TBool ELFFile::Init(const TText * const aFileName)
//
// Read the ELF file into memory
//
{
delete [] iFileName;
iFileName = new TText[strlen((const char *)aFileName)+1];
strcpy ((char *)iFileName, (const char *)aFileName);
TInt error = HFile::Open(iFileName, &iFileHandle);
if (error!=0)
return EFalse;
TInt flength = HFile::GetLength(iFileHandle);
iElfFile = (Elf32_Ehdr *)HMem::Alloc(0,flength);
if (!iElfFile)
{
Print(EPeError,"Failed to allocate memory to read in file.\n");
Close();
return EFalse;
}
if (!HFile::Read(iFileHandle,iElfFile,flength))
{
Print(EPeError,"Unable to read file %s.\n",iFileName);
Close();
return EFalse;
}
Close();
if (!IsValidFileHeader(iElfFile))
{
Print(EPeError,"Invalid file header.\n");
return EFalse;
}
// we only support this....for the moment
iCpu = ECpuArmV4;
if (!InitHeaders()) return EFalse;
if (!InitDllData()) return EFalse;
iEntryPoint = iElfFile->e_entry;
iCodeSize = GetCodeSize();
iDataSize = GetDataSize();
iBssSize = GetBssSize();
iStackReservedSize = 0x2000;
iStackCommittedSize = 0x2000;
iLinkedBase = iCodeSegmentHdr->p_vaddr;
iImageIsDll = iDllData->ImageIsDll();
return ETrue;
}
/// <summary>Read the full method from the supplied buffer.</summary>
void Method::ReadMethod(IMAGE_COR_ILMETHOD* pMethod)
{
BYTE* pCode;
auto fatImage = static_cast<COR_ILMETHOD_FAT*>(&pMethod->Fat);
if (!fatImage->IsFat())
{
#ifdef TRACE_ENABLED
ATLTRACE(_T("TINY"));
#endif
auto tinyImage = static_cast<COR_ILMETHOD_TINY*>(&pMethod->Tiny);
m_header.CodeSize = tinyImage->GetCodeSize();
pCode = tinyImage->GetCode();
#ifdef TRACE_ENABLED
ATLTRACE(_T("TINY(%X) => (%d + 1) : %d"), m_header.CodeSize, m_header.CodeSize, m_header.MaxStack);
#endif
}
else
{
memcpy(&m_header, pMethod, fatImage->Size * sizeof(DWORD));
pCode = fatImage->GetCode();
#ifdef TRACE_ENABLED
ATLTRACE(_T("FAT(%X) => (%d + 12) : %d"), m_header.CodeSize, m_header.CodeSize, m_header.MaxStack);
#endif
}
SetBuffer(pCode);
ReadBody();
}
void CodeGenWorkItem::FinalizeNativeCode(Func *func)
{
NativeCodeData * data = func->GetNativeCodeDataAllocator()->Finalize();
NativeCodeData * transferData = func->GetTransferDataAllocator()->Finalize();
CodeGenNumberChunk * numberChunks = func->GetNumberAllocator()->Finalize();
this->functionBody->RecordNativeBaseAddress((BYTE *)GetCodeAddress(), GetCodeSize(), data, transferData, numberChunks, GetEntryPoint(), GetLoopNumber());
func->GetEmitBufferManager()->CompletePreviousAllocation(this->GetAllocation());
}
void CodeGenWorkItem::RecordNativeCode(Func *func, const BYTE* sourceBuffer)
{
if (!func->GetEmitBufferManager()->CommitBuffer(this->GetAllocation(), (BYTE *)GetCodeAddress(), GetCodeSize(), sourceBuffer))
{
Js::Throw::OutOfMemory();
}
this->isAllocationCommitted = true;
#if DBG_DUMP
if (Type() == JsLoopBodyWorkItemType)
{
func->GetEmitBufferManager()->totalBytesLoopBody += GetCodeSize();
}
#endif
}
