1 /* The common simulator framework for GDB, the GNU Debugger.
3 Copyright 2002, 2007 Free Software Foundation, Inc.
5 Contributed by Andrew Cagney and Red Hat.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
27 #include "targ-vals.h"
38 /* Define the rate at which the simulator should poll the host
40 #ifndef POLL_QUIT_INTERVAL
41 #define POLL_QUIT_INTERVAL 0x10
44 static int poll_quit_count = POLL_QUIT_INTERVAL;
46 /* See the file include/callbacks.h for a description */
50 sim_io_init(SIM_DESC sd)
52 return STATE_CALLBACK (sd)->init (STATE_CALLBACK (sd));
57 sim_io_shutdown(SIM_DESC sd)
59 return STATE_CALLBACK (sd)->shutdown (STATE_CALLBACK (sd));
64 sim_io_unlink(SIM_DESC sd,
67 return STATE_CALLBACK (sd)->unlink (STATE_CALLBACK (sd), f1);
72 sim_io_time(SIM_DESC sd,
75 return STATE_CALLBACK (sd)->time (STATE_CALLBACK (sd), t);
80 sim_io_system(SIM_DESC sd, const char *s)
82 return STATE_CALLBACK (sd)->system (STATE_CALLBACK (sd), s);
87 sim_io_rename(SIM_DESC sd,
91 return STATE_CALLBACK (sd)->rename (STATE_CALLBACK (sd), f1, f2);
96 sim_io_write_stdout(SIM_DESC sd,
100 switch (CURRENT_STDIO) {
102 return STATE_CALLBACK (sd)->write_stdout (STATE_CALLBACK (sd), buf, len);
105 return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 1, buf, len);
108 sim_io_error (sd, "sim_io_write_stdout: unaccounted switch\n");
116 sim_io_flush_stdout(SIM_DESC sd)
118 switch (CURRENT_STDIO) {
120 STATE_CALLBACK (sd)->flush_stdout (STATE_CALLBACK (sd));
125 sim_io_error (sd, "sim_io_flush_stdout: unaccounted switch\n");
132 sim_io_write_stderr(SIM_DESC sd,
136 switch (CURRENT_STDIO) {
138 return STATE_CALLBACK (sd)->write_stderr (STATE_CALLBACK (sd), buf, len);
141 return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), 2, buf, len);
144 sim_io_error (sd, "sim_io_write_stderr: unaccounted switch\n");
152 sim_io_flush_stderr(SIM_DESC sd)
154 switch (CURRENT_STDIO) {
156 STATE_CALLBACK (sd)->flush_stderr (STATE_CALLBACK (sd));
161 sim_io_error (sd, "sim_io_flush_stderr: unaccounted switch\n");
168 sim_io_write(SIM_DESC sd,
173 return STATE_CALLBACK (sd)->write (STATE_CALLBACK (sd), fd, buf, len);
178 sim_io_read_stdin(SIM_DESC sd,
182 switch (CURRENT_STDIO) {
184 return STATE_CALLBACK (sd)->read_stdin (STATE_CALLBACK (sd), buf, len);
187 return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), 0, buf, len);
190 sim_io_error (sd, "sim_io_read_stdin: unaccounted switch\n");
198 sim_io_read(SIM_DESC sd, int fd,
202 return STATE_CALLBACK (sd)->read (STATE_CALLBACK (sd), fd, buf, len);
207 sim_io_open(SIM_DESC sd,
211 return STATE_CALLBACK (sd)->open (STATE_CALLBACK (sd), name, flags);
216 sim_io_lseek(SIM_DESC sd,
221 return STATE_CALLBACK (sd)->lseek (STATE_CALLBACK (sd), fd, off, way);
226 sim_io_isatty(SIM_DESC sd,
229 return STATE_CALLBACK (sd)->isatty (STATE_CALLBACK (sd), fd);
234 sim_io_get_errno(SIM_DESC sd)
236 return STATE_CALLBACK (sd)->get_errno (STATE_CALLBACK (sd));
241 sim_io_close(SIM_DESC sd,
244 return STATE_CALLBACK (sd)->close (STATE_CALLBACK (sd), fd);
249 sim_io_printf(SIM_DESC sd,
255 STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
261 sim_io_vprintf(SIM_DESC sd,
265 STATE_CALLBACK (sd)->vprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
270 sim_io_eprintf(SIM_DESC sd,
276 STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
282 sim_io_evprintf(SIM_DESC sd,
286 STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
291 sim_io_error(SIM_DESC sd,
295 if (sd == NULL || STATE_CALLBACK (sd) == NULL) {
298 vfprintf (stderr, fmt, ap);
300 fprintf (stderr, "\n");
306 STATE_CALLBACK (sd)->evprintf_filtered (STATE_CALLBACK (sd), fmt, ap);
308 STATE_CALLBACK (sd)->error (STATE_CALLBACK (sd), "");
314 sim_io_poll_quit(SIM_DESC sd)
316 if (STATE_CALLBACK (sd)->poll_quit != NULL && poll_quit_count-- < 0)
318 poll_quit_count = POLL_QUIT_INTERVAL;
319 if (STATE_CALLBACK (sd)->poll_quit (STATE_CALLBACK (sd)))
325 /* Based on gdb-4.17/sim/ppc/main.c:sim_io_read_stdin().
327 FIXME: Should not be calling fcntl() or grubbing around inside of
330 FIXME: Some completly new mechanism for handling the general
331 problem of asynchronous IO is needed.
333 FIXME: This function does not supress the echoing (ECHO) of input.
334 Consequently polled input is always displayed.
336 FIXME: This function does not perform uncooked reads.
337 Consequently, data will not be read until an EOLN character has
338 been entered. A cntrl-d may force the early termination of a line */
342 sim_io_poll_read (SIM_DESC sd,
347 #if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL)
348 int fd = STATE_CALLBACK (sd)->fdmap[sim_io_fd];
353 STATE_CALLBACK (sd)->last_errno = 0;
354 /* get the old status */
355 flags = fcntl (fd, F_GETFL, 0);
358 perror ("sim_io_poll_read");
361 /* temp, disable blocking IO */
362 status = fcntl (fd, F_SETFL, flags | O_NDELAY);
365 perror ("sim_io_read_stdin");
369 nr_read = read (fd, buf, sizeof_buf);
372 /* printf ("<nr-read=%d>\n", nr_read); */
378 STATE_CALLBACK (sd)->last_errno = errno;
380 /* return to regular vewing */
381 status = fcntl (fd, F_SETFL, flags);
384 perror ("sim_io_read_stdin");
389 return sim_io_read (sd, sim_io_fd, buf, sizeof_buf);