b6ff600bca
execution pipeline (Alpha trapb & excb).
Add support for write memory barriers (mostly impacts
store buffer).
Add StaticInst flag to indicate memory barriers, though
this is not modeled in the pipeline yet.
arch/alpha/isa_desc:
Implement trapb, excb, mb, and wmb as insts with
no execution effect (empty execute() function) but
with flags that indicate their side effects.
Also make sure every instruction that needs to go to
the execute stage has a real opClass value, since we
are now using No_OpClass to signal insts that can get
dropped at dispatch.
StaticInst::branchTarget() is now a const method.
cpu/static_inst.hh:
Add flags to indicate serializing insts (trapb, excb) and
memory and write barriers.
Also declare some StaticInst methods as const methods.
dev/etherlink.hh:
sim/eventq.hh:
sim/serialize.cc:
sim/serialize.hh:
sim/sim_object.hh:
Make name() return value const.
--HG--
extra : convert_revision : 39520e71469fa20e0a7446b2e06b494eec17a02c
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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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 are
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* met: 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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* 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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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* @file
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* Device module for modelling a fixed bandwidth full duplex ethernet link
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*/
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#ifndef __ETHERLINK_HH__
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#define __ETHERLINK_HH__
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#include "sim/host.hh"
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#include "sim/eventq.hh"
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#include "dev/etherint.hh"
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#include "dev/etherpkt.hh"
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#include "sim/sim_object.hh"
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class EtherDump;
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/*
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* Model for a fixed bandwidth full duplex ethernet link
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*/
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class EtherLink : public SimObject
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{
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protected:
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class Interface;
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/*
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* Model for a single uni-directional link
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*/
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class Link : public Serializable {
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protected:
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std::string objName;
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Interface *txint;
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Interface *rxint;
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double ticks_per_byte;
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EtherDump *dump;
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protected:
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/*
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* Transfer is complete
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*/
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class DoneEvent : public Event
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{
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protected:
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Link *link;
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public:
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DoneEvent(EventQueue *q, Link *l)
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: Event(q), link(l) {}
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virtual void process() { link->txDone(); }
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virtual const char *description()
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{ return "ethernet link completion"; }
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};
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friend class DoneEvent;
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DoneEvent event;
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PacketPtr packet;
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void txDone();
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public:
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Link(const std::string &name, double rate, EtherDump *dump);
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~Link() {}
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virtual const std::string name() const { return objName; }
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bool busy() const { return (bool)packet; }
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bool transmit(PacketPtr &packet);
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void setTxInt(Interface *i) { assert(!txint); txint = i; }
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void setRxInt(Interface *i) { assert(!rxint); rxint = i; }
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};
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/*
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* Interface at each end of the link
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*/
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class Interface : public EtherInt
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{
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private:
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Link *txlink;
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public:
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Interface(const std::string &name, Link *txlink, Link *rxlink);
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bool recvPacket(PacketPtr &packet) { return txlink->transmit(packet); }
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void sendDone() { }
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};
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Link *link1;
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Link *link2;
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EtherInt *int1;
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EtherInt *int2;
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public:
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EtherLink(const std::string &name, EtherInt *i1, EtherInt *i2,
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Tick speed, EtherDump *dump);
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virtual ~EtherLink();
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};
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#endif // __ETHERLINK_HH__
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