void Section::Optimize(AsmFile *fil)
{
AsmExpr::SetSection(this);
bool done = false;
while (!done)
{
int pc = 0;
done = true;
for (int i=0; i < instructions.size(); i++)
{
if (instructions[i]->IsLabel())
{
Label *l = instructions[i]->GetLabel();
if (l)
{
l->SetOffset(pc);
labels[l->GetName()] = pc;
}
}
else
{
int n = instructions[i]->GetSize() ;
instructions[i]->SetOffset(pc);
instructions[i]->Optimize(pc, false);
int m = instructions[i]->GetSize() ;
pc += m;
if (n != m)
done = false;
}
}
}
int pc = 0;
for (int i=0; i < instructions.size(); i++)
{
instructions[i]->Optimize(pc, true);
pc += instructions[i]->GetSize();
}
}
void AsmFile::DoLabel(std::string &name, int lineno)
{
NeedSection();
Label *label;
if (caseInsensitive)
{
for (int i=0; i < name.size(); i++)
name[i] = toupper(name[i]);
}
std::string realName = name;
bool nl = false;
if (name.size() > 2)
{
if (name[0] == '.' && name[1] == '.' && name[2] == '@')
{
if (name.size() == 3)
throw new std::runtime_error("Malformed non-local label");
nl = true;
}
}
if (!nl && name[0] == '.')
{
if (name == "..start")
{
if (startupSection)
{
throw new std::runtime_error("Multiple start addresses specified");
}
label = new Label(name, labels.size(), currentSection->GetSect());
startupSection = currentSection;
}
else
{
if (currentLabel)
{
realName = currentLabel->GetName() + name;
}
}
}
if (labels[realName] != NULL)
{
if (realName != "..start")
{
throw new std::runtime_error(std::string("Label '") + name + "' already exists.");
}
}
else
{
if (inAbsolute)
{
label = new Label(realName, labels.size(), 0);
label->SetOffset(absoluteValue);
AsmExpr::SetEqu(realName, new AsmExprNode(absoluteValue));
if (lineno >= 0)
listing.Add(label, lineno, preProcessor.InMacro());
}
else
{
label = new Label(realName, labels.size(), currentSection->GetSect()-1);
}
if (name[0] != '.')
{
currentLabel = label;
AsmExpr::SetCurrentLabel(label->GetName());
}
thisLabel = label;
labels[realName] = label;
numericLabels.push_back(label);
if (!inAbsolute)
currentSection->InsertLabel(label);
// if (lineno >= 0)
// listing.Add(thisLabel, lineno, preProcessor.InMacro());
if (realName == "..start")
startupLabel = label;
}
if (GetKeyword() == Lexer::colon)
{
NextToken();
thisLabel = NULL;
}
}
