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14bfc3f5 | 1 | // target.h -- target support for gold -*- C++ -*- |
bae7f79e | 2 | |
6d03d481 | 3 | // Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@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 | ||
bae7f79e ILT |
23 | // The abstract class Target is the interface for target specific |
24 | // support. It defines abstract methods which each target must | |
25 | // implement. Typically there will be one target per processor, but | |
26 | // in some cases it may be necessary to have subclasses. | |
27 | ||
28 | // For speed and consistency we want to use inline functions to handle | |
29 | // relocation processing. So besides implementations of the abstract | |
30 | // methods, each target is expected to define a template | |
31 | // specialization of the relocation functions. | |
32 | ||
33 | #ifndef GOLD_TARGET_H | |
34 | #define GOLD_TARGET_H | |
35 | ||
14bfc3f5 | 36 | #include "elfcpp.h" |
8851ecca | 37 | #include "options.h" |
cd72c291 | 38 | #include "parameters.h" |
20e6d0d6 | 39 | #include "debug.h" |
14bfc3f5 | 40 | |
bae7f79e ILT |
41 | namespace gold |
42 | { | |
43 | ||
92e059d8 | 44 | class General_options; |
14bfc3f5 | 45 | class Object; |
364c7fa5 | 46 | class Relobj; |
61ba1cf9 | 47 | template<int size, bool big_endian> |
f6ce93d6 | 48 | class Sized_relobj; |
6a74a719 | 49 | class Relocatable_relocs; |
92e059d8 | 50 | template<int size, bool big_endian> |
730cdc88 | 51 | class Relocate_info; |
364c7fa5 | 52 | class Reloc_symbol_changes; |
f6ce93d6 ILT |
53 | class Symbol; |
54 | template<int size> | |
55 | class Sized_symbol; | |
56 | class Symbol_table; | |
730cdc88 | 57 | class Output_section; |
14bfc3f5 ILT |
58 | |
59 | // The abstract class for target specific handling. | |
60 | ||
bae7f79e ILT |
61 | class Target |
62 | { | |
63 | public: | |
14bfc3f5 ILT |
64 | virtual ~Target() |
65 | { } | |
66 | ||
67 | // Return the bit size that this target implements. This should | |
68 | // return 32 or 64. | |
69 | int | |
70 | get_size() const | |
75f65a3e | 71 | { return this->pti_->size; } |
14bfc3f5 ILT |
72 | |
73 | // Return whether this target is big-endian. | |
74 | bool | |
75 | is_big_endian() const | |
75f65a3e | 76 | { return this->pti_->is_big_endian; } |
14bfc3f5 | 77 | |
61ba1cf9 ILT |
78 | // Machine code to store in e_machine field of ELF header. |
79 | elfcpp::EM | |
80 | machine_code() const | |
81 | { return this->pti_->machine_code; } | |
82 | ||
14bfc3f5 ILT |
83 | // Whether this target has a specific make_symbol function. |
84 | bool | |
85 | has_make_symbol() const | |
75f65a3e | 86 | { return this->pti_->has_make_symbol; } |
14bfc3f5 ILT |
87 | |
88 | // Whether this target has a specific resolve function. | |
89 | bool | |
90 | has_resolve() const | |
75f65a3e ILT |
91 | { return this->pti_->has_resolve; } |
92 | ||
c51e6221 ILT |
93 | // Whether this target has a specific code fill function. |
94 | bool | |
95 | has_code_fill() const | |
96 | { return this->pti_->has_code_fill; } | |
97 | ||
dbe717ef ILT |
98 | // Return the default name of the dynamic linker. |
99 | const char* | |
100 | dynamic_linker() const | |
101 | { return this->pti_->dynamic_linker; } | |
102 | ||
75f65a3e ILT |
103 | // Return the default address to use for the text segment. |
104 | uint64_t | |
0c5e9c22 ILT |
105 | default_text_segment_address() const |
106 | { return this->pti_->default_text_segment_address; } | |
75f65a3e ILT |
107 | |
108 | // Return the ABI specified page size. | |
109 | uint64_t | |
110 | abi_pagesize() const | |
cd72c291 | 111 | { |
8851ecca ILT |
112 | if (parameters->options().max_page_size() > 0) |
113 | return parameters->options().max_page_size(); | |
cd72c291 ILT |
114 | else |
115 | return this->pti_->abi_pagesize; | |
116 | } | |
75f65a3e ILT |
117 | |
118 | // Return the common page size used on actual systems. | |
119 | uint64_t | |
120 | common_pagesize() const | |
cd72c291 | 121 | { |
8851ecca ILT |
122 | if (parameters->options().common_page_size() > 0) |
123 | return std::min(parameters->options().common_page_size(), | |
cd72c291 ILT |
124 | this->abi_pagesize()); |
125 | else | |
126 | return std::min(this->pti_->common_pagesize, | |
127 | this->abi_pagesize()); | |
128 | } | |
14bfc3f5 | 129 | |
35cdfc9a ILT |
130 | // If we see some object files with .note.GNU-stack sections, and |
131 | // some objects files without them, this returns whether we should | |
132 | // consider the object files without them to imply that the stack | |
133 | // should be executable. | |
134 | bool | |
135 | is_default_stack_executable() const | |
136 | { return this->pti_->is_default_stack_executable; } | |
137 | ||
0864d551 ILT |
138 | // Return a character which may appear as a prefix for a wrap |
139 | // symbol. If this character appears, we strip it when checking for | |
140 | // wrapping and add it back when forming the final symbol name. | |
141 | // This should be '\0' if not special prefix is required, which is | |
142 | // the normal case. | |
143 | char | |
144 | wrap_char() const | |
145 | { return this->pti_->wrap_char; } | |
146 | ||
8a5e3e08 ILT |
147 | // Return the special section index which indicates a small common |
148 | // symbol. This will return SHN_UNDEF if there are no small common | |
149 | // symbols. | |
150 | elfcpp::Elf_Half | |
151 | small_common_shndx() const | |
152 | { return this->pti_->small_common_shndx; } | |
153 | ||
154 | // Return values to add to the section flags for the section holding | |
155 | // small common symbols. | |
156 | elfcpp::Elf_Xword | |
157 | small_common_section_flags() const | |
158 | { | |
159 | gold_assert(this->pti_->small_common_shndx != elfcpp::SHN_UNDEF); | |
160 | return this->pti_->small_common_section_flags; | |
161 | } | |
162 | ||
163 | // Return the special section index which indicates a large common | |
164 | // symbol. This will return SHN_UNDEF if there are no large common | |
165 | // symbols. | |
166 | elfcpp::Elf_Half | |
167 | large_common_shndx() const | |
168 | { return this->pti_->large_common_shndx; } | |
169 | ||
170 | // Return values to add to the section flags for the section holding | |
171 | // large common symbols. | |
172 | elfcpp::Elf_Xword | |
173 | large_common_section_flags() const | |
174 | { | |
175 | gold_assert(this->pti_->large_common_shndx != elfcpp::SHN_UNDEF); | |
176 | return this->pti_->large_common_section_flags; | |
177 | } | |
178 | ||
179 | // This hook is called when an output section is created. | |
180 | void | |
181 | new_output_section(Output_section* os) const | |
182 | { this->do_new_output_section(os); } | |
183 | ||
5a6f7e2d ILT |
184 | // This is called to tell the target to complete any sections it is |
185 | // handling. After this all sections must have their final size. | |
186 | void | |
7e1edb90 ILT |
187 | finalize_sections(Layout* layout) |
188 | { return this->do_finalize_sections(layout); } | |
5a6f7e2d | 189 | |
ab5c9e90 ILT |
190 | // Return the value to use for a global symbol which needs a special |
191 | // value in the dynamic symbol table. This will only be called if | |
192 | // the backend first calls symbol->set_needs_dynsym_value(). | |
193 | uint64_t | |
194 | dynsym_value(const Symbol* sym) const | |
195 | { return this->do_dynsym_value(sym); } | |
196 | ||
c51e6221 ILT |
197 | // Return a string to use to fill out a code section. This is |
198 | // basically one or more NOPS which must fill out the specified | |
199 | // length in bytes. | |
200 | std::string | |
8851ecca | 201 | code_fill(section_size_type length) const |
c51e6221 ILT |
202 | { return this->do_code_fill(length); } |
203 | ||
9a2d6984 ILT |
204 | // Return whether SYM is known to be defined by the ABI. This is |
205 | // used to avoid inappropriate warnings about undefined symbols. | |
206 | bool | |
9c2d0ef9 | 207 | is_defined_by_abi(const Symbol* sym) const |
9a2d6984 ILT |
208 | { return this->do_is_defined_by_abi(sym); } |
209 | ||
36959681 ILT |
210 | // Adjust the output file header before it is written out. VIEW |
211 | // points to the header in external form. LEN is the length. | |
212 | void | |
213 | adjust_elf_header(unsigned char* view, int len) const | |
214 | { return this->do_adjust_elf_header(view, len); } | |
215 | ||
bb04269c DK |
216 | // Return whether NAME is a local label name. This is used to implement the |
217 | // --discard-locals options. | |
218 | bool | |
219 | is_local_label_name(const char* name) const | |
220 | { return this->do_is_local_label_name(name); } | |
221 | ||
364c7fa5 ILT |
222 | // A function starts at OFFSET in section SHNDX in OBJECT. That |
223 | // function was compiled with -fsplit-stack, but it refers to a | |
224 | // function which was compiled without -fsplit-stack. VIEW is a | |
225 | // modifiable view of the section; VIEW_SIZE is the size of the | |
226 | // view. The target has to adjust the function so that it allocates | |
227 | // enough stack. | |
228 | void | |
229 | calls_non_split(Relobj* object, unsigned int shndx, | |
230 | section_offset_type fnoffset, section_size_type fnsize, | |
231 | unsigned char* view, section_size_type view_size, | |
232 | std::string* from, std::string* to) const | |
233 | { | |
234 | this->do_calls_non_split(object, shndx, fnoffset, fnsize, view, view_size, | |
235 | from, to); | |
236 | } | |
237 | ||
f733487b DK |
238 | // Make an ELF object. |
239 | template<int size, bool big_endian> | |
240 | Object* | |
241 | make_elf_object(const std::string& name, Input_file* input_file, | |
242 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
243 | { return this->do_make_elf_object(name, input_file, offset, ehdr); } | |
244 | ||
20e6d0d6 DK |
245 | // Return true if target wants to perform relaxation. |
246 | bool | |
247 | may_relax() const | |
248 | { | |
249 | // Run the dummy relaxation pass twice if relaxation debugging is enabled. | |
250 | if (is_debugging_enabled(DEBUG_RELAXATION)) | |
251 | return true; | |
252 | ||
253 | return this->do_may_relax(); | |
254 | } | |
255 | ||
256 | // Perform a relaxation pass. Return true if layout may be changed. | |
257 | bool | |
258 | relax(int pass) | |
259 | { | |
260 | // Run the dummy relaxation pass twice if relaxation debugging is enabled. | |
261 | if (is_debugging_enabled(DEBUG_RELAXATION)) | |
262 | return pass < 2; | |
263 | ||
264 | return this->do_relax(pass); | |
364c7fa5 | 265 | } |
20e6d0d6 | 266 | |
14bfc3f5 | 267 | protected: |
75f65a3e ILT |
268 | // This struct holds the constant information for a child class. We |
269 | // use a struct to avoid the overhead of virtual function calls for | |
270 | // simple information. | |
271 | struct Target_info | |
272 | { | |
273 | // Address size (32 or 64). | |
274 | int size; | |
275 | // Whether the target is big endian. | |
276 | bool is_big_endian; | |
61ba1cf9 ILT |
277 | // The code to store in the e_machine field of the ELF header. |
278 | elfcpp::EM machine_code; | |
75f65a3e ILT |
279 | // Whether this target has a specific make_symbol function. |
280 | bool has_make_symbol; | |
281 | // Whether this target has a specific resolve function. | |
282 | bool has_resolve; | |
c51e6221 ILT |
283 | // Whether this target has a specific code fill function. |
284 | bool has_code_fill; | |
35cdfc9a ILT |
285 | // Whether an object file with no .note.GNU-stack sections implies |
286 | // that the stack should be executable. | |
287 | bool is_default_stack_executable; | |
0864d551 ILT |
288 | // Prefix character to strip when checking for wrapping. |
289 | char wrap_char; | |
dbe717ef ILT |
290 | // The default dynamic linker name. |
291 | const char* dynamic_linker; | |
75f65a3e | 292 | // The default text segment address. |
0c5e9c22 | 293 | uint64_t default_text_segment_address; |
75f65a3e ILT |
294 | // The ABI specified page size. |
295 | uint64_t abi_pagesize; | |
296 | // The common page size used by actual implementations. | |
297 | uint64_t common_pagesize; | |
8a5e3e08 ILT |
298 | // The special section index for small common symbols; SHN_UNDEF |
299 | // if none. | |
300 | elfcpp::Elf_Half small_common_shndx; | |
301 | // The special section index for large common symbols; SHN_UNDEF | |
302 | // if none. | |
303 | elfcpp::Elf_Half large_common_shndx; | |
304 | // Section flags for small common section. | |
305 | elfcpp::Elf_Xword small_common_section_flags; | |
306 | // Section flags for large common section. | |
307 | elfcpp::Elf_Xword large_common_section_flags; | |
75f65a3e ILT |
308 | }; |
309 | ||
310 | Target(const Target_info* pti) | |
311 | : pti_(pti) | |
14bfc3f5 ILT |
312 | { } |
313 | ||
8a5e3e08 ILT |
314 | // Virtual function which may be implemented by the child class. |
315 | virtual void | |
316 | do_new_output_section(Output_section*) const | |
317 | { } | |
318 | ||
5a6f7e2d ILT |
319 | // Virtual function which may be implemented by the child class. |
320 | virtual void | |
7e1edb90 | 321 | do_finalize_sections(Layout*) |
5a6f7e2d ILT |
322 | { } |
323 | ||
ab5c9e90 ILT |
324 | // Virtual function which may be implemented by the child class. |
325 | virtual uint64_t | |
326 | do_dynsym_value(const Symbol*) const | |
327 | { gold_unreachable(); } | |
328 | ||
c51e6221 ILT |
329 | // Virtual function which must be implemented by the child class if |
330 | // needed. | |
331 | virtual std::string | |
8851ecca | 332 | do_code_fill(section_size_type) const |
c51e6221 ILT |
333 | { gold_unreachable(); } |
334 | ||
9a2d6984 ILT |
335 | // Virtual function which may be implemented by the child class. |
336 | virtual bool | |
9c2d0ef9 | 337 | do_is_defined_by_abi(const Symbol*) const |
9a2d6984 ILT |
338 | { return false; } |
339 | ||
36959681 ILT |
340 | // Adjust the output file header before it is written out. VIEW |
341 | // points to the header in external form. LEN is the length, and | |
342 | // will be one of the values of elfcpp::Elf_sizes<size>::ehdr_size. | |
343 | // By default, we do nothing. | |
344 | virtual void | |
345 | do_adjust_elf_header(unsigned char*, int) const | |
346 | { } | |
347 | ||
bb04269c DK |
348 | // Virtual function which may be overriden by the child class. |
349 | virtual bool | |
350 | do_is_local_label_name(const char*) const; | |
351 | ||
364c7fa5 ILT |
352 | // Virtual function which may be overridden by the child class. |
353 | virtual void | |
354 | do_calls_non_split(Relobj* object, unsigned int, section_offset_type, | |
355 | section_size_type, unsigned char*, section_size_type, | |
356 | std::string*, std::string*) const; | |
357 | ||
f733487b DK |
358 | // make_elf_object hooks. There are four versions of these for |
359 | // different address sizes and endianities. | |
364c7fa5 | 360 | |
f733487b DK |
361 | #ifdef HAVE_TARGET_32_LITTLE |
362 | // Virtual functions which may be overriden by the child class. | |
363 | virtual Object* | |
364 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
365 | const elfcpp::Ehdr<32, false>&); | |
366 | #endif | |
367 | ||
368 | #ifdef HAVE_TARGET_32_BIG | |
369 | // Virtual functions which may be overriden by the child class. | |
370 | virtual Object* | |
371 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
372 | const elfcpp::Ehdr<32, true>&); | |
373 | #endif | |
374 | ||
375 | #ifdef HAVE_TARGET_64_LITTLE | |
376 | // Virtual functions which may be overriden by the child class. | |
377 | virtual Object* | |
378 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
379 | const elfcpp::Ehdr<64, false>& ehdr); | |
380 | #endif | |
381 | ||
382 | #ifdef HAVE_TARGET_64_BIG | |
383 | // Virtual functions which may be overriden by the child class. | |
384 | virtual Object* | |
385 | do_make_elf_object(const std::string& name, Input_file* input_file, | |
386 | off_t offset, const elfcpp::Ehdr<64, true>& ehdr); | |
387 | #endif | |
388 | ||
20e6d0d6 DK |
389 | // Virtual function which may be overriden by the child class. |
390 | virtual bool | |
391 | do_may_relax() const | |
392 | { return parameters->options().relax(); } | |
393 | ||
394 | // Virtual function which may be overriden by the child class. | |
395 | virtual bool | |
396 | do_relax(int) | |
397 | { return false; } | |
398 | ||
364c7fa5 ILT |
399 | // A function for targets to call. Return whether BYTES/LEN matches |
400 | // VIEW/VIEW_SIZE at OFFSET. | |
401 | bool | |
402 | match_view(const unsigned char* view, section_size_type view_size, | |
403 | section_offset_type offset, const char* bytes, size_t len) const; | |
404 | ||
405 | // Set the contents of a VIEW/VIEW_SIZE to nops starting at OFFSET | |
406 | // for LEN bytes. | |
407 | void | |
408 | set_view_to_nop(unsigned char* view, section_size_type view_size, | |
409 | section_offset_type offset, size_t len) const; | |
410 | ||
14bfc3f5 | 411 | private: |
f733487b DK |
412 | // The implementations of the four do_make_elf_object virtual functions are |
413 | // almost identical except for their sizes and endianity. We use a template. | |
414 | // for their implementations. | |
415 | template<int size, bool big_endian> | |
416 | inline Object* | |
417 | do_make_elf_object_implementation(const std::string&, Input_file*, off_t, | |
418 | const elfcpp::Ehdr<size, big_endian>&); | |
419 | ||
14bfc3f5 ILT |
420 | Target(const Target&); |
421 | Target& operator=(const Target&); | |
422 | ||
75f65a3e ILT |
423 | // The target information. |
424 | const Target_info* pti_; | |
bae7f79e ILT |
425 | }; |
426 | ||
14bfc3f5 ILT |
427 | // The abstract class for a specific size and endianness of target. |
428 | // Each actual target implementation class should derive from an | |
429 | // instantiation of Sized_target. | |
430 | ||
431 | template<int size, bool big_endian> | |
432 | class Sized_target : public Target | |
433 | { | |
434 | public: | |
435 | // Make a new symbol table entry for the target. This should be | |
436 | // overridden by a target which needs additional information in the | |
437 | // symbol table. This will only be called if has_make_symbol() | |
438 | // returns true. | |
439 | virtual Sized_symbol<size>* | |
14b31740 | 440 | make_symbol() const |
a3ad94ed | 441 | { gold_unreachable(); } |
14bfc3f5 ILT |
442 | |
443 | // Resolve a symbol for the target. This should be overridden by a | |
444 | // target which needs to take special action. TO is the | |
445 | // pre-existing symbol. SYM is the new symbol, seen in OBJECT. | |
14b31740 ILT |
446 | // VERSION is the version of SYM. This will only be called if |
447 | // has_resolve() returns true. | |
14bfc3f5 | 448 | virtual void |
14b31740 ILT |
449 | resolve(Symbol*, const elfcpp::Sym<size, big_endian>&, Object*, |
450 | const char*) | |
a3ad94ed | 451 | { gold_unreachable(); } |
14bfc3f5 | 452 | |
6d03d481 ST |
453 | // Process the relocs for a section, and record information of the |
454 | // mapping from source to destination sections. This mapping is later | |
455 | // used to determine unreferenced garbage sections. This procedure is | |
456 | // only called during garbage collection. | |
457 | virtual void | |
458 | gc_process_relocs(const General_options& options, | |
459 | Symbol_table* symtab, | |
460 | Layout* layout, | |
461 | Sized_relobj<size, big_endian>* object, | |
462 | unsigned int data_shndx, | |
463 | unsigned int sh_type, | |
464 | const unsigned char* prelocs, | |
465 | size_t reloc_count, | |
466 | Output_section* output_section, | |
467 | bool needs_special_offset_handling, | |
468 | size_t local_symbol_count, | |
469 | const unsigned char* plocal_symbols) = 0; | |
470 | ||
92e059d8 ILT |
471 | // Scan the relocs for a section, and record any information |
472 | // required for the symbol. OPTIONS is the command line options. | |
473 | // SYMTAB is the symbol table. OBJECT is the object in which the | |
a3ad94ed ILT |
474 | // section appears. DATA_SHNDX is the section index that these |
475 | // relocs apply to. SH_TYPE is the type of the relocation section, | |
92e059d8 ILT |
476 | // SHT_REL or SHT_RELA. PRELOCS points to the relocation data. |
477 | // RELOC_COUNT is the number of relocs. LOCAL_SYMBOL_COUNT is the | |
730cdc88 ILT |
478 | // number of local symbols. OUTPUT_SECTION is the output section. |
479 | // NEEDS_SPECIAL_OFFSET_HANDLING is true if offsets to the output | |
480 | // sections are not mapped as usual. PLOCAL_SYMBOLS points to the | |
481 | // local symbol data from OBJECT. GLOBAL_SYMBOLS is the array of | |
482 | // pointers to the global symbol table from OBJECT. | |
61ba1cf9 | 483 | virtual void |
92e059d8 ILT |
484 | scan_relocs(const General_options& options, |
485 | Symbol_table* symtab, | |
ead1e424 | 486 | Layout* layout, |
f6ce93d6 | 487 | Sized_relobj<size, big_endian>* object, |
a3ad94ed | 488 | unsigned int data_shndx, |
92e059d8 ILT |
489 | unsigned int sh_type, |
490 | const unsigned char* prelocs, | |
491 | size_t reloc_count, | |
730cdc88 ILT |
492 | Output_section* output_section, |
493 | bool needs_special_offset_handling, | |
92e059d8 | 494 | size_t local_symbol_count, |
730cdc88 | 495 | const unsigned char* plocal_symbols) = 0; |
92e059d8 ILT |
496 | |
497 | // Relocate section data. SH_TYPE is the type of the relocation | |
498 | // section, SHT_REL or SHT_RELA. PRELOCS points to the relocation | |
730cdc88 ILT |
499 | // information. RELOC_COUNT is the number of relocs. |
500 | // OUTPUT_SECTION is the output section. | |
501 | // NEEDS_SPECIAL_OFFSET_HANDLING is true if offsets must be mapped | |
502 | // to correspond to the output section. VIEW is a view into the | |
503 | // output file holding the section contents, VIEW_ADDRESS is the | |
504 | // virtual address of the view, and VIEW_SIZE is the size of the | |
505 | // view. If NEEDS_SPECIAL_OFFSET_HANDLING is true, the VIEW_xx | |
506 | // parameters refer to the complete output section data, not just | |
507 | // the input section data. | |
92e059d8 ILT |
508 | virtual void |
509 | relocate_section(const Relocate_info<size, big_endian>*, | |
510 | unsigned int sh_type, | |
511 | const unsigned char* prelocs, | |
512 | size_t reloc_count, | |
730cdc88 ILT |
513 | Output_section* output_section, |
514 | bool needs_special_offset_handling, | |
92e059d8 ILT |
515 | unsigned char* view, |
516 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
364c7fa5 ILT |
517 | section_size_type view_size, |
518 | const Reloc_symbol_changes*) = 0; | |
61ba1cf9 | 519 | |
6a74a719 ILT |
520 | // Scan the relocs during a relocatable link. The parameters are |
521 | // like scan_relocs, with an additional Relocatable_relocs | |
522 | // parameter, used to record the disposition of the relocs. | |
523 | virtual void | |
524 | scan_relocatable_relocs(const General_options& options, | |
525 | Symbol_table* symtab, | |
526 | Layout* layout, | |
527 | Sized_relobj<size, big_endian>* object, | |
528 | unsigned int data_shndx, | |
529 | unsigned int sh_type, | |
530 | const unsigned char* prelocs, | |
531 | size_t reloc_count, | |
532 | Output_section* output_section, | |
533 | bool needs_special_offset_handling, | |
534 | size_t local_symbol_count, | |
535 | const unsigned char* plocal_symbols, | |
536 | Relocatable_relocs*) = 0; | |
537 | ||
538 | // Relocate a section during a relocatable link. The parameters are | |
539 | // like relocate_section, with additional parameters for the view of | |
540 | // the output reloc section. | |
541 | virtual void | |
542 | relocate_for_relocatable(const Relocate_info<size, big_endian>*, | |
543 | unsigned int sh_type, | |
544 | const unsigned char* prelocs, | |
545 | size_t reloc_count, | |
546 | Output_section* output_section, | |
547 | off_t offset_in_output_section, | |
548 | const Relocatable_relocs*, | |
549 | unsigned char* view, | |
550 | typename elfcpp::Elf_types<size>::Elf_Addr | |
551 | view_address, | |
552 | section_size_type view_size, | |
553 | unsigned char* reloc_view, | |
554 | section_size_type reloc_view_size) = 0; | |
555 | ||
14bfc3f5 | 556 | protected: |
75f65a3e ILT |
557 | Sized_target(const Target::Target_info* pti) |
558 | : Target(pti) | |
559 | { | |
a3ad94ed ILT |
560 | gold_assert(pti->size == size); |
561 | gold_assert(pti->is_big_endian ? big_endian : !big_endian); | |
75f65a3e | 562 | } |
14bfc3f5 | 563 | }; |
bae7f79e ILT |
564 | |
565 | } // End namespace gold. | |
566 | ||
567 | #endif // !defined(GOLD_TARGET_H) |