-/* This file is part of the program psim.
+/* The common simulator framework for GDB, the GNU Debugger.
- Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
+ Copyright 2002-2020 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 of the License, or
- (at your option) any later version.
+ Contributed by Andrew Cagney and Red Hat.
- 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.
-
- */
+ This file is part of GDB.
+ 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 3 of the License, or
+ (at your option) any later version.
-#ifndef _SIM_IO_C_
-#define _SIM_IO_C_
+ 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.
-#include "engine.h"
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+
+#include "sim-main.h"
+#include "sim-io.h"
+#include "targ-vals.h"
+
+#include <errno.h>
+#if HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <stdlib.h>
+
+/* Define the rate at which the simulator should poll the host
+ for a quit. */
+#ifndef POLL_QUIT_INTERVAL
+#define POLL_QUIT_INTERVAL 0x10
+#endif
+
+static int poll_quit_count = POLL_QUIT_INTERVAL;
/* See the file include/callbacks.h for a description */
-INLINE_SIM_IO(int)
-sim_io_init(engine *system)
+int
+sim_io_init (SIM_DESC sd)
{
- return system->callback->init (system->callback);
+ return STATE_CALLBACK (sd)->init (STATE_CALLBACK (sd));
}
-INLINE_SIM_IO(int)
-sim_io_shutdown(engine *system)
+int
+sim_io_shutdown (SIM_DESC sd)
{
- return system->callback->shutdown (system->callback);
+ return STATE_CALLBACK (sd)->shutdown (STATE_CALLBACK (sd));
}
-INLINE_SIM_IO(int)
-sim_io_unlink(engine *system,
- const char *f1)
+int
+sim_io_unlink (SIM_DESC sd,
+ const char *f1)
{
- return system->callback->unlink (system->callback, f1);
+ return STATE_CALLBACK (sd)->unlink (STATE_CALLBACK (sd), f1);
}
-INLINE_SIM_IO(long)
-sim_io_time(engine *system,
- long *t)
+long
+sim_io_time (SIM_DESC sd,
+ long *t)
{
- return system->callback->time (system->callback, t);
+ return STATE_CALLBACK (sd)->time (STATE_CALLBACK (sd), t);
}
-INLINE_SIM_IO(int)
-sim_io_system(engine *system, const char *s)
+int
+sim_io_system (SIM_DESC sd, const char *s)
{
- return system->callback->system (system->callback, s);
+ return STATE_CALLBACK (sd)->system (STATE_CALLBACK (sd), s);
}
-INLINE_SIM_IO(int)
-sim_io_rename(engine *system,
- const char *f1,
- const char *f2)
+int
+sim_io_rename (SIM_DESC sd,
+ const char *f1,
+ const char *f2)
{
- return system->callback->rename (system->callback, f1, f2);
+ return STATE_CALLBACK (sd)->rename (STATE_CALLBACK (sd), f1, f2);
}
-INLINE_SIM_IO(int)
-sim_io_write_stdout(engine *system,
- const char *buf,
- int len)
+int
+sim_io_write_stdout (SIM_DESC sd,
+ const char *buf,
+ int len)
{
switch (CURRENT_STDIO) {
case DO_USE_STDIO:
- return system->callback->write_stdout (system->callback, buf, len);
+ return STATE_CALLBACK (sd)->write_stdout (STATE_CALLBACK (sd), buf, len);
break;
case DONT_USE_STDIO:
- return system->callback->write (system->callback, 1, buf, len);
+ return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 1, buf, len);
break;
default:
- sim_io_error (system, "sim_io_write_stdout: unaccounted switch\n");
+ sim_io_error (sd, "sim_io_write_stdout: unaccounted switch\n");
break;
}
return 0;
}
-INLINE_SIM_IO(int)
-sim_io_flush_stdout(engine *system)
+void
+sim_io_flush_stdout (SIM_DESC sd)
{
switch (CURRENT_STDIO) {
case DO_USE_STDIO:
- return system->callback->flush_stdout (system->callback);
+ STATE_CALLBACK (sd)->flush_stdout (STATE_CALLBACK (sd));
break;
case DONT_USE_STDIO:
break;
default:
- sim_io_error (system, "sim_io_flush_stdout: unaccounted switch\n");
+ sim_io_error (sd, "sim_io_flush_stdout: unaccounted switch\n");
break;
}
}
-INLINE_SIM_IO(int)
-sim_io_write_stderr(engine *system,
- const char *buf,
- int len)
+int
+sim_io_write_stderr (SIM_DESC sd,
+ const char *buf,
+ int len)
{
switch (CURRENT_STDIO) {
case DO_USE_STDIO:
- return system->callback->write_stderr (system->callback, buf, len);
+ return STATE_CALLBACK (sd)->write_stderr (STATE_CALLBACK (sd), buf, len);
break;
case DONT_USE_STDIO:
- return system->callback->write (system->callback, 2, buf, len);
+ return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 2, buf, len);
break;
default:
- sim_io_error (system, "sim_io_write_stderr: unaccounted switch\n");
+ sim_io_error (sd, "sim_io_write_stderr: unaccounted switch\n");
break;
}
return 0;
}
-INLINE_SIM_IO(int)
-sim_io_flush_stderr(engine *system)
+void
+sim_io_flush_stderr (SIM_DESC sd)
{
switch (CURRENT_STDIO) {
case DO_USE_STDIO:
- return system->callback->flush_stderr (system->callback);
+ STATE_CALLBACK (sd)->flush_stderr (STATE_CALLBACK (sd));
break;
case DONT_USE_STDIO:
break;
default:
- sim_io_error (system, "sim_io_flush_stderr: unaccounted switch\n");
+ sim_io_error (sd, "sim_io_flush_stderr: unaccounted switch\n");
break;
}
}
-INLINE_SIM_IO(int)
-sim_io_write(engine *system,
- int fd,
- const char *buf,
- int len)
+int
+sim_io_write (SIM_DESC sd,
+ int fd,
+ const char *buf,
+ int len)
{
- return system->callback->write (system->callback, fd, buf, len);
+ return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), fd, buf, len);
}
-INLINE_SIM_IO(int)
-sim_io_read_stdin(engine *system,
- char *buf,
- int len)
+int
+sim_io_read_stdin (SIM_DESC sd,
+ char *buf,
+ int len)
{
switch (CURRENT_STDIO) {
case DO_USE_STDIO:
- return system->callback->read_stdin (system->callback, buf, len);
+ return STATE_CALLBACK (sd)->read_stdin (STATE_CALLBACK (sd), buf, len);
break;
case DONT_USE_STDIO:
- return system->callback->read (system->callback, 0, buf, len);
+ return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), 0, buf, len);
break;
default:
- sim_io_error (system, "sim_io_read_stdin: unaccounted switch\n");
+ sim_io_error (sd, "sim_io_read_stdin: unaccounted switch\n");
break;
}
return 0;
}
-INLINE_SIM_IO(int)
-sim_io_read(engine *system, int fd,
- char *buf,
- int len)
+int
+sim_io_read (SIM_DESC sd, int fd,
+ char *buf,
+ int len)
{
- return system->callback->read(system->callback, fd, buf, len);
+ return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), fd, buf, len);
}
-INLINE_SIM_IO(int)
-sim_io_open(engine *system,
- const char *name,
- int flags)
+int
+sim_io_open (SIM_DESC sd,
+ const char *name,
+ int flags)
{
- return system->callback->open (system->callback, name, flags);
+ return STATE_CALLBACK (sd)->open (STATE_CALLBACK (sd), name, flags);
}
-INLINE_SIM_IO(int)
-sim_io_lseek(engine *system,
- int fd,
- long off,
- int way)
+int
+sim_io_lseek (SIM_DESC sd,
+ int fd,
+ long off,
+ int way)
{
- return system->callback->lseek (system->callback, fd, off, way);
+ return STATE_CALLBACK (sd)->lseek (STATE_CALLBACK (sd), fd, off, way);
}
-INLINE_SIM_IO(int)
-sim_io_isatty(engine *system,
- int fd)
+int
+sim_io_isatty (SIM_DESC sd,
+ int fd)
{
- return system->callback->isatty (system->callback, fd);
+ return STATE_CALLBACK (sd)->isatty (STATE_CALLBACK (sd), fd);
}
-INLINE_SIM_IO(int)
-sim_io_get_errno(engine *system)
+int
+sim_io_get_errno (SIM_DESC sd)
{
- return system->callback->get_errno (system->callback);
+ return STATE_CALLBACK (sd)->get_errno (STATE_CALLBACK (sd));
}
-INLINE_SIM_IO(int)
-sim_io_close(engine *system,
- int fd)
+int
+sim_io_close (SIM_DESC sd,
+ int fd)
{
- return system->callback->close (system->callback, fd);
+ return STATE_CALLBACK (sd)->close (STATE_CALLBACK (sd), fd);
}
-INLINE_SIM_IO(void)
-sim_io_printf(engine *system,
- const char *fmt,
- ...)
+void
+sim_io_printf (SIM_DESC sd,
+ const char *fmt,
+ ...)
{
va_list ap;
- va_start(ap, fmt);
- system->callback->vprintf_filtered (system->callback, fmt, ap);
- va_end(ap);
+ va_start (ap, fmt);
+ STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+ va_end (ap);
}
-INLINE_SIM_IO(void)
-sim_io_vprintf(engine *system,
- const char *fmt,
- va_list ap)
+void
+sim_io_vprintf (SIM_DESC sd,
+ const char *fmt,
+ va_list ap)
{
- system->callback->vprintf_filtered (system->callback, fmt, ap);
+ STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
}
-INLINE_SIM_IO(void)
-sim_io_eprintf(engine *system,
- const char *fmt,
- ...)
+void
+sim_io_eprintf (SIM_DESC sd,
+ const char *fmt,
+ ...)
{
va_list ap;
- va_start(ap, fmt);
- system->callback->evprintf_filtered (system->callback, fmt, ap);
- va_end(ap);
+ va_start (ap, fmt);
+ STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+ va_end (ap);
}
-INLINE_SIM_IO(void)
-sim_io_evprintf(engine *system,
- const char *fmt,
- va_list ap)
+void
+sim_io_evprintf (SIM_DESC sd,
+ const char *fmt,
+ va_list ap)
{
- system->callback->evprintf_filtered (system->callback, fmt, ap);
+ STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
}
-INLINE_SIM_IO(void)
-sim_io_error(engine *system,
- const char *fmt,
- ...)
+void
+sim_io_error (SIM_DESC sd,
+ const char *fmt,
+ ...)
{
- char buf[1000];
- va_list ap;
- va_start(ap, fmt);
- vsprintf(buf, fmt, ap);
- va_end(ap);
+ if (sd == NULL || STATE_CALLBACK (sd) == NULL) {
+ va_list ap;
+ va_start (ap, fmt);
+ vfprintf (stderr, fmt, ap);
+ va_end (ap);
+ fprintf (stderr, "\n");
+ abort ();
+ }
+ else {
+ va_list ap;
+ va_start (ap, fmt);
+ STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+ va_end (ap);
+ STATE_CALLBACK (sd)->error (STATE_CALLBACK (sd), "");
+ }
+}
- if (strlen(buf) >= sizeof(buf))
- abort();
- system->callback->error (system->callback, "%s", buf);
+void
+sim_io_poll_quit (SIM_DESC sd)
+{
+ if (STATE_CALLBACK (sd)->poll_quit != NULL && poll_quit_count-- < 0)
+ {
+ poll_quit_count = POLL_QUIT_INTERVAL;
+ if (STATE_CALLBACK (sd)->poll_quit (STATE_CALLBACK (sd)))
+ sim_stop (sd);
+ }
}
+/* Based on gdb-4.17/sim/ppc/main.c:sim_io_read_stdin().
+
+ FIXME: Should not be calling fcntl() or grubbing around inside of
+ ->fdmap and ->errno.
+
+ FIXME: Some completly new mechanism for handling the general
+ problem of asynchronous IO is needed.
+
+ FIXME: This function does not supress the echoing (ECHO) of input.
+ Consequently polled input is always displayed.
+ FIXME: This function does not perform uncooked reads.
+ Consequently, data will not be read until an EOLN character has
+ been entered. A cntrl-d may force the early termination of a line */
+
+
+int
+sim_io_poll_read (SIM_DESC sd,
+ int sim_io_fd,
+ char *buf,
+ int sizeof_buf)
+{
+#if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL)
+ int fd = STATE_CALLBACK (sd)->fdmap[sim_io_fd];
+ int flags;
+ int status;
+ int nr_read;
+ int result;
+ STATE_CALLBACK (sd)->last_errno = 0;
+ /* get the old status */
+ flags = fcntl (fd, F_GETFL, 0);
+ if (flags == -1)
+ {
+ perror ("sim_io_poll_read");
+ return 0;
+ }
+ /* temp, disable blocking IO */
+ status = fcntl (fd, F_SETFL, flags | O_NDELAY);
+ if (status == -1)
+ {
+ perror ("sim_io_read_stdin");
+ return 0;
+ }
+ /* try for input */
+ nr_read = read (fd, buf, sizeof_buf);
+ if (nr_read >= 0)
+ {
+ /* printf ("<nr-read=%d>\n", nr_read); */
+ result = nr_read;
+ }
+ else
+ { /* nr_read < 0 */
+ result = -1;
+ STATE_CALLBACK (sd)->last_errno = errno;
+ }
+ /* return to regular vewing */
+ status = fcntl (fd, F_SETFL, flags);
+ if (status == -1)
+ {
+ perror ("sim_io_read_stdin");
+ /* return 0; */
+ }
+ return result;
+#else
+ return sim_io_read (sd, sim_io_fd, buf, sizeof_buf);
#endif
+}
+
+int
+sim_io_stat (SIM_DESC sd, const char *path, struct stat *buf)
+{
+ return STATE_CALLBACK (sd)->to_stat (STATE_CALLBACK (sd), path, buf);
+}
+
+int
+sim_io_fstat (SIM_DESC sd, int fd, struct stat *buf)
+{
+ return STATE_CALLBACK (sd)->to_fstat (STATE_CALLBACK (sd), fd, buf);
+}
projects / deliverable / binutils-gdb.git / blobdiff