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0e879927 ILT |
1 | // inremental.cc -- incremental linking support for gold |
2 | ||
b3adc24a | 3 | // Copyright (C) 2009-2020 Free Software Foundation, Inc. |
0e879927 ILT |
4 | // Written by Mikolaj Zalewski <mikolajz@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | #include "gold.h" | |
c549a694 | 24 | |
26d3c67d | 25 | #include <set> |
c549a694 | 26 | #include <cstdarg> |
a81ee015 | 27 | #include "libiberty.h" |
c549a694 | 28 | |
0e879927 | 29 | #include "elfcpp.h" |
cdc29364 | 30 | #include "options.h" |
3ce2c28e | 31 | #include "output.h" |
09ec0418 | 32 | #include "symtab.h" |
3ce2c28e | 33 | #include "incremental.h" |
98fa85cb | 34 | #include "archive.h" |
cdc29364 | 35 | #include "object.h" |
c549a694 | 36 | #include "target-select.h" |
0e70b911 | 37 | #include "target.h" |
cdc29364 CC |
38 | #include "fileread.h" |
39 | #include "script.h" | |
0e879927 | 40 | |
0e879927 ILT |
41 | namespace gold { |
42 | ||
f038d496 CC |
43 | // Version number for the .gnu_incremental_inputs section. |
44 | // Version 1 was the initial checkin. | |
45 | // Version 2 adds some padding to ensure 8-byte alignment where necessary. | |
46 | const unsigned int INCREMENTAL_LINK_VERSION = 2; | |
0e879927 | 47 | |
09ec0418 CC |
48 | // This class manages the .gnu_incremental_inputs section, which holds |
49 | // the header information, a directory of input files, and separate | |
50 | // entries for each input file. | |
51 | ||
52 | template<int size, bool big_endian> | |
53 | class Output_section_incremental_inputs : public Output_section_data | |
54 | { | |
55 | public: | |
56 | Output_section_incremental_inputs(const Incremental_inputs* inputs, | |
57 | const Symbol_table* symtab) | |
58 | : Output_section_data(size / 8), inputs_(inputs), symtab_(symtab) | |
59 | { } | |
60 | ||
61 | protected: | |
cdc29364 CC |
62 | // This is called to update the section size prior to assigning |
63 | // the address and file offset. | |
64 | void | |
65 | update_data_size() | |
66 | { this->set_final_data_size(); } | |
67 | ||
09ec0418 CC |
68 | // Set the final data size. |
69 | void | |
70 | set_final_data_size(); | |
71 | ||
72 | // Write the data to the file. | |
73 | void | |
74 | do_write(Output_file*); | |
75 | ||
76 | // Write to a map file. | |
77 | void | |
78 | do_print_to_mapfile(Mapfile* mapfile) const | |
79 | { mapfile->print_output_data(this, _("** incremental_inputs")); } | |
80 | ||
81 | private: | |
82 | // Write the section header. | |
83 | unsigned char* | |
84 | write_header(unsigned char* pov, unsigned int input_file_count, | |
85 | section_offset_type command_line_offset); | |
86 | ||
87 | // Write the input file entries. | |
88 | unsigned char* | |
89 | write_input_files(unsigned char* oview, unsigned char* pov, | |
90 | Stringpool* strtab); | |
91 | ||
92 | // Write the supplemental information blocks. | |
93 | unsigned char* | |
94 | write_info_blocks(unsigned char* oview, unsigned char* pov, | |
95 | Stringpool* strtab, unsigned int* global_syms, | |
96 | unsigned int global_sym_count); | |
97 | ||
98 | // Write the contents of the .gnu_incremental_symtab section. | |
99 | void | |
100 | write_symtab(unsigned char* pov, unsigned int* global_syms, | |
101 | unsigned int global_sym_count); | |
102 | ||
0e70b911 CC |
103 | // Write the contents of the .gnu_incremental_got_plt section. |
104 | void | |
105 | write_got_plt(unsigned char* pov, off_t view_size); | |
106 | ||
09ec0418 CC |
107 | // Typedefs for writing the data to the output sections. |
108 | typedef elfcpp::Swap<size, big_endian> Swap; | |
109 | typedef elfcpp::Swap<16, big_endian> Swap16; | |
110 | typedef elfcpp::Swap<32, big_endian> Swap32; | |
111 | typedef elfcpp::Swap<64, big_endian> Swap64; | |
112 | ||
113 | // Sizes of various structures. | |
114 | static const int sizeof_addr = size / 8; | |
f038d496 CC |
115 | static const int header_size = |
116 | Incremental_inputs_reader<size, big_endian>::header_size; | |
117 | static const int input_entry_size = | |
118 | Incremental_inputs_reader<size, big_endian>::input_entry_size; | |
119 | static const unsigned int object_info_size = | |
120 | Incremental_inputs_reader<size, big_endian>::object_info_size; | |
121 | static const unsigned int input_section_entry_size = | |
122 | Incremental_inputs_reader<size, big_endian>::input_section_entry_size; | |
123 | static const unsigned int global_sym_entry_size = | |
124 | Incremental_inputs_reader<size, big_endian>::global_sym_entry_size; | |
125 | static const unsigned int incr_reloc_size = | |
126 | Incremental_relocs_reader<size, big_endian>::reloc_size; | |
09ec0418 CC |
127 | |
128 | // The Incremental_inputs object. | |
129 | const Incremental_inputs* inputs_; | |
130 | ||
131 | // The symbol table. | |
132 | const Symbol_table* symtab_; | |
133 | }; | |
134 | ||
c549a694 ILT |
135 | // Inform the user why we don't do an incremental link. Not called in |
136 | // the obvious case of missing output file. TODO: Is this helpful? | |
137 | ||
138 | void | |
139 | vexplain_no_incremental(const char* format, va_list args) | |
140 | { | |
141 | char* buf = NULL; | |
142 | if (vasprintf(&buf, format, args) < 0) | |
143 | gold_nomem(); | |
144 | gold_info(_("the link might take longer: " | |
2e702c99 | 145 | "cannot perform incremental link: %s"), buf); |
c549a694 ILT |
146 | free(buf); |
147 | } | |
148 | ||
149 | void | |
150 | explain_no_incremental(const char* format, ...) | |
151 | { | |
152 | va_list args; | |
153 | va_start(args, format); | |
154 | vexplain_no_incremental(format, args); | |
155 | va_end(args); | |
156 | } | |
157 | ||
158 | // Report an error. | |
159 | ||
160 | void | |
161 | Incremental_binary::error(const char* format, ...) const | |
162 | { | |
163 | va_list args; | |
164 | va_start(args, format); | |
165 | // Current code only checks if the file can be used for incremental linking, | |
166 | // so errors shouldn't fail the build, but only result in a fallback to a | |
167 | // full build. | |
168 | // TODO: when we implement incremental editing of the file, we may need a | |
169 | // flag that will cause errors to be treated seriously. | |
170 | vexplain_no_incremental(format, args); | |
171 | va_end(args); | |
172 | } | |
173 | ||
0c9350c8 | 174 | // Return TRUE if a section of type SH_TYPE can be updated in place |
aa06ae28 | 175 | // during an incremental update. We can update sections of type PROGBITS, |
bce5a025 CC |
176 | // NOBITS, INIT_ARRAY, FINI_ARRAY, PREINIT_ARRAY, NOTE, and |
177 | // (processor-specific) unwind sections. All others will be regenerated. | |
aa06ae28 CC |
178 | |
179 | bool | |
180 | can_incremental_update(unsigned int sh_type) | |
181 | { | |
182 | return (sh_type == elfcpp::SHT_PROGBITS | |
183 | || sh_type == elfcpp::SHT_NOBITS | |
184 | || sh_type == elfcpp::SHT_INIT_ARRAY | |
185 | || sh_type == elfcpp::SHT_FINI_ARRAY | |
186 | || sh_type == elfcpp::SHT_PREINIT_ARRAY | |
bce5a025 CC |
187 | || sh_type == elfcpp::SHT_NOTE |
188 | || sh_type == parameters->target().unwind_section_type()); | |
aa06ae28 CC |
189 | } |
190 | ||
09ec0418 CC |
191 | // Find the .gnu_incremental_inputs section and related sections. |
192 | ||
c549a694 ILT |
193 | template<int size, bool big_endian> |
194 | bool | |
b961d0d7 | 195 | Sized_incremental_binary<size, big_endian>::find_incremental_inputs_sections( |
09ec0418 CC |
196 | unsigned int* p_inputs_shndx, |
197 | unsigned int* p_symtab_shndx, | |
198 | unsigned int* p_relocs_shndx, | |
0e70b911 | 199 | unsigned int* p_got_plt_shndx, |
09ec0418 | 200 | unsigned int* p_strtab_shndx) |
c549a694 | 201 | { |
09ec0418 CC |
202 | unsigned int inputs_shndx = |
203 | this->elf_file_.find_section_by_type(elfcpp::SHT_GNU_INCREMENTAL_INPUTS); | |
204 | if (inputs_shndx == elfcpp::SHN_UNDEF) // Not found. | |
205 | return false; | |
206 | ||
207 | unsigned int symtab_shndx = | |
208 | this->elf_file_.find_section_by_type(elfcpp::SHT_GNU_INCREMENTAL_SYMTAB); | |
209 | if (symtab_shndx == elfcpp::SHN_UNDEF) // Not found. | |
210 | return false; | |
211 | if (this->elf_file_.section_link(symtab_shndx) != inputs_shndx) | |
c549a694 | 212 | return false; |
09ec0418 CC |
213 | |
214 | unsigned int relocs_shndx = | |
215 | this->elf_file_.find_section_by_type(elfcpp::SHT_GNU_INCREMENTAL_RELOCS); | |
216 | if (relocs_shndx == elfcpp::SHN_UNDEF) // Not found. | |
217 | return false; | |
218 | if (this->elf_file_.section_link(relocs_shndx) != inputs_shndx) | |
219 | return false; | |
220 | ||
0e70b911 CC |
221 | unsigned int got_plt_shndx = |
222 | this->elf_file_.find_section_by_type(elfcpp::SHT_GNU_INCREMENTAL_GOT_PLT); | |
223 | if (got_plt_shndx == elfcpp::SHN_UNDEF) // Not found. | |
224 | return false; | |
225 | if (this->elf_file_.section_link(got_plt_shndx) != inputs_shndx) | |
226 | return false; | |
227 | ||
09ec0418 CC |
228 | unsigned int strtab_shndx = this->elf_file_.section_link(inputs_shndx); |
229 | if (strtab_shndx == elfcpp::SHN_UNDEF | |
230 | || strtab_shndx > this->elf_file_.shnum() | |
231 | || this->elf_file_.section_type(strtab_shndx) != elfcpp::SHT_STRTAB) | |
232 | return false; | |
233 | ||
234 | if (p_inputs_shndx != NULL) | |
235 | *p_inputs_shndx = inputs_shndx; | |
236 | if (p_symtab_shndx != NULL) | |
237 | *p_symtab_shndx = symtab_shndx; | |
238 | if (p_relocs_shndx != NULL) | |
239 | *p_relocs_shndx = relocs_shndx; | |
0e70b911 CC |
240 | if (p_got_plt_shndx != NULL) |
241 | *p_got_plt_shndx = got_plt_shndx; | |
09ec0418 CC |
242 | if (p_strtab_shndx != NULL) |
243 | *p_strtab_shndx = strtab_shndx; | |
c549a694 ILT |
244 | return true; |
245 | } | |
246 | ||
b961d0d7 | 247 | // Set up the readers into the incremental info sections. |
09ec0418 | 248 | |
c4aa1e2d | 249 | template<int size, bool big_endian> |
b961d0d7 CC |
250 | void |
251 | Sized_incremental_binary<size, big_endian>::setup_readers() | |
c4aa1e2d | 252 | { |
09ec0418 CC |
253 | unsigned int inputs_shndx; |
254 | unsigned int symtab_shndx; | |
255 | unsigned int relocs_shndx; | |
b961d0d7 | 256 | unsigned int got_plt_shndx; |
c4aa1e2d | 257 | unsigned int strtab_shndx; |
c4aa1e2d | 258 | |
b961d0d7 CC |
259 | if (!this->find_incremental_inputs_sections(&inputs_shndx, &symtab_shndx, |
260 | &relocs_shndx, &got_plt_shndx, | |
261 | &strtab_shndx)) | |
262 | return; | |
c4aa1e2d | 263 | |
09ec0418 CC |
264 | Location inputs_location(this->elf_file_.section_contents(inputs_shndx)); |
265 | Location symtab_location(this->elf_file_.section_contents(symtab_shndx)); | |
266 | Location relocs_location(this->elf_file_.section_contents(relocs_shndx)); | |
b961d0d7 | 267 | Location got_plt_location(this->elf_file_.section_contents(got_plt_shndx)); |
c4aa1e2d | 268 | Location strtab_location(this->elf_file_.section_contents(strtab_shndx)); |
09ec0418 | 269 | |
b961d0d7 CC |
270 | View inputs_view = this->view(inputs_location); |
271 | View symtab_view = this->view(symtab_location); | |
272 | View relocs_view = this->view(relocs_location); | |
273 | View got_plt_view = this->view(got_plt_location); | |
274 | View strtab_view = this->view(strtab_location); | |
09ec0418 | 275 | |
c4aa1e2d | 276 | elfcpp::Elf_strtab strtab(strtab_view.data(), strtab_location.data_size); |
c4aa1e2d | 277 | |
b961d0d7 CC |
278 | this->inputs_reader_ = |
279 | Incremental_inputs_reader<size, big_endian>(inputs_view.data(), strtab); | |
280 | this->symtab_reader_ = | |
281 | Incremental_symtab_reader<big_endian>(symtab_view.data(), | |
282 | symtab_location.data_size); | |
283 | this->relocs_reader_ = | |
284 | Incremental_relocs_reader<size, big_endian>(relocs_view.data(), | |
285 | relocs_location.data_size); | |
286 | this->got_plt_reader_ = | |
287 | Incremental_got_plt_reader<big_endian>(got_plt_view.data()); | |
cdc29364 | 288 | |
4829d394 CC |
289 | // Find the main symbol table. |
290 | unsigned int main_symtab_shndx = | |
291 | this->elf_file_.find_section_by_type(elfcpp::SHT_SYMTAB); | |
292 | gold_assert(main_symtab_shndx != elfcpp::SHN_UNDEF); | |
293 | this->main_symtab_loc_ = this->elf_file_.section_contents(main_symtab_shndx); | |
294 | ||
295 | // Find the main symbol string table. | |
296 | unsigned int main_strtab_shndx = | |
297 | this->elf_file_.section_link(main_symtab_shndx); | |
298 | gold_assert(main_strtab_shndx != elfcpp::SHN_UNDEF | |
2e702c99 | 299 | && main_strtab_shndx < this->elf_file_.shnum()); |
4829d394 CC |
300 | this->main_strtab_loc_ = this->elf_file_.section_contents(main_strtab_shndx); |
301 | ||
cdc29364 CC |
302 | // Walk the list of input files (a) to setup an Input_reader for each |
303 | // input file, and (b) to record maps of files added from archive | |
304 | // libraries and scripts. | |
305 | Incremental_inputs_reader<size, big_endian>& inputs = this->inputs_reader_; | |
306 | unsigned int count = inputs.input_file_count(); | |
6fa2a40b | 307 | this->input_objects_.resize(count); |
cdc29364 CC |
308 | this->input_entry_readers_.reserve(count); |
309 | this->library_map_.resize(count); | |
310 | this->script_map_.resize(count); | |
311 | for (unsigned int i = 0; i < count; i++) | |
312 | { | |
313 | Input_entry_reader input_file = inputs.input_file(i); | |
c3c5e486 | 314 | #if __cplusplus >= 2001103L |
a1893a82 | 315 | this->input_entry_readers_.emplace_back(input_file); |
c3c5e486 CC |
316 | #else |
317 | this->input_entry_readers_.push_back(Sized_input_reader(input_file)); | |
a1893a82 | 318 | #endif |
cdc29364 CC |
319 | switch (input_file.type()) |
320 | { | |
321 | case INCREMENTAL_INPUT_OBJECT: | |
322 | case INCREMENTAL_INPUT_ARCHIVE_MEMBER: | |
323 | case INCREMENTAL_INPUT_SHARED_LIBRARY: | |
324 | // No special treatment necessary. | |
325 | break; | |
326 | case INCREMENTAL_INPUT_ARCHIVE: | |
327 | { | |
328 | Incremental_library* lib = | |
2e702c99 | 329 | new Incremental_library(input_file.filename(), i, |
cdc29364 CC |
330 | &this->input_entry_readers_[i]); |
331 | this->library_map_[i] = lib; | |
332 | unsigned int member_count = input_file.get_member_count(); | |
333 | for (unsigned int j = 0; j < member_count; j++) | |
334 | { | |
335 | int member_offset = input_file.get_member_offset(j); | |
336 | int member_index = inputs.input_file_index(member_offset); | |
337 | this->library_map_[member_index] = lib; | |
338 | } | |
339 | } | |
340 | break; | |
341 | case INCREMENTAL_INPUT_SCRIPT: | |
342 | { | |
e24719f6 | 343 | Script_info* script = new Script_info(input_file.filename(), i); |
cdc29364 CC |
344 | this->script_map_[i] = script; |
345 | unsigned int object_count = input_file.get_object_count(); | |
346 | for (unsigned int j = 0; j < object_count; j++) | |
347 | { | |
348 | int object_offset = input_file.get_object_offset(j); | |
349 | int object_index = inputs.input_file_index(object_offset); | |
350 | this->script_map_[object_index] = script; | |
351 | } | |
352 | } | |
353 | break; | |
354 | default: | |
355 | gold_unreachable(); | |
356 | } | |
357 | } | |
358 | ||
94a3fc8b CC |
359 | // Initialize the map of global symbols. |
360 | unsigned int nglobals = this->symtab_reader_.symbol_count(); | |
361 | this->symbol_map_.resize(nglobals); | |
362 | ||
b961d0d7 CC |
363 | this->has_incremental_info_ = true; |
364 | } | |
365 | ||
cdc29364 CC |
366 | // Walk the list of input files given on the command line, and build |
367 | // a direct map of file index to the corresponding input argument. | |
368 | ||
369 | void | |
370 | check_input_args(std::vector<const Input_argument*>& input_args_map, | |
371 | Input_arguments::const_iterator begin, | |
372 | Input_arguments::const_iterator end) | |
373 | { | |
374 | for (Input_arguments::const_iterator p = begin; | |
375 | p != end; | |
376 | ++p) | |
377 | { | |
378 | if (p->is_group()) | |
379 | { | |
380 | const Input_file_group* group = p->group(); | |
381 | check_input_args(input_args_map, group->begin(), group->end()); | |
382 | } | |
383 | else if (p->is_lib()) | |
384 | { | |
385 | const Input_file_lib* lib = p->lib(); | |
386 | check_input_args(input_args_map, lib->begin(), lib->end()); | |
387 | } | |
388 | else | |
2e702c99 RM |
389 | { |
390 | gold_assert(p->is_file()); | |
391 | unsigned int arg_serial = p->file().arg_serial(); | |
392 | if (arg_serial > 0) | |
cdc29364 CC |
393 | { |
394 | gold_assert(arg_serial <= input_args_map.size()); | |
395 | gold_assert(input_args_map[arg_serial - 1] == 0); | |
396 | input_args_map[arg_serial - 1] = &*p; | |
397 | } | |
2e702c99 | 398 | } |
cdc29364 CC |
399 | } |
400 | } | |
401 | ||
b961d0d7 CC |
402 | // Determine whether an incremental link based on the existing output file |
403 | // can be done. | |
404 | ||
405 | template<int size, bool big_endian> | |
406 | bool | |
407 | Sized_incremental_binary<size, big_endian>::do_check_inputs( | |
cdc29364 | 408 | const Command_line& cmdline, |
b961d0d7 CC |
409 | Incremental_inputs* incremental_inputs) |
410 | { | |
cdc29364 CC |
411 | Incremental_inputs_reader<size, big_endian>& inputs = this->inputs_reader_; |
412 | ||
b961d0d7 CC |
413 | if (!this->has_incremental_info_) |
414 | { | |
415 | explain_no_incremental(_("no incremental data from previous build")); | |
416 | return false; | |
417 | } | |
c4aa1e2d | 418 | |
cdc29364 | 419 | if (inputs.version() != INCREMENTAL_LINK_VERSION) |
c4aa1e2d | 420 | { |
09ec0418 | 421 | explain_no_incremental(_("different version of incremental build data")); |
c4aa1e2d ILT |
422 | return false; |
423 | } | |
424 | ||
cdc29364 | 425 | if (incremental_inputs->command_line() != inputs.command_line()) |
c4aa1e2d | 426 | { |
8f7c81e8 | 427 | gold_debug(DEBUG_INCREMENTAL, |
2e702c99 RM |
428 | "old command line: %s", |
429 | inputs.command_line()); | |
8f7c81e8 | 430 | gold_debug(DEBUG_INCREMENTAL, |
2e702c99 RM |
431 | "new command line: %s", |
432 | incremental_inputs->command_line().c_str()); | |
c4aa1e2d ILT |
433 | explain_no_incremental(_("command line changed")); |
434 | return false; | |
435 | } | |
436 | ||
cdc29364 CC |
437 | // Walk the list of input files given on the command line, and build |
438 | // a direct map of argument serial numbers to the corresponding input | |
439 | // arguments. | |
440 | this->input_args_map_.resize(cmdline.number_of_input_files()); | |
441 | check_input_args(this->input_args_map_, cmdline.begin(), cmdline.end()); | |
442 | ||
443 | // Walk the list of input files to check for conditions that prevent | |
444 | // an incremental update link. | |
445 | unsigned int count = inputs.input_file_count(); | |
446 | for (unsigned int i = 0; i < count; i++) | |
447 | { | |
448 | Input_entry_reader input_file = inputs.input_file(i); | |
449 | switch (input_file.type()) | |
450 | { | |
451 | case INCREMENTAL_INPUT_OBJECT: | |
452 | case INCREMENTAL_INPUT_ARCHIVE_MEMBER: | |
453 | case INCREMENTAL_INPUT_SHARED_LIBRARY: | |
454 | case INCREMENTAL_INPUT_ARCHIVE: | |
455 | // No special treatment necessary. | |
456 | break; | |
457 | case INCREMENTAL_INPUT_SCRIPT: | |
458 | if (this->do_file_has_changed(i)) | |
459 | { | |
460 | explain_no_incremental(_("%s: script file changed"), | |
461 | input_file.filename()); | |
462 | return false; | |
463 | } | |
464 | break; | |
465 | default: | |
466 | gold_unreachable(); | |
467 | } | |
468 | } | |
469 | ||
c4aa1e2d ILT |
470 | return true; |
471 | } | |
472 | ||
cdc29364 | 473 | // Return TRUE if input file N has changed since the last incremental link. |
b961d0d7 CC |
474 | |
475 | template<int size, bool big_endian> | |
476 | bool | |
cdc29364 CC |
477 | Sized_incremental_binary<size, big_endian>::do_file_has_changed( |
478 | unsigned int n) const | |
b961d0d7 | 479 | { |
cdc29364 CC |
480 | Input_entry_reader input_file = this->inputs_reader_.input_file(n); |
481 | Incremental_disposition disp = INCREMENTAL_CHECK; | |
e24719f6 CC |
482 | |
483 | // For files named in scripts, find the file that was actually named | |
484 | // on the command line, so that we can get the incremental disposition | |
485 | // flag. | |
486 | Script_info* script = this->get_script_info(n); | |
487 | if (script != NULL) | |
488 | n = script->input_file_index(); | |
489 | ||
cdc29364 CC |
490 | const Input_argument* input_argument = this->get_input_argument(n); |
491 | if (input_argument != NULL) | |
492 | disp = input_argument->file().options().incremental_disposition(); | |
b961d0d7 | 493 | |
221597a5 CC |
494 | // For files at the beginning of the command line (i.e., those added |
495 | // implicitly by gcc), check whether the --incremental-startup-unchanged | |
496 | // option was used. | |
497 | if (disp == INCREMENTAL_STARTUP) | |
498 | disp = parameters->options().incremental_startup_disposition(); | |
499 | ||
b961d0d7 | 500 | if (disp != INCREMENTAL_CHECK) |
cdc29364 | 501 | return disp == INCREMENTAL_CHANGED; |
b961d0d7 | 502 | |
cdc29364 CC |
503 | const char* filename = input_file.filename(); |
504 | Timespec old_mtime = input_file.get_mtime(); | |
505 | Timespec new_mtime; | |
506 | if (!get_mtime(filename, &new_mtime)) | |
507 | { | |
508 | // If we can't open get the current modification time, assume it has | |
509 | // changed. If the file doesn't exist, we'll issue an error when we | |
510 | // try to open it later. | |
511 | return true; | |
512 | } | |
513 | ||
514 | if (new_mtime.seconds > old_mtime.seconds) | |
515 | return true; | |
516 | if (new_mtime.seconds == old_mtime.seconds | |
517 | && new_mtime.nanoseconds > old_mtime.nanoseconds) | |
518 | return true; | |
b961d0d7 CC |
519 | return false; |
520 | } | |
521 | ||
cdc29364 CC |
522 | // Initialize the layout of the output file based on the existing |
523 | // output file. | |
524 | ||
525 | template<int size, bool big_endian> | |
526 | void | |
527 | Sized_incremental_binary<size, big_endian>::do_init_layout(Layout* layout) | |
528 | { | |
529 | typedef elfcpp::Shdr<size, big_endian> Shdr; | |
530 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
531 | ||
532 | // Get views of the section headers and the section string table. | |
533 | const off_t shoff = this->elf_file_.shoff(); | |
534 | const unsigned int shnum = this->elf_file_.shnum(); | |
535 | const unsigned int shstrndx = this->elf_file_.shstrndx(); | |
536 | Location shdrs_location(shoff, shnum * shdr_size); | |
537 | Location shstrndx_location(this->elf_file_.section_contents(shstrndx)); | |
538 | View shdrs_view = this->view(shdrs_location); | |
539 | View shstrndx_view = this->view(shstrndx_location); | |
540 | elfcpp::Elf_strtab shstrtab(shstrndx_view.data(), | |
541 | shstrndx_location.data_size); | |
542 | ||
543 | layout->set_incremental_base(this); | |
544 | ||
545 | // Initialize the layout. | |
546 | this->section_map_.resize(shnum); | |
547 | const unsigned char* pshdr = shdrs_view.data() + shdr_size; | |
548 | for (unsigned int i = 1; i < shnum; i++) | |
549 | { | |
550 | Shdr shdr(pshdr); | |
551 | const char* name; | |
552 | if (!shstrtab.get_c_string(shdr.get_sh_name(), &name)) | |
2e702c99 | 553 | name = NULL; |
cdc29364 CC |
554 | gold_debug(DEBUG_INCREMENTAL, |
555 | "Output section: %2d %08lx %08lx %08lx %3d %s", | |
2e702c99 RM |
556 | i, |
557 | static_cast<long>(shdr.get_sh_addr()), | |
558 | static_cast<long>(shdr.get_sh_offset()), | |
559 | static_cast<long>(shdr.get_sh_size()), | |
560 | shdr.get_sh_type(), name ? name : "<null>"); | |
cdc29364 CC |
561 | this->section_map_[i] = layout->init_fixed_output_section(name, shdr); |
562 | pshdr += shdr_size; | |
563 | } | |
564 | } | |
565 | ||
566 | // Mark regions of the input file that must be kept unchanged. | |
567 | ||
568 | template<int size, bool big_endian> | |
569 | void | |
570 | Sized_incremental_binary<size, big_endian>::do_reserve_layout( | |
571 | unsigned int input_file_index) | |
572 | { | |
26d3c67d CC |
573 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
574 | ||
cdc29364 CC |
575 | Input_entry_reader input_file = |
576 | this->inputs_reader_.input_file(input_file_index); | |
577 | ||
578 | if (input_file.type() == INCREMENTAL_INPUT_SHARED_LIBRARY) | |
26d3c67d CC |
579 | { |
580 | // Reserve the BSS space used for COPY relocations. | |
581 | unsigned int nsyms = input_file.get_global_symbol_count(); | |
582 | Incremental_binary::View symtab_view(NULL); | |
583 | unsigned int symtab_count; | |
584 | elfcpp::Elf_strtab strtab(NULL, 0); | |
585 | this->get_symtab_view(&symtab_view, &symtab_count, &strtab); | |
586 | for (unsigned int i = 0; i < nsyms; ++i) | |
587 | { | |
588 | bool is_def; | |
589 | bool is_copy; | |
2e702c99 | 590 | unsigned int output_symndx = |
26d3c67d CC |
591 | input_file.get_output_symbol_index(i, &is_def, &is_copy); |
592 | if (is_copy) | |
593 | { | |
594 | const unsigned char* sym_p = (symtab_view.data() | |
595 | + output_symndx * sym_size); | |
596 | elfcpp::Sym<size, big_endian> gsym(sym_p); | |
597 | unsigned int shndx = gsym.get_st_shndx(); | |
598 | if (shndx < 1 || shndx >= this->section_map_.size()) | |
2e702c99 | 599 | continue; |
26d3c67d CC |
600 | Output_section* os = this->section_map_[shndx]; |
601 | off_t offset = gsym.get_st_value() - os->address(); | |
602 | os->reserve(offset, gsym.get_st_size()); | |
603 | gold_debug(DEBUG_INCREMENTAL, | |
604 | "Reserve for COPY reloc: %s, off %d, size %d", | |
605 | os->name(), | |
606 | static_cast<int>(offset), | |
607 | static_cast<int>(gsym.get_st_size())); | |
608 | } | |
609 | } | |
610 | return; | |
611 | } | |
cdc29364 CC |
612 | |
613 | unsigned int shnum = input_file.get_input_section_count(); | |
614 | for (unsigned int i = 0; i < shnum; i++) | |
615 | { | |
616 | typename Input_entry_reader::Input_section_info sect = | |
2e702c99 | 617 | input_file.get_input_section(i); |
cdc29364 | 618 | if (sect.output_shndx == 0 || sect.sh_offset == -1) |
2e702c99 | 619 | continue; |
cdc29364 CC |
620 | Output_section* os = this->section_map_[sect.output_shndx]; |
621 | gold_assert(os != NULL); | |
622 | os->reserve(sect.sh_offset, sect.sh_size); | |
623 | } | |
624 | } | |
625 | ||
4829d394 CC |
626 | // Process the GOT and PLT entries from the existing output file. |
627 | ||
628 | template<int size, bool big_endian> | |
629 | void | |
630 | Sized_incremental_binary<size, big_endian>::do_process_got_plt( | |
631 | Symbol_table* symtab, | |
632 | Layout* layout) | |
633 | { | |
634 | Incremental_got_plt_reader<big_endian> got_plt_reader(this->got_plt_reader()); | |
635 | Sized_target<size, big_endian>* target = | |
636 | parameters->sized_target<size, big_endian>(); | |
637 | ||
638 | // Get the number of symbols in the main symbol table and in the | |
639 | // incremental symbol table. The difference between the two counts | |
640 | // is the index of the first forced-local or global symbol in the | |
641 | // main symbol table. | |
642 | unsigned int symtab_count = | |
643 | this->main_symtab_loc_.data_size / elfcpp::Elf_sizes<size>::sym_size; | |
644 | unsigned int isym_count = this->symtab_reader_.symbol_count(); | |
645 | unsigned int first_global = symtab_count - isym_count; | |
646 | ||
647 | // Tell the target how big the GOT and PLT sections are. | |
648 | unsigned int got_count = got_plt_reader.get_got_entry_count(); | |
649 | unsigned int plt_count = got_plt_reader.get_plt_entry_count(); | |
dd74ae06 | 650 | Output_data_got_base* got = |
4829d394 CC |
651 | target->init_got_plt_for_update(symtab, layout, got_count, plt_count); |
652 | ||
653 | // Read the GOT entries from the base file and build the outgoing GOT. | |
654 | for (unsigned int i = 0; i < got_count; ++i) | |
655 | { | |
656 | unsigned int got_type = got_plt_reader.get_got_type(i); | |
657 | if ((got_type & 0x7f) == 0x7f) | |
658 | { | |
659 | // This is the second entry of a pair. | |
660 | got->reserve_slot(i); | |
661 | continue; | |
662 | } | |
6fa2a40b | 663 | unsigned int symndx = got_plt_reader.get_got_symndx(i); |
4829d394 CC |
664 | if (got_type & 0x80) |
665 | { | |
6fa2a40b CC |
666 | // This is an entry for a local symbol. Ignore this entry if |
667 | // the object file was replaced. | |
668 | unsigned int input_index = got_plt_reader.get_got_input_index(i); | |
4829d394 CC |
669 | gold_debug(DEBUG_INCREMENTAL, |
670 | "GOT entry %d, type %02x: (local symbol)", | |
671 | i, got_type & 0x7f); | |
6fa2a40b CC |
672 | Sized_relobj_incr<size, big_endian>* obj = |
673 | this->input_object(input_index); | |
674 | if (obj != NULL) | |
675 | target->reserve_local_got_entry(i, obj, symndx, got_type & 0x7f); | |
4829d394 CC |
676 | } |
677 | else | |
678 | { | |
679 | // This is an entry for a global symbol. GOT_DESC is the symbol | |
680 | // table index. | |
681 | // FIXME: This should really be a fatal error (corrupt input). | |
6fa2a40b CC |
682 | gold_assert(symndx >= first_global && symndx < symtab_count); |
683 | Symbol* sym = this->global_symbol(symndx - first_global); | |
5146f448 CC |
684 | // Add the GOT entry only if the symbol is still referenced. |
685 | if (sym != NULL && sym->in_reg()) | |
686 | { | |
687 | gold_debug(DEBUG_INCREMENTAL, | |
688 | "GOT entry %d, type %02x: %s", | |
689 | i, got_type, sym->name()); | |
690 | target->reserve_global_got_entry(i, sym, got_type); | |
691 | } | |
4829d394 CC |
692 | } |
693 | } | |
694 | ||
695 | // Read the PLT entries from the base file and pass each to the target. | |
696 | for (unsigned int i = 0; i < plt_count; ++i) | |
697 | { | |
698 | unsigned int plt_desc = got_plt_reader.get_plt_desc(i); | |
699 | // FIXME: This should really be a fatal error (corrupt input). | |
700 | gold_assert(plt_desc >= first_global && plt_desc < symtab_count); | |
701 | Symbol* sym = this->global_symbol(plt_desc - first_global); | |
5146f448 | 702 | // Add the PLT entry only if the symbol is still referenced. |
a7dac153 | 703 | if (sym != NULL && sym->in_reg()) |
5146f448 CC |
704 | { |
705 | gold_debug(DEBUG_INCREMENTAL, | |
706 | "PLT entry %d: %s", | |
707 | i, sym->name()); | |
67181c72 | 708 | target->register_global_plt_entry(symtab, layout, i, sym); |
5146f448 | 709 | } |
4829d394 CC |
710 | } |
711 | } | |
712 | ||
26d3c67d CC |
713 | // Emit COPY relocations from the existing output file. |
714 | ||
715 | template<int size, bool big_endian> | |
716 | void | |
717 | Sized_incremental_binary<size, big_endian>::do_emit_copy_relocs( | |
718 | Symbol_table* symtab) | |
719 | { | |
720 | Sized_target<size, big_endian>* target = | |
721 | parameters->sized_target<size, big_endian>(); | |
722 | ||
723 | for (typename Copy_relocs::iterator p = this->copy_relocs_.begin(); | |
724 | p != this->copy_relocs_.end(); | |
725 | ++p) | |
726 | { | |
727 | if (!(*p).symbol->is_copied_from_dynobj()) | |
728 | target->emit_copy_reloc(symtab, (*p).symbol, (*p).output_section, | |
729 | (*p).offset); | |
730 | } | |
731 | } | |
732 | ||
94a3fc8b CC |
733 | // Apply incremental relocations for symbols whose values have changed. |
734 | ||
735 | template<int size, bool big_endian> | |
736 | void | |
737 | Sized_incremental_binary<size, big_endian>::do_apply_incremental_relocs( | |
738 | const Symbol_table* symtab, | |
739 | Layout* layout, | |
740 | Output_file* of) | |
741 | { | |
742 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
743 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Addend; | |
744 | Incremental_symtab_reader<big_endian> isymtab(this->symtab_reader()); | |
745 | Incremental_relocs_reader<size, big_endian> irelocs(this->relocs_reader()); | |
746 | unsigned int nglobals = isymtab.symbol_count(); | |
747 | const unsigned int incr_reloc_size = irelocs.reloc_size; | |
748 | ||
749 | Relocate_info<size, big_endian> relinfo; | |
750 | relinfo.symtab = symtab; | |
751 | relinfo.layout = layout; | |
752 | relinfo.object = NULL; | |
753 | relinfo.reloc_shndx = 0; | |
754 | relinfo.reloc_shdr = NULL; | |
755 | relinfo.data_shndx = 0; | |
756 | relinfo.data_shdr = NULL; | |
757 | ||
758 | Sized_target<size, big_endian>* target = | |
759 | parameters->sized_target<size, big_endian>(); | |
760 | ||
761 | for (unsigned int i = 0; i < nglobals; i++) | |
762 | { | |
763 | const Symbol* gsym = this->global_symbol(i); | |
764 | ||
765 | // If the symbol is not referenced from any unchanged input files, | |
766 | // we do not need to reapply any of its relocations. | |
767 | if (gsym == NULL) | |
768 | continue; | |
769 | ||
770 | // If the symbol is defined in an unchanged file, we do not need to | |
771 | // reapply any of its relocations. | |
772 | if (gsym->source() == Symbol::FROM_OBJECT | |
773 | && gsym->object()->is_incremental()) | |
774 | continue; | |
775 | ||
776 | gold_debug(DEBUG_INCREMENTAL, | |
777 | "Applying incremental relocations for global symbol %s [%d]", | |
778 | gsym->name(), i); | |
779 | ||
780 | // Follow the linked list of input symbol table entries for this symbol. | |
781 | // We don't bother to figure out whether the symbol table entry belongs | |
782 | // to a changed or unchanged file because it's easier just to apply all | |
783 | // the relocations -- although we might scribble over an area that has | |
784 | // been reallocated, we do this before copying any new data into the | |
785 | // output file. | |
786 | unsigned int offset = isymtab.get_list_head(i); | |
787 | while (offset > 0) | |
2e702c99 | 788 | { |
94a3fc8b CC |
789 | Incremental_global_symbol_reader<big_endian> sym_info = |
790 | this->inputs_reader().global_symbol_reader_at_offset(offset); | |
791 | unsigned int r_base = sym_info.reloc_offset(); | |
792 | unsigned int r_count = sym_info.reloc_count(); | |
793 | ||
794 | // Apply each relocation for this symbol table entry. | |
795 | for (unsigned int j = 0; j < r_count; | |
796 | ++j, r_base += incr_reloc_size) | |
797 | { | |
798 | unsigned int r_type = irelocs.get_r_type(r_base); | |
799 | unsigned int r_shndx = irelocs.get_r_shndx(r_base); | |
800 | Address r_offset = irelocs.get_r_offset(r_base); | |
801 | Addend r_addend = irelocs.get_r_addend(r_base); | |
802 | Output_section* os = this->output_section(r_shndx); | |
803 | Address address = os->address(); | |
804 | off_t section_offset = os->offset(); | |
805 | size_t view_size = os->data_size(); | |
806 | unsigned char* const view = of->get_output_view(section_offset, | |
807 | view_size); | |
808 | ||
809 | gold_debug(DEBUG_INCREMENTAL, | |
2e702c99 RM |
810 | " %08lx: %s + %d: type %d addend %ld", |
811 | (long)(section_offset + r_offset), | |
812 | os->name(), | |
813 | (int)r_offset, | |
814 | r_type, | |
815 | (long)r_addend); | |
94a3fc8b CC |
816 | |
817 | target->apply_relocation(&relinfo, r_offset, r_type, r_addend, | |
818 | gsym, view, address, view_size); | |
819 | ||
820 | // FIXME: Do something more efficient if write_output_view | |
821 | // ever becomes more than a no-op. | |
822 | of->write_output_view(section_offset, view_size, view); | |
823 | } | |
824 | offset = sym_info.next_offset(); | |
2e702c99 | 825 | } |
94a3fc8b CC |
826 | } |
827 | } | |
828 | ||
cdc29364 | 829 | // Get a view of the main symbol table and the symbol string table. |
b961d0d7 CC |
830 | |
831 | template<int size, bool big_endian> | |
cdc29364 CC |
832 | void |
833 | Sized_incremental_binary<size, big_endian>::get_symtab_view( | |
834 | View* symtab_view, | |
835 | unsigned int* nsyms, | |
836 | elfcpp::Elf_strtab* strtab) | |
b961d0d7 | 837 | { |
4829d394 CC |
838 | *symtab_view = this->view(this->main_symtab_loc_); |
839 | *nsyms = this->main_symtab_loc_.data_size / elfcpp::Elf_sizes<size>::sym_size; | |
cdc29364 | 840 | |
4829d394 CC |
841 | View strtab_view(this->view(this->main_strtab_loc_)); |
842 | *strtab = elfcpp::Elf_strtab(strtab_view.data(), | |
843 | this->main_strtab_loc_.data_size); | |
b961d0d7 CC |
844 | } |
845 | ||
c549a694 ILT |
846 | namespace |
847 | { | |
848 | ||
849 | // Create a Sized_incremental_binary object of the specified size and | |
850 | // endianness. Fails if the target architecture is not supported. | |
851 | ||
852 | template<int size, bool big_endian> | |
853 | Incremental_binary* | |
854 | make_sized_incremental_binary(Output_file* file, | |
2e702c99 | 855 | const elfcpp::Ehdr<size, big_endian>& ehdr) |
c549a694 | 856 | { |
2e702c99 RM |
857 | Target* target = select_target(NULL, 0, // XXX |
858 | ehdr.get_e_machine(), size, big_endian, | |
859 | ehdr.get_e_ident()[elfcpp::EI_OSABI], | |
860 | ehdr.get_e_ident()[elfcpp::EI_ABIVERSION]); | |
c549a694 ILT |
861 | if (target == NULL) |
862 | { | |
863 | explain_no_incremental(_("unsupported ELF machine number %d"), | |
2e702c99 | 864 | ehdr.get_e_machine()); |
c549a694 ILT |
865 | return NULL; |
866 | } | |
867 | ||
3aec4f9c RÁE |
868 | if (!parameters->target_valid()) |
869 | set_parameters_target(target); | |
870 | else if (target != ¶meters->target()) | |
871 | gold_error(_("%s: incompatible target"), file->filename()); | |
872 | ||
c549a694 ILT |
873 | return new Sized_incremental_binary<size, big_endian>(file, ehdr, target); |
874 | } | |
875 | ||
876 | } // End of anonymous namespace. | |
877 | ||
09ec0418 CC |
878 | // Create an Incremental_binary object for FILE. Returns NULL is this is not |
879 | // possible, e.g. FILE is not an ELF file or has an unsupported target. FILE | |
c549a694 ILT |
880 | // should be opened. |
881 | ||
882 | Incremental_binary* | |
883 | open_incremental_binary(Output_file* file) | |
884 | { | |
885 | off_t filesize = file->filesize(); | |
886 | int want = elfcpp::Elf_recognizer::max_header_size; | |
887 | if (filesize < want) | |
888 | want = filesize; | |
889 | ||
890 | const unsigned char* p = file->get_input_view(0, want); | |
891 | if (!elfcpp::Elf_recognizer::is_elf_file(p, want)) | |
892 | { | |
893 | explain_no_incremental(_("output is not an ELF file.")); | |
894 | return NULL; | |
895 | } | |
896 | ||
ac33a407 DK |
897 | int size = 0; |
898 | bool big_endian = false; | |
c549a694 ILT |
899 | std::string error; |
900 | if (!elfcpp::Elf_recognizer::is_valid_header(p, want, &size, &big_endian, | |
2e702c99 | 901 | &error)) |
c549a694 ILT |
902 | { |
903 | explain_no_incremental(error.c_str()); | |
904 | return NULL; | |
905 | } | |
906 | ||
907 | Incremental_binary* result = NULL; | |
908 | if (size == 32) | |
909 | { | |
910 | if (big_endian) | |
2e702c99 | 911 | { |
c549a694 | 912 | #ifdef HAVE_TARGET_32_BIG |
2e702c99 RM |
913 | result = make_sized_incremental_binary<32, true>( |
914 | file, elfcpp::Ehdr<32, true>(p)); | |
c549a694 | 915 | #else |
2e702c99 | 916 | explain_no_incremental(_("unsupported file: 32-bit, big-endian")); |
c549a694 | 917 | #endif |
2e702c99 | 918 | } |
c549a694 | 919 | else |
2e702c99 | 920 | { |
c549a694 | 921 | #ifdef HAVE_TARGET_32_LITTLE |
2e702c99 RM |
922 | result = make_sized_incremental_binary<32, false>( |
923 | file, elfcpp::Ehdr<32, false>(p)); | |
c549a694 | 924 | #else |
2e702c99 | 925 | explain_no_incremental(_("unsupported file: 32-bit, little-endian")); |
c549a694 | 926 | #endif |
2e702c99 | 927 | } |
c549a694 ILT |
928 | } |
929 | else if (size == 64) | |
930 | { | |
931 | if (big_endian) | |
2e702c99 | 932 | { |
c549a694 | 933 | #ifdef HAVE_TARGET_64_BIG |
2e702c99 RM |
934 | result = make_sized_incremental_binary<64, true>( |
935 | file, elfcpp::Ehdr<64, true>(p)); | |
c549a694 | 936 | #else |
2e702c99 | 937 | explain_no_incremental(_("unsupported file: 64-bit, big-endian")); |
c549a694 | 938 | #endif |
2e702c99 | 939 | } |
c549a694 | 940 | else |
2e702c99 | 941 | { |
c549a694 | 942 | #ifdef HAVE_TARGET_64_LITTLE |
2e702c99 RM |
943 | result = make_sized_incremental_binary<64, false>( |
944 | file, elfcpp::Ehdr<64, false>(p)); | |
c549a694 | 945 | #else |
2e702c99 | 946 | explain_no_incremental(_("unsupported file: 64-bit, little-endian")); |
c549a694 | 947 | #endif |
2e702c99 | 948 | } |
c549a694 ILT |
949 | } |
950 | else | |
951 | gold_unreachable(); | |
952 | ||
953 | return result; | |
954 | } | |
955 | ||
09ec0418 CC |
956 | // Class Incremental_inputs. |
957 | ||
3ce2c28e ILT |
958 | // Add the command line to the string table, setting |
959 | // command_line_key_. In incremental builds, the command line is | |
960 | // stored in .gnu_incremental_inputs so that the next linker run can | |
961 | // check if the command line options didn't change. | |
962 | ||
963 | void | |
964 | Incremental_inputs::report_command_line(int argc, const char* const* argv) | |
965 | { | |
966 | // Always store 'gold' as argv[0] to avoid a full relink if the user used a | |
967 | // different path to the linker. | |
968 | std::string args("gold"); | |
969 | // Copied from collect_argv in main.cc. | |
970 | for (int i = 1; i < argc; ++i) | |
971 | { | |
09ec0418 | 972 | // Adding/removing these options should not result in a full relink. |
8c21d9d3 CC |
973 | if (strcmp(argv[i], "--incremental") == 0 |
974 | || strcmp(argv[i], "--incremental-full") == 0 | |
975 | || strcmp(argv[i], "--incremental-update") == 0 | |
976 | || strcmp(argv[i], "--incremental-changed") == 0 | |
b19b0c6d | 977 | || strcmp(argv[i], "--incremental-unchanged") == 0 |
cdc29364 | 978 | || strcmp(argv[i], "--incremental-unknown") == 0 |
221597a5 | 979 | || strcmp(argv[i], "--incremental-startup-unchanged") == 0 |
aa92d6ed | 980 | || is_prefix_of("--incremental-base=", argv[i]) |
9fbd3822 | 981 | || is_prefix_of("--incremental-patch=", argv[i]) |
cdc29364 | 982 | || is_prefix_of("--debug=", argv[i])) |
2e702c99 | 983 | continue; |
aa92d6ed | 984 | if (strcmp(argv[i], "--incremental-base") == 0 |
9fbd3822 | 985 | || strcmp(argv[i], "--incremental-patch") == 0 |
aa92d6ed CC |
986 | || strcmp(argv[i], "--debug") == 0) |
987 | { | |
988 | // When these options are used without the '=', skip the | |
989 | // following parameter as well. | |
990 | ++i; | |
991 | continue; | |
992 | } | |
b19b0c6d | 993 | |
3ce2c28e ILT |
994 | args.append(" '"); |
995 | // Now append argv[i], but with all single-quotes escaped | |
996 | const char* argpos = argv[i]; | |
997 | while (1) | |
2e702c99 RM |
998 | { |
999 | const int len = strcspn(argpos, "'"); | |
1000 | args.append(argpos, len); | |
1001 | if (argpos[len] == '\0') | |
1002 | break; | |
1003 | args.append("'\"'\"'"); | |
1004 | argpos += len + 1; | |
1005 | } | |
3ce2c28e ILT |
1006 | args.append("'"); |
1007 | } | |
c4aa1e2d ILT |
1008 | |
1009 | this->command_line_ = args; | |
1010 | this->strtab_->add(this->command_line_.c_str(), false, | |
2e702c99 | 1011 | &this->command_line_key_); |
3ce2c28e ILT |
1012 | } |
1013 | ||
09ec0418 CC |
1014 | // Record the input archive file ARCHIVE. This is called by the |
1015 | // Add_archive_symbols task before determining which archive members | |
1016 | // to include. We create the Incremental_archive_entry here and | |
1017 | // attach it to the Archive, but we do not add it to the list of | |
1018 | // input objects until report_archive_end is called. | |
072fe7ce ILT |
1019 | |
1020 | void | |
c7975edd | 1021 | Incremental_inputs::report_archive_begin(Library_base* arch, |
cdc29364 | 1022 | unsigned int arg_serial, |
c7975edd | 1023 | Script_info* script_info) |
072fe7ce | 1024 | { |
09ec0418 | 1025 | Stringpool::Key filename_key; |
e0c52780 | 1026 | Timespec mtime = arch->get_mtime(); |
072fe7ce | 1027 | |
cdc29364 CC |
1028 | // For a file loaded from a script, don't record its argument serial number. |
1029 | if (script_info != NULL) | |
1030 | arg_serial = 0; | |
1031 | ||
09ec0418 CC |
1032 | this->strtab_->add(arch->filename().c_str(), false, &filename_key); |
1033 | Incremental_archive_entry* entry = | |
cdc29364 | 1034 | new Incremental_archive_entry(filename_key, arg_serial, mtime); |
09ec0418 | 1035 | arch->set_incremental_info(entry); |
c7975edd CC |
1036 | |
1037 | if (script_info != NULL) | |
1038 | { | |
1039 | Incremental_script_entry* script_entry = script_info->incremental_info(); | |
1040 | gold_assert(script_entry != NULL); | |
1041 | script_entry->add_object(entry); | |
1042 | } | |
072fe7ce ILT |
1043 | } |
1044 | ||
e0c52780 CC |
1045 | // Visitor class for processing the unused global symbols in a library. |
1046 | // An instance of this class is passed to the library's | |
1047 | // for_all_unused_symbols() iterator, which will call the visit() | |
1048 | // function for each global symbol defined in each unused library | |
1049 | // member. We add those symbol names to the incremental info for the | |
1050 | // library. | |
1051 | ||
1052 | class Unused_symbol_visitor : public Library_base::Symbol_visitor_base | |
1053 | { | |
1054 | public: | |
1055 | Unused_symbol_visitor(Incremental_archive_entry* entry, Stringpool* strtab) | |
1056 | : entry_(entry), strtab_(strtab) | |
1057 | { } | |
1058 | ||
1059 | void | |
1060 | visit(const char* sym) | |
1061 | { | |
1062 | Stringpool::Key symbol_key; | |
1063 | this->strtab_->add(sym, true, &symbol_key); | |
1064 | this->entry_->add_unused_global_symbol(symbol_key); | |
1065 | } | |
1066 | ||
1067 | private: | |
1068 | Incremental_archive_entry* entry_; | |
1069 | Stringpool* strtab_; | |
1070 | }; | |
1071 | ||
09ec0418 CC |
1072 | // Finish recording the input archive file ARCHIVE. This is called by the |
1073 | // Add_archive_symbols task after determining which archive members | |
1074 | // to include. | |
072fe7ce ILT |
1075 | |
1076 | void | |
e0c52780 | 1077 | Incremental_inputs::report_archive_end(Library_base* arch) |
072fe7ce | 1078 | { |
09ec0418 CC |
1079 | Incremental_archive_entry* entry = arch->incremental_info(); |
1080 | ||
1081 | gold_assert(entry != NULL); | |
cdc29364 | 1082 | this->inputs_.push_back(entry); |
09ec0418 CC |
1083 | |
1084 | // Collect unused global symbols. | |
e0c52780 CC |
1085 | Unused_symbol_visitor v(entry, this->strtab_); |
1086 | arch->for_all_unused_symbols(&v); | |
072fe7ce ILT |
1087 | } |
1088 | ||
09ec0418 CC |
1089 | // Record the input object file OBJ. If ARCH is not NULL, attach |
1090 | // the object file to the archive. This is called by the | |
1091 | // Add_symbols task after finding out the type of the file. | |
072fe7ce ILT |
1092 | |
1093 | void | |
cdc29364 CC |
1094 | Incremental_inputs::report_object(Object* obj, unsigned int arg_serial, |
1095 | Library_base* arch, Script_info* script_info) | |
072fe7ce | 1096 | { |
09ec0418 | 1097 | Stringpool::Key filename_key; |
cdc29364 CC |
1098 | Timespec mtime = obj->get_mtime(); |
1099 | ||
1100 | // For a file loaded from a script, don't record its argument serial number. | |
1101 | if (script_info != NULL) | |
1102 | arg_serial = 0; | |
09ec0418 CC |
1103 | |
1104 | this->strtab_->add(obj->name().c_str(), false, &filename_key); | |
072fe7ce | 1105 | |
0f1c85a6 CC |
1106 | Incremental_input_entry* input_entry; |
1107 | ||
1108 | this->current_object_ = obj; | |
1109 | ||
1110 | if (!obj->is_dynamic()) | |
09ec0418 | 1111 | { |
0f1c85a6 | 1112 | this->current_object_entry_ = |
2e702c99 | 1113 | new Incremental_object_entry(filename_key, obj, arg_serial, mtime); |
0f1c85a6 CC |
1114 | input_entry = this->current_object_entry_; |
1115 | if (arch != NULL) | |
1116 | { | |
1117 | Incremental_archive_entry* arch_entry = arch->incremental_info(); | |
1118 | gold_assert(arch_entry != NULL); | |
1119 | arch_entry->add_object(this->current_object_entry_); | |
1120 | } | |
09ec0418 | 1121 | } |
0f1c85a6 CC |
1122 | else |
1123 | { | |
1124 | this->current_object_entry_ = NULL; | |
1125 | Stringpool::Key soname_key; | |
1126 | Dynobj* dynobj = obj->dynobj(); | |
1127 | gold_assert(dynobj != NULL); | |
1128 | this->strtab_->add(dynobj->soname(), false, &soname_key); | |
1129 | input_entry = new Incremental_dynobj_entry(filename_key, soname_key, obj, | |
1130 | arg_serial, mtime); | |
1131 | } | |
1132 | ||
1133 | if (obj->is_in_system_directory()) | |
1134 | input_entry->set_is_in_system_directory(); | |
1135 | ||
1136 | if (obj->as_needed()) | |
1137 | input_entry->set_as_needed(); | |
1138 | ||
1139 | this->inputs_.push_back(input_entry); | |
09ec0418 | 1140 | |
c7975edd CC |
1141 | if (script_info != NULL) |
1142 | { | |
1143 | Incremental_script_entry* script_entry = script_info->incremental_info(); | |
1144 | gold_assert(script_entry != NULL); | |
0f1c85a6 | 1145 | script_entry->add_object(input_entry); |
c7975edd | 1146 | } |
072fe7ce ILT |
1147 | } |
1148 | ||
89d8a36b | 1149 | // Record an input section SHNDX from object file OBJ. |
072fe7ce ILT |
1150 | |
1151 | void | |
09ec0418 CC |
1152 | Incremental_inputs::report_input_section(Object* obj, unsigned int shndx, |
1153 | const char* name, off_t sh_size) | |
072fe7ce | 1154 | { |
09ec0418 | 1155 | Stringpool::Key key = 0; |
072fe7ce | 1156 | |
09ec0418 | 1157 | if (name != NULL) |
89d8a36b | 1158 | this->strtab_->add(name, true, &key); |
09ec0418 CC |
1159 | |
1160 | gold_assert(obj == this->current_object_); | |
0f1c85a6 | 1161 | gold_assert(this->current_object_entry_ != NULL); |
09ec0418 CC |
1162 | this->current_object_entry_->add_input_section(shndx, key, sh_size); |
1163 | } | |
1164 | ||
89d8a36b CC |
1165 | // Record a kept COMDAT group belonging to object file OBJ. |
1166 | ||
1167 | void | |
1168 | Incremental_inputs::report_comdat_group(Object* obj, const char* name) | |
1169 | { | |
1170 | Stringpool::Key key = 0; | |
1171 | ||
1172 | if (name != NULL) | |
1173 | this->strtab_->add(name, true, &key); | |
1174 | gold_assert(obj == this->current_object_); | |
1175 | gold_assert(this->current_object_entry_ != NULL); | |
1176 | this->current_object_entry_->add_comdat_group(key); | |
1177 | } | |
1178 | ||
09ec0418 CC |
1179 | // Record that the input argument INPUT is a script SCRIPT. This is |
1180 | // called by read_script after parsing the script and reading the list | |
1181 | // of inputs added by this script. | |
1182 | ||
1183 | void | |
cdc29364 CC |
1184 | Incremental_inputs::report_script(Script_info* script, |
1185 | unsigned int arg_serial, | |
1186 | Timespec mtime) | |
09ec0418 CC |
1187 | { |
1188 | Stringpool::Key filename_key; | |
1189 | ||
cdc29364 | 1190 | this->strtab_->add(script->filename().c_str(), false, &filename_key); |
09ec0418 | 1191 | Incremental_script_entry* entry = |
cdc29364 | 1192 | new Incremental_script_entry(filename_key, arg_serial, script, mtime); |
09ec0418 | 1193 | this->inputs_.push_back(entry); |
c7975edd | 1194 | script->set_incremental_info(entry); |
072fe7ce ILT |
1195 | } |
1196 | ||
3ce2c28e ILT |
1197 | // Finalize the incremental link information. Called from |
1198 | // Layout::finalize. | |
1199 | ||
1200 | void | |
1201 | Incremental_inputs::finalize() | |
1202 | { | |
09ec0418 | 1203 | // Finalize the string table. |
3ce2c28e ILT |
1204 | this->strtab_->set_string_offsets(); |
1205 | } | |
1206 | ||
09ec0418 | 1207 | // Create the .gnu_incremental_inputs, _symtab, and _relocs input sections. |
3ce2c28e | 1208 | |
09ec0418 CC |
1209 | void |
1210 | Incremental_inputs::create_data_sections(Symbol_table* symtab) | |
3ce2c28e | 1211 | { |
f038d496 CC |
1212 | int reloc_align = 4; |
1213 | ||
3ce2c28e ILT |
1214 | switch (parameters->size_and_endianness()) |
1215 | { | |
1216 | #ifdef HAVE_TARGET_32_LITTLE | |
1217 | case Parameters::TARGET_32_LITTLE: | |
09ec0418 | 1218 | this->inputs_section_ = |
2e702c99 | 1219 | new Output_section_incremental_inputs<32, false>(this, symtab); |
f038d496 | 1220 | reloc_align = 4; |
09ec0418 | 1221 | break; |
3ce2c28e ILT |
1222 | #endif |
1223 | #ifdef HAVE_TARGET_32_BIG | |
1224 | case Parameters::TARGET_32_BIG: | |
09ec0418 | 1225 | this->inputs_section_ = |
2e702c99 | 1226 | new Output_section_incremental_inputs<32, true>(this, symtab); |
f038d496 | 1227 | reloc_align = 4; |
09ec0418 | 1228 | break; |
3ce2c28e ILT |
1229 | #endif |
1230 | #ifdef HAVE_TARGET_64_LITTLE | |
1231 | case Parameters::TARGET_64_LITTLE: | |
09ec0418 | 1232 | this->inputs_section_ = |
2e702c99 | 1233 | new Output_section_incremental_inputs<64, false>(this, symtab); |
f038d496 | 1234 | reloc_align = 8; |
09ec0418 | 1235 | break; |
3ce2c28e ILT |
1236 | #endif |
1237 | #ifdef HAVE_TARGET_64_BIG | |
1238 | case Parameters::TARGET_64_BIG: | |
09ec0418 | 1239 | this->inputs_section_ = |
2e702c99 | 1240 | new Output_section_incremental_inputs<64, true>(this, symtab); |
f038d496 | 1241 | reloc_align = 8; |
09ec0418 | 1242 | break; |
3ce2c28e ILT |
1243 | #endif |
1244 | default: | |
1245 | gold_unreachable(); | |
072fe7ce | 1246 | } |
09ec0418 | 1247 | this->symtab_section_ = new Output_data_space(4, "** incremental_symtab"); |
f038d496 CC |
1248 | this->relocs_section_ = new Output_data_space(reloc_align, |
1249 | "** incremental_relocs"); | |
0e70b911 | 1250 | this->got_plt_section_ = new Output_data_space(4, "** incremental_got_plt"); |
3ce2c28e ILT |
1251 | } |
1252 | ||
09ec0418 CC |
1253 | // Return the sh_entsize value for the .gnu_incremental_relocs section. |
1254 | unsigned int | |
1255 | Incremental_inputs::relocs_entsize() const | |
1256 | { | |
1257 | return 8 + 2 * parameters->target().get_size() / 8; | |
1258 | } | |
1259 | ||
1260 | // Class Output_section_incremental_inputs. | |
1261 | ||
1262 | // Finalize the offsets for each input section and supplemental info block, | |
1263 | // and set the final data size of the incremental output sections. | |
3ce2c28e ILT |
1264 | |
1265 | template<int size, bool big_endian> | |
09ec0418 CC |
1266 | void |
1267 | Output_section_incremental_inputs<size, big_endian>::set_final_data_size() | |
072fe7ce | 1268 | { |
09ec0418 | 1269 | const Incremental_inputs* inputs = this->inputs_; |
09ec0418 CC |
1270 | |
1271 | // Offset of each input entry. | |
1272 | unsigned int input_offset = this->header_size; | |
1273 | ||
1274 | // Offset of each supplemental info block. | |
4829d394 | 1275 | unsigned int file_index = 0; |
09ec0418 CC |
1276 | unsigned int info_offset = this->header_size; |
1277 | info_offset += this->input_entry_size * inputs->input_file_count(); | |
1278 | ||
1279 | // Count each input file and its supplemental information block. | |
1280 | for (Incremental_inputs::Input_list::const_iterator p = | |
1281 | inputs->input_files().begin(); | |
1282 | p != inputs->input_files().end(); | |
1283 | ++p) | |
072fe7ce | 1284 | { |
4829d394 CC |
1285 | // Set the index and offset of the input file entry. |
1286 | (*p)->set_offset(file_index, input_offset); | |
1287 | ++file_index; | |
09ec0418 CC |
1288 | input_offset += this->input_entry_size; |
1289 | ||
1290 | // Set the offset of the supplemental info block. | |
1291 | switch ((*p)->type()) | |
1292 | { | |
1293 | case INCREMENTAL_INPUT_SCRIPT: | |
c7975edd CC |
1294 | { |
1295 | Incremental_script_entry *entry = (*p)->script_entry(); | |
1296 | gold_assert(entry != NULL); | |
1297 | (*p)->set_info_offset(info_offset); | |
1298 | // Object count. | |
1299 | info_offset += 4; | |
1300 | // Each member. | |
1301 | info_offset += (entry->get_object_count() * 4); | |
1302 | } | |
09ec0418 CC |
1303 | break; |
1304 | case INCREMENTAL_INPUT_OBJECT: | |
1305 | case INCREMENTAL_INPUT_ARCHIVE_MEMBER: | |
1306 | { | |
ca09d69a | 1307 | Incremental_object_entry* entry = (*p)->object_entry(); |
09ec0418 CC |
1308 | gold_assert(entry != NULL); |
1309 | (*p)->set_info_offset(info_offset); | |
f0f9babf | 1310 | // Input section count, global symbol count, local symbol offset, |
89d8a36b CC |
1311 | // local symbol count, first dynamic reloc, dynamic reloc count, |
1312 | // comdat group count. | |
f038d496 | 1313 | info_offset += this->object_info_size; |
09ec0418 CC |
1314 | // Each input section. |
1315 | info_offset += (entry->get_input_section_count() | |
f038d496 | 1316 | * this->input_section_entry_size); |
09ec0418 CC |
1317 | // Each global symbol. |
1318 | const Object::Symbols* syms = entry->object()->get_global_symbols(); | |
f038d496 | 1319 | info_offset += syms->size() * this->global_sym_entry_size; |
89d8a36b CC |
1320 | // Each comdat group. |
1321 | info_offset += entry->get_comdat_group_count() * 4; | |
09ec0418 CC |
1322 | } |
1323 | break; | |
1324 | case INCREMENTAL_INPUT_SHARED_LIBRARY: | |
1325 | { | |
0f1c85a6 | 1326 | Incremental_dynobj_entry* entry = (*p)->dynobj_entry(); |
09ec0418 CC |
1327 | gold_assert(entry != NULL); |
1328 | (*p)->set_info_offset(info_offset); | |
0f1c85a6 CC |
1329 | // Global symbol count, soname index. |
1330 | info_offset += 8; | |
09ec0418 CC |
1331 | // Each global symbol. |
1332 | const Object::Symbols* syms = entry->object()->get_global_symbols(); | |
cdc29364 CC |
1333 | gold_assert(syms != NULL); |
1334 | unsigned int nsyms = syms->size(); | |
1335 | unsigned int nsyms_out = 0; | |
1336 | for (unsigned int i = 0; i < nsyms; ++i) | |
1337 | { | |
1338 | const Symbol* sym = (*syms)[i]; | |
1339 | if (sym == NULL) | |
1340 | continue; | |
1341 | if (sym->is_forwarder()) | |
1342 | sym = this->symtab_->resolve_forwards(sym); | |
2e702c99 RM |
1343 | if (sym->symtab_index() != -1U) |
1344 | ++nsyms_out; | |
cdc29364 CC |
1345 | } |
1346 | info_offset += nsyms_out * 4; | |
09ec0418 CC |
1347 | } |
1348 | break; | |
1349 | case INCREMENTAL_INPUT_ARCHIVE: | |
1350 | { | |
ca09d69a | 1351 | Incremental_archive_entry* entry = (*p)->archive_entry(); |
09ec0418 CC |
1352 | gold_assert(entry != NULL); |
1353 | (*p)->set_info_offset(info_offset); | |
1354 | // Member count + unused global symbol count. | |
1355 | info_offset += 8; | |
1356 | // Each member. | |
1357 | info_offset += (entry->get_member_count() * 4); | |
1358 | // Each global symbol. | |
1359 | info_offset += (entry->get_unused_global_symbol_count() * 4); | |
1360 | } | |
1361 | break; | |
1362 | default: | |
1363 | gold_unreachable(); | |
1364 | } | |
f038d496 CC |
1365 | |
1366 | // Pad so each supplemental info block begins at an 8-byte boundary. | |
1367 | if (info_offset & 4) | |
1368 | info_offset += 4; | |
1369 | } | |
072fe7ce | 1370 | |
09ec0418 CC |
1371 | this->set_data_size(info_offset); |
1372 | ||
1373 | // Set the size of the .gnu_incremental_symtab section. | |
1374 | inputs->symtab_section()->set_current_data_size(this->symtab_->output_count() | |
1375 | * sizeof(unsigned int)); | |
1376 | ||
1377 | // Set the size of the .gnu_incremental_relocs section. | |
1378 | inputs->relocs_section()->set_current_data_size(inputs->get_reloc_count() | |
f038d496 | 1379 | * this->incr_reloc_size); |
0e70b911 CC |
1380 | |
1381 | // Set the size of the .gnu_incremental_got_plt section. | |
1382 | Sized_target<size, big_endian>* target = | |
1383 | parameters->sized_target<size, big_endian>(); | |
1384 | unsigned int got_count = target->got_entry_count(); | |
1385 | unsigned int plt_count = target->plt_entry_count(); | |
1386 | unsigned int got_plt_size = 8; // GOT entry count, PLT entry count. | |
1387 | got_plt_size = (got_plt_size + got_count + 3) & ~3; // GOT type array. | |
6fa2a40b | 1388 | got_plt_size += got_count * 8 + plt_count * 4; // GOT array, PLT array. |
0e70b911 | 1389 | inputs->got_plt_section()->set_current_data_size(got_plt_size); |
09ec0418 CC |
1390 | } |
1391 | ||
1392 | // Write the contents of the .gnu_incremental_inputs and | |
1393 | // .gnu_incremental_symtab sections. | |
1394 | ||
1395 | template<int size, bool big_endian> | |
1396 | void | |
1397 | Output_section_incremental_inputs<size, big_endian>::do_write(Output_file* of) | |
1398 | { | |
1399 | const Incremental_inputs* inputs = this->inputs_; | |
1400 | Stringpool* strtab = inputs->get_stringpool(); | |
1401 | ||
1402 | // Get a view into the .gnu_incremental_inputs section. | |
1403 | const off_t off = this->offset(); | |
1404 | const off_t oview_size = this->data_size(); | |
1405 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
1406 | unsigned char* pov = oview; | |
1407 | ||
1408 | // Get a view into the .gnu_incremental_symtab section. | |
1409 | const off_t symtab_off = inputs->symtab_section()->offset(); | |
1410 | const off_t symtab_size = inputs->symtab_section()->data_size(); | |
1411 | unsigned char* const symtab_view = of->get_output_view(symtab_off, | |
1412 | symtab_size); | |
1413 | ||
1414 | // Allocate an array of linked list heads for the .gnu_incremental_symtab | |
1415 | // section. Each element corresponds to a global symbol in the output | |
1416 | // symbol table, and points to the head of the linked list that threads | |
1417 | // through the object file input entries. The value of each element | |
1418 | // is the section-relative offset to a global symbol entry in a | |
1419 | // supplemental information block. | |
1420 | unsigned int global_sym_count = this->symtab_->output_count(); | |
1421 | unsigned int* global_syms = new unsigned int[global_sym_count]; | |
1422 | memset(global_syms, 0, global_sym_count * sizeof(unsigned int)); | |
1423 | ||
1424 | // Write the section header. | |
1425 | Stringpool::Key command_line_key = inputs->command_line_key(); | |
1426 | pov = this->write_header(pov, inputs->input_file_count(), | |
1427 | strtab->get_offset_from_key(command_line_key)); | |
1428 | ||
1429 | // Write the list of input files. | |
1430 | pov = this->write_input_files(oview, pov, strtab); | |
1431 | ||
1432 | // Write the supplemental information blocks for each input file. | |
1433 | pov = this->write_info_blocks(oview, pov, strtab, global_syms, | |
1434 | global_sym_count); | |
1435 | ||
1436 | gold_assert(pov - oview == oview_size); | |
1437 | ||
1438 | // Write the .gnu_incremental_symtab section. | |
50ed5eb1 | 1439 | gold_assert(static_cast<off_t>(global_sym_count) * 4 == symtab_size); |
09ec0418 CC |
1440 | this->write_symtab(symtab_view, global_syms, global_sym_count); |
1441 | ||
1442 | delete[] global_syms; | |
1443 | ||
0e70b911 CC |
1444 | // Write the .gnu_incremental_got_plt section. |
1445 | const off_t got_plt_off = inputs->got_plt_section()->offset(); | |
1446 | const off_t got_plt_size = inputs->got_plt_section()->data_size(); | |
1447 | unsigned char* const got_plt_view = of->get_output_view(got_plt_off, | |
1448 | got_plt_size); | |
1449 | this->write_got_plt(got_plt_view, got_plt_size); | |
1450 | ||
09ec0418 CC |
1451 | of->write_output_view(off, oview_size, oview); |
1452 | of->write_output_view(symtab_off, symtab_size, symtab_view); | |
0e70b911 | 1453 | of->write_output_view(got_plt_off, got_plt_size, got_plt_view); |
09ec0418 CC |
1454 | } |
1455 | ||
1456 | // Write the section header: version, input file count, offset of command line | |
1457 | // in the string table, and 4 bytes of padding. | |
1458 | ||
1459 | template<int size, bool big_endian> | |
1460 | unsigned char* | |
1461 | Output_section_incremental_inputs<size, big_endian>::write_header( | |
1462 | unsigned char* pov, | |
1463 | unsigned int input_file_count, | |
1464 | section_offset_type command_line_offset) | |
1465 | { | |
1466 | Swap32::writeval(pov, INCREMENTAL_LINK_VERSION); | |
1467 | Swap32::writeval(pov + 4, input_file_count); | |
1468 | Swap32::writeval(pov + 8, command_line_offset); | |
1469 | Swap32::writeval(pov + 12, 0); | |
f038d496 | 1470 | gold_assert(this->header_size == 16); |
09ec0418 CC |
1471 | return pov + this->header_size; |
1472 | } | |
1473 | ||
1474 | // Write the input file entries. | |
1475 | ||
1476 | template<int size, bool big_endian> | |
1477 | unsigned char* | |
1478 | Output_section_incremental_inputs<size, big_endian>::write_input_files( | |
1479 | unsigned char* oview, | |
1480 | unsigned char* pov, | |
1481 | Stringpool* strtab) | |
1482 | { | |
1483 | const Incremental_inputs* inputs = this->inputs_; | |
1484 | ||
1485 | for (Incremental_inputs::Input_list::const_iterator p = | |
1486 | inputs->input_files().begin(); | |
1487 | p != inputs->input_files().end(); | |
1488 | ++p) | |
1489 | { | |
56f75c03 | 1490 | gold_assert(static_cast<unsigned int>(pov - oview) == (*p)->get_offset()); |
09ec0418 | 1491 | section_offset_type filename_offset = |
2e702c99 | 1492 | strtab->get_offset_from_key((*p)->get_filename_key()); |
09ec0418 | 1493 | const Timespec& mtime = (*p)->get_mtime(); |
cdc29364 CC |
1494 | unsigned int flags = (*p)->type(); |
1495 | if ((*p)->is_in_system_directory()) | |
2e702c99 | 1496 | flags |= INCREMENTAL_INPUT_IN_SYSTEM_DIR; |
0f1c85a6 | 1497 | if ((*p)->as_needed()) |
2e702c99 | 1498 | flags |= INCREMENTAL_INPUT_AS_NEEDED; |
09ec0418 CC |
1499 | Swap32::writeval(pov, filename_offset); |
1500 | Swap32::writeval(pov + 4, (*p)->get_info_offset()); | |
1501 | Swap64::writeval(pov + 8, mtime.seconds); | |
1502 | Swap32::writeval(pov + 16, mtime.nanoseconds); | |
cdc29364 CC |
1503 | Swap16::writeval(pov + 20, flags); |
1504 | Swap16::writeval(pov + 22, (*p)->arg_serial()); | |
f038d496 | 1505 | gold_assert(this->input_entry_size == 24); |
09ec0418 CC |
1506 | pov += this->input_entry_size; |
1507 | } | |
1508 | return pov; | |
1509 | } | |
1510 | ||
1511 | // Write the supplemental information blocks. | |
1512 | ||
1513 | template<int size, bool big_endian> | |
1514 | unsigned char* | |
1515 | Output_section_incremental_inputs<size, big_endian>::write_info_blocks( | |
1516 | unsigned char* oview, | |
1517 | unsigned char* pov, | |
1518 | Stringpool* strtab, | |
1519 | unsigned int* global_syms, | |
1520 | unsigned int global_sym_count) | |
1521 | { | |
1522 | const Incremental_inputs* inputs = this->inputs_; | |
1523 | unsigned int first_global_index = this->symtab_->first_global_index(); | |
1524 | ||
1525 | for (Incremental_inputs::Input_list::const_iterator p = | |
1526 | inputs->input_files().begin(); | |
1527 | p != inputs->input_files().end(); | |
1528 | ++p) | |
1529 | { | |
1530 | switch ((*p)->type()) | |
1531 | { | |
1532 | case INCREMENTAL_INPUT_SCRIPT: | |
c7975edd CC |
1533 | { |
1534 | gold_assert(static_cast<unsigned int>(pov - oview) | |
1535 | == (*p)->get_info_offset()); | |
1536 | Incremental_script_entry* entry = (*p)->script_entry(); | |
1537 | gold_assert(entry != NULL); | |
1538 | ||
1539 | // Write the object count. | |
1540 | unsigned int nobjects = entry->get_object_count(); | |
1541 | Swap32::writeval(pov, nobjects); | |
1542 | pov += 4; | |
1543 | ||
1544 | // For each object, write the offset to its input file entry. | |
1545 | for (unsigned int i = 0; i < nobjects; ++i) | |
1546 | { | |
1547 | Incremental_input_entry* obj = entry->get_object(i); | |
1548 | Swap32::writeval(pov, obj->get_offset()); | |
1549 | pov += 4; | |
1550 | } | |
1551 | } | |
09ec0418 CC |
1552 | break; |
1553 | ||
1554 | case INCREMENTAL_INPUT_OBJECT: | |
1555 | case INCREMENTAL_INPUT_ARCHIVE_MEMBER: | |
1556 | { | |
56f75c03 ILT |
1557 | gold_assert(static_cast<unsigned int>(pov - oview) |
1558 | == (*p)->get_info_offset()); | |
09ec0418 CC |
1559 | Incremental_object_entry* entry = (*p)->object_entry(); |
1560 | gold_assert(entry != NULL); | |
1561 | const Object* obj = entry->object(); | |
f0f9babf | 1562 | const Relobj* relobj = static_cast<const Relobj*>(obj); |
09ec0418 CC |
1563 | const Object::Symbols* syms = obj->get_global_symbols(); |
1564 | // Write the input section count and global symbol count. | |
1565 | unsigned int nsections = entry->get_input_section_count(); | |
1566 | unsigned int nsyms = syms->size(); | |
f0f9babf CC |
1567 | off_t locals_offset = relobj->local_symbol_offset(); |
1568 | unsigned int nlocals = relobj->output_local_symbol_count(); | |
6fa2a40b CC |
1569 | unsigned int first_dynrel = relobj->first_dyn_reloc(); |
1570 | unsigned int ndynrel = relobj->dyn_reloc_count(); | |
89d8a36b | 1571 | unsigned int ncomdat = entry->get_comdat_group_count(); |
09ec0418 CC |
1572 | Swap32::writeval(pov, nsections); |
1573 | Swap32::writeval(pov + 4, nsyms); | |
f0f9babf CC |
1574 | Swap32::writeval(pov + 8, static_cast<unsigned int>(locals_offset)); |
1575 | Swap32::writeval(pov + 12, nlocals); | |
6fa2a40b CC |
1576 | Swap32::writeval(pov + 16, first_dynrel); |
1577 | Swap32::writeval(pov + 20, ndynrel); | |
89d8a36b | 1578 | Swap32::writeval(pov + 24, ncomdat); |
f038d496 CC |
1579 | Swap32::writeval(pov + 28, 0); |
1580 | gold_assert(this->object_info_size == 32); | |
1581 | pov += this->object_info_size; | |
09ec0418 | 1582 | |
cdc29364 CC |
1583 | // Build a temporary array to map input section indexes |
1584 | // from the original object file index to the index in the | |
1585 | // incremental info table. | |
1586 | unsigned int* index_map = new unsigned int[obj->shnum()]; | |
1587 | memset(index_map, 0, obj->shnum() * sizeof(unsigned int)); | |
1588 | ||
09ec0418 CC |
1589 | // For each input section, write the name, output section index, |
1590 | // offset within output section, and input section size. | |
1591 | for (unsigned int i = 0; i < nsections; i++) | |
1592 | { | |
cdc29364 CC |
1593 | unsigned int shndx = entry->get_input_section_index(i); |
1594 | index_map[shndx] = i + 1; | |
09ec0418 CC |
1595 | Stringpool::Key key = entry->get_input_section_name_key(i); |
1596 | off_t name_offset = 0; | |
1597 | if (key != 0) | |
1598 | name_offset = strtab->get_offset_from_key(key); | |
1599 | int out_shndx = 0; | |
1600 | off_t out_offset = 0; | |
1601 | off_t sh_size = 0; | |
cdc29364 | 1602 | Output_section* os = obj->output_section(shndx); |
09ec0418 CC |
1603 | if (os != NULL) |
1604 | { | |
1605 | out_shndx = os->out_shndx(); | |
cdc29364 | 1606 | out_offset = obj->output_section_offset(shndx); |
09ec0418 CC |
1607 | sh_size = entry->get_input_section_size(i); |
1608 | } | |
1609 | Swap32::writeval(pov, name_offset); | |
1610 | Swap32::writeval(pov + 4, out_shndx); | |
1611 | Swap::writeval(pov + 8, out_offset); | |
1612 | Swap::writeval(pov + 8 + sizeof_addr, sh_size); | |
f038d496 CC |
1613 | gold_assert(this->input_section_entry_size |
1614 | == 8 + 2 * sizeof_addr); | |
1615 | pov += this->input_section_entry_size; | |
09ec0418 CC |
1616 | } |
1617 | ||
1618 | // For each global symbol, write its associated relocations, | |
1619 | // add it to the linked list of globals, then write the | |
1620 | // supplemental information: global symbol table index, | |
cdc29364 CC |
1621 | // input section index, linked list chain pointer, relocation |
1622 | // count, and offset to the relocations. | |
09ec0418 CC |
1623 | for (unsigned int i = 0; i < nsyms; i++) |
1624 | { | |
1625 | const Symbol* sym = (*syms)[i]; | |
793990de CC |
1626 | if (sym->is_forwarder()) |
1627 | sym = this->symtab_->resolve_forwards(sym); | |
cdc29364 | 1628 | unsigned int shndx = 0; |
5146f448 CC |
1629 | if (sym->source() != Symbol::FROM_OBJECT) |
1630 | { | |
1631 | // The symbol was defined by the linker (e.g., common). | |
1632 | // We mark these symbols with a special SHNDX of -1, | |
1633 | // but exclude linker-predefined symbols and symbols | |
1634 | // copied from shared objects. | |
1635 | if (!sym->is_predefined() | |
2e702c99 | 1636 | && !sym->is_copied_from_dynobj()) |
5146f448 CC |
1637 | shndx = -1U; |
1638 | } | |
1639 | else if (sym->object() == obj && sym->is_defined()) | |
cdc29364 CC |
1640 | { |
1641 | bool is_ordinary; | |
1642 | unsigned int orig_shndx = sym->shndx(&is_ordinary); | |
1643 | if (is_ordinary) | |
1644 | shndx = index_map[orig_shndx]; | |
5146f448 CC |
1645 | else |
1646 | shndx = 1; | |
cdc29364 | 1647 | } |
09ec0418 CC |
1648 | unsigned int symtab_index = sym->symtab_index(); |
1649 | unsigned int chain = 0; | |
1650 | unsigned int first_reloc = 0; | |
1651 | unsigned int nrelocs = obj->get_incremental_reloc_count(i); | |
1652 | if (nrelocs > 0) | |
1653 | { | |
1654 | gold_assert(symtab_index != -1U | |
1655 | && (symtab_index - first_global_index | |
1656 | < global_sym_count)); | |
1657 | first_reloc = obj->get_incremental_reloc_base(i); | |
1658 | chain = global_syms[symtab_index - first_global_index]; | |
1659 | global_syms[symtab_index - first_global_index] = | |
1660 | pov - oview; | |
1661 | } | |
1662 | Swap32::writeval(pov, symtab_index); | |
cdc29364 CC |
1663 | Swap32::writeval(pov + 4, shndx); |
1664 | Swap32::writeval(pov + 8, chain); | |
1665 | Swap32::writeval(pov + 12, nrelocs); | |
c335b55d L |
1666 | Swap32::writeval(pov + 16, |
1667 | first_reloc * (8 + 2 * sizeof_addr)); | |
f038d496 CC |
1668 | gold_assert(this->global_sym_entry_size == 20); |
1669 | pov += this->global_sym_entry_size; | |
09ec0418 | 1670 | } |
cdc29364 | 1671 | |
89d8a36b CC |
1672 | // For each kept COMDAT group, write the group signature. |
1673 | for (unsigned int i = 0; i < ncomdat; i++) | |
1674 | { | |
1675 | Stringpool::Key key = entry->get_comdat_signature_key(i); | |
1676 | off_t name_offset = 0; | |
1677 | if (key != 0) | |
1678 | name_offset = strtab->get_offset_from_key(key); | |
1679 | Swap32::writeval(pov, name_offset); | |
1680 | pov += 4; | |
1681 | } | |
1682 | ||
cdc29364 | 1683 | delete[] index_map; |
09ec0418 CC |
1684 | } |
1685 | break; | |
1686 | ||
1687 | case INCREMENTAL_INPUT_SHARED_LIBRARY: | |
1688 | { | |
56f75c03 ILT |
1689 | gold_assert(static_cast<unsigned int>(pov - oview) |
1690 | == (*p)->get_info_offset()); | |
0f1c85a6 | 1691 | Incremental_dynobj_entry* entry = (*p)->dynobj_entry(); |
09ec0418 | 1692 | gold_assert(entry != NULL); |
26d3c67d CC |
1693 | Object* obj = entry->object(); |
1694 | Dynobj* dynobj = obj->dynobj(); | |
1695 | gold_assert(dynobj != NULL); | |
09ec0418 CC |
1696 | const Object::Symbols* syms = obj->get_global_symbols(); |
1697 | ||
0f1c85a6 CC |
1698 | // Write the soname string table index. |
1699 | section_offset_type soname_offset = | |
1700 | strtab->get_offset_from_key(entry->get_soname_key()); | |
1701 | Swap32::writeval(pov, soname_offset); | |
1702 | pov += 4; | |
1703 | ||
cdc29364 CC |
1704 | // Skip the global symbol count for now. |
1705 | unsigned char* orig_pov = pov; | |
09ec0418 CC |
1706 | pov += 4; |
1707 | ||
1708 | // For each global symbol, write the global symbol table index. | |
cdc29364 CC |
1709 | unsigned int nsyms = syms->size(); |
1710 | unsigned int nsyms_out = 0; | |
09ec0418 CC |
1711 | for (unsigned int i = 0; i < nsyms; i++) |
1712 | { | |
1713 | const Symbol* sym = (*syms)[i]; | |
cdc29364 CC |
1714 | if (sym == NULL) |
1715 | continue; | |
1716 | if (sym->is_forwarder()) | |
1717 | sym = this->symtab_->resolve_forwards(sym); | |
2e702c99 RM |
1718 | if (sym->symtab_index() == -1U) |
1719 | continue; | |
26d3c67d | 1720 | unsigned int flags = 0; |
f48b5fb7 CC |
1721 | // If the symbol has hidden or internal visibility, we |
1722 | // mark it as defined in the shared object so we don't | |
1723 | // try to resolve it during an incremental update. | |
1724 | if (sym->visibility() == elfcpp::STV_HIDDEN | |
1725 | || sym->visibility() == elfcpp::STV_INTERNAL) | |
1726 | flags = INCREMENTAL_SHLIB_SYM_DEF; | |
1727 | else if (sym->source() == Symbol::FROM_OBJECT | |
1728 | && sym->object() == obj | |
1729 | && sym->is_defined()) | |
26d3c67d CC |
1730 | flags = INCREMENTAL_SHLIB_SYM_DEF; |
1731 | else if (sym->is_copied_from_dynobj() | |
1732 | && this->symtab_->get_copy_source(sym) == dynobj) | |
1733 | flags = INCREMENTAL_SHLIB_SYM_COPY; | |
1734 | flags <<= INCREMENTAL_SHLIB_SYM_FLAGS_SHIFT; | |
1735 | Swap32::writeval(pov, sym->symtab_index() | flags); | |
09ec0418 | 1736 | pov += 4; |
cdc29364 | 1737 | ++nsyms_out; |
09ec0418 | 1738 | } |
cdc29364 CC |
1739 | |
1740 | // Now write the global symbol count. | |
1741 | Swap32::writeval(orig_pov, nsyms_out); | |
09ec0418 CC |
1742 | } |
1743 | break; | |
1744 | ||
1745 | case INCREMENTAL_INPUT_ARCHIVE: | |
1746 | { | |
56f75c03 ILT |
1747 | gold_assert(static_cast<unsigned int>(pov - oview) |
1748 | == (*p)->get_info_offset()); | |
09ec0418 CC |
1749 | Incremental_archive_entry* entry = (*p)->archive_entry(); |
1750 | gold_assert(entry != NULL); | |
1751 | ||
1752 | // Write the member count and unused global symbol count. | |
1753 | unsigned int nmembers = entry->get_member_count(); | |
1754 | unsigned int nsyms = entry->get_unused_global_symbol_count(); | |
1755 | Swap32::writeval(pov, nmembers); | |
1756 | Swap32::writeval(pov + 4, nsyms); | |
1757 | pov += 8; | |
1758 | ||
1759 | // For each member, write the offset to its input file entry. | |
1760 | for (unsigned int i = 0; i < nmembers; ++i) | |
1761 | { | |
1762 | Incremental_object_entry* member = entry->get_member(i); | |
1763 | Swap32::writeval(pov, member->get_offset()); | |
1764 | pov += 4; | |
1765 | } | |
1766 | ||
1767 | // For each global symbol, write the name offset. | |
1768 | for (unsigned int i = 0; i < nsyms; ++i) | |
1769 | { | |
1770 | Stringpool::Key key = entry->get_unused_global_symbol(i); | |
1771 | Swap32::writeval(pov, strtab->get_offset_from_key(key)); | |
1772 | pov += 4; | |
1773 | } | |
1774 | } | |
1775 | break; | |
1776 | ||
1777 | default: | |
1778 | gold_unreachable(); | |
1779 | } | |
f038d496 CC |
1780 | |
1781 | // Pad the info block to a multiple of 8 bytes. | |
1782 | if (static_cast<unsigned int>(pov - oview) & 4) | |
1783 | { | |
1784 | Swap32::writeval(pov, 0); | |
1785 | pov += 4; | |
1786 | } | |
09ec0418 CC |
1787 | } |
1788 | return pov; | |
1789 | } | |
1790 | ||
1791 | // Write the contents of the .gnu_incremental_symtab section. | |
1792 | ||
1793 | template<int size, bool big_endian> | |
1794 | void | |
1795 | Output_section_incremental_inputs<size, big_endian>::write_symtab( | |
1796 | unsigned char* pov, | |
1797 | unsigned int* global_syms, | |
1798 | unsigned int global_sym_count) | |
1799 | { | |
1800 | for (unsigned int i = 0; i < global_sym_count; ++i) | |
1801 | { | |
1802 | Swap32::writeval(pov, global_syms[i]); | |
1803 | pov += 4; | |
1804 | } | |
3ce2c28e ILT |
1805 | } |
1806 | ||
0e70b911 CC |
1807 | // This struct holds the view information needed to write the |
1808 | // .gnu_incremental_got_plt section. | |
1809 | ||
1810 | struct Got_plt_view_info | |
1811 | { | |
1812 | // Start of the GOT type array in the output view. | |
1813 | unsigned char* got_type_p; | |
1814 | // Start of the GOT descriptor array in the output view. | |
1815 | unsigned char* got_desc_p; | |
1816 | // Start of the PLT descriptor array in the output view. | |
1817 | unsigned char* plt_desc_p; | |
1818 | // Number of GOT entries. | |
1819 | unsigned int got_count; | |
1820 | // Number of PLT entries. | |
1821 | unsigned int plt_count; | |
1822 | // Offset of the first non-reserved PLT entry (this is a target-dependent value). | |
1823 | unsigned int first_plt_entry_offset; | |
1824 | // Size of a PLT entry (this is a target-dependent value). | |
1825 | unsigned int plt_entry_size; | |
41e83f2b L |
1826 | // Size of a GOT entry (this is a target-dependent value). |
1827 | unsigned int got_entry_size; | |
6fa2a40b CC |
1828 | // Symbol index to write in the GOT descriptor array. For global symbols, |
1829 | // this is the global symbol table index; for local symbols, it is the | |
1830 | // local symbol table index. | |
1831 | unsigned int sym_index; | |
1832 | // Input file index to write in the GOT descriptor array. For global | |
1833 | // symbols, this is 0; for local symbols, it is the index of the input | |
1834 | // file entry in the .gnu_incremental_inputs section. | |
1835 | unsigned int input_index; | |
0e70b911 CC |
1836 | }; |
1837 | ||
1838 | // Functor class for processing a GOT offset list for local symbols. | |
1839 | // Writes the GOT type and symbol index into the GOT type and descriptor | |
1840 | // arrays in the output section. | |
1841 | ||
1842 | template<int size, bool big_endian> | |
cdc29364 | 1843 | class Local_got_offset_visitor : public Got_offset_list::Visitor |
0e70b911 CC |
1844 | { |
1845 | public: | |
1846 | Local_got_offset_visitor(struct Got_plt_view_info& info) | |
1847 | : info_(info) | |
1848 | { } | |
1849 | ||
1850 | void | |
cdc29364 | 1851 | visit(unsigned int got_type, unsigned int got_offset) |
0e70b911 | 1852 | { |
41e83f2b | 1853 | unsigned int got_index = got_offset / this->info_.got_entry_size; |
0e70b911 CC |
1854 | gold_assert(got_index < this->info_.got_count); |
1855 | // We can only handle GOT entry types in the range 0..0x7e | |
1856 | // because we use a byte array to store them, and we use the | |
1857 | // high bit to flag a local symbol. | |
1858 | gold_assert(got_type < 0x7f); | |
1859 | this->info_.got_type_p[got_index] = got_type | 0x80; | |
6fa2a40b CC |
1860 | unsigned char* pov = this->info_.got_desc_p + got_index * 8; |
1861 | elfcpp::Swap<32, big_endian>::writeval(pov, this->info_.sym_index); | |
1862 | elfcpp::Swap<32, big_endian>::writeval(pov + 4, this->info_.input_index); | |
0e70b911 CC |
1863 | } |
1864 | ||
1865 | private: | |
0e70b911 CC |
1866 | struct Got_plt_view_info& info_; |
1867 | }; | |
1868 | ||
1869 | // Functor class for processing a GOT offset list. Writes the GOT type | |
1870 | // and symbol index into the GOT type and descriptor arrays in the output | |
1871 | // section. | |
1872 | ||
1873 | template<int size, bool big_endian> | |
cdc29364 | 1874 | class Global_got_offset_visitor : public Got_offset_list::Visitor |
0e70b911 CC |
1875 | { |
1876 | public: | |
1877 | Global_got_offset_visitor(struct Got_plt_view_info& info) | |
1878 | : info_(info) | |
1879 | { } | |
1880 | ||
1881 | void | |
cdc29364 | 1882 | visit(unsigned int got_type, unsigned int got_offset) |
0e70b911 | 1883 | { |
41e83f2b | 1884 | unsigned int got_index = got_offset / this->info_.got_entry_size; |
0e70b911 CC |
1885 | gold_assert(got_index < this->info_.got_count); |
1886 | // We can only handle GOT entry types in the range 0..0x7e | |
1887 | // because we use a byte array to store them, and we use the | |
1888 | // high bit to flag a local symbol. | |
1889 | gold_assert(got_type < 0x7f); | |
1890 | this->info_.got_type_p[got_index] = got_type; | |
6fa2a40b CC |
1891 | unsigned char* pov = this->info_.got_desc_p + got_index * 8; |
1892 | elfcpp::Swap<32, big_endian>::writeval(pov, this->info_.sym_index); | |
1893 | elfcpp::Swap<32, big_endian>::writeval(pov + 4, 0); | |
0e70b911 CC |
1894 | } |
1895 | ||
1896 | private: | |
0e70b911 CC |
1897 | struct Got_plt_view_info& info_; |
1898 | }; | |
1899 | ||
1900 | // Functor class for processing the global symbol table. Processes the | |
1901 | // GOT offset list for the symbol, and writes the symbol table index | |
1902 | // into the PLT descriptor array in the output section. | |
1903 | ||
1904 | template<int size, bool big_endian> | |
1905 | class Global_symbol_visitor_got_plt | |
1906 | { | |
1907 | public: | |
1908 | Global_symbol_visitor_got_plt(struct Got_plt_view_info& info) | |
1909 | : info_(info) | |
1910 | { } | |
1911 | ||
1912 | void | |
1913 | operator()(const Sized_symbol<size>* sym) | |
1914 | { | |
1915 | typedef Global_got_offset_visitor<size, big_endian> Got_visitor; | |
1916 | const Got_offset_list* got_offsets = sym->got_offset_list(); | |
1917 | if (got_offsets != NULL) | |
1918 | { | |
2e702c99 RM |
1919 | this->info_.sym_index = sym->symtab_index(); |
1920 | this->info_.input_index = 0; | |
1921 | Got_visitor v(this->info_); | |
cdc29364 | 1922 | got_offsets->for_all_got_offsets(&v); |
0e70b911 CC |
1923 | } |
1924 | if (sym->has_plt_offset()) | |
1925 | { | |
1926 | unsigned int plt_index = | |
1927 | ((sym->plt_offset() - this->info_.first_plt_entry_offset) | |
1928 | / this->info_.plt_entry_size); | |
1929 | gold_assert(plt_index < this->info_.plt_count); | |
1930 | unsigned char* pov = this->info_.plt_desc_p + plt_index * 4; | |
1931 | elfcpp::Swap<32, big_endian>::writeval(pov, sym->symtab_index()); | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | private: | |
1936 | struct Got_plt_view_info& info_; | |
1937 | }; | |
1938 | ||
1939 | // Write the contents of the .gnu_incremental_got_plt section. | |
1940 | ||
1941 | template<int size, bool big_endian> | |
1942 | void | |
1943 | Output_section_incremental_inputs<size, big_endian>::write_got_plt( | |
1944 | unsigned char* pov, | |
1945 | off_t view_size) | |
1946 | { | |
1947 | Sized_target<size, big_endian>* target = | |
1948 | parameters->sized_target<size, big_endian>(); | |
1949 | ||
1950 | // Set up the view information for the functors. | |
1951 | struct Got_plt_view_info view_info; | |
1952 | view_info.got_count = target->got_entry_count(); | |
1953 | view_info.plt_count = target->plt_entry_count(); | |
1954 | view_info.first_plt_entry_offset = target->first_plt_entry_offset(); | |
1955 | view_info.plt_entry_size = target->plt_entry_size(); | |
41e83f2b | 1956 | view_info.got_entry_size = target->got_entry_size(); |
0e70b911 CC |
1957 | view_info.got_type_p = pov + 8; |
1958 | view_info.got_desc_p = (view_info.got_type_p | |
1959 | + ((view_info.got_count + 3) & ~3)); | |
6fa2a40b | 1960 | view_info.plt_desc_p = view_info.got_desc_p + view_info.got_count * 8; |
0e70b911 CC |
1961 | |
1962 | gold_assert(pov + view_size == | |
1963 | view_info.plt_desc_p + view_info.plt_count * 4); | |
1964 | ||
1965 | // Write the section header. | |
1966 | Swap32::writeval(pov, view_info.got_count); | |
1967 | Swap32::writeval(pov + 4, view_info.plt_count); | |
1968 | ||
1969 | // Initialize the GOT type array to 0xff (reserved). | |
1970 | memset(view_info.got_type_p, 0xff, view_info.got_count); | |
1971 | ||
1972 | // Write the incremental GOT descriptors for local symbols. | |
cdc29364 | 1973 | typedef Local_got_offset_visitor<size, big_endian> Got_visitor; |
0e70b911 CC |
1974 | for (Incremental_inputs::Input_list::const_iterator p = |
1975 | this->inputs_->input_files().begin(); | |
1976 | p != this->inputs_->input_files().end(); | |
1977 | ++p) | |
1978 | { | |
1979 | if ((*p)->type() != INCREMENTAL_INPUT_OBJECT | |
1980 | && (*p)->type() != INCREMENTAL_INPUT_ARCHIVE_MEMBER) | |
1981 | continue; | |
1982 | Incremental_object_entry* entry = (*p)->object_entry(); | |
1983 | gold_assert(entry != NULL); | |
cdc29364 | 1984 | const Object* obj = entry->object(); |
0e70b911 | 1985 | gold_assert(obj != NULL); |
6fa2a40b | 1986 | view_info.input_index = (*p)->get_file_index(); |
cdc29364 CC |
1987 | Got_visitor v(view_info); |
1988 | obj->for_all_local_got_entries(&v); | |
0e70b911 CC |
1989 | } |
1990 | ||
1991 | // Write the incremental GOT and PLT descriptors for global symbols. | |
1992 | typedef Global_symbol_visitor_got_plt<size, big_endian> Symbol_visitor; | |
1993 | symtab_->for_all_symbols<size, Symbol_visitor>(Symbol_visitor(view_info)); | |
1994 | } | |
1995 | ||
6fa2a40b | 1996 | // Class Sized_relobj_incr. Most of these methods are not used for |
cdc29364 CC |
1997 | // Incremental objects, but are required to be implemented by the |
1998 | // base class Object. | |
1999 | ||
2000 | template<int size, bool big_endian> | |
6fa2a40b | 2001 | Sized_relobj_incr<size, big_endian>::Sized_relobj_incr( |
cdc29364 CC |
2002 | const std::string& name, |
2003 | Sized_incremental_binary<size, big_endian>* ibase, | |
2004 | unsigned int input_file_index) | |
6fa2a40b | 2005 | : Sized_relobj<size, big_endian>(name, NULL), ibase_(ibase), |
cdc29364 CC |
2006 | input_file_index_(input_file_index), |
2007 | input_reader_(ibase->inputs_reader().input_file(input_file_index)), | |
f0f9babf CC |
2008 | local_symbol_count_(0), output_local_dynsym_count_(0), |
2009 | local_symbol_index_(0), local_symbol_offset_(0), local_dynsym_offset_(0), | |
53bbcc1b CC |
2010 | symbols_(), defined_count_(0), incr_reloc_offset_(-1U), |
2011 | incr_reloc_count_(0), incr_reloc_output_index_(0), incr_relocs_(NULL), | |
2012 | local_symbols_() | |
cdc29364 CC |
2013 | { |
2014 | if (this->input_reader_.is_in_system_directory()) | |
2015 | this->set_is_in_system_directory(); | |
2016 | const unsigned int shnum = this->input_reader_.get_input_section_count() + 1; | |
2017 | this->set_shnum(shnum); | |
6fa2a40b | 2018 | ibase->set_input_object(input_file_index, this); |
cdc29364 CC |
2019 | } |
2020 | ||
2021 | // Read the symbols. | |
2022 | ||
2023 | template<int size, bool big_endian> | |
2024 | void | |
6fa2a40b | 2025 | Sized_relobj_incr<size, big_endian>::do_read_symbols(Read_symbols_data*) |
cdc29364 CC |
2026 | { |
2027 | gold_unreachable(); | |
2028 | } | |
2029 | ||
2030 | // Lay out the input sections. | |
2031 | ||
2032 | template<int size, bool big_endian> | |
2033 | void | |
6fa2a40b | 2034 | Sized_relobj_incr<size, big_endian>::do_layout( |
cdc29364 CC |
2035 | Symbol_table*, |
2036 | Layout* layout, | |
2037 | Read_symbols_data*) | |
2038 | { | |
2039 | const unsigned int shnum = this->shnum(); | |
2040 | Incremental_inputs* incremental_inputs = layout->incremental_inputs(); | |
2041 | gold_assert(incremental_inputs != NULL); | |
2042 | Output_sections& out_sections(this->output_sections()); | |
2043 | out_sections.resize(shnum); | |
6fa2a40b | 2044 | this->section_offsets().resize(shnum); |
c1027032 CC |
2045 | |
2046 | // Keep track of .debug_info and .debug_types sections. | |
2047 | std::vector<unsigned int> debug_info_sections; | |
2048 | std::vector<unsigned int> debug_types_sections; | |
2049 | ||
cdc29364 CC |
2050 | for (unsigned int i = 1; i < shnum; i++) |
2051 | { | |
2052 | typename Input_entry_reader::Input_section_info sect = | |
2e702c99 | 2053 | this->input_reader_.get_input_section(i - 1); |
cdc29364 CC |
2054 | // Add the section to the incremental inputs layout. |
2055 | incremental_inputs->report_input_section(this, i, sect.name, | |
2056 | sect.sh_size); | |
2057 | if (sect.output_shndx == 0 || sect.sh_offset == -1) | |
2e702c99 | 2058 | continue; |
cdc29364 CC |
2059 | Output_section* os = this->ibase_->output_section(sect.output_shndx); |
2060 | gold_assert(os != NULL); | |
2061 | out_sections[i] = os; | |
6fa2a40b | 2062 | this->section_offsets()[i] = static_cast<Address>(sect.sh_offset); |
c1027032 CC |
2063 | |
2064 | // When generating a .gdb_index section, we do additional | |
2065 | // processing of .debug_info and .debug_types sections after all | |
2066 | // the other sections. | |
2067 | if (parameters->options().gdb_index()) | |
2068 | { | |
2069 | const char* name = os->name(); | |
2070 | if (strcmp(name, ".debug_info") == 0) | |
2071 | debug_info_sections.push_back(i); | |
2072 | else if (strcmp(name, ".debug_types") == 0) | |
2073 | debug_types_sections.push_back(i); | |
2074 | } | |
cdc29364 | 2075 | } |
89d8a36b CC |
2076 | |
2077 | // Process the COMDAT groups. | |
2078 | unsigned int ncomdat = this->input_reader_.get_comdat_group_count(); | |
2079 | for (unsigned int i = 0; i < ncomdat; i++) | |
2080 | { | |
2081 | const char* signature = this->input_reader_.get_comdat_group_signature(i); | |
2082 | if (signature == NULL || signature[0] == '\0') | |
2e702c99 | 2083 | this->error(_("COMDAT group has no signature")); |
89d8a36b CC |
2084 | bool keep = layout->find_or_add_kept_section(signature, this, i, true, |
2085 | true, NULL); | |
1206d0d5 CC |
2086 | if (keep) |
2087 | incremental_inputs->report_comdat_group(this, signature); | |
2088 | else | |
2e702c99 | 2089 | this->error(_("COMDAT group %s included twice in incremental link"), |
89d8a36b CC |
2090 | signature); |
2091 | } | |
c1027032 CC |
2092 | |
2093 | // When building a .gdb_index section, scan the .debug_info and | |
2094 | // .debug_types sections. | |
2095 | for (std::vector<unsigned int>::const_iterator p | |
2096 | = debug_info_sections.begin(); | |
2097 | p != debug_info_sections.end(); | |
2098 | ++p) | |
2099 | { | |
2100 | unsigned int i = *p; | |
2101 | layout->add_to_gdb_index(false, this, NULL, 0, i, 0, 0); | |
2102 | } | |
2103 | for (std::vector<unsigned int>::const_iterator p | |
2104 | = debug_types_sections.begin(); | |
2105 | p != debug_types_sections.end(); | |
2106 | ++p) | |
2107 | { | |
2108 | unsigned int i = *p; | |
2109 | layout->add_to_gdb_index(true, this, 0, 0, i, 0, 0); | |
2110 | } | |
cdc29364 CC |
2111 | } |
2112 | ||
2113 | // Layout sections whose layout was deferred while waiting for | |
2114 | // input files from a plugin. | |
2115 | template<int size, bool big_endian> | |
2116 | void | |
6fa2a40b | 2117 | Sized_relobj_incr<size, big_endian>::do_layout_deferred_sections(Layout*) |
cdc29364 CC |
2118 | { |
2119 | } | |
2120 | ||
2121 | // Add the symbols to the symbol table. | |
2122 | ||
2123 | template<int size, bool big_endian> | |
2124 | void | |
6fa2a40b | 2125 | Sized_relobj_incr<size, big_endian>::do_add_symbols( |
cdc29364 CC |
2126 | Symbol_table* symtab, |
2127 | Read_symbols_data*, | |
2128 | Layout*) | |
2129 | { | |
2130 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2131 | unsigned char symbuf[sym_size]; | |
2132 | elfcpp::Sym<size, big_endian> sym(symbuf); | |
2133 | elfcpp::Sym_write<size, big_endian> osym(symbuf); | |
2134 | ||
2135 | typedef typename elfcpp::Elf_types<size>::Elf_WXword Elf_size_type; | |
2136 | ||
2137 | unsigned int nsyms = this->input_reader_.get_global_symbol_count(); | |
2138 | this->symbols_.resize(nsyms); | |
2139 | ||
2140 | Incremental_binary::View symtab_view(NULL); | |
2141 | unsigned int symtab_count; | |
2142 | elfcpp::Elf_strtab strtab(NULL, 0); | |
2143 | this->ibase_->get_symtab_view(&symtab_view, &symtab_count, &strtab); | |
2144 | ||
94a3fc8b CC |
2145 | Incremental_symtab_reader<big_endian> isymtab(this->ibase_->symtab_reader()); |
2146 | unsigned int isym_count = isymtab.symbol_count(); | |
2147 | unsigned int first_global = symtab_count - isym_count; | |
cdc29364 | 2148 | |
f0f9babf | 2149 | const unsigned char* sym_p; |
cdc29364 CC |
2150 | for (unsigned int i = 0; i < nsyms; ++i) |
2151 | { | |
2152 | Incremental_global_symbol_reader<big_endian> info = | |
2153 | this->input_reader_.get_global_symbol_reader(i); | |
94a3fc8b CC |
2154 | unsigned int output_symndx = info.output_symndx(); |
2155 | sym_p = symtab_view.data() + output_symndx * sym_size; | |
cdc29364 CC |
2156 | elfcpp::Sym<size, big_endian> gsym(sym_p); |
2157 | const char* name; | |
2158 | if (!strtab.get_c_string(gsym.get_st_name(), &name)) | |
2159 | name = ""; | |
2160 | ||
11e361bc | 2161 | typename elfcpp::Elf_types<size>::Elf_Addr v = gsym.get_st_value(); |
cdc29364 CC |
2162 | unsigned int shndx = gsym.get_st_shndx(); |
2163 | elfcpp::STB st_bind = gsym.get_st_bind(); | |
2164 | elfcpp::STT st_type = gsym.get_st_type(); | |
2165 | ||
2166 | // Local hidden symbols start out as globals, but get converted to | |
2167 | // to local during output. | |
2168 | if (st_bind == elfcpp::STB_LOCAL) | |
2e702c99 | 2169 | st_bind = elfcpp::STB_GLOBAL; |
cdc29364 CC |
2170 | |
2171 | unsigned int input_shndx = info.shndx(); | |
5146f448 | 2172 | if (input_shndx == 0 || input_shndx == -1U) |
cdc29364 CC |
2173 | { |
2174 | shndx = elfcpp::SHN_UNDEF; | |
2175 | v = 0; | |
2176 | } | |
2177 | else if (shndx != elfcpp::SHN_ABS) | |
2178 | { | |
2179 | // Find the input section and calculate the section-relative value. | |
2180 | gold_assert(shndx != elfcpp::SHN_UNDEF); | |
cdc29364 CC |
2181 | Output_section* os = this->ibase_->output_section(shndx); |
2182 | gold_assert(os != NULL && os->has_fixed_layout()); | |
2183 | typename Input_entry_reader::Input_section_info sect = | |
2184 | this->input_reader_.get_input_section(input_shndx - 1); | |
2185 | gold_assert(sect.output_shndx == shndx); | |
2186 | if (st_type != elfcpp::STT_TLS) | |
2187 | v -= os->address(); | |
2188 | v -= sect.sh_offset; | |
2189 | shndx = input_shndx; | |
2190 | } | |
2191 | ||
2192 | osym.put_st_name(0); | |
2193 | osym.put_st_value(v); | |
2194 | osym.put_st_size(gsym.get_st_size()); | |
2195 | osym.put_st_info(st_bind, st_type); | |
2196 | osym.put_st_other(gsym.get_st_other()); | |
2197 | osym.put_st_shndx(shndx); | |
2198 | ||
5146f448 CC |
2199 | Symbol* res = symtab->add_from_incrobj(this, name, NULL, &sym); |
2200 | ||
53bbcc1b | 2201 | if (shndx != elfcpp::SHN_UNDEF) |
2e702c99 | 2202 | ++this->defined_count_; |
53bbcc1b | 2203 | |
5146f448 CC |
2204 | // If this is a linker-defined symbol that hasn't yet been defined, |
2205 | // define it now. | |
2206 | if (input_shndx == -1U && !res->is_defined()) | |
2207 | { | |
2208 | shndx = gsym.get_st_shndx(); | |
2209 | v = gsym.get_st_value(); | |
2210 | Elf_size_type symsize = gsym.get_st_size(); | |
2211 | if (shndx == elfcpp::SHN_ABS) | |
2212 | { | |
2213 | symtab->define_as_constant(name, NULL, | |
2214 | Symbol_table::INCREMENTAL_BASE, | |
2215 | v, symsize, st_type, st_bind, | |
2216 | gsym.get_st_visibility(), 0, | |
2217 | false, false); | |
2218 | } | |
2219 | else | |
2220 | { | |
2221 | Output_section* os = this->ibase_->output_section(shndx); | |
2222 | gold_assert(os != NULL && os->has_fixed_layout()); | |
2223 | v -= os->address(); | |
2224 | if (symsize > 0) | |
2225 | os->reserve(v, symsize); | |
2226 | symtab->define_in_output_data(name, NULL, | |
2227 | Symbol_table::INCREMENTAL_BASE, | |
2228 | os, v, symsize, st_type, st_bind, | |
2229 | gsym.get_st_visibility(), 0, | |
2230 | false, false); | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | this->symbols_[i] = res; | |
2235 | this->ibase_->add_global_symbol(output_symndx - first_global, res); | |
cdc29364 CC |
2236 | } |
2237 | } | |
2238 | ||
2239 | // Return TRUE if we should include this object from an archive library. | |
2240 | ||
2241 | template<int size, bool big_endian> | |
2242 | Archive::Should_include | |
6fa2a40b | 2243 | Sized_relobj_incr<size, big_endian>::do_should_include_member( |
cdc29364 CC |
2244 | Symbol_table*, |
2245 | Layout*, | |
2246 | Read_symbols_data*, | |
2247 | std::string*) | |
2248 | { | |
2249 | gold_unreachable(); | |
2250 | } | |
2251 | ||
2252 | // Iterate over global symbols, calling a visitor class V for each. | |
2253 | ||
2254 | template<int size, bool big_endian> | |
2255 | void | |
6fa2a40b | 2256 | Sized_relobj_incr<size, big_endian>::do_for_all_global_symbols( |
cdc29364 CC |
2257 | Read_symbols_data*, |
2258 | Library_base::Symbol_visitor_base*) | |
2259 | { | |
2260 | // This routine is not used for incremental objects. | |
2261 | } | |
2262 | ||
cdc29364 CC |
2263 | // Get the size of a section. |
2264 | ||
2265 | template<int size, bool big_endian> | |
2266 | uint64_t | |
6fa2a40b | 2267 | Sized_relobj_incr<size, big_endian>::do_section_size(unsigned int) |
cdc29364 CC |
2268 | { |
2269 | gold_unreachable(); | |
2270 | } | |
2271 | ||
c1027032 CC |
2272 | // Get the name of a section. This returns the name of the output |
2273 | // section, because we don't usually track the names of the input | |
2274 | // sections. | |
cdc29364 CC |
2275 | |
2276 | template<int size, bool big_endian> | |
2277 | std::string | |
54674d38 | 2278 | Sized_relobj_incr<size, big_endian>::do_section_name(unsigned int shndx) const |
cdc29364 | 2279 | { |
54674d38 CC |
2280 | const Output_sections& out_sections(this->output_sections()); |
2281 | const Output_section* os = out_sections[shndx]; | |
c1027032 CC |
2282 | if (os == NULL) |
2283 | return NULL; | |
2284 | return os->name(); | |
cdc29364 CC |
2285 | } |
2286 | ||
2287 | // Return a view of the contents of a section. | |
2288 | ||
2289 | template<int size, bool big_endian> | |
c1027032 CC |
2290 | const unsigned char* |
2291 | Sized_relobj_incr<size, big_endian>::do_section_contents( | |
2292 | unsigned int shndx, | |
2293 | section_size_type* plen, | |
2294 | bool) | |
cdc29364 | 2295 | { |
c1027032 CC |
2296 | Output_sections& out_sections(this->output_sections()); |
2297 | Output_section* os = out_sections[shndx]; | |
2298 | gold_assert(os != NULL); | |
2299 | off_t section_offset = os->offset(); | |
2300 | typename Input_entry_reader::Input_section_info sect = | |
2301 | this->input_reader_.get_input_section(shndx - 1); | |
2302 | section_offset += sect.sh_offset; | |
2303 | *plen = sect.sh_size; | |
2304 | return this->ibase_->view(section_offset, sect.sh_size).data(); | |
cdc29364 CC |
2305 | } |
2306 | ||
2307 | // Return section flags. | |
2308 | ||
2309 | template<int size, bool big_endian> | |
2310 | uint64_t | |
6fa2a40b | 2311 | Sized_relobj_incr<size, big_endian>::do_section_flags(unsigned int) |
cdc29364 CC |
2312 | { |
2313 | gold_unreachable(); | |
2314 | } | |
2315 | ||
2316 | // Return section entsize. | |
2317 | ||
2318 | template<int size, bool big_endian> | |
2319 | uint64_t | |
6fa2a40b | 2320 | Sized_relobj_incr<size, big_endian>::do_section_entsize(unsigned int) |
cdc29364 CC |
2321 | { |
2322 | gold_unreachable(); | |
2323 | } | |
2324 | ||
2325 | // Return section address. | |
2326 | ||
2327 | template<int size, bool big_endian> | |
2328 | uint64_t | |
6fa2a40b | 2329 | Sized_relobj_incr<size, big_endian>::do_section_address(unsigned int) |
cdc29364 CC |
2330 | { |
2331 | gold_unreachable(); | |
2332 | } | |
2333 | ||
2334 | // Return section type. | |
2335 | ||
2336 | template<int size, bool big_endian> | |
2337 | unsigned int | |
6fa2a40b | 2338 | Sized_relobj_incr<size, big_endian>::do_section_type(unsigned int) |
cdc29364 CC |
2339 | { |
2340 | gold_unreachable(); | |
2341 | } | |
2342 | ||
2343 | // Return the section link field. | |
2344 | ||
2345 | template<int size, bool big_endian> | |
2346 | unsigned int | |
6fa2a40b | 2347 | Sized_relobj_incr<size, big_endian>::do_section_link(unsigned int) |
cdc29364 CC |
2348 | { |
2349 | gold_unreachable(); | |
2350 | } | |
2351 | ||
2352 | // Return the section link field. | |
2353 | ||
2354 | template<int size, bool big_endian> | |
2355 | unsigned int | |
6fa2a40b | 2356 | Sized_relobj_incr<size, big_endian>::do_section_info(unsigned int) |
cdc29364 CC |
2357 | { |
2358 | gold_unreachable(); | |
2359 | } | |
2360 | ||
2361 | // Return the section alignment. | |
2362 | ||
2363 | template<int size, bool big_endian> | |
2364 | uint64_t | |
6fa2a40b | 2365 | Sized_relobj_incr<size, big_endian>::do_section_addralign(unsigned int) |
cdc29364 CC |
2366 | { |
2367 | gold_unreachable(); | |
2368 | } | |
2369 | ||
2370 | // Return the Xindex structure to use. | |
2371 | ||
2372 | template<int size, bool big_endian> | |
2373 | Xindex* | |
6fa2a40b | 2374 | Sized_relobj_incr<size, big_endian>::do_initialize_xindex() |
cdc29364 CC |
2375 | { |
2376 | gold_unreachable(); | |
2377 | } | |
2378 | ||
2379 | // Get symbol counts. | |
2380 | ||
2381 | template<int size, bool big_endian> | |
2382 | void | |
6fa2a40b | 2383 | Sized_relobj_incr<size, big_endian>::do_get_global_symbol_counts( |
53bbcc1b CC |
2384 | const Symbol_table*, |
2385 | size_t* defined, | |
2386 | size_t* used) const | |
2387 | { | |
2388 | *defined = this->defined_count_; | |
2389 | size_t count = 0; | |
2390 | for (typename Symbols::const_iterator p = this->symbols_.begin(); | |
2391 | p != this->symbols_.end(); | |
2392 | ++p) | |
2393 | if (*p != NULL | |
2394 | && (*p)->source() == Symbol::FROM_OBJECT | |
2395 | && (*p)->object() == this | |
2396 | && (*p)->is_defined()) | |
2397 | ++count; | |
2398 | *used = count; | |
cdc29364 CC |
2399 | } |
2400 | ||
2401 | // Read the relocs. | |
2402 | ||
2403 | template<int size, bool big_endian> | |
2404 | void | |
6fa2a40b | 2405 | Sized_relobj_incr<size, big_endian>::do_read_relocs(Read_relocs_data*) |
cdc29364 CC |
2406 | { |
2407 | } | |
2408 | ||
2409 | // Process the relocs to find list of referenced sections. Used only | |
2410 | // during garbage collection. | |
2411 | ||
2412 | template<int size, bool big_endian> | |
2413 | void | |
6fa2a40b | 2414 | Sized_relobj_incr<size, big_endian>::do_gc_process_relocs(Symbol_table*, |
cdc29364 CC |
2415 | Layout*, |
2416 | Read_relocs_data*) | |
2417 | { | |
2418 | gold_unreachable(); | |
2419 | } | |
2420 | ||
2421 | // Scan the relocs and adjust the symbol table. | |
2422 | ||
2423 | template<int size, bool big_endian> | |
2424 | void | |
6fa2a40b | 2425 | Sized_relobj_incr<size, big_endian>::do_scan_relocs(Symbol_table*, |
cdc29364 CC |
2426 | Layout* layout, |
2427 | Read_relocs_data*) | |
2428 | { | |
2429 | // Count the incremental relocations for this object. | |
2430 | unsigned int nsyms = this->input_reader_.get_global_symbol_count(); | |
2431 | this->allocate_incremental_reloc_counts(); | |
2432 | for (unsigned int i = 0; i < nsyms; i++) | |
2433 | { | |
2434 | Incremental_global_symbol_reader<big_endian> sym = | |
2435 | this->input_reader_.get_global_symbol_reader(i); | |
2436 | unsigned int reloc_count = sym.reloc_count(); | |
2437 | if (reloc_count > 0 && this->incr_reloc_offset_ == -1U) | |
2438 | this->incr_reloc_offset_ = sym.reloc_offset(); | |
2439 | this->incr_reloc_count_ += reloc_count; | |
2440 | for (unsigned int j = 0; j < reloc_count; j++) | |
2441 | this->count_incremental_reloc(i); | |
2442 | } | |
2443 | this->incr_reloc_output_index_ = | |
2444 | layout->incremental_inputs()->get_reloc_count(); | |
2445 | this->finalize_incremental_relocs(layout, false); | |
2446 | ||
2447 | // The incoming incremental relocations may not end up in the same | |
2448 | // location after the incremental update, because the incremental info | |
2449 | // is regenerated in each link. Because the new location may overlap | |
2450 | // with other data in the updated output file, we need to copy the | |
2451 | // relocations into a buffer so that we can still read them safely | |
2452 | // after we start writing updates to the output file. | |
2453 | if (this->incr_reloc_count_ > 0) | |
2454 | { | |
2455 | const Incremental_relocs_reader<size, big_endian>& relocs_reader = | |
2456 | this->ibase_->relocs_reader(); | |
2457 | const unsigned int incr_reloc_size = relocs_reader.reloc_size; | |
2458 | unsigned int len = this->incr_reloc_count_ * incr_reloc_size; | |
2459 | this->incr_relocs_ = new unsigned char[len]; | |
2460 | memcpy(this->incr_relocs_, | |
2461 | relocs_reader.data(this->incr_reloc_offset_), | |
2462 | len); | |
2463 | } | |
2464 | } | |
2465 | ||
2466 | // Count the local symbols. | |
2467 | ||
2468 | template<int size, bool big_endian> | |
2469 | void | |
6fa2a40b | 2470 | Sized_relobj_incr<size, big_endian>::do_count_local_symbols( |
f0f9babf | 2471 | Stringpool_template<char>* pool, |
cdc29364 CC |
2472 | Stringpool_template<char>*) |
2473 | { | |
f0f9babf CC |
2474 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
2475 | ||
2476 | // Set the count of local symbols based on the incremental info. | |
2477 | unsigned int nlocals = this->input_reader_.get_local_symbol_count(); | |
2478 | this->local_symbol_count_ = nlocals; | |
2479 | this->local_symbols_.reserve(nlocals); | |
2480 | ||
2481 | // Get views of the base file's symbol table and string table. | |
2482 | Incremental_binary::View symtab_view(NULL); | |
2483 | unsigned int symtab_count; | |
2484 | elfcpp::Elf_strtab strtab(NULL, 0); | |
2485 | this->ibase_->get_symtab_view(&symtab_view, &symtab_count, &strtab); | |
2486 | ||
2487 | // Read the local symbols from the base file's symbol table. | |
2488 | off_t off = this->input_reader_.get_local_symbol_offset(); | |
2489 | const unsigned char* symp = symtab_view.data() + off; | |
2490 | for (unsigned int i = 0; i < nlocals; ++i, symp += sym_size) | |
2491 | { | |
2492 | elfcpp::Sym<size, big_endian> sym(symp); | |
2493 | const char* name; | |
2494 | if (!strtab.get_c_string(sym.get_st_name(), &name)) | |
2e702c99 | 2495 | name = ""; |
f0f9babf CC |
2496 | gold_debug(DEBUG_INCREMENTAL, "Local symbol %d: %s", i, name); |
2497 | name = pool->add(name, true, NULL); | |
2498 | this->local_symbols_.push_back(Local_symbol(name, | |
2499 | sym.get_st_value(), | |
2500 | sym.get_st_size(), | |
2501 | sym.get_st_shndx(), | |
2502 | sym.get_st_type(), | |
2503 | false)); | |
2504 | } | |
cdc29364 CC |
2505 | } |
2506 | ||
2507 | // Finalize the local symbols. | |
2508 | ||
2509 | template<int size, bool big_endian> | |
2510 | unsigned int | |
6fa2a40b | 2511 | Sized_relobj_incr<size, big_endian>::do_finalize_local_symbols( |
cdc29364 | 2512 | unsigned int index, |
f0f9babf | 2513 | off_t off, |
cdc29364 CC |
2514 | Symbol_table*) |
2515 | { | |
f0f9babf CC |
2516 | this->local_symbol_index_ = index; |
2517 | this->local_symbol_offset_ = off; | |
2518 | return index + this->local_symbol_count_; | |
cdc29364 CC |
2519 | } |
2520 | ||
2521 | // Set the offset where local dynamic symbol information will be stored. | |
2522 | ||
2523 | template<int size, bool big_endian> | |
2524 | unsigned int | |
6fa2a40b | 2525 | Sized_relobj_incr<size, big_endian>::do_set_local_dynsym_indexes( |
cdc29364 CC |
2526 | unsigned int index) |
2527 | { | |
2528 | // FIXME: set local dynsym indexes. | |
2529 | return index; | |
2530 | } | |
2531 | ||
2532 | // Set the offset where local dynamic symbol information will be stored. | |
2533 | ||
2534 | template<int size, bool big_endian> | |
2535 | unsigned int | |
6fa2a40b | 2536 | Sized_relobj_incr<size, big_endian>::do_set_local_dynsym_offset(off_t) |
cdc29364 CC |
2537 | { |
2538 | return 0; | |
2539 | } | |
2540 | ||
2541 | // Relocate the input sections and write out the local symbols. | |
2542 | // We don't actually do any relocation here. For unchanged input files, | |
2543 | // we reapply relocations only for symbols that have changed; that happens | |
158600eb CC |
2544 | // in Layout_task_runner::run(). We do need to rewrite the incremental |
2545 | // relocations for this object. | |
cdc29364 CC |
2546 | |
2547 | template<int size, bool big_endian> | |
2548 | void | |
6fa2a40b | 2549 | Sized_relobj_incr<size, big_endian>::do_relocate(const Symbol_table*, |
cdc29364 CC |
2550 | const Layout* layout, |
2551 | Output_file* of) | |
2552 | { | |
2553 | if (this->incr_reloc_count_ == 0) | |
2554 | return; | |
2555 | ||
2556 | const unsigned int incr_reloc_size = | |
2557 | Incremental_relocs_reader<size, big_endian>::reloc_size; | |
2558 | ||
2559 | // Get a view for the .gnu_incremental_relocs section. | |
2560 | Incremental_inputs* inputs = layout->incremental_inputs(); | |
2561 | gold_assert(inputs != NULL); | |
2562 | const off_t relocs_off = inputs->relocs_section()->offset(); | |
2563 | const off_t relocs_size = inputs->relocs_section()->data_size(); | |
2564 | unsigned char* const view = of->get_output_view(relocs_off, relocs_size); | |
2565 | ||
2566 | // Copy the relocations from the buffer. | |
2567 | off_t off = this->incr_reloc_output_index_ * incr_reloc_size; | |
2568 | unsigned int len = this->incr_reloc_count_ * incr_reloc_size; | |
2569 | memcpy(view + off, this->incr_relocs_, len); | |
94a3fc8b CC |
2570 | |
2571 | // The output section table may have changed, so we need to map | |
2572 | // the old section index to the new section index for each relocation. | |
2573 | for (unsigned int i = 0; i < this->incr_reloc_count_; ++i) | |
2574 | { | |
2575 | unsigned char* pov = view + off + i * incr_reloc_size; | |
2576 | unsigned int shndx = elfcpp::Swap<32, big_endian>::readval(pov + 4); | |
2577 | Output_section* os = this->ibase_->output_section(shndx); | |
2578 | gold_assert(os != NULL); | |
2579 | shndx = os->out_shndx(); | |
2580 | elfcpp::Swap<32, big_endian>::writeval(pov + 4, shndx); | |
2581 | } | |
2582 | ||
cdc29364 | 2583 | of->write_output_view(off, len, view); |
f0f9babf CC |
2584 | |
2585 | // Get views into the output file for the portions of the symbol table | |
2586 | // and the dynamic symbol table that we will be writing. | |
2587 | off_t symtab_off = layout->symtab_section()->offset(); | |
2588 | off_t output_size = this->local_symbol_count_ * This::sym_size; | |
2589 | unsigned char* oview = NULL; | |
2590 | if (output_size > 0) | |
2591 | oview = of->get_output_view(symtab_off + this->local_symbol_offset_, | |
2592 | output_size); | |
2593 | ||
2594 | off_t dyn_output_size = this->output_local_dynsym_count_ * sym_size; | |
2595 | unsigned char* dyn_oview = NULL; | |
2596 | if (dyn_output_size > 0) | |
2597 | dyn_oview = of->get_output_view(this->local_dynsym_offset_, | |
2e702c99 | 2598 | dyn_output_size); |
f0f9babf CC |
2599 | |
2600 | // Write the local symbols. | |
2601 | unsigned char* ov = oview; | |
2602 | unsigned char* dyn_ov = dyn_oview; | |
2603 | const Stringpool* sympool = layout->sympool(); | |
2604 | const Stringpool* dynpool = layout->dynpool(); | |
2605 | Output_symtab_xindex* symtab_xindex = layout->symtab_xindex(); | |
2606 | Output_symtab_xindex* dynsym_xindex = layout->dynsym_xindex(); | |
2607 | for (unsigned int i = 0; i < this->local_symbol_count_; ++i) | |
2608 | { | |
2609 | Local_symbol& lsym(this->local_symbols_[i]); | |
2610 | ||
2611 | bool is_ordinary; | |
2612 | unsigned int st_shndx = this->adjust_sym_shndx(i, lsym.st_shndx, | |
2613 | &is_ordinary); | |
2614 | if (is_ordinary) | |
2615 | { | |
2616 | Output_section* os = this->ibase_->output_section(st_shndx); | |
2617 | st_shndx = os->out_shndx(); | |
2618 | if (st_shndx >= elfcpp::SHN_LORESERVE) | |
2619 | { | |
2620 | symtab_xindex->add(this->local_symbol_index_ + i, st_shndx); | |
2621 | if (lsym.needs_dynsym_entry) | |
2622 | dynsym_xindex->add(lsym.output_dynsym_index, st_shndx); | |
2623 | st_shndx = elfcpp::SHN_XINDEX; | |
2624 | } | |
2625 | } | |
2626 | ||
2627 | // Write the symbol to the output symbol table. | |
2628 | { | |
2629 | elfcpp::Sym_write<size, big_endian> osym(ov); | |
2630 | osym.put_st_name(sympool->get_offset(lsym.name)); | |
2631 | osym.put_st_value(lsym.st_value); | |
2632 | osym.put_st_size(lsym.st_size); | |
2633 | osym.put_st_info(elfcpp::STB_LOCAL, | |
2634 | static_cast<elfcpp::STT>(lsym.st_type)); | |
2635 | osym.put_st_other(0); | |
2636 | osym.put_st_shndx(st_shndx); | |
2637 | ov += sym_size; | |
2638 | } | |
2639 | ||
2640 | // Write the symbol to the output dynamic symbol table. | |
2641 | if (lsym.needs_dynsym_entry) | |
2e702c99 RM |
2642 | { |
2643 | gold_assert(dyn_ov < dyn_oview + dyn_output_size); | |
2644 | elfcpp::Sym_write<size, big_endian> osym(dyn_ov); | |
2645 | osym.put_st_name(dynpool->get_offset(lsym.name)); | |
2646 | osym.put_st_value(lsym.st_value); | |
2647 | osym.put_st_size(lsym.st_size); | |
f0f9babf CC |
2648 | osym.put_st_info(elfcpp::STB_LOCAL, |
2649 | static_cast<elfcpp::STT>(lsym.st_type)); | |
2e702c99 RM |
2650 | osym.put_st_other(0); |
2651 | osym.put_st_shndx(st_shndx); | |
2652 | dyn_ov += sym_size; | |
2653 | } | |
f0f9babf CC |
2654 | } |
2655 | ||
2656 | if (output_size > 0) | |
2657 | { | |
2658 | gold_assert(ov - oview == output_size); | |
2659 | of->write_output_view(symtab_off + this->local_symbol_offset_, | |
2660 | output_size, oview); | |
2661 | } | |
2662 | ||
2663 | if (dyn_output_size > 0) | |
2664 | { | |
2665 | gold_assert(dyn_ov - dyn_oview == dyn_output_size); | |
2666 | of->write_output_view(this->local_dynsym_offset_, dyn_output_size, | |
2e702c99 | 2667 | dyn_oview); |
f0f9babf | 2668 | } |
cdc29364 CC |
2669 | } |
2670 | ||
2671 | // Set the offset of a section. | |
2672 | ||
2673 | template<int size, bool big_endian> | |
2674 | void | |
6fa2a40b | 2675 | Sized_relobj_incr<size, big_endian>::do_set_section_offset(unsigned int, |
cdc29364 CC |
2676 | uint64_t) |
2677 | { | |
2678 | } | |
2679 | ||
2680 | // Class Sized_incr_dynobj. Most of these methods are not used for | |
2681 | // Incremental objects, but are required to be implemented by the | |
2682 | // base class Object. | |
2683 | ||
2684 | template<int size, bool big_endian> | |
2685 | Sized_incr_dynobj<size, big_endian>::Sized_incr_dynobj( | |
2686 | const std::string& name, | |
2687 | Sized_incremental_binary<size, big_endian>* ibase, | |
2688 | unsigned int input_file_index) | |
2689 | : Dynobj(name, NULL), ibase_(ibase), | |
2690 | input_file_index_(input_file_index), | |
2691 | input_reader_(ibase->inputs_reader().input_file(input_file_index)), | |
53bbcc1b | 2692 | symbols_(), defined_count_(0) |
cdc29364 CC |
2693 | { |
2694 | if (this->input_reader_.is_in_system_directory()) | |
2695 | this->set_is_in_system_directory(); | |
0f1c85a6 CC |
2696 | if (this->input_reader_.as_needed()) |
2697 | this->set_as_needed(); | |
2698 | this->set_soname_string(this->input_reader_.get_soname()); | |
cdc29364 CC |
2699 | this->set_shnum(0); |
2700 | } | |
2701 | ||
2702 | // Read the symbols. | |
2703 | ||
2704 | template<int size, bool big_endian> | |
2705 | void | |
2706 | Sized_incr_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data*) | |
2707 | { | |
2708 | gold_unreachable(); | |
2709 | } | |
2710 | ||
2711 | // Lay out the input sections. | |
2712 | ||
2713 | template<int size, bool big_endian> | |
2714 | void | |
2715 | Sized_incr_dynobj<size, big_endian>::do_layout( | |
2716 | Symbol_table*, | |
2717 | Layout*, | |
2718 | Read_symbols_data*) | |
2719 | { | |
2720 | } | |
2721 | ||
2722 | // Add the symbols to the symbol table. | |
2723 | ||
2724 | template<int size, bool big_endian> | |
2725 | void | |
2726 | Sized_incr_dynobj<size, big_endian>::do_add_symbols( | |
2727 | Symbol_table* symtab, | |
2728 | Read_symbols_data*, | |
2729 | Layout*) | |
2730 | { | |
2731 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2732 | unsigned char symbuf[sym_size]; | |
2733 | elfcpp::Sym<size, big_endian> sym(symbuf); | |
2734 | elfcpp::Sym_write<size, big_endian> osym(symbuf); | |
2735 | ||
cdc29364 CC |
2736 | unsigned int nsyms = this->input_reader_.get_global_symbol_count(); |
2737 | this->symbols_.resize(nsyms); | |
2738 | ||
2739 | Incremental_binary::View symtab_view(NULL); | |
2740 | unsigned int symtab_count; | |
2741 | elfcpp::Elf_strtab strtab(NULL, 0); | |
2742 | this->ibase_->get_symtab_view(&symtab_view, &symtab_count, &strtab); | |
2743 | ||
94a3fc8b CC |
2744 | Incremental_symtab_reader<big_endian> isymtab(this->ibase_->symtab_reader()); |
2745 | unsigned int isym_count = isymtab.symbol_count(); | |
2746 | unsigned int first_global = symtab_count - isym_count; | |
cdc29364 | 2747 | |
26d3c67d CC |
2748 | // We keep a set of symbols that we have generated COPY relocations |
2749 | // for, indexed by the symbol value. We do not need more than one | |
2750 | // COPY relocation per address. | |
2751 | typedef typename std::set<Address> Copied_symbols; | |
2752 | Copied_symbols copied_symbols; | |
2753 | ||
f0f9babf | 2754 | const unsigned char* sym_p; |
cdc29364 CC |
2755 | for (unsigned int i = 0; i < nsyms; ++i) |
2756 | { | |
2757 | bool is_def; | |
26d3c67d | 2758 | bool is_copy; |
cdc29364 | 2759 | unsigned int output_symndx = |
26d3c67d | 2760 | this->input_reader_.get_output_symbol_index(i, &is_def, &is_copy); |
cdc29364 CC |
2761 | sym_p = symtab_view.data() + output_symndx * sym_size; |
2762 | elfcpp::Sym<size, big_endian> gsym(sym_p); | |
2763 | const char* name; | |
2764 | if (!strtab.get_c_string(gsym.get_st_name(), &name)) | |
2765 | name = ""; | |
2766 | ||
26d3c67d | 2767 | Address v; |
cdc29364 CC |
2768 | unsigned int shndx; |
2769 | elfcpp::STB st_bind = gsym.get_st_bind(); | |
2770 | elfcpp::STT st_type = gsym.get_st_type(); | |
2771 | ||
2772 | // Local hidden symbols start out as globals, but get converted to | |
2773 | // to local during output. | |
2774 | if (st_bind == elfcpp::STB_LOCAL) | |
2e702c99 | 2775 | st_bind = elfcpp::STB_GLOBAL; |
cdc29364 CC |
2776 | |
2777 | if (!is_def) | |
2778 | { | |
2779 | shndx = elfcpp::SHN_UNDEF; | |
2780 | v = 0; | |
2781 | } | |
2782 | else | |
2783 | { | |
2784 | // For a symbol defined in a shared object, the section index | |
2785 | // is meaningless, as long as it's not SHN_UNDEF. | |
2786 | shndx = 1; | |
2787 | v = gsym.get_st_value(); | |
53bbcc1b | 2788 | ++this->defined_count_; |
cdc29364 CC |
2789 | } |
2790 | ||
2791 | osym.put_st_name(0); | |
2792 | osym.put_st_value(v); | |
2793 | osym.put_st_size(gsym.get_st_size()); | |
2794 | osym.put_st_info(st_bind, st_type); | |
2795 | osym.put_st_other(gsym.get_st_other()); | |
2796 | osym.put_st_shndx(shndx); | |
2797 | ||
26d3c67d CC |
2798 | Sized_symbol<size>* res = |
2799 | symtab->add_from_incrobj<size, big_endian>(this, name, NULL, &sym); | |
2800 | this->symbols_[i] = res; | |
94a3fc8b CC |
2801 | this->ibase_->add_global_symbol(output_symndx - first_global, |
2802 | this->symbols_[i]); | |
26d3c67d CC |
2803 | |
2804 | if (is_copy) | |
2805 | { | |
2806 | std::pair<typename Copied_symbols::iterator, bool> ins = | |
2807 | copied_symbols.insert(v); | |
2808 | if (ins.second) | |
2809 | { | |
2810 | unsigned int shndx = gsym.get_st_shndx(); | |
2811 | Output_section* os = this->ibase_->output_section(shndx); | |
2812 | off_t offset = v - os->address(); | |
2813 | this->ibase_->add_copy_reloc(this->symbols_[i], os, offset); | |
2814 | } | |
2815 | } | |
cdc29364 CC |
2816 | } |
2817 | } | |
2818 | ||
2819 | // Return TRUE if we should include this object from an archive library. | |
2820 | ||
2821 | template<int size, bool big_endian> | |
2822 | Archive::Should_include | |
2823 | Sized_incr_dynobj<size, big_endian>::do_should_include_member( | |
2824 | Symbol_table*, | |
2825 | Layout*, | |
2826 | Read_symbols_data*, | |
2827 | std::string*) | |
2828 | { | |
2829 | gold_unreachable(); | |
2830 | } | |
2831 | ||
2832 | // Iterate over global symbols, calling a visitor class V for each. | |
2833 | ||
2834 | template<int size, bool big_endian> | |
2835 | void | |
2836 | Sized_incr_dynobj<size, big_endian>::do_for_all_global_symbols( | |
2837 | Read_symbols_data*, | |
2838 | Library_base::Symbol_visitor_base*) | |
2839 | { | |
2840 | // This routine is not used for dynamic libraries. | |
2841 | } | |
2842 | ||
2843 | // Iterate over local symbols, calling a visitor class V for each GOT offset | |
2844 | // associated with a local symbol. | |
2845 | ||
2846 | template<int size, bool big_endian> | |
2847 | void | |
2848 | Sized_incr_dynobj<size, big_endian>::do_for_all_local_got_entries( | |
2849 | Got_offset_list::Visitor*) const | |
2850 | { | |
cdc29364 CC |
2851 | } |
2852 | ||
2853 | // Get the size of a section. | |
2854 | ||
2855 | template<int size, bool big_endian> | |
2856 | uint64_t | |
2857 | Sized_incr_dynobj<size, big_endian>::do_section_size(unsigned int) | |
2858 | { | |
2859 | gold_unreachable(); | |
2860 | } | |
2861 | ||
2862 | // Get the name of a section. | |
2863 | ||
2864 | template<int size, bool big_endian> | |
2865 | std::string | |
54674d38 | 2866 | Sized_incr_dynobj<size, big_endian>::do_section_name(unsigned int) const |
cdc29364 CC |
2867 | { |
2868 | gold_unreachable(); | |
2869 | } | |
2870 | ||
2871 | // Return a view of the contents of a section. | |
2872 | ||
2873 | template<int size, bool big_endian> | |
c1027032 CC |
2874 | const unsigned char* |
2875 | Sized_incr_dynobj<size, big_endian>::do_section_contents( | |
2876 | unsigned int, | |
2877 | section_size_type*, | |
2878 | bool) | |
cdc29364 CC |
2879 | { |
2880 | gold_unreachable(); | |
2881 | } | |
2882 | ||
2883 | // Return section flags. | |
2884 | ||
2885 | template<int size, bool big_endian> | |
2886 | uint64_t | |
2887 | Sized_incr_dynobj<size, big_endian>::do_section_flags(unsigned int) | |
2888 | { | |
2889 | gold_unreachable(); | |
2890 | } | |
2891 | ||
2892 | // Return section entsize. | |
2893 | ||
2894 | template<int size, bool big_endian> | |
2895 | uint64_t | |
2896 | Sized_incr_dynobj<size, big_endian>::do_section_entsize(unsigned int) | |
2897 | { | |
2898 | gold_unreachable(); | |
2899 | } | |
2900 | ||
2901 | // Return section address. | |
2902 | ||
2903 | template<int size, bool big_endian> | |
2904 | uint64_t | |
2905 | Sized_incr_dynobj<size, big_endian>::do_section_address(unsigned int) | |
2906 | { | |
2907 | gold_unreachable(); | |
2908 | } | |
2909 | ||
2910 | // Return section type. | |
2911 | ||
2912 | template<int size, bool big_endian> | |
2913 | unsigned int | |
2914 | Sized_incr_dynobj<size, big_endian>::do_section_type(unsigned int) | |
2915 | { | |
2916 | gold_unreachable(); | |
2917 | } | |
2918 | ||
2919 | // Return the section link field. | |
2920 | ||
2921 | template<int size, bool big_endian> | |
2922 | unsigned int | |
2923 | Sized_incr_dynobj<size, big_endian>::do_section_link(unsigned int) | |
2924 | { | |
2925 | gold_unreachable(); | |
2926 | } | |
2927 | ||
2928 | // Return the section link field. | |
2929 | ||
2930 | template<int size, bool big_endian> | |
2931 | unsigned int | |
2932 | Sized_incr_dynobj<size, big_endian>::do_section_info(unsigned int) | |
2933 | { | |
2934 | gold_unreachable(); | |
2935 | } | |
2936 | ||
2937 | // Return the section alignment. | |
2938 | ||
2939 | template<int size, bool big_endian> | |
2940 | uint64_t | |
2941 | Sized_incr_dynobj<size, big_endian>::do_section_addralign(unsigned int) | |
2942 | { | |
2943 | gold_unreachable(); | |
2944 | } | |
2945 | ||
2946 | // Return the Xindex structure to use. | |
2947 | ||
2948 | template<int size, bool big_endian> | |
2949 | Xindex* | |
2950 | Sized_incr_dynobj<size, big_endian>::do_initialize_xindex() | |
2951 | { | |
2952 | gold_unreachable(); | |
2953 | } | |
2954 | ||
2955 | // Get symbol counts. | |
2956 | ||
2957 | template<int size, bool big_endian> | |
2958 | void | |
2959 | Sized_incr_dynobj<size, big_endian>::do_get_global_symbol_counts( | |
53bbcc1b CC |
2960 | const Symbol_table*, |
2961 | size_t* defined, | |
2962 | size_t* used) const | |
2963 | { | |
2964 | *defined = this->defined_count_; | |
2965 | size_t count = 0; | |
2966 | for (typename Symbols::const_iterator p = this->symbols_.begin(); | |
2967 | p != this->symbols_.end(); | |
2968 | ++p) | |
2969 | if (*p != NULL | |
2970 | && (*p)->source() == Symbol::FROM_OBJECT | |
2971 | && (*p)->object() == this | |
2972 | && (*p)->is_defined() | |
2973 | && (*p)->dynsym_index() != -1U) | |
2974 | ++count; | |
2975 | *used = count; | |
cdc29364 CC |
2976 | } |
2977 | ||
2978 | // Allocate an incremental object of the appropriate size and endianness. | |
2979 | ||
2980 | Object* | |
2981 | make_sized_incremental_object( | |
2982 | Incremental_binary* ibase, | |
2983 | unsigned int input_file_index, | |
2984 | Incremental_input_type input_type, | |
2985 | const Incremental_binary::Input_reader* input_reader) | |
2986 | { | |
2987 | Object* obj = NULL; | |
2988 | std::string name(input_reader->filename()); | |
2989 | ||
2990 | switch (parameters->size_and_endianness()) | |
2991 | { | |
2992 | #ifdef HAVE_TARGET_32_LITTLE | |
2993 | case Parameters::TARGET_32_LITTLE: | |
2994 | { | |
2995 | Sized_incremental_binary<32, false>* sized_ibase = | |
2996 | static_cast<Sized_incremental_binary<32, false>*>(ibase); | |
2997 | if (input_type == INCREMENTAL_INPUT_SHARED_LIBRARY) | |
2998 | obj = new Sized_incr_dynobj<32, false>(name, sized_ibase, | |
2999 | input_file_index); | |
3000 | else | |
6fa2a40b | 3001 | obj = new Sized_relobj_incr<32, false>(name, sized_ibase, |
cdc29364 CC |
3002 | input_file_index); |
3003 | } | |
3004 | break; | |
3005 | #endif | |
3006 | #ifdef HAVE_TARGET_32_BIG | |
3007 | case Parameters::TARGET_32_BIG: | |
3008 | { | |
3009 | Sized_incremental_binary<32, true>* sized_ibase = | |
3010 | static_cast<Sized_incremental_binary<32, true>*>(ibase); | |
3011 | if (input_type == INCREMENTAL_INPUT_SHARED_LIBRARY) | |
3012 | obj = new Sized_incr_dynobj<32, true>(name, sized_ibase, | |
3013 | input_file_index); | |
3014 | else | |
6fa2a40b | 3015 | obj = new Sized_relobj_incr<32, true>(name, sized_ibase, |
cdc29364 CC |
3016 | input_file_index); |
3017 | } | |
3018 | break; | |
3019 | #endif | |
3020 | #ifdef HAVE_TARGET_64_LITTLE | |
3021 | case Parameters::TARGET_64_LITTLE: | |
3022 | { | |
3023 | Sized_incremental_binary<64, false>* sized_ibase = | |
3024 | static_cast<Sized_incremental_binary<64, false>*>(ibase); | |
3025 | if (input_type == INCREMENTAL_INPUT_SHARED_LIBRARY) | |
3026 | obj = new Sized_incr_dynobj<64, false>(name, sized_ibase, | |
3027 | input_file_index); | |
3028 | else | |
6fa2a40b | 3029 | obj = new Sized_relobj_incr<64, false>(name, sized_ibase, |
cdc29364 CC |
3030 | input_file_index); |
3031 | } | |
3032 | break; | |
3033 | #endif | |
3034 | #ifdef HAVE_TARGET_64_BIG | |
3035 | case Parameters::TARGET_64_BIG: | |
3036 | { | |
3037 | Sized_incremental_binary<64, true>* sized_ibase = | |
3038 | static_cast<Sized_incremental_binary<64, true>*>(ibase); | |
3039 | if (input_type == INCREMENTAL_INPUT_SHARED_LIBRARY) | |
3040 | obj = new Sized_incr_dynobj<64, true>(name, sized_ibase, | |
3041 | input_file_index); | |
3042 | else | |
6fa2a40b | 3043 | obj = new Sized_relobj_incr<64, true>(name, sized_ibase, |
cdc29364 CC |
3044 | input_file_index); |
3045 | } | |
3046 | break; | |
3047 | #endif | |
3048 | default: | |
3049 | gold_unreachable(); | |
3050 | } | |
3051 | ||
3052 | gold_assert(obj != NULL); | |
3053 | return obj; | |
3054 | } | |
3055 | ||
3056 | // Copy the unused symbols from the incremental input info. | |
3057 | // We need to do this because we may be overwriting the incremental | |
3058 | // input info in the base file before we write the new incremental | |
3059 | // info. | |
3060 | void | |
3061 | Incremental_library::copy_unused_symbols() | |
3062 | { | |
3063 | unsigned int symcount = this->input_reader_->get_unused_symbol_count(); | |
3064 | this->unused_symbols_.reserve(symcount); | |
3065 | for (unsigned int i = 0; i < symcount; ++i) | |
3066 | { | |
3067 | std::string name(this->input_reader_->get_unused_symbol(i)); | |
3068 | this->unused_symbols_.push_back(name); | |
3069 | } | |
3070 | } | |
3071 | ||
3072 | // Iterator for unused global symbols in the library. | |
3073 | void | |
3074 | Incremental_library::do_for_all_unused_symbols(Symbol_visitor_base* v) const | |
3075 | { | |
3076 | for (Symbol_list::const_iterator p = this->unused_symbols_.begin(); | |
3077 | p != this->unused_symbols_.end(); | |
3078 | ++p) | |
3079 | v->visit(p->c_str()); | |
3080 | } | |
3081 | ||
c549a694 ILT |
3082 | // Instantiate the templates we need. |
3083 | ||
3084 | #ifdef HAVE_TARGET_32_LITTLE | |
3085 | template | |
3086 | class Sized_incremental_binary<32, false>; | |
cdc29364 CC |
3087 | |
3088 | template | |
6fa2a40b | 3089 | class Sized_relobj_incr<32, false>; |
cdc29364 CC |
3090 | |
3091 | template | |
3092 | class Sized_incr_dynobj<32, false>; | |
c549a694 ILT |
3093 | #endif |
3094 | ||
3095 | #ifdef HAVE_TARGET_32_BIG | |
3096 | template | |
3097 | class Sized_incremental_binary<32, true>; | |
cdc29364 CC |
3098 | |
3099 | template | |
6fa2a40b | 3100 | class Sized_relobj_incr<32, true>; |
cdc29364 CC |
3101 | |
3102 | template | |
3103 | class Sized_incr_dynobj<32, true>; | |
c549a694 ILT |
3104 | #endif |
3105 | ||
3106 | #ifdef HAVE_TARGET_64_LITTLE | |
3107 | template | |
3108 | class Sized_incremental_binary<64, false>; | |
cdc29364 CC |
3109 | |
3110 | template | |
6fa2a40b | 3111 | class Sized_relobj_incr<64, false>; |
cdc29364 CC |
3112 | |
3113 | template | |
3114 | class Sized_incr_dynobj<64, false>; | |
c549a694 ILT |
3115 | #endif |
3116 | ||
3117 | #ifdef HAVE_TARGET_64_BIG | |
3118 | template | |
3119 | class Sized_incremental_binary<64, true>; | |
cdc29364 CC |
3120 | |
3121 | template | |
6fa2a40b | 3122 | class Sized_relobj_incr<64, true>; |
cdc29364 CC |
3123 | |
3124 | template | |
3125 | class Sized_incr_dynobj<64, true>; | |
c549a694 ILT |
3126 | #endif |
3127 | ||
0e879927 | 3128 | } // End namespace gold. |