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bae7f79e ILT |
1 | // readsyms.h -- read input file symbols for gold -*- C++ -*- |
2 | ||
3 | #ifndef GOLD_READSYMS_H | |
4 | #define GOLD_READSYMS_H | |
5 | ||
ead1e424 ILT |
6 | #include <vector> |
7 | ||
bae7f79e ILT |
8 | #include "workqueue.h" |
9 | #include "object.h" | |
10 | ||
11 | namespace gold | |
12 | { | |
13 | ||
54dc6425 ILT |
14 | class Input_objects; |
15 | class Symbol_table; | |
ead1e424 ILT |
16 | class Input_group; |
17 | class Archive; | |
54dc6425 | 18 | |
bae7f79e ILT |
19 | // This Task is responsible for reading the symbols from an input |
20 | // file. This also includes reading the relocations so that we can | |
21 | // check for any that require a PLT and/or a GOT. After the data has | |
22 | // been read, this queues up another task to actually add the symbols | |
23 | // to the symbol table. The tasks are separated because the file | |
24 | // reading can occur in parallel but adding the symbols must be done | |
25 | // in the order of the input files. | |
26 | ||
27 | class Read_symbols : public Task | |
28 | { | |
29 | public: | |
30 | // DIRPATH is the list of directories to search for libraries. | |
ead1e424 ILT |
31 | // INPUT is the file to read. INPUT_GROUP is not NULL if we are in |
32 | // the middle of an input group. THIS_BLOCKER is used to prevent | |
33 | // the associated Add_symbols task from running before the previous | |
34 | // one has completed; it will be NULL for the first task. | |
35 | // NEXT_BLOCKER is used to block the next input file from adding | |
36 | // symbols. | |
54dc6425 | 37 | Read_symbols(const General_options& options, Input_objects* input_objects, |
12e14209 | 38 | Symbol_table* symtab, Layout* layout, const Dirsearch& dirpath, |
ead1e424 | 39 | const Input_argument& input, Input_group* input_group, |
14bfc3f5 | 40 | Task_token* this_blocker, Task_token* next_blocker) |
a2fb1b05 | 41 | : options_(options), input_objects_(input_objects), symtab_(symtab), |
12e14209 | 42 | layout_(layout), dirpath_(dirpath), input_(input), |
ead1e424 ILT |
43 | input_group_(input_group), this_blocker_(this_blocker), |
44 | next_blocker_(next_blocker) | |
bae7f79e ILT |
45 | { } |
46 | ||
47 | ~Read_symbols(); | |
48 | ||
49 | // The standard Task methods. | |
50 | ||
51 | Is_runnable_type | |
52 | is_runnable(Workqueue*); | |
53 | ||
54 | Task_locker* | |
55 | locks(Workqueue*); | |
56 | ||
57 | void | |
58 | run(Workqueue*); | |
59 | ||
60 | private: | |
ead1e424 ILT |
61 | // Handle an archive group. |
62 | void | |
63 | do_group(Workqueue*); | |
64 | ||
bae7f79e | 65 | const General_options& options_; |
54dc6425 | 66 | Input_objects* input_objects_; |
14bfc3f5 | 67 | Symbol_table* symtab_; |
12e14209 | 68 | Layout* layout_; |
bae7f79e ILT |
69 | const Dirsearch& dirpath_; |
70 | const Input_argument& input_; | |
ead1e424 | 71 | Input_group* input_group_; |
bae7f79e ILT |
72 | Task_token* this_blocker_; |
73 | Task_token* next_blocker_; | |
74 | }; | |
75 | ||
76 | // This Task handles adding the symbols to the symbol table. These | |
77 | // tasks must be run in the same order as the arguments appear on the | |
78 | // command line. | |
79 | ||
80 | class Add_symbols : public Task | |
81 | { | |
82 | public: | |
83 | // THIS_BLOCKER is used to prevent this task from running before the | |
84 | // one for the previous input file. NEXT_BLOCKER is used to prevent | |
85 | // the next task from running. | |
ead1e424 ILT |
86 | Add_symbols(Input_objects* input_objects, Symbol_table* symtab, |
87 | Layout* layout, Object* object, Read_symbols_data* sd, | |
88 | Task_token* this_blocker, Task_token* next_blocker) | |
89 | : input_objects_(input_objects), symtab_(symtab), layout_(layout), | |
90 | object_(object), sd_(sd), this_blocker_(this_blocker), | |
91 | next_blocker_(next_blocker) | |
bae7f79e ILT |
92 | { } |
93 | ||
94 | ~Add_symbols(); | |
95 | ||
96 | // The standard Task methods. | |
97 | ||
98 | Is_runnable_type | |
99 | is_runnable(Workqueue*); | |
100 | ||
101 | Task_locker* | |
102 | locks(Workqueue*); | |
103 | ||
104 | void | |
105 | run(Workqueue*); | |
106 | ||
107 | private: | |
a2fb1b05 ILT |
108 | class Add_symbols_locker; |
109 | ||
ead1e424 | 110 | Input_objects* input_objects_; |
14bfc3f5 | 111 | Symbol_table* symtab_; |
12e14209 | 112 | Layout* layout_; |
bae7f79e | 113 | Object* object_; |
12e14209 | 114 | Read_symbols_data* sd_; |
bae7f79e ILT |
115 | Task_token* this_blocker_; |
116 | Task_token* next_blocker_; | |
117 | }; | |
118 | ||
ead1e424 ILT |
119 | // This class is used to track the archives in a group. |
120 | ||
121 | class Input_group | |
122 | { | |
123 | public: | |
124 | typedef std::vector<Archive*> Archives; | |
125 | typedef Archives::const_iterator const_iterator; | |
126 | ||
127 | Input_group() | |
128 | : archives_() | |
129 | { } | |
130 | ||
131 | // Add an archive to the group. | |
132 | void | |
133 | add_archive(Archive* arch) | |
134 | { this->archives_.push_back(arch); } | |
135 | ||
136 | // Loop over the archives in the group. | |
137 | ||
138 | const_iterator | |
139 | begin() const | |
140 | { return this->archives_.begin(); } | |
141 | ||
142 | const_iterator | |
143 | end() const | |
144 | { return this->archives_.end(); } | |
145 | ||
146 | private: | |
147 | Archives archives_; | |
148 | }; | |
149 | ||
150 | // This class is used to finish up handling a group. It is just a | |
151 | // closure. | |
152 | ||
153 | class Finish_group : public Task | |
154 | { | |
155 | public: | |
156 | Finish_group(Input_objects* input_objects, Symbol_table* symtab, | |
157 | Layout* layout, Input_group* input_group, | |
158 | int saw_undefined, Task_token* this_blocker, | |
159 | Task_token* next_blocker) | |
160 | : input_objects_(input_objects), symtab_(symtab), layout_(layout), | |
161 | input_group_(input_group), saw_undefined_(saw_undefined), | |
162 | this_blocker_(this_blocker), next_blocker_(next_blocker) | |
163 | { } | |
164 | ||
165 | ~Finish_group(); | |
166 | ||
167 | // The standard Task methods. | |
168 | ||
169 | Is_runnable_type | |
170 | is_runnable(Workqueue*); | |
171 | ||
172 | Task_locker* | |
173 | locks(Workqueue*); | |
174 | ||
175 | void | |
176 | run(Workqueue*); | |
177 | ||
178 | private: | |
179 | Input_objects* input_objects_; | |
180 | Symbol_table* symtab_; | |
181 | Layout* layout_; | |
182 | Input_group* input_group_; | |
183 | int saw_undefined_; | |
184 | Task_token* this_blocker_; | |
185 | Task_token* next_blocker_; | |
186 | }; | |
187 | ||
bae7f79e ILT |
188 | } // end namespace gold |
189 | ||
190 | #endif // !defined(GOLD_READSYMS_H) |