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Diffstat (limited to 'sim/common/nrun.c')
| -rw-r--r-- | sim/common/nrun.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/sim/common/nrun.c b/sim/common/nrun.c new file mode 100644 index 00000000000..42be33ef655 --- /dev/null +++ b/sim/common/nrun.c @@ -0,0 +1,214 @@ +/* New version of run front end support for simulators. + Copyright (C) 1997 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include <signal.h> +#include "sim-main.h" + +#include "bfd.h" + +#ifdef HAVE_ENVIRON +extern char **environ; +#endif + +static void usage (void); + +extern host_callback default_callback; + +static char *myname; + +static SIM_DESC sd; + +static RETSIGTYPE +cntrl_c (int sig) +{ + if (! sim_stop (sd)) + { + fprintf (stderr, "Quit!\n"); + exit (1); + } +} + +int +main (int argc, char **argv) +{ + char *name; + char **prog_argv = NULL; + struct _bfd *prog_bfd; + enum sim_stop reason; + int sigrc = 0; + int single_step = 0; + RETSIGTYPE (*prev_sigint) (); + + myname = argv[0] + strlen (argv[0]); + while (myname > argv[0] && myname[-1] != '/') + --myname; + + /* INTERNAL: When MYNAME is `step', single step the simulator + instead of allowing it to run free. The sole purpose of this + HACK is to allow the sim_resume interface's step argument to be + tested without having to build/run gdb. */ + if (strlen (myname) > 4 && strcmp (myname - 4, "step") == 0) + { + single_step = 1; + } + + /* Create an instance of the simulator. */ + default_callback.init (&default_callback); + sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, NULL, argv); + if (sd == 0) + exit (1); + if (STATE_MAGIC (sd) != SIM_MAGIC_NUMBER) + { + fprintf (stderr, "Internal error - bad magic number in simulator struct\n"); + abort (); + } + + /* Was there a program to run? */ + prog_argv = STATE_PROG_ARGV (sd); + prog_bfd = STATE_PROG_BFD (sd); + if (prog_argv == NULL || *prog_argv == NULL) + usage (); + + name = *prog_argv; + + /* For simulators that don't open prog during sim_open() */ + if (prog_bfd == NULL) + { + prog_bfd = bfd_openr (name, 0); + if (prog_bfd == NULL) + { + fprintf (stderr, "%s: can't open \"%s\": %s\n", + myname, name, bfd_errmsg (bfd_get_error ())); + exit (1); + } + if (!bfd_check_format (prog_bfd, bfd_object)) + { + fprintf (stderr, "%s: \"%s\" is not an object file: %s\n", + myname, name, bfd_errmsg (bfd_get_error ())); + exit (1); + } + } + + if (STATE_VERBOSE_P (sd)) + printf ("%s %s\n", myname, name); + + /* Load the program into the simulator. */ + if (sim_load (sd, name, prog_bfd, 0) == SIM_RC_FAIL) + exit (1); + + /* Prepare the program for execution. */ +#ifdef HAVE_ENVIRON + sim_create_inferior (sd, prog_bfd, prog_argv, environ); +#else + sim_create_inferior (sd, prog_bfd, prog_argv, NULL); +#endif + + /* Run/Step the program. */ + if (single_step) + { + do + { + prev_sigint = signal (SIGINT, cntrl_c); + sim_resume (sd, 1/*step*/, 0); + signal (SIGINT, prev_sigint); + sim_stop_reason (sd, &reason, &sigrc); + + if ((reason == sim_stopped) && + (sigrc == sim_signal_to_host (sd, SIM_SIGINT))) + break; /* exit on control-C */ + } + /* remain on breakpoint or signals in oe mode*/ + while (((reason == sim_signalled) && + (sigrc == sim_signal_to_host (sd, SIM_SIGTRAP))) || + ((reason == sim_stopped) && + (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT))); + } + else do + { +#if defined (HAVE_SIGACTION) && defined (SA_RESTART) + struct sigaction sa, osa; + sa.sa_handler = cntrl_c; + sigemptyset (&sa.sa_mask); + sa.sa_flags = 0; + sigaction (SIGINT, &sa, &osa); + prev_sigint = osa.sa_handler; +#else + prev_sigint = signal (SIGINT, cntrl_c); +#endif + sim_resume (sd, 0, sigrc); + signal (SIGINT, prev_sigint); + sim_stop_reason (sd, &reason, &sigrc); + + if ((reason == sim_stopped) && + (sigrc == sim_signal_to_host (sd, SIM_SIGINT))) + break; /* exit on control-C */ + + /* remain on signals in oe mode */ + } while ((reason == sim_stopped) && + (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)); + + /* Print any stats the simulator collected. */ + sim_info (sd, 0); + + /* Shutdown the simulator. */ + sim_close (sd, 0); + + /* If reason is sim_exited, then sigrc holds the exit code which we want + to return. If reason is sim_stopped or sim_signalled, then sigrc holds + the signal that the simulator received; we want to return that to + indicate failure. */ + +#ifdef SIM_H8300 /* FIXME: Ugh. grep for SLEEP in compile.c */ + if (sigrc == SIGILL) + abort (); + sigrc = 0; +#else + /* Why did we stop? */ + switch (reason) + { + case sim_signalled: + case sim_stopped: + if (sigrc != 0) + fprintf (stderr, "program stopped with signal %d.\n", sigrc); + break; + + case sim_exited: + break; + + default: + fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc); + break; + + } +#endif + + return sigrc; +} + +static void +usage () +{ + fprintf (stderr, "Usage: %s [options] program [program args]\n", myname); + fprintf (stderr, "Run `%s --help' for full list of options.\n", myname); + exit (1); +} + + +#ifdef __CYGWIN32__ +/* no-op GUI update hook for standalone sim */ +void (*ui_loop_hook) PARAMS ((int)) = NULL; +#endif |