bool ObjIeeeAscii::Fixup(const char *buffer, eParseType ParseType)
{
if (!file || currentDataSection == NULL)
ThrowSyntax(buffer, ParseType);
int pos = 3;
if (buffer[2] != '(')
ThrowSyntax(buffer, ParseType);
ObjExpression *exp = GetExpression(buffer, &pos);
if (buffer[pos++] != ')')
ThrowSyntax(buffer, ParseType);
CheckTerm(buffer + pos);
if (exp->GetOperator() != ObjExpression::eNonExpression)
ThrowSyntax(buffer, ParseType);
if (exp->GetRight()->GetOperator() != ObjExpression::eValue)
ThrowSyntax(buffer, ParseType);
int size = exp->GetRight()->GetValue();
ObjExpression *left = exp->GetLeft();
ObjMemory *mem = factory->MakeFixup(left, size);
mem->SetDebugTags(currentTags);
currentTags = new ObjMemory::DebugTagContainer;
currentDataSection->Add(mem);
return false;
}
bool Tiny::ReadSections(ObjFile *file, ObjExpression *start)
{
startOffs = start->Eval(0);
if (startOffs != 0x100)
Utils::fatal("Start address for tiny program must be 0100h");
int count = 0;
ObjSection *sect;
for (ObjFile::SectionIterator it = file->SectionBegin(); it != file->SectionEnd(); ++it)
{
sect = *it;
size = (*it)->GetOffset()->Eval(0) + (*it)->GetSize()->Eval(0);
count ++;
}
if (count != 1 || size < 0x100)
return false;
data = new unsigned char[size];
ObjMemoryManager &m = sect->GetMemoryManager();
int ofs = 0;
for (ObjMemoryManager::MemoryIterator it = m.MemoryBegin(); it != m.MemoryEnd(); ++it)
{
int msize = (*it)->GetSize();
ObjByte *mdata = (*it)->GetData();
if (msize)
{
ObjExpression *fixup = (*it)->GetFixup();
if (fixup)
{
if (fixup->GetOperator() == ObjExpression::eDiv)
Utils::fatal("Tiny program cannot have fixups");
int sbase = sect->GetOffset()->Eval(0);
int n = fixup->Eval(sbase + ofs);
int bigEndian = file->GetBigEndian();
if (msize == 1)
{
data[ofs] = n & 0xff;
}
else if (msize == 2)
{
if (bigEndian)
{
data[ofs] = n >> 8;
data[ofs + 1] = n & 0xff;
}
else
{
data[ofs] = n & 0xff;
data[ofs+1] = n >> 8;
}
}
else // msize == 4
{
if (bigEndian)
{
data[ofs + 0] = n >> 24;
data[ofs + 1] = n >> 16;
data[ofs + 2] = n >> 8;
data[ofs + 3] = n & 0xff;
}
else
{
data[ofs] = n & 0xff;
data[ofs+1] = n >> 8;
data[ofs+2] = n >> 16;
data[ofs+3] = n >> 24;
}
}
}