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This commit is contained in:
Rui Ueyama 2020-10-10 12:18:11 +09:00
parent b8088b7113
commit 7fbad02cd4
3 changed files with 28 additions and 18 deletions
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7
chibild.h
View File

@ -96,11 +96,11 @@ struct tbb_hash_compare<StringRef> {
class SymbolTable {
public:
void add(StringRef key, StringRef val);
StringRef get(StringRef key);
void add(StringRef key, Symbol sym);
Symbol *get(StringRef key);
private:
typedef tbb::concurrent_hash_map<StringRef, StringRef> MapType;
typedef tbb::concurrent_hash_map<StringRef, Symbol> MapType;
MapType map;
};
@ -133,6 +133,7 @@ private:
std::vector<InputSection> sections;
std::vector<Symbol *> symbols;
std::vector<Symbol> symbol_instances;
int firstGlobal;
bool is_alive = false;
};

25
input_files.cc
View File

@ -34,28 +34,37 @@ void ObjectFile::parse() {
const ELF64LE::Shdr *symtab_sec
= findSection(sections, is_dso ? SHT_DYNSYM : SHT_SYMTAB);
int firstGlobal = symtab_sec->sh_info;
firstGlobal = symtab_sec->sh_info;
ArrayRef<ELF64LE::Sym> elf_syms = CHECK(obj.symbols(symtab_sec), this);
StringRef string_table =
CHECK(obj.getStringTableForSymtab(*symtab_sec, sections), this);
symbol_instances.reserve(elf_syms.size());
symbols.reserve(elf_syms.size());
for (int i = 0; i < elf_syms.size(); i++) {
StringRef name;
if (firstGlobal <= i)
name = CHECK(elf_syms[i].getName(string_table), this);
symbol_instances.push_back({name, this});
}
for (const ELF64LE::Sym &sym : elf_syms.slice(firstGlobal)) {
StringRef name = CHECK(sym.getName(string_table), this);
symbol_table.add(name, name);
llvm::errs() << symbol_table.get(name) << "\n";
}
}
void ObjectFile::register_defined_symbols() {}
void ObjectFile::register_defined_symbols() {
for (int i = 0; i < symbol_instances.size(); i++) {
Symbol &sym = symbol_instances[i];
if (i < firstGlobal) {
symbols.push_back(&sym);
continue;
}
symbol_table.add(sym.name, sym);
llvm::errs() << symbol_table.get(sym.name).name << "\n";
symbols.push_back(&sym);
}
}
StringRef ObjectFile::getFilename() {
return mb.getBufferIdentifier();

14
symtab.cc
View File

@ -1,15 +1,15 @@
#include "chibild.h"
void SymbolTable::add(StringRef key, StringRef val) {
void SymbolTable::add(StringRef name, Symbol sym) {
MapType::accessor acc;
map.insert(acc, key);
acc->second = val;
map.insert(acc, name);
acc->second = sym;
acc.release();
}
StringRef SymbolTable::get(StringRef key) {
Symbol *SymbolTable::get(StringRef name) {
MapType::accessor acc;
if (map.find(acc, key))
return acc->second;
return "";
if (map.find(acc, name))
return &acc->second;
return nullptr;
}