uint8_t TR::ExternalOrderedPair32BitRelocation::collectModifier()
{
TR::Compilation *comp = TR::comp();
uint8_t * relocatableMethodCodeStart = (uint8_t *)comp->getRelocatableMethodCodeStart();
uint8_t * updateLocation;
uint8_t * updateLocation2;
TR_ExternalRelocationTargetKind kind = getTargetKind();
if (TR::Compiler->target.cpu.isPower() &&
(kind == TR_ArrayCopyHelper || kind == TR_ArrayCopyToc || kind == TR_RamMethod || kind == TR_GlobalValue || kind == TR_BodyInfoAddressLoad || kind == TR_DataAddress || kind == TR_DebugCounter))
{
TR::Instruction *instr = (TR::Instruction *)getUpdateLocation();
TR::Instruction *instr2 = (TR::Instruction *)getLocation2();
updateLocation = instr->getBinaryEncoding();
updateLocation2 = instr2->getBinaryEncoding();
}
else
{
updateLocation = getUpdateLocation();
updateLocation2 = getLocation2();
}
int32_t iLoc = updateLocation - relocatableMethodCodeStart;
int32_t iLoc2 = updateLocation2 - relocatableMethodCodeStart;
AOTcgDiag0(comp, "TR::ExternalOrderedPair32BitRelocation::collectModifier\n");
if ( (iLoc < MIN_SHORT_OFFSET || iLoc > MAX_SHORT_OFFSET ) || (iLoc2 < MIN_SHORT_OFFSET || iLoc2 > MAX_SHORT_OFFSET ) )
return RELOCATION_TYPE_WIDE_OFFSET | RELOCATION_TYPE_ORDERED_PAIR;
return RELOCATION_TYPE_ORDERED_PAIR;
}
void TR::ExternalRelocation::apply(TR::CodeGenerator *codeGen)
{
TR::Compilation *comp = codeGen->comp();
AOTcgDiag1(comp, "TR::ExternalRelocation::apply updateLocation=" POINTER_PRINTF_FORMAT " \n", getUpdateLocation());
uint8_t * relocatableMethodCodeStart = (uint8_t *)comp->getRelocatableMethodCodeStart();
getRelocationRecord()->addRelocationEntry((uint32_t)(getUpdateLocation() - relocatableMethodCodeStart));
}
uint8_t TR::ExternalRelocation::collectModifier()
{
TR::Compilation *comp = TR::comp();
uint8_t * relocatableMethodCodeStart = (uint8_t *)comp->getRelocatableMethodCodeStart();
uint8_t * updateLocation = getUpdateLocation();
int32_t distanceFromStartOfBuffer = updateLocation - relocatableMethodCodeStart;
int32_t distanceFromStartOfMethod = updateLocation - comp->cg()->getCodeStart();
AOTcgDiag2(comp, "TR::ExternalRelocation::collectModifier distance from start of buffer=%x, from start of method=%x\n", distanceFromStartOfBuffer, distanceFromStartOfMethod);
if (distanceFromStartOfBuffer < MIN_SHORT_OFFSET || distanceFromStartOfBuffer > MAX_SHORT_OFFSET)
return RELOCATION_TYPE_WIDE_OFFSET;
return 0;
}
void TR::ExternalOrderedPair32BitRelocation::apply(TR::CodeGenerator *codeGen)
{
TR::Compilation *comp = codeGen->comp();
AOTcgDiag0(comp, "TR::ExternalOrderedPair32BitRelocation::apply\n");
TR::IteratedExternalRelocation *rec = getRelocationRecord();
uint8_t *codeStart = (uint8_t *)comp->getRelocatableMethodCodeStart();
TR_ExternalRelocationTargetKind kind = getRelocationRecord()->getTargetKind();
if (TR::Compiler->target.cpu.isPower() &&
(kind == TR_ArrayCopyHelper || kind == TR_ArrayCopyToc || kind == TR_RamMethodSequence || kind == TR_GlobalValue || kind == TR_BodyInfoAddressLoad || kind == TR_DataAddress || kind == TR_DebugCounter))
{
TR::Instruction *instr = (TR::Instruction *)getUpdateLocation();
TR::Instruction *instr2 = (TR::Instruction *)getLocation2();
rec->addRelocationEntry((uint32_t)(instr->getBinaryEncoding() - codeStart));
rec->addRelocationEntry((uint32_t)(instr2->getBinaryEncoding() - codeStart));
}
else
{
rec->addRelocationEntry(getUpdateLocation() - codeStart);
rec->addRelocationEntry(getLocation2() - codeStart);
}
}
void
OMR::CodeGenPhase::performProcessRelocationsPhase(TR::CodeGenerator * cg, TR::CodeGenPhase * phase)
{
TR::Compilation * comp = cg->comp();
if (comp->getPersistentInfo()->isRuntimeInstrumentationEnabled())
{
// This must be called before relocations to generate the relocation data for the profiled instructions.
cg->createHWPRecords();
}
phase->reportPhase(ProcessRelocationsPhase);
TR::LexicalMemProfiler mp(phase->getName(), comp->phaseMemProfiler());
LexicalTimer pt(phase->getName(), comp->phaseTimer());
cg->processRelocations();
cg->resizeCodeMemory();
cg->registerAssumptions();
cg->syncCode(cg->getBinaryBufferStart(), cg->getBinaryBufferCursor() - cg->getBinaryBufferStart());
if (comp->getOption(TR_EnableOSR))
{
if (comp->getOption(TR_TraceOSR) && !comp->getOption(TR_DisableOSRSharedSlots))
{
(*comp) << "OSRCompilationData is " << *comp->getOSRCompilationData() << "\n";
}
}
if (comp->getOption(TR_AOT) && (comp->getOption(TR_TraceRelocatableDataCG) || comp->getOption(TR_TraceRelocatableDataDetailsCG) || comp->getOption(TR_TraceReloCG)))
{
traceMsg(comp, "\n<relocatableDataCG>\n");
if (comp->getOption(TR_TraceRelocatableDataDetailsCG)) // verbose output
{
uint8_t * relocatableMethodCodeStart = (uint8_t *)comp->getRelocatableMethodCodeStart();
traceMsg(comp, "Code start = %8x, Method start pc = %x, Method start pc offset = 0x%x\n", relocatableMethodCodeStart, cg->getCodeStart(), cg->getCodeStart() - relocatableMethodCodeStart);
}
cg->getAheadOfTimeCompile()->dumpRelocationData();
traceMsg(comp, "</relocatableDataCG>\n");
}
if (debug("dumpCodeSizes"))
{
diagnostic("%08d %s\n", cg->getCodeLength(), comp->signature());
}
if (comp->getCurrentMethod() == NULL)
{
comp->getMethodSymbol()->setMethodAddress(cg->getBinaryBufferStart());
}
TR_ASSERT(cg->getCodeLength() <= cg->getEstimatedCodeLength(),
"Method length estimate must be conservatively large\n"
" codeLength = %d, estimatedCodeLength = %d \n",
cg->getCodeLength(), cg->getEstimatedCodeLength()
);
// also trace the interal stack atlas
cg->getStackAtlas()->close(cg);
TR::SimpleRegex * regex = comp->getOptions()->getSlipTrap();
if (regex && TR::SimpleRegex::match(regex, comp->getCurrentMethod()))
{
if (TR::Compiler->target.is64Bit())
{
setDllSlip((char*)cg->getCodeStart(),(char*)cg->getCodeStart()+cg->getCodeLength(),"SLIPDLL64", comp);
}
else
{
setDllSlip((char*)cg->getCodeStart(),(char*)cg->getCodeStart()+cg->getCodeLength(),"SLIPDLL31", comp);
}
}
if (comp->getOption(TR_TraceCG) || comp->getOptions()->getTraceCGOption(TR_TraceCGPostBinaryEncoding))
{
const char * title = "Post Relocation Instructions";
comp->getDebug()->dumpMethodInstrs(comp->getOutFile(), title, false, true);
traceMsg(comp,"<snippets>");
comp->getDebug()->print(comp->getOutFile(), cg->getSnippetList());
traceMsg(comp,"\n</snippets>\n");
auto iterator = cg->getSnippetList().begin();
int32_t estimatedSnippetStart = cg->getEstimatedSnippetStart();
while (iterator != cg->getSnippetList().end())
{
estimatedSnippetStart += (*iterator)->getLength(estimatedSnippetStart);
++iterator;
}
}
}