source: bootcd/isolinux/syslinux-6.03/gpxe/src/core/gdbserial.c

/*
 * Copyright (C) 2008 Stefan Hajnoczi <stefanha@gmail.com>.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <assert.h>
#include <gpxe/serial.h>
#include <gpxe/gdbstub.h>
#include <gpxe/gdbserial.h>

struct gdb_transport serial_gdb_transport __gdb_transport;

static size_t gdbserial_recv ( char *buf, size_t len ) {
        assert ( len > 0 );
        buf [ 0 ] = serial_getc();
        return 1;
}

static void gdbserial_send ( const char *buf, size_t len ) {
        while ( len-- > 0 ) {
                serial_putc ( *buf++ );
        }
}

struct gdb_transport serial_gdb_transport __gdb_transport = {
        .name = "serial",
        .recv = gdbserial_recv,
        .send = gdbserial_send,
};

struct gdb_transport *gdbserial_configure ( void ) {
        return &serial_gdb_transport;
}