SIM_RC
sim_create_inferior (SIM_DESC sd,
struct bfd *abfd,
char **argv,
char **envp)
{
unsigned_word entry_point;
TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
entry_point));
if (simulator == NULL)
error ("No program loaded");
if (abfd != NULL)
entry_point = bfd_get_start_address (abfd);
else
entry_point = 0xfff00000; /* ??? */
psim_init(simulator);
psim_stack(simulator, argv, envp);
ASSERT (psim_write_register(simulator, -1 /* all start at same PC */,
&entry_point, "pc", cooked_transfer) > 0);
return SIM_RC_OK;
}
SIM_RC
sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty)
{
TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n",
prog, from_tty));
ASSERT(prog != NULL);
/* create the simulator */
TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n"));
simulator = psim_create(prog, root_device);
/* bring in all the data section */
psim_init(simulator);
/* get the start address */
if (abfd == NULL)
{
abfd = bfd_openr (prog, 0);
if (abfd == NULL)
error ("psim: can't open \"%s\": %s\n",
prog, bfd_errmsg (bfd_get_error ()));
if (!bfd_check_format (abfd, bfd_object))
{
const char *errmsg = bfd_errmsg (bfd_get_error ());
bfd_close (abfd);
error ("psim: \"%s\" is not an object file: %s\n",
prog, errmsg);
}
bfd_close (abfd);
}
return SIM_RC_OK;
}
int
main(int argc, char **argv)
{
const char *name_of_file;
char *arg_;
psim_status status;
device *root = psim_tree();
/* parse the arguments */
argv = psim_options(root, argv + 1);
if (argv[0] == NULL) {
if (ppc_trace[trace_opts]) {
print_options ();
return 0;
} else {
psim_usage(0, 0);
}
}
name_of_file = argv[0];
if (ppc_trace[trace_opts])
print_options ();
/* create the simulator */
simulation = psim_create(name_of_file, root);
/* fudge the environment so that _=prog-name */
arg_ = (char*)zalloc(strlen(argv[0]) + strlen("_=") + 1);
strcpy(arg_, "_=");
strcat(arg_, argv[0]);
putenv(arg_);
/* initialize it */
psim_init(simulation);
psim_stack(simulation, argv, environ);
{
RETSIGTYPE (*prev) ();
prev = signal(SIGINT, cntrl_c);
psim_run(simulation);
signal(SIGINT, prev);
}
/* any final clean up */
if (ppc_trace[trace_print_info])
psim_print_info (simulation, ppc_trace[trace_print_info]);
/* why did we stop */
status = psim_get_status(simulation);
switch (status.reason) {
case was_continuing:
error("psim: continuing while stopped!\n");
return 0;
case was_trap:
error("psim: no trap insn\n");
return 0;
case was_exited:
return status.signal;
case was_signalled:
printf ("%s: Caught signal %d at address 0x%lx\n",
name_of_file, (int)status.signal,
(long)status.program_counter);
return status.signal;
default:
error("unknown halt condition\n");
return 0;
}
}