1 /* New version of run front end support for simulators.
2 Copyright (C) 1997-2016 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Need to be before general includes, to pick up e.g. _GNU_SOURCE. */
38 extern char **environ;
46 static void usage (void);
48 extern host_callback default_callback;
50 static const char *myname;
59 fprintf (stderr, "Quit!\n");
65 main (int argc, char **argv)
68 char **prog_argv = NULL;
73 RETSIGTYPE (*prev_sigint) ();
75 myname = lbasename (argv[0]);
77 /* INTERNAL: When MYNAME is `step', single step the simulator
78 instead of allowing it to run free. The sole purpose of this
79 HACK is to allow the sim_resume interface's step argument to be
80 tested without having to build/run gdb. */
81 if (strlen (myname) > 4 && strcmp (myname - 4, "step") == 0)
86 /* Create an instance of the simulator. */
87 default_callback.init (&default_callback);
88 sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, NULL, argv);
91 if (STATE_MAGIC (sd) != SIM_MAGIC_NUMBER)
93 fprintf (stderr, "Internal error - bad magic number in simulator struct\n");
97 /* We can't set the endianness in the callback structure until
98 sim_config is called, which happens in sim_open. */
99 default_callback.target_endian
100 = (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
101 ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE);
103 /* Was there a program to run? */
104 prog_argv = STATE_PROG_ARGV (sd);
105 prog_bfd = STATE_PROG_BFD (sd);
106 if (prog_argv == NULL || *prog_argv == NULL)
111 /* For simulators that don't open prog during sim_open() */
112 if (prog_bfd == NULL)
114 prog_bfd = bfd_openr (name, 0);
115 if (prog_bfd == NULL)
117 fprintf (stderr, "%s: can't open \"%s\": %s\n",
118 myname, name, bfd_errmsg (bfd_get_error ()));
121 if (!bfd_check_format (prog_bfd, bfd_object))
123 fprintf (stderr, "%s: \"%s\" is not an object file: %s\n",
124 myname, name, bfd_errmsg (bfd_get_error ()));
129 if (STATE_VERBOSE_P (sd))
130 printf ("%s %s\n", myname, name);
132 /* Load the program into the simulator. */
133 if (sim_load (sd, name, prog_bfd, 0) == SIM_RC_FAIL)
136 /* Prepare the program for execution. */
138 sim_create_inferior (sd, prog_bfd, prog_argv, environ);
140 sim_create_inferior (sd, prog_bfd, prog_argv, NULL);
143 /* To accommodate relative file paths, chdir to sysroot now. We
144 mustn't do this until BFD has opened the program, else we wouldn't
145 find the executable if it has a relative file path. */
146 if (simulator_sysroot[0] != '\0' && chdir (simulator_sysroot) < 0)
148 fprintf (stderr, "%s: can't change directory to \"%s\"\n",
149 myname, simulator_sysroot);
153 /* Run/Step the program. */
158 prev_sigint = signal (SIGINT, cntrl_c);
159 sim_resume (sd, 1/*step*/, 0);
160 signal (SIGINT, prev_sigint);
161 sim_stop_reason (sd, &reason, &sigrc);
163 if ((reason == sim_stopped) &&
164 (sigrc == sim_signal_to_host (sd, SIM_SIGINT)))
165 break; /* exit on control-C */
167 /* remain on breakpoint or signals in oe mode*/
168 while (((reason == sim_signalled) &&
169 (sigrc == sim_signal_to_host (sd, SIM_SIGTRAP))) ||
170 ((reason == sim_stopped) &&
171 (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)));
177 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
178 struct sigaction sa, osa;
179 sa.sa_handler = cntrl_c;
180 sigemptyset (&sa.sa_mask);
182 sigaction (SIGINT, &sa, &osa);
183 prev_sigint = osa.sa_handler;
185 prev_sigint = signal (SIGINT, cntrl_c);
187 sim_resume (sd, 0, sigrc);
188 signal (SIGINT, prev_sigint);
189 sim_stop_reason (sd, &reason, &sigrc);
191 if ((reason == sim_stopped) &&
192 (sigrc == sim_signal_to_host (sd, SIM_SIGINT)))
193 break; /* exit on control-C */
195 /* remain on signals in oe mode */
196 } while ((reason == sim_stopped) &&
197 (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT));
200 /* Print any stats the simulator collected. */
201 if (STATE_VERBOSE_P (sd))
204 /* Shutdown the simulator. */
207 /* If reason is sim_exited, then sigrc holds the exit code which we want
208 to return. If reason is sim_stopped or sim_signalled, then sigrc holds
209 the signal that the simulator received; we want to return that to
212 /* Why did we stop? */
218 fprintf (stderr, "program stopped with signal %d (%s).\n", sigrc,
226 fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc);
237 fprintf (stderr, "Usage: %s [options] program [program args]\n", myname);
238 fprintf (stderr, "Run `%s --help' for full list of options.\n", myname);