/* The common simulator framework for GDB, the GNU Debugger.
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/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
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Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
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Contributed by Andrew Cagney and Red Hat.
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Contributed by Andrew Cagney and Red Hat.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "sim-main.h"
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#include "sim-main.h"
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#include "sim-io.h"
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#include "sim-io.h"
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#include "targ-vals.h"
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#include "targ-vals.h"
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#include <errno.h>
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#include <errno.h>
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#if HAVE_FCNTL_H
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#include <fcntl.h>
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#endif
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#endif
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#if HAVE_UNISTD_H
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#include <unistd.h>
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#endif
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#endif
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/* Define the rate at which the simulator should poll the host
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/* Define the rate at which the simulator should poll the host
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for a quit. */
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for a quit. */
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#ifndef POLL_QUIT_INTERVAL
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#ifndef POLL_QUIT_INTERVAL
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#define POLL_QUIT_INTERVAL 0x10
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#define POLL_QUIT_INTERVAL 0x10
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#endif
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#endif
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static int poll_quit_count = POLL_QUIT_INTERVAL;
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static int poll_quit_count = POLL_QUIT_INTERVAL;
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/* See the file include/callbacks.h for a description */
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/* See the file include/callbacks.h for a description */
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int
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int
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sim_io_init(SIM_DESC sd)
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sim_io_init(SIM_DESC sd)
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{
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{
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return STATE_CALLBACK (sd)->init (STATE_CALLBACK (sd));
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return STATE_CALLBACK (sd)->init (STATE_CALLBACK (sd));
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}
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}
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int
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int
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sim_io_shutdown(SIM_DESC sd)
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sim_io_shutdown(SIM_DESC sd)
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{
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{
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return STATE_CALLBACK (sd)->shutdown (STATE_CALLBACK (sd));
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return STATE_CALLBACK (sd)->shutdown (STATE_CALLBACK (sd));
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}
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}
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int
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int
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sim_io_unlink(SIM_DESC sd,
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sim_io_unlink(SIM_DESC sd,
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const char *f1)
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const char *f1)
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{
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{
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return STATE_CALLBACK (sd)->unlink (STATE_CALLBACK (sd), f1);
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return STATE_CALLBACK (sd)->unlink (STATE_CALLBACK (sd), f1);
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}
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}
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long
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long
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sim_io_time(SIM_DESC sd,
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sim_io_time(SIM_DESC sd,
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long *t)
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long *t)
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{
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{
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return STATE_CALLBACK (sd)->time (STATE_CALLBACK (sd), t);
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return STATE_CALLBACK (sd)->time (STATE_CALLBACK (sd), t);
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}
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}
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int
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int
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sim_io_system(SIM_DESC sd, const char *s)
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sim_io_system(SIM_DESC sd, const char *s)
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{
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{
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return STATE_CALLBACK (sd)->system (STATE_CALLBACK (sd), s);
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return STATE_CALLBACK (sd)->system (STATE_CALLBACK (sd), s);
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}
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}
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int
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int
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sim_io_rename(SIM_DESC sd,
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sim_io_rename(SIM_DESC sd,
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const char *f1,
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const char *f1,
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const char *f2)
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const char *f2)
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{
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{
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return STATE_CALLBACK (sd)->rename (STATE_CALLBACK (sd), f1, f2);
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return STATE_CALLBACK (sd)->rename (STATE_CALLBACK (sd), f1, f2);
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}
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}
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int
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int
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sim_io_write_stdout(SIM_DESC sd,
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sim_io_write_stdout(SIM_DESC sd,
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const char *buf,
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const char *buf,
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int len)
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int len)
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{
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{
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switch (CURRENT_STDIO) {
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switch (CURRENT_STDIO) {
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case DO_USE_STDIO:
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case DO_USE_STDIO:
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return STATE_CALLBACK (sd)->write_stdout (STATE_CALLBACK (sd), buf, len);
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return STATE_CALLBACK (sd)->write_stdout (STATE_CALLBACK (sd), buf, len);
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break;
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break;
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case DONT_USE_STDIO:
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case DONT_USE_STDIO:
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return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 1, buf, len);
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return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 1, buf, len);
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break;
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break;
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default:
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default:
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sim_io_error (sd, "sim_io_write_stdout: unaccounted switch\n");
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sim_io_error (sd, "sim_io_write_stdout: unaccounted switch\n");
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break;
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break;
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}
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}
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return 0;
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return 0;
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}
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}
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void
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void
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sim_io_flush_stdout(SIM_DESC sd)
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sim_io_flush_stdout(SIM_DESC sd)
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{
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{
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switch (CURRENT_STDIO) {
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switch (CURRENT_STDIO) {
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case DO_USE_STDIO:
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case DO_USE_STDIO:
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STATE_CALLBACK (sd)->flush_stdout (STATE_CALLBACK (sd));
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STATE_CALLBACK (sd)->flush_stdout (STATE_CALLBACK (sd));
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break;
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break;
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case DONT_USE_STDIO:
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case DONT_USE_STDIO:
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break;
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break;
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default:
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default:
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sim_io_error (sd, "sim_io_flush_stdout: unaccounted switch\n");
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sim_io_error (sd, "sim_io_flush_stdout: unaccounted switch\n");
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break;
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break;
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}
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}
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}
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}
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int
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int
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sim_io_write_stderr(SIM_DESC sd,
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sim_io_write_stderr(SIM_DESC sd,
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const char *buf,
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const char *buf,
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int len)
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int len)
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{
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{
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switch (CURRENT_STDIO) {
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switch (CURRENT_STDIO) {
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case DO_USE_STDIO:
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case DO_USE_STDIO:
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return STATE_CALLBACK (sd)->write_stderr (STATE_CALLBACK (sd), buf, len);
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return STATE_CALLBACK (sd)->write_stderr (STATE_CALLBACK (sd), buf, len);
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break;
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break;
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case DONT_USE_STDIO:
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case DONT_USE_STDIO:
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return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 2, buf, len);
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return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 2, buf, len);
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break;
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break;
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default:
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default:
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sim_io_error (sd, "sim_io_write_stderr: unaccounted switch\n");
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sim_io_error (sd, "sim_io_write_stderr: unaccounted switch\n");
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break;
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break;
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}
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}
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return 0;
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return 0;
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}
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}
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void
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void
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sim_io_flush_stderr(SIM_DESC sd)
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sim_io_flush_stderr(SIM_DESC sd)
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{
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{
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switch (CURRENT_STDIO) {
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switch (CURRENT_STDIO) {
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case DO_USE_STDIO:
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case DO_USE_STDIO:
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STATE_CALLBACK (sd)->flush_stderr (STATE_CALLBACK (sd));
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STATE_CALLBACK (sd)->flush_stderr (STATE_CALLBACK (sd));
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break;
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break;
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case DONT_USE_STDIO:
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case DONT_USE_STDIO:
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break;
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break;
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default:
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default:
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sim_io_error (sd, "sim_io_flush_stderr: unaccounted switch\n");
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sim_io_error (sd, "sim_io_flush_stderr: unaccounted switch\n");
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break;
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break;
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}
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}
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}
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}
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int
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int
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sim_io_write(SIM_DESC sd,
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sim_io_write(SIM_DESC sd,
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int fd,
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int fd,
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const char *buf,
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const char *buf,
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int len)
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int len)
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{
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{
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return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), fd, buf, len);
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return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), fd, buf, len);
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}
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}
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int
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int
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sim_io_read_stdin(SIM_DESC sd,
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sim_io_read_stdin(SIM_DESC sd,
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char *buf,
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char *buf,
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int len)
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int len)
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{
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{
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switch (CURRENT_STDIO) {
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switch (CURRENT_STDIO) {
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case DO_USE_STDIO:
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case DO_USE_STDIO:
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return STATE_CALLBACK (sd)->read_stdin (STATE_CALLBACK (sd), buf, len);
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return STATE_CALLBACK (sd)->read_stdin (STATE_CALLBACK (sd), buf, len);
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break;
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break;
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case DONT_USE_STDIO:
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case DONT_USE_STDIO:
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return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), 0, buf, len);
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return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), 0, buf, len);
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break;
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break;
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default:
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default:
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sim_io_error (sd, "sim_io_read_stdin: unaccounted switch\n");
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sim_io_error (sd, "sim_io_read_stdin: unaccounted switch\n");
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break;
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break;
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}
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}
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return 0;
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return 0;
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}
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}
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int
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int
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sim_io_read(SIM_DESC sd, int fd,
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sim_io_read(SIM_DESC sd, int fd,
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char *buf,
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char *buf,
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int len)
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int len)
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{
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{
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return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), fd, buf, len);
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return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), fd, buf, len);
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}
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}
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int
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int
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sim_io_open(SIM_DESC sd,
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sim_io_open(SIM_DESC sd,
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const char *name,
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const char *name,
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int flags)
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int flags)
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{
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{
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return STATE_CALLBACK (sd)->open (STATE_CALLBACK (sd), name, flags);
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return STATE_CALLBACK (sd)->open (STATE_CALLBACK (sd), name, flags);
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}
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}
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int
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int
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sim_io_lseek(SIM_DESC sd,
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sim_io_lseek(SIM_DESC sd,
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int fd,
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int fd,
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long off,
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long off,
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int way)
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int way)
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{
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{
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return STATE_CALLBACK (sd)->lseek (STATE_CALLBACK (sd), fd, off, way);
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return STATE_CALLBACK (sd)->lseek (STATE_CALLBACK (sd), fd, off, way);
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}
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}
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int
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int
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sim_io_isatty(SIM_DESC sd,
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sim_io_isatty(SIM_DESC sd,
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int fd)
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int fd)
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{
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{
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return STATE_CALLBACK (sd)->isatty (STATE_CALLBACK (sd), fd);
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return STATE_CALLBACK (sd)->isatty (STATE_CALLBACK (sd), fd);
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}
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}
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int
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int
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sim_io_get_errno(SIM_DESC sd)
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sim_io_get_errno(SIM_DESC sd)
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{
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{
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return STATE_CALLBACK (sd)->get_errno (STATE_CALLBACK (sd));
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return STATE_CALLBACK (sd)->get_errno (STATE_CALLBACK (sd));
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}
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}
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int
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int
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sim_io_close(SIM_DESC sd,
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sim_io_close(SIM_DESC sd,
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int fd)
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int fd)
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{
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{
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return STATE_CALLBACK (sd)->close (STATE_CALLBACK (sd), fd);
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return STATE_CALLBACK (sd)->close (STATE_CALLBACK (sd), fd);
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}
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}
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void
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void
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sim_io_printf(SIM_DESC sd,
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sim_io_printf(SIM_DESC sd,
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const char *fmt,
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const char *fmt,
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...)
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...)
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{
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{
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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va_end(ap);
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va_end(ap);
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}
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}
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void
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void
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sim_io_vprintf(SIM_DESC sd,
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sim_io_vprintf(SIM_DESC sd,
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const char *fmt,
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const char *fmt,
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va_list ap)
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va_list ap)
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{
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{
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STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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}
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}
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void
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void
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sim_io_eprintf(SIM_DESC sd,
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sim_io_eprintf(SIM_DESC sd,
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const char *fmt,
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const char *fmt,
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...)
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...)
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{
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{
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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va_end(ap);
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va_end(ap);
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}
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}
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void
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void
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sim_io_evprintf(SIM_DESC sd,
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sim_io_evprintf(SIM_DESC sd,
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const char *fmt,
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const char *fmt,
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va_list ap)
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va_list ap)
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{
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{
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STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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}
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}
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void
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void
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sim_io_error(SIM_DESC sd,
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sim_io_error(SIM_DESC sd,
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const char *fmt,
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const char *fmt,
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...)
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...)
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{
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{
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if (sd == NULL || STATE_CALLBACK (sd) == NULL) {
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if (sd == NULL || STATE_CALLBACK (sd) == NULL) {
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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vfprintf (stderr, fmt, ap);
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vfprintf (stderr, fmt, ap);
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va_end(ap);
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va_end(ap);
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fprintf (stderr, "\n");
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fprintf (stderr, "\n");
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abort ();
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abort ();
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}
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}
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else {
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else {
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
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va_end(ap);
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va_end(ap);
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STATE_CALLBACK (sd)->error (STATE_CALLBACK (sd), "");
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STATE_CALLBACK (sd)->error (STATE_CALLBACK (sd), "");
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}
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}
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}
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}
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void
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void
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sim_io_poll_quit(SIM_DESC sd)
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sim_io_poll_quit(SIM_DESC sd)
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{
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{
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if (STATE_CALLBACK (sd)->poll_quit != NULL && poll_quit_count-- < 0)
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if (STATE_CALLBACK (sd)->poll_quit != NULL && poll_quit_count-- < 0)
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{
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{
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poll_quit_count = POLL_QUIT_INTERVAL;
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poll_quit_count = POLL_QUIT_INTERVAL;
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if (STATE_CALLBACK (sd)->poll_quit (STATE_CALLBACK (sd)))
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if (STATE_CALLBACK (sd)->poll_quit (STATE_CALLBACK (sd)))
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sim_stop (sd);
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sim_stop (sd);
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}
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}
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}
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}
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|
/* Based on gdb-4.17/sim/ppc/main.c:sim_io_read_stdin().
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/* Based on gdb-4.17/sim/ppc/main.c:sim_io_read_stdin().
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|
|
FIXME: Should not be calling fcntl() or grubbing around inside of
|
FIXME: Should not be calling fcntl() or grubbing around inside of
|
->fdmap and ->errno.
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->fdmap and ->errno.
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|
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FIXME: Some completly new mechanism for handling the general
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FIXME: Some completly new mechanism for handling the general
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problem of asynchronous IO is needed.
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problem of asynchronous IO is needed.
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|
|
FIXME: This function does not supress the echoing (ECHO) of input.
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FIXME: This function does not supress the echoing (ECHO) of input.
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Consequently polled input is always displayed.
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Consequently polled input is always displayed.
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|
|
FIXME: This function does not perform uncooked reads.
|
FIXME: This function does not perform uncooked reads.
|
Consequently, data will not be read until an EOLN character has
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Consequently, data will not be read until an EOLN character has
|
been entered. A cntrl-d may force the early termination of a line */
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been entered. A cntrl-d may force the early termination of a line */
|
|
|
|
|
int
|
int
|
sim_io_poll_read (SIM_DESC sd,
|
sim_io_poll_read (SIM_DESC sd,
|
int sim_io_fd,
|
int sim_io_fd,
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char *buf,
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char *buf,
|
int sizeof_buf)
|
int sizeof_buf)
|
{
|
{
|
#if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL)
|
#if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL)
|
int fd = STATE_CALLBACK (sd)->fdmap[sim_io_fd];
|
int fd = STATE_CALLBACK (sd)->fdmap[sim_io_fd];
|
int flags;
|
int flags;
|
int status;
|
int status;
|
int nr_read;
|
int nr_read;
|
int result;
|
int result;
|
STATE_CALLBACK (sd)->last_errno = 0;
|
STATE_CALLBACK (sd)->last_errno = 0;
|
/* get the old status */
|
/* get the old status */
|
flags = fcntl (fd, F_GETFL, 0);
|
flags = fcntl (fd, F_GETFL, 0);
|
if (flags == -1)
|
if (flags == -1)
|
{
|
{
|
perror ("sim_io_poll_read");
|
perror ("sim_io_poll_read");
|
return 0;
|
return 0;
|
}
|
}
|
/* temp, disable blocking IO */
|
/* temp, disable blocking IO */
|
status = fcntl (fd, F_SETFL, flags | O_NDELAY);
|
status = fcntl (fd, F_SETFL, flags | O_NDELAY);
|
if (status == -1)
|
if (status == -1)
|
{
|
{
|
perror ("sim_io_read_stdin");
|
perror ("sim_io_read_stdin");
|
return 0;
|
return 0;
|
}
|
}
|
/* try for input */
|
/* try for input */
|
nr_read = read (fd, buf, sizeof_buf);
|
nr_read = read (fd, buf, sizeof_buf);
|
if (nr_read >= 0)
|
if (nr_read >= 0)
|
{
|
{
|
/* printf ("<nr-read=%d>\n", nr_read); */
|
/* printf ("<nr-read=%d>\n", nr_read); */
|
result = nr_read;
|
result = nr_read;
|
}
|
}
|
else
|
else
|
{ /* nr_read < 0 */
|
{ /* nr_read < 0 */
|
result = -1;
|
result = -1;
|
STATE_CALLBACK (sd)->last_errno = errno;
|
STATE_CALLBACK (sd)->last_errno = errno;
|
}
|
}
|
/* return to regular vewing */
|
/* return to regular vewing */
|
status = fcntl (fd, F_SETFL, flags);
|
status = fcntl (fd, F_SETFL, flags);
|
if (status == -1)
|
if (status == -1)
|
{
|
{
|
perror ("sim_io_read_stdin");
|
perror ("sim_io_read_stdin");
|
/* return 0; */
|
/* return 0; */
|
}
|
}
|
return result;
|
return result;
|
#else
|
#else
|
return sim_io_read (sd, sim_io_fd, buf, sizeof_buf);
|
return sim_io_read (sd, sim_io_fd, buf, sizeof_buf);
|
#endif
|
#endif
|
}
|
}
|
|
|
