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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>. | |
103186c6 MM |
6 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. |
7 | <mark@codesourcery.com> | |
252b5132 RH |
8 | |
9 | This file is part of BFD, the Binary File Descriptor library. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
24 | ||
25 | /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly | |
26 | different MIPS ELF from other targets. This matters when linking. | |
27 | This file supports both, switching at runtime. */ | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "libbfd.h" | |
32 | #include "bfdlink.h" | |
33 | #include "genlink.h" | |
34 | #include "elf-bfd.h" | |
35 | #include "elf/mips.h" | |
36 | ||
37 | /* Get the ECOFF swapping routines. */ | |
38 | #include "coff/sym.h" | |
39 | #include "coff/symconst.h" | |
40 | #include "coff/internal.h" | |
41 | #include "coff/ecoff.h" | |
42 | #include "coff/mips.h" | |
43 | #define ECOFF_32 | |
44 | #include "ecoffswap.h" | |
45 | ||
7403cb63 MM |
46 | /* This structure is used to hold .got information when linking. It |
47 | is stored in the tdata field of the bfd_elf_section_data structure. */ | |
48 | ||
49 | struct mips_got_info | |
50 | { | |
51 | /* The global symbol in the GOT with the lowest index in the dynamic | |
52 | symbol table. */ | |
53 | struct elf_link_hash_entry *global_gotsym; | |
54 | /* The number of local .got entries. */ | |
55 | unsigned int local_gotno; | |
56 | /* The number of local .got entries we have used. */ | |
57 | unsigned int assigned_gotno; | |
58 | }; | |
59 | ||
60 | /* The MIPS ELF linker needs additional information for each symbol in | |
61 | the global hash table. */ | |
62 | ||
63 | struct mips_elf_link_hash_entry | |
64 | { | |
65 | struct elf_link_hash_entry root; | |
66 | ||
67 | /* External symbol information. */ | |
68 | EXTR esym; | |
69 | ||
a3c7651d MM |
70 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
71 | this symbol. */ | |
72 | unsigned int possibly_dynamic_relocs; | |
7403cb63 MM |
73 | |
74 | /* The index of the first dynamic relocation (in the .rel.dyn | |
75 | section) against this symbol. */ | |
76 | unsigned int min_dyn_reloc_index; | |
77 | ||
78 | /* If there is a stub that 32 bit functions should use to call this | |
79 | 16 bit function, this points to the section containing the stub. */ | |
80 | asection *fn_stub; | |
81 | ||
82 | /* Whether we need the fn_stub; this is set if this symbol appears | |
83 | in any relocs other than a 16 bit call. */ | |
84 | boolean need_fn_stub; | |
85 | ||
86 | /* If there is a stub that 16 bit functions should use to call this | |
87 | 32 bit function, this points to the section containing the stub. */ | |
88 | asection *call_stub; | |
89 | ||
90 | /* This is like the call_stub field, but it is used if the function | |
91 | being called returns a floating point value. */ | |
92 | asection *call_fp_stub; | |
93 | }; | |
94 | ||
252b5132 RH |
95 | static bfd_reloc_status_type mips32_64bit_reloc |
96 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
97 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
98 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
99 | static void mips_info_to_howto_rel | |
100 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
3f830999 MM |
101 | static void mips_info_to_howto_rela |
102 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
252b5132 RH |
103 | static void bfd_mips_elf32_swap_gptab_in |
104 | PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); | |
105 | static void bfd_mips_elf32_swap_gptab_out | |
106 | PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); | |
c6142e5d MM |
107 | static void bfd_mips_elf_swap_msym_in |
108 | PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *)); | |
109 | static void bfd_mips_elf_swap_msym_out | |
110 | PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *)); | |
252b5132 | 111 | static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); |
252b5132 RH |
112 | static boolean mips_elf_create_procedure_table |
113 | PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *, | |
114 | struct ecoff_debug_info *)); | |
252b5132 RH |
115 | static INLINE int elf_mips_isa PARAMS ((flagword)); |
116 | static INLINE int elf_mips_mach PARAMS ((flagword)); | |
103186c6 | 117 | static INLINE char* elf_mips_abi_name PARAMS ((bfd *)); |
252b5132 RH |
118 | static boolean mips_elf_is_local_label_name |
119 | PARAMS ((bfd *, const char *)); | |
120 | static struct bfd_hash_entry *mips_elf_link_hash_newfunc | |
121 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
252b5132 | 122 | static int gptab_compare PARAMS ((const void *, const void *)); |
252b5132 RH |
123 | static void mips_elf_relocate_hi16 |
124 | PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, | |
125 | bfd_vma)); | |
126 | static boolean mips_elf_relocate_got_local | |
127 | PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *, | |
128 | Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
129 | static void mips_elf_relocate_global_got | |
130 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
131 | static bfd_reloc_status_type mips16_jump_reloc | |
132 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
133 | static bfd_reloc_status_type mips16_gprel_reloc | |
134 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
135 | static boolean mips_elf_create_compact_rel_section |
136 | PARAMS ((bfd *, struct bfd_link_info *)); | |
137 | static boolean mips_elf_create_got_section | |
138 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 RH |
139 | static bfd_reloc_status_type mips_elf_final_gp |
140 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); | |
141 | static bfd_byte *elf32_mips_get_relocated_section_contents | |
142 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
143 | bfd_byte *, boolean, asymbol **)); | |
c6142e5d MM |
144 | static asection *mips_elf_create_msym_section |
145 | PARAMS ((bfd *)); | |
7403cb63 MM |
146 | static void mips_elf_irix6_finish_dynamic_symbol |
147 | PARAMS ((bfd *, const char *, Elf_Internal_Sym *)); | |
148 | static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int)); | |
149 | static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int)); | |
150 | static bfd_vma mips_elf_high PARAMS ((bfd_vma)); | |
151 | static bfd_vma mips_elf_higher PARAMS ((bfd_vma)); | |
152 | static bfd_vma mips_elf_highest PARAMS ((bfd_vma)); | |
153 | static bfd_vma mips_elf_global_got_index | |
154 | PARAMS ((bfd *, struct elf_link_hash_entry *)); | |
155 | static bfd_vma mips_elf_local_got_index | |
156 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma)); | |
157 | static bfd_vma mips_elf_got_offset_from_index | |
158 | PARAMS ((bfd *, bfd *, bfd_vma)); | |
159 | static boolean mips_elf_record_global_got_symbol | |
160 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *, | |
161 | struct mips_got_info *)); | |
162 | static bfd_vma mips_elf_got_page | |
163 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *)); | |
164 | static boolean mips_elf_next_lo16_addend | |
103186c6 | 165 | PARAMS ((const Elf_Internal_Rela *, const Elf_Internal_Rela *, bfd_vma *)); |
7403cb63 MM |
166 | static bfd_reloc_status_type mips_elf_calculate_relocation |
167 | PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *, | |
103186c6 MM |
168 | const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *, |
169 | Elf_Internal_Sym *, asection **, bfd_vma *, const char **)); | |
7403cb63 | 170 | static bfd_vma mips_elf_obtain_contents |
103186c6 | 171 | PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *)); |
7403cb63 | 172 | static void mips_elf_perform_relocation |
103186c6 | 173 | PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd_vma, |
7403cb63 MM |
174 | bfd *, bfd_byte *)); |
175 | static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *)); | |
176 | static boolean mips_elf_sort_hash_table_f | |
177 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
178 | static boolean mips_elf_sort_hash_table | |
179 | PARAMS ((struct bfd_link_info *)); | |
180 | static asection * mips_elf_got_section PARAMS ((bfd *)); | |
181 | static struct mips_got_info *mips_elf_got_info | |
182 | PARAMS ((bfd *, asection **)); | |
183 | static bfd_vma mips_elf_create_local_got_entry | |
184 | PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma)); | |
185 | static bfd_vma mips_elf_got16_entry | |
186 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma)); | |
187 | static unsigned int mips_elf_create_dynamic_relocation | |
103186c6 | 188 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
7403cb63 | 189 | long, bfd_vma, asection *)); |
103186c6 MM |
190 | static void mips_elf_allocate_dynamic_relocations |
191 | PARAMS ((bfd *, unsigned int)); | |
252b5132 | 192 | |
a94a7c1c | 193 | /* The level of IRIX compatibility we're striving for. */ |
252b5132 | 194 | |
a94a7c1c MM |
195 | typedef enum { |
196 | ict_none, | |
197 | ict_irix5, | |
198 | ict_irix6 | |
199 | } irix_compat_t; | |
200 | ||
201 | /* Nonzero if ABFD is using the N32 ABI. */ | |
202 | ||
203 | #define ABI_N32_P(abfd) \ | |
204 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
205 | ||
5e38c3b8 MM |
206 | /* Nonzero if ABFD is using the 64-bit ABI. FIXME: This is never |
207 | true, yet. */ | |
208 | #define ABI_64_P(abfd) \ | |
209 | ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0) | |
210 | ||
a94a7c1c MM |
211 | /* What version of Irix we are trying to be compatible with. FIXME: |
212 | At the moment, we never generate "normal" MIPS ELF ABI executables; | |
213 | we always use some version of Irix. */ | |
214 | ||
215 | #define IRIX_COMPAT(abfd) \ | |
5e38c3b8 | 216 | ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5) |
a94a7c1c MM |
217 | |
218 | /* Whether we are trying to be compatible with IRIX at all. */ | |
219 | ||
220 | #define SGI_COMPAT(abfd) \ | |
221 | (IRIX_COMPAT (abfd) != ict_none) | |
252b5132 | 222 | |
c6142e5d MM |
223 | /* The name of the msym section. */ |
224 | #define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym" | |
225 | ||
303f629d MM |
226 | /* The name of the srdata section. */ |
227 | #define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata" | |
228 | ||
229 | /* The name of the options section. */ | |
230 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
231 | (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options") | |
232 | ||
233 | /* The name of the stub section. */ | |
234 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) \ | |
235 | (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub") | |
236 | ||
103186c6 MM |
237 | /* The name of the dynamic relocation section. */ |
238 | #define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn" | |
239 | ||
240 | /* The size of an external REL relocation. */ | |
241 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
242 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
243 | ||
244 | /* The size of an external dynamic table entry. */ | |
245 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
246 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
247 | ||
248 | /* The size of a GOT entry. */ | |
249 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
250 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
251 | ||
252 | /* The size of a symbol-table entry. */ | |
253 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
254 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
255 | ||
256 | /* The default alignment for sections, as a power of two. */ | |
257 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
258 | (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2) | |
259 | ||
260 | /* Get word-sized data. */ | |
261 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
262 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
263 | ||
264 | /* Put out word-sized data. */ | |
265 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
266 | (ABI_64_P (abfd) \ | |
267 | ? bfd_put_64 (abfd, val, ptr) \ | |
268 | : bfd_put_32 (abfd, val, ptr)) | |
269 | ||
270 | /* Add a dynamic symbol table-entry. */ | |
9ebbd33e | 271 | #ifdef BFD64 |
103186c6 MM |
272 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
273 | (ABI_64_P (elf_hash_table (info)->dynobj) \ | |
274 | ? bfd_elf64_add_dynamic_entry (info, tag, val) \ | |
275 | : bfd_elf32_add_dynamic_entry (info, tag, val)) | |
9ebbd33e MM |
276 | #else |
277 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ | |
278 | (ABI_64_P (elf_hash_table (info)->dynobj) \ | |
e049a0de ILT |
279 | ? (abort (), false) \ |
280 | : bfd_elf32_add_dynamic_entry (info, tag, val)) | |
9ebbd33e | 281 | #endif |
103186c6 | 282 | |
252b5132 RH |
283 | /* The number of local .got entries we reserve. */ |
284 | #define MIPS_RESERVED_GOTNO (2) | |
285 | ||
286 | /* Instructions which appear in a stub. For some reason the stub is | |
287 | slightly different on an SGI system. */ | |
288 | #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000) | |
103186c6 MM |
289 | #define STUB_LW(abfd) \ |
290 | (SGI_COMPAT (abfd) \ | |
291 | ? (ABI_64_P (abfd) \ | |
292 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
293 | : 0x8f998010) /* lw t9,0x8010(gp) */ \ | |
252b5132 RH |
294 | : 0x8f998000) /* lw t9,0x8000(gp) */ |
295 | #define STUB_MOVE 0x03e07825 /* move t7,ra */ | |
296 | #define STUB_JALR 0x0320f809 /* jal t9 */ | |
297 | #define STUB_LI16 0x34180000 /* ori t8,zero,0 */ | |
298 | #define MIPS_FUNCTION_STUB_SIZE (16) | |
299 | ||
300 | #if 0 | |
301 | /* We no longer try to identify particular sections for the .dynsym | |
302 | section. When we do, we wind up crashing if there are other random | |
303 | sections with relocations. */ | |
304 | ||
305 | /* Names of sections which appear in the .dynsym section in an Irix 5 | |
306 | executable. */ | |
307 | ||
308 | static const char * const mips_elf_dynsym_sec_names[] = | |
309 | { | |
310 | ".text", | |
311 | ".init", | |
312 | ".fini", | |
313 | ".data", | |
314 | ".rodata", | |
315 | ".sdata", | |
316 | ".sbss", | |
317 | ".bss", | |
318 | NULL | |
319 | }; | |
320 | ||
321 | #define SIZEOF_MIPS_DYNSYM_SECNAMES \ | |
322 | (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) | |
323 | ||
324 | /* The number of entries in mips_elf_dynsym_sec_names which go in the | |
325 | text segment. */ | |
326 | ||
327 | #define MIPS_TEXT_DYNSYM_SECNO (3) | |
328 | ||
329 | #endif /* 0 */ | |
330 | ||
331 | /* The names of the runtime procedure table symbols used on Irix 5. */ | |
332 | ||
333 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
334 | { | |
335 | "_procedure_table", | |
336 | "_procedure_string_table", | |
337 | "_procedure_table_size", | |
338 | NULL | |
339 | }; | |
340 | ||
341 | /* These structures are used to generate the .compact_rel section on | |
342 | Irix 5. */ | |
343 | ||
344 | typedef struct | |
345 | { | |
346 | unsigned long id1; /* Always one? */ | |
347 | unsigned long num; /* Number of compact relocation entries. */ | |
348 | unsigned long id2; /* Always two? */ | |
349 | unsigned long offset; /* The file offset of the first relocation. */ | |
350 | unsigned long reserved0; /* Zero? */ | |
351 | unsigned long reserved1; /* Zero? */ | |
352 | } Elf32_compact_rel; | |
353 | ||
354 | typedef struct | |
355 | { | |
356 | bfd_byte id1[4]; | |
357 | bfd_byte num[4]; | |
358 | bfd_byte id2[4]; | |
359 | bfd_byte offset[4]; | |
360 | bfd_byte reserved0[4]; | |
361 | bfd_byte reserved1[4]; | |
362 | } Elf32_External_compact_rel; | |
363 | ||
364 | typedef struct | |
365 | { | |
366 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
367 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
368 | unsigned int dist2to : 8; | |
369 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
370 | unsigned long konst; /* KONST field. See below. */ | |
371 | unsigned long vaddr; /* VADDR to be relocated. */ | |
372 | } Elf32_crinfo; | |
373 | ||
374 | typedef struct | |
375 | { | |
376 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
377 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
378 | unsigned int dist2to : 8; | |
379 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
380 | unsigned long konst; /* KONST field. See below. */ | |
381 | } Elf32_crinfo2; | |
382 | ||
383 | typedef struct | |
384 | { | |
385 | bfd_byte info[4]; | |
386 | bfd_byte konst[4]; | |
387 | bfd_byte vaddr[4]; | |
388 | } Elf32_External_crinfo; | |
389 | ||
390 | typedef struct | |
391 | { | |
392 | bfd_byte info[4]; | |
393 | bfd_byte konst[4]; | |
394 | } Elf32_External_crinfo2; | |
395 | ||
396 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
397 | ||
398 | #define CRINFO_CTYPE (0x1) | |
399 | #define CRINFO_CTYPE_SH (31) | |
400 | #define CRINFO_RTYPE (0xf) | |
401 | #define CRINFO_RTYPE_SH (27) | |
402 | #define CRINFO_DIST2TO (0xff) | |
403 | #define CRINFO_DIST2TO_SH (19) | |
404 | #define CRINFO_RELVADDR (0x7ffff) | |
405 | #define CRINFO_RELVADDR_SH (0) | |
406 | ||
407 | /* A compact relocation info has long (3 words) or short (2 words) | |
408 | formats. A short format doesn't have VADDR field and relvaddr | |
409 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
410 | #define CRF_MIPS_LONG 1 | |
411 | #define CRF_MIPS_SHORT 0 | |
412 | ||
413 | /* There are 4 types of compact relocation at least. The value KONST | |
414 | has different meaning for each type: | |
415 | ||
416 | (type) (konst) | |
417 | CT_MIPS_REL32 Address in data | |
418 | CT_MIPS_WORD Address in word (XXX) | |
419 | CT_MIPS_GPHI_LO GP - vaddr | |
420 | CT_MIPS_JMPAD Address to jump | |
421 | */ | |
422 | ||
423 | #define CRT_MIPS_REL32 0xa | |
424 | #define CRT_MIPS_WORD 0xb | |
425 | #define CRT_MIPS_GPHI_LO 0xc | |
426 | #define CRT_MIPS_JMPAD 0xd | |
427 | ||
428 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
429 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
430 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
431 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
432 | ||
433 | static void bfd_elf32_swap_compact_rel_out | |
434 | PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *)); | |
435 | static void bfd_elf32_swap_crinfo_out | |
436 | PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *)); | |
437 | ||
438 | #define USE_REL 1 /* MIPS uses REL relocations instead of RELA */ | |
439 | ||
3f830999 MM |
440 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
441 | from smaller values. Start with zero, widen, *then* decrement. */ | |
442 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
443 | ||
252b5132 RH |
444 | static reloc_howto_type elf_mips_howto_table[] = |
445 | { | |
446 | /* No relocation. */ | |
447 | HOWTO (R_MIPS_NONE, /* type */ | |
448 | 0, /* rightshift */ | |
449 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
450 | 0, /* bitsize */ | |
451 | false, /* pc_relative */ | |
452 | 0, /* bitpos */ | |
453 | complain_overflow_dont, /* complain_on_overflow */ | |
454 | bfd_elf_generic_reloc, /* special_function */ | |
455 | "R_MIPS_NONE", /* name */ | |
456 | false, /* partial_inplace */ | |
457 | 0, /* src_mask */ | |
458 | 0, /* dst_mask */ | |
459 | false), /* pcrel_offset */ | |
460 | ||
461 | /* 16 bit relocation. */ | |
462 | HOWTO (R_MIPS_16, /* type */ | |
463 | 0, /* rightshift */ | |
464 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
465 | 16, /* bitsize */ | |
466 | false, /* pc_relative */ | |
467 | 0, /* bitpos */ | |
468 | complain_overflow_bitfield, /* complain_on_overflow */ | |
469 | bfd_elf_generic_reloc, /* special_function */ | |
470 | "R_MIPS_16", /* name */ | |
471 | true, /* partial_inplace */ | |
472 | 0xffff, /* src_mask */ | |
473 | 0xffff, /* dst_mask */ | |
474 | false), /* pcrel_offset */ | |
475 | ||
476 | /* 32 bit relocation. */ | |
477 | HOWTO (R_MIPS_32, /* type */ | |
478 | 0, /* rightshift */ | |
479 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
480 | 32, /* bitsize */ | |
481 | false, /* pc_relative */ | |
482 | 0, /* bitpos */ | |
483 | complain_overflow_bitfield, /* complain_on_overflow */ | |
484 | bfd_elf_generic_reloc, /* special_function */ | |
485 | "R_MIPS_32", /* name */ | |
486 | true, /* partial_inplace */ | |
487 | 0xffffffff, /* src_mask */ | |
488 | 0xffffffff, /* dst_mask */ | |
489 | false), /* pcrel_offset */ | |
490 | ||
491 | /* 32 bit symbol relative relocation. */ | |
492 | HOWTO (R_MIPS_REL32, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 32, /* bitsize */ | |
496 | false, /* pc_relative */ | |
497 | 0, /* bitpos */ | |
498 | complain_overflow_bitfield, /* complain_on_overflow */ | |
499 | bfd_elf_generic_reloc, /* special_function */ | |
500 | "R_MIPS_REL32", /* name */ | |
501 | true, /* partial_inplace */ | |
502 | 0xffffffff, /* src_mask */ | |
503 | 0xffffffff, /* dst_mask */ | |
504 | false), /* pcrel_offset */ | |
505 | ||
506 | /* 26 bit branch address. */ | |
507 | HOWTO (R_MIPS_26, /* type */ | |
508 | 2, /* rightshift */ | |
509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
510 | 26, /* bitsize */ | |
511 | false, /* pc_relative */ | |
512 | 0, /* bitpos */ | |
513 | complain_overflow_dont, /* complain_on_overflow */ | |
514 | /* This needs complex overflow | |
515 | detection, because the upper four | |
516 | bits must match the PC. */ | |
517 | bfd_elf_generic_reloc, /* special_function */ | |
518 | "R_MIPS_26", /* name */ | |
519 | true, /* partial_inplace */ | |
520 | 0x3ffffff, /* src_mask */ | |
521 | 0x3ffffff, /* dst_mask */ | |
522 | false), /* pcrel_offset */ | |
523 | ||
524 | /* High 16 bits of symbol value. */ | |
525 | HOWTO (R_MIPS_HI16, /* type */ | |
526 | 0, /* rightshift */ | |
527 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
528 | 16, /* bitsize */ | |
529 | false, /* pc_relative */ | |
530 | 0, /* bitpos */ | |
531 | complain_overflow_dont, /* complain_on_overflow */ | |
532 | _bfd_mips_elf_hi16_reloc, /* special_function */ | |
533 | "R_MIPS_HI16", /* name */ | |
534 | true, /* partial_inplace */ | |
535 | 0xffff, /* src_mask */ | |
536 | 0xffff, /* dst_mask */ | |
537 | false), /* pcrel_offset */ | |
538 | ||
539 | /* Low 16 bits of symbol value. */ | |
540 | HOWTO (R_MIPS_LO16, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 16, /* bitsize */ | |
544 | false, /* pc_relative */ | |
545 | 0, /* bitpos */ | |
546 | complain_overflow_dont, /* complain_on_overflow */ | |
547 | _bfd_mips_elf_lo16_reloc, /* special_function */ | |
548 | "R_MIPS_LO16", /* name */ | |
549 | true, /* partial_inplace */ | |
550 | 0xffff, /* src_mask */ | |
551 | 0xffff, /* dst_mask */ | |
552 | false), /* pcrel_offset */ | |
553 | ||
554 | /* GP relative reference. */ | |
555 | HOWTO (R_MIPS_GPREL16, /* type */ | |
556 | 0, /* rightshift */ | |
557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
558 | 16, /* bitsize */ | |
559 | false, /* pc_relative */ | |
560 | 0, /* bitpos */ | |
561 | complain_overflow_signed, /* complain_on_overflow */ | |
562 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
563 | "R_MIPS_GPREL16", /* name */ | |
564 | true, /* partial_inplace */ | |
565 | 0xffff, /* src_mask */ | |
566 | 0xffff, /* dst_mask */ | |
567 | false), /* pcrel_offset */ | |
568 | ||
569 | /* Reference to literal section. */ | |
570 | HOWTO (R_MIPS_LITERAL, /* type */ | |
571 | 0, /* rightshift */ | |
572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 16, /* bitsize */ | |
574 | false, /* pc_relative */ | |
575 | 0, /* bitpos */ | |
576 | complain_overflow_signed, /* complain_on_overflow */ | |
577 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
578 | "R_MIPS_LITERAL", /* name */ | |
579 | true, /* partial_inplace */ | |
580 | 0xffff, /* src_mask */ | |
581 | 0xffff, /* dst_mask */ | |
582 | false), /* pcrel_offset */ | |
583 | ||
584 | /* Reference to global offset table. */ | |
585 | HOWTO (R_MIPS_GOT16, /* type */ | |
586 | 0, /* rightshift */ | |
587 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
588 | 16, /* bitsize */ | |
589 | false, /* pc_relative */ | |
590 | 0, /* bitpos */ | |
591 | complain_overflow_signed, /* complain_on_overflow */ | |
592 | _bfd_mips_elf_got16_reloc, /* special_function */ | |
593 | "R_MIPS_GOT16", /* name */ | |
594 | false, /* partial_inplace */ | |
595 | 0, /* src_mask */ | |
596 | 0xffff, /* dst_mask */ | |
597 | false), /* pcrel_offset */ | |
598 | ||
599 | /* 16 bit PC relative reference. */ | |
600 | HOWTO (R_MIPS_PC16, /* type */ | |
601 | 0, /* rightshift */ | |
602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
603 | 16, /* bitsize */ | |
604 | true, /* pc_relative */ | |
605 | 0, /* bitpos */ | |
606 | complain_overflow_signed, /* complain_on_overflow */ | |
607 | bfd_elf_generic_reloc, /* special_function */ | |
608 | "R_MIPS_PC16", /* name */ | |
609 | true, /* partial_inplace */ | |
610 | 0xffff, /* src_mask */ | |
611 | 0xffff, /* dst_mask */ | |
612 | false), /* pcrel_offset */ | |
613 | ||
614 | /* 16 bit call through global offset table. */ | |
252b5132 RH |
615 | HOWTO (R_MIPS_CALL16, /* type */ |
616 | 0, /* rightshift */ | |
617 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
618 | 16, /* bitsize */ | |
619 | false, /* pc_relative */ | |
620 | 0, /* bitpos */ | |
621 | complain_overflow_signed, /* complain_on_overflow */ | |
622 | bfd_elf_generic_reloc, /* special_function */ | |
623 | "R_MIPS_CALL16", /* name */ | |
624 | false, /* partial_inplace */ | |
625 | 0, /* src_mask */ | |
626 | 0xffff, /* dst_mask */ | |
627 | false), /* pcrel_offset */ | |
628 | ||
629 | /* 32 bit GP relative reference. */ | |
630 | HOWTO (R_MIPS_GPREL32, /* type */ | |
631 | 0, /* rightshift */ | |
632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
633 | 32, /* bitsize */ | |
634 | false, /* pc_relative */ | |
635 | 0, /* bitpos */ | |
636 | complain_overflow_bitfield, /* complain_on_overflow */ | |
637 | _bfd_mips_elf_gprel32_reloc, /* special_function */ | |
638 | "R_MIPS_GPREL32", /* name */ | |
639 | true, /* partial_inplace */ | |
640 | 0xffffffff, /* src_mask */ | |
641 | 0xffffffff, /* dst_mask */ | |
642 | false), /* pcrel_offset */ | |
643 | ||
644 | /* The remaining relocs are defined on Irix 5, although they are | |
645 | not defined by the ABI. */ | |
5f771d47 ILT |
646 | EMPTY_HOWTO (13), |
647 | EMPTY_HOWTO (14), | |
648 | EMPTY_HOWTO (15), | |
252b5132 RH |
649 | |
650 | /* A 5 bit shift field. */ | |
651 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 5, /* bitsize */ | |
655 | false, /* pc_relative */ | |
656 | 6, /* bitpos */ | |
657 | complain_overflow_bitfield, /* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
659 | "R_MIPS_SHIFT5", /* name */ | |
660 | true, /* partial_inplace */ | |
661 | 0x000007c0, /* src_mask */ | |
662 | 0x000007c0, /* dst_mask */ | |
663 | false), /* pcrel_offset */ | |
664 | ||
665 | /* A 6 bit shift field. */ | |
666 | /* FIXME: This is not handled correctly; a special function is | |
667 | needed to put the most significant bit in the right place. */ | |
668 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
669 | 0, /* rightshift */ | |
670 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
671 | 6, /* bitsize */ | |
672 | false, /* pc_relative */ | |
673 | 6, /* bitpos */ | |
674 | complain_overflow_bitfield, /* complain_on_overflow */ | |
675 | bfd_elf_generic_reloc, /* special_function */ | |
676 | "R_MIPS_SHIFT6", /* name */ | |
677 | true, /* partial_inplace */ | |
678 | 0x000007c4, /* src_mask */ | |
679 | 0x000007c4, /* dst_mask */ | |
680 | false), /* pcrel_offset */ | |
681 | ||
a3c7651d | 682 | /* A 64 bit relocation. */ |
252b5132 RH |
683 | HOWTO (R_MIPS_64, /* type */ |
684 | 0, /* rightshift */ | |
a3c7651d MM |
685 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
686 | 64, /* bitsize */ | |
252b5132 RH |
687 | false, /* pc_relative */ |
688 | 0, /* bitpos */ | |
689 | complain_overflow_bitfield, /* complain_on_overflow */ | |
690 | mips32_64bit_reloc, /* special_function */ | |
691 | "R_MIPS_64", /* name */ | |
692 | true, /* partial_inplace */ | |
a3c7651d MM |
693 | MINUS_ONE, /* src_mask */ |
694 | MINUS_ONE, /* dst_mask */ | |
252b5132 RH |
695 | false), /* pcrel_offset */ |
696 | ||
697 | /* Displacement in the global offset table. */ | |
252b5132 RH |
698 | HOWTO (R_MIPS_GOT_DISP, /* type */ |
699 | 0, /* rightshift */ | |
700 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
701 | 16, /* bitsize */ | |
702 | false, /* pc_relative */ | |
703 | 0, /* bitpos */ | |
704 | complain_overflow_bitfield, /* complain_on_overflow */ | |
705 | bfd_elf_generic_reloc, /* special_function */ | |
706 | "R_MIPS_GOT_DISP", /* name */ | |
707 | true, /* partial_inplace */ | |
708 | 0x0000ffff, /* src_mask */ | |
709 | 0x0000ffff, /* dst_mask */ | |
710 | false), /* pcrel_offset */ | |
711 | ||
712 | /* Displacement to page pointer in the global offset table. */ | |
252b5132 RH |
713 | HOWTO (R_MIPS_GOT_PAGE, /* type */ |
714 | 0, /* rightshift */ | |
715 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
716 | 16, /* bitsize */ | |
717 | false, /* pc_relative */ | |
718 | 0, /* bitpos */ | |
719 | complain_overflow_bitfield, /* complain_on_overflow */ | |
720 | bfd_elf_generic_reloc, /* special_function */ | |
721 | "R_MIPS_GOT_PAGE", /* name */ | |
722 | true, /* partial_inplace */ | |
723 | 0x0000ffff, /* src_mask */ | |
724 | 0x0000ffff, /* dst_mask */ | |
725 | false), /* pcrel_offset */ | |
726 | ||
727 | /* Offset from page pointer in the global offset table. */ | |
252b5132 RH |
728 | HOWTO (R_MIPS_GOT_OFST, /* type */ |
729 | 0, /* rightshift */ | |
730 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 16, /* bitsize */ | |
732 | false, /* pc_relative */ | |
733 | 0, /* bitpos */ | |
734 | complain_overflow_bitfield, /* complain_on_overflow */ | |
735 | bfd_elf_generic_reloc, /* special_function */ | |
736 | "R_MIPS_GOT_OFST", /* name */ | |
737 | true, /* partial_inplace */ | |
738 | 0x0000ffff, /* src_mask */ | |
739 | 0x0000ffff, /* dst_mask */ | |
740 | false), /* pcrel_offset */ | |
741 | ||
742 | /* High 16 bits of displacement in global offset table. */ | |
252b5132 RH |
743 | HOWTO (R_MIPS_GOT_HI16, /* type */ |
744 | 0, /* rightshift */ | |
745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 16, /* bitsize */ | |
747 | false, /* pc_relative */ | |
748 | 0, /* bitpos */ | |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
750 | bfd_elf_generic_reloc, /* special_function */ | |
751 | "R_MIPS_GOT_HI16", /* name */ | |
752 | true, /* partial_inplace */ | |
753 | 0x0000ffff, /* src_mask */ | |
754 | 0x0000ffff, /* dst_mask */ | |
755 | false), /* pcrel_offset */ | |
756 | ||
757 | /* Low 16 bits of displacement in global offset table. */ | |
252b5132 RH |
758 | HOWTO (R_MIPS_GOT_LO16, /* type */ |
759 | 0, /* rightshift */ | |
760 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
761 | 16, /* bitsize */ | |
762 | false, /* pc_relative */ | |
763 | 0, /* bitpos */ | |
764 | complain_overflow_dont, /* complain_on_overflow */ | |
765 | bfd_elf_generic_reloc, /* special_function */ | |
766 | "R_MIPS_GOT_LO16", /* name */ | |
767 | true, /* partial_inplace */ | |
768 | 0x0000ffff, /* src_mask */ | |
769 | 0x0000ffff, /* dst_mask */ | |
770 | false), /* pcrel_offset */ | |
771 | ||
3f830999 | 772 | /* 64 bit subtraction. Used in the N32 ABI. */ |
3f830999 MM |
773 | HOWTO (R_MIPS_SUB, /* type */ |
774 | 0, /* rightshift */ | |
775 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
776 | 64, /* bitsize */ | |
777 | false, /* pc_relative */ | |
778 | 0, /* bitpos */ | |
779 | complain_overflow_bitfield, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
781 | "R_MIPS_SUB", /* name */ | |
782 | true, /* partial_inplace */ | |
783 | MINUS_ONE, /* src_mask */ | |
784 | MINUS_ONE, /* dst_mask */ | |
785 | false), /* pcrel_offset */ | |
252b5132 RH |
786 | |
787 | /* Used to cause the linker to insert and delete instructions? */ | |
5f771d47 ILT |
788 | EMPTY_HOWTO (R_MIPS_INSERT_A), |
789 | EMPTY_HOWTO (R_MIPS_INSERT_B), | |
790 | EMPTY_HOWTO (R_MIPS_DELETE), | |
252b5132 | 791 | |
103186c6 MM |
792 | /* Get the higher value of a 64 bit addend. */ |
793 | HOWTO (R_MIPS_HIGHER, /* type */ | |
794 | 0, /* rightshift */ | |
795 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 16, /* bitsize */ | |
797 | false, /* pc_relative */ | |
798 | 0, /* bitpos */ | |
799 | complain_overflow_dont, /* complain_on_overflow */ | |
800 | bfd_elf_generic_reloc, /* special_function */ | |
801 | "R_MIPS_HIGHER", /* name */ | |
802 | true, /* partial_inplace */ | |
803 | 0, /* src_mask */ | |
804 | 0xffff, /* dst_mask */ | |
805 | false), /* pcrel_offset */ | |
806 | ||
807 | /* Get the highest value of a 64 bit addend. */ | |
808 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
809 | 0, /* rightshift */ | |
810 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
811 | 16, /* bitsize */ | |
812 | false, /* pc_relative */ | |
813 | 0, /* bitpos */ | |
814 | complain_overflow_dont, /* complain_on_overflow */ | |
815 | bfd_elf_generic_reloc, /* special_function */ | |
816 | "R_MIPS_HIGHEST", /* name */ | |
817 | true, /* partial_inplace */ | |
818 | 0, /* src_mask */ | |
819 | 0xffff, /* dst_mask */ | |
820 | false), /* pcrel_offset */ | |
252b5132 RH |
821 | |
822 | /* High 16 bits of displacement in global offset table. */ | |
252b5132 RH |
823 | HOWTO (R_MIPS_CALL_HI16, /* type */ |
824 | 0, /* rightshift */ | |
825 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
826 | 16, /* bitsize */ | |
827 | false, /* pc_relative */ | |
828 | 0, /* bitpos */ | |
829 | complain_overflow_dont, /* complain_on_overflow */ | |
830 | bfd_elf_generic_reloc, /* special_function */ | |
831 | "R_MIPS_CALL_HI16", /* name */ | |
832 | true, /* partial_inplace */ | |
833 | 0x0000ffff, /* src_mask */ | |
834 | 0x0000ffff, /* dst_mask */ | |
835 | false), /* pcrel_offset */ | |
836 | ||
837 | /* Low 16 bits of displacement in global offset table. */ | |
252b5132 RH |
838 | HOWTO (R_MIPS_CALL_LO16, /* type */ |
839 | 0, /* rightshift */ | |
840 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
841 | 16, /* bitsize */ | |
842 | false, /* pc_relative */ | |
843 | 0, /* bitpos */ | |
844 | complain_overflow_dont, /* complain_on_overflow */ | |
845 | bfd_elf_generic_reloc, /* special_function */ | |
846 | "R_MIPS_CALL_LO16", /* name */ | |
847 | true, /* partial_inplace */ | |
848 | 0x0000ffff, /* src_mask */ | |
849 | 0x0000ffff, /* dst_mask */ | |
850 | false), /* pcrel_offset */ | |
851 | ||
7403cb63 MM |
852 | /* Section displacement. */ |
853 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
854 | 0, /* rightshift */ | |
855 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
856 | 32, /* bitsize */ | |
857 | false, /* pc_relative */ | |
858 | 0, /* bitpos */ | |
859 | complain_overflow_dont, /* complain_on_overflow */ | |
860 | bfd_elf_generic_reloc, /* special_function */ | |
861 | "R_MIPS_SCN_DISP", /* name */ | |
862 | false, /* partial_inplace */ | |
863 | 0xffffffff, /* src_mask */ | |
864 | 0xffffffff, /* dst_mask */ | |
865 | false), /* pcrel_offset */ | |
866 | ||
5f771d47 ILT |
867 | EMPTY_HOWTO (R_MIPS_REL16), |
868 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
869 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
870 | EMPTY_HOWTO (R_MIPS_RELGOT), | |
d2905643 MM |
871 | |
872 | /* Protected jump conversion. This is an optimization hint. No | |
873 | relocation is required for correctness. */ | |
874 | HOWTO (R_MIPS_JALR, /* type */ | |
875 | 0, /* rightshift */ | |
876 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
877 | 0, /* bitsize */ | |
878 | false, /* pc_relative */ | |
879 | 0, /* bitpos */ | |
880 | complain_overflow_dont, /* complain_on_overflow */ | |
881 | bfd_elf_generic_reloc, /* special_function */ | |
882 | "R_MIPS_JALR", /* name */ | |
883 | false, /* partial_inplace */ | |
884 | 0x00000000, /* src_mask */ | |
885 | 0x00000000, /* dst_mask */ | |
886 | false), /* pcrel_offset */ | |
252b5132 RH |
887 | }; |
888 | ||
889 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This | |
890 | is a hack to make the linker think that we need 64 bit values. */ | |
891 | static reloc_howto_type elf_mips_ctor64_howto = | |
892 | HOWTO (R_MIPS_64, /* type */ | |
893 | 0, /* rightshift */ | |
894 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
895 | 32, /* bitsize */ | |
896 | false, /* pc_relative */ | |
897 | 0, /* bitpos */ | |
898 | complain_overflow_signed, /* complain_on_overflow */ | |
899 | mips32_64bit_reloc, /* special_function */ | |
900 | "R_MIPS_64", /* name */ | |
901 | true, /* partial_inplace */ | |
902 | 0xffffffff, /* src_mask */ | |
903 | 0xffffffff, /* dst_mask */ | |
904 | false); /* pcrel_offset */ | |
905 | ||
906 | /* The reloc used for the mips16 jump instruction. */ | |
907 | static reloc_howto_type elf_mips16_jump_howto = | |
908 | HOWTO (R_MIPS16_26, /* type */ | |
909 | 2, /* rightshift */ | |
910 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
911 | 26, /* bitsize */ | |
912 | false, /* pc_relative */ | |
913 | 0, /* bitpos */ | |
914 | complain_overflow_dont, /* complain_on_overflow */ | |
915 | /* This needs complex overflow | |
916 | detection, because the upper four | |
917 | bits must match the PC. */ | |
918 | mips16_jump_reloc, /* special_function */ | |
919 | "R_MIPS16_26", /* name */ | |
920 | true, /* partial_inplace */ | |
921 | 0x3ffffff, /* src_mask */ | |
922 | 0x3ffffff, /* dst_mask */ | |
923 | false); /* pcrel_offset */ | |
924 | ||
925 | /* The reloc used for the mips16 gprel instruction. The src_mask and | |
926 | dsk_mask for this howto do not reflect the actual instruction, in | |
927 | which the value is not contiguous; the masks are for the | |
928 | convenience of the relocate_section routine. */ | |
929 | static reloc_howto_type elf_mips16_gprel_howto = | |
930 | HOWTO (R_MIPS16_GPREL, /* type */ | |
931 | 0, /* rightshift */ | |
932 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
933 | 16, /* bitsize */ | |
934 | false, /* pc_relative */ | |
935 | 0, /* bitpos */ | |
936 | complain_overflow_signed, /* complain_on_overflow */ | |
937 | mips16_gprel_reloc, /* special_function */ | |
938 | "R_MIPS16_GPREL", /* name */ | |
939 | true, /* partial_inplace */ | |
940 | 0xffff, /* src_mask */ | |
941 | 0xffff, /* dst_mask */ | |
942 | false); /* pcrel_offset */ | |
943 | ||
944 | ||
945 | /* GNU extension to record C++ vtable hierarchy */ | |
946 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = | |
947 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ | |
948 | 0, /* rightshift */ | |
949 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
950 | 0, /* bitsize */ | |
951 | false, /* pc_relative */ | |
952 | 0, /* bitpos */ | |
953 | complain_overflow_dont, /* complain_on_overflow */ | |
954 | NULL, /* special_function */ | |
955 | "R_MIPS_GNU_VTINHERIT", /* name */ | |
956 | false, /* partial_inplace */ | |
957 | 0, /* src_mask */ | |
958 | 0, /* dst_mask */ | |
959 | false); /* pcrel_offset */ | |
960 | ||
961 | /* GNU extension to record C++ vtable member usage */ | |
962 | static reloc_howto_type elf_mips_gnu_vtentry_howto = | |
963 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ | |
964 | 0, /* rightshift */ | |
965 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
966 | 0, /* bitsize */ | |
967 | false, /* pc_relative */ | |
968 | 0, /* bitpos */ | |
969 | complain_overflow_dont, /* complain_on_overflow */ | |
970 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
971 | "R_MIPS_GNU_VTENTRY", /* name */ | |
972 | false, /* partial_inplace */ | |
973 | 0, /* src_mask */ | |
974 | 0, /* dst_mask */ | |
975 | false); /* pcrel_offset */ | |
976 | ||
977 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination | |
978 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to | |
979 | the HI16. Here we just save the information we need; we do the | |
980 | actual relocation when we see the LO16. MIPS ELF requires that the | |
981 | LO16 immediately follow the HI16. As a GNU extension, we permit an | |
982 | arbitrary number of HI16 relocs to be associated with a single LO16 | |
983 | reloc. This extension permits gcc to output the HI and LO relocs | |
984 | itself. */ | |
985 | ||
986 | struct mips_hi16 | |
987 | { | |
988 | struct mips_hi16 *next; | |
989 | bfd_byte *addr; | |
990 | bfd_vma addend; | |
991 | }; | |
992 | ||
993 | /* FIXME: This should not be a static variable. */ | |
994 | ||
995 | static struct mips_hi16 *mips_hi16_list; | |
996 | ||
997 | bfd_reloc_status_type | |
998 | _bfd_mips_elf_hi16_reloc (abfd, | |
999 | reloc_entry, | |
1000 | symbol, | |
1001 | data, | |
1002 | input_section, | |
1003 | output_bfd, | |
1004 | error_message) | |
5f771d47 | 1005 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1006 | arelent *reloc_entry; |
1007 | asymbol *symbol; | |
1008 | PTR data; | |
1009 | asection *input_section; | |
1010 | bfd *output_bfd; | |
1011 | char **error_message; | |
1012 | { | |
1013 | bfd_reloc_status_type ret; | |
1014 | bfd_vma relocation; | |
1015 | struct mips_hi16 *n; | |
1016 | ||
1017 | /* If we're relocating, and this an external symbol, we don't want | |
1018 | to change anything. */ | |
1019 | if (output_bfd != (bfd *) NULL | |
1020 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1021 | && reloc_entry->addend == 0) | |
1022 | { | |
1023 | reloc_entry->address += input_section->output_offset; | |
1024 | return bfd_reloc_ok; | |
1025 | } | |
1026 | ||
1027 | ret = bfd_reloc_ok; | |
1028 | ||
1029 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
1030 | { | |
1031 | boolean relocateable; | |
1032 | bfd_vma gp; | |
1033 | ||
1034 | if (ret == bfd_reloc_undefined) | |
1035 | abort (); | |
1036 | ||
1037 | if (output_bfd != NULL) | |
1038 | relocateable = true; | |
1039 | else | |
1040 | { | |
1041 | relocateable = false; | |
1042 | output_bfd = symbol->section->output_section->owner; | |
1043 | } | |
1044 | ||
1045 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
1046 | error_message, &gp); | |
1047 | if (ret != bfd_reloc_ok) | |
1048 | return ret; | |
1049 | ||
1050 | relocation = gp - reloc_entry->address; | |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | if (bfd_is_und_section (symbol->section) | |
1055 | && output_bfd == (bfd *) NULL) | |
1056 | ret = bfd_reloc_undefined; | |
1057 | ||
1058 | if (bfd_is_com_section (symbol->section)) | |
1059 | relocation = 0; | |
1060 | else | |
1061 | relocation = symbol->value; | |
1062 | } | |
1063 | ||
1064 | relocation += symbol->section->output_section->vma; | |
1065 | relocation += symbol->section->output_offset; | |
1066 | relocation += reloc_entry->addend; | |
1067 | ||
1068 | if (reloc_entry->address > input_section->_cooked_size) | |
1069 | return bfd_reloc_outofrange; | |
1070 | ||
1071 | /* Save the information, and let LO16 do the actual relocation. */ | |
1072 | n = (struct mips_hi16 *) bfd_malloc (sizeof *n); | |
1073 | if (n == NULL) | |
1074 | return bfd_reloc_outofrange; | |
1075 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
1076 | n->addend = relocation; | |
1077 | n->next = mips_hi16_list; | |
1078 | mips_hi16_list = n; | |
1079 | ||
1080 | if (output_bfd != (bfd *) NULL) | |
1081 | reloc_entry->address += input_section->output_offset; | |
1082 | ||
1083 | return ret; | |
1084 | } | |
1085 | ||
1086 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit | |
1087 | inplace relocation; this function exists in order to do the | |
1088 | R_MIPS_HI16 relocation described above. */ | |
1089 | ||
1090 | bfd_reloc_status_type | |
1091 | _bfd_mips_elf_lo16_reloc (abfd, | |
1092 | reloc_entry, | |
1093 | symbol, | |
1094 | data, | |
1095 | input_section, | |
1096 | output_bfd, | |
1097 | error_message) | |
1098 | bfd *abfd; | |
1099 | arelent *reloc_entry; | |
1100 | asymbol *symbol; | |
1101 | PTR data; | |
1102 | asection *input_section; | |
1103 | bfd *output_bfd; | |
1104 | char **error_message; | |
1105 | { | |
1106 | arelent gp_disp_relent; | |
1107 | ||
1108 | if (mips_hi16_list != NULL) | |
1109 | { | |
1110 | struct mips_hi16 *l; | |
1111 | ||
1112 | l = mips_hi16_list; | |
1113 | while (l != NULL) | |
1114 | { | |
1115 | unsigned long insn; | |
1116 | unsigned long val; | |
1117 | unsigned long vallo; | |
1118 | struct mips_hi16 *next; | |
1119 | ||
1120 | /* Do the HI16 relocation. Note that we actually don't need | |
1121 | to know anything about the LO16 itself, except where to | |
1122 | find the low 16 bits of the addend needed by the LO16. */ | |
1123 | insn = bfd_get_32 (abfd, l->addr); | |
1124 | vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address) | |
1125 | & 0xffff); | |
1126 | val = ((insn & 0xffff) << 16) + vallo; | |
1127 | val += l->addend; | |
1128 | ||
1129 | /* The low order 16 bits are always treated as a signed | |
1130 | value. Therefore, a negative value in the low order bits | |
1131 | requires an adjustment in the high order bits. We need | |
1132 | to make this adjustment in two ways: once for the bits we | |
1133 | took from the data, and once for the bits we are putting | |
1134 | back in to the data. */ | |
1135 | if ((vallo & 0x8000) != 0) | |
1136 | val -= 0x10000; | |
1137 | if ((val & 0x8000) != 0) | |
1138 | val += 0x10000; | |
1139 | ||
1140 | insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff); | |
1141 | bfd_put_32 (abfd, insn, l->addr); | |
1142 | ||
1143 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
1144 | { | |
1145 | gp_disp_relent = *reloc_entry; | |
1146 | reloc_entry = &gp_disp_relent; | |
1147 | reloc_entry->addend = l->addend; | |
1148 | } | |
1149 | ||
1150 | next = l->next; | |
1151 | free (l); | |
1152 | l = next; | |
1153 | } | |
1154 | ||
1155 | mips_hi16_list = NULL; | |
1156 | } | |
1157 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
1158 | { | |
1159 | bfd_reloc_status_type ret; | |
1160 | bfd_vma gp, relocation; | |
1161 | ||
1162 | /* FIXME: Does this case ever occur? */ | |
1163 | ||
1164 | ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); | |
1165 | if (ret != bfd_reloc_ok) | |
1166 | return ret; | |
1167 | ||
1168 | relocation = gp - reloc_entry->address; | |
1169 | relocation += symbol->section->output_section->vma; | |
1170 | relocation += symbol->section->output_offset; | |
1171 | relocation += reloc_entry->addend; | |
1172 | ||
1173 | if (reloc_entry->address > input_section->_cooked_size) | |
1174 | return bfd_reloc_outofrange; | |
1175 | ||
1176 | gp_disp_relent = *reloc_entry; | |
1177 | reloc_entry = &gp_disp_relent; | |
1178 | reloc_entry->addend = relocation - 4; | |
1179 | } | |
1180 | ||
1181 | /* Now do the LO16 reloc in the usual way. */ | |
1182 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1183 | input_section, output_bfd, error_message); | |
1184 | } | |
1185 | ||
1186 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset | |
1187 | table used for PIC code. If the symbol is an external symbol, the | |
1188 | instruction is modified to contain the offset of the appropriate | |
1189 | entry in the global offset table. If the symbol is a section | |
1190 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
1191 | addends are combined to form the real addend against the section | |
1192 | symbol; the GOT16 is modified to contain the offset of an entry in | |
1193 | the global offset table, and the LO16 is modified to offset it | |
1194 | appropriately. Thus an offset larger than 16 bits requires a | |
1195 | modified value in the global offset table. | |
1196 | ||
1197 | This implementation suffices for the assembler, but the linker does | |
1198 | not yet know how to create global offset tables. */ | |
1199 | ||
1200 | bfd_reloc_status_type | |
1201 | _bfd_mips_elf_got16_reloc (abfd, | |
1202 | reloc_entry, | |
1203 | symbol, | |
1204 | data, | |
1205 | input_section, | |
1206 | output_bfd, | |
1207 | error_message) | |
1208 | bfd *abfd; | |
1209 | arelent *reloc_entry; | |
1210 | asymbol *symbol; | |
1211 | PTR data; | |
1212 | asection *input_section; | |
1213 | bfd *output_bfd; | |
1214 | char **error_message; | |
1215 | { | |
1216 | /* If we're relocating, and this an external symbol, we don't want | |
1217 | to change anything. */ | |
1218 | if (output_bfd != (bfd *) NULL | |
1219 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1220 | && reloc_entry->addend == 0) | |
1221 | { | |
1222 | reloc_entry->address += input_section->output_offset; | |
1223 | return bfd_reloc_ok; | |
1224 | } | |
1225 | ||
1226 | /* If we're relocating, and this is a local symbol, we can handle it | |
1227 | just like HI16. */ | |
1228 | if (output_bfd != (bfd *) NULL | |
1229 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
1230 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
1231 | input_section, output_bfd, error_message); | |
1232 | ||
1233 | abort (); | |
1234 | } | |
1235 | ||
7403cb63 MM |
1236 | /* Set the GP value for OUTPUT_BFD. Returns false if this is a |
1237 | dangerous relocation. */ | |
1238 | ||
1239 | static boolean | |
1240 | mips_elf_assign_gp (output_bfd, pgp) | |
1241 | bfd *output_bfd; | |
1242 | bfd_vma *pgp; | |
1243 | { | |
1244 | unsigned int count; | |
1245 | asymbol **sym; | |
1246 | unsigned int i; | |
1247 | ||
1248 | /* If we've already figured out what GP will be, just return it. */ | |
1249 | *pgp = _bfd_get_gp_value (output_bfd); | |
1250 | if (*pgp) | |
1251 | return true; | |
1252 | ||
1253 | count = bfd_get_symcount (output_bfd); | |
1254 | sym = bfd_get_outsymbols (output_bfd); | |
1255 | ||
1256 | /* The linker script will have created a symbol named `_gp' with the | |
1257 | appropriate value. */ | |
1258 | if (sym == (asymbol **) NULL) | |
1259 | i = count; | |
1260 | else | |
1261 | { | |
1262 | for (i = 0; i < count; i++, sym++) | |
1263 | { | |
1264 | register CONST char *name; | |
1265 | ||
1266 | name = bfd_asymbol_name (*sym); | |
1267 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1268 | { | |
1269 | *pgp = bfd_asymbol_value (*sym); | |
1270 | _bfd_set_gp_value (output_bfd, *pgp); | |
1271 | break; | |
1272 | } | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | if (i >= count) | |
1277 | { | |
1278 | /* Only get the error once. */ | |
1279 | *pgp = 4; | |
1280 | _bfd_set_gp_value (output_bfd, *pgp); | |
1281 | return false; | |
1282 | } | |
1283 | ||
1284 | return true; | |
1285 | } | |
1286 | ||
252b5132 RH |
1287 | /* We have to figure out the gp value, so that we can adjust the |
1288 | symbol value correctly. We look up the symbol _gp in the output | |
1289 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1290 | target data. We don't need to adjust the symbol value for an | |
1291 | external symbol if we are producing relocateable output. */ | |
1292 | ||
1293 | static bfd_reloc_status_type | |
1294 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) | |
1295 | bfd *output_bfd; | |
1296 | asymbol *symbol; | |
1297 | boolean relocateable; | |
1298 | char **error_message; | |
1299 | bfd_vma *pgp; | |
1300 | { | |
1301 | if (bfd_is_und_section (symbol->section) | |
1302 | && ! relocateable) | |
1303 | { | |
1304 | *pgp = 0; | |
1305 | return bfd_reloc_undefined; | |
1306 | } | |
1307 | ||
1308 | *pgp = _bfd_get_gp_value (output_bfd); | |
1309 | if (*pgp == 0 | |
1310 | && (! relocateable | |
1311 | || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
1312 | { | |
1313 | if (relocateable) | |
1314 | { | |
1315 | /* Make up a value. */ | |
1316 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1317 | _bfd_set_gp_value (output_bfd, *pgp); | |
1318 | } | |
7403cb63 | 1319 | else if (!mips_elf_assign_gp (output_bfd, pgp)) |
252b5132 | 1320 | { |
7403cb63 MM |
1321 | *error_message = |
1322 | (char *) _("GP relative relocation when _gp not defined"); | |
1323 | return bfd_reloc_dangerous; | |
252b5132 RH |
1324 | } |
1325 | } | |
1326 | ||
1327 | return bfd_reloc_ok; | |
1328 | } | |
1329 | ||
1330 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must | |
1331 | become the offset from the gp register. This function also handles | |
1332 | R_MIPS_LITERAL relocations, although those can be handled more | |
1333 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
1334 | merged. */ | |
1335 | ||
1336 | static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *, | |
1337 | arelent *, asection *, | |
1338 | boolean, PTR, bfd_vma)); | |
1339 | ||
1340 | bfd_reloc_status_type | |
1341 | _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1342 | output_bfd, error_message) | |
1343 | bfd *abfd; | |
1344 | arelent *reloc_entry; | |
1345 | asymbol *symbol; | |
1346 | PTR data; | |
1347 | asection *input_section; | |
1348 | bfd *output_bfd; | |
1349 | char **error_message; | |
1350 | { | |
1351 | boolean relocateable; | |
1352 | bfd_reloc_status_type ret; | |
1353 | bfd_vma gp; | |
1354 | ||
1355 | /* If we're relocating, and this is an external symbol with no | |
1356 | addend, we don't want to change anything. We will only have an | |
1357 | addend if this is a newly created reloc, not read from an ELF | |
1358 | file. */ | |
1359 | if (output_bfd != (bfd *) NULL | |
1360 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1361 | && reloc_entry->addend == 0) | |
1362 | { | |
1363 | reloc_entry->address += input_section->output_offset; | |
1364 | return bfd_reloc_ok; | |
1365 | } | |
1366 | ||
1367 | if (output_bfd != (bfd *) NULL) | |
1368 | relocateable = true; | |
1369 | else | |
1370 | { | |
1371 | relocateable = false; | |
1372 | output_bfd = symbol->section->output_section->owner; | |
1373 | } | |
1374 | ||
1375 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, | |
1376 | &gp); | |
1377 | if (ret != bfd_reloc_ok) | |
1378 | return ret; | |
1379 | ||
1380 | return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
1381 | relocateable, data, gp); | |
1382 | } | |
1383 | ||
1384 | static bfd_reloc_status_type | |
1385 | gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1386 | gp) | |
1387 | bfd *abfd; | |
1388 | asymbol *symbol; | |
1389 | arelent *reloc_entry; | |
1390 | asection *input_section; | |
1391 | boolean relocateable; | |
1392 | PTR data; | |
1393 | bfd_vma gp; | |
1394 | { | |
1395 | bfd_vma relocation; | |
1396 | unsigned long insn; | |
1397 | unsigned long val; | |
1398 | ||
1399 | if (bfd_is_com_section (symbol->section)) | |
1400 | relocation = 0; | |
1401 | else | |
1402 | relocation = symbol->value; | |
1403 | ||
1404 | relocation += symbol->section->output_section->vma; | |
1405 | relocation += symbol->section->output_offset; | |
1406 | ||
1407 | if (reloc_entry->address > input_section->_cooked_size) | |
1408 | return bfd_reloc_outofrange; | |
1409 | ||
1410 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1411 | ||
1412 | /* Set val to the offset into the section or symbol. */ | |
1413 | if (reloc_entry->howto->src_mask == 0) | |
1414 | { | |
1415 | /* This case occurs with the 64-bit MIPS ELF ABI. */ | |
1416 | val = reloc_entry->addend; | |
1417 | } | |
1418 | else | |
1419 | { | |
1420 | val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; | |
1421 | if (val & 0x8000) | |
1422 | val -= 0x10000; | |
1423 | } | |
1424 | ||
1425 | /* Adjust val for the final section location and GP value. If we | |
1426 | are producing relocateable output, we don't want to do this for | |
1427 | an external symbol. */ | |
1428 | if (! relocateable | |
1429 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1430 | val += relocation - gp; | |
1431 | ||
1432 | insn = (insn &~ 0xffff) | (val & 0xffff); | |
1433 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
1434 | ||
1435 | if (relocateable) | |
1436 | reloc_entry->address += input_section->output_offset; | |
1437 | ||
1438 | /* Make sure it fit in 16 bits. */ | |
1439 | if (val >= 0x8000 && val < 0xffff8000) | |
1440 | return bfd_reloc_overflow; | |
1441 | ||
1442 | return bfd_reloc_ok; | |
1443 | } | |
1444 | ||
1445 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset | |
1446 | from the gp register? XXX */ | |
1447 | ||
1448 | static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, | |
1449 | arelent *, asection *, | |
1450 | boolean, PTR, bfd_vma)); | |
1451 | ||
1452 | bfd_reloc_status_type | |
1453 | _bfd_mips_elf_gprel32_reloc (abfd, | |
1454 | reloc_entry, | |
1455 | symbol, | |
1456 | data, | |
1457 | input_section, | |
1458 | output_bfd, | |
1459 | error_message) | |
1460 | bfd *abfd; | |
1461 | arelent *reloc_entry; | |
1462 | asymbol *symbol; | |
1463 | PTR data; | |
1464 | asection *input_section; | |
1465 | bfd *output_bfd; | |
1466 | char **error_message; | |
1467 | { | |
1468 | boolean relocateable; | |
1469 | bfd_reloc_status_type ret; | |
1470 | bfd_vma gp; | |
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 != (bfd *) NULL | |
1477 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1478 | && reloc_entry->addend == 0) | |
1479 | { | |
1480 | *error_message = (char *) | |
1481 | _("32bits gp relative relocation occurs for an external symbol"); | |
1482 | return bfd_reloc_outofrange; | |
1483 | } | |
1484 | ||
1485 | if (output_bfd != (bfd *) NULL) | |
1486 | { | |
1487 | relocateable = true; | |
1488 | gp = _bfd_get_gp_value (output_bfd); | |
1489 | } | |
1490 | else | |
1491 | { | |
1492 | relocateable = false; | |
1493 | output_bfd = symbol->section->output_section->owner; | |
1494 | ||
1495 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
1496 | error_message, &gp); | |
1497 | if (ret != bfd_reloc_ok) | |
1498 | return ret; | |
1499 | } | |
1500 | ||
1501 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, | |
1502 | relocateable, data, gp); | |
1503 | } | |
1504 | ||
1505 | static bfd_reloc_status_type | |
1506 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1507 | gp) | |
1508 | bfd *abfd; | |
1509 | asymbol *symbol; | |
1510 | arelent *reloc_entry; | |
1511 | asection *input_section; | |
1512 | boolean relocateable; | |
1513 | PTR data; | |
1514 | bfd_vma gp; | |
1515 | { | |
1516 | bfd_vma relocation; | |
1517 | unsigned long val; | |
1518 | ||
1519 | if (bfd_is_com_section (symbol->section)) | |
1520 | relocation = 0; | |
1521 | else | |
1522 | relocation = symbol->value; | |
1523 | ||
1524 | relocation += symbol->section->output_section->vma; | |
1525 | relocation += symbol->section->output_offset; | |
1526 | ||
1527 | if (reloc_entry->address > input_section->_cooked_size) | |
1528 | return bfd_reloc_outofrange; | |
1529 | ||
1530 | if (reloc_entry->howto->src_mask == 0) | |
1531 | { | |
1532 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
1533 | val = 0; | |
1534 | } | |
1535 | else | |
1536 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1537 | ||
1538 | /* Set val to the offset into the section or symbol. */ | |
1539 | val += reloc_entry->addend; | |
1540 | ||
1541 | /* Adjust val for the final section location and GP value. If we | |
1542 | are producing relocateable output, we don't want to do this for | |
1543 | an external symbol. */ | |
1544 | if (! relocateable | |
1545 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1546 | val += relocation - gp; | |
1547 | ||
1548 | bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); | |
1549 | ||
1550 | if (relocateable) | |
1551 | reloc_entry->address += input_section->output_offset; | |
1552 | ||
1553 | return bfd_reloc_ok; | |
1554 | } | |
1555 | ||
1556 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are | |
1557 | generated when addreses are 64 bits. The upper 32 bits are a simle | |
1558 | sign extension. */ | |
1559 | ||
1560 | static bfd_reloc_status_type | |
1561 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1562 | output_bfd, error_message) | |
1563 | bfd *abfd; | |
1564 | arelent *reloc_entry; | |
1565 | asymbol *symbol; | |
1566 | PTR data; | |
1567 | asection *input_section; | |
1568 | bfd *output_bfd; | |
1569 | char **error_message; | |
1570 | { | |
1571 | bfd_reloc_status_type r; | |
1572 | arelent reloc32; | |
1573 | unsigned long val; | |
1574 | bfd_size_type addr; | |
1575 | ||
1576 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1577 | input_section, output_bfd, error_message); | |
1578 | if (r != bfd_reloc_continue) | |
1579 | return r; | |
1580 | ||
1581 | /* Do a normal 32 bit relocation on the lower 32 bits. */ | |
1582 | reloc32 = *reloc_entry; | |
1583 | if (bfd_big_endian (abfd)) | |
1584 | reloc32.address += 4; | |
1585 | reloc32.howto = &elf_mips_howto_table[R_MIPS_32]; | |
1586 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, | |
1587 | output_bfd, error_message); | |
1588 | ||
1589 | /* Sign extend into the upper 32 bits. */ | |
1590 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
1591 | if ((val & 0x80000000) != 0) | |
1592 | val = 0xffffffff; | |
1593 | else | |
1594 | val = 0; | |
1595 | addr = reloc_entry->address; | |
1596 | if (bfd_little_endian (abfd)) | |
1597 | addr += 4; | |
1598 | bfd_put_32 (abfd, val, (bfd_byte *) data + addr); | |
1599 | ||
1600 | return r; | |
1601 | } | |
1602 | ||
1603 | /* Handle a mips16 jump. */ | |
1604 | ||
1605 | static bfd_reloc_status_type | |
1606 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1607 | output_bfd, error_message) | |
5f771d47 | 1608 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1609 | arelent *reloc_entry; |
1610 | asymbol *symbol; | |
5f771d47 | 1611 | PTR data ATTRIBUTE_UNUSED; |
252b5132 RH |
1612 | asection *input_section; |
1613 | bfd *output_bfd; | |
5f771d47 | 1614 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
1615 | { |
1616 | if (output_bfd != (bfd *) NULL | |
1617 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1618 | && reloc_entry->addend == 0) | |
1619 | { | |
1620 | reloc_entry->address += input_section->output_offset; | |
1621 | return bfd_reloc_ok; | |
1622 | } | |
1623 | ||
1624 | /* FIXME. */ | |
1625 | { | |
1626 | static boolean warned; | |
1627 | ||
1628 | if (! warned) | |
1629 | (*_bfd_error_handler) | |
1630 | (_("Linking mips16 objects into %s format is not supported"), | |
1631 | bfd_get_target (input_section->output_section->owner)); | |
1632 | warned = true; | |
1633 | } | |
1634 | ||
1635 | return bfd_reloc_undefined; | |
1636 | } | |
1637 | ||
1638 | /* Handle a mips16 GP relative reloc. */ | |
1639 | ||
1640 | static bfd_reloc_status_type | |
1641 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1642 | output_bfd, error_message) | |
1643 | bfd *abfd; | |
1644 | arelent *reloc_entry; | |
1645 | asymbol *symbol; | |
1646 | PTR data; | |
1647 | asection *input_section; | |
1648 | bfd *output_bfd; | |
1649 | char **error_message; | |
1650 | { | |
1651 | boolean relocateable; | |
1652 | bfd_reloc_status_type ret; | |
1653 | bfd_vma gp; | |
1654 | unsigned short extend, insn; | |
1655 | unsigned long final; | |
1656 | ||
1657 | /* If we're relocating, and this is an external symbol with no | |
1658 | addend, we don't want to change anything. We will only have an | |
1659 | addend if this is a newly created reloc, not read from an ELF | |
1660 | file. */ | |
1661 | if (output_bfd != NULL | |
1662 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1663 | && reloc_entry->addend == 0) | |
1664 | { | |
1665 | reloc_entry->address += input_section->output_offset; | |
1666 | return bfd_reloc_ok; | |
1667 | } | |
1668 | ||
1669 | if (output_bfd != NULL) | |
1670 | relocateable = true; | |
1671 | else | |
1672 | { | |
1673 | relocateable = false; | |
1674 | output_bfd = symbol->section->output_section->owner; | |
1675 | } | |
1676 | ||
1677 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, | |
1678 | &gp); | |
1679 | if (ret != bfd_reloc_ok) | |
1680 | return ret; | |
1681 | ||
1682 | if (reloc_entry->address > input_section->_cooked_size) | |
1683 | return bfd_reloc_outofrange; | |
1684 | ||
1685 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
1686 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1687 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); | |
1688 | ||
1689 | /* Stuff the current addend back as a 32 bit value, do the usual | |
1690 | relocation, and then clean up. */ | |
1691 | bfd_put_32 (abfd, | |
1692 | (((extend & 0x1f) << 11) | |
1693 | | (extend & 0x7e0) | |
1694 | | (insn & 0x1f)), | |
1695 | (bfd_byte *) data + reloc_entry->address); | |
1696 | ||
1697 | ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
1698 | relocateable, data, gp); | |
1699 | ||
1700 | final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1701 | bfd_put_16 (abfd, | |
1702 | ((extend & 0xf800) | |
1703 | | ((final >> 11) & 0x1f) | |
1704 | | (final & 0x7e0)), | |
1705 | (bfd_byte *) data + reloc_entry->address); | |
1706 | bfd_put_16 (abfd, | |
1707 | ((insn & 0xffe0) | |
1708 | | (final & 0x1f)), | |
1709 | (bfd_byte *) data + reloc_entry->address + 2); | |
1710 | ||
1711 | return ret; | |
1712 | } | |
1713 | ||
1714 | /* Return the ISA for a MIPS e_flags value. */ | |
1715 | ||
1716 | static INLINE int | |
1717 | elf_mips_isa (flags) | |
1718 | flagword flags; | |
1719 | { | |
1720 | switch (flags & EF_MIPS_ARCH) | |
1721 | { | |
1722 | case E_MIPS_ARCH_1: | |
1723 | return 1; | |
1724 | case E_MIPS_ARCH_2: | |
1725 | return 2; | |
1726 | case E_MIPS_ARCH_3: | |
1727 | return 3; | |
1728 | case E_MIPS_ARCH_4: | |
1729 | return 4; | |
1730 | } | |
1731 | return 4; | |
1732 | } | |
1733 | ||
1734 | /* Return the MACH for a MIPS e_flags value. */ | |
1735 | ||
1736 | static INLINE int | |
1737 | elf_mips_mach (flags) | |
1738 | flagword flags; | |
1739 | { | |
1740 | switch (flags & EF_MIPS_MACH) | |
1741 | { | |
1742 | case E_MIPS_MACH_3900: | |
1743 | return bfd_mach_mips3900; | |
1744 | ||
1745 | case E_MIPS_MACH_4010: | |
1746 | return bfd_mach_mips4010; | |
1747 | ||
1748 | case E_MIPS_MACH_4100: | |
1749 | return bfd_mach_mips4100; | |
1750 | ||
1751 | case E_MIPS_MACH_4111: | |
1752 | return bfd_mach_mips4111; | |
1753 | ||
1754 | case E_MIPS_MACH_4650: | |
1755 | return bfd_mach_mips4650; | |
1756 | ||
1757 | default: | |
1758 | switch (flags & EF_MIPS_ARCH) | |
1759 | { | |
1760 | default: | |
1761 | case E_MIPS_ARCH_1: | |
1762 | return bfd_mach_mips3000; | |
1763 | break; | |
1764 | ||
1765 | case E_MIPS_ARCH_2: | |
1766 | return bfd_mach_mips6000; | |
1767 | break; | |
1768 | ||
1769 | case E_MIPS_ARCH_3: | |
1770 | return bfd_mach_mips4000; | |
1771 | break; | |
1772 | ||
1773 | case E_MIPS_ARCH_4: | |
1774 | return bfd_mach_mips8000; | |
1775 | break; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | return 0; | |
1780 | } | |
1781 | ||
103186c6 | 1782 | /* Return printable name for ABI. */ |
252b5132 RH |
1783 | |
1784 | static INLINE char* | |
103186c6 MM |
1785 | elf_mips_abi_name (abfd) |
1786 | bfd *abfd; | |
252b5132 | 1787 | { |
103186c6 MM |
1788 | flagword flags; |
1789 | ||
1790 | if (ABI_N32_P (abfd)) | |
1791 | return "N32"; | |
1792 | else if (ABI_64_P (abfd)) | |
1793 | return "64"; | |
1794 | ||
1795 | flags = elf_elfheader (abfd)->e_flags; | |
252b5132 RH |
1796 | switch (flags & EF_MIPS_ABI) |
1797 | { | |
1798 | case 0: | |
1799 | return "none"; | |
1800 | case E_MIPS_ABI_O32: | |
1801 | return "O32"; | |
1802 | case E_MIPS_ABI_O64: | |
1803 | return "O64"; | |
1804 | case E_MIPS_ABI_EABI32: | |
1805 | return "EABI32"; | |
1806 | case E_MIPS_ABI_EABI64: | |
1807 | return "EABI64"; | |
1808 | default: | |
1809 | return "unknown abi"; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ | |
1814 | ||
1815 | struct elf_reloc_map { | |
1816 | bfd_reloc_code_real_type bfd_reloc_val; | |
1817 | enum elf_mips_reloc_type elf_reloc_val; | |
1818 | }; | |
1819 | ||
1820 | static CONST struct elf_reloc_map mips_reloc_map[] = | |
1821 | { | |
1822 | { BFD_RELOC_NONE, R_MIPS_NONE, }, | |
1823 | { BFD_RELOC_16, R_MIPS_16 }, | |
1824 | { BFD_RELOC_32, R_MIPS_32 }, | |
1825 | { BFD_RELOC_64, R_MIPS_64 }, | |
1826 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
1827 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1828 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1829 | { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 }, | |
1830 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1831 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
1832 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, | |
1833 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, | |
1834 | { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }, | |
1835 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
1836 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
1837 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
3f830999 MM |
1838 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, |
1839 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, | |
1840 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, | |
1841 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, | |
1842 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } | |
252b5132 RH |
1843 | }; |
1844 | ||
1845 | /* Given a BFD reloc type, return a howto structure. */ | |
1846 | ||
1847 | static reloc_howto_type * | |
1848 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
1849 | bfd *abfd; | |
1850 | bfd_reloc_code_real_type code; | |
1851 | { | |
1852 | unsigned int i; | |
1853 | ||
1854 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
1855 | { | |
1856 | if (mips_reloc_map[i].bfd_reloc_val == code) | |
1857 | return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val]; | |
1858 | } | |
1859 | ||
1860 | switch (code) | |
1861 | { | |
1862 | default: | |
1863 | bfd_set_error (bfd_error_bad_value); | |
1864 | return NULL; | |
1865 | ||
1866 | case BFD_RELOC_CTOR: | |
1867 | /* We need to handle BFD_RELOC_CTOR specially. | |
1868 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the | |
1869 | size of addresses on this architecture. */ | |
1870 | if (bfd_arch_bits_per_address (abfd) == 32) | |
1871 | return &elf_mips_howto_table[(int) R_MIPS_32]; | |
1872 | else | |
1873 | return &elf_mips_ctor64_howto; | |
1874 | ||
1875 | case BFD_RELOC_MIPS16_JMP: | |
1876 | return &elf_mips16_jump_howto; | |
1877 | case BFD_RELOC_MIPS16_GPREL: | |
1878 | return &elf_mips16_gprel_howto; | |
1879 | case BFD_RELOC_VTABLE_INHERIT: | |
1880 | return &elf_mips_gnu_vtinherit_howto; | |
1881 | case BFD_RELOC_VTABLE_ENTRY: | |
1882 | return &elf_mips_gnu_vtentry_howto; | |
1883 | } | |
1884 | } | |
1885 | ||
3f830999 | 1886 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
252b5132 RH |
1887 | |
1888 | static void | |
1889 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
1890 | bfd *abfd; | |
1891 | arelent *cache_ptr; | |
1892 | Elf32_Internal_Rel *dst; | |
1893 | { | |
1894 | unsigned int r_type; | |
1895 | ||
1896 | r_type = ELF32_R_TYPE (dst->r_info); | |
1897 | switch (r_type) | |
1898 | { | |
1899 | case R_MIPS16_26: | |
1900 | cache_ptr->howto = &elf_mips16_jump_howto; | |
1901 | break; | |
1902 | case R_MIPS16_GPREL: | |
1903 | cache_ptr->howto = &elf_mips16_gprel_howto; | |
1904 | break; | |
1905 | case R_MIPS_GNU_VTINHERIT: | |
1906 | cache_ptr->howto = &elf_mips_gnu_vtinherit_howto; | |
1907 | break; | |
1908 | case R_MIPS_GNU_VTENTRY: | |
1909 | cache_ptr->howto = &elf_mips_gnu_vtentry_howto; | |
1910 | break; | |
1911 | ||
1912 | default: | |
1913 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
1914 | cache_ptr->howto = &elf_mips_howto_table[r_type]; | |
1915 | break; | |
1916 | } | |
1917 | ||
1918 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP | |
1919 | value for the object file. We get the addend now, rather than | |
1920 | when we do the relocation, because the symbol manipulations done | |
1921 | by the linker may cause us to lose track of the input BFD. */ | |
1922 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
1923 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
1924 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
1925 | cache_ptr->addend = elf_gp (abfd); | |
1926 | } | |
3f830999 MM |
1927 | |
1928 | /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */ | |
1929 | ||
1930 | static void | |
1931 | mips_info_to_howto_rela (abfd, cache_ptr, dst) | |
1932 | bfd *abfd; | |
1933 | arelent *cache_ptr; | |
1934 | Elf32_Internal_Rela *dst; | |
1935 | { | |
1936 | /* Since an Elf32_Internal_Rel is an initial prefix of an | |
1937 | Elf32_Internal_Rela, we can just use mips_info_to_howto_rel | |
1938 | above. */ | |
1939 | mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst); | |
1940 | ||
1941 | /* If we ever need to do any extra processing with dst->r_addend | |
1942 | (the field omitted in an Elf32_Internal_Rel) we can do it here. */ | |
1943 | } | |
252b5132 RH |
1944 | \f |
1945 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
1946 | routines swap this structure in and out. They are used outside of | |
1947 | BFD, so they are globally visible. */ | |
1948 | ||
1949 | void | |
1950 | bfd_mips_elf32_swap_reginfo_in (abfd, ex, in) | |
1951 | bfd *abfd; | |
1952 | const Elf32_External_RegInfo *ex; | |
1953 | Elf32_RegInfo *in; | |
1954 | { | |
1955 | in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); | |
1956 | in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); | |
1957 | in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); | |
1958 | in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); | |
1959 | in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); | |
1960 | in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value); | |
1961 | } | |
1962 | ||
1963 | void | |
1964 | bfd_mips_elf32_swap_reginfo_out (abfd, in, ex) | |
1965 | bfd *abfd; | |
1966 | const Elf32_RegInfo *in; | |
1967 | Elf32_External_RegInfo *ex; | |
1968 | { | |
1969 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, | |
1970 | (bfd_byte *) ex->ri_gprmask); | |
1971 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], | |
1972 | (bfd_byte *) ex->ri_cprmask[0]); | |
1973 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], | |
1974 | (bfd_byte *) ex->ri_cprmask[1]); | |
1975 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], | |
1976 | (bfd_byte *) ex->ri_cprmask[2]); | |
1977 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], | |
1978 | (bfd_byte *) ex->ri_cprmask[3]); | |
1979 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value, | |
1980 | (bfd_byte *) ex->ri_gp_value); | |
1981 | } | |
1982 | ||
1983 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
1984 | information in an Elf64_Reginfo structure. These routines swap | |
1985 | them in and out. They are globally visible because they are used | |
1986 | outside of BFD. These routines are here so that gas can call them | |
1987 | without worrying about whether the 64 bit ABI has been included. */ | |
1988 | ||
1989 | void | |
1990 | bfd_mips_elf64_swap_reginfo_in (abfd, ex, in) | |
1991 | bfd *abfd; | |
1992 | const Elf64_External_RegInfo *ex; | |
1993 | Elf64_Internal_RegInfo *in; | |
1994 | { | |
1995 | in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); | |
1996 | in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad); | |
1997 | in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); | |
1998 | in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); | |
1999 | in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); | |
2000 | in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); | |
2001 | in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value); | |
2002 | } | |
2003 | ||
2004 | void | |
2005 | bfd_mips_elf64_swap_reginfo_out (abfd, in, ex) | |
2006 | bfd *abfd; | |
2007 | const Elf64_Internal_RegInfo *in; | |
2008 | Elf64_External_RegInfo *ex; | |
2009 | { | |
2010 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, | |
2011 | (bfd_byte *) ex->ri_gprmask); | |
2012 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad, | |
2013 | (bfd_byte *) ex->ri_pad); | |
2014 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], | |
2015 | (bfd_byte *) ex->ri_cprmask[0]); | |
2016 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], | |
2017 | (bfd_byte *) ex->ri_cprmask[1]); | |
2018 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], | |
2019 | (bfd_byte *) ex->ri_cprmask[2]); | |
2020 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], | |
2021 | (bfd_byte *) ex->ri_cprmask[3]); | |
2022 | bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value, | |
2023 | (bfd_byte *) ex->ri_gp_value); | |
2024 | } | |
2025 | ||
2026 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2027 | on the equivalence of the two elements of the union. */ | |
2028 | ||
2029 | static void | |
2030 | bfd_mips_elf32_swap_gptab_in (abfd, ex, in) | |
2031 | bfd *abfd; | |
2032 | const Elf32_External_gptab *ex; | |
2033 | Elf32_gptab *in; | |
2034 | { | |
2035 | in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value); | |
2036 | in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes); | |
2037 | } | |
2038 | ||
2039 | static void | |
2040 | bfd_mips_elf32_swap_gptab_out (abfd, in, ex) | |
2041 | bfd *abfd; | |
2042 | const Elf32_gptab *in; | |
2043 | Elf32_External_gptab *ex; | |
2044 | { | |
2045 | bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, | |
2046 | ex->gt_entry.gt_g_value); | |
2047 | bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, | |
2048 | ex->gt_entry.gt_bytes); | |
2049 | } | |
2050 | ||
2051 | static void | |
2052 | bfd_elf32_swap_compact_rel_out (abfd, in, ex) | |
2053 | bfd *abfd; | |
2054 | const Elf32_compact_rel *in; | |
2055 | Elf32_External_compact_rel *ex; | |
2056 | { | |
2057 | bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1); | |
2058 | bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num); | |
2059 | bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2); | |
2060 | bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset); | |
2061 | bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0); | |
2062 | bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1); | |
2063 | } | |
2064 | ||
2065 | static void | |
2066 | bfd_elf32_swap_crinfo_out (abfd, in, ex) | |
2067 | bfd *abfd; | |
2068 | const Elf32_crinfo *in; | |
2069 | Elf32_External_crinfo *ex; | |
2070 | { | |
2071 | unsigned long l; | |
2072 | ||
2073 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2074 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2075 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2076 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2077 | bfd_h_put_32 (abfd, (bfd_vma) l, ex->info); | |
2078 | bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst); | |
2079 | bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr); | |
2080 | } | |
2081 | ||
2082 | /* Swap in an options header. */ | |
2083 | ||
2084 | void | |
2085 | bfd_mips_elf_swap_options_in (abfd, ex, in) | |
2086 | bfd *abfd; | |
2087 | const Elf_External_Options *ex; | |
2088 | Elf_Internal_Options *in; | |
2089 | { | |
2090 | in->kind = bfd_h_get_8 (abfd, ex->kind); | |
2091 | in->size = bfd_h_get_8 (abfd, ex->size); | |
2092 | in->section = bfd_h_get_16 (abfd, ex->section); | |
2093 | in->info = bfd_h_get_32 (abfd, ex->info); | |
2094 | } | |
2095 | ||
2096 | /* Swap out an options header. */ | |
2097 | ||
2098 | void | |
2099 | bfd_mips_elf_swap_options_out (abfd, in, ex) | |
2100 | bfd *abfd; | |
2101 | const Elf_Internal_Options *in; | |
2102 | Elf_External_Options *ex; | |
2103 | { | |
2104 | bfd_h_put_8 (abfd, in->kind, ex->kind); | |
2105 | bfd_h_put_8 (abfd, in->size, ex->size); | |
2106 | bfd_h_put_16 (abfd, in->section, ex->section); | |
2107 | bfd_h_put_32 (abfd, in->info, ex->info); | |
2108 | } | |
c6142e5d MM |
2109 | |
2110 | /* Swap in an MSYM entry. */ | |
2111 | ||
2112 | static void | |
2113 | bfd_mips_elf_swap_msym_in (abfd, ex, in) | |
2114 | bfd *abfd; | |
2115 | const Elf32_External_Msym *ex; | |
2116 | Elf32_Internal_Msym *in; | |
2117 | { | |
2118 | in->ms_hash_value = bfd_h_get_32 (abfd, ex->ms_hash_value); | |
2119 | in->ms_info = bfd_h_get_32 (abfd, ex->ms_info); | |
2120 | } | |
2121 | ||
2122 | /* Swap out an MSYM entry. */ | |
2123 | ||
2124 | static void | |
2125 | bfd_mips_elf_swap_msym_out (abfd, in, ex) | |
2126 | bfd *abfd; | |
2127 | const Elf32_Internal_Msym *in; | |
2128 | Elf32_External_Msym *ex; | |
2129 | { | |
2130 | bfd_h_put_32 (abfd, in->ms_hash_value, ex->ms_hash_value); | |
2131 | bfd_h_put_32 (abfd, in->ms_info, ex->ms_info); | |
2132 | } | |
2133 | ||
252b5132 RH |
2134 | \f |
2135 | /* Determine whether a symbol is global for the purposes of splitting | |
2136 | the symbol table into global symbols and local symbols. At least | |
2137 | on Irix 5, this split must be between section symbols and all other | |
2138 | symbols. On most ELF targets the split is between static symbols | |
2139 | and externally visible symbols. */ | |
2140 | ||
2141 | /*ARGSUSED*/ | |
2142 | static boolean | |
2143 | mips_elf_sym_is_global (abfd, sym) | |
5f771d47 | 2144 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2145 | asymbol *sym; |
2146 | { | |
2147 | return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false; | |
2148 | } | |
2149 | \f | |
2150 | /* Set the right machine number for a MIPS ELF file. This is used for | |
2151 | both the 32-bit and the 64-bit ABI. */ | |
2152 | ||
2153 | boolean | |
2154 | _bfd_mips_elf_object_p (abfd) | |
2155 | bfd *abfd; | |
2156 | { | |
103186c6 | 2157 | /* Irix 5 and 6 is broken. Object file symbol tables are not always |
252b5132 RH |
2158 | sorted correctly such that local symbols precede global symbols, |
2159 | and the sh_info field in the symbol table is not always right. */ | |
2160 | elf_bad_symtab (abfd) = true; | |
2161 | ||
103186c6 MM |
2162 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, |
2163 | elf_mips_mach (elf_elfheader (abfd)->e_flags)); | |
2164 | return true; | |
252b5132 RH |
2165 | } |
2166 | ||
2167 | /* The final processing done just before writing out a MIPS ELF object | |
2168 | file. This gets the MIPS architecture right based on the machine | |
2169 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
2170 | ||
2171 | /*ARGSUSED*/ | |
2172 | void | |
2173 | _bfd_mips_elf_final_write_processing (abfd, linker) | |
2174 | bfd *abfd; | |
5f771d47 | 2175 | boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
2176 | { |
2177 | unsigned long val; | |
2178 | unsigned int i; | |
2179 | Elf_Internal_Shdr **hdrpp; | |
2180 | const char *name; | |
2181 | asection *sec; | |
2182 | ||
2183 | switch (bfd_get_mach (abfd)) | |
2184 | { | |
2185 | default: | |
2186 | case bfd_mach_mips3000: | |
2187 | val = E_MIPS_ARCH_1; | |
2188 | break; | |
2189 | ||
2190 | case bfd_mach_mips3900: | |
2191 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
2192 | break; | |
2193 | ||
2194 | case bfd_mach_mips6000: | |
2195 | val = E_MIPS_ARCH_2; | |
2196 | break; | |
2197 | ||
2198 | case bfd_mach_mips4000: | |
2199 | case bfd_mach_mips4300: | |
2200 | val = E_MIPS_ARCH_3; | |
2201 | break; | |
2202 | ||
2203 | case bfd_mach_mips4010: | |
2204 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
2205 | break; | |
2206 | ||
2207 | case bfd_mach_mips4100: | |
2208 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
2209 | break; | |
2210 | ||
2211 | case bfd_mach_mips4111: | |
2212 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
2213 | break; | |
2214 | ||
2215 | case bfd_mach_mips4650: | |
2216 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
2217 | break; | |
2218 | ||
2219 | case bfd_mach_mips8000: | |
2220 | val = E_MIPS_ARCH_4; | |
2221 | break; | |
2222 | } | |
2223 | ||
2224 | elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); | |
2225 | elf_elfheader (abfd)->e_flags |= val; | |
2226 | ||
2227 | /* Set the sh_info field for .gptab sections and other appropriate | |
2228 | info for each special section. */ | |
2229 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
2230 | i < elf_elfheader (abfd)->e_shnum; | |
2231 | i++, hdrpp++) | |
2232 | { | |
2233 | switch ((*hdrpp)->sh_type) | |
2234 | { | |
c6142e5d | 2235 | case SHT_MIPS_MSYM: |
252b5132 RH |
2236 | case SHT_MIPS_LIBLIST: |
2237 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
2238 | if (sec != NULL) | |
2239 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2240 | break; | |
2241 | ||
2242 | case SHT_MIPS_GPTAB: | |
2243 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2244 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2245 | BFD_ASSERT (name != NULL | |
2246 | && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0); | |
2247 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); | |
2248 | BFD_ASSERT (sec != NULL); | |
2249 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
2250 | break; | |
2251 | ||
2252 | case SHT_MIPS_CONTENT: | |
2253 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2254 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2255 | BFD_ASSERT (name != NULL | |
2256 | && strncmp (name, ".MIPS.content", | |
2257 | sizeof ".MIPS.content" - 1) == 0); | |
2258 | sec = bfd_get_section_by_name (abfd, | |
2259 | name + sizeof ".MIPS.content" - 1); | |
2260 | BFD_ASSERT (sec != NULL); | |
3f830999 | 2261 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; |
252b5132 RH |
2262 | break; |
2263 | ||
2264 | case SHT_MIPS_SYMBOL_LIB: | |
2265 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
2266 | if (sec != NULL) | |
2267 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2268 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
2269 | if (sec != NULL) | |
2270 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
2271 | break; | |
2272 | ||
2273 | case SHT_MIPS_EVENTS: | |
2274 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2275 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2276 | BFD_ASSERT (name != NULL); | |
2277 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0) | |
2278 | sec = bfd_get_section_by_name (abfd, | |
2279 | name + sizeof ".MIPS.events" - 1); | |
2280 | else | |
2281 | { | |
2282 | BFD_ASSERT (strncmp (name, ".MIPS.post_rel", | |
2283 | sizeof ".MIPS.post_rel" - 1) == 0); | |
2284 | sec = bfd_get_section_by_name (abfd, | |
2285 | (name | |
2286 | + sizeof ".MIPS.post_rel" - 1)); | |
2287 | } | |
2288 | BFD_ASSERT (sec != NULL); | |
2289 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2290 | break; | |
2291 | ||
2292 | } | |
2293 | } | |
2294 | } | |
2295 | \f | |
2296 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
2297 | ||
2298 | boolean | |
2299 | _bfd_mips_elf_set_private_flags (abfd, flags) | |
2300 | bfd *abfd; | |
2301 | flagword flags; | |
2302 | { | |
2303 | BFD_ASSERT (!elf_flags_init (abfd) | |
2304 | || elf_elfheader (abfd)->e_flags == flags); | |
2305 | ||
2306 | elf_elfheader (abfd)->e_flags = flags; | |
2307 | elf_flags_init (abfd) = true; | |
2308 | return true; | |
2309 | } | |
2310 | ||
2311 | /* Copy backend specific data from one object module to another */ | |
2312 | ||
2313 | boolean | |
2314 | _bfd_mips_elf_copy_private_bfd_data (ibfd, obfd) | |
2315 | bfd *ibfd; | |
2316 | bfd *obfd; | |
2317 | { | |
2318 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2319 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2320 | return true; | |
2321 | ||
2322 | BFD_ASSERT (!elf_flags_init (obfd) | |
2323 | || (elf_elfheader (obfd)->e_flags | |
2324 | == elf_elfheader (ibfd)->e_flags)); | |
2325 | ||
2326 | elf_gp (obfd) = elf_gp (ibfd); | |
2327 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
2328 | elf_flags_init (obfd) = true; | |
2329 | return true; | |
2330 | } | |
2331 | ||
2332 | /* Merge backend specific data from an object file to the output | |
2333 | object file when linking. */ | |
2334 | ||
2335 | boolean | |
2336 | _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd) | |
2337 | bfd *ibfd; | |
2338 | bfd *obfd; | |
2339 | { | |
2340 | flagword old_flags; | |
2341 | flagword new_flags; | |
2342 | boolean ok; | |
2343 | ||
2344 | /* Check if we have the same endianess */ | |
2345 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
2346 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
2347 | { | |
2348 | const char *msg; | |
2349 | ||
2350 | if (bfd_big_endian (ibfd)) | |
2351 | msg = _("%s: compiled for a big endian system and target is little endian"); | |
2352 | else | |
2353 | msg = _("%s: compiled for a little endian system and target is big endian"); | |
2354 | ||
2355 | (*_bfd_error_handler) (msg, bfd_get_filename (ibfd)); | |
2356 | ||
2357 | bfd_set_error (bfd_error_wrong_format); | |
2358 | return false; | |
2359 | } | |
2360 | ||
2361 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2362 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2363 | return true; | |
2364 | ||
2365 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2366 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
2367 | old_flags = elf_elfheader (obfd)->e_flags; | |
2368 | ||
2369 | if (! elf_flags_init (obfd)) | |
2370 | { | |
2371 | elf_flags_init (obfd) = true; | |
2372 | elf_elfheader (obfd)->e_flags = new_flags; | |
103186c6 MM |
2373 | elf_elfheader (obfd)->e_ident[EI_CLASS] |
2374 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
252b5132 RH |
2375 | |
2376 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2377 | && bfd_get_arch_info (obfd)->the_default) | |
2378 | { | |
2379 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
2380 | bfd_get_mach (ibfd))) | |
2381 | return false; | |
2382 | } | |
2383 | ||
2384 | return true; | |
2385 | } | |
2386 | ||
2387 | /* Check flag compatibility. */ | |
2388 | ||
2389 | new_flags &= ~EF_MIPS_NOREORDER; | |
2390 | old_flags &= ~EF_MIPS_NOREORDER; | |
2391 | ||
2392 | if (new_flags == old_flags) | |
2393 | return true; | |
2394 | ||
2395 | ok = true; | |
2396 | ||
2397 | if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC)) | |
2398 | { | |
2399 | new_flags &= ~EF_MIPS_PIC; | |
2400 | old_flags &= ~EF_MIPS_PIC; | |
2401 | (*_bfd_error_handler) | |
2402 | (_("%s: linking PIC files with non-PIC files"), | |
2403 | bfd_get_filename (ibfd)); | |
2404 | ok = false; | |
2405 | } | |
2406 | ||
2407 | if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC)) | |
2408 | { | |
2409 | new_flags &= ~EF_MIPS_CPIC; | |
2410 | old_flags &= ~EF_MIPS_CPIC; | |
2411 | (*_bfd_error_handler) | |
2412 | (_("%s: linking abicalls files with non-abicalls files"), | |
2413 | bfd_get_filename (ibfd)); | |
2414 | ok = false; | |
2415 | } | |
2416 | ||
2417 | /* Compare the ISA's. */ | |
2418 | if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)) | |
2419 | != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))) | |
2420 | { | |
2421 | int new_mach = new_flags & EF_MIPS_MACH; | |
2422 | int old_mach = old_flags & EF_MIPS_MACH; | |
2423 | int new_isa = elf_mips_isa (new_flags); | |
2424 | int old_isa = elf_mips_isa (old_flags); | |
2425 | ||
2426 | /* If either has no machine specified, just compare the general isa's. | |
2427 | Some combinations of machines are ok, if the isa's match. */ | |
2428 | if (! new_mach | |
2429 | || ! old_mach | |
2430 | || new_mach == old_mach | |
2431 | ) | |
2432 | { | |
2433 | /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3 | |
2434 | and -mips4 code. They will normally use the same data sizes and | |
2435 | calling conventions. */ | |
2436 | ||
2437 | if ((new_isa == 1 || new_isa == 2) | |
2438 | ? (old_isa != 1 && old_isa != 2) | |
2439 | : (old_isa == 1 || old_isa == 2)) | |
2440 | { | |
2441 | (*_bfd_error_handler) | |
2442 | (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"), | |
2443 | bfd_get_filename (ibfd), new_isa, old_isa); | |
2444 | ok = false; | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | else | |
2449 | { | |
2450 | (*_bfd_error_handler) | |
2451 | (_("%s: ISA mismatch (%d) with previous modules (%d)"), | |
2452 | bfd_get_filename (ibfd), | |
2453 | elf_mips_mach (new_flags), | |
2454 | elf_mips_mach (old_flags)); | |
2455 | ok = false; | |
2456 | } | |
2457 | ||
2458 | new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); | |
2459 | old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); | |
2460 | } | |
2461 | ||
103186c6 MM |
2462 | /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it |
2463 | does set EI_CLASS differently from any 32-bit ABI. */ | |
2464 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
2465 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
2466 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
252b5132 RH |
2467 | { |
2468 | /* Only error if both are set (to different values). */ | |
103186c6 MM |
2469 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) |
2470 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
2471 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
252b5132 RH |
2472 | { |
2473 | (*_bfd_error_handler) | |
2474 | (_("%s: ABI mismatch: linking %s module with previous %s modules"), | |
2475 | bfd_get_filename (ibfd), | |
103186c6 MM |
2476 | elf_mips_abi_name (ibfd), |
2477 | elf_mips_abi_name (obfd)); | |
252b5132 RH |
2478 | ok = false; |
2479 | } | |
2480 | new_flags &= ~EF_MIPS_ABI; | |
2481 | old_flags &= ~EF_MIPS_ABI; | |
2482 | } | |
2483 | ||
2484 | /* Warn about any other mismatches */ | |
2485 | if (new_flags != old_flags) | |
2486 | { | |
2487 | (*_bfd_error_handler) | |
2488 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
2489 | bfd_get_filename (ibfd), (unsigned long) new_flags, | |
2490 | (unsigned long) old_flags); | |
2491 | ok = false; | |
2492 | } | |
2493 | ||
2494 | if (! ok) | |
2495 | { | |
2496 | bfd_set_error (bfd_error_bad_value); | |
2497 | return false; | |
2498 | } | |
2499 | ||
2500 | return true; | |
2501 | } | |
2502 | \f | |
103186c6 | 2503 | boolean |
252b5132 RH |
2504 | _bfd_mips_elf_print_private_bfd_data (abfd, ptr) |
2505 | bfd *abfd; | |
2506 | PTR ptr; | |
2507 | { | |
2508 | FILE *file = (FILE *) ptr; | |
2509 | ||
2510 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
2511 | ||
2512 | /* Print normal ELF private data. */ | |
2513 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
2514 | ||
2515 | /* xgettext:c-format */ | |
2516 | fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
2517 | ||
2518 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
2519 | fprintf (file, _ (" [abi=O32]")); | |
2520 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
2521 | fprintf (file, _ (" [abi=O64]")); | |
2522 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
2523 | fprintf (file, _ (" [abi=EABI32]")); | |
2524 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
2525 | fprintf (file, _ (" [abi=EABI64]")); | |
2526 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
2527 | fprintf (file, _ (" [abi unknown]")); | |
103186c6 | 2528 | else if (ABI_N32_P (abfd)) |
7f7e7b68 | 2529 | fprintf (file, _ (" [abi=N32]")); |
103186c6 MM |
2530 | else if (ABI_64_P (abfd)) |
2531 | fprintf (file, _ (" [abi=64]")); | |
252b5132 RH |
2532 | else |
2533 | fprintf (file, _ (" [no abi set]")); | |
2534 | ||
2535 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
2536 | fprintf (file, _ (" [mips1]")); | |
2537 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) | |
2538 | fprintf (file, _ (" [mips2]")); | |
2539 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) | |
2540 | fprintf (file, _ (" [mips3]")); | |
2541 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) | |
2542 | fprintf (file, _ (" [mips4]")); | |
2543 | else | |
2544 | fprintf (file, _ (" [unknown ISA]")); | |
2545 | ||
2546 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) | |
2547 | fprintf (file, _ (" [32bitmode]")); | |
2548 | else | |
2549 | fprintf (file, _ (" [not 32bitmode]")); | |
2550 | ||
2551 | fputc ('\n', file); | |
2552 | ||
2553 | return true; | |
2554 | } | |
2555 | \f | |
2556 | /* Handle a MIPS specific section when reading an object file. This | |
2557 | is called when elfcode.h finds a section with an unknown type. | |
2558 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
2559 | ||
2560 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
2561 | how to. */ | |
2562 | ||
2563 | boolean | |
2564 | _bfd_mips_elf_section_from_shdr (abfd, hdr, name) | |
2565 | bfd *abfd; | |
2566 | Elf_Internal_Shdr *hdr; | |
103186c6 | 2567 | char *name; |
252b5132 RH |
2568 | { |
2569 | flagword flags = 0; | |
2570 | ||
2571 | /* There ought to be a place to keep ELF backend specific flags, but | |
2572 | at the moment there isn't one. We just keep track of the | |
2573 | sections by their name, instead. Fortunately, the ABI gives | |
2574 | suggested names for all the MIPS specific sections, so we will | |
2575 | probably get away with this. */ | |
2576 | switch (hdr->sh_type) | |
2577 | { | |
2578 | case SHT_MIPS_LIBLIST: | |
2579 | if (strcmp (name, ".liblist") != 0) | |
2580 | return false; | |
2581 | break; | |
2582 | case SHT_MIPS_MSYM: | |
c6142e5d | 2583 | if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0) |
252b5132 RH |
2584 | return false; |
2585 | break; | |
2586 | case SHT_MIPS_CONFLICT: | |
2587 | if (strcmp (name, ".conflict") != 0) | |
2588 | return false; | |
2589 | break; | |
2590 | case SHT_MIPS_GPTAB: | |
2591 | if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0) | |
2592 | return false; | |
2593 | break; | |
2594 | case SHT_MIPS_UCODE: | |
2595 | if (strcmp (name, ".ucode") != 0) | |
2596 | return false; | |
2597 | break; | |
2598 | case SHT_MIPS_DEBUG: | |
2599 | if (strcmp (name, ".mdebug") != 0) | |
2600 | return false; | |
2601 | flags = SEC_DEBUGGING; | |
2602 | break; | |
2603 | case SHT_MIPS_REGINFO: | |
2604 | if (strcmp (name, ".reginfo") != 0 | |
2605 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
2606 | return false; | |
2607 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); | |
2608 | break; | |
2609 | case SHT_MIPS_IFACE: | |
2610 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
2611 | return false; | |
2612 | break; | |
2613 | case SHT_MIPS_CONTENT: | |
2614 | if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0) | |
2615 | return false; | |
2616 | break; | |
2617 | case SHT_MIPS_OPTIONS: | |
303f629d | 2618 | if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0) |
252b5132 RH |
2619 | return false; |
2620 | break; | |
2621 | case SHT_MIPS_DWARF: | |
2622 | if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0) | |
2623 | return false; | |
2624 | break; | |
2625 | case SHT_MIPS_SYMBOL_LIB: | |
2626 | if (strcmp (name, ".MIPS.symlib") != 0) | |
2627 | return false; | |
2628 | break; | |
2629 | case SHT_MIPS_EVENTS: | |
2630 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0 | |
2631 | && strncmp (name, ".MIPS.post_rel", | |
2632 | sizeof ".MIPS.post_rel" - 1) != 0) | |
2633 | return false; | |
2634 | break; | |
2635 | default: | |
2636 | return false; | |
2637 | } | |
2638 | ||
2639 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
2640 | return false; | |
2641 | ||
2642 | if (flags) | |
2643 | { | |
2644 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
2645 | (bfd_get_section_flags (abfd, | |
2646 | hdr->bfd_section) | |
2647 | | flags))) | |
2648 | return false; | |
2649 | } | |
2650 | ||
252b5132 RH |
2651 | /* FIXME: We should record sh_info for a .gptab section. */ |
2652 | ||
2653 | /* For a .reginfo section, set the gp value in the tdata information | |
2654 | from the contents of this section. We need the gp value while | |
2655 | processing relocs, so we just get it now. The .reginfo section | |
2656 | is not used in the 64-bit MIPS ELF ABI. */ | |
2657 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
2658 | { | |
2659 | Elf32_External_RegInfo ext; | |
2660 | Elf32_RegInfo s; | |
2661 | ||
2662 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext, | |
2663 | (file_ptr) 0, sizeof ext)) | |
2664 | return false; | |
2665 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); | |
2666 | elf_gp (abfd) = s.ri_gp_value; | |
2667 | } | |
2668 | ||
2669 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
2670 | set the gp value based on what we find. We may see both | |
2671 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
2672 | they should agree. */ | |
2673 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
2674 | { | |
2675 | bfd_byte *contents, *l, *lend; | |
2676 | ||
2677 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); | |
2678 | if (contents == NULL) | |
2679 | return false; | |
2680 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, | |
2681 | (file_ptr) 0, hdr->sh_size)) | |
2682 | { | |
2683 | free (contents); | |
2684 | return false; | |
2685 | } | |
2686 | l = contents; | |
2687 | lend = contents + hdr->sh_size; | |
2688 | while (l + sizeof (Elf_External_Options) <= lend) | |
2689 | { | |
2690 | Elf_Internal_Options intopt; | |
2691 | ||
2692 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
2693 | &intopt); | |
103186c6 MM |
2694 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
2695 | { | |
2696 | Elf64_Internal_RegInfo intreg; | |
2697 | ||
2698 | bfd_mips_elf64_swap_reginfo_in | |
2699 | (abfd, | |
2700 | ((Elf64_External_RegInfo *) | |
2701 | (l + sizeof (Elf_External_Options))), | |
2702 | &intreg); | |
2703 | elf_gp (abfd) = intreg.ri_gp_value; | |
2704 | } | |
2705 | else if (intopt.kind == ODK_REGINFO) | |
252b5132 RH |
2706 | { |
2707 | Elf32_RegInfo intreg; | |
2708 | ||
2709 | bfd_mips_elf32_swap_reginfo_in | |
2710 | (abfd, | |
2711 | ((Elf32_External_RegInfo *) | |
2712 | (l + sizeof (Elf_External_Options))), | |
2713 | &intreg); | |
2714 | elf_gp (abfd) = intreg.ri_gp_value; | |
2715 | } | |
2716 | l += intopt.size; | |
2717 | } | |
2718 | free (contents); | |
2719 | } | |
2720 | ||
2721 | return true; | |
2722 | } | |
2723 | ||
2724 | /* Set the correct type for a MIPS ELF section. We do this by the | |
2725 | section name, which is a hack, but ought to work. This routine is | |
2726 | used by both the 32-bit and the 64-bit ABI. */ | |
2727 | ||
2728 | boolean | |
2729 | _bfd_mips_elf_fake_sections (abfd, hdr, sec) | |
2730 | bfd *abfd; | |
2731 | Elf32_Internal_Shdr *hdr; | |
2732 | asection *sec; | |
2733 | { | |
2734 | register const char *name; | |
2735 | ||
2736 | name = bfd_get_section_name (abfd, sec); | |
2737 | ||
2738 | if (strcmp (name, ".liblist") == 0) | |
2739 | { | |
2740 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
2741 | hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib); | |
2742 | /* The sh_link field is set in final_write_processing. */ | |
2743 | } | |
252b5132 RH |
2744 | else if (strcmp (name, ".conflict") == 0) |
2745 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
2746 | else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
2747 | { | |
2748 | hdr->sh_type = SHT_MIPS_GPTAB; | |
2749 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
2750 | /* The sh_info field is set in final_write_processing. */ | |
2751 | } | |
2752 | else if (strcmp (name, ".ucode") == 0) | |
2753 | hdr->sh_type = SHT_MIPS_UCODE; | |
2754 | else if (strcmp (name, ".mdebug") == 0) | |
2755 | { | |
2756 | hdr->sh_type = SHT_MIPS_DEBUG; | |
2757 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
2758 | entsize of 0. FIXME: Does this matter? */ | |
2759 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
2760 | hdr->sh_entsize = 0; | |
2761 | else | |
2762 | hdr->sh_entsize = 1; | |
2763 | } | |
2764 | else if (strcmp (name, ".reginfo") == 0) | |
2765 | { | |
2766 | hdr->sh_type = SHT_MIPS_REGINFO; | |
2767 | /* In a shared object on Irix 5.3, the .reginfo section has an | |
2768 | entsize of 0x18. FIXME: Does this matter? */ | |
2769 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
2770 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
2771 | else | |
2772 | hdr->sh_entsize = 1; | |
2773 | } | |
2774 | else if (SGI_COMPAT (abfd) | |
2775 | && (strcmp (name, ".hash") == 0 | |
2776 | || strcmp (name, ".dynamic") == 0 | |
2777 | || strcmp (name, ".dynstr") == 0)) | |
2778 | { | |
2779 | hdr->sh_entsize = 0; | |
2780 | #if 0 | |
2781 | /* This isn't how the Irix 6 linker behaves. */ | |
2782 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; | |
2783 | #endif | |
2784 | } | |
2785 | else if (strcmp (name, ".got") == 0 | |
303f629d | 2786 | || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0 |
252b5132 RH |
2787 | || strcmp (name, ".sdata") == 0 |
2788 | || strcmp (name, ".sbss") == 0 | |
2789 | || strcmp (name, ".lit4") == 0 | |
2790 | || strcmp (name, ".lit8") == 0) | |
2791 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
2792 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
2793 | { | |
2794 | hdr->sh_type = SHT_MIPS_IFACE; | |
2795 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2796 | } | |
3f830999 | 2797 | else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0) |
252b5132 RH |
2798 | { |
2799 | hdr->sh_type = SHT_MIPS_CONTENT; | |
3f830999 | 2800 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
252b5132 RH |
2801 | /* The sh_info field is set in final_write_processing. */ |
2802 | } | |
303f629d | 2803 | else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0) |
252b5132 RH |
2804 | { |
2805 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
2806 | hdr->sh_entsize = 1; | |
2807 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2808 | } | |
2809 | else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0) | |
2810 | hdr->sh_type = SHT_MIPS_DWARF; | |
2811 | else if (strcmp (name, ".MIPS.symlib") == 0) | |
2812 | { | |
2813 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
2814 | /* The sh_link and sh_info fields are set in | |
2815 | final_write_processing. */ | |
2816 | } | |
2817 | else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0 | |
2818 | || strncmp (name, ".MIPS.post_rel", | |
2819 | sizeof ".MIPS.post_rel" - 1) == 0) | |
2820 | { | |
2821 | hdr->sh_type = SHT_MIPS_EVENTS; | |
2822 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2823 | /* The sh_link field is set in final_write_processing. */ | |
2824 | } | |
c6142e5d MM |
2825 | else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0) |
2826 | { | |
2827 | hdr->sh_type = SHT_MIPS_MSYM; | |
2828 | hdr->sh_flags |= SHF_ALLOC; | |
2829 | hdr->sh_entsize = 8; | |
2830 | } | |
252b5132 | 2831 | |
23bc299b MM |
2832 | /* The generic elf_fake_sections will set up REL_HDR using the |
2833 | default kind of relocations. But, we may actually need both | |
2834 | kinds of relocations, so we set up the second header here. */ | |
2835 | if ((sec->flags & SEC_RELOC) != 0) | |
2836 | { | |
2837 | struct bfd_elf_section_data *esd; | |
2838 | ||
2839 | esd = elf_section_data (sec); | |
2840 | BFD_ASSERT (esd->rel_hdr2 == NULL); | |
2841 | esd->rel_hdr2 | |
2842 | = (Elf_Internal_Shdr *) bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); | |
2843 | if (!esd->rel_hdr2) | |
2844 | return false; | |
2845 | _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec, | |
2846 | !elf_section_data (sec)->use_rela_p); | |
2847 | } | |
2848 | ||
252b5132 RH |
2849 | return true; |
2850 | } | |
2851 | ||
2852 | /* Given a BFD section, try to locate the corresponding ELF section | |
2853 | index. This is used by both the 32-bit and the 64-bit ABI. | |
2854 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
2855 | but for non-PIC objects we will certainly want support for at least | |
2856 | the .scommon section. */ | |
2857 | ||
2858 | boolean | |
2859 | _bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
5f771d47 ILT |
2860 | bfd *abfd ATTRIBUTE_UNUSED; |
2861 | Elf32_Internal_Shdr *hdr ATTRIBUTE_UNUSED; | |
252b5132 RH |
2862 | asection *sec; |
2863 | int *retval; | |
2864 | { | |
2865 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
2866 | { | |
2867 | *retval = SHN_MIPS_SCOMMON; | |
2868 | return true; | |
2869 | } | |
2870 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
2871 | { | |
2872 | *retval = SHN_MIPS_ACOMMON; | |
2873 | return true; | |
2874 | } | |
2875 | return false; | |
2876 | } | |
2877 | ||
2878 | /* When are writing out the .options or .MIPS.options section, | |
2879 | remember the bytes we are writing out, so that we can install the | |
2880 | GP value in the section_processing routine. */ | |
2881 | ||
2882 | boolean | |
2883 | _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count) | |
2884 | bfd *abfd; | |
2885 | sec_ptr section; | |
2886 | PTR location; | |
2887 | file_ptr offset; | |
2888 | bfd_size_type count; | |
2889 | { | |
303f629d | 2890 | if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0) |
252b5132 RH |
2891 | { |
2892 | bfd_byte *c; | |
2893 | ||
2894 | if (elf_section_data (section) == NULL) | |
2895 | { | |
2896 | section->used_by_bfd = | |
2897 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
2898 | if (elf_section_data (section) == NULL) | |
2899 | return false; | |
2900 | } | |
2901 | c = (bfd_byte *) elf_section_data (section)->tdata; | |
2902 | if (c == NULL) | |
2903 | { | |
2904 | bfd_size_type size; | |
2905 | ||
2906 | if (section->_cooked_size != 0) | |
2907 | size = section->_cooked_size; | |
2908 | else | |
2909 | size = section->_raw_size; | |
2910 | c = (bfd_byte *) bfd_zalloc (abfd, size); | |
2911 | if (c == NULL) | |
2912 | return false; | |
2913 | elf_section_data (section)->tdata = (PTR) c; | |
2914 | } | |
2915 | ||
2916 | memcpy (c + offset, location, count); | |
2917 | } | |
2918 | ||
2919 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
2920 | count); | |
2921 | } | |
2922 | ||
2923 | /* Work over a section just before writing it out. This routine is | |
2924 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
2925 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
2926 | a better way. */ | |
2927 | ||
2928 | boolean | |
2929 | _bfd_mips_elf_section_processing (abfd, hdr) | |
2930 | bfd *abfd; | |
2931 | Elf_Internal_Shdr *hdr; | |
252b5132 | 2932 | { |
cc3bfcee ILT |
2933 | if (hdr->sh_type == SHT_MIPS_REGINFO |
2934 | && hdr->sh_size > 0) | |
252b5132 RH |
2935 | { |
2936 | bfd_byte buf[4]; | |
2937 | ||
2938 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
2939 | BFD_ASSERT (hdr->contents == NULL); | |
2940 | ||
2941 | if (bfd_seek (abfd, | |
2942 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
2943 | SEEK_SET) == -1) | |
2944 | return false; | |
2945 | bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf); | |
2946 | if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4) | |
2947 | return false; | |
2948 | } | |
2949 | ||
2950 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
2951 | && hdr->bfd_section != NULL | |
2952 | && elf_section_data (hdr->bfd_section) != NULL | |
2953 | && elf_section_data (hdr->bfd_section)->tdata != NULL) | |
2954 | { | |
2955 | bfd_byte *contents, *l, *lend; | |
2956 | ||
2957 | /* We stored the section contents in the elf_section_data tdata | |
2958 | field in the set_section_contents routine. We save the | |
2959 | section contents so that we don't have to read them again. | |
2960 | At this point we know that elf_gp is set, so we can look | |
2961 | through the section contents to see if there is an | |
2962 | ODK_REGINFO structure. */ | |
2963 | ||
2964 | contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata; | |
2965 | l = contents; | |
2966 | lend = contents + hdr->sh_size; | |
2967 | while (l + sizeof (Elf_External_Options) <= lend) | |
2968 | { | |
2969 | Elf_Internal_Options intopt; | |
2970 | ||
2971 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
2972 | &intopt); | |
103186c6 MM |
2973 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
2974 | { | |
2975 | bfd_byte buf[8]; | |
2976 | ||
2977 | if (bfd_seek (abfd, | |
2978 | (hdr->sh_offset | |
2979 | + (l - contents) | |
2980 | + sizeof (Elf_External_Options) | |
2981 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
2982 | SEEK_SET) == -1) | |
2983 | return false; | |
2984 | bfd_h_put_64 (abfd, elf_gp (abfd), buf); | |
2985 | if (bfd_write (buf, 1, 8, abfd) != 8) | |
2986 | return false; | |
2987 | } | |
2988 | else if (intopt.kind == ODK_REGINFO) | |
252b5132 RH |
2989 | { |
2990 | bfd_byte buf[4]; | |
2991 | ||
2992 | if (bfd_seek (abfd, | |
2993 | (hdr->sh_offset | |
2994 | + (l - contents) | |
2995 | + sizeof (Elf_External_Options) | |
2996 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
2997 | SEEK_SET) == -1) | |
2998 | return false; | |
2999 | bfd_h_put_32 (abfd, elf_gp (abfd), buf); | |
3000 | if (bfd_write (buf, 1, 4, abfd) != 4) | |
3001 | return false; | |
3002 | } | |
3003 | l += intopt.size; | |
3004 | } | |
3005 | } | |
3006 | ||
103186c6 MM |
3007 | if (hdr->bfd_section != NULL) |
3008 | { | |
3009 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
3010 | ||
3011 | if (strcmp (name, ".sdata") == 0 | |
3012 | || strcmp (name, ".lit8") == 0 | |
3013 | || strcmp (name, ".lit4") == 0) | |
3014 | { | |
3015 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
3016 | hdr->sh_type = SHT_PROGBITS; | |
3017 | } | |
3018 | else if (strcmp (name, ".sbss") == 0) | |
3019 | { | |
3020 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
3021 | hdr->sh_type = SHT_NOBITS; | |
3022 | } | |
3023 | else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0) | |
3024 | { | |
3025 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
3026 | hdr->sh_type = SHT_PROGBITS; | |
3027 | } | |
3028 | else if (strcmp (name, ".compact_rel") == 0) | |
3029 | { | |
3030 | hdr->sh_flags = 0; | |
3031 | hdr->sh_type = SHT_PROGBITS; | |
3032 | } | |
3033 | else if (strcmp (name, ".rtproc") == 0) | |
3034 | { | |
3035 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
3036 | { | |
3037 | unsigned int adjust; | |
3038 | ||
3039 | adjust = hdr->sh_size % hdr->sh_addralign; | |
3040 | if (adjust != 0) | |
3041 | hdr->sh_size += hdr->sh_addralign - adjust; | |
3042 | } | |
3043 | } | |
3044 | } | |
3045 | ||
3046 | return true; | |
252b5132 | 3047 | } |
103186c6 | 3048 | |
252b5132 RH |
3049 | \f |
3050 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
3051 | other is for small objects. All the small objects are kept | |
3052 | together, and then referenced via the gp pointer, which yields | |
3053 | faster assembler code. This is what we use for the small common | |
3054 | section. This approach is copied from ecoff.c. */ | |
3055 | static asection mips_elf_scom_section; | |
3056 | static asymbol mips_elf_scom_symbol; | |
3057 | static asymbol *mips_elf_scom_symbol_ptr; | |
3058 | ||
3059 | /* MIPS ELF also uses an acommon section, which represents an | |
3060 | allocated common symbol which may be overridden by a | |
3061 | definition in a shared library. */ | |
3062 | static asection mips_elf_acom_section; | |
3063 | static asymbol mips_elf_acom_symbol; | |
3064 | static asymbol *mips_elf_acom_symbol_ptr; | |
3065 | ||
3066 | /* The Irix 5 support uses two virtual sections, which represent | |
3067 | text/data symbols defined in dynamic objects. */ | |
3068 | static asection mips_elf_text_section; | |
3069 | static asection *mips_elf_text_section_ptr; | |
3070 | static asymbol mips_elf_text_symbol; | |
3071 | static asymbol *mips_elf_text_symbol_ptr; | |
3072 | ||
3073 | static asection mips_elf_data_section; | |
3074 | static asection *mips_elf_data_section_ptr; | |
3075 | static asymbol mips_elf_data_symbol; | |
3076 | static asymbol *mips_elf_data_symbol_ptr; | |
3077 | ||
3078 | /* Handle the special MIPS section numbers that a symbol may use. | |
3079 | This is used for both the 32-bit and the 64-bit ABI. */ | |
3080 | ||
3081 | void | |
3082 | _bfd_mips_elf_symbol_processing (abfd, asym) | |
3083 | bfd *abfd; | |
3084 | asymbol *asym; | |
3085 | { | |
3086 | elf_symbol_type *elfsym; | |
3087 | ||
3088 | elfsym = (elf_symbol_type *) asym; | |
3089 | switch (elfsym->internal_elf_sym.st_shndx) | |
3090 | { | |
3091 | case SHN_MIPS_ACOMMON: | |
3092 | /* This section is used in a dynamically linked executable file. | |
3093 | It is an allocated common section. The dynamic linker can | |
3094 | either resolve these symbols to something in a shared | |
3095 | library, or it can just leave them here. For our purposes, | |
3096 | we can consider these symbols to be in a new section. */ | |
3097 | if (mips_elf_acom_section.name == NULL) | |
3098 | { | |
3099 | /* Initialize the acommon section. */ | |
3100 | mips_elf_acom_section.name = ".acommon"; | |
3101 | mips_elf_acom_section.flags = SEC_ALLOC; | |
3102 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
3103 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
3104 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
3105 | mips_elf_acom_symbol.name = ".acommon"; | |
3106 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
3107 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
3108 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
3109 | } | |
3110 | asym->section = &mips_elf_acom_section; | |
3111 | break; | |
3112 | ||
3113 | case SHN_COMMON: | |
3114 | /* Common symbols less than the GP size are automatically | |
7403cb63 MM |
3115 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ |
3116 | if (asym->value > elf_gp_size (abfd) | |
3117 | || IRIX_COMPAT (abfd) == ict_irix6) | |
252b5132 RH |
3118 | break; |
3119 | /* Fall through. */ | |
3120 | case SHN_MIPS_SCOMMON: | |
3121 | if (mips_elf_scom_section.name == NULL) | |
3122 | { | |
3123 | /* Initialize the small common section. */ | |
3124 | mips_elf_scom_section.name = ".scommon"; | |
3125 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
3126 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
3127 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
3128 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
3129 | mips_elf_scom_symbol.name = ".scommon"; | |
3130 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
3131 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
3132 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
3133 | } | |
3134 | asym->section = &mips_elf_scom_section; | |
3135 | asym->value = elfsym->internal_elf_sym.st_size; | |
3136 | break; | |
3137 | ||
3138 | case SHN_MIPS_SUNDEFINED: | |
3139 | asym->section = bfd_und_section_ptr; | |
3140 | break; | |
3141 | ||
3142 | #if 0 /* for SGI_COMPAT */ | |
3143 | case SHN_MIPS_TEXT: | |
3144 | asym->section = mips_elf_text_section_ptr; | |
3145 | break; | |
3146 | ||
3147 | case SHN_MIPS_DATA: | |
3148 | asym->section = mips_elf_data_section_ptr; | |
3149 | break; | |
3150 | #endif | |
3151 | } | |
3152 | } | |
3153 | \f | |
3154 | /* When creating an Irix 5 executable, we need REGINFO and RTPROC | |
3155 | segments. */ | |
3156 | ||
103186c6 MM |
3157 | int |
3158 | _bfd_mips_elf_additional_program_headers (abfd) | |
252b5132 RH |
3159 | bfd *abfd; |
3160 | { | |
3161 | asection *s; | |
303f629d | 3162 | int ret = 0; |
252b5132 | 3163 | |
303f629d MM |
3164 | if (!SGI_COMPAT (abfd)) |
3165 | return 0; | |
252b5132 | 3166 | |
303f629d | 3167 | /* See if we need a PT_MIPS_REGINFO segment. */ |
252b5132 | 3168 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
303f629d MM |
3169 | if (s && (s->flags & SEC_LOAD)) |
3170 | ++ret; | |
252b5132 | 3171 | |
303f629d MM |
3172 | /* See if we need a PT_MIPS_OPTIONS segment. */ |
3173 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
3174 | && bfd_get_section_by_name (abfd, | |
3175 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
3176 | ++ret; | |
3177 | ||
3178 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
3179 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
3180 | && bfd_get_section_by_name (abfd, ".dynamic") | |
3181 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
3182 | ++ret; | |
252b5132 RH |
3183 | |
3184 | return ret; | |
3185 | } | |
3186 | ||
3187 | /* Modify the segment map for an Irix 5 executable. */ | |
3188 | ||
103186c6 MM |
3189 | boolean |
3190 | _bfd_mips_elf_modify_segment_map (abfd) | |
252b5132 RH |
3191 | bfd *abfd; |
3192 | { | |
3193 | asection *s; | |
3194 | struct elf_segment_map *m, **pm; | |
3195 | ||
3196 | if (! SGI_COMPAT (abfd)) | |
3197 | return true; | |
3198 | ||
3199 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
3200 | segment. */ | |
3201 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
3202 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3203 | { | |
3204 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
3205 | if (m->p_type == PT_MIPS_REGINFO) | |
3206 | break; | |
3207 | if (m == NULL) | |
3208 | { | |
3209 | m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); | |
3210 | if (m == NULL) | |
3211 | return false; | |
3212 | ||
3213 | m->p_type = PT_MIPS_REGINFO; | |
3214 | m->count = 1; | |
3215 | m->sections[0] = s; | |
3216 | ||
3217 | /* We want to put it after the PHDR and INTERP segments. */ | |
3218 | pm = &elf_tdata (abfd)->segment_map; | |
3219 | while (*pm != NULL | |
3220 | && ((*pm)->p_type == PT_PHDR | |
3221 | || (*pm)->p_type == PT_INTERP)) | |
3222 | pm = &(*pm)->next; | |
3223 | ||
3224 | m->next = *pm; | |
3225 | *pm = m; | |
3226 | } | |
3227 | } | |
3228 | ||
303f629d MM |
3229 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but |
3230 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
3231 | PT_OPTIONS segement immediately following the program header | |
3232 | table. */ | |
3233 | if (IRIX_COMPAT (abfd) == ict_irix6) | |
252b5132 | 3234 | { |
303f629d MM |
3235 | asection *s; |
3236 | ||
3237 | for (s = abfd->sections; s; s = s->next) | |
3238 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
252b5132 | 3239 | break; |
303f629d MM |
3240 | |
3241 | if (s) | |
252b5132 | 3242 | { |
303f629d MM |
3243 | struct elf_segment_map *options_segment; |
3244 | ||
3245 | for (m = elf_tdata (abfd)->segment_map; m; m = m->next) | |
3246 | if (m->p_type == PT_PHDR) | |
3247 | break; | |
3248 | ||
3249 | /* There should always be a program header table. */ | |
252b5132 RH |
3250 | if (m == NULL) |
3251 | return false; | |
3252 | ||
303f629d MM |
3253 | options_segment = bfd_zalloc (abfd, |
3254 | sizeof (struct elf_segment_map)); | |
3255 | options_segment->next = m->next; | |
3256 | options_segment->p_type = PT_MIPS_OPTIONS; | |
3257 | options_segment->p_flags = PF_R; | |
3258 | options_segment->p_flags_valid = true; | |
3259 | options_segment->count = 1; | |
3260 | options_segment->sections[0] = s; | |
3261 | m->next = options_segment; | |
3262 | } | |
3263 | } | |
3264 | else | |
3265 | { | |
3266 | /* If there are .dynamic and .mdebug sections, we make a room | |
3267 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
3268 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
3269 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
3270 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
3271 | { | |
3272 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
3273 | if (m->p_type == PT_MIPS_RTPROC) | |
3274 | break; | |
3275 | if (m == NULL) | |
252b5132 | 3276 | { |
303f629d MM |
3277 | m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); |
3278 | if (m == NULL) | |
3279 | return false; | |
252b5132 | 3280 | |
303f629d | 3281 | m->p_type = PT_MIPS_RTPROC; |
252b5132 | 3282 | |
303f629d MM |
3283 | s = bfd_get_section_by_name (abfd, ".rtproc"); |
3284 | if (s == NULL) | |
3285 | { | |
3286 | m->count = 0; | |
3287 | m->p_flags = 0; | |
3288 | m->p_flags_valid = 1; | |
3289 | } | |
3290 | else | |
3291 | { | |
3292 | m->count = 1; | |
3293 | m->sections[0] = s; | |
3294 | } | |
3295 | ||
3296 | /* We want to put it after the DYNAMIC segment. */ | |
3297 | pm = &elf_tdata (abfd)->segment_map; | |
3298 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
3299 | pm = &(*pm)->next; | |
3300 | if (*pm != NULL) | |
3301 | pm = &(*pm)->next; | |
3302 | ||
3303 | m->next = *pm; | |
3304 | *pm = m; | |
3305 | } | |
252b5132 | 3306 | } |
252b5132 | 3307 | |
303f629d MM |
3308 | /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, |
3309 | .dynstr, .dynsym, and .hash sections, and everything in | |
3310 | between. */ | |
3311 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
3312 | if ((*pm)->p_type == PT_DYNAMIC) | |
3313 | break; | |
3314 | m = *pm; | |
3315 | if (m != NULL | |
3316 | && m->count == 1 | |
3317 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
252b5132 | 3318 | { |
303f629d MM |
3319 | static const char *sec_names[] = |
3320 | { ".dynamic", ".dynstr", ".dynsym", ".hash" }; | |
3321 | bfd_vma low, high; | |
3322 | unsigned int i, c; | |
3323 | struct elf_segment_map *n; | |
3324 | ||
3325 | low = 0xffffffff; | |
3326 | high = 0; | |
3327 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
252b5132 | 3328 | { |
303f629d MM |
3329 | s = bfd_get_section_by_name (abfd, sec_names[i]); |
3330 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3331 | { | |
3332 | bfd_size_type sz; | |
3333 | ||
3334 | if (low > s->vma) | |
3335 | low = s->vma; | |
3336 | sz = s->_cooked_size; | |
3337 | if (sz == 0) | |
3338 | sz = s->_raw_size; | |
3339 | if (high < s->vma + sz) | |
3340 | high = s->vma + sz; | |
3341 | } | |
252b5132 | 3342 | } |
252b5132 | 3343 | |
303f629d MM |
3344 | c = 0; |
3345 | for (s = abfd->sections; s != NULL; s = s->next) | |
3346 | if ((s->flags & SEC_LOAD) != 0 | |
3347 | && s->vma >= low | |
3348 | && ((s->vma | |
3349 | + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) | |
3350 | <= high)) | |
3351 | ++c; | |
3352 | ||
3353 | n = ((struct elf_segment_map *) | |
3354 | bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *))); | |
3355 | if (n == NULL) | |
3356 | return false; | |
3357 | *n = *m; | |
3358 | n->count = c; | |
252b5132 | 3359 | |
303f629d MM |
3360 | i = 0; |
3361 | for (s = abfd->sections; s != NULL; s = s->next) | |
252b5132 | 3362 | { |
303f629d MM |
3363 | if ((s->flags & SEC_LOAD) != 0 |
3364 | && s->vma >= low | |
3365 | && ((s->vma | |
3366 | + (s->_cooked_size != 0 ? | |
3367 | s->_cooked_size : s->_raw_size)) | |
3368 | <= high)) | |
3369 | { | |
3370 | n->sections[i] = s; | |
3371 | ++i; | |
3372 | } | |
252b5132 | 3373 | } |
252b5132 | 3374 | |
303f629d MM |
3375 | *pm = n; |
3376 | } | |
252b5132 RH |
3377 | } |
3378 | ||
3379 | return true; | |
3380 | } | |
3381 | \f | |
3382 | /* The structure of the runtime procedure descriptor created by the | |
3383 | loader for use by the static exception system. */ | |
3384 | ||
3385 | typedef struct runtime_pdr { | |
3386 | bfd_vma adr; /* memory address of start of procedure */ | |
3387 | long regmask; /* save register mask */ | |
3388 | long regoffset; /* save register offset */ | |
3389 | long fregmask; /* save floating point register mask */ | |
3390 | long fregoffset; /* save floating point register offset */ | |
3391 | long frameoffset; /* frame size */ | |
3392 | short framereg; /* frame pointer register */ | |
3393 | short pcreg; /* offset or reg of return pc */ | |
3394 | long irpss; /* index into the runtime string table */ | |
3395 | long reserved; | |
3396 | struct exception_info *exception_info;/* pointer to exception array */ | |
3397 | } RPDR, *pRPDR; | |
3398 | #define cbRPDR sizeof(RPDR) | |
3399 | #define rpdNil ((pRPDR) 0) | |
3400 | ||
3401 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
3402 | ||
3403 | static void ecoff_swap_rpdr_out | |
3404 | PARAMS ((bfd *, const RPDR *, struct rpdr_ext *)); | |
3405 | ||
3406 | static void | |
3407 | ecoff_swap_rpdr_out (abfd, in, ex) | |
3408 | bfd *abfd; | |
3409 | const RPDR *in; | |
3410 | struct rpdr_ext *ex; | |
3411 | { | |
3412 | /* ecoff_put_off was defined in ecoffswap.h. */ | |
3413 | ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr); | |
3414 | bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask); | |
3415 | bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset); | |
3416 | bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask); | |
3417 | bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset); | |
3418 | bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset); | |
3419 | ||
3420 | bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg); | |
3421 | bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg); | |
3422 | ||
3423 | bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss); | |
3424 | #if 0 /* FIXME */ | |
3425 | ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info); | |
3426 | #endif | |
3427 | } | |
3428 | \f | |
3429 | /* Read ECOFF debugging information from a .mdebug section into a | |
3430 | ecoff_debug_info structure. */ | |
3431 | ||
3432 | boolean | |
3433 | _bfd_mips_elf_read_ecoff_info (abfd, section, debug) | |
3434 | bfd *abfd; | |
3435 | asection *section; | |
3436 | struct ecoff_debug_info *debug; | |
3437 | { | |
3438 | HDRR *symhdr; | |
3439 | const struct ecoff_debug_swap *swap; | |
3440 | char *ext_hdr = NULL; | |
3441 | ||
3442 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3443 | memset (debug, 0, sizeof(*debug)); | |
3444 | ||
3445 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); | |
3446 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
3447 | goto error_return; | |
3448 | ||
3449 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
3450 | swap->external_hdr_size) | |
3451 | == false) | |
3452 | goto error_return; | |
3453 | ||
3454 | symhdr = &debug->symbolic_header; | |
3455 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
3456 | ||
3457 | /* The symbolic header contains absolute file offsets and sizes to | |
3458 | read. */ | |
3459 | #define READ(ptr, offset, count, size, type) \ | |
3460 | if (symhdr->count == 0) \ | |
3461 | debug->ptr = NULL; \ | |
3462 | else \ | |
3463 | { \ | |
3464 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ | |
3465 | if (debug->ptr == NULL) \ | |
3466 | goto error_return; \ | |
3467 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
3468 | || (bfd_read (debug->ptr, size, symhdr->count, \ | |
3469 | abfd) != size * symhdr->count)) \ | |
3470 | goto error_return; \ | |
3471 | } | |
3472 | ||
3473 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
3474 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
3475 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
3476 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
3477 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
3478 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
3479 | union aux_ext *); | |
3480 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
3481 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
3482 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
3483 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
3484 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
3485 | #undef READ | |
3486 | ||
3487 | debug->fdr = NULL; | |
3488 | debug->adjust = NULL; | |
3489 | ||
3490 | return true; | |
3491 | ||
3492 | error_return: | |
3493 | if (ext_hdr != NULL) | |
3494 | free (ext_hdr); | |
3495 | if (debug->line != NULL) | |
3496 | free (debug->line); | |
3497 | if (debug->external_dnr != NULL) | |
3498 | free (debug->external_dnr); | |
3499 | if (debug->external_pdr != NULL) | |
3500 | free (debug->external_pdr); | |
3501 | if (debug->external_sym != NULL) | |
3502 | free (debug->external_sym); | |
3503 | if (debug->external_opt != NULL) | |
3504 | free (debug->external_opt); | |
3505 | if (debug->external_aux != NULL) | |
3506 | free (debug->external_aux); | |
3507 | if (debug->ss != NULL) | |
3508 | free (debug->ss); | |
3509 | if (debug->ssext != NULL) | |
3510 | free (debug->ssext); | |
3511 | if (debug->external_fdr != NULL) | |
3512 | free (debug->external_fdr); | |
3513 | if (debug->external_rfd != NULL) | |
3514 | free (debug->external_rfd); | |
3515 | if (debug->external_ext != NULL) | |
3516 | free (debug->external_ext); | |
3517 | return false; | |
3518 | } | |
3519 | \f | |
3520 | /* MIPS ELF local labels start with '$', not 'L'. */ | |
3521 | ||
3522 | /*ARGSUSED*/ | |
3523 | static boolean | |
3524 | mips_elf_is_local_label_name (abfd, name) | |
3525 | bfd *abfd; | |
3526 | const char *name; | |
3527 | { | |
3528 | if (name[0] == '$') | |
3529 | return true; | |
3530 | ||
3531 | /* On Irix 6, the labels go back to starting with '.', so we accept | |
3532 | the generic ELF local label syntax as well. */ | |
3533 | return _bfd_elf_is_local_label_name (abfd, name); | |
3534 | } | |
3535 | ||
3536 | /* MIPS ELF uses a special find_nearest_line routine in order the | |
3537 | handle the ECOFF debugging information. */ | |
3538 | ||
3539 | struct mips_elf_find_line | |
3540 | { | |
3541 | struct ecoff_debug_info d; | |
3542 | struct ecoff_find_line i; | |
3543 | }; | |
3544 | ||
3545 | boolean | |
3546 | _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
3547 | functionname_ptr, line_ptr) | |
3548 | bfd *abfd; | |
3549 | asection *section; | |
3550 | asymbol **symbols; | |
3551 | bfd_vma offset; | |
3552 | const char **filename_ptr; | |
3553 | const char **functionname_ptr; | |
3554 | unsigned int *line_ptr; | |
3555 | { | |
3556 | asection *msec; | |
3557 | ||
3558 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
3559 | filename_ptr, functionname_ptr, | |
3560 | line_ptr)) | |
3561 | return true; | |
3562 | ||
3563 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
3564 | filename_ptr, functionname_ptr, | |
5e38c3b8 MM |
3565 | line_ptr, |
3566 | ABI_64_P (abfd) ? 8 : 0)) | |
252b5132 RH |
3567 | return true; |
3568 | ||
3569 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
3570 | if (msec != NULL) | |
3571 | { | |
3572 | flagword origflags; | |
3573 | struct mips_elf_find_line *fi; | |
3574 | const struct ecoff_debug_swap * const swap = | |
3575 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3576 | ||
3577 | /* If we are called during a link, mips_elf_final_link may have | |
3578 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
3579 | if appropriate (which it normally will be). */ | |
3580 | origflags = msec->flags; | |
3581 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
3582 | msec->flags |= SEC_HAS_CONTENTS; | |
3583 | ||
3584 | fi = elf_tdata (abfd)->find_line_info; | |
3585 | if (fi == NULL) | |
3586 | { | |
3587 | bfd_size_type external_fdr_size; | |
3588 | char *fraw_src; | |
3589 | char *fraw_end; | |
3590 | struct fdr *fdr_ptr; | |
3591 | ||
3592 | fi = ((struct mips_elf_find_line *) | |
3593 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); | |
3594 | if (fi == NULL) | |
3595 | { | |
3596 | msec->flags = origflags; | |
3597 | return false; | |
3598 | } | |
3599 | ||
3600 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
3601 | { | |
3602 | msec->flags = origflags; | |
3603 | return false; | |
3604 | } | |
3605 | ||
3606 | /* Swap in the FDR information. */ | |
3607 | fi->d.fdr = ((struct fdr *) | |
3608 | bfd_alloc (abfd, | |
3609 | (fi->d.symbolic_header.ifdMax * | |
3610 | sizeof (struct fdr)))); | |
3611 | if (fi->d.fdr == NULL) | |
3612 | { | |
3613 | msec->flags = origflags; | |
3614 | return false; | |
3615 | } | |
3616 | external_fdr_size = swap->external_fdr_size; | |
3617 | fdr_ptr = fi->d.fdr; | |
3618 | fraw_src = (char *) fi->d.external_fdr; | |
3619 | fraw_end = (fraw_src | |
3620 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
3621 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
3622 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
3623 | ||
3624 | elf_tdata (abfd)->find_line_info = fi; | |
3625 | ||
3626 | /* Note that we don't bother to ever free this information. | |
3627 | find_nearest_line is either called all the time, as in | |
3628 | objdump -l, so the information should be saved, or it is | |
3629 | rarely called, as in ld error messages, so the memory | |
3630 | wasted is unimportant. Still, it would probably be a | |
3631 | good idea for free_cached_info to throw it away. */ | |
3632 | } | |
3633 | ||
3634 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
3635 | &fi->i, filename_ptr, functionname_ptr, | |
3636 | line_ptr)) | |
3637 | { | |
3638 | msec->flags = origflags; | |
3639 | return true; | |
3640 | } | |
3641 | ||
3642 | msec->flags = origflags; | |
3643 | } | |
3644 | ||
3645 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
3646 | ||
3647 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
3648 | filename_ptr, functionname_ptr, | |
3649 | line_ptr); | |
3650 | } | |
3651 | \f | |
3652 | /* The mips16 compiler uses a couple of special sections to handle | |
3653 | floating point arguments. | |
3654 | ||
3655 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
3656 | copy floating point arguments from the fp regs to the gp regs and | |
3657 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
3658 | call should be redirected to the stub instead. If no 32 bit | |
3659 | function calls FNNAME, the stub should be discarded. We need to | |
3660 | consider any reference to the function, not just a call, because | |
3661 | if the address of the function is taken we will need the stub, | |
3662 | since the address might be passed to a 32 bit function. | |
3663 | ||
3664 | Section names that look like .mips16.call.FNNAME contain stubs | |
3665 | that copy floating point arguments from the gp regs to the fp | |
3666 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
3667 | then any 16 bit function that calls FNNAME should be redirected | |
3668 | to the stub instead. If FNNAME is not a 32 bit function, the | |
3669 | stub should be discarded. | |
3670 | ||
3671 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
3672 | which call FNNAME and then copy the return value from the fp regs | |
3673 | to the gp regs. These stubs store the return value in $18 while | |
3674 | calling FNNAME; any function which might call one of these stubs | |
3675 | must arrange to save $18 around the call. (This case is not | |
3676 | needed for 32 bit functions that call 16 bit functions, because | |
3677 | 16 bit functions always return floating point values in both | |
3678 | $f0/$f1 and $2/$3.) | |
3679 | ||
3680 | Note that in all cases FNNAME might be defined statically. | |
3681 | Therefore, FNNAME is not used literally. Instead, the relocation | |
3682 | information will indicate which symbol the section is for. | |
3683 | ||
3684 | We record any stubs that we find in the symbol table. */ | |
3685 | ||
3686 | #define FN_STUB ".mips16.fn." | |
3687 | #define CALL_STUB ".mips16.call." | |
3688 | #define CALL_FP_STUB ".mips16.call.fp." | |
3689 | ||
252b5132 RH |
3690 | /* MIPS ELF linker hash table. */ |
3691 | ||
3692 | struct mips_elf_link_hash_table | |
3693 | { | |
3694 | struct elf_link_hash_table root; | |
3695 | #if 0 | |
3696 | /* We no longer use this. */ | |
3697 | /* String section indices for the dynamic section symbols. */ | |
3698 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
3699 | #endif | |
3700 | /* The number of .rtproc entries. */ | |
3701 | bfd_size_type procedure_count; | |
3702 | /* The size of the .compact_rel section (if SGI_COMPAT). */ | |
3703 | bfd_size_type compact_rel_size; | |
3704 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic | |
3705 | entry is set to the address of __rld_obj_head as in Irix 5. */ | |
3706 | boolean use_rld_obj_head; | |
3707 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ | |
3708 | bfd_vma rld_value; | |
3709 | /* This is set if we see any mips16 stub sections. */ | |
3710 | boolean mips16_stubs_seen; | |
3711 | }; | |
3712 | ||
3713 | /* Look up an entry in a MIPS ELF linker hash table. */ | |
3714 | ||
3715 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
3716 | ((struct mips_elf_link_hash_entry *) \ | |
3717 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
3718 | (copy), (follow))) | |
3719 | ||
3720 | /* Traverse a MIPS ELF linker hash table. */ | |
3721 | ||
3722 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
3723 | (elf_link_hash_traverse \ | |
3724 | (&(table)->root, \ | |
3725 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
3726 | (info))) | |
3727 | ||
3728 | /* Get the MIPS ELF linker hash table from a link_info structure. */ | |
3729 | ||
3730 | #define mips_elf_hash_table(p) \ | |
3731 | ((struct mips_elf_link_hash_table *) ((p)->hash)) | |
3732 | ||
3733 | static boolean mips_elf_output_extsym | |
3734 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
3735 | ||
3736 | /* Create an entry in a MIPS ELF linker hash table. */ | |
3737 | ||
3738 | static struct bfd_hash_entry * | |
3739 | mips_elf_link_hash_newfunc (entry, table, string) | |
3740 | struct bfd_hash_entry *entry; | |
3741 | struct bfd_hash_table *table; | |
3742 | const char *string; | |
3743 | { | |
3744 | struct mips_elf_link_hash_entry *ret = | |
3745 | (struct mips_elf_link_hash_entry *) entry; | |
3746 | ||
3747 | /* Allocate the structure if it has not already been allocated by a | |
3748 | subclass. */ | |
3749 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
3750 | ret = ((struct mips_elf_link_hash_entry *) | |
3751 | bfd_hash_allocate (table, | |
3752 | sizeof (struct mips_elf_link_hash_entry))); | |
3753 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
3754 | return (struct bfd_hash_entry *) ret; | |
3755 | ||
3756 | /* Call the allocation method of the superclass. */ | |
3757 | ret = ((struct mips_elf_link_hash_entry *) | |
3758 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3759 | table, string)); | |
3760 | if (ret != (struct mips_elf_link_hash_entry *) NULL) | |
3761 | { | |
3762 | /* Set local fields. */ | |
3763 | memset (&ret->esym, 0, sizeof (EXTR)); | |
3764 | /* We use -2 as a marker to indicate that the information has | |
3765 | not been set. -1 means there is no associated ifd. */ | |
3766 | ret->esym.ifd = -2; | |
a3c7651d | 3767 | ret->possibly_dynamic_relocs = 0; |
c6142e5d | 3768 | ret->min_dyn_reloc_index = 0; |
252b5132 RH |
3769 | ret->fn_stub = NULL; |
3770 | ret->need_fn_stub = false; | |
3771 | ret->call_stub = NULL; | |
3772 | ret->call_fp_stub = NULL; | |
3773 | } | |
3774 | ||
3775 | return (struct bfd_hash_entry *) ret; | |
3776 | } | |
3777 | ||
3778 | /* Create a MIPS ELF linker hash table. */ | |
3779 | ||
103186c6 MM |
3780 | struct bfd_link_hash_table * |
3781 | _bfd_mips_elf_link_hash_table_create (abfd) | |
252b5132 RH |
3782 | bfd *abfd; |
3783 | { | |
3784 | struct mips_elf_link_hash_table *ret; | |
3785 | ||
3786 | ret = ((struct mips_elf_link_hash_table *) | |
3787 | bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table))); | |
3788 | if (ret == (struct mips_elf_link_hash_table *) NULL) | |
3789 | return NULL; | |
3790 | ||
3791 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3792 | mips_elf_link_hash_newfunc)) | |
3793 | { | |
3794 | bfd_release (abfd, ret); | |
3795 | return NULL; | |
3796 | } | |
3797 | ||
3798 | #if 0 | |
3799 | /* We no longer use this. */ | |
3800 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
3801 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
3802 | #endif | |
3803 | ret->procedure_count = 0; | |
3804 | ret->compact_rel_size = 0; | |
3805 | ret->use_rld_obj_head = false; | |
3806 | ret->rld_value = 0; | |
3807 | ret->mips16_stubs_seen = false; | |
3808 | ||
3809 | return &ret->root.root; | |
3810 | } | |
3811 | ||
3812 | /* Hook called by the linker routine which adds symbols from an object | |
3813 | file. We must handle the special MIPS section numbers here. */ | |
3814 | ||
3815 | /*ARGSUSED*/ | |
103186c6 MM |
3816 | boolean |
3817 | _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
252b5132 RH |
3818 | bfd *abfd; |
3819 | struct bfd_link_info *info; | |
3820 | const Elf_Internal_Sym *sym; | |
3821 | const char **namep; | |
5f771d47 | 3822 | flagword *flagsp ATTRIBUTE_UNUSED; |
252b5132 RH |
3823 | asection **secp; |
3824 | bfd_vma *valp; | |
3825 | { | |
3826 | if (SGI_COMPAT (abfd) | |
3827 | && (abfd->flags & DYNAMIC) != 0 | |
3828 | && strcmp (*namep, "_rld_new_interface") == 0) | |
3829 | { | |
3830 | /* Skip Irix 5 rld entry name. */ | |
3831 | *namep = NULL; | |
3832 | return true; | |
3833 | } | |
3834 | ||
3835 | switch (sym->st_shndx) | |
3836 | { | |
3837 | case SHN_COMMON: | |
3838 | /* Common symbols less than the GP size are automatically | |
3839 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7403cb63 MM |
3840 | if (sym->st_size > elf_gp_size (abfd) |
3841 | || IRIX_COMPAT (abfd) == ict_irix6) | |
252b5132 RH |
3842 | break; |
3843 | /* Fall through. */ | |
3844 | case SHN_MIPS_SCOMMON: | |
3845 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
3846 | (*secp)->flags |= SEC_IS_COMMON; | |
3847 | *valp = sym->st_size; | |
3848 | break; | |
3849 | ||
3850 | case SHN_MIPS_TEXT: | |
3851 | /* This section is used in a shared object. */ | |
3852 | if (mips_elf_text_section_ptr == NULL) | |
3853 | { | |
3854 | /* Initialize the section. */ | |
3855 | mips_elf_text_section.name = ".text"; | |
3856 | mips_elf_text_section.flags = SEC_NO_FLAGS; | |
3857 | mips_elf_text_section.output_section = NULL; | |
3858 | mips_elf_text_section.symbol = &mips_elf_text_symbol; | |
3859 | mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr; | |
3860 | mips_elf_text_symbol.name = ".text"; | |
3861 | mips_elf_text_symbol.flags = BSF_SECTION_SYM; | |
3862 | mips_elf_text_symbol.section = &mips_elf_text_section; | |
3863 | mips_elf_text_symbol_ptr = &mips_elf_text_symbol; | |
3864 | mips_elf_text_section_ptr = &mips_elf_text_section; | |
3865 | } | |
3866 | /* This code used to do *secp = bfd_und_section_ptr if | |
3867 | info->shared. I don't know why, and that doesn't make sense, | |
3868 | so I took it out. */ | |
3869 | *secp = mips_elf_text_section_ptr; | |
3870 | break; | |
3871 | ||
3872 | case SHN_MIPS_ACOMMON: | |
3873 | /* Fall through. XXX Can we treat this as allocated data? */ | |
3874 | case SHN_MIPS_DATA: | |
3875 | /* This section is used in a shared object. */ | |
3876 | if (mips_elf_data_section_ptr == NULL) | |
3877 | { | |
3878 | /* Initialize the section. */ | |
3879 | mips_elf_data_section.name = ".data"; | |
3880 | mips_elf_data_section.flags = SEC_NO_FLAGS; | |
3881 | mips_elf_data_section.output_section = NULL; | |
3882 | mips_elf_data_section.symbol = &mips_elf_data_symbol; | |
3883 | mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr; | |
3884 | mips_elf_data_symbol.name = ".data"; | |
3885 | mips_elf_data_symbol.flags = BSF_SECTION_SYM; | |
3886 | mips_elf_data_symbol.section = &mips_elf_data_section; | |
3887 | mips_elf_data_symbol_ptr = &mips_elf_data_symbol; | |
3888 | mips_elf_data_section_ptr = &mips_elf_data_section; | |
3889 | } | |
3890 | /* This code used to do *secp = bfd_und_section_ptr if | |
3891 | info->shared. I don't know why, and that doesn't make sense, | |
3892 | so I took it out. */ | |
3893 | *secp = mips_elf_data_section_ptr; | |
3894 | break; | |
3895 | ||
3896 | case SHN_MIPS_SUNDEFINED: | |
3897 | *secp = bfd_und_section_ptr; | |
3898 | break; | |
3899 | } | |
3900 | ||
3901 | if (SGI_COMPAT (abfd) | |
3902 | && ! info->shared | |
3903 | && info->hash->creator == abfd->xvec | |
3904 | && strcmp (*namep, "__rld_obj_head") == 0) | |
3905 | { | |
3906 | struct elf_link_hash_entry *h; | |
3907 | ||
3908 | /* Mark __rld_obj_head as dynamic. */ | |
3909 | h = NULL; | |
3910 | if (! (_bfd_generic_link_add_one_symbol | |
3911 | (info, abfd, *namep, BSF_GLOBAL, *secp, | |
3912 | (bfd_vma) *valp, (const char *) NULL, false, | |
3913 | get_elf_backend_data (abfd)->collect, | |
3914 | (struct bfd_link_hash_entry **) &h))) | |
3915 | return false; | |
3916 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
3917 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3918 | h->type = STT_OBJECT; | |
3919 | ||
3920 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
3921 | return false; | |
3922 | ||
3923 | mips_elf_hash_table (info)->use_rld_obj_head = true; | |
3924 | } | |
3925 | ||
3926 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
3927 | odd. This will cause something like .word SYM to come up with | |
3928 | the right value when it is loaded into the PC. */ | |
3929 | if (sym->st_other == STO_MIPS16) | |
3930 | ++*valp; | |
3931 | ||
3932 | return true; | |
3933 | } | |
3934 | ||
3935 | /* Structure used to pass information to mips_elf_output_extsym. */ | |
3936 | ||
3937 | struct extsym_info | |
3938 | { | |
3939 | bfd *abfd; | |
3940 | struct bfd_link_info *info; | |
3941 | struct ecoff_debug_info *debug; | |
3942 | const struct ecoff_debug_swap *swap; | |
3943 | boolean failed; | |
3944 | }; | |
3945 | ||
3946 | /* This routine is used to write out ECOFF debugging external symbol | |
3947 | information. It is called via mips_elf_link_hash_traverse. The | |
3948 | ECOFF external symbol information must match the ELF external | |
3949 | symbol information. Unfortunately, at this point we don't know | |
3950 | whether a symbol is required by reloc information, so the two | |
3951 | tables may wind up being different. We must sort out the external | |
3952 | symbol information before we can set the final size of the .mdebug | |
3953 | section, and we must set the size of the .mdebug section before we | |
3954 | can relocate any sections, and we can't know which symbols are | |
3955 | required by relocation until we relocate the sections. | |
3956 | Fortunately, it is relatively unlikely that any symbol will be | |
3957 | stripped but required by a reloc. In particular, it can not happen | |
3958 | when generating a final executable. */ | |
3959 | ||
3960 | static boolean | |
3961 | mips_elf_output_extsym (h, data) | |
3962 | struct mips_elf_link_hash_entry *h; | |
3963 | PTR data; | |
3964 | { | |
3965 | struct extsym_info *einfo = (struct extsym_info *) data; | |
3966 | boolean strip; | |
3967 | asection *sec, *output_section; | |
3968 | ||
3969 | if (h->root.indx == -2) | |
3970 | strip = false; | |
3971 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3972 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
3973 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3974 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
3975 | strip = true; | |
3976 | else if (einfo->info->strip == strip_all | |
3977 | || (einfo->info->strip == strip_some | |
3978 | && bfd_hash_lookup (einfo->info->keep_hash, | |
3979 | h->root.root.root.string, | |
3980 | false, false) == NULL)) | |
3981 | strip = true; | |
3982 | else | |
3983 | strip = false; | |
3984 | ||
3985 | if (strip) | |
3986 | return true; | |
3987 | ||
3988 | if (h->esym.ifd == -2) | |
3989 | { | |
3990 | h->esym.jmptbl = 0; | |
3991 | h->esym.cobol_main = 0; | |
3992 | h->esym.weakext = 0; | |
3993 | h->esym.reserved = 0; | |
3994 | h->esym.ifd = ifdNil; | |
3995 | h->esym.asym.value = 0; | |
3996 | h->esym.asym.st = stGlobal; | |
3997 | ||
3998 | if (SGI_COMPAT (einfo->abfd) | |
3999 | && (h->root.root.type == bfd_link_hash_undefined | |
4000 | || h->root.root.type == bfd_link_hash_undefweak)) | |
4001 | { | |
4002 | const char *name; | |
4003 | ||
4004 | /* Use undefined class. Also, set class and type for some | |
4005 | special symbols. */ | |
4006 | name = h->root.root.root.string; | |
4007 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
4008 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
4009 | { | |
4010 | h->esym.asym.sc = scData; | |
4011 | h->esym.asym.st = stLabel; | |
4012 | h->esym.asym.value = 0; | |
4013 | } | |
4014 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
4015 | { | |
4016 | h->esym.asym.sc = scAbs; | |
4017 | h->esym.asym.st = stLabel; | |
4018 | h->esym.asym.value = | |
4019 | mips_elf_hash_table (einfo->info)->procedure_count; | |
4020 | } | |
4021 | else if (strcmp (name, "_gp_disp") == 0) | |
4022 | { | |
4023 | h->esym.asym.sc = scAbs; | |
4024 | h->esym.asym.st = stLabel; | |
4025 | h->esym.asym.value = elf_gp (einfo->abfd); | |
4026 | } | |
4027 | else | |
4028 | h->esym.asym.sc = scUndefined; | |
4029 | } | |
4030 | else if (h->root.root.type != bfd_link_hash_defined | |
4031 | && h->root.root.type != bfd_link_hash_defweak) | |
4032 | h->esym.asym.sc = scAbs; | |
4033 | else | |
4034 | { | |
4035 | const char *name; | |
4036 | ||
4037 | sec = h->root.root.u.def.section; | |
4038 | output_section = sec->output_section; | |
4039 | ||
4040 | /* When making a shared library and symbol h is the one from | |
4041 | the another shared library, OUTPUT_SECTION may be null. */ | |
4042 | if (output_section == NULL) | |
4043 | h->esym.asym.sc = scUndefined; | |
4044 | else | |
4045 | { | |
4046 | name = bfd_section_name (output_section->owner, output_section); | |
4047 | ||
4048 | if (strcmp (name, ".text") == 0) | |
4049 | h->esym.asym.sc = scText; | |
4050 | else if (strcmp (name, ".data") == 0) | |
4051 | h->esym.asym.sc = scData; | |
4052 | else if (strcmp (name, ".sdata") == 0) | |
4053 | h->esym.asym.sc = scSData; | |
4054 | else if (strcmp (name, ".rodata") == 0 | |
4055 | || strcmp (name, ".rdata") == 0) | |
4056 | h->esym.asym.sc = scRData; | |
4057 | else if (strcmp (name, ".bss") == 0) | |
4058 | h->esym.asym.sc = scBss; | |
4059 | else if (strcmp (name, ".sbss") == 0) | |
4060 | h->esym.asym.sc = scSBss; | |
4061 | else if (strcmp (name, ".init") == 0) | |
4062 | h->esym.asym.sc = scInit; | |
4063 | else if (strcmp (name, ".fini") == 0) | |
4064 | h->esym.asym.sc = scFini; | |
4065 | else | |
4066 | h->esym.asym.sc = scAbs; | |
4067 | } | |
4068 | } | |
4069 | ||
4070 | h->esym.asym.reserved = 0; | |
4071 | h->esym.asym.index = indexNil; | |
4072 | } | |
4073 | ||
4074 | if (h->root.root.type == bfd_link_hash_common) | |
4075 | h->esym.asym.value = h->root.root.u.c.size; | |
4076 | else if (h->root.root.type == bfd_link_hash_defined | |
4077 | || h->root.root.type == bfd_link_hash_defweak) | |
4078 | { | |
4079 | if (h->esym.asym.sc == scCommon) | |
4080 | h->esym.asym.sc = scBss; | |
4081 | else if (h->esym.asym.sc == scSCommon) | |
4082 | h->esym.asym.sc = scSBss; | |
4083 | ||
4084 | sec = h->root.root.u.def.section; | |
4085 | output_section = sec->output_section; | |
4086 | if (output_section != NULL) | |
4087 | h->esym.asym.value = (h->root.root.u.def.value | |
4088 | + sec->output_offset | |
4089 | + output_section->vma); | |
4090 | else | |
4091 | h->esym.asym.value = 0; | |
4092 | } | |
4093 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
4094 | { | |
4095 | /* Set type and value for a symbol with a function stub. */ | |
4096 | h->esym.asym.st = stProc; | |
4097 | sec = h->root.root.u.def.section; | |
4098 | if (sec == NULL) | |
4099 | h->esym.asym.value = 0; | |
4100 | else | |
4101 | { | |
4102 | output_section = sec->output_section; | |
4103 | if (output_section != NULL) | |
4104 | h->esym.asym.value = (h->root.plt.offset | |
4105 | + sec->output_offset | |
4106 | + output_section->vma); | |
4107 | else | |
4108 | h->esym.asym.value = 0; | |
4109 | } | |
4110 | #if 0 /* FIXME? */ | |
4111 | h->esym.ifd = 0; | |
4112 | #endif | |
4113 | } | |
4114 | ||
4115 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
4116 | h->root.root.root.string, | |
4117 | &h->esym)) | |
4118 | { | |
4119 | einfo->failed = true; | |
4120 | return false; | |
4121 | } | |
4122 | ||
4123 | return true; | |
4124 | } | |
4125 | ||
4126 | /* Create a runtime procedure table from the .mdebug section. */ | |
4127 | ||
4128 | static boolean | |
4129 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
4130 | PTR handle; | |
4131 | bfd *abfd; | |
4132 | struct bfd_link_info *info; | |
4133 | asection *s; | |
4134 | struct ecoff_debug_info *debug; | |
4135 | { | |
4136 | const struct ecoff_debug_swap *swap; | |
4137 | HDRR *hdr = &debug->symbolic_header; | |
4138 | RPDR *rpdr, *rp; | |
4139 | struct rpdr_ext *erp; | |
4140 | PTR rtproc; | |
4141 | struct pdr_ext *epdr; | |
4142 | struct sym_ext *esym; | |
4143 | char *ss, **sv; | |
4144 | char *str; | |
4145 | unsigned long size, count; | |
4146 | unsigned long sindex; | |
4147 | unsigned long i; | |
4148 | PDR pdr; | |
4149 | SYMR sym; | |
4150 | const char *no_name_func = _("static procedure (no name)"); | |
4151 | ||
4152 | epdr = NULL; | |
4153 | rpdr = NULL; | |
4154 | esym = NULL; | |
4155 | ss = NULL; | |
4156 | sv = NULL; | |
4157 | ||
4158 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4159 | ||
4160 | sindex = strlen (no_name_func) + 1; | |
4161 | count = hdr->ipdMax; | |
4162 | if (count > 0) | |
4163 | { | |
4164 | size = swap->external_pdr_size; | |
4165 | ||
4166 | epdr = (struct pdr_ext *) bfd_malloc (size * count); | |
4167 | if (epdr == NULL) | |
4168 | goto error_return; | |
4169 | ||
4170 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr)) | |
4171 | goto error_return; | |
4172 | ||
4173 | size = sizeof (RPDR); | |
4174 | rp = rpdr = (RPDR *) bfd_malloc (size * count); | |
4175 | if (rpdr == NULL) | |
4176 | goto error_return; | |
4177 | ||
4178 | sv = (char **) bfd_malloc (sizeof (char *) * count); | |
4179 | if (sv == NULL) | |
4180 | goto error_return; | |
4181 | ||
4182 | count = hdr->isymMax; | |
4183 | size = swap->external_sym_size; | |
4184 | esym = (struct sym_ext *) bfd_malloc (size * count); | |
4185 | if (esym == NULL) | |
4186 | goto error_return; | |
4187 | ||
4188 | if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym)) | |
4189 | goto error_return; | |
4190 | ||
4191 | count = hdr->issMax; | |
4192 | ss = (char *) bfd_malloc (count); | |
4193 | if (ss == NULL) | |
4194 | goto error_return; | |
4195 | if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss)) | |
4196 | goto error_return; | |
4197 | ||
4198 | count = hdr->ipdMax; | |
4199 | for (i = 0; i < count; i++, rp++) | |
4200 | { | |
4201 | (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr); | |
4202 | (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym); | |
4203 | rp->adr = sym.value; | |
4204 | rp->regmask = pdr.regmask; | |
4205 | rp->regoffset = pdr.regoffset; | |
4206 | rp->fregmask = pdr.fregmask; | |
4207 | rp->fregoffset = pdr.fregoffset; | |
4208 | rp->frameoffset = pdr.frameoffset; | |
4209 | rp->framereg = pdr.framereg; | |
4210 | rp->pcreg = pdr.pcreg; | |
4211 | rp->irpss = sindex; | |
4212 | sv[i] = ss + sym.iss; | |
4213 | sindex += strlen (sv[i]) + 1; | |
4214 | } | |
4215 | } | |
4216 | ||
4217 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
4218 | size = BFD_ALIGN (size, 16); | |
4219 | rtproc = (PTR) bfd_alloc (abfd, size); | |
4220 | if (rtproc == NULL) | |
4221 | { | |
4222 | mips_elf_hash_table (info)->procedure_count = 0; | |
4223 | goto error_return; | |
4224 | } | |
4225 | ||
4226 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
4227 | ||
4228 | erp = (struct rpdr_ext *) rtproc; | |
4229 | memset (erp, 0, sizeof (struct rpdr_ext)); | |
4230 | erp++; | |
4231 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
4232 | strcpy (str, no_name_func); | |
4233 | str += strlen (no_name_func) + 1; | |
4234 | for (i = 0; i < count; i++) | |
4235 | { | |
4236 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
4237 | strcpy (str, sv[i]); | |
4238 | str += strlen (sv[i]) + 1; | |
4239 | } | |
4240 | ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr); | |
4241 | ||
4242 | /* Set the size and contents of .rtproc section. */ | |
4243 | s->_raw_size = size; | |
4244 | s->contents = (bfd_byte *) rtproc; | |
4245 | ||
4246 | /* Skip this section later on (I don't think this currently | |
4247 | matters, but someday it might). */ | |
4248 | s->link_order_head = (struct bfd_link_order *) NULL; | |
4249 | ||
4250 | if (epdr != NULL) | |
4251 | free (epdr); | |
4252 | if (rpdr != NULL) | |
4253 | free (rpdr); | |
4254 | if (esym != NULL) | |
4255 | free (esym); | |
4256 | if (ss != NULL) | |
4257 | free (ss); | |
4258 | if (sv != NULL) | |
4259 | free (sv); | |
4260 | ||
4261 | return true; | |
4262 | ||
4263 | error_return: | |
4264 | if (epdr != NULL) | |
4265 | free (epdr); | |
4266 | if (rpdr != NULL) | |
4267 | free (rpdr); | |
4268 | if (esym != NULL) | |
4269 | free (esym); | |
4270 | if (ss != NULL) | |
4271 | free (ss); | |
4272 | if (sv != NULL) | |
4273 | free (sv); | |
4274 | return false; | |
4275 | } | |
4276 | ||
4277 | /* A comparison routine used to sort .gptab entries. */ | |
4278 | ||
4279 | static int | |
4280 | gptab_compare (p1, p2) | |
4281 | const PTR p1; | |
4282 | const PTR p2; | |
4283 | { | |
4284 | const Elf32_gptab *a1 = (const Elf32_gptab *) p1; | |
4285 | const Elf32_gptab *a2 = (const Elf32_gptab *) p2; | |
4286 | ||
4287 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
4288 | } | |
4289 | ||
4290 | /* We need to use a special link routine to handle the .reginfo and | |
4291 | the .mdebug sections. We need to merge all instances of these | |
4292 | sections together, not write them all out sequentially. */ | |
4293 | ||
103186c6 MM |
4294 | boolean |
4295 | _bfd_mips_elf_final_link (abfd, info) | |
252b5132 RH |
4296 | bfd *abfd; |
4297 | struct bfd_link_info *info; | |
4298 | { | |
4299 | asection **secpp; | |
4300 | asection *o; | |
4301 | struct bfd_link_order *p; | |
4302 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
4303 | asection *rtproc_sec; | |
4304 | Elf32_RegInfo reginfo; | |
4305 | struct ecoff_debug_info debug; | |
4306 | const struct ecoff_debug_swap *swap | |
4307 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4308 | HDRR *symhdr = &debug.symbolic_header; | |
4309 | PTR mdebug_handle = NULL; | |
4310 | ||
303f629d MM |
4311 | /* If all the things we linked together were PIC, but we're |
4312 | producing an executable (rather than a shared object), then the | |
4313 | resulting file is CPIC (i.e., it calls PIC code.) */ | |
0dda5f7a ILT |
4314 | if (!info->shared |
4315 | && !info->relocateable | |
4316 | && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
252b5132 | 4317 | { |
303f629d MM |
4318 | elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC; |
4319 | elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC; | |
252b5132 RH |
4320 | } |
4321 | ||
303f629d MM |
4322 | /* On IRIX5, we omit the .options section. On IRIX6, however, we |
4323 | include it, even though we don't process it quite right. (Some | |
4324 | entries are supposed to be merged.) Empirically, we seem to be | |
4325 | better off including it then not. */ | |
4326 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
4327 | for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) | |
4328 | { | |
4329 | if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0) | |
4330 | { | |
4331 | for (p = (*secpp)->link_order_head; p != NULL; p = p->next) | |
4332 | if (p->type == bfd_indirect_link_order) | |
4333 | p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; | |
4334 | (*secpp)->link_order_head = NULL; | |
4335 | *secpp = (*secpp)->next; | |
4336 | --abfd->section_count; | |
4337 | ||
4338 | break; | |
4339 | } | |
4340 | } | |
4341 | ||
252b5132 RH |
4342 | /* Get a value for the GP register. */ |
4343 | if (elf_gp (abfd) == 0) | |
4344 | { | |
4345 | struct bfd_link_hash_entry *h; | |
4346 | ||
4347 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
4348 | if (h != (struct bfd_link_hash_entry *) NULL | |
4349 | && h->type == bfd_link_hash_defined) | |
4350 | elf_gp (abfd) = (h->u.def.value | |
4351 | + h->u.def.section->output_section->vma | |
4352 | + h->u.def.section->output_offset); | |
4353 | else if (info->relocateable) | |
4354 | { | |
4355 | bfd_vma lo; | |
4356 | ||
303f629d | 4357 | /* Find the GP-relative section with the lowest offset. */ |
252b5132 RH |
4358 | lo = (bfd_vma) -1; |
4359 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
303f629d MM |
4360 | if (o->vma < lo |
4361 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
4362 | lo = o->vma; | |
4363 | ||
4364 | /* And calculate GP relative to that. */ | |
252b5132 RH |
4365 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd); |
4366 | } | |
4367 | else | |
4368 | { | |
4369 | /* If the relocate_section function needs to do a reloc | |
4370 | involving the GP value, it should make a reloc_dangerous | |
4371 | callback to warn that GP is not defined. */ | |
4372 | } | |
4373 | } | |
4374 | ||
4375 | /* Go through the sections and collect the .reginfo and .mdebug | |
4376 | information. */ | |
4377 | reginfo_sec = NULL; | |
4378 | mdebug_sec = NULL; | |
4379 | gptab_data_sec = NULL; | |
4380 | gptab_bss_sec = NULL; | |
4381 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
4382 | { | |
4383 | if (strcmp (o->name, ".reginfo") == 0) | |
4384 | { | |
4385 | memset (®info, 0, sizeof reginfo); | |
4386 | ||
4387 | /* We have found the .reginfo section in the output file. | |
4388 | Look through all the link_orders comprising it and merge | |
4389 | the information together. */ | |
4390 | for (p = o->link_order_head; | |
4391 | p != (struct bfd_link_order *) NULL; | |
4392 | p = p->next) | |
4393 | { | |
4394 | asection *input_section; | |
4395 | bfd *input_bfd; | |
4396 | Elf32_External_RegInfo ext; | |
4397 | Elf32_RegInfo sub; | |
4398 | ||
4399 | if (p->type != bfd_indirect_link_order) | |
4400 | { | |
4401 | if (p->type == bfd_fill_link_order) | |
4402 | continue; | |
4403 | abort (); | |
4404 | } | |
4405 | ||
4406 | input_section = p->u.indirect.section; | |
4407 | input_bfd = input_section->owner; | |
4408 | ||
4409 | /* The linker emulation code has probably clobbered the | |
4410 | size to be zero bytes. */ | |
4411 | if (input_section->_raw_size == 0) | |
4412 | input_section->_raw_size = sizeof (Elf32_External_RegInfo); | |
4413 | ||
4414 | if (! bfd_get_section_contents (input_bfd, input_section, | |
4415 | (PTR) &ext, | |
4416 | (file_ptr) 0, | |
4417 | sizeof ext)) | |
4418 | return false; | |
4419 | ||
4420 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
4421 | ||
4422 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
4423 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
4424 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
4425 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
4426 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
4427 | ||
4428 | /* ri_gp_value is set by the function | |
4429 | mips_elf32_section_processing when the section is | |
4430 | finally written out. */ | |
4431 | ||
4432 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4433 | elf_link_input_bfd ignores this section. */ | |
4434 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4435 | } | |
4436 | ||
4437 | /* Size has been set in mips_elf_always_size_sections */ | |
4438 | BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo)); | |
4439 | ||
4440 | /* Skip this section later on (I don't think this currently | |
4441 | matters, but someday it might). */ | |
4442 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4443 | ||
4444 | reginfo_sec = o; | |
4445 | } | |
4446 | ||
4447 | if (strcmp (o->name, ".mdebug") == 0) | |
4448 | { | |
4449 | struct extsym_info einfo; | |
4450 | ||
4451 | /* We have found the .mdebug section in the output file. | |
4452 | Look through all the link_orders comprising it and merge | |
4453 | the information together. */ | |
4454 | symhdr->magic = swap->sym_magic; | |
4455 | /* FIXME: What should the version stamp be? */ | |
4456 | symhdr->vstamp = 0; | |
4457 | symhdr->ilineMax = 0; | |
4458 | symhdr->cbLine = 0; | |
4459 | symhdr->idnMax = 0; | |
4460 | symhdr->ipdMax = 0; | |
4461 | symhdr->isymMax = 0; | |
4462 | symhdr->ioptMax = 0; | |
4463 | symhdr->iauxMax = 0; | |
4464 | symhdr->issMax = 0; | |
4465 | symhdr->issExtMax = 0; | |
4466 | symhdr->ifdMax = 0; | |
4467 | symhdr->crfd = 0; | |
4468 | symhdr->iextMax = 0; | |
4469 | ||
4470 | /* We accumulate the debugging information itself in the | |
4471 | debug_info structure. */ | |
4472 | debug.line = NULL; | |
4473 | debug.external_dnr = NULL; | |
4474 | debug.external_pdr = NULL; | |
4475 | debug.external_sym = NULL; | |
4476 | debug.external_opt = NULL; | |
4477 | debug.external_aux = NULL; | |
4478 | debug.ss = NULL; | |
4479 | debug.ssext = debug.ssext_end = NULL; | |
4480 | debug.external_fdr = NULL; | |
4481 | debug.external_rfd = NULL; | |
4482 | debug.external_ext = debug.external_ext_end = NULL; | |
4483 | ||
4484 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4485 | if (mdebug_handle == (PTR) NULL) | |
4486 | return false; | |
4487 | ||
4488 | if (SGI_COMPAT (abfd)) | |
4489 | { | |
4490 | asection *s; | |
4491 | EXTR esym; | |
4492 | bfd_vma last; | |
4493 | unsigned int i; | |
4494 | static const char * const name[] = | |
4495 | { ".text", ".init", ".fini", ".data", | |
4496 | ".rodata", ".sdata", ".sbss", ".bss" }; | |
4497 | static const int sc[] = { scText, scInit, scFini, scData, | |
4498 | scRData, scSData, scSBss, scBss }; | |
4499 | ||
4500 | esym.jmptbl = 0; | |
4501 | esym.cobol_main = 0; | |
4502 | esym.weakext = 0; | |
4503 | esym.reserved = 0; | |
4504 | esym.ifd = ifdNil; | |
4505 | esym.asym.iss = issNil; | |
4506 | esym.asym.st = stLocal; | |
4507 | esym.asym.reserved = 0; | |
4508 | esym.asym.index = indexNil; | |
4509 | last = 0; | |
4510 | for (i = 0; i < 8; i++) | |
4511 | { | |
4512 | esym.asym.sc = sc[i]; | |
4513 | s = bfd_get_section_by_name (abfd, name[i]); | |
4514 | if (s != NULL) | |
4515 | { | |
4516 | esym.asym.value = s->vma; | |
4517 | last = s->vma + s->_raw_size; | |
4518 | } | |
4519 | else | |
4520 | esym.asym.value = last; | |
4521 | ||
4522 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4523 | name[i], &esym)) | |
4524 | return false; | |
4525 | } | |
4526 | } | |
4527 | ||
4528 | for (p = o->link_order_head; | |
4529 | p != (struct bfd_link_order *) NULL; | |
4530 | p = p->next) | |
4531 | { | |
4532 | asection *input_section; | |
4533 | bfd *input_bfd; | |
4534 | const struct ecoff_debug_swap *input_swap; | |
4535 | struct ecoff_debug_info input_debug; | |
4536 | char *eraw_src; | |
4537 | char *eraw_end; | |
4538 | ||
4539 | if (p->type != bfd_indirect_link_order) | |
4540 | { | |
4541 | if (p->type == bfd_fill_link_order) | |
4542 | continue; | |
4543 | abort (); | |
4544 | } | |
4545 | ||
4546 | input_section = p->u.indirect.section; | |
4547 | input_bfd = input_section->owner; | |
4548 | ||
4549 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
4550 | || (get_elf_backend_data (input_bfd) | |
4551 | ->elf_backend_ecoff_debug_swap) == NULL) | |
4552 | { | |
4553 | /* I don't know what a non MIPS ELF bfd would be | |
4554 | doing with a .mdebug section, but I don't really | |
4555 | want to deal with it. */ | |
4556 | continue; | |
4557 | } | |
4558 | ||
4559 | input_swap = (get_elf_backend_data (input_bfd) | |
4560 | ->elf_backend_ecoff_debug_swap); | |
4561 | ||
4562 | BFD_ASSERT (p->size == input_section->_raw_size); | |
4563 | ||
4564 | /* The ECOFF linking code expects that we have already | |
4565 | read in the debugging information and set up an | |
4566 | ecoff_debug_info structure, so we do that now. */ | |
4567 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
4568 | &input_debug)) | |
4569 | return false; | |
4570 | ||
4571 | if (! (bfd_ecoff_debug_accumulate | |
4572 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
4573 | &input_debug, input_swap, info))) | |
4574 | return false; | |
4575 | ||
4576 | /* Loop through the external symbols. For each one with | |
4577 | interesting information, try to find the symbol in | |
4578 | the linker global hash table and save the information | |
4579 | for the output external symbols. */ | |
4580 | eraw_src = input_debug.external_ext; | |
4581 | eraw_end = (eraw_src | |
4582 | + (input_debug.symbolic_header.iextMax | |
4583 | * input_swap->external_ext_size)); | |
4584 | for (; | |
4585 | eraw_src < eraw_end; | |
4586 | eraw_src += input_swap->external_ext_size) | |
4587 | { | |
4588 | EXTR ext; | |
4589 | const char *name; | |
4590 | struct mips_elf_link_hash_entry *h; | |
4591 | ||
4592 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
4593 | if (ext.asym.sc == scNil | |
4594 | || ext.asym.sc == scUndefined | |
4595 | || ext.asym.sc == scSUndefined) | |
4596 | continue; | |
4597 | ||
4598 | name = input_debug.ssext + ext.asym.iss; | |
4599 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
4600 | name, false, false, true); | |
4601 | if (h == NULL || h->esym.ifd != -2) | |
4602 | continue; | |
4603 | ||
4604 | if (ext.ifd != -1) | |
4605 | { | |
4606 | BFD_ASSERT (ext.ifd | |
4607 | < input_debug.symbolic_header.ifdMax); | |
4608 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
4609 | } | |
4610 | ||
4611 | h->esym = ext; | |
4612 | } | |
4613 | ||
4614 | /* Free up the information we just read. */ | |
4615 | free (input_debug.line); | |
4616 | free (input_debug.external_dnr); | |
4617 | free (input_debug.external_pdr); | |
4618 | free (input_debug.external_sym); | |
4619 | free (input_debug.external_opt); | |
4620 | free (input_debug.external_aux); | |
4621 | free (input_debug.ss); | |
4622 | free (input_debug.ssext); | |
4623 | free (input_debug.external_fdr); | |
4624 | free (input_debug.external_rfd); | |
4625 | free (input_debug.external_ext); | |
4626 | ||
4627 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4628 | elf_link_input_bfd ignores this section. */ | |
4629 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4630 | } | |
4631 | ||
4632 | if (SGI_COMPAT (abfd) && info->shared) | |
4633 | { | |
4634 | /* Create .rtproc section. */ | |
4635 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
4636 | if (rtproc_sec == NULL) | |
4637 | { | |
4638 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4639 | | SEC_LINKER_CREATED | SEC_READONLY); | |
4640 | ||
4641 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); | |
4642 | if (rtproc_sec == NULL | |
4643 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) | |
4644 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) | |
4645 | return false; | |
4646 | } | |
4647 | ||
4648 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
4649 | info, rtproc_sec, &debug)) | |
4650 | return false; | |
4651 | } | |
4652 | ||
4653 | /* Build the external symbol information. */ | |
4654 | einfo.abfd = abfd; | |
4655 | einfo.info = info; | |
4656 | einfo.debug = &debug; | |
4657 | einfo.swap = swap; | |
4658 | einfo.failed = false; | |
4659 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
4660 | mips_elf_output_extsym, | |
4661 | (PTR) &einfo); | |
4662 | if (einfo.failed) | |
4663 | return false; | |
4664 | ||
4665 | /* Set the size of the .mdebug section. */ | |
4666 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
4667 | ||
4668 | /* Skip this section later on (I don't think this currently | |
4669 | matters, but someday it might). */ | |
4670 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4671 | ||
4672 | mdebug_sec = o; | |
4673 | } | |
4674 | ||
4675 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
4676 | { | |
4677 | const char *subname; | |
4678 | unsigned int c; | |
4679 | Elf32_gptab *tab; | |
4680 | Elf32_External_gptab *ext_tab; | |
4681 | unsigned int i; | |
4682 | ||
4683 | /* The .gptab.sdata and .gptab.sbss sections hold | |
4684 | information describing how the small data area would | |
4685 | change depending upon the -G switch. These sections | |
4686 | not used in executables files. */ | |
4687 | if (! info->relocateable) | |
4688 | { | |
4689 | asection **secpp; | |
4690 | ||
4691 | for (p = o->link_order_head; | |
4692 | p != (struct bfd_link_order *) NULL; | |
4693 | p = p->next) | |
4694 | { | |
4695 | asection *input_section; | |
4696 | ||
4697 | if (p->type != bfd_indirect_link_order) | |
4698 | { | |
4699 | if (p->type == bfd_fill_link_order) | |
4700 | continue; | |
4701 | abort (); | |
4702 | } | |
4703 | ||
4704 | input_section = p->u.indirect.section; | |
4705 | ||
4706 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4707 | elf_link_input_bfd ignores this section. */ | |
4708 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4709 | } | |
4710 | ||
4711 | /* Skip this section later on (I don't think this | |
4712 | currently matters, but someday it might). */ | |
4713 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4714 | ||
4715 | /* Really remove the section. */ | |
4716 | for (secpp = &abfd->sections; | |
4717 | *secpp != o; | |
4718 | secpp = &(*secpp)->next) | |
4719 | ; | |
4720 | *secpp = (*secpp)->next; | |
4721 | --abfd->section_count; | |
4722 | ||
4723 | continue; | |
4724 | } | |
4725 | ||
4726 | /* There is one gptab for initialized data, and one for | |
4727 | uninitialized data. */ | |
4728 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
4729 | gptab_data_sec = o; | |
4730 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
4731 | gptab_bss_sec = o; | |
4732 | else | |
4733 | { | |
4734 | (*_bfd_error_handler) | |
4735 | (_("%s: illegal section name `%s'"), | |
4736 | bfd_get_filename (abfd), o->name); | |
4737 | bfd_set_error (bfd_error_nonrepresentable_section); | |
4738 | return false; | |
4739 | } | |
4740 | ||
4741 | /* The linker script always combines .gptab.data and | |
4742 | .gptab.sdata into .gptab.sdata, and likewise for | |
4743 | .gptab.bss and .gptab.sbss. It is possible that there is | |
4744 | no .sdata or .sbss section in the output file, in which | |
4745 | case we must change the name of the output section. */ | |
4746 | subname = o->name + sizeof ".gptab" - 1; | |
4747 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
4748 | { | |
4749 | if (o == gptab_data_sec) | |
4750 | o->name = ".gptab.data"; | |
4751 | else | |
4752 | o->name = ".gptab.bss"; | |
4753 | subname = o->name + sizeof ".gptab" - 1; | |
4754 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
4755 | } | |
4756 | ||
4757 | /* Set up the first entry. */ | |
4758 | c = 1; | |
4759 | tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); | |
4760 | if (tab == NULL) | |
4761 | return false; | |
4762 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); | |
4763 | tab[0].gt_header.gt_unused = 0; | |
4764 | ||
4765 | /* Combine the input sections. */ | |
4766 | for (p = o->link_order_head; | |
4767 | p != (struct bfd_link_order *) NULL; | |
4768 | p = p->next) | |
4769 | { | |
4770 | asection *input_section; | |
4771 | bfd *input_bfd; | |
4772 | bfd_size_type size; | |
4773 | unsigned long last; | |
4774 | bfd_size_type gpentry; | |
4775 | ||
4776 | if (p->type != bfd_indirect_link_order) | |
4777 | { | |
4778 | if (p->type == bfd_fill_link_order) | |
4779 | continue; | |
4780 | abort (); | |
4781 | } | |
4782 | ||
4783 | input_section = p->u.indirect.section; | |
4784 | input_bfd = input_section->owner; | |
4785 | ||
4786 | /* Combine the gptab entries for this input section one | |
4787 | by one. We know that the input gptab entries are | |
4788 | sorted by ascending -G value. */ | |
4789 | size = bfd_section_size (input_bfd, input_section); | |
4790 | last = 0; | |
4791 | for (gpentry = sizeof (Elf32_External_gptab); | |
4792 | gpentry < size; | |
4793 | gpentry += sizeof (Elf32_External_gptab)) | |
4794 | { | |
4795 | Elf32_External_gptab ext_gptab; | |
4796 | Elf32_gptab int_gptab; | |
4797 | unsigned long val; | |
4798 | unsigned long add; | |
4799 | boolean exact; | |
4800 | unsigned int look; | |
4801 | ||
4802 | if (! (bfd_get_section_contents | |
4803 | (input_bfd, input_section, (PTR) &ext_gptab, | |
4804 | gpentry, sizeof (Elf32_External_gptab)))) | |
4805 | { | |
4806 | free (tab); | |
4807 | return false; | |
4808 | } | |
4809 | ||
4810 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
4811 | &int_gptab); | |
4812 | val = int_gptab.gt_entry.gt_g_value; | |
4813 | add = int_gptab.gt_entry.gt_bytes - last; | |
4814 | ||
4815 | exact = false; | |
4816 | for (look = 1; look < c; look++) | |
4817 | { | |
4818 | if (tab[look].gt_entry.gt_g_value >= val) | |
4819 | tab[look].gt_entry.gt_bytes += add; | |
4820 | ||
4821 | if (tab[look].gt_entry.gt_g_value == val) | |
4822 | exact = true; | |
4823 | } | |
4824 | ||
4825 | if (! exact) | |
4826 | { | |
4827 | Elf32_gptab *new_tab; | |
4828 | unsigned int max; | |
4829 | ||
4830 | /* We need a new table entry. */ | |
4831 | new_tab = ((Elf32_gptab *) | |
4832 | bfd_realloc ((PTR) tab, | |
4833 | (c + 1) * sizeof (Elf32_gptab))); | |
4834 | if (new_tab == NULL) | |
4835 | { | |
4836 | free (tab); | |
4837 | return false; | |
4838 | } | |
4839 | tab = new_tab; | |
4840 | tab[c].gt_entry.gt_g_value = val; | |
4841 | tab[c].gt_entry.gt_bytes = add; | |
4842 | ||
4843 | /* Merge in the size for the next smallest -G | |
4844 | value, since that will be implied by this new | |
4845 | value. */ | |
4846 | max = 0; | |
4847 | for (look = 1; look < c; look++) | |
4848 | { | |
4849 | if (tab[look].gt_entry.gt_g_value < val | |
4850 | && (max == 0 | |
4851 | || (tab[look].gt_entry.gt_g_value | |
4852 | > tab[max].gt_entry.gt_g_value))) | |
4853 | max = look; | |
4854 | } | |
4855 | if (max != 0) | |
4856 | tab[c].gt_entry.gt_bytes += | |
4857 | tab[max].gt_entry.gt_bytes; | |
4858 | ||
4859 | ++c; | |
4860 | } | |
4861 | ||
4862 | last = int_gptab.gt_entry.gt_bytes; | |
4863 | } | |
4864 | ||
4865 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4866 | elf_link_input_bfd ignores this section. */ | |
4867 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4868 | } | |
4869 | ||
4870 | /* The table must be sorted by -G value. */ | |
4871 | if (c > 2) | |
4872 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
4873 | ||
4874 | /* Swap out the table. */ | |
4875 | ext_tab = ((Elf32_External_gptab *) | |
4876 | bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); | |
4877 | if (ext_tab == NULL) | |
4878 | { | |
4879 | free (tab); | |
4880 | return false; | |
4881 | } | |
4882 | ||
4883 | for (i = 0; i < c; i++) | |
4884 | bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i); | |
4885 | free (tab); | |
4886 | ||
4887 | o->_raw_size = c * sizeof (Elf32_External_gptab); | |
4888 | o->contents = (bfd_byte *) ext_tab; | |
4889 | ||
4890 | /* Skip this section later on (I don't think this currently | |
4891 | matters, but someday it might). */ | |
4892 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4893 | } | |
4894 | } | |
4895 | ||
4896 | /* Invoke the regular ELF backend linker to do all the work. */ | |
9ebbd33e MM |
4897 | if (ABI_64_P (abfd)) |
4898 | { | |
4899 | #ifdef BFD64 | |
4900 | if (!bfd_elf64_bfd_final_link (abfd, info)) | |
4901 | return false; | |
4902 | #else | |
4903 | abort (); | |
103186c6 | 4904 | return false; |
9ebbd33e MM |
4905 | #endif /* BFD64 */ |
4906 | } | |
4907 | else if (!bfd_elf32_bfd_final_link (abfd, info)) | |
4908 | return false; | |
252b5132 RH |
4909 | |
4910 | /* Now write out the computed sections. */ | |
4911 | ||
4912 | if (reginfo_sec != (asection *) NULL) | |
4913 | { | |
4914 | Elf32_External_RegInfo ext; | |
4915 | ||
4916 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
4917 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, | |
4918 | (file_ptr) 0, sizeof ext)) | |
4919 | return false; | |
4920 | } | |
4921 | ||
4922 | if (mdebug_sec != (asection *) NULL) | |
4923 | { | |
4924 | BFD_ASSERT (abfd->output_has_begun); | |
4925 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
4926 | swap, info, | |
4927 | mdebug_sec->filepos)) | |
4928 | return false; | |
4929 | ||
4930 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
4931 | } | |
4932 | ||
4933 | if (gptab_data_sec != (asection *) NULL) | |
4934 | { | |
4935 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
4936 | gptab_data_sec->contents, | |
4937 | (file_ptr) 0, | |
4938 | gptab_data_sec->_raw_size)) | |
4939 | return false; | |
4940 | } | |
4941 | ||
4942 | if (gptab_bss_sec != (asection *) NULL) | |
4943 | { | |
4944 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
4945 | gptab_bss_sec->contents, | |
4946 | (file_ptr) 0, | |
4947 | gptab_bss_sec->_raw_size)) | |
4948 | return false; | |
4949 | } | |
4950 | ||
4951 | if (SGI_COMPAT (abfd)) | |
4952 | { | |
4953 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
4954 | if (rtproc_sec != NULL) | |
4955 | { | |
4956 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
4957 | rtproc_sec->contents, | |
4958 | (file_ptr) 0, | |
4959 | rtproc_sec->_raw_size)) | |
4960 | return false; | |
4961 | } | |
4962 | } | |
4963 | ||
4964 | return true; | |
4965 | } | |
4966 | ||
4967 | /* Handle a MIPS ELF HI16 reloc. */ | |
4968 | ||
4969 | static void | |
4970 | mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend) | |
4971 | bfd *input_bfd; | |
4972 | Elf_Internal_Rela *relhi; | |
4973 | Elf_Internal_Rela *rello; | |
4974 | bfd_byte *contents; | |
4975 | bfd_vma addend; | |
4976 | { | |
4977 | bfd_vma insn; | |
4978 | bfd_vma addlo; | |
4979 | ||
4980 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
4981 | ||
4982 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
4983 | addlo &= 0xffff; | |
4984 | ||
4985 | addend += ((insn & 0xffff) << 16) + addlo; | |
4986 | ||
4987 | if ((addlo & 0x8000) != 0) | |
4988 | addend -= 0x10000; | |
4989 | if ((addend & 0x8000) != 0) | |
4990 | addend += 0x10000; | |
4991 | ||
4992 | bfd_put_32 (input_bfd, | |
4993 | (insn & 0xffff0000) | ((addend >> 16) & 0xffff), | |
4994 | contents + relhi->r_offset); | |
4995 | } | |
4996 | ||
4997 | /* Handle a MIPS ELF local GOT16 reloc. */ | |
4998 | ||
4999 | static boolean | |
5000 | mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello, | |
5001 | contents, addend) | |
5002 | bfd *output_bfd; | |
5003 | bfd *input_bfd; | |
5004 | asection *sgot; | |
5005 | Elf_Internal_Rela *relhi; | |
5006 | Elf_Internal_Rela *rello; | |
5007 | bfd_byte *contents; | |
5008 | bfd_vma addend; | |
5009 | { | |
5010 | unsigned int assigned_gotno; | |
5011 | unsigned int i; | |
5012 | bfd_vma insn; | |
5013 | bfd_vma addlo; | |
5014 | bfd_vma address; | |
5015 | bfd_vma hipage; | |
5016 | bfd_byte *got_contents; | |
5017 | struct mips_got_info *g; | |
5018 | ||
5019 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
5020 | ||
5021 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
5022 | addlo &= 0xffff; | |
5023 | ||
5024 | addend += ((insn & 0xffff) << 16) + addlo; | |
5025 | ||
5026 | if ((addlo & 0x8000) != 0) | |
5027 | addend -= 0x10000; | |
5028 | if ((addend & 0x8000) != 0) | |
5029 | addend += 0x10000; | |
5030 | ||
5031 | /* Get a got entry representing requested hipage. */ | |
5032 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5033 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
5034 | BFD_ASSERT (g != NULL); | |
5035 | ||
5036 | assigned_gotno = g->assigned_gotno; | |
5037 | got_contents = sgot->contents; | |
5038 | hipage = addend & 0xffff0000; | |
5039 | ||
5040 | for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++) | |
5041 | { | |
5042 | address = bfd_get_32 (input_bfd, got_contents + i * 4); | |
5043 | if (hipage == (address & 0xffff0000)) | |
5044 | break; | |
5045 | } | |
5046 | ||
5047 | if (i == assigned_gotno) | |
5048 | { | |
5049 | if (assigned_gotno >= g->local_gotno) | |
5050 | { | |
5051 | (*_bfd_error_handler) | |
5052 | (_("more got entries are needed for hipage relocations")); | |
5053 | bfd_set_error (bfd_error_bad_value); | |
5054 | return false; | |
5055 | } | |
5056 | ||
5057 | bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4); | |
5058 | ++g->assigned_gotno; | |
5059 | } | |
5060 | ||
5061 | i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4; | |
5062 | bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff), | |
5063 | contents + relhi->r_offset); | |
5064 | ||
5065 | return true; | |
5066 | } | |
5067 | ||
5068 | /* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */ | |
5069 | ||
5070 | static void | |
5071 | mips_elf_relocate_global_got (input_bfd, rel, contents, offset) | |
5072 | bfd *input_bfd; | |
5073 | Elf_Internal_Rela *rel; | |
5074 | bfd_byte *contents; | |
5075 | bfd_vma offset; | |
5076 | { | |
5077 | bfd_vma insn; | |
5078 | ||
5079 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
5080 | bfd_put_32 (input_bfd, | |
5081 | (insn & 0xffff0000) | (offset & 0xffff), | |
5082 | contents + rel->r_offset); | |
5083 | } | |
5084 | ||
7403cb63 | 5085 | /* Returns the GOT section for ABFD. */ |
252b5132 | 5086 | |
7403cb63 MM |
5087 | static asection * |
5088 | mips_elf_got_section (abfd) | |
5089 | bfd *abfd; | |
252b5132 | 5090 | { |
7403cb63 MM |
5091 | return bfd_get_section_by_name (abfd, ".got"); |
5092 | } | |
5093 | ||
5094 | /* Returns the GOT information associated with the link indicated by | |
5095 | INFO. If SGOTP is non-NULL, it is filled in with the GOT | |
5096 | section. */ | |
5097 | ||
5098 | static struct mips_got_info * | |
5099 | mips_elf_got_info (abfd, sgotp) | |
5100 | bfd *abfd; | |
5101 | asection **sgotp; | |
5102 | { | |
5103 | asection *sgot; | |
252b5132 RH |
5104 | struct mips_got_info *g; |
5105 | ||
7403cb63 MM |
5106 | sgot = mips_elf_got_section (abfd); |
5107 | BFD_ASSERT (sgot != NULL); | |
5108 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5109 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
5110 | BFD_ASSERT (g != NULL); | |
252b5132 | 5111 | |
7403cb63 MM |
5112 | if (sgotp) |
5113 | *sgotp = sgot; | |
5114 | return g; | |
5115 | } | |
252b5132 | 5116 | |
7403cb63 | 5117 | /* Sign-extend VALUE, which has the indicated number of BITS. */ |
252b5132 | 5118 | |
7403cb63 MM |
5119 | static bfd_vma |
5120 | mips_elf_sign_extend (value, bits) | |
5121 | bfd_vma value; | |
5122 | int bits; | |
5123 | { | |
5124 | if (value & (1 << (bits - 1))) | |
5125 | /* VALUE is negative. */ | |
5126 | value |= ((bfd_vma) - 1) << bits; | |
5127 | ||
5128 | return value; | |
5129 | } | |
252b5132 | 5130 | |
7403cb63 MM |
5131 | /* Return non-zero if the indicated VALUE has overflowed the maximum |
5132 | range expressable by a signed number with the indicated number of | |
5133 | BITS. */ | |
252b5132 | 5134 | |
7403cb63 MM |
5135 | static boolean |
5136 | mips_elf_overflow_p (value, bits) | |
5137 | bfd_vma value; | |
5138 | int bits; | |
5139 | { | |
5140 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
252b5132 | 5141 | |
7403cb63 MM |
5142 | if (svalue > (1 << (bits - 1)) - 1) |
5143 | /* The value is too big. */ | |
5144 | return true; | |
5145 | else if (svalue < -(1 << (bits - 1))) | |
5146 | /* The value is too small. */ | |
5147 | return true; | |
5148 | ||
5149 | /* All is well. */ | |
5150 | return false; | |
5151 | } | |
252b5132 | 5152 | |
7403cb63 | 5153 | /* Calculate the %high function. */ |
252b5132 | 5154 | |
7403cb63 MM |
5155 | static bfd_vma |
5156 | mips_elf_high (value) | |
5157 | bfd_vma value; | |
5158 | { | |
5159 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
5160 | } | |
252b5132 | 5161 | |
7403cb63 MM |
5162 | /* Calculate the %higher function. */ |
5163 | ||
5164 | static bfd_vma | |
5165 | mips_elf_higher (value) | |
5f771d47 | 5166 | bfd_vma value ATTRIBUTE_UNUSED; |
7403cb63 MM |
5167 | { |
5168 | #ifdef BFD64 | |
5169 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
5170 | #else | |
5171 | abort (); | |
5172 | return (bfd_vma) -1; | |
5173 | #endif | |
5174 | } | |
5175 | ||
5176 | /* Calculate the %highest function. */ | |
5177 | ||
5178 | static bfd_vma | |
5179 | mips_elf_highest (value) | |
5f771d47 | 5180 | bfd_vma value ATTRIBUTE_UNUSED; |
7403cb63 MM |
5181 | { |
5182 | #ifdef BFD64 | |
5183 | return ((value + (bfd_vma) 0x800080008000) > 48) & 0xffff; | |
5184 | #else | |
5185 | abort (); | |
5186 | return (bfd_vma) -1; | |
5187 | #endif | |
5188 | } | |
5189 | ||
5190 | /* Returns the GOT index for the global symbol indicated by H. */ | |
5191 | ||
5192 | static bfd_vma | |
5193 | mips_elf_global_got_index (abfd, h) | |
5194 | bfd *abfd; | |
5195 | struct elf_link_hash_entry *h; | |
5196 | { | |
5197 | bfd_vma index; | |
5198 | asection *sgot; | |
5199 | struct mips_got_info *g; | |
5200 | ||
5201 | g = mips_elf_got_info (abfd, &sgot); | |
5202 | ||
5203 | /* Once we determine the global GOT entry with the lowest dynamic | |
5204 | symbol table index, we must put all dynamic symbols with greater | |
5205 | indices into the GOT. That makes it easy to calculate the GOT | |
5206 | offset. */ | |
5207 | BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx); | |
103186c6 MM |
5208 | index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno) |
5209 | * MIPS_ELF_GOT_SIZE (abfd)); | |
7403cb63 MM |
5210 | BFD_ASSERT (index < sgot->_raw_size); |
5211 | ||
5212 | return index; | |
5213 | } | |
5214 | ||
5215 | /* Returns the offset for the entry at the INDEXth position | |
5216 | in the GOT. */ | |
5217 | ||
5218 | static bfd_vma | |
5219 | mips_elf_got_offset_from_index (dynobj, output_bfd, index) | |
5220 | bfd *dynobj; | |
5221 | bfd *output_bfd; | |
5222 | bfd_vma index; | |
5223 | { | |
5224 | asection *sgot; | |
5225 | bfd_vma gp; | |
7403cb63 | 5226 | |
103186c6 | 5227 | sgot = mips_elf_got_section (dynobj); |
7403cb63 MM |
5228 | gp = _bfd_get_gp_value (output_bfd); |
5229 | return (sgot->output_section->vma + sgot->output_offset + index - | |
5230 | gp); | |
5231 | } | |
5232 | ||
5233 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
5234 | symbol table index lower than any we've seen to date, record it for | |
5235 | posterity. */ | |
5236 | ||
5237 | static boolean | |
5238 | mips_elf_record_global_got_symbol (h, info, g) | |
5239 | struct elf_link_hash_entry *h; | |
5240 | struct bfd_link_info *info; | |
5f771d47 | 5241 | struct mips_got_info *g ATTRIBUTE_UNUSED; |
7403cb63 MM |
5242 | { |
5243 | /* A global symbol in the GOT must also be in the dynamic symbol | |
5244 | table. */ | |
5245 | if (h->dynindx == -1 | |
5246 | && !bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5247 | return false; | |
5248 | ||
5249 | /* If we've already marked this entry as need GOT space, we don't | |
5250 | need to do it again. */ | |
5251 | if (h->got.offset != (bfd_vma) - 1) | |
5252 | return true; | |
5253 | ||
5254 | /* By setting this to a value other than -1, we are indicating that | |
5255 | there needs to be a GOT entry for H. */ | |
5256 | h->got.offset = 0; | |
5257 | ||
5258 | return true; | |
5259 | } | |
5260 | ||
5261 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting | |
5262 | the dynamic symbols. */ | |
5263 | ||
5264 | struct mips_elf_hash_sort_data | |
5265 | { | |
5266 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
5267 | index. */ | |
5268 | struct elf_link_hash_entry *low; | |
5269 | /* The least dynamic symbol table index corresponding to a symbol | |
5270 | with a GOT entry. */ | |
5271 | long min_got_dynindx; | |
5272 | /* The greatest dynamic symbol table index not corresponding to a | |
5273 | symbol without a GOT entry. */ | |
5274 | long max_non_got_dynindx; | |
5275 | }; | |
5276 | ||
5277 | /* If H needs a GOT entry, assign it the highest available dynamic | |
5278 | index. Otherwise, assign it the lowest available dynamic | |
5279 | index. */ | |
5280 | ||
5281 | static boolean | |
5282 | mips_elf_sort_hash_table_f (h, data) | |
5283 | struct mips_elf_link_hash_entry *h; | |
5284 | PTR data; | |
5285 | { | |
5286 | struct mips_elf_hash_sort_data *hsd | |
5287 | = (struct mips_elf_hash_sort_data *) data; | |
5288 | ||
5289 | /* Symbols without dynamic symbol table entries aren't interesting | |
5290 | at all. */ | |
5291 | if (h->root.dynindx == -1) | |
5292 | return true; | |
5293 | ||
5294 | if (h->root.got.offset != 0) | |
5295 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
5296 | else | |
5297 | { | |
5298 | h->root.dynindx = --hsd->min_got_dynindx; | |
5299 | hsd->low = (struct elf_link_hash_entry *) h; | |
5300 | } | |
5301 | ||
5302 | return true; | |
5303 | } | |
5304 | ||
5305 | /* Sort the dynamic symbol table so that symbols that need GOT entries | |
5306 | appear towards the end. This reduces the amount of GOT space | |
5307 | required. */ | |
5308 | ||
5309 | static boolean | |
5310 | mips_elf_sort_hash_table (info) | |
5311 | struct bfd_link_info *info; | |
5312 | { | |
5313 | struct mips_elf_hash_sort_data hsd; | |
5314 | struct mips_got_info *g; | |
5315 | bfd *dynobj; | |
5316 | ||
5317 | dynobj = elf_hash_table (info)->dynobj; | |
5318 | ||
5319 | hsd.low = NULL; | |
5320 | hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount; | |
5321 | hsd.max_non_got_dynindx = 1; | |
5322 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) | |
5323 | elf_hash_table (info)), | |
5324 | mips_elf_sort_hash_table_f, | |
5325 | &hsd); | |
5326 | ||
5327 | /* There shoud have been enough room in the symbol table to | |
5328 | accomodate both the GOT and non-GOT symbols. */ | |
5329 | BFD_ASSERT (hsd.min_got_dynindx == hsd.max_non_got_dynindx); | |
5330 | ||
5331 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
5332 | table index in the GOT. */ | |
5333 | g = mips_elf_got_info (dynobj, NULL); | |
5334 | g->global_gotsym = hsd.low; | |
5335 | ||
5336 | return true; | |
5337 | } | |
5338 | ||
5339 | /* Create a local GOT entry for VALUE. Return the index of the entry, | |
5340 | or -1 if it could not be created. */ | |
5341 | ||
5342 | static bfd_vma | |
5343 | mips_elf_create_local_got_entry (abfd, g, sgot, value) | |
5344 | bfd *abfd; | |
5345 | struct mips_got_info *g; | |
5346 | asection *sgot; | |
5347 | bfd_vma value; | |
5348 | { | |
5349 | if (g->assigned_gotno >= g->local_gotno) | |
5350 | { | |
5351 | /* We didn't allocate enough space in the GOT. */ | |
5352 | (*_bfd_error_handler) | |
5353 | (_("not enough GOT space for local GOT entries")); | |
5354 | bfd_set_error (bfd_error_bad_value); | |
5355 | return (bfd_vma) -1; | |
5356 | } | |
5357 | ||
103186c6 MM |
5358 | MIPS_ELF_PUT_WORD (abfd, value, |
5359 | (sgot->contents | |
5360 | + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno)); | |
5361 | return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; | |
7403cb63 MM |
5362 | } |
5363 | ||
5364 | /* Returns the GOT offset at which the indicated address can be found. | |
5365 | If there is not yet a GOT entry for this value, create one. Returns | |
5366 | -1 if no satisfactory GOT offset can be found. */ | |
5367 | ||
5368 | static bfd_vma | |
5369 | mips_elf_local_got_index (abfd, info, value) | |
5370 | bfd *abfd; | |
5371 | struct bfd_link_info *info; | |
5372 | bfd_vma value; | |
5373 | { | |
5374 | asection *sgot; | |
5375 | struct mips_got_info *g; | |
5376 | bfd_byte *entry; | |
5377 | ||
5378 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
5379 | ||
5380 | /* Look to see if we already have an appropriate entry. */ | |
103186c6 MM |
5381 | for (entry = (sgot->contents |
5382 | + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO); | |
5383 | entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno; | |
5384 | entry += MIPS_ELF_GOT_SIZE (abfd)) | |
7403cb63 | 5385 | { |
103186c6 | 5386 | bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry); |
7403cb63 MM |
5387 | if (address == value) |
5388 | return entry - sgot->contents; | |
5389 | } | |
5390 | ||
5391 | return mips_elf_create_local_got_entry (abfd, g, sgot, value); | |
5392 | } | |
5393 | ||
5394 | /* Find a GOT entry that is within 32KB of the VALUE. These entries | |
5395 | are supposed to be placed at small offsets in the GOT, i.e., | |
5396 | within 32KB of GP. Return the index into the GOT for this page, | |
5397 | and store the offset from this entry to the desired address in | |
5398 | OFFSETP, if it is non-NULL. */ | |
5399 | ||
5400 | static bfd_vma | |
5401 | mips_elf_got_page (abfd, info, value, offsetp) | |
5402 | bfd *abfd; | |
5403 | struct bfd_link_info *info; | |
5404 | bfd_vma value; | |
5405 | bfd_vma *offsetp; | |
5406 | { | |
5407 | asection *sgot; | |
5408 | struct mips_got_info *g; | |
5409 | bfd_byte *entry; | |
5410 | bfd_byte *last_entry; | |
5411 | bfd_vma index; | |
5412 | bfd_vma address; | |
5413 | ||
5414 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
5415 | ||
5416 | /* Look to see if we aleady have an appropriate entry. */ | |
103186c6 MM |
5417 | last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno; |
5418 | for (entry = (sgot->contents | |
5419 | + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO); | |
7403cb63 | 5420 | entry != last_entry; |
103186c6 | 5421 | entry += MIPS_ELF_GOT_SIZE (abfd)) |
7403cb63 | 5422 | { |
103186c6 MM |
5423 | address = MIPS_ELF_GET_WORD (abfd, entry); |
5424 | ||
7403cb63 MM |
5425 | if (!mips_elf_overflow_p (value - address, 16)) |
5426 | { | |
5427 | /* This entry will serve as the page pointer. We can add a | |
5428 | 16-bit number to it to get the actual address. */ | |
5429 | index = entry - sgot->contents; | |
5430 | break; | |
252b5132 | 5431 | } |
7403cb63 MM |
5432 | } |
5433 | ||
5434 | /* If we didn't have an appropriate entry, we create one now. */ | |
5435 | if (entry == last_entry) | |
5436 | index = mips_elf_create_local_got_entry (abfd, g, sgot, value); | |
5437 | ||
5438 | if (offsetp) | |
5439 | { | |
103186c6 | 5440 | address = MIPS_ELF_GET_WORD (abfd, entry); |
7403cb63 MM |
5441 | *offsetp = value - address; |
5442 | } | |
5443 | ||
5444 | return index; | |
5445 | } | |
5446 | ||
5447 | /* Find a GOT entry whose higher-order 16 bits are the same as those | |
5448 | for value. Return the index into the GOT for this entry. */ | |
5449 | ||
5450 | static bfd_vma | |
5451 | mips_elf_got16_entry (abfd, info, value) | |
5452 | bfd *abfd; | |
5453 | struct bfd_link_info *info; | |
5454 | bfd_vma value; | |
5455 | { | |
5456 | asection *sgot; | |
5457 | struct mips_got_info *g; | |
5458 | bfd_byte *entry; | |
5459 | bfd_byte *last_entry; | |
5460 | bfd_vma index; | |
5461 | bfd_vma address; | |
5462 | ||
5463 | value &= 0xffff0000; | |
5464 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
5465 | ||
5466 | /* Look to see if we already have an appropriate entry. */ | |
103186c6 MM |
5467 | last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno; |
5468 | for (entry = (sgot->contents | |
5469 | + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO); | |
7403cb63 | 5470 | entry != last_entry; |
103186c6 | 5471 | entry += MIPS_ELF_GOT_SIZE (abfd)) |
7403cb63 | 5472 | { |
103186c6 | 5473 | address = MIPS_ELF_GET_WORD (abfd, entry); |
e049a0de | 5474 | if ((address & 0xffff0000) == value) |
252b5132 | 5475 | { |
7403cb63 | 5476 | /* This entry has the right high-order 16 bits. */ |
103186c6 | 5477 | index = MIPS_ELF_GOT_SIZE (abfd) * (entry - sgot->contents); |
7403cb63 MM |
5478 | break; |
5479 | } | |
5480 | } | |
5481 | ||
5482 | /* If we didn't have an appropriate entry, we create one now. */ | |
5483 | if (entry == last_entry) | |
5484 | index = mips_elf_create_local_got_entry (abfd, g, sgot, value); | |
5485 | ||
5486 | return index; | |
5487 | } | |
5488 | ||
5489 | /* Sets *ADDENDP to the addend for the first R_MIPS_LO16 relocation | |
5490 | found, beginning with RELOCATION. RELEND is one-past-the-end of | |
5491 | the relocation table. */ | |
5492 | ||
5493 | static boolean | |
5494 | mips_elf_next_lo16_addend (relocation, relend, addendp) | |
103186c6 MM |
5495 | const Elf_Internal_Rela *relocation; |
5496 | const Elf_Internal_Rela *relend; | |
7403cb63 MM |
5497 | bfd_vma *addendp; |
5498 | { | |
5499 | /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be | |
5500 | immediately following. However, for the IRIX6 ABI, the next | |
5501 | relocation may be a composed relocation consisting of several | |
5502 | relocations for the same address. In that case, the R_MIPS_LO16 | |
5503 | relo!scation may occur as one of these. We permit a similar | |
5504 | extension in general, as that is useful for GCC. */ | |
5505 | while (relocation < relend) | |
5506 | { | |
5507 | if (ELF32_R_TYPE (relocation->r_info) == R_MIPS_LO16) | |
5508 | { | |
5509 | *addendp = relocation->r_addend; | |
5510 | return true; | |
5511 | } | |
5512 | ||
5513 | ++relocation; | |
5514 | } | |
5515 | ||
5516 | /* We didn't find it. */ | |
5517 | return false; | |
5518 | } | |
5519 | ||
5520 | /* Create a rel.dyn relocation for the dynamic linker to resolve. The | |
5521 | relocatin is against the symbol with the dynamic symbol table index | |
5522 | DYNINDX. REL is the original relocation, which is now being made | |
5523 | dynamic. */ | |
5524 | ||
5525 | static unsigned int | |
5526 | mips_elf_create_dynamic_relocation (output_bfd, info, rel, dynindx, | |
5527 | addend, input_section) | |
5528 | bfd *output_bfd; | |
5529 | struct bfd_link_info *info; | |
103186c6 | 5530 | const Elf_Internal_Rela *rel; |
7403cb63 MM |
5531 | long dynindx; |
5532 | bfd_vma addend; | |
5533 | asection *input_section; | |
5534 | { | |
5535 | Elf_Internal_Rel outrel; | |
5536 | boolean skip; | |
5537 | asection *sreloc; | |
5538 | bfd *dynobj; | |
5539 | int r_type; | |
5540 | ||
5541 | r_type = ELF32_R_TYPE (rel->r_info); | |
5542 | dynobj = elf_hash_table (info)->dynobj; | |
103186c6 MM |
5543 | sreloc |
5544 | = bfd_get_section_by_name (dynobj, | |
5545 | MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)); | |
7403cb63 MM |
5546 | BFD_ASSERT (sreloc != NULL); |
5547 | ||
5548 | skip = false; | |
5549 | ||
5550 | /* The symbol for the relocation is the same as it was for the | |
5551 | original relocation. */ | |
5552 | outrel.r_info = ELF32_R_INFO (dynindx, R_MIPS_REL32); | |
5553 | ||
5554 | /* The offset for the dynamic relocation is the same as for the | |
5555 | original relocation, adjusted by the offset at which the original | |
5556 | section is output. */ | |
5557 | if (elf_section_data (input_section)->stab_info == NULL) | |
5558 | outrel.r_offset = rel->r_offset; | |
5559 | else | |
5560 | { | |
5561 | bfd_vma off; | |
5562 | ||
5563 | off = (_bfd_stab_section_offset | |
5564 | (output_bfd, &elf_hash_table (info)->stab_info, | |
5565 | input_section, | |
5566 | &elf_section_data (input_section)->stab_info, | |
5567 | rel->r_offset)); | |
5568 | if (off == (bfd_vma) -1) | |
5569 | skip = true; | |
5570 | outrel.r_offset = off; | |
5571 | } | |
5572 | outrel.r_offset += (input_section->output_section->vma | |
5573 | + input_section->output_offset); | |
5574 | ||
5575 | /* If we've decided to skip this relocation, just output an emtpy | |
5576 | record. */ | |
5577 | if (skip) | |
5578 | memset (&outrel, 0, sizeof (outrel)); | |
5579 | ||
103186c6 MM |
5580 | if (ABI_64_P (output_bfd)) |
5581 | { | |
5582 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
5583 | (output_bfd, &outrel, | |
5584 | (sreloc->contents | |
5585 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
5586 | } | |
5587 | else | |
5588 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
5589 | (((Elf32_External_Rel *) | |
5590 | sreloc->contents) | |
5591 | + sreloc->reloc_count)); | |
7403cb63 MM |
5592 | ++sreloc->reloc_count; |
5593 | ||
5594 | /* Make sure the output section is writable. The dynamic linker | |
5595 | will be writing to it. */ | |
5596 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
5597 | |= SHF_WRITE; | |
5598 | ||
5599 | /* On IRIX5, make an entry of compact relocation info. */ | |
5600 | if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5) | |
5601 | { | |
5602 | asection* scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
5603 | bfd_byte *cr; | |
5604 | ||
5605 | if (scpt) | |
5606 | { | |
5607 | Elf32_crinfo cptrel; | |
5608 | ||
5609 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5610 | cptrel.vaddr = (rel->r_offset | |
5611 | + input_section->output_section->vma | |
5612 | + input_section->output_offset); | |
5613 | if (r_type == R_MIPS_REL32) | |
5614 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
252b5132 | 5615 | else |
7403cb63 MM |
5616 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); |
5617 | mips_elf_set_cr_dist2to (cptrel, 0); | |
5618 | cptrel.konst = addend; | |
5619 | ||
5620 | cr = (scpt->contents | |
5621 | + sizeof (Elf32_External_compact_rel)); | |
5622 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
5623 | ((Elf32_External_crinfo *) cr | |
5624 | + scpt->reloc_count)); | |
5625 | ++scpt->reloc_count; | |
5626 | } | |
5627 | } | |
252b5132 | 5628 | |
7403cb63 MM |
5629 | return sreloc->reloc_count - 1; |
5630 | } | |
252b5132 | 5631 | |
7403cb63 MM |
5632 | /* Calculate the value produced by the RELOCATION (which comes from |
5633 | the INPUT_BFD). The ADDEND is the addend to use for this | |
5634 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
5635 | ||
5636 | The result of the relocation calculation is stored in VALUEP. | |
5637 | ||
5638 | This function returns bfd_reloc_continue if the caller need take no | |
5639 | further action regarding this relocation, bfd_reloc_notsupported if | |
5640 | something goes dramatically wrong, bfd_reloc_overflow if an | |
5641 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
5642 | ||
5643 | static bfd_reloc_status_type | |
5644 | mips_elf_calculate_relocation (abfd, | |
5645 | input_bfd, | |
5646 | input_section, | |
5647 | info, | |
5648 | relocation, | |
5649 | addend, | |
5650 | howto, | |
7403cb63 MM |
5651 | local_syms, |
5652 | local_sections, | |
5653 | valuep, | |
5654 | namep) | |
5655 | bfd *abfd; | |
5656 | bfd *input_bfd; | |
5657 | asection *input_section; | |
5658 | struct bfd_link_info *info; | |
103186c6 | 5659 | const Elf_Internal_Rela *relocation; |
7403cb63 MM |
5660 | bfd_vma addend; |
5661 | reloc_howto_type *howto; | |
7403cb63 MM |
5662 | Elf_Internal_Sym *local_syms; |
5663 | asection **local_sections; | |
5664 | bfd_vma *valuep; | |
5665 | const char **namep; | |
5666 | { | |
5667 | /* The eventual value we will return. */ | |
5668 | bfd_vma value; | |
5669 | /* The address of the symbol against which the relocation is | |
5670 | occurring. */ | |
5671 | bfd_vma symbol = 0; | |
5672 | /* The final GP value to be used for the relocatable, executable, or | |
5673 | shared object file being produced. */ | |
5674 | bfd_vma gp = (bfd_vma) - 1; | |
5675 | /* The place (section offset or address) of the storage unit being | |
5676 | relocated. */ | |
5677 | bfd_vma p; | |
5678 | /* The value of GP used to create the relocatable object. */ | |
5679 | bfd_vma gp0 = (bfd_vma) - 1; | |
5680 | /* The offset into the global offset table at which the address of | |
5681 | the relocation entry symbol, adjusted by the addend, resides | |
5682 | during execution. */ | |
5683 | bfd_vma g = (bfd_vma) - 1; | |
5684 | /* The section in which the symbol referenced by the relocation is | |
5685 | located. */ | |
5686 | asection *sec = NULL; | |
5687 | struct mips_elf_link_hash_entry* h = NULL; | |
103186c6 MM |
5688 | /* True if the symbol referred to by this relocation is a local |
5689 | symbol. */ | |
7403cb63 | 5690 | boolean local_p; |
103186c6 | 5691 | /* True if the symbol referred to by this relocation is "_gp_disp". */ |
7403cb63 MM |
5692 | boolean gp_disp_p = false; |
5693 | Elf_Internal_Shdr *symtab_hdr; | |
5694 | size_t extsymoff; | |
103186c6 | 5695 | unsigned long r_symndx; |
7403cb63 | 5696 | int r_type; |
103186c6 MM |
5697 | /* True if overflow occurred during the calculation of the |
5698 | relocation value. */ | |
7403cb63 MM |
5699 | boolean overflowed_p; |
5700 | ||
5701 | /* Parse the relocation. */ | |
5702 | r_symndx = ELF32_R_SYM (relocation->r_info); | |
5703 | r_type = ELF32_R_TYPE (relocation->r_info); | |
5704 | p = (input_section->output_section->vma | |
5705 | + input_section->output_offset | |
5706 | + relocation->r_offset); | |
5707 | ||
5708 | /* Assume that there will be no overflow. */ | |
5709 | overflowed_p = false; | |
5710 | ||
5711 | /* Figure out whether or not the symbol is local. */ | |
5712 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5713 | if (elf_bad_symtab (input_bfd)) | |
5714 | { | |
5715 | /* The symbol table does not follow the rule that local symbols | |
5716 | must come before globals. */ | |
5717 | extsymoff = 0; | |
5718 | local_p = local_sections[r_symndx] != NULL; | |
5719 | } | |
5720 | else | |
5721 | { | |
5722 | extsymoff = symtab_hdr->sh_info; | |
5723 | local_p = r_symndx < extsymoff; | |
5724 | } | |
5725 | ||
5726 | /* Figure out the value of the symbol. */ | |
5727 | if (local_p) | |
5728 | { | |
5729 | Elf_Internal_Sym *sym; | |
5730 | ||
5731 | sym = local_syms + r_symndx; | |
5732 | sec = local_sections[r_symndx]; | |
5733 | ||
5734 | symbol = sec->output_section->vma + sec->output_offset; | |
5735 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
5736 | symbol += sym->st_value; | |
5737 | ||
5738 | /* MIPS16 text labels should be treated as odd. */ | |
5739 | if (sym->st_other == STO_MIPS16) | |
5740 | ++symbol; | |
5741 | ||
5742 | /* Record the name of this symbol, for our caller. */ | |
5743 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5744 | symtab_hdr->sh_link, | |
5745 | sym->st_name); | |
e049a0de | 5746 | if (*namep == '\0') |
7403cb63 MM |
5747 | *namep = bfd_section_name (input_bfd, sec); |
5748 | } | |
5749 | else | |
5750 | { | |
5751 | /* For global symbols we look up the symbol in the hash-table. */ | |
5752 | h = ((struct mips_elf_link_hash_entry *) | |
5753 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5754 | /* Find the real hash-table entry for this symbol. */ | |
5755 | while (h->root.type == bfd_link_hash_indirect | |
5756 | || h->root.type == bfd_link_hash_warning) | |
5757 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5758 | ||
5759 | /* Record the name of this symbol, for our caller. */ | |
5760 | *namep = h->root.root.root.string; | |
5761 | ||
5762 | /* See if this is the special _gp_disp symbol. Note that such a | |
5763 | symbol must always be a global symbol. */ | |
5764 | if (strcmp (h->root.root.root.string, "_gp_disp") == 0) | |
5765 | { | |
5766 | /* Relocations against _gp_disp are permitted only with | |
5767 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
5768 | if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16) | |
5769 | return bfd_reloc_notsupported; | |
5770 | ||
5771 | gp_disp_p = true; | |
5772 | } | |
5773 | ||
5774 | /* If this symbol is defined, calculate its address. */ | |
5775 | if ((h->root.root.type == bfd_link_hash_defined | |
5776 | || h->root.root.type == bfd_link_hash_defweak) | |
5777 | && h->root.root.u.def.section) | |
5778 | { | |
5779 | sec = h->root.root.u.def.section; | |
5780 | if (sec->output_section) | |
5781 | symbol = (h->root.root.u.def.value | |
5782 | + sec->output_section->vma | |
5783 | + sec->output_offset); | |
252b5132 | 5784 | else |
7403cb63 MM |
5785 | symbol = h->root.root.u.def.value; |
5786 | } | |
5787 | else | |
5788 | { | |
5789 | (*info->callbacks->undefined_symbol) | |
5790 | (info, h->root.root.root.string, input_bfd, | |
5791 | input_section, relocation->r_offset); | |
5792 | return bfd_reloc_undefined; | |
5793 | } | |
5794 | } | |
252b5132 | 5795 | |
7403cb63 MM |
5796 | /* If we haven't already determined the GOT offset, or the GP value, |
5797 | and we're going to need it, get it now. */ | |
5798 | switch (r_type) | |
5799 | { | |
5800 | case R_MIPS_CALL16: | |
5801 | case R_MIPS_GOT_DISP: | |
5802 | case R_MIPS_GOT_HI16: | |
5803 | case R_MIPS_CALL_HI16: | |
5804 | case R_MIPS_GOT_LO16: | |
5805 | case R_MIPS_CALL_LO16: | |
5806 | /* Find the index into the GOT where this value is located. */ | |
5807 | if (h) | |
5808 | { | |
5809 | BFD_ASSERT (addend == 0); | |
5810 | g = mips_elf_global_got_index | |
5811 | (elf_hash_table (info)->dynobj, | |
5812 | (struct elf_link_hash_entry*) h); | |
5813 | } | |
5814 | else | |
5815 | { | |
5816 | g = mips_elf_local_got_index (abfd, info, symbol + addend); | |
5817 | if (g == (bfd_vma) -1) | |
5818 | return false; | |
5819 | } | |
252b5132 | 5820 | |
7403cb63 MM |
5821 | /* Convert GOT indices to actual offsets. */ |
5822 | g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj, | |
5823 | abfd, g); | |
5824 | break; | |
5825 | ||
5826 | case R_MIPS_HI16: | |
5827 | case R_MIPS_LO16: | |
5828 | case R_MIPS_GPREL16: | |
5829 | case R_MIPS_GPREL32: | |
5830 | gp0 = _bfd_get_gp_value (input_bfd); | |
5831 | gp = _bfd_get_gp_value (abfd); | |
5832 | break; | |
252b5132 | 5833 | |
7403cb63 MM |
5834 | default: |
5835 | break; | |
5836 | } | |
252b5132 | 5837 | |
7403cb63 MM |
5838 | /* Figure out what kind of relocation is being performed. */ |
5839 | switch (r_type) | |
5840 | { | |
5841 | case R_MIPS_NONE: | |
5842 | return bfd_reloc_continue; | |
252b5132 | 5843 | |
7403cb63 MM |
5844 | case R_MIPS_16: |
5845 | value = symbol + mips_elf_sign_extend (addend, 16); | |
5846 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5847 | break; | |
252b5132 | 5848 | |
7403cb63 MM |
5849 | case R_MIPS_32: |
5850 | case R_MIPS_REL32: | |
a3c7651d | 5851 | case R_MIPS_64: |
7403cb63 MM |
5852 | /* If we're creating a shared library, or this relocation is |
5853 | against a symbol in a shared library, then we can't know | |
5854 | where the symbol will end up. So, we create a relocation | |
5855 | record in the output, and leave the job up to the dynamic | |
5856 | linker. */ | |
5857 | if (info->shared || !sec->output_section) | |
5858 | { | |
5859 | unsigned int reloc_index; | |
5860 | ||
5861 | BFD_ASSERT (h != NULL); | |
5862 | reloc_index | |
5863 | = mips_elf_create_dynamic_relocation (abfd, | |
a3c7651d MM |
5864 | info, |
5865 | relocation, | |
5866 | h->root.dynindx, | |
5867 | addend, | |
5868 | input_section); | |
7403cb63 MM |
5869 | if (h->min_dyn_reloc_index == 0 |
5870 | || reloc_index < h->min_dyn_reloc_index) | |
5871 | h->min_dyn_reloc_index = reloc_index; | |
5872 | value = symbol + addend; | |
5873 | } | |
5874 | else | |
5875 | { | |
a3c7651d | 5876 | if (r_type != R_MIPS_REL32) |
7403cb63 MM |
5877 | value = symbol + addend; |
5878 | else | |
5879 | value = addend; | |
5880 | } | |
5881 | value &= howto->dst_mask; | |
5882 | break; | |
5883 | ||
5884 | case R_MIPS_26: | |
5885 | if (local_p) | |
5886 | value = (((addend << 2) | (p & 0xf0000000)) + symbol) >> 2; | |
5887 | else | |
5888 | value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2; | |
5889 | value &= howto->dst_mask; | |
5890 | break; | |
5891 | ||
5892 | case R_MIPS_HI16: | |
5893 | if (!gp_disp_p) | |
5894 | { | |
5895 | value = mips_elf_high (addend + symbol); | |
5896 | value &= howto->dst_mask; | |
5897 | } | |
5898 | else | |
5899 | { | |
5900 | value = mips_elf_high (addend + gp - p); | |
5901 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5902 | } | |
5903 | break; | |
5904 | ||
5905 | case R_MIPS_LO16: | |
5906 | if (!gp_disp_p) | |
5907 | value = (symbol + addend) & howto->dst_mask; | |
5908 | else | |
5909 | { | |
5910 | value = addend + gp - p + 4; | |
5911 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5912 | } | |
5913 | break; | |
5914 | ||
5915 | case R_MIPS_LITERAL: | |
5916 | /* Because we don't merge literal sections, we can handle this | |
5917 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5918 | shared literals, and then we will need to additional work | |
5919 | here. */ | |
5920 | ||
5921 | /* Fall through. */ | |
5922 | ||
5923 | case R_MIPS_GPREL16: | |
5924 | if (local_p) | |
5925 | value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp; | |
5926 | else | |
5927 | value = mips_elf_sign_extend (addend, 16) + symbol - gp; | |
5928 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5929 | break; | |
5930 | ||
5931 | case R_MIPS_GOT16: | |
5932 | if (local_p) | |
5933 | { | |
5934 | value = mips_elf_got16_entry (abfd, info, symbol + addend); | |
5935 | if (value == (bfd_vma) -1) | |
5936 | return false; | |
5937 | value | |
5938 | = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj, | |
5939 | abfd, | |
5940 | value); | |
5941 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5942 | break; | |
5943 | } | |
5944 | ||
5945 | /* Fall through. */ | |
5946 | ||
5947 | case R_MIPS_CALL16: | |
5948 | case R_MIPS_GOT_DISP: | |
5949 | value = g; | |
5950 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5951 | break; | |
5952 | ||
5953 | case R_MIPS_GPREL32: | |
5954 | value = (addend + symbol + gp0 - gp) & howto->dst_mask; | |
5955 | break; | |
5956 | ||
5957 | case R_MIPS_PC16: | |
5958 | value = mips_elf_sign_extend (addend, 16) + symbol - p; | |
5959 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5960 | break; | |
5961 | ||
5962 | case R_MIPS_GOT_HI16: | |
5963 | case R_MIPS_CALL_HI16: | |
5964 | /* We're allowed to handle these two relocations identically. | |
5965 | The dynamic linker is allowed to handle the CALL relocations | |
5966 | differently by creating a lazy evaluation stub. */ | |
5967 | value = g; | |
5968 | value = mips_elf_high (value); | |
5969 | value &= howto->dst_mask; | |
5970 | break; | |
5971 | ||
5972 | case R_MIPS_GOT_LO16: | |
5973 | case R_MIPS_CALL_LO16: | |
5974 | value = g & howto->dst_mask; | |
5975 | break; | |
5976 | ||
7403cb63 MM |
5977 | case R_MIPS_GOT_PAGE: |
5978 | value = mips_elf_got_page (abfd, info, symbol + addend, NULL); | |
5979 | if (value == (bfd_vma) -1) | |
5980 | return false; | |
5981 | value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj, | |
5982 | abfd, | |
5983 | value); | |
5984 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5985 | break; | |
5986 | ||
5987 | case R_MIPS_GOT_OFST: | |
5988 | mips_elf_got_page (abfd, info, symbol + addend, &value); | |
5989 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5990 | break; | |
5991 | ||
5992 | case R_MIPS_SUB: | |
5993 | value = symbol - addend; | |
5994 | value &= howto->dst_mask; | |
5995 | break; | |
5996 | ||
5997 | case R_MIPS_HIGHER: | |
5998 | value = mips_elf_higher (addend + symbol); | |
5999 | value &= howto->dst_mask; | |
6000 | break; | |
6001 | ||
6002 | case R_MIPS_HIGHEST: | |
6003 | value = mips_elf_highest (addend + symbol); | |
6004 | value &= howto->dst_mask; | |
6005 | break; | |
6006 | ||
6007 | case R_MIPS_SCN_DISP: | |
6008 | value = symbol + addend - sec->output_offset; | |
6009 | value &= howto->dst_mask; | |
6010 | break; | |
6011 | ||
6012 | case R_MIPS_PJUMP: | |
6013 | case R_MIPS_JALR: | |
6014 | /* Both of these may be ignored. R_MIPS_JALR is an optimization | |
6015 | hint; we could improve performance by honoring that hint. */ | |
6016 | return bfd_reloc_continue; | |
6017 | ||
6018 | case R_MIPS_GNU_VTINHERIT: | |
6019 | case R_MIPS_GNU_VTENTRY: | |
6020 | /* We don't do anything with these at present. */ | |
6021 | return bfd_reloc_continue; | |
6022 | ||
6023 | case R_MIPS16_26: | |
6024 | case R_MIPS16_GPREL: | |
6025 | /* These relocations, used for MIPS16, are not clearly | |
6026 | documented anywhere. What do they do? */ | |
6027 | return bfd_reloc_notsupported; | |
6028 | ||
6029 | default: | |
6030 | /* An unrecognized relocation type. */ | |
6031 | return bfd_reloc_notsupported; | |
6032 | } | |
6033 | ||
6034 | /* Store the VALUE for our caller. */ | |
6035 | *valuep = value; | |
6036 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
6037 | } | |
6038 | ||
6039 | /* Obtain the field relocated by RELOCATION. */ | |
6040 | ||
6041 | static bfd_vma | |
6042 | mips_elf_obtain_contents (howto, relocation, input_bfd, contents) | |
6043 | reloc_howto_type *howto; | |
103186c6 | 6044 | const Elf_Internal_Rela *relocation; |
7403cb63 MM |
6045 | bfd *input_bfd; |
6046 | bfd_byte *contents; | |
6047 | { | |
6048 | bfd_vma x; | |
6049 | bfd_byte *location = contents + relocation->r_offset; | |
6050 | ||
6051 | switch (bfd_get_reloc_size (howto)) | |
6052 | { | |
6053 | case 0: | |
6054 | x = 0; | |
6055 | break; | |
6056 | ||
6057 | case 1: | |
6058 | x = bfd_get_8 (input_bfd, location); | |
6059 | break; | |
6060 | ||
6061 | case 2: | |
6062 | x = bfd_get_16 (input_bfd, location); | |
6063 | break; | |
6064 | ||
6065 | case 4: | |
6066 | x = bfd_get_32 (input_bfd, location); | |
6067 | break; | |
6068 | ||
6069 | case 8: | |
6070 | #ifdef BFD64 | |
6071 | x = bfd_get_64 (input_bfd, location); | |
6072 | #else | |
6073 | abort (); | |
6074 | #endif | |
6075 | break; | |
6076 | ||
6077 | default: | |
6078 | abort (); | |
6079 | break; | |
6080 | } | |
6081 | ||
6082 | return x; | |
6083 | } | |
6084 | ||
6085 | /* It has been determined that the result of the RELOCATION is the | |
6086 | VALUE. Use HOWTO to place VALUE into the output file at the | |
6087 | appropriate position. The SECTION is the section to which the | |
6088 | relocatin applies. | |
6089 | ||
6090 | Returns false if anything goes wrong. */ | |
252b5132 | 6091 | |
7403cb63 MM |
6092 | static void |
6093 | mips_elf_perform_relocation (howto, relocation, value, input_bfd, contents) | |
6094 | reloc_howto_type *howto; | |
103186c6 | 6095 | const Elf_Internal_Rela *relocation; |
7403cb63 MM |
6096 | bfd_vma value; |
6097 | bfd *input_bfd; | |
6098 | bfd_byte *contents; | |
6099 | { | |
6100 | bfd_vma x; | |
6101 | bfd_byte *location = contents + relocation->r_offset; | |
252b5132 | 6102 | |
7403cb63 MM |
6103 | /* Obtain the current value. */ |
6104 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
252b5132 | 6105 | |
7403cb63 MM |
6106 | /* Clear the field we are setting. */ |
6107 | x &= ~howto->dst_mask; | |
252b5132 | 6108 | |
7403cb63 MM |
6109 | /* Set the field. */ |
6110 | x |= (value & howto->dst_mask); | |
252b5132 | 6111 | |
7403cb63 MM |
6112 | /* Put the value into the output. */ |
6113 | switch (bfd_get_reloc_size (howto)) | |
6114 | { | |
6115 | case 0: | |
6116 | x = 0; | |
6117 | break; | |
252b5132 | 6118 | |
7403cb63 MM |
6119 | case 1: |
6120 | bfd_put_8 (input_bfd, x, location); | |
6121 | break; | |
252b5132 | 6122 | |
7403cb63 MM |
6123 | case 2: |
6124 | bfd_put_16 (input_bfd, x, location); | |
6125 | break; | |
252b5132 | 6126 | |
7403cb63 MM |
6127 | case 4: |
6128 | bfd_put_32 (input_bfd, x, location); | |
6129 | break; | |
252b5132 | 6130 | |
7403cb63 MM |
6131 | case 8: |
6132 | #ifdef BFD64 | |
6133 | bfd_put_64 (input_bfd, x, location); | |
6134 | #else | |
6135 | abort (); | |
6136 | #endif | |
6137 | break; | |
252b5132 | 6138 | |
7403cb63 MM |
6139 | default: |
6140 | abort (); | |
6141 | break; | |
6142 | } | |
6143 | } | |
252b5132 | 6144 | |
7403cb63 | 6145 | /* Relocate a MIPS ELF section. */ |
252b5132 | 6146 | |
103186c6 MM |
6147 | boolean |
6148 | _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
6149 | contents, relocs, local_syms, local_sections) | |
7403cb63 MM |
6150 | bfd *output_bfd; |
6151 | struct bfd_link_info *info; | |
6152 | bfd *input_bfd; | |
6153 | asection *input_section; | |
6154 | bfd_byte *contents; | |
6155 | Elf_Internal_Rela *relocs; | |
6156 | Elf_Internal_Sym *local_syms; | |
6157 | asection **local_sections; | |
6158 | { | |
103186c6 MM |
6159 | const Elf_Internal_Rela *rel; |
6160 | const Elf_Internal_Rela *relend; | |
7403cb63 MM |
6161 | bfd_vma addend; |
6162 | bfd_vma last_hi16_addend; | |
7403cb63 MM |
6163 | boolean use_saved_addend_p = false; |
6164 | boolean last_hi16_addend_valid_p = false; | |
103186c6 | 6165 | struct elf_backend_data *bed; |
252b5132 | 6166 | |
103186c6 MM |
6167 | bed = get_elf_backend_data (output_bfd); |
6168 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
7403cb63 MM |
6169 | for (rel = relocs; rel < relend; ++rel) |
6170 | { | |
6171 | const char *name; | |
6172 | bfd_vma value; | |
7403cb63 | 6173 | reloc_howto_type *howto; |
252b5132 | 6174 | |
7403cb63 | 6175 | /* Find the relocation howto for this relocation. */ |
a3c7651d MM |
6176 | if (ELF32_R_TYPE (rel->r_info) == R_MIPS_64 |
6177 | && !ABI_64_P (output_bfd)) | |
6178 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
6179 | 64-bit code, but make sure all their addresses are in the | |
6180 | lowermost or uppermost 32-bit section of the 64-bit address | |
6181 | space. Thus, when they use an R_MIPS_64 they mean what is | |
6182 | usually meant by R_MIPS_32, with the exception that the | |
6183 | stored value is sign-extended to 64 bits. */ | |
6184 | howto = elf_mips_howto_table + R_MIPS_32; | |
6185 | else | |
6186 | howto = elf_mips_howto_table + ELF32_R_TYPE (rel->r_info); | |
252b5132 | 6187 | |
7403cb63 MM |
6188 | if (!use_saved_addend_p) |
6189 | { | |
6190 | Elf_Internal_Shdr *rel_hdr; | |
6191 | ||
6192 | /* If these relocations were originally of the REL variety, | |
6193 | we must pull the addend out of the field that will be | |
6194 | relocated. Otherwise, we simply use the contents of the | |
6195 | RELA relocation. To determine which flavor or relocation | |
6196 | this is, we depend on the fact that the INPUT_SECTION's | |
6197 | REL_HDR is read before its REL_HDR2. */ | |
6198 | rel_hdr = &elf_section_data (input_section)->rel_hdr; | |
5f771d47 | 6199 | if ((size_t) (rel - relocs) |
103186c6 MM |
6200 | >= (rel_hdr->sh_size / rel_hdr->sh_entsize |
6201 | * bed->s->int_rels_per_ext_rel)) | |
7403cb63 | 6202 | rel_hdr = elf_section_data (input_section)->rel_hdr2; |
103186c6 | 6203 | if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd)) |
7403cb63 MM |
6204 | { |
6205 | int r_type = ELF32_R_TYPE (rel->r_info); | |
6206 | ||
6207 | addend = mips_elf_obtain_contents (howto, | |
6208 | rel, | |
6209 | input_bfd, | |
6210 | contents); | |
6211 | addend &= howto->src_mask; | |
6212 | ||
6213 | /* For some kinds of relocations, the ADDEND is a | |
6214 | combination of the addend stored in two different | |
6215 | relocations. */ | |
6216 | if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16) | |
252b5132 | 6217 | { |
7403cb63 MM |
6218 | /* Scan ahead to find a matching R_MIPS_LO16 |
6219 | relocation. */ | |
6220 | bfd_vma l; | |
6221 | ||
6222 | if (!mips_elf_next_lo16_addend (rel, relend, &l)) | |
6223 | return false; | |
252b5132 | 6224 | |
7403cb63 MM |
6225 | /* Save the high-order bit for later. When we |
6226 | encounter the R_MIPS_LO16 relocation we will need | |
6227 | them again. */ | |
6228 | addend <<= 16; | |
6229 | last_hi16_addend = addend; | |
6230 | last_hi16_addend_valid_p = true; | |
252b5132 | 6231 | |
7403cb63 MM |
6232 | /* Compute the combined addend. */ |
6233 | addend |= l; | |
252b5132 | 6234 | } |
7403cb63 | 6235 | else if (r_type == R_MIPS_LO16) |
252b5132 | 6236 | { |
7403cb63 MM |
6237 | /* Used the saved HI16 addend. */ |
6238 | if (!last_hi16_addend_valid_p) | |
6239 | return false; | |
6240 | addend |= last_hi16_addend; | |
252b5132 RH |
6241 | } |
6242 | } | |
6243 | else | |
7403cb63 MM |
6244 | addend = rel->r_addend; |
6245 | } | |
252b5132 | 6246 | |
7403cb63 MM |
6247 | /* In the N32 and 64-bit ABIs there may be multiple consecutive |
6248 | relocations for the same offset. In that case we are | |
6249 | supposed to treat the output of each relocation as the addend | |
6250 | for the next. */ | |
103186c6 MM |
6251 | if (rel + 1 < relend |
6252 | && rel->r_offset == rel[1].r_offset | |
6253 | && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE) | |
7403cb63 MM |
6254 | use_saved_addend_p = true; |
6255 | else | |
6256 | use_saved_addend_p = false; | |
6257 | ||
6258 | /* Figure out what value we are supposed to relocate. */ | |
6259 | switch (mips_elf_calculate_relocation (output_bfd, | |
6260 | input_bfd, | |
6261 | input_section, | |
6262 | info, | |
6263 | rel, | |
6264 | addend, | |
6265 | howto, | |
7403cb63 MM |
6266 | local_syms, |
6267 | local_sections, | |
6268 | &value, | |
6269 | &name)) | |
6270 | { | |
6271 | case bfd_reloc_continue: | |
6272 | /* There's nothing to do. */ | |
6273 | continue; | |
252b5132 | 6274 | |
7403cb63 MM |
6275 | case bfd_reloc_undefined: |
6276 | return false; | |
252b5132 | 6277 | |
7403cb63 MM |
6278 | case bfd_reloc_notsupported: |
6279 | abort (); | |
6280 | break; | |
252b5132 | 6281 | |
7403cb63 MM |
6282 | case bfd_reloc_overflow: |
6283 | if (use_saved_addend_p) | |
6284 | /* Ignore overflow until we reach the last relocation for | |
6285 | a given location. */ | |
6286 | ; | |
6287 | else if (!name | |
6288 | || ! ((*info->callbacks->reloc_overflow) | |
6289 | (info, name, howto->name, (bfd_vma) 0, | |
6290 | input_bfd, input_section, rel->r_offset))) | |
6291 | return false; | |
6292 | ||
6293 | break; | |
252b5132 | 6294 | |
7403cb63 MM |
6295 | case bfd_reloc_ok: |
6296 | break; | |
6297 | ||
6298 | default: | |
6299 | abort (); | |
6300 | break; | |
252b5132 RH |
6301 | } |
6302 | ||
7403cb63 MM |
6303 | /* If we've got another relocation for the address, keep going |
6304 | until we reach the last one. */ | |
6305 | if (use_saved_addend_p) | |
252b5132 | 6306 | { |
7403cb63 MM |
6307 | addend = value; |
6308 | continue; | |
252b5132 | 6309 | } |
7403cb63 | 6310 | |
a3c7651d MM |
6311 | if (ELF32_R_TYPE (rel->r_info) == R_MIPS_64 |
6312 | && !ABI_64_P (output_bfd)) | |
6313 | /* See the comment above about using R_MIPS_64 in the 32-bit | |
6314 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
6315 | that calculated the right value. Now, however, we | |
6316 | sign-extend the 32-bit result to 64-bits, and store it as a | |
6317 | 64-bit value. We are especially generous here in that we | |
6318 | go to extreme lengths to support this usage on systems with | |
6319 | only a 32-bit VMA. */ | |
6320 | { | |
6321 | #ifdef BFD64 | |
6322 | /* Just sign-extend the value, and then fall through to the | |
6323 | normal case, using the R_MIPS_64 howto. That will store | |
6324 | the 64-bit value into a 64-bit area. */ | |
6325 | value = mips_elf_sign_extend (value, 64); | |
6326 | howto = elf_mips_howto_table + R_MIPS_64; | |
6327 | #else /* !BFD64 */ | |
6328 | /* In the 32-bit VMA case, we must handle sign-extension and | |
6329 | endianness manually. */ | |
6330 | bfd_vma sign_bits; | |
6331 | bfd_vma low_bits; | |
6332 | bfd_vma high_bits; | |
6333 | ||
6334 | if (value & 0x80000000) | |
6335 | sign_bits = 0xffffffff; | |
6336 | else | |
6337 | sign_bits = 0; | |
6338 | ||
6339 | /* If only a 32-bit VMA is available do two separate | |
6340 | stores. */ | |
6341 | if (bfd_big_endian (input_bfd)) | |
6342 | { | |
6343 | /* Store the sign-bits (which are most significant) | |
6344 | first. */ | |
6345 | low_bits = sign_bits; | |
6346 | high_bits = value; | |
6347 | } | |
6348 | else | |
6349 | { | |
6350 | low_bits = value; | |
6351 | high_bits = sign_bits; | |
6352 | } | |
6353 | bfd_put_32 (input_bfd, low_bits, | |
6354 | contents + rel->r_offset); | |
6355 | bfd_put_32 (input_bfd, high_bits, | |
6356 | contents + rel->r_offset + 4); | |
6357 | continue; | |
6358 | #endif /* !BFD64 */ | |
6359 | } | |
6360 | ||
7403cb63 MM |
6361 | /* Actually perform the relocation. */ |
6362 | mips_elf_perform_relocation (howto, rel, value, input_bfd, | |
6363 | contents); | |
252b5132 RH |
6364 | } |
6365 | ||
6366 | return true; | |
6367 | } | |
6368 | ||
6369 | /* This hook function is called before the linker writes out a global | |
6370 | symbol. We mark symbols as small common if appropriate. This is | |
6371 | also where we undo the increment of the value for a mips16 symbol. */ | |
6372 | ||
6373 | /*ARGSIGNORED*/ | |
103186c6 MM |
6374 | boolean |
6375 | _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
5f771d47 ILT |
6376 | bfd *abfd ATTRIBUTE_UNUSED; |
6377 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
6378 | const char *name ATTRIBUTE_UNUSED; | |
252b5132 RH |
6379 | Elf_Internal_Sym *sym; |
6380 | asection *input_sec; | |
6381 | { | |
6382 | /* If we see a common symbol, which implies a relocatable link, then | |
6383 | if a symbol was small common in an input file, mark it as small | |
6384 | common in the output file. */ | |
6385 | if (sym->st_shndx == SHN_COMMON | |
6386 | && strcmp (input_sec->name, ".scommon") == 0) | |
6387 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
6388 | ||
6389 | if (sym->st_other == STO_MIPS16 | |
6390 | && (sym->st_value & 1) != 0) | |
6391 | --sym->st_value; | |
6392 | ||
6393 | return true; | |
6394 | } | |
6395 | \f | |
6396 | /* Functions for the dynamic linker. */ | |
6397 | ||
6398 | /* The name of the dynamic interpreter. This is put in the .interp | |
6399 | section. */ | |
6400 | ||
103186c6 MM |
6401 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ |
6402 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
6403 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
6404 | : "/usr/lib/libc.so.1") | |
252b5132 RH |
6405 | |
6406 | /* Create dynamic sections when linking against a dynamic object. */ | |
6407 | ||
103186c6 MM |
6408 | boolean |
6409 | _bfd_mips_elf_create_dynamic_sections (abfd, info) | |
252b5132 RH |
6410 | bfd *abfd; |
6411 | struct bfd_link_info *info; | |
6412 | { | |
6413 | struct elf_link_hash_entry *h; | |
6414 | flagword flags; | |
6415 | register asection *s; | |
6416 | const char * const *namep; | |
6417 | ||
6418 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
6419 | | SEC_LINKER_CREATED | SEC_READONLY); | |
6420 | ||
6421 | /* Mips ABI requests the .dynamic section to be read only. */ | |
6422 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
6423 | if (s != NULL) | |
6424 | { | |
6425 | if (! bfd_set_section_flags (abfd, s, flags)) | |
6426 | return false; | |
6427 | } | |
6428 | ||
6429 | /* We need to create .got section. */ | |
6430 | if (! mips_elf_create_got_section (abfd, info)) | |
6431 | return false; | |
6432 | ||
c6142e5d MM |
6433 | /* Create the .msym section on IRIX6. It is used by the dynamic |
6434 | linker to speed up dynamic relocations, and to avoid computing | |
6435 | the ELF hash for symbols. */ | |
6436 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
6437 | && !mips_elf_create_msym_section (abfd)) | |
6438 | return false; | |
6439 | ||
252b5132 | 6440 | /* Create .stub section. */ |
7403cb63 MM |
6441 | if (bfd_get_section_by_name (abfd, |
6442 | MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL) | |
252b5132 | 6443 | { |
7403cb63 | 6444 | s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd)); |
252b5132 | 6445 | if (s == NULL |
7403cb63 | 6446 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) |
103186c6 MM |
6447 | || ! bfd_set_section_alignment (abfd, s, |
6448 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
252b5132 RH |
6449 | return false; |
6450 | } | |
6451 | ||
7403cb63 | 6452 | if (IRIX_COMPAT (abfd) == ict_irix5 |
252b5132 RH |
6453 | && !info->shared |
6454 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
6455 | { | |
6456 | s = bfd_make_section (abfd, ".rld_map"); | |
6457 | if (s == NULL | |
6458 | || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY) | |
103186c6 MM |
6459 | || ! bfd_set_section_alignment (abfd, s, |
6460 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
252b5132 RH |
6461 | return false; |
6462 | } | |
6463 | ||
303f629d MM |
6464 | /* On IRIX5, we adjust add some additional symbols and change the |
6465 | alignments of several sections. There is no ABI documentation | |
6466 | indicating that this is necessary on IRIX6, nor any evidence that | |
6467 | the linker takes such action. */ | |
6468 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
252b5132 RH |
6469 | { |
6470 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
6471 | { | |
6472 | h = NULL; | |
6473 | if (! (_bfd_generic_link_add_one_symbol | |
6474 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, | |
6475 | (bfd_vma) 0, (const char *) NULL, false, | |
6476 | get_elf_backend_data (abfd)->collect, | |
6477 | (struct bfd_link_hash_entry **) &h))) | |
6478 | return false; | |
6479 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
6480 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
6481 | h->type = STT_SECTION; | |
6482 | ||
6483 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6484 | return false; | |
6485 | } | |
6486 | ||
6487 | /* We need to create a .compact_rel section. */ | |
6488 | if (! mips_elf_create_compact_rel_section (abfd, info)) | |
6489 | return false; | |
6490 | ||
6491 | /* Change aligments of some sections. */ | |
6492 | s = bfd_get_section_by_name (abfd, ".hash"); | |
6493 | if (s != NULL) | |
6494 | bfd_set_section_alignment (abfd, s, 4); | |
6495 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
6496 | if (s != NULL) | |
6497 | bfd_set_section_alignment (abfd, s, 4); | |
6498 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
6499 | if (s != NULL) | |
6500 | bfd_set_section_alignment (abfd, s, 4); | |
6501 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
6502 | if (s != NULL) | |
6503 | bfd_set_section_alignment (abfd, s, 4); | |
6504 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
6505 | if (s != NULL) | |
6506 | bfd_set_section_alignment (abfd, s, 4); | |
6507 | } | |
6508 | ||
6509 | if (!info->shared) | |
6510 | { | |
6511 | h = NULL; | |
6512 | if (! (_bfd_generic_link_add_one_symbol | |
6513 | (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr, | |
6514 | (bfd_vma) 0, (const char *) NULL, false, | |
6515 | get_elf_backend_data (abfd)->collect, | |
6516 | (struct bfd_link_hash_entry **) &h))) | |
6517 | return false; | |
6518 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
6519 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
6520 | h->type = STT_SECTION; | |
6521 | ||
6522 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6523 | return false; | |
6524 | ||
6525 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
6526 | { | |
6527 | /* __rld_map is a four byte word located in the .data section | |
6528 | and is filled in by the rtld to contain a pointer to | |
6529 | the _r_debug structure. Its symbol value will be set in | |
6530 | mips_elf_finish_dynamic_symbol. */ | |
6531 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
6532 | BFD_ASSERT (s != NULL); | |
6533 | ||
6534 | h = NULL; | |
6535 | if (! (_bfd_generic_link_add_one_symbol | |
6536 | (info, abfd, "__rld_map", BSF_GLOBAL, s, | |
6537 | (bfd_vma) 0, (const char *) NULL, false, | |
6538 | get_elf_backend_data (abfd)->collect, | |
6539 | (struct bfd_link_hash_entry **) &h))) | |
6540 | return false; | |
6541 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
6542 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
6543 | h->type = STT_OBJECT; | |
6544 | ||
6545 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6546 | return false; | |
6547 | } | |
6548 | } | |
6549 | ||
6550 | return true; | |
6551 | } | |
6552 | ||
6553 | /* Create the .compact_rel section. */ | |
6554 | ||
6555 | static boolean | |
6556 | mips_elf_create_compact_rel_section (abfd, info) | |
6557 | bfd *abfd; | |
5f771d47 | 6558 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
6559 | { |
6560 | flagword flags; | |
6561 | register asection *s; | |
6562 | ||
6563 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
6564 | { | |
6565 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
6566 | | SEC_READONLY); | |
6567 | ||
6568 | s = bfd_make_section (abfd, ".compact_rel"); | |
6569 | if (s == NULL | |
6570 | || ! bfd_set_section_flags (abfd, s, flags) | |
103186c6 MM |
6571 | || ! bfd_set_section_alignment (abfd, s, |
6572 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
252b5132 RH |
6573 | return false; |
6574 | ||
6575 | s->_raw_size = sizeof (Elf32_External_compact_rel); | |
6576 | } | |
6577 | ||
6578 | return true; | |
6579 | } | |
6580 | ||
6581 | /* Create the .got section to hold the global offset table. */ | |
6582 | ||
6583 | static boolean | |
6584 | mips_elf_create_got_section (abfd, info) | |
6585 | bfd *abfd; | |
6586 | struct bfd_link_info *info; | |
6587 | { | |
6588 | flagword flags; | |
6589 | register asection *s; | |
6590 | struct elf_link_hash_entry *h; | |
6591 | struct mips_got_info *g; | |
6592 | ||
6593 | /* This function may be called more than once. */ | |
103186c6 | 6594 | if (mips_elf_got_section (abfd)) |
252b5132 RH |
6595 | return true; |
6596 | ||
6597 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
6598 | | SEC_LINKER_CREATED); | |
6599 | ||
6600 | s = bfd_make_section (abfd, ".got"); | |
6601 | if (s == NULL | |
6602 | || ! bfd_set_section_flags (abfd, s, flags) | |
6603 | || ! bfd_set_section_alignment (abfd, s, 4)) | |
6604 | return false; | |
6605 | ||
6606 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
6607 | linker script because we don't want to define the symbol if we | |
6608 | are not creating a global offset table. */ | |
6609 | h = NULL; | |
6610 | if (! (_bfd_generic_link_add_one_symbol | |
6611 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
6612 | (bfd_vma) 0, (const char *) NULL, false, | |
6613 | get_elf_backend_data (abfd)->collect, | |
6614 | (struct bfd_link_hash_entry **) &h))) | |
6615 | return false; | |
6616 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
6617 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
6618 | h->type = STT_OBJECT; | |
6619 | ||
6620 | if (info->shared | |
6621 | && ! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6622 | return false; | |
6623 | ||
6624 | /* The first several global offset table entries are reserved. */ | |
103186c6 | 6625 | s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd); |
252b5132 RH |
6626 | |
6627 | g = (struct mips_got_info *) bfd_alloc (abfd, | |
6628 | sizeof (struct mips_got_info)); | |
6629 | if (g == NULL) | |
6630 | return false; | |
7403cb63 | 6631 | g->global_gotsym = NULL; |
252b5132 RH |
6632 | g->local_gotno = MIPS_RESERVED_GOTNO; |
6633 | g->assigned_gotno = MIPS_RESERVED_GOTNO; | |
6634 | if (elf_section_data (s) == NULL) | |
6635 | { | |
6636 | s->used_by_bfd = | |
6637 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
6638 | if (elf_section_data (s) == NULL) | |
6639 | return false; | |
6640 | } | |
6641 | elf_section_data (s)->tdata = (PTR) g; | |
7403cb63 MM |
6642 | elf_section_data (s)->this_hdr.sh_flags |
6643 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
252b5132 RH |
6644 | |
6645 | return true; | |
6646 | } | |
6647 | ||
c6142e5d MM |
6648 | /* Returns the .msym section for ABFD, creating it if it does not |
6649 | already exist. Returns NULL to indicate error. */ | |
6650 | ||
6651 | static asection * | |
6652 | mips_elf_create_msym_section (abfd) | |
6653 | bfd *abfd; | |
6654 | { | |
6655 | asection *s; | |
6656 | ||
6657 | s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd)); | |
6658 | if (!s) | |
6659 | { | |
6660 | s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd)); | |
6661 | if (!s | |
6662 | || !bfd_set_section_flags (abfd, s, | |
6663 | SEC_ALLOC | |
6664 | | SEC_LOAD | |
6665 | | SEC_HAS_CONTENTS | |
6666 | | SEC_LINKER_CREATED | |
6667 | | SEC_READONLY) | |
103186c6 MM |
6668 | || !bfd_set_section_alignment (abfd, s, |
6669 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
c6142e5d MM |
6670 | return NULL; |
6671 | } | |
6672 | ||
6673 | return s; | |
6674 | } | |
6675 | ||
103186c6 MM |
6676 | /* Add room for N relocations to the .rel.dyn section in ABFD. */ |
6677 | ||
6678 | static void | |
6679 | mips_elf_allocate_dynamic_relocations (abfd, n) | |
6680 | bfd *abfd; | |
6681 | unsigned int n; | |
6682 | { | |
6683 | asection *s; | |
6684 | ||
6685 | s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd)); | |
6686 | BFD_ASSERT (s != NULL); | |
6687 | ||
6688 | if (s->_raw_size == 0) | |
6689 | { | |
6690 | /* Make room for a null element. */ | |
6691 | s->_raw_size += MIPS_ELF_REL_SIZE (abfd); | |
6692 | ++s->reloc_count; | |
6693 | } | |
6694 | s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd); | |
6695 | } | |
6696 | ||
252b5132 RH |
6697 | /* Look through the relocs for a section during the first phase, and |
6698 | allocate space in the global offset table. */ | |
6699 | ||
103186c6 MM |
6700 | boolean |
6701 | _bfd_mips_elf_check_relocs (abfd, info, sec, relocs) | |
252b5132 RH |
6702 | bfd *abfd; |
6703 | struct bfd_link_info *info; | |
6704 | asection *sec; | |
6705 | const Elf_Internal_Rela *relocs; | |
6706 | { | |
6707 | const char *name; | |
6708 | bfd *dynobj; | |
6709 | Elf_Internal_Shdr *symtab_hdr; | |
6710 | struct elf_link_hash_entry **sym_hashes; | |
6711 | struct mips_got_info *g; | |
6712 | size_t extsymoff; | |
6713 | const Elf_Internal_Rela *rel; | |
6714 | const Elf_Internal_Rela *rel_end; | |
6715 | asection *sgot; | |
6716 | asection *sreloc; | |
103186c6 | 6717 | struct elf_backend_data *bed; |
252b5132 RH |
6718 | |
6719 | if (info->relocateable) | |
6720 | return true; | |
6721 | ||
6722 | dynobj = elf_hash_table (info)->dynobj; | |
6723 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6724 | sym_hashes = elf_sym_hashes (abfd); | |
6725 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
6726 | ||
6727 | /* Check for the mips16 stub sections. */ | |
6728 | ||
6729 | name = bfd_get_section_name (abfd, sec); | |
6730 | if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) | |
6731 | { | |
6732 | unsigned long r_symndx; | |
6733 | ||
6734 | /* Look at the relocation information to figure out which symbol | |
6735 | this is for. */ | |
6736 | ||
6737 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
6738 | ||
6739 | if (r_symndx < extsymoff | |
6740 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
6741 | { | |
6742 | asection *o; | |
6743 | ||
6744 | /* This stub is for a local symbol. This stub will only be | |
6745 | needed if there is some relocation in this BFD, other | |
6746 | than a 16 bit function call, which refers to this symbol. */ | |
6747 | for (o = abfd->sections; o != NULL; o = o->next) | |
6748 | { | |
6749 | Elf_Internal_Rela *sec_relocs; | |
6750 | const Elf_Internal_Rela *r, *rend; | |
6751 | ||
6752 | /* We can ignore stub sections when looking for relocs. */ | |
6753 | if ((o->flags & SEC_RELOC) == 0 | |
6754 | || o->reloc_count == 0 | |
6755 | || strncmp (bfd_get_section_name (abfd, o), FN_STUB, | |
6756 | sizeof FN_STUB - 1) == 0 | |
6757 | || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, | |
6758 | sizeof CALL_STUB - 1) == 0 | |
6759 | || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, | |
6760 | sizeof CALL_FP_STUB - 1) == 0) | |
6761 | continue; | |
6762 | ||
6763 | sec_relocs = (_bfd_elf32_link_read_relocs | |
6764 | (abfd, o, (PTR) NULL, | |
6765 | (Elf_Internal_Rela *) NULL, | |
6766 | info->keep_memory)); | |
6767 | if (sec_relocs == NULL) | |
6768 | return false; | |
6769 | ||
6770 | rend = sec_relocs + o->reloc_count; | |
6771 | for (r = sec_relocs; r < rend; r++) | |
6772 | if (ELF32_R_SYM (r->r_info) == r_symndx | |
6773 | && ELF32_R_TYPE (r->r_info) != R_MIPS16_26) | |
6774 | break; | |
6775 | ||
6776 | if (! info->keep_memory) | |
6777 | free (sec_relocs); | |
6778 | ||
6779 | if (r < rend) | |
6780 | break; | |
6781 | } | |
6782 | ||
6783 | if (o == NULL) | |
6784 | { | |
6785 | /* There is no non-call reloc for this stub, so we do | |
6786 | not need it. Since this function is called before | |
6787 | the linker maps input sections to output sections, we | |
6788 | can easily discard it by setting the SEC_EXCLUDE | |
6789 | flag. */ | |
6790 | sec->flags |= SEC_EXCLUDE; | |
6791 | return true; | |
6792 | } | |
6793 | ||
6794 | /* Record this stub in an array of local symbol stubs for | |
6795 | this BFD. */ | |
6796 | if (elf_tdata (abfd)->local_stubs == NULL) | |
6797 | { | |
6798 | unsigned long symcount; | |
6799 | asection **n; | |
6800 | ||
6801 | if (elf_bad_symtab (abfd)) | |
103186c6 | 6802 | symcount = symtab_hdr->sh_size / symtab_hdr->sh_entsize; |
252b5132 RH |
6803 | else |
6804 | symcount = symtab_hdr->sh_info; | |
6805 | n = (asection **) bfd_zalloc (abfd, | |
6806 | symcount * sizeof (asection *)); | |
6807 | if (n == NULL) | |
6808 | return false; | |
6809 | elf_tdata (abfd)->local_stubs = n; | |
6810 | } | |
6811 | ||
6812 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; | |
6813 | ||
6814 | /* We don't need to set mips16_stubs_seen in this case. | |
6815 | That flag is used to see whether we need to look through | |
6816 | the global symbol table for stubs. We don't need to set | |
6817 | it here, because we just have a local stub. */ | |
6818 | } | |
6819 | else | |
6820 | { | |
6821 | struct mips_elf_link_hash_entry *h; | |
6822 | ||
6823 | h = ((struct mips_elf_link_hash_entry *) | |
6824 | sym_hashes[r_symndx - extsymoff]); | |
6825 | ||
6826 | /* H is the symbol this stub is for. */ | |
6827 | ||
6828 | h->fn_stub = sec; | |
6829 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
6830 | } | |
6831 | } | |
6832 | else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
6833 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
6834 | { | |
6835 | unsigned long r_symndx; | |
6836 | struct mips_elf_link_hash_entry *h; | |
6837 | asection **loc; | |
6838 | ||
6839 | /* Look at the relocation information to figure out which symbol | |
6840 | this is for. */ | |
6841 | ||
6842 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
6843 | ||
6844 | if (r_symndx < extsymoff | |
6845 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
6846 | { | |
6847 | /* This stub was actually built for a static symbol defined | |
6848 | in the same file. We assume that all static symbols in | |
6849 | mips16 code are themselves mips16, so we can simply | |
6850 | discard this stub. Since this function is called before | |
6851 | the linker maps input sections to output sections, we can | |
6852 | easily discard it by setting the SEC_EXCLUDE flag. */ | |
6853 | sec->flags |= SEC_EXCLUDE; | |
6854 | return true; | |
6855 | } | |
6856 | ||
6857 | h = ((struct mips_elf_link_hash_entry *) | |
6858 | sym_hashes[r_symndx - extsymoff]); | |
6859 | ||
6860 | /* H is the symbol this stub is for. */ | |
6861 | ||
6862 | if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
6863 | loc = &h->call_fp_stub; | |
6864 | else | |
6865 | loc = &h->call_stub; | |
6866 | ||
6867 | /* If we already have an appropriate stub for this function, we | |
6868 | don't need another one, so we can discard this one. Since | |
6869 | this function is called before the linker maps input sections | |
6870 | to output sections, we can easily discard it by setting the | |
6871 | SEC_EXCLUDE flag. We can also discard this section if we | |
6872 | happen to already know that this is a mips16 function; it is | |
6873 | not necessary to check this here, as it is checked later, but | |
6874 | it is slightly faster to check now. */ | |
6875 | if (*loc != NULL || h->root.other == STO_MIPS16) | |
6876 | { | |
6877 | sec->flags |= SEC_EXCLUDE; | |
6878 | return true; | |
6879 | } | |
6880 | ||
6881 | *loc = sec; | |
6882 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
6883 | } | |
6884 | ||
6885 | if (dynobj == NULL) | |
6886 | { | |
6887 | sgot = NULL; | |
6888 | g = NULL; | |
6889 | } | |
6890 | else | |
6891 | { | |
103186c6 | 6892 | sgot = mips_elf_got_section (dynobj); |
252b5132 RH |
6893 | if (sgot == NULL) |
6894 | g = NULL; | |
6895 | else | |
6896 | { | |
6897 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6898 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6899 | BFD_ASSERT (g != NULL); | |
6900 | } | |
6901 | } | |
6902 | ||
6903 | sreloc = NULL; | |
103186c6 MM |
6904 | bed = get_elf_backend_data (abfd); |
6905 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
6906 | for (rel = relocs; rel < rel_end; ++rel) | |
252b5132 RH |
6907 | { |
6908 | unsigned long r_symndx; | |
7403cb63 | 6909 | int r_type; |
252b5132 RH |
6910 | struct elf_link_hash_entry *h; |
6911 | ||
6912 | r_symndx = ELF32_R_SYM (rel->r_info); | |
7403cb63 | 6913 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 RH |
6914 | |
6915 | if (r_symndx < extsymoff) | |
6916 | h = NULL; | |
6917 | else | |
6918 | { | |
6919 | h = sym_hashes[r_symndx - extsymoff]; | |
6920 | ||
6921 | /* This may be an indirect symbol created because of a version. */ | |
6922 | if (h != NULL) | |
6923 | { | |
6924 | while (h->root.type == bfd_link_hash_indirect) | |
6925 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6926 | } | |
6927 | } | |
6928 | ||
6929 | /* Some relocs require a global offset table. */ | |
6930 | if (dynobj == NULL || sgot == NULL) | |
6931 | { | |
7403cb63 | 6932 | switch (r_type) |
252b5132 RH |
6933 | { |
6934 | case R_MIPS_GOT16: | |
6935 | case R_MIPS_CALL16: | |
6936 | case R_MIPS_CALL_HI16: | |
6937 | case R_MIPS_CALL_LO16: | |
6938 | case R_MIPS_GOT_HI16: | |
6939 | case R_MIPS_GOT_LO16: | |
6940 | if (dynobj == NULL) | |
6941 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
6942 | if (! mips_elf_create_got_section (dynobj, info)) | |
6943 | return false; | |
7403cb63 | 6944 | g = mips_elf_got_info (dynobj, &sgot); |
252b5132 RH |
6945 | break; |
6946 | ||
6947 | case R_MIPS_32: | |
6948 | case R_MIPS_REL32: | |
a3c7651d | 6949 | case R_MIPS_64: |
252b5132 RH |
6950 | if (dynobj == NULL |
6951 | && (info->shared || h != NULL) | |
6952 | && (sec->flags & SEC_ALLOC) != 0) | |
6953 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
6954 | break; | |
6955 | ||
6956 | default: | |
6957 | break; | |
6958 | } | |
6959 | } | |
6960 | ||
7403cb63 MM |
6961 | if (!h && (r_type == R_MIPS_CALL_LO16 |
6962 | || r_type == R_MIPS_GOT_LO16 | |
6963 | || r_type == R_MIPS_GOT_DISP)) | |
252b5132 | 6964 | { |
7403cb63 MM |
6965 | /* We may need a local GOT entry for this relocation. We |
6966 | don't count R_MIPS_HI16 or R_MIPS_GOT16 relocations | |
6967 | because they are always followed by a R_MIPS_LO16 | |
6968 | relocation for the value. We don't R_MIPS_GOT_PAGE | |
6969 | because we can estimate the maximum number of pages | |
6970 | needed by looking at the size of the segment. | |
6971 | ||
6972 | This estimation is very conservative since we can merge | |
6973 | duplicate entries in the GOT. In order to be less | |
6974 | conservative, we could actually build the GOT here, | |
6975 | rather than in relocate_section. */ | |
6976 | g->local_gotno++; | |
a3c7651d | 6977 | sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj); |
7403cb63 | 6978 | } |
252b5132 | 6979 | |
7403cb63 MM |
6980 | switch (r_type) |
6981 | { | |
6982 | case R_MIPS_CALL16: | |
252b5132 RH |
6983 | if (h == NULL) |
6984 | { | |
6985 | (*_bfd_error_handler) | |
6986 | (_("%s: CALL16 reloc at 0x%lx not against global symbol"), | |
6987 | bfd_get_filename (abfd), (unsigned long) rel->r_offset); | |
6988 | bfd_set_error (bfd_error_bad_value); | |
6989 | return false; | |
6990 | } | |
7403cb63 | 6991 | /* Fall through. */ |
252b5132 | 6992 | |
7403cb63 MM |
6993 | case R_MIPS_CALL_HI16: |
6994 | case R_MIPS_CALL_LO16: | |
6995 | /* This symbol requires a global offset table entry. */ | |
6996 | if (!mips_elf_record_global_got_symbol (h, info, g)) | |
6997 | return false; | |
252b5132 RH |
6998 | |
6999 | /* We need a stub, not a plt entry for the undefined | |
7000 | function. But we record it as if it needs plt. See | |
7001 | elf_adjust_dynamic_symbol in elflink.h. */ | |
7002 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
7003 | h->type = STT_FUNC; | |
7004 | ||
7005 | break; | |
7006 | ||
7007 | case R_MIPS_GOT16: | |
7008 | case R_MIPS_GOT_HI16: | |
7009 | case R_MIPS_GOT_LO16: | |
7403cb63 | 7010 | case R_MIPS_GOT_DISP: |
252b5132 | 7011 | /* This symbol requires a global offset table entry. */ |
7403cb63 MM |
7012 | if (h && !mips_elf_record_global_got_symbol (h, info, g)) |
7013 | return false; | |
252b5132 RH |
7014 | break; |
7015 | ||
7016 | case R_MIPS_32: | |
7017 | case R_MIPS_REL32: | |
a3c7651d | 7018 | case R_MIPS_64: |
252b5132 RH |
7019 | if ((info->shared || h != NULL) |
7020 | && (sec->flags & SEC_ALLOC) != 0) | |
7021 | { | |
7022 | if (sreloc == NULL) | |
7023 | { | |
103186c6 | 7024 | const char *name = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj); |
252b5132 RH |
7025 | |
7026 | sreloc = bfd_get_section_by_name (dynobj, name); | |
7027 | if (sreloc == NULL) | |
7028 | { | |
7029 | sreloc = bfd_make_section (dynobj, name); | |
7030 | if (sreloc == NULL | |
7031 | || ! bfd_set_section_flags (dynobj, sreloc, | |
7032 | (SEC_ALLOC | |
7033 | | SEC_LOAD | |
7034 | | SEC_HAS_CONTENTS | |
7035 | | SEC_IN_MEMORY | |
7036 | | SEC_LINKER_CREATED | |
7037 | | SEC_READONLY)) | |
7038 | || ! bfd_set_section_alignment (dynobj, sreloc, | |
7039 | 4)) | |
7040 | return false; | |
7041 | } | |
7042 | } | |
7043 | if (info->shared) | |
103186c6 MM |
7044 | /* When creating a shared object, we must copy these |
7045 | reloc types into the output file as R_MIPS_REL32 | |
7046 | relocs. We make room for this reloc in the | |
7047 | .rel.dyn reloc section. */ | |
7048 | mips_elf_allocate_dynamic_relocations (dynobj, 1); | |
252b5132 RH |
7049 | else |
7050 | { | |
7051 | struct mips_elf_link_hash_entry *hmips; | |
7052 | ||
7053 | /* We only need to copy this reloc if the symbol is | |
7054 | defined in a dynamic object. */ | |
7055 | hmips = (struct mips_elf_link_hash_entry *) h; | |
a3c7651d | 7056 | ++hmips->possibly_dynamic_relocs; |
252b5132 | 7057 | } |
7403cb63 MM |
7058 | |
7059 | /* Even though we don't directly need a GOT entry for | |
7060 | this symbol, a symbol must have a dynamic symbol | |
7061 | table index greater that DT_GOTSYM if there are | |
7062 | dynamic relocations against it. */ | |
7063 | if (!mips_elf_record_global_got_symbol (h, info, g)) | |
7064 | return false; | |
252b5132 RH |
7065 | } |
7066 | ||
103186c6 | 7067 | if (SGI_COMPAT (dynobj)) |
252b5132 RH |
7068 | mips_elf_hash_table (info)->compact_rel_size += |
7069 | sizeof (Elf32_External_crinfo); | |
252b5132 RH |
7070 | break; |
7071 | ||
7072 | case R_MIPS_26: | |
7073 | case R_MIPS_GPREL16: | |
7074 | case R_MIPS_LITERAL: | |
7075 | case R_MIPS_GPREL32: | |
103186c6 | 7076 | if (SGI_COMPAT (dynobj)) |
252b5132 RH |
7077 | mips_elf_hash_table (info)->compact_rel_size += |
7078 | sizeof (Elf32_External_crinfo); | |
7079 | break; | |
7080 | ||
7081 | /* This relocation describes the C++ object vtable hierarchy. | |
7082 | Reconstruct it for later use during GC. */ | |
7083 | case R_MIPS_GNU_VTINHERIT: | |
7084 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
7085 | return false; | |
7086 | break; | |
7087 | ||
7088 | /* This relocation describes which C++ vtable entries are actually | |
7089 | used. Record for later use during GC. */ | |
7090 | case R_MIPS_GNU_VTENTRY: | |
7091 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
7092 | return false; | |
7093 | break; | |
7094 | ||
7095 | default: | |
7096 | break; | |
7097 | } | |
7098 | ||
7099 | /* If this reloc is not a 16 bit call, and it has a global | |
7100 | symbol, then we will need the fn_stub if there is one. | |
7101 | References from a stub section do not count. */ | |
7102 | if (h != NULL | |
7403cb63 | 7103 | && r_type != R_MIPS16_26 |
252b5132 RH |
7104 | && strncmp (bfd_get_section_name (abfd, sec), FN_STUB, |
7105 | sizeof FN_STUB - 1) != 0 | |
7106 | && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB, | |
7107 | sizeof CALL_STUB - 1) != 0 | |
7108 | && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB, | |
7109 | sizeof CALL_FP_STUB - 1) != 0) | |
7110 | { | |
7111 | struct mips_elf_link_hash_entry *mh; | |
7112 | ||
7113 | mh = (struct mips_elf_link_hash_entry *) h; | |
7114 | mh->need_fn_stub = true; | |
7115 | } | |
7116 | } | |
7117 | ||
7118 | return true; | |
7119 | } | |
7120 | ||
7121 | /* Return the section that should be marked against GC for a given | |
7122 | relocation. */ | |
7123 | ||
103186c6 MM |
7124 | asection * |
7125 | _bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
252b5132 | 7126 | bfd *abfd; |
5f771d47 | 7127 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
7128 | Elf_Internal_Rela *rel; |
7129 | struct elf_link_hash_entry *h; | |
7130 | Elf_Internal_Sym *sym; | |
7131 | { | |
7132 | /* ??? Do mips16 stub sections need to be handled special? */ | |
7133 | ||
7134 | if (h != NULL) | |
7135 | { | |
7136 | switch (ELF32_R_TYPE (rel->r_info)) | |
7137 | { | |
7138 | case R_MIPS_GNU_VTINHERIT: | |
7139 | case R_MIPS_GNU_VTENTRY: | |
7140 | break; | |
7141 | ||
7142 | default: | |
7143 | switch (h->root.type) | |
7144 | { | |
7145 | case bfd_link_hash_defined: | |
7146 | case bfd_link_hash_defweak: | |
7147 | return h->root.u.def.section; | |
7148 | ||
7149 | case bfd_link_hash_common: | |
7150 | return h->root.u.c.p->section; | |
7151 | ||
7152 | default: | |
7153 | break; | |
7154 | } | |
7155 | } | |
7156 | } | |
7157 | else | |
7158 | { | |
7159 | if (!(elf_bad_symtab (abfd) | |
7160 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
7161 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
7162 | && sym->st_shndx != SHN_COMMON)) | |
7163 | { | |
7164 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
7165 | } | |
7166 | } | |
7167 | ||
7168 | return NULL; | |
7169 | } | |
7170 | ||
7171 | /* Update the got entry reference counts for the section being removed. */ | |
7172 | ||
103186c6 MM |
7173 | boolean |
7174 | _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
5f771d47 ILT |
7175 | bfd *abfd ATTRIBUTE_UNUSED; |
7176 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
7177 | asection *sec ATTRIBUTE_UNUSED; | |
7178 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
252b5132 RH |
7179 | { |
7180 | #if 0 | |
7181 | Elf_Internal_Shdr *symtab_hdr; | |
7182 | struct elf_link_hash_entry **sym_hashes; | |
7183 | bfd_signed_vma *local_got_refcounts; | |
7184 | const Elf_Internal_Rela *rel, *relend; | |
7185 | unsigned long r_symndx; | |
7186 | struct elf_link_hash_entry *h; | |
7187 | ||
7188 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7189 | sym_hashes = elf_sym_hashes (abfd); | |
7190 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
7191 | ||
7192 | relend = relocs + sec->reloc_count; | |
7193 | for (rel = relocs; rel < relend; rel++) | |
7194 | switch (ELF32_R_TYPE (rel->r_info)) | |
7195 | { | |
7196 | case R_MIPS_GOT16: | |
7197 | case R_MIPS_CALL16: | |
7198 | case R_MIPS_CALL_HI16: | |
7199 | case R_MIPS_CALL_LO16: | |
7200 | case R_MIPS_GOT_HI16: | |
7201 | case R_MIPS_GOT_LO16: | |
7202 | /* ??? It would seem that the existing MIPS code does no sort | |
7203 | of reference counting or whatnot on its GOT and PLT entries, | |
7204 | so it is not possible to garbage collect them at this time. */ | |
7205 | break; | |
7206 | ||
7207 | default: | |
7208 | break; | |
7209 | } | |
7210 | #endif | |
7211 | ||
7212 | return true; | |
7213 | } | |
7214 | ||
7215 | ||
7216 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
7217 | regular object. The current definition is in some section of the | |
7218 | dynamic object, but we're not including those sections. We have to | |
7219 | change the definition to something the rest of the link can | |
7220 | understand. */ | |
7221 | ||
103186c6 MM |
7222 | boolean |
7223 | _bfd_mips_elf_adjust_dynamic_symbol (info, h) | |
252b5132 RH |
7224 | struct bfd_link_info *info; |
7225 | struct elf_link_hash_entry *h; | |
7226 | { | |
7227 | bfd *dynobj; | |
7228 | struct mips_elf_link_hash_entry *hmips; | |
7229 | asection *s; | |
7230 | ||
7231 | dynobj = elf_hash_table (info)->dynobj; | |
7232 | ||
7233 | /* Make sure we know what is going on here. */ | |
7234 | BFD_ASSERT (dynobj != NULL | |
7235 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
7236 | || h->weakdef != NULL | |
7237 | || ((h->elf_link_hash_flags | |
7238 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
7239 | && (h->elf_link_hash_flags | |
7240 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
7241 | && (h->elf_link_hash_flags | |
7242 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
7243 | ||
7244 | /* If this symbol is defined in a dynamic object, we need to copy | |
7245 | any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output | |
7246 | file. */ | |
7247 | hmips = (struct mips_elf_link_hash_entry *) h; | |
7248 | if (! info->relocateable | |
a3c7651d | 7249 | && hmips->possibly_dynamic_relocs != 0 |
252b5132 | 7250 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
a3c7651d MM |
7251 | mips_elf_allocate_dynamic_relocations (dynobj, |
7252 | hmips->possibly_dynamic_relocs); | |
252b5132 RH |
7253 | |
7254 | /* For a function, create a stub, if needed. */ | |
7255 | if (h->type == STT_FUNC | |
7256 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
7257 | { | |
7258 | if (! elf_hash_table (info)->dynamic_sections_created) | |
7259 | return true; | |
7260 | ||
7261 | /* If this symbol is not defined in a regular file, then set | |
7262 | the symbol to the stub location. This is required to make | |
7263 | function pointers compare as equal between the normal | |
7264 | executable and the shared library. */ | |
7265 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
7266 | { | |
7267 | /* We need .stub section. */ | |
303f629d MM |
7268 | s = bfd_get_section_by_name (dynobj, |
7269 | MIPS_ELF_STUB_SECTION_NAME (dynobj)); | |
252b5132 RH |
7270 | BFD_ASSERT (s != NULL); |
7271 | ||
7272 | h->root.u.def.section = s; | |
7273 | h->root.u.def.value = s->_raw_size; | |
7274 | ||
7275 | /* XXX Write this stub address somewhere. */ | |
7276 | h->plt.offset = s->_raw_size; | |
7277 | ||
7278 | /* Make room for this stub code. */ | |
7279 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
7280 | ||
7281 | /* The last half word of the stub will be filled with the index | |
7282 | of this symbol in .dynsym section. */ | |
7283 | return true; | |
7284 | } | |
7285 | } | |
7286 | ||
7287 | /* If this is a weak symbol, and there is a real definition, the | |
7288 | processor independent code will have arranged for us to see the | |
7289 | real definition first, and we can just use the same value. */ | |
7290 | if (h->weakdef != NULL) | |
7291 | { | |
7292 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
7293 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
7294 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
7295 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
7296 | return true; | |
7297 | } | |
7298 | ||
7299 | /* This is a reference to a symbol defined by a dynamic object which | |
7300 | is not a function. */ | |
7301 | ||
7302 | return true; | |
7303 | } | |
7304 | ||
7305 | /* This function is called after all the input files have been read, | |
7306 | and the input sections have been assigned to output sections. We | |
7307 | check for any mips16 stub sections that we can discard. */ | |
7308 | ||
7309 | static boolean mips_elf_check_mips16_stubs | |
7310 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
7311 | ||
103186c6 MM |
7312 | boolean |
7313 | _bfd_mips_elf_always_size_sections (output_bfd, info) | |
252b5132 RH |
7314 | bfd *output_bfd; |
7315 | struct bfd_link_info *info; | |
7316 | { | |
7317 | asection *ri; | |
7318 | ||
7319 | /* The .reginfo section has a fixed size. */ | |
7320 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
7321 | if (ri != NULL) | |
7322 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); | |
7323 | ||
7324 | if (info->relocateable | |
7325 | || ! mips_elf_hash_table (info)->mips16_stubs_seen) | |
7326 | return true; | |
7327 | ||
7328 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
7329 | mips_elf_check_mips16_stubs, | |
7330 | (PTR) NULL); | |
7331 | ||
7332 | return true; | |
7333 | } | |
7334 | ||
7335 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
7336 | discard them. */ | |
7337 | ||
7338 | /*ARGSUSED*/ | |
7339 | static boolean | |
7340 | mips_elf_check_mips16_stubs (h, data) | |
7341 | struct mips_elf_link_hash_entry *h; | |
5f771d47 | 7342 | PTR data ATTRIBUTE_UNUSED; |
252b5132 RH |
7343 | { |
7344 | if (h->fn_stub != NULL | |
7345 | && ! h->need_fn_stub) | |
7346 | { | |
7347 | /* We don't need the fn_stub; the only references to this symbol | |
7348 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
7349 | being included in the link. */ | |
7350 | h->fn_stub->_raw_size = 0; | |
7351 | h->fn_stub->_cooked_size = 0; | |
7352 | h->fn_stub->flags &= ~ SEC_RELOC; | |
7353 | h->fn_stub->reloc_count = 0; | |
7354 | h->fn_stub->flags |= SEC_EXCLUDE; | |
7355 | } | |
7356 | ||
7357 | if (h->call_stub != NULL | |
7358 | && h->root.other == STO_MIPS16) | |
7359 | { | |
7360 | /* We don't need the call_stub; this is a 16 bit function, so | |
7361 | calls from other 16 bit functions are OK. Clobber the size | |
7362 | to 0 to prevent it from being included in the link. */ | |
7363 | h->call_stub->_raw_size = 0; | |
7364 | h->call_stub->_cooked_size = 0; | |
7365 | h->call_stub->flags &= ~ SEC_RELOC; | |
7366 | h->call_stub->reloc_count = 0; | |
7367 | h->call_stub->flags |= SEC_EXCLUDE; | |
7368 | } | |
7369 | ||
7370 | if (h->call_fp_stub != NULL | |
7371 | && h->root.other == STO_MIPS16) | |
7372 | { | |
7373 | /* We don't need the call_stub; this is a 16 bit function, so | |
7374 | calls from other 16 bit functions are OK. Clobber the size | |
7375 | to 0 to prevent it from being included in the link. */ | |
7376 | h->call_fp_stub->_raw_size = 0; | |
7377 | h->call_fp_stub->_cooked_size = 0; | |
7378 | h->call_fp_stub->flags &= ~ SEC_RELOC; | |
7379 | h->call_fp_stub->reloc_count = 0; | |
7380 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
7381 | } | |
7382 | ||
7383 | return true; | |
7384 | } | |
7385 | ||
7386 | /* Set the sizes of the dynamic sections. */ | |
7387 | ||
103186c6 MM |
7388 | boolean |
7389 | _bfd_mips_elf_size_dynamic_sections (output_bfd, info) | |
252b5132 RH |
7390 | bfd *output_bfd; |
7391 | struct bfd_link_info *info; | |
7392 | { | |
7393 | bfd *dynobj; | |
7394 | asection *s; | |
7395 | boolean reltext; | |
252b5132 RH |
7396 | struct mips_got_info *g; |
7397 | ||
7398 | dynobj = elf_hash_table (info)->dynobj; | |
7399 | BFD_ASSERT (dynobj != NULL); | |
7400 | ||
7401 | if (elf_hash_table (info)->dynamic_sections_created) | |
7402 | { | |
7403 | /* Set the contents of the .interp section to the interpreter. */ | |
7404 | if (! info->shared) | |
7405 | { | |
7406 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7407 | BFD_ASSERT (s != NULL); | |
303f629d MM |
7408 | s->_raw_size |
7409 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; | |
7410 | s->contents | |
7403cb63 | 7411 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); |
252b5132 RH |
7412 | } |
7413 | } | |
7414 | ||
252b5132 RH |
7415 | /* The check_relocs and adjust_dynamic_symbol entry points have |
7416 | determined the sizes of the various dynamic sections. Allocate | |
7417 | memory for them. */ | |
7418 | reltext = false; | |
7419 | for (s = dynobj->sections; s != NULL; s = s->next) | |
7420 | { | |
7421 | const char *name; | |
7422 | boolean strip; | |
7423 | ||
7424 | /* It's OK to base decisions on the section name, because none | |
7425 | of the dynobj section names depend upon the input files. */ | |
7426 | name = bfd_get_section_name (dynobj, s); | |
7427 | ||
7428 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7429 | continue; | |
7430 | ||
7431 | strip = false; | |
7432 | ||
7433 | if (strncmp (name, ".rel", 4) == 0) | |
7434 | { | |
7435 | if (s->_raw_size == 0) | |
7436 | { | |
7437 | /* We only strip the section if the output section name | |
7438 | has the same name. Otherwise, there might be several | |
7439 | input sections for this output section. FIXME: This | |
7440 | code is probably not needed these days anyhow, since | |
7441 | the linker now does not create empty output sections. */ | |
7442 | if (s->output_section != NULL | |
7443 | && strcmp (name, | |
7444 | bfd_get_section_name (s->output_section->owner, | |
7445 | s->output_section)) == 0) | |
7446 | strip = true; | |
7447 | } | |
7448 | else | |
7449 | { | |
7450 | const char *outname; | |
7451 | asection *target; | |
7452 | ||
7453 | /* If this relocation section applies to a read only | |
7454 | section, then we probably need a DT_TEXTREL entry. | |
7455 | If the relocation section is .rel.dyn, we always | |
7456 | assert a DT_TEXTREL entry rather than testing whether | |
7457 | there exists a relocation to a read only section or | |
7458 | not. */ | |
7459 | outname = bfd_get_section_name (output_bfd, | |
7460 | s->output_section); | |
7461 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
7462 | if ((target != NULL | |
7463 | && (target->flags & SEC_READONLY) != 0 | |
7464 | && (target->flags & SEC_ALLOC) != 0) | |
103186c6 MM |
7465 | || strcmp (outname, |
7466 | MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0) | |
252b5132 RH |
7467 | reltext = true; |
7468 | ||
7469 | /* We use the reloc_count field as a counter if we need | |
7470 | to copy relocs into the output file. */ | |
103186c6 MM |
7471 | if (strcmp (name, |
7472 | MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0) | |
252b5132 RH |
7473 | s->reloc_count = 0; |
7474 | } | |
7475 | } | |
7476 | else if (strncmp (name, ".got", 4) == 0) | |
7477 | { | |
7478 | int i; | |
7403cb63 MM |
7479 | bfd_size_type loadable_size = 0; |
7480 | bfd_size_type local_gotno; | |
7481 | struct _bfd *sub; | |
252b5132 | 7482 | |
7403cb63 | 7483 | BFD_ASSERT (elf_section_data (s) != NULL); |
252b5132 | 7484 | g = (struct mips_got_info *) elf_section_data (s)->tdata; |
7403cb63 MM |
7485 | BFD_ASSERT (g != NULL); |
7486 | ||
7487 | /* Calculate the total loadable size of the output. That | |
7488 | will give us the maximum number of GOT_PAGE entries | |
7489 | required. */ | |
7490 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
7491 | { | |
7492 | asection *subsection; | |
7493 | ||
7494 | for (subsection = sub->sections; | |
7495 | subsection; | |
7496 | subsection = subsection->next) | |
7497 | { | |
7498 | if ((subsection->flags & SEC_ALLOC) == 0) | |
7499 | continue; | |
7500 | loadable_size += (subsection->_raw_size + 0xf) & ~0xf; | |
7501 | } | |
7502 | } | |
7503 | loadable_size += MIPS_FUNCTION_STUB_SIZE; | |
7504 | ||
7505 | /* Assume there are two loadable segments consisting of | |
7506 | contiguous sections. Is 5 enough? */ | |
7507 | local_gotno = (loadable_size >> 16) + 5; | |
7508 | g->local_gotno += local_gotno; | |
103186c6 | 7509 | s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj); |
7403cb63 MM |
7510 | |
7511 | /* There has to be a global GOT entry for every symbol with | |
7512 | a dynamic symbol table index of DT_MIPS_GOTSYM or | |
7513 | higher. Therefore, it make sense to put those symbols | |
7514 | that need GOT entries at the end of the symbol table. We | |
7515 | do that here. */ | |
7516 | if (!mips_elf_sort_hash_table (info)) | |
7517 | return false; | |
7518 | ||
7519 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; | |
103186c6 | 7520 | s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj); |
252b5132 | 7521 | } |
303f629d | 7522 | else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0) |
252b5132 RH |
7523 | { |
7524 | /* Irix rld assumes that the function stub isn't at the end | |
7525 | of .text section. So put a dummy. XXX */ | |
7526 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
7527 | } | |
7528 | else if (! info->shared | |
7529 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
7530 | && strncmp (name, ".rld_map", 8) == 0) | |
7531 | { | |
7532 | /* We add a room for __rld_map. It will be filled in by the | |
7533 | rtld to contain a pointer to the _r_debug structure. */ | |
7534 | s->_raw_size += 4; | |
7535 | } | |
7536 | else if (SGI_COMPAT (output_bfd) | |
7537 | && strncmp (name, ".compact_rel", 12) == 0) | |
7538 | s->_raw_size += mips_elf_hash_table (info)->compact_rel_size; | |
c6142e5d MM |
7539 | else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)) |
7540 | == 0) | |
7541 | s->_raw_size = (sizeof (Elf32_External_Msym) | |
7542 | * (elf_hash_table (info)->dynsymcount | |
7543 | + bfd_count_sections (output_bfd))); | |
252b5132 RH |
7544 | else if (strncmp (name, ".init", 5) != 0) |
7545 | { | |
7546 | /* It's not one of our sections, so don't allocate space. */ | |
7547 | continue; | |
7548 | } | |
7549 | ||
7550 | if (strip) | |
7551 | { | |
7552 | _bfd_strip_section_from_output (s); | |
7553 | continue; | |
7554 | } | |
7555 | ||
7556 | /* Allocate memory for the section contents. */ | |
303f629d | 7557 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
252b5132 RH |
7558 | if (s->contents == NULL && s->_raw_size != 0) |
7559 | { | |
7560 | bfd_set_error (bfd_error_no_memory); | |
7561 | return false; | |
7562 | } | |
252b5132 RH |
7563 | } |
7564 | ||
7565 | if (elf_hash_table (info)->dynamic_sections_created) | |
7566 | { | |
7567 | /* Add some entries to the .dynamic section. We fill in the | |
7568 | values later, in elf_mips_finish_dynamic_sections, but we | |
7569 | must add the entries now so that we get the correct size for | |
7570 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7571 | dynamic linker and used by the debugger. */ | |
7572 | if (! info->shared) | |
7573 | { | |
7574 | if (SGI_COMPAT (output_bfd)) | |
7575 | { | |
7576 | /* SGI object has the equivalence of DT_DEBUG in the | |
7577 | DT_MIPS_RLD_MAP entry. */ | |
103186c6 | 7578 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) |
252b5132 RH |
7579 | return false; |
7580 | } | |
7581 | else | |
103186c6 | 7582 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) |
252b5132 RH |
7583 | return false; |
7584 | } | |
7585 | ||
7586 | if (reltext) | |
7587 | { | |
103186c6 | 7588 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) |
252b5132 RH |
7589 | return false; |
7590 | } | |
7591 | ||
103186c6 | 7592 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) |
252b5132 RH |
7593 | return false; |
7594 | ||
103186c6 MM |
7595 | if (bfd_get_section_by_name (dynobj, |
7596 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj))) | |
252b5132 | 7597 | { |
103186c6 | 7598 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) |
252b5132 RH |
7599 | return false; |
7600 | ||
103186c6 | 7601 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
252b5132 RH |
7602 | return false; |
7603 | ||
103186c6 | 7604 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
252b5132 RH |
7605 | return false; |
7606 | } | |
7607 | ||
103186c6 | 7608 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0)) |
252b5132 RH |
7609 | return false; |
7610 | ||
103186c6 | 7611 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0)) |
252b5132 RH |
7612 | return false; |
7613 | ||
7614 | if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) | |
7615 | { | |
103186c6 | 7616 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0)) |
252b5132 RH |
7617 | return false; |
7618 | ||
7619 | s = bfd_get_section_by_name (dynobj, ".liblist"); | |
7620 | BFD_ASSERT (s != NULL); | |
7621 | ||
103186c6 | 7622 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0)) |
252b5132 RH |
7623 | return false; |
7624 | } | |
7625 | ||
103186c6 | 7626 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
252b5132 RH |
7627 | return false; |
7628 | ||
103186c6 | 7629 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
252b5132 RH |
7630 | return false; |
7631 | ||
7632 | #if 0 | |
7633 | /* Time stamps in executable files are a bad idea. */ | |
103186c6 | 7634 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0)) |
252b5132 RH |
7635 | return false; |
7636 | #endif | |
7637 | ||
7638 | #if 0 /* FIXME */ | |
103186c6 | 7639 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0)) |
252b5132 RH |
7640 | return false; |
7641 | #endif | |
7642 | ||
7643 | #if 0 /* FIXME */ | |
103186c6 | 7644 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0)) |
252b5132 RH |
7645 | return false; |
7646 | #endif | |
7647 | ||
103186c6 | 7648 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
252b5132 RH |
7649 | return false; |
7650 | ||
103186c6 | 7651 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
252b5132 RH |
7652 | return false; |
7653 | ||
103186c6 | 7654 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
252b5132 RH |
7655 | return false; |
7656 | ||
103186c6 | 7657 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
252b5132 RH |
7658 | return false; |
7659 | ||
103186c6 | 7660 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
252b5132 RH |
7661 | return false; |
7662 | ||
7403cb63 | 7663 | if (IRIX_COMPAT (dynobj) == ict_irix5 |
103186c6 | 7664 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) |
252b5132 RH |
7665 | return false; |
7666 | ||
7403cb63 MM |
7667 | if (IRIX_COMPAT (dynobj) == ict_irix6 |
7668 | && (bfd_get_section_by_name | |
7669 | (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) | |
103186c6 | 7670 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
7403cb63 | 7671 | return false; |
c6142e5d MM |
7672 | |
7673 | if (bfd_get_section_by_name (dynobj, | |
7674 | MIPS_ELF_MSYM_SECTION_NAME (dynobj)) | |
103186c6 | 7675 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0)) |
c6142e5d | 7676 | return false; |
252b5132 RH |
7677 | } |
7678 | ||
7679 | /* If we use dynamic linking, we generate a section symbol for each | |
7680 | output section. These are local symbols, which means that they | |
7681 | must come first in the dynamic symbol table. | |
7682 | That means we must increment the dynamic symbol index of every | |
7683 | other dynamic symbol. */ | |
7684 | { | |
7685 | unsigned int c, i; | |
252b5132 RH |
7686 | |
7687 | c = 0; | |
7688 | if (elf_hash_table (info)->dynamic_sections_created) | |
7689 | { | |
103186c6 MM |
7690 | c = bfd_count_sections (output_bfd); |
7691 | elf_link_hash_traverse (elf_hash_table (info), | |
7692 | _bfd_elf_link_adjust_dynindx, | |
7693 | (PTR) &c); | |
7694 | elf_hash_table (info)->dynsymcount += c; | |
252b5132 | 7695 | |
103186c6 | 7696 | for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) |
252b5132 | 7697 | { |
103186c6 MM |
7698 | elf_section_data (s)->dynindx = i; |
7699 | /* These symbols will have no names, so we don't need to | |
7700 | fiddle with dynstr_index. */ | |
252b5132 RH |
7701 | } |
7702 | } | |
252b5132 RH |
7703 | } |
7704 | ||
7705 | return true; | |
7706 | } | |
7707 | ||
7403cb63 MM |
7708 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
7709 | adjust it appropriately now. */ | |
7710 | ||
7711 | static void | |
7712 | mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym) | |
5f771d47 | 7713 | bfd *abfd ATTRIBUTE_UNUSED; |
7403cb63 MM |
7714 | const char *name; |
7715 | Elf_Internal_Sym *sym; | |
7716 | { | |
7717 | /* The linker script takes care of providing names and values for | |
7718 | these, but we must place them into the right sections. */ | |
7719 | static const char* const text_section_symbols[] = { | |
7720 | "_ftext", | |
7721 | "_etext", | |
7722 | "__dso_displacement", | |
7723 | "__elf_header", | |
7724 | "__program_header_table", | |
7725 | NULL | |
7726 | }; | |
7727 | ||
7728 | static const char* const data_section_symbols[] = { | |
7729 | "_fdata", | |
7730 | "_edata", | |
7731 | "_end", | |
7732 | "_fbss", | |
7733 | NULL | |
7734 | }; | |
7735 | ||
7736 | const char* const *p; | |
7737 | int i; | |
7738 | ||
7739 | for (i = 0; i < 2; ++i) | |
7740 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
7741 | *p; | |
7742 | ++p) | |
7743 | if (strcmp (*p, name) == 0) | |
7744 | { | |
7745 | /* All of these symbols are given type STT_SECTION by the | |
7746 | IRIX6 linker. */ | |
7747 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7748 | ||
7749 | /* The IRIX linker puts these symbols in special sections. */ | |
7750 | if (i == 0) | |
7751 | sym->st_shndx = SHN_MIPS_TEXT; | |
7752 | else | |
7753 | sym->st_shndx = SHN_MIPS_DATA; | |
7754 | ||
7755 | break; | |
7756 | } | |
7757 | } | |
7758 | ||
252b5132 RH |
7759 | /* Finish up dynamic symbol handling. We set the contents of various |
7760 | dynamic sections here. */ | |
7761 | ||
103186c6 MM |
7762 | boolean |
7763 | _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
252b5132 RH |
7764 | bfd *output_bfd; |
7765 | struct bfd_link_info *info; | |
7766 | struct elf_link_hash_entry *h; | |
7767 | Elf_Internal_Sym *sym; | |
7768 | { | |
7769 | bfd *dynobj; | |
7770 | bfd_vma gval; | |
7771 | asection *sgot; | |
c6142e5d | 7772 | asection *smsym; |
252b5132 RH |
7773 | struct mips_got_info *g; |
7774 | const char *name; | |
c6142e5d | 7775 | struct mips_elf_link_hash_entry *mh; |
252b5132 RH |
7776 | |
7777 | dynobj = elf_hash_table (info)->dynobj; | |
7778 | gval = sym->st_value; | |
c6142e5d | 7779 | mh = (struct mips_elf_link_hash_entry *) h; |
252b5132 RH |
7780 | |
7781 | if (h->plt.offset != (bfd_vma) -1) | |
7782 | { | |
7783 | asection *s; | |
7784 | bfd_byte *p; | |
7785 | bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; | |
7786 | ||
7787 | /* This symbol has a stub. Set it up. */ | |
7788 | ||
7789 | BFD_ASSERT (h->dynindx != -1); | |
7790 | ||
303f629d MM |
7791 | s = bfd_get_section_by_name (dynobj, |
7792 | MIPS_ELF_STUB_SECTION_NAME (dynobj)); | |
252b5132 RH |
7793 | BFD_ASSERT (s != NULL); |
7794 | ||
7795 | /* Fill the stub. */ | |
7796 | p = stub; | |
7797 | bfd_put_32 (output_bfd, STUB_LW(output_bfd), p); | |
7798 | p += 4; | |
7799 | bfd_put_32 (output_bfd, STUB_MOVE, p); | |
7800 | p += 4; | |
7801 | ||
7802 | /* FIXME: Can h->dynindex be more than 64K? */ | |
7803 | if (h->dynindx & 0xffff0000) | |
7804 | return false; | |
7805 | ||
7806 | bfd_put_32 (output_bfd, STUB_JALR, p); | |
7807 | p += 4; | |
7808 | bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p); | |
7809 | ||
7810 | BFD_ASSERT (h->plt.offset <= s->_raw_size); | |
7811 | memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); | |
7812 | ||
7813 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
7814 | only for the referenced symbol. */ | |
7815 | sym->st_shndx = SHN_UNDEF; | |
7816 | ||
7817 | /* The run-time linker uses the st_value field of the symbol | |
7818 | to reset the global offset table entry for this external | |
7819 | to its stub address when unlinking a shared object. */ | |
7820 | gval = s->output_section->vma + s->output_offset + h->plt.offset; | |
7821 | sym->st_value = gval; | |
7822 | } | |
7823 | ||
7824 | BFD_ASSERT (h->dynindx != -1); | |
7825 | ||
103186c6 | 7826 | sgot = mips_elf_got_section (dynobj); |
252b5132 RH |
7827 | BFD_ASSERT (sgot != NULL); |
7828 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
7829 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
7830 | BFD_ASSERT (g != NULL); | |
7831 | ||
7403cb63 MM |
7832 | /* Run through the global symbol table, creating GOT entries for all |
7833 | the symbols that need them. */ | |
7834 | if (h->dynindx >= g->global_gotsym->dynindx) | |
252b5132 | 7835 | { |
7403cb63 MM |
7836 | bfd_vma offset; |
7837 | bfd_vma value; | |
252b5132 | 7838 | |
7403cb63 MM |
7839 | if (sym->st_value) |
7840 | value = sym->st_value; | |
7841 | else | |
7842 | /* For an entity defined in a shared object, this will be | |
7843 | NULL. (For functions in shared objects for | |
7844 | which we have created stubs, ST_VALUE will be non-NULL. | |
7845 | That's because such the functions are now no longer defined | |
7846 | in a shared object.) */ | |
7847 | value = h->root.u.def.value; | |
7848 | ||
7849 | offset = mips_elf_global_got_index (dynobj, h); | |
103186c6 | 7850 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
252b5132 RH |
7851 | } |
7852 | ||
c6142e5d MM |
7853 | /* Create a .msym entry, if appropriate. */ |
7854 | smsym = bfd_get_section_by_name (dynobj, | |
7855 | MIPS_ELF_MSYM_SECTION_NAME (dynobj)); | |
7856 | if (smsym) | |
7857 | { | |
7858 | Elf32_Internal_Msym msym; | |
7859 | ||
7860 | msym.ms_hash_value = bfd_elf_hash (h->root.root.string); | |
7861 | /* It is undocumented what the `1' indicates, but IRIX6 uses | |
7862 | this value. */ | |
7863 | msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1); | |
7864 | bfd_mips_elf_swap_msym_out | |
7865 | (dynobj, &msym, | |
7866 | ((Elf32_External_Msym *) smsym->contents) + h->dynindx); | |
7867 | } | |
7868 | ||
252b5132 RH |
7869 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
7870 | name = h->root.root.string; | |
7871 | if (strcmp (name, "_DYNAMIC") == 0 | |
7872 | || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7873 | sym->st_shndx = SHN_ABS; | |
7874 | else if (strcmp (name, "_DYNAMIC_LINK") == 0) | |
7875 | { | |
7876 | sym->st_shndx = SHN_ABS; | |
7877 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7878 | sym->st_value = 1; | |
7879 | } | |
7880 | else if (SGI_COMPAT (output_bfd)) | |
7881 | { | |
7882 | if (strcmp (name, "_gp_disp") == 0) | |
7883 | { | |
7884 | sym->st_shndx = SHN_ABS; | |
7885 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7886 | sym->st_value = elf_gp (output_bfd); | |
7887 | } | |
7888 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
7889 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
7890 | { | |
7891 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7892 | sym->st_other = STO_PROTECTED; | |
7893 | sym->st_value = 0; | |
7894 | sym->st_shndx = SHN_MIPS_DATA; | |
7895 | } | |
7896 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
7897 | { | |
7898 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7899 | sym->st_other = STO_PROTECTED; | |
7900 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
7901 | sym->st_shndx = SHN_ABS; | |
7902 | } | |
7903 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
7904 | { | |
7905 | if (h->type == STT_FUNC) | |
7906 | sym->st_shndx = SHN_MIPS_TEXT; | |
7907 | else if (h->type == STT_OBJECT) | |
7908 | sym->st_shndx = SHN_MIPS_DATA; | |
7909 | } | |
7910 | } | |
7911 | ||
7403cb63 MM |
7912 | /* Handle the IRIX6-specific symbols. */ |
7913 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
7914 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
7915 | ||
252b5132 RH |
7916 | if (SGI_COMPAT (output_bfd) |
7917 | && ! info->shared) | |
7918 | { | |
7919 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
7920 | && strcmp (name, "__rld_map") == 0) | |
7921 | { | |
7922 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
7923 | BFD_ASSERT (s != NULL); | |
7924 | sym->st_value = s->output_section->vma + s->output_offset; | |
7925 | bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents); | |
7926 | if (mips_elf_hash_table (info)->rld_value == 0) | |
7927 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
7928 | } | |
7929 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
7930 | && strcmp (name, "__rld_obj_head") == 0) | |
7931 | { | |
303f629d MM |
7932 | /* IRIX6 does not use a .rld_map section. */ |
7933 | if (IRIX_COMPAT (output_bfd) == ict_irix5) | |
7934 | BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map") | |
7935 | != NULL); | |
252b5132 RH |
7936 | mips_elf_hash_table (info)->rld_value = sym->st_value; |
7937 | } | |
7938 | } | |
7939 | ||
7940 | /* If this is a mips16 symbol, force the value to be even. */ | |
7941 | if (sym->st_other == STO_MIPS16 | |
7942 | && (sym->st_value & 1) != 0) | |
7943 | --sym->st_value; | |
7944 | ||
7945 | return true; | |
7946 | } | |
7947 | ||
7948 | /* Finish up the dynamic sections. */ | |
7949 | ||
103186c6 MM |
7950 | boolean |
7951 | _bfd_mips_elf_finish_dynamic_sections (output_bfd, info) | |
252b5132 RH |
7952 | bfd *output_bfd; |
7953 | struct bfd_link_info *info; | |
7954 | { | |
7955 | bfd *dynobj; | |
7956 | asection *sdyn; | |
7957 | asection *sgot; | |
7958 | struct mips_got_info *g; | |
7959 | ||
7960 | dynobj = elf_hash_table (info)->dynobj; | |
7961 | ||
7962 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
7963 | ||
103186c6 | 7964 | sgot = mips_elf_got_section (dynobj); |
252b5132 RH |
7965 | if (sgot == NULL) |
7966 | g = NULL; | |
7967 | else | |
7968 | { | |
7969 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
7970 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
7971 | BFD_ASSERT (g != NULL); | |
7972 | } | |
7973 | ||
7974 | if (elf_hash_table (info)->dynamic_sections_created) | |
7975 | { | |
103186c6 | 7976 | bfd_byte *b; |
252b5132 RH |
7977 | |
7978 | BFD_ASSERT (sdyn != NULL); | |
7979 | BFD_ASSERT (g != NULL); | |
7980 | ||
103186c6 MM |
7981 | for (b = sdyn->contents; |
7982 | b < sdyn->contents + sdyn->_raw_size; | |
7983 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
252b5132 RH |
7984 | { |
7985 | Elf_Internal_Dyn dyn; | |
7986 | const char *name; | |
7987 | size_t elemsize; | |
7988 | asection *s; | |
103186c6 | 7989 | boolean swap_out_p; |
252b5132 | 7990 | |
103186c6 MM |
7991 | /* Read in the current dynamic entry. */ |
7992 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
7993 | ||
7994 | /* Assume that we're going to modify it and write it out. */ | |
7995 | swap_out_p = true; | |
252b5132 RH |
7996 | |
7997 | switch (dyn.d_tag) | |
7998 | { | |
252b5132 | 7999 | case DT_RELENT: |
103186c6 MM |
8000 | s = (bfd_get_section_by_name |
8001 | (dynobj, | |
8002 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj))); | |
252b5132 | 8003 | BFD_ASSERT (s != NULL); |
103186c6 | 8004 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
252b5132 RH |
8005 | break; |
8006 | ||
8007 | case DT_STRSZ: | |
8008 | /* Rewrite DT_STRSZ. */ | |
8009 | dyn.d_un.d_val = | |
8010 | _bfd_stringtab_size (elf_hash_table (info)->dynstr); | |
252b5132 RH |
8011 | break; |
8012 | ||
8013 | case DT_PLTGOT: | |
8014 | name = ".got"; | |
8015 | goto get_vma; | |
8016 | case DT_MIPS_CONFLICT: | |
8017 | name = ".conflict"; | |
8018 | goto get_vma; | |
8019 | case DT_MIPS_LIBLIST: | |
8020 | name = ".liblist"; | |
8021 | get_vma: | |
8022 | s = bfd_get_section_by_name (output_bfd, name); | |
8023 | BFD_ASSERT (s != NULL); | |
8024 | dyn.d_un.d_ptr = s->vma; | |
252b5132 RH |
8025 | break; |
8026 | ||
8027 | case DT_MIPS_RLD_VERSION: | |
8028 | dyn.d_un.d_val = 1; /* XXX */ | |
252b5132 RH |
8029 | break; |
8030 | ||
8031 | case DT_MIPS_FLAGS: | |
8032 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
252b5132 RH |
8033 | break; |
8034 | ||
8035 | case DT_MIPS_CONFLICTNO: | |
8036 | name = ".conflict"; | |
8037 | elemsize = sizeof (Elf32_Conflict); | |
8038 | goto set_elemno; | |
8039 | ||
8040 | case DT_MIPS_LIBLISTNO: | |
8041 | name = ".liblist"; | |
8042 | elemsize = sizeof (Elf32_Lib); | |
8043 | set_elemno: | |
8044 | s = bfd_get_section_by_name (output_bfd, name); | |
8045 | if (s != NULL) | |
8046 | { | |
8047 | if (s->_cooked_size != 0) | |
8048 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
8049 | else | |
8050 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
8051 | } | |
8052 | else | |
8053 | dyn.d_un.d_val = 0; | |
252b5132 RH |
8054 | break; |
8055 | ||
8056 | case DT_MIPS_TIME_STAMP: | |
8057 | time ((time_t *) &dyn.d_un.d_val); | |
252b5132 RH |
8058 | break; |
8059 | ||
8060 | case DT_MIPS_ICHECKSUM: | |
8061 | /* XXX FIXME: */ | |
103186c6 | 8062 | swap_out_p = false; |
252b5132 RH |
8063 | break; |
8064 | ||
8065 | case DT_MIPS_IVERSION: | |
8066 | /* XXX FIXME: */ | |
103186c6 | 8067 | swap_out_p = false; |
252b5132 RH |
8068 | break; |
8069 | ||
8070 | case DT_MIPS_BASE_ADDRESS: | |
8071 | s = output_bfd->sections; | |
8072 | BFD_ASSERT (s != NULL); | |
8073 | dyn.d_un.d_ptr = s->vma & ~(0xffff); | |
252b5132 RH |
8074 | break; |
8075 | ||
8076 | case DT_MIPS_LOCAL_GOTNO: | |
8077 | dyn.d_un.d_val = g->local_gotno; | |
252b5132 RH |
8078 | break; |
8079 | ||
8080 | case DT_MIPS_SYMTABNO: | |
8081 | name = ".dynsym"; | |
103186c6 | 8082 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); |
252b5132 RH |
8083 | s = bfd_get_section_by_name (output_bfd, name); |
8084 | BFD_ASSERT (s != NULL); | |
8085 | ||
8086 | if (s->_cooked_size != 0) | |
8087 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
8088 | else | |
8089 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
252b5132 RH |
8090 | break; |
8091 | ||
8092 | case DT_MIPS_UNREFEXTNO: | |
7403cb63 MM |
8093 | /* The index into the dynamic symbol table which is the |
8094 | entry of the first external symbol that is not | |
8095 | referenced within the same object. */ | |
8096 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
252b5132 RH |
8097 | break; |
8098 | ||
8099 | case DT_MIPS_GOTSYM: | |
7403cb63 | 8100 | dyn.d_un.d_val = g->global_gotsym->dynindx; |
252b5132 RH |
8101 | break; |
8102 | ||
8103 | case DT_MIPS_HIPAGENO: | |
8104 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; | |
252b5132 RH |
8105 | break; |
8106 | ||
8107 | case DT_MIPS_RLD_MAP: | |
8108 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
252b5132 RH |
8109 | break; |
8110 | ||
7403cb63 MM |
8111 | case DT_MIPS_OPTIONS: |
8112 | s = (bfd_get_section_by_name | |
8113 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
8114 | dyn.d_un.d_ptr = s->vma; | |
7403cb63 MM |
8115 | break; |
8116 | ||
c6142e5d MM |
8117 | case DT_MIPS_MSYM: |
8118 | s = (bfd_get_section_by_name | |
8119 | (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))); | |
8120 | dyn.d_un.d_ptr = s->vma; | |
103186c6 MM |
8121 | break; |
8122 | ||
8123 | default: | |
8124 | swap_out_p = false; | |
c6142e5d | 8125 | break; |
252b5132 | 8126 | } |
103186c6 MM |
8127 | |
8128 | if (swap_out_p) | |
8129 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
8130 | (dynobj, &dyn, b); | |
252b5132 RH |
8131 | } |
8132 | } | |
8133 | ||
8134 | /* The first entry of the global offset table will be filled at | |
8135 | runtime. The second entry will be used by some runtime loaders. | |
8136 | This isn't the case of Irix rld. */ | |
8137 | if (sgot != NULL && sgot->_raw_size > 0) | |
8138 | { | |
103186c6 MM |
8139 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); |
8140 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000, | |
8141 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
252b5132 RH |
8142 | } |
8143 | ||
8144 | if (sgot != NULL) | |
103186c6 MM |
8145 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
8146 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
252b5132 RH |
8147 | |
8148 | { | |
8149 | asection *sdynsym; | |
c6142e5d | 8150 | asection *smsym; |
252b5132 RH |
8151 | asection *s; |
8152 | Elf_Internal_Sym sym; | |
8153 | Elf32_compact_rel cpt; | |
8154 | ||
8155 | /* Set up the section symbols for the output sections. SGI sets | |
8156 | the STT_NOTYPE attribute for these symbols. Should we do so? */ | |
8157 | ||
8158 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
c6142e5d MM |
8159 | smsym = bfd_get_section_by_name (dynobj, |
8160 | MIPS_ELF_MSYM_SECTION_NAME (dynobj)); | |
252b5132 RH |
8161 | if (sdynsym != NULL) |
8162 | { | |
103186c6 | 8163 | Elf32_Internal_Msym msym; |
c6142e5d | 8164 | |
103186c6 MM |
8165 | sym.st_size = 0; |
8166 | sym.st_name = 0; | |
8167 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
8168 | sym.st_other = 0; | |
252b5132 | 8169 | |
103186c6 MM |
8170 | msym.ms_hash_value = 0; |
8171 | msym.ms_info = ELF32_MS_INFO (0, 1); | |
c6142e5d | 8172 | |
103186c6 MM |
8173 | for (s = output_bfd->sections; s != NULL; s = s->next) |
8174 | { | |
8175 | int indx; | |
8176 | long dynindx; | |
252b5132 | 8177 | |
103186c6 | 8178 | sym.st_value = s->vma; |
252b5132 | 8179 | |
103186c6 MM |
8180 | indx = elf_section_data (s)->this_idx; |
8181 | BFD_ASSERT (indx > 0); | |
8182 | sym.st_shndx = indx; | |
c6142e5d | 8183 | |
103186c6 | 8184 | dynindx = elf_section_data (s)->dynindx; |
c6142e5d | 8185 | |
103186c6 MM |
8186 | (*get_elf_backend_data (output_bfd)->s->swap_symbol_out) |
8187 | (output_bfd, &sym, | |
8188 | sdynsym->contents | |
8189 | + (dynindx * MIPS_ELF_SYM_SIZE (output_bfd))); | |
c6142e5d | 8190 | |
103186c6 MM |
8191 | if (smsym) |
8192 | bfd_mips_elf_swap_msym_out | |
8193 | (output_bfd, &msym, | |
8194 | (((Elf32_External_Msym *) smsym->contents) | |
8195 | + dynindx)); | |
8196 | } | |
252b5132 | 8197 | |
103186c6 | 8198 | /* Set the sh_info field of the output .dynsym section to |
252b5132 | 8199 | the index of the first global symbol. */ |
103186c6 MM |
8200 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = |
8201 | bfd_count_sections (output_bfd) + 1; | |
252b5132 RH |
8202 | } |
8203 | ||
8204 | if (SGI_COMPAT (output_bfd)) | |
8205 | { | |
8206 | /* Write .compact_rel section out. */ | |
8207 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
8208 | if (s != NULL) | |
8209 | { | |
8210 | cpt.id1 = 1; | |
8211 | cpt.num = s->reloc_count; | |
8212 | cpt.id2 = 2; | |
8213 | cpt.offset = (s->output_section->filepos | |
8214 | + sizeof (Elf32_External_compact_rel)); | |
8215 | cpt.reserved0 = 0; | |
8216 | cpt.reserved1 = 0; | |
8217 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
8218 | ((Elf32_External_compact_rel *) | |
8219 | s->contents)); | |
8220 | ||
8221 | /* Clean up a dummy stub function entry in .text. */ | |
303f629d MM |
8222 | s = bfd_get_section_by_name (dynobj, |
8223 | MIPS_ELF_STUB_SECTION_NAME (dynobj)); | |
252b5132 RH |
8224 | if (s != NULL) |
8225 | { | |
8226 | file_ptr dummy_offset; | |
8227 | ||
8228 | BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE); | |
8229 | dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE; | |
8230 | memset (s->contents + dummy_offset, 0, | |
8231 | MIPS_FUNCTION_STUB_SIZE); | |
8232 | } | |
8233 | } | |
8234 | } | |
8235 | ||
8236 | /* Clean up a first relocation in .rel.dyn. */ | |
103186c6 MM |
8237 | s = bfd_get_section_by_name (dynobj, |
8238 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)); | |
252b5132 | 8239 | if (s != NULL && s->_raw_size > 0) |
103186c6 | 8240 | memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj)); |
252b5132 RH |
8241 | } |
8242 | ||
8243 | return true; | |
8244 | } | |
8245 | \f | |
8246 | /* This is almost identical to bfd_generic_get_... except that some | |
8247 | MIPS relocations need to be handled specially. Sigh. */ | |
8248 | ||
8249 | static bfd_byte * | |
8250 | elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data, | |
8251 | relocateable, symbols) | |
8252 | bfd *abfd; | |
8253 | struct bfd_link_info *link_info; | |
8254 | struct bfd_link_order *link_order; | |
8255 | bfd_byte *data; | |
8256 | boolean relocateable; | |
8257 | asymbol **symbols; | |
8258 | { | |
8259 | /* Get enough memory to hold the stuff */ | |
8260 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
8261 | asection *input_section = link_order->u.indirect.section; | |
8262 | ||
8263 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
8264 | arelent **reloc_vector = NULL; | |
8265 | long reloc_count; | |
8266 | ||
8267 | if (reloc_size < 0) | |
8268 | goto error_return; | |
8269 | ||
8270 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
8271 | if (reloc_vector == NULL && reloc_size != 0) | |
8272 | goto error_return; | |
8273 | ||
8274 | /* read in the section */ | |
8275 | if (!bfd_get_section_contents (input_bfd, | |
8276 | input_section, | |
8277 | (PTR) data, | |
8278 | 0, | |
8279 | input_section->_raw_size)) | |
8280 | goto error_return; | |
8281 | ||
8282 | /* We're not relaxing the section, so just copy the size info */ | |
8283 | input_section->_cooked_size = input_section->_raw_size; | |
8284 | input_section->reloc_done = true; | |
8285 | ||
8286 | reloc_count = bfd_canonicalize_reloc (input_bfd, | |
8287 | input_section, | |
8288 | reloc_vector, | |
8289 | symbols); | |
8290 | if (reloc_count < 0) | |
8291 | goto error_return; | |
8292 | ||
8293 | if (reloc_count > 0) | |
8294 | { | |
8295 | arelent **parent; | |
8296 | /* for mips */ | |
8297 | int gp_found; | |
8298 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
8299 | ||
8300 | { | |
8301 | struct bfd_hash_entry *h; | |
8302 | struct bfd_link_hash_entry *lh; | |
8303 | /* Skip all this stuff if we aren't mixing formats. */ | |
8304 | if (abfd && input_bfd | |
8305 | && abfd->xvec == input_bfd->xvec) | |
8306 | lh = 0; | |
8307 | else | |
8308 | { | |
8309 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); | |
8310 | lh = (struct bfd_link_hash_entry *) h; | |
8311 | } | |
8312 | lookup: | |
8313 | if (lh) | |
8314 | { | |
8315 | switch (lh->type) | |
8316 | { | |
8317 | case bfd_link_hash_undefined: | |
8318 | case bfd_link_hash_undefweak: | |
8319 | case bfd_link_hash_common: | |
8320 | gp_found = 0; | |
8321 | break; | |
8322 | case bfd_link_hash_defined: | |
8323 | case bfd_link_hash_defweak: | |
8324 | gp_found = 1; | |
8325 | gp = lh->u.def.value; | |
8326 | break; | |
8327 | case bfd_link_hash_indirect: | |
8328 | case bfd_link_hash_warning: | |
8329 | lh = lh->u.i.link; | |
8330 | /* @@FIXME ignoring warning for now */ | |
8331 | goto lookup; | |
8332 | case bfd_link_hash_new: | |
8333 | default: | |
8334 | abort (); | |
8335 | } | |
8336 | } | |
8337 | else | |
8338 | gp_found = 0; | |
8339 | } | |
8340 | /* end mips */ | |
8341 | for (parent = reloc_vector; *parent != (arelent *) NULL; | |
8342 | parent++) | |
8343 | { | |
8344 | char *error_message = (char *) NULL; | |
8345 | bfd_reloc_status_type r; | |
8346 | ||
8347 | /* Specific to MIPS: Deal with relocation types that require | |
8348 | knowing the gp of the output bfd. */ | |
8349 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
8350 | if (bfd_is_abs_section (sym->section) && abfd) | |
8351 | { | |
8352 | /* The special_function wouldn't get called anyways. */ | |
8353 | } | |
8354 | else if (!gp_found) | |
8355 | { | |
8356 | /* The gp isn't there; let the special function code | |
8357 | fall over on its own. */ | |
8358 | } | |
8359 | else if ((*parent)->howto->special_function | |
8360 | == _bfd_mips_elf_gprel16_reloc) | |
8361 | { | |
8362 | /* bypass special_function call */ | |
8363 | r = gprel16_with_gp (input_bfd, sym, *parent, input_section, | |
8364 | relocateable, (PTR) data, gp); | |
8365 | goto skip_bfd_perform_relocation; | |
8366 | } | |
8367 | /* end mips specific stuff */ | |
8368 | ||
8369 | r = bfd_perform_relocation (input_bfd, | |
8370 | *parent, | |
8371 | (PTR) data, | |
8372 | input_section, | |
8373 | relocateable ? abfd : (bfd *) NULL, | |
8374 | &error_message); | |
8375 | skip_bfd_perform_relocation: | |
8376 | ||
8377 | if (relocateable) | |
8378 | { | |
8379 | asection *os = input_section->output_section; | |
8380 | ||
8381 | /* A partial link, so keep the relocs */ | |
8382 | os->orelocation[os->reloc_count] = *parent; | |
8383 | os->reloc_count++; | |
8384 | } | |
8385 | ||
8386 | if (r != bfd_reloc_ok) | |
8387 | { | |
8388 | switch (r) | |
8389 | { | |
8390 | case bfd_reloc_undefined: | |
8391 | if (!((*link_info->callbacks->undefined_symbol) | |
8392 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
8393 | input_bfd, input_section, (*parent)->address))) | |
8394 | goto error_return; | |
8395 | break; | |
8396 | case bfd_reloc_dangerous: | |
8397 | BFD_ASSERT (error_message != (char *) NULL); | |
8398 | if (!((*link_info->callbacks->reloc_dangerous) | |
8399 | (link_info, error_message, input_bfd, input_section, | |
8400 | (*parent)->address))) | |
8401 | goto error_return; | |
8402 | break; | |
8403 | case bfd_reloc_overflow: | |
8404 | if (!((*link_info->callbacks->reloc_overflow) | |
8405 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
8406 | (*parent)->howto->name, (*parent)->addend, | |
8407 | input_bfd, input_section, (*parent)->address))) | |
8408 | goto error_return; | |
8409 | break; | |
8410 | case bfd_reloc_outofrange: | |
8411 | default: | |
8412 | abort (); | |
8413 | break; | |
8414 | } | |
8415 | ||
8416 | } | |
8417 | } | |
8418 | } | |
8419 | if (reloc_vector != NULL) | |
8420 | free (reloc_vector); | |
8421 | return data; | |
8422 | ||
8423 | error_return: | |
8424 | if (reloc_vector != NULL) | |
8425 | free (reloc_vector); | |
8426 | return NULL; | |
8427 | } | |
8428 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
8429 | elf32_mips_get_relocated_section_contents | |
8430 | \f | |
8431 | /* ECOFF swapping routines. These are used when dealing with the | |
8432 | .mdebug section, which is in the ECOFF debugging format. */ | |
8433 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = | |
8434 | { | |
8435 | /* Symbol table magic number. */ | |
8436 | magicSym, | |
8437 | /* Alignment of debugging information. E.g., 4. */ | |
8438 | 4, | |
8439 | /* Sizes of external symbolic information. */ | |
8440 | sizeof (struct hdr_ext), | |
8441 | sizeof (struct dnr_ext), | |
8442 | sizeof (struct pdr_ext), | |
8443 | sizeof (struct sym_ext), | |
8444 | sizeof (struct opt_ext), | |
8445 | sizeof (struct fdr_ext), | |
8446 | sizeof (struct rfd_ext), | |
8447 | sizeof (struct ext_ext), | |
8448 | /* Functions to swap in external symbolic data. */ | |
8449 | ecoff_swap_hdr_in, | |
8450 | ecoff_swap_dnr_in, | |
8451 | ecoff_swap_pdr_in, | |
8452 | ecoff_swap_sym_in, | |
8453 | ecoff_swap_opt_in, | |
8454 | ecoff_swap_fdr_in, | |
8455 | ecoff_swap_rfd_in, | |
8456 | ecoff_swap_ext_in, | |
8457 | _bfd_ecoff_swap_tir_in, | |
8458 | _bfd_ecoff_swap_rndx_in, | |
8459 | /* Functions to swap out external symbolic data. */ | |
8460 | ecoff_swap_hdr_out, | |
8461 | ecoff_swap_dnr_out, | |
8462 | ecoff_swap_pdr_out, | |
8463 | ecoff_swap_sym_out, | |
8464 | ecoff_swap_opt_out, | |
8465 | ecoff_swap_fdr_out, | |
8466 | ecoff_swap_rfd_out, | |
8467 | ecoff_swap_ext_out, | |
8468 | _bfd_ecoff_swap_tir_out, | |
8469 | _bfd_ecoff_swap_rndx_out, | |
8470 | /* Function to read in symbolic data. */ | |
8471 | _bfd_mips_elf_read_ecoff_info | |
8472 | }; | |
8473 | \f | |
8474 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec | |
8475 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
8476 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
8477 | #define TARGET_BIG_NAME "elf32-bigmips" | |
8478 | #define ELF_ARCH bfd_arch_mips | |
8479 | #define ELF_MACHINE_CODE EM_MIPS | |
8480 | ||
8481 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
8482 | a value of 0x1000, and we are compatible. */ | |
8483 | #define ELF_MAXPAGESIZE 0x1000 | |
8484 | ||
8485 | #define elf_backend_collect true | |
8486 | #define elf_backend_type_change_ok true | |
8487 | #define elf_backend_can_gc_sections true | |
3f830999 | 8488 | #define elf_info_to_howto mips_info_to_howto_rela |
252b5132 RH |
8489 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
8490 | #define elf_backend_sym_is_global mips_elf_sym_is_global | |
103186c6 MM |
8491 | #define elf_backend_object_p _bfd_mips_elf_object_p |
8492 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr | |
252b5132 RH |
8493 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
8494 | #define elf_backend_section_from_bfd_section \ | |
8495 | _bfd_mips_elf_section_from_bfd_section | |
103186c6 | 8496 | #define elf_backend_section_processing _bfd_mips_elf_section_processing |
252b5132 RH |
8497 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
8498 | #define elf_backend_additional_program_headers \ | |
103186c6 MM |
8499 | _bfd_mips_elf_additional_program_headers |
8500 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map | |
252b5132 RH |
8501 | #define elf_backend_final_write_processing \ |
8502 | _bfd_mips_elf_final_write_processing | |
8503 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap | |
103186c6 MM |
8504 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
8505 | #define elf_backend_create_dynamic_sections \ | |
8506 | _bfd_mips_elf_create_dynamic_sections | |
8507 | #define elf_backend_check_relocs _bfd_mips_elf_check_relocs | |
8508 | #define elf_backend_adjust_dynamic_symbol \ | |
8509 | _bfd_mips_elf_adjust_dynamic_symbol | |
8510 | #define elf_backend_always_size_sections \ | |
8511 | _bfd_mips_elf_always_size_sections | |
8512 | #define elf_backend_size_dynamic_sections \ | |
8513 | _bfd_mips_elf_size_dynamic_sections | |
8514 | #define elf_backend_relocate_section _bfd_mips_elf_relocate_section | |
8515 | #define elf_backend_link_output_symbol_hook \ | |
8516 | _bfd_mips_elf_link_output_symbol_hook | |
8517 | #define elf_backend_finish_dynamic_symbol \ | |
8518 | _bfd_mips_elf_finish_dynamic_symbol | |
8519 | #define elf_backend_finish_dynamic_sections \ | |
8520 | _bfd_mips_elf_finish_dynamic_sections | |
8521 | #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook | |
8522 | #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook | |
8523 | ||
8524 | #define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO) | |
8525 | #define elf_backend_plt_header_size 0 | |
252b5132 RH |
8526 | |
8527 | #define bfd_elf32_bfd_is_local_label_name \ | |
8528 | mips_elf_is_local_label_name | |
8529 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line | |
8530 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents | |
8531 | #define bfd_elf32_bfd_link_hash_table_create \ | |
103186c6 MM |
8532 | _bfd_mips_elf_link_hash_table_create |
8533 | #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link | |
252b5132 RH |
8534 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
8535 | _bfd_mips_elf_copy_private_bfd_data | |
8536 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
8537 | _bfd_mips_elf_merge_private_bfd_data | |
8538 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
8539 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
8540 | _bfd_mips_elf_print_private_bfd_data | |
252b5132 | 8541 | #include "elf32-target.h" |