_set_arch_info (prog_bfd, STATE_ARCHITECTURE (sd));
168 /* update the sim structure */
169 if (STATE_PROG_BFD (sd) != NULL)
170 bfd_close (STATE_PROG_BFD (sd));
171 STATE_PROG_BFD (sd) = prog_bfd;
172 STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd);
174 for (s = prog_bfd->sections; s; s = s->next)
175 if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0)
177 STATE_TEXT_SECTION (sd) = s;
178 STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s);
179 STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s);
186 /* Simulator timing support. */
188 /* Called before sim_elapsed_time_since to get a reference point. */
191 sim_elapsed_time_get ()
193 #ifdef HAVE_GETRUSAGE
194 struct rusage mytime;
195 if (getrusage (RUSAGE_SELF, &mytime) == 0)
196 return 1 + (SIM_ELAPSED_TIME) (((double) mytime.ru_utime.tv_sec * 1000) + (((double) mytime.ru_utime.tv_usec + 500) / 1000));
200 return 1 + (SIM_ELAPSED_TIME) time ((time_t) 0);
207 /* Return the elapsed time in milliseconds since START.
208 The actual time may be cpu usage (prefered) or wall clock. */
211 sim_elapsed_time_since (start)
212 SIM_ELAPSED_TIME start;
214 #ifdef HAVE_GETRUSAGE
215 return sim_elapsed_time_get () - start;
218 return (sim_elapsed_time_get () - start) * 1000;