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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/targeting/runtime/start_rt.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2017 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#include <targeting/common/commontargeting.H>
#include <targeting/common/targetservice.H>
#include <targeting/attrrp.H>
#include <util/misc.H>
#include <targeting/common/trace.H>
#include <targeting/common/utilFilter.H>
using namespace TARGETING;
namespace RT_TARG
{
void adjustTargeting4Runtime();
static void initTargeting() __attribute__((constructor));
static void initTargeting()
{
errlHndl_t l_errl = NULL;
AttrRP::init(l_errl);
if (l_errl)
{
errlCommit(l_errl, TARG_COMP_ID);
assert(false);
}
TargetService& l_targetService = targetService();
(void)l_targetService.init();
adjustTargeting4Runtime();
// set global that TARG is ready
Util::setIsTargetingLoaded();
}
// Make any adjustments needed to targeting for runtime
void adjustTargeting4Runtime()
{
TRACDCOMP(g_trac_targeting,"adjustTargeting4Runtime");
// Loop through all targets and fix those with ATTR_PEER_TARGETs.
//
// ATTR_PEER_TARGET is the only attribute using the Target_t type.
// The value of a Target_t attribute is a Target * "pointer" to
// another target. The value is set up by the targeting scripts at
// build time. Targeting uses a translate function to nagivate through
// the targeting binary. There is a runtime translation function used
// at run time to account for the location of the targeting binary
// being at a different spot at runtime. The Target_t * value of
// the attribute remains pointing into where the targeting binary
// was at IPL. Using this "old" address would seg fault at run time.
// The value of the ATTR_PEER_TARGET attributes must be translated
// for run time.
// The _trySetAttr is used directly to avoid the trySetAttr template
// error check that ATTR_PEER_TARGET is only readable, not writable.
// adjustTargeting4Runtime has been included as a friend to allow
// access to the private target class methods.
const Target* l_pUnused = NULL;
size_t l_xlateCnt = 0;
for (TargetIterator target = targetService().begin();
target != targetService().end();
++target)
{
const TARGETING::Target * l_target = *target;
TARGETING::Target * l_peer = static_cast<Target*>(NULL);
bool l_hasPeer = l_target->tryGetAttr<ATTR_PEER_TARGET>(l_peer);
if (l_hasPeer)
{
TRACDCOMP(g_trac_targeting,
"translate peer target for=%p %x",
l_target, get_huid(l_target));
ATTR_PEER_TARGET_type l_xlated = (TARGETING::Target *)
Singleton<AttrRP>::instance().
AttrRP::translateAddr(l_peer,l_pUnused);
bool l_fixed = false;
l_fixed = l_target->_trySetAttr(ATTR_PEER_TARGET,
sizeof(l_xlated),
&l_xlated);
if (l_fixed)
{
TRACDCOMP(g_trac_targeting, " to=%p", l_xlated);
l_xlateCnt++;
}
// Not good if could not be fixed. But might not be referenced.
// A segment fault will occur if used.
else
{
TRACFCOMP(g_trac_targeting,
"failed to translate peer target HUID=0x%x",
get_huid(l_target));
}
}
}
TRACFCOMP(g_trac_targeting,
"adjustTargeting4Runtime: %d peer target addresses translated",
l_xlateCnt);
}
}
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