108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
// readsyms.h -- read input file symbols for gold -*- C++ -*-
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#ifndef GOLD_READSYMS_H
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#define GOLD_READSYMS_H
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#include "workqueue.h"
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#include "object.h"
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namespace gold
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{
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class Input_objects;
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class Symbol_table;
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// This Task is responsible for reading the symbols from an input
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// file. This also includes reading the relocations so that we can
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// check for any that require a PLT and/or a GOT. After the data has
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// been read, this queues up another task to actually add the symbols
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// to the symbol table. The tasks are separated because the file
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// reading can occur in parallel but adding the symbols must be done
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// in the order of the input files.
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class Read_symbols : public Task
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{
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public:
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// DIRPATH is the list of directories to search for libraries.
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// INPUT is the file to read. THIS_BLOCKER is used to prevent the
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// associated Add_symbols task from running before the previous one
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// has completed; it will be NULL for the first task. NEXT_BLOCKER
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// is used to block the next input file from adding symbols.
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Read_symbols(const General_options& options, Input_objects* input_objects,
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Symbol_table* symtab, Layout* layout, const Dirsearch& dirpath,
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const Input_argument& input,
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Task_token* this_blocker, Task_token* next_blocker)
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: options_(options), input_objects_(input_objects), symtab_(symtab),
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layout_(layout), dirpath_(dirpath), input_(input),
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this_blocker_(this_blocker), next_blocker_(next_blocker)
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{ }
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~Read_symbols();
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// The standard Task methods.
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Is_runnable_type
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is_runnable(Workqueue*);
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Task_locker*
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locks(Workqueue*);
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void
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run(Workqueue*);
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private:
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const General_options& options_;
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Input_objects* input_objects_;
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Symbol_table* symtab_;
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Layout* layout_;
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const Dirsearch& dirpath_;
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const Input_argument& input_;
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Task_token* this_blocker_;
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Task_token* next_blocker_;
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};
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// This Task handles adding the symbols to the symbol table. These
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// tasks must be run in the same order as the arguments appear on the
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// command line.
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class Add_symbols : public Task
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{
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public:
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// THIS_BLOCKER is used to prevent this task from running before the
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// one for the previous input file. NEXT_BLOCKER is used to prevent
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// the next task from running.
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Add_symbols(Symbol_table* symtab, Layout* layout, Object* object,
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Read_symbols_data* sd, Task_token* this_blocker,
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Task_token* next_blocker)
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: symtab_(symtab), layout_(layout), object_(object), sd_(sd),
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this_blocker_(this_blocker), next_blocker_(next_blocker)
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{ }
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~Add_symbols();
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// The standard Task methods.
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Is_runnable_type
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is_runnable(Workqueue*);
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Task_locker*
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locks(Workqueue*);
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void
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run(Workqueue*);
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private:
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class Add_symbols_locker;
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Symbol_table* symtab_;
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Layout* layout_;
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Object* object_;
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Read_symbols_data* sd_;
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Task_token* this_blocker_;
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Task_token* next_blocker_;
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};
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} // end namespace gold
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#endif // !defined(GOLD_READSYMS_H)
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