/*									tab:4 * * * "Copyright (c) 2000-2002 The Regents of the University  of California.   * All rights reserved. * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose, without fee, and without written * agreement is hereby granted, provided that the above copyright * notice, the following two paragraphs and the author appear in all * copies of this software. *  * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL * DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS * DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *  * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, * UPDATES, ENHANCEMENTS, OR MODIFICATIONS." * *//*									tab:4 *									 *  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. *  By downloading, copying, installing or using the software you *  agree to this license.  If you do not agree to this license, do *  not download, install, copy or use the software. * *  Intel Open Source License  * *  Copyright (c) 2002 Intel Corporation  *  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 Intel Corporation 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 INTEL OR ITS *  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. *  *  *//* * Authors:   Philip Levis <pal@cs.berkeley.edu> *            Neil Patel * History:   Apr 14, 2003         Inception. * *//** * @author Philip Levis <pal@cs.berkeley.edu> * @author Neil Patel */includes Bombilla;module OPuartM {  provides {    interface BombillaBytecode;    interface StdControl;    event result_t sendDone();  }  uses {    interface BombillaQueue as Queue;    interface BombillaContextSynch as Synch;    interface BombillaError as Error;    interface BombillaTypes as Types;    interface BombillaStacks as Stacks;    interface BombillaVirus as Virus;    interface SendMsg as SendPacket;  }}implementation {  BombillaQueue sendWaitQueue;  BombillaContext* sendingContext = NULL;  TOS_Msg msg;      command result_t StdControl.init() {    call Queue.init(&sendWaitQueue);    return SUCCESS;  }    command result_t StdControl.start() {    return SUCCESS;  }    command result_t StdControl.stop() {    return SUCCESS;  }  command result_t BombillaBytecode.execute(uint8_t instr,                                            BombillaContext* context) {    BombillaStackVariable* arg = call Stacks.popOperand(context);    if (!call Types.checkTypes(context, arg, BOMB_VAR_B)) {return FAIL;}    else {      int i;      BombillaDataBuffer* buffer = arg->buffer.var;      uint8_t len = buffer->size * sizeof(buffer->entries[0]);      len += sizeof(buffer->type) + sizeof(buffer->size);            for (i = 0; i < len; i++) {        msg.data[i] = ((uint8_t*)(buffer))[i];      }      // if (state->sendingContext == NULL) { // do we assume Generic Comm will take care of this?      if (call SendPacket.send(TOS_UART_ADDR, len, &msg))  {        dbg(DBG_USR1, "VM (%i): Sending packet to UART.\n", (int)context->which);        context->state = BOMB_STATE_SENDING;        sendingContext = context;      }      //}      else {        dbg(DBG_USR1, "VM (%i): UART send request refused. Enqueue and wait.\n", (int)context->which);                // Back up context so on being resumed it will try to send again        context->pc--;        call Stacks.pushOperand(context, arg);        call Queue.enqueue(context, &sendWaitQueue, context);        context->state = BOMB_STATE_SEND_WAIT;      }      call Synch.releaseLocks(context, context);      call Synch.yieldContext(context);    }    return SUCCESS;  }    event result_t SendPacket.sendDone(TOS_MsgPtr mesg, result_t success) {    BombillaContext* sender = sendingContext;    if (sender == NULL) {      return SUCCESS;    }    dbg(DBG_USR1, "VM: UART send completed with code. %i\n", (int)success);    if (sender->state != BOMB_STATE_SENDING) {      call Error.error(sender, BOMB_ERROR_QUEUE_INVALID);      return FAIL;    }    sendingContext = NULL;    call Synch.resumeContext(sender, sender);    return SUCCESS;  }  event result_t sendDone() { // Generic sendDone    BombillaContext* sender;    dbg(DBG_USR1, "VM: Send done event fired in uart.\n");    if (call Queue.empty(&sendWaitQueue)) {return FAIL;}    sender = call Queue.dequeue(sendingContext, &sendWaitQueue);    if (sender->state != BOMB_STATE_SEND_WAIT) {      call Error.error(sender, BOMB_ERROR_QUEUE_INVALID);    }    call Synch.resumeContext(sender, sender);    return SUCCESS;  }  event result_t Synch.makeRunnable(BombillaContext* context) {    return SUCCESS;  }    event result_t Virus.capsuleInstalled(BombillaCapsule* capsule) {    sendingContext = NULL;    call Queue.init(&sendWaitQueue);    return SUCCESS;  }  event result_t Virus.enableExecution() {    return SUCCESS;  }  event result_t Virus.disableExecution() {    return SUCCESS;  }  event result_t Virus.capsuleHeard(uint8_t type) {    return SUCCESS;  }  event void Virus.capsuleForce(uint8_t type) {    return;  }}