bool load(std::istream &in, Memory& mem, addr_t img_base) {
if (virt_sz > 0) {
addr_t sect_addr_va = img_base + virt_addr;
int prot = get_prot(charac);
mem.alloc_protect(sect_addr_va , virt_sz, prot | Memory::Write);
//TODO check for file_sz > virt_sz (explained in spec)
if (file_sz > 0) {
std::istream::streampos pos_orig = in.tellg();
if (pos_orig == std::istream::pos_type(std::istream::off_type(-1)))
return false;
in.seekg(file_pos, std::ios_base::beg);
// TODO is "bad()" the right thing to check?
if (in.bad())
return false;
char *sect_data = new char[file_sz];
in.read(sect_data, file_sz);
if (std::size_t(in.gcount()) < file_sz) {
delete[] sect_data;
return false;
}
// perhaps change "write" interface to accept const char * to
// avoid this copying madness?
mem.write(sect_addr_va, std::string(sect_data, file_sz));
delete[] sect_data;
if (!(prot & Memory::Write))
mem.alloc_protect(sect_addr_va, virt_sz, prot);
in.seekg(pos_orig);
if (in.bad())
return false;
}
}
return true;
}
