explicit symbol(const SymbolRef& sym) {
StringRef name;
if(error_code err = sym.getName(name))
llvm_binary_fail(err);
this->name_ = name.str();
if (error_code err = sym.getType(this->kind_))
llvm_binary_fail(err);
if (error_code err = sym.getAddress(this->addr_))
llvm_binary_fail(err);
if (error_code err = sym.getSize(this->size_))
llvm_binary_fail(err);
uint32_t flags;
if (error_code err = sym.getFlags(flags))
llvm_binary_fail(err);
if (flags & SymbolRef::SF_Undefined) {
uint64_t addr;
if (error_code err = sym.getValue(addr))
llvm_binary_fail(err);
// This will not work for x86-64, since they usually zero
// the value. BFD library uses index correspondence
// between plt entry and relocation, to name the plt
// entry. We can't afford this.
if (addr) {
addr_ = addr;
size_ = 8;
}
}
}
void ModuleInfo::addSymbol(const SymbolRef &Symbol) {
SymbolRef::Type SymbolType;
if (error(Symbol.getType(SymbolType)))
return;
if (SymbolType != SymbolRef::ST_Function && SymbolType != SymbolRef::ST_Data)
return;
uint64_t SymbolAddress;
if (error(Symbol.getAddress(SymbolAddress)) ||
SymbolAddress == UnknownAddressOrSize)
return;
uint64_t SymbolSize;
// Getting symbol size is linear for Mach-O files, so assume that symbol
// occupies the memory range up to the following symbol.
if (isa<MachOObjectFile>(Module))
SymbolSize = 0;
else if (error(Symbol.getSize(SymbolSize)) ||
SymbolSize == UnknownAddressOrSize)
return;
StringRef SymbolName;
if (error(Symbol.getName(SymbolName)))
return;
// Mach-O symbol table names have leading underscore, skip it.
if (Module->isMachO() && SymbolName.size() > 0 && SymbolName[0] == '_')
SymbolName = SymbolName.drop_front();
// FIXME: If a function has alias, there are two entries in symbol table
// with same address size. Make sure we choose the correct one.
SymbolMapTy &M = SymbolType == SymbolRef::ST_Function ? Functions : Objects;
SymbolDesc SD = { SymbolAddress, SymbolSize };
M.insert(std::make_pair(SD, SymbolName));
}
explicit symbol(const SymbolRef& sym) {
StringRef name;
if(error_code err = sym.getName(name))
llvm_binary_fail(err);
this->name_ = name.str();
if (error_code err = sym.getType(this->kind_))
llvm_binary_fail(err);
if (error_code err = sym.getAddress(this->addr_))
llvm_binary_fail(err);
if (error_code err = sym.getSize(this->size_))
llvm_binary_fail(err);
}
