936df7568a
The common subdir sets up a cconfig.h file to hold checks for the common code. In practice, most files still end up using config.h instead which just leads to confusion. Merge all the configure checks that went into cconfig.h into SIM_AC_COMMON so we can drop the cconfig.h file altogether. Now there is only a single config.h file like normal.
240 lines
6.1 KiB
C
240 lines
6.1 KiB
C
/* New version of run front end support for simulators.
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Copyright (C) 1997-2016 Free Software Foundation, Inc.
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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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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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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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/* Need to be before general includes, to pick up e.g. _GNU_SOURCE. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <signal.h>
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/* For strsignal. */
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#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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#include "sim-main.h"
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#include "bfd.h"
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#ifdef HAVE_ENVIRON
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extern char **environ;
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#endif
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#ifdef HAVE_UNISTD_H
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/* For chdir. */
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#include <unistd.h>
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#endif
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static void usage (void);
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extern host_callback default_callback;
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static const char *myname;
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static SIM_DESC sd;
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static RETSIGTYPE
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cntrl_c (int sig)
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{
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if (! sim_stop (sd))
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{
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fprintf (stderr, "Quit!\n");
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exit (1);
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}
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}
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int
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main (int argc, char **argv)
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{
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const char *name;
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char **prog_argv = NULL;
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struct bfd *prog_bfd;
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enum sim_stop reason;
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int sigrc = 0;
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int single_step = 0;
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RETSIGTYPE (*prev_sigint) ();
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myname = lbasename (argv[0]);
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/* INTERNAL: When MYNAME is `step', single step the simulator
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instead of allowing it to run free. The sole purpose of this
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HACK is to allow the sim_resume interface's step argument to be
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tested without having to build/run gdb. */
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if (strlen (myname) > 4 && strcmp (myname - 4, "step") == 0)
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{
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single_step = 1;
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}
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/* Create an instance of the simulator. */
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default_callback.init (&default_callback);
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sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, NULL, argv);
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if (sd == 0)
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exit (1);
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if (STATE_MAGIC (sd) != SIM_MAGIC_NUMBER)
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{
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fprintf (stderr, "Internal error - bad magic number in simulator struct\n");
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abort ();
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}
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/* We can't set the endianness in the callback structure until
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sim_config is called, which happens in sim_open. */
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default_callback.target_endian
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= (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
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? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE);
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/* Was there a program to run? */
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prog_argv = STATE_PROG_ARGV (sd);
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prog_bfd = STATE_PROG_BFD (sd);
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if (prog_argv == NULL || *prog_argv == NULL)
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usage ();
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name = *prog_argv;
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/* For simulators that don't open prog during sim_open() */
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if (prog_bfd == NULL)
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{
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prog_bfd = bfd_openr (name, 0);
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if (prog_bfd == NULL)
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{
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fprintf (stderr, "%s: can't open \"%s\": %s\n",
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myname, name, bfd_errmsg (bfd_get_error ()));
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exit (1);
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}
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if (!bfd_check_format (prog_bfd, bfd_object))
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{
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fprintf (stderr, "%s: \"%s\" is not an object file: %s\n",
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myname, name, bfd_errmsg (bfd_get_error ()));
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exit (1);
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}
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}
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if (STATE_VERBOSE_P (sd))
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printf ("%s %s\n", myname, name);
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/* Load the program into the simulator. */
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if (sim_load (sd, name, prog_bfd, 0) == SIM_RC_FAIL)
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exit (1);
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/* Prepare the program for execution. */
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#ifdef HAVE_ENVIRON
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sim_create_inferior (sd, prog_bfd, prog_argv, environ);
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#else
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sim_create_inferior (sd, prog_bfd, prog_argv, NULL);
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#endif
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/* To accommodate relative file paths, chdir to sysroot now. We
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mustn't do this until BFD has opened the program, else we wouldn't
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find the executable if it has a relative file path. */
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if (simulator_sysroot[0] != '\0' && chdir (simulator_sysroot) < 0)
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{
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fprintf (stderr, "%s: can't change directory to \"%s\"\n",
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myname, simulator_sysroot);
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exit (1);
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}
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/* Run/Step the program. */
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if (single_step)
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{
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do
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{
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prev_sigint = signal (SIGINT, cntrl_c);
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sim_resume (sd, 1/*step*/, 0);
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signal (SIGINT, prev_sigint);
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sim_stop_reason (sd, &reason, &sigrc);
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if ((reason == sim_stopped) &&
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(sigrc == sim_signal_to_host (sd, SIM_SIGINT)))
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break; /* exit on control-C */
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}
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/* remain on breakpoint or signals in oe mode*/
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while (((reason == sim_signalled) &&
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(sigrc == sim_signal_to_host (sd, SIM_SIGTRAP))) ||
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((reason == sim_stopped) &&
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(STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)));
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}
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else
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{
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do
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{
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#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
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struct sigaction sa, osa;
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sa.sa_handler = cntrl_c;
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sigemptyset (&sa.sa_mask);
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sa.sa_flags = 0;
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sigaction (SIGINT, &sa, &osa);
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prev_sigint = osa.sa_handler;
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#else
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prev_sigint = signal (SIGINT, cntrl_c);
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#endif
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sim_resume (sd, 0, sigrc);
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signal (SIGINT, prev_sigint);
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sim_stop_reason (sd, &reason, &sigrc);
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if ((reason == sim_stopped) &&
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(sigrc == sim_signal_to_host (sd, SIM_SIGINT)))
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break; /* exit on control-C */
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/* remain on signals in oe mode */
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} while ((reason == sim_stopped) &&
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(STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT));
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}
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/* Print any stats the simulator collected. */
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if (STATE_VERBOSE_P (sd))
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sim_info (sd, 0);
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/* Shutdown the simulator. */
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sim_close (sd, 0);
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/* If reason is sim_exited, then sigrc holds the exit code which we want
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to return. If reason is sim_stopped or sim_signalled, then sigrc holds
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the signal that the simulator received; we want to return that to
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indicate failure. */
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/* Why did we stop? */
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switch (reason)
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{
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case sim_signalled:
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case sim_stopped:
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if (sigrc != 0)
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fprintf (stderr, "program stopped with signal %d (%s).\n", sigrc,
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strsignal (sigrc));
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break;
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case sim_exited:
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break;
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default:
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fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc);
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break;
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}
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return sigrc;
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}
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static void
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usage (void)
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{
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fprintf (stderr, "Usage: %s [options] program [program args]\n", myname);
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fprintf (stderr, "Run `%s --help' for full list of options.\n", myname);
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exit (1);
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}
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