diff options
Diffstat (limited to 'gold/symtab.h')
| -rw-r--r-- | gold/symtab.h | 50 |
1 files changed, 37 insertions, 13 deletions
diff --git a/gold/symtab.h b/gold/symtab.h index f7576b9..49ceb7a 100644 --- a/gold/symtab.h +++ b/gold/symtab.h @@ -422,6 +422,17 @@ class Symbol set_has_warning() { this->has_warning_ = true; } + // Return whether this symbol is defined by a COPY reloc from a + // dynamic object. + bool + is_copied_from_dynobj() const + { return this->is_copied_from_dynobj_; } + + // Mark this symbol as defined by a COPY reloc. + void + set_is_copied_from_dynobj() + { this->is_copied_from_dynobj_ = true; } + protected: // Instances of this class should always be created at a specific // size. @@ -573,6 +584,9 @@ class Symbol bool needs_dynsym_value_ : 1; // True if there is a warning for this symbol. bool has_warning_ : 1; + // True if we are using a COPY reloc for this symbol, so that the + // real definition lives in a dynamic object. + bool is_copied_from_dynobj_ : 1; }; // The parts of a symbol which are size specific. Using a template @@ -870,6 +884,14 @@ class Symbol_table define_symbols(const Layout*, const Target*, int count, const Define_symbol_in_segment*); + // Define SYM using a COPY reloc. POSD is the Output_data where the + // symbol should be defined--typically a .dyn.bss section. VALUE is + // the offset within POSD. + template<int size> + void + define_with_copy_reloc(const Target*, Sized_symbol<size>* sym, + Output_data* posd, uint64_t value); + // Look up a symbol. Symbol* lookup(const char*, const char* version = NULL) const; @@ -915,6 +937,11 @@ class Symbol_table size_t relnum, off_t reloffset) const { this->warnings_.issue_warning(sym, relinfo, relnum, reloffset); } + // SYM is defined using a COPY reloc. Return the dynamic object + // where the original definition was found. + Dynobj* + get_copy_source(const Symbol* sym) const; + // Set the dynamic symbol indexes. INDEX is the index of the first // global dynamic symbol. Pointers to the symbols are stored into // the vector. The names are stored into the Stringpool. This @@ -1089,55 +1116,52 @@ class Symbol_table Symbol_table_eq> Symbol_table_type; // The type of the list of common symbols. - typedef std::vector<Symbol*> Commons_type; + // A map from symbols with COPY relocs to the dynamic objects where + // they are defined. + typedef Unordered_map<const Symbol*, Dynobj*> Copied_symbol_dynobjs; + // We increment this every time we see a new undefined symbol, for // use in archive groups. int saw_undefined_; - // The index of the first global symbol in the output file. unsigned int first_global_index_; - // The file offset within the output symtab section where we should // write the table. off_t offset_; - // The number of global symbols we want to write out. size_t output_count_; - // The file offset of the global dynamic symbols, or 0 if none. off_t dynamic_offset_; - // The index of the first global dynamic symbol. unsigned int first_dynamic_global_index_; - // The number of global dynamic symbols, or 0 if none. off_t dynamic_count_; - // The symbol hash table. Symbol_table_type table_; - // A pool of symbol names. This is used for all global symbols. // Entries in the hash table point into this pool. Stringpool namepool_; - // Forwarding symbols. Unordered_map<const Symbol*, Symbol*> forwarders_; - // Weak aliases. A symbol in this list points to the next alias. // The aliases point to each other in a circular list. Unordered_map<Symbol*, Symbol*> weak_aliases_; - // We don't expect there to be very many common symbols, so we keep // a list of them. When we find a common symbol we add it to this // list. It is possible that by the time we process the list the // symbol is no longer a common symbol. It may also have become a // forwarder. Commons_type commons_; - // Manage symbol warnings. Warnings warnings_; + // When we emit a COPY reloc for a symbol, we define it in an + // Output_data. When it's time to emit version information for it, + // we need to know the dynamic object in which we found the original + // definition. This maps symbols with COPY relocs to the dynamic + // object where they were defined. + Copied_symbol_dynobjs copied_symbol_dynobjs_; }; // We inline get_sized_symbol for efficiency. |