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aadf04f7 | 1 | /* POWER/PowerPC XCOFF linker support. |
e8c4696e | 2 | Copyright 1995, 1996, 1997 Free Software Foundation, Inc. |
aadf04f7 SS |
3 | Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "coff/internal.h" | |
26 | #include "libcoff.h" | |
27 | ||
867d923d | 28 | /* This file holds the XCOFF linker code. */ |
aadf04f7 SS |
29 | |
30 | #define STRING_SIZE_SIZE (4) | |
31 | ||
b2193cc5 ILT |
32 | /* In order to support linking different object file formats into an |
33 | XCOFF format, we need to be able to determine whether a particular | |
34 | bfd_target is an XCOFF vector. FIXME: We need to rethink this | |
35 | whole approach. */ | |
36 | #define XCOFF_XVECP(xv) \ | |
37 | (strcmp ((xv)->name, "aixcoff-rs6000") == 0 \ | |
38 | || strcmp ((xv)->name, "xcoff-powermac") == 0) | |
39 | ||
aadf04f7 SS |
40 | /* Get the XCOFF hash table entries for a BFD. */ |
41 | #define obj_xcoff_sym_hashes(bfd) \ | |
42 | ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd)) | |
43 | ||
28a0c103 ILT |
44 | /* XCOFF relocation types. These probably belong in a header file |
45 | somewhere. The relocations are described in the function | |
46 | _bfd_ppc_xcoff_relocate_section in this file. */ | |
47 | ||
48 | #define R_POS (0x00) | |
49 | #define R_NEG (0x01) | |
50 | #define R_REL (0x02) | |
51 | #define R_TOC (0x03) | |
52 | #define R_RTB (0x04) | |
53 | #define R_GL (0x05) | |
54 | #define R_TCL (0x06) | |
55 | #define R_BA (0x08) | |
56 | #define R_BR (0x0a) | |
57 | #define R_RL (0x0c) | |
58 | #define R_RLA (0x0d) | |
59 | #define R_REF (0x0f) | |
60 | #define R_TRL (0x12) | |
61 | #define R_TRLA (0x13) | |
62 | #define R_RRTBI (0x14) | |
63 | #define R_RRTBA (0x15) | |
64 | #define R_CAI (0x16) | |
65 | #define R_CREL (0x17) | |
66 | #define R_RBA (0x18) | |
67 | #define R_RBAC (0x19) | |
68 | #define R_RBR (0x1a) | |
69 | #define R_RBRC (0x1b) | |
70 | ||
71 | /* The first word of global linkage code. This must be modified by | |
72 | filling in the correct TOC offset. */ | |
73 | ||
74 | #define XCOFF_GLINK_FIRST (0x81820000) /* lwz r12,0(r2) */ | |
75 | ||
76 | /* The remaining words of global linkage code. */ | |
77 | ||
78 | static unsigned long xcoff_glink_code[] = | |
79 | { | |
80 | 0x90410014, /* stw r2,20(r1) */ | |
81 | 0x800c0000, /* lwz r0,0(r12) */ | |
82 | 0x804c0004, /* lwz r2,4(r12) */ | |
83 | 0x7c0903a6, /* mtctr r0 */ | |
84 | 0x4e800420, /* bctr */ | |
85 | 0x0, /* start of traceback table */ | |
86 | 0x000c8000, /* traceback table */ | |
87 | 0x0 /* traceback table */ | |
88 | }; | |
89 | ||
90 | #define XCOFF_GLINK_SIZE \ | |
91 | (((sizeof xcoff_glink_code / sizeof xcoff_glink_code[0]) * 4) + 4) | |
92 | ||
93 | /* We reuse the SEC_ROM flag as a mark flag for garbage collection. | |
94 | This flag will only be used on input sections. */ | |
95 | ||
96 | #define SEC_MARK (SEC_ROM) | |
97 | ||
98 | /* The ldhdr structure. This appears at the start of the .loader | |
99 | section. */ | |
100 | ||
101 | struct internal_ldhdr | |
102 | { | |
103 | /* The version number: currently always 1. */ | |
104 | unsigned long l_version; | |
105 | /* The number of symbol table entries. */ | |
106 | bfd_size_type l_nsyms; | |
107 | /* The number of relocation table entries. */ | |
108 | bfd_size_type l_nreloc; | |
109 | /* The length of the import file string table. */ | |
110 | bfd_size_type l_istlen; | |
111 | /* The number of import files. */ | |
112 | bfd_size_type l_nimpid; | |
113 | /* The offset from the start of the .loader section to the first | |
114 | entry in the import file table. */ | |
115 | bfd_size_type l_impoff; | |
116 | /* The length of the string table. */ | |
117 | bfd_size_type l_stlen; | |
118 | /* The offset from the start of the .loader section to the first | |
119 | entry in the string table. */ | |
120 | bfd_size_type l_stoff; | |
121 | }; | |
122 | ||
123 | struct external_ldhdr | |
124 | { | |
125 | bfd_byte l_version[4]; | |
126 | bfd_byte l_nsyms[4]; | |
127 | bfd_byte l_nreloc[4]; | |
128 | bfd_byte l_istlen[4]; | |
129 | bfd_byte l_nimpid[4]; | |
130 | bfd_byte l_impoff[4]; | |
131 | bfd_byte l_stlen[4]; | |
132 | bfd_byte l_stoff[4]; | |
133 | }; | |
134 | ||
135 | #define LDHDRSZ (8 * 4) | |
136 | ||
137 | /* The ldsym structure. This is used to represent a symbol in the | |
138 | .loader section. */ | |
139 | ||
140 | struct internal_ldsym | |
141 | { | |
142 | union | |
143 | { | |
144 | /* The symbol name if <= SYMNMLEN characters. */ | |
145 | char _l_name[SYMNMLEN]; | |
146 | struct | |
147 | { | |
148 | /* Zero if the symbol name is more than SYMNMLEN characters. */ | |
149 | long _l_zeroes; | |
150 | /* The offset in the string table if the symbol name is more | |
151 | than SYMNMLEN characters. */ | |
152 | long _l_offset; | |
153 | } _l_l; | |
154 | } _l; | |
155 | /* The symbol value. */ | |
156 | bfd_vma l_value; | |
157 | /* The symbol section number. */ | |
158 | short l_scnum; | |
159 | /* The symbol type and flags. */ | |
160 | char l_smtype; | |
161 | /* The symbol storage class. */ | |
162 | char l_smclas; | |
163 | /* The import file ID. */ | |
164 | bfd_size_type l_ifile; | |
165 | /* Offset to the parameter type check string. */ | |
166 | bfd_size_type l_parm; | |
167 | }; | |
168 | ||
169 | struct external_ldsym | |
170 | { | |
171 | union | |
172 | { | |
173 | bfd_byte _l_name[SYMNMLEN]; | |
174 | struct | |
175 | { | |
176 | bfd_byte _l_zeroes[4]; | |
177 | bfd_byte _l_offset[4]; | |
178 | } _l_l; | |
179 | } _l; | |
180 | bfd_byte l_value[4]; | |
181 | bfd_byte l_scnum[2]; | |
182 | bfd_byte l_smtype[1]; | |
183 | bfd_byte l_smclas[1]; | |
184 | bfd_byte l_ifile[4]; | |
185 | bfd_byte l_parm[4]; | |
186 | }; | |
187 | ||
188 | #define LDSYMSZ (8 + 3 * 4 + 2 + 2) | |
189 | ||
190 | /* These flags are for the l_smtype field (the lower three bits are an | |
191 | XTY_* value). */ | |
192 | ||
193 | /* Imported symbol. */ | |
194 | #define L_IMPORT (0x40) | |
195 | /* Entry point. */ | |
196 | #define L_ENTRY (0x20) | |
197 | /* Exported symbol. */ | |
198 | #define L_EXPORT (0x10) | |
199 | ||
200 | /* The ldrel structure. This is used to represent a reloc in the | |
201 | .loader section. */ | |
202 | ||
203 | struct internal_ldrel | |
204 | { | |
205 | /* The reloc address. */ | |
206 | bfd_vma l_vaddr; | |
207 | /* The symbol table index in the .loader section symbol table. */ | |
208 | bfd_size_type l_symndx; | |
209 | /* The relocation type and size. */ | |
210 | short l_rtype; | |
211 | /* The section number this relocation applies to. */ | |
212 | short l_rsecnm; | |
213 | }; | |
214 | ||
215 | struct external_ldrel | |
216 | { | |
217 | bfd_byte l_vaddr[4]; | |
218 | bfd_byte l_symndx[4]; | |
219 | bfd_byte l_rtype[2]; | |
220 | bfd_byte l_rsecnm[2]; | |
221 | }; | |
222 | ||
223 | #define LDRELSZ (2 * 4 + 2 * 2) | |
224 | ||
225 | /* The list of import files. */ | |
226 | ||
227 | struct xcoff_import_file | |
228 | { | |
229 | /* The next entry in the list. */ | |
230 | struct xcoff_import_file *next; | |
231 | /* The path. */ | |
232 | const char *path; | |
233 | /* The file name. */ | |
234 | const char *file; | |
235 | /* The member name. */ | |
236 | const char *member; | |
237 | }; | |
238 | ||
aadf04f7 SS |
239 | /* An entry in the XCOFF linker hash table. */ |
240 | ||
241 | struct xcoff_link_hash_entry | |
242 | { | |
243 | struct bfd_link_hash_entry root; | |
244 | ||
aadf04f7 SS |
245 | /* Symbol index in output file. Set to -1 initially. Set to -2 if |
246 | there is a reloc against this symbol. */ | |
247 | long indx; | |
248 | ||
28a0c103 ILT |
249 | /* If we have created a TOC entry for this symbol, this is the .tc |
250 | section which holds it. */ | |
251 | asection *toc_section; | |
252 | ||
230de6b8 ILT |
253 | union |
254 | { | |
255 | /* If we have created a TOC entry (the XCOFF_SET_TOC flag is | |
256 | set), this is the offset in toc_section. */ | |
257 | bfd_vma toc_offset; | |
258 | /* If the TOC entry comes from an input file, this is set to the | |
a8a3d83a | 259 | symbol index of the C_HIDEXT XMC_TC or XMC_TD symbol. */ |
230de6b8 ILT |
260 | long toc_indx; |
261 | } u; | |
28a0c103 ILT |
262 | |
263 | /* If this symbol is a function entry point which is called, this | |
ee174815 ILT |
264 | field holds a pointer to the function descriptor. If this symbol |
265 | is a function descriptor, this field holds a pointer to the | |
266 | function entry point. */ | |
28a0c103 ILT |
267 | struct xcoff_link_hash_entry *descriptor; |
268 | ||
269 | /* The .loader symbol table entry, if there is one. */ | |
270 | struct internal_ldsym *ldsym; | |
271 | ||
e8c4696e ILT |
272 | /* If XCOFF_BUILT_LDSYM is set, this is the .loader symbol table |
273 | index. If XCOFF_BUILD_LDSYM is clear, and XCOFF_IMPORT is set, | |
274 | this is the l_ifile value. */ | |
28a0c103 ILT |
275 | long ldindx; |
276 | ||
277 | /* Some linker flags. */ | |
278 | unsigned short flags; | |
279 | /* Symbol is referenced by a regular object. */ | |
280 | #define XCOFF_REF_REGULAR (01) | |
281 | /* Symbol is defined by a regular object. */ | |
282 | #define XCOFF_DEF_REGULAR (02) | |
0634a431 ILT |
283 | /* Symbol is defined by a dynamic object. */ |
284 | #define XCOFF_DEF_DYNAMIC (04) | |
28a0c103 ILT |
285 | /* Symbol is used in a reloc being copied into the .loader section. */ |
286 | #define XCOFF_LDREL (010) | |
287 | /* Symbol is the entry point. */ | |
288 | #define XCOFF_ENTRY (020) | |
289 | /* Symbol is called; this is, it appears in a R_BR reloc. */ | |
290 | #define XCOFF_CALLED (040) | |
291 | /* Symbol needs the TOC entry filled in. */ | |
292 | #define XCOFF_SET_TOC (0100) | |
293 | /* Symbol is explicitly imported. */ | |
294 | #define XCOFF_IMPORT (0200) | |
295 | /* Symbol is explicitly exported. */ | |
296 | #define XCOFF_EXPORT (0400) | |
297 | /* Symbol has been processed by xcoff_build_ldsyms. */ | |
298 | #define XCOFF_BUILT_LDSYM (01000) | |
299 | /* Symbol is mentioned by a section which was not garbage collected. */ | |
300 | #define XCOFF_MARK (02000) | |
2d7de17d ILT |
301 | /* Symbol size is recorded in size_list list from hash table. */ |
302 | #define XCOFF_HAS_SIZE (04000) | |
ee174815 ILT |
303 | /* Symbol is a function descriptor. */ |
304 | #define XCOFF_DESCRIPTOR (010000) | |
fbc4ed7d ILT |
305 | /* Multiple definitions have been for the symbol. */ |
306 | #define XCOFF_MULTIPLY_DEFINED (020000) | |
28a0c103 ILT |
307 | |
308 | /* The storage mapping class. */ | |
309 | unsigned char smclas; | |
aadf04f7 SS |
310 | }; |
311 | ||
312 | /* The XCOFF linker hash table. */ | |
313 | ||
314 | struct xcoff_link_hash_table | |
315 | { | |
316 | struct bfd_link_hash_table root; | |
317 | ||
318 | /* The .debug string hash table. We need to compute this while | |
319 | reading the input files, so that we know how large the .debug | |
320 | section will be before we assign section positions. */ | |
321 | struct bfd_strtab_hash *debug_strtab; | |
322 | ||
323 | /* The .debug section we will use for the final output. */ | |
324 | asection *debug_section; | |
28a0c103 ILT |
325 | |
326 | /* The .loader section we will use for the final output. */ | |
327 | asection *loader_section; | |
328 | ||
329 | /* A count of non TOC relative relocs which will need to be | |
330 | allocated in the .loader section. */ | |
331 | size_t ldrel_count; | |
332 | ||
333 | /* The .loader section header. */ | |
334 | struct internal_ldhdr ldhdr; | |
335 | ||
336 | /* The .gl section we use to hold global linkage code. */ | |
337 | asection *linkage_section; | |
338 | ||
339 | /* The .tc section we use to hold toc entries we build for global | |
340 | linkage code. */ | |
341 | asection *toc_section; | |
342 | ||
ee174815 ILT |
343 | /* The .ds section we use to hold function descriptors which we |
344 | create for exported symbols. */ | |
345 | asection *descriptor_section; | |
346 | ||
28a0c103 ILT |
347 | /* The list of import files. */ |
348 | struct xcoff_import_file *imports; | |
349 | ||
350 | /* Required alignment of sections within the output file. */ | |
351 | unsigned long file_align; | |
352 | ||
353 | /* Whether the .text section must be read-only. */ | |
354 | boolean textro; | |
355 | ||
356 | /* Whether garbage collection was done. */ | |
357 | boolean gc; | |
2d7de17d ILT |
358 | |
359 | /* A linked list of symbols for which we have size information. */ | |
360 | struct xcoff_link_size_list | |
361 | { | |
362 | struct xcoff_link_size_list *next; | |
363 | struct xcoff_link_hash_entry *h; | |
364 | bfd_size_type size; | |
365 | } *size_list; | |
ee174815 ILT |
366 | |
367 | /* Magic sections: _text, _etext, _data, _edata, _end, end. */ | |
368 | asection *special_sections[6]; | |
aadf04f7 SS |
369 | }; |
370 | ||
28a0c103 ILT |
371 | /* Information we keep for each section in the output file during the |
372 | final link phase. */ | |
aadf04f7 SS |
373 | |
374 | struct xcoff_link_section_info | |
375 | { | |
376 | /* The relocs to be output. */ | |
377 | struct internal_reloc *relocs; | |
378 | /* For each reloc against a global symbol whose index was not known | |
379 | when the reloc was handled, the global hash table entry. */ | |
380 | struct xcoff_link_hash_entry **rel_hashes; | |
2d7de17d ILT |
381 | /* If there is a TOC relative reloc against a global symbol, and the |
382 | index of the TOC symbol is not known when the reloc was handled, | |
383 | an entry is added to this linked list. This is not an array, | |
384 | like rel_hashes, because this case is quite uncommon. */ | |
385 | struct xcoff_toc_rel_hash | |
386 | { | |
387 | struct xcoff_toc_rel_hash *next; | |
388 | struct xcoff_link_hash_entry *h; | |
389 | struct internal_reloc *rel; | |
390 | } *toc_rel_hashes; | |
aadf04f7 SS |
391 | }; |
392 | ||
393 | /* Information that we pass around while doing the final link step. */ | |
394 | ||
395 | struct xcoff_final_link_info | |
396 | { | |
397 | /* General link information. */ | |
398 | struct bfd_link_info *info; | |
399 | /* Output BFD. */ | |
400 | bfd *output_bfd; | |
401 | /* Hash table for long symbol names. */ | |
402 | struct bfd_strtab_hash *strtab; | |
403 | /* Array of information kept for each output section, indexed by the | |
404 | target_index field. */ | |
405 | struct xcoff_link_section_info *section_info; | |
406 | /* Symbol index of last C_FILE symbol (-1 if none). */ | |
407 | long last_file_index; | |
408 | /* Contents of last C_FILE symbol. */ | |
409 | struct internal_syment last_file; | |
410 | /* Symbol index of TOC symbol. */ | |
411 | long toc_symindx; | |
28a0c103 ILT |
412 | /* Start of .loader symbols. */ |
413 | struct external_ldsym *ldsym; | |
414 | /* Next .loader reloc to swap out. */ | |
415 | struct external_ldrel *ldrel; | |
f630a0a4 ILT |
416 | /* File position of start of line numbers. */ |
417 | file_ptr line_filepos; | |
aadf04f7 SS |
418 | /* Buffer large enough to hold swapped symbols of any input file. */ |
419 | struct internal_syment *internal_syms; | |
420 | /* Buffer large enough to hold output indices of symbols of any | |
421 | input file. */ | |
422 | long *sym_indices; | |
423 | /* Buffer large enough to hold output symbols for any input file. */ | |
424 | bfd_byte *outsyms; | |
425 | /* Buffer large enough to hold external line numbers for any input | |
426 | section. */ | |
427 | bfd_byte *linenos; | |
428 | /* Buffer large enough to hold any input section. */ | |
429 | bfd_byte *contents; | |
430 | /* Buffer large enough to hold external relocs of any input section. */ | |
431 | bfd_byte *external_relocs; | |
432 | }; | |
433 | ||
0634a431 ILT |
434 | static void xcoff_swap_ldhdr_in |
435 | PARAMS ((bfd *, const struct external_ldhdr *, struct internal_ldhdr *)); | |
28a0c103 ILT |
436 | static void xcoff_swap_ldhdr_out |
437 | PARAMS ((bfd *, const struct internal_ldhdr *, struct external_ldhdr *)); | |
0634a431 ILT |
438 | static void xcoff_swap_ldsym_in |
439 | PARAMS ((bfd *, const struct external_ldsym *, struct internal_ldsym *)); | |
28a0c103 ILT |
440 | static void xcoff_swap_ldsym_out |
441 | PARAMS ((bfd *, const struct internal_ldsym *, struct external_ldsym *)); | |
f5d65485 ILT |
442 | static void xcoff_swap_ldrel_in |
443 | PARAMS ((bfd *, const struct external_ldrel *, struct internal_ldrel *)); | |
28a0c103 ILT |
444 | static void xcoff_swap_ldrel_out |
445 | PARAMS ((bfd *, const struct internal_ldrel *, struct external_ldrel *)); | |
aadf04f7 SS |
446 | static struct bfd_hash_entry *xcoff_link_hash_newfunc |
447 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
28a0c103 ILT |
448 | static struct internal_reloc *xcoff_read_internal_relocs |
449 | PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean, | |
450 | struct internal_reloc *)); | |
aadf04f7 SS |
451 | static boolean xcoff_link_add_object_symbols |
452 | PARAMS ((bfd *, struct bfd_link_info *)); | |
453 | static boolean xcoff_link_check_archive_element | |
454 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
455 | static boolean xcoff_link_check_ar_symbols | |
456 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
f5d65485 ILT |
457 | static boolean xcoff_link_check_dynamic_ar_symbols |
458 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
f630a0a4 ILT |
459 | static bfd_size_type xcoff_find_reloc |
460 | PARAMS ((struct internal_reloc *, bfd_size_type, bfd_vma)); | |
aadf04f7 | 461 | static boolean xcoff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *)); |
28a0c103 ILT |
462 | static boolean xcoff_link_add_dynamic_symbols |
463 | PARAMS ((bfd *, struct bfd_link_info *)); | |
464 | static boolean xcoff_mark PARAMS ((struct bfd_link_info *, asection *)); | |
465 | static void xcoff_sweep PARAMS ((struct bfd_link_info *)); | |
466 | static boolean xcoff_build_ldsyms | |
467 | PARAMS ((struct xcoff_link_hash_entry *, PTR)); | |
aadf04f7 SS |
468 | static boolean xcoff_link_input_bfd |
469 | PARAMS ((struct xcoff_final_link_info *, bfd *)); | |
470 | static boolean xcoff_write_global_symbol | |
471 | PARAMS ((struct xcoff_link_hash_entry *, PTR)); | |
472 | static boolean xcoff_reloc_link_order | |
473 | PARAMS ((bfd *, struct xcoff_final_link_info *, asection *, | |
474 | struct bfd_link_order *)); | |
475 | static int xcoff_sort_relocs PARAMS ((const PTR, const PTR)); | |
28a0c103 | 476 | \f |
0634a431 ILT |
477 | /* Routines to swap information in the XCOFF .loader section. If we |
478 | ever need to write an XCOFF loader, this stuff will need to be | |
479 | moved to another file shared by the linker (which XCOFF calls the | |
480 | ``binder'') and the loader. */ | |
481 | ||
482 | /* Swap in the ldhdr structure. */ | |
483 | ||
484 | static void | |
485 | xcoff_swap_ldhdr_in (abfd, src, dst) | |
486 | bfd *abfd; | |
487 | const struct external_ldhdr *src; | |
488 | struct internal_ldhdr *dst; | |
489 | { | |
490 | dst->l_version = bfd_get_32 (abfd, src->l_version); | |
491 | dst->l_nsyms = bfd_get_32 (abfd, src->l_nsyms); | |
492 | dst->l_nreloc = bfd_get_32 (abfd, src->l_nreloc); | |
493 | dst->l_istlen = bfd_get_32 (abfd, src->l_istlen); | |
494 | dst->l_nimpid = bfd_get_32 (abfd, src->l_nimpid); | |
495 | dst->l_impoff = bfd_get_32 (abfd, src->l_impoff); | |
496 | dst->l_stlen = bfd_get_32 (abfd, src->l_stlen); | |
497 | dst->l_stoff = bfd_get_32 (abfd, src->l_stoff); | |
498 | } | |
28a0c103 ILT |
499 | |
500 | /* Swap out the ldhdr structure. */ | |
501 | ||
502 | static void | |
503 | xcoff_swap_ldhdr_out (abfd, src, dst) | |
504 | bfd *abfd; | |
505 | const struct internal_ldhdr *src; | |
506 | struct external_ldhdr *dst; | |
507 | { | |
508 | bfd_put_32 (abfd, src->l_version, dst->l_version); | |
509 | bfd_put_32 (abfd, src->l_nsyms, dst->l_nsyms); | |
510 | bfd_put_32 (abfd, src->l_nreloc, dst->l_nreloc); | |
511 | bfd_put_32 (abfd, src->l_istlen, dst->l_istlen); | |
512 | bfd_put_32 (abfd, src->l_nimpid, dst->l_nimpid); | |
513 | bfd_put_32 (abfd, src->l_impoff, dst->l_impoff); | |
514 | bfd_put_32 (abfd, src->l_stlen, dst->l_stlen); | |
515 | bfd_put_32 (abfd, src->l_stoff, dst->l_stoff); | |
516 | } | |
517 | ||
0634a431 ILT |
518 | /* Swap in the ldsym structure. */ |
519 | ||
520 | static void | |
521 | xcoff_swap_ldsym_in (abfd, src, dst) | |
522 | bfd *abfd; | |
523 | const struct external_ldsym *src; | |
524 | struct internal_ldsym *dst; | |
525 | { | |
526 | if (bfd_get_32 (abfd, src->_l._l_l._l_zeroes) != 0) | |
527 | memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN); | |
528 | else | |
529 | { | |
530 | dst->_l._l_l._l_zeroes = 0; | |
531 | dst->_l._l_l._l_offset = bfd_get_32 (abfd, src->_l._l_l._l_offset); | |
532 | } | |
533 | dst->l_value = bfd_get_32 (abfd, src->l_value); | |
534 | dst->l_scnum = bfd_get_16 (abfd, src->l_scnum); | |
535 | dst->l_smtype = bfd_get_8 (abfd, src->l_smtype); | |
536 | dst->l_smclas = bfd_get_8 (abfd, src->l_smclas); | |
537 | dst->l_ifile = bfd_get_32 (abfd, src->l_ifile); | |
538 | dst->l_parm = bfd_get_32 (abfd, src->l_parm); | |
539 | } | |
540 | ||
28a0c103 ILT |
541 | /* Swap out the ldsym structure. */ |
542 | ||
543 | static void | |
544 | xcoff_swap_ldsym_out (abfd, src, dst) | |
545 | bfd *abfd; | |
546 | const struct internal_ldsym *src; | |
547 | struct external_ldsym *dst; | |
548 | { | |
549 | if (src->_l._l_l._l_zeroes != 0) | |
550 | memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN); | |
551 | else | |
552 | { | |
553 | bfd_put_32 (abfd, 0, dst->_l._l_l._l_zeroes); | |
554 | bfd_put_32 (abfd, src->_l._l_l._l_offset, dst->_l._l_l._l_offset); | |
555 | } | |
556 | bfd_put_32 (abfd, src->l_value, dst->l_value); | |
557 | bfd_put_16 (abfd, src->l_scnum, dst->l_scnum); | |
558 | bfd_put_8 (abfd, src->l_smtype, dst->l_smtype); | |
559 | bfd_put_8 (abfd, src->l_smclas, dst->l_smclas); | |
560 | bfd_put_32 (abfd, src->l_ifile, dst->l_ifile); | |
561 | bfd_put_32 (abfd, src->l_parm, dst->l_parm); | |
562 | } | |
aadf04f7 | 563 | |
f5d65485 ILT |
564 | /* Swap in the ldrel structure. */ |
565 | ||
566 | static void | |
567 | xcoff_swap_ldrel_in (abfd, src, dst) | |
568 | bfd *abfd; | |
569 | const struct external_ldrel *src; | |
570 | struct internal_ldrel *dst; | |
571 | { | |
572 | dst->l_vaddr = bfd_get_32 (abfd, src->l_vaddr); | |
573 | dst->l_symndx = bfd_get_32 (abfd, src->l_symndx); | |
574 | dst->l_rtype = bfd_get_16 (abfd, src->l_rtype); | |
575 | dst->l_rsecnm = bfd_get_16 (abfd, src->l_rsecnm); | |
576 | } | |
0634a431 | 577 | |
28a0c103 ILT |
578 | /* Swap out the ldrel structure. */ |
579 | ||
580 | static void | |
581 | xcoff_swap_ldrel_out (abfd, src, dst) | |
582 | bfd *abfd; | |
583 | const struct internal_ldrel *src; | |
584 | struct external_ldrel *dst; | |
585 | { | |
586 | bfd_put_32 (abfd, src->l_vaddr, dst->l_vaddr); | |
587 | bfd_put_32 (abfd, src->l_symndx, dst->l_symndx); | |
588 | bfd_put_16 (abfd, src->l_rtype, dst->l_rtype); | |
589 | bfd_put_16 (abfd, src->l_rsecnm, dst->l_rsecnm); | |
590 | } | |
591 | \f | |
f5d65485 ILT |
592 | /* Routines to read XCOFF dynamic information. This don't really |
593 | belong here, but we already have the ldsym manipulation routines | |
594 | here. */ | |
595 | ||
596 | /* Read the contents of a section. */ | |
597 | ||
598 | static boolean | |
599 | xcoff_get_section_contents (abfd, sec) | |
600 | bfd *abfd; | |
601 | asection *sec; | |
602 | { | |
603 | if (coff_section_data (abfd, sec) == NULL) | |
604 | { | |
605 | sec->used_by_bfd = bfd_zalloc (abfd, | |
606 | sizeof (struct coff_section_tdata)); | |
607 | if (sec->used_by_bfd == NULL) | |
608 | return false; | |
609 | } | |
610 | ||
611 | if (coff_section_data (abfd, sec)->contents == NULL) | |
612 | { | |
613 | coff_section_data (abfd, sec)->contents = bfd_malloc (sec->_raw_size); | |
614 | if (coff_section_data (abfd, sec)->contents == NULL) | |
615 | return false; | |
616 | ||
617 | if (! bfd_get_section_contents (abfd, sec, | |
618 | coff_section_data (abfd, sec)->contents, | |
619 | (file_ptr) 0, sec->_raw_size)) | |
620 | return false; | |
621 | } | |
622 | ||
623 | return true; | |
624 | } | |
625 | ||
626 | /* Get the size required to hold the dynamic symbols. */ | |
627 | ||
628 | long | |
629 | _bfd_xcoff_get_dynamic_symtab_upper_bound (abfd) | |
630 | bfd *abfd; | |
631 | { | |
632 | asection *lsec; | |
633 | bfd_byte *contents; | |
634 | struct internal_ldhdr ldhdr; | |
635 | ||
636 | if ((abfd->flags & DYNAMIC) == 0) | |
637 | { | |
638 | bfd_set_error (bfd_error_invalid_operation); | |
639 | return -1; | |
640 | } | |
641 | ||
642 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
643 | if (lsec == NULL) | |
644 | { | |
645 | bfd_set_error (bfd_error_no_symbols); | |
646 | return -1; | |
647 | } | |
648 | ||
649 | if (! xcoff_get_section_contents (abfd, lsec)) | |
650 | return -1; | |
651 | contents = coff_section_data (abfd, lsec)->contents; | |
652 | ||
653 | xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); | |
654 | ||
655 | return (ldhdr.l_nsyms + 1) * sizeof (asymbol *); | |
656 | } | |
657 | ||
658 | /* Get the dynamic symbols. */ | |
659 | ||
660 | long | |
661 | _bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) | |
662 | bfd *abfd; | |
663 | asymbol **psyms; | |
664 | { | |
665 | asection *lsec; | |
666 | bfd_byte *contents; | |
667 | struct internal_ldhdr ldhdr; | |
668 | const char *strings; | |
669 | struct external_ldsym *elsym, *elsymend; | |
670 | coff_symbol_type *symbuf; | |
671 | ||
672 | if ((abfd->flags & DYNAMIC) == 0) | |
673 | { | |
674 | bfd_set_error (bfd_error_invalid_operation); | |
675 | return -1; | |
676 | } | |
677 | ||
678 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
679 | if (lsec == NULL) | |
680 | { | |
681 | bfd_set_error (bfd_error_no_symbols); | |
682 | return -1; | |
683 | } | |
684 | ||
685 | if (! xcoff_get_section_contents (abfd, lsec)) | |
686 | return -1; | |
687 | contents = coff_section_data (abfd, lsec)->contents; | |
688 | ||
689 | coff_section_data (abfd, lsec)->keep_contents = true; | |
690 | ||
691 | xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); | |
692 | ||
693 | strings = (char *) contents + ldhdr.l_stoff; | |
694 | ||
695 | symbuf = ((coff_symbol_type *) | |
696 | bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (coff_symbol_type))); | |
697 | if (symbuf == NULL) | |
698 | return -1; | |
699 | ||
700 | elsym = (struct external_ldsym *) (contents + LDHDRSZ); | |
701 | elsymend = elsym + ldhdr.l_nsyms; | |
702 | for (; elsym < elsymend; elsym++, symbuf++, psyms++) | |
703 | { | |
704 | struct internal_ldsym ldsym; | |
705 | ||
706 | xcoff_swap_ldsym_in (abfd, elsym, &ldsym); | |
707 | ||
708 | symbuf->symbol.the_bfd = abfd; | |
709 | ||
710 | if (ldsym._l._l_l._l_zeroes == 0) | |
711 | symbuf->symbol.name = strings + ldsym._l._l_l._l_offset; | |
712 | else | |
713 | { | |
714 | int i; | |
715 | ||
716 | for (i = 0; i < SYMNMLEN; i++) | |
717 | if (ldsym._l._l_name[i] == '\0') | |
718 | break; | |
719 | if (i < SYMNMLEN) | |
720 | symbuf->symbol.name = elsym->_l._l_name; | |
721 | else | |
722 | { | |
723 | char *c; | |
724 | ||
725 | c = bfd_alloc (abfd, SYMNMLEN + 1); | |
726 | if (c == NULL) | |
727 | return -1; | |
728 | memcpy (c, ldsym._l._l_name, SYMNMLEN); | |
729 | c[SYMNMLEN] = '\0'; | |
730 | symbuf->symbol.name = c; | |
731 | } | |
732 | } | |
733 | ||
734 | if (ldsym.l_smclas == XMC_XO) | |
735 | symbuf->symbol.section = bfd_abs_section_ptr; | |
736 | else | |
737 | symbuf->symbol.section = coff_section_from_bfd_index (abfd, | |
738 | ldsym.l_scnum); | |
739 | symbuf->symbol.value = ldsym.l_value - symbuf->symbol.section->vma; | |
740 | ||
741 | symbuf->symbol.flags = BSF_NO_FLAGS; | |
742 | if ((ldsym.l_smtype & L_EXPORT) != 0) | |
743 | symbuf->symbol.flags |= BSF_GLOBAL; | |
744 | ||
745 | /* FIXME: We have no way to record the other information stored | |
746 | with the loader symbol. */ | |
747 | ||
748 | *psyms = (asymbol *) symbuf; | |
749 | } | |
750 | ||
751 | *psyms = NULL; | |
752 | ||
753 | return ldhdr.l_nsyms; | |
754 | } | |
755 | ||
756 | /* Get the size required to hold the dynamic relocs. */ | |
757 | ||
758 | long | |
759 | _bfd_xcoff_get_dynamic_reloc_upper_bound (abfd) | |
760 | bfd *abfd; | |
761 | { | |
762 | asection *lsec; | |
763 | bfd_byte *contents; | |
764 | struct internal_ldhdr ldhdr; | |
765 | ||
766 | if ((abfd->flags & DYNAMIC) == 0) | |
767 | { | |
768 | bfd_set_error (bfd_error_invalid_operation); | |
769 | return -1; | |
770 | } | |
771 | ||
772 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
773 | if (lsec == NULL) | |
774 | { | |
775 | bfd_set_error (bfd_error_no_symbols); | |
776 | return -1; | |
777 | } | |
778 | ||
779 | if (! xcoff_get_section_contents (abfd, lsec)) | |
780 | return -1; | |
781 | contents = coff_section_data (abfd, lsec)->contents; | |
782 | ||
783 | xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); | |
784 | ||
785 | return (ldhdr.l_nreloc + 1) * sizeof (arelent *); | |
786 | } | |
787 | ||
788 | /* The typical dynamic reloc. */ | |
789 | ||
790 | static reloc_howto_type xcoff_dynamic_reloc = | |
791 | HOWTO (0, /* type */ | |
792 | 0, /* rightshift */ | |
793 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
794 | 32, /* bitsize */ | |
795 | false, /* pc_relative */ | |
796 | 0, /* bitpos */ | |
797 | complain_overflow_bitfield, /* complain_on_overflow */ | |
798 | 0, /* special_function */ | |
799 | "R_POS", /* name */ | |
800 | true, /* partial_inplace */ | |
801 | 0xffffffff, /* src_mask */ | |
802 | 0xffffffff, /* dst_mask */ | |
803 | false); /* pcrel_offset */ | |
804 | ||
805 | /* Get the dynamic relocs. */ | |
806 | ||
807 | long | |
808 | _bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms) | |
809 | bfd *abfd; | |
810 | arelent **prelocs; | |
811 | asymbol **syms; | |
812 | { | |
813 | asection *lsec; | |
814 | bfd_byte *contents; | |
815 | struct internal_ldhdr ldhdr; | |
816 | arelent *relbuf; | |
817 | struct external_ldrel *elrel, *elrelend; | |
818 | ||
819 | if ((abfd->flags & DYNAMIC) == 0) | |
820 | { | |
821 | bfd_set_error (bfd_error_invalid_operation); | |
822 | return -1; | |
823 | } | |
824 | ||
825 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
826 | if (lsec == NULL) | |
827 | { | |
828 | bfd_set_error (bfd_error_no_symbols); | |
829 | return -1; | |
830 | } | |
831 | ||
832 | if (! xcoff_get_section_contents (abfd, lsec)) | |
833 | return -1; | |
834 | contents = coff_section_data (abfd, lsec)->contents; | |
835 | ||
836 | xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); | |
837 | ||
838 | relbuf = (arelent *) bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent)); | |
839 | if (relbuf == NULL) | |
840 | return -1; | |
841 | ||
842 | elrel = ((struct external_ldrel *) | |
843 | (contents + LDHDRSZ + ldhdr.l_nsyms * LDSYMSZ)); | |
844 | elrelend = elrel + ldhdr.l_nreloc; | |
845 | for (; elrel < elrelend; elrel++, relbuf++, prelocs++) | |
846 | { | |
847 | struct internal_ldrel ldrel; | |
848 | ||
849 | xcoff_swap_ldrel_in (abfd, elrel, &ldrel); | |
850 | ||
851 | if (ldrel.l_symndx >= 3) | |
852 | relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3); | |
853 | else | |
854 | { | |
855 | const char *name; | |
856 | asection *sec; | |
857 | ||
858 | switch (ldrel.l_symndx) | |
859 | { | |
860 | case 0: | |
861 | name = ".text"; | |
862 | break; | |
863 | case 1: | |
864 | name = ".data"; | |
865 | break; | |
866 | case 2: | |
867 | name = ".bss"; | |
868 | break; | |
869 | default: | |
870 | abort (); | |
871 | break; | |
872 | } | |
873 | ||
874 | sec = bfd_get_section_by_name (abfd, name); | |
875 | if (sec == NULL) | |
876 | { | |
877 | bfd_set_error (bfd_error_bad_value); | |
878 | return -1; | |
879 | } | |
880 | ||
881 | relbuf->sym_ptr_ptr = sec->symbol_ptr_ptr; | |
882 | } | |
883 | ||
884 | relbuf->address = ldrel.l_vaddr; | |
885 | relbuf->addend = 0; | |
886 | ||
887 | /* Most dynamic relocs have the same type. FIXME: This is only | |
888 | correct if ldrel.l_rtype == 0. In other cases, we should use | |
889 | a different howto. */ | |
890 | relbuf->howto = &xcoff_dynamic_reloc; | |
891 | ||
892 | /* FIXME: We have no way to record the l_rsecnm field. */ | |
893 | ||
894 | *prelocs = relbuf; | |
895 | } | |
896 | ||
897 | *prelocs = NULL; | |
898 | ||
899 | return ldhdr.l_nreloc; | |
900 | } | |
901 | \f | |
aadf04f7 SS |
902 | /* Routine to create an entry in an XCOFF link hash table. */ |
903 | ||
904 | static struct bfd_hash_entry * | |
905 | xcoff_link_hash_newfunc (entry, table, string) | |
906 | struct bfd_hash_entry *entry; | |
907 | struct bfd_hash_table *table; | |
908 | const char *string; | |
909 | { | |
910 | struct xcoff_link_hash_entry *ret = (struct xcoff_link_hash_entry *) entry; | |
911 | ||
912 | /* Allocate the structure if it has not already been allocated by a | |
913 | subclass. */ | |
914 | if (ret == (struct xcoff_link_hash_entry *) NULL) | |
915 | ret = ((struct xcoff_link_hash_entry *) | |
916 | bfd_hash_allocate (table, sizeof (struct xcoff_link_hash_entry))); | |
917 | if (ret == (struct xcoff_link_hash_entry *) NULL) | |
a9713b91 | 918 | return (struct bfd_hash_entry *) ret; |
aadf04f7 SS |
919 | |
920 | /* Call the allocation method of the superclass. */ | |
921 | ret = ((struct xcoff_link_hash_entry *) | |
922 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
923 | table, string)); | |
924 | if (ret != NULL) | |
925 | { | |
926 | /* Set local fields. */ | |
aadf04f7 | 927 | ret->indx = -1; |
28a0c103 | 928 | ret->toc_section = NULL; |
230de6b8 | 929 | ret->u.toc_indx = -1; |
28a0c103 ILT |
930 | ret->descriptor = NULL; |
931 | ret->ldsym = NULL; | |
932 | ret->ldindx = -1; | |
933 | ret->flags = 0; | |
934 | ret->smclas = XMC_UA; | |
aadf04f7 SS |
935 | } |
936 | ||
937 | return (struct bfd_hash_entry *) ret; | |
938 | } | |
939 | ||
940 | /* Create a XCOFF link hash table. */ | |
941 | ||
942 | struct bfd_link_hash_table * | |
943 | _bfd_xcoff_bfd_link_hash_table_create (abfd) | |
944 | bfd *abfd; | |
945 | { | |
946 | struct xcoff_link_hash_table *ret; | |
947 | ||
948 | ret = ((struct xcoff_link_hash_table *) | |
949 | bfd_alloc (abfd, sizeof (struct xcoff_link_hash_table))); | |
950 | if (ret == (struct xcoff_link_hash_table *) NULL) | |
a9713b91 | 951 | return (struct bfd_link_hash_table *) NULL; |
aadf04f7 SS |
952 | if (! _bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc)) |
953 | { | |
954 | bfd_release (abfd, ret); | |
955 | return (struct bfd_link_hash_table *) NULL; | |
956 | } | |
957 | ||
958 | ret->debug_strtab = _bfd_xcoff_stringtab_init (); | |
959 | ret->debug_section = NULL; | |
28a0c103 ILT |
960 | ret->loader_section = NULL; |
961 | ret->ldrel_count = 0; | |
962 | memset (&ret->ldhdr, 0, sizeof (struct internal_ldhdr)); | |
963 | ret->linkage_section = NULL; | |
964 | ret->toc_section = NULL; | |
ee174815 | 965 | ret->descriptor_section = NULL; |
28a0c103 ILT |
966 | ret->imports = NULL; |
967 | ret->file_align = 0; | |
968 | ret->textro = false; | |
969 | ret->gc = false; | |
ee174815 | 970 | memset (ret->special_sections, 0, sizeof ret->special_sections); |
aadf04f7 | 971 | |
73246ff8 ILT |
972 | /* The linker will always generate a full a.out header. We need to |
973 | record that fact now, before the sizeof_headers routine could be | |
974 | called. */ | |
975 | xcoff_data (abfd)->full_aouthdr = true; | |
976 | ||
aadf04f7 SS |
977 | return &ret->root; |
978 | } | |
979 | ||
980 | /* Look up an entry in an XCOFF link hash table. */ | |
981 | ||
982 | #define xcoff_link_hash_lookup(table, string, create, copy, follow) \ | |
983 | ((struct xcoff_link_hash_entry *) \ | |
984 | bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\ | |
985 | (follow))) | |
986 | ||
987 | /* Traverse an XCOFF link hash table. */ | |
988 | ||
989 | #define xcoff_link_hash_traverse(table, func, info) \ | |
990 | (bfd_link_hash_traverse \ | |
991 | (&(table)->root, \ | |
992 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ | |
993 | (info))) | |
994 | ||
995 | /* Get the XCOFF link hash table from the info structure. This is | |
996 | just a cast. */ | |
997 | ||
998 | #define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash)) | |
28a0c103 ILT |
999 | \f |
1000 | /* Read internal relocs for an XCOFF csect. This is a wrapper around | |
1001 | _bfd_coff_read_internal_relocs which tries to take advantage of any | |
1002 | relocs which may have been cached for the enclosing section. */ | |
1003 | ||
1004 | static struct internal_reloc * | |
1005 | xcoff_read_internal_relocs (abfd, sec, cache, external_relocs, | |
1006 | require_internal, internal_relocs) | |
1007 | bfd *abfd; | |
1008 | asection *sec; | |
1009 | boolean cache; | |
1010 | bfd_byte *external_relocs; | |
1011 | boolean require_internal; | |
1012 | struct internal_reloc *internal_relocs; | |
1013 | { | |
1014 | if (coff_section_data (abfd, sec) != NULL | |
1015 | && coff_section_data (abfd, sec)->relocs == NULL | |
1016 | && xcoff_section_data (abfd, sec) != NULL) | |
1017 | { | |
1018 | asection *enclosing; | |
1019 | ||
1020 | enclosing = xcoff_section_data (abfd, sec)->enclosing; | |
1021 | ||
1022 | if (enclosing != NULL | |
1023 | && (coff_section_data (abfd, enclosing) == NULL | |
1024 | || coff_section_data (abfd, enclosing)->relocs == NULL) | |
aad2c618 ILT |
1025 | && cache |
1026 | && enclosing->reloc_count > 0) | |
28a0c103 ILT |
1027 | { |
1028 | if (_bfd_coff_read_internal_relocs (abfd, enclosing, true, | |
1029 | external_relocs, false, | |
1030 | (struct internal_reloc *) NULL) | |
1031 | == NULL) | |
1032 | return NULL; | |
1033 | } | |
aadf04f7 | 1034 | |
28a0c103 ILT |
1035 | if (enclosing != NULL |
1036 | && coff_section_data (abfd, enclosing) != NULL | |
1037 | && coff_section_data (abfd, enclosing)->relocs != NULL) | |
1038 | { | |
1039 | size_t off; | |
1040 | ||
1041 | off = ((sec->rel_filepos - enclosing->rel_filepos) | |
1042 | / bfd_coff_relsz (abfd)); | |
1043 | if (! require_internal) | |
1044 | return coff_section_data (abfd, enclosing)->relocs + off; | |
1045 | memcpy (internal_relocs, | |
1046 | coff_section_data (abfd, enclosing)->relocs + off, | |
1047 | sec->reloc_count * sizeof (struct internal_reloc)); | |
1048 | return internal_relocs; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | return _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs, | |
1053 | require_internal, internal_relocs); | |
1054 | } | |
1055 | \f | |
aadf04f7 SS |
1056 | /* Given an XCOFF BFD, add symbols to the global hash table as |
1057 | appropriate. */ | |
1058 | ||
1059 | boolean | |
1060 | _bfd_xcoff_bfd_link_add_symbols (abfd, info) | |
1061 | bfd *abfd; | |
1062 | struct bfd_link_info *info; | |
1063 | { | |
1064 | switch (bfd_get_format (abfd)) | |
1065 | { | |
1066 | case bfd_object: | |
1067 | return xcoff_link_add_object_symbols (abfd, info); | |
fb4dc1eb | 1068 | |
aadf04f7 | 1069 | case bfd_archive: |
fb4dc1eb ILT |
1070 | /* If the archive has a map, do the usual search. We then need |
1071 | to check the archive for stripped dynamic objects, because | |
1072 | they will not appear in the archive map even though they | |
1073 | should, perhaps, be included. If the archive has no map, we | |
1074 | just consider each object file in turn, since that apparently | |
1075 | is what the AIX native linker does. */ | |
1076 | if (bfd_has_map (abfd)) | |
1077 | { | |
1078 | if (! (_bfd_generic_link_add_archive_symbols | |
1079 | (abfd, info, xcoff_link_check_archive_element))) | |
1080 | return false; | |
1081 | } | |
1082 | ||
f5d65485 ILT |
1083 | { |
1084 | bfd *member; | |
1085 | ||
1086 | member = bfd_openr_next_archived_file (abfd, (bfd *) NULL); | |
1087 | while (member != NULL) | |
1088 | { | |
1089 | if (bfd_check_format (member, bfd_object) | |
a5c7acea ILT |
1090 | && (! bfd_has_map (abfd) |
1091 | || ((member->flags & DYNAMIC) != 0 | |
1092 | && (member->flags & HAS_SYMS) == 0))) | |
f5d65485 ILT |
1093 | { |
1094 | boolean needed; | |
1095 | ||
1096 | if (! xcoff_link_check_archive_element (member, info, &needed)) | |
1097 | return false; | |
1098 | if (needed) | |
1099 | member->archive_pass = -1; | |
1100 | } | |
1101 | member = bfd_openr_next_archived_file (abfd, member); | |
1102 | } | |
f5d65485 ILT |
1103 | } |
1104 | ||
fb4dc1eb ILT |
1105 | return true; |
1106 | ||
aadf04f7 SS |
1107 | default: |
1108 | bfd_set_error (bfd_error_wrong_format); | |
1109 | return false; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | /* Add symbols from an XCOFF object file. */ | |
1114 | ||
1115 | static boolean | |
1116 | xcoff_link_add_object_symbols (abfd, info) | |
1117 | bfd *abfd; | |
1118 | struct bfd_link_info *info; | |
1119 | { | |
1120 | if (! _bfd_coff_get_external_symbols (abfd)) | |
1121 | return false; | |
1122 | if (! xcoff_link_add_symbols (abfd, info)) | |
1123 | return false; | |
1124 | if (! info->keep_memory) | |
1125 | { | |
1126 | if (! _bfd_coff_free_symbols (abfd)) | |
1127 | return false; | |
1128 | } | |
1129 | return true; | |
1130 | } | |
1131 | ||
1132 | /* Check a single archive element to see if we need to include it in | |
1133 | the link. *PNEEDED is set according to whether this element is | |
1134 | needed in the link or not. This is called via | |
1135 | _bfd_generic_link_add_archive_symbols. */ | |
1136 | ||
1137 | static boolean | |
1138 | xcoff_link_check_archive_element (abfd, info, pneeded) | |
1139 | bfd *abfd; | |
1140 | struct bfd_link_info *info; | |
1141 | boolean *pneeded; | |
1142 | { | |
1143 | if (! _bfd_coff_get_external_symbols (abfd)) | |
1144 | return false; | |
1145 | ||
1146 | if (! xcoff_link_check_ar_symbols (abfd, info, pneeded)) | |
1147 | return false; | |
1148 | ||
1149 | if (*pneeded) | |
1150 | { | |
1151 | if (! xcoff_link_add_symbols (abfd, info)) | |
1152 | return false; | |
1153 | } | |
1154 | ||
1155 | if (! info->keep_memory || ! *pneeded) | |
1156 | { | |
1157 | if (! _bfd_coff_free_symbols (abfd)) | |
1158 | return false; | |
1159 | } | |
1160 | ||
1161 | return true; | |
1162 | } | |
1163 | ||
1164 | /* Look through the symbols to see if this object file should be | |
1165 | included in the link. */ | |
1166 | ||
1167 | static boolean | |
1168 | xcoff_link_check_ar_symbols (abfd, info, pneeded) | |
1169 | bfd *abfd; | |
1170 | struct bfd_link_info *info; | |
1171 | boolean *pneeded; | |
1172 | { | |
1173 | bfd_size_type symesz; | |
1174 | bfd_byte *esym; | |
1175 | bfd_byte *esym_end; | |
1176 | ||
1177 | *pneeded = false; | |
1178 | ||
f5d65485 ILT |
1179 | if ((abfd->flags & DYNAMIC) != 0 |
1180 | && ! info->static_link | |
1181 | && info->hash->creator == abfd->xvec) | |
1182 | return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded); | |
1183 | ||
aadf04f7 SS |
1184 | symesz = bfd_coff_symesz (abfd); |
1185 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
1186 | esym_end = esym + obj_raw_syment_count (abfd) * symesz; | |
1187 | while (esym < esym_end) | |
1188 | { | |
1189 | struct internal_syment sym; | |
1190 | ||
1191 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
1192 | ||
1193 | if (sym.n_sclass == C_EXT && sym.n_scnum != N_UNDEF) | |
1194 | { | |
1195 | const char *name; | |
1196 | char buf[SYMNMLEN + 1]; | |
1197 | struct bfd_link_hash_entry *h; | |
1198 | ||
1199 | /* This symbol is externally visible, and is defined by this | |
1200 | object file. */ | |
1201 | ||
1202 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
1203 | if (name == NULL) | |
1204 | return false; | |
1205 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
1206 | ||
1207 | /* We are only interested in symbols that are currently | |
1208 | undefined. If a symbol is currently known to be common, | |
1209 | XCOFF linkers do not bring in an object file which | |
28a0c103 ILT |
1210 | defines it. We also don't bring in symbols to satisfy |
1211 | undefined references in shared objects. */ | |
aadf04f7 | 1212 | if (h != (struct bfd_link_hash_entry *) NULL |
a8a3d83a ILT |
1213 | && h->type == bfd_link_hash_undefined |
1214 | && (info->hash->creator != abfd->xvec | |
1215 | || (((struct xcoff_link_hash_entry *) h)->flags | |
1216 | & XCOFF_DEF_DYNAMIC) == 0)) | |
aadf04f7 SS |
1217 | { |
1218 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
1219 | return false; | |
1220 | *pneeded = true; | |
1221 | return true; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | esym += (sym.n_numaux + 1) * symesz; | |
1226 | } | |
1227 | ||
1228 | /* We do not need this object file. */ | |
1229 | return true; | |
1230 | } | |
1231 | ||
f5d65485 ILT |
1232 | /* Look through the loader symbols to see if this dynamic object |
1233 | should be included in the link. The native linker uses the loader | |
1234 | symbols, not the normal symbol table, so we do too. */ | |
1235 | ||
1236 | static boolean | |
1237 | xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded) | |
1238 | bfd *abfd; | |
1239 | struct bfd_link_info *info; | |
1240 | boolean *pneeded; | |
1241 | { | |
1242 | asection *lsec; | |
1243 | bfd_byte *buf; | |
1244 | struct internal_ldhdr ldhdr; | |
1245 | const char *strings; | |
1246 | struct external_ldsym *elsym, *elsymend; | |
1247 | ||
1248 | *pneeded = false; | |
1249 | ||
1250 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
1251 | if (lsec == NULL) | |
1252 | { | |
1253 | /* There are no symbols, so don't try to include it. */ | |
1254 | return true; | |
1255 | } | |
1256 | ||
1257 | if (! xcoff_get_section_contents (abfd, lsec)) | |
1258 | return false; | |
1259 | buf = coff_section_data (abfd, lsec)->contents; | |
1260 | ||
1261 | xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr); | |
1262 | ||
1263 | strings = (char *) buf + ldhdr.l_stoff; | |
1264 | ||
1265 | elsym = (struct external_ldsym *) (buf + LDHDRSZ); | |
1266 | elsymend = elsym + ldhdr.l_nsyms; | |
1267 | for (; elsym < elsymend; elsym++) | |
1268 | { | |
1269 | struct internal_ldsym ldsym; | |
1270 | char nambuf[SYMNMLEN + 1]; | |
1271 | const char *name; | |
1272 | struct bfd_link_hash_entry *h; | |
1273 | ||
1274 | xcoff_swap_ldsym_in (abfd, elsym, &ldsym); | |
1275 | ||
1276 | /* We are only interested in exported symbols. */ | |
1277 | if ((ldsym.l_smtype & L_EXPORT) == 0) | |
1278 | continue; | |
1279 | ||
1280 | if (ldsym._l._l_l._l_zeroes == 0) | |
1281 | name = strings + ldsym._l._l_l._l_offset; | |
1282 | else | |
1283 | { | |
1284 | memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); | |
1285 | nambuf[SYMNMLEN] = '\0'; | |
1286 | name = nambuf; | |
1287 | } | |
1288 | ||
1289 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
1290 | ||
1291 | /* We are only interested in symbols that are currently | |
a8a3d83a ILT |
1292 | undefined. At this point we know that we are using an XCOFF |
1293 | hash table. */ | |
1294 | if (h != NULL | |
1295 | && h->type == bfd_link_hash_undefined | |
1296 | && (((struct xcoff_link_hash_entry *) h)->flags | |
1297 | & XCOFF_DEF_DYNAMIC) == 0) | |
f5d65485 ILT |
1298 | { |
1299 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
1300 | return false; | |
1301 | *pneeded = true; | |
1302 | return true; | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | /* We do not need this shared object. */ | |
1307 | ||
1308 | if (buf != NULL && ! coff_section_data (abfd, lsec)->keep_contents) | |
1309 | { | |
1310 | free (coff_section_data (abfd, lsec)->contents); | |
1311 | coff_section_data (abfd, lsec)->contents = NULL; | |
1312 | } | |
1313 | ||
1314 | return true; | |
1315 | } | |
1316 | ||
f630a0a4 ILT |
1317 | /* Returns the index of reloc in RELOCS with the least address greater |
1318 | than or equal to ADDRESS. The relocs are sorted by address. */ | |
1319 | ||
1320 | static bfd_size_type | |
1321 | xcoff_find_reloc (relocs, count, address) | |
1322 | struct internal_reloc *relocs; | |
1323 | bfd_size_type count; | |
1324 | bfd_vma address; | |
1325 | { | |
1326 | bfd_size_type min, max, this; | |
1327 | ||
1328 | if (count < 2) | |
7812bf9c ILT |
1329 | { |
1330 | if (count == 1 && relocs[0].r_vaddr < address) | |
1331 | return 1; | |
1332 | else | |
1333 | return 0; | |
1334 | } | |
f630a0a4 ILT |
1335 | |
1336 | min = 0; | |
1337 | max = count; | |
1338 | ||
1339 | /* Do a binary search over (min,max]. */ | |
1340 | while (min + 1 < max) | |
1341 | { | |
1342 | bfd_vma raddr; | |
1343 | ||
1344 | this = (max + min) / 2; | |
1345 | raddr = relocs[this].r_vaddr; | |
1346 | if (raddr > address) | |
1347 | max = this; | |
1348 | else if (raddr < address) | |
1349 | min = this; | |
1350 | else | |
1351 | { | |
1352 | min = this; | |
1353 | break; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | if (relocs[min].r_vaddr < address) | |
1358 | return min + 1; | |
1359 | ||
1360 | while (min > 0 | |
1361 | && relocs[min - 1].r_vaddr == address) | |
1362 | --min; | |
1363 | ||
1364 | return min; | |
1365 | } | |
1366 | ||
aadf04f7 SS |
1367 | /* Add all the symbols from an object file to the hash table. |
1368 | ||
1369 | XCOFF is a weird format. A normal XCOFF .o files will have three | |
1370 | COFF sections--.text, .data, and .bss--but each COFF section will | |
1371 | contain many csects. These csects are described in the symbol | |
1372 | table. From the linker's point of view, each csect must be | |
1373 | considered a section in its own right. For example, a TOC entry is | |
1374 | handled as a small XMC_TC csect. The linker must be able to merge | |
1375 | different TOC entries together, which means that it must be able to | |
1376 | extract the XMC_TC csects from the .data section of the input .o | |
1377 | file. | |
1378 | ||
1379 | From the point of view of our linker, this is, of course, a hideous | |
1380 | nightmare. We cope by actually creating sections for each csect, | |
1381 | and discarding the original sections. We then have to handle the | |
1382 | relocation entries carefully, since the only way to tell which | |
1383 | csect they belong to is to examine the address. */ | |
1384 | ||
1385 | static boolean | |
1386 | xcoff_link_add_symbols (abfd, info) | |
1387 | bfd *abfd; | |
1388 | struct bfd_link_info *info; | |
1389 | { | |
28a0c103 ILT |
1390 | unsigned int n_tmask; |
1391 | unsigned int n_btshft; | |
aadf04f7 SS |
1392 | boolean default_copy; |
1393 | bfd_size_type symcount; | |
1394 | struct xcoff_link_hash_entry **sym_hash; | |
1395 | asection **csect_cache; | |
28a0c103 | 1396 | bfd_size_type linesz; |
583db7a8 ILT |
1397 | asection *o; |
1398 | asection *last_real; | |
28a0c103 | 1399 | boolean keep_syms; |
aadf04f7 SS |
1400 | asection *csect; |
1401 | unsigned int csect_index; | |
1402 | asection *first_csect; | |
aadf04f7 SS |
1403 | bfd_size_type symesz; |
1404 | bfd_byte *esym; | |
1405 | bfd_byte *esym_end; | |
1406 | struct reloc_info_struct | |
1407 | { | |
1408 | struct internal_reloc *relocs; | |
28a0c103 ILT |
1409 | asection **csects; |
1410 | bfd_byte *linenos; | |
aadf04f7 SS |
1411 | } *reloc_info = NULL; |
1412 | ||
e8c4696e ILT |
1413 | keep_syms = obj_coff_keep_syms (abfd); |
1414 | ||
28a0c103 ILT |
1415 | if ((abfd->flags & DYNAMIC) != 0 |
1416 | && ! info->static_link) | |
c9746fb6 ILT |
1417 | { |
1418 | if (! xcoff_link_add_dynamic_symbols (abfd, info)) | |
1419 | return false; | |
1420 | } | |
28a0c103 | 1421 | |
a8a3d83a | 1422 | if (info->hash->creator == abfd->xvec) |
28a0c103 | 1423 | { |
a8a3d83a ILT |
1424 | /* We need to build a .loader section, so we do it here. This |
1425 | won't work if we're producing an XCOFF output file with no | |
1426 | XCOFF input files. FIXME. */ | |
1427 | if (xcoff_hash_table (info)->loader_section == NULL) | |
1428 | { | |
1429 | asection *lsec; | |
28a0c103 | 1430 | |
a8a3d83a ILT |
1431 | lsec = bfd_make_section_anyway (abfd, ".loader"); |
1432 | if (lsec == NULL) | |
1433 | goto error_return; | |
1434 | xcoff_hash_table (info)->loader_section = lsec; | |
1435 | lsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
1436 | } | |
1437 | /* Likewise for the linkage section. */ | |
1438 | if (xcoff_hash_table (info)->linkage_section == NULL) | |
1439 | { | |
1440 | asection *lsec; | |
28a0c103 | 1441 | |
a8a3d83a ILT |
1442 | lsec = bfd_make_section_anyway (abfd, ".gl"); |
1443 | if (lsec == NULL) | |
1444 | goto error_return; | |
1445 | xcoff_hash_table (info)->linkage_section = lsec; | |
1446 | lsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
1447 | | SEC_IN_MEMORY); | |
1448 | lsec->alignment_power = 2; | |
1449 | } | |
1450 | /* Likewise for the TOC section. */ | |
1451 | if (xcoff_hash_table (info)->toc_section == NULL) | |
1452 | { | |
1453 | asection *tsec; | |
28a0c103 | 1454 | |
a8a3d83a ILT |
1455 | tsec = bfd_make_section_anyway (abfd, ".tc"); |
1456 | if (tsec == NULL) | |
1457 | goto error_return; | |
1458 | xcoff_hash_table (info)->toc_section = tsec; | |
1459 | tsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
1460 | | SEC_IN_MEMORY); | |
1461 | tsec->alignment_power = 2; | |
1462 | } | |
1463 | /* Likewise for the descriptor section. */ | |
1464 | if (xcoff_hash_table (info)->descriptor_section == NULL) | |
1465 | { | |
1466 | asection *dsec; | |
ee174815 | 1467 | |
a8a3d83a ILT |
1468 | dsec = bfd_make_section_anyway (abfd, ".ds"); |
1469 | if (dsec == NULL) | |
1470 | goto error_return; | |
1471 | xcoff_hash_table (info)->descriptor_section = dsec; | |
1472 | dsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
1473 | | SEC_IN_MEMORY); | |
1474 | dsec->alignment_power = 2; | |
1475 | } | |
1476 | /* Likewise for the .debug section. */ | |
1477 | if (xcoff_hash_table (info)->debug_section == NULL) | |
1478 | { | |
1479 | asection *dsec; | |
28a0c103 | 1480 | |
a8a3d83a ILT |
1481 | dsec = bfd_make_section_anyway (abfd, ".debug"); |
1482 | if (dsec == NULL) | |
1483 | goto error_return; | |
1484 | xcoff_hash_table (info)->debug_section = dsec; | |
1485 | dsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
1486 | } | |
28a0c103 ILT |
1487 | } |
1488 | ||
c9746fb6 ILT |
1489 | if ((abfd->flags & DYNAMIC) != 0 |
1490 | && ! info->static_link) | |
1491 | return true; | |
1492 | ||
1493 | n_tmask = coff_data (abfd)->local_n_tmask; | |
1494 | n_btshft = coff_data (abfd)->local_n_btshft; | |
1495 | ||
1496 | /* Define macros so that ISFCN, et. al., macros work correctly. */ | |
1497 | #define N_TMASK n_tmask | |
1498 | #define N_BTSHFT n_btshft | |
1499 | ||
aadf04f7 SS |
1500 | if (info->keep_memory) |
1501 | default_copy = false; | |
1502 | else | |
1503 | default_copy = true; | |
1504 | ||
1505 | symcount = obj_raw_syment_count (abfd); | |
1506 | ||
1507 | /* We keep a list of the linker hash table entries that correspond | |
1508 | to each external symbol. */ | |
1509 | sym_hash = ((struct xcoff_link_hash_entry **) | |
1510 | bfd_alloc (abfd, | |
1511 | (symcount | |
1512 | * sizeof (struct xcoff_link_hash_entry *)))); | |
1513 | if (sym_hash == NULL && symcount != 0) | |
a9713b91 | 1514 | goto error_return; |
aadf04f7 SS |
1515 | coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash; |
1516 | memset (sym_hash, 0, | |
1517 | (size_t) symcount * sizeof (struct xcoff_link_hash_entry *)); | |
1518 | ||
1519 | /* Because of the weird stuff we are doing with XCOFF csects, we can | |
1520 | not easily determine which section a symbol is in, so we store | |
1521 | the information in the tdata for the input file. */ | |
1522 | csect_cache = ((asection **) | |
1523 | bfd_alloc (abfd, symcount * sizeof (asection *))); | |
1524 | if (csect_cache == NULL && symcount != 0) | |
a9713b91 | 1525 | goto error_return; |
aadf04f7 SS |
1526 | xcoff_data (abfd)->csects = csect_cache; |
1527 | memset (csect_cache, 0, (size_t) symcount * sizeof (asection *)); | |
1528 | ||
aadf04f7 SS |
1529 | /* While splitting sections into csects, we need to assign the |
1530 | relocs correctly. The relocs and the csects must both be in | |
1531 | order by VMA within a given section, so we handle this by | |
1532 | scanning along the relocs as we process the csects. We index | |
1533 | into reloc_info using the section target_index. */ | |
1534 | reloc_info = ((struct reloc_info_struct *) | |
58142f10 ILT |
1535 | bfd_malloc ((abfd->section_count + 1) |
1536 | * sizeof (struct reloc_info_struct))); | |
aadf04f7 | 1537 | if (reloc_info == NULL) |
58142f10 | 1538 | goto error_return; |
aadf04f7 SS |
1539 | memset ((PTR) reloc_info, 0, |
1540 | (abfd->section_count + 1) * sizeof (struct reloc_info_struct)); | |
1541 | ||
28a0c103 ILT |
1542 | /* Read in the relocs and line numbers for each section. */ |
1543 | linesz = bfd_coff_linesz (abfd); | |
583db7a8 ILT |
1544 | last_real = NULL; |
1545 | for (o = abfd->sections; o != NULL; o = o->next) | |
aadf04f7 | 1546 | { |
583db7a8 ILT |
1547 | last_real = o; |
1548 | if ((o->flags & SEC_RELOC) != 0) | |
aadf04f7 | 1549 | { |
583db7a8 ILT |
1550 | reloc_info[o->target_index].relocs = |
1551 | xcoff_read_internal_relocs (abfd, o, true, (bfd_byte *) NULL, | |
28a0c103 | 1552 | false, (struct internal_reloc *) NULL); |
583db7a8 | 1553 | reloc_info[o->target_index].csects = |
58142f10 | 1554 | (asection **) bfd_malloc (o->reloc_count * sizeof (asection *)); |
583db7a8 | 1555 | if (reloc_info[o->target_index].csects == NULL) |
58142f10 | 1556 | goto error_return; |
583db7a8 ILT |
1557 | memset (reloc_info[o->target_index].csects, 0, |
1558 | o->reloc_count * sizeof (asection *)); | |
28a0c103 ILT |
1559 | } |
1560 | ||
1561 | if ((info->strip == strip_none || info->strip == strip_some) | |
583db7a8 | 1562 | && o->lineno_count > 0) |
28a0c103 ILT |
1563 | { |
1564 | bfd_byte *linenos; | |
1565 | ||
58142f10 | 1566 | linenos = (bfd_byte *) bfd_malloc (o->lineno_count * linesz); |
28a0c103 | 1567 | if (linenos == NULL) |
58142f10 | 1568 | goto error_return; |
583db7a8 ILT |
1569 | reloc_info[o->target_index].linenos = linenos; |
1570 | if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0 | |
1571 | || (bfd_read (linenos, linesz, o->lineno_count, abfd) | |
1572 | != linesz * o->lineno_count)) | |
28a0c103 | 1573 | goto error_return; |
aadf04f7 SS |
1574 | } |
1575 | } | |
1576 | ||
28a0c103 | 1577 | /* Don't let the linker relocation routines discard the symbols. */ |
28a0c103 ILT |
1578 | obj_coff_keep_syms (abfd) = true; |
1579 | ||
aadf04f7 SS |
1580 | csect = NULL; |
1581 | csect_index = 0; | |
1582 | first_csect = NULL; | |
aadf04f7 SS |
1583 | |
1584 | symesz = bfd_coff_symesz (abfd); | |
1585 | BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); | |
1586 | esym = (bfd_byte *) obj_coff_external_syms (abfd); | |
1587 | esym_end = esym + symcount * symesz; | |
1588 | while (esym < esym_end) | |
1589 | { | |
1590 | struct internal_syment sym; | |
1591 | union internal_auxent aux; | |
28a0c103 | 1592 | const char *name; |
aadf04f7 SS |
1593 | char buf[SYMNMLEN + 1]; |
1594 | int smtyp; | |
1595 | flagword flags; | |
1596 | asection *section; | |
1597 | bfd_vma value; | |
28a0c103 | 1598 | struct xcoff_link_hash_entry *set_toc; |
aadf04f7 SS |
1599 | |
1600 | bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); | |
1601 | ||
aadf04f7 SS |
1602 | /* In this pass we are only interested in symbols with csect |
1603 | information. */ | |
1604 | if (sym.n_sclass != C_EXT && sym.n_sclass != C_HIDEXT) | |
1605 | { | |
28a0c103 ILT |
1606 | if (sym.n_sclass == C_FILE && csect != NULL) |
1607 | { | |
1608 | xcoff_section_data (abfd, csect)->last_symndx = | |
1609 | ((esym | |
1610 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1611 | / symesz); | |
1612 | csect = NULL; | |
1613 | } | |
1614 | ||
aadf04f7 SS |
1615 | if (csect != NULL) |
1616 | *csect_cache = csect; | |
28a0c103 | 1617 | else if (first_csect == NULL || sym.n_sclass == C_FILE) |
aadf04f7 SS |
1618 | *csect_cache = coff_section_from_bfd_index (abfd, sym.n_scnum); |
1619 | else | |
1620 | *csect_cache = NULL; | |
1621 | esym += (sym.n_numaux + 1) * symesz; | |
1622 | sym_hash += sym.n_numaux + 1; | |
1623 | csect_cache += sym.n_numaux + 1; | |
aadf04f7 SS |
1624 | continue; |
1625 | } | |
1626 | ||
1627 | name = _bfd_coff_internal_syment_name (abfd, &sym, buf); | |
1628 | if (name == NULL) | |
1629 | goto error_return; | |
1630 | ||
28a0c103 ILT |
1631 | /* If this symbol has line number information attached to it, |
1632 | and we're not stripping it, count the number of entries and | |
1633 | add them to the count for this csect. In the final link pass | |
1634 | we are going to attach line number information by symbol, | |
1635 | rather than by section, in order to more easily handle | |
1636 | garbage collection. */ | |
1637 | if ((info->strip == strip_none || info->strip == strip_some) | |
1638 | && sym.n_numaux > 1 | |
1639 | && csect != NULL | |
1640 | && ISFCN (sym.n_type)) | |
1641 | { | |
1642 | union internal_auxent auxlin; | |
1643 | ||
1644 | bfd_coff_swap_aux_in (abfd, (PTR) (esym + symesz), | |
1645 | sym.n_type, sym.n_sclass, | |
1646 | 0, sym.n_numaux, (PTR) &auxlin); | |
1647 | if (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) | |
1648 | { | |
1649 | asection *enclosing; | |
1650 | bfd_size_type linoff; | |
1651 | ||
1652 | enclosing = xcoff_section_data (abfd, csect)->enclosing; | |
b73322d9 ILT |
1653 | if (enclosing == NULL) |
1654 | { | |
1655 | (*_bfd_error_handler) | |
1656 | ("%s: `%s' has line numbers but no enclosing section", | |
1657 | bfd_get_filename (abfd), name); | |
1658 | bfd_set_error (bfd_error_bad_value); | |
1659 | goto error_return; | |
1660 | } | |
28a0c103 ILT |
1661 | linoff = (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr |
1662 | - enclosing->line_filepos); | |
1663 | if (linoff < enclosing->lineno_count * linesz) | |
1664 | { | |
1665 | struct internal_lineno lin; | |
1666 | bfd_byte *linpstart; | |
1667 | ||
1668 | linpstart = (reloc_info[enclosing->target_index].linenos | |
1669 | + linoff); | |
1670 | bfd_coff_swap_lineno_in (abfd, (PTR) linpstart, (PTR) &lin); | |
1671 | if (lin.l_lnno == 0 | |
1672 | && ((bfd_size_type) lin.l_addr.l_symndx | |
1673 | == ((esym | |
1674 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1675 | / symesz))) | |
1676 | { | |
1677 | bfd_byte *linpend, *linp; | |
1678 | ||
1679 | linpend = (reloc_info[enclosing->target_index].linenos | |
1680 | + enclosing->lineno_count * linesz); | |
1681 | for (linp = linpstart + linesz; | |
1682 | linp < linpend; | |
1683 | linp += linesz) | |
1684 | { | |
1685 | bfd_coff_swap_lineno_in (abfd, (PTR) linp, | |
1686 | (PTR) &lin); | |
1687 | if (lin.l_lnno == 0) | |
1688 | break; | |
1689 | } | |
1690 | csect->lineno_count += (linp - linpstart) / linesz; | |
f78195df ILT |
1691 | /* The setting of line_filepos will only be |
1692 | useful if all the line number entries for a | |
1693 | csect are contiguous; this only matters for | |
1694 | error reporting. */ | |
1695 | if (csect->line_filepos == 0) | |
1696 | csect->line_filepos = | |
1697 | auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
28a0c103 ILT |
1698 | } |
1699 | } | |
1700 | } | |
1701 | } | |
1702 | ||
aadf04f7 SS |
1703 | /* Pick up the csect auxiliary information. */ |
1704 | ||
1705 | if (sym.n_numaux == 0) | |
1706 | { | |
1707 | (*_bfd_error_handler) | |
1708 | ("%s: class %d symbol `%s' has no aux entries", | |
1709 | bfd_get_filename (abfd), sym.n_sclass, name); | |
1710 | bfd_set_error (bfd_error_bad_value); | |
1711 | goto error_return; | |
1712 | } | |
1713 | ||
1714 | bfd_coff_swap_aux_in (abfd, | |
1715 | (PTR) (esym + symesz * sym.n_numaux), | |
1716 | sym.n_type, sym.n_sclass, | |
1717 | sym.n_numaux - 1, sym.n_numaux, | |
1718 | (PTR) &aux); | |
1719 | ||
1720 | smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); | |
1721 | ||
1722 | flags = BSF_GLOBAL; | |
1723 | section = NULL; | |
1724 | value = 0; | |
28a0c103 | 1725 | set_toc = NULL; |
aadf04f7 SS |
1726 | |
1727 | switch (smtyp) | |
1728 | { | |
1729 | default: | |
1730 | (*_bfd_error_handler) | |
1731 | ("%s: symbol `%s' has unrecognized csect type %d", | |
1732 | bfd_get_filename (abfd), name, smtyp); | |
1733 | bfd_set_error (bfd_error_bad_value); | |
1734 | goto error_return; | |
1735 | ||
1736 | case XTY_ER: | |
1737 | /* This is an external reference. */ | |
1738 | if (sym.n_sclass == C_HIDEXT | |
1739 | || sym.n_scnum != N_UNDEF | |
1740 | || aux.x_csect.x_scnlen.l != 0) | |
1741 | { | |
1742 | (*_bfd_error_handler) | |
1743 | ("%s: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d", | |
1744 | bfd_get_filename (abfd), name, sym.n_sclass, sym.n_scnum, | |
1745 | aux.x_csect.x_scnlen.l); | |
1746 | bfd_set_error (bfd_error_bad_value); | |
1747 | goto error_return; | |
1748 | } | |
417acf22 ILT |
1749 | |
1750 | /* An XMC_XO external reference is actually a reference to | |
1751 | an absolute location. */ | |
1752 | if (aux.x_csect.x_smclas != XMC_XO) | |
1753 | section = bfd_und_section_ptr; | |
1754 | else | |
1755 | { | |
1756 | section = bfd_abs_section_ptr; | |
1757 | value = sym.n_value; | |
1758 | } | |
aadf04f7 SS |
1759 | break; |
1760 | ||
1761 | case XTY_SD: | |
1762 | /* This is a csect definition. */ | |
1763 | ||
28a0c103 ILT |
1764 | if (csect != NULL) |
1765 | { | |
1766 | xcoff_section_data (abfd, csect)->last_symndx = | |
1767 | ((esym | |
1768 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1769 | / symesz); | |
1770 | } | |
1771 | ||
aadf04f7 SS |
1772 | csect = NULL; |
1773 | csect_index = -1; | |
1774 | ||
1775 | /* When we see a TOC anchor, we record the TOC value. */ | |
1776 | if (aux.x_csect.x_smclas == XMC_TC0) | |
1777 | { | |
1778 | if (sym.n_sclass != C_HIDEXT | |
1779 | || aux.x_csect.x_scnlen.l != 0) | |
1780 | { | |
1781 | (*_bfd_error_handler) | |
1782 | ("%s: XMC_TC0 symbol `%s' is class %d scnlen %d", | |
1783 | bfd_get_filename (abfd), name, sym.n_sclass, | |
1784 | aux.x_csect.x_scnlen.l); | |
1785 | bfd_set_error (bfd_error_bad_value); | |
1786 | goto error_return; | |
1787 | } | |
1788 | xcoff_data (abfd)->toc = sym.n_value; | |
1789 | } | |
1790 | ||
1791 | /* We must merge TOC entries for the same symbol. We can | |
1792 | merge two TOC entries if they are both C_HIDEXT, they | |
1793 | both have the same name, they are both 4 bytes long, and | |
1794 | they both have a relocation table entry for an external | |
1795 | symbol with the same name. Unfortunately, this means | |
1796 | that we must look through the relocations. Ick. */ | |
1797 | if (aux.x_csect.x_smclas == XMC_TC | |
1798 | && sym.n_sclass == C_HIDEXT | |
28a0c103 ILT |
1799 | && aux.x_csect.x_scnlen.l == 4 |
1800 | && info->hash->creator == abfd->xvec) | |
aadf04f7 SS |
1801 | { |
1802 | asection *enclosing; | |
f630a0a4 | 1803 | struct internal_reloc *relocs; |
aadf04f7 SS |
1804 | bfd_size_type relindx; |
1805 | struct internal_reloc *rel; | |
aadf04f7 SS |
1806 | |
1807 | enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
1808 | if (enclosing == NULL) | |
28a0c103 | 1809 | goto error_return; |
aadf04f7 | 1810 | |
f630a0a4 ILT |
1811 | relocs = reloc_info[enclosing->target_index].relocs; |
1812 | relindx = xcoff_find_reloc (relocs, enclosing->reloc_count, | |
1813 | sym.n_value); | |
1814 | rel = relocs + relindx; | |
1815 | if (relindx < enclosing->reloc_count | |
1816 | && rel->r_vaddr == (bfd_vma) sym.n_value | |
1817 | && rel->r_size == 31 | |
1818 | && rel->r_type == R_POS) | |
aadf04f7 SS |
1819 | { |
1820 | bfd_byte *erelsym; | |
1821 | struct internal_syment relsym; | |
1822 | ||
1823 | erelsym = ((bfd_byte *) obj_coff_external_syms (abfd) | |
1824 | + rel->r_symndx * symesz); | |
1825 | bfd_coff_swap_sym_in (abfd, (PTR) erelsym, (PTR) &relsym); | |
1826 | if (relsym.n_sclass == C_EXT) | |
1827 | { | |
1828 | const char *relname; | |
1829 | char relbuf[SYMNMLEN + 1]; | |
1830 | boolean copy; | |
1831 | struct xcoff_link_hash_entry *h; | |
1832 | ||
1833 | /* At this point we know that the TOC entry is | |
1834 | for an externally visible symbol. */ | |
1835 | relname = _bfd_coff_internal_syment_name (abfd, &relsym, | |
1836 | relbuf); | |
1837 | if (relname == NULL) | |
28a0c103 | 1838 | goto error_return; |
aadf04f7 | 1839 | |
867d923d ILT |
1840 | /* We only merge TOC entries if the TC name is |
1841 | the same as the symbol name. This handles | |
1842 | the normal case, but not common cases like | |
1843 | SYM.P4 which gcc generates to store SYM + 4 | |
1844 | in the TOC. FIXME. */ | |
1845 | if (strcmp (name, relname) == 0) | |
aadf04f7 | 1846 | { |
867d923d ILT |
1847 | copy = (! info->keep_memory |
1848 | || relsym._n._n_n._n_zeroes != 0 | |
1849 | || relsym._n._n_n._n_offset == 0); | |
1850 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
1851 | relname, true, copy, | |
1852 | false); | |
1853 | if (h == NULL) | |
1854 | goto error_return; | |
1855 | ||
1856 | /* At this point h->root.type could be | |
1857 | bfd_link_hash_new. That should be OK, | |
1858 | since we know for sure that we will come | |
1859 | across this symbol as we step through the | |
1860 | file. */ | |
1861 | ||
1862 | /* We store h in *sym_hash for the | |
1863 | convenience of the relocate_section | |
1864 | function. */ | |
1865 | *sym_hash = h; | |
1866 | ||
1867 | if (h->toc_section != NULL) | |
1868 | { | |
f630a0a4 ILT |
1869 | asection **rel_csects; |
1870 | ||
867d923d ILT |
1871 | /* We already have a TOC entry for this |
1872 | symbol, so we can just ignore this | |
1873 | one. */ | |
f630a0a4 ILT |
1874 | rel_csects = |
1875 | reloc_info[enclosing->target_index].csects; | |
1876 | rel_csects[relindx] = bfd_und_section_ptr; | |
867d923d ILT |
1877 | break; |
1878 | } | |
aadf04f7 | 1879 | |
867d923d ILT |
1880 | /* We are about to create a TOC entry for |
1881 | this symbol. */ | |
1882 | set_toc = h; | |
1883 | } | |
aadf04f7 SS |
1884 | } |
1885 | } | |
1886 | } | |
1887 | ||
1888 | /* We need to create a new section. We get the name from | |
1889 | the csect storage mapping class, so that the linker can | |
1890 | accumulate similar csects together. */ | |
1891 | { | |
1892 | static const char *csect_name_by_class[] = | |
1893 | { | |
1894 | ".pr", ".ro", ".db", ".tc", ".ua", ".rw", ".gl", ".xo", | |
1895 | ".sv", ".bs", ".ds", ".uc", ".ti", ".tb", NULL, ".tc0", | |
1896 | ".td" | |
1897 | }; | |
1898 | const char *csect_name; | |
1899 | asection *enclosing; | |
aadf04f7 SS |
1900 | |
1901 | if ((aux.x_csect.x_smclas >= | |
1902 | sizeof csect_name_by_class / sizeof csect_name_by_class[0]) | |
1903 | || csect_name_by_class[aux.x_csect.x_smclas] == NULL) | |
1904 | { | |
1905 | (*_bfd_error_handler) | |
1906 | ("%s: symbol `%s' has unrecognized smclas %d", | |
1907 | bfd_get_filename (abfd), name, aux.x_csect.x_smclas); | |
1908 | bfd_set_error (bfd_error_bad_value); | |
1909 | goto error_return; | |
1910 | } | |
1911 | ||
1912 | csect_name = csect_name_by_class[aux.x_csect.x_smclas]; | |
1913 | csect = bfd_make_section_anyway (abfd, csect_name); | |
1914 | if (csect == NULL) | |
1915 | goto error_return; | |
1916 | enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); | |
1917 | if (enclosing == NULL) | |
1918 | goto error_return; | |
697a8fe8 ILT |
1919 | if (! bfd_is_abs_section (enclosing) |
1920 | && ((bfd_vma) sym.n_value < enclosing->vma | |
1921 | || ((bfd_vma) sym.n_value + aux.x_csect.x_scnlen.l | |
1922 | > enclosing->vma + enclosing->_raw_size))) | |
aadf04f7 SS |
1923 | { |
1924 | (*_bfd_error_handler) | |
1925 | ("%s: csect `%s' not in enclosing section", | |
1926 | bfd_get_filename (abfd), name); | |
1927 | bfd_set_error (bfd_error_bad_value); | |
1928 | goto error_return; | |
1929 | } | |
1930 | csect->vma = sym.n_value; | |
1931 | csect->filepos = (enclosing->filepos | |
1932 | + sym.n_value | |
1933 | - enclosing->vma); | |
1934 | csect->_raw_size = aux.x_csect.x_scnlen.l; | |
1935 | csect->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
1936 | csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); | |
1937 | ||
28a0c103 ILT |
1938 | /* Record the enclosing section in the tdata for this new |
1939 | section. */ | |
1940 | csect->used_by_bfd = | |
1941 | ((struct coff_section_tdata *) | |
1942 | bfd_zalloc (abfd, sizeof (struct coff_section_tdata))); | |
1943 | if (csect->used_by_bfd == NULL) | |
a9713b91 | 1944 | goto error_return; |
28a0c103 ILT |
1945 | coff_section_data (abfd, csect)->tdata = |
1946 | bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata)); | |
1947 | if (coff_section_data (abfd, csect)->tdata == NULL) | |
a9713b91 | 1948 | goto error_return; |
28a0c103 | 1949 | xcoff_section_data (abfd, csect)->enclosing = enclosing; |
b73322d9 ILT |
1950 | xcoff_section_data (abfd, csect)->lineno_count = |
1951 | enclosing->lineno_count; | |
28a0c103 | 1952 | |
697a8fe8 | 1953 | if (enclosing->owner == abfd) |
aadf04f7 | 1954 | { |
f630a0a4 ILT |
1955 | struct internal_reloc *relocs; |
1956 | bfd_size_type relindx; | |
1957 | struct internal_reloc *rel; | |
1958 | asection **rel_csect; | |
1959 | ||
1960 | relocs = reloc_info[enclosing->target_index].relocs; | |
1961 | relindx = xcoff_find_reloc (relocs, enclosing->reloc_count, | |
1962 | csect->vma); | |
1963 | rel = relocs + relindx; | |
1964 | rel_csect = (reloc_info[enclosing->target_index].csects | |
1965 | + relindx); | |
1966 | csect->rel_filepos = (enclosing->rel_filepos | |
1967 | + relindx * bfd_coff_relsz (abfd)); | |
697a8fe8 ILT |
1968 | while (relindx < enclosing->reloc_count |
1969 | && *rel_csect == NULL | |
697a8fe8 ILT |
1970 | && rel->r_vaddr < csect->vma + csect->_raw_size) |
1971 | { | |
1972 | *rel_csect = csect; | |
1973 | csect->flags |= SEC_RELOC; | |
1974 | ++csect->reloc_count; | |
1975 | ++relindx; | |
1976 | ++rel; | |
1977 | ++rel_csect; | |
aadf04f7 | 1978 | } |
aadf04f7 SS |
1979 | } |
1980 | ||
1981 | /* There are a number of other fields and section flags | |
1982 | which we do not bother to set. */ | |
1983 | ||
aadf04f7 SS |
1984 | csect_index = ((esym |
1985 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
1986 | / symesz); | |
1987 | ||
28a0c103 ILT |
1988 | xcoff_section_data (abfd, csect)->first_symndx = csect_index; |
1989 | ||
aadf04f7 SS |
1990 | if (first_csect == NULL) |
1991 | first_csect = csect; | |
1992 | ||
1993 | /* If this symbol is C_EXT, we treat it as starting at the | |
1994 | beginning of the newly created section. */ | |
1995 | if (sym.n_sclass == C_EXT) | |
1996 | { | |
1997 | section = csect; | |
1998 | value = 0; | |
1999 | } | |
28a0c103 ILT |
2000 | |
2001 | /* If this is a TOC section for a symbol, record it. */ | |
2002 | if (set_toc != NULL) | |
230de6b8 | 2003 | set_toc->toc_section = csect; |
aadf04f7 SS |
2004 | } |
2005 | break; | |
2006 | ||
2007 | case XTY_LD: | |
2008 | /* This is a label definition. The x_scnlen field is the | |
2009 | symbol index of the csect. I believe that this must | |
2010 | always follow the appropriate XTY_SD symbol, so I will | |
2011 | insist on it. */ | |
2012 | { | |
2013 | boolean bad; | |
2014 | ||
2015 | bad = false; | |
28a0c103 | 2016 | if (aux.x_csect.x_scnlen.l < 0 |
aadf04f7 SS |
2017 | || (aux.x_csect.x_scnlen.l |
2018 | >= esym - (bfd_byte *) obj_coff_external_syms (abfd))) | |
2019 | bad = true; | |
2020 | if (! bad) | |
2021 | { | |
2022 | section = xcoff_data (abfd)->csects[aux.x_csect.x_scnlen.l]; | |
2023 | if (section == NULL | |
2024 | || (section->flags & SEC_HAS_CONTENTS) == 0) | |
2025 | bad = true; | |
2026 | } | |
2027 | if (bad) | |
2028 | { | |
2029 | (*_bfd_error_handler) | |
2030 | ("%s: misplaced XTY_LD `%s'", | |
2031 | bfd_get_filename (abfd), name); | |
2032 | bfd_set_error (bfd_error_bad_value); | |
2033 | goto error_return; | |
2034 | } | |
2035 | ||
2036 | value = sym.n_value - csect->vma; | |
2037 | } | |
2038 | break; | |
2039 | ||
2040 | case XTY_CM: | |
2041 | /* This is an unitialized csect. We could base the name on | |
2042 | the storage mapping class, but we don't bother. If this | |
2043 | csect is externally visible, it is a common symbol. */ | |
28a0c103 ILT |
2044 | |
2045 | if (csect != NULL) | |
aadf04f7 | 2046 | { |
28a0c103 ILT |
2047 | xcoff_section_data (abfd, csect)->last_symndx = |
2048 | ((esym | |
2049 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
2050 | / symesz); | |
aadf04f7 | 2051 | } |
28a0c103 ILT |
2052 | |
2053 | csect = bfd_make_section_anyway (abfd, ".bss"); | |
2054 | if (csect == NULL) | |
2055 | goto error_return; | |
867d923d | 2056 | csect->vma = sym.n_value; |
28a0c103 ILT |
2057 | csect->_raw_size = aux.x_csect.x_scnlen.l; |
2058 | csect->flags |= SEC_ALLOC; | |
2059 | csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); | |
2060 | /* There are a number of other fields and section flags | |
2061 | which we do not bother to set. */ | |
2062 | ||
2063 | csect_index = ((esym | |
2064 | - (bfd_byte *) obj_coff_external_syms (abfd)) | |
2065 | / symesz); | |
2066 | ||
2067 | csect->used_by_bfd = | |
2068 | ((struct coff_section_tdata *) | |
2069 | bfd_zalloc (abfd, sizeof (struct coff_section_tdata))); | |
2070 | if (csect->used_by_bfd == NULL) | |
a9713b91 | 2071 | goto error_return; |
28a0c103 ILT |
2072 | coff_section_data (abfd, csect)->tdata = |
2073 | bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata)); | |
2074 | if (coff_section_data (abfd, csect)->tdata == NULL) | |
a9713b91 | 2075 | goto error_return; |
28a0c103 ILT |
2076 | xcoff_section_data (abfd, csect)->first_symndx = csect_index; |
2077 | ||
2078 | if (first_csect == NULL) | |
2079 | first_csect = csect; | |
2080 | ||
2081 | if (sym.n_sclass == C_EXT) | |
2082 | { | |
2083 | csect->flags |= SEC_IS_COMMON; | |
aad2c618 | 2084 | csect->_raw_size = 0; |
28a0c103 ILT |
2085 | section = csect; |
2086 | value = aux.x_csect.x_scnlen.l; | |
aadf04f7 | 2087 | } |
28a0c103 | 2088 | |
aadf04f7 SS |
2089 | break; |
2090 | } | |
2091 | ||
ee174815 ILT |
2092 | /* Check for magic symbol names. */ |
2093 | if ((smtyp == XTY_SD || smtyp == XTY_CM) | |
a8a3d83a ILT |
2094 | && aux.x_csect.x_smclas != XMC_TC |
2095 | && aux.x_csect.x_smclas != XMC_TD) | |
ee174815 ILT |
2096 | { |
2097 | int i; | |
2098 | ||
2099 | i = -1; | |
2100 | if (name[0] == '_') | |
2101 | { | |
2102 | if (strcmp (name, "_text") == 0) | |
2103 | i = 0; | |
2104 | else if (strcmp (name, "_etext") == 0) | |
2105 | i = 1; | |
2106 | else if (strcmp (name, "_data") == 0) | |
2107 | i = 2; | |
2108 | else if (strcmp (name, "_edata") == 0) | |
2109 | i = 3; | |
2110 | else if (strcmp (name, "_end") == 0) | |
2111 | i = 4; | |
2112 | } | |
2113 | else if (name[0] == 'e' && strcmp (name, "end") == 0) | |
2114 | i = 5; | |
2115 | ||
2116 | if (i != -1) | |
2117 | xcoff_hash_table (info)->special_sections[i] = csect; | |
2118 | } | |
2119 | ||
aadf04f7 SS |
2120 | /* Now we have enough information to add the symbol to the |
2121 | linker hash table. */ | |
2122 | ||
2123 | if (sym.n_sclass == C_EXT) | |
2124 | { | |
2125 | boolean copy; | |
2126 | ||
2127 | BFD_ASSERT (section != NULL); | |
2128 | ||
2129 | /* We must copy the name into memory if we got it from the | |
2130 | syment itself, rather than the string table. */ | |
2131 | copy = default_copy; | |
2132 | if (sym._n._n_n._n_zeroes != 0 | |
2133 | || sym._n._n_n._n_offset == 0) | |
2134 | copy = true; | |
2135 | ||
fbc4ed7d ILT |
2136 | /* The AIX linker appears to only detect multiple symbol |
2137 | definitions when there is a reference to the symbol. If | |
2138 | a symbol is defined multiple times, and the only | |
2139 | references are from the same object file, the AIX linker | |
2140 | appears to permit it. It does not merge the different | |
2141 | definitions, but handles them independently. On the | |
2142 | other hand, if there is a reference, the linker reports | |
2143 | an error. | |
2144 | ||
2145 | This matters because the AIX <net/net_globals.h> header | |
2146 | file actually defines an initialized array, so we have to | |
2147 | actually permit that to work. | |
2148 | ||
2149 | We also have to handle the case of statically linking a | |
2150 | shared object, which will cause symbol redefinitions, | |
2151 | although this is an easier case to detect. */ | |
2152 | ||
28a0c103 ILT |
2153 | if (info->hash->creator == abfd->xvec) |
2154 | { | |
c3dffbd7 ILT |
2155 | if (! bfd_is_und_section (section)) |
2156 | *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
2157 | name, true, copy, false); | |
2158 | else | |
2159 | *sym_hash = ((struct xcoff_link_hash_entry *) | |
2160 | bfd_wrapped_link_hash_lookup (abfd, info, name, | |
2161 | true, copy, false)); | |
28a0c103 ILT |
2162 | if (*sym_hash == NULL) |
2163 | goto error_return; | |
2164 | if (((*sym_hash)->root.type == bfd_link_hash_defined | |
2165 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
2166 | && ! bfd_is_und_section (section) | |
2167 | && ! bfd_is_com_section (section)) | |
2168 | { | |
fbc4ed7d | 2169 | /* This is a second definition of a defined symbol. */ |
a8a3d83a ILT |
2170 | if ((abfd->flags & DYNAMIC) != 0 |
2171 | && ((*sym_hash)->smclas != XMC_GL | |
2172 | || aux.x_csect.x_smclas == XMC_GL | |
2173 | || ((*sym_hash)->root.u.def.section->owner->flags | |
2174 | & DYNAMIC) == 0)) | |
28a0c103 | 2175 | { |
fbc4ed7d ILT |
2176 | /* The new symbol is from a shared library, and |
2177 | either the existing symbol is not global | |
2178 | linkage code or this symbol is global linkage | |
2179 | code. If the existing symbol is global | |
2180 | linkage code and the new symbol is not, then | |
2181 | we want to use the new symbol. */ | |
28a0c103 ILT |
2182 | section = bfd_und_section_ptr; |
2183 | value = 0; | |
2184 | } | |
2185 | else if (((*sym_hash)->root.u.def.section->owner->flags | |
2186 | & DYNAMIC) != 0) | |
2187 | { | |
fbc4ed7d ILT |
2188 | /* The existing symbol is from a shared library. |
2189 | Replace it. */ | |
28a0c103 ILT |
2190 | (*sym_hash)->root.type = bfd_link_hash_undefined; |
2191 | (*sym_hash)->root.u.undef.abfd = | |
2192 | (*sym_hash)->root.u.def.section->owner; | |
2193 | } | |
fbc4ed7d ILT |
2194 | else if ((*sym_hash)->root.next != NULL |
2195 | || info->hash->undefs_tail == &(*sym_hash)->root) | |
2196 | { | |
2197 | /* This symbol has been referenced. In this | |
2198 | case, we just continue and permit the | |
2199 | multiple definition error. See the comment | |
2200 | above about the behaviour of the AIX linker. */ | |
2201 | } | |
2202 | else if ((*sym_hash)->smclas == aux.x_csect.x_smclas) | |
2203 | { | |
2204 | /* The symbols are both csects of the same | |
2205 | class. There is at least a chance that this | |
2206 | is a semi-legitimate redefinition. */ | |
2207 | section = bfd_und_section_ptr; | |
2208 | value = 0; | |
2209 | (*sym_hash)->flags |= XCOFF_MULTIPLY_DEFINED; | |
2210 | } | |
2211 | } | |
2212 | else if (((*sym_hash)->flags & XCOFF_MULTIPLY_DEFINED) != 0 | |
2213 | && ((*sym_hash)->root.type == bfd_link_hash_defined | |
2214 | || (*sym_hash)->root.type == bfd_link_hash_defweak) | |
2215 | && (bfd_is_und_section (section) | |
2216 | || bfd_is_com_section (section))) | |
2217 | { | |
2218 | /* This is a reference to a multiply defined symbol. | |
2219 | Report the error now. See the comment above | |
2220 | about the behaviour of the AIX linker. We could | |
2221 | also do this with warning symbols, but I'm not | |
2222 | sure the XCOFF linker is wholly prepared to | |
2223 | handle them, and that would only be a warning, | |
2224 | not an error. */ | |
2225 | if (! ((*info->callbacks->multiple_definition) | |
2226 | (info, (*sym_hash)->root.root.string, | |
2227 | (bfd *) NULL, (asection *) NULL, 0, | |
2228 | (*sym_hash)->root.u.def.section->owner, | |
2229 | (*sym_hash)->root.u.def.section, | |
2230 | (*sym_hash)->root.u.def.value))) | |
2231 | goto error_return; | |
2232 | /* Try not to give this error too many times. */ | |
2233 | (*sym_hash)->flags &= ~XCOFF_MULTIPLY_DEFINED; | |
28a0c103 ILT |
2234 | } |
2235 | } | |
2236 | ||
583db7a8 ILT |
2237 | /* _bfd_generic_link_add_one_symbol may call the linker to |
2238 | generate an error message, and the linker may try to read | |
2239 | the symbol table to give a good error. Right now, the | |
2240 | line numbers are in an inconsistent state, since they are | |
2241 | counted both in the real sections and in the new csects. | |
2242 | We need to leave the count in the real sections so that | |
2243 | the linker can report the line number of the error | |
2244 | correctly, so temporarily clobber the link to the csects | |
2245 | so that the linker will not try to read the line numbers | |
2246 | a second time from the csects. */ | |
2247 | BFD_ASSERT (last_real->next == first_csect); | |
2248 | last_real->next = NULL; | |
aadf04f7 SS |
2249 | if (! (_bfd_generic_link_add_one_symbol |
2250 | (info, abfd, name, flags, section, value, | |
aad2c618 | 2251 | (const char *) NULL, copy, true, |
aadf04f7 SS |
2252 | (struct bfd_link_hash_entry **) sym_hash))) |
2253 | goto error_return; | |
583db7a8 | 2254 | last_real->next = first_csect; |
aadf04f7 | 2255 | |
867d923d ILT |
2256 | if (smtyp == XTY_CM) |
2257 | { | |
2258 | if ((*sym_hash)->root.type != bfd_link_hash_common | |
2259 | || (*sym_hash)->root.u.c.p->section != csect) | |
2260 | { | |
2261 | /* We don't need the common csect we just created. */ | |
2262 | csect->_raw_size = 0; | |
2263 | } | |
2264 | else | |
2265 | { | |
2266 | (*sym_hash)->root.u.c.p->alignment_power | |
2267 | = csect->alignment_power; | |
2268 | } | |
2269 | } | |
2270 | ||
aadf04f7 | 2271 | if (info->hash->creator == abfd->xvec) |
28a0c103 ILT |
2272 | { |
2273 | int flag; | |
2274 | ||
2275 | if (smtyp == XTY_ER || smtyp == XTY_CM) | |
2276 | flag = XCOFF_REF_REGULAR; | |
2277 | else | |
2278 | flag = XCOFF_DEF_REGULAR; | |
2279 | (*sym_hash)->flags |= flag; | |
2280 | ||
2d7de17d ILT |
2281 | if ((*sym_hash)->smclas == XMC_UA |
2282 | || flag == XCOFF_DEF_REGULAR) | |
28a0c103 ILT |
2283 | (*sym_hash)->smclas = aux.x_csect.x_smclas; |
2284 | } | |
aadf04f7 SS |
2285 | } |
2286 | ||
2287 | *csect_cache = csect; | |
2288 | ||
2289 | esym += (sym.n_numaux + 1) * symesz; | |
2290 | sym_hash += sym.n_numaux + 1; | |
2291 | csect_cache += sym.n_numaux + 1; | |
aadf04f7 SS |
2292 | } |
2293 | ||
583db7a8 ILT |
2294 | BFD_ASSERT (last_real == NULL || last_real->next == first_csect); |
2295 | ||
28a0c103 | 2296 | /* Make sure that we have seen all the relocs. */ |
583db7a8 | 2297 | for (o = abfd->sections; o != first_csect; o = o->next) |
aadf04f7 | 2298 | { |
a8a3d83a | 2299 | /* Reset the section size and the line number count, since the |
583db7a8 ILT |
2300 | data is now attached to the csects. Don't reset the size of |
2301 | the .debug section, since we need to read it below in | |
2302 | bfd_xcoff_size_dynamic_sections. */ | |
2303 | if (strcmp (bfd_get_section_name (abfd, o), ".debug") != 0) | |
2304 | o->_raw_size = 0; | |
2305 | o->lineno_count = 0; | |
2306 | ||
2307 | if ((o->flags & SEC_RELOC) != 0) | |
aadf04f7 SS |
2308 | { |
2309 | bfd_size_type i; | |
28a0c103 ILT |
2310 | struct internal_reloc *rel; |
2311 | asection **rel_csect; | |
aadf04f7 | 2312 | |
583db7a8 ILT |
2313 | rel = reloc_info[o->target_index].relocs; |
2314 | rel_csect = reloc_info[o->target_index].csects; | |
2315 | for (i = 0; i < o->reloc_count; i++, rel++, rel_csect++) | |
aadf04f7 | 2316 | { |
28a0c103 | 2317 | if (*rel_csect == NULL) |
aadf04f7 SS |
2318 | { |
2319 | (*_bfd_error_handler) | |
2320 | ("%s: reloc %s:%d not in csect", | |
583db7a8 | 2321 | bfd_get_filename (abfd), o->name, i); |
aadf04f7 SS |
2322 | bfd_set_error (bfd_error_bad_value); |
2323 | goto error_return; | |
2324 | } | |
28a0c103 | 2325 | |
867d923d ILT |
2326 | /* We identify all symbols which are called, so that we |
2327 | can create glue code for calls to functions imported | |
2328 | from dynamic objects. */ | |
28a0c103 | 2329 | if (info->hash->creator == abfd->xvec |
867d923d ILT |
2330 | && *rel_csect != bfd_und_section_ptr |
2331 | && (rel->r_type == R_BR | |
2332 | || rel->r_type == R_RBR) | |
2333 | && obj_xcoff_sym_hashes (abfd)[rel->r_symndx] != NULL) | |
28a0c103 ILT |
2334 | { |
2335 | struct xcoff_link_hash_entry *h; | |
2336 | ||
867d923d ILT |
2337 | h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx]; |
2338 | h->flags |= XCOFF_CALLED; | |
2339 | /* If the symbol name starts with a period, it is | |
2340 | the code of a function. If the symbol is | |
2341 | currently undefined, then add an undefined symbol | |
2342 | for the function descriptor. This should do no | |
2343 | harm, because any regular object that defines the | |
2344 | function should also define the function | |
2345 | descriptor. It helps, because it means that we | |
2346 | will identify the function descriptor with a | |
2347 | dynamic object if a dynamic object defines it. */ | |
2348 | if (h->root.root.string[0] == '.' | |
2349 | && h->descriptor == NULL) | |
28a0c103 | 2350 | { |
867d923d ILT |
2351 | struct xcoff_link_hash_entry *hds; |
2352 | ||
2353 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
2354 | h->root.root.string + 1, | |
2355 | true, false, true); | |
2356 | if (hds == NULL) | |
2357 | goto error_return; | |
2358 | if (hds->root.type == bfd_link_hash_new) | |
28a0c103 | 2359 | { |
867d923d ILT |
2360 | if (! (_bfd_generic_link_add_one_symbol |
2361 | (info, abfd, hds->root.root.string, | |
2362 | (flagword) 0, bfd_und_section_ptr, | |
2363 | (bfd_vma) 0, (const char *) NULL, false, | |
aad2c618 | 2364 | true, |
0634a431 | 2365 | (struct bfd_link_hash_entry **) &hds))) |
867d923d | 2366 | goto error_return; |
28a0c103 | 2367 | } |
ee174815 ILT |
2368 | hds->flags |= XCOFF_DESCRIPTOR; |
2369 | BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0 | |
2370 | && (h->flags & XCOFF_DESCRIPTOR) == 0); | |
2371 | hds->descriptor = h; | |
867d923d | 2372 | h->descriptor = hds; |
28a0c103 ILT |
2373 | } |
2374 | } | |
aadf04f7 SS |
2375 | } |
2376 | ||
583db7a8 ILT |
2377 | free (reloc_info[o->target_index].csects); |
2378 | reloc_info[o->target_index].csects = NULL; | |
aadf04f7 | 2379 | |
583db7a8 ILT |
2380 | /* Reset SEC_RELOC and the reloc_count, since the reloc |
2381 | information is now attached to the csects. */ | |
2382 | o->flags &=~ SEC_RELOC; | |
2383 | o->reloc_count = 0; | |
aadf04f7 SS |
2384 | |
2385 | /* If we are not keeping memory, free the reloc information. */ | |
2386 | if (! info->keep_memory | |
583db7a8 ILT |
2387 | && coff_section_data (abfd, o) != NULL |
2388 | && coff_section_data (abfd, o)->relocs != NULL | |
2389 | && ! coff_section_data (abfd, o)->keep_relocs) | |
aadf04f7 | 2390 | { |
583db7a8 ILT |
2391 | free (coff_section_data (abfd, o)->relocs); |
2392 | coff_section_data (abfd, o)->relocs = NULL; | |
aadf04f7 SS |
2393 | } |
2394 | } | |
28a0c103 ILT |
2395 | |
2396 | /* Free up the line numbers. FIXME: We could cache these | |
2397 | somewhere for the final link, to avoid reading them again. */ | |
583db7a8 | 2398 | if (reloc_info[o->target_index].linenos != NULL) |
28a0c103 | 2399 | { |
583db7a8 ILT |
2400 | free (reloc_info[o->target_index].linenos); |
2401 | reloc_info[o->target_index].linenos = NULL; | |
28a0c103 | 2402 | } |
aadf04f7 SS |
2403 | } |
2404 | ||
2405 | free (reloc_info); | |
2406 | ||
28a0c103 ILT |
2407 | obj_coff_keep_syms (abfd) = keep_syms; |
2408 | ||
2409 | return true; | |
2410 | ||
2411 | error_return: | |
2412 | if (reloc_info != NULL) | |
2413 | { | |
583db7a8 | 2414 | for (o = abfd->sections; o != NULL; o = o->next) |
28a0c103 | 2415 | { |
583db7a8 ILT |
2416 | if (reloc_info[o->target_index].csects != NULL) |
2417 | free (reloc_info[o->target_index].csects); | |
2418 | if (reloc_info[o->target_index].linenos != NULL) | |
2419 | free (reloc_info[o->target_index].linenos); | |
28a0c103 ILT |
2420 | } |
2421 | free (reloc_info); | |
2422 | } | |
2423 | obj_coff_keep_syms (abfd) = keep_syms; | |
2424 | return false; | |
2425 | } | |
2426 | ||
2427 | #undef N_TMASK | |
2428 | #undef N_BTSHFT | |
2429 | ||
2430 | /* This function is used to add symbols from a dynamic object to the | |
2431 | global symbol table. */ | |
2432 | ||
2433 | static boolean | |
2434 | xcoff_link_add_dynamic_symbols (abfd, info) | |
2435 | bfd *abfd; | |
2436 | struct bfd_link_info *info; | |
2437 | { | |
0634a431 | 2438 | asection *lsec; |
f5d65485 | 2439 | bfd_byte *buf; |
0634a431 ILT |
2440 | struct internal_ldhdr ldhdr; |
2441 | const char *strings; | |
2442 | struct external_ldsym *elsym, *elsymend; | |
28a0c103 ILT |
2443 | struct xcoff_import_file *n; |
2444 | const char *bname; | |
2445 | const char *mname; | |
2446 | const char *s; | |
2447 | unsigned int c; | |
2448 | struct xcoff_import_file **pp; | |
2449 | ||
2450 | /* We can only handle a dynamic object if we are generating an XCOFF | |
2451 | output file. */ | |
2452 | if (info->hash->creator != abfd->xvec) | |
2453 | { | |
2454 | (*_bfd_error_handler) | |
2455 | ("%s: XCOFF shared object when not producing XCOFF output", | |
2456 | bfd_get_filename (abfd)); | |
2457 | bfd_set_error (bfd_error_invalid_operation); | |
f5d65485 | 2458 | return false; |
28a0c103 ILT |
2459 | } |
2460 | ||
0634a431 ILT |
2461 | /* The symbols we use from a dynamic object are not the symbols in |
2462 | the normal symbol table, but, rather, the symbols in the export | |
2463 | table. If there is a global symbol in a dynamic object which is | |
2464 | not in the export table, the loader will not be able to find it, | |
2465 | so we don't want to find it either. Also, on AIX 4.1.3, shr.o in | |
2466 | libc.a has symbols in the export table which are not in the | |
2467 | symbol table. */ | |
2468 | ||
2469 | /* Read in the .loader section. FIXME: We should really use the | |
2470 | o_snloader field in the a.out header, rather than grabbing the | |
2471 | section by name. */ | |
2472 | lsec = bfd_get_section_by_name (abfd, ".loader"); | |
2473 | if (lsec == NULL) | |
2474 | { | |
2475 | (*_bfd_error_handler) | |
2476 | ("%s: dynamic object with no .loader section", | |
2477 | bfd_get_filename (abfd)); | |
2478 | bfd_set_error (bfd_error_no_symbols); | |
f5d65485 | 2479 | return false; |
0634a431 ILT |
2480 | } |
2481 | ||
f5d65485 ILT |
2482 | if (! xcoff_get_section_contents (abfd, lsec)) |
2483 | return false; | |
2484 | buf = coff_section_data (abfd, lsec)->contents; | |
0634a431 | 2485 | |
28a0c103 ILT |
2486 | /* Remove the sections from this object, so that they do not get |
2487 | included in the link. */ | |
2488 | abfd->sections = NULL; | |
2489 | ||
0634a431 ILT |
2490 | xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr); |
2491 | ||
2492 | strings = (char *) buf + ldhdr.l_stoff; | |
2493 | ||
2494 | elsym = (struct external_ldsym *) (buf + LDHDRSZ); | |
2495 | elsymend = elsym + ldhdr.l_nsyms; | |
2496 | BFD_ASSERT (sizeof (struct external_ldsym) == LDSYMSZ); | |
2497 | for (; elsym < elsymend; elsym++) | |
28a0c103 | 2498 | { |
0634a431 ILT |
2499 | struct internal_ldsym ldsym; |
2500 | char nambuf[SYMNMLEN + 1]; | |
2501 | const char *name; | |
2502 | struct xcoff_link_hash_entry *h; | |
28a0c103 | 2503 | |
0634a431 | 2504 | xcoff_swap_ldsym_in (abfd, elsym, &ldsym); |
28a0c103 | 2505 | |
0634a431 ILT |
2506 | /* We are only interested in exported symbols. */ |
2507 | if ((ldsym.l_smtype & L_EXPORT) == 0) | |
2508 | continue; | |
28a0c103 | 2509 | |
0634a431 ILT |
2510 | if (ldsym._l._l_l._l_zeroes == 0) |
2511 | name = strings + ldsym._l._l_l._l_offset; | |
2512 | else | |
2513 | { | |
2514 | memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); | |
2515 | nambuf[SYMNMLEN] = '\0'; | |
2516 | name = nambuf; | |
2517 | } | |
28a0c103 | 2518 | |
c3dffbd7 | 2519 | /* Normally we could not call xcoff_link_hash_lookup in an add |
417acf22 ILT |
2520 | symbols routine, since we might not be using an XCOFF hash |
2521 | table. However, we verified above that we are using an XCOFF | |
2522 | hash table. */ | |
2523 | ||
2524 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, | |
2525 | true, true); | |
2526 | if (h == NULL) | |
f5d65485 | 2527 | return false; |
417acf22 ILT |
2528 | |
2529 | h->flags |= XCOFF_DEF_DYNAMIC; | |
2530 | ||
2531 | /* If the symbol is undefined, and the BFD it was found in is | |
2532 | not a dynamic object, change the BFD to this dynamic object, | |
2533 | so that we can get the correct import file ID. */ | |
2534 | if ((h->root.type == bfd_link_hash_undefined | |
2535 | || h->root.type == bfd_link_hash_undefweak) | |
2536 | && (h->root.u.undef.abfd == NULL | |
2537 | || (h->root.u.undef.abfd->flags & DYNAMIC) == 0)) | |
2538 | h->root.u.undef.abfd = abfd; | |
2539 | ||
2540 | if (h->root.type == bfd_link_hash_new) | |
2541 | { | |
2542 | h->root.type = bfd_link_hash_undefined; | |
2543 | h->root.u.undef.abfd = abfd; | |
2544 | /* We do not want to add this to the undefined symbol list. */ | |
2545 | } | |
2546 | ||
2547 | if (h->smclas == XMC_UA | |
2548 | || h->root.type == bfd_link_hash_undefined | |
2549 | || h->root.type == bfd_link_hash_undefweak) | |
2550 | h->smclas = ldsym.l_smclas; | |
2551 | ||
2552 | /* Unless this is an XMC_XO symbol, we don't bother to actually | |
2553 | define it, since we don't have a section to put it in anyhow. | |
2554 | Instead, the relocation routines handle the DEF_DYNAMIC flag | |
2555 | correctly. */ | |
2556 | ||
2557 | if (h->smclas == XMC_XO | |
2558 | && (h->root.type == bfd_link_hash_undefined | |
2559 | || h->root.type == bfd_link_hash_undefweak)) | |
0634a431 | 2560 | { |
417acf22 ILT |
2561 | /* This symbol has an absolute value. */ |
2562 | h->root.type = bfd_link_hash_defined; | |
2563 | h->root.u.def.section = bfd_abs_section_ptr; | |
2564 | h->root.u.def.value = ldsym.l_value; | |
28a0c103 | 2565 | } |
e8c4696e ILT |
2566 | |
2567 | /* If this symbol defines a function descriptor, then it | |
2568 | implicitly defines the function code as well. */ | |
2569 | if (h->smclas == XMC_DS | |
2570 | || (h->smclas == XMC_XO && name[0] != '.')) | |
2571 | h->flags |= XCOFF_DESCRIPTOR; | |
2572 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
2573 | { | |
2574 | struct xcoff_link_hash_entry *hds; | |
2575 | ||
2576 | hds = h->descriptor; | |
2577 | if (hds == NULL) | |
2578 | { | |
2579 | char *dsnm; | |
2580 | ||
2581 | dsnm = bfd_malloc (strlen (name) + 2); | |
2582 | if (dsnm == NULL) | |
2583 | return false; | |
2584 | dsnm[0] = '.'; | |
2585 | strcpy (dsnm + 1, name); | |
2586 | hds = xcoff_link_hash_lookup (xcoff_hash_table (info), dsnm, | |
2587 | true, true, true); | |
2588 | free (dsnm); | |
2589 | if (hds == NULL) | |
2590 | return false; | |
2591 | ||
2592 | if (hds->root.type == bfd_link_hash_new) | |
2593 | { | |
2594 | hds->root.type = bfd_link_hash_undefined; | |
2595 | hds->root.u.undef.abfd = abfd; | |
2596 | /* We do not want to add this to the undefined | |
2597 | symbol list. */ | |
2598 | } | |
2599 | ||
2600 | hds->descriptor = h; | |
2601 | h->descriptor = hds; | |
2602 | } | |
2603 | ||
2604 | hds->flags |= XCOFF_DEF_DYNAMIC; | |
2605 | if (hds->smclas == XMC_UA) | |
2606 | hds->smclas = XMC_PR; | |
2607 | ||
2608 | /* An absolute symbol appears to actually define code, not a | |
2609 | function descriptor. This is how some math functions are | |
2610 | implemented on AIX 4.1. */ | |
2611 | if (h->smclas == XMC_XO | |
2612 | && (hds->root.type == bfd_link_hash_undefined | |
2613 | || hds->root.type == bfd_link_hash_undefweak)) | |
2614 | { | |
2615 | hds->smclas = XMC_XO; | |
2616 | hds->root.type = bfd_link_hash_defined; | |
2617 | hds->root.u.def.section = bfd_abs_section_ptr; | |
2618 | hds->root.u.def.value = ldsym.l_value; | |
2619 | } | |
2620 | } | |
0634a431 | 2621 | } |
28a0c103 | 2622 | |
f5d65485 | 2623 | if (buf != NULL && ! coff_section_data (abfd, lsec)->keep_contents) |
0634a431 | 2624 | { |
f5d65485 ILT |
2625 | free (coff_section_data (abfd, lsec)->contents); |
2626 | coff_section_data (abfd, lsec)->contents = NULL; | |
28a0c103 ILT |
2627 | } |
2628 | ||
2629 | /* Record this file in the import files. */ | |
2630 | ||
2631 | n = ((struct xcoff_import_file *) | |
2632 | bfd_alloc (abfd, sizeof (struct xcoff_import_file))); | |
2633 | if (n == NULL) | |
f5d65485 | 2634 | return false; |
28a0c103 ILT |
2635 | n->next = NULL; |
2636 | ||
2637 | /* For some reason, the path entry in the import file list for a | |
2638 | shared object appears to always be empty. The file name is the | |
2639 | base name. */ | |
2640 | n->path = ""; | |
2641 | if (abfd->my_archive == NULL) | |
2642 | { | |
2643 | bname = bfd_get_filename (abfd); | |
2644 | mname = ""; | |
2645 | } | |
2646 | else | |
2647 | { | |
2648 | bname = bfd_get_filename (abfd->my_archive); | |
2649 | mname = bfd_get_filename (abfd); | |
2650 | } | |
2651 | s = strrchr (bname, '/'); | |
2652 | if (s != NULL) | |
2653 | bname = s + 1; | |
2654 | n->file = bname; | |
2655 | n->member = mname; | |
2656 | ||
2657 | /* We start c at 1 because the first import file number is reserved | |
2658 | for LIBPATH. */ | |
2659 | for (pp = &xcoff_hash_table (info)->imports, c = 1; | |
2660 | *pp != NULL; | |
2661 | pp = &(*pp)->next, ++c) | |
2662 | ; | |
2663 | *pp = n; | |
2664 | ||
2665 | xcoff_data (abfd)->import_file_id = c; | |
2666 | ||
2667 | return true; | |
2668 | } | |
2669 | \f | |
2670 | /* Routines that are called after all the input files have been | |
2671 | handled, but before the sections are laid out in memory. */ | |
2672 | ||
e6080520 ILT |
2673 | /* Mark a symbol as not being garbage, including the section in which |
2674 | it is defined. */ | |
2675 | ||
2676 | static INLINE boolean | |
2677 | xcoff_mark_symbol (info, h) | |
2678 | struct bfd_link_info *info; | |
2679 | struct xcoff_link_hash_entry *h; | |
2680 | { | |
2681 | if ((h->flags & XCOFF_MARK) != 0) | |
2682 | return true; | |
2683 | ||
2684 | h->flags |= XCOFF_MARK; | |
2685 | if (h->root.type == bfd_link_hash_defined | |
2686 | || h->root.type == bfd_link_hash_defweak) | |
2687 | { | |
2688 | asection *hsec; | |
2689 | ||
2690 | hsec = h->root.u.def.section; | |
2691 | if ((hsec->flags & SEC_MARK) == 0) | |
2692 | { | |
2693 | if (! xcoff_mark (info, hsec)) | |
2694 | return false; | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | if (h->toc_section != NULL | |
2699 | && (h->toc_section->flags & SEC_MARK) == 0) | |
2700 | { | |
2701 | if (! xcoff_mark (info, h->toc_section)) | |
2702 | return false; | |
2703 | } | |
2704 | ||
2705 | return true; | |
2706 | } | |
2707 | ||
2708 | /* The mark phase of garbage collection. For a given section, mark | |
2709 | it, and all the sections which define symbols to which it refers. | |
2710 | Because this function needs to look at the relocs, we also count | |
2711 | the number of relocs which need to be copied into the .loader | |
2712 | section. */ | |
2713 | ||
2714 | static boolean | |
2715 | xcoff_mark (info, sec) | |
2716 | struct bfd_link_info *info; | |
2717 | asection *sec; | |
2718 | { | |
2719 | if ((sec->flags & SEC_MARK) != 0) | |
2720 | return true; | |
2721 | ||
2722 | sec->flags |= SEC_MARK; | |
2723 | ||
2724 | if (sec->owner->xvec == info->hash->creator | |
2725 | && coff_section_data (sec->owner, sec) != NULL | |
2726 | && xcoff_section_data (sec->owner, sec) != NULL) | |
2727 | { | |
2728 | register struct xcoff_link_hash_entry **hp, **hpend; | |
2729 | struct internal_reloc *rel, *relend; | |
2730 | ||
2731 | /* Mark all the symbols in this section. */ | |
2732 | ||
2733 | hp = (obj_xcoff_sym_hashes (sec->owner) | |
2734 | + xcoff_section_data (sec->owner, sec)->first_symndx); | |
2735 | hpend = (obj_xcoff_sym_hashes (sec->owner) | |
2736 | + xcoff_section_data (sec->owner, sec)->last_symndx); | |
2737 | for (; hp < hpend; hp++) | |
2738 | { | |
2739 | register struct xcoff_link_hash_entry *h; | |
2740 | ||
2741 | h = *hp; | |
2742 | if (h != NULL | |
2743 | && (h->flags & XCOFF_MARK) == 0) | |
2744 | { | |
2745 | if (! xcoff_mark_symbol (info, h)) | |
2746 | return false; | |
2747 | } | |
2748 | } | |
2749 | ||
2750 | /* Look through the section relocs. */ | |
2751 | ||
2752 | if ((sec->flags & SEC_RELOC) != 0 | |
2753 | && sec->reloc_count > 0) | |
2754 | { | |
2755 | rel = xcoff_read_internal_relocs (sec->owner, sec, true, | |
2756 | (bfd_byte *) NULL, false, | |
2757 | (struct internal_reloc *) NULL); | |
2758 | if (rel == NULL) | |
2759 | return false; | |
2760 | relend = rel + sec->reloc_count; | |
2761 | for (; rel < relend; rel++) | |
2762 | { | |
2763 | asection *rsec; | |
2764 | struct xcoff_link_hash_entry *h; | |
2765 | ||
2766 | if ((unsigned int) rel->r_symndx | |
2767 | > obj_raw_syment_count (sec->owner)) | |
2768 | continue; | |
2769 | ||
2770 | h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx]; | |
2771 | if (h != NULL | |
2772 | && (h->flags & XCOFF_MARK) == 0) | |
2773 | { | |
2774 | if (! xcoff_mark_symbol (info, h)) | |
2775 | return false; | |
2776 | } | |
2777 | ||
2778 | rsec = xcoff_data (sec->owner)->csects[rel->r_symndx]; | |
2779 | if (rsec != NULL | |
2780 | && (rsec->flags & SEC_MARK) == 0) | |
2781 | { | |
2782 | if (! xcoff_mark (info, rsec)) | |
2783 | return false; | |
2784 | } | |
2785 | ||
2786 | /* See if this reloc needs to be copied into the .loader | |
2787 | section. */ | |
2788 | switch (rel->r_type) | |
2789 | { | |
2790 | default: | |
2791 | if (h == NULL | |
2792 | || h->root.type == bfd_link_hash_defined | |
2793 | || h->root.type == bfd_link_hash_defweak | |
2794 | || h->root.type == bfd_link_hash_common | |
2795 | || ((h->flags & XCOFF_CALLED) != 0 | |
e6080520 ILT |
2796 | && (h->root.type == bfd_link_hash_undefined |
2797 | || h->root.type == bfd_link_hash_undefweak) | |
0634a431 ILT |
2798 | && h->root.root.string[0] == '.' |
2799 | && h->descriptor != NULL | |
2800 | && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0 | |
c3dffbd7 ILT |
2801 | || ((h->descriptor->flags & XCOFF_IMPORT) != 0 |
2802 | && (h->descriptor->flags | |
2803 | & XCOFF_DEF_REGULAR) == 0)))) | |
e6080520 ILT |
2804 | break; |
2805 | /* Fall through. */ | |
2806 | case R_POS: | |
2807 | case R_NEG: | |
2808 | case R_RL: | |
2809 | case R_RLA: | |
2810 | ++xcoff_hash_table (info)->ldrel_count; | |
2811 | if (h != NULL) | |
2812 | h->flags |= XCOFF_LDREL; | |
2813 | break; | |
2814 | case R_TOC: | |
2815 | case R_GL: | |
2816 | case R_TCL: | |
2817 | case R_TRL: | |
2818 | case R_TRLA: | |
2819 | /* We should never need a .loader reloc for a TOC | |
2820 | relative reloc. */ | |
2821 | break; | |
2822 | } | |
2823 | } | |
2824 | ||
2825 | if (! info->keep_memory | |
2826 | && coff_section_data (sec->owner, sec) != NULL | |
2827 | && coff_section_data (sec->owner, sec)->relocs != NULL | |
2828 | && ! coff_section_data (sec->owner, sec)->keep_relocs) | |
2829 | { | |
2830 | free (coff_section_data (sec->owner, sec)->relocs); | |
2831 | coff_section_data (sec->owner, sec)->relocs = NULL; | |
2832 | } | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | return true; | |
2837 | } | |
2838 | ||
2839 | /* The sweep phase of garbage collection. Remove all garbage | |
2840 | sections. */ | |
2841 | ||
2842 | static void | |
2843 | xcoff_sweep (info) | |
2844 | struct bfd_link_info *info; | |
2845 | { | |
2846 | bfd *sub; | |
2847 | ||
2848 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
2849 | { | |
2850 | asection *o; | |
2851 | ||
2852 | for (o = sub->sections; o != NULL; o = o->next) | |
2853 | { | |
2854 | if ((o->flags & SEC_MARK) == 0) | |
2855 | { | |
2856 | /* Keep all sections from non-XCOFF input files. Keep | |
2857 | special sections. Keep .debug sections for the | |
2858 | moment. */ | |
2859 | if (sub->xvec != info->hash->creator | |
2860 | || o == xcoff_hash_table (info)->debug_section | |
2861 | || o == xcoff_hash_table (info)->loader_section | |
2862 | || o == xcoff_hash_table (info)->linkage_section | |
2863 | || o == xcoff_hash_table (info)->toc_section | |
ee174815 | 2864 | || o == xcoff_hash_table (info)->descriptor_section |
e6080520 ILT |
2865 | || strcmp (o->name, ".debug") == 0) |
2866 | o->flags |= SEC_MARK; | |
2867 | else | |
2868 | { | |
2869 | o->_raw_size = 0; | |
2870 | o->reloc_count = 0; | |
2871 | o->lineno_count = 0; | |
2872 | } | |
2873 | } | |
2874 | } | |
2875 | } | |
2876 | } | |
2877 | ||
2d7de17d ILT |
2878 | /* Record the number of elements in a set. This is used to output the |
2879 | correct csect length. */ | |
2880 | ||
2881 | boolean | |
2882 | bfd_xcoff_link_record_set (output_bfd, info, harg, size) | |
2883 | bfd *output_bfd; | |
2884 | struct bfd_link_info *info; | |
2885 | struct bfd_link_hash_entry *harg; | |
2886 | bfd_size_type size; | |
2887 | { | |
2888 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
2889 | struct xcoff_link_size_list *n; | |
2890 | ||
b2193cc5 ILT |
2891 | if (! XCOFF_XVECP (output_bfd->xvec)) |
2892 | return true; | |
2893 | ||
2d7de17d ILT |
2894 | /* This will hardly ever be called. I don't want to burn four bytes |
2895 | per global symbol, so instead the size is kept on a linked list | |
2896 | attached to the hash table. */ | |
2897 | ||
2898 | n = ((struct xcoff_link_size_list *) | |
2899 | bfd_alloc (output_bfd, sizeof (struct xcoff_link_size_list))); | |
2900 | if (n == NULL) | |
a9713b91 | 2901 | return false; |
2d7de17d ILT |
2902 | n->next = xcoff_hash_table (info)->size_list; |
2903 | n->h = h; | |
2904 | n->size = size; | |
2905 | xcoff_hash_table (info)->size_list = n; | |
2906 | ||
2907 | h->flags |= XCOFF_HAS_SIZE; | |
2908 | ||
2909 | return true; | |
2910 | } | |
2911 | ||
28a0c103 ILT |
2912 | /* Import a symbol. */ |
2913 | ||
2914 | boolean | |
2915 | bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, | |
2916 | impmember) | |
2917 | bfd *output_bfd; | |
2918 | struct bfd_link_info *info; | |
2919 | struct bfd_link_hash_entry *harg; | |
2920 | bfd_vma val; | |
2921 | const char *imppath; | |
2922 | const char *impfile; | |
2923 | const char *impmember; | |
2924 | { | |
2925 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
2926 | ||
b2193cc5 ILT |
2927 | if (! XCOFF_XVECP (output_bfd->xvec)) |
2928 | return true; | |
2929 | ||
28a0c103 ILT |
2930 | h->flags |= XCOFF_IMPORT; |
2931 | ||
2932 | if (val != (bfd_vma) -1) | |
2933 | { | |
417acf22 ILT |
2934 | if (h->root.type == bfd_link_hash_defined |
2935 | && (! bfd_is_abs_section (h->root.u.def.section) | |
2936 | || h->root.u.def.value != val)) | |
28a0c103 ILT |
2937 | { |
2938 | if (! ((*info->callbacks->multiple_definition) | |
2939 | (info, h->root.root.string, h->root.u.def.section->owner, | |
2940 | h->root.u.def.section, h->root.u.def.value, | |
2941 | output_bfd, bfd_abs_section_ptr, val))) | |
2942 | return false; | |
2943 | } | |
2944 | ||
2945 | h->root.type = bfd_link_hash_defined; | |
2946 | h->root.u.def.section = bfd_abs_section_ptr; | |
2947 | h->root.u.def.value = val; | |
2948 | } | |
2949 | ||
e8c4696e ILT |
2950 | /* We overload the ldindx field to hold the l_ifile value for this |
2951 | symbol. */ | |
2952 | BFD_ASSERT (h->ldsym == NULL); | |
2953 | BFD_ASSERT ((h->flags & XCOFF_BUILT_LDSYM) == 0); | |
28a0c103 | 2954 | if (imppath == NULL) |
e8c4696e | 2955 | h->ldindx = -1; |
28a0c103 ILT |
2956 | else |
2957 | { | |
2958 | unsigned int c; | |
2959 | struct xcoff_import_file **pp; | |
2960 | ||
2961 | /* We start c at 1 because the first entry in the import list is | |
2962 | reserved for the library search path. */ | |
2963 | for (pp = &xcoff_hash_table (info)->imports, c = 1; | |
2964 | *pp != NULL; | |
2965 | pp = &(*pp)->next, ++c) | |
2966 | { | |
2967 | if (strcmp ((*pp)->path, imppath) == 0 | |
2968 | && strcmp ((*pp)->file, impfile) == 0 | |
2969 | && strcmp ((*pp)->member, impmember) == 0) | |
2970 | break; | |
2971 | } | |
2972 | ||
2973 | if (*pp == NULL) | |
2974 | { | |
2975 | struct xcoff_import_file *n; | |
2976 | ||
2977 | n = ((struct xcoff_import_file *) | |
2978 | bfd_alloc (output_bfd, sizeof (struct xcoff_import_file))); | |
2979 | if (n == NULL) | |
a9713b91 | 2980 | return false; |
28a0c103 ILT |
2981 | n->next = NULL; |
2982 | n->path = imppath; | |
2983 | n->file = impfile; | |
2984 | n->member = impmember; | |
2985 | *pp = n; | |
2986 | } | |
2987 | ||
e8c4696e | 2988 | h->ldindx = c; |
28a0c103 ILT |
2989 | } |
2990 | ||
2991 | return true; | |
2992 | } | |
2993 | ||
2994 | /* Export a symbol. */ | |
2995 | ||
2996 | boolean | |
2997 | bfd_xcoff_export_symbol (output_bfd, info, harg, syscall) | |
2998 | bfd *output_bfd; | |
2999 | struct bfd_link_info *info; | |
3000 | struct bfd_link_hash_entry *harg; | |
3001 | boolean syscall; | |
3002 | { | |
3003 | struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; | |
3004 | ||
b2193cc5 ILT |
3005 | if (! XCOFF_XVECP (output_bfd->xvec)) |
3006 | return true; | |
3007 | ||
28a0c103 ILT |
3008 | h->flags |= XCOFF_EXPORT; |
3009 | ||
3010 | /* FIXME: I'm not at all sure what syscall is supposed to mean, so | |
3011 | I'm just going to ignore it until somebody explains it. */ | |
3012 | ||
ee174815 ILT |
3013 | /* See if this is a function descriptor. It may be one even though |
3014 | it is not so marked. */ | |
3015 | if ((h->flags & XCOFF_DESCRIPTOR) == 0 | |
3016 | && h->root.root.string[0] != '.') | |
3017 | { | |
3018 | char *fnname; | |
3019 | struct xcoff_link_hash_entry *hfn; | |
3020 | ||
58142f10 | 3021 | fnname = (char *) bfd_malloc (strlen (h->root.root.string) + 2); |
ee174815 | 3022 | if (fnname == NULL) |
58142f10 | 3023 | return false; |
ee174815 ILT |
3024 | fnname[0] = '.'; |
3025 | strcpy (fnname + 1, h->root.root.string); | |
3026 | hfn = xcoff_link_hash_lookup (xcoff_hash_table (info), | |
3027 | fnname, false, false, true); | |
3028 | free (fnname); | |
3029 | if (hfn != NULL | |
3030 | && hfn->smclas == XMC_PR | |
3031 | && (hfn->root.type == bfd_link_hash_defined | |
3032 | || hfn->root.type == bfd_link_hash_defweak)) | |
3033 | { | |
3034 | h->flags |= XCOFF_DESCRIPTOR; | |
3035 | h->descriptor = hfn; | |
3036 | hfn->descriptor = h; | |
3037 | } | |
3038 | } | |
3039 | ||
e6080520 ILT |
3040 | /* Make sure we don't garbage collect this symbol. */ |
3041 | if (! xcoff_mark_symbol (info, h)) | |
3042 | return false; | |
3043 | ||
ee174815 ILT |
3044 | /* If this is a function descriptor, make sure we don't garbage |
3045 | collect the associated function code. We normally don't have to | |
3046 | worry about this, because the descriptor will be attached to a | |
3047 | section with relocs, but if we are creating the descriptor | |
3048 | ourselves those relocs will not be visible to the mark code. */ | |
3049 | if ((h->flags & XCOFF_DESCRIPTOR) != 0) | |
3050 | { | |
3051 | if (! xcoff_mark_symbol (info, h->descriptor)) | |
3052 | return false; | |
3053 | } | |
3054 | ||
28a0c103 ILT |
3055 | return true; |
3056 | } | |
3057 | ||
2d7de17d ILT |
3058 | /* Count a reloc against a symbol. This is called for relocs |
3059 | generated by the linker script, typically for global constructors | |
3060 | and destructors. */ | |
3061 | ||
3062 | boolean | |
3063 | bfd_xcoff_link_count_reloc (output_bfd, info, name) | |
3064 | bfd *output_bfd; | |
3065 | struct bfd_link_info *info; | |
3066 | const char *name; | |
3067 | { | |
3068 | struct xcoff_link_hash_entry *h; | |
3069 | ||
b2193cc5 ILT |
3070 | if (! XCOFF_XVECP (output_bfd->xvec)) |
3071 | return true; | |
3072 | ||
c3dffbd7 ILT |
3073 | h = ((struct xcoff_link_hash_entry *) |
3074 | bfd_wrapped_link_hash_lookup (output_bfd, info, name, false, false, | |
3075 | false)); | |
2d7de17d ILT |
3076 | if (h == NULL) |
3077 | { | |
3078 | (*_bfd_error_handler) ("%s: no such symbol", name); | |
3079 | bfd_set_error (bfd_error_no_symbols); | |
3080 | return false; | |
3081 | } | |
3082 | ||
3083 | h->flags |= XCOFF_REF_REGULAR | XCOFF_LDREL; | |
3084 | ++xcoff_hash_table (info)->ldrel_count; | |
3085 | ||
3086 | /* Mark the symbol to avoid garbage collection. */ | |
e6080520 ILT |
3087 | if (! xcoff_mark_symbol (info, h)) |
3088 | return false; | |
2d7de17d ILT |
3089 | |
3090 | return true; | |
3091 | } | |
3092 | ||
3093 | /* This function is called for each symbol to which the linker script | |
3094 | assigns a value. */ | |
3095 | ||
3096 | boolean | |
3097 | bfd_xcoff_record_link_assignment (output_bfd, info, name) | |
3098 | bfd *output_bfd; | |
3099 | struct bfd_link_info *info; | |
3100 | const char *name; | |
3101 | { | |
3102 | struct xcoff_link_hash_entry *h; | |
3103 | ||
b2193cc5 ILT |
3104 | if (! XCOFF_XVECP (output_bfd->xvec)) |
3105 | return true; | |
3106 | ||
2d7de17d ILT |
3107 | h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, true, |
3108 | false); | |
3109 | if (h == NULL) | |
3110 | return false; | |
3111 | ||
3112 | h->flags |= XCOFF_DEF_REGULAR; | |
3113 | ||
3114 | return true; | |
3115 | } | |
3116 | ||
28a0c103 ILT |
3117 | /* This structure is used to pass information through |
3118 | xcoff_link_hash_traverse. */ | |
3119 | ||
3120 | struct xcoff_loader_info | |
3121 | { | |
3122 | /* Set if a problem occurred. */ | |
3123 | boolean failed; | |
3124 | /* Output BFD. */ | |
3125 | bfd *output_bfd; | |
3126 | /* Link information structure. */ | |
3127 | struct bfd_link_info *info; | |
c9746fb6 ILT |
3128 | /* Whether all defined symbols should be exported. */ |
3129 | boolean export_defineds; | |
28a0c103 ILT |
3130 | /* Number of ldsym structures. */ |
3131 | size_t ldsym_count; | |
3132 | /* Size of string table. */ | |
3133 | size_t string_size; | |
3134 | /* String table. */ | |
3135 | bfd_byte *strings; | |
3136 | /* Allocated size of string table. */ | |
3137 | size_t string_alc; | |
3138 | }; | |
3139 | ||
3140 | /* Build the .loader section. This is called by the XCOFF linker | |
3141 | emulation before_allocation routine. We must set the size of the | |
3142 | .loader section before the linker lays out the output file. | |
3143 | LIBPATH is the library path to search for shared objects; this is | |
3144 | normally built from the -L arguments passed to the linker. ENTRY | |
c9746fb6 ILT |
3145 | is the name of the entry point symbol (the -e linker option). |
3146 | FILE_ALIGN is the alignment to use for sections within the file | |
3147 | (the -H linker option). MAXSTACK is the maximum stack size (the | |
3148 | -bmaxstack linker option). MAXDATA is the maximum data size (the | |
3149 | -bmaxdata linker option). GC is whether to do garbage collection | |
3150 | (the -bgc linker option). MODTYPE is the module type (the | |
3151 | -bmodtype linker option). TEXTRO is whether the text section must | |
3152 | be read only (the -btextro linker option). EXPORT_DEFINEDS is | |
3153 | whether all defined symbols should be exported (the -unix linker | |
3154 | option). SPECIAL_SECTIONS is set by this routine to csects with | |
3155 | magic names like _end. */ | |
28a0c103 ILT |
3156 | |
3157 | boolean | |
3158 | bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, | |
3159 | file_align, maxstack, maxdata, gc, | |
c9746fb6 ILT |
3160 | modtype, textro, export_defineds, |
3161 | special_sections) | |
28a0c103 ILT |
3162 | bfd *output_bfd; |
3163 | struct bfd_link_info *info; | |
3164 | const char *libpath; | |
3165 | const char *entry; | |
3166 | unsigned long file_align; | |
3167 | unsigned long maxstack; | |
3168 | unsigned long maxdata; | |
3169 | boolean gc; | |
3170 | int modtype; | |
3171 | boolean textro; | |
c9746fb6 | 3172 | boolean export_defineds; |
ee174815 | 3173 | asection **special_sections; |
28a0c103 ILT |
3174 | { |
3175 | struct xcoff_link_hash_entry *hentry; | |
3176 | asection *lsec; | |
3177 | struct xcoff_loader_info ldinfo; | |
ee174815 | 3178 | int i; |
28a0c103 ILT |
3179 | size_t impsize, impcount; |
3180 | struct xcoff_import_file *fl; | |
3181 | struct internal_ldhdr *ldhdr; | |
9c234e29 | 3182 | bfd_size_type stoff; |
28a0c103 ILT |
3183 | register char *out; |
3184 | asection *sec; | |
3185 | bfd *sub; | |
3186 | struct bfd_strtab_hash *debug_strtab; | |
3187 | bfd_byte *debug_contents = NULL; | |
3188 | ||
b2193cc5 | 3189 | if (! XCOFF_XVECP (output_bfd->xvec)) |
83dcdc61 ILT |
3190 | { |
3191 | for (i = 0; i < 6; i++) | |
3192 | special_sections[i] = NULL; | |
3193 | return true; | |
3194 | } | |
b2193cc5 | 3195 | |
28a0c103 ILT |
3196 | ldinfo.failed = false; |
3197 | ldinfo.output_bfd = output_bfd; | |
3198 | ldinfo.info = info; | |
c9746fb6 | 3199 | ldinfo.export_defineds = export_defineds; |
28a0c103 ILT |
3200 | ldinfo.ldsym_count = 0; |
3201 | ldinfo.string_size = 0; | |
3202 | ldinfo.strings = NULL; | |
3203 | ldinfo.string_alc = 0; | |
3204 | ||
3205 | xcoff_data (output_bfd)->maxstack = maxstack; | |
3206 | xcoff_data (output_bfd)->maxdata = maxdata; | |
3207 | xcoff_data (output_bfd)->modtype = modtype; | |
3208 | ||
3209 | xcoff_hash_table (info)->file_align = file_align; | |
3210 | xcoff_hash_table (info)->textro = textro; | |
3211 | ||
3212 | hentry = xcoff_link_hash_lookup (xcoff_hash_table (info), entry, | |
3213 | false, false, true); | |
3214 | if (hentry != NULL) | |
c3dffbd7 | 3215 | hentry->flags |= XCOFF_ENTRY; |
28a0c103 ILT |
3216 | |
3217 | /* Garbage collect unused sections. */ | |
3218 | if (info->relocateable | |
3219 | || ! gc | |
3220 | || hentry == NULL | |
3221 | || (hentry->root.type != bfd_link_hash_defined | |
3222 | && hentry->root.type != bfd_link_hash_defweak)) | |
f78195df ILT |
3223 | { |
3224 | gc = false; | |
3225 | xcoff_hash_table (info)->gc = false; | |
867d923d ILT |
3226 | |
3227 | /* We still need to call xcoff_mark, in order to set ldrel_count | |
3228 | correctly. */ | |
3229 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
3230 | { | |
3231 | asection *o; | |
3232 | ||
3233 | for (o = sub->sections; o != NULL; o = o->next) | |
3234 | { | |
3235 | if ((o->flags & SEC_MARK) == 0) | |
3236 | { | |
3237 | if (! xcoff_mark (info, o)) | |
3238 | goto error_return; | |
3239 | } | |
3240 | } | |
3241 | } | |
f78195df | 3242 | } |
28a0c103 ILT |
3243 | else |
3244 | { | |
3245 | if (! xcoff_mark (info, hentry->root.u.def.section)) | |
3246 | goto error_return; | |
3247 | xcoff_sweep (info); | |
3248 | xcoff_hash_table (info)->gc = true; | |
3249 | } | |
3250 | ||
ee174815 ILT |
3251 | /* Return special sections to the caller. */ |
3252 | for (i = 0; i < 6; i++) | |
3253 | { | |
3254 | asection *sec; | |
3255 | ||
3256 | sec = xcoff_hash_table (info)->special_sections[i]; | |
3257 | if (sec != NULL | |
3258 | && gc | |
3259 | && (sec->flags & SEC_MARK) == 0) | |
3260 | sec = NULL; | |
3261 | special_sections[i] = sec; | |
3262 | } | |
3263 | ||
28a0c103 ILT |
3264 | if (info->input_bfds == NULL) |
3265 | { | |
3266 | /* I'm not sure what to do in this bizarre case. */ | |
3267 | return true; | |
3268 | } | |
3269 | ||
3270 | xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_build_ldsyms, | |
3271 | (PTR) &ldinfo); | |
3272 | if (ldinfo.failed) | |
3273 | goto error_return; | |
3274 | ||
3275 | /* Work out the size of the import file names. Each import file ID | |
3276 | consists of three null terminated strings: the path, the file | |
3277 | name, and the archive member name. The first entry in the list | |
3278 | of names is the path to use to find objects, which the linker has | |
3279 | passed in as the libpath argument. For some reason, the path | |
3280 | entry in the other import file names appears to always be empty. */ | |
3281 | impsize = strlen (libpath) + 3; | |
3282 | impcount = 1; | |
3283 | for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next) | |
3284 | { | |
3285 | ++impcount; | |
3286 | impsize += (strlen (fl->path) | |
3287 | + strlen (fl->file) | |
3288 | + strlen (fl->member) | |
3289 | + 3); | |
3290 | } | |
3291 | ||
3292 | /* Set up the .loader section header. */ | |
3293 | ldhdr = &xcoff_hash_table (info)->ldhdr; | |
3294 | ldhdr->l_version = 1; | |
3295 | ldhdr->l_nsyms = ldinfo.ldsym_count; | |
3296 | ldhdr->l_nreloc = xcoff_hash_table (info)->ldrel_count; | |
3297 | ldhdr->l_istlen = impsize; | |
3298 | ldhdr->l_nimpid = impcount; | |
3299 | ldhdr->l_impoff = (LDHDRSZ | |
3300 | + ldhdr->l_nsyms * LDSYMSZ | |
3301 | + ldhdr->l_nreloc * LDRELSZ); | |
3302 | ldhdr->l_stlen = ldinfo.string_size; | |
9c234e29 ILT |
3303 | stoff = ldhdr->l_impoff + impsize; |
3304 | if (ldinfo.string_size == 0) | |
3305 | ldhdr->l_stoff = 0; | |
3306 | else | |
3307 | ldhdr->l_stoff = stoff; | |
28a0c103 ILT |
3308 | |
3309 | /* We now know the final size of the .loader section. Allocate | |
3310 | space for it. */ | |
3311 | lsec = xcoff_hash_table (info)->loader_section; | |
9c234e29 | 3312 | lsec->_raw_size = stoff + ldhdr->l_stlen; |
28a0c103 ILT |
3313 | lsec->contents = (bfd_byte *) bfd_zalloc (output_bfd, lsec->_raw_size); |
3314 | if (lsec->contents == NULL) | |
a9713b91 | 3315 | goto error_return; |
28a0c103 ILT |
3316 | |
3317 | /* Set up the header. */ | |
3318 | xcoff_swap_ldhdr_out (output_bfd, ldhdr, | |
3319 | (struct external_ldhdr *) lsec->contents); | |
3320 | ||
3321 | /* Set up the import file names. */ | |
3322 | out = (char *) lsec->contents + ldhdr->l_impoff; | |
3323 | strcpy (out, libpath); | |
3324 | out += strlen (libpath) + 1; | |
3325 | *out++ = '\0'; | |
3326 | *out++ = '\0'; | |
3327 | for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next) | |
3328 | { | |
3329 | register const char *s; | |
3330 | ||
3331 | s = fl->path; | |
3332 | while ((*out++ = *s++) != '\0') | |
3333 | ; | |
3334 | s = fl->file; | |
3335 | while ((*out++ = *s++) != '\0') | |
3336 | ; | |
3337 | s = fl->member; | |
3338 | while ((*out++ = *s++) != '\0') | |
3339 | ; | |
3340 | } | |
3341 | ||
9c234e29 | 3342 | BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents) == stoff); |
28a0c103 ILT |
3343 | |
3344 | /* Set up the symbol string table. */ | |
3345 | if (ldinfo.string_size > 0) | |
aadf04f7 | 3346 | { |
28a0c103 ILT |
3347 | memcpy (out, ldinfo.strings, ldinfo.string_size); |
3348 | free (ldinfo.strings); | |
3349 | ldinfo.strings = NULL; | |
3350 | } | |
3351 | ||
3352 | /* We can't set up the symbol table or the relocs yet, because we | |
3353 | don't yet know the final position of the various sections. The | |
3354 | .loader symbols are written out when the corresponding normal | |
3355 | symbols are written out in xcoff_link_input_bfd or | |
3356 | xcoff_write_global_symbol. The .loader relocs are written out | |
3357 | when the corresponding normal relocs are handled in | |
3358 | xcoff_link_input_bfd. */ | |
3359 | ||
ee174815 | 3360 | /* Allocate space for the magic sections. */ |
28a0c103 ILT |
3361 | sec = xcoff_hash_table (info)->linkage_section; |
3362 | if (sec->_raw_size > 0) | |
3363 | { | |
3364 | sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); | |
3365 | if (sec->contents == NULL) | |
a9713b91 | 3366 | goto error_return; |
28a0c103 ILT |
3367 | } |
3368 | sec = xcoff_hash_table (info)->toc_section; | |
ee174815 ILT |
3369 | if (sec->_raw_size > 0) |
3370 | { | |
3371 | sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); | |
3372 | if (sec->contents == NULL) | |
a9713b91 | 3373 | goto error_return; |
ee174815 ILT |
3374 | } |
3375 | sec = xcoff_hash_table (info)->descriptor_section; | |
28a0c103 ILT |
3376 | if (sec->_raw_size > 0) |
3377 | { | |
3378 | sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); | |
3379 | if (sec->contents == NULL) | |
a9713b91 | 3380 | goto error_return; |
28a0c103 ILT |
3381 | } |
3382 | ||
3383 | /* Now that we've done garbage collection, figure out the contents | |
3384 | of the .debug section. */ | |
3385 | debug_strtab = xcoff_hash_table (info)->debug_strtab; | |
3386 | ||
3387 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
3388 | { | |
3389 | asection *subdeb; | |
3390 | bfd_size_type symcount; | |
3391 | unsigned long *debug_index; | |
3392 | asection **csectpp; | |
3393 | bfd_byte *esym, *esymend; | |
3394 | bfd_size_type symesz; | |
3395 | ||
3396 | if (sub->xvec != info->hash->creator) | |
3397 | continue; | |
3398 | subdeb = bfd_get_section_by_name (sub, ".debug"); | |
3399 | if (subdeb == NULL || subdeb->_raw_size == 0) | |
3400 | continue; | |
3401 | ||
3402 | if (info->strip == strip_all | |
3403 | || info->strip == strip_debugger | |
3404 | || info->discard == discard_all) | |
3405 | { | |
3406 | subdeb->_raw_size = 0; | |
3407 | continue; | |
3408 | } | |
3409 | ||
3410 | if (! _bfd_coff_get_external_symbols (sub)) | |
3411 | goto error_return; | |
3412 | ||
3413 | symcount = obj_raw_syment_count (sub); | |
3414 | debug_index = ((unsigned long *) | |
3415 | bfd_zalloc (sub, symcount * sizeof (unsigned long))); | |
3416 | if (debug_index == NULL) | |
a9713b91 | 3417 | goto error_return; |
28a0c103 ILT |
3418 | xcoff_data (sub)->debug_indices = debug_index; |
3419 | ||
3420 | /* Grab the contents of the .debug section. We use malloc and | |
724a4c0d | 3421 | copy the names into the debug stringtab, rather than |
28a0c103 ILT |
3422 | bfd_alloc, because I expect that, when linking many files |
3423 | together, many of the strings will be the same. Storing the | |
3424 | strings in the hash table should save space in this case. */ | |
58142f10 | 3425 | debug_contents = (bfd_byte *) bfd_malloc (subdeb->_raw_size); |
28a0c103 | 3426 | if (debug_contents == NULL) |
58142f10 | 3427 | goto error_return; |
28a0c103 ILT |
3428 | if (! bfd_get_section_contents (sub, subdeb, (PTR) debug_contents, |
3429 | (file_ptr) 0, subdeb->_raw_size)) | |
3430 | goto error_return; | |
3431 | ||
3432 | csectpp = xcoff_data (sub)->csects; | |
3433 | ||
3434 | symesz = bfd_coff_symesz (sub); | |
3435 | esym = (bfd_byte *) obj_coff_external_syms (sub); | |
3436 | esymend = esym + symcount * symesz; | |
3437 | while (esym < esymend) | |
3438 | { | |
3439 | struct internal_syment sym; | |
3440 | ||
3441 | bfd_coff_swap_sym_in (sub, (PTR) esym, (PTR) &sym); | |
3442 | ||
3443 | *debug_index = (unsigned long) -1; | |
3444 | ||
3445 | if (sym._n._n_n._n_zeroes == 0 | |
3446 | && *csectpp != NULL | |
3447 | && (! gc | |
3448 | || ((*csectpp)->flags & SEC_MARK) != 0 | |
3449 | || *csectpp == bfd_abs_section_ptr) | |
3450 | && bfd_coff_symname_in_debug (sub, &sym)) | |
3451 | { | |
3452 | char *name; | |
3453 | bfd_size_type indx; | |
3454 | ||
3455 | name = (char *) debug_contents + sym._n._n_n._n_offset; | |
3456 | indx = _bfd_stringtab_add (debug_strtab, name, true, true); | |
3457 | if (indx == (bfd_size_type) -1) | |
3458 | goto error_return; | |
3459 | *debug_index = indx; | |
3460 | } | |
3461 | ||
3462 | esym += (sym.n_numaux + 1) * symesz; | |
3463 | csectpp += sym.n_numaux + 1; | |
3464 | debug_index += sym.n_numaux + 1; | |
3465 | } | |
3466 | ||
aadf04f7 SS |
3467 | free (debug_contents); |
3468 | debug_contents = NULL; | |
28a0c103 ILT |
3469 | |
3470 | /* Clear the size of subdeb, so that it is not included directly | |
3471 | in the output file. */ | |
3472 | subdeb->_raw_size = 0; | |
3473 | ||
3474 | if (! info->keep_memory) | |
3475 | { | |
3476 | if (! _bfd_coff_free_symbols (sub)) | |
3477 | goto error_return; | |
3478 | } | |
aadf04f7 SS |
3479 | } |
3480 | ||
28a0c103 ILT |
3481 | xcoff_hash_table (info)->debug_section->_raw_size = |
3482 | _bfd_stringtab_size (debug_strtab); | |
3483 | ||
aadf04f7 SS |
3484 | return true; |
3485 | ||
3486 | error_return: | |
28a0c103 ILT |
3487 | if (ldinfo.strings != NULL) |
3488 | free (ldinfo.strings); | |
aadf04f7 SS |
3489 | if (debug_contents != NULL) |
3490 | free (debug_contents); | |
28a0c103 ILT |
3491 | return false; |
3492 | } | |
3493 | ||
28a0c103 ILT |
3494 | /* Add a symbol to the .loader symbols, if necessary. */ |
3495 | ||
3496 | static boolean | |
3497 | xcoff_build_ldsyms (h, p) | |
3498 | struct xcoff_link_hash_entry *h; | |
3499 | PTR p; | |
3500 | { | |
3501 | struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p; | |
3502 | size_t len; | |
3503 | ||
a5c7acea ILT |
3504 | /* If this is a final link, and the symbol was defined as a common |
3505 | symbol in a regular object file, and there was no definition in | |
3506 | any dynamic object, then the linker will have allocated space for | |
3507 | the symbol in a common section but the XCOFF_DEF_REGULAR flag | |
3508 | will not have been set. */ | |
3509 | if (h->root.type == bfd_link_hash_defined | |
3510 | && (h->flags & XCOFF_DEF_REGULAR) == 0 | |
3511 | && (h->flags & XCOFF_REF_REGULAR) != 0 | |
3512 | && (h->flags & XCOFF_DEF_DYNAMIC) == 0 | |
3513 | && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) | |
3514 | h->flags |= XCOFF_DEF_REGULAR; | |
3515 | ||
3516 | /* If all defined symbols should be exported, mark them now. We | |
3517 | don't want to export the actual functions, just the function | |
3518 | descriptors. */ | |
c9746fb6 | 3519 | if (ldinfo->export_defineds |
a5c7acea ILT |
3520 | && (h->flags & XCOFF_DEF_REGULAR) != 0 |
3521 | && h->root.root.string[0] != '.') | |
e8c4696e ILT |
3522 | { |
3523 | boolean export; | |
3524 | ||
3525 | /* We don't export a symbol which is being defined by an object | |
3526 | included from an archive which contains a shared object. The | |
3527 | rationale is that if an archive contains both an unshared and | |
3528 | a shared object, then there must be some reason that the | |
3529 | unshared object is unshared, and we don't want to start | |
3530 | providing a shared version of it. In particular, this solves | |
3531 | a bug involving the _savefNN set of functions. gcc will call | |
3532 | those functions without providing a slot to restore the TOC, | |
3533 | so it is essential that these functions be linked in directly | |
3534 | and not from a shared object, which means that a shared | |
3535 | object which also happens to link them in must not export | |
3536 | them. This is confusing, but I haven't been able to think of | |
3537 | a different approach. Note that the symbols can, of course, | |
3538 | be exported explicitly. */ | |
3539 | export = true; | |
3540 | if ((h->root.type == bfd_link_hash_defined | |
3541 | || h->root.type == bfd_link_hash_defweak) | |
3542 | && h->root.u.def.section->owner != NULL | |
3543 | && h->root.u.def.section->owner->my_archive != NULL) | |
3544 | { | |
3545 | bfd *arbfd, *member; | |
3546 | ||
3547 | arbfd = h->root.u.def.section->owner->my_archive; | |
3548 | member = bfd_openr_next_archived_file (arbfd, (bfd *) NULL); | |
3549 | while (member != NULL) | |
3550 | { | |
3551 | if ((member->flags & DYNAMIC) != 0) | |
3552 | { | |
3553 | export = false; | |
3554 | break; | |
3555 | } | |
3556 | member = bfd_openr_next_archived_file (arbfd, member); | |
3557 | } | |
3558 | } | |
3559 | ||
3560 | if (export) | |
3561 | h->flags |= XCOFF_EXPORT; | |
3562 | } | |
c9746fb6 | 3563 | |
28a0c103 ILT |
3564 | /* We don't want to garbage collect symbols which are not defined in |
3565 | XCOFF files. This is a convenient place to mark them. */ | |
3566 | if (xcoff_hash_table (ldinfo->info)->gc | |
3567 | && (h->flags & XCOFF_MARK) == 0 | |
3568 | && (h->root.type == bfd_link_hash_defined | |
3569 | || h->root.type == bfd_link_hash_defweak) | |
3570 | && (h->root.u.def.section->owner == NULL | |
3571 | || (h->root.u.def.section->owner->xvec | |
3572 | != ldinfo->info->hash->creator))) | |
3573 | h->flags |= XCOFF_MARK; | |
3574 | ||
e8c4696e ILT |
3575 | /* If this symbol is called and defined in a dynamic object, or it |
3576 | is imported, then we need to set up global linkage code for it. | |
3577 | (Unless we did garbage collection and we didn't need this | |
3578 | symbol.) */ | |
28a0c103 | 3579 | if ((h->flags & XCOFF_CALLED) != 0 |
28a0c103 ILT |
3580 | && (h->root.type == bfd_link_hash_undefined |
3581 | || h->root.type == bfd_link_hash_undefweak) | |
3582 | && h->root.root.string[0] == '.' | |
0634a431 ILT |
3583 | && h->descriptor != NULL |
3584 | && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0 | |
c3dffbd7 ILT |
3585 | || ((h->descriptor->flags & XCOFF_IMPORT) != 0 |
3586 | && (h->descriptor->flags & XCOFF_DEF_REGULAR) == 0)) | |
28a0c103 ILT |
3587 | && (! xcoff_hash_table (ldinfo->info)->gc |
3588 | || (h->flags & XCOFF_MARK) != 0)) | |
3589 | { | |
3590 | asection *sec; | |
3591 | struct xcoff_link_hash_entry *hds; | |
3592 | ||
3593 | sec = xcoff_hash_table (ldinfo->info)->linkage_section; | |
3594 | h->root.type = bfd_link_hash_defined; | |
3595 | h->root.u.def.section = sec; | |
3596 | h->root.u.def.value = sec->_raw_size; | |
3597 | h->smclas = XMC_GL; | |
ee174815 | 3598 | h->flags |= XCOFF_DEF_REGULAR; |
28a0c103 ILT |
3599 | sec->_raw_size += XCOFF_GLINK_SIZE; |
3600 | ||
3601 | /* The global linkage code requires a TOC entry for the | |
3602 | descriptor. */ | |
3603 | hds = h->descriptor; | |
3604 | BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined | |
3605 | || hds->root.type == bfd_link_hash_undefweak) | |
0634a431 | 3606 | && (hds->flags & XCOFF_DEF_REGULAR) == 0); |
28a0c103 ILT |
3607 | hds->flags |= XCOFF_MARK; |
3608 | if (hds->toc_section == NULL) | |
3609 | { | |
3610 | hds->toc_section = xcoff_hash_table (ldinfo->info)->toc_section; | |
230de6b8 | 3611 | hds->u.toc_offset = hds->toc_section->_raw_size; |
28a0c103 ILT |
3612 | hds->toc_section->_raw_size += 4; |
3613 | ++xcoff_hash_table (ldinfo->info)->ldrel_count; | |
3614 | ++hds->toc_section->reloc_count; | |
3615 | hds->indx = -2; | |
3616 | hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL; | |
3617 | ||
3618 | /* We need to call xcoff_build_ldsyms recursively here, | |
3619 | because we may already have passed hds on the traversal. */ | |
3620 | xcoff_build_ldsyms (hds, p); | |
3621 | } | |
3622 | } | |
3623 | ||
ee174815 ILT |
3624 | /* If this symbol is exported, but not defined, we need to try to |
3625 | define it. */ | |
3626 | if ((h->flags & XCOFF_EXPORT) != 0 | |
3627 | && (h->flags & XCOFF_IMPORT) == 0 | |
3628 | && (h->flags & XCOFF_DEF_REGULAR) == 0 | |
3629 | && (h->flags & XCOFF_DEF_DYNAMIC) == 0 | |
3630 | && (h->root.type == bfd_link_hash_undefined | |
3631 | || h->root.type == bfd_link_hash_undefweak)) | |
3632 | { | |
3633 | if ((h->flags & XCOFF_DESCRIPTOR) != 0 | |
3634 | && (h->descriptor->root.type == bfd_link_hash_defined | |
3635 | || h->descriptor->root.type == bfd_link_hash_defweak)) | |
3636 | { | |
3637 | asection *sec; | |
3638 | ||
3639 | /* This is an undefined function descriptor associated with | |
3640 | a defined entry point. We can build up a function | |
3641 | descriptor ourselves. Believe it or not, the AIX linker | |
3642 | actually does this, and there are cases where we need to | |
3643 | do it as well. */ | |
3644 | sec = xcoff_hash_table (ldinfo->info)->descriptor_section; | |
3645 | h->root.type = bfd_link_hash_defined; | |
3646 | h->root.u.def.section = sec; | |
3647 | h->root.u.def.value = sec->_raw_size; | |
3648 | h->smclas = XMC_DS; | |
3649 | h->flags |= XCOFF_DEF_REGULAR; | |
3650 | sec->_raw_size += 12; | |
3651 | ||
3652 | /* A function descriptor uses two relocs: one for the | |
3653 | associated code, and one for the TOC address. */ | |
3654 | xcoff_hash_table (ldinfo->info)->ldrel_count += 2; | |
3655 | sec->reloc_count += 2; | |
3656 | ||
3657 | /* We handle writing out the contents of the descriptor in | |
3658 | xcoff_write_global_symbol. */ | |
3659 | } | |
3660 | else | |
3661 | { | |
3662 | (*_bfd_error_handler) | |
b223f950 | 3663 | ("warning: attempt to export undefined symbol `%s'", |
ee174815 | 3664 | h->root.root.string); |
b223f950 ILT |
3665 | h->ldsym = NULL; |
3666 | return true; | |
ee174815 ILT |
3667 | } |
3668 | } | |
3669 | ||
aad2c618 ILT |
3670 | /* If this is still a common symbol, and it wasn't garbage |
3671 | collected, we need to actually allocate space for it in the .bss | |
3672 | section. */ | |
3673 | if (h->root.type == bfd_link_hash_common | |
3674 | && (! xcoff_hash_table (ldinfo->info)->gc | |
3675 | || (h->flags & XCOFF_MARK) != 0) | |
3676 | && h->root.u.c.p->section->_raw_size == 0) | |
3677 | { | |
3678 | BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section)); | |
3679 | h->root.u.c.p->section->_raw_size = h->root.u.c.size; | |
3680 | } | |
3681 | ||
28a0c103 ILT |
3682 | /* We need to add a symbol to the .loader section if it is mentioned |
3683 | in a reloc which we are copying to the .loader section and it was | |
e6080520 ILT |
3684 | not defined or common, or if it is the entry point, or if it is |
3685 | being exported. */ | |
28a0c103 ILT |
3686 | |
3687 | if (((h->flags & XCOFF_LDREL) == 0 | |
3688 | || h->root.type == bfd_link_hash_defined | |
867d923d ILT |
3689 | || h->root.type == bfd_link_hash_defweak |
3690 | || h->root.type == bfd_link_hash_common) | |
e6080520 ILT |
3691 | && (h->flags & XCOFF_ENTRY) == 0 |
3692 | && (h->flags & XCOFF_EXPORT) == 0) | |
28a0c103 ILT |
3693 | { |
3694 | h->ldsym = NULL; | |
3695 | return true; | |
3696 | } | |
3697 | ||
3698 | /* We don't need to add this symbol if we did garbage collection and | |
3699 | we did not mark this symbol. */ | |
3700 | if (xcoff_hash_table (ldinfo->info)->gc | |
3701 | && (h->flags & XCOFF_MARK) == 0) | |
3702 | { | |
3703 | h->ldsym = NULL; | |
3704 | return true; | |
3705 | } | |
3706 | ||
3707 | /* We may have already processed this symbol due to the recursive | |
3708 | call above. */ | |
3709 | if ((h->flags & XCOFF_BUILT_LDSYM) != 0) | |
3710 | return true; | |
3711 | ||
3712 | /* We need to add this symbol to the .loader symbols. */ | |
3713 | ||
e8c4696e ILT |
3714 | BFD_ASSERT (h->ldsym == NULL); |
3715 | h->ldsym = ((struct internal_ldsym *) | |
3716 | bfd_zalloc (ldinfo->output_bfd, | |
3717 | sizeof (struct internal_ldsym))); | |
28a0c103 ILT |
3718 | if (h->ldsym == NULL) |
3719 | { | |
e8c4696e ILT |
3720 | ldinfo->failed = true; |
3721 | return false; | |
28a0c103 ILT |
3722 | } |
3723 | ||
e8c4696e ILT |
3724 | if ((h->flags & XCOFF_IMPORT) != 0) |
3725 | h->ldsym->l_ifile = h->ldindx; | |
3726 | ||
28a0c103 ILT |
3727 | /* The first 3 symbol table indices are reserved to indicate the |
3728 | sections. */ | |
3729 | h->ldindx = ldinfo->ldsym_count + 3; | |
3730 | ||
3731 | ++ldinfo->ldsym_count; | |
3732 | ||
3733 | len = strlen (h->root.root.string); | |
3734 | if (len <= SYMNMLEN) | |
3735 | strncpy (h->ldsym->_l._l_name, h->root.root.string, SYMNMLEN); | |
3736 | else | |
3737 | { | |
3738 | if (ldinfo->string_size + len + 3 > ldinfo->string_alc) | |
3739 | { | |
3740 | size_t newalc; | |
3741 | bfd_byte *newstrings; | |
3742 | ||
3743 | newalc = ldinfo->string_alc * 2; | |
3744 | if (newalc == 0) | |
3745 | newalc = 32; | |
3746 | while (ldinfo->string_size + len + 3 > newalc) | |
3747 | newalc *= 2; | |
3748 | ||
58142f10 ILT |
3749 | newstrings = ((bfd_byte *) |
3750 | bfd_realloc ((PTR) ldinfo->strings, newalc)); | |
28a0c103 ILT |
3751 | if (newstrings == NULL) |
3752 | { | |
3753 | ldinfo->failed = true; | |
28a0c103 ILT |
3754 | return false; |
3755 | } | |
3756 | ldinfo->string_alc = newalc; | |
3757 | ldinfo->strings = newstrings; | |
aadf04f7 | 3758 | } |
28a0c103 ILT |
3759 | |
3760 | bfd_put_16 (ldinfo->output_bfd, len + 1, | |
3761 | ldinfo->strings + ldinfo->string_size); | |
3762 | strcpy (ldinfo->strings + ldinfo->string_size + 2, h->root.root.string); | |
3763 | h->ldsym->_l._l_l._l_zeroes = 0; | |
3764 | h->ldsym->_l._l_l._l_offset = ldinfo->string_size + 2; | |
3765 | ldinfo->string_size += len + 3; | |
aadf04f7 | 3766 | } |
28a0c103 ILT |
3767 | |
3768 | h->flags |= XCOFF_BUILT_LDSYM; | |
3769 | ||
3770 | return true; | |
aadf04f7 SS |
3771 | } |
3772 | \f | |
3773 | /* Do the final link step. */ | |
3774 | ||
3775 | boolean | |
3776 | _bfd_xcoff_bfd_final_link (abfd, info) | |
3777 | bfd *abfd; | |
3778 | struct bfd_link_info *info; | |
3779 | { | |
3780 | bfd_size_type symesz; | |
3781 | struct xcoff_final_link_info finfo; | |
3782 | asection *o; | |
3783 | struct bfd_link_order *p; | |
3784 | size_t max_contents_size; | |
3785 | size_t max_sym_count; | |
3786 | size_t max_lineno_count; | |
3787 | size_t max_reloc_count; | |
3788 | size_t max_output_reloc_count; | |
3789 | file_ptr rel_filepos; | |
3790 | unsigned int relsz; | |
3791 | file_ptr line_filepos; | |
3792 | unsigned int linesz; | |
3793 | bfd *sub; | |
3794 | bfd_byte *external_relocs = NULL; | |
3795 | char strbuf[STRING_SIZE_SIZE]; | |
3796 | ||
583db7a8 ILT |
3797 | if (info->shared) |
3798 | abfd->flags |= DYNAMIC; | |
3799 | ||
aadf04f7 SS |
3800 | symesz = bfd_coff_symesz (abfd); |
3801 | ||
3802 | finfo.info = info; | |
3803 | finfo.output_bfd = abfd; | |
3804 | finfo.strtab = NULL; | |
3805 | finfo.section_info = NULL; | |
3806 | finfo.last_file_index = -1; | |
3807 | finfo.toc_symindx = -1; | |
3808 | finfo.internal_syms = NULL; | |
3809 | finfo.sym_indices = NULL; | |
3810 | finfo.outsyms = NULL; | |
3811 | finfo.linenos = NULL; | |
3812 | finfo.contents = NULL; | |
3813 | finfo.external_relocs = NULL; | |
3814 | ||
28a0c103 ILT |
3815 | finfo.ldsym = ((struct external_ldsym *) |
3816 | (xcoff_hash_table (info)->loader_section->contents | |
3817 | + LDHDRSZ)); | |
3818 | finfo.ldrel = ((struct external_ldrel *) | |
3819 | (xcoff_hash_table (info)->loader_section->contents | |
3820 | + LDHDRSZ | |
3821 | + xcoff_hash_table (info)->ldhdr.l_nsyms * LDSYMSZ)); | |
3822 | ||
aadf04f7 SS |
3823 | xcoff_data (abfd)->coff.link_info = info; |
3824 | ||
3825 | finfo.strtab = _bfd_stringtab_init (); | |
3826 | if (finfo.strtab == NULL) | |
3827 | goto error_return; | |
3828 | ||
4a378b13 ILT |
3829 | /* Count the line number and relocation entries required for the |
3830 | output file. Determine a few maximum sizes. */ | |
3831 | max_contents_size = 0; | |
3832 | max_lineno_count = 0; | |
3833 | max_reloc_count = 0; | |
3834 | for (o = abfd->sections; o != NULL; o = o->next) | |
3835 | { | |
3836 | o->reloc_count = 0; | |
3837 | o->lineno_count = 0; | |
3838 | for (p = o->link_order_head; p != NULL; p = p->next) | |
3839 | { | |
3840 | if (p->type == bfd_indirect_link_order) | |
3841 | { | |
3842 | asection *sec; | |
3843 | ||
3844 | sec = p->u.indirect.section; | |
3845 | ||
7ec49f91 ILT |
3846 | /* Mark all sections which are to be included in the |
3847 | link. This will normally be every section. We need | |
3848 | to do this so that we can identify any sections which | |
3849 | the linker has decided to not include. */ | |
ff0e4a93 | 3850 | sec->linker_mark = true; |
7ec49f91 | 3851 | |
4a378b13 ILT |
3852 | if (info->strip == strip_none |
3853 | || info->strip == strip_some) | |
3854 | o->lineno_count += sec->lineno_count; | |
3855 | ||
3856 | o->reloc_count += sec->reloc_count; | |
3857 | ||
3858 | if (sec->_raw_size > max_contents_size) | |
3859 | max_contents_size = sec->_raw_size; | |
3860 | if (sec->lineno_count > max_lineno_count) | |
3861 | max_lineno_count = sec->lineno_count; | |
3862 | if (coff_section_data (sec->owner, sec) != NULL | |
3863 | && xcoff_section_data (sec->owner, sec) != NULL | |
3864 | && (xcoff_section_data (sec->owner, sec)->lineno_count | |
3865 | > max_lineno_count)) | |
3866 | max_lineno_count = | |
3867 | xcoff_section_data (sec->owner, sec)->lineno_count; | |
3868 | if (sec->reloc_count > max_reloc_count) | |
3869 | max_reloc_count = sec->reloc_count; | |
3870 | } | |
3871 | else if (p->type == bfd_section_reloc_link_order | |
3872 | || p->type == bfd_symbol_reloc_link_order) | |
3873 | ++o->reloc_count; | |
3874 | } | |
3875 | } | |
3876 | ||
aadf04f7 | 3877 | /* Compute the file positions for all the sections. */ |
28a0c103 ILT |
3878 | if (abfd->output_has_begun) |
3879 | { | |
3880 | if (xcoff_hash_table (info)->file_align != 0) | |
3881 | abort (); | |
3882 | } | |
3883 | else | |
3884 | { | |
3885 | bfd_vma file_align; | |
3886 | ||
3887 | file_align = xcoff_hash_table (info)->file_align; | |
3888 | if (file_align != 0) | |
3889 | { | |
3890 | boolean saw_contents; | |
3891 | int indx; | |
3892 | asection **op; | |
3893 | file_ptr sofar; | |
3894 | ||
3895 | /* Insert .pad sections before every section which has | |
3896 | contents and is loaded, if it is preceded by some other | |
3897 | section which has contents and is loaded. */ | |
3898 | saw_contents = true; | |
3899 | for (op = &abfd->sections; *op != NULL; op = &(*op)->next) | |
3900 | { | |
28a0c103 ILT |
3901 | if (strcmp ((*op)->name, ".pad") == 0) |
3902 | saw_contents = false; | |
3903 | else if (((*op)->flags & SEC_HAS_CONTENTS) != 0 | |
3904 | && ((*op)->flags & SEC_LOAD) != 0) | |
3905 | { | |
3906 | if (! saw_contents) | |
3907 | saw_contents = true; | |
3908 | else | |
3909 | { | |
3910 | asection *n, *hold; | |
3911 | ||
3912 | hold = *op; | |
3913 | *op = NULL; | |
3914 | n = bfd_make_section_anyway (abfd, ".pad"); | |
3915 | BFD_ASSERT (*op == n); | |
3916 | n->next = hold; | |
3917 | n->flags = SEC_HAS_CONTENTS; | |
3918 | n->alignment_power = 0; | |
3919 | saw_contents = false; | |
3920 | } | |
3921 | } | |
3922 | } | |
3923 | ||
3924 | /* Reset the section indices after inserting the new | |
3925 | sections. */ | |
3926 | indx = 0; | |
3927 | for (o = abfd->sections; o != NULL; o = o->next) | |
3928 | { | |
3929 | ++indx; | |
3930 | o->target_index = indx; | |
3931 | } | |
3932 | BFD_ASSERT ((unsigned int) indx == abfd->section_count); | |
3933 | ||
3934 | /* Work out appropriate sizes for the .pad sections to force | |
3935 | each section to land on a page boundary. This bit of | |
3936 | code knows what compute_section_file_positions is going | |
3937 | to do. */ | |
3938 | sofar = bfd_coff_filhsz (abfd); | |
867d923d | 3939 | sofar += bfd_coff_aoutsz (abfd); |
28a0c103 | 3940 | sofar += abfd->section_count * bfd_coff_scnhsz (abfd); |
4a378b13 ILT |
3941 | for (o = abfd->sections; o != NULL; o = o->next) |
3942 | if (o->reloc_count >= 0xffff || o->lineno_count >= 0xffff) | |
3943 | sofar += bfd_coff_scnhsz (abfd); | |
28a0c103 ILT |
3944 | |
3945 | for (o = abfd->sections; o != NULL; o = o->next) | |
3946 | { | |
3947 | if (strcmp (o->name, ".pad") == 0) | |
3948 | { | |
3949 | bfd_vma pageoff; | |
3950 | ||
3951 | BFD_ASSERT (o->_raw_size == 0); | |
3952 | pageoff = sofar & (file_align - 1); | |
3953 | if (pageoff != 0) | |
3954 | { | |
3955 | o->_raw_size = file_align - pageoff; | |
3956 | sofar += file_align - pageoff; | |
3957 | o->flags |= SEC_HAS_CONTENTS; | |
3958 | } | |
3959 | } | |
3960 | else | |
3961 | { | |
3962 | if ((o->flags & SEC_HAS_CONTENTS) != 0) | |
3963 | sofar += BFD_ALIGN (o->_raw_size, | |
3964 | 1 << o->alignment_power); | |
3965 | } | |
3966 | } | |
3967 | } | |
3968 | ||
724a4c0d ILT |
3969 | if (! bfd_coff_compute_section_file_positions (abfd)) |
3970 | goto error_return; | |
28a0c103 | 3971 | } |
aadf04f7 | 3972 | |
aadf04f7 SS |
3973 | /* Allocate space for the pointers we need to keep for the relocs. */ |
3974 | { | |
3975 | unsigned int i; | |
3976 | ||
3977 | /* We use section_count + 1, rather than section_count, because | |
3978 | the target_index fields are 1 based. */ | |
58142f10 ILT |
3979 | finfo.section_info = |
3980 | ((struct xcoff_link_section_info *) | |
3981 | bfd_malloc ((abfd->section_count + 1) | |
3982 | * sizeof (struct xcoff_link_section_info))); | |
aadf04f7 | 3983 | if (finfo.section_info == NULL) |
58142f10 | 3984 | goto error_return; |
aadf04f7 SS |
3985 | for (i = 0; i <= abfd->section_count; i++) |
3986 | { | |
3987 | finfo.section_info[i].relocs = NULL; | |
3988 | finfo.section_info[i].rel_hashes = NULL; | |
2d7de17d | 3989 | finfo.section_info[i].toc_rel_hashes = NULL; |
aadf04f7 SS |
3990 | } |
3991 | } | |
3992 | ||
4a378b13 ILT |
3993 | /* Set the file positions for the relocs. */ |
3994 | rel_filepos = obj_relocbase (abfd); | |
3995 | relsz = bfd_coff_relsz (abfd); | |
aadf04f7 SS |
3996 | max_output_reloc_count = 0; |
3997 | for (o = abfd->sections; o != NULL; o = o->next) | |
3998 | { | |
4a378b13 ILT |
3999 | if (o->reloc_count == 0) |
4000 | o->rel_filepos = 0; | |
aadf04f7 SS |
4001 | else |
4002 | { | |
4a378b13 ILT |
4003 | o->flags |= SEC_RELOC; |
4004 | o->rel_filepos = rel_filepos; | |
4005 | rel_filepos += o->reloc_count * relsz; | |
aadf04f7 | 4006 | |
aadf04f7 SS |
4007 | /* We don't know the indices of global symbols until we have |
4008 | written out all the local symbols. For each section in | |
4009 | the output file, we keep an array of pointers to hash | |
4010 | table entries. Each entry in the array corresponds to a | |
4011 | reloc. When we find a reloc against a global symbol, we | |
4012 | set the corresponding entry in this array so that we can | |
4013 | fix up the symbol index after we have written out all the | |
4014 | local symbols. | |
4015 | ||
4016 | Because of this problem, we also keep the relocs in | |
4017 | memory until the end of the link. This wastes memory. | |
4018 | We could backpatch the file later, I suppose, although it | |
4019 | would be slow. */ | |
4020 | finfo.section_info[o->target_index].relocs = | |
4021 | ((struct internal_reloc *) | |
58142f10 | 4022 | bfd_malloc (o->reloc_count * sizeof (struct internal_reloc))); |
aadf04f7 SS |
4023 | finfo.section_info[o->target_index].rel_hashes = |
4024 | ((struct xcoff_link_hash_entry **) | |
58142f10 | 4025 | bfd_malloc (o->reloc_count |
aadf04f7 SS |
4026 | * sizeof (struct xcoff_link_hash_entry *))); |
4027 | if (finfo.section_info[o->target_index].relocs == NULL | |
4028 | || finfo.section_info[o->target_index].rel_hashes == NULL) | |
58142f10 | 4029 | goto error_return; |
aadf04f7 SS |
4030 | |
4031 | if (o->reloc_count > max_output_reloc_count) | |
4032 | max_output_reloc_count = o->reloc_count; | |
4033 | } | |
4a378b13 ILT |
4034 | } |
4035 | ||
4036 | /* We now know the size of the relocs, so we can determine the file | |
4037 | positions of the line numbers. */ | |
4038 | line_filepos = rel_filepos; | |
4039 | finfo.line_filepos = line_filepos; | |
4040 | linesz = bfd_coff_linesz (abfd); | |
4041 | for (o = abfd->sections; o != NULL; o = o->next) | |
4042 | { | |
4043 | if (o->lineno_count == 0) | |
4044 | o->line_filepos = 0; | |
4045 | else | |
4046 | { | |
4047 | o->line_filepos = line_filepos; | |
4048 | line_filepos += o->lineno_count * linesz; | |
4049 | } | |
aadf04f7 SS |
4050 | |
4051 | /* Reset the reloc and lineno counts, so that we can use them to | |
4052 | count the number of entries we have output so far. */ | |
4053 | o->reloc_count = 0; | |
4054 | o->lineno_count = 0; | |
4055 | } | |
4056 | ||
4057 | obj_sym_filepos (abfd) = line_filepos; | |
4058 | ||
4059 | /* Figure out the largest number of symbols in an input BFD. Take | |
4060 | the opportunity to clear the output_has_begun fields of all the | |
e8c4696e | 4061 | input BFD's. We want at least 6 symbols, since that is the |
aadf04f7 | 4062 | number which xcoff_write_global_symbol may need. */ |
e8c4696e | 4063 | max_sym_count = 6; |
aadf04f7 SS |
4064 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
4065 | { | |
4066 | size_t sz; | |
4067 | ||
4068 | sub->output_has_begun = false; | |
4069 | sz = obj_raw_syment_count (sub); | |
4070 | if (sz > max_sym_count) | |
4071 | max_sym_count = sz; | |
4072 | } | |
4073 | ||
4074 | /* Allocate some buffers used while linking. */ | |
4075 | finfo.internal_syms = ((struct internal_syment *) | |
58142f10 ILT |
4076 | bfd_malloc (max_sym_count |
4077 | * sizeof (struct internal_syment))); | |
4078 | finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long)); | |
aadf04f7 | 4079 | finfo.outsyms = ((bfd_byte *) |
58142f10 ILT |
4080 | bfd_malloc ((size_t) ((max_sym_count + 1) * symesz))); |
4081 | finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count | |
4082 | * bfd_coff_linesz (abfd)); | |
4083 | finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); | |
4084 | finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz); | |
aadf04f7 SS |
4085 | if ((finfo.internal_syms == NULL && max_sym_count > 0) |
4086 | || (finfo.sym_indices == NULL && max_sym_count > 0) | |
4087 | || finfo.outsyms == NULL | |
4088 | || (finfo.linenos == NULL && max_lineno_count > 0) | |
4089 | || (finfo.contents == NULL && max_contents_size > 0) | |
4090 | || (finfo.external_relocs == NULL && max_reloc_count > 0)) | |
58142f10 | 4091 | goto error_return; |
aadf04f7 SS |
4092 | |
4093 | obj_raw_syment_count (abfd) = 0; | |
4094 | xcoff_data (abfd)->toc = (bfd_vma) -1; | |
4095 | ||
aadf04f7 SS |
4096 | /* We now know the position of everything in the file, except that |
4097 | we don't know the size of the symbol table and therefore we don't | |
4098 | know where the string table starts. We just build the string | |
4099 | table in memory as we go along. We process all the relocations | |
4100 | for a single input file at once. */ | |
4101 | for (o = abfd->sections; o != NULL; o = o->next) | |
4102 | { | |
4103 | for (p = o->link_order_head; p != NULL; p = p->next) | |
4104 | { | |
4105 | if (p->type == bfd_indirect_link_order | |
4106 | && p->u.indirect.section->owner->xvec == abfd->xvec) | |
4107 | { | |
4108 | sub = p->u.indirect.section->owner; | |
4109 | if (! sub->output_has_begun) | |
4110 | { | |
4111 | if (! xcoff_link_input_bfd (&finfo, sub)) | |
4112 | goto error_return; | |
4113 | sub->output_has_begun = true; | |
4114 | } | |
4115 | } | |
4116 | else if (p->type == bfd_section_reloc_link_order | |
4117 | || p->type == bfd_symbol_reloc_link_order) | |
4118 | { | |
4119 | if (! xcoff_reloc_link_order (abfd, &finfo, o, p)) | |
4120 | goto error_return; | |
4121 | } | |
4122 | else | |
4123 | { | |
4124 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
4125 | goto error_return; | |
4126 | } | |
4127 | } | |
4128 | } | |
4129 | ||
4130 | /* Free up the buffers used by xcoff_link_input_bfd. */ | |
4131 | ||
4132 | if (finfo.internal_syms != NULL) | |
4133 | { | |
4134 | free (finfo.internal_syms); | |
4135 | finfo.internal_syms = NULL; | |
4136 | } | |
4137 | if (finfo.sym_indices != NULL) | |
4138 | { | |
4139 | free (finfo.sym_indices); | |
4140 | finfo.sym_indices = NULL; | |
4141 | } | |
4142 | if (finfo.linenos != NULL) | |
4143 | { | |
4144 | free (finfo.linenos); | |
4145 | finfo.linenos = NULL; | |
4146 | } | |
4147 | if (finfo.contents != NULL) | |
4148 | { | |
4149 | free (finfo.contents); | |
4150 | finfo.contents = NULL; | |
4151 | } | |
4152 | if (finfo.external_relocs != NULL) | |
4153 | { | |
4154 | free (finfo.external_relocs); | |
4155 | finfo.external_relocs = NULL; | |
4156 | } | |
4157 | ||
4158 | /* The value of the last C_FILE symbol is supposed to be -1. Write | |
4159 | it out again. */ | |
4160 | if (finfo.last_file_index != -1) | |
4161 | { | |
4162 | finfo.last_file.n_value = -1; | |
4163 | bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, | |
4164 | (PTR) finfo.outsyms); | |
4165 | if (bfd_seek (abfd, | |
4166 | (obj_sym_filepos (abfd) | |
4167 | + finfo.last_file_index * symesz), | |
4168 | SEEK_SET) != 0 | |
4169 | || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz) | |
4170 | goto error_return; | |
4171 | } | |
4172 | ||
28a0c103 ILT |
4173 | /* Write out all the global symbols which do not come from XCOFF |
4174 | input files. */ | |
4175 | xcoff_link_hash_traverse (xcoff_hash_table (info), | |
4176 | xcoff_write_global_symbol, | |
4177 | (PTR) &finfo); | |
4178 | ||
aadf04f7 SS |
4179 | if (finfo.outsyms != NULL) |
4180 | { | |
4181 | free (finfo.outsyms); | |
4182 | finfo.outsyms = NULL; | |
4183 | } | |
4184 | ||
4185 | /* Now that we have written out all the global symbols, we know the | |
4186 | symbol indices to use for relocs against them, and we can finally | |
4187 | write out the relocs. */ | |
939b2169 | 4188 | external_relocs = (bfd_byte *) bfd_malloc (max_output_reloc_count * relsz); |
aadf04f7 | 4189 | if (external_relocs == NULL && max_output_reloc_count != 0) |
939b2169 | 4190 | goto error_return; |
aadf04f7 SS |
4191 | |
4192 | for (o = abfd->sections; o != NULL; o = o->next) | |
4193 | { | |
4194 | struct internal_reloc *irel; | |
4195 | struct internal_reloc *irelend; | |
4196 | struct xcoff_link_hash_entry **rel_hash; | |
2d7de17d | 4197 | struct xcoff_toc_rel_hash *toc_rel_hash; |
aadf04f7 SS |
4198 | bfd_byte *erel; |
4199 | ||
4200 | if (o->reloc_count == 0) | |
4201 | continue; | |
4202 | ||
aadf04f7 SS |
4203 | irel = finfo.section_info[o->target_index].relocs; |
4204 | irelend = irel + o->reloc_count; | |
4205 | rel_hash = finfo.section_info[o->target_index].rel_hashes; | |
aadf04f7 SS |
4206 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) |
4207 | { | |
4208 | if (*rel_hash != NULL) | |
4209 | { | |
4210 | if ((*rel_hash)->indx < 0) | |
4211 | { | |
4212 | if (! ((*info->callbacks->unattached_reloc) | |
28a0c103 ILT |
4213 | (info, (*rel_hash)->root.root.string, |
4214 | (bfd *) NULL, o, irel->r_vaddr))) | |
aadf04f7 SS |
4215 | goto error_return; |
4216 | (*rel_hash)->indx = 0; | |
4217 | } | |
4218 | irel->r_symndx = (*rel_hash)->indx; | |
4219 | } | |
aadf04f7 SS |
4220 | } |
4221 | ||
2d7de17d ILT |
4222 | for (toc_rel_hash = finfo.section_info[o->target_index].toc_rel_hashes; |
4223 | toc_rel_hash != NULL; | |
4224 | toc_rel_hash = toc_rel_hash->next) | |
4225 | { | |
4226 | if (toc_rel_hash->h->u.toc_indx < 0) | |
4227 | { | |
4228 | if (! ((*info->callbacks->unattached_reloc) | |
4229 | (info, toc_rel_hash->h->root.root.string, | |
4230 | (bfd *) NULL, o, toc_rel_hash->rel->r_vaddr))) | |
4231 | goto error_return; | |
4232 | toc_rel_hash->h->u.toc_indx = 0; | |
4233 | } | |
4234 | toc_rel_hash->rel->r_symndx = toc_rel_hash->h->u.toc_indx; | |
4235 | } | |
4236 | ||
28a0c103 ILT |
4237 | /* XCOFF requires that the relocs be sorted by address. We tend |
4238 | to produce them in the order in which their containing csects | |
4239 | appear in the symbol table, which is not necessarily by | |
4240 | address. So we sort them here. There may be a better way to | |
4241 | do this. */ | |
4242 | qsort ((PTR) finfo.section_info[o->target_index].relocs, | |
4243 | o->reloc_count, sizeof (struct internal_reloc), | |
4244 | xcoff_sort_relocs); | |
4245 | ||
4246 | irel = finfo.section_info[o->target_index].relocs; | |
4247 | irelend = irel + o->reloc_count; | |
4248 | erel = external_relocs; | |
4249 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) | |
4250 | bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); | |
4251 | ||
aadf04f7 SS |
4252 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 |
4253 | || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, | |
4254 | abfd) != relsz * o->reloc_count) | |
4255 | goto error_return; | |
4256 | } | |
4257 | ||
4258 | if (external_relocs != NULL) | |
4259 | { | |
4260 | free (external_relocs); | |
4261 | external_relocs = NULL; | |
4262 | } | |
4263 | ||
4264 | /* Free up the section information. */ | |
4265 | if (finfo.section_info != NULL) | |
4266 | { | |
4267 | unsigned int i; | |
4268 | ||
4269 | for (i = 0; i < abfd->section_count; i++) | |
4270 | { | |
4271 | if (finfo.section_info[i].relocs != NULL) | |
4272 | free (finfo.section_info[i].relocs); | |
4273 | if (finfo.section_info[i].rel_hashes != NULL) | |
4274 | free (finfo.section_info[i].rel_hashes); | |
4275 | } | |
4276 | free (finfo.section_info); | |
4277 | finfo.section_info = NULL; | |
4278 | } | |
4279 | ||
28a0c103 ILT |
4280 | /* Write out the loader section contents. */ |
4281 | BFD_ASSERT ((bfd_byte *) finfo.ldrel | |
4282 | == (xcoff_hash_table (info)->loader_section->contents | |
4283 | + xcoff_hash_table (info)->ldhdr.l_impoff)); | |
4284 | o = xcoff_hash_table (info)->loader_section; | |
4285 | if (! bfd_set_section_contents (abfd, o->output_section, | |
4286 | o->contents, o->output_offset, | |
4287 | o->_raw_size)) | |
4288 | goto error_return; | |
4289 | ||
ee174815 | 4290 | /* Write out the magic sections. */ |
28a0c103 ILT |
4291 | o = xcoff_hash_table (info)->linkage_section; |
4292 | if (o->_raw_size > 0 | |
4293 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, | |
4294 | o->output_offset, o->_raw_size)) | |
4295 | goto error_return; | |
4296 | o = xcoff_hash_table (info)->toc_section; | |
ee174815 ILT |
4297 | if (o->_raw_size > 0 |
4298 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, | |
4299 | o->output_offset, o->_raw_size)) | |
4300 | goto error_return; | |
4301 | o = xcoff_hash_table (info)->descriptor_section; | |
28a0c103 ILT |
4302 | if (o->_raw_size > 0 |
4303 | && ! bfd_set_section_contents (abfd, o->output_section, o->contents, | |
4304 | o->output_offset, o->_raw_size)) | |
4305 | goto error_return; | |
4306 | ||
aadf04f7 SS |
4307 | /* Write out the string table. */ |
4308 | if (bfd_seek (abfd, | |
4309 | (obj_sym_filepos (abfd) | |
4310 | + obj_raw_syment_count (abfd) * symesz), | |
4311 | SEEK_SET) != 0) | |
4312 | goto error_return; | |
4313 | bfd_h_put_32 (abfd, | |
4314 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, | |
4315 | (bfd_byte *) strbuf); | |
4316 | if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) | |
4317 | goto error_return; | |
4318 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) | |
4319 | goto error_return; | |
4320 | ||
4321 | _bfd_stringtab_free (finfo.strtab); | |
4322 | ||
4323 | /* Write out the debugging string table. */ | |
4324 | o = xcoff_hash_table (info)->debug_section; | |
4325 | if (o != NULL) | |
4326 | { | |
4327 | struct bfd_strtab_hash *debug_strtab; | |
4328 | ||
4329 | debug_strtab = xcoff_hash_table (info)->debug_strtab; | |
4330 | BFD_ASSERT (o->output_section->_raw_size - o->output_offset | |
4331 | >= _bfd_stringtab_size (debug_strtab)); | |
4332 | if (bfd_seek (abfd, | |
4333 | o->output_section->filepos + o->output_offset, | |
4334 | SEEK_SET) != 0) | |
4335 | goto error_return; | |
4336 | if (! _bfd_stringtab_emit (abfd, debug_strtab)) | |
4337 | goto error_return; | |
4338 | } | |
4339 | ||
4340 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to | |
4341 | not try to write out the symbols. */ | |
4342 | bfd_get_symcount (abfd) = 0; | |
4343 | ||
4344 | return true; | |
4345 | ||
4346 | error_return: | |
4347 | if (finfo.strtab != NULL) | |
4348 | _bfd_stringtab_free (finfo.strtab); | |
4349 | if (finfo.section_info != NULL) | |
4350 | { | |
4351 | unsigned int i; | |
4352 | ||
4353 | for (i = 0; i < abfd->section_count; i++) | |
4354 | { | |
4355 | if (finfo.section_info[i].relocs != NULL) | |
4356 | free (finfo.section_info[i].relocs); | |
4357 | if (finfo.section_info[i].rel_hashes != NULL) | |
4358 | free (finfo.section_info[i].rel_hashes); | |
4359 | } | |
4360 | free (finfo.section_info); | |
4361 | } | |
4362 | if (finfo.internal_syms != NULL) | |
4363 | free (finfo.internal_syms); | |
4364 | if (finfo.sym_indices != NULL) | |
4365 | free (finfo.sym_indices); | |
4366 | if (finfo.outsyms != NULL) | |
4367 | free (finfo.outsyms); | |
4368 | if (finfo.linenos != NULL) | |
4369 | free (finfo.linenos); | |
4370 | if (finfo.contents != NULL) | |
4371 | free (finfo.contents); | |
4372 | if (finfo.external_relocs != NULL) | |
4373 | free (finfo.external_relocs); | |
4374 | if (external_relocs != NULL) | |
4375 | free (external_relocs); | |
4376 | return false; | |
4377 | } | |
4378 | ||
4379 | /* Link an input file into the linker output file. This function | |
4380 | handles all the sections and relocations of the input file at once. */ | |
4381 | ||
4382 | static boolean | |
4383 | xcoff_link_input_bfd (finfo, input_bfd) | |
4384 | struct xcoff_final_link_info *finfo; | |
4385 | bfd *input_bfd; | |
4386 | { | |
4387 | bfd *output_bfd; | |
4388 | const char *strings; | |
4389 | bfd_size_type syment_base; | |
4390 | unsigned int n_tmask; | |
4391 | unsigned int n_btshft; | |
4392 | boolean copy, hash; | |
4393 | bfd_size_type isymesz; | |
4394 | bfd_size_type osymesz; | |
4395 | bfd_size_type linesz; | |
4396 | bfd_byte *esym; | |
4397 | bfd_byte *esym_end; | |
b73322d9 | 4398 | struct xcoff_link_hash_entry **sym_hash; |
aadf04f7 SS |
4399 | struct internal_syment *isymp; |
4400 | asection **csectpp; | |
4401 | unsigned long *debug_index; | |
4402 | long *indexp; | |
4403 | unsigned long output_index; | |
4404 | bfd_byte *outsym; | |
f630a0a4 | 4405 | unsigned int incls; |
b73322d9 | 4406 | asection *oline; |
aadf04f7 SS |
4407 | boolean keep_syms; |
4408 | asection *o; | |
4409 | ||
28a0c103 ILT |
4410 | /* We can just skip DYNAMIC files, unless this is a static link. */ |
4411 | if ((input_bfd->flags & DYNAMIC) != 0 | |
4412 | && ! finfo->info->static_link) | |
4413 | return true; | |
4414 | ||
aadf04f7 SS |
4415 | /* Move all the symbols to the output file. */ |
4416 | ||
4417 | output_bfd = finfo->output_bfd; | |
4418 | strings = NULL; | |
4419 | syment_base = obj_raw_syment_count (output_bfd); | |
4420 | isymesz = bfd_coff_symesz (input_bfd); | |
4421 | osymesz = bfd_coff_symesz (output_bfd); | |
4422 | linesz = bfd_coff_linesz (input_bfd); | |
4423 | BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); | |
4424 | ||
4425 | n_tmask = coff_data (input_bfd)->local_n_tmask; | |
4426 | n_btshft = coff_data (input_bfd)->local_n_btshft; | |
4427 | ||
4428 | /* Define macros so that ISFCN, et. al., macros work correctly. */ | |
4429 | #define N_TMASK n_tmask | |
4430 | #define N_BTSHFT n_btshft | |
4431 | ||
4432 | copy = false; | |
4433 | if (! finfo->info->keep_memory) | |
4434 | copy = true; | |
4435 | hash = true; | |
4436 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
4437 | hash = false; | |
4438 | ||
4439 | if (! _bfd_coff_get_external_symbols (input_bfd)) | |
4440 | return false; | |
4441 | ||
4442 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
4443 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
4444 | sym_hash = obj_xcoff_sym_hashes (input_bfd); | |
4445 | csectpp = xcoff_data (input_bfd)->csects; | |
4446 | debug_index = xcoff_data (input_bfd)->debug_indices; | |
4447 | isymp = finfo->internal_syms; | |
4448 | indexp = finfo->sym_indices; | |
4449 | output_index = syment_base; | |
4450 | outsym = finfo->outsyms; | |
f630a0a4 | 4451 | incls = 0; |
b73322d9 | 4452 | oline = NULL; |
aadf04f7 SS |
4453 | |
4454 | while (esym < esym_end) | |
4455 | { | |
4456 | struct internal_syment isym; | |
4457 | union internal_auxent aux; | |
4458 | int smtyp = 0; | |
4459 | boolean skip; | |
4460 | boolean require; | |
4461 | int add; | |
4462 | ||
4463 | bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); | |
4464 | ||
4465 | /* If this is a C_EXT or C_HIDEXT symbol, we need the csect | |
4466 | information. */ | |
4467 | if (isymp->n_sclass == C_EXT || isymp->n_sclass == C_HIDEXT) | |
4468 | { | |
4469 | BFD_ASSERT (isymp->n_numaux > 0); | |
4470 | bfd_coff_swap_aux_in (input_bfd, | |
4471 | (PTR) (esym + isymesz * isymp->n_numaux), | |
4472 | isymp->n_type, isymp->n_sclass, | |
4473 | isymp->n_numaux - 1, isymp->n_numaux, | |
4474 | (PTR) &aux); | |
4475 | smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); | |
4476 | } | |
4477 | ||
4478 | /* Make a copy of *isymp so that the relocate_section function | |
4479 | always sees the original values. This is more reliable than | |
4480 | always recomputing the symbol value even if we are stripping | |
4481 | the symbol. */ | |
4482 | isym = *isymp; | |
4483 | ||
28a0c103 ILT |
4484 | /* If this symbol is in the .loader section, swap out the |
4485 | .loader symbol information. If this is an external symbol | |
4486 | reference to a defined symbol, though, then wait until we get | |
4487 | to the definition. */ | |
4488 | if (isym.n_sclass == C_EXT | |
4489 | && *sym_hash != NULL | |
4490 | && (*sym_hash)->ldsym != NULL | |
4491 | && (smtyp != XTY_ER | |
4492 | || (*sym_hash)->root.type == bfd_link_hash_undefined)) | |
4493 | { | |
4494 | struct xcoff_link_hash_entry *h; | |
4495 | struct internal_ldsym *ldsym; | |
4496 | ||
4497 | h = *sym_hash; | |
4498 | ldsym = h->ldsym; | |
4499 | if (isym.n_scnum > 0) | |
4500 | { | |
4501 | ldsym->l_scnum = (*csectpp)->output_section->target_index; | |
4502 | ldsym->l_value = (isym.n_value | |
4503 | + (*csectpp)->output_section->vma | |
4504 | + (*csectpp)->output_offset | |
4505 | - (*csectpp)->vma); | |
4506 | } | |
4507 | else | |
4508 | { | |
4509 | ldsym->l_scnum = isym.n_scnum; | |
4510 | ldsym->l_value = isym.n_value; | |
4511 | } | |
4512 | ||
4513 | ldsym->l_smtype = smtyp; | |
4514 | if (((h->flags & XCOFF_DEF_REGULAR) == 0 | |
0634a431 | 4515 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) |
28a0c103 ILT |
4516 | || (h->flags & XCOFF_IMPORT) != 0) |
4517 | ldsym->l_smtype |= L_IMPORT; | |
4518 | if (((h->flags & XCOFF_DEF_REGULAR) != 0 | |
0634a431 | 4519 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) |
28a0c103 ILT |
4520 | || (h->flags & XCOFF_EXPORT) != 0) |
4521 | ldsym->l_smtype |= L_EXPORT; | |
4522 | if ((h->flags & XCOFF_ENTRY) != 0) | |
4523 | ldsym->l_smtype |= L_ENTRY; | |
4524 | ||
4525 | ldsym->l_smclas = aux.x_csect.x_smclas; | |
4526 | ||
4527 | if (ldsym->l_ifile == (bfd_size_type) -1) | |
4528 | ldsym->l_ifile = 0; | |
4529 | else if (ldsym->l_ifile == 0) | |
4530 | { | |
4531 | if ((ldsym->l_smtype & L_IMPORT) == 0) | |
4532 | ldsym->l_ifile = 0; | |
4533 | else | |
4534 | { | |
4535 | bfd *impbfd; | |
4536 | ||
4537 | if (h->root.type == bfd_link_hash_defined | |
4538 | || h->root.type == bfd_link_hash_defweak) | |
4539 | impbfd = h->root.u.def.section->owner; | |
4540 | else if (h->root.type == bfd_link_hash_undefined | |
4541 | || h->root.type == bfd_link_hash_undefweak) | |
4542 | impbfd = h->root.u.undef.abfd; | |
4543 | else | |
4544 | impbfd = NULL; | |
4545 | ||
4546 | if (impbfd == NULL) | |
4547 | ldsym->l_ifile = 0; | |
4548 | else | |
4549 | { | |
4550 | BFD_ASSERT (impbfd->xvec == finfo->output_bfd->xvec); | |
4551 | ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; | |
4552 | } | |
4553 | } | |
4554 | } | |
4555 | ||
4556 | ldsym->l_parm = 0; | |
4557 | ||
4558 | BFD_ASSERT (h->ldindx >= 0); | |
4559 | BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym)); | |
4560 | xcoff_swap_ldsym_out (finfo->output_bfd, ldsym, | |
4561 | finfo->ldsym + h->ldindx - 3); | |
4562 | h->ldsym = NULL; | |
c3dffbd7 ILT |
4563 | |
4564 | /* Fill in snentry now that we know the target_index. */ | |
4565 | if ((h->flags & XCOFF_ENTRY) != 0 | |
4566 | && (h->root.type == bfd_link_hash_defined | |
4567 | || h->root.type == bfd_link_hash_defweak)) | |
4568 | xcoff_data (output_bfd)->snentry = | |
4569 | h->root.u.def.section->output_section->target_index; | |
28a0c103 ILT |
4570 | } |
4571 | ||
aadf04f7 SS |
4572 | *indexp = -1; |
4573 | ||
4574 | skip = false; | |
4575 | require = false; | |
4576 | add = 1 + isym.n_numaux; | |
4577 | ||
4578 | /* If we are skipping this csect, we want to skip this symbol. */ | |
4579 | if (*csectpp == NULL) | |
4580 | skip = true; | |
4581 | ||
28a0c103 ILT |
4582 | /* If we garbage collected this csect, we want to skip this |
4583 | symbol. */ | |
4584 | if (! skip | |
4585 | && xcoff_hash_table (finfo->info)->gc | |
4586 | && ((*csectpp)->flags & SEC_MARK) == 0 | |
4587 | && *csectpp != bfd_abs_section_ptr) | |
4588 | skip = true; | |
4589 | ||
aadf04f7 SS |
4590 | /* An XCOFF linker always skips C_STAT symbols. */ |
4591 | if (! skip | |
4592 | && isymp->n_sclass == C_STAT) | |
4593 | skip = true; | |
4594 | ||
4595 | /* We skip all but the first TOC anchor. */ | |
4596 | if (! skip | |
4597 | && isymp->n_sclass == C_HIDEXT | |
4598 | && aux.x_csect.x_smclas == XMC_TC0) | |
4599 | { | |
4600 | if (finfo->toc_symindx != -1) | |
4601 | skip = true; | |
4602 | else | |
4603 | { | |
b5403ad7 ILT |
4604 | bfd_vma tocval, tocend; |
4605 | ||
4606 | tocval = ((*csectpp)->output_section->vma | |
4607 | + (*csectpp)->output_offset | |
4608 | + isym.n_value | |
4609 | - (*csectpp)->vma); | |
4610 | /* We want to find out if tocval is a good value to use | |
4611 | as the TOC anchor--that is, whether we can access all | |
4612 | of the TOC using a 16 bit offset from tocval. This | |
4613 | test assumes that the TOC comes at the end of the | |
4614 | output section, as it does in the default linker | |
f97fca78 ILT |
4615 | script. */ |
4616 | ||
b5403ad7 ILT |
4617 | tocend = ((*csectpp)->output_section->vma |
4618 | + (*csectpp)->output_section->_raw_size); | |
f97fca78 ILT |
4619 | |
4620 | if (tocval + 0x10000 < tocend) | |
4621 | { | |
4622 | (*_bfd_error_handler) | |
4623 | ("TOC overflow: 0x%lx > 0x10000; try -mminimal-toc when compiling", | |
4624 | (unsigned long) (tocend - tocval)); | |
4625 | bfd_set_error (bfd_error_file_too_big); | |
4626 | return false; | |
4627 | } | |
4628 | ||
b5403ad7 ILT |
4629 | if (tocval + 0x8000 < tocend) |
4630 | { | |
4631 | bfd_vma tocadd; | |
4632 | ||
4633 | tocadd = tocend - (tocval + 0x8000); | |
4634 | tocval += tocadd; | |
4635 | isym.n_value += tocadd; | |
4636 | } | |
4637 | ||
aadf04f7 | 4638 | finfo->toc_symindx = output_index; |
b5403ad7 | 4639 | xcoff_data (finfo->output_bfd)->toc = tocval; |
c3dffbd7 ILT |
4640 | xcoff_data (finfo->output_bfd)->sntoc = |
4641 | (*csectpp)->output_section->target_index; | |
aadf04f7 SS |
4642 | require = true; |
4643 | } | |
4644 | } | |
4645 | ||
4646 | /* If we are stripping all symbols, we want to skip this one. */ | |
4647 | if (! skip | |
4648 | && finfo->info->strip == strip_all) | |
4649 | skip = true; | |
4650 | ||
4651 | /* We can skip resolved external references. */ | |
4652 | if (! skip | |
4653 | && isym.n_sclass == C_EXT | |
4654 | && smtyp == XTY_ER | |
4655 | && (*sym_hash)->root.type != bfd_link_hash_undefined) | |
4656 | skip = true; | |
4657 | ||
28a0c103 ILT |
4658 | /* We can skip common symbols if they got defined somewhere |
4659 | else. */ | |
4660 | if (! skip | |
4661 | && isym.n_sclass == C_EXT | |
4662 | && smtyp == XTY_CM | |
1d04caa1 ILT |
4663 | && ((*sym_hash)->root.type != bfd_link_hash_common |
4664 | || (*sym_hash)->root.u.c.p->section != *csectpp) | |
4665 | && ((*sym_hash)->root.type != bfd_link_hash_defined | |
4666 | || (*sym_hash)->root.u.def.section != *csectpp)) | |
28a0c103 ILT |
4667 | skip = true; |
4668 | ||
aadf04f7 SS |
4669 | /* Skip local symbols if we are discarding them. */ |
4670 | if (! skip | |
4671 | && finfo->info->discard == discard_all | |
4672 | && isym.n_sclass != C_EXT | |
4673 | && (isym.n_sclass != C_HIDEXT | |
4674 | || smtyp != XTY_SD)) | |
4675 | skip = true; | |
4676 | ||
4677 | /* If we stripping debugging symbols, and this is a debugging | |
4678 | symbol, then skip it. */ | |
4679 | if (! skip | |
4680 | && finfo->info->strip == strip_debugger | |
4681 | && isym.n_scnum == N_DEBUG) | |
4682 | skip = true; | |
4683 | ||
4684 | /* If some symbols are stripped based on the name, work out the | |
4685 | name and decide whether to skip this symbol. We don't handle | |
4686 | this correctly for symbols whose names are in the .debug | |
4687 | section; to get it right we would need a new bfd_strtab_hash | |
4688 | function to return the string given the index. */ | |
4689 | if (! skip | |
4690 | && (finfo->info->strip == strip_some | |
4691 | || finfo->info->discard == discard_l) | |
4692 | && (debug_index == NULL || *debug_index == (unsigned long) -1)) | |
4693 | { | |
4694 | const char *name; | |
4695 | char buf[SYMNMLEN + 1]; | |
4696 | ||
4697 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); | |
4698 | if (name == NULL) | |
4699 | return false; | |
4700 | ||
4701 | if ((finfo->info->strip == strip_some | |
4702 | && (bfd_hash_lookup (finfo->info->keep_hash, name, false, | |
4703 | false) == NULL)) | |
4704 | || (finfo->info->discard == discard_l | |
4705 | && (isym.n_sclass != C_EXT | |
4706 | && (isym.n_sclass != C_HIDEXT | |
4707 | || smtyp != XTY_SD)) | |
e8c4696e | 4708 | && bfd_is_local_label_name (input_bfd, name))) |
aadf04f7 SS |
4709 | skip = true; |
4710 | } | |
4711 | ||
aadf04f7 SS |
4712 | /* We can not skip the first TOC anchor. */ |
4713 | if (skip | |
4714 | && require | |
4715 | && finfo->info->strip != strip_all) | |
4716 | skip = false; | |
4717 | ||
4718 | /* We now know whether we are to skip this symbol or not. */ | |
4719 | if (! skip) | |
4720 | { | |
4721 | /* Adjust the symbol in order to output it. */ | |
4722 | ||
4723 | if (isym._n._n_n._n_zeroes == 0 | |
4724 | && isym._n._n_n._n_offset != 0) | |
4725 | { | |
4726 | /* This symbol has a long name. Enter it in the string | |
4727 | table we are building. If *debug_index != -1, the | |
4728 | name has already been entered in the .debug section. */ | |
4729 | if (debug_index != NULL && *debug_index != (unsigned long) -1) | |
4730 | isym._n._n_n._n_offset = *debug_index; | |
4731 | else | |
4732 | { | |
4733 | const char *name; | |
4734 | bfd_size_type indx; | |
4735 | ||
4736 | name = _bfd_coff_internal_syment_name (input_bfd, &isym, | |
4737 | (char *) NULL); | |
4738 | if (name == NULL) | |
4739 | return false; | |
4740 | indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); | |
4741 | if (indx == (bfd_size_type) -1) | |
4742 | return false; | |
4743 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
4744 | } | |
4745 | } | |
4746 | ||
867d923d ILT |
4747 | if (isym.n_sclass != C_BSTAT |
4748 | && isym.n_sclass != C_ESTAT | |
f630a0a4 | 4749 | && isym.n_sclass != C_DECL |
867d923d | 4750 | && isym.n_scnum > 0) |
aadf04f7 SS |
4751 | { |
4752 | isym.n_scnum = (*csectpp)->output_section->target_index; | |
4753 | isym.n_value += ((*csectpp)->output_section->vma | |
4754 | + (*csectpp)->output_offset | |
4755 | - (*csectpp)->vma); | |
4756 | } | |
4757 | ||
4758 | /* The value of a C_FILE symbol is the symbol index of the | |
4759 | next C_FILE symbol. The value of the last C_FILE symbol | |
4760 | is -1. We try to get this right, below, just before we | |
4761 | write the symbols out, but in the general case we may | |
4762 | have to write the symbol out twice. */ | |
4763 | if (isym.n_sclass == C_FILE) | |
4764 | { | |
4765 | if (finfo->last_file_index != -1 | |
4766 | && finfo->last_file.n_value != (long) output_index) | |
4767 | { | |
4768 | /* We must correct the value of the last C_FILE entry. */ | |
4769 | finfo->last_file.n_value = output_index; | |
4770 | if ((bfd_size_type) finfo->last_file_index >= syment_base) | |
4771 | { | |
4772 | /* The last C_FILE symbol is in this input file. */ | |
4773 | bfd_coff_swap_sym_out (output_bfd, | |
4774 | (PTR) &finfo->last_file, | |
4775 | (PTR) (finfo->outsyms | |
4776 | + ((finfo->last_file_index | |
4777 | - syment_base) | |
4778 | * osymesz))); | |
4779 | } | |
4780 | else | |
4781 | { | |
4782 | /* We have already written out the last C_FILE | |
4783 | symbol. We need to write it out again. We | |
4784 | borrow *outsym temporarily. */ | |
4785 | bfd_coff_swap_sym_out (output_bfd, | |
4786 | (PTR) &finfo->last_file, | |
4787 | (PTR) outsym); | |
4788 | if (bfd_seek (output_bfd, | |
4789 | (obj_sym_filepos (output_bfd) | |
4790 | + finfo->last_file_index * osymesz), | |
4791 | SEEK_SET) != 0 | |
4792 | || (bfd_write (outsym, osymesz, 1, output_bfd) | |
4793 | != osymesz)) | |
4794 | return false; | |
4795 | } | |
4796 | } | |
4797 | ||
4798 | finfo->last_file_index = output_index; | |
4799 | finfo->last_file = isym; | |
4800 | } | |
4801 | ||
f630a0a4 ILT |
4802 | /* The value of a C_BINCL or C_EINCL symbol is a file offset |
4803 | into the line numbers. We update the symbol values when | |
4804 | we handle the line numbers. */ | |
4805 | if (isym.n_sclass == C_BINCL | |
4806 | || isym.n_sclass == C_EINCL) | |
4807 | { | |
4808 | isym.n_value = finfo->line_filepos; | |
4809 | ++incls; | |
4810 | } | |
4811 | ||
aadf04f7 SS |
4812 | /* Output the symbol. */ |
4813 | ||
4814 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
4815 | ||
4816 | *indexp = output_index; | |
4817 | ||
4818 | if (isym.n_sclass == C_EXT) | |
4819 | { | |
4820 | long indx; | |
4821 | struct xcoff_link_hash_entry *h; | |
4822 | ||
4823 | indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) | |
4824 | / isymesz); | |
4825 | h = obj_xcoff_sym_hashes (input_bfd)[indx]; | |
4826 | BFD_ASSERT (h != NULL); | |
4827 | h->indx = output_index; | |
4828 | } | |
4829 | ||
230de6b8 ILT |
4830 | /* If this is a symbol in the TOC which we may have merged |
4831 | (class XMC_TC), remember the symbol index of the TOC | |
4832 | symbol. */ | |
4833 | if (isym.n_sclass == C_HIDEXT | |
4834 | && aux.x_csect.x_smclas == XMC_TC | |
4835 | && *sym_hash != NULL) | |
4836 | { | |
4837 | BFD_ASSERT (((*sym_hash)->flags & XCOFF_SET_TOC) == 0); | |
4838 | BFD_ASSERT ((*sym_hash)->toc_section != NULL); | |
4839 | (*sym_hash)->u.toc_indx = output_index; | |
4840 | } | |
4841 | ||
aadf04f7 SS |
4842 | output_index += add; |
4843 | outsym += add * osymesz; | |
4844 | } | |
4845 | ||
4846 | esym += add * isymesz; | |
4847 | isymp += add; | |
4848 | csectpp += add; | |
4849 | sym_hash += add; | |
4850 | if (debug_index != NULL) | |
4851 | debug_index += add; | |
4852 | ++indexp; | |
4853 | for (--add; add > 0; --add) | |
4854 | *indexp++ = -1; | |
4855 | } | |
4856 | ||
867d923d ILT |
4857 | /* Fix up the aux entries and the C_BSTAT symbols. This must be |
4858 | done in a separate pass, because we don't know the correct symbol | |
4859 | indices until we have already decided which symbols we are going | |
4860 | to keep. */ | |
aadf04f7 SS |
4861 | |
4862 | esym = (bfd_byte *) obj_coff_external_syms (input_bfd); | |
4863 | esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; | |
4864 | isymp = finfo->internal_syms; | |
4865 | indexp = finfo->sym_indices; | |
28a0c103 | 4866 | csectpp = xcoff_data (input_bfd)->csects; |
aadf04f7 SS |
4867 | outsym = finfo->outsyms; |
4868 | while (esym < esym_end) | |
4869 | { | |
4870 | int add; | |
4871 | ||
4872 | add = 1 + isymp->n_numaux; | |
4873 | ||
4874 | if (*indexp < 0) | |
4875 | esym += add * isymesz; | |
4876 | else | |
4877 | { | |
4878 | int i; | |
4879 | ||
867d923d ILT |
4880 | if (isymp->n_sclass == C_BSTAT) |
4881 | { | |
f630a0a4 | 4882 | struct internal_syment isym; |
867d923d ILT |
4883 | unsigned long indx; |
4884 | ||
4885 | /* The value of a C_BSTAT symbol is the symbol table | |
4886 | index of the containing csect. */ | |
f630a0a4 ILT |
4887 | bfd_coff_swap_sym_in (output_bfd, (PTR) outsym, (PTR) &isym); |
4888 | indx = isym.n_value; | |
867d923d ILT |
4889 | if (indx < obj_raw_syment_count (input_bfd)) |
4890 | { | |
4891 | long symindx; | |
4892 | ||
4893 | symindx = finfo->sym_indices[indx]; | |
4894 | if (symindx < 0) | |
f630a0a4 | 4895 | isym.n_value = 0; |
867d923d | 4896 | else |
f630a0a4 ILT |
4897 | isym.n_value = symindx; |
4898 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, | |
867d923d ILT |
4899 | (PTR) outsym); |
4900 | } | |
4901 | } | |
4902 | ||
aadf04f7 SS |
4903 | esym += isymesz; |
4904 | outsym += osymesz; | |
4905 | ||
4906 | for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) | |
4907 | { | |
4908 | union internal_auxent aux; | |
4909 | ||
4910 | bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, | |
4911 | isymp->n_sclass, i, isymp->n_numaux, | |
4912 | (PTR) &aux); | |
4913 | ||
4914 | if (isymp->n_sclass == C_FILE) | |
4915 | { | |
4916 | /* This is the file name (or some comment put in by | |
4917 | the compiler). If it is long, we must put it in | |
4918 | the string table. */ | |
4919 | if (aux.x_file.x_n.x_zeroes == 0 | |
4920 | && aux.x_file.x_n.x_offset != 0) | |
4921 | { | |
4922 | const char *filename; | |
4923 | bfd_size_type indx; | |
4924 | ||
4925 | BFD_ASSERT (aux.x_file.x_n.x_offset | |
4926 | >= STRING_SIZE_SIZE); | |
4927 | if (strings == NULL) | |
4928 | { | |
4929 | strings = _bfd_coff_read_string_table (input_bfd); | |
4930 | if (strings == NULL) | |
4931 | return false; | |
4932 | } | |
4933 | filename = strings + aux.x_file.x_n.x_offset; | |
4934 | indx = _bfd_stringtab_add (finfo->strtab, filename, | |
4935 | hash, copy); | |
4936 | if (indx == (bfd_size_type) -1) | |
4937 | return false; | |
4938 | aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; | |
4939 | } | |
4940 | } | |
4941 | else if ((isymp->n_sclass == C_EXT | |
4942 | || isymp->n_sclass == C_HIDEXT) | |
4943 | && i + 1 == isymp->n_numaux) | |
4944 | { | |
4945 | /* We don't support type checking. I don't know if | |
4946 | anybody does. */ | |
4947 | aux.x_csect.x_parmhash = 0; | |
4948 | /* I don't think anybody uses these fields, but we'd | |
4949 | better clobber them just in case. */ | |
4950 | aux.x_csect.x_stab = 0; | |
4951 | aux.x_csect.x_snstab = 0; | |
4952 | if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD) | |
4953 | { | |
4954 | unsigned long indx; | |
4955 | ||
4956 | indx = aux.x_csect.x_scnlen.l; | |
4957 | if (indx < obj_raw_syment_count (input_bfd)) | |
4958 | { | |
4959 | long symindx; | |
4960 | ||
4961 | symindx = finfo->sym_indices[indx]; | |
4962 | if (symindx < 0) | |
4963 | aux.x_sym.x_tagndx.l = 0; | |
4964 | else | |
4965 | aux.x_sym.x_tagndx.l = symindx; | |
4966 | } | |
4967 | } | |
4968 | } | |
4969 | else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) | |
4970 | { | |
4971 | unsigned long indx; | |
4972 | ||
4973 | if (ISFCN (isymp->n_type) | |
4974 | || ISTAG (isymp->n_sclass) | |
f5d65485 ILT |
4975 | || isymp->n_sclass == C_BLOCK |
4976 | || isymp->n_sclass == C_FCN) | |
aadf04f7 SS |
4977 | { |
4978 | indx = aux.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
4979 | if (indx > 0 | |
4980 | && indx < obj_raw_syment_count (input_bfd)) | |
4981 | { | |
4982 | /* We look forward through the symbol for | |
4983 | the index of the next symbol we are going | |
4984 | to include. I don't know if this is | |
4985 | entirely right. */ | |
4986 | while (finfo->sym_indices[indx] < 0 | |
4987 | && indx < obj_raw_syment_count (input_bfd)) | |
4988 | ++indx; | |
4989 | if (indx >= obj_raw_syment_count (input_bfd)) | |
4990 | indx = output_index; | |
4991 | else | |
4992 | indx = finfo->sym_indices[indx]; | |
4993 | aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx; | |
4994 | } | |
4995 | } | |
4996 | ||
4997 | indx = aux.x_sym.x_tagndx.l; | |
4998 | if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) | |
4999 | { | |
5000 | long symindx; | |
5001 | ||
5002 | symindx = finfo->sym_indices[indx]; | |
5003 | if (symindx < 0) | |
5004 | aux.x_sym.x_tagndx.l = 0; | |
5005 | else | |
5006 | aux.x_sym.x_tagndx.l = symindx; | |
5007 | } | |
5008 | } | |
5009 | ||
28a0c103 ILT |
5010 | /* Copy over the line numbers, unless we are stripping |
5011 | them. We do this on a symbol by symbol basis in | |
5012 | order to more easily handle garbage collection. */ | |
5013 | if ((isymp->n_sclass == C_EXT | |
5014 | || isymp->n_sclass == C_HIDEXT) | |
5015 | && i == 0 | |
5016 | && isymp->n_numaux > 1 | |
5017 | && ISFCN (isymp->n_type) | |
5018 | && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) | |
aadf04f7 | 5019 | { |
28a0c103 ILT |
5020 | if (finfo->info->strip != strip_none |
5021 | && finfo->info->strip != strip_some) | |
5022 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; | |
aadf04f7 SS |
5023 | else |
5024 | { | |
28a0c103 | 5025 | asection *enclosing; |
b73322d9 | 5026 | unsigned int enc_count; |
28a0c103 ILT |
5027 | bfd_size_type linoff; |
5028 | struct internal_lineno lin; | |
5029 | ||
5030 | o = *csectpp; | |
5031 | enclosing = xcoff_section_data (abfd, o)->enclosing; | |
b73322d9 ILT |
5032 | enc_count = xcoff_section_data (abfd, o)->lineno_count; |
5033 | if (oline != enclosing) | |
5034 | { | |
5035 | if (bfd_seek (input_bfd, | |
5036 | enclosing->line_filepos, | |
5037 | SEEK_SET) != 0 | |
5038 | || (bfd_read (finfo->linenos, linesz, | |
5039 | enc_count, input_bfd) | |
5040 | != linesz * enc_count)) | |
5041 | return false; | |
5042 | oline = enclosing; | |
5043 | } | |
5044 | ||
28a0c103 ILT |
5045 | linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr |
5046 | - enclosing->line_filepos); | |
5047 | ||
28a0c103 | 5048 | bfd_coff_swap_lineno_in (input_bfd, |
b73322d9 | 5049 | (PTR) (finfo->linenos + linoff), |
28a0c103 ILT |
5050 | (PTR) &lin); |
5051 | if (lin.l_lnno != 0 | |
5052 | || ((bfd_size_type) lin.l_addr.l_symndx | |
5053 | != ((esym | |
5054 | - isymesz | |
5055 | - ((bfd_byte *) | |
5056 | obj_coff_external_syms (input_bfd))) | |
5057 | / isymesz))) | |
5058 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; | |
5059 | else | |
aadf04f7 | 5060 | { |
28a0c103 ILT |
5061 | bfd_byte *linpend, *linp; |
5062 | bfd_vma offset; | |
5063 | bfd_size_type count; | |
5064 | ||
5065 | lin.l_addr.l_symndx = *indexp; | |
5066 | bfd_coff_swap_lineno_out (output_bfd, (PTR) &lin, | |
b73322d9 ILT |
5067 | (PTR) (finfo->linenos |
5068 | + linoff)); | |
28a0c103 ILT |
5069 | |
5070 | linpend = (finfo->linenos | |
b73322d9 | 5071 | + enc_count * linesz); |
28a0c103 ILT |
5072 | offset = (o->output_section->vma |
5073 | + o->output_offset | |
5074 | - o->vma); | |
b73322d9 | 5075 | for (linp = finfo->linenos + linoff + linesz; |
28a0c103 ILT |
5076 | linp < linpend; |
5077 | linp += linesz) | |
5078 | { | |
5079 | bfd_coff_swap_lineno_in (input_bfd, (PTR) linp, | |
5080 | (PTR) &lin); | |
5081 | if (lin.l_lnno == 0) | |
5082 | break; | |
5083 | lin.l_addr.l_paddr += offset; | |
5084 | bfd_coff_swap_lineno_out (output_bfd, | |
5085 | (PTR) &lin, | |
5086 | (PTR) linp); | |
5087 | } | |
5088 | ||
b73322d9 | 5089 | count = (linp - (finfo->linenos + linoff)) / linesz; |
28a0c103 ILT |
5090 | |
5091 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
aadf04f7 | 5092 | (o->output_section->line_filepos |
28a0c103 ILT |
5093 | + o->output_section->lineno_count * linesz); |
5094 | ||
5095 | if (bfd_seek (output_bfd, | |
5096 | aux.x_sym.x_fcnary.x_fcn.x_lnnoptr, | |
5097 | SEEK_SET) != 0 | |
b73322d9 ILT |
5098 | || (bfd_write (finfo->linenos + linoff, |
5099 | linesz, count, output_bfd) | |
28a0c103 ILT |
5100 | != linesz * count)) |
5101 | return false; | |
5102 | ||
5103 | o->output_section->lineno_count += count; | |
f630a0a4 ILT |
5104 | |
5105 | if (incls > 0) | |
5106 | { | |
5107 | struct internal_syment *iisp, *iispend; | |
5108 | long *iindp; | |
5109 | bfd_byte *oos; | |
c3dffbd7 | 5110 | int iiadd; |
f630a0a4 ILT |
5111 | |
5112 | /* Update any C_BINCL or C_EINCL symbols | |
5113 | that refer to a line number in the | |
5114 | range we just output. */ | |
5115 | iisp = finfo->internal_syms; | |
5116 | iispend = (iisp | |
5117 | + obj_raw_syment_count (input_bfd)); | |
5118 | iindp = finfo->sym_indices; | |
5119 | oos = finfo->outsyms; | |
5120 | while (iisp < iispend) | |
5121 | { | |
c3dffbd7 ILT |
5122 | if (*iindp >= 0 |
5123 | && (iisp->n_sclass == C_BINCL | |
5124 | || iisp->n_sclass == C_EINCL) | |
f630a0a4 ILT |
5125 | && ((bfd_size_type) iisp->n_value |
5126 | >= enclosing->line_filepos + linoff) | |
5127 | && ((bfd_size_type) iisp->n_value | |
5128 | < (enclosing->line_filepos | |
5129 | + enc_count * linesz))) | |
5130 | { | |
5131 | struct internal_syment iis; | |
5132 | ||
5133 | bfd_coff_swap_sym_in (output_bfd, | |
5134 | (PTR) oos, | |
5135 | (PTR) &iis); | |
5136 | iis.n_value = | |
5137 | (iisp->n_value | |
5138 | - enclosing->line_filepos | |
5139 | - linoff | |
5140 | + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr); | |
5141 | bfd_coff_swap_sym_out (output_bfd, | |
5142 | (PTR) &iis, | |
5143 | (PTR) oos); | |
5144 | --incls; | |
5145 | } | |
5146 | ||
c3dffbd7 ILT |
5147 | iiadd = 1 + iisp->n_numaux; |
5148 | if (*iindp >= 0) | |
5149 | oos += iiadd * osymesz; | |
5150 | iisp += iiadd; | |
5151 | iindp += iiadd; | |
f630a0a4 ILT |
5152 | } |
5153 | } | |
aadf04f7 SS |
5154 | } |
5155 | } | |
aadf04f7 SS |
5156 | } |
5157 | ||
28a0c103 ILT |
5158 | bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, isymp->n_type, |
5159 | isymp->n_sclass, i, isymp->n_numaux, | |
5160 | (PTR) outsym); | |
5161 | outsym += osymesz; | |
5162 | esym += isymesz; | |
aadf04f7 | 5163 | } |
aadf04f7 | 5164 | } |
28a0c103 ILT |
5165 | |
5166 | indexp += add; | |
5167 | isymp += add; | |
5168 | csectpp += add; | |
aadf04f7 SS |
5169 | } |
5170 | ||
5171 | /* If we swapped out a C_FILE symbol, guess that the next C_FILE | |
5172 | symbol will be the first symbol in the next input file. In the | |
5173 | normal case, this will save us from writing out the C_FILE symbol | |
5174 | again. */ | |
5175 | if (finfo->last_file_index != -1 | |
5176 | && (bfd_size_type) finfo->last_file_index >= syment_base) | |
5177 | { | |
5178 | finfo->last_file.n_value = output_index; | |
5179 | bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, | |
5180 | (PTR) (finfo->outsyms | |
5181 | + ((finfo->last_file_index - syment_base) | |
5182 | * osymesz))); | |
5183 | } | |
5184 | ||
5185 | /* Write the modified symbols to the output file. */ | |
5186 | if (outsym > finfo->outsyms) | |
5187 | { | |
5188 | if (bfd_seek (output_bfd, | |
5189 | obj_sym_filepos (output_bfd) + syment_base * osymesz, | |
5190 | SEEK_SET) != 0 | |
5191 | || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, | |
5192 | output_bfd) | |
5193 | != (bfd_size_type) (outsym - finfo->outsyms))) | |
5194 | return false; | |
5195 | ||
5196 | BFD_ASSERT ((obj_raw_syment_count (output_bfd) | |
5197 | + (outsym - finfo->outsyms) / osymesz) | |
5198 | == output_index); | |
5199 | ||
5200 | obj_raw_syment_count (output_bfd) = output_index; | |
5201 | } | |
5202 | ||
5203 | /* Don't let the linker relocation routines discard the symbols. */ | |
5204 | keep_syms = obj_coff_keep_syms (input_bfd); | |
5205 | obj_coff_keep_syms (input_bfd) = true; | |
5206 | ||
5207 | /* Relocate the contents of each section. */ | |
5208 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
5209 | { | |
5210 | bfd_byte *contents; | |
5211 | ||
ff0e4a93 | 5212 | if (! o->linker_mark) |
7ec49f91 ILT |
5213 | { |
5214 | /* This section was omitted from the link. */ | |
5215 | continue; | |
5216 | } | |
5217 | ||
aadf04f7 | 5218 | if ((o->flags & SEC_HAS_CONTENTS) == 0 |
28a0c103 ILT |
5219 | || o->_raw_size == 0 |
5220 | || (o->flags & SEC_IN_MEMORY) != 0) | |
aadf04f7 SS |
5221 | continue; |
5222 | ||
5223 | /* We have set filepos correctly for the sections we created to | |
5224 | represent csects, so bfd_get_section_contents should work. */ | |
5225 | if (coff_section_data (input_bfd, o) != NULL | |
5226 | && coff_section_data (input_bfd, o)->contents != NULL) | |
5227 | contents = coff_section_data (input_bfd, o)->contents; | |
5228 | else | |
5229 | { | |
5230 | if (! bfd_get_section_contents (input_bfd, o, finfo->contents, | |
5231 | (file_ptr) 0, o->_raw_size)) | |
5232 | return false; | |
5233 | contents = finfo->contents; | |
5234 | } | |
5235 | ||
5236 | if ((o->flags & SEC_RELOC) != 0) | |
5237 | { | |
5238 | int target_index; | |
5239 | struct internal_reloc *internal_relocs; | |
5240 | struct internal_reloc *irel; | |
5241 | bfd_vma offset; | |
5242 | struct internal_reloc *irelend; | |
5243 | struct xcoff_link_hash_entry **rel_hash; | |
28a0c103 | 5244 | long r_symndx; |
aadf04f7 | 5245 | |
28a0c103 | 5246 | /* Read in the relocs. */ |
aadf04f7 | 5247 | target_index = o->output_section->target_index; |
28a0c103 | 5248 | internal_relocs = (xcoff_read_internal_relocs |
aadf04f7 SS |
5249 | (input_bfd, o, false, finfo->external_relocs, |
5250 | true, | |
5251 | (finfo->section_info[target_index].relocs | |
5252 | + o->output_section->reloc_count))); | |
5253 | if (internal_relocs == NULL) | |
5254 | return false; | |
5255 | ||
5256 | /* Call processor specific code to relocate the section | |
5257 | contents. */ | |
5258 | if (! bfd_coff_relocate_section (output_bfd, finfo->info, | |
5259 | input_bfd, o, | |
5260 | contents, | |
5261 | internal_relocs, | |
5262 | finfo->internal_syms, | |
5263 | xcoff_data (input_bfd)->csects)) | |
5264 | return false; | |
5265 | ||
5266 | offset = o->output_section->vma + o->output_offset - o->vma; | |
5267 | irel = internal_relocs; | |
5268 | irelend = irel + o->reloc_count; | |
5269 | rel_hash = (finfo->section_info[target_index].rel_hashes | |
5270 | + o->output_section->reloc_count); | |
5271 | for (; irel < irelend; irel++, rel_hash++) | |
5272 | { | |
28a0c103 ILT |
5273 | struct xcoff_link_hash_entry *h = NULL; |
5274 | struct internal_ldrel ldrel; | |
b2a05baf | 5275 | boolean quiet; |
aadf04f7 SS |
5276 | |
5277 | *rel_hash = NULL; | |
5278 | ||
5279 | /* Adjust the reloc address and symbol index. */ | |
5280 | ||
5281 | irel->r_vaddr += offset; | |
5282 | ||
28a0c103 | 5283 | r_symndx = irel->r_symndx; |
aadf04f7 | 5284 | |
28a0c103 | 5285 | if (r_symndx != -1) |
aadf04f7 | 5286 | { |
28a0c103 | 5287 | h = obj_xcoff_sym_hashes (input_bfd)[r_symndx]; |
a8a3d83a ILT |
5288 | if (h != NULL |
5289 | && h->smclas != XMC_TD | |
5290 | && (irel->r_type == R_TOC | |
5291 | || irel->r_type == R_GL | |
5292 | || irel->r_type == R_TCL | |
5293 | || irel->r_type == R_TRL | |
5294 | || irel->r_type == R_TRLA)) | |
230de6b8 ILT |
5295 | { |
5296 | /* This is a TOC relative reloc with a symbol | |
5297 | attached. The symbol should be the one which | |
5298 | this reloc is for. We want to make this | |
5299 | reloc against the TOC address of the symbol, | |
5300 | not the symbol itself. */ | |
5301 | BFD_ASSERT (h->toc_section != NULL); | |
5302 | BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); | |
2d7de17d ILT |
5303 | if (h->u.toc_indx != -1) |
5304 | irel->r_symndx = h->u.toc_indx; | |
5305 | else | |
230de6b8 | 5306 | { |
2d7de17d ILT |
5307 | struct xcoff_toc_rel_hash *n; |
5308 | struct xcoff_link_section_info *si; | |
5309 | ||
5310 | n = ((struct xcoff_toc_rel_hash *) | |
5311 | bfd_alloc (finfo->output_bfd, | |
5312 | sizeof (struct xcoff_toc_rel_hash))); | |
5313 | if (n == NULL) | |
a9713b91 | 5314 | return false; |
2d7de17d ILT |
5315 | si = finfo->section_info + target_index; |
5316 | n->next = si->toc_rel_hashes; | |
5317 | n->h = h; | |
5318 | n->rel = irel; | |
5319 | si->toc_rel_hashes = n; | |
230de6b8 | 5320 | } |
230de6b8 ILT |
5321 | } |
5322 | else if (h != NULL) | |
28a0c103 ILT |
5323 | { |
5324 | /* This is a global symbol. */ | |
5325 | if (h->indx >= 0) | |
5326 | irel->r_symndx = h->indx; | |
5327 | else | |
5328 | { | |
5329 | /* This symbol is being written at the end | |
5330 | of the file, and we do not yet know the | |
5331 | symbol index. We save the pointer to the | |
5332 | hash table entry in the rel_hash list. | |
5333 | We set the indx field to -2 to indicate | |
5334 | that this symbol must not be stripped. */ | |
5335 | *rel_hash = h; | |
5336 | h->indx = -2; | |
5337 | } | |
5338 | } | |
aadf04f7 SS |
5339 | else |
5340 | { | |
28a0c103 ILT |
5341 | long indx; |
5342 | ||
5343 | indx = finfo->sym_indices[r_symndx]; | |
5344 | ||
5345 | if (indx == -1) | |
5346 | { | |
5347 | struct internal_syment *is; | |
5348 | ||
5349 | /* Relocations against a TC0 TOC anchor are | |
5350 | automatically transformed to be against | |
5351 | the TOC anchor in the output file. */ | |
5352 | is = finfo->internal_syms + r_symndx; | |
5353 | if (is->n_sclass == C_HIDEXT | |
5354 | && is->n_numaux > 0) | |
5355 | { | |
5356 | PTR auxptr; | |
5357 | union internal_auxent aux; | |
5358 | ||
5359 | auxptr = ((PTR) | |
5360 | (((bfd_byte *) | |
5361 | obj_coff_external_syms (input_bfd)) | |
5362 | + ((r_symndx + is->n_numaux) | |
5363 | * isymesz))); | |
5364 | bfd_coff_swap_aux_in (input_bfd, auxptr, | |
5365 | is->n_type, is->n_sclass, | |
5366 | is->n_numaux - 1, | |
5367 | is->n_numaux, | |
5368 | (PTR) &aux); | |
5369 | if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD | |
5370 | && aux.x_csect.x_smclas == XMC_TC0) | |
5371 | indx = finfo->toc_symindx; | |
5372 | } | |
5373 | } | |
5374 | ||
5375 | if (indx != -1) | |
5376 | irel->r_symndx = indx; | |
5377 | else | |
5378 | { | |
5379 | struct internal_syment *is; | |
5380 | const char *name; | |
5381 | char buf[SYMNMLEN + 1]; | |
5382 | ||
5383 | /* This reloc is against a symbol we are | |
5384 | stripping. It would be possible to handle | |
5385 | this case, but I don't think it's worth it. */ | |
5386 | is = finfo->internal_syms + r_symndx; | |
5387 | ||
5388 | name = (_bfd_coff_internal_syment_name | |
5389 | (input_bfd, is, buf)); | |
5390 | if (name == NULL) | |
5391 | return false; | |
5392 | ||
5393 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5394 | (finfo->info, name, input_bfd, o, | |
5395 | irel->r_vaddr))) | |
5396 | return false; | |
5397 | } | |
aadf04f7 SS |
5398 | } |
5399 | } | |
28a0c103 | 5400 | |
b2a05baf | 5401 | quiet = false; |
28a0c103 | 5402 | switch (irel->r_type) |
aadf04f7 | 5403 | { |
28a0c103 | 5404 | default: |
867d923d ILT |
5405 | if (h == NULL |
5406 | || h->root.type == bfd_link_hash_defined | |
5407 | || h->root.type == bfd_link_hash_defweak | |
5408 | || h->root.type == bfd_link_hash_common) | |
5409 | break; | |
5410 | /* Fall through. */ | |
28a0c103 ILT |
5411 | case R_POS: |
5412 | case R_NEG: | |
5413 | case R_RL: | |
5414 | case R_RLA: | |
5415 | /* This reloc needs to be copied into the .loader | |
5416 | section. */ | |
5417 | ldrel.l_vaddr = irel->r_vaddr; | |
5418 | if (r_symndx == -1) | |
5419 | ldrel.l_symndx = -1; | |
867d923d ILT |
5420 | else if (h == NULL |
5421 | || (h->root.type == bfd_link_hash_defined | |
5422 | || h->root.type == bfd_link_hash_defweak | |
5423 | || h->root.type == bfd_link_hash_common)) | |
28a0c103 ILT |
5424 | { |
5425 | asection *sec; | |
aadf04f7 | 5426 | |
867d923d ILT |
5427 | if (h == NULL) |
5428 | sec = xcoff_data (input_bfd)->csects[r_symndx]; | |
5429 | else if (h->root.type == bfd_link_hash_common) | |
5430 | sec = h->root.u.c.p->section; | |
28a0c103 | 5431 | else |
867d923d ILT |
5432 | sec = h->root.u.def.section; |
5433 | sec = sec->output_section; | |
aadf04f7 | 5434 | |
867d923d | 5435 | if (strcmp (sec->name, ".text") == 0) |
28a0c103 | 5436 | ldrel.l_symndx = 0; |
867d923d | 5437 | else if (strcmp (sec->name, ".data") == 0) |
28a0c103 | 5438 | ldrel.l_symndx = 1; |
867d923d | 5439 | else if (strcmp (sec->name, ".bss") == 0) |
28a0c103 | 5440 | ldrel.l_symndx = 2; |
867d923d ILT |
5441 | else |
5442 | { | |
5443 | (*_bfd_error_handler) | |
5444 | ("%s: loader reloc in unrecognized section `%s'", | |
5445 | bfd_get_filename (input_bfd), | |
5446 | sec->name); | |
5447 | bfd_set_error (bfd_error_nonrepresentable_section); | |
5448 | return false; | |
5449 | } | |
28a0c103 ILT |
5450 | } |
5451 | else | |
aadf04f7 | 5452 | { |
b2a05baf ILT |
5453 | if (! finfo->info->relocateable |
5454 | && (h->flags & XCOFF_DEF_DYNAMIC) == 0 | |
5455 | && (h->flags & XCOFF_IMPORT) == 0) | |
5456 | { | |
5457 | /* We already called the undefined_symbol | |
5458 | callback for this relocation, in | |
5459 | _bfd_ppc_xcoff_relocate_section. Don't | |
5460 | issue any more warnings. */ | |
5461 | quiet = true; | |
5462 | } | |
5463 | if (h->ldindx < 0 && ! quiet) | |
aadf04f7 | 5464 | { |
28a0c103 ILT |
5465 | (*_bfd_error_handler) |
5466 | ("%s: `%s' in loader reloc but not loader sym", | |
5467 | bfd_get_filename (input_bfd), | |
5468 | h->root.root.string); | |
5469 | bfd_set_error (bfd_error_bad_value); | |
5470 | return false; | |
aadf04f7 | 5471 | } |
28a0c103 | 5472 | ldrel.l_symndx = h->ldindx; |
aadf04f7 | 5473 | } |
28a0c103 ILT |
5474 | ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; |
5475 | ldrel.l_rsecnm = o->output_section->target_index; | |
5476 | if (xcoff_hash_table (finfo->info)->textro | |
b2a05baf ILT |
5477 | && strcmp (o->output_section->name, ".text") == 0 |
5478 | && ! quiet) | |
aadf04f7 | 5479 | { |
28a0c103 ILT |
5480 | (*_bfd_error_handler) |
5481 | ("%s: loader reloc in read-only section %s", | |
5482 | bfd_get_filename (input_bfd), | |
5483 | bfd_get_section_name (finfo->output_bfd, | |
5484 | o->output_section)); | |
5485 | bfd_set_error (bfd_error_invalid_operation); | |
5486 | return false; | |
aadf04f7 | 5487 | } |
28a0c103 ILT |
5488 | xcoff_swap_ldrel_out (output_bfd, &ldrel, |
5489 | finfo->ldrel); | |
5490 | BFD_ASSERT (sizeof (struct external_ldrel) == LDRELSZ); | |
5491 | ++finfo->ldrel; | |
867d923d ILT |
5492 | break; |
5493 | ||
5494 | case R_TOC: | |
5495 | case R_GL: | |
5496 | case R_TCL: | |
5497 | case R_TRL: | |
5498 | case R_TRLA: | |
5499 | /* We should never need a .loader reloc for a TOC | |
5500 | relative reloc. */ | |
5501 | break; | |
aadf04f7 SS |
5502 | } |
5503 | } | |
5504 | ||
5505 | o->output_section->reloc_count += o->reloc_count; | |
5506 | } | |
5507 | ||
5508 | /* Write out the modified section contents. */ | |
5509 | if (! bfd_set_section_contents (output_bfd, o->output_section, | |
5510 | contents, o->output_offset, | |
5511 | (o->_cooked_size != 0 | |
5512 | ? o->_cooked_size | |
5513 | : o->_raw_size))) | |
5514 | return false; | |
5515 | } | |
5516 | ||
5517 | obj_coff_keep_syms (input_bfd) = keep_syms; | |
5518 | ||
5519 | if (! finfo->info->keep_memory) | |
5520 | { | |
5521 | if (! _bfd_coff_free_symbols (input_bfd)) | |
5522 | return false; | |
5523 | } | |
5524 | ||
5525 | return true; | |
5526 | } | |
5527 | ||
28a0c103 ILT |
5528 | #undef N_TMASK |
5529 | #undef N_BTSHFT | |
5530 | ||
aadf04f7 SS |
5531 | /* Write out a non-XCOFF global symbol. */ |
5532 | ||
5533 | static boolean | |
5534 | xcoff_write_global_symbol (h, p) | |
5535 | struct xcoff_link_hash_entry *h; | |
5536 | PTR p; | |
5537 | { | |
5538 | struct xcoff_final_link_info *finfo = (struct xcoff_final_link_info *) p; | |
5539 | bfd *output_bfd; | |
5540 | bfd_byte *outsym; | |
5541 | struct internal_syment isym; | |
5542 | union internal_auxent aux; | |
5543 | ||
28a0c103 | 5544 | output_bfd = finfo->output_bfd; |
e8c4696e | 5545 | outsym = finfo->outsyms; |
28a0c103 ILT |
5546 | |
5547 | /* If this symbol was garbage collected, just skip it. */ | |
5548 | if (xcoff_hash_table (finfo->info)->gc | |
5549 | && (h->flags & XCOFF_MARK) == 0) | |
5550 | return true; | |
5551 | ||
5552 | /* If we need a .loader section entry, write it out. */ | |
5553 | if (h->ldsym != NULL) | |
5554 | { | |
5555 | struct internal_ldsym *ldsym; | |
5556 | bfd *impbfd; | |
5557 | ||
5558 | ldsym = h->ldsym; | |
5559 | ||
5560 | if (h->root.type == bfd_link_hash_undefined | |
5561 | || h->root.type == bfd_link_hash_undefweak) | |
5562 | { | |
5563 | ldsym->l_value = 0; | |
5564 | ldsym->l_scnum = N_UNDEF; | |
5565 | ldsym->l_smtype = XTY_ER; | |
5566 | impbfd = h->root.u.undef.abfd; | |
5567 | } | |
5568 | else if (h->root.type == bfd_link_hash_defined | |
5569 | || h->root.type == bfd_link_hash_defweak) | |
5570 | { | |
5571 | asection *sec; | |
5572 | ||
5573 | sec = h->root.u.def.section; | |
5574 | ldsym->l_value = (sec->output_section->vma | |
5575 | + sec->output_offset | |
5576 | + h->root.u.def.value); | |
5577 | ldsym->l_scnum = sec->output_section->target_index; | |
5578 | ldsym->l_smtype = XTY_SD; | |
5579 | impbfd = sec->owner; | |
5580 | } | |
5581 | else | |
5582 | abort (); | |
5583 | ||
5584 | if (((h->flags & XCOFF_DEF_REGULAR) == 0 | |
0634a431 | 5585 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) |
28a0c103 ILT |
5586 | || (h->flags & XCOFF_IMPORT) != 0) |
5587 | ldsym->l_smtype |= L_IMPORT; | |
5588 | if (((h->flags & XCOFF_DEF_REGULAR) != 0 | |
0634a431 | 5589 | && (h->flags & XCOFF_DEF_DYNAMIC) != 0) |
28a0c103 ILT |
5590 | || (h->flags & XCOFF_EXPORT) != 0) |
5591 | ldsym->l_smtype |= L_EXPORT; | |
5592 | if ((h->flags & XCOFF_ENTRY) != 0) | |
5593 | ldsym->l_smtype |= L_ENTRY; | |
5594 | ||
5595 | ldsym->l_smclas = h->smclas; | |
5596 | ||
5597 | if (ldsym->l_ifile == (bfd_size_type) -1) | |
5598 | ldsym->l_ifile = 0; | |
5599 | else if (ldsym->l_ifile == 0) | |
5600 | { | |
5601 | if ((ldsym->l_smtype & L_IMPORT) == 0) | |
5602 | ldsym->l_ifile = 0; | |
5603 | else if (impbfd == NULL) | |
5604 | ldsym->l_ifile = 0; | |
5605 | else | |
5606 | { | |
5607 | BFD_ASSERT (impbfd->xvec == output_bfd->xvec); | |
5608 | ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; | |
5609 | } | |
5610 | } | |
5611 | ||
5612 | ldsym->l_parm = 0; | |
5613 | ||
5614 | BFD_ASSERT (h->ldindx >= 0); | |
5615 | BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym)); | |
5616 | xcoff_swap_ldsym_out (output_bfd, ldsym, finfo->ldsym + h->ldindx - 3); | |
5617 | h->ldsym = NULL; | |
5618 | } | |
5619 | ||
5620 | /* If this symbol needs global linkage code, write it out. */ | |
5621 | if (h->root.type == bfd_link_hash_defined | |
5622 | && (h->root.u.def.section | |
5623 | == xcoff_hash_table (finfo->info)->linkage_section)) | |
5624 | { | |
5625 | bfd_byte *p; | |
5626 | bfd_vma tocoff; | |
5627 | unsigned int i; | |
5628 | ||
5629 | p = h->root.u.def.section->contents + h->root.u.def.value; | |
5630 | ||
5631 | /* The first instruction in the global linkage code loads a | |
5632 | specific TOC element. */ | |
5633 | tocoff = (h->descriptor->toc_section->output_section->vma | |
5634 | + h->descriptor->toc_section->output_offset | |
28a0c103 | 5635 | - xcoff_data (output_bfd)->toc); |
230de6b8 ILT |
5636 | if ((h->descriptor->flags & XCOFF_SET_TOC) != 0) |
5637 | tocoff += h->descriptor->u.toc_offset; | |
b5403ad7 | 5638 | bfd_put_32 (output_bfd, XCOFF_GLINK_FIRST | (tocoff & 0xffff), p); |
28a0c103 ILT |
5639 | for (i = 0, p += 4; |
5640 | i < sizeof xcoff_glink_code / sizeof xcoff_glink_code[0]; | |
5641 | i++, p += 4) | |
5642 | bfd_put_32 (output_bfd, xcoff_glink_code[i], p); | |
5643 | } | |
5644 | ||
5645 | /* If we created a TOC entry for this symbol, write out the required | |
5646 | relocs. */ | |
5647 | if ((h->flags & XCOFF_SET_TOC) != 0) | |
5648 | { | |
5649 | asection *tocsec; | |
5650 | asection *osec; | |
5651 | int oindx; | |
5652 | struct internal_reloc *irel; | |
5653 | struct internal_ldrel ldrel; | |
e8c4696e ILT |
5654 | struct internal_syment irsym; |
5655 | union internal_auxent iraux; | |
28a0c103 ILT |
5656 | |
5657 | tocsec = h->toc_section; | |
5658 | osec = tocsec->output_section; | |
5659 | oindx = osec->target_index; | |
5660 | irel = finfo->section_info[oindx].relocs + osec->reloc_count; | |
5661 | irel->r_vaddr = (osec->vma | |
5662 | + tocsec->output_offset | |
230de6b8 | 5663 | + h->u.toc_offset); |
28a0c103 ILT |
5664 | if (h->indx >= 0) |
5665 | irel->r_symndx = h->indx; | |
5666 | else | |
5667 | { | |
5668 | h->indx = -2; | |
5669 | irel->r_symndx = obj_raw_syment_count (output_bfd); | |
5670 | } | |
5671 | irel->r_type = R_POS; | |
5672 | irel->r_size = 31; | |
5673 | finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; | |
5674 | ++osec->reloc_count; | |
5675 | ||
5676 | BFD_ASSERT (h->ldindx >= 0); | |
5677 | ldrel.l_vaddr = irel->r_vaddr; | |
5678 | ldrel.l_symndx = h->ldindx; | |
5679 | ldrel.l_rtype = (31 << 8) | R_POS; | |
5680 | ldrel.l_rsecnm = oindx; | |
5681 | xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); | |
5682 | ++finfo->ldrel; | |
e8c4696e ILT |
5683 | |
5684 | /* We need to emit a symbol to define a csect which holds the | |
5685 | reloc. */ | |
5686 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
5687 | strncpy (irsym._n._n_name, h->root.root.string, SYMNMLEN); | |
5688 | else | |
5689 | { | |
5690 | boolean hash; | |
5691 | bfd_size_type indx; | |
5692 | ||
5693 | hash = true; | |
5694 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
5695 | hash = false; | |
5696 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, | |
5697 | false); | |
5698 | if (indx == (bfd_size_type) -1) | |
5699 | return false; | |
5700 | irsym._n._n_n._n_zeroes = 0; | |
5701 | irsym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
5702 | } | |
5703 | ||
5704 | irsym.n_value = irel->r_vaddr; | |
5705 | irsym.n_scnum = osec->target_index; | |
5706 | irsym.n_sclass = C_HIDEXT; | |
5707 | irsym.n_type = T_NULL; | |
5708 | irsym.n_numaux = 1; | |
5709 | ||
5710 | bfd_coff_swap_sym_out (output_bfd, (PTR) &irsym, (PTR) outsym); | |
5711 | outsym += bfd_coff_symesz (output_bfd); | |
5712 | ||
5713 | memset (&iraux, 0, sizeof iraux); | |
5714 | iraux.x_csect.x_smtyp = XTY_SD; | |
5715 | iraux.x_csect.x_scnlen.l = 4; | |
5716 | iraux.x_csect.x_smclas = XMC_TC; | |
5717 | ||
5718 | bfd_coff_swap_aux_out (output_bfd, (PTR) &iraux, T_NULL, C_HIDEXT, 0, 1, | |
5719 | (PTR) outsym); | |
5720 | outsym += bfd_coff_auxesz (output_bfd); | |
5721 | ||
5722 | if (h->indx >= 0) | |
5723 | { | |
5724 | /* We aren't going to write out the symbols below, so we | |
5725 | need to write them out now. */ | |
5726 | if (bfd_seek (output_bfd, | |
5727 | (obj_sym_filepos (output_bfd) | |
5728 | + (obj_raw_syment_count (output_bfd) | |
5729 | * bfd_coff_symesz (output_bfd))), | |
5730 | SEEK_SET) != 0 | |
5731 | || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, | |
5732 | output_bfd) | |
5733 | != (bfd_size_type) (outsym - finfo->outsyms))) | |
5734 | return false; | |
5735 | obj_raw_syment_count (output_bfd) += | |
5736 | (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd); | |
5737 | ||
5738 | outsym = finfo->outsyms; | |
5739 | } | |
28a0c103 ILT |
5740 | } |
5741 | ||
ee174815 ILT |
5742 | /* If this symbol is a specially defined function descriptor, write |
5743 | it out. The first word is the address of the function code | |
5744 | itself, the second word is the address of the TOC, and the third | |
5745 | word is zero. */ | |
5746 | if ((h->flags & XCOFF_DESCRIPTOR) != 0 | |
5747 | && h->root.type == bfd_link_hash_defined | |
5748 | && (h->root.u.def.section | |
5749 | == xcoff_hash_table (finfo->info)->descriptor_section)) | |
5750 | { | |
5751 | asection *sec; | |
5752 | asection *osec; | |
5753 | int oindx; | |
5754 | bfd_byte *p; | |
5755 | struct xcoff_link_hash_entry *hentry; | |
5756 | asection *esec; | |
5757 | struct internal_reloc *irel; | |
5758 | struct internal_ldrel ldrel; | |
5759 | asection *tsec; | |
5760 | ||
5761 | sec = h->root.u.def.section; | |
5762 | osec = sec->output_section; | |
5763 | oindx = osec->target_index; | |
5764 | p = sec->contents + h->root.u.def.value; | |
5765 | ||
5766 | hentry = h->descriptor; | |
5767 | BFD_ASSERT (hentry != NULL | |
5768 | && (hentry->root.type == bfd_link_hash_defined | |
5769 | || hentry->root.type == bfd_link_hash_defweak)); | |
5770 | esec = hentry->root.u.def.section; | |
5771 | bfd_put_32 (output_bfd, | |
5772 | (esec->output_section->vma | |
5773 | + esec->output_offset | |
5774 | + hentry->root.u.def.value), | |
5775 | p); | |
5776 | ||
5777 | irel = finfo->section_info[oindx].relocs + osec->reloc_count; | |
5778 | irel->r_vaddr = (osec->vma | |
5779 | + sec->output_offset | |
5780 | + h->root.u.def.value); | |
5781 | irel->r_symndx = esec->output_section->target_index; | |
5782 | irel->r_type = R_POS; | |
5783 | irel->r_size = 31; | |
5784 | finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; | |
5785 | ++osec->reloc_count; | |
5786 | ||
5787 | ldrel.l_vaddr = irel->r_vaddr; | |
5788 | if (strcmp (esec->output_section->name, ".text") == 0) | |
5789 | ldrel.l_symndx = 0; | |
5790 | else if (strcmp (esec->output_section->name, ".data") == 0) | |
5791 | ldrel.l_symndx = 1; | |
5792 | else if (strcmp (esec->output_section->name, ".bss") == 0) | |
5793 | ldrel.l_symndx = 2; | |
5794 | else | |
5795 | { | |
5796 | (*_bfd_error_handler) | |
5797 | ("%s: loader reloc in unrecognized section `%s'", | |
5798 | bfd_get_filename (output_bfd), | |
5799 | esec->output_section->name); | |
5800 | bfd_set_error (bfd_error_nonrepresentable_section); | |
5801 | return false; | |
5802 | } | |
5803 | ldrel.l_rtype = (31 << 8) | R_POS; | |
5804 | ldrel.l_rsecnm = oindx; | |
5805 | xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); | |
5806 | ++finfo->ldrel; | |
5807 | ||
5808 | bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4); | |
5809 | ||
c3dffbd7 ILT |
5810 | tsec = coff_section_from_bfd_index (output_bfd, |
5811 | xcoff_data (output_bfd)->sntoc); | |
ee174815 ILT |
5812 | |
5813 | ++irel; | |
5814 | irel->r_vaddr = (osec->vma | |
5815 | + sec->output_offset | |
5816 | + h->root.u.def.value | |
5817 | + 4); | |
5818 | irel->r_symndx = tsec->output_section->target_index; | |
5819 | irel->r_type = R_POS; | |
5820 | irel->r_size = 31; | |
5821 | finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; | |
5822 | ++osec->reloc_count; | |
5823 | ||
5824 | ldrel.l_vaddr = irel->r_vaddr; | |
5825 | if (strcmp (tsec->output_section->name, ".text") == 0) | |
5826 | ldrel.l_symndx = 0; | |
5827 | else if (strcmp (tsec->output_section->name, ".data") == 0) | |
5828 | ldrel.l_symndx = 1; | |
5829 | else if (strcmp (tsec->output_section->name, ".bss") == 0) | |
5830 | ldrel.l_symndx = 2; | |
5831 | else | |
5832 | { | |
5833 | (*_bfd_error_handler) | |
5834 | ("%s: loader reloc in unrecognized section `%s'", | |
5835 | bfd_get_filename (output_bfd), | |
5836 | tsec->output_section->name); | |
5837 | bfd_set_error (bfd_error_nonrepresentable_section); | |
5838 | return false; | |
5839 | } | |
5840 | ldrel.l_rtype = (31 << 8) | R_POS; | |
5841 | ldrel.l_rsecnm = oindx; | |
5842 | xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); | |
5843 | ++finfo->ldrel; | |
5844 | } | |
5845 | ||
28a0c103 | 5846 | if (h->indx >= 0) |
e8c4696e ILT |
5847 | { |
5848 | BFD_ASSERT (outsym == finfo->outsyms); | |
5849 | return true; | |
5850 | } | |
28a0c103 ILT |
5851 | |
5852 | if (h->indx != -2 | |
5853 | && (finfo->info->strip == strip_all | |
5854 | || (finfo->info->strip == strip_some | |
5855 | && (bfd_hash_lookup (finfo->info->keep_hash, | |
5856 | h->root.root.string, false, false) | |
5857 | == NULL)))) | |
e8c4696e ILT |
5858 | { |
5859 | BFD_ASSERT (outsym == finfo->outsyms); | |
5860 | return true; | |
5861 | } | |
28a0c103 ILT |
5862 | |
5863 | if (h->indx != -2 | |
5864 | && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0) | |
e8c4696e ILT |
5865 | { |
5866 | BFD_ASSERT (outsym == finfo->outsyms); | |
5867 | return true; | |
5868 | } | |
aadf04f7 SS |
5869 | |
5870 | memset (&aux, 0, sizeof aux); | |
5871 | ||
5872 | h->indx = obj_raw_syment_count (output_bfd); | |
5873 | ||
5874 | if (strlen (h->root.root.string) <= SYMNMLEN) | |
5875 | strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); | |
5876 | else | |
5877 | { | |
5878 | boolean hash; | |
5879 | bfd_size_type indx; | |
5880 | ||
5881 | hash = true; | |
5882 | if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
5883 | hash = false; | |
5884 | indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, | |
5885 | false); | |
5886 | if (indx == (bfd_size_type) -1) | |
5887 | return false; | |
5888 | isym._n._n_n._n_zeroes = 0; | |
5889 | isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; | |
5890 | } | |
5891 | ||
5892 | if (h->root.type == bfd_link_hash_undefined | |
5893 | || h->root.type == bfd_link_hash_undefweak) | |
5894 | { | |
5895 | isym.n_value = 0; | |
5896 | isym.n_scnum = N_UNDEF; | |
5897 | isym.n_sclass = C_EXT; | |
5898 | aux.x_csect.x_smtyp = XTY_ER; | |
5899 | } | |
e8c4696e ILT |
5900 | else if ((h->root.type == bfd_link_hash_defined |
5901 | || h->root.type == bfd_link_hash_defweak) | |
5902 | && h->smclas == XMC_XO) | |
5903 | { | |
5904 | BFD_ASSERT (bfd_is_abs_section (h->root.u.def.section)); | |
5905 | isym.n_value = h->root.u.def.value; | |
5906 | isym.n_scnum = N_UNDEF; | |
5907 | isym.n_sclass = C_EXT; | |
5908 | aux.x_csect.x_smtyp = XTY_ER; | |
5909 | } | |
aadf04f7 SS |
5910 | else if (h->root.type == bfd_link_hash_defined |
5911 | || h->root.type == bfd_link_hash_defweak) | |
5912 | { | |
2d7de17d ILT |
5913 | struct xcoff_link_size_list *l; |
5914 | ||
aadf04f7 SS |
5915 | isym.n_value = (h->root.u.def.section->output_section->vma |
5916 | + h->root.u.def.section->output_offset | |
5917 | + h->root.u.def.value); | |
5918 | isym.n_scnum = h->root.u.def.section->output_section->target_index; | |
5919 | isym.n_sclass = C_HIDEXT; | |
5920 | aux.x_csect.x_smtyp = XTY_SD; | |
2d7de17d ILT |
5921 | |
5922 | if ((h->flags & XCOFF_HAS_SIZE) != 0) | |
5923 | { | |
5924 | for (l = xcoff_hash_table (finfo->info)->size_list; | |
5925 | l != NULL; | |
5926 | l = l->next) | |
5927 | { | |
5928 | if (l->h == h) | |
5929 | { | |
5930 | aux.x_csect.x_scnlen.l = l->size; | |
5931 | break; | |
5932 | } | |
5933 | } | |
5934 | } | |
5935 | } | |
5936 | else if (h->root.type == bfd_link_hash_common) | |
5937 | { | |
5938 | isym.n_value = (h->root.u.c.p->section->output_section->vma | |
5939 | + h->root.u.c.p->section->output_offset); | |
5940 | isym.n_scnum = h->root.u.c.p->section->output_section->target_index; | |
5941 | isym.n_sclass = C_EXT; | |
5942 | aux.x_csect.x_smtyp = XTY_CM; | |
5943 | aux.x_csect.x_scnlen.l = h->root.u.c.size; | |
aadf04f7 SS |
5944 | } |
5945 | else | |
5946 | abort (); | |
5947 | ||
5948 | isym.n_type = T_NULL; | |
5949 | isym.n_numaux = 1; | |
5950 | ||
5951 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
5952 | outsym += bfd_coff_symesz (output_bfd); | |
5953 | ||
28a0c103 | 5954 | aux.x_csect.x_smclas = h->smclas; |
aadf04f7 SS |
5955 | |
5956 | bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, isym.n_sclass, 0, 1, | |
5957 | (PTR) outsym); | |
5958 | outsym += bfd_coff_auxesz (output_bfd); | |
5959 | ||
e8c4696e ILT |
5960 | if ((h->root.type == bfd_link_hash_defined |
5961 | || h->root.type == bfd_link_hash_defweak) | |
5962 | && h->smclas != XMC_XO) | |
aadf04f7 SS |
5963 | { |
5964 | /* We just output an SD symbol. Now output an LD symbol. */ | |
5965 | ||
5966 | h->indx += 2; | |
5967 | ||
5968 | isym.n_sclass = C_EXT; | |
5969 | bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); | |
5970 | outsym += bfd_coff_symesz (output_bfd); | |
5971 | ||
5972 | aux.x_csect.x_smtyp = XTY_LD; | |
5973 | aux.x_csect.x_scnlen.l = obj_raw_syment_count (output_bfd); | |
5974 | ||
5975 | bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, C_EXT, 0, 1, | |
5976 | (PTR) outsym); | |
5977 | outsym += bfd_coff_auxesz (output_bfd); | |
5978 | } | |
5979 | ||
5980 | if (bfd_seek (output_bfd, | |
5981 | (obj_sym_filepos (output_bfd) | |
5982 | + (obj_raw_syment_count (output_bfd) | |
5983 | * bfd_coff_symesz (output_bfd))), | |
5984 | SEEK_SET) != 0 | |
5985 | || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, output_bfd) | |
5986 | != (bfd_size_type) (outsym - finfo->outsyms))) | |
5987 | return false; | |
5988 | obj_raw_syment_count (output_bfd) += | |
5989 | (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd); | |
5990 | ||
5991 | return true; | |
5992 | } | |
5993 | ||
5994 | /* Handle a link order which is supposed to generate a reloc. */ | |
5995 | ||
5996 | static boolean | |
5997 | xcoff_reloc_link_order (output_bfd, finfo, output_section, link_order) | |
5998 | bfd *output_bfd; | |
5999 | struct xcoff_final_link_info *finfo; | |
6000 | asection *output_section; | |
6001 | struct bfd_link_order *link_order; | |
6002 | { | |
6003 | reloc_howto_type *howto; | |
2d7de17d ILT |
6004 | struct xcoff_link_hash_entry *h; |
6005 | asection *hsec; | |
6006 | bfd_vma hval; | |
6007 | bfd_vma addend; | |
aadf04f7 SS |
6008 | struct internal_reloc *irel; |
6009 | struct xcoff_link_hash_entry **rel_hash_ptr; | |
2d7de17d ILT |
6010 | struct internal_ldrel ldrel; |
6011 | ||
6012 | if (link_order->type == bfd_section_reloc_link_order) | |
6013 | { | |
6014 | /* We need to somehow locate a symbol in the right section. The | |
6015 | symbol must either have a value of zero, or we must adjust | |
6016 | the addend by the value of the symbol. FIXME: Write this | |
6017 | when we need it. The old linker couldn't handle this anyhow. */ | |
6018 | abort (); | |
6019 | } | |
aadf04f7 SS |
6020 | |
6021 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | |
6022 | if (howto == NULL) | |
6023 | { | |
6024 | bfd_set_error (bfd_error_bad_value); | |
6025 | return false; | |
6026 | } | |
6027 | ||
c3dffbd7 ILT |
6028 | h = ((struct xcoff_link_hash_entry *) |
6029 | bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, | |
6030 | link_order->u.reloc.p->u.name, | |
6031 | false, false, true)); | |
2d7de17d ILT |
6032 | if (h == NULL) |
6033 | { | |
6034 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
6035 | (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, | |
6036 | (asection *) NULL, (bfd_vma) 0))) | |
6037 | return false; | |
6038 | return true; | |
6039 | } | |
6040 | ||
6041 | if (h->root.type == bfd_link_hash_common) | |
6042 | { | |
6043 | hsec = h->root.u.c.p->section; | |
6044 | hval = 0; | |
6045 | } | |
6046 | else if (h->root.type == bfd_link_hash_defined | |
6047 | || h->root.type == bfd_link_hash_defweak) | |
6048 | { | |
6049 | hsec = h->root.u.def.section; | |
6050 | hval = h->root.u.def.value; | |
6051 | } | |
6052 | else | |
6053 | { | |
6054 | hsec = NULL; | |
6055 | hval = 0; | |
6056 | } | |
6057 | ||
6058 | addend = link_order->u.reloc.p->addend; | |
6059 | if (hsec != NULL) | |
6060 | addend += (hsec->output_section->vma | |
6061 | + hsec->output_offset | |
6062 | + hval); | |
6063 | ||
6064 | if (addend != 0) | |
aadf04f7 SS |
6065 | { |
6066 | bfd_size_type size; | |
6067 | bfd_byte *buf; | |
6068 | bfd_reloc_status_type rstat; | |
6069 | boolean ok; | |
6070 | ||
6071 | size = bfd_get_reloc_size (howto); | |
6072 | buf = (bfd_byte *) bfd_zmalloc (size); | |
6073 | if (buf == NULL) | |
a9713b91 | 6074 | return false; |
aadf04f7 | 6075 | |
2d7de17d | 6076 | rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); |
aadf04f7 SS |
6077 | switch (rstat) |
6078 | { | |
6079 | case bfd_reloc_ok: | |
6080 | break; | |
6081 | default: | |
6082 | case bfd_reloc_outofrange: | |
6083 | abort (); | |
6084 | case bfd_reloc_overflow: | |
6085 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
2d7de17d ILT |
6086 | (finfo->info, link_order->u.reloc.p->u.name, |
6087 | howto->name, addend, (bfd *) NULL, (asection *) NULL, | |
6088 | (bfd_vma) 0))) | |
aadf04f7 SS |
6089 | { |
6090 | free (buf); | |
6091 | return false; | |
6092 | } | |
6093 | break; | |
6094 | } | |
6095 | ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, | |
6096 | (file_ptr) link_order->offset, size); | |
6097 | free (buf); | |
6098 | if (! ok) | |
6099 | return false; | |
6100 | } | |
6101 | ||
6102 | /* Store the reloc information in the right place. It will get | |
6103 | swapped and written out at the end of the final_link routine. */ | |
6104 | ||
6105 | irel = (finfo->section_info[output_section->target_index].relocs | |
6106 | + output_section->reloc_count); | |
6107 | rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes | |
6108 | + output_section->reloc_count); | |
6109 | ||
6110 | memset (irel, 0, sizeof (struct internal_reloc)); | |
6111 | *rel_hash_ptr = NULL; | |
6112 | ||
6113 | irel->r_vaddr = output_section->vma + link_order->offset; | |
6114 | ||
2d7de17d ILT |
6115 | if (h->indx >= 0) |
6116 | irel->r_symndx = h->indx; | |
6117 | else | |
aadf04f7 | 6118 | { |
2d7de17d ILT |
6119 | /* Set the index to -2 to force this symbol to get written out. */ |
6120 | h->indx = -2; | |
6121 | *rel_hash_ptr = h; | |
aadf04f7 SS |
6122 | irel->r_symndx = 0; |
6123 | } | |
2d7de17d ILT |
6124 | |
6125 | irel->r_type = howto->type; | |
6126 | irel->r_size = howto->bitsize - 1; | |
6127 | if (howto->complain_on_overflow == complain_overflow_signed) | |
6128 | irel->r_size |= 0x80; | |
6129 | ||
6130 | ++output_section->reloc_count; | |
6131 | ||
6132 | /* Now output the reloc to the .loader section. */ | |
6133 | ||
6134 | ldrel.l_vaddr = irel->r_vaddr; | |
6135 | ||
6136 | if (hsec != NULL) | |
aadf04f7 | 6137 | { |
2d7de17d ILT |
6138 | const char *secname; |
6139 | ||
6140 | secname = hsec->output_section->name; | |
aadf04f7 | 6141 | |
2d7de17d ILT |
6142 | if (strcmp (secname, ".text") == 0) |
6143 | ldrel.l_symndx = 0; | |
6144 | else if (strcmp (secname, ".data") == 0) | |
6145 | ldrel.l_symndx = 1; | |
6146 | else if (strcmp (secname, ".bss") == 0) | |
6147 | ldrel.l_symndx = 2; | |
6148 | else | |
aadf04f7 | 6149 | { |
2d7de17d ILT |
6150 | (*_bfd_error_handler) |
6151 | ("%s: loader reloc in unrecognized section `%s'", | |
6152 | bfd_get_filename (output_bfd), secname); | |
6153 | bfd_set_error (bfd_error_nonrepresentable_section); | |
6154 | return false; | |
aadf04f7 | 6155 | } |
2d7de17d ILT |
6156 | } |
6157 | else | |
6158 | { | |
6159 | if (h->ldindx < 0) | |
aadf04f7 | 6160 | { |
2d7de17d ILT |
6161 | (*_bfd_error_handler) |
6162 | ("%s: `%s' in loader reloc but not loader sym", | |
6163 | bfd_get_filename (output_bfd), | |
6164 | h->root.root.string); | |
6165 | bfd_set_error (bfd_error_bad_value); | |
6166 | return false; | |
aadf04f7 | 6167 | } |
2d7de17d | 6168 | ldrel.l_symndx = h->ldindx; |
aadf04f7 SS |
6169 | } |
6170 | ||
2d7de17d ILT |
6171 | ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; |
6172 | ldrel.l_rsecnm = output_section->target_index; | |
6173 | xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); | |
6174 | ++finfo->ldrel; | |
aadf04f7 SS |
6175 | |
6176 | return true; | |
6177 | } | |
6178 | ||
6179 | /* Sort relocs by VMA. This is called via qsort. */ | |
6180 | ||
6181 | static int | |
6182 | xcoff_sort_relocs (p1, p2) | |
6183 | const PTR p1; | |
6184 | const PTR p2; | |
6185 | { | |
6186 | const struct internal_reloc *r1 = (const struct internal_reloc *) p1; | |
6187 | const struct internal_reloc *r2 = (const struct internal_reloc *) p2; | |
6188 | ||
6189 | if (r1->r_vaddr > r2->r_vaddr) | |
6190 | return 1; | |
6191 | else if (r1->r_vaddr < r2->r_vaddr) | |
6192 | return -1; | |
6193 | else | |
6194 | return 0; | |
6195 | } | |
6196 | ||
6197 | /* This is the relocation function for the RS/6000/POWER/PowerPC. | |
6198 | This is currently the only processor which uses XCOFF; I hope that | |
6199 | will never change. */ | |
6200 | ||
6201 | boolean | |
6202 | _bfd_ppc_xcoff_relocate_section (output_bfd, info, input_bfd, | |
6203 | input_section, contents, relocs, syms, | |
6204 | sections) | |
6205 | bfd *output_bfd; | |
6206 | struct bfd_link_info *info; | |
6207 | bfd *input_bfd; | |
6208 | asection *input_section; | |
6209 | bfd_byte *contents; | |
6210 | struct internal_reloc *relocs; | |
6211 | struct internal_syment *syms; | |
6212 | asection **sections; | |
6213 | { | |
6214 | struct internal_reloc *rel; | |
6215 | struct internal_reloc *relend; | |
6216 | ||
6217 | rel = relocs; | |
6218 | relend = rel + input_section->reloc_count; | |
6219 | for (; rel < relend; rel++) | |
6220 | { | |
6221 | long symndx; | |
6222 | struct xcoff_link_hash_entry *h; | |
6223 | struct internal_syment *sym; | |
6224 | bfd_vma addend; | |
6225 | bfd_vma val; | |
6226 | struct reloc_howto_struct howto; | |
6227 | bfd_reloc_status_type rstat; | |
6228 | ||
28a0c103 | 6229 | /* Relocation type R_REF is a special relocation type which is |
aadf04f7 SS |
6230 | merely used to prevent garbage collection from occurring for |
6231 | the csect including the symbol which it references. */ | |
28a0c103 | 6232 | if (rel->r_type == R_REF) |
aadf04f7 SS |
6233 | continue; |
6234 | ||
6235 | symndx = rel->r_symndx; | |
6236 | ||
6237 | if (symndx == -1) | |
6238 | { | |
6239 | h = NULL; | |
6240 | sym = NULL; | |
6241 | addend = 0; | |
6242 | } | |
6243 | else | |
6244 | { | |
6245 | h = obj_xcoff_sym_hashes (input_bfd)[symndx]; | |
6246 | sym = syms + symndx; | |
6247 | addend = - sym->n_value; | |
6248 | } | |
6249 | ||
6250 | /* We build the howto information on the fly. */ | |
6251 | ||
6252 | howto.type = rel->r_type; | |
6253 | howto.rightshift = 0; | |
6254 | howto.size = 2; | |
6255 | howto.bitsize = (rel->r_size & 0x1f) + 1; | |
6256 | howto.pc_relative = false; | |
6257 | howto.bitpos = 0; | |
6258 | if ((rel->r_size & 0x80) != 0) | |
6259 | howto.complain_on_overflow = complain_overflow_signed; | |
6260 | else | |
6261 | howto.complain_on_overflow = complain_overflow_bitfield; | |
6262 | howto.special_function = NULL; | |
6263 | howto.name = "internal"; | |
6264 | howto.partial_inplace = true; | |
6265 | if (howto.bitsize == 32) | |
6266 | howto.src_mask = howto.dst_mask = 0xffffffff; | |
6267 | else | |
6268 | { | |
6269 | howto.src_mask = howto.dst_mask = (1 << howto.bitsize) - 1; | |
6270 | if (howto.bitsize == 16) | |
6271 | howto.size = 1; | |
6272 | } | |
6273 | howto.pcrel_offset = false; | |
6274 | ||
6275 | val = 0; | |
6276 | ||
6277 | if (h == NULL) | |
6278 | { | |
6279 | asection *sec; | |
6280 | ||
6281 | if (symndx == -1) | |
6282 | { | |
6283 | sec = bfd_abs_section_ptr; | |
6284 | val = 0; | |
6285 | } | |
6286 | else | |
6287 | { | |
6288 | sec = sections[symndx]; | |
b5403ad7 ILT |
6289 | /* Hack to make sure we use the right TOC anchor value |
6290 | if this reloc is against the TOC anchor. */ | |
6291 | if (sec->name[3] == '0' | |
6292 | && strcmp (sec->name, ".tc0") == 0) | |
6293 | val = xcoff_data (output_bfd)->toc; | |
6294 | else | |
6295 | val = (sec->output_section->vma | |
6296 | + sec->output_offset | |
6297 | + sym->n_value | |
6298 | - sec->vma); | |
aadf04f7 SS |
6299 | } |
6300 | } | |
6301 | else | |
6302 | { | |
6303 | if (h->root.type == bfd_link_hash_defined | |
6304 | || h->root.type == bfd_link_hash_defweak) | |
6305 | { | |
6306 | asection *sec; | |
6307 | ||
6308 | sec = h->root.u.def.section; | |
6309 | val = (h->root.u.def.value | |
6310 | + sec->output_section->vma | |
6311 | + sec->output_offset); | |
6312 | } | |
aad2c618 ILT |
6313 | else if (h->root.type == bfd_link_hash_common) |
6314 | { | |
6315 | asection *sec; | |
6316 | ||
6317 | sec = h->root.u.c.p->section; | |
6318 | val = (sec->output_section->vma | |
6319 | + sec->output_offset); | |
6320 | } | |
0634a431 | 6321 | else if ((h->flags & XCOFF_DEF_DYNAMIC) != 0 |
28a0c103 ILT |
6322 | || (h->flags & XCOFF_IMPORT) != 0) |
6323 | { | |
6324 | /* Every symbol in a shared object is defined somewhere. */ | |
6325 | val = 0; | |
6326 | } | |
a5c7acea | 6327 | else if (! info->relocateable) |
aadf04f7 SS |
6328 | { |
6329 | if (! ((*info->callbacks->undefined_symbol) | |
6330 | (info, h->root.root.string, input_bfd, input_section, | |
6331 | rel->r_vaddr - input_section->vma))) | |
6332 | return false; | |
b2a05baf ILT |
6333 | |
6334 | /* Don't try to process the reloc. It can't help, and | |
6335 | it may generate another error. */ | |
6336 | continue; | |
aadf04f7 SS |
6337 | } |
6338 | } | |
6339 | ||
6340 | /* I took the relocation type definitions from two documents: | |
6341 | the PowerPC AIX Version 4 Application Binary Interface, First | |
6342 | Edition (April 1992), and the PowerOpen ABI, Big-Endian | |
6343 | 32-Bit Hardware Implementation (June 30, 1994). Differences | |
6344 | between the documents are noted below. */ | |
6345 | ||
6346 | switch (rel->r_type) | |
6347 | { | |
28a0c103 ILT |
6348 | case R_RTB: |
6349 | case R_RRTBI: | |
6350 | case R_RRTBA: | |
aadf04f7 SS |
6351 | /* These relocs are defined by the PowerPC ABI to be |
6352 | relative branches which use half of the difference | |
6353 | between the symbol and the program counter. I can't | |
6354 | quite figure out when this is useful. These relocs are | |
6355 | not defined by the PowerOpen ABI. */ | |
6356 | default: | |
6357 | (*_bfd_error_handler) | |
6358 | ("%s: unsupported relocation type 0x%02x", | |
6359 | bfd_get_filename (input_bfd), (unsigned int) rel->r_type); | |
6360 | bfd_set_error (bfd_error_bad_value); | |
6361 | return false; | |
28a0c103 | 6362 | case R_POS: |
aadf04f7 SS |
6363 | /* Simple positive relocation. */ |
6364 | break; | |
28a0c103 | 6365 | case R_NEG: |
aadf04f7 SS |
6366 | /* Simple negative relocation. */ |
6367 | val = - val; | |
6368 | break; | |
28a0c103 | 6369 | case R_REL: |
aadf04f7 SS |
6370 | /* Simple PC relative relocation. */ |
6371 | howto.pc_relative = true; | |
6372 | break; | |
28a0c103 | 6373 | case R_TOC: |
aadf04f7 SS |
6374 | /* TOC relative relocation. The value in the instruction in |
6375 | the input file is the offset from the input file TOC to | |
6376 | the desired location. We want the offset from the final | |
6377 | TOC to the desired location. We have: | |
6378 | isym = iTOC + in | |
6379 | iinsn = in + o | |
6380 | osym = oTOC + on | |
6381 | oinsn = on + o | |
6382 | so we must change insn by on - in. | |
6383 | */ | |
28a0c103 | 6384 | case R_GL: |
aadf04f7 SS |
6385 | /* Global linkage relocation. The value of this relocation |
6386 | is the address of the entry in the TOC section. */ | |
28a0c103 | 6387 | case R_TCL: |
aadf04f7 | 6388 | /* Local object TOC address. I can't figure out the |
28a0c103 ILT |
6389 | difference between this and case R_GL. */ |
6390 | case R_TRL: | |
aadf04f7 SS |
6391 | /* TOC relative relocation. A TOC relative load instruction |
6392 | which may be changed to a load address instruction. | |
6393 | FIXME: We don't currently implement this optimization. */ | |
28a0c103 | 6394 | case R_TRLA: |
aadf04f7 SS |
6395 | /* TOC relative relocation. This is a TOC relative load |
6396 | address instruction which may be changed to a load | |
6397 | instruction. FIXME: I don't know if this is the correct | |
6398 | implementation. */ | |
a8a3d83a | 6399 | if (h != NULL && h->smclas != XMC_TD) |
230de6b8 | 6400 | { |
a8a3d83a ILT |
6401 | if (h->toc_section == NULL) |
6402 | { | |
6403 | (*_bfd_error_handler) | |
6404 | ("%s: TOC reloc at 0x%x to symbol `%s' with no TOC entry", | |
6405 | bfd_get_filename (input_bfd), rel->r_vaddr, | |
6406 | h->root.root.string); | |
6407 | bfd_set_error (bfd_error_bad_value); | |
6408 | return false; | |
6409 | } | |
6410 | ||
230de6b8 ILT |
6411 | BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); |
6412 | val = (h->toc_section->output_section->vma | |
6413 | + h->toc_section->output_offset); | |
6414 | } | |
a8a3d83a | 6415 | |
aadf04f7 SS |
6416 | val = ((val - xcoff_data (output_bfd)->toc) |
6417 | - (sym->n_value - xcoff_data (input_bfd)->toc)); | |
6418 | addend = 0; | |
6419 | break; | |
28a0c103 | 6420 | case R_BA: |
aadf04f7 SS |
6421 | /* Absolute branch. We don't want to mess with the lower |
6422 | two bits of the instruction. */ | |
28a0c103 | 6423 | case R_CAI: |
aadf04f7 SS |
6424 | /* The PowerPC ABI defines this as an absolute call which |
6425 | may be modified to become a relative call. The PowerOpen | |
6426 | ABI does not define this relocation type. */ | |
28a0c103 | 6427 | case R_RBA: |
aadf04f7 SS |
6428 | /* Absolute branch which may be modified to become a |
6429 | relative branch. */ | |
28a0c103 | 6430 | case R_RBAC: |
aadf04f7 SS |
6431 | /* The PowerPC ABI defines this as an absolute branch to a |
6432 | fixed address which may be modified to an absolute branch | |
6433 | to a symbol. The PowerOpen ABI does not define this | |
6434 | relocation type. */ | |
28a0c103 | 6435 | case R_RBRC: |
aadf04f7 SS |
6436 | /* The PowerPC ABI defines this as an absolute branch to a |
6437 | fixed address which may be modified to a relative branch. | |
6438 | The PowerOpen ABI does not define this relocation type. */ | |
6439 | howto.src_mask &= ~3; | |
6440 | howto.dst_mask = howto.src_mask; | |
6441 | break; | |
28a0c103 | 6442 | case R_BR: |
aadf04f7 SS |
6443 | /* Relative branch. We don't want to mess with the lower |
6444 | two bits of the instruction. */ | |
28a0c103 | 6445 | case R_CREL: |
aadf04f7 SS |
6446 | /* The PowerPC ABI defines this as a relative call which may |
6447 | be modified to become an absolute call. The PowerOpen | |
6448 | ABI does not define this relocation type. */ | |
28a0c103 | 6449 | case R_RBR: |
aadf04f7 SS |
6450 | /* A relative branch which may be modified to become an |
6451 | absolute branch. FIXME: We don't implement this, | |
6452 | although we should for symbols of storage mapping class | |
6453 | XMC_XO. */ | |
6454 | howto.pc_relative = true; | |
6455 | howto.src_mask &= ~3; | |
6456 | howto.dst_mask = howto.src_mask; | |
6457 | break; | |
28a0c103 | 6458 | case R_RL: |
aadf04f7 SS |
6459 | /* The PowerPC AIX ABI describes this as a load which may be |
6460 | changed to a load address. The PowerOpen ABI says this | |
28a0c103 | 6461 | is the same as case R_POS. */ |
aadf04f7 | 6462 | break; |
28a0c103 | 6463 | case R_RLA: |
aadf04f7 SS |
6464 | /* The PowerPC AIX ABI describes this as a load address |
6465 | which may be changed to a load. The PowerOpen ABI says | |
28a0c103 | 6466 | this is the same as R_POS. */ |
aadf04f7 SS |
6467 | break; |
6468 | } | |
6469 | ||
28a0c103 ILT |
6470 | /* If we see an R_BR or R_RBR reloc which is jumping to global |
6471 | linkage code, and it is followed by an appropriate cror nop | |
6472 | instruction, we replace the cror with lwz r2,20(r1). This | |
6473 | restores the TOC after the glink code. Contrariwise, if the | |
6474 | call is followed by a lwz r2,20(r1), but the call is not | |
6475 | going to global linkage code, we can replace the load with a | |
6476 | cror. */ | |
6477 | if ((rel->r_type == R_BR || rel->r_type == R_RBR) | |
6478 | && h != NULL | |
6479 | && h->root.type == bfd_link_hash_defined | |
6480 | && (rel->r_vaddr - input_section->vma + 8 | |
6481 | <= input_section->_cooked_size)) | |
6482 | { | |
6483 | bfd_byte *pnext; | |
6484 | unsigned long next; | |
6485 | ||
6486 | pnext = contents + (rel->r_vaddr - input_section->vma) + 4; | |
6487 | next = bfd_get_32 (input_bfd, pnext); | |
49144784 ILT |
6488 | |
6489 | /* The _ptrgl function is magic. It is used by the AIX | |
6490 | compiler to call a function through a pointer. */ | |
6491 | if (h->smclas == XMC_GL | |
6492 | || strcmp (h->root.root.string, "._ptrgl") == 0) | |
28a0c103 ILT |
6493 | { |
6494 | if (next == 0x4def7b82 /* cror 15,15,15 */ | |
6495 | || next == 0x4ffffb82) /* cror 31,31,31 */ | |
6496 | bfd_put_32 (input_bfd, 0x80410014, pnext); /* lwz r1,20(r1) */ | |
6497 | } | |
6498 | else | |
6499 | { | |
6500 | if (next == 0x80410014) /* lwz r1,20(r1) */ | |
6501 | bfd_put_32 (input_bfd, 0x4ffffb82, pnext); /* cror 31,31,31 */ | |
6502 | } | |
6503 | } | |
6504 | ||
6505 | /* A PC relative reloc includes the section address. */ | |
6506 | if (howto.pc_relative) | |
6507 | addend += input_section->vma; | |
6508 | ||
aadf04f7 SS |
6509 | rstat = _bfd_final_link_relocate (&howto, input_bfd, input_section, |
6510 | contents, | |
6511 | rel->r_vaddr - input_section->vma, | |
6512 | val, addend); | |
6513 | ||
6514 | switch (rstat) | |
6515 | { | |
6516 | default: | |
6517 | abort (); | |
6518 | case bfd_reloc_ok: | |
6519 | break; | |
6520 | case bfd_reloc_overflow: | |
6521 | { | |
6522 | const char *name; | |
6523 | char buf[SYMNMLEN + 1]; | |
6524 | char howto_name[10]; | |
6525 | ||
6526 | if (symndx == -1) | |
6527 | name = "*ABS*"; | |
6528 | else if (h != NULL) | |
6529 | name = h->root.root.string; | |
6530 | else | |
6531 | { | |
6532 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
6533 | if (name == NULL) | |
6534 | return false; | |
6535 | } | |
6536 | sprintf (howto_name, "0x%02x", rel->r_type); | |
6537 | ||
6538 | if (! ((*info->callbacks->reloc_overflow) | |
6539 | (info, name, howto_name, (bfd_vma) 0, input_bfd, | |
6540 | input_section, rel->r_vaddr - input_section->vma))) | |
6541 | return false; | |
6542 | } | |
6543 | } | |
6544 | } | |
6545 | ||
6546 | return true; | |
6547 | } |