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252b5132 RH |
1 | /* MIPS-specific support for 32-bit ELF |
2 | Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. | |
3 | ||
4 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
5 | <ian@cygnus.com>. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly | |
24 | different MIPS ELF from other targets. This matters when linking. | |
25 | This file supports both, switching at runtime. */ | |
26 | ||
27 | #include "bfd.h" | |
28 | #include "sysdep.h" | |
29 | #include "libbfd.h" | |
30 | #include "bfdlink.h" | |
31 | #include "genlink.h" | |
32 | #include "elf-bfd.h" | |
33 | #include "elf/mips.h" | |
34 | ||
35 | /* Get the ECOFF swapping routines. */ | |
36 | #include "coff/sym.h" | |
37 | #include "coff/symconst.h" | |
38 | #include "coff/internal.h" | |
39 | #include "coff/ecoff.h" | |
40 | #include "coff/mips.h" | |
41 | #define ECOFF_32 | |
42 | #include "ecoffswap.h" | |
43 | ||
44 | static bfd_reloc_status_type mips32_64bit_reloc | |
45 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
46 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
47 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
48 | static void mips_info_to_howto_rel | |
49 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
3f830999 MM |
50 | static void mips_info_to_howto_rela |
51 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
252b5132 RH |
52 | static void bfd_mips_elf32_swap_gptab_in |
53 | PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); | |
54 | static void bfd_mips_elf32_swap_gptab_out | |
55 | PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); | |
56 | static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); | |
57 | static boolean mips_elf32_object_p PARAMS ((bfd *)); | |
58 | static boolean mips_elf_create_procedure_table | |
59 | PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *, | |
60 | struct ecoff_debug_info *)); | |
61 | static int mips_elf_additional_program_headers PARAMS ((bfd *)); | |
62 | static boolean mips_elf_modify_segment_map PARAMS ((bfd *)); | |
63 | static INLINE int elf_mips_isa PARAMS ((flagword)); | |
64 | static INLINE int elf_mips_mach PARAMS ((flagword)); | |
65 | static INLINE char* elf_mips_abi_name PARAMS ((flagword)); | |
66 | static boolean mips_elf32_section_from_shdr | |
67 | PARAMS ((bfd *, Elf32_Internal_Shdr *, char *)); | |
68 | static boolean mips_elf32_section_processing | |
69 | PARAMS ((bfd *, Elf32_Internal_Shdr *)); | |
70 | static boolean mips_elf_is_local_label_name | |
71 | PARAMS ((bfd *, const char *)); | |
72 | static struct bfd_hash_entry *mips_elf_link_hash_newfunc | |
73 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
74 | static struct bfd_link_hash_table *mips_elf_link_hash_table_create | |
75 | PARAMS ((bfd *)); | |
76 | static int gptab_compare PARAMS ((const void *, const void *)); | |
77 | static boolean mips_elf_final_link | |
78 | PARAMS ((bfd *, struct bfd_link_info *)); | |
79 | static void mips_elf_relocate_hi16 | |
80 | PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, | |
81 | bfd_vma)); | |
82 | static boolean mips_elf_relocate_got_local | |
83 | PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *, | |
84 | Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
85 | static void mips_elf_relocate_global_got | |
86 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
87 | static bfd_reloc_status_type mips16_jump_reloc | |
88 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
89 | static bfd_reloc_status_type mips16_gprel_reloc | |
90 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
91 | static boolean mips_elf_adjust_dynindx | |
92 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
93 | static boolean mips_elf_relocate_section | |
94 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
95 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
96 | static boolean mips_elf_link_output_symbol_hook | |
97 | PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, | |
98 | asection *)); | |
99 | static boolean mips_elf_create_dynamic_sections | |
100 | PARAMS ((bfd *, struct bfd_link_info *)); | |
101 | static boolean mips_elf_create_compact_rel_section | |
102 | PARAMS ((bfd *, struct bfd_link_info *)); | |
103 | static boolean mips_elf_create_got_section | |
104 | PARAMS ((bfd *, struct bfd_link_info *)); | |
105 | static boolean mips_elf_check_relocs | |
106 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
107 | const Elf_Internal_Rela *)); | |
108 | static boolean mips_elf_adjust_dynamic_symbol | |
109 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
110 | static boolean mips_elf_always_size_sections | |
111 | PARAMS ((bfd *, struct bfd_link_info *)); | |
112 | static boolean mips_elf_size_dynamic_sections | |
113 | PARAMS ((bfd *, struct bfd_link_info *)); | |
114 | static boolean mips_elf_finish_dynamic_symbol | |
115 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
116 | Elf_Internal_Sym *)); | |
117 | static boolean mips_elf_finish_dynamic_sections | |
118 | PARAMS ((bfd *, struct bfd_link_info *)); | |
119 | static boolean mips_elf_add_symbol_hook | |
120 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
121 | const char **, flagword *, asection **, bfd_vma *)); | |
122 | static bfd_reloc_status_type mips_elf_final_gp | |
123 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); | |
124 | static bfd_byte *elf32_mips_get_relocated_section_contents | |
125 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
126 | bfd_byte *, boolean, asymbol **)); | |
127 | ||
128 | /* This is true for Irix 5 executables, false for normal MIPS ELF ABI | |
129 | executables. FIXME: At the moment, we default to always generating | |
130 | Irix 5 executables. */ | |
131 | ||
132 | #define SGI_COMPAT(abfd) (1) | |
133 | ||
134 | /* This structure is used to hold .got information when linking. It | |
135 | is stored in the tdata field of the bfd_elf_section_data structure. */ | |
136 | ||
137 | struct mips_got_info | |
138 | { | |
139 | /* The symbol index of the first global .got symbol. */ | |
140 | unsigned long global_gotsym; | |
141 | /* The number of local .got entries. */ | |
142 | unsigned int local_gotno; | |
143 | /* The number of local .got entries we have used. */ | |
144 | unsigned int assigned_gotno; | |
145 | }; | |
146 | ||
147 | /* The number of local .got entries we reserve. */ | |
148 | #define MIPS_RESERVED_GOTNO (2) | |
149 | ||
150 | /* Instructions which appear in a stub. For some reason the stub is | |
151 | slightly different on an SGI system. */ | |
152 | #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000) | |
153 | #define STUB_LW(abfd) \ | |
154 | (SGI_COMPAT (abfd) \ | |
155 | ? 0x8f998010 /* lw t9,0x8010(gp) */ \ | |
156 | : 0x8f998000) /* lw t9,0x8000(gp) */ | |
157 | #define STUB_MOVE 0x03e07825 /* move t7,ra */ | |
158 | #define STUB_JALR 0x0320f809 /* jal t9 */ | |
159 | #define STUB_LI16 0x34180000 /* ori t8,zero,0 */ | |
160 | #define MIPS_FUNCTION_STUB_SIZE (16) | |
161 | ||
162 | #if 0 | |
163 | /* We no longer try to identify particular sections for the .dynsym | |
164 | section. When we do, we wind up crashing if there are other random | |
165 | sections with relocations. */ | |
166 | ||
167 | /* Names of sections which appear in the .dynsym section in an Irix 5 | |
168 | executable. */ | |
169 | ||
170 | static const char * const mips_elf_dynsym_sec_names[] = | |
171 | { | |
172 | ".text", | |
173 | ".init", | |
174 | ".fini", | |
175 | ".data", | |
176 | ".rodata", | |
177 | ".sdata", | |
178 | ".sbss", | |
179 | ".bss", | |
180 | NULL | |
181 | }; | |
182 | ||
183 | #define SIZEOF_MIPS_DYNSYM_SECNAMES \ | |
184 | (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) | |
185 | ||
186 | /* The number of entries in mips_elf_dynsym_sec_names which go in the | |
187 | text segment. */ | |
188 | ||
189 | #define MIPS_TEXT_DYNSYM_SECNO (3) | |
190 | ||
191 | #endif /* 0 */ | |
192 | ||
193 | /* The names of the runtime procedure table symbols used on Irix 5. */ | |
194 | ||
195 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
196 | { | |
197 | "_procedure_table", | |
198 | "_procedure_string_table", | |
199 | "_procedure_table_size", | |
200 | NULL | |
201 | }; | |
202 | ||
203 | /* These structures are used to generate the .compact_rel section on | |
204 | Irix 5. */ | |
205 | ||
206 | typedef struct | |
207 | { | |
208 | unsigned long id1; /* Always one? */ | |
209 | unsigned long num; /* Number of compact relocation entries. */ | |
210 | unsigned long id2; /* Always two? */ | |
211 | unsigned long offset; /* The file offset of the first relocation. */ | |
212 | unsigned long reserved0; /* Zero? */ | |
213 | unsigned long reserved1; /* Zero? */ | |
214 | } Elf32_compact_rel; | |
215 | ||
216 | typedef struct | |
217 | { | |
218 | bfd_byte id1[4]; | |
219 | bfd_byte num[4]; | |
220 | bfd_byte id2[4]; | |
221 | bfd_byte offset[4]; | |
222 | bfd_byte reserved0[4]; | |
223 | bfd_byte reserved1[4]; | |
224 | } Elf32_External_compact_rel; | |
225 | ||
226 | typedef struct | |
227 | { | |
228 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
229 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
230 | unsigned int dist2to : 8; | |
231 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
232 | unsigned long konst; /* KONST field. See below. */ | |
233 | unsigned long vaddr; /* VADDR to be relocated. */ | |
234 | } Elf32_crinfo; | |
235 | ||
236 | typedef struct | |
237 | { | |
238 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
239 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
240 | unsigned int dist2to : 8; | |
241 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
242 | unsigned long konst; /* KONST field. See below. */ | |
243 | } Elf32_crinfo2; | |
244 | ||
245 | typedef struct | |
246 | { | |
247 | bfd_byte info[4]; | |
248 | bfd_byte konst[4]; | |
249 | bfd_byte vaddr[4]; | |
250 | } Elf32_External_crinfo; | |
251 | ||
252 | typedef struct | |
253 | { | |
254 | bfd_byte info[4]; | |
255 | bfd_byte konst[4]; | |
256 | } Elf32_External_crinfo2; | |
257 | ||
258 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
259 | ||
260 | #define CRINFO_CTYPE (0x1) | |
261 | #define CRINFO_CTYPE_SH (31) | |
262 | #define CRINFO_RTYPE (0xf) | |
263 | #define CRINFO_RTYPE_SH (27) | |
264 | #define CRINFO_DIST2TO (0xff) | |
265 | #define CRINFO_DIST2TO_SH (19) | |
266 | #define CRINFO_RELVADDR (0x7ffff) | |
267 | #define CRINFO_RELVADDR_SH (0) | |
268 | ||
269 | /* A compact relocation info has long (3 words) or short (2 words) | |
270 | formats. A short format doesn't have VADDR field and relvaddr | |
271 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
272 | #define CRF_MIPS_LONG 1 | |
273 | #define CRF_MIPS_SHORT 0 | |
274 | ||
275 | /* There are 4 types of compact relocation at least. The value KONST | |
276 | has different meaning for each type: | |
277 | ||
278 | (type) (konst) | |
279 | CT_MIPS_REL32 Address in data | |
280 | CT_MIPS_WORD Address in word (XXX) | |
281 | CT_MIPS_GPHI_LO GP - vaddr | |
282 | CT_MIPS_JMPAD Address to jump | |
283 | */ | |
284 | ||
285 | #define CRT_MIPS_REL32 0xa | |
286 | #define CRT_MIPS_WORD 0xb | |
287 | #define CRT_MIPS_GPHI_LO 0xc | |
288 | #define CRT_MIPS_JMPAD 0xd | |
289 | ||
290 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
291 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
292 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
293 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
294 | ||
295 | static void bfd_elf32_swap_compact_rel_out | |
296 | PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *)); | |
297 | static void bfd_elf32_swap_crinfo_out | |
298 | PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *)); | |
299 | ||
300 | #define USE_REL 1 /* MIPS uses REL relocations instead of RELA */ | |
301 | ||
3f830999 MM |
302 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
303 | from smaller values. Start with zero, widen, *then* decrement. */ | |
304 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
305 | ||
252b5132 RH |
306 | static reloc_howto_type elf_mips_howto_table[] = |
307 | { | |
308 | /* No relocation. */ | |
309 | HOWTO (R_MIPS_NONE, /* type */ | |
310 | 0, /* rightshift */ | |
311 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 0, /* bitsize */ | |
313 | false, /* pc_relative */ | |
314 | 0, /* bitpos */ | |
315 | complain_overflow_dont, /* complain_on_overflow */ | |
316 | bfd_elf_generic_reloc, /* special_function */ | |
317 | "R_MIPS_NONE", /* name */ | |
318 | false, /* partial_inplace */ | |
319 | 0, /* src_mask */ | |
320 | 0, /* dst_mask */ | |
321 | false), /* pcrel_offset */ | |
322 | ||
323 | /* 16 bit relocation. */ | |
324 | HOWTO (R_MIPS_16, /* type */ | |
325 | 0, /* rightshift */ | |
326 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 16, /* bitsize */ | |
328 | false, /* pc_relative */ | |
329 | 0, /* bitpos */ | |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* special_function */ | |
332 | "R_MIPS_16", /* name */ | |
333 | true, /* partial_inplace */ | |
334 | 0xffff, /* src_mask */ | |
335 | 0xffff, /* dst_mask */ | |
336 | false), /* pcrel_offset */ | |
337 | ||
338 | /* 32 bit relocation. */ | |
339 | HOWTO (R_MIPS_32, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 32, /* bitsize */ | |
343 | false, /* pc_relative */ | |
344 | 0, /* bitpos */ | |
345 | complain_overflow_bitfield, /* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* special_function */ | |
347 | "R_MIPS_32", /* name */ | |
348 | true, /* partial_inplace */ | |
349 | 0xffffffff, /* src_mask */ | |
350 | 0xffffffff, /* dst_mask */ | |
351 | false), /* pcrel_offset */ | |
352 | ||
353 | /* 32 bit symbol relative relocation. */ | |
354 | HOWTO (R_MIPS_REL32, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 32, /* bitsize */ | |
358 | false, /* pc_relative */ | |
359 | 0, /* bitpos */ | |
360 | complain_overflow_bitfield, /* complain_on_overflow */ | |
361 | bfd_elf_generic_reloc, /* special_function */ | |
362 | "R_MIPS_REL32", /* name */ | |
363 | true, /* partial_inplace */ | |
364 | 0xffffffff, /* src_mask */ | |
365 | 0xffffffff, /* dst_mask */ | |
366 | false), /* pcrel_offset */ | |
367 | ||
368 | /* 26 bit branch address. */ | |
369 | HOWTO (R_MIPS_26, /* type */ | |
370 | 2, /* rightshift */ | |
371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 26, /* bitsize */ | |
373 | false, /* pc_relative */ | |
374 | 0, /* bitpos */ | |
375 | complain_overflow_dont, /* complain_on_overflow */ | |
376 | /* This needs complex overflow | |
377 | detection, because the upper four | |
378 | bits must match the PC. */ | |
379 | bfd_elf_generic_reloc, /* special_function */ | |
380 | "R_MIPS_26", /* name */ | |
381 | true, /* partial_inplace */ | |
382 | 0x3ffffff, /* src_mask */ | |
383 | 0x3ffffff, /* dst_mask */ | |
384 | false), /* pcrel_offset */ | |
385 | ||
386 | /* High 16 bits of symbol value. */ | |
387 | HOWTO (R_MIPS_HI16, /* type */ | |
388 | 0, /* rightshift */ | |
389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
390 | 16, /* bitsize */ | |
391 | false, /* pc_relative */ | |
392 | 0, /* bitpos */ | |
393 | complain_overflow_dont, /* complain_on_overflow */ | |
394 | _bfd_mips_elf_hi16_reloc, /* special_function */ | |
395 | "R_MIPS_HI16", /* name */ | |
396 | true, /* partial_inplace */ | |
397 | 0xffff, /* src_mask */ | |
398 | 0xffff, /* dst_mask */ | |
399 | false), /* pcrel_offset */ | |
400 | ||
401 | /* Low 16 bits of symbol value. */ | |
402 | HOWTO (R_MIPS_LO16, /* type */ | |
403 | 0, /* rightshift */ | |
404 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
405 | 16, /* bitsize */ | |
406 | false, /* pc_relative */ | |
407 | 0, /* bitpos */ | |
408 | complain_overflow_dont, /* complain_on_overflow */ | |
409 | _bfd_mips_elf_lo16_reloc, /* special_function */ | |
410 | "R_MIPS_LO16", /* name */ | |
411 | true, /* partial_inplace */ | |
412 | 0xffff, /* src_mask */ | |
413 | 0xffff, /* dst_mask */ | |
414 | false), /* pcrel_offset */ | |
415 | ||
416 | /* GP relative reference. */ | |
417 | HOWTO (R_MIPS_GPREL16, /* type */ | |
418 | 0, /* rightshift */ | |
419 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
420 | 16, /* bitsize */ | |
421 | false, /* pc_relative */ | |
422 | 0, /* bitpos */ | |
423 | complain_overflow_signed, /* complain_on_overflow */ | |
424 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
425 | "R_MIPS_GPREL16", /* name */ | |
426 | true, /* partial_inplace */ | |
427 | 0xffff, /* src_mask */ | |
428 | 0xffff, /* dst_mask */ | |
429 | false), /* pcrel_offset */ | |
430 | ||
431 | /* Reference to literal section. */ | |
432 | HOWTO (R_MIPS_LITERAL, /* type */ | |
433 | 0, /* rightshift */ | |
434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
435 | 16, /* bitsize */ | |
436 | false, /* pc_relative */ | |
437 | 0, /* bitpos */ | |
438 | complain_overflow_signed, /* complain_on_overflow */ | |
439 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
440 | "R_MIPS_LITERAL", /* name */ | |
441 | true, /* partial_inplace */ | |
442 | 0xffff, /* src_mask */ | |
443 | 0xffff, /* dst_mask */ | |
444 | false), /* pcrel_offset */ | |
445 | ||
446 | /* Reference to global offset table. */ | |
447 | HOWTO (R_MIPS_GOT16, /* type */ | |
448 | 0, /* rightshift */ | |
449 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
450 | 16, /* bitsize */ | |
451 | false, /* pc_relative */ | |
452 | 0, /* bitpos */ | |
453 | complain_overflow_signed, /* complain_on_overflow */ | |
454 | _bfd_mips_elf_got16_reloc, /* special_function */ | |
455 | "R_MIPS_GOT16", /* name */ | |
456 | false, /* partial_inplace */ | |
457 | 0, /* src_mask */ | |
458 | 0xffff, /* dst_mask */ | |
459 | false), /* pcrel_offset */ | |
460 | ||
461 | /* 16 bit PC relative reference. */ | |
462 | HOWTO (R_MIPS_PC16, /* type */ | |
463 | 0, /* rightshift */ | |
464 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
465 | 16, /* bitsize */ | |
466 | true, /* pc_relative */ | |
467 | 0, /* bitpos */ | |
468 | complain_overflow_signed, /* complain_on_overflow */ | |
469 | bfd_elf_generic_reloc, /* special_function */ | |
470 | "R_MIPS_PC16", /* name */ | |
471 | true, /* partial_inplace */ | |
472 | 0xffff, /* src_mask */ | |
473 | 0xffff, /* dst_mask */ | |
474 | false), /* pcrel_offset */ | |
475 | ||
476 | /* 16 bit call through global offset table. */ | |
477 | /* FIXME: This is not handled correctly. */ | |
478 | HOWTO (R_MIPS_CALL16, /* type */ | |
479 | 0, /* rightshift */ | |
480 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
481 | 16, /* bitsize */ | |
482 | false, /* pc_relative */ | |
483 | 0, /* bitpos */ | |
484 | complain_overflow_signed, /* complain_on_overflow */ | |
485 | bfd_elf_generic_reloc, /* special_function */ | |
486 | "R_MIPS_CALL16", /* name */ | |
487 | false, /* partial_inplace */ | |
488 | 0, /* src_mask */ | |
489 | 0xffff, /* dst_mask */ | |
490 | false), /* pcrel_offset */ | |
491 | ||
492 | /* 32 bit GP relative reference. */ | |
493 | HOWTO (R_MIPS_GPREL32, /* type */ | |
494 | 0, /* rightshift */ | |
495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
496 | 32, /* bitsize */ | |
497 | false, /* pc_relative */ | |
498 | 0, /* bitpos */ | |
499 | complain_overflow_bitfield, /* complain_on_overflow */ | |
500 | _bfd_mips_elf_gprel32_reloc, /* special_function */ | |
501 | "R_MIPS_GPREL32", /* name */ | |
502 | true, /* partial_inplace */ | |
503 | 0xffffffff, /* src_mask */ | |
504 | 0xffffffff, /* dst_mask */ | |
505 | false), /* pcrel_offset */ | |
506 | ||
507 | /* The remaining relocs are defined on Irix 5, although they are | |
508 | not defined by the ABI. */ | |
509 | { 13 }, | |
510 | { 14 }, | |
511 | { 15 }, | |
512 | ||
513 | /* A 5 bit shift field. */ | |
514 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
515 | 0, /* rightshift */ | |
516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 5, /* bitsize */ | |
518 | false, /* pc_relative */ | |
519 | 6, /* bitpos */ | |
520 | complain_overflow_bitfield, /* complain_on_overflow */ | |
521 | bfd_elf_generic_reloc, /* special_function */ | |
522 | "R_MIPS_SHIFT5", /* name */ | |
523 | true, /* partial_inplace */ | |
524 | 0x000007c0, /* src_mask */ | |
525 | 0x000007c0, /* dst_mask */ | |
526 | false), /* pcrel_offset */ | |
527 | ||
528 | /* A 6 bit shift field. */ | |
529 | /* FIXME: This is not handled correctly; a special function is | |
530 | needed to put the most significant bit in the right place. */ | |
531 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
532 | 0, /* rightshift */ | |
533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 6, /* bitsize */ | |
535 | false, /* pc_relative */ | |
536 | 6, /* bitpos */ | |
537 | complain_overflow_bitfield, /* complain_on_overflow */ | |
538 | bfd_elf_generic_reloc, /* special_function */ | |
539 | "R_MIPS_SHIFT6", /* name */ | |
540 | true, /* partial_inplace */ | |
541 | 0x000007c4, /* src_mask */ | |
542 | 0x000007c4, /* dst_mask */ | |
543 | false), /* pcrel_offset */ | |
544 | ||
545 | /* A 64 bit relocation. This is used in 32 bit ELF when addresses | |
546 | are 64 bits long; the upper 32 bits are simply a sign extension. | |
547 | The fields of the howto should be the same as for R_MIPS_32, | |
548 | other than the type, name, and special_function. */ | |
549 | HOWTO (R_MIPS_64, /* type */ | |
550 | 0, /* rightshift */ | |
551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
552 | 32, /* bitsize */ | |
553 | false, /* pc_relative */ | |
554 | 0, /* bitpos */ | |
555 | complain_overflow_bitfield, /* complain_on_overflow */ | |
556 | mips32_64bit_reloc, /* special_function */ | |
557 | "R_MIPS_64", /* name */ | |
558 | true, /* partial_inplace */ | |
559 | 0xffffffff, /* src_mask */ | |
560 | 0xffffffff, /* dst_mask */ | |
561 | false), /* pcrel_offset */ | |
562 | ||
563 | /* Displacement in the global offset table. */ | |
564 | /* FIXME: Not handled correctly. */ | |
565 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
566 | 0, /* rightshift */ | |
567 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
568 | 16, /* bitsize */ | |
569 | false, /* pc_relative */ | |
570 | 0, /* bitpos */ | |
571 | complain_overflow_bitfield, /* complain_on_overflow */ | |
572 | bfd_elf_generic_reloc, /* special_function */ | |
573 | "R_MIPS_GOT_DISP", /* name */ | |
574 | true, /* partial_inplace */ | |
575 | 0x0000ffff, /* src_mask */ | |
576 | 0x0000ffff, /* dst_mask */ | |
577 | false), /* pcrel_offset */ | |
578 | ||
579 | /* Displacement to page pointer in the global offset table. */ | |
580 | /* FIXME: Not handled correctly. */ | |
581 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
582 | 0, /* rightshift */ | |
583 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
584 | 16, /* bitsize */ | |
585 | false, /* pc_relative */ | |
586 | 0, /* bitpos */ | |
587 | complain_overflow_bitfield, /* complain_on_overflow */ | |
588 | bfd_elf_generic_reloc, /* special_function */ | |
589 | "R_MIPS_GOT_PAGE", /* name */ | |
590 | true, /* partial_inplace */ | |
591 | 0x0000ffff, /* src_mask */ | |
592 | 0x0000ffff, /* dst_mask */ | |
593 | false), /* pcrel_offset */ | |
594 | ||
595 | /* Offset from page pointer in the global offset table. */ | |
596 | /* FIXME: Not handled correctly. */ | |
597 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
598 | 0, /* rightshift */ | |
599 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
600 | 16, /* bitsize */ | |
601 | false, /* pc_relative */ | |
602 | 0, /* bitpos */ | |
603 | complain_overflow_bitfield, /* complain_on_overflow */ | |
604 | bfd_elf_generic_reloc, /* special_function */ | |
605 | "R_MIPS_GOT_OFST", /* name */ | |
606 | true, /* partial_inplace */ | |
607 | 0x0000ffff, /* src_mask */ | |
608 | 0x0000ffff, /* dst_mask */ | |
609 | false), /* pcrel_offset */ | |
610 | ||
611 | /* High 16 bits of displacement in global offset table. */ | |
612 | /* FIXME: Not handled correctly. */ | |
613 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
614 | 0, /* rightshift */ | |
615 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
616 | 16, /* bitsize */ | |
617 | false, /* pc_relative */ | |
618 | 0, /* bitpos */ | |
619 | complain_overflow_dont, /* complain_on_overflow */ | |
620 | bfd_elf_generic_reloc, /* special_function */ | |
621 | "R_MIPS_GOT_HI16", /* name */ | |
622 | true, /* partial_inplace */ | |
623 | 0x0000ffff, /* src_mask */ | |
624 | 0x0000ffff, /* dst_mask */ | |
625 | false), /* pcrel_offset */ | |
626 | ||
627 | /* Low 16 bits of displacement in global offset table. */ | |
628 | /* FIXME: Not handled correctly. */ | |
629 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 16, /* bitsize */ | |
633 | false, /* pc_relative */ | |
634 | 0, /* bitpos */ | |
635 | complain_overflow_dont, /* complain_on_overflow */ | |
636 | bfd_elf_generic_reloc, /* special_function */ | |
637 | "R_MIPS_GOT_LO16", /* name */ | |
638 | true, /* partial_inplace */ | |
639 | 0x0000ffff, /* src_mask */ | |
640 | 0x0000ffff, /* dst_mask */ | |
641 | false), /* pcrel_offset */ | |
642 | ||
3f830999 MM |
643 | /* 64 bit subtraction. Used in the N32 ABI. */ |
644 | /* FIXME: Not handled correctly. */ | |
645 | HOWTO (R_MIPS_SUB, /* type */ | |
646 | 0, /* rightshift */ | |
647 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
648 | 64, /* bitsize */ | |
649 | false, /* pc_relative */ | |
650 | 0, /* bitpos */ | |
651 | complain_overflow_bitfield, /* complain_on_overflow */ | |
652 | bfd_elf_generic_reloc, /* special_function */ | |
653 | "R_MIPS_SUB", /* name */ | |
654 | true, /* partial_inplace */ | |
655 | MINUS_ONE, /* src_mask */ | |
656 | MINUS_ONE, /* dst_mask */ | |
657 | false), /* pcrel_offset */ | |
252b5132 RH |
658 | |
659 | /* Used to cause the linker to insert and delete instructions? */ | |
660 | { R_MIPS_INSERT_A }, | |
661 | { R_MIPS_INSERT_B }, | |
662 | { R_MIPS_DELETE }, | |
663 | ||
664 | /* Get the higher values of a 64 bit addend. Presumably not used in | |
665 | 32 bit ELF. */ | |
666 | { R_MIPS_HIGHER }, | |
667 | { R_MIPS_HIGHEST }, | |
668 | ||
669 | /* High 16 bits of displacement in global offset table. */ | |
670 | /* FIXME: Not handled correctly. */ | |
671 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
672 | 0, /* rightshift */ | |
673 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
674 | 16, /* bitsize */ | |
675 | false, /* pc_relative */ | |
676 | 0, /* bitpos */ | |
677 | complain_overflow_dont, /* complain_on_overflow */ | |
678 | bfd_elf_generic_reloc, /* special_function */ | |
679 | "R_MIPS_CALL_HI16", /* name */ | |
680 | true, /* partial_inplace */ | |
681 | 0x0000ffff, /* src_mask */ | |
682 | 0x0000ffff, /* dst_mask */ | |
683 | false), /* pcrel_offset */ | |
684 | ||
685 | /* Low 16 bits of displacement in global offset table. */ | |
686 | /* FIXME: Not handled correctly. */ | |
687 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
688 | 0, /* rightshift */ | |
689 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
690 | 16, /* bitsize */ | |
691 | false, /* pc_relative */ | |
692 | 0, /* bitpos */ | |
693 | complain_overflow_dont, /* complain_on_overflow */ | |
694 | bfd_elf_generic_reloc, /* special_function */ | |
695 | "R_MIPS_CALL_LO16", /* name */ | |
696 | true, /* partial_inplace */ | |
697 | 0x0000ffff, /* src_mask */ | |
698 | 0x0000ffff, /* dst_mask */ | |
699 | false), /* pcrel_offset */ | |
700 | ||
701 | { R_MIPS_SCN_DISP }, | |
702 | { R_MIPS_REL16 }, | |
703 | { R_MIPS_ADD_IMMEDIATE }, | |
704 | { R_MIPS_PJUMP }, | |
d2905643 MM |
705 | { R_MIPS_RELGOT }, |
706 | ||
707 | /* Protected jump conversion. This is an optimization hint. No | |
708 | relocation is required for correctness. */ | |
709 | HOWTO (R_MIPS_JALR, /* type */ | |
710 | 0, /* rightshift */ | |
711 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
712 | 0, /* bitsize */ | |
713 | false, /* pc_relative */ | |
714 | 0, /* bitpos */ | |
715 | complain_overflow_dont, /* complain_on_overflow */ | |
716 | bfd_elf_generic_reloc, /* special_function */ | |
717 | "R_MIPS_JALR", /* name */ | |
718 | false, /* partial_inplace */ | |
719 | 0x00000000, /* src_mask */ | |
720 | 0x00000000, /* dst_mask */ | |
721 | false), /* pcrel_offset */ | |
252b5132 RH |
722 | }; |
723 | ||
724 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This | |
725 | is a hack to make the linker think that we need 64 bit values. */ | |
726 | static reloc_howto_type elf_mips_ctor64_howto = | |
727 | HOWTO (R_MIPS_64, /* type */ | |
728 | 0, /* rightshift */ | |
729 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 32, /* bitsize */ | |
731 | false, /* pc_relative */ | |
732 | 0, /* bitpos */ | |
733 | complain_overflow_signed, /* complain_on_overflow */ | |
734 | mips32_64bit_reloc, /* special_function */ | |
735 | "R_MIPS_64", /* name */ | |
736 | true, /* partial_inplace */ | |
737 | 0xffffffff, /* src_mask */ | |
738 | 0xffffffff, /* dst_mask */ | |
739 | false); /* pcrel_offset */ | |
740 | ||
741 | /* The reloc used for the mips16 jump instruction. */ | |
742 | static reloc_howto_type elf_mips16_jump_howto = | |
743 | HOWTO (R_MIPS16_26, /* type */ | |
744 | 2, /* rightshift */ | |
745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 26, /* bitsize */ | |
747 | false, /* pc_relative */ | |
748 | 0, /* bitpos */ | |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
750 | /* This needs complex overflow | |
751 | detection, because the upper four | |
752 | bits must match the PC. */ | |
753 | mips16_jump_reloc, /* special_function */ | |
754 | "R_MIPS16_26", /* name */ | |
755 | true, /* partial_inplace */ | |
756 | 0x3ffffff, /* src_mask */ | |
757 | 0x3ffffff, /* dst_mask */ | |
758 | false); /* pcrel_offset */ | |
759 | ||
760 | /* The reloc used for the mips16 gprel instruction. The src_mask and | |
761 | dsk_mask for this howto do not reflect the actual instruction, in | |
762 | which the value is not contiguous; the masks are for the | |
763 | convenience of the relocate_section routine. */ | |
764 | static reloc_howto_type elf_mips16_gprel_howto = | |
765 | HOWTO (R_MIPS16_GPREL, /* type */ | |
766 | 0, /* rightshift */ | |
767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
768 | 16, /* bitsize */ | |
769 | false, /* pc_relative */ | |
770 | 0, /* bitpos */ | |
771 | complain_overflow_signed, /* complain_on_overflow */ | |
772 | mips16_gprel_reloc, /* special_function */ | |
773 | "R_MIPS16_GPREL", /* name */ | |
774 | true, /* partial_inplace */ | |
775 | 0xffff, /* src_mask */ | |
776 | 0xffff, /* dst_mask */ | |
777 | false); /* pcrel_offset */ | |
778 | ||
779 | ||
780 | /* GNU extension to record C++ vtable hierarchy */ | |
781 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = | |
782 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ | |
783 | 0, /* rightshift */ | |
784 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
785 | 0, /* bitsize */ | |
786 | false, /* pc_relative */ | |
787 | 0, /* bitpos */ | |
788 | complain_overflow_dont, /* complain_on_overflow */ | |
789 | NULL, /* special_function */ | |
790 | "R_MIPS_GNU_VTINHERIT", /* name */ | |
791 | false, /* partial_inplace */ | |
792 | 0, /* src_mask */ | |
793 | 0, /* dst_mask */ | |
794 | false); /* pcrel_offset */ | |
795 | ||
796 | /* GNU extension to record C++ vtable member usage */ | |
797 | static reloc_howto_type elf_mips_gnu_vtentry_howto = | |
798 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ | |
799 | 0, /* rightshift */ | |
800 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 0, /* bitsize */ | |
802 | false, /* pc_relative */ | |
803 | 0, /* bitpos */ | |
804 | complain_overflow_dont, /* complain_on_overflow */ | |
805 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
806 | "R_MIPS_GNU_VTENTRY", /* name */ | |
807 | false, /* partial_inplace */ | |
808 | 0, /* src_mask */ | |
809 | 0, /* dst_mask */ | |
810 | false); /* pcrel_offset */ | |
811 | ||
812 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination | |
813 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to | |
814 | the HI16. Here we just save the information we need; we do the | |
815 | actual relocation when we see the LO16. MIPS ELF requires that the | |
816 | LO16 immediately follow the HI16. As a GNU extension, we permit an | |
817 | arbitrary number of HI16 relocs to be associated with a single LO16 | |
818 | reloc. This extension permits gcc to output the HI and LO relocs | |
819 | itself. */ | |
820 | ||
821 | struct mips_hi16 | |
822 | { | |
823 | struct mips_hi16 *next; | |
824 | bfd_byte *addr; | |
825 | bfd_vma addend; | |
826 | }; | |
827 | ||
828 | /* FIXME: This should not be a static variable. */ | |
829 | ||
830 | static struct mips_hi16 *mips_hi16_list; | |
831 | ||
832 | bfd_reloc_status_type | |
833 | _bfd_mips_elf_hi16_reloc (abfd, | |
834 | reloc_entry, | |
835 | symbol, | |
836 | data, | |
837 | input_section, | |
838 | output_bfd, | |
839 | error_message) | |
840 | bfd *abfd; | |
841 | arelent *reloc_entry; | |
842 | asymbol *symbol; | |
843 | PTR data; | |
844 | asection *input_section; | |
845 | bfd *output_bfd; | |
846 | char **error_message; | |
847 | { | |
848 | bfd_reloc_status_type ret; | |
849 | bfd_vma relocation; | |
850 | struct mips_hi16 *n; | |
851 | ||
852 | /* If we're relocating, and this an external symbol, we don't want | |
853 | to change anything. */ | |
854 | if (output_bfd != (bfd *) NULL | |
855 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
856 | && reloc_entry->addend == 0) | |
857 | { | |
858 | reloc_entry->address += input_section->output_offset; | |
859 | return bfd_reloc_ok; | |
860 | } | |
861 | ||
862 | ret = bfd_reloc_ok; | |
863 | ||
864 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
865 | { | |
866 | boolean relocateable; | |
867 | bfd_vma gp; | |
868 | ||
869 | if (ret == bfd_reloc_undefined) | |
870 | abort (); | |
871 | ||
872 | if (output_bfd != NULL) | |
873 | relocateable = true; | |
874 | else | |
875 | { | |
876 | relocateable = false; | |
877 | output_bfd = symbol->section->output_section->owner; | |
878 | } | |
879 | ||
880 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
881 | error_message, &gp); | |
882 | if (ret != bfd_reloc_ok) | |
883 | return ret; | |
884 | ||
885 | relocation = gp - reloc_entry->address; | |
886 | } | |
887 | else | |
888 | { | |
889 | if (bfd_is_und_section (symbol->section) | |
890 | && output_bfd == (bfd *) NULL) | |
891 | ret = bfd_reloc_undefined; | |
892 | ||
893 | if (bfd_is_com_section (symbol->section)) | |
894 | relocation = 0; | |
895 | else | |
896 | relocation = symbol->value; | |
897 | } | |
898 | ||
899 | relocation += symbol->section->output_section->vma; | |
900 | relocation += symbol->section->output_offset; | |
901 | relocation += reloc_entry->addend; | |
902 | ||
903 | if (reloc_entry->address > input_section->_cooked_size) | |
904 | return bfd_reloc_outofrange; | |
905 | ||
906 | /* Save the information, and let LO16 do the actual relocation. */ | |
907 | n = (struct mips_hi16 *) bfd_malloc (sizeof *n); | |
908 | if (n == NULL) | |
909 | return bfd_reloc_outofrange; | |
910 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
911 | n->addend = relocation; | |
912 | n->next = mips_hi16_list; | |
913 | mips_hi16_list = n; | |
914 | ||
915 | if (output_bfd != (bfd *) NULL) | |
916 | reloc_entry->address += input_section->output_offset; | |
917 | ||
918 | return ret; | |
919 | } | |
920 | ||
921 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit | |
922 | inplace relocation; this function exists in order to do the | |
923 | R_MIPS_HI16 relocation described above. */ | |
924 | ||
925 | bfd_reloc_status_type | |
926 | _bfd_mips_elf_lo16_reloc (abfd, | |
927 | reloc_entry, | |
928 | symbol, | |
929 | data, | |
930 | input_section, | |
931 | output_bfd, | |
932 | error_message) | |
933 | bfd *abfd; | |
934 | arelent *reloc_entry; | |
935 | asymbol *symbol; | |
936 | PTR data; | |
937 | asection *input_section; | |
938 | bfd *output_bfd; | |
939 | char **error_message; | |
940 | { | |
941 | arelent gp_disp_relent; | |
942 | ||
943 | if (mips_hi16_list != NULL) | |
944 | { | |
945 | struct mips_hi16 *l; | |
946 | ||
947 | l = mips_hi16_list; | |
948 | while (l != NULL) | |
949 | { | |
950 | unsigned long insn; | |
951 | unsigned long val; | |
952 | unsigned long vallo; | |
953 | struct mips_hi16 *next; | |
954 | ||
955 | /* Do the HI16 relocation. Note that we actually don't need | |
956 | to know anything about the LO16 itself, except where to | |
957 | find the low 16 bits of the addend needed by the LO16. */ | |
958 | insn = bfd_get_32 (abfd, l->addr); | |
959 | vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address) | |
960 | & 0xffff); | |
961 | val = ((insn & 0xffff) << 16) + vallo; | |
962 | val += l->addend; | |
963 | ||
964 | /* The low order 16 bits are always treated as a signed | |
965 | value. Therefore, a negative value in the low order bits | |
966 | requires an adjustment in the high order bits. We need | |
967 | to make this adjustment in two ways: once for the bits we | |
968 | took from the data, and once for the bits we are putting | |
969 | back in to the data. */ | |
970 | if ((vallo & 0x8000) != 0) | |
971 | val -= 0x10000; | |
972 | if ((val & 0x8000) != 0) | |
973 | val += 0x10000; | |
974 | ||
975 | insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff); | |
976 | bfd_put_32 (abfd, insn, l->addr); | |
977 | ||
978 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
979 | { | |
980 | gp_disp_relent = *reloc_entry; | |
981 | reloc_entry = &gp_disp_relent; | |
982 | reloc_entry->addend = l->addend; | |
983 | } | |
984 | ||
985 | next = l->next; | |
986 | free (l); | |
987 | l = next; | |
988 | } | |
989 | ||
990 | mips_hi16_list = NULL; | |
991 | } | |
992 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
993 | { | |
994 | bfd_reloc_status_type ret; | |
995 | bfd_vma gp, relocation; | |
996 | ||
997 | /* FIXME: Does this case ever occur? */ | |
998 | ||
999 | ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); | |
1000 | if (ret != bfd_reloc_ok) | |
1001 | return ret; | |
1002 | ||
1003 | relocation = gp - reloc_entry->address; | |
1004 | relocation += symbol->section->output_section->vma; | |
1005 | relocation += symbol->section->output_offset; | |
1006 | relocation += reloc_entry->addend; | |
1007 | ||
1008 | if (reloc_entry->address > input_section->_cooked_size) | |
1009 | return bfd_reloc_outofrange; | |
1010 | ||
1011 | gp_disp_relent = *reloc_entry; | |
1012 | reloc_entry = &gp_disp_relent; | |
1013 | reloc_entry->addend = relocation - 4; | |
1014 | } | |
1015 | ||
1016 | /* Now do the LO16 reloc in the usual way. */ | |
1017 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1018 | input_section, output_bfd, error_message); | |
1019 | } | |
1020 | ||
1021 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset | |
1022 | table used for PIC code. If the symbol is an external symbol, the | |
1023 | instruction is modified to contain the offset of the appropriate | |
1024 | entry in the global offset table. If the symbol is a section | |
1025 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
1026 | addends are combined to form the real addend against the section | |
1027 | symbol; the GOT16 is modified to contain the offset of an entry in | |
1028 | the global offset table, and the LO16 is modified to offset it | |
1029 | appropriately. Thus an offset larger than 16 bits requires a | |
1030 | modified value in the global offset table. | |
1031 | ||
1032 | This implementation suffices for the assembler, but the linker does | |
1033 | not yet know how to create global offset tables. */ | |
1034 | ||
1035 | bfd_reloc_status_type | |
1036 | _bfd_mips_elf_got16_reloc (abfd, | |
1037 | reloc_entry, | |
1038 | symbol, | |
1039 | data, | |
1040 | input_section, | |
1041 | output_bfd, | |
1042 | error_message) | |
1043 | bfd *abfd; | |
1044 | arelent *reloc_entry; | |
1045 | asymbol *symbol; | |
1046 | PTR data; | |
1047 | asection *input_section; | |
1048 | bfd *output_bfd; | |
1049 | char **error_message; | |
1050 | { | |
1051 | /* If we're relocating, and this an external symbol, we don't want | |
1052 | to change anything. */ | |
1053 | if (output_bfd != (bfd *) NULL | |
1054 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1055 | && reloc_entry->addend == 0) | |
1056 | { | |
1057 | reloc_entry->address += input_section->output_offset; | |
1058 | return bfd_reloc_ok; | |
1059 | } | |
1060 | ||
1061 | /* If we're relocating, and this is a local symbol, we can handle it | |
1062 | just like HI16. */ | |
1063 | if (output_bfd != (bfd *) NULL | |
1064 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
1065 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
1066 | input_section, output_bfd, error_message); | |
1067 | ||
1068 | abort (); | |
1069 | } | |
1070 | ||
1071 | /* We have to figure out the gp value, so that we can adjust the | |
1072 | symbol value correctly. We look up the symbol _gp in the output | |
1073 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1074 | target data. We don't need to adjust the symbol value for an | |
1075 | external symbol if we are producing relocateable output. */ | |
1076 | ||
1077 | static bfd_reloc_status_type | |
1078 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) | |
1079 | bfd *output_bfd; | |
1080 | asymbol *symbol; | |
1081 | boolean relocateable; | |
1082 | char **error_message; | |
1083 | bfd_vma *pgp; | |
1084 | { | |
1085 | if (bfd_is_und_section (symbol->section) | |
1086 | && ! relocateable) | |
1087 | { | |
1088 | *pgp = 0; | |
1089 | return bfd_reloc_undefined; | |
1090 | } | |
1091 | ||
1092 | *pgp = _bfd_get_gp_value (output_bfd); | |
1093 | if (*pgp == 0 | |
1094 | && (! relocateable | |
1095 | || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
1096 | { | |
1097 | if (relocateable) | |
1098 | { | |
1099 | /* Make up a value. */ | |
1100 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1101 | _bfd_set_gp_value (output_bfd, *pgp); | |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | unsigned int count; | |
1106 | asymbol **sym; | |
1107 | unsigned int i; | |
1108 | ||
1109 | count = bfd_get_symcount (output_bfd); | |
1110 | sym = bfd_get_outsymbols (output_bfd); | |
1111 | ||
1112 | if (sym == (asymbol **) NULL) | |
1113 | i = count; | |
1114 | else | |
1115 | { | |
1116 | for (i = 0; i < count; i++, sym++) | |
1117 | { | |
1118 | register CONST char *name; | |
1119 | ||
1120 | name = bfd_asymbol_name (*sym); | |
1121 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1122 | { | |
1123 | *pgp = bfd_asymbol_value (*sym); | |
1124 | _bfd_set_gp_value (output_bfd, *pgp); | |
1125 | break; | |
1126 | } | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | if (i >= count) | |
1131 | { | |
1132 | /* Only get the error once. */ | |
1133 | *pgp = 4; | |
1134 | _bfd_set_gp_value (output_bfd, *pgp); | |
1135 | *error_message = | |
1136 | (char *) _("GP relative relocation when _gp not defined"); | |
1137 | return bfd_reloc_dangerous; | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | return bfd_reloc_ok; | |
1143 | } | |
1144 | ||
1145 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must | |
1146 | become the offset from the gp register. This function also handles | |
1147 | R_MIPS_LITERAL relocations, although those can be handled more | |
1148 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
1149 | merged. */ | |
1150 | ||
1151 | static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *, | |
1152 | arelent *, asection *, | |
1153 | boolean, PTR, bfd_vma)); | |
1154 | ||
1155 | bfd_reloc_status_type | |
1156 | _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1157 | output_bfd, error_message) | |
1158 | bfd *abfd; | |
1159 | arelent *reloc_entry; | |
1160 | asymbol *symbol; | |
1161 | PTR data; | |
1162 | asection *input_section; | |
1163 | bfd *output_bfd; | |
1164 | char **error_message; | |
1165 | { | |
1166 | boolean relocateable; | |
1167 | bfd_reloc_status_type ret; | |
1168 | bfd_vma gp; | |
1169 | ||
1170 | /* If we're relocating, and this is an external symbol with no | |
1171 | addend, we don't want to change anything. We will only have an | |
1172 | addend if this is a newly created reloc, not read from an ELF | |
1173 | file. */ | |
1174 | if (output_bfd != (bfd *) NULL | |
1175 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1176 | && reloc_entry->addend == 0) | |
1177 | { | |
1178 | reloc_entry->address += input_section->output_offset; | |
1179 | return bfd_reloc_ok; | |
1180 | } | |
1181 | ||
1182 | if (output_bfd != (bfd *) NULL) | |
1183 | relocateable = true; | |
1184 | else | |
1185 | { | |
1186 | relocateable = false; | |
1187 | output_bfd = symbol->section->output_section->owner; | |
1188 | } | |
1189 | ||
1190 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, | |
1191 | &gp); | |
1192 | if (ret != bfd_reloc_ok) | |
1193 | return ret; | |
1194 | ||
1195 | return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
1196 | relocateable, data, gp); | |
1197 | } | |
1198 | ||
1199 | static bfd_reloc_status_type | |
1200 | gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1201 | gp) | |
1202 | bfd *abfd; | |
1203 | asymbol *symbol; | |
1204 | arelent *reloc_entry; | |
1205 | asection *input_section; | |
1206 | boolean relocateable; | |
1207 | PTR data; | |
1208 | bfd_vma gp; | |
1209 | { | |
1210 | bfd_vma relocation; | |
1211 | unsigned long insn; | |
1212 | unsigned long val; | |
1213 | ||
1214 | if (bfd_is_com_section (symbol->section)) | |
1215 | relocation = 0; | |
1216 | else | |
1217 | relocation = symbol->value; | |
1218 | ||
1219 | relocation += symbol->section->output_section->vma; | |
1220 | relocation += symbol->section->output_offset; | |
1221 | ||
1222 | if (reloc_entry->address > input_section->_cooked_size) | |
1223 | return bfd_reloc_outofrange; | |
1224 | ||
1225 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1226 | ||
1227 | /* Set val to the offset into the section or symbol. */ | |
1228 | if (reloc_entry->howto->src_mask == 0) | |
1229 | { | |
1230 | /* This case occurs with the 64-bit MIPS ELF ABI. */ | |
1231 | val = reloc_entry->addend; | |
1232 | } | |
1233 | else | |
1234 | { | |
1235 | val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; | |
1236 | if (val & 0x8000) | |
1237 | val -= 0x10000; | |
1238 | } | |
1239 | ||
1240 | /* Adjust val for the final section location and GP value. If we | |
1241 | are producing relocateable output, we don't want to do this for | |
1242 | an external symbol. */ | |
1243 | if (! relocateable | |
1244 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1245 | val += relocation - gp; | |
1246 | ||
1247 | insn = (insn &~ 0xffff) | (val & 0xffff); | |
1248 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
1249 | ||
1250 | if (relocateable) | |
1251 | reloc_entry->address += input_section->output_offset; | |
1252 | ||
1253 | /* Make sure it fit in 16 bits. */ | |
1254 | if (val >= 0x8000 && val < 0xffff8000) | |
1255 | return bfd_reloc_overflow; | |
1256 | ||
1257 | return bfd_reloc_ok; | |
1258 | } | |
1259 | ||
1260 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset | |
1261 | from the gp register? XXX */ | |
1262 | ||
1263 | static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, | |
1264 | arelent *, asection *, | |
1265 | boolean, PTR, bfd_vma)); | |
1266 | ||
1267 | bfd_reloc_status_type | |
1268 | _bfd_mips_elf_gprel32_reloc (abfd, | |
1269 | reloc_entry, | |
1270 | symbol, | |
1271 | data, | |
1272 | input_section, | |
1273 | output_bfd, | |
1274 | error_message) | |
1275 | bfd *abfd; | |
1276 | arelent *reloc_entry; | |
1277 | asymbol *symbol; | |
1278 | PTR data; | |
1279 | asection *input_section; | |
1280 | bfd *output_bfd; | |
1281 | char **error_message; | |
1282 | { | |
1283 | boolean relocateable; | |
1284 | bfd_reloc_status_type ret; | |
1285 | bfd_vma gp; | |
1286 | ||
1287 | /* If we're relocating, and this is an external symbol with no | |
1288 | addend, we don't want to change anything. We will only have an | |
1289 | addend if this is a newly created reloc, not read from an ELF | |
1290 | file. */ | |
1291 | if (output_bfd != (bfd *) NULL | |
1292 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1293 | && reloc_entry->addend == 0) | |
1294 | { | |
1295 | *error_message = (char *) | |
1296 | _("32bits gp relative relocation occurs for an external symbol"); | |
1297 | return bfd_reloc_outofrange; | |
1298 | } | |
1299 | ||
1300 | if (output_bfd != (bfd *) NULL) | |
1301 | { | |
1302 | relocateable = true; | |
1303 | gp = _bfd_get_gp_value (output_bfd); | |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | relocateable = false; | |
1308 | output_bfd = symbol->section->output_section->owner; | |
1309 | ||
1310 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
1311 | error_message, &gp); | |
1312 | if (ret != bfd_reloc_ok) | |
1313 | return ret; | |
1314 | } | |
1315 | ||
1316 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, | |
1317 | relocateable, data, gp); | |
1318 | } | |
1319 | ||
1320 | static bfd_reloc_status_type | |
1321 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1322 | gp) | |
1323 | bfd *abfd; | |
1324 | asymbol *symbol; | |
1325 | arelent *reloc_entry; | |
1326 | asection *input_section; | |
1327 | boolean relocateable; | |
1328 | PTR data; | |
1329 | bfd_vma gp; | |
1330 | { | |
1331 | bfd_vma relocation; | |
1332 | unsigned long val; | |
1333 | ||
1334 | if (bfd_is_com_section (symbol->section)) | |
1335 | relocation = 0; | |
1336 | else | |
1337 | relocation = symbol->value; | |
1338 | ||
1339 | relocation += symbol->section->output_section->vma; | |
1340 | relocation += symbol->section->output_offset; | |
1341 | ||
1342 | if (reloc_entry->address > input_section->_cooked_size) | |
1343 | return bfd_reloc_outofrange; | |
1344 | ||
1345 | if (reloc_entry->howto->src_mask == 0) | |
1346 | { | |
1347 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
1348 | val = 0; | |
1349 | } | |
1350 | else | |
1351 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1352 | ||
1353 | /* Set val to the offset into the section or symbol. */ | |
1354 | val += reloc_entry->addend; | |
1355 | ||
1356 | /* Adjust val for the final section location and GP value. If we | |
1357 | are producing relocateable output, we don't want to do this for | |
1358 | an external symbol. */ | |
1359 | if (! relocateable | |
1360 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1361 | val += relocation - gp; | |
1362 | ||
1363 | bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); | |
1364 | ||
1365 | if (relocateable) | |
1366 | reloc_entry->address += input_section->output_offset; | |
1367 | ||
1368 | return bfd_reloc_ok; | |
1369 | } | |
1370 | ||
1371 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are | |
1372 | generated when addreses are 64 bits. The upper 32 bits are a simle | |
1373 | sign extension. */ | |
1374 | ||
1375 | static bfd_reloc_status_type | |
1376 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1377 | output_bfd, error_message) | |
1378 | bfd *abfd; | |
1379 | arelent *reloc_entry; | |
1380 | asymbol *symbol; | |
1381 | PTR data; | |
1382 | asection *input_section; | |
1383 | bfd *output_bfd; | |
1384 | char **error_message; | |
1385 | { | |
1386 | bfd_reloc_status_type r; | |
1387 | arelent reloc32; | |
1388 | unsigned long val; | |
1389 | bfd_size_type addr; | |
1390 | ||
1391 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1392 | input_section, output_bfd, error_message); | |
1393 | if (r != bfd_reloc_continue) | |
1394 | return r; | |
1395 | ||
1396 | /* Do a normal 32 bit relocation on the lower 32 bits. */ | |
1397 | reloc32 = *reloc_entry; | |
1398 | if (bfd_big_endian (abfd)) | |
1399 | reloc32.address += 4; | |
1400 | reloc32.howto = &elf_mips_howto_table[R_MIPS_32]; | |
1401 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, | |
1402 | output_bfd, error_message); | |
1403 | ||
1404 | /* Sign extend into the upper 32 bits. */ | |
1405 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
1406 | if ((val & 0x80000000) != 0) | |
1407 | val = 0xffffffff; | |
1408 | else | |
1409 | val = 0; | |
1410 | addr = reloc_entry->address; | |
1411 | if (bfd_little_endian (abfd)) | |
1412 | addr += 4; | |
1413 | bfd_put_32 (abfd, val, (bfd_byte *) data + addr); | |
1414 | ||
1415 | return r; | |
1416 | } | |
1417 | ||
1418 | /* Handle a mips16 jump. */ | |
1419 | ||
1420 | static bfd_reloc_status_type | |
1421 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1422 | output_bfd, error_message) | |
1423 | bfd *abfd; | |
1424 | arelent *reloc_entry; | |
1425 | asymbol *symbol; | |
1426 | PTR data; | |
1427 | asection *input_section; | |
1428 | bfd *output_bfd; | |
1429 | char **error_message; | |
1430 | { | |
1431 | if (output_bfd != (bfd *) NULL | |
1432 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1433 | && reloc_entry->addend == 0) | |
1434 | { | |
1435 | reloc_entry->address += input_section->output_offset; | |
1436 | return bfd_reloc_ok; | |
1437 | } | |
1438 | ||
1439 | /* FIXME. */ | |
1440 | { | |
1441 | static boolean warned; | |
1442 | ||
1443 | if (! warned) | |
1444 | (*_bfd_error_handler) | |
1445 | (_("Linking mips16 objects into %s format is not supported"), | |
1446 | bfd_get_target (input_section->output_section->owner)); | |
1447 | warned = true; | |
1448 | } | |
1449 | ||
1450 | return bfd_reloc_undefined; | |
1451 | } | |
1452 | ||
1453 | /* Handle a mips16 GP relative reloc. */ | |
1454 | ||
1455 | static bfd_reloc_status_type | |
1456 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1457 | output_bfd, error_message) | |
1458 | bfd *abfd; | |
1459 | arelent *reloc_entry; | |
1460 | asymbol *symbol; | |
1461 | PTR data; | |
1462 | asection *input_section; | |
1463 | bfd *output_bfd; | |
1464 | char **error_message; | |
1465 | { | |
1466 | boolean relocateable; | |
1467 | bfd_reloc_status_type ret; | |
1468 | bfd_vma gp; | |
1469 | unsigned short extend, insn; | |
1470 | unsigned long final; | |
1471 | ||
1472 | /* If we're relocating, and this is an external symbol with no | |
1473 | addend, we don't want to change anything. We will only have an | |
1474 | addend if this is a newly created reloc, not read from an ELF | |
1475 | file. */ | |
1476 | if (output_bfd != NULL | |
1477 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1478 | && reloc_entry->addend == 0) | |
1479 | { | |
1480 | reloc_entry->address += input_section->output_offset; | |
1481 | return bfd_reloc_ok; | |
1482 | } | |
1483 | ||
1484 | if (output_bfd != NULL) | |
1485 | relocateable = true; | |
1486 | else | |
1487 | { | |
1488 | relocateable = false; | |
1489 | output_bfd = symbol->section->output_section->owner; | |
1490 | } | |
1491 | ||
1492 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, | |
1493 | &gp); | |
1494 | if (ret != bfd_reloc_ok) | |
1495 | return ret; | |
1496 | ||
1497 | if (reloc_entry->address > input_section->_cooked_size) | |
1498 | return bfd_reloc_outofrange; | |
1499 | ||
1500 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
1501 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1502 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); | |
1503 | ||
1504 | /* Stuff the current addend back as a 32 bit value, do the usual | |
1505 | relocation, and then clean up. */ | |
1506 | bfd_put_32 (abfd, | |
1507 | (((extend & 0x1f) << 11) | |
1508 | | (extend & 0x7e0) | |
1509 | | (insn & 0x1f)), | |
1510 | (bfd_byte *) data + reloc_entry->address); | |
1511 | ||
1512 | ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
1513 | relocateable, data, gp); | |
1514 | ||
1515 | final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1516 | bfd_put_16 (abfd, | |
1517 | ((extend & 0xf800) | |
1518 | | ((final >> 11) & 0x1f) | |
1519 | | (final & 0x7e0)), | |
1520 | (bfd_byte *) data + reloc_entry->address); | |
1521 | bfd_put_16 (abfd, | |
1522 | ((insn & 0xffe0) | |
1523 | | (final & 0x1f)), | |
1524 | (bfd_byte *) data + reloc_entry->address + 2); | |
1525 | ||
1526 | return ret; | |
1527 | } | |
1528 | ||
1529 | /* Return the ISA for a MIPS e_flags value. */ | |
1530 | ||
1531 | static INLINE int | |
1532 | elf_mips_isa (flags) | |
1533 | flagword flags; | |
1534 | { | |
1535 | switch (flags & EF_MIPS_ARCH) | |
1536 | { | |
1537 | case E_MIPS_ARCH_1: | |
1538 | return 1; | |
1539 | case E_MIPS_ARCH_2: | |
1540 | return 2; | |
1541 | case E_MIPS_ARCH_3: | |
1542 | return 3; | |
1543 | case E_MIPS_ARCH_4: | |
1544 | return 4; | |
1545 | } | |
1546 | return 4; | |
1547 | } | |
1548 | ||
1549 | /* Return the MACH for a MIPS e_flags value. */ | |
1550 | ||
1551 | static INLINE int | |
1552 | elf_mips_mach (flags) | |
1553 | flagword flags; | |
1554 | { | |
1555 | switch (flags & EF_MIPS_MACH) | |
1556 | { | |
1557 | case E_MIPS_MACH_3900: | |
1558 | return bfd_mach_mips3900; | |
1559 | ||
1560 | case E_MIPS_MACH_4010: | |
1561 | return bfd_mach_mips4010; | |
1562 | ||
1563 | case E_MIPS_MACH_4100: | |
1564 | return bfd_mach_mips4100; | |
1565 | ||
1566 | case E_MIPS_MACH_4111: | |
1567 | return bfd_mach_mips4111; | |
1568 | ||
1569 | case E_MIPS_MACH_4650: | |
1570 | return bfd_mach_mips4650; | |
1571 | ||
1572 | default: | |
1573 | switch (flags & EF_MIPS_ARCH) | |
1574 | { | |
1575 | default: | |
1576 | case E_MIPS_ARCH_1: | |
1577 | return bfd_mach_mips3000; | |
1578 | break; | |
1579 | ||
1580 | case E_MIPS_ARCH_2: | |
1581 | return bfd_mach_mips6000; | |
1582 | break; | |
1583 | ||
1584 | case E_MIPS_ARCH_3: | |
1585 | return bfd_mach_mips4000; | |
1586 | break; | |
1587 | ||
1588 | case E_MIPS_ARCH_4: | |
1589 | return bfd_mach_mips8000; | |
1590 | break; | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | /* Return printable name for ABI from flagword. */ | |
1598 | ||
1599 | static INLINE char* | |
1600 | elf_mips_abi_name (flags) | |
1601 | flagword flags; | |
1602 | { | |
1603 | switch (flags & EF_MIPS_ABI) | |
1604 | { | |
1605 | case 0: | |
1606 | return "none"; | |
1607 | case E_MIPS_ABI_O32: | |
1608 | return "O32"; | |
1609 | case E_MIPS_ABI_O64: | |
1610 | return "O64"; | |
1611 | case E_MIPS_ABI_EABI32: | |
1612 | return "EABI32"; | |
1613 | case E_MIPS_ABI_EABI64: | |
1614 | return "EABI64"; | |
1615 | default: | |
1616 | return "unknown abi"; | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ | |
1621 | ||
1622 | struct elf_reloc_map { | |
1623 | bfd_reloc_code_real_type bfd_reloc_val; | |
1624 | enum elf_mips_reloc_type elf_reloc_val; | |
1625 | }; | |
1626 | ||
1627 | static CONST struct elf_reloc_map mips_reloc_map[] = | |
1628 | { | |
1629 | { BFD_RELOC_NONE, R_MIPS_NONE, }, | |
1630 | { BFD_RELOC_16, R_MIPS_16 }, | |
1631 | { BFD_RELOC_32, R_MIPS_32 }, | |
1632 | { BFD_RELOC_64, R_MIPS_64 }, | |
1633 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
1634 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1635 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1636 | { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 }, | |
1637 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1638 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
1639 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, | |
1640 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, | |
1641 | { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }, | |
1642 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
1643 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
1644 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
3f830999 MM |
1645 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, |
1646 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, | |
1647 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, | |
1648 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, | |
1649 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } | |
252b5132 RH |
1650 | }; |
1651 | ||
1652 | /* Given a BFD reloc type, return a howto structure. */ | |
1653 | ||
1654 | static reloc_howto_type * | |
1655 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
1656 | bfd *abfd; | |
1657 | bfd_reloc_code_real_type code; | |
1658 | { | |
1659 | unsigned int i; | |
1660 | ||
1661 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
1662 | { | |
1663 | if (mips_reloc_map[i].bfd_reloc_val == code) | |
1664 | return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val]; | |
1665 | } | |
1666 | ||
1667 | switch (code) | |
1668 | { | |
1669 | default: | |
1670 | bfd_set_error (bfd_error_bad_value); | |
1671 | return NULL; | |
1672 | ||
1673 | case BFD_RELOC_CTOR: | |
1674 | /* We need to handle BFD_RELOC_CTOR specially. | |
1675 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the | |
1676 | size of addresses on this architecture. */ | |
1677 | if (bfd_arch_bits_per_address (abfd) == 32) | |
1678 | return &elf_mips_howto_table[(int) R_MIPS_32]; | |
1679 | else | |
1680 | return &elf_mips_ctor64_howto; | |
1681 | ||
1682 | case BFD_RELOC_MIPS16_JMP: | |
1683 | return &elf_mips16_jump_howto; | |
1684 | case BFD_RELOC_MIPS16_GPREL: | |
1685 | return &elf_mips16_gprel_howto; | |
1686 | case BFD_RELOC_VTABLE_INHERIT: | |
1687 | return &elf_mips_gnu_vtinherit_howto; | |
1688 | case BFD_RELOC_VTABLE_ENTRY: | |
1689 | return &elf_mips_gnu_vtentry_howto; | |
1690 | } | |
1691 | } | |
1692 | ||
3f830999 | 1693 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
252b5132 RH |
1694 | |
1695 | static void | |
1696 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
1697 | bfd *abfd; | |
1698 | arelent *cache_ptr; | |
1699 | Elf32_Internal_Rel *dst; | |
1700 | { | |
1701 | unsigned int r_type; | |
1702 | ||
1703 | r_type = ELF32_R_TYPE (dst->r_info); | |
1704 | switch (r_type) | |
1705 | { | |
1706 | case R_MIPS16_26: | |
1707 | cache_ptr->howto = &elf_mips16_jump_howto; | |
1708 | break; | |
1709 | case R_MIPS16_GPREL: | |
1710 | cache_ptr->howto = &elf_mips16_gprel_howto; | |
1711 | break; | |
1712 | case R_MIPS_GNU_VTINHERIT: | |
1713 | cache_ptr->howto = &elf_mips_gnu_vtinherit_howto; | |
1714 | break; | |
1715 | case R_MIPS_GNU_VTENTRY: | |
1716 | cache_ptr->howto = &elf_mips_gnu_vtentry_howto; | |
1717 | break; | |
1718 | ||
1719 | default: | |
1720 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
1721 | cache_ptr->howto = &elf_mips_howto_table[r_type]; | |
1722 | break; | |
1723 | } | |
1724 | ||
1725 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP | |
1726 | value for the object file. We get the addend now, rather than | |
1727 | when we do the relocation, because the symbol manipulations done | |
1728 | by the linker may cause us to lose track of the input BFD. */ | |
1729 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
1730 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
1731 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
1732 | cache_ptr->addend = elf_gp (abfd); | |
1733 | } | |
3f830999 MM |
1734 | |
1735 | /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */ | |
1736 | ||
1737 | static void | |
1738 | mips_info_to_howto_rela (abfd, cache_ptr, dst) | |
1739 | bfd *abfd; | |
1740 | arelent *cache_ptr; | |
1741 | Elf32_Internal_Rela *dst; | |
1742 | { | |
1743 | /* Since an Elf32_Internal_Rel is an initial prefix of an | |
1744 | Elf32_Internal_Rela, we can just use mips_info_to_howto_rel | |
1745 | above. */ | |
1746 | mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst); | |
1747 | ||
1748 | /* If we ever need to do any extra processing with dst->r_addend | |
1749 | (the field omitted in an Elf32_Internal_Rel) we can do it here. */ | |
1750 | } | |
252b5132 RH |
1751 | \f |
1752 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
1753 | routines swap this structure in and out. They are used outside of | |
1754 | BFD, so they are globally visible. */ | |
1755 | ||
1756 | void | |
1757 | bfd_mips_elf32_swap_reginfo_in (abfd, ex, in) | |
1758 | bfd *abfd; | |
1759 | const Elf32_External_RegInfo *ex; | |
1760 | Elf32_RegInfo *in; | |
1761 | { | |
1762 | in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); | |
1763 | in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); | |
1764 | in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); | |
1765 | in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); | |
1766 | in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); | |
1767 | in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value); | |
1768 | } | |
1769 | ||
1770 | void | |
1771 | bfd_mips_elf32_swap_reginfo_out (abfd, in, ex) | |
1772 | bfd *abfd; | |
1773 | const Elf32_RegInfo *in; | |
1774 | Elf32_External_RegInfo *ex; | |
1775 | { | |
1776 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, | |
1777 | (bfd_byte *) ex->ri_gprmask); | |
1778 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], | |
1779 | (bfd_byte *) ex->ri_cprmask[0]); | |
1780 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], | |
1781 | (bfd_byte *) ex->ri_cprmask[1]); | |
1782 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], | |
1783 | (bfd_byte *) ex->ri_cprmask[2]); | |
1784 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], | |
1785 | (bfd_byte *) ex->ri_cprmask[3]); | |
1786 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value, | |
1787 | (bfd_byte *) ex->ri_gp_value); | |
1788 | } | |
1789 | ||
1790 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
1791 | information in an Elf64_Reginfo structure. These routines swap | |
1792 | them in and out. They are globally visible because they are used | |
1793 | outside of BFD. These routines are here so that gas can call them | |
1794 | without worrying about whether the 64 bit ABI has been included. */ | |
1795 | ||
1796 | void | |
1797 | bfd_mips_elf64_swap_reginfo_in (abfd, ex, in) | |
1798 | bfd *abfd; | |
1799 | const Elf64_External_RegInfo *ex; | |
1800 | Elf64_Internal_RegInfo *in; | |
1801 | { | |
1802 | in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); | |
1803 | in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad); | |
1804 | in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); | |
1805 | in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); | |
1806 | in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); | |
1807 | in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); | |
1808 | in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value); | |
1809 | } | |
1810 | ||
1811 | void | |
1812 | bfd_mips_elf64_swap_reginfo_out (abfd, in, ex) | |
1813 | bfd *abfd; | |
1814 | const Elf64_Internal_RegInfo *in; | |
1815 | Elf64_External_RegInfo *ex; | |
1816 | { | |
1817 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, | |
1818 | (bfd_byte *) ex->ri_gprmask); | |
1819 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad, | |
1820 | (bfd_byte *) ex->ri_pad); | |
1821 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], | |
1822 | (bfd_byte *) ex->ri_cprmask[0]); | |
1823 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], | |
1824 | (bfd_byte *) ex->ri_cprmask[1]); | |
1825 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], | |
1826 | (bfd_byte *) ex->ri_cprmask[2]); | |
1827 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], | |
1828 | (bfd_byte *) ex->ri_cprmask[3]); | |
1829 | bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value, | |
1830 | (bfd_byte *) ex->ri_gp_value); | |
1831 | } | |
1832 | ||
1833 | /* Swap an entry in a .gptab section. Note that these routines rely | |
1834 | on the equivalence of the two elements of the union. */ | |
1835 | ||
1836 | static void | |
1837 | bfd_mips_elf32_swap_gptab_in (abfd, ex, in) | |
1838 | bfd *abfd; | |
1839 | const Elf32_External_gptab *ex; | |
1840 | Elf32_gptab *in; | |
1841 | { | |
1842 | in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value); | |
1843 | in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes); | |
1844 | } | |
1845 | ||
1846 | static void | |
1847 | bfd_mips_elf32_swap_gptab_out (abfd, in, ex) | |
1848 | bfd *abfd; | |
1849 | const Elf32_gptab *in; | |
1850 | Elf32_External_gptab *ex; | |
1851 | { | |
1852 | bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, | |
1853 | ex->gt_entry.gt_g_value); | |
1854 | bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, | |
1855 | ex->gt_entry.gt_bytes); | |
1856 | } | |
1857 | ||
1858 | static void | |
1859 | bfd_elf32_swap_compact_rel_out (abfd, in, ex) | |
1860 | bfd *abfd; | |
1861 | const Elf32_compact_rel *in; | |
1862 | Elf32_External_compact_rel *ex; | |
1863 | { | |
1864 | bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1); | |
1865 | bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num); | |
1866 | bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2); | |
1867 | bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset); | |
1868 | bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0); | |
1869 | bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1); | |
1870 | } | |
1871 | ||
1872 | static void | |
1873 | bfd_elf32_swap_crinfo_out (abfd, in, ex) | |
1874 | bfd *abfd; | |
1875 | const Elf32_crinfo *in; | |
1876 | Elf32_External_crinfo *ex; | |
1877 | { | |
1878 | unsigned long l; | |
1879 | ||
1880 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
1881 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
1882 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
1883 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
1884 | bfd_h_put_32 (abfd, (bfd_vma) l, ex->info); | |
1885 | bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst); | |
1886 | bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr); | |
1887 | } | |
1888 | ||
1889 | /* Swap in an options header. */ | |
1890 | ||
1891 | void | |
1892 | bfd_mips_elf_swap_options_in (abfd, ex, in) | |
1893 | bfd *abfd; | |
1894 | const Elf_External_Options *ex; | |
1895 | Elf_Internal_Options *in; | |
1896 | { | |
1897 | in->kind = bfd_h_get_8 (abfd, ex->kind); | |
1898 | in->size = bfd_h_get_8 (abfd, ex->size); | |
1899 | in->section = bfd_h_get_16 (abfd, ex->section); | |
1900 | in->info = bfd_h_get_32 (abfd, ex->info); | |
1901 | } | |
1902 | ||
1903 | /* Swap out an options header. */ | |
1904 | ||
1905 | void | |
1906 | bfd_mips_elf_swap_options_out (abfd, in, ex) | |
1907 | bfd *abfd; | |
1908 | const Elf_Internal_Options *in; | |
1909 | Elf_External_Options *ex; | |
1910 | { | |
1911 | bfd_h_put_8 (abfd, in->kind, ex->kind); | |
1912 | bfd_h_put_8 (abfd, in->size, ex->size); | |
1913 | bfd_h_put_16 (abfd, in->section, ex->section); | |
1914 | bfd_h_put_32 (abfd, in->info, ex->info); | |
1915 | } | |
1916 | \f | |
1917 | /* Determine whether a symbol is global for the purposes of splitting | |
1918 | the symbol table into global symbols and local symbols. At least | |
1919 | on Irix 5, this split must be between section symbols and all other | |
1920 | symbols. On most ELF targets the split is between static symbols | |
1921 | and externally visible symbols. */ | |
1922 | ||
1923 | /*ARGSUSED*/ | |
1924 | static boolean | |
1925 | mips_elf_sym_is_global (abfd, sym) | |
1926 | bfd *abfd; | |
1927 | asymbol *sym; | |
1928 | { | |
1929 | return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false; | |
1930 | } | |
1931 | \f | |
1932 | /* Set the right machine number for a MIPS ELF file. This is used for | |
1933 | both the 32-bit and the 64-bit ABI. */ | |
1934 | ||
1935 | boolean | |
1936 | _bfd_mips_elf_object_p (abfd) | |
1937 | bfd *abfd; | |
1938 | { | |
1939 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, | |
1940 | elf_mips_mach (elf_elfheader (abfd)->e_flags)); | |
1941 | return true; | |
1942 | } | |
1943 | ||
1944 | /* Set the right machine number for a 32-bit MIPS ELF file. */ | |
1945 | ||
1946 | static boolean | |
1947 | mips_elf32_object_p (abfd) | |
1948 | bfd *abfd; | |
1949 | { | |
1950 | /* Irix 5 is broken. Object file symbol tables are not always | |
1951 | sorted correctly such that local symbols precede global symbols, | |
1952 | and the sh_info field in the symbol table is not always right. */ | |
1953 | elf_bad_symtab (abfd) = true; | |
1954 | ||
1955 | return _bfd_mips_elf_object_p (abfd); | |
1956 | } | |
1957 | ||
1958 | /* The final processing done just before writing out a MIPS ELF object | |
1959 | file. This gets the MIPS architecture right based on the machine | |
1960 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
1961 | ||
1962 | /*ARGSUSED*/ | |
1963 | void | |
1964 | _bfd_mips_elf_final_write_processing (abfd, linker) | |
1965 | bfd *abfd; | |
1966 | boolean linker; | |
1967 | { | |
1968 | unsigned long val; | |
1969 | unsigned int i; | |
1970 | Elf_Internal_Shdr **hdrpp; | |
1971 | const char *name; | |
1972 | asection *sec; | |
1973 | ||
1974 | switch (bfd_get_mach (abfd)) | |
1975 | { | |
1976 | default: | |
1977 | case bfd_mach_mips3000: | |
1978 | val = E_MIPS_ARCH_1; | |
1979 | break; | |
1980 | ||
1981 | case bfd_mach_mips3900: | |
1982 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
1983 | break; | |
1984 | ||
1985 | case bfd_mach_mips6000: | |
1986 | val = E_MIPS_ARCH_2; | |
1987 | break; | |
1988 | ||
1989 | case bfd_mach_mips4000: | |
1990 | case bfd_mach_mips4300: | |
1991 | val = E_MIPS_ARCH_3; | |
1992 | break; | |
1993 | ||
1994 | case bfd_mach_mips4010: | |
1995 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
1996 | break; | |
1997 | ||
1998 | case bfd_mach_mips4100: | |
1999 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
2000 | break; | |
2001 | ||
2002 | case bfd_mach_mips4111: | |
2003 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
2004 | break; | |
2005 | ||
2006 | case bfd_mach_mips4650: | |
2007 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
2008 | break; | |
2009 | ||
2010 | case bfd_mach_mips8000: | |
2011 | val = E_MIPS_ARCH_4; | |
2012 | break; | |
2013 | } | |
2014 | ||
2015 | elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); | |
2016 | elf_elfheader (abfd)->e_flags |= val; | |
2017 | ||
2018 | /* Set the sh_info field for .gptab sections and other appropriate | |
2019 | info for each special section. */ | |
2020 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
2021 | i < elf_elfheader (abfd)->e_shnum; | |
2022 | i++, hdrpp++) | |
2023 | { | |
2024 | switch ((*hdrpp)->sh_type) | |
2025 | { | |
2026 | case SHT_MIPS_LIBLIST: | |
2027 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
2028 | if (sec != NULL) | |
2029 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2030 | break; | |
2031 | ||
2032 | case SHT_MIPS_GPTAB: | |
2033 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2034 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2035 | BFD_ASSERT (name != NULL | |
2036 | && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0); | |
2037 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); | |
2038 | BFD_ASSERT (sec != NULL); | |
2039 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
2040 | break; | |
2041 | ||
2042 | case SHT_MIPS_CONTENT: | |
2043 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2044 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2045 | BFD_ASSERT (name != NULL | |
2046 | && strncmp (name, ".MIPS.content", | |
2047 | sizeof ".MIPS.content" - 1) == 0); | |
2048 | sec = bfd_get_section_by_name (abfd, | |
2049 | name + sizeof ".MIPS.content" - 1); | |
2050 | BFD_ASSERT (sec != NULL); | |
3f830999 | 2051 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; |
252b5132 RH |
2052 | break; |
2053 | ||
2054 | case SHT_MIPS_SYMBOL_LIB: | |
2055 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
2056 | if (sec != NULL) | |
2057 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2058 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
2059 | if (sec != NULL) | |
2060 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
2061 | break; | |
2062 | ||
2063 | case SHT_MIPS_EVENTS: | |
2064 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2065 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2066 | BFD_ASSERT (name != NULL); | |
2067 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0) | |
2068 | sec = bfd_get_section_by_name (abfd, | |
2069 | name + sizeof ".MIPS.events" - 1); | |
2070 | else | |
2071 | { | |
2072 | BFD_ASSERT (strncmp (name, ".MIPS.post_rel", | |
2073 | sizeof ".MIPS.post_rel" - 1) == 0); | |
2074 | sec = bfd_get_section_by_name (abfd, | |
2075 | (name | |
2076 | + sizeof ".MIPS.post_rel" - 1)); | |
2077 | } | |
2078 | BFD_ASSERT (sec != NULL); | |
2079 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2080 | break; | |
2081 | ||
2082 | } | |
2083 | } | |
2084 | } | |
2085 | \f | |
2086 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
2087 | ||
2088 | boolean | |
2089 | _bfd_mips_elf_set_private_flags (abfd, flags) | |
2090 | bfd *abfd; | |
2091 | flagword flags; | |
2092 | { | |
2093 | BFD_ASSERT (!elf_flags_init (abfd) | |
2094 | || elf_elfheader (abfd)->e_flags == flags); | |
2095 | ||
2096 | elf_elfheader (abfd)->e_flags = flags; | |
2097 | elf_flags_init (abfd) = true; | |
2098 | return true; | |
2099 | } | |
2100 | ||
2101 | /* Copy backend specific data from one object module to another */ | |
2102 | ||
2103 | boolean | |
2104 | _bfd_mips_elf_copy_private_bfd_data (ibfd, obfd) | |
2105 | bfd *ibfd; | |
2106 | bfd *obfd; | |
2107 | { | |
2108 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2109 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2110 | return true; | |
2111 | ||
2112 | BFD_ASSERT (!elf_flags_init (obfd) | |
2113 | || (elf_elfheader (obfd)->e_flags | |
2114 | == elf_elfheader (ibfd)->e_flags)); | |
2115 | ||
2116 | elf_gp (obfd) = elf_gp (ibfd); | |
2117 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
2118 | elf_flags_init (obfd) = true; | |
2119 | return true; | |
2120 | } | |
2121 | ||
2122 | /* Merge backend specific data from an object file to the output | |
2123 | object file when linking. */ | |
2124 | ||
2125 | boolean | |
2126 | _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd) | |
2127 | bfd *ibfd; | |
2128 | bfd *obfd; | |
2129 | { | |
2130 | flagword old_flags; | |
2131 | flagword new_flags; | |
2132 | boolean ok; | |
2133 | ||
2134 | /* Check if we have the same endianess */ | |
2135 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
2136 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
2137 | { | |
2138 | const char *msg; | |
2139 | ||
2140 | if (bfd_big_endian (ibfd)) | |
2141 | msg = _("%s: compiled for a big endian system and target is little endian"); | |
2142 | else | |
2143 | msg = _("%s: compiled for a little endian system and target is big endian"); | |
2144 | ||
2145 | (*_bfd_error_handler) (msg, bfd_get_filename (ibfd)); | |
2146 | ||
2147 | bfd_set_error (bfd_error_wrong_format); | |
2148 | return false; | |
2149 | } | |
2150 | ||
2151 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2152 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2153 | return true; | |
2154 | ||
2155 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2156 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
2157 | old_flags = elf_elfheader (obfd)->e_flags; | |
2158 | ||
2159 | if (! elf_flags_init (obfd)) | |
2160 | { | |
2161 | elf_flags_init (obfd) = true; | |
2162 | elf_elfheader (obfd)->e_flags = new_flags; | |
2163 | ||
2164 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2165 | && bfd_get_arch_info (obfd)->the_default) | |
2166 | { | |
2167 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
2168 | bfd_get_mach (ibfd))) | |
2169 | return false; | |
2170 | } | |
2171 | ||
2172 | return true; | |
2173 | } | |
2174 | ||
2175 | /* Check flag compatibility. */ | |
2176 | ||
2177 | new_flags &= ~EF_MIPS_NOREORDER; | |
2178 | old_flags &= ~EF_MIPS_NOREORDER; | |
2179 | ||
2180 | if (new_flags == old_flags) | |
2181 | return true; | |
2182 | ||
2183 | ok = true; | |
2184 | ||
2185 | if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC)) | |
2186 | { | |
2187 | new_flags &= ~EF_MIPS_PIC; | |
2188 | old_flags &= ~EF_MIPS_PIC; | |
2189 | (*_bfd_error_handler) | |
2190 | (_("%s: linking PIC files with non-PIC files"), | |
2191 | bfd_get_filename (ibfd)); | |
2192 | ok = false; | |
2193 | } | |
2194 | ||
2195 | if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC)) | |
2196 | { | |
2197 | new_flags &= ~EF_MIPS_CPIC; | |
2198 | old_flags &= ~EF_MIPS_CPIC; | |
2199 | (*_bfd_error_handler) | |
2200 | (_("%s: linking abicalls files with non-abicalls files"), | |
2201 | bfd_get_filename (ibfd)); | |
2202 | ok = false; | |
2203 | } | |
2204 | ||
2205 | /* Compare the ISA's. */ | |
2206 | if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)) | |
2207 | != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))) | |
2208 | { | |
2209 | int new_mach = new_flags & EF_MIPS_MACH; | |
2210 | int old_mach = old_flags & EF_MIPS_MACH; | |
2211 | int new_isa = elf_mips_isa (new_flags); | |
2212 | int old_isa = elf_mips_isa (old_flags); | |
2213 | ||
2214 | /* If either has no machine specified, just compare the general isa's. | |
2215 | Some combinations of machines are ok, if the isa's match. */ | |
2216 | if (! new_mach | |
2217 | || ! old_mach | |
2218 | || new_mach == old_mach | |
2219 | ) | |
2220 | { | |
2221 | /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3 | |
2222 | and -mips4 code. They will normally use the same data sizes and | |
2223 | calling conventions. */ | |
2224 | ||
2225 | if ((new_isa == 1 || new_isa == 2) | |
2226 | ? (old_isa != 1 && old_isa != 2) | |
2227 | : (old_isa == 1 || old_isa == 2)) | |
2228 | { | |
2229 | (*_bfd_error_handler) | |
2230 | (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"), | |
2231 | bfd_get_filename (ibfd), new_isa, old_isa); | |
2232 | ok = false; | |
2233 | } | |
2234 | } | |
2235 | ||
2236 | else | |
2237 | { | |
2238 | (*_bfd_error_handler) | |
2239 | (_("%s: ISA mismatch (%d) with previous modules (%d)"), | |
2240 | bfd_get_filename (ibfd), | |
2241 | elf_mips_mach (new_flags), | |
2242 | elf_mips_mach (old_flags)); | |
2243 | ok = false; | |
2244 | } | |
2245 | ||
2246 | new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); | |
2247 | old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); | |
2248 | } | |
2249 | ||
2250 | /* Compare ABI's */ | |
2251 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)) | |
2252 | { | |
2253 | /* Only error if both are set (to different values). */ | |
2254 | if ((new_flags & EF_MIPS_ABI) | |
2255 | && (old_flags & EF_MIPS_ABI)) | |
2256 | { | |
2257 | (*_bfd_error_handler) | |
2258 | (_("%s: ABI mismatch: linking %s module with previous %s modules"), | |
2259 | bfd_get_filename (ibfd), | |
2260 | elf_mips_abi_name (new_flags), | |
2261 | elf_mips_abi_name (old_flags)); | |
2262 | ok = false; | |
2263 | } | |
2264 | new_flags &= ~EF_MIPS_ABI; | |
2265 | old_flags &= ~EF_MIPS_ABI; | |
2266 | } | |
2267 | ||
2268 | /* Warn about any other mismatches */ | |
2269 | if (new_flags != old_flags) | |
2270 | { | |
2271 | (*_bfd_error_handler) | |
2272 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
2273 | bfd_get_filename (ibfd), (unsigned long) new_flags, | |
2274 | (unsigned long) old_flags); | |
2275 | ok = false; | |
2276 | } | |
2277 | ||
2278 | if (! ok) | |
2279 | { | |
2280 | bfd_set_error (bfd_error_bad_value); | |
2281 | return false; | |
2282 | } | |
2283 | ||
2284 | return true; | |
2285 | } | |
2286 | \f | |
2287 | static boolean | |
2288 | _bfd_mips_elf_print_private_bfd_data (abfd, ptr) | |
2289 | bfd *abfd; | |
2290 | PTR ptr; | |
2291 | { | |
2292 | FILE *file = (FILE *) ptr; | |
2293 | ||
2294 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
2295 | ||
2296 | /* Print normal ELF private data. */ | |
2297 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
2298 | ||
2299 | /* xgettext:c-format */ | |
2300 | fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
2301 | ||
2302 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
2303 | fprintf (file, _ (" [abi=O32]")); | |
2304 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
2305 | fprintf (file, _ (" [abi=O64]")); | |
2306 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
2307 | fprintf (file, _ (" [abi=EABI32]")); | |
2308 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
2309 | fprintf (file, _ (" [abi=EABI64]")); | |
2310 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
2311 | fprintf (file, _ (" [abi unknown]")); | |
2312 | else | |
2313 | fprintf (file, _ (" [no abi set]")); | |
2314 | ||
2315 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
2316 | fprintf (file, _ (" [mips1]")); | |
2317 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) | |
2318 | fprintf (file, _ (" [mips2]")); | |
2319 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) | |
2320 | fprintf (file, _ (" [mips3]")); | |
2321 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) | |
2322 | fprintf (file, _ (" [mips4]")); | |
2323 | else | |
2324 | fprintf (file, _ (" [unknown ISA]")); | |
2325 | ||
2326 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) | |
2327 | fprintf (file, _ (" [32bitmode]")); | |
2328 | else | |
2329 | fprintf (file, _ (" [not 32bitmode]")); | |
2330 | ||
2331 | fputc ('\n', file); | |
2332 | ||
2333 | return true; | |
2334 | } | |
2335 | \f | |
2336 | /* Handle a MIPS specific section when reading an object file. This | |
2337 | is called when elfcode.h finds a section with an unknown type. | |
2338 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
2339 | ||
2340 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
2341 | how to. */ | |
2342 | ||
2343 | boolean | |
2344 | _bfd_mips_elf_section_from_shdr (abfd, hdr, name) | |
2345 | bfd *abfd; | |
2346 | Elf_Internal_Shdr *hdr; | |
2347 | const char *name; | |
2348 | { | |
2349 | flagword flags = 0; | |
2350 | ||
2351 | /* There ought to be a place to keep ELF backend specific flags, but | |
2352 | at the moment there isn't one. We just keep track of the | |
2353 | sections by their name, instead. Fortunately, the ABI gives | |
2354 | suggested names for all the MIPS specific sections, so we will | |
2355 | probably get away with this. */ | |
2356 | switch (hdr->sh_type) | |
2357 | { | |
2358 | case SHT_MIPS_LIBLIST: | |
2359 | if (strcmp (name, ".liblist") != 0) | |
2360 | return false; | |
2361 | break; | |
2362 | case SHT_MIPS_MSYM: | |
2363 | if (strcmp (name, ".msym") != 0) | |
2364 | return false; | |
2365 | break; | |
2366 | case SHT_MIPS_CONFLICT: | |
2367 | if (strcmp (name, ".conflict") != 0) | |
2368 | return false; | |
2369 | break; | |
2370 | case SHT_MIPS_GPTAB: | |
2371 | if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0) | |
2372 | return false; | |
2373 | break; | |
2374 | case SHT_MIPS_UCODE: | |
2375 | if (strcmp (name, ".ucode") != 0) | |
2376 | return false; | |
2377 | break; | |
2378 | case SHT_MIPS_DEBUG: | |
2379 | if (strcmp (name, ".mdebug") != 0) | |
2380 | return false; | |
2381 | flags = SEC_DEBUGGING; | |
2382 | break; | |
2383 | case SHT_MIPS_REGINFO: | |
2384 | if (strcmp (name, ".reginfo") != 0 | |
2385 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
2386 | return false; | |
2387 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); | |
2388 | break; | |
2389 | case SHT_MIPS_IFACE: | |
2390 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
2391 | return false; | |
2392 | break; | |
2393 | case SHT_MIPS_CONTENT: | |
2394 | if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0) | |
2395 | return false; | |
2396 | break; | |
2397 | case SHT_MIPS_OPTIONS: | |
2398 | if (strcmp (name, ".options") != 0 | |
2399 | && strcmp (name, ".MIPS.options") != 0) | |
2400 | return false; | |
2401 | break; | |
2402 | case SHT_MIPS_DWARF: | |
2403 | if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0) | |
2404 | return false; | |
2405 | break; | |
2406 | case SHT_MIPS_SYMBOL_LIB: | |
2407 | if (strcmp (name, ".MIPS.symlib") != 0) | |
2408 | return false; | |
2409 | break; | |
2410 | case SHT_MIPS_EVENTS: | |
2411 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0 | |
2412 | && strncmp (name, ".MIPS.post_rel", | |
2413 | sizeof ".MIPS.post_rel" - 1) != 0) | |
2414 | return false; | |
2415 | break; | |
2416 | default: | |
2417 | return false; | |
2418 | } | |
2419 | ||
2420 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
2421 | return false; | |
2422 | ||
2423 | if (flags) | |
2424 | { | |
2425 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
2426 | (bfd_get_section_flags (abfd, | |
2427 | hdr->bfd_section) | |
2428 | | flags))) | |
2429 | return false; | |
2430 | } | |
2431 | ||
2432 | return true; | |
2433 | } | |
2434 | ||
2435 | /* Handle a 32-bit MIPS ELF specific section. */ | |
2436 | ||
2437 | static boolean | |
2438 | mips_elf32_section_from_shdr (abfd, hdr, name) | |
2439 | bfd *abfd; | |
2440 | Elf_Internal_Shdr *hdr; | |
2441 | char *name; | |
2442 | { | |
2443 | if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name)) | |
2444 | return false; | |
2445 | ||
2446 | /* FIXME: We should record sh_info for a .gptab section. */ | |
2447 | ||
2448 | /* For a .reginfo section, set the gp value in the tdata information | |
2449 | from the contents of this section. We need the gp value while | |
2450 | processing relocs, so we just get it now. The .reginfo section | |
2451 | is not used in the 64-bit MIPS ELF ABI. */ | |
2452 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
2453 | { | |
2454 | Elf32_External_RegInfo ext; | |
2455 | Elf32_RegInfo s; | |
2456 | ||
2457 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext, | |
2458 | (file_ptr) 0, sizeof ext)) | |
2459 | return false; | |
2460 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); | |
2461 | elf_gp (abfd) = s.ri_gp_value; | |
2462 | } | |
2463 | ||
2464 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
2465 | set the gp value based on what we find. We may see both | |
2466 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
2467 | they should agree. */ | |
2468 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
2469 | { | |
2470 | bfd_byte *contents, *l, *lend; | |
2471 | ||
2472 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); | |
2473 | if (contents == NULL) | |
2474 | return false; | |
2475 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, | |
2476 | (file_ptr) 0, hdr->sh_size)) | |
2477 | { | |
2478 | free (contents); | |
2479 | return false; | |
2480 | } | |
2481 | l = contents; | |
2482 | lend = contents + hdr->sh_size; | |
2483 | while (l + sizeof (Elf_External_Options) <= lend) | |
2484 | { | |
2485 | Elf_Internal_Options intopt; | |
2486 | ||
2487 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
2488 | &intopt); | |
2489 | if (intopt.kind == ODK_REGINFO) | |
2490 | { | |
2491 | Elf32_RegInfo intreg; | |
2492 | ||
2493 | bfd_mips_elf32_swap_reginfo_in | |
2494 | (abfd, | |
2495 | ((Elf32_External_RegInfo *) | |
2496 | (l + sizeof (Elf_External_Options))), | |
2497 | &intreg); | |
2498 | elf_gp (abfd) = intreg.ri_gp_value; | |
2499 | } | |
2500 | l += intopt.size; | |
2501 | } | |
2502 | free (contents); | |
2503 | } | |
2504 | ||
2505 | return true; | |
2506 | } | |
2507 | ||
2508 | /* Set the correct type for a MIPS ELF section. We do this by the | |
2509 | section name, which is a hack, but ought to work. This routine is | |
2510 | used by both the 32-bit and the 64-bit ABI. */ | |
2511 | ||
2512 | boolean | |
2513 | _bfd_mips_elf_fake_sections (abfd, hdr, sec) | |
2514 | bfd *abfd; | |
2515 | Elf32_Internal_Shdr *hdr; | |
2516 | asection *sec; | |
2517 | { | |
2518 | register const char *name; | |
2519 | ||
2520 | name = bfd_get_section_name (abfd, sec); | |
2521 | ||
2522 | if (strcmp (name, ".liblist") == 0) | |
2523 | { | |
2524 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
2525 | hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib); | |
2526 | /* The sh_link field is set in final_write_processing. */ | |
2527 | } | |
2528 | else if (strcmp (name, ".msym") == 0) | |
2529 | { | |
2530 | hdr->sh_type = SHT_MIPS_MSYM; | |
2531 | hdr->sh_entsize = 8; | |
2532 | /* FIXME: Set the sh_info field. */ | |
2533 | } | |
2534 | else if (strcmp (name, ".conflict") == 0) | |
2535 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
2536 | else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
2537 | { | |
2538 | hdr->sh_type = SHT_MIPS_GPTAB; | |
2539 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
2540 | /* The sh_info field is set in final_write_processing. */ | |
2541 | } | |
2542 | else if (strcmp (name, ".ucode") == 0) | |
2543 | hdr->sh_type = SHT_MIPS_UCODE; | |
2544 | else if (strcmp (name, ".mdebug") == 0) | |
2545 | { | |
2546 | hdr->sh_type = SHT_MIPS_DEBUG; | |
2547 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
2548 | entsize of 0. FIXME: Does this matter? */ | |
2549 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
2550 | hdr->sh_entsize = 0; | |
2551 | else | |
2552 | hdr->sh_entsize = 1; | |
2553 | } | |
2554 | else if (strcmp (name, ".reginfo") == 0) | |
2555 | { | |
2556 | hdr->sh_type = SHT_MIPS_REGINFO; | |
2557 | /* In a shared object on Irix 5.3, the .reginfo section has an | |
2558 | entsize of 0x18. FIXME: Does this matter? */ | |
2559 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
2560 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
2561 | else | |
2562 | hdr->sh_entsize = 1; | |
2563 | } | |
2564 | else if (SGI_COMPAT (abfd) | |
2565 | && (strcmp (name, ".hash") == 0 | |
2566 | || strcmp (name, ".dynamic") == 0 | |
2567 | || strcmp (name, ".dynstr") == 0)) | |
2568 | { | |
2569 | hdr->sh_entsize = 0; | |
2570 | #if 0 | |
2571 | /* This isn't how the Irix 6 linker behaves. */ | |
2572 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; | |
2573 | #endif | |
2574 | } | |
2575 | else if (strcmp (name, ".got") == 0 | |
2576 | || strcmp (name, ".sdata") == 0 | |
2577 | || strcmp (name, ".sbss") == 0 | |
2578 | || strcmp (name, ".lit4") == 0 | |
2579 | || strcmp (name, ".lit8") == 0) | |
2580 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
2581 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
2582 | { | |
2583 | hdr->sh_type = SHT_MIPS_IFACE; | |
2584 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2585 | } | |
3f830999 | 2586 | else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0) |
252b5132 RH |
2587 | { |
2588 | hdr->sh_type = SHT_MIPS_CONTENT; | |
3f830999 | 2589 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
252b5132 RH |
2590 | /* The sh_info field is set in final_write_processing. */ |
2591 | } | |
2592 | else if (strcmp (name, ".options") == 0 | |
2593 | || strcmp (name, ".MIPS.options") == 0) | |
2594 | { | |
2595 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
2596 | hdr->sh_entsize = 1; | |
2597 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2598 | } | |
2599 | else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0) | |
2600 | hdr->sh_type = SHT_MIPS_DWARF; | |
2601 | else if (strcmp (name, ".MIPS.symlib") == 0) | |
2602 | { | |
2603 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
2604 | /* The sh_link and sh_info fields are set in | |
2605 | final_write_processing. */ | |
2606 | } | |
2607 | else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0 | |
2608 | || strncmp (name, ".MIPS.post_rel", | |
2609 | sizeof ".MIPS.post_rel" - 1) == 0) | |
2610 | { | |
2611 | hdr->sh_type = SHT_MIPS_EVENTS; | |
2612 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2613 | /* The sh_link field is set in final_write_processing. */ | |
2614 | } | |
2615 | ||
2616 | return true; | |
2617 | } | |
2618 | ||
2619 | /* Given a BFD section, try to locate the corresponding ELF section | |
2620 | index. This is used by both the 32-bit and the 64-bit ABI. | |
2621 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
2622 | but for non-PIC objects we will certainly want support for at least | |
2623 | the .scommon section. */ | |
2624 | ||
2625 | boolean | |
2626 | _bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
2627 | bfd *abfd; | |
2628 | Elf32_Internal_Shdr *hdr; | |
2629 | asection *sec; | |
2630 | int *retval; | |
2631 | { | |
2632 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
2633 | { | |
2634 | *retval = SHN_MIPS_SCOMMON; | |
2635 | return true; | |
2636 | } | |
2637 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
2638 | { | |
2639 | *retval = SHN_MIPS_ACOMMON; | |
2640 | return true; | |
2641 | } | |
2642 | return false; | |
2643 | } | |
2644 | ||
2645 | /* When are writing out the .options or .MIPS.options section, | |
2646 | remember the bytes we are writing out, so that we can install the | |
2647 | GP value in the section_processing routine. */ | |
2648 | ||
2649 | boolean | |
2650 | _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count) | |
2651 | bfd *abfd; | |
2652 | sec_ptr section; | |
2653 | PTR location; | |
2654 | file_ptr offset; | |
2655 | bfd_size_type count; | |
2656 | { | |
2657 | if (strcmp (section->name, ".options") == 0 | |
2658 | || strcmp (section->name, ".MIPS.options") == 0) | |
2659 | { | |
2660 | bfd_byte *c; | |
2661 | ||
2662 | if (elf_section_data (section) == NULL) | |
2663 | { | |
2664 | section->used_by_bfd = | |
2665 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
2666 | if (elf_section_data (section) == NULL) | |
2667 | return false; | |
2668 | } | |
2669 | c = (bfd_byte *) elf_section_data (section)->tdata; | |
2670 | if (c == NULL) | |
2671 | { | |
2672 | bfd_size_type size; | |
2673 | ||
2674 | if (section->_cooked_size != 0) | |
2675 | size = section->_cooked_size; | |
2676 | else | |
2677 | size = section->_raw_size; | |
2678 | c = (bfd_byte *) bfd_zalloc (abfd, size); | |
2679 | if (c == NULL) | |
2680 | return false; | |
2681 | elf_section_data (section)->tdata = (PTR) c; | |
2682 | } | |
2683 | ||
2684 | memcpy (c + offset, location, count); | |
2685 | } | |
2686 | ||
2687 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
2688 | count); | |
2689 | } | |
2690 | ||
2691 | /* Work over a section just before writing it out. This routine is | |
2692 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
2693 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
2694 | a better way. */ | |
2695 | ||
2696 | boolean | |
2697 | _bfd_mips_elf_section_processing (abfd, hdr) | |
2698 | bfd *abfd; | |
2699 | Elf_Internal_Shdr *hdr; | |
2700 | { | |
2701 | if (hdr->bfd_section != NULL) | |
2702 | { | |
2703 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
2704 | ||
2705 | if (strcmp (name, ".sdata") == 0) | |
2706 | { | |
2707 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
2708 | hdr->sh_type = SHT_PROGBITS; | |
2709 | } | |
2710 | else if (strcmp (name, ".sbss") == 0) | |
2711 | { | |
2712 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
2713 | hdr->sh_type = SHT_NOBITS; | |
2714 | } | |
2715 | else if (strcmp (name, ".lit8") == 0 | |
2716 | || strcmp (name, ".lit4") == 0) | |
2717 | { | |
2718 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
2719 | hdr->sh_type = SHT_PROGBITS; | |
2720 | } | |
2721 | else if (strcmp (name, ".compact_rel") == 0) | |
2722 | { | |
2723 | hdr->sh_flags = 0; | |
2724 | hdr->sh_type = SHT_PROGBITS; | |
2725 | } | |
2726 | else if (strcmp (name, ".rtproc") == 0) | |
2727 | { | |
2728 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
2729 | { | |
2730 | unsigned int adjust; | |
2731 | ||
2732 | adjust = hdr->sh_size % hdr->sh_addralign; | |
2733 | if (adjust != 0) | |
2734 | hdr->sh_size += hdr->sh_addralign - adjust; | |
2735 | } | |
2736 | } | |
2737 | } | |
2738 | ||
2739 | return true; | |
2740 | } | |
2741 | ||
2742 | /* Work over a section just before writing it out. We update the GP | |
2743 | value in the SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS sections based | |
2744 | on the value we are using. */ | |
2745 | ||
2746 | static boolean | |
2747 | mips_elf32_section_processing (abfd, hdr) | |
2748 | bfd *abfd; | |
2749 | Elf32_Internal_Shdr *hdr; | |
2750 | { | |
2751 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
2752 | { | |
2753 | bfd_byte buf[4]; | |
2754 | ||
2755 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
2756 | BFD_ASSERT (hdr->contents == NULL); | |
2757 | ||
2758 | if (bfd_seek (abfd, | |
2759 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
2760 | SEEK_SET) == -1) | |
2761 | return false; | |
2762 | bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf); | |
2763 | if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4) | |
2764 | return false; | |
2765 | } | |
2766 | ||
2767 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
2768 | && hdr->bfd_section != NULL | |
2769 | && elf_section_data (hdr->bfd_section) != NULL | |
2770 | && elf_section_data (hdr->bfd_section)->tdata != NULL) | |
2771 | { | |
2772 | bfd_byte *contents, *l, *lend; | |
2773 | ||
2774 | /* We stored the section contents in the elf_section_data tdata | |
2775 | field in the set_section_contents routine. We save the | |
2776 | section contents so that we don't have to read them again. | |
2777 | At this point we know that elf_gp is set, so we can look | |
2778 | through the section contents to see if there is an | |
2779 | ODK_REGINFO structure. */ | |
2780 | ||
2781 | contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata; | |
2782 | l = contents; | |
2783 | lend = contents + hdr->sh_size; | |
2784 | while (l + sizeof (Elf_External_Options) <= lend) | |
2785 | { | |
2786 | Elf_Internal_Options intopt; | |
2787 | ||
2788 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
2789 | &intopt); | |
2790 | if (intopt.kind == ODK_REGINFO) | |
2791 | { | |
2792 | bfd_byte buf[4]; | |
2793 | ||
2794 | if (bfd_seek (abfd, | |
2795 | (hdr->sh_offset | |
2796 | + (l - contents) | |
2797 | + sizeof (Elf_External_Options) | |
2798 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
2799 | SEEK_SET) == -1) | |
2800 | return false; | |
2801 | bfd_h_put_32 (abfd, elf_gp (abfd), buf); | |
2802 | if (bfd_write (buf, 1, 4, abfd) != 4) | |
2803 | return false; | |
2804 | } | |
2805 | l += intopt.size; | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | return _bfd_mips_elf_section_processing (abfd, hdr); | |
2810 | } | |
2811 | \f | |
2812 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
2813 | other is for small objects. All the small objects are kept | |
2814 | together, and then referenced via the gp pointer, which yields | |
2815 | faster assembler code. This is what we use for the small common | |
2816 | section. This approach is copied from ecoff.c. */ | |
2817 | static asection mips_elf_scom_section; | |
2818 | static asymbol mips_elf_scom_symbol; | |
2819 | static asymbol *mips_elf_scom_symbol_ptr; | |
2820 | ||
2821 | /* MIPS ELF also uses an acommon section, which represents an | |
2822 | allocated common symbol which may be overridden by a | |
2823 | definition in a shared library. */ | |
2824 | static asection mips_elf_acom_section; | |
2825 | static asymbol mips_elf_acom_symbol; | |
2826 | static asymbol *mips_elf_acom_symbol_ptr; | |
2827 | ||
2828 | /* The Irix 5 support uses two virtual sections, which represent | |
2829 | text/data symbols defined in dynamic objects. */ | |
2830 | static asection mips_elf_text_section; | |
2831 | static asection *mips_elf_text_section_ptr; | |
2832 | static asymbol mips_elf_text_symbol; | |
2833 | static asymbol *mips_elf_text_symbol_ptr; | |
2834 | ||
2835 | static asection mips_elf_data_section; | |
2836 | static asection *mips_elf_data_section_ptr; | |
2837 | static asymbol mips_elf_data_symbol; | |
2838 | static asymbol *mips_elf_data_symbol_ptr; | |
2839 | ||
2840 | /* Handle the special MIPS section numbers that a symbol may use. | |
2841 | This is used for both the 32-bit and the 64-bit ABI. */ | |
2842 | ||
2843 | void | |
2844 | _bfd_mips_elf_symbol_processing (abfd, asym) | |
2845 | bfd *abfd; | |
2846 | asymbol *asym; | |
2847 | { | |
2848 | elf_symbol_type *elfsym; | |
2849 | ||
2850 | elfsym = (elf_symbol_type *) asym; | |
2851 | switch (elfsym->internal_elf_sym.st_shndx) | |
2852 | { | |
2853 | case SHN_MIPS_ACOMMON: | |
2854 | /* This section is used in a dynamically linked executable file. | |
2855 | It is an allocated common section. The dynamic linker can | |
2856 | either resolve these symbols to something in a shared | |
2857 | library, or it can just leave them here. For our purposes, | |
2858 | we can consider these symbols to be in a new section. */ | |
2859 | if (mips_elf_acom_section.name == NULL) | |
2860 | { | |
2861 | /* Initialize the acommon section. */ | |
2862 | mips_elf_acom_section.name = ".acommon"; | |
2863 | mips_elf_acom_section.flags = SEC_ALLOC; | |
2864 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
2865 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
2866 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
2867 | mips_elf_acom_symbol.name = ".acommon"; | |
2868 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
2869 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
2870 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
2871 | } | |
2872 | asym->section = &mips_elf_acom_section; | |
2873 | break; | |
2874 | ||
2875 | case SHN_COMMON: | |
2876 | /* Common symbols less than the GP size are automatically | |
2877 | treated as SHN_MIPS_SCOMMON symbols. */ | |
2878 | if (asym->value > elf_gp_size (abfd)) | |
2879 | break; | |
2880 | /* Fall through. */ | |
2881 | case SHN_MIPS_SCOMMON: | |
2882 | if (mips_elf_scom_section.name == NULL) | |
2883 | { | |
2884 | /* Initialize the small common section. */ | |
2885 | mips_elf_scom_section.name = ".scommon"; | |
2886 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
2887 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
2888 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
2889 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
2890 | mips_elf_scom_symbol.name = ".scommon"; | |
2891 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
2892 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
2893 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
2894 | } | |
2895 | asym->section = &mips_elf_scom_section; | |
2896 | asym->value = elfsym->internal_elf_sym.st_size; | |
2897 | break; | |
2898 | ||
2899 | case SHN_MIPS_SUNDEFINED: | |
2900 | asym->section = bfd_und_section_ptr; | |
2901 | break; | |
2902 | ||
2903 | #if 0 /* for SGI_COMPAT */ | |
2904 | case SHN_MIPS_TEXT: | |
2905 | asym->section = mips_elf_text_section_ptr; | |
2906 | break; | |
2907 | ||
2908 | case SHN_MIPS_DATA: | |
2909 | asym->section = mips_elf_data_section_ptr; | |
2910 | break; | |
2911 | #endif | |
2912 | } | |
2913 | } | |
2914 | \f | |
2915 | /* When creating an Irix 5 executable, we need REGINFO and RTPROC | |
2916 | segments. */ | |
2917 | ||
2918 | static int | |
2919 | mips_elf_additional_program_headers (abfd) | |
2920 | bfd *abfd; | |
2921 | { | |
2922 | asection *s; | |
2923 | int ret; | |
2924 | ||
2925 | ret = 0; | |
2926 | ||
2927 | if (! SGI_COMPAT (abfd)) | |
2928 | return ret; | |
2929 | ||
2930 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
2931 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
2932 | { | |
2933 | /* We need a PT_MIPS_REGINFO segment. */ | |
2934 | ++ret; | |
2935 | } | |
2936 | ||
2937 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
2938 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
2939 | { | |
2940 | /* We need a PT_MIPS_RTPROC segment. */ | |
2941 | ++ret; | |
2942 | } | |
2943 | ||
2944 | return ret; | |
2945 | } | |
2946 | ||
2947 | /* Modify the segment map for an Irix 5 executable. */ | |
2948 | ||
2949 | static boolean | |
2950 | mips_elf_modify_segment_map (abfd) | |
2951 | bfd *abfd; | |
2952 | { | |
2953 | asection *s; | |
2954 | struct elf_segment_map *m, **pm; | |
2955 | ||
2956 | if (! SGI_COMPAT (abfd)) | |
2957 | return true; | |
2958 | ||
2959 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
2960 | segment. */ | |
2961 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
2962 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
2963 | { | |
2964 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2965 | if (m->p_type == PT_MIPS_REGINFO) | |
2966 | break; | |
2967 | if (m == NULL) | |
2968 | { | |
2969 | m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); | |
2970 | if (m == NULL) | |
2971 | return false; | |
2972 | ||
2973 | m->p_type = PT_MIPS_REGINFO; | |
2974 | m->count = 1; | |
2975 | m->sections[0] = s; | |
2976 | ||
2977 | /* We want to put it after the PHDR and INTERP segments. */ | |
2978 | pm = &elf_tdata (abfd)->segment_map; | |
2979 | while (*pm != NULL | |
2980 | && ((*pm)->p_type == PT_PHDR | |
2981 | || (*pm)->p_type == PT_INTERP)) | |
2982 | pm = &(*pm)->next; | |
2983 | ||
2984 | m->next = *pm; | |
2985 | *pm = m; | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | /* If there are .dynamic and .mdebug sections, we make a room for | |
2990 | the RTPROC header. FIXME: Rewrite without section names. */ | |
2991 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
2992 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
2993 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
2994 | { | |
2995 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2996 | if (m->p_type == PT_MIPS_RTPROC) | |
2997 | break; | |
2998 | if (m == NULL) | |
2999 | { | |
3000 | m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); | |
3001 | if (m == NULL) | |
3002 | return false; | |
3003 | ||
3004 | m->p_type = PT_MIPS_RTPROC; | |
3005 | ||
3006 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
3007 | if (s == NULL) | |
3008 | { | |
3009 | m->count = 0; | |
3010 | m->p_flags = 0; | |
3011 | m->p_flags_valid = 1; | |
3012 | } | |
3013 | else | |
3014 | { | |
3015 | m->count = 1; | |
3016 | m->sections[0] = s; | |
3017 | } | |
3018 | ||
3019 | /* We want to put it after the DYNAMIC segment. */ | |
3020 | pm = &elf_tdata (abfd)->segment_map; | |
3021 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
3022 | pm = &(*pm)->next; | |
3023 | if (*pm != NULL) | |
3024 | pm = &(*pm)->next; | |
3025 | ||
3026 | m->next = *pm; | |
3027 | *pm = m; | |
3028 | } | |
3029 | } | |
3030 | ||
3031 | /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, .dynstr, | |
3032 | .dynsym, and .hash sections, and everything in between. */ | |
3033 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
3034 | if ((*pm)->p_type == PT_DYNAMIC) | |
3035 | break; | |
3036 | m = *pm; | |
3037 | if (m != NULL | |
3038 | && m->count == 1 | |
3039 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
3040 | { | |
3041 | static const char *sec_names[] = | |
3042 | { ".dynamic", ".dynstr", ".dynsym", ".hash" }; | |
3043 | bfd_vma low, high; | |
3044 | unsigned int i, c; | |
3045 | struct elf_segment_map *n; | |
3046 | ||
3047 | low = 0xffffffff; | |
3048 | high = 0; | |
3049 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
3050 | { | |
3051 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
3052 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3053 | { | |
3054 | bfd_size_type sz; | |
3055 | ||
3056 | if (low > s->vma) | |
3057 | low = s->vma; | |
3058 | sz = s->_cooked_size; | |
3059 | if (sz == 0) | |
3060 | sz = s->_raw_size; | |
3061 | if (high < s->vma + sz) | |
3062 | high = s->vma + sz; | |
3063 | } | |
3064 | } | |
3065 | ||
3066 | c = 0; | |
3067 | for (s = abfd->sections; s != NULL; s = s->next) | |
3068 | if ((s->flags & SEC_LOAD) != 0 | |
3069 | && s->vma >= low | |
3070 | && ((s->vma | |
3071 | + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) | |
3072 | <= high)) | |
3073 | ++c; | |
3074 | ||
3075 | n = ((struct elf_segment_map *) | |
3076 | bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *))); | |
3077 | if (n == NULL) | |
3078 | return false; | |
3079 | *n = *m; | |
3080 | n->count = c; | |
3081 | ||
3082 | i = 0; | |
3083 | for (s = abfd->sections; s != NULL; s = s->next) | |
3084 | { | |
3085 | if ((s->flags & SEC_LOAD) != 0 | |
3086 | && s->vma >= low | |
3087 | && ((s->vma | |
3088 | + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) | |
3089 | <= high)) | |
3090 | { | |
3091 | n->sections[i] = s; | |
3092 | ++i; | |
3093 | } | |
3094 | } | |
3095 | ||
3096 | *pm = n; | |
3097 | } | |
3098 | ||
3099 | return true; | |
3100 | } | |
3101 | \f | |
3102 | /* The structure of the runtime procedure descriptor created by the | |
3103 | loader for use by the static exception system. */ | |
3104 | ||
3105 | typedef struct runtime_pdr { | |
3106 | bfd_vma adr; /* memory address of start of procedure */ | |
3107 | long regmask; /* save register mask */ | |
3108 | long regoffset; /* save register offset */ | |
3109 | long fregmask; /* save floating point register mask */ | |
3110 | long fregoffset; /* save floating point register offset */ | |
3111 | long frameoffset; /* frame size */ | |
3112 | short framereg; /* frame pointer register */ | |
3113 | short pcreg; /* offset or reg of return pc */ | |
3114 | long irpss; /* index into the runtime string table */ | |
3115 | long reserved; | |
3116 | struct exception_info *exception_info;/* pointer to exception array */ | |
3117 | } RPDR, *pRPDR; | |
3118 | #define cbRPDR sizeof(RPDR) | |
3119 | #define rpdNil ((pRPDR) 0) | |
3120 | ||
3121 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
3122 | ||
3123 | static void ecoff_swap_rpdr_out | |
3124 | PARAMS ((bfd *, const RPDR *, struct rpdr_ext *)); | |
3125 | ||
3126 | static void | |
3127 | ecoff_swap_rpdr_out (abfd, in, ex) | |
3128 | bfd *abfd; | |
3129 | const RPDR *in; | |
3130 | struct rpdr_ext *ex; | |
3131 | { | |
3132 | /* ecoff_put_off was defined in ecoffswap.h. */ | |
3133 | ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr); | |
3134 | bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask); | |
3135 | bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset); | |
3136 | bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask); | |
3137 | bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset); | |
3138 | bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset); | |
3139 | ||
3140 | bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg); | |
3141 | bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg); | |
3142 | ||
3143 | bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss); | |
3144 | #if 0 /* FIXME */ | |
3145 | ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info); | |
3146 | #endif | |
3147 | } | |
3148 | \f | |
3149 | /* Read ECOFF debugging information from a .mdebug section into a | |
3150 | ecoff_debug_info structure. */ | |
3151 | ||
3152 | boolean | |
3153 | _bfd_mips_elf_read_ecoff_info (abfd, section, debug) | |
3154 | bfd *abfd; | |
3155 | asection *section; | |
3156 | struct ecoff_debug_info *debug; | |
3157 | { | |
3158 | HDRR *symhdr; | |
3159 | const struct ecoff_debug_swap *swap; | |
3160 | char *ext_hdr = NULL; | |
3161 | ||
3162 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3163 | memset (debug, 0, sizeof(*debug)); | |
3164 | ||
3165 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); | |
3166 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
3167 | goto error_return; | |
3168 | ||
3169 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
3170 | swap->external_hdr_size) | |
3171 | == false) | |
3172 | goto error_return; | |
3173 | ||
3174 | symhdr = &debug->symbolic_header; | |
3175 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
3176 | ||
3177 | /* The symbolic header contains absolute file offsets and sizes to | |
3178 | read. */ | |
3179 | #define READ(ptr, offset, count, size, type) \ | |
3180 | if (symhdr->count == 0) \ | |
3181 | debug->ptr = NULL; \ | |
3182 | else \ | |
3183 | { \ | |
3184 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ | |
3185 | if (debug->ptr == NULL) \ | |
3186 | goto error_return; \ | |
3187 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
3188 | || (bfd_read (debug->ptr, size, symhdr->count, \ | |
3189 | abfd) != size * symhdr->count)) \ | |
3190 | goto error_return; \ | |
3191 | } | |
3192 | ||
3193 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
3194 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
3195 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
3196 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
3197 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
3198 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
3199 | union aux_ext *); | |
3200 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
3201 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
3202 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
3203 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
3204 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
3205 | #undef READ | |
3206 | ||
3207 | debug->fdr = NULL; | |
3208 | debug->adjust = NULL; | |
3209 | ||
3210 | return true; | |
3211 | ||
3212 | error_return: | |
3213 | if (ext_hdr != NULL) | |
3214 | free (ext_hdr); | |
3215 | if (debug->line != NULL) | |
3216 | free (debug->line); | |
3217 | if (debug->external_dnr != NULL) | |
3218 | free (debug->external_dnr); | |
3219 | if (debug->external_pdr != NULL) | |
3220 | free (debug->external_pdr); | |
3221 | if (debug->external_sym != NULL) | |
3222 | free (debug->external_sym); | |
3223 | if (debug->external_opt != NULL) | |
3224 | free (debug->external_opt); | |
3225 | if (debug->external_aux != NULL) | |
3226 | free (debug->external_aux); | |
3227 | if (debug->ss != NULL) | |
3228 | free (debug->ss); | |
3229 | if (debug->ssext != NULL) | |
3230 | free (debug->ssext); | |
3231 | if (debug->external_fdr != NULL) | |
3232 | free (debug->external_fdr); | |
3233 | if (debug->external_rfd != NULL) | |
3234 | free (debug->external_rfd); | |
3235 | if (debug->external_ext != NULL) | |
3236 | free (debug->external_ext); | |
3237 | return false; | |
3238 | } | |
3239 | \f | |
3240 | /* MIPS ELF local labels start with '$', not 'L'. */ | |
3241 | ||
3242 | /*ARGSUSED*/ | |
3243 | static boolean | |
3244 | mips_elf_is_local_label_name (abfd, name) | |
3245 | bfd *abfd; | |
3246 | const char *name; | |
3247 | { | |
3248 | if (name[0] == '$') | |
3249 | return true; | |
3250 | ||
3251 | /* On Irix 6, the labels go back to starting with '.', so we accept | |
3252 | the generic ELF local label syntax as well. */ | |
3253 | return _bfd_elf_is_local_label_name (abfd, name); | |
3254 | } | |
3255 | ||
3256 | /* MIPS ELF uses a special find_nearest_line routine in order the | |
3257 | handle the ECOFF debugging information. */ | |
3258 | ||
3259 | struct mips_elf_find_line | |
3260 | { | |
3261 | struct ecoff_debug_info d; | |
3262 | struct ecoff_find_line i; | |
3263 | }; | |
3264 | ||
3265 | boolean | |
3266 | _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
3267 | functionname_ptr, line_ptr) | |
3268 | bfd *abfd; | |
3269 | asection *section; | |
3270 | asymbol **symbols; | |
3271 | bfd_vma offset; | |
3272 | const char **filename_ptr; | |
3273 | const char **functionname_ptr; | |
3274 | unsigned int *line_ptr; | |
3275 | { | |
3276 | asection *msec; | |
3277 | ||
3278 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
3279 | filename_ptr, functionname_ptr, | |
3280 | line_ptr)) | |
3281 | return true; | |
3282 | ||
3283 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
3284 | filename_ptr, functionname_ptr, | |
3285 | line_ptr)) | |
3286 | return true; | |
3287 | ||
3288 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
3289 | if (msec != NULL) | |
3290 | { | |
3291 | flagword origflags; | |
3292 | struct mips_elf_find_line *fi; | |
3293 | const struct ecoff_debug_swap * const swap = | |
3294 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3295 | ||
3296 | /* If we are called during a link, mips_elf_final_link may have | |
3297 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
3298 | if appropriate (which it normally will be). */ | |
3299 | origflags = msec->flags; | |
3300 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
3301 | msec->flags |= SEC_HAS_CONTENTS; | |
3302 | ||
3303 | fi = elf_tdata (abfd)->find_line_info; | |
3304 | if (fi == NULL) | |
3305 | { | |
3306 | bfd_size_type external_fdr_size; | |
3307 | char *fraw_src; | |
3308 | char *fraw_end; | |
3309 | struct fdr *fdr_ptr; | |
3310 | ||
3311 | fi = ((struct mips_elf_find_line *) | |
3312 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); | |
3313 | if (fi == NULL) | |
3314 | { | |
3315 | msec->flags = origflags; | |
3316 | return false; | |
3317 | } | |
3318 | ||
3319 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
3320 | { | |
3321 | msec->flags = origflags; | |
3322 | return false; | |
3323 | } | |
3324 | ||
3325 | /* Swap in the FDR information. */ | |
3326 | fi->d.fdr = ((struct fdr *) | |
3327 | bfd_alloc (abfd, | |
3328 | (fi->d.symbolic_header.ifdMax * | |
3329 | sizeof (struct fdr)))); | |
3330 | if (fi->d.fdr == NULL) | |
3331 | { | |
3332 | msec->flags = origflags; | |
3333 | return false; | |
3334 | } | |
3335 | external_fdr_size = swap->external_fdr_size; | |
3336 | fdr_ptr = fi->d.fdr; | |
3337 | fraw_src = (char *) fi->d.external_fdr; | |
3338 | fraw_end = (fraw_src | |
3339 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
3340 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
3341 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
3342 | ||
3343 | elf_tdata (abfd)->find_line_info = fi; | |
3344 | ||
3345 | /* Note that we don't bother to ever free this information. | |
3346 | find_nearest_line is either called all the time, as in | |
3347 | objdump -l, so the information should be saved, or it is | |
3348 | rarely called, as in ld error messages, so the memory | |
3349 | wasted is unimportant. Still, it would probably be a | |
3350 | good idea for free_cached_info to throw it away. */ | |
3351 | } | |
3352 | ||
3353 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
3354 | &fi->i, filename_ptr, functionname_ptr, | |
3355 | line_ptr)) | |
3356 | { | |
3357 | msec->flags = origflags; | |
3358 | return true; | |
3359 | } | |
3360 | ||
3361 | msec->flags = origflags; | |
3362 | } | |
3363 | ||
3364 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
3365 | ||
3366 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
3367 | filename_ptr, functionname_ptr, | |
3368 | line_ptr); | |
3369 | } | |
3370 | \f | |
3371 | /* The mips16 compiler uses a couple of special sections to handle | |
3372 | floating point arguments. | |
3373 | ||
3374 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
3375 | copy floating point arguments from the fp regs to the gp regs and | |
3376 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
3377 | call should be redirected to the stub instead. If no 32 bit | |
3378 | function calls FNNAME, the stub should be discarded. We need to | |
3379 | consider any reference to the function, not just a call, because | |
3380 | if the address of the function is taken we will need the stub, | |
3381 | since the address might be passed to a 32 bit function. | |
3382 | ||
3383 | Section names that look like .mips16.call.FNNAME contain stubs | |
3384 | that copy floating point arguments from the gp regs to the fp | |
3385 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
3386 | then any 16 bit function that calls FNNAME should be redirected | |
3387 | to the stub instead. If FNNAME is not a 32 bit function, the | |
3388 | stub should be discarded. | |
3389 | ||
3390 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
3391 | which call FNNAME and then copy the return value from the fp regs | |
3392 | to the gp regs. These stubs store the return value in $18 while | |
3393 | calling FNNAME; any function which might call one of these stubs | |
3394 | must arrange to save $18 around the call. (This case is not | |
3395 | needed for 32 bit functions that call 16 bit functions, because | |
3396 | 16 bit functions always return floating point values in both | |
3397 | $f0/$f1 and $2/$3.) | |
3398 | ||
3399 | Note that in all cases FNNAME might be defined statically. | |
3400 | Therefore, FNNAME is not used literally. Instead, the relocation | |
3401 | information will indicate which symbol the section is for. | |
3402 | ||
3403 | We record any stubs that we find in the symbol table. */ | |
3404 | ||
3405 | #define FN_STUB ".mips16.fn." | |
3406 | #define CALL_STUB ".mips16.call." | |
3407 | #define CALL_FP_STUB ".mips16.call.fp." | |
3408 | ||
3409 | /* The MIPS ELF linker needs additional information for each symbol in | |
3410 | the global hash table. */ | |
3411 | ||
3412 | struct mips_elf_link_hash_entry | |
3413 | { | |
3414 | struct elf_link_hash_entry root; | |
3415 | ||
3416 | /* External symbol information. */ | |
3417 | EXTR esym; | |
3418 | ||
3419 | /* Number of MIPS_32 or MIPS_REL32 relocs against this symbol. */ | |
3420 | unsigned int mips_32_relocs; | |
3421 | ||
3422 | /* If there is a stub that 32 bit functions should use to call this | |
3423 | 16 bit function, this points to the section containing the stub. */ | |
3424 | asection *fn_stub; | |
3425 | ||
3426 | /* Whether we need the fn_stub; this is set if this symbol appears | |
3427 | in any relocs other than a 16 bit call. */ | |
3428 | boolean need_fn_stub; | |
3429 | ||
3430 | /* If there is a stub that 16 bit functions should use to call this | |
3431 | 32 bit function, this points to the section containing the stub. */ | |
3432 | asection *call_stub; | |
3433 | ||
3434 | /* This is like the call_stub field, but it is used if the function | |
3435 | being called returns a floating point value. */ | |
3436 | asection *call_fp_stub; | |
3437 | }; | |
3438 | ||
3439 | /* MIPS ELF linker hash table. */ | |
3440 | ||
3441 | struct mips_elf_link_hash_table | |
3442 | { | |
3443 | struct elf_link_hash_table root; | |
3444 | #if 0 | |
3445 | /* We no longer use this. */ | |
3446 | /* String section indices for the dynamic section symbols. */ | |
3447 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
3448 | #endif | |
3449 | /* The number of .rtproc entries. */ | |
3450 | bfd_size_type procedure_count; | |
3451 | /* The size of the .compact_rel section (if SGI_COMPAT). */ | |
3452 | bfd_size_type compact_rel_size; | |
3453 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic | |
3454 | entry is set to the address of __rld_obj_head as in Irix 5. */ | |
3455 | boolean use_rld_obj_head; | |
3456 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ | |
3457 | bfd_vma rld_value; | |
3458 | /* This is set if we see any mips16 stub sections. */ | |
3459 | boolean mips16_stubs_seen; | |
3460 | }; | |
3461 | ||
3462 | /* Look up an entry in a MIPS ELF linker hash table. */ | |
3463 | ||
3464 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
3465 | ((struct mips_elf_link_hash_entry *) \ | |
3466 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
3467 | (copy), (follow))) | |
3468 | ||
3469 | /* Traverse a MIPS ELF linker hash table. */ | |
3470 | ||
3471 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
3472 | (elf_link_hash_traverse \ | |
3473 | (&(table)->root, \ | |
3474 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
3475 | (info))) | |
3476 | ||
3477 | /* Get the MIPS ELF linker hash table from a link_info structure. */ | |
3478 | ||
3479 | #define mips_elf_hash_table(p) \ | |
3480 | ((struct mips_elf_link_hash_table *) ((p)->hash)) | |
3481 | ||
3482 | static boolean mips_elf_output_extsym | |
3483 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
3484 | ||
3485 | /* Create an entry in a MIPS ELF linker hash table. */ | |
3486 | ||
3487 | static struct bfd_hash_entry * | |
3488 | mips_elf_link_hash_newfunc (entry, table, string) | |
3489 | struct bfd_hash_entry *entry; | |
3490 | struct bfd_hash_table *table; | |
3491 | const char *string; | |
3492 | { | |
3493 | struct mips_elf_link_hash_entry *ret = | |
3494 | (struct mips_elf_link_hash_entry *) entry; | |
3495 | ||
3496 | /* Allocate the structure if it has not already been allocated by a | |
3497 | subclass. */ | |
3498 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
3499 | ret = ((struct mips_elf_link_hash_entry *) | |
3500 | bfd_hash_allocate (table, | |
3501 | sizeof (struct mips_elf_link_hash_entry))); | |
3502 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
3503 | return (struct bfd_hash_entry *) ret; | |
3504 | ||
3505 | /* Call the allocation method of the superclass. */ | |
3506 | ret = ((struct mips_elf_link_hash_entry *) | |
3507 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3508 | table, string)); | |
3509 | if (ret != (struct mips_elf_link_hash_entry *) NULL) | |
3510 | { | |
3511 | /* Set local fields. */ | |
3512 | memset (&ret->esym, 0, sizeof (EXTR)); | |
3513 | /* We use -2 as a marker to indicate that the information has | |
3514 | not been set. -1 means there is no associated ifd. */ | |
3515 | ret->esym.ifd = -2; | |
3516 | ret->mips_32_relocs = 0; | |
3517 | ret->fn_stub = NULL; | |
3518 | ret->need_fn_stub = false; | |
3519 | ret->call_stub = NULL; | |
3520 | ret->call_fp_stub = NULL; | |
3521 | } | |
3522 | ||
3523 | return (struct bfd_hash_entry *) ret; | |
3524 | } | |
3525 | ||
3526 | /* Create a MIPS ELF linker hash table. */ | |
3527 | ||
3528 | static struct bfd_link_hash_table * | |
3529 | mips_elf_link_hash_table_create (abfd) | |
3530 | bfd *abfd; | |
3531 | { | |
3532 | struct mips_elf_link_hash_table *ret; | |
3533 | ||
3534 | ret = ((struct mips_elf_link_hash_table *) | |
3535 | bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table))); | |
3536 | if (ret == (struct mips_elf_link_hash_table *) NULL) | |
3537 | return NULL; | |
3538 | ||
3539 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3540 | mips_elf_link_hash_newfunc)) | |
3541 | { | |
3542 | bfd_release (abfd, ret); | |
3543 | return NULL; | |
3544 | } | |
3545 | ||
3546 | #if 0 | |
3547 | /* We no longer use this. */ | |
3548 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
3549 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
3550 | #endif | |
3551 | ret->procedure_count = 0; | |
3552 | ret->compact_rel_size = 0; | |
3553 | ret->use_rld_obj_head = false; | |
3554 | ret->rld_value = 0; | |
3555 | ret->mips16_stubs_seen = false; | |
3556 | ||
3557 | return &ret->root.root; | |
3558 | } | |
3559 | ||
3560 | /* Hook called by the linker routine which adds symbols from an object | |
3561 | file. We must handle the special MIPS section numbers here. */ | |
3562 | ||
3563 | /*ARGSUSED*/ | |
3564 | static boolean | |
3565 | mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
3566 | bfd *abfd; | |
3567 | struct bfd_link_info *info; | |
3568 | const Elf_Internal_Sym *sym; | |
3569 | const char **namep; | |
3570 | flagword *flagsp; | |
3571 | asection **secp; | |
3572 | bfd_vma *valp; | |
3573 | { | |
3574 | if (SGI_COMPAT (abfd) | |
3575 | && (abfd->flags & DYNAMIC) != 0 | |
3576 | && strcmp (*namep, "_rld_new_interface") == 0) | |
3577 | { | |
3578 | /* Skip Irix 5 rld entry name. */ | |
3579 | *namep = NULL; | |
3580 | return true; | |
3581 | } | |
3582 | ||
3583 | switch (sym->st_shndx) | |
3584 | { | |
3585 | case SHN_COMMON: | |
3586 | /* Common symbols less than the GP size are automatically | |
3587 | treated as SHN_MIPS_SCOMMON symbols. */ | |
3588 | if (sym->st_size > elf_gp_size (abfd)) | |
3589 | break; | |
3590 | /* Fall through. */ | |
3591 | case SHN_MIPS_SCOMMON: | |
3592 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
3593 | (*secp)->flags |= SEC_IS_COMMON; | |
3594 | *valp = sym->st_size; | |
3595 | break; | |
3596 | ||
3597 | case SHN_MIPS_TEXT: | |
3598 | /* This section is used in a shared object. */ | |
3599 | if (mips_elf_text_section_ptr == NULL) | |
3600 | { | |
3601 | /* Initialize the section. */ | |
3602 | mips_elf_text_section.name = ".text"; | |
3603 | mips_elf_text_section.flags = SEC_NO_FLAGS; | |
3604 | mips_elf_text_section.output_section = NULL; | |
3605 | mips_elf_text_section.symbol = &mips_elf_text_symbol; | |
3606 | mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr; | |
3607 | mips_elf_text_symbol.name = ".text"; | |
3608 | mips_elf_text_symbol.flags = BSF_SECTION_SYM; | |
3609 | mips_elf_text_symbol.section = &mips_elf_text_section; | |
3610 | mips_elf_text_symbol_ptr = &mips_elf_text_symbol; | |
3611 | mips_elf_text_section_ptr = &mips_elf_text_section; | |
3612 | } | |
3613 | /* This code used to do *secp = bfd_und_section_ptr if | |
3614 | info->shared. I don't know why, and that doesn't make sense, | |
3615 | so I took it out. */ | |
3616 | *secp = mips_elf_text_section_ptr; | |
3617 | break; | |
3618 | ||
3619 | case SHN_MIPS_ACOMMON: | |
3620 | /* Fall through. XXX Can we treat this as allocated data? */ | |
3621 | case SHN_MIPS_DATA: | |
3622 | /* This section is used in a shared object. */ | |
3623 | if (mips_elf_data_section_ptr == NULL) | |
3624 | { | |
3625 | /* Initialize the section. */ | |
3626 | mips_elf_data_section.name = ".data"; | |
3627 | mips_elf_data_section.flags = SEC_NO_FLAGS; | |
3628 | mips_elf_data_section.output_section = NULL; | |
3629 | mips_elf_data_section.symbol = &mips_elf_data_symbol; | |
3630 | mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr; | |
3631 | mips_elf_data_symbol.name = ".data"; | |
3632 | mips_elf_data_symbol.flags = BSF_SECTION_SYM; | |
3633 | mips_elf_data_symbol.section = &mips_elf_data_section; | |
3634 | mips_elf_data_symbol_ptr = &mips_elf_data_symbol; | |
3635 | mips_elf_data_section_ptr = &mips_elf_data_section; | |
3636 | } | |
3637 | /* This code used to do *secp = bfd_und_section_ptr if | |
3638 | info->shared. I don't know why, and that doesn't make sense, | |
3639 | so I took it out. */ | |
3640 | *secp = mips_elf_data_section_ptr; | |
3641 | break; | |
3642 | ||
3643 | case SHN_MIPS_SUNDEFINED: | |
3644 | *secp = bfd_und_section_ptr; | |
3645 | break; | |
3646 | } | |
3647 | ||
3648 | if (SGI_COMPAT (abfd) | |
3649 | && ! info->shared | |
3650 | && info->hash->creator == abfd->xvec | |
3651 | && strcmp (*namep, "__rld_obj_head") == 0) | |
3652 | { | |
3653 | struct elf_link_hash_entry *h; | |
3654 | ||
3655 | /* Mark __rld_obj_head as dynamic. */ | |
3656 | h = NULL; | |
3657 | if (! (_bfd_generic_link_add_one_symbol | |
3658 | (info, abfd, *namep, BSF_GLOBAL, *secp, | |
3659 | (bfd_vma) *valp, (const char *) NULL, false, | |
3660 | get_elf_backend_data (abfd)->collect, | |
3661 | (struct bfd_link_hash_entry **) &h))) | |
3662 | return false; | |
3663 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
3664 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3665 | h->type = STT_OBJECT; | |
3666 | ||
3667 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
3668 | return false; | |
3669 | ||
3670 | mips_elf_hash_table (info)->use_rld_obj_head = true; | |
3671 | } | |
3672 | ||
3673 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
3674 | odd. This will cause something like .word SYM to come up with | |
3675 | the right value when it is loaded into the PC. */ | |
3676 | if (sym->st_other == STO_MIPS16) | |
3677 | ++*valp; | |
3678 | ||
3679 | return true; | |
3680 | } | |
3681 | ||
3682 | /* Structure used to pass information to mips_elf_output_extsym. */ | |
3683 | ||
3684 | struct extsym_info | |
3685 | { | |
3686 | bfd *abfd; | |
3687 | struct bfd_link_info *info; | |
3688 | struct ecoff_debug_info *debug; | |
3689 | const struct ecoff_debug_swap *swap; | |
3690 | boolean failed; | |
3691 | }; | |
3692 | ||
3693 | /* This routine is used to write out ECOFF debugging external symbol | |
3694 | information. It is called via mips_elf_link_hash_traverse. The | |
3695 | ECOFF external symbol information must match the ELF external | |
3696 | symbol information. Unfortunately, at this point we don't know | |
3697 | whether a symbol is required by reloc information, so the two | |
3698 | tables may wind up being different. We must sort out the external | |
3699 | symbol information before we can set the final size of the .mdebug | |
3700 | section, and we must set the size of the .mdebug section before we | |
3701 | can relocate any sections, and we can't know which symbols are | |
3702 | required by relocation until we relocate the sections. | |
3703 | Fortunately, it is relatively unlikely that any symbol will be | |
3704 | stripped but required by a reloc. In particular, it can not happen | |
3705 | when generating a final executable. */ | |
3706 | ||
3707 | static boolean | |
3708 | mips_elf_output_extsym (h, data) | |
3709 | struct mips_elf_link_hash_entry *h; | |
3710 | PTR data; | |
3711 | { | |
3712 | struct extsym_info *einfo = (struct extsym_info *) data; | |
3713 | boolean strip; | |
3714 | asection *sec, *output_section; | |
3715 | ||
3716 | if (h->root.indx == -2) | |
3717 | strip = false; | |
3718 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3719 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
3720 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3721 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
3722 | strip = true; | |
3723 | else if (einfo->info->strip == strip_all | |
3724 | || (einfo->info->strip == strip_some | |
3725 | && bfd_hash_lookup (einfo->info->keep_hash, | |
3726 | h->root.root.root.string, | |
3727 | false, false) == NULL)) | |
3728 | strip = true; | |
3729 | else | |
3730 | strip = false; | |
3731 | ||
3732 | if (strip) | |
3733 | return true; | |
3734 | ||
3735 | if (h->esym.ifd == -2) | |
3736 | { | |
3737 | h->esym.jmptbl = 0; | |
3738 | h->esym.cobol_main = 0; | |
3739 | h->esym.weakext = 0; | |
3740 | h->esym.reserved = 0; | |
3741 | h->esym.ifd = ifdNil; | |
3742 | h->esym.asym.value = 0; | |
3743 | h->esym.asym.st = stGlobal; | |
3744 | ||
3745 | if (SGI_COMPAT (einfo->abfd) | |
3746 | && (h->root.root.type == bfd_link_hash_undefined | |
3747 | || h->root.root.type == bfd_link_hash_undefweak)) | |
3748 | { | |
3749 | const char *name; | |
3750 | ||
3751 | /* Use undefined class. Also, set class and type for some | |
3752 | special symbols. */ | |
3753 | name = h->root.root.root.string; | |
3754 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
3755 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
3756 | { | |
3757 | h->esym.asym.sc = scData; | |
3758 | h->esym.asym.st = stLabel; | |
3759 | h->esym.asym.value = 0; | |
3760 | } | |
3761 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
3762 | { | |
3763 | h->esym.asym.sc = scAbs; | |
3764 | h->esym.asym.st = stLabel; | |
3765 | h->esym.asym.value = | |
3766 | mips_elf_hash_table (einfo->info)->procedure_count; | |
3767 | } | |
3768 | else if (strcmp (name, "_gp_disp") == 0) | |
3769 | { | |
3770 | h->esym.asym.sc = scAbs; | |
3771 | h->esym.asym.st = stLabel; | |
3772 | h->esym.asym.value = elf_gp (einfo->abfd); | |
3773 | } | |
3774 | else | |
3775 | h->esym.asym.sc = scUndefined; | |
3776 | } | |
3777 | else if (h->root.root.type != bfd_link_hash_defined | |
3778 | && h->root.root.type != bfd_link_hash_defweak) | |
3779 | h->esym.asym.sc = scAbs; | |
3780 | else | |
3781 | { | |
3782 | const char *name; | |
3783 | ||
3784 | sec = h->root.root.u.def.section; | |
3785 | output_section = sec->output_section; | |
3786 | ||
3787 | /* When making a shared library and symbol h is the one from | |
3788 | the another shared library, OUTPUT_SECTION may be null. */ | |
3789 | if (output_section == NULL) | |
3790 | h->esym.asym.sc = scUndefined; | |
3791 | else | |
3792 | { | |
3793 | name = bfd_section_name (output_section->owner, output_section); | |
3794 | ||
3795 | if (strcmp (name, ".text") == 0) | |
3796 | h->esym.asym.sc = scText; | |
3797 | else if (strcmp (name, ".data") == 0) | |
3798 | h->esym.asym.sc = scData; | |
3799 | else if (strcmp (name, ".sdata") == 0) | |
3800 | h->esym.asym.sc = scSData; | |
3801 | else if (strcmp (name, ".rodata") == 0 | |
3802 | || strcmp (name, ".rdata") == 0) | |
3803 | h->esym.asym.sc = scRData; | |
3804 | else if (strcmp (name, ".bss") == 0) | |
3805 | h->esym.asym.sc = scBss; | |
3806 | else if (strcmp (name, ".sbss") == 0) | |
3807 | h->esym.asym.sc = scSBss; | |
3808 | else if (strcmp (name, ".init") == 0) | |
3809 | h->esym.asym.sc = scInit; | |
3810 | else if (strcmp (name, ".fini") == 0) | |
3811 | h->esym.asym.sc = scFini; | |
3812 | else | |
3813 | h->esym.asym.sc = scAbs; | |
3814 | } | |
3815 | } | |
3816 | ||
3817 | h->esym.asym.reserved = 0; | |
3818 | h->esym.asym.index = indexNil; | |
3819 | } | |
3820 | ||
3821 | if (h->root.root.type == bfd_link_hash_common) | |
3822 | h->esym.asym.value = h->root.root.u.c.size; | |
3823 | else if (h->root.root.type == bfd_link_hash_defined | |
3824 | || h->root.root.type == bfd_link_hash_defweak) | |
3825 | { | |
3826 | if (h->esym.asym.sc == scCommon) | |
3827 | h->esym.asym.sc = scBss; | |
3828 | else if (h->esym.asym.sc == scSCommon) | |
3829 | h->esym.asym.sc = scSBss; | |
3830 | ||
3831 | sec = h->root.root.u.def.section; | |
3832 | output_section = sec->output_section; | |
3833 | if (output_section != NULL) | |
3834 | h->esym.asym.value = (h->root.root.u.def.value | |
3835 | + sec->output_offset | |
3836 | + output_section->vma); | |
3837 | else | |
3838 | h->esym.asym.value = 0; | |
3839 | } | |
3840 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
3841 | { | |
3842 | /* Set type and value for a symbol with a function stub. */ | |
3843 | h->esym.asym.st = stProc; | |
3844 | sec = h->root.root.u.def.section; | |
3845 | if (sec == NULL) | |
3846 | h->esym.asym.value = 0; | |
3847 | else | |
3848 | { | |
3849 | output_section = sec->output_section; | |
3850 | if (output_section != NULL) | |
3851 | h->esym.asym.value = (h->root.plt.offset | |
3852 | + sec->output_offset | |
3853 | + output_section->vma); | |
3854 | else | |
3855 | h->esym.asym.value = 0; | |
3856 | } | |
3857 | #if 0 /* FIXME? */ | |
3858 | h->esym.ifd = 0; | |
3859 | #endif | |
3860 | } | |
3861 | ||
3862 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
3863 | h->root.root.root.string, | |
3864 | &h->esym)) | |
3865 | { | |
3866 | einfo->failed = true; | |
3867 | return false; | |
3868 | } | |
3869 | ||
3870 | return true; | |
3871 | } | |
3872 | ||
3873 | /* Create a runtime procedure table from the .mdebug section. */ | |
3874 | ||
3875 | static boolean | |
3876 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
3877 | PTR handle; | |
3878 | bfd *abfd; | |
3879 | struct bfd_link_info *info; | |
3880 | asection *s; | |
3881 | struct ecoff_debug_info *debug; | |
3882 | { | |
3883 | const struct ecoff_debug_swap *swap; | |
3884 | HDRR *hdr = &debug->symbolic_header; | |
3885 | RPDR *rpdr, *rp; | |
3886 | struct rpdr_ext *erp; | |
3887 | PTR rtproc; | |
3888 | struct pdr_ext *epdr; | |
3889 | struct sym_ext *esym; | |
3890 | char *ss, **sv; | |
3891 | char *str; | |
3892 | unsigned long size, count; | |
3893 | unsigned long sindex; | |
3894 | unsigned long i; | |
3895 | PDR pdr; | |
3896 | SYMR sym; | |
3897 | const char *no_name_func = _("static procedure (no name)"); | |
3898 | ||
3899 | epdr = NULL; | |
3900 | rpdr = NULL; | |
3901 | esym = NULL; | |
3902 | ss = NULL; | |
3903 | sv = NULL; | |
3904 | ||
3905 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3906 | ||
3907 | sindex = strlen (no_name_func) + 1; | |
3908 | count = hdr->ipdMax; | |
3909 | if (count > 0) | |
3910 | { | |
3911 | size = swap->external_pdr_size; | |
3912 | ||
3913 | epdr = (struct pdr_ext *) bfd_malloc (size * count); | |
3914 | if (epdr == NULL) | |
3915 | goto error_return; | |
3916 | ||
3917 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr)) | |
3918 | goto error_return; | |
3919 | ||
3920 | size = sizeof (RPDR); | |
3921 | rp = rpdr = (RPDR *) bfd_malloc (size * count); | |
3922 | if (rpdr == NULL) | |
3923 | goto error_return; | |
3924 | ||
3925 | sv = (char **) bfd_malloc (sizeof (char *) * count); | |
3926 | if (sv == NULL) | |
3927 | goto error_return; | |
3928 | ||
3929 | count = hdr->isymMax; | |
3930 | size = swap->external_sym_size; | |
3931 | esym = (struct sym_ext *) bfd_malloc (size * count); | |
3932 | if (esym == NULL) | |
3933 | goto error_return; | |
3934 | ||
3935 | if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym)) | |
3936 | goto error_return; | |
3937 | ||
3938 | count = hdr->issMax; | |
3939 | ss = (char *) bfd_malloc (count); | |
3940 | if (ss == NULL) | |
3941 | goto error_return; | |
3942 | if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss)) | |
3943 | goto error_return; | |
3944 | ||
3945 | count = hdr->ipdMax; | |
3946 | for (i = 0; i < count; i++, rp++) | |
3947 | { | |
3948 | (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr); | |
3949 | (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym); | |
3950 | rp->adr = sym.value; | |
3951 | rp->regmask = pdr.regmask; | |
3952 | rp->regoffset = pdr.regoffset; | |
3953 | rp->fregmask = pdr.fregmask; | |
3954 | rp->fregoffset = pdr.fregoffset; | |
3955 | rp->frameoffset = pdr.frameoffset; | |
3956 | rp->framereg = pdr.framereg; | |
3957 | rp->pcreg = pdr.pcreg; | |
3958 | rp->irpss = sindex; | |
3959 | sv[i] = ss + sym.iss; | |
3960 | sindex += strlen (sv[i]) + 1; | |
3961 | } | |
3962 | } | |
3963 | ||
3964 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
3965 | size = BFD_ALIGN (size, 16); | |
3966 | rtproc = (PTR) bfd_alloc (abfd, size); | |
3967 | if (rtproc == NULL) | |
3968 | { | |
3969 | mips_elf_hash_table (info)->procedure_count = 0; | |
3970 | goto error_return; | |
3971 | } | |
3972 | ||
3973 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
3974 | ||
3975 | erp = (struct rpdr_ext *) rtproc; | |
3976 | memset (erp, 0, sizeof (struct rpdr_ext)); | |
3977 | erp++; | |
3978 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
3979 | strcpy (str, no_name_func); | |
3980 | str += strlen (no_name_func) + 1; | |
3981 | for (i = 0; i < count; i++) | |
3982 | { | |
3983 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
3984 | strcpy (str, sv[i]); | |
3985 | str += strlen (sv[i]) + 1; | |
3986 | } | |
3987 | ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr); | |
3988 | ||
3989 | /* Set the size and contents of .rtproc section. */ | |
3990 | s->_raw_size = size; | |
3991 | s->contents = (bfd_byte *) rtproc; | |
3992 | ||
3993 | /* Skip this section later on (I don't think this currently | |
3994 | matters, but someday it might). */ | |
3995 | s->link_order_head = (struct bfd_link_order *) NULL; | |
3996 | ||
3997 | if (epdr != NULL) | |
3998 | free (epdr); | |
3999 | if (rpdr != NULL) | |
4000 | free (rpdr); | |
4001 | if (esym != NULL) | |
4002 | free (esym); | |
4003 | if (ss != NULL) | |
4004 | free (ss); | |
4005 | if (sv != NULL) | |
4006 | free (sv); | |
4007 | ||
4008 | return true; | |
4009 | ||
4010 | error_return: | |
4011 | if (epdr != NULL) | |
4012 | free (epdr); | |
4013 | if (rpdr != NULL) | |
4014 | free (rpdr); | |
4015 | if (esym != NULL) | |
4016 | free (esym); | |
4017 | if (ss != NULL) | |
4018 | free (ss); | |
4019 | if (sv != NULL) | |
4020 | free (sv); | |
4021 | return false; | |
4022 | } | |
4023 | ||
4024 | /* A comparison routine used to sort .gptab entries. */ | |
4025 | ||
4026 | static int | |
4027 | gptab_compare (p1, p2) | |
4028 | const PTR p1; | |
4029 | const PTR p2; | |
4030 | { | |
4031 | const Elf32_gptab *a1 = (const Elf32_gptab *) p1; | |
4032 | const Elf32_gptab *a2 = (const Elf32_gptab *) p2; | |
4033 | ||
4034 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
4035 | } | |
4036 | ||
4037 | /* We need to use a special link routine to handle the .reginfo and | |
4038 | the .mdebug sections. We need to merge all instances of these | |
4039 | sections together, not write them all out sequentially. */ | |
4040 | ||
4041 | static boolean | |
4042 | mips_elf_final_link (abfd, info) | |
4043 | bfd *abfd; | |
4044 | struct bfd_link_info *info; | |
4045 | { | |
4046 | asection **secpp; | |
4047 | asection *o; | |
4048 | struct bfd_link_order *p; | |
4049 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
4050 | asection *rtproc_sec; | |
4051 | Elf32_RegInfo reginfo; | |
4052 | struct ecoff_debug_info debug; | |
4053 | const struct ecoff_debug_swap *swap | |
4054 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4055 | HDRR *symhdr = &debug.symbolic_header; | |
4056 | PTR mdebug_handle = NULL; | |
4057 | ||
4058 | /* Drop the .options section, since it has special semantics which I | |
4059 | haven't bothered to figure out. */ | |
4060 | for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) | |
4061 | { | |
4062 | if (strcmp ((*secpp)->name, ".options") == 0) | |
4063 | { | |
4064 | for (p = (*secpp)->link_order_head; p != NULL; p = p->next) | |
4065 | if (p->type == bfd_indirect_link_order) | |
4066 | p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; | |
4067 | (*secpp)->link_order_head = NULL; | |
4068 | *secpp = (*secpp)->next; | |
4069 | --abfd->section_count; | |
4070 | break; | |
4071 | } | |
4072 | } | |
4073 | ||
4074 | /* Get a value for the GP register. */ | |
4075 | if (elf_gp (abfd) == 0) | |
4076 | { | |
4077 | struct bfd_link_hash_entry *h; | |
4078 | ||
4079 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
4080 | if (h != (struct bfd_link_hash_entry *) NULL | |
4081 | && h->type == bfd_link_hash_defined) | |
4082 | elf_gp (abfd) = (h->u.def.value | |
4083 | + h->u.def.section->output_section->vma | |
4084 | + h->u.def.section->output_offset); | |
4085 | else if (info->relocateable) | |
4086 | { | |
4087 | bfd_vma lo; | |
4088 | ||
4089 | /* Make up a value. */ | |
4090 | lo = (bfd_vma) -1; | |
4091 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
4092 | { | |
4093 | if (o->vma < lo | |
4094 | && (strcmp (o->name, ".sbss") == 0 | |
4095 | || strcmp (o->name, ".sdata") == 0 | |
4096 | || strcmp (o->name, ".lit4") == 0 | |
4097 | || strcmp (o->name, ".lit8") == 0)) | |
4098 | lo = o->vma; | |
4099 | } | |
4100 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd); | |
4101 | } | |
4102 | else | |
4103 | { | |
4104 | /* If the relocate_section function needs to do a reloc | |
4105 | involving the GP value, it should make a reloc_dangerous | |
4106 | callback to warn that GP is not defined. */ | |
4107 | } | |
4108 | } | |
4109 | ||
4110 | /* Go through the sections and collect the .reginfo and .mdebug | |
4111 | information. */ | |
4112 | reginfo_sec = NULL; | |
4113 | mdebug_sec = NULL; | |
4114 | gptab_data_sec = NULL; | |
4115 | gptab_bss_sec = NULL; | |
4116 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
4117 | { | |
4118 | if (strcmp (o->name, ".reginfo") == 0) | |
4119 | { | |
4120 | memset (®info, 0, sizeof reginfo); | |
4121 | ||
4122 | /* We have found the .reginfo section in the output file. | |
4123 | Look through all the link_orders comprising it and merge | |
4124 | the information together. */ | |
4125 | for (p = o->link_order_head; | |
4126 | p != (struct bfd_link_order *) NULL; | |
4127 | p = p->next) | |
4128 | { | |
4129 | asection *input_section; | |
4130 | bfd *input_bfd; | |
4131 | Elf32_External_RegInfo ext; | |
4132 | Elf32_RegInfo sub; | |
4133 | ||
4134 | if (p->type != bfd_indirect_link_order) | |
4135 | { | |
4136 | if (p->type == bfd_fill_link_order) | |
4137 | continue; | |
4138 | abort (); | |
4139 | } | |
4140 | ||
4141 | input_section = p->u.indirect.section; | |
4142 | input_bfd = input_section->owner; | |
4143 | ||
4144 | /* The linker emulation code has probably clobbered the | |
4145 | size to be zero bytes. */ | |
4146 | if (input_section->_raw_size == 0) | |
4147 | input_section->_raw_size = sizeof (Elf32_External_RegInfo); | |
4148 | ||
4149 | if (! bfd_get_section_contents (input_bfd, input_section, | |
4150 | (PTR) &ext, | |
4151 | (file_ptr) 0, | |
4152 | sizeof ext)) | |
4153 | return false; | |
4154 | ||
4155 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
4156 | ||
4157 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
4158 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
4159 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
4160 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
4161 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
4162 | ||
4163 | /* ri_gp_value is set by the function | |
4164 | mips_elf32_section_processing when the section is | |
4165 | finally written out. */ | |
4166 | ||
4167 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4168 | elf_link_input_bfd ignores this section. */ | |
4169 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4170 | } | |
4171 | ||
4172 | /* Size has been set in mips_elf_always_size_sections */ | |
4173 | BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo)); | |
4174 | ||
4175 | /* Skip this section later on (I don't think this currently | |
4176 | matters, but someday it might). */ | |
4177 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4178 | ||
4179 | reginfo_sec = o; | |
4180 | } | |
4181 | ||
4182 | if (strcmp (o->name, ".mdebug") == 0) | |
4183 | { | |
4184 | struct extsym_info einfo; | |
4185 | ||
4186 | /* We have found the .mdebug section in the output file. | |
4187 | Look through all the link_orders comprising it and merge | |
4188 | the information together. */ | |
4189 | symhdr->magic = swap->sym_magic; | |
4190 | /* FIXME: What should the version stamp be? */ | |
4191 | symhdr->vstamp = 0; | |
4192 | symhdr->ilineMax = 0; | |
4193 | symhdr->cbLine = 0; | |
4194 | symhdr->idnMax = 0; | |
4195 | symhdr->ipdMax = 0; | |
4196 | symhdr->isymMax = 0; | |
4197 | symhdr->ioptMax = 0; | |
4198 | symhdr->iauxMax = 0; | |
4199 | symhdr->issMax = 0; | |
4200 | symhdr->issExtMax = 0; | |
4201 | symhdr->ifdMax = 0; | |
4202 | symhdr->crfd = 0; | |
4203 | symhdr->iextMax = 0; | |
4204 | ||
4205 | /* We accumulate the debugging information itself in the | |
4206 | debug_info structure. */ | |
4207 | debug.line = NULL; | |
4208 | debug.external_dnr = NULL; | |
4209 | debug.external_pdr = NULL; | |
4210 | debug.external_sym = NULL; | |
4211 | debug.external_opt = NULL; | |
4212 | debug.external_aux = NULL; | |
4213 | debug.ss = NULL; | |
4214 | debug.ssext = debug.ssext_end = NULL; | |
4215 | debug.external_fdr = NULL; | |
4216 | debug.external_rfd = NULL; | |
4217 | debug.external_ext = debug.external_ext_end = NULL; | |
4218 | ||
4219 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4220 | if (mdebug_handle == (PTR) NULL) | |
4221 | return false; | |
4222 | ||
4223 | if (SGI_COMPAT (abfd)) | |
4224 | { | |
4225 | asection *s; | |
4226 | EXTR esym; | |
4227 | bfd_vma last; | |
4228 | unsigned int i; | |
4229 | static const char * const name[] = | |
4230 | { ".text", ".init", ".fini", ".data", | |
4231 | ".rodata", ".sdata", ".sbss", ".bss" }; | |
4232 | static const int sc[] = { scText, scInit, scFini, scData, | |
4233 | scRData, scSData, scSBss, scBss }; | |
4234 | ||
4235 | esym.jmptbl = 0; | |
4236 | esym.cobol_main = 0; | |
4237 | esym.weakext = 0; | |
4238 | esym.reserved = 0; | |
4239 | esym.ifd = ifdNil; | |
4240 | esym.asym.iss = issNil; | |
4241 | esym.asym.st = stLocal; | |
4242 | esym.asym.reserved = 0; | |
4243 | esym.asym.index = indexNil; | |
4244 | last = 0; | |
4245 | for (i = 0; i < 8; i++) | |
4246 | { | |
4247 | esym.asym.sc = sc[i]; | |
4248 | s = bfd_get_section_by_name (abfd, name[i]); | |
4249 | if (s != NULL) | |
4250 | { | |
4251 | esym.asym.value = s->vma; | |
4252 | last = s->vma + s->_raw_size; | |
4253 | } | |
4254 | else | |
4255 | esym.asym.value = last; | |
4256 | ||
4257 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4258 | name[i], &esym)) | |
4259 | return false; | |
4260 | } | |
4261 | } | |
4262 | ||
4263 | for (p = o->link_order_head; | |
4264 | p != (struct bfd_link_order *) NULL; | |
4265 | p = p->next) | |
4266 | { | |
4267 | asection *input_section; | |
4268 | bfd *input_bfd; | |
4269 | const struct ecoff_debug_swap *input_swap; | |
4270 | struct ecoff_debug_info input_debug; | |
4271 | char *eraw_src; | |
4272 | char *eraw_end; | |
4273 | ||
4274 | if (p->type != bfd_indirect_link_order) | |
4275 | { | |
4276 | if (p->type == bfd_fill_link_order) | |
4277 | continue; | |
4278 | abort (); | |
4279 | } | |
4280 | ||
4281 | input_section = p->u.indirect.section; | |
4282 | input_bfd = input_section->owner; | |
4283 | ||
4284 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
4285 | || (get_elf_backend_data (input_bfd) | |
4286 | ->elf_backend_ecoff_debug_swap) == NULL) | |
4287 | { | |
4288 | /* I don't know what a non MIPS ELF bfd would be | |
4289 | doing with a .mdebug section, but I don't really | |
4290 | want to deal with it. */ | |
4291 | continue; | |
4292 | } | |
4293 | ||
4294 | input_swap = (get_elf_backend_data (input_bfd) | |
4295 | ->elf_backend_ecoff_debug_swap); | |
4296 | ||
4297 | BFD_ASSERT (p->size == input_section->_raw_size); | |
4298 | ||
4299 | /* The ECOFF linking code expects that we have already | |
4300 | read in the debugging information and set up an | |
4301 | ecoff_debug_info structure, so we do that now. */ | |
4302 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
4303 | &input_debug)) | |
4304 | return false; | |
4305 | ||
4306 | if (! (bfd_ecoff_debug_accumulate | |
4307 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
4308 | &input_debug, input_swap, info))) | |
4309 | return false; | |
4310 | ||
4311 | /* Loop through the external symbols. For each one with | |
4312 | interesting information, try to find the symbol in | |
4313 | the linker global hash table and save the information | |
4314 | for the output external symbols. */ | |
4315 | eraw_src = input_debug.external_ext; | |
4316 | eraw_end = (eraw_src | |
4317 | + (input_debug.symbolic_header.iextMax | |
4318 | * input_swap->external_ext_size)); | |
4319 | for (; | |
4320 | eraw_src < eraw_end; | |
4321 | eraw_src += input_swap->external_ext_size) | |
4322 | { | |
4323 | EXTR ext; | |
4324 | const char *name; | |
4325 | struct mips_elf_link_hash_entry *h; | |
4326 | ||
4327 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
4328 | if (ext.asym.sc == scNil | |
4329 | || ext.asym.sc == scUndefined | |
4330 | || ext.asym.sc == scSUndefined) | |
4331 | continue; | |
4332 | ||
4333 | name = input_debug.ssext + ext.asym.iss; | |
4334 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
4335 | name, false, false, true); | |
4336 | if (h == NULL || h->esym.ifd != -2) | |
4337 | continue; | |
4338 | ||
4339 | if (ext.ifd != -1) | |
4340 | { | |
4341 | BFD_ASSERT (ext.ifd | |
4342 | < input_debug.symbolic_header.ifdMax); | |
4343 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
4344 | } | |
4345 | ||
4346 | h->esym = ext; | |
4347 | } | |
4348 | ||
4349 | /* Free up the information we just read. */ | |
4350 | free (input_debug.line); | |
4351 | free (input_debug.external_dnr); | |
4352 | free (input_debug.external_pdr); | |
4353 | free (input_debug.external_sym); | |
4354 | free (input_debug.external_opt); | |
4355 | free (input_debug.external_aux); | |
4356 | free (input_debug.ss); | |
4357 | free (input_debug.ssext); | |
4358 | free (input_debug.external_fdr); | |
4359 | free (input_debug.external_rfd); | |
4360 | free (input_debug.external_ext); | |
4361 | ||
4362 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4363 | elf_link_input_bfd ignores this section. */ | |
4364 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4365 | } | |
4366 | ||
4367 | if (SGI_COMPAT (abfd) && info->shared) | |
4368 | { | |
4369 | /* Create .rtproc section. */ | |
4370 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
4371 | if (rtproc_sec == NULL) | |
4372 | { | |
4373 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4374 | | SEC_LINKER_CREATED | SEC_READONLY); | |
4375 | ||
4376 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); | |
4377 | if (rtproc_sec == NULL | |
4378 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) | |
4379 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) | |
4380 | return false; | |
4381 | } | |
4382 | ||
4383 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
4384 | info, rtproc_sec, &debug)) | |
4385 | return false; | |
4386 | } | |
4387 | ||
4388 | /* Build the external symbol information. */ | |
4389 | einfo.abfd = abfd; | |
4390 | einfo.info = info; | |
4391 | einfo.debug = &debug; | |
4392 | einfo.swap = swap; | |
4393 | einfo.failed = false; | |
4394 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
4395 | mips_elf_output_extsym, | |
4396 | (PTR) &einfo); | |
4397 | if (einfo.failed) | |
4398 | return false; | |
4399 | ||
4400 | /* Set the size of the .mdebug section. */ | |
4401 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
4402 | ||
4403 | /* Skip this section later on (I don't think this currently | |
4404 | matters, but someday it might). */ | |
4405 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4406 | ||
4407 | mdebug_sec = o; | |
4408 | } | |
4409 | ||
4410 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
4411 | { | |
4412 | const char *subname; | |
4413 | unsigned int c; | |
4414 | Elf32_gptab *tab; | |
4415 | Elf32_External_gptab *ext_tab; | |
4416 | unsigned int i; | |
4417 | ||
4418 | /* The .gptab.sdata and .gptab.sbss sections hold | |
4419 | information describing how the small data area would | |
4420 | change depending upon the -G switch. These sections | |
4421 | not used in executables files. */ | |
4422 | if (! info->relocateable) | |
4423 | { | |
4424 | asection **secpp; | |
4425 | ||
4426 | for (p = o->link_order_head; | |
4427 | p != (struct bfd_link_order *) NULL; | |
4428 | p = p->next) | |
4429 | { | |
4430 | asection *input_section; | |
4431 | ||
4432 | if (p->type != bfd_indirect_link_order) | |
4433 | { | |
4434 | if (p->type == bfd_fill_link_order) | |
4435 | continue; | |
4436 | abort (); | |
4437 | } | |
4438 | ||
4439 | input_section = p->u.indirect.section; | |
4440 | ||
4441 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4442 | elf_link_input_bfd ignores this section. */ | |
4443 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4444 | } | |
4445 | ||
4446 | /* Skip this section later on (I don't think this | |
4447 | currently matters, but someday it might). */ | |
4448 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4449 | ||
4450 | /* Really remove the section. */ | |
4451 | for (secpp = &abfd->sections; | |
4452 | *secpp != o; | |
4453 | secpp = &(*secpp)->next) | |
4454 | ; | |
4455 | *secpp = (*secpp)->next; | |
4456 | --abfd->section_count; | |
4457 | ||
4458 | continue; | |
4459 | } | |
4460 | ||
4461 | /* There is one gptab for initialized data, and one for | |
4462 | uninitialized data. */ | |
4463 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
4464 | gptab_data_sec = o; | |
4465 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
4466 | gptab_bss_sec = o; | |
4467 | else | |
4468 | { | |
4469 | (*_bfd_error_handler) | |
4470 | (_("%s: illegal section name `%s'"), | |
4471 | bfd_get_filename (abfd), o->name); | |
4472 | bfd_set_error (bfd_error_nonrepresentable_section); | |
4473 | return false; | |
4474 | } | |
4475 | ||
4476 | /* The linker script always combines .gptab.data and | |
4477 | .gptab.sdata into .gptab.sdata, and likewise for | |
4478 | .gptab.bss and .gptab.sbss. It is possible that there is | |
4479 | no .sdata or .sbss section in the output file, in which | |
4480 | case we must change the name of the output section. */ | |
4481 | subname = o->name + sizeof ".gptab" - 1; | |
4482 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
4483 | { | |
4484 | if (o == gptab_data_sec) | |
4485 | o->name = ".gptab.data"; | |
4486 | else | |
4487 | o->name = ".gptab.bss"; | |
4488 | subname = o->name + sizeof ".gptab" - 1; | |
4489 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
4490 | } | |
4491 | ||
4492 | /* Set up the first entry. */ | |
4493 | c = 1; | |
4494 | tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); | |
4495 | if (tab == NULL) | |
4496 | return false; | |
4497 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); | |
4498 | tab[0].gt_header.gt_unused = 0; | |
4499 | ||
4500 | /* Combine the input sections. */ | |
4501 | for (p = o->link_order_head; | |
4502 | p != (struct bfd_link_order *) NULL; | |
4503 | p = p->next) | |
4504 | { | |
4505 | asection *input_section; | |
4506 | bfd *input_bfd; | |
4507 | bfd_size_type size; | |
4508 | unsigned long last; | |
4509 | bfd_size_type gpentry; | |
4510 | ||
4511 | if (p->type != bfd_indirect_link_order) | |
4512 | { | |
4513 | if (p->type == bfd_fill_link_order) | |
4514 | continue; | |
4515 | abort (); | |
4516 | } | |
4517 | ||
4518 | input_section = p->u.indirect.section; | |
4519 | input_bfd = input_section->owner; | |
4520 | ||
4521 | /* Combine the gptab entries for this input section one | |
4522 | by one. We know that the input gptab entries are | |
4523 | sorted by ascending -G value. */ | |
4524 | size = bfd_section_size (input_bfd, input_section); | |
4525 | last = 0; | |
4526 | for (gpentry = sizeof (Elf32_External_gptab); | |
4527 | gpentry < size; | |
4528 | gpentry += sizeof (Elf32_External_gptab)) | |
4529 | { | |
4530 | Elf32_External_gptab ext_gptab; | |
4531 | Elf32_gptab int_gptab; | |
4532 | unsigned long val; | |
4533 | unsigned long add; | |
4534 | boolean exact; | |
4535 | unsigned int look; | |
4536 | ||
4537 | if (! (bfd_get_section_contents | |
4538 | (input_bfd, input_section, (PTR) &ext_gptab, | |
4539 | gpentry, sizeof (Elf32_External_gptab)))) | |
4540 | { | |
4541 | free (tab); | |
4542 | return false; | |
4543 | } | |
4544 | ||
4545 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
4546 | &int_gptab); | |
4547 | val = int_gptab.gt_entry.gt_g_value; | |
4548 | add = int_gptab.gt_entry.gt_bytes - last; | |
4549 | ||
4550 | exact = false; | |
4551 | for (look = 1; look < c; look++) | |
4552 | { | |
4553 | if (tab[look].gt_entry.gt_g_value >= val) | |
4554 | tab[look].gt_entry.gt_bytes += add; | |
4555 | ||
4556 | if (tab[look].gt_entry.gt_g_value == val) | |
4557 | exact = true; | |
4558 | } | |
4559 | ||
4560 | if (! exact) | |
4561 | { | |
4562 | Elf32_gptab *new_tab; | |
4563 | unsigned int max; | |
4564 | ||
4565 | /* We need a new table entry. */ | |
4566 | new_tab = ((Elf32_gptab *) | |
4567 | bfd_realloc ((PTR) tab, | |
4568 | (c + 1) * sizeof (Elf32_gptab))); | |
4569 | if (new_tab == NULL) | |
4570 | { | |
4571 | free (tab); | |
4572 | return false; | |
4573 | } | |
4574 | tab = new_tab; | |
4575 | tab[c].gt_entry.gt_g_value = val; | |
4576 | tab[c].gt_entry.gt_bytes = add; | |
4577 | ||
4578 | /* Merge in the size for the next smallest -G | |
4579 | value, since that will be implied by this new | |
4580 | value. */ | |
4581 | max = 0; | |
4582 | for (look = 1; look < c; look++) | |
4583 | { | |
4584 | if (tab[look].gt_entry.gt_g_value < val | |
4585 | && (max == 0 | |
4586 | || (tab[look].gt_entry.gt_g_value | |
4587 | > tab[max].gt_entry.gt_g_value))) | |
4588 | max = look; | |
4589 | } | |
4590 | if (max != 0) | |
4591 | tab[c].gt_entry.gt_bytes += | |
4592 | tab[max].gt_entry.gt_bytes; | |
4593 | ||
4594 | ++c; | |
4595 | } | |
4596 | ||
4597 | last = int_gptab.gt_entry.gt_bytes; | |
4598 | } | |
4599 | ||
4600 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4601 | elf_link_input_bfd ignores this section. */ | |
4602 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4603 | } | |
4604 | ||
4605 | /* The table must be sorted by -G value. */ | |
4606 | if (c > 2) | |
4607 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
4608 | ||
4609 | /* Swap out the table. */ | |
4610 | ext_tab = ((Elf32_External_gptab *) | |
4611 | bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); | |
4612 | if (ext_tab == NULL) | |
4613 | { | |
4614 | free (tab); | |
4615 | return false; | |
4616 | } | |
4617 | ||
4618 | for (i = 0; i < c; i++) | |
4619 | bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i); | |
4620 | free (tab); | |
4621 | ||
4622 | o->_raw_size = c * sizeof (Elf32_External_gptab); | |
4623 | o->contents = (bfd_byte *) ext_tab; | |
4624 | ||
4625 | /* Skip this section later on (I don't think this currently | |
4626 | matters, but someday it might). */ | |
4627 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4628 | } | |
4629 | } | |
4630 | ||
4631 | /* Invoke the regular ELF backend linker to do all the work. */ | |
4632 | if (! bfd_elf32_bfd_final_link (abfd, info)) | |
4633 | return false; | |
4634 | ||
4635 | /* Now write out the computed sections. */ | |
4636 | ||
4637 | if (reginfo_sec != (asection *) NULL) | |
4638 | { | |
4639 | Elf32_External_RegInfo ext; | |
4640 | ||
4641 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
4642 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, | |
4643 | (file_ptr) 0, sizeof ext)) | |
4644 | return false; | |
4645 | } | |
4646 | ||
4647 | if (mdebug_sec != (asection *) NULL) | |
4648 | { | |
4649 | BFD_ASSERT (abfd->output_has_begun); | |
4650 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
4651 | swap, info, | |
4652 | mdebug_sec->filepos)) | |
4653 | return false; | |
4654 | ||
4655 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
4656 | } | |
4657 | ||
4658 | if (gptab_data_sec != (asection *) NULL) | |
4659 | { | |
4660 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
4661 | gptab_data_sec->contents, | |
4662 | (file_ptr) 0, | |
4663 | gptab_data_sec->_raw_size)) | |
4664 | return false; | |
4665 | } | |
4666 | ||
4667 | if (gptab_bss_sec != (asection *) NULL) | |
4668 | { | |
4669 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
4670 | gptab_bss_sec->contents, | |
4671 | (file_ptr) 0, | |
4672 | gptab_bss_sec->_raw_size)) | |
4673 | return false; | |
4674 | } | |
4675 | ||
4676 | if (SGI_COMPAT (abfd)) | |
4677 | { | |
4678 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
4679 | if (rtproc_sec != NULL) | |
4680 | { | |
4681 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
4682 | rtproc_sec->contents, | |
4683 | (file_ptr) 0, | |
4684 | rtproc_sec->_raw_size)) | |
4685 | return false; | |
4686 | } | |
4687 | } | |
4688 | ||
4689 | return true; | |
4690 | } | |
4691 | ||
4692 | /* Handle a MIPS ELF HI16 reloc. */ | |
4693 | ||
4694 | static void | |
4695 | mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend) | |
4696 | bfd *input_bfd; | |
4697 | Elf_Internal_Rela *relhi; | |
4698 | Elf_Internal_Rela *rello; | |
4699 | bfd_byte *contents; | |
4700 | bfd_vma addend; | |
4701 | { | |
4702 | bfd_vma insn; | |
4703 | bfd_vma addlo; | |
4704 | ||
4705 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
4706 | ||
4707 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
4708 | addlo &= 0xffff; | |
4709 | ||
4710 | addend += ((insn & 0xffff) << 16) + addlo; | |
4711 | ||
4712 | if ((addlo & 0x8000) != 0) | |
4713 | addend -= 0x10000; | |
4714 | if ((addend & 0x8000) != 0) | |
4715 | addend += 0x10000; | |
4716 | ||
4717 | bfd_put_32 (input_bfd, | |
4718 | (insn & 0xffff0000) | ((addend >> 16) & 0xffff), | |
4719 | contents + relhi->r_offset); | |
4720 | } | |
4721 | ||
4722 | /* Handle a MIPS ELF local GOT16 reloc. */ | |
4723 | ||
4724 | static boolean | |
4725 | mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello, | |
4726 | contents, addend) | |
4727 | bfd *output_bfd; | |
4728 | bfd *input_bfd; | |
4729 | asection *sgot; | |
4730 | Elf_Internal_Rela *relhi; | |
4731 | Elf_Internal_Rela *rello; | |
4732 | bfd_byte *contents; | |
4733 | bfd_vma addend; | |
4734 | { | |
4735 | unsigned int assigned_gotno; | |
4736 | unsigned int i; | |
4737 | bfd_vma insn; | |
4738 | bfd_vma addlo; | |
4739 | bfd_vma address; | |
4740 | bfd_vma hipage; | |
4741 | bfd_byte *got_contents; | |
4742 | struct mips_got_info *g; | |
4743 | ||
4744 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
4745 | ||
4746 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
4747 | addlo &= 0xffff; | |
4748 | ||
4749 | addend += ((insn & 0xffff) << 16) + addlo; | |
4750 | ||
4751 | if ((addlo & 0x8000) != 0) | |
4752 | addend -= 0x10000; | |
4753 | if ((addend & 0x8000) != 0) | |
4754 | addend += 0x10000; | |
4755 | ||
4756 | /* Get a got entry representing requested hipage. */ | |
4757 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
4758 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
4759 | BFD_ASSERT (g != NULL); | |
4760 | ||
4761 | assigned_gotno = g->assigned_gotno; | |
4762 | got_contents = sgot->contents; | |
4763 | hipage = addend & 0xffff0000; | |
4764 | ||
4765 | for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++) | |
4766 | { | |
4767 | address = bfd_get_32 (input_bfd, got_contents + i * 4); | |
4768 | if (hipage == (address & 0xffff0000)) | |
4769 | break; | |
4770 | } | |
4771 | ||
4772 | if (i == assigned_gotno) | |
4773 | { | |
4774 | if (assigned_gotno >= g->local_gotno) | |
4775 | { | |
4776 | (*_bfd_error_handler) | |
4777 | (_("more got entries are needed for hipage relocations")); | |
4778 | bfd_set_error (bfd_error_bad_value); | |
4779 | return false; | |
4780 | } | |
4781 | ||
4782 | bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4); | |
4783 | ++g->assigned_gotno; | |
4784 | } | |
4785 | ||
4786 | i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4; | |
4787 | bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff), | |
4788 | contents + relhi->r_offset); | |
4789 | ||
4790 | return true; | |
4791 | } | |
4792 | ||
4793 | /* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */ | |
4794 | ||
4795 | static void | |
4796 | mips_elf_relocate_global_got (input_bfd, rel, contents, offset) | |
4797 | bfd *input_bfd; | |
4798 | Elf_Internal_Rela *rel; | |
4799 | bfd_byte *contents; | |
4800 | bfd_vma offset; | |
4801 | { | |
4802 | bfd_vma insn; | |
4803 | ||
4804 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4805 | bfd_put_32 (input_bfd, | |
4806 | (insn & 0xffff0000) | (offset & 0xffff), | |
4807 | contents + rel->r_offset); | |
4808 | } | |
4809 | ||
4810 | /* Relocate a MIPS ELF section. */ | |
4811 | ||
4812 | static boolean | |
4813 | mips_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
4814 | contents, relocs, local_syms, local_sections) | |
4815 | bfd *output_bfd; | |
4816 | struct bfd_link_info *info; | |
4817 | bfd *input_bfd; | |
4818 | asection *input_section; | |
4819 | bfd_byte *contents; | |
4820 | Elf_Internal_Rela *relocs; | |
4821 | Elf_Internal_Sym *local_syms; | |
4822 | asection **local_sections; | |
4823 | { | |
4824 | Elf_Internal_Shdr *symtab_hdr; | |
4825 | size_t locsymcount; | |
4826 | size_t extsymoff; | |
4827 | asection *sgot, *sreloc, *scpt; | |
4828 | bfd *dynobj; | |
4829 | bfd_vma gp; | |
4830 | Elf_Internal_Rela *rel; | |
4831 | Elf_Internal_Rela *relend; | |
4832 | struct mips_got_info *g; | |
4833 | ||
4834 | dynobj = elf_hash_table (info)->dynobj; | |
4835 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4836 | ||
4837 | sgot = NULL; | |
4838 | sreloc = NULL; | |
4839 | if (dynobj == NULL || ! SGI_COMPAT (output_bfd)) | |
4840 | scpt = NULL; | |
4841 | else | |
4842 | scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
4843 | g = NULL; | |
4844 | ||
4845 | if (elf_bad_symtab (input_bfd)) | |
4846 | { | |
4847 | locsymcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
4848 | extsymoff = 0; | |
4849 | } | |
4850 | else | |
4851 | { | |
4852 | locsymcount = symtab_hdr->sh_info; | |
4853 | extsymoff = symtab_hdr->sh_info; | |
4854 | } | |
4855 | ||
4856 | gp = _bfd_get_gp_value (output_bfd); | |
4857 | ||
4858 | rel = relocs; | |
4859 | relend = relocs + input_section->reloc_count; | |
4860 | for (; rel < relend; rel++) | |
4861 | { | |
4862 | int r_type; | |
4863 | reloc_howto_type *howto; | |
4864 | unsigned long r_symndx; | |
4865 | bfd_vma addend; | |
4866 | struct elf_link_hash_entry *h; | |
4867 | asection *sec; | |
4868 | Elf_Internal_Sym *sym; | |
4869 | struct mips_elf_link_hash_entry *mh; | |
4870 | int other; | |
4871 | bfd_reloc_status_type r; | |
4872 | ||
4873 | r_type = ELF32_R_TYPE (rel->r_info); | |
4874 | if (r_type == R_MIPS_GNU_VTINHERIT | |
4875 | || r_type == R_MIPS_GNU_VTENTRY) | |
4876 | continue; | |
4877 | if ((r_type < 0 || r_type >= (int) R_MIPS_max) | |
4878 | && r_type != R_MIPS16_26 | |
4879 | && r_type != R_MIPS16_GPREL) | |
4880 | { | |
4881 | bfd_set_error (bfd_error_bad_value); | |
4882 | return false; | |
4883 | } | |
4884 | if (r_type == R_MIPS16_26) | |
4885 | howto = &elf_mips16_jump_howto; | |
4886 | else if (r_type == R_MIPS16_GPREL) | |
4887 | howto = &elf_mips16_gprel_howto; | |
4888 | else | |
4889 | howto = elf_mips_howto_table + r_type; | |
4890 | ||
4891 | if (dynobj != NULL | |
4892 | && (r_type == R_MIPS_CALL16 | |
4893 | || r_type == R_MIPS_GOT16 | |
4894 | || r_type == R_MIPS_CALL_HI16 | |
4895 | || r_type == R_MIPS_CALL_LO16 | |
4896 | || r_type == R_MIPS_GOT_HI16 | |
4897 | || r_type == R_MIPS_GOT_LO16)) | |
4898 | { | |
4899 | /* We need the .got section. */ | |
4900 | if (sgot == NULL) | |
4901 | { | |
4902 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4903 | BFD_ASSERT (sgot != NULL); | |
4904 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
4905 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
4906 | BFD_ASSERT (g != NULL); | |
4907 | } | |
4908 | } | |
4909 | ||
4910 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4911 | ||
4912 | /* Mix in the change in GP address for a GP relative reloc. */ | |
4913 | if (r_type != R_MIPS_GPREL16 | |
4914 | && r_type != R_MIPS_LITERAL | |
4915 | && r_type != R_MIPS_GPREL32 | |
4916 | && r_type != R_MIPS16_GPREL) | |
4917 | addend = 0; | |
4918 | else | |
4919 | { | |
4920 | if (gp == 0) | |
4921 | { | |
4922 | if (! ((*info->callbacks->reloc_dangerous) | |
4923 | (info, | |
4924 | _("GP relative relocation when GP not defined"), | |
4925 | input_bfd, input_section, | |
4926 | rel->r_offset))) | |
4927 | return false; | |
4928 | /* Only give the error once per link. */ | |
4929 | gp = 4; | |
4930 | _bfd_set_gp_value (output_bfd, gp); | |
4931 | } | |
4932 | ||
4933 | if (r_symndx < extsymoff | |
4934 | || (elf_bad_symtab (input_bfd) | |
4935 | && local_sections[r_symndx] != NULL)) | |
4936 | { | |
4937 | /* This is a relocation against a section. The current | |
4938 | addend in the instruction is the difference between | |
4939 | INPUT_SECTION->vma and the GP value of INPUT_BFD. We | |
4940 | must change this to be the difference between the | |
4941 | final definition (which will end up in RELOCATION) | |
4942 | and the GP value of OUTPUT_BFD (which is in GP). */ | |
4943 | addend = elf_gp (input_bfd) - gp; | |
4944 | } | |
4945 | else if (! info->relocateable) | |
4946 | { | |
4947 | /* We are doing a final link. The current addend in the | |
4948 | instruction is simply the desired offset into the | |
4949 | symbol (normally zero). We want the instruction to | |
4950 | hold the difference between the final definition of | |
4951 | the symbol (which will end up in RELOCATION) and the | |
4952 | GP value of OUTPUT_BFD (which is in GP). */ | |
4953 | addend = - gp; | |
4954 | } | |
4955 | else | |
4956 | { | |
4957 | /* We are generating relocateable output, and we aren't | |
4958 | going to define this symbol, so we just leave the | |
4959 | instruction alone. */ | |
4960 | addend = 0; | |
4961 | } | |
4962 | } | |
4963 | ||
4964 | h = NULL; | |
4965 | sym = NULL; | |
4966 | sec = NULL; | |
4967 | if (info->relocateable) | |
4968 | { | |
4969 | /* This is a relocateable link. We don't have to change | |
4970 | anything, unless the reloc is against a section symbol, | |
4971 | in which case we have to adjust according to where the | |
4972 | section symbol winds up in the output section. */ | |
4973 | if (r_symndx >= locsymcount | |
4974 | || (elf_bad_symtab (input_bfd) | |
4975 | && local_sections[r_symndx] == NULL)) | |
4976 | r = bfd_reloc_ok; | |
4977 | else | |
4978 | { | |
4979 | sym = local_syms + r_symndx; | |
4980 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4981 | r = bfd_reloc_ok; | |
4982 | else | |
4983 | { | |
4984 | sec = local_sections[r_symndx]; | |
4985 | ||
4986 | /* It would be logical to add sym->st_value here, | |
4987 | but Irix 5 sometimes generates a garbage symbol | |
4988 | value. */ | |
4989 | addend += sec->output_offset; | |
4990 | ||
4991 | /* If this is HI16 or GOT16 with an associated LO16, | |
4992 | adjust the addend accordingly. Otherwise, just | |
4993 | relocate. */ | |
4994 | if (r_type == R_MIPS_64 && bfd_big_endian (input_bfd)) | |
4995 | r = _bfd_relocate_contents (howto, input_bfd, | |
4996 | addend, | |
4997 | contents + rel->r_offset + 4); | |
4998 | else if (r_type != R_MIPS_HI16 && r_type != R_MIPS_GOT16) | |
4999 | r = _bfd_relocate_contents (howto, input_bfd, | |
5000 | addend, | |
5001 | contents + rel->r_offset); | |
5002 | else | |
5003 | { | |
5004 | Elf_Internal_Rela *lorel; | |
5005 | ||
5006 | /* As a GNU extension, permit an arbitrary | |
5007 | number of R_MIPS_HI16 relocs before the | |
5008 | R_MIPS_LO16 reloc. This permits gcc to emit | |
5009 | the HI and LO relocs itself. */ | |
5010 | if (r_type == R_MIPS_GOT16) | |
5011 | lorel = rel + 1; | |
5012 | else | |
5013 | { | |
5014 | for (lorel = rel + 1; | |
5015 | (lorel < relend | |
5016 | && (ELF32_R_TYPE (lorel->r_info) | |
5017 | == R_MIPS_HI16)); | |
5018 | lorel++) | |
5019 | ; | |
5020 | } | |
5021 | if (lorel < relend | |
5022 | && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) | |
5023 | { | |
5024 | mips_elf_relocate_hi16 (input_bfd, rel, lorel, | |
5025 | contents, addend); | |
5026 | r = bfd_reloc_ok; | |
5027 | } | |
5028 | else | |
5029 | r = _bfd_relocate_contents (howto, input_bfd, | |
5030 | addend, | |
5031 | contents + rel->r_offset); | |
5032 | } | |
5033 | } | |
5034 | } | |
5035 | } | |
5036 | else | |
5037 | { | |
5038 | bfd_vma relocation; | |
5039 | boolean local; | |
5040 | boolean undefined_error; | |
5041 | ||
5042 | /* This is a final link. */ | |
5043 | undefined_error = false; | |
5044 | sym = NULL; | |
5045 | if (r_symndx < extsymoff | |
5046 | || (elf_bad_symtab (input_bfd) | |
5047 | && local_sections[r_symndx] != NULL)) | |
5048 | { | |
5049 | local = true; | |
5050 | sym = local_syms + r_symndx; | |
5051 | sec = local_sections[r_symndx]; | |
5052 | relocation = (sec->output_section->vma | |
5053 | + sec->output_offset); | |
5054 | ||
5055 | /* It would be logical to always add sym->st_value here, | |
5056 | but Irix 5 sometimes generates a garbage symbol | |
5057 | value. */ | |
5058 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
5059 | relocation += sym->st_value; | |
5060 | ||
5061 | /* mips16 text labels should be treated as odd. */ | |
5062 | if (sym->st_other == STO_MIPS16) | |
5063 | ++relocation; | |
5064 | } | |
5065 | else | |
5066 | { | |
5067 | long indx; | |
5068 | ||
5069 | local = false; | |
5070 | indx = r_symndx - extsymoff; | |
5071 | h = elf_sym_hashes (input_bfd)[indx]; | |
5072 | while (h->root.type == bfd_link_hash_indirect | |
5073 | || h->root.type == bfd_link_hash_warning) | |
5074 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5075 | if (strcmp (h->root.root.string, "_gp_disp") == 0) | |
5076 | { | |
5077 | if (gp == 0) | |
5078 | { | |
5079 | if (! ((*info->callbacks->reloc_dangerous) | |
5080 | (info, | |
5081 | _("_gp_disp used when GP not defined"), | |
5082 | input_bfd, input_section, | |
5083 | rel->r_offset))) | |
5084 | return false; | |
5085 | /* Only give the error once per link. */ | |
5086 | gp = 4; | |
5087 | _bfd_set_gp_value (output_bfd, gp); | |
5088 | relocation = 0; | |
5089 | } | |
5090 | else | |
5091 | { | |
5092 | sec = input_section; | |
5093 | if (sec->output_section != NULL) | |
5094 | relocation = (gp | |
5095 | - (rel->r_offset | |
5096 | + sec->output_section->vma | |
5097 | + sec->output_offset)); | |
5098 | else | |
5099 | relocation = gp - rel->r_offset; | |
5100 | if (r_type == R_MIPS_LO16) | |
5101 | relocation += 4; | |
5102 | } | |
5103 | } | |
5104 | else if (h->root.type == bfd_link_hash_defined | |
5105 | || h->root.type == bfd_link_hash_defweak) | |
5106 | { | |
5107 | sec = h->root.u.def.section; | |
5108 | if (sec->output_section == NULL) | |
5109 | relocation = 0; | |
5110 | else | |
5111 | relocation = (h->root.u.def.value | |
5112 | + sec->output_section->vma | |
5113 | + sec->output_offset); | |
5114 | } | |
5115 | else if (h->root.type == bfd_link_hash_undefweak) | |
5116 | relocation = 0; | |
5117 | else if (info->shared && !info->symbolic && !info->no_undefined) | |
5118 | relocation = 0; | |
5119 | else if (strcmp (h->root.root.string, "_DYNAMIC_LINK") == 0) | |
5120 | { | |
5121 | /* If this is a dynamic link, we should have created | |
5122 | a _DYNAMIC_LINK symbol in | |
5123 | mips_elf_create_dynamic_sections. Otherwise, we | |
5124 | should define the symbol with a value of 0. | |
5125 | FIXME: It should probably get into the symbol | |
5126 | table somehow as well. */ | |
5127 | BFD_ASSERT (! info->shared); | |
5128 | BFD_ASSERT (bfd_get_section_by_name (output_bfd, | |
5129 | ".dynamic") == NULL); | |
5130 | relocation = 0; | |
5131 | } | |
5132 | else | |
5133 | { | |
5134 | if (! ((*info->callbacks->undefined_symbol) | |
5135 | (info, h->root.root.string, input_bfd, | |
5136 | input_section, rel->r_offset))) | |
5137 | return false; | |
5138 | undefined_error = true; | |
5139 | relocation = 0; | |
5140 | } | |
5141 | } | |
5142 | ||
5143 | mh = (struct mips_elf_link_hash_entry *) h; | |
5144 | if (h != NULL) | |
5145 | other = h->other; | |
5146 | else if (sym != NULL) | |
5147 | other = sym->st_other; | |
5148 | else | |
5149 | other = 0; | |
5150 | ||
5151 | /* If this function has an fn_stub, then it is a mips16 | |
5152 | function which needs a stub if it is called by a 32 bit | |
5153 | function. If this reloc is anything other than a 16 bit | |
5154 | call, redirect the reloc to the stub. We don't redirect | |
5155 | relocs from other stub functions. */ | |
5156 | if (r_type != R_MIPS16_26 | |
5157 | && ((mh != NULL | |
5158 | && mh->fn_stub != NULL) | |
5159 | || (mh == NULL | |
5160 | && elf_tdata (input_bfd)->local_stubs != NULL | |
5161 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
5162 | && strncmp (bfd_get_section_name (input_bfd, input_section), | |
5163 | FN_STUB, sizeof FN_STUB - 1) != 0 | |
5164 | && strncmp (bfd_get_section_name (input_bfd, input_section), | |
5165 | CALL_STUB, sizeof CALL_STUB - 1) != 0 | |
5166 | && strncmp (bfd_get_section_name (input_bfd, input_section), | |
5167 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) != 0) | |
5168 | { | |
5169 | if (mh != NULL) | |
5170 | { | |
5171 | BFD_ASSERT (mh->need_fn_stub); | |
5172 | relocation = (mh->fn_stub->output_section->vma | |
5173 | + mh->fn_stub->output_offset); | |
5174 | } | |
5175 | else | |
5176 | { | |
5177 | asection *fn_stub; | |
5178 | ||
5179 | fn_stub = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
5180 | relocation = (fn_stub->output_section->vma | |
5181 | + fn_stub->output_offset); | |
5182 | } | |
5183 | ||
5184 | /* RELOCATION now points to 32 bit code. */ | |
5185 | other = 0; | |
5186 | } | |
5187 | ||
5188 | /* If this function has a call_stub, then it is called by a | |
5189 | mips16 function; the call needs to go through a stub if | |
5190 | this function is a 32 bit function. If this reloc is a | |
5191 | 16 bit call, and the symbol is not a 16 bit function, | |
5192 | then redirect the reloc to the stub. Note that we don't | |
5193 | need to worry about calling the function through a | |
5194 | function pointer; such calls are handled by routing | |
5195 | through a special mips16 routine. We don't have to check | |
5196 | whether this call is from a stub; it can't be, because a | |
5197 | stub contains 32 bit code, and hence can not have a 16 | |
5198 | bit reloc. */ | |
5199 | if (r_type == R_MIPS16_26 | |
5200 | && mh != NULL | |
5201 | && (mh->call_stub != NULL || mh->call_fp_stub != NULL) | |
5202 | && other != STO_MIPS16) | |
5203 | { | |
5204 | asection *stub; | |
5205 | ||
5206 | /* If both call_stub and call_fp_stub are defined, we | |
5207 | can figure out which one to use by seeing which one | |
5208 | appears in the input file. */ | |
5209 | if (mh->call_stub != NULL && mh->call_fp_stub != NULL) | |
5210 | { | |
5211 | asection *o; | |
5212 | ||
5213 | stub = NULL; | |
5214 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
5215 | { | |
5216 | if (strncmp (bfd_get_section_name (input_bfd, o), | |
5217 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
5218 | { | |
5219 | stub = mh->call_fp_stub; | |
5220 | break; | |
5221 | } | |
5222 | } | |
5223 | if (stub == NULL) | |
5224 | stub = mh->call_stub; | |
5225 | } | |
5226 | else if (mh->call_stub != NULL) | |
5227 | stub = mh->call_stub; | |
5228 | else | |
5229 | stub = mh->call_fp_stub; | |
5230 | ||
5231 | BFD_ASSERT (stub->_raw_size > 0); | |
5232 | relocation = stub->output_section->vma + stub->output_offset; | |
5233 | } | |
5234 | ||
5235 | if (r_type == R_MIPS_HI16) | |
5236 | { | |
5237 | Elf_Internal_Rela *lorel; | |
5238 | ||
5239 | /* As a GNU extension, permit an arbitrary number of | |
5240 | R_MIPS_HI16 relocs before the R_MIPS_LO16 reloc. | |
5241 | This permits gcc to emit the HI and LO relocs itself. */ | |
5242 | for (lorel = rel + 1; | |
5243 | (lorel < relend | |
5244 | && ELF32_R_TYPE (lorel->r_info) == R_MIPS_HI16); | |
5245 | lorel++) | |
5246 | ; | |
5247 | if (lorel < relend | |
5248 | && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) | |
5249 | { | |
5250 | mips_elf_relocate_hi16 (input_bfd, rel, lorel, | |
5251 | contents, relocation + addend); | |
5252 | r = bfd_reloc_ok; | |
5253 | } | |
5254 | else | |
5255 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5256 | contents, rel->r_offset, | |
5257 | relocation, addend); | |
5258 | } | |
5259 | else if (r_type == R_MIPS_GOT16 && local) | |
5260 | { | |
5261 | /* GOT16 must also have an associated LO16 in the local | |
5262 | case. In this case, the addend is extracted and the | |
5263 | section in which the referenced object is determined. | |
5264 | Then the final address of the object is computed and | |
5265 | the GOT entry for the hipage (an aligned 64kb chunk) | |
5266 | is added to .got section if needed. The offset field | |
5267 | of the GOT16-relocated instruction is replaced by the | |
5268 | index of this GOT entry for the hipage. */ | |
5269 | if ((rel + 1) < relend | |
5270 | && ELF32_R_TYPE ((rel + 1)->r_info) == R_MIPS_LO16) | |
5271 | { | |
5272 | if (! mips_elf_relocate_got_local (output_bfd, input_bfd, | |
5273 | sgot, rel, rel + 1, | |
5274 | contents, | |
5275 | relocation + addend)) | |
5276 | return false; | |
5277 | r = bfd_reloc_ok; | |
5278 | } | |
5279 | else | |
5280 | r = bfd_reloc_outofrange; | |
5281 | } | |
5282 | else if (r_type == R_MIPS_CALL16 | |
5283 | || r_type == R_MIPS_GOT16 | |
5284 | || r_type == R_MIPS_CALL_LO16 | |
5285 | || r_type == R_MIPS_GOT_LO16) | |
5286 | { | |
5287 | bfd_vma offset; | |
5288 | ||
5289 | /* This symbol must be registered as a global symbol | |
5290 | having the corresponding got entry. */ | |
5291 | BFD_ASSERT (h->got.offset != (bfd_vma) -1); | |
5292 | ||
5293 | offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; | |
5294 | BFD_ASSERT (g->local_gotno <= offset | |
5295 | && offset < sgot->_raw_size); | |
5296 | bfd_put_32 (output_bfd, relocation + addend, | |
5297 | sgot->contents + offset); | |
5298 | offset = (sgot->output_section->vma + sgot->output_offset | |
5299 | + offset - gp); | |
5300 | mips_elf_relocate_global_got (input_bfd, rel, contents, | |
5301 | offset); | |
5302 | r = bfd_reloc_ok; | |
5303 | } | |
5304 | else if (r_type == R_MIPS_CALL_HI16 | |
5305 | || r_type == R_MIPS_GOT_HI16) | |
5306 | { | |
5307 | bfd_vma offset; | |
5308 | ||
5309 | /* This must be a global symbol with a got entry. The | |
5310 | next reloc must be the corresponding LO16 reloc. */ | |
5311 | BFD_ASSERT (h != NULL && h->got.offset != (bfd_vma) -1); | |
5312 | BFD_ASSERT ((rel + 1) < relend); | |
5313 | BFD_ASSERT ((int) ELF32_R_TYPE ((rel + 1)->r_info) | |
5314 | == (r_type == R_MIPS_CALL_HI16 | |
5315 | ? (int) R_MIPS_CALL_LO16 | |
5316 | : (int) R_MIPS_GOT_LO16)); | |
5317 | ||
5318 | offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; | |
5319 | BFD_ASSERT (g->local_gotno <= offset | |
5320 | && offset < sgot->_raw_size); | |
5321 | bfd_put_32 (output_bfd, relocation + addend, | |
5322 | sgot->contents + offset); | |
5323 | offset = (sgot->output_section->vma + sgot->output_offset | |
5324 | + offset - gp); | |
5325 | mips_elf_relocate_hi16 (input_bfd, rel, rel + 1, contents, | |
5326 | offset); | |
5327 | r = bfd_reloc_ok; | |
5328 | } | |
5329 | else if (r_type == R_MIPS_REL32 | |
5330 | || r_type == R_MIPS_32) | |
5331 | { | |
5332 | Elf_Internal_Rel outrel; | |
5333 | Elf32_crinfo cptrel; | |
5334 | bfd_byte *cr; | |
5335 | ||
5336 | if ((info->shared | |
5337 | || (elf_hash_table (info)->dynamic_sections_created | |
5338 | && h != NULL | |
5339 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
5340 | == 0))) | |
5341 | && (input_section->flags & SEC_ALLOC) != 0) | |
5342 | { | |
5343 | boolean skip; | |
5344 | ||
5345 | /* When generating a shared object, these | |
5346 | relocations are copied into the output file to be | |
5347 | resolved at run time. */ | |
5348 | if (sreloc == NULL) | |
5349 | { | |
5350 | sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
5351 | BFD_ASSERT (sreloc != NULL); | |
5352 | } | |
5353 | ||
5354 | skip = false; | |
5355 | ||
5356 | if (elf_section_data (input_section)->stab_info == NULL) | |
5357 | outrel.r_offset = rel->r_offset; | |
5358 | else | |
5359 | { | |
5360 | bfd_vma off; | |
5361 | ||
5362 | off = (_bfd_stab_section_offset | |
5363 | (output_bfd, &elf_hash_table (info)->stab_info, | |
5364 | input_section, | |
5365 | &elf_section_data (input_section)->stab_info, | |
5366 | rel->r_offset)); | |
5367 | if (off == (bfd_vma) -1) | |
5368 | skip = true; | |
5369 | outrel.r_offset = off; | |
5370 | } | |
5371 | ||
5372 | outrel.r_offset += (input_section->output_section->vma | |
5373 | + input_section->output_offset); | |
5374 | ||
5375 | addend = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
5376 | ||
5377 | if (skip) | |
5378 | memset (&outrel, 0, sizeof outrel); | |
5379 | else if (h != NULL | |
5380 | && (! info->symbolic | |
5381 | || (h->elf_link_hash_flags | |
5382 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
5383 | { | |
5384 | BFD_ASSERT (h->dynindx != -1); | |
5385 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_REL32); | |
5386 | sec = input_section; | |
5387 | } | |
5388 | else | |
5389 | { | |
5390 | long indx; | |
5391 | ||
5392 | if (h == NULL) | |
5393 | sec = local_sections[r_symndx]; | |
5394 | else | |
5395 | { | |
5396 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
5397 | || (h->root.type | |
5398 | == bfd_link_hash_defweak)); | |
5399 | sec = h->root.u.def.section; | |
5400 | } | |
5401 | if (sec != NULL && bfd_is_abs_section (sec)) | |
5402 | indx = 0; | |
5403 | else if (sec == NULL || sec->owner == NULL) | |
5404 | { | |
5405 | bfd_set_error (bfd_error_bad_value); | |
5406 | return false; | |
5407 | } | |
5408 | else | |
5409 | { | |
5410 | asection *osec; | |
5411 | ||
5412 | osec = sec->output_section; | |
5413 | indx = elf_section_data (osec)->dynindx; | |
5414 | if (indx == 0) | |
5415 | abort (); | |
5416 | } | |
5417 | ||
5418 | outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32); | |
5419 | addend += relocation; | |
5420 | } | |
5421 | ||
5422 | if (! skip) | |
5423 | bfd_put_32 (output_bfd, addend, contents + rel->r_offset); | |
5424 | ||
5425 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
5426 | (((Elf32_External_Rel *) | |
5427 | sreloc->contents) | |
5428 | + sreloc->reloc_count)); | |
5429 | ++sreloc->reloc_count; | |
5430 | ||
5431 | if (! skip && SGI_COMPAT (output_bfd)) | |
5432 | { | |
5433 | if (scpt == NULL) | |
5434 | continue; | |
5435 | ||
5436 | /* Make an entry of compact relocation info. */ | |
5437 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5438 | cptrel.vaddr = (rel->r_offset | |
5439 | + input_section->output_section->vma | |
5440 | + input_section->output_offset); | |
5441 | if (r_type == R_MIPS_REL32) | |
5442 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
5443 | else | |
5444 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
5445 | mips_elf_set_cr_dist2to (cptrel, 0); | |
5446 | cptrel.konst = addend; | |
5447 | ||
5448 | cr = (scpt->contents | |
5449 | + sizeof (Elf32_External_compact_rel)); | |
5450 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
5451 | ((Elf32_External_crinfo *) cr | |
5452 | + scpt->reloc_count)); | |
5453 | ++scpt->reloc_count; | |
5454 | } | |
5455 | ||
5456 | /* This reloc will be computed at runtime, so | |
5457 | there's no need to do anything now. */ | |
5458 | continue; | |
5459 | } | |
5460 | else | |
5461 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5462 | contents, rel->r_offset, | |
5463 | relocation, addend); | |
5464 | } | |
5465 | else if (r_type == R_MIPS_64) | |
5466 | { | |
5467 | bfd_size_type addr; | |
5468 | unsigned long val; | |
5469 | ||
5470 | /* Do a 32 bit relocation, and sign extend to 64 bits. */ | |
5471 | addr = rel->r_offset; | |
5472 | if (bfd_big_endian (input_bfd)) | |
5473 | addr += 4; | |
5474 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5475 | contents, addr, relocation, | |
5476 | addend); | |
5477 | val = bfd_get_32 (input_bfd, contents + addr); | |
5478 | if ((val & 0x80000000) != 0) | |
5479 | val = 0xffffffff; | |
5480 | else | |
5481 | val = 0; | |
5482 | addr = rel->r_offset; | |
5483 | if (bfd_little_endian (input_bfd)) | |
5484 | addr += 4; | |
5485 | bfd_put_32 (input_bfd, val, contents + addr); | |
5486 | } | |
5487 | else if (r_type == R_MIPS_26 && other == STO_MIPS16) | |
5488 | { | |
5489 | unsigned long insn; | |
5490 | ||
5491 | /* This is a jump to a mips16 routine from a mips32 | |
5492 | routine. We need to change jal into jalx. */ | |
5493 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
5494 | if (((insn >> 26) & 0x3f) != 0x3 | |
5495 | && ((insn >> 26) & 0x3f) != 0x1d) | |
5496 | { | |
5497 | (*_bfd_error_handler) | |
5498 | (_("%s: %s+0x%lx: jump to mips16 routine which is not jal"), | |
5499 | bfd_get_filename (input_bfd), | |
5500 | input_section->name, | |
5501 | (unsigned long) rel->r_offset); | |
5502 | bfd_set_error (bfd_error_bad_value); | |
5503 | return false; | |
5504 | } | |
5505 | insn = (insn & 0x3ffffff) | (0x1d << 26); | |
5506 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
5507 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5508 | contents, rel->r_offset, | |
5509 | relocation, addend); | |
5510 | } | |
5511 | else if (r_type == R_MIPS16_26) | |
5512 | { | |
5513 | /* It's easiest to do the normal relocation, and then | |
5514 | dig out the instruction and swap the first word the | |
5515 | way the mips16 expects it. If this is little endian, | |
5516 | though, we need to swap the two words first, and then | |
5517 | swap them back again later, so that the address looks | |
5518 | right. */ | |
5519 | ||
5520 | if (bfd_little_endian (input_bfd)) | |
5521 | { | |
5522 | unsigned long insn; | |
5523 | ||
5524 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
5525 | insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16); | |
5526 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
5527 | } | |
5528 | ||
5529 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5530 | contents, rel->r_offset, | |
5531 | relocation, addend); | |
5532 | if (r == bfd_reloc_ok) | |
5533 | { | |
5534 | unsigned long insn; | |
5535 | ||
5536 | if (bfd_little_endian (input_bfd)) | |
5537 | { | |
5538 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
5539 | insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16); | |
5540 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
5541 | } | |
5542 | ||
5543 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset); | |
5544 | insn = ((insn & 0xfc00) | |
5545 | | ((insn & 0x1f) << 5) | |
5546 | | ((insn & 0x3e0) >> 5)); | |
5547 | /* If this is a jump to a 32 bit routine, then make | |
5548 | it jalx. */ | |
5549 | if (other != STO_MIPS16) | |
5550 | insn |= 0x400; | |
5551 | bfd_put_16 (input_bfd, insn, contents + rel->r_offset); | |
5552 | } | |
5553 | } | |
5554 | else if (r_type == R_MIPS16_GPREL) | |
5555 | { | |
5556 | unsigned short extend, insn; | |
5557 | bfd_byte buf[4]; | |
5558 | unsigned long final; | |
5559 | ||
5560 | /* Extract the addend into buf, run the regular reloc, | |
5561 | and stuff the resulting value back into the | |
5562 | instructions. */ | |
5563 | if (rel->r_offset > input_section->_raw_size) | |
5564 | r = bfd_reloc_outofrange; | |
5565 | else | |
5566 | { | |
5567 | extend = bfd_get_16 (input_bfd, contents + rel->r_offset); | |
5568 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset + 2); | |
5569 | bfd_put_32 (input_bfd, | |
5570 | (((extend & 0x1f) << 11) | |
5571 | | (extend & 0x7e0) | |
5572 | | (insn & 0x1f)), | |
5573 | buf); | |
5574 | r = _bfd_final_link_relocate (howto, input_bfd, | |
5575 | input_section, buf, | |
5576 | (bfd_vma) 0, relocation, | |
5577 | addend); | |
5578 | final = bfd_get_32 (input_bfd, buf); | |
5579 | bfd_put_16 (input_bfd, | |
5580 | ((extend & 0xf800) | |
5581 | | ((final >> 11) & 0x1f) | |
5582 | | (final & 0x7e0)), | |
5583 | contents + rel->r_offset); | |
5584 | bfd_put_16 (input_bfd, | |
5585 | ((insn & 0xffe0) | |
5586 | | (final & 0x1f)), | |
5587 | contents + rel->r_offset + 2); | |
5588 | } | |
5589 | } | |
5590 | else | |
5591 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5592 | contents, rel->r_offset, | |
5593 | relocation, addend); | |
5594 | ||
5595 | /* The jal instruction can only jump to an address which is | |
5596 | divisible by 4, and it can only jump to an address with | |
5597 | the same upper 4 bits as the PC. */ | |
5598 | if (r == bfd_reloc_ok | |
5599 | && (r_type == R_MIPS16_26 || r_type == R_MIPS_26)) | |
5600 | { | |
5601 | bfd_vma addr; | |
5602 | bfd_vma pc; | |
5603 | bfd_vma target; | |
5604 | ||
5605 | pc = ((input_section->output_section->vma | |
5606 | + input_section->output_offset | |
5607 | + rel->r_offset) | |
5608 | & 0xf0000000); | |
5609 | target = bfd_get_32 (input_bfd, contents + rel->r_offset) | |
5610 | & (howto->dst_mask); | |
5611 | addr = (target << 2) + pc; | |
5612 | if (other == STO_MIPS16) | |
5613 | addr &= ~ (bfd_vma) 1; | |
5614 | if ((addr & 3) != 0 | |
5615 | || ((addr & 0xf0000000) | |
5616 | != pc)) | |
5617 | r = bfd_reloc_overflow; | |
5618 | } | |
5619 | ||
5620 | /* Don't bother to report a relocation overflow for a call | |
5621 | to a weak undefined symbol with a value of zero. This | |
5622 | permits us to use | |
5623 | if (!f) f(); | |
5624 | even if we aren't in range to call address zero. */ | |
5625 | if (r == bfd_reloc_overflow | |
5626 | && (r_type == R_MIPS16_26 || r_type == R_MIPS_26) | |
5627 | && relocation + addend == 0 | |
5628 | && h != NULL | |
5629 | && h->root.type == bfd_link_hash_undefweak) | |
5630 | r = bfd_reloc_ok; | |
5631 | ||
5632 | /* If we've already issued an error for an undefined symbol, | |
5633 | don't issue another useless error. */ | |
5634 | if (undefined_error | |
5635 | && (r == bfd_reloc_undefined || r == bfd_reloc_overflow)) | |
5636 | r = bfd_reloc_ok; | |
5637 | ||
5638 | if (SGI_COMPAT (abfd) | |
5639 | && scpt != NULL | |
5640 | && (input_section->flags & SEC_ALLOC) != 0) | |
5641 | { | |
5642 | Elf32_crinfo cptrel; | |
5643 | bfd_byte *cr; | |
5644 | ||
5645 | /* Make an entry of compact relocation info. */ | |
5646 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5647 | cptrel.vaddr = (rel->r_offset | |
5648 | + input_section->output_section->vma | |
5649 | + input_section->output_offset); | |
5650 | ||
5651 | switch (r_type) | |
5652 | { | |
5653 | case R_MIPS_26: | |
5654 | mips_elf_set_cr_type (cptrel, CRT_MIPS_JMPAD); | |
5655 | /* XXX How should we set dist2to in this case. */ | |
5656 | mips_elf_set_cr_dist2to (cptrel, 8); | |
5657 | cptrel.konst = addend + relocation; | |
5658 | cr = scpt->contents + sizeof (Elf32_External_compact_rel); | |
5659 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
5660 | ((Elf32_External_crinfo *) cr | |
5661 | + scpt->reloc_count)); | |
5662 | ++scpt->reloc_count; | |
5663 | break; | |
5664 | ||
5665 | case R_MIPS_GPREL16: | |
5666 | case R_MIPS_LITERAL: | |
5667 | case R_MIPS_GPREL32: | |
5668 | mips_elf_set_cr_type (cptrel, CRT_MIPS_GPHI_LO); | |
5669 | cptrel.konst = gp - cptrel.vaddr; | |
5670 | mips_elf_set_cr_dist2to (cptrel, 4); | |
5671 | cr = scpt->contents + sizeof (Elf32_External_compact_rel); | |
5672 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
5673 | ((Elf32_External_crinfo *) cr | |
5674 | + scpt->reloc_count)); | |
5675 | ++scpt->reloc_count; | |
5676 | break; | |
5677 | ||
5678 | default: | |
5679 | break; | |
5680 | } | |
5681 | } | |
5682 | } | |
5683 | ||
5684 | if (r != bfd_reloc_ok) | |
5685 | { | |
5686 | switch (r) | |
5687 | { | |
5688 | default: | |
5689 | case bfd_reloc_outofrange: | |
5690 | abort (); | |
5691 | case bfd_reloc_overflow: | |
5692 | { | |
5693 | const char *name; | |
5694 | ||
5695 | if (h != NULL) | |
5696 | name = h->root.root.string; | |
5697 | else | |
5698 | { | |
5699 | name = bfd_elf_string_from_elf_section (input_bfd, | |
5700 | symtab_hdr->sh_link, | |
5701 | sym->st_name); | |
5702 | if (name == NULL) | |
5703 | return false; | |
5704 | if (*name == '\0') | |
5705 | name = bfd_section_name (input_bfd, sec); | |
5706 | } | |
5707 | if (! ((*info->callbacks->reloc_overflow) | |
5708 | (info, name, howto->name, (bfd_vma) 0, | |
5709 | input_bfd, input_section, rel->r_offset))) | |
5710 | return false; | |
5711 | } | |
5712 | break; | |
5713 | } | |
5714 | } | |
5715 | } | |
5716 | ||
5717 | return true; | |
5718 | } | |
5719 | ||
5720 | /* This hook function is called before the linker writes out a global | |
5721 | symbol. We mark symbols as small common if appropriate. This is | |
5722 | also where we undo the increment of the value for a mips16 symbol. */ | |
5723 | ||
5724 | /*ARGSIGNORED*/ | |
5725 | static boolean | |
5726 | mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
5727 | bfd *abfd; | |
5728 | struct bfd_link_info *info; | |
5729 | const char *name; | |
5730 | Elf_Internal_Sym *sym; | |
5731 | asection *input_sec; | |
5732 | { | |
5733 | /* If we see a common symbol, which implies a relocatable link, then | |
5734 | if a symbol was small common in an input file, mark it as small | |
5735 | common in the output file. */ | |
5736 | if (sym->st_shndx == SHN_COMMON | |
5737 | && strcmp (input_sec->name, ".scommon") == 0) | |
5738 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
5739 | ||
5740 | if (sym->st_other == STO_MIPS16 | |
5741 | && (sym->st_value & 1) != 0) | |
5742 | --sym->st_value; | |
5743 | ||
5744 | return true; | |
5745 | } | |
5746 | \f | |
5747 | /* Functions for the dynamic linker. */ | |
5748 | ||
5749 | /* The name of the dynamic interpreter. This is put in the .interp | |
5750 | section. */ | |
5751 | ||
5752 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
5753 | ||
5754 | /* Create dynamic sections when linking against a dynamic object. */ | |
5755 | ||
5756 | static boolean | |
5757 | mips_elf_create_dynamic_sections (abfd, info) | |
5758 | bfd *abfd; | |
5759 | struct bfd_link_info *info; | |
5760 | { | |
5761 | struct elf_link_hash_entry *h; | |
5762 | flagword flags; | |
5763 | register asection *s; | |
5764 | const char * const *namep; | |
5765 | ||
5766 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5767 | | SEC_LINKER_CREATED | SEC_READONLY); | |
5768 | ||
5769 | /* Mips ABI requests the .dynamic section to be read only. */ | |
5770 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
5771 | if (s != NULL) | |
5772 | { | |
5773 | if (! bfd_set_section_flags (abfd, s, flags)) | |
5774 | return false; | |
5775 | } | |
5776 | ||
5777 | /* We need to create .got section. */ | |
5778 | if (! mips_elf_create_got_section (abfd, info)) | |
5779 | return false; | |
5780 | ||
5781 | /* Create .stub section. */ | |
5782 | if (bfd_get_section_by_name (abfd, ".stub") == NULL) | |
5783 | { | |
5784 | s = bfd_make_section (abfd, ".stub"); | |
5785 | if (s == NULL | |
5786 | || ! bfd_set_section_flags (abfd, s, flags) | |
5787 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
5788 | return false; | |
5789 | } | |
5790 | ||
5791 | if (SGI_COMPAT (abfd) | |
5792 | && !info->shared | |
5793 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
5794 | { | |
5795 | s = bfd_make_section (abfd, ".rld_map"); | |
5796 | if (s == NULL | |
5797 | || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY) | |
5798 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
5799 | return false; | |
5800 | } | |
5801 | ||
5802 | if (SGI_COMPAT (abfd)) | |
5803 | { | |
5804 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
5805 | { | |
5806 | h = NULL; | |
5807 | if (! (_bfd_generic_link_add_one_symbol | |
5808 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, | |
5809 | (bfd_vma) 0, (const char *) NULL, false, | |
5810 | get_elf_backend_data (abfd)->collect, | |
5811 | (struct bfd_link_hash_entry **) &h))) | |
5812 | return false; | |
5813 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
5814 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5815 | h->type = STT_SECTION; | |
5816 | ||
5817 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5818 | return false; | |
5819 | } | |
5820 | ||
5821 | /* We need to create a .compact_rel section. */ | |
5822 | if (! mips_elf_create_compact_rel_section (abfd, info)) | |
5823 | return false; | |
5824 | ||
5825 | /* Change aligments of some sections. */ | |
5826 | s = bfd_get_section_by_name (abfd, ".hash"); | |
5827 | if (s != NULL) | |
5828 | bfd_set_section_alignment (abfd, s, 4); | |
5829 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
5830 | if (s != NULL) | |
5831 | bfd_set_section_alignment (abfd, s, 4); | |
5832 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
5833 | if (s != NULL) | |
5834 | bfd_set_section_alignment (abfd, s, 4); | |
5835 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
5836 | if (s != NULL) | |
5837 | bfd_set_section_alignment (abfd, s, 4); | |
5838 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
5839 | if (s != NULL) | |
5840 | bfd_set_section_alignment (abfd, s, 4); | |
5841 | } | |
5842 | ||
5843 | if (!info->shared) | |
5844 | { | |
5845 | h = NULL; | |
5846 | if (! (_bfd_generic_link_add_one_symbol | |
5847 | (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr, | |
5848 | (bfd_vma) 0, (const char *) NULL, false, | |
5849 | get_elf_backend_data (abfd)->collect, | |
5850 | (struct bfd_link_hash_entry **) &h))) | |
5851 | return false; | |
5852 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
5853 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5854 | h->type = STT_SECTION; | |
5855 | ||
5856 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5857 | return false; | |
5858 | ||
5859 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
5860 | { | |
5861 | /* __rld_map is a four byte word located in the .data section | |
5862 | and is filled in by the rtld to contain a pointer to | |
5863 | the _r_debug structure. Its symbol value will be set in | |
5864 | mips_elf_finish_dynamic_symbol. */ | |
5865 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
5866 | BFD_ASSERT (s != NULL); | |
5867 | ||
5868 | h = NULL; | |
5869 | if (! (_bfd_generic_link_add_one_symbol | |
5870 | (info, abfd, "__rld_map", BSF_GLOBAL, s, | |
5871 | (bfd_vma) 0, (const char *) NULL, false, | |
5872 | get_elf_backend_data (abfd)->collect, | |
5873 | (struct bfd_link_hash_entry **) &h))) | |
5874 | return false; | |
5875 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
5876 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5877 | h->type = STT_OBJECT; | |
5878 | ||
5879 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5880 | return false; | |
5881 | } | |
5882 | } | |
5883 | ||
5884 | return true; | |
5885 | } | |
5886 | ||
5887 | /* Create the .compact_rel section. */ | |
5888 | ||
5889 | static boolean | |
5890 | mips_elf_create_compact_rel_section (abfd, info) | |
5891 | bfd *abfd; | |
5892 | struct bfd_link_info *info; | |
5893 | { | |
5894 | flagword flags; | |
5895 | register asection *s; | |
5896 | ||
5897 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
5898 | { | |
5899 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
5900 | | SEC_READONLY); | |
5901 | ||
5902 | s = bfd_make_section (abfd, ".compact_rel"); | |
5903 | if (s == NULL | |
5904 | || ! bfd_set_section_flags (abfd, s, flags) | |
5905 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
5906 | return false; | |
5907 | ||
5908 | s->_raw_size = sizeof (Elf32_External_compact_rel); | |
5909 | } | |
5910 | ||
5911 | return true; | |
5912 | } | |
5913 | ||
5914 | /* Create the .got section to hold the global offset table. */ | |
5915 | ||
5916 | static boolean | |
5917 | mips_elf_create_got_section (abfd, info) | |
5918 | bfd *abfd; | |
5919 | struct bfd_link_info *info; | |
5920 | { | |
5921 | flagword flags; | |
5922 | register asection *s; | |
5923 | struct elf_link_hash_entry *h; | |
5924 | struct mips_got_info *g; | |
5925 | ||
5926 | /* This function may be called more than once. */ | |
5927 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
5928 | return true; | |
5929 | ||
5930 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5931 | | SEC_LINKER_CREATED); | |
5932 | ||
5933 | s = bfd_make_section (abfd, ".got"); | |
5934 | if (s == NULL | |
5935 | || ! bfd_set_section_flags (abfd, s, flags) | |
5936 | || ! bfd_set_section_alignment (abfd, s, 4)) | |
5937 | return false; | |
5938 | ||
5939 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
5940 | linker script because we don't want to define the symbol if we | |
5941 | are not creating a global offset table. */ | |
5942 | h = NULL; | |
5943 | if (! (_bfd_generic_link_add_one_symbol | |
5944 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
5945 | (bfd_vma) 0, (const char *) NULL, false, | |
5946 | get_elf_backend_data (abfd)->collect, | |
5947 | (struct bfd_link_hash_entry **) &h))) | |
5948 | return false; | |
5949 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
5950 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5951 | h->type = STT_OBJECT; | |
5952 | ||
5953 | if (info->shared | |
5954 | && ! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5955 | return false; | |
5956 | ||
5957 | /* The first several global offset table entries are reserved. */ | |
5958 | s->_raw_size = MIPS_RESERVED_GOTNO * 4; | |
5959 | ||
5960 | g = (struct mips_got_info *) bfd_alloc (abfd, | |
5961 | sizeof (struct mips_got_info)); | |
5962 | if (g == NULL) | |
5963 | return false; | |
5964 | g->global_gotsym = 0; | |
5965 | g->local_gotno = MIPS_RESERVED_GOTNO; | |
5966 | g->assigned_gotno = MIPS_RESERVED_GOTNO; | |
5967 | if (elf_section_data (s) == NULL) | |
5968 | { | |
5969 | s->used_by_bfd = | |
5970 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
5971 | if (elf_section_data (s) == NULL) | |
5972 | return false; | |
5973 | } | |
5974 | elf_section_data (s)->tdata = (PTR) g; | |
5975 | ||
5976 | return true; | |
5977 | } | |
5978 | ||
5979 | /* Look through the relocs for a section during the first phase, and | |
5980 | allocate space in the global offset table. */ | |
5981 | ||
5982 | static boolean | |
5983 | mips_elf_check_relocs (abfd, info, sec, relocs) | |
5984 | bfd *abfd; | |
5985 | struct bfd_link_info *info; | |
5986 | asection *sec; | |
5987 | const Elf_Internal_Rela *relocs; | |
5988 | { | |
5989 | const char *name; | |
5990 | bfd *dynobj; | |
5991 | Elf_Internal_Shdr *symtab_hdr; | |
5992 | struct elf_link_hash_entry **sym_hashes; | |
5993 | struct mips_got_info *g; | |
5994 | size_t extsymoff; | |
5995 | const Elf_Internal_Rela *rel; | |
5996 | const Elf_Internal_Rela *rel_end; | |
5997 | asection *sgot; | |
5998 | asection *sreloc; | |
5999 | ||
6000 | if (info->relocateable) | |
6001 | return true; | |
6002 | ||
6003 | dynobj = elf_hash_table (info)->dynobj; | |
6004 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6005 | sym_hashes = elf_sym_hashes (abfd); | |
6006 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
6007 | ||
6008 | /* Check for the mips16 stub sections. */ | |
6009 | ||
6010 | name = bfd_get_section_name (abfd, sec); | |
6011 | if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) | |
6012 | { | |
6013 | unsigned long r_symndx; | |
6014 | ||
6015 | /* Look at the relocation information to figure out which symbol | |
6016 | this is for. */ | |
6017 | ||
6018 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
6019 | ||
6020 | if (r_symndx < extsymoff | |
6021 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
6022 | { | |
6023 | asection *o; | |
6024 | ||
6025 | /* This stub is for a local symbol. This stub will only be | |
6026 | needed if there is some relocation in this BFD, other | |
6027 | than a 16 bit function call, which refers to this symbol. */ | |
6028 | for (o = abfd->sections; o != NULL; o = o->next) | |
6029 | { | |
6030 | Elf_Internal_Rela *sec_relocs; | |
6031 | const Elf_Internal_Rela *r, *rend; | |
6032 | ||
6033 | /* We can ignore stub sections when looking for relocs. */ | |
6034 | if ((o->flags & SEC_RELOC) == 0 | |
6035 | || o->reloc_count == 0 | |
6036 | || strncmp (bfd_get_section_name (abfd, o), FN_STUB, | |
6037 | sizeof FN_STUB - 1) == 0 | |
6038 | || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, | |
6039 | sizeof CALL_STUB - 1) == 0 | |
6040 | || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, | |
6041 | sizeof CALL_FP_STUB - 1) == 0) | |
6042 | continue; | |
6043 | ||
6044 | sec_relocs = (_bfd_elf32_link_read_relocs | |
6045 | (abfd, o, (PTR) NULL, | |
6046 | (Elf_Internal_Rela *) NULL, | |
6047 | info->keep_memory)); | |
6048 | if (sec_relocs == NULL) | |
6049 | return false; | |
6050 | ||
6051 | rend = sec_relocs + o->reloc_count; | |
6052 | for (r = sec_relocs; r < rend; r++) | |
6053 | if (ELF32_R_SYM (r->r_info) == r_symndx | |
6054 | && ELF32_R_TYPE (r->r_info) != R_MIPS16_26) | |
6055 | break; | |
6056 | ||
6057 | if (! info->keep_memory) | |
6058 | free (sec_relocs); | |
6059 | ||
6060 | if (r < rend) | |
6061 | break; | |
6062 | } | |
6063 | ||
6064 | if (o == NULL) | |
6065 | { | |
6066 | /* There is no non-call reloc for this stub, so we do | |
6067 | not need it. Since this function is called before | |
6068 | the linker maps input sections to output sections, we | |
6069 | can easily discard it by setting the SEC_EXCLUDE | |
6070 | flag. */ | |
6071 | sec->flags |= SEC_EXCLUDE; | |
6072 | return true; | |
6073 | } | |
6074 | ||
6075 | /* Record this stub in an array of local symbol stubs for | |
6076 | this BFD. */ | |
6077 | if (elf_tdata (abfd)->local_stubs == NULL) | |
6078 | { | |
6079 | unsigned long symcount; | |
6080 | asection **n; | |
6081 | ||
6082 | if (elf_bad_symtab (abfd)) | |
6083 | symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
6084 | else | |
6085 | symcount = symtab_hdr->sh_info; | |
6086 | n = (asection **) bfd_zalloc (abfd, | |
6087 | symcount * sizeof (asection *)); | |
6088 | if (n == NULL) | |
6089 | return false; | |
6090 | elf_tdata (abfd)->local_stubs = n; | |
6091 | } | |
6092 | ||
6093 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; | |
6094 | ||
6095 | /* We don't need to set mips16_stubs_seen in this case. | |
6096 | That flag is used to see whether we need to look through | |
6097 | the global symbol table for stubs. We don't need to set | |
6098 | it here, because we just have a local stub. */ | |
6099 | } | |
6100 | else | |
6101 | { | |
6102 | struct mips_elf_link_hash_entry *h; | |
6103 | ||
6104 | h = ((struct mips_elf_link_hash_entry *) | |
6105 | sym_hashes[r_symndx - extsymoff]); | |
6106 | ||
6107 | /* H is the symbol this stub is for. */ | |
6108 | ||
6109 | h->fn_stub = sec; | |
6110 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
6111 | } | |
6112 | } | |
6113 | else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
6114 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
6115 | { | |
6116 | unsigned long r_symndx; | |
6117 | struct mips_elf_link_hash_entry *h; | |
6118 | asection **loc; | |
6119 | ||
6120 | /* Look at the relocation information to figure out which symbol | |
6121 | this is for. */ | |
6122 | ||
6123 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
6124 | ||
6125 | if (r_symndx < extsymoff | |
6126 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
6127 | { | |
6128 | /* This stub was actually built for a static symbol defined | |
6129 | in the same file. We assume that all static symbols in | |
6130 | mips16 code are themselves mips16, so we can simply | |
6131 | discard this stub. Since this function is called before | |
6132 | the linker maps input sections to output sections, we can | |
6133 | easily discard it by setting the SEC_EXCLUDE flag. */ | |
6134 | sec->flags |= SEC_EXCLUDE; | |
6135 | return true; | |
6136 | } | |
6137 | ||
6138 | h = ((struct mips_elf_link_hash_entry *) | |
6139 | sym_hashes[r_symndx - extsymoff]); | |
6140 | ||
6141 | /* H is the symbol this stub is for. */ | |
6142 | ||
6143 | if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
6144 | loc = &h->call_fp_stub; | |
6145 | else | |
6146 | loc = &h->call_stub; | |
6147 | ||
6148 | /* If we already have an appropriate stub for this function, we | |
6149 | don't need another one, so we can discard this one. Since | |
6150 | this function is called before the linker maps input sections | |
6151 | to output sections, we can easily discard it by setting the | |
6152 | SEC_EXCLUDE flag. We can also discard this section if we | |
6153 | happen to already know that this is a mips16 function; it is | |
6154 | not necessary to check this here, as it is checked later, but | |
6155 | it is slightly faster to check now. */ | |
6156 | if (*loc != NULL || h->root.other == STO_MIPS16) | |
6157 | { | |
6158 | sec->flags |= SEC_EXCLUDE; | |
6159 | return true; | |
6160 | } | |
6161 | ||
6162 | *loc = sec; | |
6163 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
6164 | } | |
6165 | ||
6166 | if (dynobj == NULL) | |
6167 | { | |
6168 | sgot = NULL; | |
6169 | g = NULL; | |
6170 | } | |
6171 | else | |
6172 | { | |
6173 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6174 | if (sgot == NULL) | |
6175 | g = NULL; | |
6176 | else | |
6177 | { | |
6178 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6179 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6180 | BFD_ASSERT (g != NULL); | |
6181 | } | |
6182 | } | |
6183 | ||
6184 | sreloc = NULL; | |
6185 | ||
6186 | rel_end = relocs + sec->reloc_count; | |
6187 | for (rel = relocs; rel < rel_end; rel++) | |
6188 | { | |
6189 | unsigned long r_symndx; | |
6190 | struct elf_link_hash_entry *h; | |
6191 | ||
6192 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6193 | ||
6194 | if (r_symndx < extsymoff) | |
6195 | h = NULL; | |
6196 | else | |
6197 | { | |
6198 | h = sym_hashes[r_symndx - extsymoff]; | |
6199 | ||
6200 | /* This may be an indirect symbol created because of a version. */ | |
6201 | if (h != NULL) | |
6202 | { | |
6203 | while (h->root.type == bfd_link_hash_indirect) | |
6204 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6205 | } | |
6206 | } | |
6207 | ||
6208 | /* Some relocs require a global offset table. */ | |
6209 | if (dynobj == NULL || sgot == NULL) | |
6210 | { | |
6211 | switch (ELF32_R_TYPE (rel->r_info)) | |
6212 | { | |
6213 | case R_MIPS_GOT16: | |
6214 | case R_MIPS_CALL16: | |
6215 | case R_MIPS_CALL_HI16: | |
6216 | case R_MIPS_CALL_LO16: | |
6217 | case R_MIPS_GOT_HI16: | |
6218 | case R_MIPS_GOT_LO16: | |
6219 | if (dynobj == NULL) | |
6220 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
6221 | if (! mips_elf_create_got_section (dynobj, info)) | |
6222 | return false; | |
6223 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6224 | BFD_ASSERT (sgot != NULL); | |
6225 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6226 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6227 | BFD_ASSERT (g != NULL); | |
6228 | break; | |
6229 | ||
6230 | case R_MIPS_32: | |
6231 | case R_MIPS_REL32: | |
6232 | if (dynobj == NULL | |
6233 | && (info->shared || h != NULL) | |
6234 | && (sec->flags & SEC_ALLOC) != 0) | |
6235 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
6236 | break; | |
6237 | ||
6238 | default: | |
6239 | break; | |
6240 | } | |
6241 | } | |
6242 | ||
6243 | switch (ELF32_R_TYPE (rel->r_info)) | |
6244 | { | |
6245 | case R_MIPS_CALL16: | |
6246 | case R_MIPS_CALL_HI16: | |
6247 | case R_MIPS_CALL_LO16: | |
6248 | /* This symbol requires a global offset table entry. */ | |
6249 | ||
6250 | if (h == NULL) | |
6251 | { | |
6252 | (*_bfd_error_handler) | |
6253 | (_("%s: CALL16 reloc at 0x%lx not against global symbol"), | |
6254 | bfd_get_filename (abfd), (unsigned long) rel->r_offset); | |
6255 | bfd_set_error (bfd_error_bad_value); | |
6256 | return false; | |
6257 | } | |
6258 | ||
6259 | /* Make sure this symbol is output as a dynamic symbol. */ | |
6260 | if (h->dynindx == -1) | |
6261 | { | |
6262 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6263 | return false; | |
6264 | } | |
6265 | ||
6266 | if (h->got.offset != (bfd_vma) -1) | |
6267 | { | |
6268 | /* We have already allocated space in the .got. */ | |
6269 | break; | |
6270 | } | |
6271 | ||
6272 | /* Note the index of the first global got symbol in .dynsym. */ | |
6273 | if (g->global_gotsym == 0 | |
6274 | || g->global_gotsym > (unsigned long) h->dynindx) | |
6275 | g->global_gotsym = h->dynindx; | |
6276 | ||
6277 | /* Make this symbol to have the corresponding got entry. */ | |
6278 | h->got.offset = 0; | |
6279 | ||
6280 | /* We need a stub, not a plt entry for the undefined | |
6281 | function. But we record it as if it needs plt. See | |
6282 | elf_adjust_dynamic_symbol in elflink.h. */ | |
6283 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
6284 | h->type = STT_FUNC; | |
6285 | ||
6286 | break; | |
6287 | ||
6288 | case R_MIPS_GOT16: | |
6289 | case R_MIPS_GOT_HI16: | |
6290 | case R_MIPS_GOT_LO16: | |
6291 | /* This symbol requires a global offset table entry. */ | |
6292 | ||
6293 | if (h != NULL) | |
6294 | { | |
6295 | /* Make sure this symbol is output as a dynamic symbol. */ | |
6296 | if (h->dynindx == -1) | |
6297 | { | |
6298 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6299 | return false; | |
6300 | } | |
6301 | ||
6302 | if (h->got.offset != (bfd_vma) -1) | |
6303 | { | |
6304 | /* We have already allocated space in the .got. */ | |
6305 | break; | |
6306 | } | |
6307 | /* Note the index of the first global got symbol in | |
6308 | .dynsym. */ | |
6309 | if (g->global_gotsym == 0 | |
6310 | || g->global_gotsym > (unsigned long) h->dynindx) | |
6311 | g->global_gotsym = h->dynindx; | |
6312 | ||
6313 | /* Make this symbol to be the global got symbol. */ | |
6314 | h->got.offset = 0; | |
6315 | } | |
6316 | ||
6317 | break; | |
6318 | ||
6319 | case R_MIPS_32: | |
6320 | case R_MIPS_REL32: | |
6321 | if ((info->shared || h != NULL) | |
6322 | && (sec->flags & SEC_ALLOC) != 0) | |
6323 | { | |
6324 | if (sreloc == NULL) | |
6325 | { | |
6326 | const char *name = ".rel.dyn"; | |
6327 | ||
6328 | sreloc = bfd_get_section_by_name (dynobj, name); | |
6329 | if (sreloc == NULL) | |
6330 | { | |
6331 | sreloc = bfd_make_section (dynobj, name); | |
6332 | if (sreloc == NULL | |
6333 | || ! bfd_set_section_flags (dynobj, sreloc, | |
6334 | (SEC_ALLOC | |
6335 | | SEC_LOAD | |
6336 | | SEC_HAS_CONTENTS | |
6337 | | SEC_IN_MEMORY | |
6338 | | SEC_LINKER_CREATED | |
6339 | | SEC_READONLY)) | |
6340 | || ! bfd_set_section_alignment (dynobj, sreloc, | |
6341 | 4)) | |
6342 | return false; | |
6343 | } | |
6344 | } | |
6345 | if (info->shared) | |
6346 | { | |
6347 | /* When creating a shared object, we must copy these | |
6348 | reloc types into the output file as R_MIPS_REL32 | |
6349 | relocs. We make room for this reloc in the | |
6350 | .rel.dyn reloc section */ | |
6351 | if (sreloc->_raw_size == 0) | |
6352 | { | |
6353 | /* Add a null element. */ | |
6354 | sreloc->_raw_size += sizeof (Elf32_External_Rel); | |
6355 | ++sreloc->reloc_count; | |
6356 | } | |
6357 | sreloc->_raw_size += sizeof (Elf32_External_Rel); | |
6358 | } | |
6359 | else | |
6360 | { | |
6361 | struct mips_elf_link_hash_entry *hmips; | |
6362 | ||
6363 | /* We only need to copy this reloc if the symbol is | |
6364 | defined in a dynamic object. */ | |
6365 | hmips = (struct mips_elf_link_hash_entry *) h; | |
6366 | ++hmips->mips_32_relocs; | |
6367 | } | |
6368 | } | |
6369 | ||
6370 | if (SGI_COMPAT (abfd)) | |
6371 | mips_elf_hash_table (info)->compact_rel_size += | |
6372 | sizeof (Elf32_External_crinfo); | |
6373 | ||
6374 | break; | |
6375 | ||
6376 | case R_MIPS_26: | |
6377 | case R_MIPS_GPREL16: | |
6378 | case R_MIPS_LITERAL: | |
6379 | case R_MIPS_GPREL32: | |
6380 | if (SGI_COMPAT (abfd)) | |
6381 | mips_elf_hash_table (info)->compact_rel_size += | |
6382 | sizeof (Elf32_External_crinfo); | |
6383 | break; | |
6384 | ||
6385 | /* This relocation describes the C++ object vtable hierarchy. | |
6386 | Reconstruct it for later use during GC. */ | |
6387 | case R_MIPS_GNU_VTINHERIT: | |
6388 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
6389 | return false; | |
6390 | break; | |
6391 | ||
6392 | /* This relocation describes which C++ vtable entries are actually | |
6393 | used. Record for later use during GC. */ | |
6394 | case R_MIPS_GNU_VTENTRY: | |
6395 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
6396 | return false; | |
6397 | break; | |
6398 | ||
6399 | default: | |
6400 | break; | |
6401 | } | |
6402 | ||
6403 | /* If this reloc is not a 16 bit call, and it has a global | |
6404 | symbol, then we will need the fn_stub if there is one. | |
6405 | References from a stub section do not count. */ | |
6406 | if (h != NULL | |
6407 | && ELF32_R_TYPE (rel->r_info) != R_MIPS16_26 | |
6408 | && strncmp (bfd_get_section_name (abfd, sec), FN_STUB, | |
6409 | sizeof FN_STUB - 1) != 0 | |
6410 | && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB, | |
6411 | sizeof CALL_STUB - 1) != 0 | |
6412 | && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB, | |
6413 | sizeof CALL_FP_STUB - 1) != 0) | |
6414 | { | |
6415 | struct mips_elf_link_hash_entry *mh; | |
6416 | ||
6417 | mh = (struct mips_elf_link_hash_entry *) h; | |
6418 | mh->need_fn_stub = true; | |
6419 | } | |
6420 | } | |
6421 | ||
6422 | return true; | |
6423 | } | |
6424 | ||
6425 | /* Return the section that should be marked against GC for a given | |
6426 | relocation. */ | |
6427 | ||
6428 | static asection * | |
6429 | mips_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
6430 | bfd *abfd; | |
6431 | struct bfd_link_info *info; | |
6432 | Elf_Internal_Rela *rel; | |
6433 | struct elf_link_hash_entry *h; | |
6434 | Elf_Internal_Sym *sym; | |
6435 | { | |
6436 | /* ??? Do mips16 stub sections need to be handled special? */ | |
6437 | ||
6438 | if (h != NULL) | |
6439 | { | |
6440 | switch (ELF32_R_TYPE (rel->r_info)) | |
6441 | { | |
6442 | case R_MIPS_GNU_VTINHERIT: | |
6443 | case R_MIPS_GNU_VTENTRY: | |
6444 | break; | |
6445 | ||
6446 | default: | |
6447 | switch (h->root.type) | |
6448 | { | |
6449 | case bfd_link_hash_defined: | |
6450 | case bfd_link_hash_defweak: | |
6451 | return h->root.u.def.section; | |
6452 | ||
6453 | case bfd_link_hash_common: | |
6454 | return h->root.u.c.p->section; | |
6455 | ||
6456 | default: | |
6457 | break; | |
6458 | } | |
6459 | } | |
6460 | } | |
6461 | else | |
6462 | { | |
6463 | if (!(elf_bad_symtab (abfd) | |
6464 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
6465 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
6466 | && sym->st_shndx != SHN_COMMON)) | |
6467 | { | |
6468 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
6469 | } | |
6470 | } | |
6471 | ||
6472 | return NULL; | |
6473 | } | |
6474 | ||
6475 | /* Update the got entry reference counts for the section being removed. */ | |
6476 | ||
6477 | static boolean | |
6478 | mips_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
6479 | bfd *abfd; | |
6480 | struct bfd_link_info *info; | |
6481 | asection *sec; | |
6482 | const Elf_Internal_Rela *relocs; | |
6483 | { | |
6484 | #if 0 | |
6485 | Elf_Internal_Shdr *symtab_hdr; | |
6486 | struct elf_link_hash_entry **sym_hashes; | |
6487 | bfd_signed_vma *local_got_refcounts; | |
6488 | const Elf_Internal_Rela *rel, *relend; | |
6489 | unsigned long r_symndx; | |
6490 | struct elf_link_hash_entry *h; | |
6491 | ||
6492 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6493 | sym_hashes = elf_sym_hashes (abfd); | |
6494 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
6495 | ||
6496 | relend = relocs + sec->reloc_count; | |
6497 | for (rel = relocs; rel < relend; rel++) | |
6498 | switch (ELF32_R_TYPE (rel->r_info)) | |
6499 | { | |
6500 | case R_MIPS_GOT16: | |
6501 | case R_MIPS_CALL16: | |
6502 | case R_MIPS_CALL_HI16: | |
6503 | case R_MIPS_CALL_LO16: | |
6504 | case R_MIPS_GOT_HI16: | |
6505 | case R_MIPS_GOT_LO16: | |
6506 | /* ??? It would seem that the existing MIPS code does no sort | |
6507 | of reference counting or whatnot on its GOT and PLT entries, | |
6508 | so it is not possible to garbage collect them at this time. */ | |
6509 | break; | |
6510 | ||
6511 | default: | |
6512 | break; | |
6513 | } | |
6514 | #endif | |
6515 | ||
6516 | return true; | |
6517 | } | |
6518 | ||
6519 | ||
6520 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6521 | regular object. The current definition is in some section of the | |
6522 | dynamic object, but we're not including those sections. We have to | |
6523 | change the definition to something the rest of the link can | |
6524 | understand. */ | |
6525 | ||
6526 | static boolean | |
6527 | mips_elf_adjust_dynamic_symbol (info, h) | |
6528 | struct bfd_link_info *info; | |
6529 | struct elf_link_hash_entry *h; | |
6530 | { | |
6531 | bfd *dynobj; | |
6532 | struct mips_elf_link_hash_entry *hmips; | |
6533 | asection *s; | |
6534 | ||
6535 | dynobj = elf_hash_table (info)->dynobj; | |
6536 | ||
6537 | /* Make sure we know what is going on here. */ | |
6538 | BFD_ASSERT (dynobj != NULL | |
6539 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
6540 | || h->weakdef != NULL | |
6541 | || ((h->elf_link_hash_flags | |
6542 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
6543 | && (h->elf_link_hash_flags | |
6544 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
6545 | && (h->elf_link_hash_flags | |
6546 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
6547 | ||
6548 | /* If this symbol is defined in a dynamic object, we need to copy | |
6549 | any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output | |
6550 | file. */ | |
6551 | hmips = (struct mips_elf_link_hash_entry *) h; | |
6552 | if (! info->relocateable | |
6553 | && hmips->mips_32_relocs != 0 | |
6554 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
6555 | { | |
6556 | s = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
6557 | BFD_ASSERT (s != NULL); | |
6558 | ||
6559 | if (s->_raw_size == 0) | |
6560 | { | |
6561 | /* Make room for a null element. */ | |
6562 | s->_raw_size += sizeof (Elf32_External_Rel); | |
6563 | ++s->reloc_count; | |
6564 | } | |
6565 | s->_raw_size += hmips->mips_32_relocs * sizeof (Elf32_External_Rel); | |
6566 | } | |
6567 | ||
6568 | /* For a function, create a stub, if needed. */ | |
6569 | if (h->type == STT_FUNC | |
6570 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
6571 | { | |
6572 | if (! elf_hash_table (info)->dynamic_sections_created) | |
6573 | return true; | |
6574 | ||
6575 | /* If this symbol is not defined in a regular file, then set | |
6576 | the symbol to the stub location. This is required to make | |
6577 | function pointers compare as equal between the normal | |
6578 | executable and the shared library. */ | |
6579 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
6580 | { | |
6581 | /* We need .stub section. */ | |
6582 | s = bfd_get_section_by_name (dynobj, ".stub"); | |
6583 | BFD_ASSERT (s != NULL); | |
6584 | ||
6585 | h->root.u.def.section = s; | |
6586 | h->root.u.def.value = s->_raw_size; | |
6587 | ||
6588 | /* XXX Write this stub address somewhere. */ | |
6589 | h->plt.offset = s->_raw_size; | |
6590 | ||
6591 | /* Make room for this stub code. */ | |
6592 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
6593 | ||
6594 | /* The last half word of the stub will be filled with the index | |
6595 | of this symbol in .dynsym section. */ | |
6596 | return true; | |
6597 | } | |
6598 | } | |
6599 | ||
6600 | /* If this is a weak symbol, and there is a real definition, the | |
6601 | processor independent code will have arranged for us to see the | |
6602 | real definition first, and we can just use the same value. */ | |
6603 | if (h->weakdef != NULL) | |
6604 | { | |
6605 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
6606 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
6607 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
6608 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
6609 | return true; | |
6610 | } | |
6611 | ||
6612 | /* This is a reference to a symbol defined by a dynamic object which | |
6613 | is not a function. */ | |
6614 | ||
6615 | return true; | |
6616 | } | |
6617 | ||
6618 | /* This function is called after all the input files have been read, | |
6619 | and the input sections have been assigned to output sections. We | |
6620 | check for any mips16 stub sections that we can discard. */ | |
6621 | ||
6622 | static boolean mips_elf_check_mips16_stubs | |
6623 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
6624 | ||
6625 | static boolean | |
6626 | mips_elf_always_size_sections (output_bfd, info) | |
6627 | bfd *output_bfd; | |
6628 | struct bfd_link_info *info; | |
6629 | { | |
6630 | asection *ri; | |
6631 | ||
6632 | /* The .reginfo section has a fixed size. */ | |
6633 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
6634 | if (ri != NULL) | |
6635 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); | |
6636 | ||
6637 | if (info->relocateable | |
6638 | || ! mips_elf_hash_table (info)->mips16_stubs_seen) | |
6639 | return true; | |
6640 | ||
6641 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
6642 | mips_elf_check_mips16_stubs, | |
6643 | (PTR) NULL); | |
6644 | ||
6645 | return true; | |
6646 | } | |
6647 | ||
6648 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
6649 | discard them. */ | |
6650 | ||
6651 | /*ARGSUSED*/ | |
6652 | static boolean | |
6653 | mips_elf_check_mips16_stubs (h, data) | |
6654 | struct mips_elf_link_hash_entry *h; | |
6655 | PTR data; | |
6656 | { | |
6657 | if (h->fn_stub != NULL | |
6658 | && ! h->need_fn_stub) | |
6659 | { | |
6660 | /* We don't need the fn_stub; the only references to this symbol | |
6661 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
6662 | being included in the link. */ | |
6663 | h->fn_stub->_raw_size = 0; | |
6664 | h->fn_stub->_cooked_size = 0; | |
6665 | h->fn_stub->flags &= ~ SEC_RELOC; | |
6666 | h->fn_stub->reloc_count = 0; | |
6667 | h->fn_stub->flags |= SEC_EXCLUDE; | |
6668 | } | |
6669 | ||
6670 | if (h->call_stub != NULL | |
6671 | && h->root.other == STO_MIPS16) | |
6672 | { | |
6673 | /* We don't need the call_stub; this is a 16 bit function, so | |
6674 | calls from other 16 bit functions are OK. Clobber the size | |
6675 | to 0 to prevent it from being included in the link. */ | |
6676 | h->call_stub->_raw_size = 0; | |
6677 | h->call_stub->_cooked_size = 0; | |
6678 | h->call_stub->flags &= ~ SEC_RELOC; | |
6679 | h->call_stub->reloc_count = 0; | |
6680 | h->call_stub->flags |= SEC_EXCLUDE; | |
6681 | } | |
6682 | ||
6683 | if (h->call_fp_stub != NULL | |
6684 | && h->root.other == STO_MIPS16) | |
6685 | { | |
6686 | /* We don't need the call_stub; this is a 16 bit function, so | |
6687 | calls from other 16 bit functions are OK. Clobber the size | |
6688 | to 0 to prevent it from being included in the link. */ | |
6689 | h->call_fp_stub->_raw_size = 0; | |
6690 | h->call_fp_stub->_cooked_size = 0; | |
6691 | h->call_fp_stub->flags &= ~ SEC_RELOC; | |
6692 | h->call_fp_stub->reloc_count = 0; | |
6693 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
6694 | } | |
6695 | ||
6696 | return true; | |
6697 | } | |
6698 | ||
6699 | /* Set the sizes of the dynamic sections. */ | |
6700 | ||
6701 | static boolean | |
6702 | mips_elf_size_dynamic_sections (output_bfd, info) | |
6703 | bfd *output_bfd; | |
6704 | struct bfd_link_info *info; | |
6705 | { | |
6706 | bfd *dynobj; | |
6707 | asection *s; | |
6708 | boolean reltext; | |
6709 | asection *sgot; | |
6710 | struct mips_got_info *g; | |
6711 | ||
6712 | dynobj = elf_hash_table (info)->dynobj; | |
6713 | BFD_ASSERT (dynobj != NULL); | |
6714 | ||
6715 | if (elf_hash_table (info)->dynamic_sections_created) | |
6716 | { | |
6717 | /* Set the contents of the .interp section to the interpreter. */ | |
6718 | if (! info->shared) | |
6719 | { | |
6720 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
6721 | BFD_ASSERT (s != NULL); | |
6722 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6723 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6724 | } | |
6725 | } | |
6726 | ||
6727 | /* Recompute the size of .got for local entires (reserved and | |
6728 | hipages) if needed. To estimate it, get the upper bound of total | |
6729 | size of loadable sections. */ | |
6730 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6731 | ||
6732 | if (sgot != NULL) | |
6733 | { | |
6734 | bfd_size_type loadable_size = 0; | |
6735 | bfd_size_type local_gotno; | |
6736 | struct _bfd *sub; | |
6737 | ||
6738 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6739 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6740 | BFD_ASSERT (g != NULL); | |
6741 | ||
6742 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
6743 | for (s = sub->sections; s != NULL; s = s->next) | |
6744 | { | |
6745 | if ((s->flags & SEC_ALLOC) == 0) | |
6746 | continue; | |
6747 | loadable_size += (s->_raw_size + 0xf) & ~0xf; | |
6748 | } | |
6749 | ||
6750 | loadable_size += MIPS_FUNCTION_STUB_SIZE; | |
6751 | ||
6752 | /* Assume there are two loadable segments consisting of | |
6753 | contiguous sections. Is 5 enough? */ | |
6754 | local_gotno = (loadable_size >> 16) + 5 + MIPS_RESERVED_GOTNO; | |
6755 | g->local_gotno = local_gotno; | |
6756 | sgot->_raw_size += local_gotno * 4; | |
6757 | } | |
6758 | ||
6759 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
6760 | determined the sizes of the various dynamic sections. Allocate | |
6761 | memory for them. */ | |
6762 | reltext = false; | |
6763 | for (s = dynobj->sections; s != NULL; s = s->next) | |
6764 | { | |
6765 | const char *name; | |
6766 | boolean strip; | |
6767 | ||
6768 | /* It's OK to base decisions on the section name, because none | |
6769 | of the dynobj section names depend upon the input files. */ | |
6770 | name = bfd_get_section_name (dynobj, s); | |
6771 | ||
6772 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
6773 | continue; | |
6774 | ||
6775 | strip = false; | |
6776 | ||
6777 | if (strncmp (name, ".rel", 4) == 0) | |
6778 | { | |
6779 | if (s->_raw_size == 0) | |
6780 | { | |
6781 | /* We only strip the section if the output section name | |
6782 | has the same name. Otherwise, there might be several | |
6783 | input sections for this output section. FIXME: This | |
6784 | code is probably not needed these days anyhow, since | |
6785 | the linker now does not create empty output sections. */ | |
6786 | if (s->output_section != NULL | |
6787 | && strcmp (name, | |
6788 | bfd_get_section_name (s->output_section->owner, | |
6789 | s->output_section)) == 0) | |
6790 | strip = true; | |
6791 | } | |
6792 | else | |
6793 | { | |
6794 | const char *outname; | |
6795 | asection *target; | |
6796 | ||
6797 | /* If this relocation section applies to a read only | |
6798 | section, then we probably need a DT_TEXTREL entry. | |
6799 | If the relocation section is .rel.dyn, we always | |
6800 | assert a DT_TEXTREL entry rather than testing whether | |
6801 | there exists a relocation to a read only section or | |
6802 | not. */ | |
6803 | outname = bfd_get_section_name (output_bfd, | |
6804 | s->output_section); | |
6805 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
6806 | if ((target != NULL | |
6807 | && (target->flags & SEC_READONLY) != 0 | |
6808 | && (target->flags & SEC_ALLOC) != 0) | |
6809 | || strcmp (outname, ".rel.dyn") == 0) | |
6810 | reltext = true; | |
6811 | ||
6812 | /* We use the reloc_count field as a counter if we need | |
6813 | to copy relocs into the output file. */ | |
6814 | if (strcmp (name, ".rel.dyn") != 0) | |
6815 | s->reloc_count = 0; | |
6816 | } | |
6817 | } | |
6818 | else if (strncmp (name, ".got", 4) == 0) | |
6819 | { | |
6820 | int i; | |
6821 | ||
6822 | BFD_ASSERT (elf_section_data (s) != NULL); | |
6823 | g = (struct mips_got_info *) elf_section_data (s)->tdata; | |
6824 | BFD_ASSERT (g != NULL); | |
6825 | ||
6826 | /* Fix the size of .got section for the correspondence of | |
6827 | global symbols and got entries. This adds some useless | |
6828 | got entries. Is this required by ABI really? */ | |
6829 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym; | |
6830 | s->_raw_size += i * 4; | |
6831 | } | |
6832 | else if (strncmp (name, ".stub", 5) == 0) | |
6833 | { | |
6834 | /* Irix rld assumes that the function stub isn't at the end | |
6835 | of .text section. So put a dummy. XXX */ | |
6836 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
6837 | } | |
6838 | else if (! info->shared | |
6839 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
6840 | && strncmp (name, ".rld_map", 8) == 0) | |
6841 | { | |
6842 | /* We add a room for __rld_map. It will be filled in by the | |
6843 | rtld to contain a pointer to the _r_debug structure. */ | |
6844 | s->_raw_size += 4; | |
6845 | } | |
6846 | else if (SGI_COMPAT (output_bfd) | |
6847 | && strncmp (name, ".compact_rel", 12) == 0) | |
6848 | s->_raw_size += mips_elf_hash_table (info)->compact_rel_size; | |
6849 | else if (strncmp (name, ".init", 5) != 0) | |
6850 | { | |
6851 | /* It's not one of our sections, so don't allocate space. */ | |
6852 | continue; | |
6853 | } | |
6854 | ||
6855 | if (strip) | |
6856 | { | |
6857 | _bfd_strip_section_from_output (s); | |
6858 | continue; | |
6859 | } | |
6860 | ||
6861 | /* Allocate memory for the section contents. */ | |
6862 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); | |
6863 | if (s->contents == NULL && s->_raw_size != 0) | |
6864 | { | |
6865 | bfd_set_error (bfd_error_no_memory); | |
6866 | return false; | |
6867 | } | |
6868 | memset (s->contents, 0, s->_raw_size); | |
6869 | } | |
6870 | ||
6871 | if (elf_hash_table (info)->dynamic_sections_created) | |
6872 | { | |
6873 | /* Add some entries to the .dynamic section. We fill in the | |
6874 | values later, in elf_mips_finish_dynamic_sections, but we | |
6875 | must add the entries now so that we get the correct size for | |
6876 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6877 | dynamic linker and used by the debugger. */ | |
6878 | if (! info->shared) | |
6879 | { | |
6880 | if (SGI_COMPAT (output_bfd)) | |
6881 | { | |
6882 | /* SGI object has the equivalence of DT_DEBUG in the | |
6883 | DT_MIPS_RLD_MAP entry. */ | |
6884 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) | |
6885 | return false; | |
6886 | } | |
6887 | else | |
6888 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
6889 | return false; | |
6890 | } | |
6891 | ||
6892 | if (reltext) | |
6893 | { | |
6894 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
6895 | return false; | |
6896 | } | |
6897 | ||
6898 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
6899 | return false; | |
6900 | ||
6901 | if (bfd_get_section_by_name (dynobj, ".rel.dyn")) | |
6902 | { | |
6903 | if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0)) | |
6904 | return false; | |
6905 | ||
6906 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0)) | |
6907 | return false; | |
6908 | ||
6909 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELENT, 0)) | |
6910 | return false; | |
6911 | } | |
6912 | ||
6913 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) | |
6914 | return false; | |
6915 | ||
6916 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) | |
6917 | return false; | |
6918 | ||
6919 | if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) | |
6920 | { | |
6921 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) | |
6922 | return false; | |
6923 | ||
6924 | s = bfd_get_section_by_name (dynobj, ".liblist"); | |
6925 | BFD_ASSERT (s != NULL); | |
6926 | ||
6927 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) | |
6928 | return false; | |
6929 | } | |
6930 | ||
6931 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) | |
6932 | return false; | |
6933 | ||
6934 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) | |
6935 | return false; | |
6936 | ||
6937 | #if 0 | |
6938 | /* Time stamps in executable files are a bad idea. */ | |
6939 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) | |
6940 | return false; | |
6941 | #endif | |
6942 | ||
6943 | #if 0 /* FIXME */ | |
6944 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) | |
6945 | return false; | |
6946 | #endif | |
6947 | ||
6948 | #if 0 /* FIXME */ | |
6949 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) | |
6950 | return false; | |
6951 | #endif | |
6952 | ||
6953 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) | |
6954 | return false; | |
6955 | ||
6956 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) | |
6957 | return false; | |
6958 | ||
6959 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) | |
6960 | return false; | |
6961 | ||
6962 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) | |
6963 | return false; | |
6964 | ||
6965 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) | |
6966 | return false; | |
6967 | ||
6968 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_HIPAGENO, 0)) | |
6969 | return false; | |
6970 | ||
6971 | #if 0 /* (SGI_COMPAT) */ | |
6972 | if (! bfd_get_section_by_name (dynobj, ".init")) | |
6973 | if (! bfd_elf32_add_dynamic_entry (info, DT_INIT, 0)) | |
6974 | return false; | |
6975 | ||
6976 | if (! bfd_get_section_by_name (dynobj, ".fini")) | |
6977 | if (! bfd_elf32_add_dynamic_entry (info, DT_FINI, 0)) | |
6978 | return false; | |
6979 | #endif | |
6980 | } | |
6981 | ||
6982 | /* If we use dynamic linking, we generate a section symbol for each | |
6983 | output section. These are local symbols, which means that they | |
6984 | must come first in the dynamic symbol table. | |
6985 | That means we must increment the dynamic symbol index of every | |
6986 | other dynamic symbol. */ | |
6987 | { | |
6988 | unsigned int c, i; | |
6989 | struct mips_got_info *g; | |
6990 | ||
6991 | c = 0; | |
6992 | if (elf_hash_table (info)->dynamic_sections_created) | |
6993 | { | |
6994 | #if 0 | |
6995 | /* We no longer try to restrict the set of sections which get | |
6996 | dynamic symbol table entries, since it fails if we have | |
6997 | other random sections which need dynamic relocations. */ | |
6998 | const char * const *namep; | |
6999 | bfd_size_type strindex; | |
7000 | struct bfd_strtab_hash *dynstr; | |
7001 | ||
7002 | if (SGI_COMPAT (output_bfd)) | |
7003 | { | |
7004 | c = SIZEOF_MIPS_DYNSYM_SECNAMES - 1; | |
7005 | elf_link_hash_traverse (elf_hash_table (info), | |
7006 | mips_elf_adjust_dynindx, | |
7007 | (PTR) &c); | |
7008 | elf_hash_table (info)->dynsymcount += c; | |
7009 | ||
7010 | dynstr = elf_hash_table (info)->dynstr; | |
7011 | BFD_ASSERT (dynstr != NULL); | |
7012 | ||
7013 | for (i = 1, namep = mips_elf_dynsym_sec_names; | |
7014 | *namep != NULL; | |
7015 | i++, namep++) | |
7016 | { | |
7017 | s = bfd_get_section_by_name (output_bfd, *namep); | |
7018 | if (s != NULL) | |
7019 | elf_section_data (s)->dynindx = i; | |
7020 | ||
7021 | strindex = _bfd_stringtab_add (dynstr, *namep, true, false); | |
7022 | if (strindex == (bfd_size_type) -1) | |
7023 | return false; | |
7024 | ||
7025 | mips_elf_hash_table (info)->dynsym_sec_strindex[i] = strindex; | |
7026 | } | |
7027 | } | |
7028 | else | |
7029 | #endif /* 0 */ | |
7030 | { | |
7031 | c = bfd_count_sections (output_bfd); | |
7032 | elf_link_hash_traverse (elf_hash_table (info), | |
7033 | mips_elf_adjust_dynindx, | |
7034 | (PTR) &c); | |
7035 | elf_hash_table (info)->dynsymcount += c; | |
7036 | ||
7037 | for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) | |
7038 | { | |
7039 | elf_section_data (s)->dynindx = i; | |
7040 | /* These symbols will have no names, so we don't need to | |
7041 | fiddle with dynstr_index. */ | |
7042 | } | |
7043 | } | |
7044 | } | |
7045 | ||
7046 | if (sgot != NULL) | |
7047 | { | |
7048 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
7049 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
7050 | BFD_ASSERT (g != NULL); | |
7051 | ||
7052 | /* If there are no global got symbols, fake the last symbol so | |
7053 | for safety. */ | |
7054 | if (g->global_gotsym) | |
7055 | g->global_gotsym += c; | |
7056 | else | |
7057 | g->global_gotsym = elf_hash_table (info)->dynsymcount - 1; | |
7058 | } | |
7059 | } | |
7060 | ||
7061 | return true; | |
7062 | } | |
7063 | ||
7064 | /* Increment the index of a dynamic symbol by a given amount. Called | |
7065 | via elf_link_hash_traverse. */ | |
7066 | ||
7067 | static boolean | |
7068 | mips_elf_adjust_dynindx (h, cparg) | |
7069 | struct elf_link_hash_entry *h; | |
7070 | PTR cparg; | |
7071 | { | |
7072 | unsigned int *cp = (unsigned int *) cparg; | |
7073 | ||
7074 | if (h->dynindx != -1) | |
7075 | h->dynindx += *cp; | |
7076 | return true; | |
7077 | } | |
7078 | ||
7079 | /* Finish up dynamic symbol handling. We set the contents of various | |
7080 | dynamic sections here. */ | |
7081 | ||
7082 | static boolean | |
7083 | mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
7084 | bfd *output_bfd; | |
7085 | struct bfd_link_info *info; | |
7086 | struct elf_link_hash_entry *h; | |
7087 | Elf_Internal_Sym *sym; | |
7088 | { | |
7089 | bfd *dynobj; | |
7090 | bfd_vma gval; | |
7091 | asection *sgot; | |
7092 | struct mips_got_info *g; | |
7093 | const char *name; | |
7094 | ||
7095 | dynobj = elf_hash_table (info)->dynobj; | |
7096 | gval = sym->st_value; | |
7097 | ||
7098 | if (h->plt.offset != (bfd_vma) -1) | |
7099 | { | |
7100 | asection *s; | |
7101 | bfd_byte *p; | |
7102 | bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; | |
7103 | ||
7104 | /* This symbol has a stub. Set it up. */ | |
7105 | ||
7106 | BFD_ASSERT (h->dynindx != -1); | |
7107 | ||
7108 | s = bfd_get_section_by_name (dynobj, ".stub"); | |
7109 | BFD_ASSERT (s != NULL); | |
7110 | ||
7111 | /* Fill the stub. */ | |
7112 | p = stub; | |
7113 | bfd_put_32 (output_bfd, STUB_LW(output_bfd), p); | |
7114 | p += 4; | |
7115 | bfd_put_32 (output_bfd, STUB_MOVE, p); | |
7116 | p += 4; | |
7117 | ||
7118 | /* FIXME: Can h->dynindex be more than 64K? */ | |
7119 | if (h->dynindx & 0xffff0000) | |
7120 | return false; | |
7121 | ||
7122 | bfd_put_32 (output_bfd, STUB_JALR, p); | |
7123 | p += 4; | |
7124 | bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p); | |
7125 | ||
7126 | BFD_ASSERT (h->plt.offset <= s->_raw_size); | |
7127 | memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); | |
7128 | ||
7129 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
7130 | only for the referenced symbol. */ | |
7131 | sym->st_shndx = SHN_UNDEF; | |
7132 | ||
7133 | /* The run-time linker uses the st_value field of the symbol | |
7134 | to reset the global offset table entry for this external | |
7135 | to its stub address when unlinking a shared object. */ | |
7136 | gval = s->output_section->vma + s->output_offset + h->plt.offset; | |
7137 | sym->st_value = gval; | |
7138 | } | |
7139 | ||
7140 | BFD_ASSERT (h->dynindx != -1); | |
7141 | ||
7142 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
7143 | BFD_ASSERT (sgot != NULL); | |
7144 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
7145 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
7146 | BFD_ASSERT (g != NULL); | |
7147 | ||
7148 | if ((unsigned long) h->dynindx >= g->global_gotsym) | |
7149 | { | |
7150 | bfd_size_type offset; | |
7151 | ||
7152 | /* This symbol has an entry in the global offset table. Set its | |
7153 | value to the corresponding got entry, if needed. */ | |
7154 | if (h->got.offset == (bfd_vma) -1) | |
7155 | { | |
7156 | offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; | |
7157 | BFD_ASSERT (g->local_gotno * 4 <= offset | |
7158 | && offset < sgot->_raw_size); | |
7159 | bfd_put_32 (output_bfd, gval, sgot->contents + offset); | |
7160 | } | |
7161 | } | |
7162 | ||
7163 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
7164 | name = h->root.root.string; | |
7165 | if (strcmp (name, "_DYNAMIC") == 0 | |
7166 | || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7167 | sym->st_shndx = SHN_ABS; | |
7168 | else if (strcmp (name, "_DYNAMIC_LINK") == 0) | |
7169 | { | |
7170 | sym->st_shndx = SHN_ABS; | |
7171 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7172 | sym->st_value = 1; | |
7173 | } | |
7174 | else if (SGI_COMPAT (output_bfd)) | |
7175 | { | |
7176 | if (strcmp (name, "_gp_disp") == 0) | |
7177 | { | |
7178 | sym->st_shndx = SHN_ABS; | |
7179 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7180 | sym->st_value = elf_gp (output_bfd); | |
7181 | } | |
7182 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
7183 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
7184 | { | |
7185 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7186 | sym->st_other = STO_PROTECTED; | |
7187 | sym->st_value = 0; | |
7188 | sym->st_shndx = SHN_MIPS_DATA; | |
7189 | } | |
7190 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
7191 | { | |
7192 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7193 | sym->st_other = STO_PROTECTED; | |
7194 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
7195 | sym->st_shndx = SHN_ABS; | |
7196 | } | |
7197 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
7198 | { | |
7199 | if (h->type == STT_FUNC) | |
7200 | sym->st_shndx = SHN_MIPS_TEXT; | |
7201 | else if (h->type == STT_OBJECT) | |
7202 | sym->st_shndx = SHN_MIPS_DATA; | |
7203 | } | |
7204 | } | |
7205 | ||
7206 | if (SGI_COMPAT (output_bfd) | |
7207 | && ! info->shared) | |
7208 | { | |
7209 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
7210 | && strcmp (name, "__rld_map") == 0) | |
7211 | { | |
7212 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
7213 | BFD_ASSERT (s != NULL); | |
7214 | sym->st_value = s->output_section->vma + s->output_offset; | |
7215 | bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents); | |
7216 | if (mips_elf_hash_table (info)->rld_value == 0) | |
7217 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
7218 | } | |
7219 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
7220 | && strcmp (name, "__rld_obj_head") == 0) | |
7221 | { | |
7222 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
7223 | BFD_ASSERT (s != NULL); | |
7224 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
7225 | } | |
7226 | } | |
7227 | ||
7228 | /* If this is a mips16 symbol, force the value to be even. */ | |
7229 | if (sym->st_other == STO_MIPS16 | |
7230 | && (sym->st_value & 1) != 0) | |
7231 | --sym->st_value; | |
7232 | ||
7233 | return true; | |
7234 | } | |
7235 | ||
7236 | /* Finish up the dynamic sections. */ | |
7237 | ||
7238 | static boolean | |
7239 | mips_elf_finish_dynamic_sections (output_bfd, info) | |
7240 | bfd *output_bfd; | |
7241 | struct bfd_link_info *info; | |
7242 | { | |
7243 | bfd *dynobj; | |
7244 | asection *sdyn; | |
7245 | asection *sgot; | |
7246 | struct mips_got_info *g; | |
7247 | ||
7248 | dynobj = elf_hash_table (info)->dynobj; | |
7249 | ||
7250 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
7251 | ||
7252 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
7253 | if (sgot == NULL) | |
7254 | g = NULL; | |
7255 | else | |
7256 | { | |
7257 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
7258 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
7259 | BFD_ASSERT (g != NULL); | |
7260 | } | |
7261 | ||
7262 | if (elf_hash_table (info)->dynamic_sections_created) | |
7263 | { | |
7264 | Elf32_External_Dyn *dyncon, *dynconend; | |
7265 | ||
7266 | BFD_ASSERT (sdyn != NULL); | |
7267 | BFD_ASSERT (g != NULL); | |
7268 | ||
7269 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
7270 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
7271 | for (; dyncon < dynconend; dyncon++) | |
7272 | { | |
7273 | Elf_Internal_Dyn dyn; | |
7274 | const char *name; | |
7275 | size_t elemsize; | |
7276 | asection *s; | |
7277 | ||
7278 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
7279 | ||
7280 | switch (dyn.d_tag) | |
7281 | { | |
7282 | default: | |
7283 | break; | |
7284 | ||
7285 | case DT_RELENT: | |
7286 | s = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
7287 | BFD_ASSERT (s != NULL); | |
7288 | dyn.d_un.d_val = sizeof (Elf32_External_Rel); | |
7289 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7290 | break; | |
7291 | ||
7292 | case DT_STRSZ: | |
7293 | /* Rewrite DT_STRSZ. */ | |
7294 | dyn.d_un.d_val = | |
7295 | _bfd_stringtab_size (elf_hash_table (info)->dynstr); | |
7296 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7297 | break; | |
7298 | ||
7299 | case DT_PLTGOT: | |
7300 | name = ".got"; | |
7301 | goto get_vma; | |
7302 | case DT_MIPS_CONFLICT: | |
7303 | name = ".conflict"; | |
7304 | goto get_vma; | |
7305 | case DT_MIPS_LIBLIST: | |
7306 | name = ".liblist"; | |
7307 | get_vma: | |
7308 | s = bfd_get_section_by_name (output_bfd, name); | |
7309 | BFD_ASSERT (s != NULL); | |
7310 | dyn.d_un.d_ptr = s->vma; | |
7311 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7312 | break; | |
7313 | ||
7314 | case DT_MIPS_RLD_VERSION: | |
7315 | dyn.d_un.d_val = 1; /* XXX */ | |
7316 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7317 | break; | |
7318 | ||
7319 | case DT_MIPS_FLAGS: | |
7320 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
7321 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7322 | break; | |
7323 | ||
7324 | case DT_MIPS_CONFLICTNO: | |
7325 | name = ".conflict"; | |
7326 | elemsize = sizeof (Elf32_Conflict); | |
7327 | goto set_elemno; | |
7328 | ||
7329 | case DT_MIPS_LIBLISTNO: | |
7330 | name = ".liblist"; | |
7331 | elemsize = sizeof (Elf32_Lib); | |
7332 | set_elemno: | |
7333 | s = bfd_get_section_by_name (output_bfd, name); | |
7334 | if (s != NULL) | |
7335 | { | |
7336 | if (s->_cooked_size != 0) | |
7337 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
7338 | else | |
7339 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
7340 | } | |
7341 | else | |
7342 | dyn.d_un.d_val = 0; | |
7343 | ||
7344 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7345 | break; | |
7346 | ||
7347 | case DT_MIPS_TIME_STAMP: | |
7348 | time ((time_t *) &dyn.d_un.d_val); | |
7349 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7350 | break; | |
7351 | ||
7352 | case DT_MIPS_ICHECKSUM: | |
7353 | /* XXX FIXME: */ | |
7354 | break; | |
7355 | ||
7356 | case DT_MIPS_IVERSION: | |
7357 | /* XXX FIXME: */ | |
7358 | break; | |
7359 | ||
7360 | case DT_MIPS_BASE_ADDRESS: | |
7361 | s = output_bfd->sections; | |
7362 | BFD_ASSERT (s != NULL); | |
7363 | dyn.d_un.d_ptr = s->vma & ~(0xffff); | |
7364 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7365 | break; | |
7366 | ||
7367 | case DT_MIPS_LOCAL_GOTNO: | |
7368 | dyn.d_un.d_val = g->local_gotno; | |
7369 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7370 | break; | |
7371 | ||
7372 | case DT_MIPS_SYMTABNO: | |
7373 | name = ".dynsym"; | |
7374 | elemsize = sizeof (Elf32_External_Sym); | |
7375 | s = bfd_get_section_by_name (output_bfd, name); | |
7376 | BFD_ASSERT (s != NULL); | |
7377 | ||
7378 | if (s->_cooked_size != 0) | |
7379 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
7380 | else | |
7381 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
7382 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7383 | break; | |
7384 | ||
7385 | case DT_MIPS_UNREFEXTNO: | |
7386 | #if 0 | |
7387 | dyn.d_un.d_val = SIZEOF_MIPS_DYNSYM_SECNAMES; | |
7388 | #else | |
7389 | dyn.d_un.d_val = bfd_count_sections (output_bfd); | |
7390 | #endif | |
7391 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7392 | break; | |
7393 | ||
7394 | case DT_MIPS_GOTSYM: | |
7395 | dyn.d_un.d_val = g->global_gotsym; | |
7396 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7397 | break; | |
7398 | ||
7399 | case DT_MIPS_HIPAGENO: | |
7400 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; | |
7401 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7402 | break; | |
7403 | ||
7404 | case DT_MIPS_RLD_MAP: | |
7405 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
7406 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7407 | break; | |
7408 | ||
7409 | } | |
7410 | } | |
7411 | } | |
7412 | ||
7413 | /* The first entry of the global offset table will be filled at | |
7414 | runtime. The second entry will be used by some runtime loaders. | |
7415 | This isn't the case of Irix rld. */ | |
7416 | if (sgot != NULL && sgot->_raw_size > 0) | |
7417 | { | |
7418 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
7419 | bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 4); | |
7420 | } | |
7421 | ||
7422 | if (sgot != NULL) | |
7423 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
7424 | ||
7425 | { | |
7426 | asection *sdynsym; | |
7427 | asection *s; | |
7428 | Elf_Internal_Sym sym; | |
7429 | Elf32_compact_rel cpt; | |
7430 | ||
7431 | /* Set up the section symbols for the output sections. SGI sets | |
7432 | the STT_NOTYPE attribute for these symbols. Should we do so? */ | |
7433 | ||
7434 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
7435 | if (sdynsym != NULL) | |
7436 | { | |
7437 | #if 0 | |
7438 | const char *name; | |
7439 | const char * const * namep = mips_elf_dynsym_sec_names; | |
7440 | unsigned int i; | |
7441 | bfd_vma last; | |
7442 | long dindx; | |
7443 | ||
7444 | /* We no longer try to restrict the set of sections which get | |
7445 | dynamic symbol table entries, since it fails if we have | |
7446 | other random sections which need dynamic relocations. */ | |
7447 | if (SGI_COMPAT (output_bfd)) | |
7448 | { | |
7449 | sym.st_size = 0; | |
7450 | sym.st_name = 0; | |
7451 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7452 | sym.st_other = 0; | |
7453 | ||
7454 | i = 0; | |
7455 | last = 0; | |
7456 | dindx = 0; | |
7457 | while ((name = *namep++) != NULL) | |
7458 | { | |
7459 | s = bfd_get_section_by_name (output_bfd, name); | |
7460 | if (s != NULL) | |
7461 | { | |
7462 | sym.st_value = s->vma; | |
7463 | dindx = elf_section_data (s)->dynindx; | |
7464 | last = s->vma + s->_raw_size; | |
7465 | } | |
7466 | else | |
7467 | { | |
7468 | sym.st_value = last; | |
7469 | dindx++; | |
7470 | } | |
7471 | ||
7472 | sym.st_shndx = (i < MIPS_TEXT_DYNSYM_SECNO | |
7473 | ? SHN_MIPS_TEXT | |
7474 | : SHN_MIPS_DATA); | |
7475 | ++i; | |
7476 | sym.st_name = | |
7477 | mips_elf_hash_table (info)->dynsym_sec_strindex[dindx]; | |
7478 | ||
7479 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
7480 | (((Elf32_External_Sym *) | |
7481 | sdynsym->contents) | |
7482 | + dindx)); | |
7483 | } | |
7484 | ||
7485 | /* Set the sh_info field of the output .dynsym section to | |
7486 | the index of the first global symbol. */ | |
7487 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
7488 | SIZEOF_MIPS_DYNSYM_SECNAMES; | |
7489 | } | |
7490 | else | |
7491 | #endif /* 0 */ | |
7492 | { | |
7493 | sym.st_size = 0; | |
7494 | sym.st_name = 0; | |
7495 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
7496 | sym.st_other = 0; | |
7497 | ||
7498 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
7499 | { | |
7500 | int indx; | |
7501 | ||
7502 | sym.st_value = s->vma; | |
7503 | ||
7504 | indx = elf_section_data (s)->this_idx; | |
7505 | BFD_ASSERT (indx > 0); | |
7506 | sym.st_shndx = indx; | |
7507 | ||
7508 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
7509 | (((Elf32_External_Sym *) | |
7510 | sdynsym->contents) | |
7511 | + elf_section_data (s)->dynindx)); | |
7512 | } | |
7513 | ||
7514 | /* Set the sh_info field of the output .dynsym section to | |
7515 | the index of the first global symbol. */ | |
7516 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
7517 | bfd_count_sections (output_bfd) + 1; | |
7518 | } | |
7519 | } | |
7520 | ||
7521 | if (SGI_COMPAT (output_bfd)) | |
7522 | { | |
7523 | /* Write .compact_rel section out. */ | |
7524 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
7525 | if (s != NULL) | |
7526 | { | |
7527 | cpt.id1 = 1; | |
7528 | cpt.num = s->reloc_count; | |
7529 | cpt.id2 = 2; | |
7530 | cpt.offset = (s->output_section->filepos | |
7531 | + sizeof (Elf32_External_compact_rel)); | |
7532 | cpt.reserved0 = 0; | |
7533 | cpt.reserved1 = 0; | |
7534 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
7535 | ((Elf32_External_compact_rel *) | |
7536 | s->contents)); | |
7537 | ||
7538 | /* Clean up a dummy stub function entry in .text. */ | |
7539 | s = bfd_get_section_by_name (dynobj, ".stub"); | |
7540 | if (s != NULL) | |
7541 | { | |
7542 | file_ptr dummy_offset; | |
7543 | ||
7544 | BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE); | |
7545 | dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE; | |
7546 | memset (s->contents + dummy_offset, 0, | |
7547 | MIPS_FUNCTION_STUB_SIZE); | |
7548 | } | |
7549 | } | |
7550 | } | |
7551 | ||
7552 | /* Clean up a first relocation in .rel.dyn. */ | |
7553 | s = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
7554 | if (s != NULL && s->_raw_size > 0) | |
7555 | memset (s->contents, 0, sizeof (Elf32_External_Rel)); | |
7556 | } | |
7557 | ||
7558 | return true; | |
7559 | } | |
7560 | \f | |
7561 | /* This is almost identical to bfd_generic_get_... except that some | |
7562 | MIPS relocations need to be handled specially. Sigh. */ | |
7563 | ||
7564 | static bfd_byte * | |
7565 | elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data, | |
7566 | relocateable, symbols) | |
7567 | bfd *abfd; | |
7568 | struct bfd_link_info *link_info; | |
7569 | struct bfd_link_order *link_order; | |
7570 | bfd_byte *data; | |
7571 | boolean relocateable; | |
7572 | asymbol **symbols; | |
7573 | { | |
7574 | /* Get enough memory to hold the stuff */ | |
7575 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
7576 | asection *input_section = link_order->u.indirect.section; | |
7577 | ||
7578 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
7579 | arelent **reloc_vector = NULL; | |
7580 | long reloc_count; | |
7581 | ||
7582 | if (reloc_size < 0) | |
7583 | goto error_return; | |
7584 | ||
7585 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
7586 | if (reloc_vector == NULL && reloc_size != 0) | |
7587 | goto error_return; | |
7588 | ||
7589 | /* read in the section */ | |
7590 | if (!bfd_get_section_contents (input_bfd, | |
7591 | input_section, | |
7592 | (PTR) data, | |
7593 | 0, | |
7594 | input_section->_raw_size)) | |
7595 | goto error_return; | |
7596 | ||
7597 | /* We're not relaxing the section, so just copy the size info */ | |
7598 | input_section->_cooked_size = input_section->_raw_size; | |
7599 | input_section->reloc_done = true; | |
7600 | ||
7601 | reloc_count = bfd_canonicalize_reloc (input_bfd, | |
7602 | input_section, | |
7603 | reloc_vector, | |
7604 | symbols); | |
7605 | if (reloc_count < 0) | |
7606 | goto error_return; | |
7607 | ||
7608 | if (reloc_count > 0) | |
7609 | { | |
7610 | arelent **parent; | |
7611 | /* for mips */ | |
7612 | int gp_found; | |
7613 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
7614 | ||
7615 | { | |
7616 | struct bfd_hash_entry *h; | |
7617 | struct bfd_link_hash_entry *lh; | |
7618 | /* Skip all this stuff if we aren't mixing formats. */ | |
7619 | if (abfd && input_bfd | |
7620 | && abfd->xvec == input_bfd->xvec) | |
7621 | lh = 0; | |
7622 | else | |
7623 | { | |
7624 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); | |
7625 | lh = (struct bfd_link_hash_entry *) h; | |
7626 | } | |
7627 | lookup: | |
7628 | if (lh) | |
7629 | { | |
7630 | switch (lh->type) | |
7631 | { | |
7632 | case bfd_link_hash_undefined: | |
7633 | case bfd_link_hash_undefweak: | |
7634 | case bfd_link_hash_common: | |
7635 | gp_found = 0; | |
7636 | break; | |
7637 | case bfd_link_hash_defined: | |
7638 | case bfd_link_hash_defweak: | |
7639 | gp_found = 1; | |
7640 | gp = lh->u.def.value; | |
7641 | break; | |
7642 | case bfd_link_hash_indirect: | |
7643 | case bfd_link_hash_warning: | |
7644 | lh = lh->u.i.link; | |
7645 | /* @@FIXME ignoring warning for now */ | |
7646 | goto lookup; | |
7647 | case bfd_link_hash_new: | |
7648 | default: | |
7649 | abort (); | |
7650 | } | |
7651 | } | |
7652 | else | |
7653 | gp_found = 0; | |
7654 | } | |
7655 | /* end mips */ | |
7656 | for (parent = reloc_vector; *parent != (arelent *) NULL; | |
7657 | parent++) | |
7658 | { | |
7659 | char *error_message = (char *) NULL; | |
7660 | bfd_reloc_status_type r; | |
7661 | ||
7662 | /* Specific to MIPS: Deal with relocation types that require | |
7663 | knowing the gp of the output bfd. */ | |
7664 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
7665 | if (bfd_is_abs_section (sym->section) && abfd) | |
7666 | { | |
7667 | /* The special_function wouldn't get called anyways. */ | |
7668 | } | |
7669 | else if (!gp_found) | |
7670 | { | |
7671 | /* The gp isn't there; let the special function code | |
7672 | fall over on its own. */ | |
7673 | } | |
7674 | else if ((*parent)->howto->special_function | |
7675 | == _bfd_mips_elf_gprel16_reloc) | |
7676 | { | |
7677 | /* bypass special_function call */ | |
7678 | r = gprel16_with_gp (input_bfd, sym, *parent, input_section, | |
7679 | relocateable, (PTR) data, gp); | |
7680 | goto skip_bfd_perform_relocation; | |
7681 | } | |
7682 | /* end mips specific stuff */ | |
7683 | ||
7684 | r = bfd_perform_relocation (input_bfd, | |
7685 | *parent, | |
7686 | (PTR) data, | |
7687 | input_section, | |
7688 | relocateable ? abfd : (bfd *) NULL, | |
7689 | &error_message); | |
7690 | skip_bfd_perform_relocation: | |
7691 | ||
7692 | if (relocateable) | |
7693 | { | |
7694 | asection *os = input_section->output_section; | |
7695 | ||
7696 | /* A partial link, so keep the relocs */ | |
7697 | os->orelocation[os->reloc_count] = *parent; | |
7698 | os->reloc_count++; | |
7699 | } | |
7700 | ||
7701 | if (r != bfd_reloc_ok) | |
7702 | { | |
7703 | switch (r) | |
7704 | { | |
7705 | case bfd_reloc_undefined: | |
7706 | if (!((*link_info->callbacks->undefined_symbol) | |
7707 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
7708 | input_bfd, input_section, (*parent)->address))) | |
7709 | goto error_return; | |
7710 | break; | |
7711 | case bfd_reloc_dangerous: | |
7712 | BFD_ASSERT (error_message != (char *) NULL); | |
7713 | if (!((*link_info->callbacks->reloc_dangerous) | |
7714 | (link_info, error_message, input_bfd, input_section, | |
7715 | (*parent)->address))) | |
7716 | goto error_return; | |
7717 | break; | |
7718 | case bfd_reloc_overflow: | |
7719 | if (!((*link_info->callbacks->reloc_overflow) | |
7720 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
7721 | (*parent)->howto->name, (*parent)->addend, | |
7722 | input_bfd, input_section, (*parent)->address))) | |
7723 | goto error_return; | |
7724 | break; | |
7725 | case bfd_reloc_outofrange: | |
7726 | default: | |
7727 | abort (); | |
7728 | break; | |
7729 | } | |
7730 | ||
7731 | } | |
7732 | } | |
7733 | } | |
7734 | if (reloc_vector != NULL) | |
7735 | free (reloc_vector); | |
7736 | return data; | |
7737 | ||
7738 | error_return: | |
7739 | if (reloc_vector != NULL) | |
7740 | free (reloc_vector); | |
7741 | return NULL; | |
7742 | } | |
7743 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
7744 | elf32_mips_get_relocated_section_contents | |
7745 | \f | |
7746 | /* ECOFF swapping routines. These are used when dealing with the | |
7747 | .mdebug section, which is in the ECOFF debugging format. */ | |
7748 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = | |
7749 | { | |
7750 | /* Symbol table magic number. */ | |
7751 | magicSym, | |
7752 | /* Alignment of debugging information. E.g., 4. */ | |
7753 | 4, | |
7754 | /* Sizes of external symbolic information. */ | |
7755 | sizeof (struct hdr_ext), | |
7756 | sizeof (struct dnr_ext), | |
7757 | sizeof (struct pdr_ext), | |
7758 | sizeof (struct sym_ext), | |
7759 | sizeof (struct opt_ext), | |
7760 | sizeof (struct fdr_ext), | |
7761 | sizeof (struct rfd_ext), | |
7762 | sizeof (struct ext_ext), | |
7763 | /* Functions to swap in external symbolic data. */ | |
7764 | ecoff_swap_hdr_in, | |
7765 | ecoff_swap_dnr_in, | |
7766 | ecoff_swap_pdr_in, | |
7767 | ecoff_swap_sym_in, | |
7768 | ecoff_swap_opt_in, | |
7769 | ecoff_swap_fdr_in, | |
7770 | ecoff_swap_rfd_in, | |
7771 | ecoff_swap_ext_in, | |
7772 | _bfd_ecoff_swap_tir_in, | |
7773 | _bfd_ecoff_swap_rndx_in, | |
7774 | /* Functions to swap out external symbolic data. */ | |
7775 | ecoff_swap_hdr_out, | |
7776 | ecoff_swap_dnr_out, | |
7777 | ecoff_swap_pdr_out, | |
7778 | ecoff_swap_sym_out, | |
7779 | ecoff_swap_opt_out, | |
7780 | ecoff_swap_fdr_out, | |
7781 | ecoff_swap_rfd_out, | |
7782 | ecoff_swap_ext_out, | |
7783 | _bfd_ecoff_swap_tir_out, | |
7784 | _bfd_ecoff_swap_rndx_out, | |
7785 | /* Function to read in symbolic data. */ | |
7786 | _bfd_mips_elf_read_ecoff_info | |
7787 | }; | |
7788 | \f | |
7789 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec | |
7790 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
7791 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
7792 | #define TARGET_BIG_NAME "elf32-bigmips" | |
7793 | #define ELF_ARCH bfd_arch_mips | |
7794 | #define ELF_MACHINE_CODE EM_MIPS | |
7795 | ||
7796 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
7797 | a value of 0x1000, and we are compatible. */ | |
7798 | #define ELF_MAXPAGESIZE 0x1000 | |
7799 | ||
7800 | #define elf_backend_collect true | |
7801 | #define elf_backend_type_change_ok true | |
7802 | #define elf_backend_can_gc_sections true | |
3f830999 | 7803 | #define elf_info_to_howto mips_info_to_howto_rela |
252b5132 RH |
7804 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
7805 | #define elf_backend_sym_is_global mips_elf_sym_is_global | |
7806 | #define elf_backend_object_p mips_elf32_object_p | |
7807 | #define elf_backend_section_from_shdr mips_elf32_section_from_shdr | |
7808 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections | |
7809 | #define elf_backend_section_from_bfd_section \ | |
7810 | _bfd_mips_elf_section_from_bfd_section | |
7811 | #define elf_backend_section_processing mips_elf32_section_processing | |
7812 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing | |
7813 | #define elf_backend_additional_program_headers \ | |
7814 | mips_elf_additional_program_headers | |
7815 | #define elf_backend_modify_segment_map mips_elf_modify_segment_map | |
7816 | #define elf_backend_final_write_processing \ | |
7817 | _bfd_mips_elf_final_write_processing | |
7818 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap | |
7819 | ||
7820 | #define bfd_elf32_bfd_is_local_label_name \ | |
7821 | mips_elf_is_local_label_name | |
7822 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line | |
7823 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents | |
7824 | #define bfd_elf32_bfd_link_hash_table_create \ | |
7825 | mips_elf_link_hash_table_create | |
7826 | #define bfd_elf32_bfd_final_link mips_elf_final_link | |
7827 | #define bfd_elf32_bfd_copy_private_bfd_data \ | |
7828 | _bfd_mips_elf_copy_private_bfd_data | |
7829 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
7830 | _bfd_mips_elf_merge_private_bfd_data | |
7831 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
7832 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
7833 | _bfd_mips_elf_print_private_bfd_data | |
7834 | #define elf_backend_add_symbol_hook mips_elf_add_symbol_hook | |
7835 | #define elf_backend_create_dynamic_sections \ | |
7836 | mips_elf_create_dynamic_sections | |
7837 | #define elf_backend_check_relocs mips_elf_check_relocs | |
7838 | #define elf_backend_adjust_dynamic_symbol \ | |
7839 | mips_elf_adjust_dynamic_symbol | |
7840 | #define elf_backend_always_size_sections \ | |
7841 | mips_elf_always_size_sections | |
7842 | #define elf_backend_size_dynamic_sections \ | |
7843 | mips_elf_size_dynamic_sections | |
7844 | #define elf_backend_relocate_section mips_elf_relocate_section | |
7845 | #define elf_backend_link_output_symbol_hook \ | |
7846 | mips_elf_link_output_symbol_hook | |
7847 | #define elf_backend_finish_dynamic_symbol \ | |
7848 | mips_elf_finish_dynamic_symbol | |
7849 | #define elf_backend_finish_dynamic_sections \ | |
7850 | mips_elf_finish_dynamic_sections | |
7851 | #define elf_backend_gc_mark_hook mips_elf_gc_mark_hook | |
7852 | #define elf_backend_gc_sweep_hook mips_elf_gc_sweep_hook | |
7853 | ||
7854 | #define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO) | |
7855 | #define elf_backend_plt_header_size 0 | |
7856 | ||
7857 | #include "elf32-target.h" |