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reserve symbol code (unused)

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Kelvin Sherlock 2017-01-21 12:43:18 -05:00
parent 466c90a34e
commit 4e51bd6c51
1 changed files with 23 additions and 0 deletions
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23
link.cpp
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@ -833,6 +833,29 @@ void init() {
}
/*
* add and return an undefined symbol. if known, adds it to the missing set.
* if symbol is already defined, returns it.
*/
symbol &reserve_symbol(const std::string &name, bool open = true) {
auto iter = symbol_map.find(name);
if (iter != symbol_map.end()) return symbols[iter->second];
if (open) undefined_symbols.emplace(name);
else undefined_symbols.erase(name);
symbols.emplace_back();
auto &sym = symbols.back();
sym.name = name;
sym.type = S_UND;
sym.section = symbols.size() - 1;
symbol_map.emplace(name, sym.section);
return sym;
}
void generate_end() {