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Ref gdb/11763 - can't stop a running simulator:

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o	Provide poll_quit callback to simulators
		so that they can poll for SIGINT on
		clueless OS's.

	o	Add sim_stop to simulators so that clients
		can request a halt (eg gdbtk's STOP button)
		Works for PPC!

	o	Re-arange remote-sim.c so that the
		hard work is moved from gdbsim_resume()
		to gdbsim_wait() (where it should be).
This commit is contained in:
Andrew Cagney
1997-04-18 12:24:52 +00:00
parent 2d3588808f
commit 8517f62b16
20 changed files with 693 additions and 40 deletions
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21
sim/ppc/main.c
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@ -23,9 +23,12 @@
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
#include "psim.h"
#include "options.h"
#include "device.h" /* FIXME: psim should provide the interface */
#include "events.h" /* FIXME: psim should provide the interface */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
@ -149,6 +152,7 @@ sim_io_read_stdin(char *buf,
return sim_io_eof;
break;
case DONT_USE_STDIO:
#if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL)
{
/* check for input */
int flags;
@ -189,6 +193,7 @@ sim_io_read_stdin(char *buf,
return result;
}
break;
#endif
default:
error("sim_io_read_stdin: invalid switch\n");
break;
@ -228,6 +233,15 @@ zfree(void *chunk)
free(chunk);
}
/* When a CNTRL-C occures, queue an event to shut down the simulation */
static RETSIGTYPE
cntrl_c(int sig)
{
psim_stop (simulation);
}
int
main(int argc, char **argv)
{
@ -264,7 +278,12 @@ main(int argc, char **argv)
psim_init(simulation);
psim_stack(simulation, argv, environ);
psim_run(simulation);
{
RETSIGTYPE (*prev) ();
prev = signal(SIGINT, cntrl_c);
psim_run(simulation);
signal(SIGINT, prev);
}
/* any final clean up */
if (ppc_trace[trace_print_info])