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-rw-r--r--sim/common/sim-io.c379
1 files changed, 379 insertions, 0 deletions
diff --git a/sim/common/sim-io.c b/sim/common/sim-io.c
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--- /dev/null
+++ b/sim/common/sim-io.c
@@ -0,0 +1,379 @@
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
+ Copyright (C) 1998, Cygnus Solutions.
+
+ 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.
+
+ 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 "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
+
+
+/* See the file include/callbacks.h for a description */
+
+
+int
+sim_io_init(SIM_DESC sd)
+{
+ return STATE_CALLBACK (sd)->init (STATE_CALLBACK (sd));
+}
+
+
+int
+sim_io_shutdown(SIM_DESC sd)
+{
+ return STATE_CALLBACK (sd)->shutdown (STATE_CALLBACK (sd));
+}
+
+
+int
+sim_io_unlink(SIM_DESC sd,
+ const char *f1)
+{
+ return STATE_CALLBACK (sd)->unlink (STATE_CALLBACK (sd), f1);
+}
+
+
+long
+sim_io_time(SIM_DESC sd,
+ long *t)
+{
+ return STATE_CALLBACK (sd)->time (STATE_CALLBACK (sd), t);
+}
+
+
+int
+sim_io_system(SIM_DESC sd, const char *s)
+{
+ return STATE_CALLBACK (sd)->system (STATE_CALLBACK (sd), s);
+}
+
+
+int
+sim_io_rename(SIM_DESC sd,
+ const char *f1,
+ const char *f2)
+{
+ return STATE_CALLBACK (sd)->rename (STATE_CALLBACK (sd), f1, f2);
+}
+
+
+int
+sim_io_write_stdout(SIM_DESC sd,
+ const char *buf,
+ int len)
+{
+ switch (CURRENT_STDIO) {
+ case DO_USE_STDIO:
+ return STATE_CALLBACK (sd)->write_stdout (STATE_CALLBACK (sd), buf, len);
+ break;
+ case DONT_USE_STDIO:
+ return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 1, buf, len);
+ break;
+ default:
+ sim_io_error (sd, "sim_io_write_stdout: unaccounted switch\n");
+ break;
+ }
+ return 0;
+}
+
+
+void
+sim_io_flush_stdout(SIM_DESC sd)
+{
+ switch (CURRENT_STDIO) {
+ case DO_USE_STDIO:
+ STATE_CALLBACK (sd)->flush_stdout (STATE_CALLBACK (sd));
+ break;
+ case DONT_USE_STDIO:
+ break;
+ default:
+ sim_io_error (sd, "sim_io_flush_stdout: unaccounted switch\n");
+ break;
+ }
+}
+
+
+int
+sim_io_write_stderr(SIM_DESC sd,
+ const char *buf,
+ int len)
+{
+ switch (CURRENT_STDIO) {
+ case DO_USE_STDIO:
+ return STATE_CALLBACK (sd)->write_stderr (STATE_CALLBACK (sd), buf, len);
+ break;
+ case DONT_USE_STDIO:
+ return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 2, buf, len);
+ break;
+ default:
+ sim_io_error (sd, "sim_io_write_stderr: unaccounted switch\n");
+ break;
+ }
+ return 0;
+}
+
+
+void
+sim_io_flush_stderr(SIM_DESC sd)
+{
+ switch (CURRENT_STDIO) {
+ case DO_USE_STDIO:
+ STATE_CALLBACK (sd)->flush_stderr (STATE_CALLBACK (sd));
+ break;
+ case DONT_USE_STDIO:
+ break;
+ default:
+ sim_io_error (sd, "sim_io_flush_stderr: unaccounted switch\n");
+ break;
+ }
+}
+
+
+int
+sim_io_write(SIM_DESC sd,
+ int fd,
+ const char *buf,
+ int len)
+{
+ return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), fd, buf, len);
+}
+
+
+int
+sim_io_read_stdin(SIM_DESC sd,
+ char *buf,
+ int len)
+{
+ switch (CURRENT_STDIO) {
+ case DO_USE_STDIO:
+ return STATE_CALLBACK (sd)->read_stdin (STATE_CALLBACK (sd), buf, len);
+ break;
+ case DONT_USE_STDIO:
+ return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), 0, buf, len);
+ break;
+ default:
+ sim_io_error (sd, "sim_io_read_stdin: unaccounted switch\n");
+ break;
+ }
+ return 0;
+}
+
+
+int
+sim_io_read(SIM_DESC sd, int fd,
+ char *buf,
+ int len)
+{
+ return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), fd, buf, len);
+}
+
+
+int
+sim_io_open(SIM_DESC sd,
+ const char *name,
+ int flags)
+{
+ return STATE_CALLBACK (sd)->open (STATE_CALLBACK (sd), name, flags);
+}
+
+
+int
+sim_io_lseek(SIM_DESC sd,
+ int fd,
+ long off,
+ int way)
+{
+ return STATE_CALLBACK (sd)->lseek (STATE_CALLBACK (sd), fd, off, way);
+}
+
+
+int
+sim_io_isatty(SIM_DESC sd,
+ int fd)
+{
+ return STATE_CALLBACK (sd)->isatty (STATE_CALLBACK (sd), fd);
+}
+
+
+int
+sim_io_get_errno(SIM_DESC sd)
+{
+ return STATE_CALLBACK (sd)->get_errno (STATE_CALLBACK (sd));
+}
+
+
+int
+sim_io_close(SIM_DESC sd,
+ int fd)
+{
+ return STATE_CALLBACK (sd)->close (STATE_CALLBACK (sd), fd);
+}
+
+
+void
+sim_io_printf(SIM_DESC sd,
+ const char *fmt,
+ ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+ va_end(ap);
+}
+
+
+void
+sim_io_vprintf(SIM_DESC sd,
+ const char *fmt,
+ va_list ap)
+{
+ STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+}
+
+
+void
+sim_io_eprintf(SIM_DESC sd,
+ const char *fmt,
+ ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+ va_end(ap);
+}
+
+
+void
+sim_io_evprintf(SIM_DESC sd,
+ const char *fmt,
+ va_list ap)
+{
+ STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
+}
+
+
+void
+sim_io_error(SIM_DESC sd,
+ const char *fmt,
+ ...)
+{
+ 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), "");
+ }
+}
+
+
+void
+sim_io_poll_quit(SIM_DESC sd)
+{
+ if (STATE_CALLBACK (sd)->poll_quit != NULL)
+ 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
+}
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