35e61cbd71
ddb is entered. Don't refer to `in_Debugger' to see if we are in the debugger. (The variable used to be static in Debugger() and wasn't updated if ddb is entered via traps and panic anyway.) - Don't refer to `in_Debugger'. - Add `db_active' to i386/i386/db_interface.d (as in alpha/alpha/db_interface.c). - Remove cnpollc() stub from ddb/db_input.c. - Add the dbctl function to syscons, pcvt, and sio. (The function for pcvt and sio is noop at the moment.) Jointly developed by: bde and me (The final version was tweaked by me and not reviewed by bde. Thus, if there is any error in this commit, that is entirely of mine, not his.) Some changes were obtained from: NetBSD
102 lines
3.8 KiB
C
102 lines
3.8 KiB
C
/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)cons.h 7.2 (Berkeley) 5/9/91
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CONS_H_
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#define _MACHINE_CONS_H_
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struct consdev;
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typedef void cn_probe_t __P((struct consdev *));
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typedef void cn_init_t __P((struct consdev *));
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typedef void cn_term_t __P((struct consdev *));
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typedef int cn_getc_t __P((dev_t));
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typedef int cn_checkc_t __P((dev_t));
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typedef void cn_putc_t __P((dev_t, int));
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typedef void cn_dbctl_t __P((dev_t, int));
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struct consdev {
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cn_probe_t *cn_probe;
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/* probe hardware and fill in consdev info */
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cn_init_t *cn_init;
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/* turn on as console */
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cn_term_t *cn_term;
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/* turn off as console */
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cn_getc_t *cn_getc;
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/* kernel getchar interface */
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cn_checkc_t *cn_checkc;
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/* kernel "return char if available" interface */
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cn_putc_t *cn_putc;
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/* kernel putchar interface */
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cn_dbctl_t *cn_dbctl;
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/* debugger control interface */
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struct tty *cn_tp; /* tty structure for console device */
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dev_t cn_dev; /* major/minor of device */
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short cn_pri; /* pecking order; the higher the better */
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};
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/* values for cn_pri - reflect our policy for console selection */
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#define CN_DEAD 0 /* device doesn't exist */
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#define CN_NORMAL 1 /* device exists but is nothing special */
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#define CN_INTERNAL 2 /* "internal" bit-mapped display */
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#define CN_REMOTE 3 /* serial interface with remote bit set */
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#ifdef _KERNEL
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extern struct linker_set cons_set;
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extern int cons_unavail;
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extern struct consdev *cn_tab;
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#define CONS_DRIVER(name, probe, init, term, getc, checkc, putc, dbctl) \
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static struct consdev name##_consdev = { \
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probe, init, term, getc, checkc, putc, dbctl \
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}; \
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DATA_SET(cons_set, name##_consdev)
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/* Other kernel entry points. */
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int cncheckc __P((void));
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int cngetc __P((void));
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void cninit __P((void));
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void cninit_finish __P((void));
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void cndbctl __P((int));
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void cnputc __P((int));
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CONS_H_ */
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