Exemplo n.º 1
0
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;
}
Exemplo n.º 2
0
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;
                    }
                }
            }