mirror of
https://sourceware.org/git/binutils-gdb.git
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f34652de0b
Currently, every internal_error call must be passed __FILE__/__LINE__ explicitly, like: internal_error (__FILE__, __LINE__, "foo %d", var); The need to pass in explicit __FILE__/__LINE__ is there probably because the function predates widespread and portable variadic macros availability. We can use variadic macros nowadays, and in fact, we already use them in several places, including the related gdb_assert_not_reached. So this patch renames the internal_error function to something else, and then reimplements internal_error as a variadic macro that expands __FILE__/__LINE__ itself. The result is that we now should call internal_error like so: internal_error ("foo %d", var); Likewise for internal_warning. The patch adjusts all calls sites. 99% of the adjustments were done with a perl/sed script. The non-mechanical changes are in gdbsupport/errors.h, gdbsupport/gdb_assert.h, and gdb/gdbarch.py. Approved-By: Simon Marchi <simon.marchi@efficios.com> Change-Id: Ia6f372c11550ca876829e8fd85048f4502bdcf06
717 lines
16 KiB
C
717 lines
16 KiB
C
/* Generic serial interface routines
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Copyright (C) 1992-2022 Free Software Foundation, Inc.
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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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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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(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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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include <ctype.h>
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#include "serial.h"
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#include "gdbcmd.h"
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#include "cli/cli-utils.h"
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/* Is serial being debugged? */
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static unsigned int global_serial_debug_p;
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/* Serial I/O handlers. */
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static std::vector<const struct serial_ops *> serial_ops_list;
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/* Pointer to list of scb's. */
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static struct serial *scb_base;
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/* Non-NULL gives filename which contains a recording of the remote session,
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suitable for playback by gdbserver. */
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static std::string serial_logfile;
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static struct ui_file *serial_logfp = NULL;
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static const struct serial_ops *serial_interface_lookup (const char *);
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static void serial_logchar (struct ui_file *stream,
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int ch_type, int ch, int timeout);
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static const char logbase_hex[] = "hex";
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static const char logbase_octal[] = "octal";
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static const char logbase_ascii[] = "ascii";
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static const char *const logbase_enums[] =
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{logbase_hex, logbase_octal, logbase_ascii, NULL};
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static const char *serial_logbase = logbase_ascii;
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static int serial_current_type = 0;
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/* Log char CH of type CHTYPE, with TIMEOUT. */
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/* Define bogus char to represent a BREAK. Should be careful to choose a value
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that can't be confused with a normal char, or an error code. */
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#define SERIAL_BREAK 1235
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static void
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serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout)
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{
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if (ch_type != serial_current_type)
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{
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gdb_printf (stream, "\n%c ", ch_type);
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serial_current_type = ch_type;
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}
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if (serial_logbase != logbase_ascii)
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gdb_putc (' ', stream);
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switch (ch)
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{
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case SERIAL_TIMEOUT:
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gdb_printf (stream, "<Timeout: %d seconds>", timeout);
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return;
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case SERIAL_ERROR:
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gdb_printf (stream, "<Error: %s>", safe_strerror (errno));
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return;
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case SERIAL_EOF:
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gdb_puts ("<Eof>", stream);
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return;
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case SERIAL_BREAK:
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gdb_puts ("<Break>", stream);
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return;
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default:
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if (serial_logbase == logbase_hex)
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gdb_printf (stream, "%02x", ch & 0xff);
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else if (serial_logbase == logbase_octal)
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gdb_printf (stream, "%03o", ch & 0xff);
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else
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switch (ch)
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{
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case '\\':
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gdb_puts ("\\\\", stream);
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break;
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case '\b':
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gdb_puts ("\\b", stream);
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break;
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case '\f':
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gdb_puts ("\\f", stream);
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break;
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case '\n':
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gdb_puts ("\\n", stream);
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break;
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case '\r':
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gdb_puts ("\\r", stream);
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break;
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case '\t':
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gdb_puts ("\\t", stream);
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break;
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case '\v':
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gdb_puts ("\\v", stream);
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break;
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default:
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gdb_printf (stream,
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isprint (ch) ? "%c" : "\\x%02x", ch & 0xFF);
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break;
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}
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}
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}
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void
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serial_log_command (struct target_ops *self, const char *cmd)
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{
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if (!serial_logfp)
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return;
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serial_current_type = 'c';
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gdb_puts ("\nc ", serial_logfp);
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gdb_puts (cmd, serial_logfp);
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/* Make sure that the log file is as up-to-date as possible,
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in case we are getting ready to dump core or something. */
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gdb_flush (serial_logfp);
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}
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static const struct serial_ops *
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serial_interface_lookup (const char *name)
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{
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for (const serial_ops *ops : serial_ops_list)
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if (strcmp (name, ops->name) == 0)
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return ops;
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return NULL;
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}
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void
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serial_add_interface (const struct serial_ops *optable)
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{
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serial_ops_list.push_back (optable);
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}
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/* Return the open serial device for FD, if found, or NULL if FD is
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not already opened. */
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struct serial *
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serial_for_fd (int fd)
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{
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struct serial *scb;
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for (scb = scb_base; scb; scb = scb->next)
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if (scb->fd == fd)
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return scb;
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return NULL;
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}
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/* Create a new serial for OPS. */
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static struct serial *
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new_serial (const struct serial_ops *ops)
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{
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struct serial *scb;
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scb = XCNEW (struct serial);
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scb->ops = ops;
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scb->bufp = scb->buf;
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scb->error_fd = -1;
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scb->refcnt = 1;
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return scb;
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}
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static struct serial *serial_open_ops_1 (const struct serial_ops *ops,
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const char *open_name);
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/* Open up a device or a network socket, depending upon the syntax of NAME. */
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struct serial *
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serial_open (const char *name)
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{
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const struct serial_ops *ops;
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const char *open_name = name;
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if (startswith (name, "|"))
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ops = serial_interface_lookup ("pipe");
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/* Check for a colon, suggesting an IP address/port pair.
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Do this *after* checking for all the interesting prefixes. We
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don't want to constrain the syntax of what can follow them. */
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else if (strchr (name, ':'))
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ops = serial_interface_lookup ("tcp");
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else
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{
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#ifndef USE_WIN32API
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/* Check to see if name is a socket. If it is, then treat it
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as such. Otherwise assume that it's a character device. */
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struct stat sb;
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if (stat (name, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFSOCK)
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ops = serial_interface_lookup ("local");
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else
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#endif
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ops = serial_interface_lookup ("hardwire");
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}
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if (!ops)
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return NULL;
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return serial_open_ops_1 (ops, open_name);
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}
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/* Open up a serial for OPS, passing OPEN_NAME to the open method. */
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static struct serial *
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serial_open_ops_1 (const struct serial_ops *ops, const char *open_name)
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{
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struct serial *scb;
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scb = new_serial (ops);
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/* `...->open (...)' would get expanded by the open(2) syscall macro. */
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if ((*scb->ops->open) (scb, open_name))
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{
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xfree (scb);
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return NULL;
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}
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scb->name = open_name != NULL ? xstrdup (open_name) : NULL;
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scb->next = scb_base;
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scb_base = scb;
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if (!serial_logfile.empty ())
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{
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stdio_file_up file (new stdio_file ());
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if (!file->open (serial_logfile.c_str (), "w"))
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perror_with_name (serial_logfile.c_str ());
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serial_logfp = file.release ();
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}
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return scb;
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}
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/* See serial.h. */
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struct serial *
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serial_open_ops (const struct serial_ops *ops)
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{
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return serial_open_ops_1 (ops, NULL);
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}
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/* Open a new serial stream using a file handle, using serial
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interface ops OPS. */
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static struct serial *
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serial_fdopen_ops (const int fd, const struct serial_ops *ops)
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{
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struct serial *scb;
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if (!ops)
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{
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ops = serial_interface_lookup ("terminal");
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if (!ops)
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ops = serial_interface_lookup ("hardwire");
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}
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if (!ops)
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return NULL;
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scb = new_serial (ops);
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scb->name = NULL;
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scb->next = scb_base;
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scb_base = scb;
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if ((ops->fdopen) != NULL)
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(*ops->fdopen) (scb, fd);
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else
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scb->fd = fd;
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return scb;
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}
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struct serial *
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serial_fdopen (const int fd)
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{
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return serial_fdopen_ops (fd, NULL);
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}
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static void
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do_serial_close (struct serial *scb, int really_close)
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{
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struct serial *tmp_scb;
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if (serial_logfp)
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{
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gdb_puts ("\nEnd of log\n", serial_logfp);
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serial_current_type = 0;
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/* XXX - What if serial_logfp == gdb_stdout or gdb_stderr? */
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delete serial_logfp;
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serial_logfp = NULL;
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}
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/* ensure that the FD has been taken out of async mode. */
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if (scb->async_handler != NULL)
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serial_async (scb, NULL, NULL);
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if (really_close)
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scb->ops->close (scb);
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xfree (scb->name);
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/* For serial_is_open. */
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scb->bufp = NULL;
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if (scb_base == scb)
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scb_base = scb_base->next;
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else
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for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)
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{
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if (tmp_scb->next != scb)
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continue;
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tmp_scb->next = tmp_scb->next->next;
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break;
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}
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serial_unref (scb);
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}
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void
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serial_close (struct serial *scb)
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{
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do_serial_close (scb, 1);
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}
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void
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serial_un_fdopen (struct serial *scb)
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{
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do_serial_close (scb, 0);
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}
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int
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serial_is_open (struct serial *scb)
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{
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return scb->bufp != NULL;
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}
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void
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serial_ref (struct serial *scb)
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{
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scb->refcnt++;
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}
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void
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serial_unref (struct serial *scb)
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{
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--scb->refcnt;
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if (scb->refcnt == 0)
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xfree (scb);
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}
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int
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serial_readchar (struct serial *scb, int timeout)
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{
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int ch;
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/* FIXME: cagney/1999-10-11: Don't enable this check until the ASYNC
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code is finished. */
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if (0 && serial_is_async_p (scb) && timeout < 0)
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internal_error (_("serial_readchar: blocking read in async mode"));
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ch = scb->ops->readchar (scb, timeout);
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if (serial_logfp != NULL)
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{
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serial_logchar (serial_logfp, 'r', ch, timeout);
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/* Make sure that the log file is as up-to-date as possible,
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in case we are getting ready to dump core or something. */
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gdb_flush (serial_logfp);
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}
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if (serial_debug_p (scb))
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{
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gdb_printf (gdb_stdlog, "[");
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serial_logchar (gdb_stdlog, 'r', ch, timeout);
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gdb_printf (gdb_stdlog, "]");
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gdb_flush (gdb_stdlog);
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}
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return (ch);
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}
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int
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serial_write (struct serial *scb, const void *buf, size_t count)
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{
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if (serial_logfp != NULL)
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{
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const char *str = (const char *) buf;
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size_t c;
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for (c = 0; c < count; c++)
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serial_logchar (serial_logfp, 'w', str[c] & 0xff, 0);
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/* Make sure that the log file is as up-to-date as possible,
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in case we are getting ready to dump core or something. */
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gdb_flush (serial_logfp);
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}
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if (serial_debug_p (scb))
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{
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const char *str = (const char *) buf;
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size_t c;
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for (c = 0; c < count; c++)
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{
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gdb_printf (gdb_stdlog, "[");
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serial_logchar (gdb_stdlog, 'w', str[c] & 0xff, 0);
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gdb_printf (gdb_stdlog, "]");
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}
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gdb_flush (gdb_stdlog);
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}
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return (scb->ops->write (scb, buf, count));
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}
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void
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serial_printf (struct serial *desc, const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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std::string buf = string_vprintf (format, args);
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serial_write (desc, buf.c_str (), buf.length ());
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va_end (args);
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}
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int
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serial_drain_output (struct serial *scb)
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{
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return scb->ops->drain_output (scb);
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}
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int
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serial_flush_output (struct serial *scb)
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{
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return scb->ops->flush_output (scb);
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}
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int
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serial_flush_input (struct serial *scb)
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{
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return scb->ops->flush_input (scb);
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}
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int
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serial_send_break (struct serial *scb)
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{
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if (serial_logfp != NULL)
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serial_logchar (serial_logfp, 'w', SERIAL_BREAK, 0);
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return (scb->ops->send_break (scb));
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}
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void
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serial_raw (struct serial *scb)
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{
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scb->ops->go_raw (scb);
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}
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serial_ttystate
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serial_get_tty_state (struct serial *scb)
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{
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return scb->ops->get_tty_state (scb);
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}
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serial_ttystate
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serial_copy_tty_state (struct serial *scb, serial_ttystate ttystate)
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{
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return scb->ops->copy_tty_state (scb, ttystate);
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}
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int
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serial_set_tty_state (struct serial *scb, serial_ttystate ttystate)
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{
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return scb->ops->set_tty_state (scb, ttystate);
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}
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void
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serial_print_tty_state (struct serial *scb,
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serial_ttystate ttystate,
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struct ui_file *stream)
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{
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scb->ops->print_tty_state (scb, ttystate, stream);
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}
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int
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serial_setbaudrate (struct serial *scb, int rate)
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{
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return scb->ops->setbaudrate (scb, rate);
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}
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int
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serial_setstopbits (struct serial *scb, int num)
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{
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return scb->ops->setstopbits (scb, num);
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}
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/* See serial.h. */
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int
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serial_setparity (struct serial *scb, int parity)
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{
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return scb->ops->setparity (scb, parity);
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}
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int
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serial_can_async_p (struct serial *scb)
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{
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return (scb->ops->async != NULL);
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}
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int
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serial_is_async_p (struct serial *scb)
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{
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return (scb->ops->async != NULL) && (scb->async_handler != NULL);
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}
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void
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serial_async (struct serial *scb,
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serial_event_ftype *handler,
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void *context)
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{
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int changed = ((scb->async_handler == NULL) != (handler == NULL));
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scb->async_handler = handler;
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scb->async_context = context;
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/* Only change mode if there is a need. */
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if (changed)
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scb->ops->async (scb, handler != NULL);
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}
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void
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serial_debug (struct serial *scb, int debug_p)
|
||
{
|
||
scb->debug_p = debug_p;
|
||
}
|
||
|
||
int
|
||
serial_debug_p (struct serial *scb)
|
||
{
|
||
return scb->debug_p || global_serial_debug_p;
|
||
}
|
||
|
||
#ifdef USE_WIN32API
|
||
void
|
||
serial_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except)
|
||
{
|
||
if (scb->ops->wait_handle)
|
||
scb->ops->wait_handle (scb, read, except);
|
||
else
|
||
{
|
||
*read = (HANDLE) _get_osfhandle (scb->fd);
|
||
*except = NULL;
|
||
}
|
||
}
|
||
|
||
void
|
||
serial_done_wait_handle (struct serial *scb)
|
||
{
|
||
if (scb->ops->done_wait_handle)
|
||
scb->ops->done_wait_handle (scb);
|
||
}
|
||
#endif
|
||
|
||
int
|
||
serial_pipe (struct serial *scbs[2])
|
||
{
|
||
const struct serial_ops *ops;
|
||
int fildes[2];
|
||
|
||
ops = serial_interface_lookup ("pipe");
|
||
if (!ops)
|
||
{
|
||
errno = ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
if (gdb_pipe (fildes) == -1)
|
||
return -1;
|
||
|
||
scbs[0] = serial_fdopen_ops (fildes[0], ops);
|
||
scbs[1] = serial_fdopen_ops (fildes[1], ops);
|
||
return 0;
|
||
}
|
||
|
||
/* Serial set/show framework. */
|
||
|
||
static struct cmd_list_element *serial_set_cmdlist;
|
||
static struct cmd_list_element *serial_show_cmdlist;
|
||
|
||
/* See serial.h. */
|
||
|
||
int baud_rate = -1;
|
||
|
||
static void
|
||
serial_baud_show_cmd (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
gdb_printf (file, _("Baud rate for remote serial I/O is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* See serial.h. */
|
||
|
||
int serial_parity = GDBPARITY_NONE;
|
||
|
||
static const char parity_none[] = "none";
|
||
static const char parity_odd[] = "odd";
|
||
static const char parity_even[] = "even";
|
||
static const char *const parity_enums[] =
|
||
{parity_none, parity_odd, parity_even, NULL};
|
||
static const char *parity = parity_none;
|
||
|
||
/* Set serial_parity value. */
|
||
|
||
static void
|
||
set_parity (const char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (parity == parity_odd)
|
||
serial_parity = GDBPARITY_ODD;
|
||
else if (parity == parity_even)
|
||
serial_parity = GDBPARITY_EVEN;
|
||
else
|
||
serial_parity = GDBPARITY_NONE;
|
||
}
|
||
|
||
void _initialize_serial ();
|
||
void
|
||
_initialize_serial ()
|
||
{
|
||
#if 0
|
||
add_com ("connect", class_obscure, connect_command, _("\
|
||
Connect the terminal directly up to the command monitor.\n\
|
||
Use <CR>~. or <CR>~^D to break out."));
|
||
#endif /* 0 */
|
||
|
||
add_setshow_prefix_cmd ("serial", class_maintenance,
|
||
_("Set default serial/parallel port configuration."),
|
||
_("Show default serial/parallel port configuration."),
|
||
&serial_set_cmdlist, &serial_show_cmdlist,
|
||
&setlist, &showlist);
|
||
|
||
/* If target is open when baud changes, it doesn't take effect until
|
||
the next open (I think, not sure). */
|
||
add_setshow_zinteger_cmd ("baud", no_class, &baud_rate, _("\
|
||
Set baud rate for remote serial I/O."), _("\
|
||
Show baud rate for remote serial I/O."), _("\
|
||
This value is used to set the speed of the serial port when debugging\n\
|
||
using remote targets."),
|
||
NULL,
|
||
serial_baud_show_cmd,
|
||
&serial_set_cmdlist, &serial_show_cmdlist);
|
||
|
||
add_setshow_enum_cmd ("parity", no_class, parity_enums,
|
||
&parity, _("\
|
||
Set parity for remote serial I/O."), _("\
|
||
Show parity for remote serial I/O."), NULL,
|
||
set_parity,
|
||
NULL, /* FIXME: i18n: */
|
||
&serial_set_cmdlist, &serial_show_cmdlist);
|
||
|
||
add_setshow_filename_cmd ("remotelogfile", no_class, &serial_logfile, _("\
|
||
Set filename for remote session recording."), _("\
|
||
Show filename for remote session recording."), _("\
|
||
This file is used to record the remote session for future playback\n\
|
||
by gdbserver."),
|
||
NULL,
|
||
NULL, /* FIXME: i18n: */
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_enum_cmd ("remotelogbase", no_class, logbase_enums,
|
||
&serial_logbase, _("\
|
||
Set numerical base for remote session logging."), _("\
|
||
Show numerical base for remote session logging."), NULL,
|
||
NULL,
|
||
NULL, /* FIXME: i18n: */
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_zuinteger_cmd ("serial", class_maintenance,
|
||
&global_serial_debug_p, _("\
|
||
Set serial debugging."), _("\
|
||
Show serial debugging."), _("\
|
||
When non-zero, serial port debugging is enabled."),
|
||
NULL,
|
||
NULL, /* FIXME: i18n: */
|
||
&setdebuglist, &showdebuglist);
|
||
}
|