void
BinMapOutput::OutputSymbols(const Section* sect)
{
for (Object::const_symbol_iterator sym = m_object.symbols_begin(),
end = m_object.symbols_end(); sym != end; ++sym)
{
const std::string& name = sym->getName();
const Expr* equ;
Location loc;
if (sect == 0 && (equ = sym->getEqu()))
{
std::auto_ptr<Expr> realequ(equ->clone());
realequ->Simplify(m_diags);
BinSimplify(*realequ);
realequ->Simplify(m_diags);
OutputIntNum(realequ->getIntNum());
m_os << " " << name << '\n';
}
else if (sym->getLabel(&loc) && loc.bc->getContainer() == sect)
{
// Real address
OutputIntNum(sect->getLMA() + loc.getOffset());
m_os << " ";
// Virtual address
OutputIntNum(sect->getVMA() + loc.getOffset());
// Name
m_os << " " << name << '\n';
}
}
}
static unsigned long
CountSymbols(const Object& object, const Section* sect)
{
unsigned long count = 0;
for (Object::const_symbol_iterator sym = object.symbols_begin(),
end = object.symbols_end(); sym != end; ++sym)
{
Location loc;
// TODO: autodetect wider size
if ((sect == 0 && sym->getEqu()) ||
(sym->getLabel(&loc) && loc.bc->getContainer() == sect))
count++;
}
return count;
}
void
XdfObject::Output(llvm::raw_fd_ostream& os,
bool all_syms,
DebugFormat& dbgfmt,
Diagnostic& diags)
{
all_syms = true; // force all syms into symbol table
// Get number of symbols and set symbol index in symbol data.
unsigned long symtab_count = 0;
for (Object::symbol_iterator sym = m_object.symbols_begin(),
end = m_object.symbols_end(); sym != end; ++sym)
{
int vis = sym->getVisibility();
if (vis & Symbol::COMMON)
{
diags.Report(sym->getDeclSource(),
diag::err_xdf_common_unsupported);
continue;
}
if (all_syms || (vis != Symbol::LOCAL && !(vis & Symbol::DLOCAL)))
{
// Save index in symrec data
sym->AddAssocData(
std::auto_ptr<XdfSymbol>(new XdfSymbol(symtab_count)));
++symtab_count;
}
}
// Number sections
long scnum = 0;
for (Object::section_iterator i = m_object.sections_begin(),
end = m_object.sections_end(); i != end; ++i)
{
XdfSection* xsect = i->getAssocData<XdfSection>();
assert(xsect != 0);
xsect->scnum = scnum++;
}
// Allocate space for headers by seeking forward
os.seek(FILEHEAD_SIZE+SECTHEAD_SIZE*scnum);
if (os.has_error())
{
diags.Report(SourceLocation(), diag::err_file_output_seek);
return;
}
XdfOutput out(os, m_object, diags);
// Get file offset of start of string table
unsigned long strtab_offset =
FILEHEAD_SIZE + SECTHEAD_SIZE*scnum + SYMBOL_SIZE*symtab_count;
// Output symbol table
for (Object::const_symbol_iterator sym = m_object.symbols_begin(),
end = m_object.symbols_end(); sym != end; ++sym)
{
out.OutputSymbol(*sym, all_syms, &strtab_offset);
}
// Output string table
for (Object::const_symbol_iterator sym = m_object.symbols_begin(),
end = m_object.symbols_end(); sym != end; ++sym)
{
if (all_syms || sym->getVisibility() != Symbol::LOCAL)
os << sym->getName() << '\0';
}
// Output section data/relocs
for (Object::section_iterator i=m_object.sections_begin(),
end=m_object.sections_end(); i != end; ++i)
{
out.OutputSection(*i);
}
// Write headers
os.seek(0);
if (os.has_error())
{
diags.Report(SourceLocation(), diag::err_file_output_seek);
return;
}
// Output object header
Bytes& scratch = out.getScratch();
scratch.setLittleEndian();
Write32(scratch, XDF_MAGIC); // magic number
Write32(scratch, scnum); // number of sects
Write32(scratch, symtab_count); // number of symtabs
// size of sect headers + symbol table + strings
Write32(scratch, strtab_offset-FILEHEAD_SIZE);
assert(scratch.size() == FILEHEAD_SIZE);
os << scratch;
// Output section headers
for (Object::const_section_iterator i=m_object.sections_begin(),
end=m_object.sections_end(); i != end; ++i)
{
const XdfSection* xsect = i->getAssocData<XdfSection>();
assert(xsect != 0);
Bytes& scratch2 = out.getScratch();
xsect->Write(scratch2, *i);
assert(scratch2.size() == SECTHEAD_SIZE);
os << scratch2;
}
}
