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/*
* Copyright 2019 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 "arch/arm/fastmodel/iris/thread_context.hh"
#include "iris/detail/IrisCppAdapter.h"
#include "iris/detail/IrisObjects.h"
namespace Iris
{
void
ThreadContext::initFromIrisInstance(const ResourceMap &resources)
{
bool enabled = false;
call().perInstanceExecution_getState(_instId, enabled);
_status = enabled ? Active : Suspended;
suspend();
}
iris::ResourceId
ThreadContext::extractResourceId(
const ResourceMap &resources, const std::string &name)
{
return resources.at(name).rscId;
}
void
ThreadContext::extractResourceMap(
ResourceIds &ids, const ResourceMap &resources,
const IdxNameMap &idx_names)
{
for (const auto &idx_name: idx_names) {
int idx = idx_name.first;
const std::string &name = idx_name.second;
if (idx >= ids.size())
ids.resize(idx + 1, iris::IRIS_UINT64_MAX);
ids[idx] = extractResourceId(resources, name);
}
}
iris::IrisErrorCode
ThreadContext::instanceRegistryChanged(
uint64_t esId, const iris::IrisValueMap &fields, uint64_t time,
uint64_t sInstId, bool syncEc, std::string &error_message_out)
{
const std::string &event = fields.at("EVENT").getString();
const iris::InstanceId id = fields.at("INST_ID").getU64();
const std::string &name = fields.at("INST_NAME").getString();
if (name != "component." + _irisPath)
return iris::E_ok;
if (event == "added")
_instId = id;
else if (event == "removed")
_instId = iris::IRIS_UINT64_MAX;
else
panic("Unrecognized event type %s", event);
return iris::E_ok;
}
iris::IrisErrorCode
ThreadContext::phaseInitLeave(
uint64_t esId, const iris::IrisValueMap &fields, uint64_t time,
uint64_t sInstId, bool syncEc, std::string &error_message_out)
{
std::vector<iris::ResourceInfo> resources;
call().resource_getList(_instId, resources);
ResourceMap resourceMap;
for (auto &resource: resources)
resourceMap[resource.name] = resource;
initFromIrisInstance(resourceMap);
return iris::E_ok;
}
ThreadContext::ThreadContext(
BaseCPU *cpu, int id, System *system,
iris::IrisConnectionInterface *iris_if, const std::string &iris_path) :
_cpu(cpu), _threadId(id), _system(system), _irisPath(iris_path),
_instId(iris::IRIS_UINT64_MAX), _status(Active),
client(iris_if, "client." + iris_path)
{
iris::InstanceInfo info;
auto ret_code = noThrow().instanceRegistry_getInstanceInfoByName(
info, "component." + iris_path);
if (ret_code == iris::E_ok) {
// The iris instance registry already new about this path.
_instId = info.instId;
} else {
// This path doesn't (yet) exist. Set the ID to something invalid.
_instId = iris::IRIS_UINT64_MAX;
}
typedef ThreadContext Self;
iris::EventSourceInfo evSrcInfo;
client.registerEventCallback<Self, &Self::instanceRegistryChanged>(
this, "ec_IRIS_INSTANCE_REGISTRY_CHANGED",
"Install the iris instance ID", "Iris::ThreadContext");
call().event_getEventSource(iris::IrisInstIdGlobalInstance, evSrcInfo,
"IRIS_INSTANCE_REGISTRY_CHANGED");
regEventStreamId = iris::IRIS_UINT64_MAX;
static const std::vector<std::string> fields =
{ "EVENT", "INST_ID", "INST_NAME" };
call().eventStream_create(iris::IrisInstIdGlobalInstance, regEventStreamId,
evSrcInfo.evSrcId, client.getInstId(), &fields);
client.registerEventCallback<Self, &Self::phaseInitLeave>(
this, "ec_IRIS_SIM_PHASE_INIT_LEAVE",
"Initialize register contexts", "Iris::ThreadContext");
call().event_getEventSource(iris::IrisInstIdSimulationEngine, evSrcInfo,
"IRIS_SIM_PHASE_INIT_LEAVE");
initEventStreamId = iris::IRIS_UINT64_MAX;
call().eventStream_create(
iris::IrisInstIdSimulationEngine, initEventStreamId,
evSrcInfo.evSrcId, client.getInstId());
}
ThreadContext::~ThreadContext()
{
call().eventStream_destroy(
iris::IrisInstIdSimulationEngine, initEventStreamId);
initEventStreamId = iris::IRIS_UINT64_MAX;
client.unregisterEventCallback("ec_IRIS_SIM_PHASE_INIT_LEAVE");
call().eventStream_destroy(
iris::IrisInstIdGlobalInstance, regEventStreamId);
regEventStreamId = iris::IRIS_UINT64_MAX;
client.unregisterEventCallback("ec_IRIS_INSTANCE_REGISTRY_CHANGED");
}
ThreadContext::Status
ThreadContext::status() const
{
return _status;
}
void
ThreadContext::setStatus(Status new_status)
{
if (new_status == Active) {
if (_status != Active)
call().perInstanceExecution_setState(_instId, true);
} else {
if (_status == Active)
call().perInstanceExecution_setState(_instId, false);
}
_status = new_status;
}
RegVal
ThreadContext::readMiscRegNoEffect(RegIndex misc_reg) const
{
iris::ResourceReadResult result;
call().resource_read(_instId, result, miscRegIds.at(misc_reg));
return result.data.at(0);
}
void
ThreadContext::setMiscRegNoEffect(RegIndex misc_reg, const RegVal val)
{
iris::ResourceWriteResult result;
call().resource_write(_instId, result, miscRegIds.at(misc_reg), val);
}
RegVal
ThreadContext::readIntReg(RegIndex reg_idx) const
{
iris::ResourceReadResult result;
call().resource_read(_instId, result, intRegIds.at(reg_idx));
return result.data.at(0);
}
void
ThreadContext::setIntReg(RegIndex reg_idx, RegVal val)
{
iris::ResourceWriteResult result;
call().resource_write(_instId, result, intRegIds.at(reg_idx), val);
}
} // namespace Iris
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