9b188af13c
Use polling behaviour for gdb_getc() where convenient, this edges us closer to the console code.
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*-
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* Copyright (c) 2004 Marcel Moolenaar
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* All rights reserved.
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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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*
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <machine/bus.h>
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#include <gdb/gdb.h>
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#include <dev/uart/uart.h>
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#include <dev/uart/uart_cpu.h>
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static gdb_probe_f uart_dbg_probe;
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static gdb_init_f uart_dbg_init;
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static gdb_term_f uart_dbg_term;
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static gdb_getc_f uart_dbg_getc;
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static gdb_putc_f uart_dbg_putc;
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GDB_DBGPORT(uart, uart_dbg_probe, uart_dbg_init, uart_dbg_term,
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uart_dbg_getc, uart_dbg_putc);
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static struct uart_devinfo uart_dbgport;
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static int
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uart_dbg_probe(void)
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{
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if (uart_cpu_getdev(UART_DEV_DBGPORT, &uart_dbgport))
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return (-1);
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if (uart_probe(&uart_dbgport))
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return (-1);
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return (0);
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}
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static void
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uart_dbg_init(void)
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{
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uart_dbgport.type = UART_DEV_DBGPORT;
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uart_add_sysdev(&uart_dbgport);
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uart_init(&uart_dbgport);
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}
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static void
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uart_dbg_term(void)
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{
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uart_term(&uart_dbgport);
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}
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static void
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uart_dbg_putc(int c)
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{
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uart_putc(&uart_dbgport, c);
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}
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static int
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uart_dbg_getc(void)
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{
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return (uart_poll(&uart_dbgport));
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}
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