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/*
* Copyright (c) 2003 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* @file
* User Console Interface
*/
#ifndef __CONSOLE_HH__
#define __CONSOLE_HH__
#include <iostream>
#include "base/circlebuf.hh"
#include "cpu/intr_control.hh"
#include "base/pollevent.hh"
#include "base/socket.hh"
#include "sim/sim_object.hh"
class ConsoleListener;
class SimConsole : public SimObject
{
protected:
class Event : public PollEvent
{
protected:
SimConsole *cons;
public:
Event(SimConsole *c, int fd, int e);
void process(int revent);
};
friend class Event;
Event *event;
protected:
int number;
int in_fd;
int out_fd;
protected:
ConsoleListener *listener;
public:
SimConsole(const std::string &name, const std::string &file, int num);
~SimConsole();
protected:
CircleBuf txbuf;
CircleBuf rxbuf;
std::ostream *outfile;
#if TRACING_ON == 1
CircleBuf linebuf;
#endif
public:
///////////////////////
// Terminal Interface
void attach(int fd, ConsoleListener *l = NULL) { attach(fd, fd, l); }
void attach(int in, int out, ConsoleListener *l = NULL);
void detach();
void data();
void close();
void read(uint8_t &c) { read(&c, 1); }
size_t read(uint8_t *buf, size_t len);
void write(uint8_t c) { write(&c, 1); }
size_t write(const uint8_t *buf, size_t len);
void configTerm();
protected:
// interrupt status/enable
int _status;
int _enable;
// interrupt handle
IntrControl *intr;
public:
/////////////////
// OS interface
// Get a character from the console.
bool in(uint8_t &value);
// get a character from the console in the console specific format
// corresponds to GETC:
// retval<63:61>
// 000: success: character received
// 001: success: character received, more pending
// 100: failure: no character ready
// 110: failure: character received with error
// 111: failure: character received with error, more pending
// retval<31:0>
// character read from console
//
// Interrupts are cleared when the buffer is empty.
uint64_t console_in();
// Send a character to the console
void out(char c, bool raise_int = true);
enum {
TransmitInterrupt = 1,
ReceiveInterrupt = 2
};
// Read the current interrupt status of this console.
int intStatus() { return _status; }
// Set the interrupt enable bits.
int clearInt(int i);
void raiseInt(int i);
void initInt(IntrControl *i);
void setInt(int bits);
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string §ion);
};
class ConsoleListener : public SimObject
{
protected:
class Event : public PollEvent
{
protected:
ConsoleListener *listener;
public:
Event(ConsoleListener *l, int fd, int e)
: PollEvent(fd, e), listener(l) {}
void process(int revent);
};
friend class Event;
Event *event;
typedef std::list<SimConsole *> list_t;
typedef list_t::iterator iter_t;
list_t ConsoleList;
protected:
ListenSocket listener;
public:
ConsoleListener(const std::string &name);
~ConsoleListener();
void add(SimConsole *cons);
void accept();
void listen(int port);
};
#endif // __CONSOLE_HH__
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