Files
gem5/src/systemc/core/sc_prim.cc
Gabe Black 48701ed4bd systemc: Add a "changeStamp" value to the scheduler.
This value is incremented after each delta cycle's evaluate stage and
after timed notifications happen. Its value is used by some channels
to determine whether certain events happened within the previous update
phase to implement the "event()", "posedge()", and "negedge()"
functions.

Change-Id: I9a73f0b5007dcbb6a74da9d666f28da1930b9d3d
Reviewed-on: https://gem5-review.googlesource.com/c/12452
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
2018-10-03 00:25:29 +00:00

227 lines
4.8 KiB
C++

/*
* Copyright 2018 Google, Inc.
*
* 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.
*
* Authors: Gabe Black
*/
#include "base/logging.hh"
#include "systemc/core/channel.hh"
#include "systemc/core/scheduler.hh"
#include "systemc/ext/core/sc_prim.hh"
namespace sc_gem5
{
uint64_t getChangeStamp() { return scheduler.changeStamp(); }
} // namespace sc_gem5
namespace sc_core
{
sc_prim_channel::sc_prim_channel() :
_gem5_channel(new sc_gem5::Channel(this))
{}
sc_prim_channel::sc_prim_channel(const char *_name) :
sc_object(_name), _gem5_channel(new sc_gem5::Channel(this))
{}
sc_prim_channel::~sc_prim_channel() { delete _gem5_channel; }
void
sc_prim_channel::request_update()
{
_gem5_channel->requestUpdate();
}
void
sc_prim_channel::async_request_update()
{
_gem5_channel->asyncRequestUpdate();
}
void
sc_prim_channel::next_trigger()
{
::sc_core::next_trigger();
}
void
sc_prim_channel::next_trigger(const sc_event &e)
{
::sc_core::next_trigger(e);
}
void
sc_prim_channel::next_trigger(const sc_event_or_list &eol)
{
::sc_core::next_trigger(eol);
}
void
sc_prim_channel::next_trigger(const sc_event_and_list &eal)
{
::sc_core::next_trigger(eal);
}
void
sc_prim_channel::next_trigger(const sc_time &t)
{
::sc_core::next_trigger(t);
}
void
sc_prim_channel::next_trigger(double d, sc_time_unit u)
{
::sc_core::next_trigger(d, u);
}
void
sc_prim_channel::next_trigger(const sc_time &t, const sc_event &e)
{
::sc_core::next_trigger(t, e);
}
void
sc_prim_channel::next_trigger(double d, sc_time_unit u, const sc_event &e)
{
::sc_core::next_trigger(d, u, e);
}
void
sc_prim_channel::next_trigger(const sc_time &t, const sc_event_or_list &eol)
{
::sc_core::next_trigger(t, eol);
}
void
sc_prim_channel::next_trigger(
double d, sc_time_unit u, const sc_event_or_list &eol)
{
::sc_core::next_trigger(d, u, eol);
}
void
sc_prim_channel::next_trigger(const sc_time &t, const sc_event_and_list &eal)
{
::sc_core::next_trigger(t, eal);
}
void
sc_prim_channel::next_trigger(
double d, sc_time_unit u, const sc_event_and_list &eal)
{
::sc_core::next_trigger(d, u, eal);
}
bool
sc_prim_channel::timed_out()
{
warn("%s not implemented.\n", __PRETTY_FUNCTION__);
return false;
}
void
sc_prim_channel::wait()
{
::sc_core::wait();
}
void
sc_prim_channel::wait(int i)
{
::sc_core::wait(i);
}
void
sc_prim_channel::wait(const sc_event &e)
{
::sc_core::wait(e);
}
void
sc_prim_channel::wait(const sc_event_or_list &eol)
{
::sc_core::wait(eol);
}
void
sc_prim_channel::wait(const sc_event_and_list &eal)
{
::sc_core::wait(eal);
}
void
sc_prim_channel::wait(const sc_time &t)
{
::sc_core::wait(t);
}
void
sc_prim_channel::wait(double d, sc_time_unit u)
{
::sc_core::wait(d, u);
}
void
sc_prim_channel::wait(const sc_time &t, const sc_event &e)
{
::sc_core::wait(t, e);
}
void
sc_prim_channel::wait(double d, sc_time_unit u, const sc_event &e)
{
::sc_core::wait(d, u, e);
}
void
sc_prim_channel::wait(const sc_time &t, const sc_event_or_list &eol)
{
::sc_core::wait(t, eol);
}
void
sc_prim_channel::wait(double d, sc_time_unit u, const sc_event_or_list &eol)
{
::sc_core::wait(d, u, eol);
}
void
sc_prim_channel::wait(const sc_time &t, const sc_event_and_list &eal)
{
::sc_core::wait(t, eal);
}
void
sc_prim_channel::wait(double d, sc_time_unit u, const sc_event_and_list &eal)
{
::sc_core::wait(d, u, eal);
}
} // namespace sc_core