Commit | Line | Data |
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efcbd82c | 1 | /* MIPS-specific support for 32-bit ELF |
3f0a7f7f | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
be3ccd9c | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
6 | <ian@cygnus.com>. | |
103186c6 MM |
7 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. |
8 | <mark@codesourcery.com> | |
f7cb7d68 UC |
9 | Traditional MIPS targets support added by Koundinya.K, Dansk Data |
10 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
252b5132 RH |
11 | |
12 | This file is part of BFD, the Binary File Descriptor library. | |
13 | ||
14 | This program is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; if not, write to the Free Software | |
26 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
27 | ||
28 | /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly | |
29 | different MIPS ELF from other targets. This matters when linking. | |
30 | This file supports both, switching at runtime. */ | |
31 | ||
32 | #include "bfd.h" | |
33 | #include "sysdep.h" | |
34 | #include "libbfd.h" | |
35 | #include "bfdlink.h" | |
36 | #include "genlink.h" | |
37 | #include "elf-bfd.h" | |
38 | #include "elf/mips.h" | |
39 | ||
40 | /* Get the ECOFF swapping routines. */ | |
41 | #include "coff/sym.h" | |
42 | #include "coff/symconst.h" | |
43 | #include "coff/internal.h" | |
44 | #include "coff/ecoff.h" | |
45 | #include "coff/mips.h" | |
23e2c83b | 46 | #define ECOFF_SIGNED_32 |
252b5132 RH |
47 | #include "ecoffswap.h" |
48 | ||
7403cb63 MM |
49 | /* This structure is used to hold .got information when linking. It |
50 | is stored in the tdata field of the bfd_elf_section_data structure. */ | |
51 | ||
38b1a46c NC |
52 | struct mips_got_info |
53 | { | |
7403cb63 MM |
54 | /* The global symbol in the GOT with the lowest index in the dynamic |
55 | symbol table. */ | |
56 | struct elf_link_hash_entry *global_gotsym; | |
b3be9b46 RH |
57 | /* The number of global .got entries. */ |
58 | unsigned int global_gotno; | |
7403cb63 MM |
59 | /* The number of local .got entries. */ |
60 | unsigned int local_gotno; | |
61 | /* The number of local .got entries we have used. */ | |
62 | unsigned int assigned_gotno; | |
63 | }; | |
64 | ||
65 | /* The MIPS ELF linker needs additional information for each symbol in | |
66 | the global hash table. */ | |
67 | ||
38b1a46c NC |
68 | struct mips_elf_link_hash_entry |
69 | { | |
7403cb63 MM |
70 | struct elf_link_hash_entry root; |
71 | ||
72 | /* External symbol information. */ | |
73 | EXTR esym; | |
74 | ||
a3c7651d | 75 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
be3ccd9c | 76 | this symbol. */ |
a3c7651d | 77 | unsigned int possibly_dynamic_relocs; |
7403cb63 | 78 | |
43917054 L |
79 | /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against |
80 | a readonly section. */ | |
81 | boolean readonly_reloc; | |
82 | ||
7403cb63 MM |
83 | /* The index of the first dynamic relocation (in the .rel.dyn |
84 | section) against this symbol. */ | |
85 | unsigned int min_dyn_reloc_index; | |
86 | ||
9117d219 NC |
87 | /* We must not create a stub for a symbol that has relocations |
88 | related to taking the function's address, i.e. any but | |
89 | R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition", | |
90 | p. 4-20. */ | |
91 | boolean no_fn_stub; | |
92 | ||
7403cb63 MM |
93 | /* If there is a stub that 32 bit functions should use to call this |
94 | 16 bit function, this points to the section containing the stub. */ | |
95 | asection *fn_stub; | |
96 | ||
97 | /* Whether we need the fn_stub; this is set if this symbol appears | |
98 | in any relocs other than a 16 bit call. */ | |
99 | boolean need_fn_stub; | |
100 | ||
101 | /* If there is a stub that 16 bit functions should use to call this | |
102 | 32 bit function, this points to the section containing the stub. */ | |
103 | asection *call_stub; | |
104 | ||
105 | /* This is like the call_stub field, but it is used if the function | |
106 | being called returns a floating point value. */ | |
107 | asection *call_fp_stub; | |
108 | }; | |
109 | ||
252b5132 RH |
110 | static bfd_reloc_status_type mips32_64bit_reloc |
111 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
112 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
113 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
c9b3cbf3 RH |
114 | static reloc_howto_type *mips_rtype_to_howto |
115 | PARAMS ((unsigned int)); | |
252b5132 RH |
116 | static void mips_info_to_howto_rel |
117 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
3f830999 MM |
118 | static void mips_info_to_howto_rela |
119 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
252b5132 RH |
120 | static void bfd_mips_elf32_swap_gptab_in |
121 | PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); | |
122 | static void bfd_mips_elf32_swap_gptab_out | |
123 | PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); | |
86033394 | 124 | #if 0 |
be3ccd9c | 125 | static void bfd_mips_elf_swap_msym_in |
c6142e5d | 126 | PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *)); |
86033394 | 127 | #endif |
c6142e5d MM |
128 | static void bfd_mips_elf_swap_msym_out |
129 | PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *)); | |
252b5132 | 130 | static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); |
252b5132 RH |
131 | static boolean mips_elf_create_procedure_table |
132 | PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *, | |
133 | struct ecoff_debug_info *)); | |
252b5132 | 134 | static INLINE int elf_mips_isa PARAMS ((flagword)); |
dc810e39 | 135 | static INLINE unsigned long elf_mips_mach PARAMS ((flagword)); |
103186c6 | 136 | static INLINE char* elf_mips_abi_name PARAMS ((bfd *)); |
252b5132 RH |
137 | static boolean mips_elf_is_local_label_name |
138 | PARAMS ((bfd *, const char *)); | |
139 | static struct bfd_hash_entry *mips_elf_link_hash_newfunc | |
140 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
252b5132 | 141 | static int gptab_compare PARAMS ((const void *, const void *)); |
252b5132 RH |
142 | static bfd_reloc_status_type mips16_jump_reloc |
143 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
144 | static bfd_reloc_status_type mips16_gprel_reloc | |
145 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
146 | static boolean mips_elf_create_compact_rel_section |
147 | PARAMS ((bfd *, struct bfd_link_info *)); | |
148 | static boolean mips_elf_create_got_section | |
149 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 RH |
150 | static bfd_reloc_status_type mips_elf_final_gp |
151 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); | |
152 | static bfd_byte *elf32_mips_get_relocated_section_contents | |
153 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
154 | bfd_byte *, boolean, asymbol **)); | |
be3ccd9c | 155 | static asection *mips_elf_create_msym_section |
c6142e5d | 156 | PARAMS ((bfd *)); |
be3ccd9c | 157 | static void mips_elf_irix6_finish_dynamic_symbol |
7403cb63 MM |
158 | PARAMS ((bfd *, const char *, Elf_Internal_Sym *)); |
159 | static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int)); | |
160 | static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int)); | |
161 | static bfd_vma mips_elf_high PARAMS ((bfd_vma)); | |
162 | static bfd_vma mips_elf_higher PARAMS ((bfd_vma)); | |
163 | static bfd_vma mips_elf_highest PARAMS ((bfd_vma)); | |
164 | static bfd_vma mips_elf_global_got_index | |
165 | PARAMS ((bfd *, struct elf_link_hash_entry *)); | |
166 | static bfd_vma mips_elf_local_got_index | |
167 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma)); | |
168 | static bfd_vma mips_elf_got_offset_from_index | |
169 | PARAMS ((bfd *, bfd *, bfd_vma)); | |
be3ccd9c | 170 | static boolean mips_elf_record_global_got_symbol |
7403cb63 MM |
171 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *, |
172 | struct mips_got_info *)); | |
173 | static bfd_vma mips_elf_got_page | |
174 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *)); | |
bb2d6cd7 | 175 | static const Elf_Internal_Rela *mips_elf_next_relocation |
be3ccd9c | 176 | PARAMS ((unsigned int, const Elf_Internal_Rela *, |
bb2d6cd7 | 177 | const Elf_Internal_Rela *)); |
7403cb63 MM |
178 | static bfd_reloc_status_type mips_elf_calculate_relocation |
179 | PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *, | |
103186c6 | 180 | const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *, |
197b9ca0 MM |
181 | Elf_Internal_Sym *, asection **, bfd_vma *, const char **, |
182 | boolean *)); | |
7403cb63 | 183 | static bfd_vma mips_elf_obtain_contents |
103186c6 | 184 | PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *)); |
197b9ca0 | 185 | static boolean mips_elf_perform_relocation |
be3ccd9c | 186 | PARAMS ((struct bfd_link_info *, reloc_howto_type *, |
e53bd91b | 187 | const Elf_Internal_Rela *, bfd_vma, |
197b9ca0 | 188 | bfd *, asection *, bfd_byte *, boolean)); |
7403cb63 | 189 | static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *)); |
be3ccd9c | 190 | static boolean mips_elf_sort_hash_table_f |
7403cb63 | 191 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); |
be3ccd9c | 192 | static boolean mips_elf_sort_hash_table |
b3be9b46 | 193 | PARAMS ((struct bfd_link_info *, unsigned long)); |
7403cb63 | 194 | static asection * mips_elf_got_section PARAMS ((bfd *)); |
be3ccd9c | 195 | static struct mips_got_info *mips_elf_got_info |
7403cb63 | 196 | PARAMS ((bfd *, asection **)); |
6387d602 | 197 | static boolean mips_elf_local_relocation_p |
b305ef96 | 198 | PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean)); |
be3ccd9c | 199 | static bfd_vma mips_elf_create_local_got_entry |
7403cb63 | 200 | PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma)); |
be3ccd9c | 201 | static bfd_vma mips_elf_got16_entry |
b305ef96 | 202 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean)); |
be3ccd9c | 203 | static boolean mips_elf_create_dynamic_relocation |
103186c6 | 204 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
7b1f1231 | 205 | struct mips_elf_link_hash_entry *, asection *, |
9117d219 | 206 | bfd_vma, bfd_vma *, asection *)); |
be3ccd9c | 207 | static void mips_elf_allocate_dynamic_relocations |
103186c6 | 208 | PARAMS ((bfd *, unsigned int)); |
be3ccd9c | 209 | static boolean mips_elf_stub_section_p |
197b9ca0 | 210 | PARAMS ((bfd *, asection *)); |
adb76a3e UC |
211 | static int sort_dynamic_relocs |
212 | PARAMS ((const void *, const void *)); | |
9e80ff3a | 213 | static void _bfd_mips_elf_hide_symbol |
e5094212 | 214 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean)); |
9e80ff3a L |
215 | static void _bfd_mips_elf_copy_indirect_symbol |
216 | PARAMS ((struct elf_link_hash_entry *, | |
217 | struct elf_link_hash_entry *)); | |
218 | static boolean _bfd_elf32_mips_grok_prstatus | |
219 | PARAMS ((bfd *, Elf_Internal_Note *)); | |
220 | static boolean _bfd_elf32_mips_grok_psinfo | |
221 | PARAMS ((bfd *, Elf_Internal_Note *)); | |
73d074b4 DJ |
222 | static boolean _bfd_elf32_mips_discard_info |
223 | PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *)); | |
224 | static boolean _bfd_elf32_mips_ignore_discarded_relocs | |
225 | PARAMS ((asection *)); | |
226 | static boolean _bfd_elf32_mips_write_section | |
227 | PARAMS ((bfd *, asection *, bfd_byte *)); | |
252b5132 | 228 | |
f7cb7d68 | 229 | extern const bfd_target bfd_elf32_tradbigmips_vec; |
fdbafa10 | 230 | extern const bfd_target bfd_elf32_tradlittlemips_vec; |
b3baf5d0 | 231 | #ifdef BFD64 |
fdbafa10 L |
232 | extern const bfd_target bfd_elf64_tradbigmips_vec; |
233 | extern const bfd_target bfd_elf64_tradlittlemips_vec; | |
b3baf5d0 | 234 | #endif |
f7cb7d68 | 235 | |
a94a7c1c | 236 | /* The level of IRIX compatibility we're striving for. */ |
252b5132 | 237 | |
a94a7c1c MM |
238 | typedef enum { |
239 | ict_none, | |
240 | ict_irix5, | |
241 | ict_irix6 | |
242 | } irix_compat_t; | |
243 | ||
adb76a3e UC |
244 | /* This will be used when we sort the dynamic relocation records. */ |
245 | static bfd *reldyn_sorting_bfd; | |
246 | ||
a94a7c1c MM |
247 | /* Nonzero if ABFD is using the N32 ABI. */ |
248 | ||
249 | #define ABI_N32_P(abfd) \ | |
250 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
251 | ||
fdbafa10 | 252 | /* Nonzero if ABFD is using the 64-bit ABI. */ |
5e38c3b8 MM |
253 | #define ABI_64_P(abfd) \ |
254 | ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0) | |
255 | ||
f7cb7d68 | 256 | /* Depending on the target vector we generate some version of Irix |
be3ccd9c | 257 | executables or "normal" MIPS ELF ABI executables. */ |
b3baf5d0 | 258 | #ifdef BFD64 |
a94a7c1c | 259 | #define IRIX_COMPAT(abfd) \ |
fdbafa10 L |
260 | (((abfd->xvec == &bfd_elf64_tradbigmips_vec) || \ |
261 | (abfd->xvec == &bfd_elf64_tradlittlemips_vec) || \ | |
262 | (abfd->xvec == &bfd_elf32_tradbigmips_vec) || \ | |
263 | (abfd->xvec == &bfd_elf32_tradlittlemips_vec)) ? ict_none : \ | |
f7cb7d68 | 264 | ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5)) |
b3baf5d0 NC |
265 | #else |
266 | #define IRIX_COMPAT(abfd) \ | |
267 | (((abfd->xvec == &bfd_elf32_tradbigmips_vec) || \ | |
268 | (abfd->xvec == &bfd_elf32_tradlittlemips_vec)) ? ict_none : \ | |
269 | ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5)) | |
270 | #endif | |
a94a7c1c | 271 | |
d75bc93d TS |
272 | #define NEWABI_P(abfd) (ABI_N32_P(abfd) || ABI_64_P(abfd)) |
273 | ||
4e8a9624 | 274 | /* Whether we are trying to be compatible with IRIX at all. */ |
a94a7c1c MM |
275 | #define SGI_COMPAT(abfd) \ |
276 | (IRIX_COMPAT (abfd) != ict_none) | |
252b5132 | 277 | |
c6142e5d MM |
278 | /* The name of the msym section. */ |
279 | #define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym" | |
280 | ||
303f629d MM |
281 | /* The name of the srdata section. */ |
282 | #define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata" | |
283 | ||
284 | /* The name of the options section. */ | |
285 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
286 | (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options") | |
287 | ||
288 | /* The name of the stub section. */ | |
289 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) \ | |
290 | (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub") | |
291 | ||
103186c6 MM |
292 | /* The name of the dynamic relocation section. */ |
293 | #define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn" | |
294 | ||
295 | /* The size of an external REL relocation. */ | |
296 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
297 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
298 | ||
299 | /* The size of an external dynamic table entry. */ | |
300 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
301 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
302 | ||
303 | /* The size of a GOT entry. */ | |
304 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
305 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
306 | ||
307 | /* The size of a symbol-table entry. */ | |
308 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
309 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
310 | ||
311 | /* The default alignment for sections, as a power of two. */ | |
312 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
313 | (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2) | |
314 | ||
315 | /* Get word-sized data. */ | |
316 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
317 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
318 | ||
319 | /* Put out word-sized data. */ | |
320 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
321 | (ABI_64_P (abfd) \ | |
322 | ? bfd_put_64 (abfd, val, ptr) \ | |
323 | : bfd_put_32 (abfd, val, ptr)) | |
324 | ||
325 | /* Add a dynamic symbol table-entry. */ | |
9ebbd33e | 326 | #ifdef BFD64 |
dc810e39 AM |
327 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
328 | (ABI_64_P (elf_hash_table (info)->dynobj) \ | |
329 | ? bfd_elf64_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val) \ | |
330 | : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val)) | |
9ebbd33e | 331 | #else |
dc810e39 AM |
332 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
333 | (ABI_64_P (elf_hash_table (info)->dynobj) \ | |
1e738b87 | 334 | ? (boolean) (abort (), false) \ |
dc810e39 | 335 | : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val)) |
9ebbd33e | 336 | #endif |
103186c6 | 337 | |
252b5132 RH |
338 | /* The number of local .got entries we reserve. */ |
339 | #define MIPS_RESERVED_GOTNO (2) | |
340 | ||
341 | /* Instructions which appear in a stub. For some reason the stub is | |
342 | slightly different on an SGI system. */ | |
343 | #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000) | |
103186c6 MM |
344 | #define STUB_LW(abfd) \ |
345 | (SGI_COMPAT (abfd) \ | |
346 | ? (ABI_64_P (abfd) \ | |
347 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
348 | : 0x8f998010) /* lw t9,0x8010(gp) */ \ | |
f7cb7d68 UC |
349 | : 0x8f998010) /* lw t9,0x8000(gp) */ |
350 | #define STUB_MOVE(abfd) \ | |
351 | (SGI_COMPAT (abfd) ? 0x03e07825 : 0x03e07821) /* move t7,ra */ | |
352 | #define STUB_JALR 0x0320f809 /* jal t9 */ | |
353 | #define STUB_LI16(abfd) \ | |
354 | (SGI_COMPAT (abfd) ? 0x34180000 : 0x24180000) /* ori t8,zero,0 */ | |
252b5132 RH |
355 | #define MIPS_FUNCTION_STUB_SIZE (16) |
356 | ||
357 | #if 0 | |
358 | /* We no longer try to identify particular sections for the .dynsym | |
359 | section. When we do, we wind up crashing if there are other random | |
360 | sections with relocations. */ | |
361 | ||
362 | /* Names of sections which appear in the .dynsym section in an Irix 5 | |
363 | executable. */ | |
364 | ||
38b1a46c NC |
365 | static const char * const mips_elf_dynsym_sec_names[] = |
366 | { | |
252b5132 RH |
367 | ".text", |
368 | ".init", | |
369 | ".fini", | |
370 | ".data", | |
371 | ".rodata", | |
372 | ".sdata", | |
373 | ".sbss", | |
374 | ".bss", | |
375 | NULL | |
376 | }; | |
377 | ||
378 | #define SIZEOF_MIPS_DYNSYM_SECNAMES \ | |
379 | (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) | |
380 | ||
381 | /* The number of entries in mips_elf_dynsym_sec_names which go in the | |
382 | text segment. */ | |
383 | ||
384 | #define MIPS_TEXT_DYNSYM_SECNO (3) | |
385 | ||
386 | #endif /* 0 */ | |
387 | ||
388 | /* The names of the runtime procedure table symbols used on Irix 5. */ | |
389 | ||
38b1a46c NC |
390 | static const char * const mips_elf_dynsym_rtproc_names[] = |
391 | { | |
252b5132 RH |
392 | "_procedure_table", |
393 | "_procedure_string_table", | |
394 | "_procedure_table_size", | |
395 | NULL | |
396 | }; | |
397 | ||
398 | /* These structures are used to generate the .compact_rel section on | |
399 | Irix 5. */ | |
400 | ||
38b1a46c NC |
401 | typedef struct |
402 | { | |
252b5132 RH |
403 | unsigned long id1; /* Always one? */ |
404 | unsigned long num; /* Number of compact relocation entries. */ | |
405 | unsigned long id2; /* Always two? */ | |
406 | unsigned long offset; /* The file offset of the first relocation. */ | |
407 | unsigned long reserved0; /* Zero? */ | |
408 | unsigned long reserved1; /* Zero? */ | |
409 | } Elf32_compact_rel; | |
410 | ||
38b1a46c NC |
411 | typedef struct |
412 | { | |
252b5132 RH |
413 | bfd_byte id1[4]; |
414 | bfd_byte num[4]; | |
415 | bfd_byte id2[4]; | |
416 | bfd_byte offset[4]; | |
417 | bfd_byte reserved0[4]; | |
418 | bfd_byte reserved1[4]; | |
419 | } Elf32_External_compact_rel; | |
420 | ||
38b1a46c NC |
421 | typedef struct |
422 | { | |
252b5132 | 423 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
be3ccd9c | 424 | unsigned int rtype : 4; /* Relocation types. See below. */ |
252b5132 RH |
425 | unsigned int dist2to : 8; |
426 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
427 | unsigned long konst; /* KONST field. See below. */ | |
428 | unsigned long vaddr; /* VADDR to be relocated. */ | |
429 | } Elf32_crinfo; | |
430 | ||
38b1a46c NC |
431 | typedef struct |
432 | { | |
252b5132 | 433 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
be3ccd9c | 434 | unsigned int rtype : 4; /* Relocation types. See below. */ |
252b5132 RH |
435 | unsigned int dist2to : 8; |
436 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
437 | unsigned long konst; /* KONST field. See below. */ | |
438 | } Elf32_crinfo2; | |
439 | ||
38b1a46c NC |
440 | typedef struct |
441 | { | |
252b5132 RH |
442 | bfd_byte info[4]; |
443 | bfd_byte konst[4]; | |
444 | bfd_byte vaddr[4]; | |
445 | } Elf32_External_crinfo; | |
446 | ||
38b1a46c NC |
447 | typedef struct |
448 | { | |
252b5132 RH |
449 | bfd_byte info[4]; |
450 | bfd_byte konst[4]; | |
451 | } Elf32_External_crinfo2; | |
452 | ||
453 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
454 | ||
455 | #define CRINFO_CTYPE (0x1) | |
456 | #define CRINFO_CTYPE_SH (31) | |
457 | #define CRINFO_RTYPE (0xf) | |
458 | #define CRINFO_RTYPE_SH (27) | |
459 | #define CRINFO_DIST2TO (0xff) | |
460 | #define CRINFO_DIST2TO_SH (19) | |
461 | #define CRINFO_RELVADDR (0x7ffff) | |
462 | #define CRINFO_RELVADDR_SH (0) | |
463 | ||
464 | /* A compact relocation info has long (3 words) or short (2 words) | |
465 | formats. A short format doesn't have VADDR field and relvaddr | |
466 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
467 | #define CRF_MIPS_LONG 1 | |
468 | #define CRF_MIPS_SHORT 0 | |
469 | ||
470 | /* There are 4 types of compact relocation at least. The value KONST | |
471 | has different meaning for each type: | |
472 | ||
473 | (type) (konst) | |
474 | CT_MIPS_REL32 Address in data | |
475 | CT_MIPS_WORD Address in word (XXX) | |
476 | CT_MIPS_GPHI_LO GP - vaddr | |
477 | CT_MIPS_JMPAD Address to jump | |
478 | */ | |
479 | ||
480 | #define CRT_MIPS_REL32 0xa | |
481 | #define CRT_MIPS_WORD 0xb | |
482 | #define CRT_MIPS_GPHI_LO 0xc | |
483 | #define CRT_MIPS_JMPAD 0xd | |
484 | ||
485 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
486 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
487 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
488 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
489 | ||
490 | static void bfd_elf32_swap_compact_rel_out | |
491 | PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *)); | |
492 | static void bfd_elf32_swap_crinfo_out | |
493 | PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *)); | |
494 | ||
3f830999 MM |
495 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
496 | from smaller values. Start with zero, widen, *then* decrement. */ | |
497 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
498 | ||
d75bc93d TS |
499 | /* The relocation table used for SHT_REL sections. */ |
500 | ||
501 | static reloc_howto_type elf_mips_howto_table_rel[] = | |
502 | { | |
503 | /* No relocation. */ | |
504 | HOWTO (R_MIPS_NONE, /* type */ | |
505 | 0, /* rightshift */ | |
506 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
507 | 0, /* bitsize */ | |
508 | false, /* pc_relative */ | |
509 | 0, /* bitpos */ | |
510 | complain_overflow_dont, /* complain_on_overflow */ | |
511 | bfd_elf_generic_reloc, /* special_function */ | |
512 | "R_MIPS_NONE", /* name */ | |
513 | false, /* partial_inplace */ | |
514 | 0, /* src_mask */ | |
515 | 0, /* dst_mask */ | |
516 | false), /* pcrel_offset */ | |
517 | ||
518 | /* 16 bit relocation. */ | |
519 | HOWTO (R_MIPS_16, /* type */ | |
520 | 0, /* rightshift */ | |
521 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
522 | 16, /* bitsize */ | |
523 | false, /* pc_relative */ | |
524 | 0, /* bitpos */ | |
525 | complain_overflow_signed, /* complain_on_overflow */ | |
526 | bfd_elf_generic_reloc, /* special_function */ | |
527 | "R_MIPS_16", /* name */ | |
528 | true, /* partial_inplace */ | |
529 | 0x0000ffff, /* src_mask */ | |
530 | 0x0000ffff, /* dst_mask */ | |
531 | false), /* pcrel_offset */ | |
532 | ||
533 | /* 32 bit relocation. */ | |
534 | HOWTO (R_MIPS_32, /* type */ | |
535 | 0, /* rightshift */ | |
536 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
537 | 32, /* bitsize */ | |
538 | false, /* pc_relative */ | |
539 | 0, /* bitpos */ | |
540 | complain_overflow_dont, /* complain_on_overflow */ | |
541 | bfd_elf_generic_reloc, /* special_function */ | |
542 | "R_MIPS_32", /* name */ | |
543 | true, /* partial_inplace */ | |
544 | 0xffffffff, /* src_mask */ | |
545 | 0xffffffff, /* dst_mask */ | |
546 | false), /* pcrel_offset */ | |
547 | ||
548 | /* 32 bit symbol relative relocation. */ | |
549 | HOWTO (R_MIPS_REL32, /* type */ | |
550 | 0, /* rightshift */ | |
551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
552 | 32, /* bitsize */ | |
553 | false, /* pc_relative */ | |
554 | 0, /* bitpos */ | |
555 | complain_overflow_dont, /* complain_on_overflow */ | |
556 | bfd_elf_generic_reloc, /* special_function */ | |
557 | "R_MIPS_REL32", /* name */ | |
558 | true, /* partial_inplace */ | |
559 | 0xffffffff, /* src_mask */ | |
560 | 0xffffffff, /* dst_mask */ | |
561 | false), /* pcrel_offset */ | |
562 | ||
563 | /* 26 bit jump address. */ | |
564 | HOWTO (R_MIPS_26, /* type */ | |
565 | 2, /* rightshift */ | |
566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 26, /* bitsize */ | |
568 | false, /* pc_relative */ | |
569 | 0, /* bitpos */ | |
570 | complain_overflow_dont, /* complain_on_overflow */ | |
571 | /* This needs complex overflow | |
572 | detection, because the upper four | |
573 | bits must match the PC + 4. */ | |
574 | bfd_elf_generic_reloc, /* special_function */ | |
575 | "R_MIPS_26", /* name */ | |
576 | true, /* partial_inplace */ | |
577 | 0x03ffffff, /* src_mask */ | |
578 | 0x03ffffff, /* dst_mask */ | |
579 | false), /* pcrel_offset */ | |
580 | ||
581 | /* High 16 bits of symbol value. */ | |
582 | HOWTO (R_MIPS_HI16, /* type */ | |
583 | 0, /* rightshift */ | |
584 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
585 | 16, /* bitsize */ | |
586 | false, /* pc_relative */ | |
587 | 0, /* bitpos */ | |
588 | complain_overflow_dont, /* complain_on_overflow */ | |
589 | _bfd_mips_elf_hi16_reloc, /* special_function */ | |
590 | "R_MIPS_HI16", /* name */ | |
591 | true, /* partial_inplace */ | |
592 | 0x0000ffff, /* src_mask */ | |
593 | 0x0000ffff, /* dst_mask */ | |
594 | false), /* pcrel_offset */ | |
595 | ||
596 | /* Low 16 bits of symbol value. */ | |
597 | HOWTO (R_MIPS_LO16, /* type */ | |
598 | 0, /* rightshift */ | |
599 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
600 | 16, /* bitsize */ | |
601 | false, /* pc_relative */ | |
602 | 0, /* bitpos */ | |
603 | complain_overflow_dont, /* complain_on_overflow */ | |
604 | _bfd_mips_elf_lo16_reloc, /* special_function */ | |
605 | "R_MIPS_LO16", /* name */ | |
606 | true, /* partial_inplace */ | |
607 | 0x0000ffff, /* src_mask */ | |
608 | 0x0000ffff, /* dst_mask */ | |
609 | false), /* pcrel_offset */ | |
610 | ||
611 | /* GP relative reference. */ | |
612 | HOWTO (R_MIPS_GPREL16, /* type */ | |
613 | 0, /* rightshift */ | |
614 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
615 | 16, /* bitsize */ | |
616 | false, /* pc_relative */ | |
617 | 0, /* bitpos */ | |
618 | complain_overflow_signed, /* complain_on_overflow */ | |
619 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
620 | "R_MIPS_GPREL16", /* name */ | |
621 | true, /* partial_inplace */ | |
622 | 0x0000ffff, /* src_mask */ | |
623 | 0x0000ffff, /* dst_mask */ | |
624 | false), /* pcrel_offset */ | |
625 | ||
626 | /* Reference to literal section. */ | |
627 | HOWTO (R_MIPS_LITERAL, /* type */ | |
628 | 0, /* rightshift */ | |
629 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
630 | 16, /* bitsize */ | |
631 | false, /* pc_relative */ | |
632 | 0, /* bitpos */ | |
633 | complain_overflow_signed, /* complain_on_overflow */ | |
634 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
635 | "R_MIPS_LITERAL", /* name */ | |
636 | true, /* partial_inplace */ | |
637 | 0x0000ffff, /* src_mask */ | |
638 | 0x0000ffff, /* dst_mask */ | |
639 | false), /* pcrel_offset */ | |
640 | ||
641 | /* Reference to global offset table. */ | |
642 | HOWTO (R_MIPS_GOT16, /* type */ | |
643 | 0, /* rightshift */ | |
644 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 16, /* bitsize */ | |
646 | false, /* pc_relative */ | |
647 | 0, /* bitpos */ | |
648 | complain_overflow_signed, /* complain_on_overflow */ | |
649 | _bfd_mips_elf_got16_reloc, /* special_function */ | |
650 | "R_MIPS_GOT16", /* name */ | |
651 | true, /* partial_inplace */ | |
652 | 0x0000ffff, /* src_mask */ | |
653 | 0x0000ffff, /* dst_mask */ | |
654 | false), /* pcrel_offset */ | |
655 | ||
656 | /* 16 bit PC relative reference. */ | |
657 | HOWTO (R_MIPS_PC16, /* type */ | |
658 | 0, /* rightshift */ | |
659 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
660 | 16, /* bitsize */ | |
661 | true, /* pc_relative */ | |
662 | 0, /* bitpos */ | |
663 | complain_overflow_signed, /* complain_on_overflow */ | |
664 | bfd_elf_generic_reloc, /* special_function */ | |
665 | "R_MIPS_PC16", /* name */ | |
666 | true, /* partial_inplace */ | |
667 | 0x0000ffff, /* src_mask */ | |
668 | 0x0000ffff, /* dst_mask */ | |
669 | true), /* pcrel_offset */ | |
670 | ||
671 | /* 16 bit call through global offset table. */ | |
672 | HOWTO (R_MIPS_CALL16, /* type */ | |
673 | 0, /* rightshift */ | |
674 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
675 | 16, /* bitsize */ | |
676 | false, /* pc_relative */ | |
677 | 0, /* bitpos */ | |
678 | complain_overflow_signed, /* complain_on_overflow */ | |
679 | bfd_elf_generic_reloc, /* special_function */ | |
680 | "R_MIPS_CALL16", /* name */ | |
681 | true, /* partial_inplace */ | |
682 | 0x0000ffff, /* src_mask */ | |
683 | 0x0000ffff, /* dst_mask */ | |
684 | false), /* pcrel_offset */ | |
685 | ||
686 | /* 32 bit GP relative reference. */ | |
687 | HOWTO (R_MIPS_GPREL32, /* type */ | |
688 | 0, /* rightshift */ | |
689 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
690 | 32, /* bitsize */ | |
691 | false, /* pc_relative */ | |
692 | 0, /* bitpos */ | |
693 | complain_overflow_dont, /* complain_on_overflow */ | |
694 | _bfd_mips_elf_gprel32_reloc, /* special_function */ | |
695 | "R_MIPS_GPREL32", /* name */ | |
696 | true, /* partial_inplace */ | |
697 | 0xffffffff, /* src_mask */ | |
698 | 0xffffffff, /* dst_mask */ | |
699 | false), /* pcrel_offset */ | |
700 | ||
701 | /* The remaining relocs are defined on Irix 5, although they are | |
702 | not defined by the ABI. */ | |
703 | EMPTY_HOWTO (13), | |
704 | EMPTY_HOWTO (14), | |
705 | EMPTY_HOWTO (15), | |
706 | ||
707 | /* A 5 bit shift field. */ | |
708 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
709 | 0, /* rightshift */ | |
710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 5, /* bitsize */ | |
712 | false, /* pc_relative */ | |
713 | 6, /* bitpos */ | |
714 | complain_overflow_bitfield, /* complain_on_overflow */ | |
715 | bfd_elf_generic_reloc, /* special_function */ | |
716 | "R_MIPS_SHIFT5", /* name */ | |
717 | true, /* partial_inplace */ | |
718 | 0x000007c0, /* src_mask */ | |
719 | 0x000007c0, /* dst_mask */ | |
720 | false), /* pcrel_offset */ | |
721 | ||
722 | /* A 6 bit shift field. */ | |
723 | /* FIXME: This is not handled correctly; a special function is | |
724 | needed to put the most significant bit in the right place. */ | |
725 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
726 | 0, /* rightshift */ | |
727 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
728 | 6, /* bitsize */ | |
729 | false, /* pc_relative */ | |
730 | 6, /* bitpos */ | |
731 | complain_overflow_bitfield, /* complain_on_overflow */ | |
732 | bfd_elf_generic_reloc, /* special_function */ | |
733 | "R_MIPS_SHIFT6", /* name */ | |
734 | true, /* partial_inplace */ | |
735 | 0x000007c4, /* src_mask */ | |
736 | 0x000007c4, /* dst_mask */ | |
737 | false), /* pcrel_offset */ | |
738 | ||
739 | /* A 64 bit relocation. */ | |
740 | HOWTO (R_MIPS_64, /* type */ | |
741 | 0, /* rightshift */ | |
742 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 64, /* bitsize */ | |
744 | false, /* pc_relative */ | |
745 | 0, /* bitpos */ | |
746 | complain_overflow_dont, /* complain_on_overflow */ | |
747 | mips32_64bit_reloc, /* special_function */ | |
748 | "R_MIPS_64", /* name */ | |
749 | true, /* partial_inplace */ | |
750 | MINUS_ONE, /* src_mask */ | |
751 | MINUS_ONE, /* dst_mask */ | |
752 | false), /* pcrel_offset */ | |
753 | ||
754 | /* Displacement in the global offset table. */ | |
755 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
756 | 0, /* rightshift */ | |
757 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 16, /* bitsize */ | |
759 | false, /* pc_relative */ | |
760 | 0, /* bitpos */ | |
761 | complain_overflow_signed, /* complain_on_overflow */ | |
762 | bfd_elf_generic_reloc, /* special_function */ | |
763 | "R_MIPS_GOT_DISP", /* name */ | |
764 | true, /* partial_inplace */ | |
765 | 0x0000ffff, /* src_mask */ | |
766 | 0x0000ffff, /* dst_mask */ | |
767 | false), /* pcrel_offset */ | |
768 | ||
769 | /* Displacement to page pointer in the global offset table. */ | |
770 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
771 | 0, /* rightshift */ | |
772 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 16, /* bitsize */ | |
774 | false, /* pc_relative */ | |
775 | 0, /* bitpos */ | |
776 | complain_overflow_signed, /* complain_on_overflow */ | |
777 | bfd_elf_generic_reloc, /* special_function */ | |
778 | "R_MIPS_GOT_PAGE", /* name */ | |
779 | true, /* partial_inplace */ | |
780 | 0x0000ffff, /* src_mask */ | |
781 | 0x0000ffff, /* dst_mask */ | |
782 | false), /* pcrel_offset */ | |
783 | ||
784 | /* Offset from page pointer in the global offset table. */ | |
785 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
786 | 0, /* rightshift */ | |
787 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
788 | 16, /* bitsize */ | |
789 | false, /* pc_relative */ | |
790 | 0, /* bitpos */ | |
791 | complain_overflow_signed, /* complain_on_overflow */ | |
792 | bfd_elf_generic_reloc, /* special_function */ | |
793 | "R_MIPS_GOT_OFST", /* name */ | |
794 | true, /* partial_inplace */ | |
795 | 0x0000ffff, /* src_mask */ | |
796 | 0x0000ffff, /* dst_mask */ | |
797 | false), /* pcrel_offset */ | |
798 | ||
799 | /* High 16 bits of displacement in global offset table. */ | |
800 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
801 | 0, /* rightshift */ | |
802 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
803 | 16, /* bitsize */ | |
804 | false, /* pc_relative */ | |
805 | 0, /* bitpos */ | |
806 | complain_overflow_dont, /* complain_on_overflow */ | |
807 | bfd_elf_generic_reloc, /* special_function */ | |
808 | "R_MIPS_GOT_HI16", /* name */ | |
809 | true, /* partial_inplace */ | |
810 | 0x0000ffff, /* src_mask */ | |
811 | 0x0000ffff, /* dst_mask */ | |
812 | false), /* pcrel_offset */ | |
813 | ||
814 | /* Low 16 bits of displacement in global offset table. */ | |
815 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
816 | 0, /* rightshift */ | |
817 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
818 | 16, /* bitsize */ | |
819 | false, /* pc_relative */ | |
820 | 0, /* bitpos */ | |
821 | complain_overflow_dont, /* complain_on_overflow */ | |
822 | bfd_elf_generic_reloc, /* special_function */ | |
823 | "R_MIPS_GOT_LO16", /* name */ | |
824 | true, /* partial_inplace */ | |
825 | 0x0000ffff, /* src_mask */ | |
826 | 0x0000ffff, /* dst_mask */ | |
827 | false), /* pcrel_offset */ | |
828 | ||
829 | /* 64 bit subtraction. Used in the N32 ABI. */ | |
830 | HOWTO (R_MIPS_SUB, /* type */ | |
831 | 0, /* rightshift */ | |
832 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
833 | 64, /* bitsize */ | |
834 | false, /* pc_relative */ | |
835 | 0, /* bitpos */ | |
836 | complain_overflow_dont, /* complain_on_overflow */ | |
837 | bfd_elf_generic_reloc, /* special_function */ | |
838 | "R_MIPS_SUB", /* name */ | |
839 | true, /* partial_inplace */ | |
840 | MINUS_ONE, /* src_mask */ | |
841 | MINUS_ONE, /* dst_mask */ | |
842 | false), /* pcrel_offset */ | |
843 | ||
844 | /* Used to cause the linker to insert and delete instructions? */ | |
845 | EMPTY_HOWTO (R_MIPS_INSERT_A), | |
846 | EMPTY_HOWTO (R_MIPS_INSERT_B), | |
847 | EMPTY_HOWTO (R_MIPS_DELETE), | |
848 | ||
849 | /* Get the higher value of a 64 bit addend. */ | |
850 | HOWTO (R_MIPS_HIGHER, /* type */ | |
851 | 0, /* rightshift */ | |
852 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 16, /* bitsize */ | |
854 | false, /* pc_relative */ | |
855 | 0, /* bitpos */ | |
856 | complain_overflow_dont, /* complain_on_overflow */ | |
857 | bfd_elf_generic_reloc, /* special_function */ | |
858 | "R_MIPS_HIGHER", /* name */ | |
859 | true, /* partial_inplace */ | |
860 | 0x0000ffff, /* src_mask */ | |
861 | 0x0000ffff, /* dst_mask */ | |
862 | false), /* pcrel_offset */ | |
863 | ||
864 | /* Get the highest value of a 64 bit addend. */ | |
865 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
866 | 0, /* rightshift */ | |
867 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 16, /* bitsize */ | |
869 | false, /* pc_relative */ | |
870 | 0, /* bitpos */ | |
871 | complain_overflow_dont, /* complain_on_overflow */ | |
872 | bfd_elf_generic_reloc, /* special_function */ | |
873 | "R_MIPS_HIGHEST", /* name */ | |
874 | true, /* partial_inplace */ | |
875 | 0x0000ffff, /* src_mask */ | |
876 | 0x0000ffff, /* dst_mask */ | |
877 | false), /* pcrel_offset */ | |
878 | ||
879 | /* High 16 bits of displacement in global offset table. */ | |
880 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
881 | 0, /* rightshift */ | |
882 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
883 | 16, /* bitsize */ | |
884 | false, /* pc_relative */ | |
885 | 0, /* bitpos */ | |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
887 | bfd_elf_generic_reloc, /* special_function */ | |
888 | "R_MIPS_CALL_HI16", /* name */ | |
889 | true, /* partial_inplace */ | |
890 | 0x0000ffff, /* src_mask */ | |
891 | 0x0000ffff, /* dst_mask */ | |
892 | false), /* pcrel_offset */ | |
893 | ||
894 | /* Low 16 bits of displacement in global offset table. */ | |
895 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
896 | 0, /* rightshift */ | |
897 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
898 | 16, /* bitsize */ | |
899 | false, /* pc_relative */ | |
900 | 0, /* bitpos */ | |
901 | complain_overflow_dont, /* complain_on_overflow */ | |
902 | bfd_elf_generic_reloc, /* special_function */ | |
903 | "R_MIPS_CALL_LO16", /* name */ | |
904 | true, /* partial_inplace */ | |
905 | 0x0000ffff, /* src_mask */ | |
906 | 0x0000ffff, /* dst_mask */ | |
907 | false), /* pcrel_offset */ | |
908 | ||
909 | /* Section displacement. */ | |
910 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
911 | 0, /* rightshift */ | |
912 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
913 | 32, /* bitsize */ | |
914 | false, /* pc_relative */ | |
915 | 0, /* bitpos */ | |
916 | complain_overflow_dont, /* complain_on_overflow */ | |
917 | bfd_elf_generic_reloc, /* special_function */ | |
918 | "R_MIPS_SCN_DISP", /* name */ | |
919 | true, /* partial_inplace */ | |
920 | 0xffffffff, /* src_mask */ | |
921 | 0xffffffff, /* dst_mask */ | |
922 | false), /* pcrel_offset */ | |
923 | ||
924 | EMPTY_HOWTO (R_MIPS_REL16), | |
925 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
926 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
927 | EMPTY_HOWTO (R_MIPS_RELGOT), | |
928 | ||
929 | /* Protected jump conversion. This is an optimization hint. No | |
930 | relocation is required for correctness. */ | |
931 | HOWTO (R_MIPS_JALR, /* type */ | |
932 | 0, /* rightshift */ | |
933 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
934 | 32, /* bitsize */ | |
935 | false, /* pc_relative */ | |
936 | 0, /* bitpos */ | |
937 | complain_overflow_dont, /* complain_on_overflow */ | |
938 | bfd_elf_generic_reloc, /* special_function */ | |
939 | "R_MIPS_JALR", /* name */ | |
940 | false, /* partial_inplace */ | |
941 | 0x00000000, /* src_mask */ | |
942 | 0x00000000, /* dst_mask */ | |
943 | false), /* pcrel_offset */ | |
944 | }; | |
945 | ||
946 | /* The relocation table used for SHT_RELA sections. */ | |
947 | ||
948 | static reloc_howto_type elf_mips_howto_table_rela[] = | |
38b1a46c | 949 | { |
252b5132 RH |
950 | /* No relocation. */ |
951 | HOWTO (R_MIPS_NONE, /* type */ | |
952 | 0, /* rightshift */ | |
953 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 0, /* bitsize */ | |
955 | false, /* pc_relative */ | |
956 | 0, /* bitpos */ | |
957 | complain_overflow_dont, /* complain_on_overflow */ | |
958 | bfd_elf_generic_reloc, /* special_function */ | |
959 | "R_MIPS_NONE", /* name */ | |
960 | false, /* partial_inplace */ | |
961 | 0, /* src_mask */ | |
962 | 0, /* dst_mask */ | |
963 | false), /* pcrel_offset */ | |
964 | ||
965 | /* 16 bit relocation. */ | |
966 | HOWTO (R_MIPS_16, /* type */ | |
967 | 0, /* rightshift */ | |
d75bc93d | 968 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
969 | 16, /* bitsize */ |
970 | false, /* pc_relative */ | |
971 | 0, /* bitpos */ | |
d75bc93d | 972 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
973 | bfd_elf_generic_reloc, /* special_function */ |
974 | "R_MIPS_16", /* name */ | |
d75bc93d TS |
975 | false, /* partial_inplace */ |
976 | 0, /* src_mask */ | |
977 | 0x0000, /* dst_mask */ | |
252b5132 RH |
978 | false), /* pcrel_offset */ |
979 | ||
980 | /* 32 bit relocation. */ | |
981 | HOWTO (R_MIPS_32, /* type */ | |
982 | 0, /* rightshift */ | |
983 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 32, /* bitsize */ | |
985 | false, /* pc_relative */ | |
986 | 0, /* bitpos */ | |
7e766c3b | 987 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
988 | bfd_elf_generic_reloc, /* special_function */ |
989 | "R_MIPS_32", /* name */ | |
d75bc93d TS |
990 | false, /* partial_inplace */ |
991 | 0, /* src_mask */ | |
252b5132 RH |
992 | 0xffffffff, /* dst_mask */ |
993 | false), /* pcrel_offset */ | |
994 | ||
995 | /* 32 bit symbol relative relocation. */ | |
996 | HOWTO (R_MIPS_REL32, /* type */ | |
997 | 0, /* rightshift */ | |
998 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 32, /* bitsize */ | |
1000 | false, /* pc_relative */ | |
1001 | 0, /* bitpos */ | |
7e766c3b | 1002 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
1003 | bfd_elf_generic_reloc, /* special_function */ |
1004 | "R_MIPS_REL32", /* name */ | |
d75bc93d TS |
1005 | false, /* partial_inplace */ |
1006 | 0, /* src_mask */ | |
252b5132 RH |
1007 | 0xffffffff, /* dst_mask */ |
1008 | false), /* pcrel_offset */ | |
1009 | ||
062e2358 | 1010 | /* 26 bit jump address. */ |
252b5132 RH |
1011 | HOWTO (R_MIPS_26, /* type */ |
1012 | 2, /* rightshift */ | |
1013 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 26, /* bitsize */ | |
1015 | false, /* pc_relative */ | |
1016 | 0, /* bitpos */ | |
1017 | complain_overflow_dont, /* complain_on_overflow */ | |
d75bc93d TS |
1018 | /* This needs complex overflow |
1019 | detection, because the upper 36 | |
9117d219 | 1020 | bits must match the PC + 4. */ |
252b5132 RH |
1021 | bfd_elf_generic_reloc, /* special_function */ |
1022 | "R_MIPS_26", /* name */ | |
d75bc93d TS |
1023 | false, /* partial_inplace */ |
1024 | 0, /* src_mask */ | |
1025 | 0x03ffffff, /* dst_mask */ | |
252b5132 RH |
1026 | false), /* pcrel_offset */ |
1027 | ||
d75bc93d | 1028 | /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for 64 bit REL. */ |
252b5132 RH |
1029 | /* High 16 bits of symbol value. */ |
1030 | HOWTO (R_MIPS_HI16, /* type */ | |
1031 | 0, /* rightshift */ | |
1032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1033 | 16, /* bitsize */ | |
1034 | false, /* pc_relative */ | |
1035 | 0, /* bitpos */ | |
1036 | complain_overflow_dont, /* complain_on_overflow */ | |
d75bc93d | 1037 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 1038 | "R_MIPS_HI16", /* name */ |
d75bc93d TS |
1039 | false, /* partial_inplace */ |
1040 | 0, /* src_mask */ | |
1041 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
1042 | false), /* pcrel_offset */ |
1043 | ||
1044 | /* Low 16 bits of symbol value. */ | |
1045 | HOWTO (R_MIPS_LO16, /* type */ | |
1046 | 0, /* rightshift */ | |
1047 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1048 | 16, /* bitsize */ | |
1049 | false, /* pc_relative */ | |
1050 | 0, /* bitpos */ | |
1051 | complain_overflow_dont, /* complain_on_overflow */ | |
d75bc93d | 1052 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 1053 | "R_MIPS_LO16", /* name */ |
d75bc93d TS |
1054 | false, /* partial_inplace */ |
1055 | 0, /* src_mask */ | |
1056 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
1057 | false), /* pcrel_offset */ |
1058 | ||
1059 | /* GP relative reference. */ | |
1060 | HOWTO (R_MIPS_GPREL16, /* type */ | |
1061 | 0, /* rightshift */ | |
1062 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1063 | 16, /* bitsize */ | |
1064 | false, /* pc_relative */ | |
1065 | 0, /* bitpos */ | |
1066 | complain_overflow_signed, /* complain_on_overflow */ | |
1067 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
1068 | "R_MIPS_GPREL16", /* name */ | |
d75bc93d TS |
1069 | false, /* partial_inplace */ |
1070 | 0, /* src_mask */ | |
1071 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
1072 | false), /* pcrel_offset */ |
1073 | ||
1074 | /* Reference to literal section. */ | |
1075 | HOWTO (R_MIPS_LITERAL, /* type */ | |
1076 | 0, /* rightshift */ | |
1077 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1078 | 16, /* bitsize */ | |
1079 | false, /* pc_relative */ | |
1080 | 0, /* bitpos */ | |
1081 | complain_overflow_signed, /* complain_on_overflow */ | |
1082 | _bfd_mips_elf_gprel16_reloc, /* special_function */ | |
1083 | "R_MIPS_LITERAL", /* name */ | |
d75bc93d TS |
1084 | false, /* partial_inplace */ |
1085 | 0, /* src_mask */ | |
1086 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
1087 | false), /* pcrel_offset */ |
1088 | ||
1089 | /* Reference to global offset table. */ | |
d75bc93d | 1090 | /* FIXME: This is not handled correctly. */ |
252b5132 RH |
1091 | HOWTO (R_MIPS_GOT16, /* type */ |
1092 | 0, /* rightshift */ | |
1093 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1094 | 16, /* bitsize */ | |
1095 | false, /* pc_relative */ | |
1096 | 0, /* bitpos */ | |
1097 | complain_overflow_signed, /* complain_on_overflow */ | |
d75bc93d | 1098 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 RH |
1099 | "R_MIPS_GOT16", /* name */ |
1100 | false, /* partial_inplace */ | |
d75bc93d TS |
1101 | 0, /* src_mask */ |
1102 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
1103 | false), /* pcrel_offset */ |
1104 | ||
1105 | /* 16 bit PC relative reference. */ | |
1106 | HOWTO (R_MIPS_PC16, /* type */ | |
1107 | 0, /* rightshift */ | |
1108 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1109 | 16, /* bitsize */ | |
1110 | true, /* pc_relative */ | |
1111 | 0, /* bitpos */ | |
1112 | complain_overflow_signed, /* complain_on_overflow */ | |
1113 | bfd_elf_generic_reloc, /* special_function */ | |
1114 | "R_MIPS_PC16", /* name */ | |
d75bc93d TS |
1115 | false, /* partial_inplace */ |
1116 | 0, /* src_mask */ | |
1117 | 0x0000ffff, /* dst_mask */ | |
bb2d6cd7 | 1118 | true), /* pcrel_offset */ |
252b5132 RH |
1119 | |
1120 | /* 16 bit call through global offset table. */ | |
d75bc93d | 1121 | /* FIXME: This is not handled correctly. */ |
252b5132 RH |
1122 | HOWTO (R_MIPS_CALL16, /* type */ |
1123 | 0, /* rightshift */ | |
1124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1125 | 16, /* bitsize */ | |
1126 | false, /* pc_relative */ | |
1127 | 0, /* bitpos */ | |
1128 | complain_overflow_signed, /* complain_on_overflow */ | |
1129 | bfd_elf_generic_reloc, /* special_function */ | |
1130 | "R_MIPS_CALL16", /* name */ | |
1131 | false, /* partial_inplace */ | |
d75bc93d TS |
1132 | 0, /* src_mask */ |
1133 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
1134 | false), /* pcrel_offset */ |
1135 | ||
1136 | /* 32 bit GP relative reference. */ | |
1137 | HOWTO (R_MIPS_GPREL32, /* type */ | |
1138 | 0, /* rightshift */ | |
1139 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1140 | 32, /* bitsize */ | |
1141 | false, /* pc_relative */ | |
1142 | 0, /* bitpos */ | |
7e766c3b | 1143 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
1144 | _bfd_mips_elf_gprel32_reloc, /* special_function */ |
1145 | "R_MIPS_GPREL32", /* name */ | |
d75bc93d TS |
1146 | false, /* partial_inplace */ |
1147 | 0, /* src_mask */ | |
252b5132 RH |
1148 | 0xffffffff, /* dst_mask */ |
1149 | false), /* pcrel_offset */ | |
1150 | ||
d75bc93d TS |
1151 | EMPTY_HOWTO (13), |
1152 | EMPTY_HOWTO (14), | |
1153 | EMPTY_HOWTO (15), | |
252b5132 RH |
1154 | |
1155 | /* A 5 bit shift field. */ | |
1156 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
1157 | 0, /* rightshift */ | |
1158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1159 | 5, /* bitsize */ | |
1160 | false, /* pc_relative */ | |
1161 | 6, /* bitpos */ | |
1162 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1163 | bfd_elf_generic_reloc, /* special_function */ | |
1164 | "R_MIPS_SHIFT5", /* name */ | |
d75bc93d TS |
1165 | false, /* partial_inplace */ |
1166 | 0, /* src_mask */ | |
252b5132 RH |
1167 | 0x000007c0, /* dst_mask */ |
1168 | false), /* pcrel_offset */ | |
1169 | ||
1170 | /* A 6 bit shift field. */ | |
d75bc93d | 1171 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1172 | HOWTO (R_MIPS_SHIFT6, /* type */ |
1173 | 0, /* rightshift */ | |
1174 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1175 | 6, /* bitsize */ | |
1176 | false, /* pc_relative */ | |
1177 | 6, /* bitpos */ | |
1178 | complain_overflow_bitfield, /* complain_on_overflow */ | |
d75bc93d | 1179 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 1180 | "R_MIPS_SHIFT6", /* name */ |
d75bc93d TS |
1181 | false, /* partial_inplace */ |
1182 | 0, /* src_mask */ | |
252b5132 RH |
1183 | 0x000007c4, /* dst_mask */ |
1184 | false), /* pcrel_offset */ | |
1185 | ||
d75bc93d | 1186 | /* 64 bit relocation. */ |
252b5132 RH |
1187 | HOWTO (R_MIPS_64, /* type */ |
1188 | 0, /* rightshift */ | |
a3c7651d MM |
1189 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
1190 | 64, /* bitsize */ | |
252b5132 RH |
1191 | false, /* pc_relative */ |
1192 | 0, /* bitpos */ | |
7e766c3b | 1193 | complain_overflow_dont, /* complain_on_overflow */ |
d75bc93d | 1194 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 1195 | "R_MIPS_64", /* name */ |
d75bc93d TS |
1196 | false, /* partial_inplace */ |
1197 | 0, /* src_mask */ | |
a3c7651d | 1198 | MINUS_ONE, /* dst_mask */ |
252b5132 RH |
1199 | false), /* pcrel_offset */ |
1200 | ||
1201 | /* Displacement in the global offset table. */ | |
d75bc93d | 1202 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1203 | HOWTO (R_MIPS_GOT_DISP, /* type */ |
1204 | 0, /* rightshift */ | |
1205 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1206 | 16, /* bitsize */ | |
1207 | false, /* pc_relative */ | |
1208 | 0, /* bitpos */ | |
7e766c3b | 1209 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1210 | bfd_elf_generic_reloc, /* special_function */ |
1211 | "R_MIPS_GOT_DISP", /* name */ | |
d75bc93d TS |
1212 | false, /* partial_inplace */ |
1213 | 0, /* src_mask */ | |
252b5132 RH |
1214 | 0x0000ffff, /* dst_mask */ |
1215 | false), /* pcrel_offset */ | |
1216 | ||
1217 | /* Displacement to page pointer in the global offset table. */ | |
d75bc93d | 1218 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1219 | HOWTO (R_MIPS_GOT_PAGE, /* type */ |
1220 | 0, /* rightshift */ | |
1221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1222 | 16, /* bitsize */ | |
1223 | false, /* pc_relative */ | |
1224 | 0, /* bitpos */ | |
7e766c3b | 1225 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1226 | bfd_elf_generic_reloc, /* special_function */ |
1227 | "R_MIPS_GOT_PAGE", /* name */ | |
d75bc93d TS |
1228 | false, /* partial_inplace */ |
1229 | 0, /* src_mask */ | |
252b5132 RH |
1230 | 0x0000ffff, /* dst_mask */ |
1231 | false), /* pcrel_offset */ | |
1232 | ||
1233 | /* Offset from page pointer in the global offset table. */ | |
d75bc93d | 1234 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1235 | HOWTO (R_MIPS_GOT_OFST, /* type */ |
1236 | 0, /* rightshift */ | |
1237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1238 | 16, /* bitsize */ | |
1239 | false, /* pc_relative */ | |
1240 | 0, /* bitpos */ | |
7e766c3b | 1241 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1242 | bfd_elf_generic_reloc, /* special_function */ |
1243 | "R_MIPS_GOT_OFST", /* name */ | |
d75bc93d TS |
1244 | false, /* partial_inplace */ |
1245 | 0, /* src_mask */ | |
252b5132 RH |
1246 | 0x0000ffff, /* dst_mask */ |
1247 | false), /* pcrel_offset */ | |
1248 | ||
1249 | /* High 16 bits of displacement in global offset table. */ | |
d75bc93d | 1250 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1251 | HOWTO (R_MIPS_GOT_HI16, /* type */ |
1252 | 0, /* rightshift */ | |
1253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 16, /* bitsize */ | |
1255 | false, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | bfd_elf_generic_reloc, /* special_function */ | |
1259 | "R_MIPS_GOT_HI16", /* name */ | |
d75bc93d TS |
1260 | false, /* partial_inplace */ |
1261 | 0, /* src_mask */ | |
252b5132 RH |
1262 | 0x0000ffff, /* dst_mask */ |
1263 | false), /* pcrel_offset */ | |
1264 | ||
1265 | /* Low 16 bits of displacement in global offset table. */ | |
d75bc93d | 1266 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1267 | HOWTO (R_MIPS_GOT_LO16, /* type */ |
1268 | 0, /* rightshift */ | |
1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 16, /* bitsize */ | |
1271 | false, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_dont, /* complain_on_overflow */ | |
1274 | bfd_elf_generic_reloc, /* special_function */ | |
1275 | "R_MIPS_GOT_LO16", /* name */ | |
d75bc93d TS |
1276 | false, /* partial_inplace */ |
1277 | 0, /* src_mask */ | |
252b5132 RH |
1278 | 0x0000ffff, /* dst_mask */ |
1279 | false), /* pcrel_offset */ | |
1280 | ||
d75bc93d TS |
1281 | /* 64 bit substraction. */ |
1282 | /* FIXME: Not handled correctly. */ | |
3f830999 MM |
1283 | HOWTO (R_MIPS_SUB, /* type */ |
1284 | 0, /* rightshift */ | |
1285 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 64, /* bitsize */ | |
1287 | false, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
7e766c3b | 1289 | complain_overflow_dont, /* complain_on_overflow */ |
3f830999 MM |
1290 | bfd_elf_generic_reloc, /* special_function */ |
1291 | "R_MIPS_SUB", /* name */ | |
d75bc93d TS |
1292 | false, /* partial_inplace */ |
1293 | 0, /* src_mask */ | |
3f830999 MM |
1294 | MINUS_ONE, /* dst_mask */ |
1295 | false), /* pcrel_offset */ | |
252b5132 | 1296 | |
d75bc93d TS |
1297 | /* Insert the addend as an instruction. */ |
1298 | /* FIXME: Not handled correctly. */ | |
1299 | HOWTO (R_MIPS_INSERT_A, /* type */ | |
1300 | 0, /* rightshift */ | |
1301 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1302 | 32, /* bitsize */ | |
1303 | false, /* pc_relative */ | |
1304 | 0, /* bitpos */ | |
1305 | complain_overflow_dont, /* complain_on_overflow */ | |
1306 | bfd_elf_generic_reloc, /* special_function */ | |
1307 | "R_MIPS_INSERT_A", /* name */ | |
1308 | false, /* partial_inplace */ | |
1309 | 0, /* src_mask */ | |
1310 | 0xffffffff, /* dst_mask */ | |
1311 | false), /* pcrel_offset */ | |
1312 | ||
1313 | /* Insert the addend as an instruction, and change all relocations | |
1314 | to refer to the old instruction at the address. */ | |
1315 | /* FIXME: Not handled correctly. */ | |
1316 | HOWTO (R_MIPS_INSERT_B, /* type */ | |
1317 | 0, /* rightshift */ | |
1318 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1319 | 32, /* bitsize */ | |
1320 | false, /* pc_relative */ | |
1321 | 0, /* bitpos */ | |
1322 | complain_overflow_dont, /* complain_on_overflow */ | |
1323 | bfd_elf_generic_reloc, /* special_function */ | |
1324 | "R_MIPS_INSERT_B", /* name */ | |
1325 | false, /* partial_inplace */ | |
1326 | 0, /* src_mask */ | |
1327 | 0xffffffff, /* dst_mask */ | |
1328 | false), /* pcrel_offset */ | |
1329 | ||
1330 | /* Delete a 32 bit instruction. */ | |
1331 | /* FIXME: Not handled correctly. */ | |
1332 | HOWTO (R_MIPS_DELETE, /* type */ | |
1333 | 0, /* rightshift */ | |
1334 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1335 | 32, /* bitsize */ | |
1336 | false, /* pc_relative */ | |
1337 | 0, /* bitpos */ | |
1338 | complain_overflow_dont, /* complain_on_overflow */ | |
1339 | bfd_elf_generic_reloc, /* special_function */ | |
1340 | "R_MIPS_DELETE", /* name */ | |
1341 | false, /* partial_inplace */ | |
1342 | 0, /* src_mask */ | |
1343 | 0xffffffff, /* dst_mask */ | |
1344 | false), /* pcrel_offset */ | |
252b5132 | 1345 | |
103186c6 MM |
1346 | /* Get the higher value of a 64 bit addend. */ |
1347 | HOWTO (R_MIPS_HIGHER, /* type */ | |
1348 | 0, /* rightshift */ | |
1349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 16, /* bitsize */ | |
1351 | false, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_dont, /* complain_on_overflow */ | |
d75bc93d | 1354 | bfd_elf_generic_reloc, /* special_function */ |
103186c6 | 1355 | "R_MIPS_HIGHER", /* name */ |
d75bc93d TS |
1356 | false, /* partial_inplace */ |
1357 | 0, /* src_mask */ | |
1358 | 0x0000ffff, /* dst_mask */ | |
103186c6 MM |
1359 | false), /* pcrel_offset */ |
1360 | ||
1361 | /* Get the highest value of a 64 bit addend. */ | |
1362 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
1363 | 0, /* rightshift */ | |
1364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1365 | 16, /* bitsize */ | |
1366 | false, /* pc_relative */ | |
1367 | 0, /* bitpos */ | |
1368 | complain_overflow_dont, /* complain_on_overflow */ | |
d75bc93d | 1369 | bfd_elf_generic_reloc, /* special_function */ |
103186c6 | 1370 | "R_MIPS_HIGHEST", /* name */ |
d75bc93d TS |
1371 | false, /* partial_inplace */ |
1372 | 0, /* src_mask */ | |
1373 | 0x0000ffff, /* dst_mask */ | |
103186c6 | 1374 | false), /* pcrel_offset */ |
252b5132 RH |
1375 | |
1376 | /* High 16 bits of displacement in global offset table. */ | |
d75bc93d | 1377 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1378 | HOWTO (R_MIPS_CALL_HI16, /* type */ |
1379 | 0, /* rightshift */ | |
1380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1381 | 16, /* bitsize */ | |
1382 | false, /* pc_relative */ | |
1383 | 0, /* bitpos */ | |
1384 | complain_overflow_dont, /* complain_on_overflow */ | |
1385 | bfd_elf_generic_reloc, /* special_function */ | |
1386 | "R_MIPS_CALL_HI16", /* name */ | |
d75bc93d TS |
1387 | false, /* partial_inplace */ |
1388 | 0, /* src_mask */ | |
252b5132 RH |
1389 | 0x0000ffff, /* dst_mask */ |
1390 | false), /* pcrel_offset */ | |
1391 | ||
1392 | /* Low 16 bits of displacement in global offset table. */ | |
d75bc93d | 1393 | /* FIXME: Not handled correctly. */ |
252b5132 RH |
1394 | HOWTO (R_MIPS_CALL_LO16, /* type */ |
1395 | 0, /* rightshift */ | |
1396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1397 | 16, /* bitsize */ | |
1398 | false, /* pc_relative */ | |
1399 | 0, /* bitpos */ | |
1400 | complain_overflow_dont, /* complain_on_overflow */ | |
1401 | bfd_elf_generic_reloc, /* special_function */ | |
1402 | "R_MIPS_CALL_LO16", /* name */ | |
d75bc93d TS |
1403 | false, /* partial_inplace */ |
1404 | 0, /* src_mask */ | |
252b5132 RH |
1405 | 0x0000ffff, /* dst_mask */ |
1406 | false), /* pcrel_offset */ | |
1407 | ||
d75bc93d TS |
1408 | /* Section displacement, used by an associated event location section. */ |
1409 | /* FIXME: Not handled correctly. */ | |
1410 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
7403cb63 MM |
1411 | 0, /* rightshift */ |
1412 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1413 | 32, /* bitsize */ | |
1414 | false, /* pc_relative */ | |
1415 | 0, /* bitpos */ | |
1416 | complain_overflow_dont, /* complain_on_overflow */ | |
1417 | bfd_elf_generic_reloc, /* special_function */ | |
d75bc93d TS |
1418 | "R_MIPS_SCN_DISP", /* name */ |
1419 | false, /* partial_inplace */ | |
1420 | 0, /* src_mask */ | |
7403cb63 MM |
1421 | 0xffffffff, /* dst_mask */ |
1422 | false), /* pcrel_offset */ | |
1423 | ||
d75bc93d TS |
1424 | HOWTO (R_MIPS_REL16, /* type */ |
1425 | 0, /* rightshift */ | |
1426 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1427 | 16, /* bitsize */ | |
1428 | false, /* pc_relative */ | |
1429 | 0, /* bitpos */ | |
1430 | complain_overflow_signed, /* complain_on_overflow */ | |
1431 | bfd_elf_generic_reloc, /* special_function */ | |
1432 | "R_MIPS_REL16", /* name */ | |
1433 | false, /* partial_inplace */ | |
1434 | 0, /* src_mask */ | |
1435 | 0xffff, /* dst_mask */ | |
1436 | false), /* pcrel_offset */ | |
1437 | ||
1438 | /* These two are obsolete. */ | |
5f771d47 ILT |
1439 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), |
1440 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
d75bc93d TS |
1441 | |
1442 | /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. | |
1443 | It must be used for multigot GOT's (and only there). */ | |
1444 | HOWTO (R_MIPS_RELGOT, /* type */ | |
1445 | 0, /* rightshift */ | |
1446 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1447 | 32, /* bitsize */ | |
1448 | false, /* pc_relative */ | |
1449 | 0, /* bitpos */ | |
1450 | complain_overflow_dont, /* complain_on_overflow */ | |
1451 | bfd_elf_generic_reloc, /* special_function */ | |
1452 | "R_MIPS_RELGOT", /* name */ | |
1453 | false, /* partial_inplace */ | |
1454 | 0, /* src_mask */ | |
1455 | 0xffffffff, /* dst_mask */ | |
1456 | false), /* pcrel_offset */ | |
d2905643 | 1457 | |
be3ccd9c | 1458 | /* Protected jump conversion. This is an optimization hint. No |
d2905643 MM |
1459 | relocation is required for correctness. */ |
1460 | HOWTO (R_MIPS_JALR, /* type */ | |
1461 | 0, /* rightshift */ | |
d75bc93d TS |
1462 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1463 | 32, /* bitsize */ | |
d2905643 MM |
1464 | false, /* pc_relative */ |
1465 | 0, /* bitpos */ | |
1466 | complain_overflow_dont, /* complain_on_overflow */ | |
1467 | bfd_elf_generic_reloc, /* special_function */ | |
1468 | "R_MIPS_JALR", /* name */ | |
1469 | false, /* partial_inplace */ | |
d75bc93d TS |
1470 | 0, /* src_mask */ |
1471 | 0xffffffff, /* dst_mask */ | |
d2905643 | 1472 | false), /* pcrel_offset */ |
252b5132 RH |
1473 | }; |
1474 | ||
1475 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This | |
1476 | is a hack to make the linker think that we need 64 bit values. */ | |
1477 | static reloc_howto_type elf_mips_ctor64_howto = | |
1478 | HOWTO (R_MIPS_64, /* type */ | |
1479 | 0, /* rightshift */ | |
1480 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1481 | 32, /* bitsize */ | |
1482 | false, /* pc_relative */ | |
1483 | 0, /* bitpos */ | |
1484 | complain_overflow_signed, /* complain_on_overflow */ | |
1485 | mips32_64bit_reloc, /* special_function */ | |
1486 | "R_MIPS_64", /* name */ | |
1487 | true, /* partial_inplace */ | |
1488 | 0xffffffff, /* src_mask */ | |
1489 | 0xffffffff, /* dst_mask */ | |
1490 | false); /* pcrel_offset */ | |
1491 | ||
1492 | /* The reloc used for the mips16 jump instruction. */ | |
1493 | static reloc_howto_type elf_mips16_jump_howto = | |
1494 | HOWTO (R_MIPS16_26, /* type */ | |
1495 | 2, /* rightshift */ | |
1496 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1497 | 26, /* bitsize */ | |
1498 | false, /* pc_relative */ | |
1499 | 0, /* bitpos */ | |
1500 | complain_overflow_dont, /* complain_on_overflow */ | |
1501 | /* This needs complex overflow | |
1502 | detection, because the upper four | |
1503 | bits must match the PC. */ | |
1504 | mips16_jump_reloc, /* special_function */ | |
1505 | "R_MIPS16_26", /* name */ | |
1506 | true, /* partial_inplace */ | |
1507 | 0x3ffffff, /* src_mask */ | |
1508 | 0x3ffffff, /* dst_mask */ | |
1509 | false); /* pcrel_offset */ | |
1510 | ||
b7233c24 | 1511 | /* The reloc used for the mips16 gprel instruction. */ |
252b5132 RH |
1512 | static reloc_howto_type elf_mips16_gprel_howto = |
1513 | HOWTO (R_MIPS16_GPREL, /* type */ | |
1514 | 0, /* rightshift */ | |
1515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1516 | 16, /* bitsize */ | |
1517 | false, /* pc_relative */ | |
1518 | 0, /* bitpos */ | |
1519 | complain_overflow_signed, /* complain_on_overflow */ | |
1520 | mips16_gprel_reloc, /* special_function */ | |
1521 | "R_MIPS16_GPREL", /* name */ | |
1522 | true, /* partial_inplace */ | |
b7233c24 MM |
1523 | 0x07ff001f, /* src_mask */ |
1524 | 0x07ff001f, /* dst_mask */ | |
252b5132 RH |
1525 | false); /* pcrel_offset */ |
1526 | ||
bb2d6cd7 GK |
1527 | /* GNU extensions for embedded-pic. */ |
1528 | /* High 16 bits of symbol value, pc-relative. */ | |
1529 | static reloc_howto_type elf_mips_gnu_rel_hi16 = | |
1530 | HOWTO (R_MIPS_GNU_REL_HI16, /* type */ | |
1531 | 0, /* rightshift */ | |
1532 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1533 | 16, /* bitsize */ | |
1534 | true, /* pc_relative */ | |
1535 | 0, /* bitpos */ | |
1536 | complain_overflow_dont, /* complain_on_overflow */ | |
1537 | _bfd_mips_elf_hi16_reloc, /* special_function */ | |
1538 | "R_MIPS_GNU_REL_HI16", /* name */ | |
1539 | true, /* partial_inplace */ | |
1540 | 0xffff, /* src_mask */ | |
1541 | 0xffff, /* dst_mask */ | |
1542 | true); /* pcrel_offset */ | |
1543 | ||
1544 | /* Low 16 bits of symbol value, pc-relative. */ | |
1545 | static reloc_howto_type elf_mips_gnu_rel_lo16 = | |
1546 | HOWTO (R_MIPS_GNU_REL_LO16, /* type */ | |
1547 | 0, /* rightshift */ | |
1548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1549 | 16, /* bitsize */ | |
1550 | true, /* pc_relative */ | |
1551 | 0, /* bitpos */ | |
1552 | complain_overflow_dont, /* complain_on_overflow */ | |
1553 | _bfd_mips_elf_lo16_reloc, /* special_function */ | |
1554 | "R_MIPS_GNU_REL_LO16", /* name */ | |
1555 | true, /* partial_inplace */ | |
1556 | 0xffff, /* src_mask */ | |
1557 | 0xffff, /* dst_mask */ | |
1558 | true); /* pcrel_offset */ | |
1559 | ||
1560 | /* 16 bit offset for pc-relative branches. */ | |
1561 | static reloc_howto_type elf_mips_gnu_rel16_s2 = | |
1562 | HOWTO (R_MIPS_GNU_REL16_S2, /* type */ | |
1563 | 2, /* rightshift */ | |
1564 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1565 | 16, /* bitsize */ | |
1566 | true, /* pc_relative */ | |
1567 | 0, /* bitpos */ | |
1568 | complain_overflow_signed, /* complain_on_overflow */ | |
1569 | bfd_elf_generic_reloc, /* special_function */ | |
1570 | "R_MIPS_GNU_REL16_S2", /* name */ | |
1571 | true, /* partial_inplace */ | |
1572 | 0xffff, /* src_mask */ | |
1573 | 0xffff, /* dst_mask */ | |
1574 | true); /* pcrel_offset */ | |
1575 | ||
1576 | /* 64 bit pc-relative. */ | |
1577 | static reloc_howto_type elf_mips_gnu_pcrel64 = | |
1578 | HOWTO (R_MIPS_PC64, /* type */ | |
1579 | 0, /* rightshift */ | |
1580 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1581 | 64, /* bitsize */ | |
1582 | true, /* pc_relative */ | |
1583 | 0, /* bitpos */ | |
1584 | complain_overflow_signed, /* complain_on_overflow */ | |
1585 | bfd_elf_generic_reloc, /* special_function */ | |
1586 | "R_MIPS_PC64", /* name */ | |
1587 | true, /* partial_inplace */ | |
1588 | MINUS_ONE, /* src_mask */ | |
1589 | MINUS_ONE, /* dst_mask */ | |
1590 | true); /* pcrel_offset */ | |
1591 | ||
1592 | /* 32 bit pc-relative. */ | |
1593 | static reloc_howto_type elf_mips_gnu_pcrel32 = | |
1594 | HOWTO (R_MIPS_PC32, /* type */ | |
1595 | 0, /* rightshift */ | |
1596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1597 | 32, /* bitsize */ | |
1598 | true, /* pc_relative */ | |
1599 | 0, /* bitpos */ | |
1600 | complain_overflow_signed, /* complain_on_overflow */ | |
1601 | bfd_elf_generic_reloc, /* special_function */ | |
1602 | "R_MIPS_PC32", /* name */ | |
1603 | true, /* partial_inplace */ | |
1604 | 0xffffffff, /* src_mask */ | |
1605 | 0xffffffff, /* dst_mask */ | |
1606 | true); /* pcrel_offset */ | |
1607 | ||
252b5132 RH |
1608 | /* GNU extension to record C++ vtable hierarchy */ |
1609 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = | |
1610 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ | |
1611 | 0, /* rightshift */ | |
1612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1613 | 0, /* bitsize */ | |
1614 | false, /* pc_relative */ | |
1615 | 0, /* bitpos */ | |
1616 | complain_overflow_dont, /* complain_on_overflow */ | |
1617 | NULL, /* special_function */ | |
1618 | "R_MIPS_GNU_VTINHERIT", /* name */ | |
1619 | false, /* partial_inplace */ | |
1620 | 0, /* src_mask */ | |
1621 | 0, /* dst_mask */ | |
1622 | false); /* pcrel_offset */ | |
1623 | ||
1624 | /* GNU extension to record C++ vtable member usage */ | |
1625 | static reloc_howto_type elf_mips_gnu_vtentry_howto = | |
1626 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ | |
1627 | 0, /* rightshift */ | |
1628 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1629 | 0, /* bitsize */ | |
1630 | false, /* pc_relative */ | |
1631 | 0, /* bitpos */ | |
1632 | complain_overflow_dont, /* complain_on_overflow */ | |
1633 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
1634 | "R_MIPS_GNU_VTENTRY", /* name */ | |
1635 | false, /* partial_inplace */ | |
1636 | 0, /* src_mask */ | |
1637 | 0, /* dst_mask */ | |
1638 | false); /* pcrel_offset */ | |
1639 | ||
1640 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination | |
1641 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to | |
1642 | the HI16. Here we just save the information we need; we do the | |
fcc76bea CD |
1643 | actual relocation when we see the LO16. |
1644 | ||
1645 | MIPS ELF requires that the LO16 immediately follow the HI16. As a | |
1646 | GNU extension, for non-pc-relative relocations, we permit an | |
252b5132 RH |
1647 | arbitrary number of HI16 relocs to be associated with a single LO16 |
1648 | reloc. This extension permits gcc to output the HI and LO relocs | |
fcc76bea CD |
1649 | itself. |
1650 | ||
1651 | This cannot be done for PC-relative relocations because both the HI16 | |
1652 | and LO16 parts of the relocations must be done relative to the LO16 | |
1653 | part, and there can be carry to or borrow from the HI16 part. */ | |
252b5132 | 1654 | |
38b1a46c NC |
1655 | struct mips_hi16 |
1656 | { | |
252b5132 RH |
1657 | struct mips_hi16 *next; |
1658 | bfd_byte *addr; | |
1659 | bfd_vma addend; | |
1660 | }; | |
1661 | ||
1662 | /* FIXME: This should not be a static variable. */ | |
1663 | ||
1664 | static struct mips_hi16 *mips_hi16_list; | |
1665 | ||
1666 | bfd_reloc_status_type | |
1667 | _bfd_mips_elf_hi16_reloc (abfd, | |
1668 | reloc_entry, | |
1669 | symbol, | |
1670 | data, | |
1671 | input_section, | |
1672 | output_bfd, | |
1673 | error_message) | |
5f771d47 | 1674 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1675 | arelent *reloc_entry; |
1676 | asymbol *symbol; | |
1677 | PTR data; | |
1678 | asection *input_section; | |
1679 | bfd *output_bfd; | |
1680 | char **error_message; | |
1681 | { | |
1682 | bfd_reloc_status_type ret; | |
1683 | bfd_vma relocation; | |
1684 | struct mips_hi16 *n; | |
1685 | ||
1686 | /* If we're relocating, and this an external symbol, we don't want | |
1687 | to change anything. */ | |
1688 | if (output_bfd != (bfd *) NULL | |
1689 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1690 | && reloc_entry->addend == 0) | |
1691 | { | |
1692 | reloc_entry->address += input_section->output_offset; | |
1693 | return bfd_reloc_ok; | |
1694 | } | |
1695 | ||
1696 | ret = bfd_reloc_ok; | |
1697 | ||
1698 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
1699 | { | |
1700 | boolean relocateable; | |
1701 | bfd_vma gp; | |
1702 | ||
1703 | if (ret == bfd_reloc_undefined) | |
1704 | abort (); | |
1705 | ||
1706 | if (output_bfd != NULL) | |
1707 | relocateable = true; | |
1708 | else | |
1709 | { | |
1710 | relocateable = false; | |
1711 | output_bfd = symbol->section->output_section->owner; | |
1712 | } | |
1713 | ||
1714 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
1715 | error_message, &gp); | |
1716 | if (ret != bfd_reloc_ok) | |
1717 | return ret; | |
1718 | ||
1719 | relocation = gp - reloc_entry->address; | |
1720 | } | |
1721 | else | |
1722 | { | |
1723 | if (bfd_is_und_section (symbol->section) | |
1724 | && output_bfd == (bfd *) NULL) | |
1725 | ret = bfd_reloc_undefined; | |
1726 | ||
1727 | if (bfd_is_com_section (symbol->section)) | |
1728 | relocation = 0; | |
1729 | else | |
1730 | relocation = symbol->value; | |
1731 | } | |
1732 | ||
1733 | relocation += symbol->section->output_section->vma; | |
1734 | relocation += symbol->section->output_offset; | |
1735 | relocation += reloc_entry->addend; | |
1736 | ||
1737 | if (reloc_entry->address > input_section->_cooked_size) | |
1738 | return bfd_reloc_outofrange; | |
1739 | ||
1740 | /* Save the information, and let LO16 do the actual relocation. */ | |
dc810e39 | 1741 | n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n); |
252b5132 RH |
1742 | if (n == NULL) |
1743 | return bfd_reloc_outofrange; | |
1744 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
1745 | n->addend = relocation; | |
1746 | n->next = mips_hi16_list; | |
1747 | mips_hi16_list = n; | |
1748 | ||
1749 | if (output_bfd != (bfd *) NULL) | |
1750 | reloc_entry->address += input_section->output_offset; | |
1751 | ||
1752 | return ret; | |
1753 | } | |
1754 | ||
1755 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit | |
1756 | inplace relocation; this function exists in order to do the | |
1757 | R_MIPS_HI16 relocation described above. */ | |
1758 | ||
1759 | bfd_reloc_status_type | |
1760 | _bfd_mips_elf_lo16_reloc (abfd, | |
1761 | reloc_entry, | |
1762 | symbol, | |
1763 | data, | |
1764 | input_section, | |
1765 | output_bfd, | |
1766 | error_message) | |
1767 | bfd *abfd; | |
1768 | arelent *reloc_entry; | |
1769 | asymbol *symbol; | |
1770 | PTR data; | |
1771 | asection *input_section; | |
1772 | bfd *output_bfd; | |
1773 | char **error_message; | |
1774 | { | |
1775 | arelent gp_disp_relent; | |
1776 | ||
1777 | if (mips_hi16_list != NULL) | |
1778 | { | |
1779 | struct mips_hi16 *l; | |
1780 | ||
1781 | l = mips_hi16_list; | |
1782 | while (l != NULL) | |
1783 | { | |
1784 | unsigned long insn; | |
1785 | unsigned long val; | |
1786 | unsigned long vallo; | |
1787 | struct mips_hi16 *next; | |
1788 | ||
1789 | /* Do the HI16 relocation. Note that we actually don't need | |
1790 | to know anything about the LO16 itself, except where to | |
1791 | find the low 16 bits of the addend needed by the LO16. */ | |
1792 | insn = bfd_get_32 (abfd, l->addr); | |
3f0a7f7f AM |
1793 | vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
1794 | ||
1795 | /* The low order 16 bits are always treated as a signed | |
1796 | value. */ | |
1797 | vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000; | |
252b5132 RH |
1798 | val = ((insn & 0xffff) << 16) + vallo; |
1799 | val += l->addend; | |
1800 | ||
fcc76bea CD |
1801 | /* If PC-relative, we need to subtract out the address of the LO |
1802 | half of the HI/LO. (The actual relocation is relative | |
1803 | to that instruction.) */ | |
1804 | if (reloc_entry->howto->pc_relative) | |
1805 | val -= reloc_entry->address; | |
1806 | ||
3f0a7f7f AM |
1807 | /* At this point, "val" has the value of the combined HI/LO |
1808 | pair. If the low order 16 bits (which will be used for | |
1809 | the LO16 insn) are negative, then we will need an | |
1810 | adjustment for the high order 16 bits. */ | |
1811 | val += 0x8000; | |
1812 | val = (val >> 16) & 0xffff; | |
1813 | ||
1814 | insn &= ~ (bfd_vma) 0xffff; | |
1815 | insn |= val; | |
dc810e39 | 1816 | bfd_put_32 (abfd, (bfd_vma) insn, l->addr); |
252b5132 RH |
1817 | |
1818 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
1819 | { | |
1820 | gp_disp_relent = *reloc_entry; | |
1821 | reloc_entry = &gp_disp_relent; | |
1822 | reloc_entry->addend = l->addend; | |
1823 | } | |
1824 | ||
1825 | next = l->next; | |
1826 | free (l); | |
1827 | l = next; | |
1828 | } | |
1829 | ||
1830 | mips_hi16_list = NULL; | |
1831 | } | |
1832 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
1833 | { | |
1834 | bfd_reloc_status_type ret; | |
1835 | bfd_vma gp, relocation; | |
1836 | ||
1837 | /* FIXME: Does this case ever occur? */ | |
1838 | ||
1839 | ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); | |
1840 | if (ret != bfd_reloc_ok) | |
1841 | return ret; | |
1842 | ||
1843 | relocation = gp - reloc_entry->address; | |
1844 | relocation += symbol->section->output_section->vma; | |
1845 | relocation += symbol->section->output_offset; | |
1846 | relocation += reloc_entry->addend; | |
1847 | ||
1848 | if (reloc_entry->address > input_section->_cooked_size) | |
1849 | return bfd_reloc_outofrange; | |
1850 | ||
1851 | gp_disp_relent = *reloc_entry; | |
1852 | reloc_entry = &gp_disp_relent; | |
1853 | reloc_entry->addend = relocation - 4; | |
1854 | } | |
1855 | ||
1856 | /* Now do the LO16 reloc in the usual way. */ | |
1857 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1858 | input_section, output_bfd, error_message); | |
1859 | } | |
1860 | ||
1861 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset | |
1862 | table used for PIC code. If the symbol is an external symbol, the | |
1863 | instruction is modified to contain the offset of the appropriate | |
1864 | entry in the global offset table. If the symbol is a section | |
1865 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
1866 | addends are combined to form the real addend against the section | |
1867 | symbol; the GOT16 is modified to contain the offset of an entry in | |
1868 | the global offset table, and the LO16 is modified to offset it | |
1869 | appropriately. Thus an offset larger than 16 bits requires a | |
1870 | modified value in the global offset table. | |
1871 | ||
1872 | This implementation suffices for the assembler, but the linker does | |
1873 | not yet know how to create global offset tables. */ | |
1874 | ||
1875 | bfd_reloc_status_type | |
1876 | _bfd_mips_elf_got16_reloc (abfd, | |
1877 | reloc_entry, | |
1878 | symbol, | |
1879 | data, | |
1880 | input_section, | |
1881 | output_bfd, | |
1882 | error_message) | |
1883 | bfd *abfd; | |
1884 | arelent *reloc_entry; | |
1885 | asymbol *symbol; | |
1886 | PTR data; | |
1887 | asection *input_section; | |
1888 | bfd *output_bfd; | |
1889 | char **error_message; | |
1890 | { | |
1891 | /* If we're relocating, and this an external symbol, we don't want | |
1892 | to change anything. */ | |
1893 | if (output_bfd != (bfd *) NULL | |
1894 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1895 | && reloc_entry->addend == 0) | |
1896 | { | |
1897 | reloc_entry->address += input_section->output_offset; | |
1898 | return bfd_reloc_ok; | |
1899 | } | |
1900 | ||
1901 | /* If we're relocating, and this is a local symbol, we can handle it | |
1902 | just like HI16. */ | |
1903 | if (output_bfd != (bfd *) NULL | |
1904 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
1905 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
1906 | input_section, output_bfd, error_message); | |
1907 | ||
1908 | abort (); | |
1909 | } | |
1910 | ||
7403cb63 MM |
1911 | /* Set the GP value for OUTPUT_BFD. Returns false if this is a |
1912 | dangerous relocation. */ | |
1913 | ||
1914 | static boolean | |
1915 | mips_elf_assign_gp (output_bfd, pgp) | |
1916 | bfd *output_bfd; | |
1917 | bfd_vma *pgp; | |
1918 | { | |
1919 | unsigned int count; | |
1920 | asymbol **sym; | |
1921 | unsigned int i; | |
1922 | ||
1923 | /* If we've already figured out what GP will be, just return it. */ | |
1924 | *pgp = _bfd_get_gp_value (output_bfd); | |
1925 | if (*pgp) | |
1926 | return true; | |
1927 | ||
1928 | count = bfd_get_symcount (output_bfd); | |
1929 | sym = bfd_get_outsymbols (output_bfd); | |
1930 | ||
1931 | /* The linker script will have created a symbol named `_gp' with the | |
1932 | appropriate value. */ | |
1933 | if (sym == (asymbol **) NULL) | |
1934 | i = count; | |
1935 | else | |
1936 | { | |
1937 | for (i = 0; i < count; i++, sym++) | |
1938 | { | |
dc810e39 | 1939 | register const char *name; |
7403cb63 MM |
1940 | |
1941 | name = bfd_asymbol_name (*sym); | |
1942 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1943 | { | |
1944 | *pgp = bfd_asymbol_value (*sym); | |
1945 | _bfd_set_gp_value (output_bfd, *pgp); | |
1946 | break; | |
1947 | } | |
1948 | } | |
1949 | } | |
1950 | ||
1951 | if (i >= count) | |
1952 | { | |
1953 | /* Only get the error once. */ | |
1954 | *pgp = 4; | |
1955 | _bfd_set_gp_value (output_bfd, *pgp); | |
1956 | return false; | |
1957 | } | |
1958 | ||
1959 | return true; | |
1960 | } | |
1961 | ||
252b5132 RH |
1962 | /* We have to figure out the gp value, so that we can adjust the |
1963 | symbol value correctly. We look up the symbol _gp in the output | |
1964 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1965 | target data. We don't need to adjust the symbol value for an | |
1966 | external symbol if we are producing relocateable output. */ | |
1967 | ||
1968 | static bfd_reloc_status_type | |
1969 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) | |
1970 | bfd *output_bfd; | |
1971 | asymbol *symbol; | |
1972 | boolean relocateable; | |
1973 | char **error_message; | |
1974 | bfd_vma *pgp; | |
1975 | { | |
1976 | if (bfd_is_und_section (symbol->section) | |
1977 | && ! relocateable) | |
1978 | { | |
1979 | *pgp = 0; | |
1980 | return bfd_reloc_undefined; | |
1981 | } | |
1982 | ||
1983 | *pgp = _bfd_get_gp_value (output_bfd); | |
1984 | if (*pgp == 0 | |
1985 | && (! relocateable | |
1986 | || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
1987 | { | |
1988 | if (relocateable) | |
1989 | { | |
1990 | /* Make up a value. */ | |
1991 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1992 | _bfd_set_gp_value (output_bfd, *pgp); | |
1993 | } | |
7403cb63 | 1994 | else if (!mips_elf_assign_gp (output_bfd, pgp)) |
252b5132 | 1995 | { |
7403cb63 MM |
1996 | *error_message = |
1997 | (char *) _("GP relative relocation when _gp not defined"); | |
1998 | return bfd_reloc_dangerous; | |
252b5132 RH |
1999 | } |
2000 | } | |
2001 | ||
2002 | return bfd_reloc_ok; | |
2003 | } | |
2004 | ||
2005 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must | |
2006 | become the offset from the gp register. This function also handles | |
2007 | R_MIPS_LITERAL relocations, although those can be handled more | |
2008 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
2009 | merged. */ | |
2010 | ||
2011 | static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *, | |
2012 | arelent *, asection *, | |
2013 | boolean, PTR, bfd_vma)); | |
2014 | ||
2015 | bfd_reloc_status_type | |
2016 | _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
2017 | output_bfd, error_message) | |
2018 | bfd *abfd; | |
2019 | arelent *reloc_entry; | |
2020 | asymbol *symbol; | |
2021 | PTR data; | |
2022 | asection *input_section; | |
2023 | bfd *output_bfd; | |
2024 | char **error_message; | |
2025 | { | |
2026 | boolean relocateable; | |
2027 | bfd_reloc_status_type ret; | |
2028 | bfd_vma gp; | |
2029 | ||
2030 | /* If we're relocating, and this is an external symbol with no | |
2031 | addend, we don't want to change anything. We will only have an | |
2032 | addend if this is a newly created reloc, not read from an ELF | |
2033 | file. */ | |
2034 | if (output_bfd != (bfd *) NULL | |
2035 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2036 | && reloc_entry->addend == 0) | |
2037 | { | |
2038 | reloc_entry->address += input_section->output_offset; | |
2039 | return bfd_reloc_ok; | |
2040 | } | |
2041 | ||
2042 | if (output_bfd != (bfd *) NULL) | |
2043 | relocateable = true; | |
2044 | else | |
2045 | { | |
2046 | relocateable = false; | |
2047 | output_bfd = symbol->section->output_section->owner; | |
2048 | } | |
2049 | ||
2050 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, | |
2051 | &gp); | |
2052 | if (ret != bfd_reloc_ok) | |
2053 | return ret; | |
2054 | ||
2055 | return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
2056 | relocateable, data, gp); | |
2057 | } | |
2058 | ||
2059 | static bfd_reloc_status_type | |
2060 | gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
2061 | gp) | |
2062 | bfd *abfd; | |
2063 | asymbol *symbol; | |
2064 | arelent *reloc_entry; | |
2065 | asection *input_section; | |
2066 | boolean relocateable; | |
2067 | PTR data; | |
2068 | bfd_vma gp; | |
2069 | { | |
2070 | bfd_vma relocation; | |
2071 | unsigned long insn; | |
2072 | unsigned long val; | |
2073 | ||
2074 | if (bfd_is_com_section (symbol->section)) | |
2075 | relocation = 0; | |
2076 | else | |
2077 | relocation = symbol->value; | |
2078 | ||
2079 | relocation += symbol->section->output_section->vma; | |
2080 | relocation += symbol->section->output_offset; | |
2081 | ||
2082 | if (reloc_entry->address > input_section->_cooked_size) | |
2083 | return bfd_reloc_outofrange; | |
2084 | ||
2085 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
2086 | ||
2087 | /* Set val to the offset into the section or symbol. */ | |
2088 | if (reloc_entry->howto->src_mask == 0) | |
2089 | { | |
2090 | /* This case occurs with the 64-bit MIPS ELF ABI. */ | |
2091 | val = reloc_entry->addend; | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; | |
2096 | if (val & 0x8000) | |
2097 | val -= 0x10000; | |
2098 | } | |
2099 | ||
2100 | /* Adjust val for the final section location and GP value. If we | |
2101 | are producing relocateable output, we don't want to do this for | |
2102 | an external symbol. */ | |
2103 | if (! relocateable | |
2104 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2105 | val += relocation - gp; | |
2106 | ||
956cd1d6 TS |
2107 | insn = (insn & ~0xffff) | (val & 0xffff); |
2108 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
252b5132 RH |
2109 | |
2110 | if (relocateable) | |
2111 | reloc_entry->address += input_section->output_offset; | |
2112 | ||
2113 | /* Make sure it fit in 16 bits. */ | |
43cbcf28 | 2114 | if ((long) val >= 0x8000 || (long) val < -0x8000) |
252b5132 RH |
2115 | return bfd_reloc_overflow; |
2116 | ||
2117 | return bfd_reloc_ok; | |
2118 | } | |
2119 | ||
2120 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset | |
2121 | from the gp register? XXX */ | |
2122 | ||
2123 | static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, | |
2124 | arelent *, asection *, | |
2125 | boolean, PTR, bfd_vma)); | |
2126 | ||
2127 | bfd_reloc_status_type | |
2128 | _bfd_mips_elf_gprel32_reloc (abfd, | |
2129 | reloc_entry, | |
2130 | symbol, | |
2131 | data, | |
2132 | input_section, | |
2133 | output_bfd, | |
2134 | error_message) | |
2135 | bfd *abfd; | |
2136 | arelent *reloc_entry; | |
2137 | asymbol *symbol; | |
2138 | PTR data; | |
2139 | asection *input_section; | |
2140 | bfd *output_bfd; | |
2141 | char **error_message; | |
2142 | { | |
2143 | boolean relocateable; | |
2144 | bfd_reloc_status_type ret; | |
2145 | bfd_vma gp; | |
2146 | ||
2147 | /* If we're relocating, and this is an external symbol with no | |
2148 | addend, we don't want to change anything. We will only have an | |
2149 | addend if this is a newly created reloc, not read from an ELF | |
2150 | file. */ | |
2151 | if (output_bfd != (bfd *) NULL | |
2152 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2153 | && reloc_entry->addend == 0) | |
2154 | { | |
2155 | *error_message = (char *) | |
2156 | _("32bits gp relative relocation occurs for an external symbol"); | |
2157 | return bfd_reloc_outofrange; | |
2158 | } | |
2159 | ||
2160 | if (output_bfd != (bfd *) NULL) | |
2161 | { | |
2162 | relocateable = true; | |
2163 | gp = _bfd_get_gp_value (output_bfd); | |
2164 | } | |
2165 | else | |
2166 | { | |
2167 | relocateable = false; | |
2168 | output_bfd = symbol->section->output_section->owner; | |
2169 | ||
2170 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
2171 | error_message, &gp); | |
2172 | if (ret != bfd_reloc_ok) | |
2173 | return ret; | |
2174 | } | |
2175 | ||
2176 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, | |
2177 | relocateable, data, gp); | |
2178 | } | |
2179 | ||
2180 | static bfd_reloc_status_type | |
2181 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
2182 | gp) | |
2183 | bfd *abfd; | |
2184 | asymbol *symbol; | |
2185 | arelent *reloc_entry; | |
2186 | asection *input_section; | |
2187 | boolean relocateable; | |
2188 | PTR data; | |
2189 | bfd_vma gp; | |
2190 | { | |
2191 | bfd_vma relocation; | |
2192 | unsigned long val; | |
2193 | ||
2194 | if (bfd_is_com_section (symbol->section)) | |
2195 | relocation = 0; | |
2196 | else | |
2197 | relocation = symbol->value; | |
2198 | ||
2199 | relocation += symbol->section->output_section->vma; | |
2200 | relocation += symbol->section->output_offset; | |
2201 | ||
2202 | if (reloc_entry->address > input_section->_cooked_size) | |
2203 | return bfd_reloc_outofrange; | |
2204 | ||
2205 | if (reloc_entry->howto->src_mask == 0) | |
2206 | { | |
2207 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
2208 | val = 0; | |
2209 | } | |
2210 | else | |
2211 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
2212 | ||
2213 | /* Set val to the offset into the section or symbol. */ | |
2214 | val += reloc_entry->addend; | |
2215 | ||
2216 | /* Adjust val for the final section location and GP value. If we | |
2217 | are producing relocateable output, we don't want to do this for | |
2218 | an external symbol. */ | |
2219 | if (! relocateable | |
2220 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2221 | val += relocation - gp; | |
2222 | ||
dc810e39 | 2223 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address); |
252b5132 RH |
2224 | |
2225 | if (relocateable) | |
2226 | reloc_entry->address += input_section->output_offset; | |
2227 | ||
2228 | return bfd_reloc_ok; | |
2229 | } | |
2230 | ||
2231 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are | |
062e2358 | 2232 | generated when addresses are 64 bits. The upper 32 bits are a simple |
252b5132 RH |
2233 | sign extension. */ |
2234 | ||
2235 | static bfd_reloc_status_type | |
2236 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
2237 | output_bfd, error_message) | |
2238 | bfd *abfd; | |
2239 | arelent *reloc_entry; | |
2240 | asymbol *symbol; | |
2241 | PTR data; | |
2242 | asection *input_section; | |
2243 | bfd *output_bfd; | |
2244 | char **error_message; | |
2245 | { | |
2246 | bfd_reloc_status_type r; | |
2247 | arelent reloc32; | |
2248 | unsigned long val; | |
2249 | bfd_size_type addr; | |
2250 | ||
2251 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2252 | input_section, output_bfd, error_message); | |
2253 | if (r != bfd_reloc_continue) | |
2254 | return r; | |
2255 | ||
2256 | /* Do a normal 32 bit relocation on the lower 32 bits. */ | |
2257 | reloc32 = *reloc_entry; | |
2258 | if (bfd_big_endian (abfd)) | |
2259 | reloc32.address += 4; | |
d75bc93d | 2260 | reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; |
252b5132 RH |
2261 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, |
2262 | output_bfd, error_message); | |
2263 | ||
2264 | /* Sign extend into the upper 32 bits. */ | |
2265 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
2266 | if ((val & 0x80000000) != 0) | |
2267 | val = 0xffffffff; | |
2268 | else | |
2269 | val = 0; | |
2270 | addr = reloc_entry->address; | |
2271 | if (bfd_little_endian (abfd)) | |
2272 | addr += 4; | |
dc810e39 | 2273 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr); |
252b5132 RH |
2274 | |
2275 | return r; | |
2276 | } | |
2277 | ||
2278 | /* Handle a mips16 jump. */ | |
2279 | ||
2280 | static bfd_reloc_status_type | |
2281 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
2282 | output_bfd, error_message) | |
5f771d47 | 2283 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2284 | arelent *reloc_entry; |
2285 | asymbol *symbol; | |
5f771d47 | 2286 | PTR data ATTRIBUTE_UNUSED; |
252b5132 RH |
2287 | asection *input_section; |
2288 | bfd *output_bfd; | |
5f771d47 | 2289 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
2290 | { |
2291 | if (output_bfd != (bfd *) NULL | |
2292 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2293 | && reloc_entry->addend == 0) | |
2294 | { | |
2295 | reloc_entry->address += input_section->output_offset; | |
2296 | return bfd_reloc_ok; | |
2297 | } | |
2298 | ||
2299 | /* FIXME. */ | |
2300 | { | |
2301 | static boolean warned; | |
2302 | ||
2303 | if (! warned) | |
2304 | (*_bfd_error_handler) | |
2305 | (_("Linking mips16 objects into %s format is not supported"), | |
2306 | bfd_get_target (input_section->output_section->owner)); | |
2307 | warned = true; | |
2308 | } | |
2309 | ||
2310 | return bfd_reloc_undefined; | |
2311 | } | |
2312 | ||
2313 | /* Handle a mips16 GP relative reloc. */ | |
2314 | ||
2315 | static bfd_reloc_status_type | |
2316 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
2317 | output_bfd, error_message) | |
2318 | bfd *abfd; | |
2319 | arelent *reloc_entry; | |
2320 | asymbol *symbol; | |
2321 | PTR data; | |
2322 | asection *input_section; | |
2323 | bfd *output_bfd; | |
2324 | char **error_message; | |
2325 | { | |
2326 | boolean relocateable; | |
2327 | bfd_reloc_status_type ret; | |
2328 | bfd_vma gp; | |
2329 | unsigned short extend, insn; | |
2330 | unsigned long final; | |
2331 | ||
2332 | /* If we're relocating, and this is an external symbol with no | |
2333 | addend, we don't want to change anything. We will only have an | |
2334 | addend if this is a newly created reloc, not read from an ELF | |
2335 | file. */ | |
2336 | if (output_bfd != NULL | |
2337 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2338 | && reloc_entry->addend == 0) | |
2339 | { | |
2340 | reloc_entry->address += input_section->output_offset; | |
2341 | return bfd_reloc_ok; | |
2342 | } | |
2343 | ||
2344 | if (output_bfd != NULL) | |
2345 | relocateable = true; | |
2346 | else | |
2347 | { | |
2348 | relocateable = false; | |
2349 | output_bfd = symbol->section->output_section->owner; | |
2350 | } | |
2351 | ||
2352 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, | |
2353 | &gp); | |
2354 | if (ret != bfd_reloc_ok) | |
2355 | return ret; | |
2356 | ||
2357 | if (reloc_entry->address > input_section->_cooked_size) | |
2358 | return bfd_reloc_outofrange; | |
2359 | ||
2360 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
2361 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); | |
2362 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); | |
2363 | ||
2364 | /* Stuff the current addend back as a 32 bit value, do the usual | |
2365 | relocation, and then clean up. */ | |
2366 | bfd_put_32 (abfd, | |
dc810e39 AM |
2367 | (bfd_vma) (((extend & 0x1f) << 11) |
2368 | | (extend & 0x7e0) | |
2369 | | (insn & 0x1f)), | |
252b5132 RH |
2370 | (bfd_byte *) data + reloc_entry->address); |
2371 | ||
2372 | ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
2373 | relocateable, data, gp); | |
2374 | ||
2375 | final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
2376 | bfd_put_16 (abfd, | |
dc810e39 AM |
2377 | (bfd_vma) ((extend & 0xf800) |
2378 | | ((final >> 11) & 0x1f) | |
2379 | | (final & 0x7e0)), | |
252b5132 RH |
2380 | (bfd_byte *) data + reloc_entry->address); |
2381 | bfd_put_16 (abfd, | |
dc810e39 AM |
2382 | (bfd_vma) ((insn & 0xffe0) |
2383 | | (final & 0x1f)), | |
252b5132 RH |
2384 | (bfd_byte *) data + reloc_entry->address + 2); |
2385 | ||
2386 | return ret; | |
2387 | } | |
2388 | ||
2389 | /* Return the ISA for a MIPS e_flags value. */ | |
2390 | ||
2391 | static INLINE int | |
2392 | elf_mips_isa (flags) | |
2393 | flagword flags; | |
2394 | { | |
2395 | switch (flags & EF_MIPS_ARCH) | |
2396 | { | |
2397 | case E_MIPS_ARCH_1: | |
2398 | return 1; | |
2399 | case E_MIPS_ARCH_2: | |
2400 | return 2; | |
2401 | case E_MIPS_ARCH_3: | |
2402 | return 3; | |
2403 | case E_MIPS_ARCH_4: | |
2404 | return 4; | |
84ea6cf2 NC |
2405 | case E_MIPS_ARCH_5: |
2406 | return 5; | |
e7af610e NC |
2407 | case E_MIPS_ARCH_32: |
2408 | return 32; | |
84ea6cf2 NC |
2409 | case E_MIPS_ARCH_64: |
2410 | return 64; | |
252b5132 RH |
2411 | } |
2412 | return 4; | |
2413 | } | |
2414 | ||
2415 | /* Return the MACH for a MIPS e_flags value. */ | |
2416 | ||
dc810e39 | 2417 | static INLINE unsigned long |
252b5132 RH |
2418 | elf_mips_mach (flags) |
2419 | flagword flags; | |
2420 | { | |
2421 | switch (flags & EF_MIPS_MACH) | |
2422 | { | |
2423 | case E_MIPS_MACH_3900: | |
2424 | return bfd_mach_mips3900; | |
2425 | ||
2426 | case E_MIPS_MACH_4010: | |
2427 | return bfd_mach_mips4010; | |
2428 | ||
2429 | case E_MIPS_MACH_4100: | |
2430 | return bfd_mach_mips4100; | |
2431 | ||
2432 | case E_MIPS_MACH_4111: | |
2433 | return bfd_mach_mips4111; | |
2434 | ||
2435 | case E_MIPS_MACH_4650: | |
2436 | return bfd_mach_mips4650; | |
2437 | ||
c6c98b38 NC |
2438 | case E_MIPS_MACH_SB1: |
2439 | return bfd_mach_mips_sb1; | |
2440 | ||
252b5132 RH |
2441 | default: |
2442 | switch (flags & EF_MIPS_ARCH) | |
2443 | { | |
2444 | default: | |
2445 | case E_MIPS_ARCH_1: | |
2446 | return bfd_mach_mips3000; | |
2447 | break; | |
2448 | ||
2449 | case E_MIPS_ARCH_2: | |
2450 | return bfd_mach_mips6000; | |
2451 | break; | |
2452 | ||
2453 | case E_MIPS_ARCH_3: | |
2454 | return bfd_mach_mips4000; | |
2455 | break; | |
2456 | ||
2457 | case E_MIPS_ARCH_4: | |
2458 | return bfd_mach_mips8000; | |
2459 | break; | |
e7af610e | 2460 | |
84ea6cf2 NC |
2461 | case E_MIPS_ARCH_5: |
2462 | return bfd_mach_mips5; | |
2463 | break; | |
2464 | ||
e7af610e | 2465 | case E_MIPS_ARCH_32: |
a1cd6a8f | 2466 | return bfd_mach_mipsisa32; |
e7af610e | 2467 | break; |
84ea6cf2 NC |
2468 | |
2469 | case E_MIPS_ARCH_64: | |
a1cd6a8f | 2470 | return bfd_mach_mipsisa64; |
84ea6cf2 | 2471 | break; |
252b5132 RH |
2472 | } |
2473 | } | |
2474 | ||
2475 | return 0; | |
2476 | } | |
2477 | ||
be3ccd9c | 2478 | /* Return printable name for ABI. */ |
252b5132 | 2479 | |
be3ccd9c | 2480 | static INLINE char * |
103186c6 MM |
2481 | elf_mips_abi_name (abfd) |
2482 | bfd *abfd; | |
252b5132 | 2483 | { |
103186c6 MM |
2484 | flagword flags; |
2485 | ||
103186c6 | 2486 | flags = elf_elfheader (abfd)->e_flags; |
252b5132 RH |
2487 | switch (flags & EF_MIPS_ABI) |
2488 | { | |
2489 | case 0: | |
aee61b13 TS |
2490 | if (ABI_N32_P (abfd)) |
2491 | return "N32"; | |
2492 | else if (ABI_64_P (abfd)) | |
2493 | return "64"; | |
2494 | else | |
2495 | return "none"; | |
252b5132 RH |
2496 | case E_MIPS_ABI_O32: |
2497 | return "O32"; | |
2498 | case E_MIPS_ABI_O64: | |
2499 | return "O64"; | |
2500 | case E_MIPS_ABI_EABI32: | |
2501 | return "EABI32"; | |
2502 | case E_MIPS_ABI_EABI64: | |
2503 | return "EABI64"; | |
2504 | default: | |
2505 | return "unknown abi"; | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ | |
2510 | ||
2511 | struct elf_reloc_map { | |
2512 | bfd_reloc_code_real_type bfd_reloc_val; | |
2513 | enum elf_mips_reloc_type elf_reloc_val; | |
2514 | }; | |
2515 | ||
dc810e39 | 2516 | static const struct elf_reloc_map mips_reloc_map[] = |
38b1a46c | 2517 | { |
252b5132 RH |
2518 | { BFD_RELOC_NONE, R_MIPS_NONE, }, |
2519 | { BFD_RELOC_16, R_MIPS_16 }, | |
2520 | { BFD_RELOC_32, R_MIPS_32 }, | |
2521 | { BFD_RELOC_64, R_MIPS_64 }, | |
2522 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
2523 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
2524 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
cdf6fd85 | 2525 | { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, |
252b5132 RH |
2526 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, |
2527 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
2528 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, | |
2529 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, | |
cdf6fd85 | 2530 | { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, |
252b5132 RH |
2531 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, |
2532 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
2533 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
3f830999 MM |
2534 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, |
2535 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, | |
2536 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, | |
2537 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, | |
2538 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } | |
252b5132 RH |
2539 | }; |
2540 | ||
2541 | /* Given a BFD reloc type, return a howto structure. */ | |
2542 | ||
2543 | static reloc_howto_type * | |
2544 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
2545 | bfd *abfd; | |
2546 | bfd_reloc_code_real_type code; | |
2547 | { | |
2548 | unsigned int i; | |
2549 | ||
2550 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
2551 | { | |
2552 | if (mips_reloc_map[i].bfd_reloc_val == code) | |
d75bc93d | 2553 | return &elf_mips_howto_table_rel[(int) mips_reloc_map[i].elf_reloc_val]; |
252b5132 RH |
2554 | } |
2555 | ||
2556 | switch (code) | |
2557 | { | |
2558 | default: | |
2559 | bfd_set_error (bfd_error_bad_value); | |
2560 | return NULL; | |
2561 | ||
2562 | case BFD_RELOC_CTOR: | |
2563 | /* We need to handle BFD_RELOC_CTOR specially. | |
2564 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the | |
2565 | size of addresses on this architecture. */ | |
2566 | if (bfd_arch_bits_per_address (abfd) == 32) | |
d75bc93d | 2567 | return &elf_mips_howto_table_rel[(int) R_MIPS_32]; |
252b5132 RH |
2568 | else |
2569 | return &elf_mips_ctor64_howto; | |
2570 | ||
2571 | case BFD_RELOC_MIPS16_JMP: | |
2572 | return &elf_mips16_jump_howto; | |
2573 | case BFD_RELOC_MIPS16_GPREL: | |
2574 | return &elf_mips16_gprel_howto; | |
2575 | case BFD_RELOC_VTABLE_INHERIT: | |
2576 | return &elf_mips_gnu_vtinherit_howto; | |
2577 | case BFD_RELOC_VTABLE_ENTRY: | |
2578 | return &elf_mips_gnu_vtentry_howto; | |
bb2d6cd7 GK |
2579 | case BFD_RELOC_PCREL_HI16_S: |
2580 | return &elf_mips_gnu_rel_hi16; | |
2581 | case BFD_RELOC_PCREL_LO16: | |
2582 | return &elf_mips_gnu_rel_lo16; | |
2583 | case BFD_RELOC_16_PCREL_S2: | |
2584 | return &elf_mips_gnu_rel16_s2; | |
2585 | case BFD_RELOC_64_PCREL: | |
2586 | return &elf_mips_gnu_pcrel64; | |
2587 | case BFD_RELOC_32_PCREL: | |
2588 | return &elf_mips_gnu_pcrel32; | |
252b5132 RH |
2589 | } |
2590 | } | |
2591 | ||
3f830999 | 2592 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 2593 | |
c9b3cbf3 RH |
2594 | static reloc_howto_type * |
2595 | mips_rtype_to_howto (r_type) | |
2596 | unsigned int r_type; | |
252b5132 | 2597 | { |
252b5132 RH |
2598 | switch (r_type) |
2599 | { | |
2600 | case R_MIPS16_26: | |
c9b3cbf3 | 2601 | return &elf_mips16_jump_howto; |
252b5132 RH |
2602 | break; |
2603 | case R_MIPS16_GPREL: | |
c9b3cbf3 | 2604 | return &elf_mips16_gprel_howto; |
252b5132 RH |
2605 | break; |
2606 | case R_MIPS_GNU_VTINHERIT: | |
c9b3cbf3 | 2607 | return &elf_mips_gnu_vtinherit_howto; |
252b5132 RH |
2608 | break; |
2609 | case R_MIPS_GNU_VTENTRY: | |
c9b3cbf3 | 2610 | return &elf_mips_gnu_vtentry_howto; |
252b5132 | 2611 | break; |
bb2d6cd7 GK |
2612 | case R_MIPS_GNU_REL_HI16: |
2613 | return &elf_mips_gnu_rel_hi16; | |
2614 | break; | |
2615 | case R_MIPS_GNU_REL_LO16: | |
2616 | return &elf_mips_gnu_rel_lo16; | |
2617 | break; | |
2618 | case R_MIPS_GNU_REL16_S2: | |
2619 | return &elf_mips_gnu_rel16_s2; | |
2620 | break; | |
2621 | case R_MIPS_PC64: | |
2622 | return &elf_mips_gnu_pcrel64; | |
2623 | break; | |
2624 | case R_MIPS_PC32: | |
2625 | return &elf_mips_gnu_pcrel32; | |
2626 | break; | |
252b5132 RH |
2627 | |
2628 | default: | |
2629 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
d75bc93d | 2630 | return &elf_mips_howto_table_rel[r_type]; |
252b5132 RH |
2631 | break; |
2632 | } | |
c9b3cbf3 RH |
2633 | } |
2634 | ||
2635 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ | |
2636 | ||
2637 | static void | |
2638 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
2639 | bfd *abfd; | |
2640 | arelent *cache_ptr; | |
2641 | Elf32_Internal_Rel *dst; | |
2642 | { | |
2643 | unsigned int r_type; | |
2644 | ||
2645 | r_type = ELF32_R_TYPE (dst->r_info); | |
2646 | cache_ptr->howto = mips_rtype_to_howto (r_type); | |
252b5132 RH |
2647 | |
2648 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP | |
2649 | value for the object file. We get the addend now, rather than | |
2650 | when we do the relocation, because the symbol manipulations done | |
2651 | by the linker may cause us to lose track of the input BFD. */ | |
2652 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
2653 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
2654 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
2655 | cache_ptr->addend = elf_gp (abfd); | |
2656 | } | |
3f830999 MM |
2657 | |
2658 | /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */ | |
2659 | ||
2660 | static void | |
2661 | mips_info_to_howto_rela (abfd, cache_ptr, dst) | |
2662 | bfd *abfd; | |
2663 | arelent *cache_ptr; | |
2664 | Elf32_Internal_Rela *dst; | |
2665 | { | |
2666 | /* Since an Elf32_Internal_Rel is an initial prefix of an | |
2667 | Elf32_Internal_Rela, we can just use mips_info_to_howto_rel | |
2668 | above. */ | |
2669 | mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst); | |
2670 | ||
2671 | /* If we ever need to do any extra processing with dst->r_addend | |
2672 | (the field omitted in an Elf32_Internal_Rel) we can do it here. */ | |
2673 | } | |
252b5132 RH |
2674 | \f |
2675 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2676 | routines swap this structure in and out. They are used outside of | |
2677 | BFD, so they are globally visible. */ | |
2678 | ||
2679 | void | |
2680 | bfd_mips_elf32_swap_reginfo_in (abfd, ex, in) | |
2681 | bfd *abfd; | |
2682 | const Elf32_External_RegInfo *ex; | |
2683 | Elf32_RegInfo *in; | |
2684 | { | |
dc810e39 AM |
2685 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); |
2686 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2687 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2688 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2689 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2690 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
252b5132 RH |
2691 | } |
2692 | ||
2693 | void | |
2694 | bfd_mips_elf32_swap_reginfo_out (abfd, in, ex) | |
2695 | bfd *abfd; | |
2696 | const Elf32_RegInfo *in; | |
2697 | Elf32_External_RegInfo *ex; | |
2698 | { | |
dc810e39 AM |
2699 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); |
2700 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2701 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2702 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2703 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2704 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
252b5132 RH |
2705 | } |
2706 | ||
2707 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2708 | information in an Elf64_Reginfo structure. These routines swap | |
2709 | them in and out. They are globally visible because they are used | |
2710 | outside of BFD. These routines are here so that gas can call them | |
2711 | without worrying about whether the 64 bit ABI has been included. */ | |
2712 | ||
2713 | void | |
2714 | bfd_mips_elf64_swap_reginfo_in (abfd, ex, in) | |
2715 | bfd *abfd; | |
2716 | const Elf64_External_RegInfo *ex; | |
2717 | Elf64_Internal_RegInfo *in; | |
2718 | { | |
dc810e39 AM |
2719 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); |
2720 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2721 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2722 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2723 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2724 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2725 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
252b5132 RH |
2726 | } |
2727 | ||
2728 | void | |
2729 | bfd_mips_elf64_swap_reginfo_out (abfd, in, ex) | |
2730 | bfd *abfd; | |
2731 | const Elf64_Internal_RegInfo *in; | |
2732 | Elf64_External_RegInfo *ex; | |
2733 | { | |
dc810e39 AM |
2734 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); |
2735 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2736 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2737 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2738 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2739 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2740 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
252b5132 RH |
2741 | } |
2742 | ||
2743 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2744 | on the equivalence of the two elements of the union. */ | |
2745 | ||
2746 | static void | |
2747 | bfd_mips_elf32_swap_gptab_in (abfd, ex, in) | |
2748 | bfd *abfd; | |
2749 | const Elf32_External_gptab *ex; | |
2750 | Elf32_gptab *in; | |
2751 | { | |
dc810e39 AM |
2752 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); |
2753 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
252b5132 RH |
2754 | } |
2755 | ||
2756 | static void | |
2757 | bfd_mips_elf32_swap_gptab_out (abfd, in, ex) | |
2758 | bfd *abfd; | |
2759 | const Elf32_gptab *in; | |
2760 | Elf32_External_gptab *ex; | |
2761 | { | |
dc810e39 AM |
2762 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); |
2763 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
252b5132 RH |
2764 | } |
2765 | ||
2766 | static void | |
2767 | bfd_elf32_swap_compact_rel_out (abfd, in, ex) | |
2768 | bfd *abfd; | |
2769 | const Elf32_compact_rel *in; | |
2770 | Elf32_External_compact_rel *ex; | |
2771 | { | |
dc810e39 AM |
2772 | H_PUT_32 (abfd, in->id1, ex->id1); |
2773 | H_PUT_32 (abfd, in->num, ex->num); | |
2774 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2775 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2776 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2777 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
252b5132 RH |
2778 | } |
2779 | ||
2780 | static void | |
2781 | bfd_elf32_swap_crinfo_out (abfd, in, ex) | |
2782 | bfd *abfd; | |
2783 | const Elf32_crinfo *in; | |
2784 | Elf32_External_crinfo *ex; | |
2785 | { | |
2786 | unsigned long l; | |
2787 | ||
2788 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2789 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2790 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2791 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
dc810e39 AM |
2792 | H_PUT_32 (abfd, l, ex->info); |
2793 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2794 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
252b5132 RH |
2795 | } |
2796 | ||
2797 | /* Swap in an options header. */ | |
2798 | ||
2799 | void | |
2800 | bfd_mips_elf_swap_options_in (abfd, ex, in) | |
2801 | bfd *abfd; | |
2802 | const Elf_External_Options *ex; | |
2803 | Elf_Internal_Options *in; | |
2804 | { | |
dc810e39 AM |
2805 | in->kind = H_GET_8 (abfd, ex->kind); |
2806 | in->size = H_GET_8 (abfd, ex->size); | |
2807 | in->section = H_GET_16 (abfd, ex->section); | |
2808 | in->info = H_GET_32 (abfd, ex->info); | |
252b5132 RH |
2809 | } |
2810 | ||
2811 | /* Swap out an options header. */ | |
2812 | ||
2813 | void | |
2814 | bfd_mips_elf_swap_options_out (abfd, in, ex) | |
2815 | bfd *abfd; | |
2816 | const Elf_Internal_Options *in; | |
2817 | Elf_External_Options *ex; | |
2818 | { | |
dc810e39 AM |
2819 | H_PUT_8 (abfd, in->kind, ex->kind); |
2820 | H_PUT_8 (abfd, in->size, ex->size); | |
2821 | H_PUT_16 (abfd, in->section, ex->section); | |
2822 | H_PUT_32 (abfd, in->info, ex->info); | |
252b5132 | 2823 | } |
86033394 | 2824 | #if 0 |
c6142e5d MM |
2825 | /* Swap in an MSYM entry. */ |
2826 | ||
2827 | static void | |
2828 | bfd_mips_elf_swap_msym_in (abfd, ex, in) | |
2829 | bfd *abfd; | |
2830 | const Elf32_External_Msym *ex; | |
2831 | Elf32_Internal_Msym *in; | |
2832 | { | |
dc810e39 AM |
2833 | in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value); |
2834 | in->ms_info = H_GET_32 (abfd, ex->ms_info); | |
c6142e5d | 2835 | } |
86033394 | 2836 | #endif |
c6142e5d MM |
2837 | /* Swap out an MSYM entry. */ |
2838 | ||
2839 | static void | |
2840 | bfd_mips_elf_swap_msym_out (abfd, in, ex) | |
2841 | bfd *abfd; | |
2842 | const Elf32_Internal_Msym *in; | |
2843 | Elf32_External_Msym *ex; | |
2844 | { | |
dc810e39 AM |
2845 | H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value); |
2846 | H_PUT_32 (abfd, in->ms_info, ex->ms_info); | |
c6142e5d | 2847 | } |
252b5132 RH |
2848 | \f |
2849 | /* Determine whether a symbol is global for the purposes of splitting | |
2850 | the symbol table into global symbols and local symbols. At least | |
2851 | on Irix 5, this split must be between section symbols and all other | |
2852 | symbols. On most ELF targets the split is between static symbols | |
2853 | and externally visible symbols. */ | |
2854 | ||
252b5132 RH |
2855 | static boolean |
2856 | mips_elf_sym_is_global (abfd, sym) | |
5f771d47 | 2857 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2858 | asymbol *sym; |
2859 | { | |
936e320b AM |
2860 | if (SGI_COMPAT (abfd)) |
2861 | return (sym->flags & BSF_SECTION_SYM) == 0; | |
fdbafa10 L |
2862 | else |
2863 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
936e320b AM |
2864 | || bfd_is_und_section (bfd_get_section (sym)) |
2865 | || bfd_is_com_section (bfd_get_section (sym))); | |
252b5132 RH |
2866 | } |
2867 | \f | |
2868 | /* Set the right machine number for a MIPS ELF file. This is used for | |
2869 | both the 32-bit and the 64-bit ABI. */ | |
2870 | ||
2871 | boolean | |
2872 | _bfd_mips_elf_object_p (abfd) | |
2873 | bfd *abfd; | |
2874 | { | |
d75bc93d | 2875 | /* Irix 5 and 6 are broken. Object file symbol tables are not always |
252b5132 RH |
2876 | sorted correctly such that local symbols precede global symbols, |
2877 | and the sh_info field in the symbol table is not always right. */ | |
c36e006f L |
2878 | if (SGI_COMPAT(abfd)) |
2879 | elf_bad_symtab (abfd) = true; | |
252b5132 | 2880 | |
103186c6 MM |
2881 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, |
2882 | elf_mips_mach (elf_elfheader (abfd)->e_flags)); | |
2883 | return true; | |
252b5132 RH |
2884 | } |
2885 | ||
2886 | /* The final processing done just before writing out a MIPS ELF object | |
2887 | file. This gets the MIPS architecture right based on the machine | |
2888 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
2889 | ||
252b5132 RH |
2890 | void |
2891 | _bfd_mips_elf_final_write_processing (abfd, linker) | |
2892 | bfd *abfd; | |
5f771d47 | 2893 | boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
2894 | { |
2895 | unsigned long val; | |
2896 | unsigned int i; | |
2897 | Elf_Internal_Shdr **hdrpp; | |
2898 | const char *name; | |
2899 | asection *sec; | |
2900 | ||
2901 | switch (bfd_get_mach (abfd)) | |
2902 | { | |
2903 | default: | |
2904 | case bfd_mach_mips3000: | |
2905 | val = E_MIPS_ARCH_1; | |
2906 | break; | |
2907 | ||
2908 | case bfd_mach_mips3900: | |
2909 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
2910 | break; | |
2911 | ||
2912 | case bfd_mach_mips6000: | |
2913 | val = E_MIPS_ARCH_2; | |
2914 | break; | |
2915 | ||
2916 | case bfd_mach_mips4000: | |
2917 | case bfd_mach_mips4300: | |
5e7079af L |
2918 | case bfd_mach_mips4400: |
2919 | case bfd_mach_mips4600: | |
252b5132 RH |
2920 | val = E_MIPS_ARCH_3; |
2921 | break; | |
2922 | ||
2923 | case bfd_mach_mips4010: | |
2924 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
2925 | break; | |
2926 | ||
2927 | case bfd_mach_mips4100: | |
2928 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
2929 | break; | |
2930 | ||
2931 | case bfd_mach_mips4111: | |
2932 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
2933 | break; | |
2934 | ||
2935 | case bfd_mach_mips4650: | |
2936 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
2937 | break; | |
2938 | ||
5e7079af | 2939 | case bfd_mach_mips5000: |
252b5132 | 2940 | case bfd_mach_mips8000: |
d1cf510e NC |
2941 | case bfd_mach_mips10000: |
2942 | case bfd_mach_mips12000: | |
252b5132 RH |
2943 | val = E_MIPS_ARCH_4; |
2944 | break; | |
156c2f8b | 2945 | |
84ea6cf2 NC |
2946 | case bfd_mach_mips5: |
2947 | val = E_MIPS_ARCH_5; | |
2948 | break; | |
2949 | ||
c6c98b38 NC |
2950 | case bfd_mach_mips_sb1: |
2951 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
2952 | break; | |
a1cd6a8f EC |
2953 | |
2954 | case bfd_mach_mipsisa32: | |
2955 | val = E_MIPS_ARCH_32; | |
2956 | break; | |
2957 | ||
2958 | case bfd_mach_mipsisa64: | |
2959 | val = E_MIPS_ARCH_64; | |
252b5132 RH |
2960 | } |
2961 | ||
be3ccd9c | 2962 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
252b5132 RH |
2963 | elf_elfheader (abfd)->e_flags |= val; |
2964 | ||
2965 | /* Set the sh_info field for .gptab sections and other appropriate | |
2966 | info for each special section. */ | |
2967 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
9ad5cbcf | 2968 | i < elf_numsections (abfd); |
252b5132 RH |
2969 | i++, hdrpp++) |
2970 | { | |
2971 | switch ((*hdrpp)->sh_type) | |
2972 | { | |
c6142e5d | 2973 | case SHT_MIPS_MSYM: |
252b5132 RH |
2974 | case SHT_MIPS_LIBLIST: |
2975 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
2976 | if (sec != NULL) | |
2977 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
2978 | break; | |
2979 | ||
2980 | case SHT_MIPS_GPTAB: | |
2981 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2982 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2983 | BFD_ASSERT (name != NULL | |
2984 | && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0); | |
2985 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); | |
2986 | BFD_ASSERT (sec != NULL); | |
2987 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
2988 | break; | |
2989 | ||
2990 | case SHT_MIPS_CONTENT: | |
2991 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
2992 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
2993 | BFD_ASSERT (name != NULL | |
2994 | && strncmp (name, ".MIPS.content", | |
2995 | sizeof ".MIPS.content" - 1) == 0); | |
2996 | sec = bfd_get_section_by_name (abfd, | |
2997 | name + sizeof ".MIPS.content" - 1); | |
2998 | BFD_ASSERT (sec != NULL); | |
3f830999 | 2999 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; |
252b5132 RH |
3000 | break; |
3001 | ||
3002 | case SHT_MIPS_SYMBOL_LIB: | |
3003 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
3004 | if (sec != NULL) | |
3005 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
3006 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
3007 | if (sec != NULL) | |
3008 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
3009 | break; | |
3010 | ||
3011 | case SHT_MIPS_EVENTS: | |
3012 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
3013 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
3014 | BFD_ASSERT (name != NULL); | |
3015 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0) | |
3016 | sec = bfd_get_section_by_name (abfd, | |
3017 | name + sizeof ".MIPS.events" - 1); | |
3018 | else | |
3019 | { | |
3020 | BFD_ASSERT (strncmp (name, ".MIPS.post_rel", | |
3021 | sizeof ".MIPS.post_rel" - 1) == 0); | |
3022 | sec = bfd_get_section_by_name (abfd, | |
3023 | (name | |
3024 | + sizeof ".MIPS.post_rel" - 1)); | |
3025 | } | |
3026 | BFD_ASSERT (sec != NULL); | |
3027 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
3028 | break; | |
3029 | ||
3030 | } | |
3031 | } | |
3032 | } | |
3033 | \f | |
be3ccd9c | 3034 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ |
252b5132 RH |
3035 | |
3036 | boolean | |
3037 | _bfd_mips_elf_set_private_flags (abfd, flags) | |
3038 | bfd *abfd; | |
3039 | flagword flags; | |
3040 | { | |
3041 | BFD_ASSERT (!elf_flags_init (abfd) | |
3042 | || elf_elfheader (abfd)->e_flags == flags); | |
3043 | ||
3044 | elf_elfheader (abfd)->e_flags = flags; | |
3045 | elf_flags_init (abfd) = true; | |
3046 | return true; | |
3047 | } | |
3048 | ||
252b5132 RH |
3049 | /* Merge backend specific data from an object file to the output |
3050 | object file when linking. */ | |
3051 | ||
3052 | boolean | |
3053 | _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd) | |
3054 | bfd *ibfd; | |
3055 | bfd *obfd; | |
3056 | { | |
3057 | flagword old_flags; | |
3058 | flagword new_flags; | |
3059 | boolean ok; | |
a9922e52 UC |
3060 | boolean null_input_bfd = true; |
3061 | asection *sec; | |
252b5132 RH |
3062 | |
3063 | /* Check if we have the same endianess */ | |
1fe494a5 NC |
3064 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == false) |
3065 | return false; | |
252b5132 RH |
3066 | |
3067 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3068 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
3069 | return true; | |
3070 | ||
3071 | new_flags = elf_elfheader (ibfd)->e_flags; | |
3072 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
3073 | old_flags = elf_elfheader (obfd)->e_flags; | |
3074 | ||
3075 | if (! elf_flags_init (obfd)) | |
3076 | { | |
3077 | elf_flags_init (obfd) = true; | |
3078 | elf_elfheader (obfd)->e_flags = new_flags; | |
be3ccd9c | 3079 | elf_elfheader (obfd)->e_ident[EI_CLASS] |
103186c6 | 3080 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; |
252b5132 RH |
3081 | |
3082 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
3083 | && bfd_get_arch_info (obfd)->the_default) | |
3084 | { | |
3085 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3086 | bfd_get_mach (ibfd))) | |
3087 | return false; | |
3088 | } | |
3089 | ||
3090 | return true; | |
3091 | } | |
3092 | ||
3093 | /* Check flag compatibility. */ | |
3094 | ||
3095 | new_flags &= ~EF_MIPS_NOREORDER; | |
3096 | old_flags &= ~EF_MIPS_NOREORDER; | |
3097 | ||
3098 | if (new_flags == old_flags) | |
3099 | return true; | |
3100 | ||
a9922e52 UC |
3101 | /* Check to see if the input BFD actually contains any sections. |
3102 | If not, its flags may not have been initialised either, but it cannot | |
3103 | actually cause any incompatibility. */ | |
3104 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
3105 | { | |
3106 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
3107 | which are automatically generated by gas. */ | |
3108 | if (strcmp (sec->name, ".reginfo") | |
3109 | && strcmp (sec->name, ".mdebug") | |
3110 | && ((!strcmp (sec->name, ".text") | |
3111 | || !strcmp (sec->name, ".data") | |
3112 | || !strcmp (sec->name, ".bss")) | |
3113 | && sec->_raw_size != 0)) | |
3114 | { | |
3115 | null_input_bfd = false; | |
3116 | break; | |
3117 | } | |
3118 | } | |
3119 | if (null_input_bfd) | |
3120 | return true; | |
3121 | ||
252b5132 RH |
3122 | ok = true; |
3123 | ||
3124 | if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC)) | |
3125 | { | |
3126 | new_flags &= ~EF_MIPS_PIC; | |
3127 | old_flags &= ~EF_MIPS_PIC; | |
3128 | (*_bfd_error_handler) | |
3129 | (_("%s: linking PIC files with non-PIC files"), | |
8f615d07 | 3130 | bfd_archive_filename (ibfd)); |
252b5132 RH |
3131 | ok = false; |
3132 | } | |
3133 | ||
3134 | if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC)) | |
3135 | { | |
3136 | new_flags &= ~EF_MIPS_CPIC; | |
3137 | old_flags &= ~EF_MIPS_CPIC; | |
3138 | (*_bfd_error_handler) | |
3139 | (_("%s: linking abicalls files with non-abicalls files"), | |
8f615d07 | 3140 | bfd_archive_filename (ibfd)); |
252b5132 RH |
3141 | ok = false; |
3142 | } | |
3143 | ||
be3ccd9c | 3144 | /* Compare the ISA's. */ |
252b5132 RH |
3145 | if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)) |
3146 | != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))) | |
3147 | { | |
3148 | int new_mach = new_flags & EF_MIPS_MACH; | |
3149 | int old_mach = old_flags & EF_MIPS_MACH; | |
3150 | int new_isa = elf_mips_isa (new_flags); | |
3151 | int old_isa = elf_mips_isa (old_flags); | |
3152 | ||
3153 | /* If either has no machine specified, just compare the general isa's. | |
be3ccd9c KH |
3154 | Some combinations of machines are ok, if the isa's match. */ |
3155 | if (! new_mach | |
252b5132 RH |
3156 | || ! old_mach |
3157 | || new_mach == old_mach | |
3158 | ) | |
3159 | { | |
e7af610e NC |
3160 | /* Don't warn about mixing code using 32-bit ISAs, or mixing code |
3161 | using 64-bit ISAs. They will normally use the same data sizes | |
3162 | and calling conventions. */ | |
252b5132 | 3163 | |
e7af610e NC |
3164 | if (( (new_isa == 1 || new_isa == 2 || new_isa == 32) |
3165 | ^ (old_isa == 1 || old_isa == 2 || old_isa == 32)) != 0) | |
252b5132 RH |
3166 | { |
3167 | (*_bfd_error_handler) | |
3168 | (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"), | |
8f615d07 | 3169 | bfd_archive_filename (ibfd), new_isa, old_isa); |
252b5132 RH |
3170 | ok = false; |
3171 | } | |
259d18a3 L |
3172 | else |
3173 | { | |
3174 | /* Do we need to update the mach field? */ | |
3175 | if (old_mach == 0 && new_mach != 0) | |
3176 | elf_elfheader (obfd)->e_flags |= new_mach; | |
3177 | ||
3178 | /* Do we need to update the ISA field? */ | |
3179 | if (new_isa > old_isa) | |
3180 | { | |
3181 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_ARCH; | |
3182 | elf_elfheader (obfd)->e_flags | |
3183 | |= new_flags & EF_MIPS_ARCH; | |
3184 | } | |
3185 | } | |
252b5132 | 3186 | } |
252b5132 RH |
3187 | else |
3188 | { | |
3189 | (*_bfd_error_handler) | |
3190 | (_("%s: ISA mismatch (%d) with previous modules (%d)"), | |
8f615d07 | 3191 | bfd_archive_filename (ibfd), |
252b5132 RH |
3192 | elf_mips_mach (new_flags), |
3193 | elf_mips_mach (old_flags)); | |
3194 | ok = false; | |
3195 | } | |
3196 | ||
be3ccd9c KH |
3197 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
3198 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
252b5132 RH |
3199 | } |
3200 | ||
103186c6 MM |
3201 | /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it |
3202 | does set EI_CLASS differently from any 32-bit ABI. */ | |
3203 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
be3ccd9c | 3204 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] |
103186c6 | 3205 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) |
252b5132 | 3206 | { |
be3ccd9c | 3207 | /* Only error if both are set (to different values). */ |
103186c6 | 3208 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) |
be3ccd9c | 3209 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] |
103186c6 | 3210 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) |
252b5132 RH |
3211 | { |
3212 | (*_bfd_error_handler) | |
3213 | (_("%s: ABI mismatch: linking %s module with previous %s modules"), | |
8f615d07 | 3214 | bfd_archive_filename (ibfd), |
103186c6 MM |
3215 | elf_mips_abi_name (ibfd), |
3216 | elf_mips_abi_name (obfd)); | |
252b5132 RH |
3217 | ok = false; |
3218 | } | |
3219 | new_flags &= ~EF_MIPS_ABI; | |
3220 | old_flags &= ~EF_MIPS_ABI; | |
3221 | } | |
3222 | ||
3223 | /* Warn about any other mismatches */ | |
3224 | if (new_flags != old_flags) | |
3225 | { | |
3226 | (*_bfd_error_handler) | |
3227 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
8f615d07 | 3228 | bfd_archive_filename (ibfd), (unsigned long) new_flags, |
252b5132 RH |
3229 | (unsigned long) old_flags); |
3230 | ok = false; | |
3231 | } | |
3232 | ||
3233 | if (! ok) | |
3234 | { | |
3235 | bfd_set_error (bfd_error_bad_value); | |
3236 | return false; | |
3237 | } | |
3238 | ||
3239 | return true; | |
3240 | } | |
3241 | \f | |
103186c6 | 3242 | boolean |
252b5132 RH |
3243 | _bfd_mips_elf_print_private_bfd_data (abfd, ptr) |
3244 | bfd *abfd; | |
3245 | PTR ptr; | |
3246 | { | |
3247 | FILE *file = (FILE *) ptr; | |
3248 | ||
3249 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
3250 | ||
3251 | /* Print normal ELF private data. */ | |
3252 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
3253 | ||
3254 | /* xgettext:c-format */ | |
be3ccd9c | 3255 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 RH |
3256 | |
3257 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
be3ccd9c | 3258 | fprintf (file, _(" [abi=O32]")); |
252b5132 | 3259 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) |
be3ccd9c | 3260 | fprintf (file, _(" [abi=O64]")); |
252b5132 | 3261 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) |
be3ccd9c | 3262 | fprintf (file, _(" [abi=EABI32]")); |
252b5132 | 3263 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) |
be3ccd9c | 3264 | fprintf (file, _(" [abi=EABI64]")); |
252b5132 | 3265 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) |
be3ccd9c | 3266 | fprintf (file, _(" [abi unknown]")); |
103186c6 | 3267 | else if (ABI_N32_P (abfd)) |
be3ccd9c | 3268 | fprintf (file, _(" [abi=N32]")); |
103186c6 | 3269 | else if (ABI_64_P (abfd)) |
be3ccd9c | 3270 | fprintf (file, _(" [abi=64]")); |
252b5132 | 3271 | else |
be3ccd9c | 3272 | fprintf (file, _(" [no abi set]")); |
252b5132 RH |
3273 | |
3274 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
be3ccd9c | 3275 | fprintf (file, _(" [mips1]")); |
252b5132 | 3276 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
be3ccd9c | 3277 | fprintf (file, _(" [mips2]")); |
252b5132 | 3278 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
be3ccd9c | 3279 | fprintf (file, _(" [mips3]")); |
252b5132 | 3280 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
be3ccd9c | 3281 | fprintf (file, _(" [mips4]")); |
84ea6cf2 | 3282 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
517662d4 | 3283 | fprintf (file, _(" [mips5]")); |
e7af610e | 3284 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
517662d4 | 3285 | fprintf (file, _(" [mips32]")); |
84ea6cf2 | 3286 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
517662d4 | 3287 | fprintf (file, _(" [mips64]")); |
252b5132 | 3288 | else |
be3ccd9c | 3289 | fprintf (file, _(" [unknown ISA]")); |
252b5132 RH |
3290 | |
3291 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) | |
be3ccd9c | 3292 | fprintf (file, _(" [32bitmode]")); |
252b5132 | 3293 | else |
be3ccd9c | 3294 | fprintf (file, _(" [not 32bitmode]")); |
252b5132 RH |
3295 | |
3296 | fputc ('\n', file); | |
3297 | ||
3298 | return true; | |
3299 | } | |
3300 | \f | |
3301 | /* Handle a MIPS specific section when reading an object file. This | |
3302 | is called when elfcode.h finds a section with an unknown type. | |
3303 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
3304 | ||
3305 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
3306 | how to. */ | |
3307 | ||
3308 | boolean | |
3309 | _bfd_mips_elf_section_from_shdr (abfd, hdr, name) | |
3310 | bfd *abfd; | |
3311 | Elf_Internal_Shdr *hdr; | |
103186c6 | 3312 | char *name; |
252b5132 RH |
3313 | { |
3314 | flagword flags = 0; | |
3315 | ||
3316 | /* There ought to be a place to keep ELF backend specific flags, but | |
3317 | at the moment there isn't one. We just keep track of the | |
3318 | sections by their name, instead. Fortunately, the ABI gives | |
3319 | suggested names for all the MIPS specific sections, so we will | |
3320 | probably get away with this. */ | |
3321 | switch (hdr->sh_type) | |
3322 | { | |
3323 | case SHT_MIPS_LIBLIST: | |
3324 | if (strcmp (name, ".liblist") != 0) | |
3325 | return false; | |
3326 | break; | |
3327 | case SHT_MIPS_MSYM: | |
c6142e5d | 3328 | if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0) |
252b5132 RH |
3329 | return false; |
3330 | break; | |
3331 | case SHT_MIPS_CONFLICT: | |
3332 | if (strcmp (name, ".conflict") != 0) | |
3333 | return false; | |
3334 | break; | |
3335 | case SHT_MIPS_GPTAB: | |
3336 | if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0) | |
3337 | return false; | |
3338 | break; | |
3339 | case SHT_MIPS_UCODE: | |
3340 | if (strcmp (name, ".ucode") != 0) | |
3341 | return false; | |
3342 | break; | |
3343 | case SHT_MIPS_DEBUG: | |
3344 | if (strcmp (name, ".mdebug") != 0) | |
3345 | return false; | |
3346 | flags = SEC_DEBUGGING; | |
3347 | break; | |
3348 | case SHT_MIPS_REGINFO: | |
3349 | if (strcmp (name, ".reginfo") != 0 | |
3350 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
3351 | return false; | |
3352 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); | |
3353 | break; | |
3354 | case SHT_MIPS_IFACE: | |
3355 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
3356 | return false; | |
3357 | break; | |
3358 | case SHT_MIPS_CONTENT: | |
3359 | if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0) | |
3360 | return false; | |
3361 | break; | |
3362 | case SHT_MIPS_OPTIONS: | |
303f629d | 3363 | if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0) |
252b5132 RH |
3364 | return false; |
3365 | break; | |
3366 | case SHT_MIPS_DWARF: | |
3367 | if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0) | |
3368 | return false; | |
3369 | break; | |
3370 | case SHT_MIPS_SYMBOL_LIB: | |
3371 | if (strcmp (name, ".MIPS.symlib") != 0) | |
3372 | return false; | |
3373 | break; | |
3374 | case SHT_MIPS_EVENTS: | |
3375 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0 | |
3376 | && strncmp (name, ".MIPS.post_rel", | |
3377 | sizeof ".MIPS.post_rel" - 1) != 0) | |
3378 | return false; | |
3379 | break; | |
3380 | default: | |
3381 | return false; | |
3382 | } | |
3383 | ||
3384 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
3385 | return false; | |
3386 | ||
3387 | if (flags) | |
3388 | { | |
3389 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
3390 | (bfd_get_section_flags (abfd, | |
3391 | hdr->bfd_section) | |
3392 | | flags))) | |
3393 | return false; | |
3394 | } | |
3395 | ||
252b5132 RH |
3396 | /* FIXME: We should record sh_info for a .gptab section. */ |
3397 | ||
3398 | /* For a .reginfo section, set the gp value in the tdata information | |
3399 | from the contents of this section. We need the gp value while | |
3400 | processing relocs, so we just get it now. The .reginfo section | |
3401 | is not used in the 64-bit MIPS ELF ABI. */ | |
3402 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
3403 | { | |
3404 | Elf32_External_RegInfo ext; | |
3405 | Elf32_RegInfo s; | |
3406 | ||
3407 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext, | |
dc810e39 AM |
3408 | (file_ptr) 0, |
3409 | (bfd_size_type) sizeof ext)) | |
252b5132 RH |
3410 | return false; |
3411 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); | |
3412 | elf_gp (abfd) = s.ri_gp_value; | |
3413 | } | |
3414 | ||
3415 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
3416 | set the gp value based on what we find. We may see both | |
3417 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
3418 | they should agree. */ | |
3419 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
3420 | { | |
3421 | bfd_byte *contents, *l, *lend; | |
3422 | ||
3423 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); | |
3424 | if (contents == NULL) | |
3425 | return false; | |
3426 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, | |
3427 | (file_ptr) 0, hdr->sh_size)) | |
3428 | { | |
3429 | free (contents); | |
3430 | return false; | |
3431 | } | |
3432 | l = contents; | |
3433 | lend = contents + hdr->sh_size; | |
3434 | while (l + sizeof (Elf_External_Options) <= lend) | |
3435 | { | |
3436 | Elf_Internal_Options intopt; | |
3437 | ||
3438 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
3439 | &intopt); | |
103186c6 MM |
3440 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
3441 | { | |
3442 | Elf64_Internal_RegInfo intreg; | |
3443 | ||
3444 | bfd_mips_elf64_swap_reginfo_in | |
3445 | (abfd, | |
3446 | ((Elf64_External_RegInfo *) | |
3447 | (l + sizeof (Elf_External_Options))), | |
3448 | &intreg); | |
3449 | elf_gp (abfd) = intreg.ri_gp_value; | |
3450 | } | |
3451 | else if (intopt.kind == ODK_REGINFO) | |
252b5132 RH |
3452 | { |
3453 | Elf32_RegInfo intreg; | |
3454 | ||
3455 | bfd_mips_elf32_swap_reginfo_in | |
3456 | (abfd, | |
3457 | ((Elf32_External_RegInfo *) | |
3458 | (l + sizeof (Elf_External_Options))), | |
3459 | &intreg); | |
3460 | elf_gp (abfd) = intreg.ri_gp_value; | |
3461 | } | |
3462 | l += intopt.size; | |
3463 | } | |
3464 | free (contents); | |
3465 | } | |
3466 | ||
3467 | return true; | |
3468 | } | |
3469 | ||
3470 | /* Set the correct type for a MIPS ELF section. We do this by the | |
3471 | section name, which is a hack, but ought to work. This routine is | |
3472 | used by both the 32-bit and the 64-bit ABI. */ | |
3473 | ||
3474 | boolean | |
3475 | _bfd_mips_elf_fake_sections (abfd, hdr, sec) | |
3476 | bfd *abfd; | |
3477 | Elf32_Internal_Shdr *hdr; | |
3478 | asection *sec; | |
3479 | { | |
3480 | register const char *name; | |
3481 | ||
3482 | name = bfd_get_section_name (abfd, sec); | |
3483 | ||
3484 | if (strcmp (name, ".liblist") == 0) | |
3485 | { | |
3486 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
3487 | hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib); | |
3488 | /* The sh_link field is set in final_write_processing. */ | |
3489 | } | |
252b5132 RH |
3490 | else if (strcmp (name, ".conflict") == 0) |
3491 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
3492 | else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
3493 | { | |
3494 | hdr->sh_type = SHT_MIPS_GPTAB; | |
3495 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
3496 | /* The sh_info field is set in final_write_processing. */ | |
3497 | } | |
3498 | else if (strcmp (name, ".ucode") == 0) | |
3499 | hdr->sh_type = SHT_MIPS_UCODE; | |
3500 | else if (strcmp (name, ".mdebug") == 0) | |
3501 | { | |
3502 | hdr->sh_type = SHT_MIPS_DEBUG; | |
3503 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
3504 | entsize of 0. FIXME: Does this matter? */ | |
3505 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
3506 | hdr->sh_entsize = 0; | |
3507 | else | |
3508 | hdr->sh_entsize = 1; | |
3509 | } | |
3510 | else if (strcmp (name, ".reginfo") == 0) | |
3511 | { | |
3512 | hdr->sh_type = SHT_MIPS_REGINFO; | |
3513 | /* In a shared object on Irix 5.3, the .reginfo section has an | |
3514 | entsize of 0x18. FIXME: Does this matter? */ | |
f7cb7d68 | 3515 | if (SGI_COMPAT (abfd)) |
be3ccd9c KH |
3516 | { |
3517 | if ((abfd->flags & DYNAMIC) != 0) | |
3518 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
3519 | else | |
3520 | hdr->sh_entsize = 1; | |
3521 | } | |
252b5132 | 3522 | else |
be3ccd9c | 3523 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); |
252b5132 RH |
3524 | } |
3525 | else if (SGI_COMPAT (abfd) | |
3526 | && (strcmp (name, ".hash") == 0 | |
3527 | || strcmp (name, ".dynamic") == 0 | |
3528 | || strcmp (name, ".dynstr") == 0)) | |
3529 | { | |
be3ccd9c KH |
3530 | if (SGI_COMPAT (abfd)) |
3531 | hdr->sh_entsize = 0; | |
252b5132 RH |
3532 | #if 0 |
3533 | /* This isn't how the Irix 6 linker behaves. */ | |
3534 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; | |
3535 | #endif | |
3536 | } | |
3537 | else if (strcmp (name, ".got") == 0 | |
303f629d | 3538 | || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0 |
252b5132 RH |
3539 | || strcmp (name, ".sdata") == 0 |
3540 | || strcmp (name, ".sbss") == 0 | |
3541 | || strcmp (name, ".lit4") == 0 | |
3542 | || strcmp (name, ".lit8") == 0) | |
3543 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
3544 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
3545 | { | |
3546 | hdr->sh_type = SHT_MIPS_IFACE; | |
3547 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
3548 | } | |
3f830999 | 3549 | else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0) |
252b5132 RH |
3550 | { |
3551 | hdr->sh_type = SHT_MIPS_CONTENT; | |
3f830999 | 3552 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
252b5132 RH |
3553 | /* The sh_info field is set in final_write_processing. */ |
3554 | } | |
303f629d | 3555 | else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0) |
252b5132 RH |
3556 | { |
3557 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
3558 | hdr->sh_entsize = 1; | |
3559 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
3560 | } | |
3561 | else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0) | |
3562 | hdr->sh_type = SHT_MIPS_DWARF; | |
3563 | else if (strcmp (name, ".MIPS.symlib") == 0) | |
3564 | { | |
3565 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
3566 | /* The sh_link and sh_info fields are set in | |
3567 | final_write_processing. */ | |
3568 | } | |
3569 | else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0 | |
3570 | || strncmp (name, ".MIPS.post_rel", | |
3571 | sizeof ".MIPS.post_rel" - 1) == 0) | |
3572 | { | |
3573 | hdr->sh_type = SHT_MIPS_EVENTS; | |
3574 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
3575 | /* The sh_link field is set in final_write_processing. */ | |
3576 | } | |
c6142e5d MM |
3577 | else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0) |
3578 | { | |
3579 | hdr->sh_type = SHT_MIPS_MSYM; | |
3580 | hdr->sh_flags |= SHF_ALLOC; | |
3581 | hdr->sh_entsize = 8; | |
3582 | } | |
252b5132 | 3583 | |
23bc299b MM |
3584 | /* The generic elf_fake_sections will set up REL_HDR using the |
3585 | default kind of relocations. But, we may actually need both | |
027d73eb EC |
3586 | kinds of relocations, so we set up the second header here. |
3587 | ||
3588 | This is not necessary for the O32 ABI since that only uses Elf32_Rel | |
3589 | relocations (cf. System V ABI, MIPS RISC Processor Supplement, | |
3590 | 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one | |
3591 | of the resulting empty .rela.<section> sections starts with | |
3592 | sh_offset == object size, and ld doesn't allow that. While the check | |
3593 | is arguably bogus for empty or SHT_NOBITS sections, it can easily be | |
3594 | avoided by not emitting those useless sections in the first place. */ | |
3595 | if (IRIX_COMPAT (abfd) != ict_irix5 && (sec->flags & SEC_RELOC) != 0) | |
23bc299b MM |
3596 | { |
3597 | struct bfd_elf_section_data *esd; | |
dc810e39 | 3598 | bfd_size_type amt = sizeof (Elf_Internal_Shdr); |
23bc299b MM |
3599 | |
3600 | esd = elf_section_data (sec); | |
3601 | BFD_ASSERT (esd->rel_hdr2 == NULL); | |
dc810e39 | 3602 | esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt); |
23bc299b MM |
3603 | if (!esd->rel_hdr2) |
3604 | return false; | |
3605 | _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec, | |
3606 | !elf_section_data (sec)->use_rela_p); | |
3607 | } | |
3608 | ||
252b5132 RH |
3609 | return true; |
3610 | } | |
3611 | ||
3612 | /* Given a BFD section, try to locate the corresponding ELF section | |
3613 | index. This is used by both the 32-bit and the 64-bit ABI. | |
3614 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
3615 | but for non-PIC objects we will certainly want support for at least | |
3616 | the .scommon section. */ | |
3617 | ||
3618 | boolean | |
af746e92 | 3619 | _bfd_mips_elf_section_from_bfd_section (abfd, sec, retval) |
d9bc7a44 | 3620 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3621 | asection *sec; |
3622 | int *retval; | |
3623 | { | |
3624 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
3625 | { | |
3626 | *retval = SHN_MIPS_SCOMMON; | |
3627 | return true; | |
3628 | } | |
3629 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
3630 | { | |
3631 | *retval = SHN_MIPS_ACOMMON; | |
3632 | return true; | |
3633 | } | |
3634 | return false; | |
3635 | } | |
3636 | ||
3637 | /* When are writing out the .options or .MIPS.options section, | |
3638 | remember the bytes we are writing out, so that we can install the | |
3639 | GP value in the section_processing routine. */ | |
3640 | ||
3641 | boolean | |
3642 | _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count) | |
3643 | bfd *abfd; | |
3644 | sec_ptr section; | |
3645 | PTR location; | |
3646 | file_ptr offset; | |
3647 | bfd_size_type count; | |
3648 | { | |
303f629d | 3649 | if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0) |
252b5132 RH |
3650 | { |
3651 | bfd_byte *c; | |
3652 | ||
3653 | if (elf_section_data (section) == NULL) | |
3654 | { | |
dc810e39 AM |
3655 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); |
3656 | section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt); | |
252b5132 RH |
3657 | if (elf_section_data (section) == NULL) |
3658 | return false; | |
3659 | } | |
3660 | c = (bfd_byte *) elf_section_data (section)->tdata; | |
3661 | if (c == NULL) | |
3662 | { | |
3663 | bfd_size_type size; | |
3664 | ||
3665 | if (section->_cooked_size != 0) | |
3666 | size = section->_cooked_size; | |
3667 | else | |
3668 | size = section->_raw_size; | |
3669 | c = (bfd_byte *) bfd_zalloc (abfd, size); | |
3670 | if (c == NULL) | |
3671 | return false; | |
3672 | elf_section_data (section)->tdata = (PTR) c; | |
3673 | } | |
3674 | ||
dc810e39 | 3675 | memcpy (c + offset, location, (size_t) count); |
252b5132 RH |
3676 | } |
3677 | ||
3678 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
3679 | count); | |
3680 | } | |
3681 | ||
3682 | /* Work over a section just before writing it out. This routine is | |
3683 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
3684 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
3685 | a better way. */ | |
3686 | ||
3687 | boolean | |
3688 | _bfd_mips_elf_section_processing (abfd, hdr) | |
3689 | bfd *abfd; | |
3690 | Elf_Internal_Shdr *hdr; | |
252b5132 | 3691 | { |
cc3bfcee ILT |
3692 | if (hdr->sh_type == SHT_MIPS_REGINFO |
3693 | && hdr->sh_size > 0) | |
252b5132 RH |
3694 | { |
3695 | bfd_byte buf[4]; | |
3696 | ||
3697 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
3698 | BFD_ASSERT (hdr->contents == NULL); | |
3699 | ||
3700 | if (bfd_seek (abfd, | |
3701 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
dc810e39 | 3702 | SEEK_SET) != 0) |
252b5132 | 3703 | return false; |
dc810e39 AM |
3704 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
3705 | if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4) | |
252b5132 RH |
3706 | return false; |
3707 | } | |
3708 | ||
3709 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
3710 | && hdr->bfd_section != NULL | |
3711 | && elf_section_data (hdr->bfd_section) != NULL | |
3712 | && elf_section_data (hdr->bfd_section)->tdata != NULL) | |
3713 | { | |
3714 | bfd_byte *contents, *l, *lend; | |
3715 | ||
3716 | /* We stored the section contents in the elf_section_data tdata | |
3717 | field in the set_section_contents routine. We save the | |
3718 | section contents so that we don't have to read them again. | |
3719 | At this point we know that elf_gp is set, so we can look | |
3720 | through the section contents to see if there is an | |
3721 | ODK_REGINFO structure. */ | |
3722 | ||
3723 | contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata; | |
3724 | l = contents; | |
3725 | lend = contents + hdr->sh_size; | |
3726 | while (l + sizeof (Elf_External_Options) <= lend) | |
3727 | { | |
3728 | Elf_Internal_Options intopt; | |
3729 | ||
3730 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
3731 | &intopt); | |
103186c6 MM |
3732 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
3733 | { | |
3734 | bfd_byte buf[8]; | |
3735 | ||
3736 | if (bfd_seek (abfd, | |
3737 | (hdr->sh_offset | |
3738 | + (l - contents) | |
3739 | + sizeof (Elf_External_Options) | |
3740 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
dc810e39 | 3741 | SEEK_SET) != 0) |
103186c6 | 3742 | return false; |
dc810e39 AM |
3743 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
3744 | if (bfd_bwrite (buf, (bfd_size_type) 8, abfd) != 8) | |
103186c6 MM |
3745 | return false; |
3746 | } | |
3747 | else if (intopt.kind == ODK_REGINFO) | |
252b5132 RH |
3748 | { |
3749 | bfd_byte buf[4]; | |
3750 | ||
3751 | if (bfd_seek (abfd, | |
3752 | (hdr->sh_offset | |
3753 | + (l - contents) | |
3754 | + sizeof (Elf_External_Options) | |
3755 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
dc810e39 | 3756 | SEEK_SET) != 0) |
252b5132 | 3757 | return false; |
dc810e39 AM |
3758 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
3759 | if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4) | |
252b5132 RH |
3760 | return false; |
3761 | } | |
3762 | l += intopt.size; | |
3763 | } | |
3764 | } | |
3765 | ||
103186c6 MM |
3766 | if (hdr->bfd_section != NULL) |
3767 | { | |
3768 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
3769 | ||
3770 | if (strcmp (name, ".sdata") == 0 | |
3771 | || strcmp (name, ".lit8") == 0 | |
3772 | || strcmp (name, ".lit4") == 0) | |
3773 | { | |
3774 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
3775 | hdr->sh_type = SHT_PROGBITS; | |
3776 | } | |
3777 | else if (strcmp (name, ".sbss") == 0) | |
3778 | { | |
3779 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
3780 | hdr->sh_type = SHT_NOBITS; | |
3781 | } | |
3782 | else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0) | |
3783 | { | |
3784 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
3785 | hdr->sh_type = SHT_PROGBITS; | |
3786 | } | |
3787 | else if (strcmp (name, ".compact_rel") == 0) | |
3788 | { | |
3789 | hdr->sh_flags = 0; | |
3790 | hdr->sh_type = SHT_PROGBITS; | |
3791 | } | |
3792 | else if (strcmp (name, ".rtproc") == 0) | |
3793 | { | |
3794 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
3795 | { | |
3796 | unsigned int adjust; | |
3797 | ||
3798 | adjust = hdr->sh_size % hdr->sh_addralign; | |
3799 | if (adjust != 0) | |
3800 | hdr->sh_size += hdr->sh_addralign - adjust; | |
3801 | } | |
3802 | } | |
3803 | } | |
3804 | ||
3805 | return true; | |
252b5132 RH |
3806 | } |
3807 | \f | |
3808 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
3809 | other is for small objects. All the small objects are kept | |
3810 | together, and then referenced via the gp pointer, which yields | |
3811 | faster assembler code. This is what we use for the small common | |
3812 | section. This approach is copied from ecoff.c. */ | |
3813 | static asection mips_elf_scom_section; | |
3814 | static asymbol mips_elf_scom_symbol; | |
3815 | static asymbol *mips_elf_scom_symbol_ptr; | |
3816 | ||
3817 | /* MIPS ELF also uses an acommon section, which represents an | |
3818 | allocated common symbol which may be overridden by a | |
3819 | definition in a shared library. */ | |
3820 | static asection mips_elf_acom_section; | |
3821 | static asymbol mips_elf_acom_symbol; | |
3822 | static asymbol *mips_elf_acom_symbol_ptr; | |
3823 | ||
252b5132 RH |
3824 | /* Handle the special MIPS section numbers that a symbol may use. |
3825 | This is used for both the 32-bit and the 64-bit ABI. */ | |
3826 | ||
3827 | void | |
3828 | _bfd_mips_elf_symbol_processing (abfd, asym) | |
3829 | bfd *abfd; | |
3830 | asymbol *asym; | |
3831 | { | |
3832 | elf_symbol_type *elfsym; | |
3833 | ||
3834 | elfsym = (elf_symbol_type *) asym; | |
3835 | switch (elfsym->internal_elf_sym.st_shndx) | |
3836 | { | |
3837 | case SHN_MIPS_ACOMMON: | |
3838 | /* This section is used in a dynamically linked executable file. | |
3839 | It is an allocated common section. The dynamic linker can | |
3840 | either resolve these symbols to something in a shared | |
3841 | library, or it can just leave them here. For our purposes, | |
3842 | we can consider these symbols to be in a new section. */ | |
3843 | if (mips_elf_acom_section.name == NULL) | |
3844 | { | |
3845 | /* Initialize the acommon section. */ | |
3846 | mips_elf_acom_section.name = ".acommon"; | |
3847 | mips_elf_acom_section.flags = SEC_ALLOC; | |
3848 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
3849 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
3850 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
3851 | mips_elf_acom_symbol.name = ".acommon"; | |
3852 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
3853 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
3854 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
3855 | } | |
3856 | asym->section = &mips_elf_acom_section; | |
3857 | break; | |
3858 | ||
3859 | case SHN_COMMON: | |
3860 | /* Common symbols less than the GP size are automatically | |
7403cb63 MM |
3861 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ |
3862 | if (asym->value > elf_gp_size (abfd) | |
3863 | || IRIX_COMPAT (abfd) == ict_irix6) | |
252b5132 RH |
3864 | break; |
3865 | /* Fall through. */ | |
3866 | case SHN_MIPS_SCOMMON: | |
3867 | if (mips_elf_scom_section.name == NULL) | |
3868 | { | |
3869 | /* Initialize the small common section. */ | |
3870 | mips_elf_scom_section.name = ".scommon"; | |
3871 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
3872 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
3873 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
3874 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
3875 | mips_elf_scom_symbol.name = ".scommon"; | |
3876 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
3877 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
3878 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
3879 | } | |
3880 | asym->section = &mips_elf_scom_section; | |
3881 | asym->value = elfsym->internal_elf_sym.st_size; | |
3882 | break; | |
3883 | ||
3884 | case SHN_MIPS_SUNDEFINED: | |
3885 | asym->section = bfd_und_section_ptr; | |
3886 | break; | |
3887 | ||
3888 | #if 0 /* for SGI_COMPAT */ | |
3889 | case SHN_MIPS_TEXT: | |
3890 | asym->section = mips_elf_text_section_ptr; | |
3891 | break; | |
3892 | ||
3893 | case SHN_MIPS_DATA: | |
3894 | asym->section = mips_elf_data_section_ptr; | |
3895 | break; | |
3896 | #endif | |
3897 | } | |
3898 | } | |
3899 | \f | |
3900 | /* When creating an Irix 5 executable, we need REGINFO and RTPROC | |
3901 | segments. */ | |
3902 | ||
103186c6 MM |
3903 | int |
3904 | _bfd_mips_elf_additional_program_headers (abfd) | |
252b5132 RH |
3905 | bfd *abfd; |
3906 | { | |
3907 | asection *s; | |
303f629d | 3908 | int ret = 0; |
252b5132 | 3909 | |
303f629d | 3910 | /* See if we need a PT_MIPS_REGINFO segment. */ |
252b5132 | 3911 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
303f629d MM |
3912 | if (s && (s->flags & SEC_LOAD)) |
3913 | ++ret; | |
252b5132 | 3914 | |
303f629d MM |
3915 | /* See if we need a PT_MIPS_OPTIONS segment. */ |
3916 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
be3ccd9c | 3917 | && bfd_get_section_by_name (abfd, |
303f629d MM |
3918 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) |
3919 | ++ret; | |
3920 | ||
3921 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
3922 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
3923 | && bfd_get_section_by_name (abfd, ".dynamic") | |
3924 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
3925 | ++ret; | |
252b5132 RH |
3926 | |
3927 | return ret; | |
3928 | } | |
3929 | ||
3930 | /* Modify the segment map for an Irix 5 executable. */ | |
3931 | ||
103186c6 MM |
3932 | boolean |
3933 | _bfd_mips_elf_modify_segment_map (abfd) | |
252b5132 RH |
3934 | bfd *abfd; |
3935 | { | |
3936 | asection *s; | |
3937 | struct elf_segment_map *m, **pm; | |
dc810e39 | 3938 | bfd_size_type amt; |
252b5132 | 3939 | |
252b5132 RH |
3940 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO |
3941 | segment. */ | |
3942 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
3943 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3944 | { | |
3945 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
3946 | if (m->p_type == PT_MIPS_REGINFO) | |
3947 | break; | |
3948 | if (m == NULL) | |
3949 | { | |
dc810e39 AM |
3950 | amt = sizeof *m; |
3951 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
252b5132 RH |
3952 | if (m == NULL) |
3953 | return false; | |
3954 | ||
3955 | m->p_type = PT_MIPS_REGINFO; | |
3956 | m->count = 1; | |
3957 | m->sections[0] = s; | |
3958 | ||
3959 | /* We want to put it after the PHDR and INTERP segments. */ | |
3960 | pm = &elf_tdata (abfd)->segment_map; | |
3961 | while (*pm != NULL | |
3962 | && ((*pm)->p_type == PT_PHDR | |
3963 | || (*pm)->p_type == PT_INTERP)) | |
3964 | pm = &(*pm)->next; | |
3965 | ||
3966 | m->next = *pm; | |
3967 | *pm = m; | |
3968 | } | |
3969 | } | |
3970 | ||
303f629d MM |
3971 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but |
3972 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
3973 | PT_OPTIONS segement immediately following the program header | |
3974 | table. */ | |
3975 | if (IRIX_COMPAT (abfd) == ict_irix6) | |
252b5132 | 3976 | { |
303f629d MM |
3977 | for (s = abfd->sections; s; s = s->next) |
3978 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
252b5132 | 3979 | break; |
303f629d MM |
3980 | |
3981 | if (s) | |
252b5132 | 3982 | { |
303f629d MM |
3983 | struct elf_segment_map *options_segment; |
3984 | ||
435394bf MM |
3985 | /* Usually, there's a program header table. But, sometimes |
3986 | there's not (like when running the `ld' testsuite). So, | |
3987 | if there's no program header table, we just put the | |
3988 | options segement at the end. */ | |
be3ccd9c | 3989 | for (pm = &elf_tdata (abfd)->segment_map; |
435394bf MM |
3990 | *pm != NULL; |
3991 | pm = &(*pm)->next) | |
3992 | if ((*pm)->p_type == PT_PHDR) | |
303f629d MM |
3993 | break; |
3994 | ||
dc810e39 AM |
3995 | amt = sizeof (struct elf_segment_map); |
3996 | options_segment = bfd_zalloc (abfd, amt); | |
435394bf | 3997 | options_segment->next = *pm; |
303f629d MM |
3998 | options_segment->p_type = PT_MIPS_OPTIONS; |
3999 | options_segment->p_flags = PF_R; | |
4000 | options_segment->p_flags_valid = true; | |
4001 | options_segment->count = 1; | |
4002 | options_segment->sections[0] = s; | |
435394bf | 4003 | *pm = options_segment; |
303f629d MM |
4004 | } |
4005 | } | |
4006 | else | |
4007 | { | |
f7cb7d68 | 4008 | if (IRIX_COMPAT (abfd) == ict_irix5) |
303f629d | 4009 | { |
f7cb7d68 UC |
4010 | /* If there are .dynamic and .mdebug sections, we make a room |
4011 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
4012 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
4013 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
4014 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
252b5132 | 4015 | { |
f7cb7d68 UC |
4016 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4017 | if (m->p_type == PT_MIPS_RTPROC) | |
4018 | break; | |
303f629d | 4019 | if (m == NULL) |
f7cb7d68 | 4020 | { |
dc810e39 AM |
4021 | amt = sizeof *m; |
4022 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
f7cb7d68 UC |
4023 | if (m == NULL) |
4024 | return false; | |
252b5132 | 4025 | |
f7cb7d68 | 4026 | m->p_type = PT_MIPS_RTPROC; |
252b5132 | 4027 | |
f7cb7d68 UC |
4028 | s = bfd_get_section_by_name (abfd, ".rtproc"); |
4029 | if (s == NULL) | |
4030 | { | |
4031 | m->count = 0; | |
4032 | m->p_flags = 0; | |
4033 | m->p_flags_valid = 1; | |
4034 | } | |
4035 | else | |
4036 | { | |
4037 | m->count = 1; | |
4038 | m->sections[0] = s; | |
4039 | } | |
303f629d | 4040 | |
f7cb7d68 UC |
4041 | /* We want to put it after the DYNAMIC segment. */ |
4042 | pm = &elf_tdata (abfd)->segment_map; | |
4043 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
4044 | pm = &(*pm)->next; | |
4045 | if (*pm != NULL) | |
4046 | pm = &(*pm)->next; | |
303f629d | 4047 | |
f7cb7d68 UC |
4048 | m->next = *pm; |
4049 | *pm = m; | |
4050 | } | |
303f629d | 4051 | } |
252b5132 | 4052 | } |
303f629d MM |
4053 | /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, |
4054 | .dynstr, .dynsym, and .hash sections, and everything in | |
4055 | between. */ | |
f7cb7d68 UC |
4056 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; |
4057 | pm = &(*pm)->next) | |
303f629d MM |
4058 | if ((*pm)->p_type == PT_DYNAMIC) |
4059 | break; | |
4060 | m = *pm; | |
1b58be7e | 4061 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) |
f7cb7d68 UC |
4062 | { |
4063 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
4064 | segment are read, write and execute. We do that here since | |
4065 | the code in elf.c sets only the read permission. This matters | |
be3ccd9c | 4066 | sometimes for the dynamic linker. */ |
f7cb7d68 UC |
4067 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) |
4068 | { | |
4069 | m->p_flags = PF_R | PF_W | PF_X; | |
4070 | m->p_flags_valid = 1; | |
4071 | } | |
4072 | } | |
303f629d | 4073 | if (m != NULL |
f7cb7d68 | 4074 | && m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0) |
252b5132 | 4075 | { |
38b1a46c NC |
4076 | static const char *sec_names[] = |
4077 | { | |
be3ccd9c KH |
4078 | ".dynamic", ".dynstr", ".dynsym", ".hash" |
4079 | }; | |
303f629d MM |
4080 | bfd_vma low, high; |
4081 | unsigned int i, c; | |
4082 | struct elf_segment_map *n; | |
4083 | ||
4084 | low = 0xffffffff; | |
4085 | high = 0; | |
4086 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
252b5132 | 4087 | { |
303f629d MM |
4088 | s = bfd_get_section_by_name (abfd, sec_names[i]); |
4089 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4090 | { | |
4091 | bfd_size_type sz; | |
4092 | ||
4093 | if (low > s->vma) | |
4094 | low = s->vma; | |
4095 | sz = s->_cooked_size; | |
4096 | if (sz == 0) | |
4097 | sz = s->_raw_size; | |
4098 | if (high < s->vma + sz) | |
4099 | high = s->vma + sz; | |
4100 | } | |
252b5132 | 4101 | } |
252b5132 | 4102 | |
303f629d MM |
4103 | c = 0; |
4104 | for (s = abfd->sections; s != NULL; s = s->next) | |
4105 | if ((s->flags & SEC_LOAD) != 0 | |
4106 | && s->vma >= low | |
4107 | && ((s->vma | |
f7cb7d68 UC |
4108 | + (s->_cooked_size != |
4109 | 0 ? s->_cooked_size : s->_raw_size)) <= high)) | |
303f629d MM |
4110 | ++c; |
4111 | ||
dc810e39 AM |
4112 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); |
4113 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
303f629d MM |
4114 | if (n == NULL) |
4115 | return false; | |
4116 | *n = *m; | |
4117 | n->count = c; | |
252b5132 | 4118 | |
303f629d MM |
4119 | i = 0; |
4120 | for (s = abfd->sections; s != NULL; s = s->next) | |
252b5132 | 4121 | { |
303f629d MM |
4122 | if ((s->flags & SEC_LOAD) != 0 |
4123 | && s->vma >= low | |
4124 | && ((s->vma | |
4125 | + (s->_cooked_size != 0 ? | |
f7cb7d68 | 4126 | s->_cooked_size : s->_raw_size)) <= high)) |
303f629d MM |
4127 | { |
4128 | n->sections[i] = s; | |
4129 | ++i; | |
4130 | } | |
252b5132 | 4131 | } |
252b5132 | 4132 | |
303f629d MM |
4133 | *pm = n; |
4134 | } | |
252b5132 RH |
4135 | } |
4136 | ||
4137 | return true; | |
4138 | } | |
4139 | \f | |
4140 | /* The structure of the runtime procedure descriptor created by the | |
4141 | loader for use by the static exception system. */ | |
4142 | ||
4143 | typedef struct runtime_pdr { | |
4144 | bfd_vma adr; /* memory address of start of procedure */ | |
4145 | long regmask; /* save register mask */ | |
4146 | long regoffset; /* save register offset */ | |
4147 | long fregmask; /* save floating point register mask */ | |
4148 | long fregoffset; /* save floating point register offset */ | |
4149 | long frameoffset; /* frame size */ | |
4150 | short framereg; /* frame pointer register */ | |
4151 | short pcreg; /* offset or reg of return pc */ | |
4152 | long irpss; /* index into the runtime string table */ | |
4153 | long reserved; | |
4154 | struct exception_info *exception_info;/* pointer to exception array */ | |
4155 | } RPDR, *pRPDR; | |
be3ccd9c | 4156 | #define cbRPDR sizeof (RPDR) |
252b5132 RH |
4157 | #define rpdNil ((pRPDR) 0) |
4158 | ||
4159 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
4160 | ||
4161 | static void ecoff_swap_rpdr_out | |
4162 | PARAMS ((bfd *, const RPDR *, struct rpdr_ext *)); | |
4163 | ||
4164 | static void | |
4165 | ecoff_swap_rpdr_out (abfd, in, ex) | |
4166 | bfd *abfd; | |
4167 | const RPDR *in; | |
4168 | struct rpdr_ext *ex; | |
4169 | { | |
dc810e39 AM |
4170 | /* ECOFF_PUT_OFF was defined in ecoffswap.h. */ |
4171 | ECOFF_PUT_OFF (abfd, in->adr, ex->p_adr); | |
4172 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
4173 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
4174 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
4175 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
4176 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
4177 | ||
4178 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
4179 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
4180 | ||
4181 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
252b5132 | 4182 | #if 0 /* FIXME */ |
dc810e39 | 4183 | ECOFF_PUT_OFF (abfd, in->exception_info, ex->p_exception_info); |
252b5132 RH |
4184 | #endif |
4185 | } | |
4186 | \f | |
4187 | /* Read ECOFF debugging information from a .mdebug section into a | |
4188 | ecoff_debug_info structure. */ | |
4189 | ||
4190 | boolean | |
4191 | _bfd_mips_elf_read_ecoff_info (abfd, section, debug) | |
4192 | bfd *abfd; | |
4193 | asection *section; | |
4194 | struct ecoff_debug_info *debug; | |
4195 | { | |
4196 | HDRR *symhdr; | |
4197 | const struct ecoff_debug_swap *swap; | |
4198 | char *ext_hdr = NULL; | |
4199 | ||
4200 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
be3ccd9c | 4201 | memset (debug, 0, sizeof (*debug)); |
252b5132 | 4202 | |
dc810e39 | 4203 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
252b5132 RH |
4204 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
4205 | goto error_return; | |
4206 | ||
4207 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
4208 | swap->external_hdr_size) | |
4209 | == false) | |
4210 | goto error_return; | |
4211 | ||
4212 | symhdr = &debug->symbolic_header; | |
4213 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
4214 | ||
4215 | /* The symbolic header contains absolute file offsets and sizes to | |
4216 | read. */ | |
4217 | #define READ(ptr, offset, count, size, type) \ | |
4218 | if (symhdr->count == 0) \ | |
4219 | debug->ptr = NULL; \ | |
4220 | else \ | |
4221 | { \ | |
dc810e39 AM |
4222 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ |
4223 | debug->ptr = (type) bfd_malloc (amt); \ | |
252b5132 RH |
4224 | if (debug->ptr == NULL) \ |
4225 | goto error_return; \ | |
4226 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
dc810e39 | 4227 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
252b5132 RH |
4228 | goto error_return; \ |
4229 | } | |
4230 | ||
4231 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
4232 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
4233 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
4234 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
4235 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
4236 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
4237 | union aux_ext *); | |
4238 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
4239 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
4240 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
4241 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
4242 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
4243 | #undef READ | |
4244 | ||
4245 | debug->fdr = NULL; | |
4246 | debug->adjust = NULL; | |
4247 | ||
4248 | return true; | |
4249 | ||
4250 | error_return: | |
4251 | if (ext_hdr != NULL) | |
4252 | free (ext_hdr); | |
4253 | if (debug->line != NULL) | |
4254 | free (debug->line); | |
4255 | if (debug->external_dnr != NULL) | |
4256 | free (debug->external_dnr); | |
4257 | if (debug->external_pdr != NULL) | |
4258 | free (debug->external_pdr); | |
4259 | if (debug->external_sym != NULL) | |
4260 | free (debug->external_sym); | |
4261 | if (debug->external_opt != NULL) | |
4262 | free (debug->external_opt); | |
4263 | if (debug->external_aux != NULL) | |
4264 | free (debug->external_aux); | |
4265 | if (debug->ss != NULL) | |
4266 | free (debug->ss); | |
4267 | if (debug->ssext != NULL) | |
4268 | free (debug->ssext); | |
4269 | if (debug->external_fdr != NULL) | |
4270 | free (debug->external_fdr); | |
4271 | if (debug->external_rfd != NULL) | |
4272 | free (debug->external_rfd); | |
4273 | if (debug->external_ext != NULL) | |
4274 | free (debug->external_ext); | |
4275 | return false; | |
4276 | } | |
4277 | \f | |
4278 | /* MIPS ELF local labels start with '$', not 'L'. */ | |
4279 | ||
252b5132 RH |
4280 | static boolean |
4281 | mips_elf_is_local_label_name (abfd, name) | |
4282 | bfd *abfd; | |
4283 | const char *name; | |
4284 | { | |
4285 | if (name[0] == '$') | |
4286 | return true; | |
4287 | ||
4288 | /* On Irix 6, the labels go back to starting with '.', so we accept | |
4289 | the generic ELF local label syntax as well. */ | |
4290 | return _bfd_elf_is_local_label_name (abfd, name); | |
4291 | } | |
4292 | ||
4293 | /* MIPS ELF uses a special find_nearest_line routine in order the | |
4294 | handle the ECOFF debugging information. */ | |
4295 | ||
38b1a46c NC |
4296 | struct mips_elf_find_line |
4297 | { | |
252b5132 RH |
4298 | struct ecoff_debug_info d; |
4299 | struct ecoff_find_line i; | |
4300 | }; | |
4301 | ||
4302 | boolean | |
4303 | _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
4304 | functionname_ptr, line_ptr) | |
4305 | bfd *abfd; | |
4306 | asection *section; | |
4307 | asymbol **symbols; | |
4308 | bfd_vma offset; | |
4309 | const char **filename_ptr; | |
4310 | const char **functionname_ptr; | |
4311 | unsigned int *line_ptr; | |
4312 | { | |
4313 | asection *msec; | |
4314 | ||
4315 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4316 | filename_ptr, functionname_ptr, | |
4317 | line_ptr)) | |
4318 | return true; | |
4319 | ||
4320 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4321 | filename_ptr, functionname_ptr, | |
be3ccd9c | 4322 | line_ptr, |
dc810e39 | 4323 | (unsigned) (ABI_64_P (abfd) ? 8 : 0), |
857ec808 | 4324 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
252b5132 RH |
4325 | return true; |
4326 | ||
4327 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
4328 | if (msec != NULL) | |
4329 | { | |
4330 | flagword origflags; | |
4331 | struct mips_elf_find_line *fi; | |
4332 | const struct ecoff_debug_swap * const swap = | |
4333 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4334 | ||
4335 | /* If we are called during a link, mips_elf_final_link may have | |
4336 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
4337 | if appropriate (which it normally will be). */ | |
4338 | origflags = msec->flags; | |
4339 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
4340 | msec->flags |= SEC_HAS_CONTENTS; | |
4341 | ||
4342 | fi = elf_tdata (abfd)->find_line_info; | |
4343 | if (fi == NULL) | |
4344 | { | |
4345 | bfd_size_type external_fdr_size; | |
4346 | char *fraw_src; | |
4347 | char *fraw_end; | |
4348 | struct fdr *fdr_ptr; | |
dc810e39 | 4349 | bfd_size_type amt = sizeof (struct mips_elf_find_line); |
252b5132 | 4350 | |
dc810e39 | 4351 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
252b5132 RH |
4352 | if (fi == NULL) |
4353 | { | |
4354 | msec->flags = origflags; | |
4355 | return false; | |
4356 | } | |
4357 | ||
4358 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
4359 | { | |
4360 | msec->flags = origflags; | |
4361 | return false; | |
4362 | } | |
4363 | ||
4364 | /* Swap in the FDR information. */ | |
dc810e39 AM |
4365 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); |
4366 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
252b5132 RH |
4367 | if (fi->d.fdr == NULL) |
4368 | { | |
4369 | msec->flags = origflags; | |
4370 | return false; | |
4371 | } | |
4372 | external_fdr_size = swap->external_fdr_size; | |
4373 | fdr_ptr = fi->d.fdr; | |
4374 | fraw_src = (char *) fi->d.external_fdr; | |
4375 | fraw_end = (fraw_src | |
4376 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
4377 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
4378 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
4379 | ||
4380 | elf_tdata (abfd)->find_line_info = fi; | |
4381 | ||
4382 | /* Note that we don't bother to ever free this information. | |
4383 | find_nearest_line is either called all the time, as in | |
4384 | objdump -l, so the information should be saved, or it is | |
4385 | rarely called, as in ld error messages, so the memory | |
4386 | wasted is unimportant. Still, it would probably be a | |
4387 | good idea for free_cached_info to throw it away. */ | |
4388 | } | |
4389 | ||
4390 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
4391 | &fi->i, filename_ptr, functionname_ptr, | |
4392 | line_ptr)) | |
4393 | { | |
4394 | msec->flags = origflags; | |
4395 | return true; | |
4396 | } | |
4397 | ||
4398 | msec->flags = origflags; | |
4399 | } | |
4400 | ||
4401 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
4402 | ||
4403 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
4404 | filename_ptr, functionname_ptr, | |
4405 | line_ptr); | |
4406 | } | |
4407 | \f | |
4408 | /* The mips16 compiler uses a couple of special sections to handle | |
4409 | floating point arguments. | |
4410 | ||
4411 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
4412 | copy floating point arguments from the fp regs to the gp regs and | |
4413 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
4414 | call should be redirected to the stub instead. If no 32 bit | |
4415 | function calls FNNAME, the stub should be discarded. We need to | |
4416 | consider any reference to the function, not just a call, because | |
4417 | if the address of the function is taken we will need the stub, | |
4418 | since the address might be passed to a 32 bit function. | |
4419 | ||
4420 | Section names that look like .mips16.call.FNNAME contain stubs | |
4421 | that copy floating point arguments from the gp regs to the fp | |
4422 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
4423 | then any 16 bit function that calls FNNAME should be redirected | |
4424 | to the stub instead. If FNNAME is not a 32 bit function, the | |
4425 | stub should be discarded. | |
4426 | ||
4427 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
4428 | which call FNNAME and then copy the return value from the fp regs | |
4429 | to the gp regs. These stubs store the return value in $18 while | |
4430 | calling FNNAME; any function which might call one of these stubs | |
4431 | must arrange to save $18 around the call. (This case is not | |
4432 | needed for 32 bit functions that call 16 bit functions, because | |
4433 | 16 bit functions always return floating point values in both | |
4434 | $f0/$f1 and $2/$3.) | |
4435 | ||
4436 | Note that in all cases FNNAME might be defined statically. | |
4437 | Therefore, FNNAME is not used literally. Instead, the relocation | |
4438 | information will indicate which symbol the section is for. | |
4439 | ||
4440 | We record any stubs that we find in the symbol table. */ | |
4441 | ||
4442 | #define FN_STUB ".mips16.fn." | |
4443 | #define CALL_STUB ".mips16.call." | |
4444 | #define CALL_FP_STUB ".mips16.call.fp." | |
4445 | ||
252b5132 RH |
4446 | /* MIPS ELF linker hash table. */ |
4447 | ||
38b1a46c NC |
4448 | struct mips_elf_link_hash_table |
4449 | { | |
252b5132 RH |
4450 | struct elf_link_hash_table root; |
4451 | #if 0 | |
4452 | /* We no longer use this. */ | |
4453 | /* String section indices for the dynamic section symbols. */ | |
4454 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
4455 | #endif | |
4456 | /* The number of .rtproc entries. */ | |
4457 | bfd_size_type procedure_count; | |
4458 | /* The size of the .compact_rel section (if SGI_COMPAT). */ | |
4459 | bfd_size_type compact_rel_size; | |
4460 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic | |
be3ccd9c | 4461 | entry is set to the address of __rld_obj_head as in Irix 5. */ |
252b5132 RH |
4462 | boolean use_rld_obj_head; |
4463 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ | |
4464 | bfd_vma rld_value; | |
be3ccd9c | 4465 | /* This is set if we see any mips16 stub sections. */ |
252b5132 RH |
4466 | boolean mips16_stubs_seen; |
4467 | }; | |
4468 | ||
4469 | /* Look up an entry in a MIPS ELF linker hash table. */ | |
4470 | ||
4471 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
4472 | ((struct mips_elf_link_hash_entry *) \ | |
4473 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
4474 | (copy), (follow))) | |
4475 | ||
4476 | /* Traverse a MIPS ELF linker hash table. */ | |
4477 | ||
4478 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
4479 | (elf_link_hash_traverse \ | |
4480 | (&(table)->root, \ | |
4481 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
4482 | (info))) | |
4483 | ||
4484 | /* Get the MIPS ELF linker hash table from a link_info structure. */ | |
4485 | ||
4486 | #define mips_elf_hash_table(p) \ | |
4487 | ((struct mips_elf_link_hash_table *) ((p)->hash)) | |
4488 | ||
4489 | static boolean mips_elf_output_extsym | |
4490 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
4491 | ||
4492 | /* Create an entry in a MIPS ELF linker hash table. */ | |
4493 | ||
4494 | static struct bfd_hash_entry * | |
4495 | mips_elf_link_hash_newfunc (entry, table, string) | |
4496 | struct bfd_hash_entry *entry; | |
4497 | struct bfd_hash_table *table; | |
4498 | const char *string; | |
4499 | { | |
4500 | struct mips_elf_link_hash_entry *ret = | |
4501 | (struct mips_elf_link_hash_entry *) entry; | |
4502 | ||
4503 | /* Allocate the structure if it has not already been allocated by a | |
4504 | subclass. */ | |
4505 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
4506 | ret = ((struct mips_elf_link_hash_entry *) | |
4507 | bfd_hash_allocate (table, | |
4508 | sizeof (struct mips_elf_link_hash_entry))); | |
4509 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
4510 | return (struct bfd_hash_entry *) ret; | |
4511 | ||
4512 | /* Call the allocation method of the superclass. */ | |
4513 | ret = ((struct mips_elf_link_hash_entry *) | |
4514 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
4515 | table, string)); | |
4516 | if (ret != (struct mips_elf_link_hash_entry *) NULL) | |
4517 | { | |
4518 | /* Set local fields. */ | |
4519 | memset (&ret->esym, 0, sizeof (EXTR)); | |
4520 | /* We use -2 as a marker to indicate that the information has | |
4521 | not been set. -1 means there is no associated ifd. */ | |
4522 | ret->esym.ifd = -2; | |
a3c7651d | 4523 | ret->possibly_dynamic_relocs = 0; |
43917054 | 4524 | ret->readonly_reloc = false; |
c6142e5d | 4525 | ret->min_dyn_reloc_index = 0; |
9117d219 | 4526 | ret->no_fn_stub = false; |
252b5132 RH |
4527 | ret->fn_stub = NULL; |
4528 | ret->need_fn_stub = false; | |
4529 | ret->call_stub = NULL; | |
4530 | ret->call_fp_stub = NULL; | |
4531 | } | |
4532 | ||
4533 | return (struct bfd_hash_entry *) ret; | |
4534 | } | |
4535 | ||
9e80ff3a | 4536 | static void |
e5094212 | 4537 | _bfd_mips_elf_hide_symbol (info, entry, force_local) |
b305ef96 | 4538 | struct bfd_link_info *info; |
9e80ff3a | 4539 | struct elf_link_hash_entry *entry; |
e5094212 | 4540 | boolean force_local; |
b305ef96 UC |
4541 | { |
4542 | bfd *dynobj; | |
4543 | asection *got; | |
4544 | struct mips_got_info *g; | |
9e80ff3a L |
4545 | struct mips_elf_link_hash_entry *h; |
4546 | h = (struct mips_elf_link_hash_entry *) entry; | |
b305ef96 UC |
4547 | dynobj = elf_hash_table (info)->dynobj; |
4548 | got = bfd_get_section_by_name (dynobj, ".got"); | |
4549 | g = (struct mips_got_info *) elf_section_data (got)->tdata; | |
4550 | ||
e5094212 | 4551 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); |
b305ef96 UC |
4552 | |
4553 | /* FIXME: Do we allocate too much GOT space here? */ | |
4554 | g->local_gotno++; | |
4555 | got->_raw_size += MIPS_ELF_GOT_SIZE (dynobj); | |
4556 | } | |
4557 | ||
252b5132 RH |
4558 | /* Create a MIPS ELF linker hash table. */ |
4559 | ||
103186c6 MM |
4560 | struct bfd_link_hash_table * |
4561 | _bfd_mips_elf_link_hash_table_create (abfd) | |
252b5132 RH |
4562 | bfd *abfd; |
4563 | { | |
4564 | struct mips_elf_link_hash_table *ret; | |
dc810e39 | 4565 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); |
252b5132 | 4566 | |
dc810e39 | 4567 | ret = (struct mips_elf_link_hash_table *) bfd_alloc (abfd, amt); |
252b5132 RH |
4568 | if (ret == (struct mips_elf_link_hash_table *) NULL) |
4569 | return NULL; | |
4570 | ||
4571 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
4572 | mips_elf_link_hash_newfunc)) | |
4573 | { | |
4574 | bfd_release (abfd, ret); | |
4575 | return NULL; | |
4576 | } | |
4577 | ||
4578 | #if 0 | |
4579 | /* We no longer use this. */ | |
4580 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
4581 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
4582 | #endif | |
4583 | ret->procedure_count = 0; | |
4584 | ret->compact_rel_size = 0; | |
4585 | ret->use_rld_obj_head = false; | |
4586 | ret->rld_value = 0; | |
4587 | ret->mips16_stubs_seen = false; | |
4588 | ||
4589 | return &ret->root.root; | |
4590 | } | |
4591 | ||
4592 | /* Hook called by the linker routine which adds symbols from an object | |
4593 | file. We must handle the special MIPS section numbers here. */ | |
4594 | ||
103186c6 MM |
4595 | boolean |
4596 | _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
252b5132 RH |
4597 | bfd *abfd; |
4598 | struct bfd_link_info *info; | |
4599 | const Elf_Internal_Sym *sym; | |
4600 | const char **namep; | |
5f771d47 | 4601 | flagword *flagsp ATTRIBUTE_UNUSED; |
252b5132 RH |
4602 | asection **secp; |
4603 | bfd_vma *valp; | |
4604 | { | |
4605 | if (SGI_COMPAT (abfd) | |
4606 | && (abfd->flags & DYNAMIC) != 0 | |
4607 | && strcmp (*namep, "_rld_new_interface") == 0) | |
4608 | { | |
4609 | /* Skip Irix 5 rld entry name. */ | |
4610 | *namep = NULL; | |
4611 | return true; | |
4612 | } | |
4613 | ||
4614 | switch (sym->st_shndx) | |
4615 | { | |
4616 | case SHN_COMMON: | |
4617 | /* Common symbols less than the GP size are automatically | |
4618 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7403cb63 MM |
4619 | if (sym->st_size > elf_gp_size (abfd) |
4620 | || IRIX_COMPAT (abfd) == ict_irix6) | |
252b5132 RH |
4621 | break; |
4622 | /* Fall through. */ | |
4623 | case SHN_MIPS_SCOMMON: | |
4624 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
4625 | (*secp)->flags |= SEC_IS_COMMON; | |
4626 | *valp = sym->st_size; | |
4627 | break; | |
4628 | ||
4629 | case SHN_MIPS_TEXT: | |
4630 | /* This section is used in a shared object. */ | |
b305ef96 | 4631 | if (elf_tdata (abfd)->elf_text_section == NULL) |
252b5132 | 4632 | { |
b305ef96 UC |
4633 | asymbol *elf_text_symbol; |
4634 | asection *elf_text_section; | |
dc810e39 | 4635 | bfd_size_type amt = sizeof (asection); |
b305ef96 | 4636 | |
dc810e39 | 4637 | elf_text_section = bfd_zalloc (abfd, amt); |
b305ef96 UC |
4638 | if (elf_text_section == NULL) |
4639 | return false; | |
4640 | ||
dc810e39 AM |
4641 | amt = sizeof (asymbol); |
4642 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
b305ef96 UC |
4643 | if (elf_text_symbol == NULL) |
4644 | return false; | |
4645 | ||
252b5132 | 4646 | /* Initialize the section. */ |
b305ef96 UC |
4647 | |
4648 | elf_tdata (abfd)->elf_text_section = elf_text_section; | |
4649 | elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
4650 | ||
4651 | elf_text_section->symbol = elf_text_symbol; | |
4652 | elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol; | |
4653 | ||
4654 | elf_text_section->name = ".text"; | |
4655 | elf_text_section->flags = SEC_NO_FLAGS; | |
4656 | elf_text_section->output_section = NULL; | |
4657 | elf_text_section->owner = abfd; | |
4658 | elf_text_symbol->name = ".text"; | |
4659 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
4660 | elf_text_symbol->section = elf_text_section; | |
252b5132 RH |
4661 | } |
4662 | /* This code used to do *secp = bfd_und_section_ptr if | |
4663 | info->shared. I don't know why, and that doesn't make sense, | |
4664 | so I took it out. */ | |
b305ef96 | 4665 | *secp = elf_tdata (abfd)->elf_text_section; |
252b5132 RH |
4666 | break; |
4667 | ||
4668 | case SHN_MIPS_ACOMMON: | |
4669 | /* Fall through. XXX Can we treat this as allocated data? */ | |
4670 | case SHN_MIPS_DATA: | |
4671 | /* This section is used in a shared object. */ | |
b305ef96 | 4672 | if (elf_tdata (abfd)->elf_data_section == NULL) |
252b5132 | 4673 | { |
b305ef96 UC |
4674 | asymbol *elf_data_symbol; |
4675 | asection *elf_data_section; | |
dc810e39 | 4676 | bfd_size_type amt = sizeof (asection); |
b305ef96 | 4677 | |
dc810e39 | 4678 | elf_data_section = bfd_zalloc (abfd, amt); |
b305ef96 UC |
4679 | if (elf_data_section == NULL) |
4680 | return false; | |
4681 | ||
dc810e39 AM |
4682 | amt = sizeof (asymbol); |
4683 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
b305ef96 UC |
4684 | if (elf_data_symbol == NULL) |
4685 | return false; | |
4686 | ||
252b5132 | 4687 | /* Initialize the section. */ |
b305ef96 UC |
4688 | |
4689 | elf_tdata (abfd)->elf_data_section = elf_data_section; | |
4690 | elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
4691 | ||
4692 | elf_data_section->symbol = elf_data_symbol; | |
4693 | elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol; | |
4694 | ||
4695 | elf_data_section->name = ".data"; | |
4696 | elf_data_section->flags = SEC_NO_FLAGS; | |
4697 | elf_data_section->output_section = NULL; | |
4698 | elf_data_section->owner = abfd; | |
4699 | elf_data_symbol->name = ".data"; | |
4700 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
4701 | elf_data_symbol->section = elf_data_section; | |
252b5132 RH |
4702 | } |
4703 | /* This code used to do *secp = bfd_und_section_ptr if | |
4704 | info->shared. I don't know why, and that doesn't make sense, | |
4705 | so I took it out. */ | |
b305ef96 | 4706 | *secp = elf_tdata (abfd)->elf_data_section; |
252b5132 RH |
4707 | break; |
4708 | ||
4709 | case SHN_MIPS_SUNDEFINED: | |
4710 | *secp = bfd_und_section_ptr; | |
4711 | break; | |
4712 | } | |
4713 | ||
4714 | if (SGI_COMPAT (abfd) | |
4715 | && ! info->shared | |
4716 | && info->hash->creator == abfd->xvec | |
4717 | && strcmp (*namep, "__rld_obj_head") == 0) | |
4718 | { | |
4719 | struct elf_link_hash_entry *h; | |
4720 | ||
4721 | /* Mark __rld_obj_head as dynamic. */ | |
4722 | h = NULL; | |
4723 | if (! (_bfd_generic_link_add_one_symbol | |
4724 | (info, abfd, *namep, BSF_GLOBAL, *secp, | |
4725 | (bfd_vma) *valp, (const char *) NULL, false, | |
4726 | get_elf_backend_data (abfd)->collect, | |
4727 | (struct bfd_link_hash_entry **) &h))) | |
4728 | return false; | |
be3ccd9c | 4729 | h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; |
252b5132 RH |
4730 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
4731 | h->type = STT_OBJECT; | |
4732 | ||
4733 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
4734 | return false; | |
4735 | ||
4736 | mips_elf_hash_table (info)->use_rld_obj_head = true; | |
4737 | } | |
4738 | ||
4739 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
4740 | odd. This will cause something like .word SYM to come up with | |
4741 | the right value when it is loaded into the PC. */ | |
4742 | if (sym->st_other == STO_MIPS16) | |
4743 | ++*valp; | |
4744 | ||
4745 | return true; | |
4746 | } | |
4747 | ||
4748 | /* Structure used to pass information to mips_elf_output_extsym. */ | |
4749 | ||
38b1a46c NC |
4750 | struct extsym_info |
4751 | { | |
252b5132 RH |
4752 | bfd *abfd; |
4753 | struct bfd_link_info *info; | |
4754 | struct ecoff_debug_info *debug; | |
4755 | const struct ecoff_debug_swap *swap; | |
4756 | boolean failed; | |
4757 | }; | |
4758 | ||
4759 | /* This routine is used to write out ECOFF debugging external symbol | |
4760 | information. It is called via mips_elf_link_hash_traverse. The | |
4761 | ECOFF external symbol information must match the ELF external | |
4762 | symbol information. Unfortunately, at this point we don't know | |
4763 | whether a symbol is required by reloc information, so the two | |
4764 | tables may wind up being different. We must sort out the external | |
4765 | symbol information before we can set the final size of the .mdebug | |
4766 | section, and we must set the size of the .mdebug section before we | |
4767 | can relocate any sections, and we can't know which symbols are | |
4768 | required by relocation until we relocate the sections. | |
4769 | Fortunately, it is relatively unlikely that any symbol will be | |
4770 | stripped but required by a reloc. In particular, it can not happen | |
4771 | when generating a final executable. */ | |
4772 | ||
4773 | static boolean | |
4774 | mips_elf_output_extsym (h, data) | |
4775 | struct mips_elf_link_hash_entry *h; | |
4776 | PTR data; | |
4777 | { | |
4778 | struct extsym_info *einfo = (struct extsym_info *) data; | |
4779 | boolean strip; | |
4780 | asection *sec, *output_section; | |
4781 | ||
4782 | if (h->root.indx == -2) | |
4783 | strip = false; | |
4784 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
4785 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
4786 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
4787 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
4788 | strip = true; | |
4789 | else if (einfo->info->strip == strip_all | |
4790 | || (einfo->info->strip == strip_some | |
4791 | && bfd_hash_lookup (einfo->info->keep_hash, | |
4792 | h->root.root.root.string, | |
4793 | false, false) == NULL)) | |
4794 | strip = true; | |
4795 | else | |
4796 | strip = false; | |
4797 | ||
4798 | if (strip) | |
4799 | return true; | |
4800 | ||
4801 | if (h->esym.ifd == -2) | |
4802 | { | |
4803 | h->esym.jmptbl = 0; | |
4804 | h->esym.cobol_main = 0; | |
4805 | h->esym.weakext = 0; | |
4806 | h->esym.reserved = 0; | |
4807 | h->esym.ifd = ifdNil; | |
4808 | h->esym.asym.value = 0; | |
4809 | h->esym.asym.st = stGlobal; | |
4810 | ||
f7cb7d68 | 4811 | if (h->root.root.type == bfd_link_hash_undefined |
be3ccd9c | 4812 | || h->root.root.type == bfd_link_hash_undefweak) |
252b5132 RH |
4813 | { |
4814 | const char *name; | |
4815 | ||
4816 | /* Use undefined class. Also, set class and type for some | |
4817 | special symbols. */ | |
4818 | name = h->root.root.root.string; | |
4819 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
4820 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
4821 | { | |
4822 | h->esym.asym.sc = scData; | |
4823 | h->esym.asym.st = stLabel; | |
4824 | h->esym.asym.value = 0; | |
4825 | } | |
4826 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
4827 | { | |
4828 | h->esym.asym.sc = scAbs; | |
4829 | h->esym.asym.st = stLabel; | |
4830 | h->esym.asym.value = | |
4831 | mips_elf_hash_table (einfo->info)->procedure_count; | |
4832 | } | |
4833 | else if (strcmp (name, "_gp_disp") == 0) | |
4834 | { | |
4835 | h->esym.asym.sc = scAbs; | |
4836 | h->esym.asym.st = stLabel; | |
4837 | h->esym.asym.value = elf_gp (einfo->abfd); | |
4838 | } | |
4839 | else | |
4840 | h->esym.asym.sc = scUndefined; | |
4841 | } | |
4842 | else if (h->root.root.type != bfd_link_hash_defined | |
4843 | && h->root.root.type != bfd_link_hash_defweak) | |
4844 | h->esym.asym.sc = scAbs; | |
4845 | else | |
4846 | { | |
4847 | const char *name; | |
4848 | ||
4849 | sec = h->root.root.u.def.section; | |
4850 | output_section = sec->output_section; | |
4851 | ||
4852 | /* When making a shared library and symbol h is the one from | |
4853 | the another shared library, OUTPUT_SECTION may be null. */ | |
4854 | if (output_section == NULL) | |
4855 | h->esym.asym.sc = scUndefined; | |
4856 | else | |
4857 | { | |
4858 | name = bfd_section_name (output_section->owner, output_section); | |
4859 | ||
4860 | if (strcmp (name, ".text") == 0) | |
4861 | h->esym.asym.sc = scText; | |
4862 | else if (strcmp (name, ".data") == 0) | |
4863 | h->esym.asym.sc = scData; | |
4864 | else if (strcmp (name, ".sdata") == 0) | |
4865 | h->esym.asym.sc = scSData; | |
4866 | else if (strcmp (name, ".rodata") == 0 | |
4867 | || strcmp (name, ".rdata") == 0) | |
4868 | h->esym.asym.sc = scRData; | |
4869 | else if (strcmp (name, ".bss") == 0) | |
4870 | h->esym.asym.sc = scBss; | |
4871 | else if (strcmp (name, ".sbss") == 0) | |
4872 | h->esym.asym.sc = scSBss; | |
4873 | else if (strcmp (name, ".init") == 0) | |
4874 | h->esym.asym.sc = scInit; | |
4875 | else if (strcmp (name, ".fini") == 0) | |
4876 | h->esym.asym.sc = scFini; | |
4877 | else | |
4878 | h->esym.asym.sc = scAbs; | |
4879 | } | |
4880 | } | |
4881 | ||
4882 | h->esym.asym.reserved = 0; | |
4883 | h->esym.asym.index = indexNil; | |
4884 | } | |
4885 | ||
4886 | if (h->root.root.type == bfd_link_hash_common) | |
4887 | h->esym.asym.value = h->root.root.u.c.size; | |
4888 | else if (h->root.root.type == bfd_link_hash_defined | |
4889 | || h->root.root.type == bfd_link_hash_defweak) | |
4890 | { | |
4891 | if (h->esym.asym.sc == scCommon) | |
4892 | h->esym.asym.sc = scBss; | |
4893 | else if (h->esym.asym.sc == scSCommon) | |
4894 | h->esym.asym.sc = scSBss; | |
4895 | ||
4896 | sec = h->root.root.u.def.section; | |
4897 | output_section = sec->output_section; | |
4898 | if (output_section != NULL) | |
4899 | h->esym.asym.value = (h->root.root.u.def.value | |
4900 | + sec->output_offset | |
4901 | + output_section->vma); | |
4902 | else | |
4903 | h->esym.asym.value = 0; | |
4904 | } | |
4905 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
4906 | { | |
9117d219 NC |
4907 | struct mips_elf_link_hash_entry *hd = h; |
4908 | boolean no_fn_stub = h->no_fn_stub; | |
4909 | ||
4910 | while (hd->root.root.type == bfd_link_hash_indirect) | |
252b5132 | 4911 | { |
9117d219 NC |
4912 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
4913 | no_fn_stub = no_fn_stub || hd->no_fn_stub; | |
252b5132 | 4914 | } |
9117d219 NC |
4915 | |
4916 | if (!no_fn_stub) | |
4917 | { | |
4918 | /* Set type and value for a symbol with a function stub. */ | |
4919 | h->esym.asym.st = stProc; | |
4920 | sec = hd->root.root.u.def.section; | |
4921 | if (sec == NULL) | |
4922 | h->esym.asym.value = 0; | |
4923 | else | |
4924 | { | |
4925 | output_section = sec->output_section; | |
4926 | if (output_section != NULL) | |
4927 | h->esym.asym.value = (hd->root.plt.offset | |
4928 | + sec->output_offset | |
4929 | + output_section->vma); | |
4930 | else | |
4931 | h->esym.asym.value = 0; | |
4932 | } | |
252b5132 | 4933 | #if 0 /* FIXME? */ |
9117d219 | 4934 | h->esym.ifd = 0; |
252b5132 | 4935 | #endif |
9117d219 | 4936 | } |
252b5132 RH |
4937 | } |
4938 | ||
4939 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
4940 | h->root.root.root.string, | |
4941 | &h->esym)) | |
4942 | { | |
4943 | einfo->failed = true; | |
4944 | return false; | |
4945 | } | |
4946 | ||
4947 | return true; | |
4948 | } | |
4949 | ||
4950 | /* Create a runtime procedure table from the .mdebug section. */ | |
4951 | ||
4952 | static boolean | |
4953 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
4954 | PTR handle; | |
4955 | bfd *abfd; | |
4956 | struct bfd_link_info *info; | |
4957 | asection *s; | |
4958 | struct ecoff_debug_info *debug; | |
4959 | { | |
4960 | const struct ecoff_debug_swap *swap; | |
4961 | HDRR *hdr = &debug->symbolic_header; | |
4962 | RPDR *rpdr, *rp; | |
4963 | struct rpdr_ext *erp; | |
4964 | PTR rtproc; | |
4965 | struct pdr_ext *epdr; | |
4966 | struct sym_ext *esym; | |
4967 | char *ss, **sv; | |
4968 | char *str; | |
dc810e39 AM |
4969 | bfd_size_type size; |
4970 | bfd_size_type count; | |
252b5132 RH |
4971 | unsigned long sindex; |
4972 | unsigned long i; | |
4973 | PDR pdr; | |
4974 | SYMR sym; | |
4975 | const char *no_name_func = _("static procedure (no name)"); | |
4976 | ||
4977 | epdr = NULL; | |
4978 | rpdr = NULL; | |
4979 | esym = NULL; | |
4980 | ss = NULL; | |
4981 | sv = NULL; | |
4982 | ||
4983 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4984 | ||
4985 | sindex = strlen (no_name_func) + 1; | |
4986 | count = hdr->ipdMax; | |
4987 | if (count > 0) | |
4988 | { | |
4989 | size = swap->external_pdr_size; | |
4990 | ||
4991 | epdr = (struct pdr_ext *) bfd_malloc (size * count); | |
4992 | if (epdr == NULL) | |
4993 | goto error_return; | |
4994 | ||
4995 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr)) | |
4996 | goto error_return; | |
4997 | ||
4998 | size = sizeof (RPDR); | |
4999 | rp = rpdr = (RPDR *) bfd_malloc (size * count); | |
5000 | if (rpdr == NULL) | |
5001 | goto error_return; | |
5002 | ||
dc810e39 AM |
5003 | size = sizeof (char *); |
5004 | sv = (char **) bfd_malloc (size * count); | |
252b5132 RH |
5005 | if (sv == NULL) |
5006 | goto error_return; | |
5007 | ||
5008 | count = hdr->isymMax; | |
5009 | size = swap->external_sym_size; | |
5010 | esym = (struct sym_ext *) bfd_malloc (size * count); | |
5011 | if (esym == NULL) | |
5012 | goto error_return; | |
5013 | ||
5014 | if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym)) | |
5015 | goto error_return; | |
5016 | ||
5017 | count = hdr->issMax; | |
5018 | ss = (char *) bfd_malloc (count); | |
5019 | if (ss == NULL) | |
5020 | goto error_return; | |
5021 | if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss)) | |
5022 | goto error_return; | |
5023 | ||
5024 | count = hdr->ipdMax; | |
dc810e39 | 5025 | for (i = 0; i < (unsigned long) count; i++, rp++) |
252b5132 RH |
5026 | { |
5027 | (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr); | |
5028 | (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym); | |
5029 | rp->adr = sym.value; | |
5030 | rp->regmask = pdr.regmask; | |
5031 | rp->regoffset = pdr.regoffset; | |
5032 | rp->fregmask = pdr.fregmask; | |
5033 | rp->fregoffset = pdr.fregoffset; | |
5034 | rp->frameoffset = pdr.frameoffset; | |
5035 | rp->framereg = pdr.framereg; | |
5036 | rp->pcreg = pdr.pcreg; | |
5037 | rp->irpss = sindex; | |
5038 | sv[i] = ss + sym.iss; | |
5039 | sindex += strlen (sv[i]) + 1; | |
5040 | } | |
5041 | } | |
5042 | ||
5043 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
5044 | size = BFD_ALIGN (size, 16); | |
5045 | rtproc = (PTR) bfd_alloc (abfd, size); | |
5046 | if (rtproc == NULL) | |
5047 | { | |
5048 | mips_elf_hash_table (info)->procedure_count = 0; | |
5049 | goto error_return; | |
5050 | } | |
5051 | ||
5052 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
5053 | ||
5054 | erp = (struct rpdr_ext *) rtproc; | |
5055 | memset (erp, 0, sizeof (struct rpdr_ext)); | |
5056 | erp++; | |
5057 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
5058 | strcpy (str, no_name_func); | |
5059 | str += strlen (no_name_func) + 1; | |
5060 | for (i = 0; i < count; i++) | |
5061 | { | |
5062 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
5063 | strcpy (str, sv[i]); | |
5064 | str += strlen (sv[i]) + 1; | |
5065 | } | |
dc810e39 | 5066 | ECOFF_PUT_OFF (abfd, -1, (erp + count)->p_adr); |
252b5132 RH |
5067 | |
5068 | /* Set the size and contents of .rtproc section. */ | |
5069 | s->_raw_size = size; | |
5070 | s->contents = (bfd_byte *) rtproc; | |
5071 | ||
5072 | /* Skip this section later on (I don't think this currently | |
5073 | matters, but someday it might). */ | |
5074 | s->link_order_head = (struct bfd_link_order *) NULL; | |
5075 | ||
5076 | if (epdr != NULL) | |
5077 | free (epdr); | |
5078 | if (rpdr != NULL) | |
5079 | free (rpdr); | |
5080 | if (esym != NULL) | |
5081 | free (esym); | |
5082 | if (ss != NULL) | |
5083 | free (ss); | |
5084 | if (sv != NULL) | |
5085 | free (sv); | |
5086 | ||
5087 | return true; | |
5088 | ||
5089 | error_return: | |
5090 | if (epdr != NULL) | |
5091 | free (epdr); | |
5092 | if (rpdr != NULL) | |
5093 | free (rpdr); | |
5094 | if (esym != NULL) | |
5095 | free (esym); | |
5096 | if (ss != NULL) | |
5097 | free (ss); | |
5098 | if (sv != NULL) | |
5099 | free (sv); | |
5100 | return false; | |
5101 | } | |
5102 | ||
5103 | /* A comparison routine used to sort .gptab entries. */ | |
5104 | ||
5105 | static int | |
5106 | gptab_compare (p1, p2) | |
5107 | const PTR p1; | |
5108 | const PTR p2; | |
5109 | { | |
5110 | const Elf32_gptab *a1 = (const Elf32_gptab *) p1; | |
5111 | const Elf32_gptab *a2 = (const Elf32_gptab *) p2; | |
5112 | ||
5113 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
5114 | } | |
5115 | ||
5116 | /* We need to use a special link routine to handle the .reginfo and | |
5117 | the .mdebug sections. We need to merge all instances of these | |
5118 | sections together, not write them all out sequentially. */ | |
5119 | ||
103186c6 MM |
5120 | boolean |
5121 | _bfd_mips_elf_final_link (abfd, info) | |
252b5132 RH |
5122 | bfd *abfd; |
5123 | struct bfd_link_info *info; | |
5124 | { | |
5125 | asection **secpp; | |
5126 | asection *o; | |
5127 | struct bfd_link_order *p; | |
5128 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
5129 | asection *rtproc_sec; | |
5130 | Elf32_RegInfo reginfo; | |
5131 | struct ecoff_debug_info debug; | |
5132 | const struct ecoff_debug_swap *swap | |
5133 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
5134 | HDRR *symhdr = &debug.symbolic_header; | |
5135 | PTR mdebug_handle = NULL; | |
f7cb7d68 UC |
5136 | asection *s; |
5137 | EXTR esym; | |
f7cb7d68 | 5138 | unsigned int i; |
dc810e39 AM |
5139 | bfd_size_type amt; |
5140 | ||
5141 | static const char * const secname[] = | |
38b1a46c | 5142 | { |
be3ccd9c KH |
5143 | ".text", ".init", ".fini", ".data", |
5144 | ".rodata", ".sdata", ".sbss", ".bss" | |
5145 | }; | |
38b1a46c NC |
5146 | static const int sc[] = |
5147 | { | |
be3ccd9c KH |
5148 | scText, scInit, scFini, scData, |
5149 | scRData, scSData, scSBss, scBss | |
5150 | }; | |
252b5132 | 5151 | |
303f629d MM |
5152 | /* If all the things we linked together were PIC, but we're |
5153 | producing an executable (rather than a shared object), then the | |
5154 | resulting file is CPIC (i.e., it calls PIC code.) */ | |
0dda5f7a ILT |
5155 | if (!info->shared |
5156 | && !info->relocateable | |
5157 | && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
252b5132 | 5158 | { |
303f629d MM |
5159 | elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC; |
5160 | elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC; | |
252b5132 RH |
5161 | } |
5162 | ||
b3be9b46 RH |
5163 | /* We'd carefully arranged the dynamic symbol indices, and then the |
5164 | generic size_dynamic_sections renumbered them out from under us. | |
5165 | Rather than trying somehow to prevent the renumbering, just do | |
5166 | the sort again. */ | |
441d6d79 | 5167 | if (elf_hash_table (info)->dynamic_sections_created) |
b3be9b46 RH |
5168 | { |
5169 | bfd *dynobj; | |
5170 | asection *got; | |
5171 | struct mips_got_info *g; | |
5172 | ||
435394bf MM |
5173 | /* When we resort, we must tell mips_elf_sort_hash_table what |
5174 | the lowest index it may use is. That's the number of section | |
5175 | symbols we're going to add. The generic ELF linker only | |
5176 | adds these symbols when building a shared object. Note that | |
5177 | we count the sections after (possibly) removing the .options | |
5178 | section above. */ | |
be3ccd9c | 5179 | if (!mips_elf_sort_hash_table (info, (info->shared |
435394bf MM |
5180 | ? bfd_count_sections (abfd) + 1 |
5181 | : 1))) | |
be3ccd9c | 5182 | return false; |
b3be9b46 RH |
5183 | |
5184 | /* Make sure we didn't grow the global .got region. */ | |
5185 | dynobj = elf_hash_table (info)->dynobj; | |
5186 | got = bfd_get_section_by_name (dynobj, ".got"); | |
5187 | g = (struct mips_got_info *) elf_section_data (got)->tdata; | |
5188 | ||
8b237a89 MM |
5189 | if (g->global_gotsym != NULL) |
5190 | BFD_ASSERT ((elf_hash_table (info)->dynsymcount | |
5191 | - g->global_gotsym->dynindx) | |
5192 | <= g->global_gotno); | |
b3be9b46 RH |
5193 | } |
5194 | ||
303f629d MM |
5195 | /* On IRIX5, we omit the .options section. On IRIX6, however, we |
5196 | include it, even though we don't process it quite right. (Some | |
5197 | entries are supposed to be merged.) Empirically, we seem to be | |
5198 | better off including it then not. */ | |
f7cb7d68 | 5199 | if (IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none) |
303f629d MM |
5200 | for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) |
5201 | { | |
5202 | if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0) | |
5203 | { | |
5204 | for (p = (*secpp)->link_order_head; p != NULL; p = p->next) | |
5205 | if (p->type == bfd_indirect_link_order) | |
be3ccd9c | 5206 | p->u.indirect.section->flags &= ~SEC_HAS_CONTENTS; |
303f629d | 5207 | (*secpp)->link_order_head = NULL; |
9e7b37b3 | 5208 | bfd_section_list_remove (abfd, secpp); |
303f629d | 5209 | --abfd->section_count; |
be3ccd9c | 5210 | |
303f629d MM |
5211 | break; |
5212 | } | |
5213 | } | |
5214 | ||
252b5132 RH |
5215 | /* Get a value for the GP register. */ |
5216 | if (elf_gp (abfd) == 0) | |
5217 | { | |
5218 | struct bfd_link_hash_entry *h; | |
5219 | ||
5220 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
5221 | if (h != (struct bfd_link_hash_entry *) NULL | |
5222 | && h->type == bfd_link_hash_defined) | |
5223 | elf_gp (abfd) = (h->u.def.value | |
5224 | + h->u.def.section->output_section->vma | |
5225 | + h->u.def.section->output_offset); | |
0db63c18 MM |
5226 | else if (info->relocateable) |
5227 | { | |
5228 | bfd_vma lo; | |
5229 | ||
5230 | /* Find the GP-relative section with the lowest offset. */ | |
5231 | lo = (bfd_vma) -1; | |
5232 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
be3ccd9c | 5233 | if (o->vma < lo |
0db63c18 MM |
5234 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) |
5235 | lo = o->vma; | |
5236 | ||
5237 | /* And calculate GP relative to that. */ | |
5238 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd); | |
5239 | } | |
252b5132 RH |
5240 | else |
5241 | { | |
5242 | /* If the relocate_section function needs to do a reloc | |
5243 | involving the GP value, it should make a reloc_dangerous | |
5244 | callback to warn that GP is not defined. */ | |
5245 | } | |
5246 | } | |
5247 | ||
5248 | /* Go through the sections and collect the .reginfo and .mdebug | |
5249 | information. */ | |
5250 | reginfo_sec = NULL; | |
5251 | mdebug_sec = NULL; | |
5252 | gptab_data_sec = NULL; | |
5253 | gptab_bss_sec = NULL; | |
5254 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
5255 | { | |
5256 | if (strcmp (o->name, ".reginfo") == 0) | |
5257 | { | |
5258 | memset (®info, 0, sizeof reginfo); | |
5259 | ||
5260 | /* We have found the .reginfo section in the output file. | |
5261 | Look through all the link_orders comprising it and merge | |
5262 | the information together. */ | |
5263 | for (p = o->link_order_head; | |
5264 | p != (struct bfd_link_order *) NULL; | |
5265 | p = p->next) | |
5266 | { | |
5267 | asection *input_section; | |
5268 | bfd *input_bfd; | |
5269 | Elf32_External_RegInfo ext; | |
5270 | Elf32_RegInfo sub; | |
5271 | ||
5272 | if (p->type != bfd_indirect_link_order) | |
5273 | { | |
fd96f80f | 5274 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5275 | continue; |
5276 | abort (); | |
5277 | } | |
5278 | ||
5279 | input_section = p->u.indirect.section; | |
5280 | input_bfd = input_section->owner; | |
5281 | ||
5282 | /* The linker emulation code has probably clobbered the | |
5283 | size to be zero bytes. */ | |
5284 | if (input_section->_raw_size == 0) | |
5285 | input_section->_raw_size = sizeof (Elf32_External_RegInfo); | |
5286 | ||
5287 | if (! bfd_get_section_contents (input_bfd, input_section, | |
5288 | (PTR) &ext, | |
5289 | (file_ptr) 0, | |
dc810e39 | 5290 | (bfd_size_type) sizeof ext)) |
252b5132 RH |
5291 | return false; |
5292 | ||
5293 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
5294 | ||
5295 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
5296 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
5297 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
5298 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
5299 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
5300 | ||
5301 | /* ri_gp_value is set by the function | |
5302 | mips_elf32_section_processing when the section is | |
5303 | finally written out. */ | |
5304 | ||
5305 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5306 | elf_link_input_bfd ignores this section. */ | |
be3ccd9c | 5307 | input_section->flags &= ~SEC_HAS_CONTENTS; |
252b5132 RH |
5308 | } |
5309 | ||
5310 | /* Size has been set in mips_elf_always_size_sections */ | |
5311 | BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo)); | |
5312 | ||
5313 | /* Skip this section later on (I don't think this currently | |
5314 | matters, but someday it might). */ | |
5315 | o->link_order_head = (struct bfd_link_order *) NULL; | |
5316 | ||
5317 | reginfo_sec = o; | |
5318 | } | |
5319 | ||
5320 | if (strcmp (o->name, ".mdebug") == 0) | |
5321 | { | |
5322 | struct extsym_info einfo; | |
dc810e39 | 5323 | bfd_vma last; |
252b5132 RH |
5324 | |
5325 | /* We have found the .mdebug section in the output file. | |
5326 | Look through all the link_orders comprising it and merge | |
5327 | the information together. */ | |
5328 | symhdr->magic = swap->sym_magic; | |
5329 | /* FIXME: What should the version stamp be? */ | |
5330 | symhdr->vstamp = 0; | |
5331 | symhdr->ilineMax = 0; | |
5332 | symhdr->cbLine = 0; | |
5333 | symhdr->idnMax = 0; | |
5334 | symhdr->ipdMax = 0; | |
5335 | symhdr->isymMax = 0; | |
5336 | symhdr->ioptMax = 0; | |
5337 | symhdr->iauxMax = 0; | |
5338 | symhdr->issMax = 0; | |
5339 | symhdr->issExtMax = 0; | |
5340 | symhdr->ifdMax = 0; | |
5341 | symhdr->crfd = 0; | |
5342 | symhdr->iextMax = 0; | |
5343 | ||
5344 | /* We accumulate the debugging information itself in the | |
5345 | debug_info structure. */ | |
5346 | debug.line = NULL; | |
5347 | debug.external_dnr = NULL; | |
5348 | debug.external_pdr = NULL; | |
5349 | debug.external_sym = NULL; | |
5350 | debug.external_opt = NULL; | |
5351 | debug.external_aux = NULL; | |
5352 | debug.ss = NULL; | |
5353 | debug.ssext = debug.ssext_end = NULL; | |
5354 | debug.external_fdr = NULL; | |
5355 | debug.external_rfd = NULL; | |
5356 | debug.external_ext = debug.external_ext_end = NULL; | |
5357 | ||
5358 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
5359 | if (mdebug_handle == (PTR) NULL) | |
5360 | return false; | |
5361 | ||
be3ccd9c KH |
5362 | esym.jmptbl = 0; |
5363 | esym.cobol_main = 0; | |
5364 | esym.weakext = 0; | |
5365 | esym.reserved = 0; | |
5366 | esym.ifd = ifdNil; | |
5367 | esym.asym.iss = issNil; | |
5368 | esym.asym.st = stLocal; | |
5369 | esym.asym.reserved = 0; | |
5370 | esym.asym.index = indexNil; | |
5371 | last = 0; | |
dc810e39 | 5372 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) |
be3ccd9c KH |
5373 | { |
5374 | esym.asym.sc = sc[i]; | |
dc810e39 | 5375 | s = bfd_get_section_by_name (abfd, secname[i]); |
be3ccd9c KH |
5376 | if (s != NULL) |
5377 | { | |
5378 | esym.asym.value = s->vma; | |
5379 | last = s->vma + s->_raw_size; | |
5380 | } | |
5381 | else | |
5382 | esym.asym.value = last; | |
5383 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
dc810e39 | 5384 | secname[i], &esym)) |
be3ccd9c KH |
5385 | return false; |
5386 | } | |
252b5132 RH |
5387 | |
5388 | for (p = o->link_order_head; | |
5389 | p != (struct bfd_link_order *) NULL; | |
5390 | p = p->next) | |
5391 | { | |
5392 | asection *input_section; | |
5393 | bfd *input_bfd; | |
5394 | const struct ecoff_debug_swap *input_swap; | |
5395 | struct ecoff_debug_info input_debug; | |
5396 | char *eraw_src; | |
5397 | char *eraw_end; | |
5398 | ||
5399 | if (p->type != bfd_indirect_link_order) | |
5400 | { | |
fd96f80f | 5401 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5402 | continue; |
5403 | abort (); | |
5404 | } | |
5405 | ||
5406 | input_section = p->u.indirect.section; | |
5407 | input_bfd = input_section->owner; | |
5408 | ||
5409 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
5410 | || (get_elf_backend_data (input_bfd) | |
5411 | ->elf_backend_ecoff_debug_swap) == NULL) | |
5412 | { | |
5413 | /* I don't know what a non MIPS ELF bfd would be | |
5414 | doing with a .mdebug section, but I don't really | |
5415 | want to deal with it. */ | |
5416 | continue; | |
5417 | } | |
5418 | ||
5419 | input_swap = (get_elf_backend_data (input_bfd) | |
5420 | ->elf_backend_ecoff_debug_swap); | |
5421 | ||
5422 | BFD_ASSERT (p->size == input_section->_raw_size); | |
5423 | ||
5424 | /* The ECOFF linking code expects that we have already | |
5425 | read in the debugging information and set up an | |
5426 | ecoff_debug_info structure, so we do that now. */ | |
5427 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
5428 | &input_debug)) | |
5429 | return false; | |
5430 | ||
5431 | if (! (bfd_ecoff_debug_accumulate | |
5432 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5433 | &input_debug, input_swap, info))) | |
5434 | return false; | |
5435 | ||
5436 | /* Loop through the external symbols. For each one with | |
5437 | interesting information, try to find the symbol in | |
5438 | the linker global hash table and save the information | |
5439 | for the output external symbols. */ | |
5440 | eraw_src = input_debug.external_ext; | |
5441 | eraw_end = (eraw_src | |
5442 | + (input_debug.symbolic_header.iextMax | |
5443 | * input_swap->external_ext_size)); | |
5444 | for (; | |
5445 | eraw_src < eraw_end; | |
5446 | eraw_src += input_swap->external_ext_size) | |
5447 | { | |
5448 | EXTR ext; | |
5449 | const char *name; | |
5450 | struct mips_elf_link_hash_entry *h; | |
5451 | ||
5452 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5453 | if (ext.asym.sc == scNil | |
5454 | || ext.asym.sc == scUndefined | |
5455 | || ext.asym.sc == scSUndefined) | |
5456 | continue; | |
5457 | ||
5458 | name = input_debug.ssext + ext.asym.iss; | |
5459 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
5460 | name, false, false, true); | |
5461 | if (h == NULL || h->esym.ifd != -2) | |
5462 | continue; | |
5463 | ||
5464 | if (ext.ifd != -1) | |
5465 | { | |
5466 | BFD_ASSERT (ext.ifd | |
5467 | < input_debug.symbolic_header.ifdMax); | |
5468 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5469 | } | |
5470 | ||
5471 | h->esym = ext; | |
5472 | } | |
5473 | ||
5474 | /* Free up the information we just read. */ | |
5475 | free (input_debug.line); | |
5476 | free (input_debug.external_dnr); | |
5477 | free (input_debug.external_pdr); | |
5478 | free (input_debug.external_sym); | |
5479 | free (input_debug.external_opt); | |
5480 | free (input_debug.external_aux); | |
5481 | free (input_debug.ss); | |
5482 | free (input_debug.ssext); | |
5483 | free (input_debug.external_fdr); | |
5484 | free (input_debug.external_rfd); | |
5485 | free (input_debug.external_ext); | |
5486 | ||
5487 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5488 | elf_link_input_bfd ignores this section. */ | |
be3ccd9c | 5489 | input_section->flags &= ~SEC_HAS_CONTENTS; |
252b5132 RH |
5490 | } |
5491 | ||
5492 | if (SGI_COMPAT (abfd) && info->shared) | |
5493 | { | |
5494 | /* Create .rtproc section. */ | |
5495 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
5496 | if (rtproc_sec == NULL) | |
5497 | { | |
5498 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5499 | | SEC_LINKER_CREATED | SEC_READONLY); | |
5500 | ||
5501 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); | |
5502 | if (rtproc_sec == NULL | |
5503 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) | |
5504 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) | |
5505 | return false; | |
5506 | } | |
5507 | ||
5508 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
5509 | info, rtproc_sec, &debug)) | |
5510 | return false; | |
5511 | } | |
5512 | ||
5513 | /* Build the external symbol information. */ | |
5514 | einfo.abfd = abfd; | |
5515 | einfo.info = info; | |
5516 | einfo.debug = &debug; | |
5517 | einfo.swap = swap; | |
5518 | einfo.failed = false; | |
5519 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
5520 | mips_elf_output_extsym, | |
5521 | (PTR) &einfo); | |
5522 | if (einfo.failed) | |
5523 | return false; | |
5524 | ||
5525 | /* Set the size of the .mdebug section. */ | |
5526 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
5527 | ||
5528 | /* Skip this section later on (I don't think this currently | |
5529 | matters, but someday it might). */ | |
5530 | o->link_order_head = (struct bfd_link_order *) NULL; | |
5531 | ||
5532 | mdebug_sec = o; | |
5533 | } | |
5534 | ||
5535 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
5536 | { | |
5537 | const char *subname; | |
5538 | unsigned int c; | |
5539 | Elf32_gptab *tab; | |
5540 | Elf32_External_gptab *ext_tab; | |
dc810e39 | 5541 | unsigned int j; |
252b5132 RH |
5542 | |
5543 | /* The .gptab.sdata and .gptab.sbss sections hold | |
5544 | information describing how the small data area would | |
5545 | change depending upon the -G switch. These sections | |
5546 | not used in executables files. */ | |
5547 | if (! info->relocateable) | |
5548 | { | |
252b5132 RH |
5549 | for (p = o->link_order_head; |
5550 | p != (struct bfd_link_order *) NULL; | |
5551 | p = p->next) | |
5552 | { | |
5553 | asection *input_section; | |
5554 | ||
5555 | if (p->type != bfd_indirect_link_order) | |
5556 | { | |
fd96f80f | 5557 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5558 | continue; |
5559 | abort (); | |
5560 | } | |
5561 | ||
5562 | input_section = p->u.indirect.section; | |
5563 | ||
5564 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5565 | elf_link_input_bfd ignores this section. */ | |
be3ccd9c | 5566 | input_section->flags &= ~SEC_HAS_CONTENTS; |
252b5132 RH |
5567 | } |
5568 | ||
5569 | /* Skip this section later on (I don't think this | |
5570 | currently matters, but someday it might). */ | |
5571 | o->link_order_head = (struct bfd_link_order *) NULL; | |
5572 | ||
5573 | /* Really remove the section. */ | |
5574 | for (secpp = &abfd->sections; | |
5575 | *secpp != o; | |
5576 | secpp = &(*secpp)->next) | |
5577 | ; | |
9e7b37b3 | 5578 | bfd_section_list_remove (abfd, secpp); |
252b5132 RH |
5579 | --abfd->section_count; |
5580 | ||
5581 | continue; | |
5582 | } | |
5583 | ||
5584 | /* There is one gptab for initialized data, and one for | |
5585 | uninitialized data. */ | |
5586 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
5587 | gptab_data_sec = o; | |
5588 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
5589 | gptab_bss_sec = o; | |
5590 | else | |
5591 | { | |
5592 | (*_bfd_error_handler) | |
5593 | (_("%s: illegal section name `%s'"), | |
5594 | bfd_get_filename (abfd), o->name); | |
5595 | bfd_set_error (bfd_error_nonrepresentable_section); | |
5596 | return false; | |
5597 | } | |
5598 | ||
5599 | /* The linker script always combines .gptab.data and | |
5600 | .gptab.sdata into .gptab.sdata, and likewise for | |
5601 | .gptab.bss and .gptab.sbss. It is possible that there is | |
5602 | no .sdata or .sbss section in the output file, in which | |
5603 | case we must change the name of the output section. */ | |
5604 | subname = o->name + sizeof ".gptab" - 1; | |
5605 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
5606 | { | |
5607 | if (o == gptab_data_sec) | |
5608 | o->name = ".gptab.data"; | |
5609 | else | |
5610 | o->name = ".gptab.bss"; | |
5611 | subname = o->name + sizeof ".gptab" - 1; | |
5612 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
5613 | } | |
5614 | ||
5615 | /* Set up the first entry. */ | |
5616 | c = 1; | |
dc810e39 AM |
5617 | amt = c * sizeof (Elf32_gptab); |
5618 | tab = (Elf32_gptab *) bfd_malloc (amt); | |
252b5132 RH |
5619 | if (tab == NULL) |
5620 | return false; | |
5621 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); | |
5622 | tab[0].gt_header.gt_unused = 0; | |
5623 | ||
5624 | /* Combine the input sections. */ | |
5625 | for (p = o->link_order_head; | |
5626 | p != (struct bfd_link_order *) NULL; | |
5627 | p = p->next) | |
5628 | { | |
5629 | asection *input_section; | |
5630 | bfd *input_bfd; | |
5631 | bfd_size_type size; | |
5632 | unsigned long last; | |
5633 | bfd_size_type gpentry; | |
5634 | ||
5635 | if (p->type != bfd_indirect_link_order) | |
5636 | { | |
fd96f80f | 5637 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5638 | continue; |
5639 | abort (); | |
5640 | } | |
5641 | ||
5642 | input_section = p->u.indirect.section; | |
5643 | input_bfd = input_section->owner; | |
5644 | ||
5645 | /* Combine the gptab entries for this input section one | |
5646 | by one. We know that the input gptab entries are | |
5647 | sorted by ascending -G value. */ | |
5648 | size = bfd_section_size (input_bfd, input_section); | |
5649 | last = 0; | |
5650 | for (gpentry = sizeof (Elf32_External_gptab); | |
5651 | gpentry < size; | |
5652 | gpentry += sizeof (Elf32_External_gptab)) | |
5653 | { | |
5654 | Elf32_External_gptab ext_gptab; | |
5655 | Elf32_gptab int_gptab; | |
5656 | unsigned long val; | |
5657 | unsigned long add; | |
5658 | boolean exact; | |
5659 | unsigned int look; | |
5660 | ||
5661 | if (! (bfd_get_section_contents | |
5662 | (input_bfd, input_section, (PTR) &ext_gptab, | |
dc810e39 AM |
5663 | (file_ptr) gpentry, |
5664 | (bfd_size_type) sizeof (Elf32_External_gptab)))) | |
252b5132 RH |
5665 | { |
5666 | free (tab); | |
5667 | return false; | |
5668 | } | |
5669 | ||
5670 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
5671 | &int_gptab); | |
5672 | val = int_gptab.gt_entry.gt_g_value; | |
5673 | add = int_gptab.gt_entry.gt_bytes - last; | |
5674 | ||
5675 | exact = false; | |
5676 | for (look = 1; look < c; look++) | |
5677 | { | |
5678 | if (tab[look].gt_entry.gt_g_value >= val) | |
5679 | tab[look].gt_entry.gt_bytes += add; | |
5680 | ||
5681 | if (tab[look].gt_entry.gt_g_value == val) | |
5682 | exact = true; | |
5683 | } | |
5684 | ||
5685 | if (! exact) | |
5686 | { | |
5687 | Elf32_gptab *new_tab; | |
5688 | unsigned int max; | |
5689 | ||
5690 | /* We need a new table entry. */ | |
dc810e39 AM |
5691 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); |
5692 | new_tab = (Elf32_gptab *) bfd_realloc ((PTR) tab, amt); | |
252b5132 RH |
5693 | if (new_tab == NULL) |
5694 | { | |
5695 | free (tab); | |
5696 | return false; | |
5697 | } | |
5698 | tab = new_tab; | |
5699 | tab[c].gt_entry.gt_g_value = val; | |
5700 | tab[c].gt_entry.gt_bytes = add; | |
5701 | ||
5702 | /* Merge in the size for the next smallest -G | |
5703 | value, since that will be implied by this new | |
5704 | value. */ | |
5705 | max = 0; | |
5706 | for (look = 1; look < c; look++) | |
5707 | { | |
5708 | if (tab[look].gt_entry.gt_g_value < val | |
5709 | && (max == 0 | |
5710 | || (tab[look].gt_entry.gt_g_value | |
5711 | > tab[max].gt_entry.gt_g_value))) | |
5712 | max = look; | |
5713 | } | |
5714 | if (max != 0) | |
5715 | tab[c].gt_entry.gt_bytes += | |
5716 | tab[max].gt_entry.gt_bytes; | |
5717 | ||
5718 | ++c; | |
5719 | } | |
5720 | ||
5721 | last = int_gptab.gt_entry.gt_bytes; | |
5722 | } | |
5723 | ||
5724 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5725 | elf_link_input_bfd ignores this section. */ | |
be3ccd9c | 5726 | input_section->flags &= ~SEC_HAS_CONTENTS; |
252b5132 RH |
5727 | } |
5728 | ||
5729 | /* The table must be sorted by -G value. */ | |
5730 | if (c > 2) | |
5731 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
5732 | ||
5733 | /* Swap out the table. */ | |
dc810e39 AM |
5734 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); |
5735 | ext_tab = (Elf32_External_gptab *) bfd_alloc (abfd, amt); | |
252b5132 RH |
5736 | if (ext_tab == NULL) |
5737 | { | |
5738 | free (tab); | |
5739 | return false; | |
5740 | } | |
5741 | ||
dc810e39 AM |
5742 | for (j = 0; j < c; j++) |
5743 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
252b5132 RH |
5744 | free (tab); |
5745 | ||
5746 | o->_raw_size = c * sizeof (Elf32_External_gptab); | |
5747 | o->contents = (bfd_byte *) ext_tab; | |
5748 | ||
5749 | /* Skip this section later on (I don't think this currently | |
5750 | matters, but someday it might). */ | |
5751 | o->link_order_head = (struct bfd_link_order *) NULL; | |
5752 | } | |
5753 | } | |
5754 | ||
5755 | /* Invoke the regular ELF backend linker to do all the work. */ | |
9ebbd33e MM |
5756 | if (ABI_64_P (abfd)) |
5757 | { | |
5758 | #ifdef BFD64 | |
5759 | if (!bfd_elf64_bfd_final_link (abfd, info)) | |
5760 | return false; | |
5761 | #else | |
5762 | abort (); | |
103186c6 | 5763 | return false; |
9ebbd33e MM |
5764 | #endif /* BFD64 */ |
5765 | } | |
5766 | else if (!bfd_elf32_bfd_final_link (abfd, info)) | |
5767 | return false; | |
252b5132 RH |
5768 | |
5769 | /* Now write out the computed sections. */ | |
5770 | ||
5771 | if (reginfo_sec != (asection *) NULL) | |
5772 | { | |
5773 | Elf32_External_RegInfo ext; | |
5774 | ||
5775 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
5776 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, | |
dc810e39 | 5777 | (file_ptr) 0, (bfd_size_type) sizeof ext)) |
252b5132 RH |
5778 | return false; |
5779 | } | |
5780 | ||
5781 | if (mdebug_sec != (asection *) NULL) | |
5782 | { | |
5783 | BFD_ASSERT (abfd->output_has_begun); | |
5784 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5785 | swap, info, | |
5786 | mdebug_sec->filepos)) | |
5787 | return false; | |
5788 | ||
5789 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5790 | } | |
5791 | ||
5792 | if (gptab_data_sec != (asection *) NULL) | |
5793 | { | |
5794 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
5795 | gptab_data_sec->contents, | |
5796 | (file_ptr) 0, | |
5797 | gptab_data_sec->_raw_size)) | |
5798 | return false; | |
5799 | } | |
5800 | ||
5801 | if (gptab_bss_sec != (asection *) NULL) | |
5802 | { | |
5803 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
5804 | gptab_bss_sec->contents, | |
5805 | (file_ptr) 0, | |
5806 | gptab_bss_sec->_raw_size)) | |
5807 | return false; | |
5808 | } | |
5809 | ||
5810 | if (SGI_COMPAT (abfd)) | |
5811 | { | |
5812 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
5813 | if (rtproc_sec != NULL) | |
5814 | { | |
5815 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
5816 | rtproc_sec->contents, | |
5817 | (file_ptr) 0, | |
5818 | rtproc_sec->_raw_size)) | |
5819 | return false; | |
5820 | } | |
5821 | } | |
5822 | ||
5823 | return true; | |
5824 | } | |
5825 | ||
adb76a3e UC |
5826 | /* This function is called via qsort() to sort the dynamic relocation |
5827 | entries by increasing r_symndx value. */ | |
5828 | ||
5829 | static int | |
be3ccd9c KH |
5830 | sort_dynamic_relocs (arg1, arg2) |
5831 | const PTR arg1; | |
5832 | const PTR arg2; | |
adb76a3e UC |
5833 | { |
5834 | const Elf32_External_Rel *ext_reloc1 = (const Elf32_External_Rel *) arg1; | |
5835 | const Elf32_External_Rel *ext_reloc2 = (const Elf32_External_Rel *) arg2; | |
5836 | ||
5837 | Elf_Internal_Rel int_reloc1; | |
5838 | Elf_Internal_Rel int_reloc2; | |
5839 | ||
be3ccd9c KH |
5840 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc1, &int_reloc1); |
5841 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc2, &int_reloc2); | |
adb76a3e | 5842 | |
be3ccd9c | 5843 | return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info)); |
adb76a3e UC |
5844 | } |
5845 | ||
7403cb63 | 5846 | /* Returns the GOT section for ABFD. */ |
252b5132 | 5847 | |
7403cb63 MM |
5848 | static asection * |
5849 | mips_elf_got_section (abfd) | |
5850 | bfd *abfd; | |
252b5132 | 5851 | { |
7403cb63 MM |
5852 | return bfd_get_section_by_name (abfd, ".got"); |
5853 | } | |
5854 | ||
5855 | /* Returns the GOT information associated with the link indicated by | |
be3ccd9c | 5856 | INFO. If SGOTP is non-NULL, it is filled in with the GOT |
7403cb63 MM |
5857 | section. */ |
5858 | ||
5859 | static struct mips_got_info * | |
5860 | mips_elf_got_info (abfd, sgotp) | |
5861 | bfd *abfd; | |
5862 | asection **sgotp; | |
5863 | { | |
5864 | asection *sgot; | |
252b5132 RH |
5865 | struct mips_got_info *g; |
5866 | ||
7403cb63 MM |
5867 | sgot = mips_elf_got_section (abfd); |
5868 | BFD_ASSERT (sgot != NULL); | |
5869 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5870 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
5871 | BFD_ASSERT (g != NULL); | |
252b5132 | 5872 | |
7403cb63 MM |
5873 | if (sgotp) |
5874 | *sgotp = sgot; | |
5875 | return g; | |
5876 | } | |
252b5132 | 5877 | |
6387d602 ILT |
5878 | /* Return whether a relocation is against a local symbol. */ |
5879 | ||
5880 | static boolean | |
b305ef96 UC |
5881 | mips_elf_local_relocation_p (input_bfd, relocation, local_sections, |
5882 | check_forced) | |
6387d602 ILT |
5883 | bfd *input_bfd; |
5884 | const Elf_Internal_Rela *relocation; | |
5885 | asection **local_sections; | |
b305ef96 | 5886 | boolean check_forced; |
6387d602 ILT |
5887 | { |
5888 | unsigned long r_symndx; | |
5889 | Elf_Internal_Shdr *symtab_hdr; | |
be3ccd9c | 5890 | struct mips_elf_link_hash_entry *h; |
b305ef96 | 5891 | size_t extsymoff; |
6387d602 ILT |
5892 | |
5893 | r_symndx = ELF32_R_SYM (relocation->r_info); | |
5894 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
b305ef96 UC |
5895 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; |
5896 | ||
5897 | if (r_symndx < extsymoff) | |
5898 | return true; | |
5899 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) | |
5900 | return true; | |
5901 | ||
5902 | if (check_forced) | |
6387d602 | 5903 | { |
be3ccd9c | 5904 | /* Look up the hash table to check whether the symbol |
b305ef96 | 5905 | was forced local. */ |
be3ccd9c KH |
5906 | h = (struct mips_elf_link_hash_entry *) |
5907 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
5908 | /* Find the real hash-table entry for this symbol. */ | |
5909 | while (h->root.root.type == bfd_link_hash_indirect | |
b305ef96 | 5910 | || h->root.root.type == bfd_link_hash_warning) |
be3ccd9c KH |
5911 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; |
5912 | if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) | |
5913 | return true; | |
6387d602 | 5914 | } |
b305ef96 UC |
5915 | |
5916 | return false; | |
6387d602 ILT |
5917 | } |
5918 | ||
7403cb63 | 5919 | /* Sign-extend VALUE, which has the indicated number of BITS. */ |
252b5132 | 5920 | |
7403cb63 MM |
5921 | static bfd_vma |
5922 | mips_elf_sign_extend (value, bits) | |
5923 | bfd_vma value; | |
5924 | int bits; | |
5925 | { | |
be3ccd9c | 5926 | if (value & ((bfd_vma) 1 << (bits - 1))) |
7403cb63 | 5927 | /* VALUE is negative. */ |
be3ccd9c KH |
5928 | value |= ((bfd_vma) - 1) << bits; |
5929 | ||
7403cb63 MM |
5930 | return value; |
5931 | } | |
252b5132 | 5932 | |
7403cb63 MM |
5933 | /* Return non-zero if the indicated VALUE has overflowed the maximum |
5934 | range expressable by a signed number with the indicated number of | |
5935 | BITS. */ | |
252b5132 | 5936 | |
7403cb63 MM |
5937 | static boolean |
5938 | mips_elf_overflow_p (value, bits) | |
5939 | bfd_vma value; | |
5940 | int bits; | |
5941 | { | |
5942 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
252b5132 | 5943 | |
7403cb63 MM |
5944 | if (svalue > (1 << (bits - 1)) - 1) |
5945 | /* The value is too big. */ | |
5946 | return true; | |
5947 | else if (svalue < -(1 << (bits - 1))) | |
5948 | /* The value is too small. */ | |
5949 | return true; | |
be3ccd9c | 5950 | |
7403cb63 MM |
5951 | /* All is well. */ |
5952 | return false; | |
5953 | } | |
252b5132 | 5954 | |
7403cb63 | 5955 | /* Calculate the %high function. */ |
252b5132 | 5956 | |
7403cb63 MM |
5957 | static bfd_vma |
5958 | mips_elf_high (value) | |
5959 | bfd_vma value; | |
5960 | { | |
5961 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
5962 | } | |
252b5132 | 5963 | |
7403cb63 MM |
5964 | /* Calculate the %higher function. */ |
5965 | ||
5966 | static bfd_vma | |
5967 | mips_elf_higher (value) | |
5f771d47 | 5968 | bfd_vma value ATTRIBUTE_UNUSED; |
7403cb63 MM |
5969 | { |
5970 | #ifdef BFD64 | |
5971 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
5972 | #else | |
5973 | abort (); | |
5974 | return (bfd_vma) -1; | |
5975 | #endif | |
5976 | } | |
5977 | ||
5978 | /* Calculate the %highest function. */ | |
5979 | ||
be3ccd9c | 5980 | static bfd_vma |
7403cb63 | 5981 | mips_elf_highest (value) |
5f771d47 | 5982 | bfd_vma value ATTRIBUTE_UNUSED; |
7403cb63 MM |
5983 | { |
5984 | #ifdef BFD64 | |
0af99795 | 5985 | return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff; |
7403cb63 MM |
5986 | #else |
5987 | abort (); | |
5988 | return (bfd_vma) -1; | |
5989 | #endif | |
5990 | } | |
5991 | ||
5992 | /* Returns the GOT index for the global symbol indicated by H. */ | |
5993 | ||
be3ccd9c | 5994 | static bfd_vma |
7403cb63 MM |
5995 | mips_elf_global_got_index (abfd, h) |
5996 | bfd *abfd; | |
5997 | struct elf_link_hash_entry *h; | |
5998 | { | |
5999 | bfd_vma index; | |
6000 | asection *sgot; | |
6001 | struct mips_got_info *g; | |
6002 | ||
6003 | g = mips_elf_got_info (abfd, &sgot); | |
6004 | ||
6005 | /* Once we determine the global GOT entry with the lowest dynamic | |
6006 | symbol table index, we must put all dynamic symbols with greater | |
6007 | indices into the GOT. That makes it easy to calculate the GOT | |
6008 | offset. */ | |
6009 | BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx); | |
be3ccd9c | 6010 | index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno) |
103186c6 | 6011 | * MIPS_ELF_GOT_SIZE (abfd)); |
7403cb63 MM |
6012 | BFD_ASSERT (index < sgot->_raw_size); |
6013 | ||
6014 | return index; | |
6015 | } | |
6016 | ||
6017 | /* Returns the offset for the entry at the INDEXth position | |
6018 | in the GOT. */ | |
6019 | ||
6020 | static bfd_vma | |
6021 | mips_elf_got_offset_from_index (dynobj, output_bfd, index) | |
6022 | bfd *dynobj; | |
6023 | bfd *output_bfd; | |
6024 | bfd_vma index; | |
6025 | { | |
6026 | asection *sgot; | |
6027 | bfd_vma gp; | |
7403cb63 | 6028 | |
103186c6 | 6029 | sgot = mips_elf_got_section (dynobj); |
7403cb63 | 6030 | gp = _bfd_get_gp_value (output_bfd); |
be3ccd9c | 6031 | return (sgot->output_section->vma + sgot->output_offset + index - |
7403cb63 MM |
6032 | gp); |
6033 | } | |
6034 | ||
6035 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
6036 | symbol table index lower than any we've seen to date, record it for | |
6037 | posterity. */ | |
6038 | ||
6039 | static boolean | |
6040 | mips_elf_record_global_got_symbol (h, info, g) | |
6041 | struct elf_link_hash_entry *h; | |
6042 | struct bfd_link_info *info; | |
5f771d47 | 6043 | struct mips_got_info *g ATTRIBUTE_UNUSED; |
7403cb63 MM |
6044 | { |
6045 | /* A global symbol in the GOT must also be in the dynamic symbol | |
6046 | table. */ | |
6047 | if (h->dynindx == -1 | |
6048 | && !bfd_elf32_link_record_dynamic_symbol (info, h)) | |
6049 | return false; | |
be3ccd9c | 6050 | |
3a6b8597 | 6051 | /* If we've already marked this entry as needing GOT space, we don't |
7403cb63 | 6052 | need to do it again. */ |
3a6b8597 | 6053 | if (h->got.offset != (bfd_vma) -1) |
7403cb63 MM |
6054 | return true; |
6055 | ||
6056 | /* By setting this to a value other than -1, we are indicating that | |
3a6b8597 AM |
6057 | there needs to be a GOT entry for H. Avoid using zero, as the |
6058 | generic ELF copy_indirect_symbol tests for <= 0. */ | |
6059 | h->got.offset = 1; | |
7403cb63 MM |
6060 | |
6061 | return true; | |
6062 | } | |
6063 | ||
6064 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting | |
6065 | the dynamic symbols. */ | |
be3ccd9c | 6066 | |
38b1a46c NC |
6067 | struct mips_elf_hash_sort_data |
6068 | { | |
7403cb63 MM |
6069 | /* The symbol in the global GOT with the lowest dynamic symbol table |
6070 | index. */ | |
6071 | struct elf_link_hash_entry *low; | |
6072 | /* The least dynamic symbol table index corresponding to a symbol | |
6073 | with a GOT entry. */ | |
6074 | long min_got_dynindx; | |
6075 | /* The greatest dynamic symbol table index not corresponding to a | |
6076 | symbol without a GOT entry. */ | |
6077 | long max_non_got_dynindx; | |
6078 | }; | |
6079 | ||
6080 | /* If H needs a GOT entry, assign it the highest available dynamic | |
be3ccd9c | 6081 | index. Otherwise, assign it the lowest available dynamic |
7403cb63 MM |
6082 | index. */ |
6083 | ||
6084 | static boolean | |
6085 | mips_elf_sort_hash_table_f (h, data) | |
6086 | struct mips_elf_link_hash_entry *h; | |
6087 | PTR data; | |
6088 | { | |
be3ccd9c | 6089 | struct mips_elf_hash_sort_data *hsd |
7403cb63 MM |
6090 | = (struct mips_elf_hash_sort_data *) data; |
6091 | ||
6092 | /* Symbols without dynamic symbol table entries aren't interesting | |
6093 | at all. */ | |
6094 | if (h->root.dynindx == -1) | |
6095 | return true; | |
6096 | ||
3a6b8597 | 6097 | if (h->root.got.offset != 1) |
7403cb63 MM |
6098 | h->root.dynindx = hsd->max_non_got_dynindx++; |
6099 | else | |
6100 | { | |
6101 | h->root.dynindx = --hsd->min_got_dynindx; | |
6102 | hsd->low = (struct elf_link_hash_entry *) h; | |
6103 | } | |
6104 | ||
6105 | return true; | |
6106 | } | |
6107 | ||
6108 | /* Sort the dynamic symbol table so that symbols that need GOT entries | |
6109 | appear towards the end. This reduces the amount of GOT space | |
b3be9b46 RH |
6110 | required. MAX_LOCAL is used to set the number of local symbols |
6111 | known to be in the dynamic symbol table. During | |
6112 | mips_elf_size_dynamic_sections, this value is 1. Afterward, the | |
6113 | section symbols are added and the count is higher. */ | |
7403cb63 MM |
6114 | |
6115 | static boolean | |
b3be9b46 | 6116 | mips_elf_sort_hash_table (info, max_local) |
7403cb63 | 6117 | struct bfd_link_info *info; |
b3be9b46 | 6118 | unsigned long max_local; |
7403cb63 MM |
6119 | { |
6120 | struct mips_elf_hash_sort_data hsd; | |
6121 | struct mips_got_info *g; | |
6122 | bfd *dynobj; | |
6123 | ||
6124 | dynobj = elf_hash_table (info)->dynobj; | |
6125 | ||
6126 | hsd.low = NULL; | |
6127 | hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount; | |
b3be9b46 | 6128 | hsd.max_non_got_dynindx = max_local; |
be3ccd9c KH |
6129 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) |
6130 | elf_hash_table (info)), | |
6131 | mips_elf_sort_hash_table_f, | |
7403cb63 MM |
6132 | &hsd); |
6133 | ||
7e766c3b | 6134 | /* There should have been enough room in the symbol table to |
7403cb63 | 6135 | accomodate both the GOT and non-GOT symbols. */ |
b305ef96 | 6136 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
7403cb63 MM |
6137 | |
6138 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
6139 | table index in the GOT. */ | |
6140 | g = mips_elf_got_info (dynobj, NULL); | |
6141 | g->global_gotsym = hsd.low; | |
6142 | ||
6143 | return true; | |
6144 | } | |
6145 | ||
6146 | /* Create a local GOT entry for VALUE. Return the index of the entry, | |
6147 | or -1 if it could not be created. */ | |
6148 | ||
6149 | static bfd_vma | |
6150 | mips_elf_create_local_got_entry (abfd, g, sgot, value) | |
6151 | bfd *abfd; | |
6152 | struct mips_got_info *g; | |
6153 | asection *sgot; | |
6154 | bfd_vma value; | |
6155 | { | |
6156 | if (g->assigned_gotno >= g->local_gotno) | |
6157 | { | |
6158 | /* We didn't allocate enough space in the GOT. */ | |
6159 | (*_bfd_error_handler) | |
6160 | (_("not enough GOT space for local GOT entries")); | |
6161 | bfd_set_error (bfd_error_bad_value); | |
6162 | return (bfd_vma) -1; | |
6163 | } | |
6164 | ||
103186c6 | 6165 | MIPS_ELF_PUT_WORD (abfd, value, |
be3ccd9c | 6166 | (sgot->contents |
103186c6 MM |
6167 | + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno)); |
6168 | return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; | |
7403cb63 MM |
6169 | } |
6170 | ||
6171 | /* Returns the GOT offset at which the indicated address can be found. | |
6172 | If there is not yet a GOT entry for this value, create one. Returns | |
6173 | -1 if no satisfactory GOT offset can be found. */ | |
6174 | ||
6175 | static bfd_vma | |
6176 | mips_elf_local_got_index (abfd, info, value) | |
6177 | bfd *abfd; | |
6178 | struct bfd_link_info *info; | |
6179 | bfd_vma value; | |
6180 | { | |
6181 | asection *sgot; | |
6182 | struct mips_got_info *g; | |
6183 | bfd_byte *entry; | |
6184 | ||
6185 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
6186 | ||
6187 | /* Look to see if we already have an appropriate entry. */ | |
be3ccd9c KH |
6188 | for (entry = (sgot->contents |
6189 | + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO); | |
103186c6 MM |
6190 | entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno; |
6191 | entry += MIPS_ELF_GOT_SIZE (abfd)) | |
7403cb63 | 6192 | { |
103186c6 | 6193 | bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry); |
7403cb63 MM |
6194 | if (address == value) |
6195 | return entry - sgot->contents; | |
6196 | } | |
6197 | ||
6198 | return mips_elf_create_local_got_entry (abfd, g, sgot, value); | |
6199 | } | |
6200 | ||
6201 | /* Find a GOT entry that is within 32KB of the VALUE. These entries | |
6202 | are supposed to be placed at small offsets in the GOT, i.e., | |
6203 | within 32KB of GP. Return the index into the GOT for this page, | |
6204 | and store the offset from this entry to the desired address in | |
6205 | OFFSETP, if it is non-NULL. */ | |
6206 | ||
6207 | static bfd_vma | |
6208 | mips_elf_got_page (abfd, info, value, offsetp) | |
6209 | bfd *abfd; | |
6210 | struct bfd_link_info *info; | |
6211 | bfd_vma value; | |
6212 | bfd_vma *offsetp; | |
6213 | { | |
6214 | asection *sgot; | |
6215 | struct mips_got_info *g; | |
6216 | bfd_byte *entry; | |
6217 | bfd_byte *last_entry; | |
86033394 | 6218 | bfd_vma index = 0; |
7403cb63 MM |
6219 | bfd_vma address; |
6220 | ||
6221 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
6222 | ||
6223 | /* Look to see if we aleady have an appropriate entry. */ | |
103186c6 | 6224 | last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno; |
be3ccd9c | 6225 | for (entry = (sgot->contents |
103186c6 | 6226 | + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO); |
7403cb63 | 6227 | entry != last_entry; |
103186c6 | 6228 | entry += MIPS_ELF_GOT_SIZE (abfd)) |
7403cb63 | 6229 | { |
103186c6 MM |
6230 | address = MIPS_ELF_GET_WORD (abfd, entry); |
6231 | ||
7403cb63 MM |
6232 | if (!mips_elf_overflow_p (value - address, 16)) |
6233 | { | |
6234 | /* This entry will serve as the page pointer. We can add a | |
6235 | 16-bit number to it to get the actual address. */ | |
6236 | index = entry - sgot->contents; | |
6237 | break; | |
252b5132 | 6238 | } |
7403cb63 MM |
6239 | } |
6240 | ||
6241 | /* If we didn't have an appropriate entry, we create one now. */ | |
6242 | if (entry == last_entry) | |
6243 | index = mips_elf_create_local_got_entry (abfd, g, sgot, value); | |
6244 | ||
6245 | if (offsetp) | |
6246 | { | |
103186c6 | 6247 | address = MIPS_ELF_GET_WORD (abfd, entry); |
7403cb63 MM |
6248 | *offsetp = value - address; |
6249 | } | |
6250 | ||
6251 | return index; | |
6252 | } | |
6253 | ||
6254 | /* Find a GOT entry whose higher-order 16 bits are the same as those | |
6255 | for value. Return the index into the GOT for this entry. */ | |
6256 | ||
6257 | static bfd_vma | |
b305ef96 | 6258 | mips_elf_got16_entry (abfd, info, value, external) |
7403cb63 MM |
6259 | bfd *abfd; |
6260 | struct bfd_link_info *info; | |
6261 | bfd_vma value; | |
b305ef96 | 6262 | boolean external; |
7403cb63 MM |
6263 | { |
6264 | asection *sgot; | |
6265 | struct mips_got_info *g; | |
6266 | bfd_byte *entry; | |
6267 | bfd_byte *last_entry; | |
86033394 | 6268 | bfd_vma index = 0; |
7403cb63 MM |
6269 | bfd_vma address; |
6270 | ||
b305ef96 UC |
6271 | if (! external) |
6272 | { | |
6273 | /* Although the ABI says that it is "the high-order 16 bits" that we | |
6274 | want, it is really the %high value. The complete value is | |
6275 | calculated with a `addiu' of a LO16 relocation, just as with a | |
6276 | HI16/LO16 pair. */ | |
6277 | value = mips_elf_high (value) << 16; | |
6278 | } | |
6279 | ||
7403cb63 MM |
6280 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); |
6281 | ||
6282 | /* Look to see if we already have an appropriate entry. */ | |
103186c6 | 6283 | last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno; |
be3ccd9c | 6284 | for (entry = (sgot->contents |
103186c6 | 6285 | + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO); |
7403cb63 | 6286 | entry != last_entry; |
103186c6 | 6287 | entry += MIPS_ELF_GOT_SIZE (abfd)) |
7403cb63 | 6288 | { |
103186c6 | 6289 | address = MIPS_ELF_GET_WORD (abfd, entry); |
b305ef96 | 6290 | if (address == value) |
252b5132 | 6291 | { |
b305ef96 UC |
6292 | /* This entry has the right high-order 16 bits, and the low-order |
6293 | 16 bits are set to zero. */ | |
4f2860ca | 6294 | index = entry - sgot->contents; |
7403cb63 MM |
6295 | break; |
6296 | } | |
6297 | } | |
6298 | ||
6299 | /* If we didn't have an appropriate entry, we create one now. */ | |
6300 | if (entry == last_entry) | |
6301 | index = mips_elf_create_local_got_entry (abfd, g, sgot, value); | |
6302 | ||
6303 | return index; | |
6304 | } | |
6305 | ||
bb2d6cd7 | 6306 | /* Returns the first relocation of type r_type found, beginning with |
23b255aa | 6307 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ |
7403cb63 | 6308 | |
23b255aa | 6309 | static const Elf_Internal_Rela * |
bb2d6cd7 GK |
6310 | mips_elf_next_relocation (r_type, relocation, relend) |
6311 | unsigned int r_type; | |
103186c6 MM |
6312 | const Elf_Internal_Rela *relocation; |
6313 | const Elf_Internal_Rela *relend; | |
7403cb63 MM |
6314 | { |
6315 | /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be | |
6316 | immediately following. However, for the IRIX6 ABI, the next | |
6317 | relocation may be a composed relocation consisting of several | |
6318 | relocations for the same address. In that case, the R_MIPS_LO16 | |
435394bf | 6319 | relocation may occur as one of these. We permit a similar |
7403cb63 MM |
6320 | extension in general, as that is useful for GCC. */ |
6321 | while (relocation < relend) | |
6322 | { | |
bb2d6cd7 | 6323 | if (ELF32_R_TYPE (relocation->r_info) == r_type) |
23b255aa | 6324 | return relocation; |
7403cb63 MM |
6325 | |
6326 | ++relocation; | |
6327 | } | |
6328 | ||
6329 | /* We didn't find it. */ | |
6387d602 | 6330 | bfd_set_error (bfd_error_bad_value); |
23b255aa | 6331 | return NULL; |
7403cb63 MM |
6332 | } |
6333 | ||
7b1f1231 MM |
6334 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
6335 | is the original relocation, which is now being transformed into a | |
b305ef96 | 6336 | dynamic relocation. The ADDENDP is adjusted if necessary; the |
7b1f1231 | 6337 | caller should store the result in place of the original addend. */ |
7403cb63 | 6338 | |
7b1f1231 MM |
6339 | static boolean |
6340 | mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec, | |
9117d219 | 6341 | symbol, addendp, input_section) |
7403cb63 MM |
6342 | bfd *output_bfd; |
6343 | struct bfd_link_info *info; | |
103186c6 | 6344 | const Elf_Internal_Rela *rel; |
7b1f1231 MM |
6345 | struct mips_elf_link_hash_entry *h; |
6346 | asection *sec; | |
6347 | bfd_vma symbol; | |
6348 | bfd_vma *addendp; | |
7403cb63 MM |
6349 | asection *input_section; |
6350 | { | |
6351 | Elf_Internal_Rel outrel; | |
6352 | boolean skip; | |
6353 | asection *sreloc; | |
6354 | bfd *dynobj; | |
6355 | int r_type; | |
6356 | ||
6357 | r_type = ELF32_R_TYPE (rel->r_info); | |
6358 | dynobj = elf_hash_table (info)->dynobj; | |
be3ccd9c | 6359 | sreloc |
103186c6 MM |
6360 | = bfd_get_section_by_name (dynobj, |
6361 | MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)); | |
7403cb63 | 6362 | BFD_ASSERT (sreloc != NULL); |
b305ef96 | 6363 | BFD_ASSERT (sreloc->contents != NULL); |
14d5043a L |
6364 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) |
6365 | < sreloc->_raw_size); | |
7403cb63 MM |
6366 | |
6367 | skip = false; | |
c629eae0 JJ |
6368 | outrel.r_offset = |
6369 | _bfd_elf_section_offset (output_bfd, info, input_section, rel->r_offset); | |
6370 | if (outrel.r_offset == (bfd_vma) -1) | |
6371 | skip = true; | |
0bb2d96a JJ |
6372 | /* FIXME: For -2 runtime relocation needs to be skipped, but |
6373 | properly resolved statically and installed. */ | |
6374 | BFD_ASSERT (outrel.r_offset != (bfd_vma) -2); | |
7403cb63 | 6375 | |
b305ef96 | 6376 | /* If we've decided to skip this relocation, just output an empty |
7b1f1231 MM |
6377 | record. Note that R_MIPS_NONE == 0, so that this call to memset |
6378 | is a way of setting R_TYPE to R_MIPS_NONE. */ | |
7403cb63 MM |
6379 | if (skip) |
6380 | memset (&outrel, 0, sizeof (outrel)); | |
7b1f1231 MM |
6381 | else |
6382 | { | |
6383 | long indx; | |
6384 | bfd_vma section_offset; | |
6385 | ||
6386 | /* We must now calculate the dynamic symbol table index to use | |
6387 | in the relocation. */ | |
6388 | if (h != NULL | |
6389 | && (! info->symbolic || (h->root.elf_link_hash_flags | |
6390 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
6391 | { | |
6392 | indx = h->root.dynindx; | |
b305ef96 UC |
6393 | /* h->root.dynindx may be -1 if this symbol was marked to |
6394 | become local. */ | |
6395 | if (indx == -1) | |
be3ccd9c | 6396 | indx = 0; |
7b1f1231 MM |
6397 | } |
6398 | else | |
6399 | { | |
6400 | if (sec != NULL && bfd_is_abs_section (sec)) | |
6401 | indx = 0; | |
6402 | else if (sec == NULL || sec->owner == NULL) | |
6403 | { | |
6404 | bfd_set_error (bfd_error_bad_value); | |
6405 | return false; | |
6406 | } | |
6407 | else | |
6408 | { | |
6409 | indx = elf_section_data (sec->output_section)->dynindx; | |
6410 | if (indx == 0) | |
6411 | abort (); | |
6412 | } | |
6413 | ||
6414 | /* Figure out how far the target of the relocation is from | |
6415 | the beginning of its section. */ | |
6416 | section_offset = symbol - sec->output_section->vma; | |
6417 | /* The relocation we're building is section-relative. | |
6418 | Therefore, the original addend must be adjusted by the | |
6419 | section offset. */ | |
9117d219 | 6420 | *addendp += section_offset; |
7b1f1231 MM |
6421 | /* Now, the relocation is just against the section. */ |
6422 | symbol = sec->output_section->vma; | |
6423 | } | |
be3ccd9c | 6424 | |
9117d219 NC |
6425 | /* If the relocation was previously an absolute relocation and |
6426 | this symbol will not be referred to by the relocation, we must | |
6427 | adjust it by the value we give it in the dynamic symbol table. | |
6428 | Otherwise leave the job up to the dynamic linker. */ | |
6429 | if (!indx && r_type != R_MIPS_REL32) | |
7b1f1231 MM |
6430 | *addendp += symbol; |
6431 | ||
6432 | /* The relocation is always an REL32 relocation because we don't | |
6433 | know where the shared library will wind up at load-time. */ | |
6434 | outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32); | |
6435 | ||
6436 | /* Adjust the output offset of the relocation to reference the | |
6437 | correct location in the output file. */ | |
6438 | outrel.r_offset += (input_section->output_section->vma | |
6439 | + input_section->output_offset); | |
6440 | } | |
7403cb63 | 6441 | |
7b1f1231 MM |
6442 | /* Put the relocation back out. We have to use the special |
6443 | relocation outputter in the 64-bit case since the 64-bit | |
6444 | relocation format is non-standard. */ | |
103186c6 MM |
6445 | if (ABI_64_P (output_bfd)) |
6446 | { | |
6447 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6448 | (output_bfd, &outrel, | |
be3ccd9c | 6449 | (sreloc->contents |
103186c6 MM |
6450 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); |
6451 | } | |
6452 | else | |
6453 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
6454 | (((Elf32_External_Rel *) | |
6455 | sreloc->contents) | |
6456 | + sreloc->reloc_count)); | |
7b1f1231 MM |
6457 | |
6458 | /* Record the index of the first relocation referencing H. This | |
6459 | information is later emitted in the .msym section. */ | |
6460 | if (h != NULL | |
be3ccd9c | 6461 | && (h->min_dyn_reloc_index == 0 |
7b1f1231 MM |
6462 | || sreloc->reloc_count < h->min_dyn_reloc_index)) |
6463 | h->min_dyn_reloc_index = sreloc->reloc_count; | |
6464 | ||
6465 | /* We've now added another relocation. */ | |
7403cb63 MM |
6466 | ++sreloc->reloc_count; |
6467 | ||
6468 | /* Make sure the output section is writable. The dynamic linker | |
6469 | will be writing to it. */ | |
6470 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6471 | |= SHF_WRITE; | |
6472 | ||
6473 | /* On IRIX5, make an entry of compact relocation info. */ | |
6474 | if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5) | |
6475 | { | |
be3ccd9c | 6476 | asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); |
7403cb63 MM |
6477 | bfd_byte *cr; |
6478 | ||
6479 | if (scpt) | |
6480 | { | |
6481 | Elf32_crinfo cptrel; | |
6482 | ||
6483 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6484 | cptrel.vaddr = (rel->r_offset | |
6485 | + input_section->output_section->vma | |
6486 | + input_section->output_offset); | |
6487 | if (r_type == R_MIPS_REL32) | |
6488 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
252b5132 | 6489 | else |
7403cb63 MM |
6490 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); |
6491 | mips_elf_set_cr_dist2to (cptrel, 0); | |
7b1f1231 | 6492 | cptrel.konst = *addendp; |
7403cb63 MM |
6493 | |
6494 | cr = (scpt->contents | |
6495 | + sizeof (Elf32_External_compact_rel)); | |
6496 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
6497 | ((Elf32_External_crinfo *) cr | |
6498 | + scpt->reloc_count)); | |
6499 | ++scpt->reloc_count; | |
6500 | } | |
6501 | } | |
252b5132 | 6502 | |
7b1f1231 | 6503 | return true; |
7403cb63 | 6504 | } |
252b5132 | 6505 | |
7403cb63 MM |
6506 | /* Calculate the value produced by the RELOCATION (which comes from |
6507 | the INPUT_BFD). The ADDEND is the addend to use for this | |
6508 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
6509 | ||
6510 | The result of the relocation calculation is stored in VALUEP. | |
197b9ca0 MM |
6511 | REQUIRE_JALXP indicates whether or not the opcode used with this |
6512 | relocation must be JALX. | |
7403cb63 MM |
6513 | |
6514 | This function returns bfd_reloc_continue if the caller need take no | |
6515 | further action regarding this relocation, bfd_reloc_notsupported if | |
6516 | something goes dramatically wrong, bfd_reloc_overflow if an | |
6517 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
6518 | ||
6519 | static bfd_reloc_status_type | |
be3ccd9c | 6520 | mips_elf_calculate_relocation (abfd, |
7403cb63 MM |
6521 | input_bfd, |
6522 | input_section, | |
6523 | info, | |
6524 | relocation, | |
6525 | addend, | |
6526 | howto, | |
7403cb63 MM |
6527 | local_syms, |
6528 | local_sections, | |
6529 | valuep, | |
197b9ca0 | 6530 | namep, |
be3ccd9c | 6531 | require_jalxp) |
7403cb63 MM |
6532 | bfd *abfd; |
6533 | bfd *input_bfd; | |
6534 | asection *input_section; | |
6535 | struct bfd_link_info *info; | |
103186c6 | 6536 | const Elf_Internal_Rela *relocation; |
7403cb63 MM |
6537 | bfd_vma addend; |
6538 | reloc_howto_type *howto; | |
7403cb63 MM |
6539 | Elf_Internal_Sym *local_syms; |
6540 | asection **local_sections; | |
6541 | bfd_vma *valuep; | |
6542 | const char **namep; | |
197b9ca0 | 6543 | boolean *require_jalxp; |
7403cb63 MM |
6544 | { |
6545 | /* The eventual value we will return. */ | |
6546 | bfd_vma value; | |
6547 | /* The address of the symbol against which the relocation is | |
6548 | occurring. */ | |
6549 | bfd_vma symbol = 0; | |
6550 | /* The final GP value to be used for the relocatable, executable, or | |
6551 | shared object file being produced. */ | |
6552 | bfd_vma gp = (bfd_vma) - 1; | |
6553 | /* The place (section offset or address) of the storage unit being | |
6554 | relocated. */ | |
6555 | bfd_vma p; | |
6556 | /* The value of GP used to create the relocatable object. */ | |
6557 | bfd_vma gp0 = (bfd_vma) - 1; | |
6558 | /* The offset into the global offset table at which the address of | |
6559 | the relocation entry symbol, adjusted by the addend, resides | |
6560 | during execution. */ | |
6561 | bfd_vma g = (bfd_vma) - 1; | |
6562 | /* The section in which the symbol referenced by the relocation is | |
6563 | located. */ | |
6564 | asection *sec = NULL; | |
be3ccd9c | 6565 | struct mips_elf_link_hash_entry *h = NULL; |
103186c6 MM |
6566 | /* True if the symbol referred to by this relocation is a local |
6567 | symbol. */ | |
7403cb63 | 6568 | boolean local_p; |
103186c6 | 6569 | /* True if the symbol referred to by this relocation is "_gp_disp". */ |
7403cb63 MM |
6570 | boolean gp_disp_p = false; |
6571 | Elf_Internal_Shdr *symtab_hdr; | |
6572 | size_t extsymoff; | |
103186c6 | 6573 | unsigned long r_symndx; |
7403cb63 | 6574 | int r_type; |
103186c6 MM |
6575 | /* True if overflow occurred during the calculation of the |
6576 | relocation value. */ | |
7403cb63 | 6577 | boolean overflowed_p; |
197b9ca0 MM |
6578 | /* True if this relocation refers to a MIPS16 function. */ |
6579 | boolean target_is_16_bit_code_p = false; | |
7403cb63 MM |
6580 | |
6581 | /* Parse the relocation. */ | |
6582 | r_symndx = ELF32_R_SYM (relocation->r_info); | |
6583 | r_type = ELF32_R_TYPE (relocation->r_info); | |
be3ccd9c | 6584 | p = (input_section->output_section->vma |
7403cb63 MM |
6585 | + input_section->output_offset |
6586 | + relocation->r_offset); | |
6587 | ||
6588 | /* Assume that there will be no overflow. */ | |
6589 | overflowed_p = false; | |
6590 | ||
6387d602 ILT |
6591 | /* Figure out whether or not the symbol is local, and get the offset |
6592 | used in the array of hash table entries. */ | |
7403cb63 | 6593 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6387d602 | 6594 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, |
b305ef96 | 6595 | local_sections, false); |
6387d602 ILT |
6596 | if (! elf_bad_symtab (input_bfd)) |
6597 | extsymoff = symtab_hdr->sh_info; | |
6598 | else | |
7403cb63 MM |
6599 | { |
6600 | /* The symbol table does not follow the rule that local symbols | |
6601 | must come before globals. */ | |
6602 | extsymoff = 0; | |
7403cb63 | 6603 | } |
be3ccd9c | 6604 | |
7403cb63 MM |
6605 | /* Figure out the value of the symbol. */ |
6606 | if (local_p) | |
6607 | { | |
6608 | Elf_Internal_Sym *sym; | |
6609 | ||
6610 | sym = local_syms + r_symndx; | |
6611 | sec = local_sections[r_symndx]; | |
6612 | ||
6613 | symbol = sec->output_section->vma + sec->output_offset; | |
6614 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
6615 | symbol += sym->st_value; | |
6616 | ||
6617 | /* MIPS16 text labels should be treated as odd. */ | |
6618 | if (sym->st_other == STO_MIPS16) | |
6619 | ++symbol; | |
6620 | ||
6621 | /* Record the name of this symbol, for our caller. */ | |
6622 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
6623 | symtab_hdr->sh_link, | |
6624 | sym->st_name); | |
e049a0de | 6625 | if (*namep == '\0') |
7403cb63 | 6626 | *namep = bfd_section_name (input_bfd, sec); |
197b9ca0 MM |
6627 | |
6628 | target_is_16_bit_code_p = (sym->st_other == STO_MIPS16); | |
7403cb63 MM |
6629 | } |
6630 | else | |
6631 | { | |
6632 | /* For global symbols we look up the symbol in the hash-table. */ | |
be3ccd9c | 6633 | h = ((struct mips_elf_link_hash_entry *) |
7403cb63 MM |
6634 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); |
6635 | /* Find the real hash-table entry for this symbol. */ | |
b305ef96 UC |
6636 | while (h->root.root.type == bfd_link_hash_indirect |
6637 | || h->root.root.type == bfd_link_hash_warning) | |
7403cb63 | 6638 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; |
be3ccd9c | 6639 | |
7403cb63 MM |
6640 | /* Record the name of this symbol, for our caller. */ |
6641 | *namep = h->root.root.root.string; | |
6642 | ||
6643 | /* See if this is the special _gp_disp symbol. Note that such a | |
6644 | symbol must always be a global symbol. */ | |
6645 | if (strcmp (h->root.root.root.string, "_gp_disp") == 0) | |
6646 | { | |
6647 | /* Relocations against _gp_disp are permitted only with | |
6648 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
6649 | if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16) | |
6650 | return bfd_reloc_notsupported; | |
6651 | ||
6652 | gp_disp_p = true; | |
6653 | } | |
97a4bb05 MM |
6654 | /* If this symbol is defined, calculate its address. Note that |
6655 | _gp_disp is a magic symbol, always implicitly defined by the | |
6656 | linker, so it's inappropriate to check to see whether or not | |
6657 | its defined. */ | |
6658 | else if ((h->root.root.type == bfd_link_hash_defined | |
6659 | || h->root.root.type == bfd_link_hash_defweak) | |
6660 | && h->root.root.u.def.section) | |
7403cb63 MM |
6661 | { |
6662 | sec = h->root.root.u.def.section; | |
6663 | if (sec->output_section) | |
be3ccd9c | 6664 | symbol = (h->root.root.u.def.value |
7403cb63 MM |
6665 | + sec->output_section->vma |
6666 | + sec->output_offset); | |
252b5132 | 6667 | else |
7403cb63 MM |
6668 | symbol = h->root.root.u.def.value; |
6669 | } | |
97287574 MM |
6670 | else if (h->root.root.type == bfd_link_hash_undefweak) |
6671 | /* We allow relocations against undefined weak symbols, giving | |
6672 | it the value zero, so that you can undefined weak functions | |
6673 | and check to see if they exist by looking at their | |
6674 | addresses. */ | |
6675 | symbol = 0; | |
671bae9c NC |
6676 | else if (info->shared |
6677 | && (!info->symbolic || info->allow_shlib_undefined) | |
6678 | && !info->no_undefined | |
ba09750c | 6679 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
8535d39c | 6680 | symbol = 0; |
f7cb7d68 UC |
6681 | else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 || |
6682 | strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0) | |
3811169e MM |
6683 | { |
6684 | /* If this is a dynamic link, we should have created a | |
be3ccd9c | 6685 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol |
f7cb7d68 | 6686 | in in mips_elf_create_dynamic_sections. |
3811169e MM |
6687 | Otherwise, we should define the symbol with a value of 0. |
6688 | FIXME: It should probably get into the symbol table | |
6689 | somehow as well. */ | |
6690 | BFD_ASSERT (! info->shared); | |
6691 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
8535d39c | 6692 | symbol = 0; |
3811169e | 6693 | } |
7403cb63 MM |
6694 | else |
6695 | { | |
5cc7c785 L |
6696 | if (! ((*info->callbacks->undefined_symbol) |
6697 | (info, h->root.root.root.string, input_bfd, | |
6698 | input_section, relocation->r_offset, | |
3a27a730 | 6699 | (!info->shared || info->no_undefined |
ba09750c | 6700 | || ELF_ST_VISIBILITY (h->root.other))))) |
5cc7c785 L |
6701 | return bfd_reloc_undefined; |
6702 | symbol = 0; | |
7403cb63 | 6703 | } |
197b9ca0 MM |
6704 | |
6705 | target_is_16_bit_code_p = (h->root.other == STO_MIPS16); | |
6706 | } | |
be3ccd9c | 6707 | |
197b9ca0 MM |
6708 | /* If this is a 32-bit call to a 16-bit function with a stub, we |
6709 | need to redirect the call to the stub, unless we're already *in* | |
6710 | a stub. */ | |
6711 | if (r_type != R_MIPS16_26 && !info->relocateable | |
6712 | && ((h != NULL && h->fn_stub != NULL) | |
6713 | || (local_p && elf_tdata (input_bfd)->local_stubs != NULL | |
6714 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
6715 | && !mips_elf_stub_section_p (input_bfd, input_section)) | |
6716 | { | |
6717 | /* This is a 32-bit call to a 16-bit function. We should | |
6718 | have already noticed that we were going to need the | |
6719 | stub. */ | |
6720 | if (local_p) | |
6721 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
6722 | else | |
6723 | { | |
6724 | BFD_ASSERT (h->need_fn_stub); | |
6725 | sec = h->fn_stub; | |
6726 | } | |
6727 | ||
6728 | symbol = sec->output_section->vma + sec->output_offset; | |
7403cb63 | 6729 | } |
197b9ca0 MM |
6730 | /* If this is a 16-bit call to a 32-bit function with a stub, we |
6731 | need to redirect the call to the stub. */ | |
6732 | else if (r_type == R_MIPS16_26 && !info->relocateable | |
be3ccd9c | 6733 | && h != NULL |
197b9ca0 MM |
6734 | && (h->call_stub != NULL || h->call_fp_stub != NULL) |
6735 | && !target_is_16_bit_code_p) | |
6736 | { | |
6737 | /* If both call_stub and call_fp_stub are defined, we can figure | |
6738 | out which one to use by seeing which one appears in the input | |
6739 | file. */ | |
6740 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
6741 | { | |
6742 | asection *o; | |
6743 | ||
6744 | sec = NULL; | |
6745 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
6746 | { | |
6747 | if (strncmp (bfd_get_section_name (input_bfd, o), | |
6748 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
6749 | { | |
6750 | sec = h->call_fp_stub; | |
6751 | break; | |
6752 | } | |
6753 | } | |
6754 | if (sec == NULL) | |
6755 | sec = h->call_stub; | |
6756 | } | |
6757 | else if (h->call_stub != NULL) | |
6758 | sec = h->call_stub; | |
6759 | else | |
6760 | sec = h->call_fp_stub; | |
6761 | ||
6762 | BFD_ASSERT (sec->_raw_size > 0); | |
6763 | symbol = sec->output_section->vma + sec->output_offset; | |
6764 | } | |
6765 | ||
6766 | /* Calls from 16-bit code to 32-bit code and vice versa require the | |
6767 | special jalx instruction. */ | |
6387d602 | 6768 | *require_jalxp = (!info->relocateable |
55baa95b EC |
6769 | && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p) |
6770 | || ((r_type == R_MIPS_26) && target_is_16_bit_code_p))); | |
252b5132 | 6771 | |
b305ef96 UC |
6772 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, |
6773 | local_sections, true); | |
6774 | ||
7403cb63 MM |
6775 | /* If we haven't already determined the GOT offset, or the GP value, |
6776 | and we're going to need it, get it now. */ | |
6777 | switch (r_type) | |
6778 | { | |
6779 | case R_MIPS_CALL16: | |
2841ecd0 | 6780 | case R_MIPS_GOT16: |
7403cb63 MM |
6781 | case R_MIPS_GOT_DISP: |
6782 | case R_MIPS_GOT_HI16: | |
6783 | case R_MIPS_CALL_HI16: | |
6784 | case R_MIPS_GOT_LO16: | |
6785 | case R_MIPS_CALL_LO16: | |
6786 | /* Find the index into the GOT where this value is located. */ | |
4f2860ca | 6787 | if (!local_p) |
7403cb63 MM |
6788 | { |
6789 | BFD_ASSERT (addend == 0); | |
be3ccd9c | 6790 | g = mips_elf_global_got_index |
7403cb63 | 6791 | (elf_hash_table (info)->dynobj, |
be3ccd9c | 6792 | (struct elf_link_hash_entry *) h); |
9a8f3bb7 UC |
6793 | if (! elf_hash_table(info)->dynamic_sections_created |
6794 | || (info->shared | |
6795 | && (info->symbolic || h->root.dynindx == -1) | |
6796 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
6797 | { | |
6798 | /* This is a static link or a -Bsymbolic link. The | |
6799 | symbol is defined locally, or was forced to be local. | |
6800 | We must initialize this entry in the GOT. */ | |
6801 | asection *sgot = mips_elf_got_section(elf_hash_table | |
6802 | (info)->dynobj); | |
6803 | MIPS_ELF_PUT_WORD (elf_hash_table (info)->dynobj, | |
6804 | symbol + addend, sgot->contents + g); | |
6805 | } | |
7403cb63 | 6806 | } |
9117d219 | 6807 | else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16) |
4f2860ca MM |
6808 | /* There's no need to create a local GOT entry here; the |
6809 | calculation for a local GOT16 entry does not involve G. */ | |
6810 | break; | |
7403cb63 MM |
6811 | else |
6812 | { | |
6813 | g = mips_elf_local_got_index (abfd, info, symbol + addend); | |
6814 | if (g == (bfd_vma) -1) | |
caf8ca8e | 6815 | return bfd_reloc_outofrange; |
7403cb63 | 6816 | } |
252b5132 | 6817 | |
7403cb63 MM |
6818 | /* Convert GOT indices to actual offsets. */ |
6819 | g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj, | |
6820 | abfd, g); | |
6821 | break; | |
be3ccd9c | 6822 | |
7403cb63 MM |
6823 | case R_MIPS_HI16: |
6824 | case R_MIPS_LO16: | |
175e9962 | 6825 | case R_MIPS16_GPREL: |
7403cb63 MM |
6826 | case R_MIPS_GPREL16: |
6827 | case R_MIPS_GPREL32: | |
0af99795 | 6828 | case R_MIPS_LITERAL: |
7403cb63 MM |
6829 | gp0 = _bfd_get_gp_value (input_bfd); |
6830 | gp = _bfd_get_gp_value (abfd); | |
6831 | break; | |
252b5132 | 6832 | |
7403cb63 MM |
6833 | default: |
6834 | break; | |
6835 | } | |
252b5132 | 6836 | |
7403cb63 MM |
6837 | /* Figure out what kind of relocation is being performed. */ |
6838 | switch (r_type) | |
6839 | { | |
6840 | case R_MIPS_NONE: | |
6841 | return bfd_reloc_continue; | |
252b5132 | 6842 | |
7403cb63 MM |
6843 | case R_MIPS_16: |
6844 | value = symbol + mips_elf_sign_extend (addend, 16); | |
6845 | overflowed_p = mips_elf_overflow_p (value, 16); | |
6846 | break; | |
252b5132 | 6847 | |
7403cb63 MM |
6848 | case R_MIPS_32: |
6849 | case R_MIPS_REL32: | |
a3c7651d | 6850 | case R_MIPS_64: |
7b1f1231 MM |
6851 | if ((info->shared |
6852 | || (elf_hash_table (info)->dynamic_sections_created | |
6853 | && h != NULL | |
d918dd35 L |
6854 | && ((h->root.elf_link_hash_flags |
6855 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0) | |
6856 | && ((h->root.elf_link_hash_flags | |
6857 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
ec338859 | 6858 | && r_symndx != 0 |
7b1f1231 | 6859 | && (input_section->flags & SEC_ALLOC) != 0) |
7403cb63 | 6860 | { |
7b1f1231 MM |
6861 | /* If we're creating a shared library, or this relocation is |
6862 | against a symbol in a shared library, then we can't know | |
6863 | where the symbol will end up. So, we create a relocation | |
6864 | record in the output, and leave the job up to the dynamic | |
6865 | linker. */ | |
6866 | value = addend; | |
be3ccd9c KH |
6867 | if (!mips_elf_create_dynamic_relocation (abfd, |
6868 | info, | |
7b1f1231 MM |
6869 | relocation, |
6870 | h, | |
6871 | sec, | |
6872 | symbol, | |
6873 | &value, | |
9117d219 | 6874 | input_section)) |
caf8ca8e | 6875 | return bfd_reloc_undefined; |
7403cb63 MM |
6876 | } |
6877 | else | |
6878 | { | |
a3c7651d | 6879 | if (r_type != R_MIPS_REL32) |
7403cb63 MM |
6880 | value = symbol + addend; |
6881 | else | |
6882 | value = addend; | |
6883 | } | |
6884 | value &= howto->dst_mask; | |
6885 | break; | |
6886 | ||
bb2d6cd7 GK |
6887 | case R_MIPS_PC32: |
6888 | case R_MIPS_PC64: | |
6889 | case R_MIPS_GNU_REL_LO16: | |
6890 | value = symbol + addend - p; | |
6891 | value &= howto->dst_mask; | |
6892 | break; | |
6893 | ||
6894 | case R_MIPS_GNU_REL16_S2: | |
6895 | value = symbol + mips_elf_sign_extend (addend << 2, 18) - p; | |
6896 | overflowed_p = mips_elf_overflow_p (value, 18); | |
6897 | value = (value >> 2) & howto->dst_mask; | |
6898 | break; | |
6899 | ||
6900 | case R_MIPS_GNU_REL_HI16: | |
fcc76bea CD |
6901 | /* Instead of subtracting 'p' here, we should be subtracting the |
6902 | equivalent value for the LO part of the reloc, since the value | |
6903 | here is relative to that address. Because that's not easy to do, | |
6904 | we adjust 'addend' in _bfd_mips_elf_relocate_section(). See also | |
6905 | the comment there for more information. */ | |
bb2d6cd7 GK |
6906 | value = mips_elf_high (addend + symbol - p); |
6907 | value &= howto->dst_mask; | |
6908 | break; | |
6909 | ||
e53bd91b | 6910 | case R_MIPS16_26: |
9117d219 | 6911 | /* The calculation for R_MIPS16_26 is just the same as for an |
e53bd91b | 6912 | R_MIPS_26. It's only the storage of the relocated field into |
1e52e2ee | 6913 | the output file that's different. That's handled in |
e53bd91b MM |
6914 | mips_elf_perform_relocation. So, we just fall through to the |
6915 | R_MIPS_26 case here. */ | |
7403cb63 MM |
6916 | case R_MIPS_26: |
6917 | if (local_p) | |
9117d219 | 6918 | value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2; |
7403cb63 MM |
6919 | else |
6920 | value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2; | |
6921 | value &= howto->dst_mask; | |
6922 | break; | |
6923 | ||
6924 | case R_MIPS_HI16: | |
6925 | if (!gp_disp_p) | |
6926 | { | |
6927 | value = mips_elf_high (addend + symbol); | |
6928 | value &= howto->dst_mask; | |
6929 | } | |
6930 | else | |
6931 | { | |
6932 | value = mips_elf_high (addend + gp - p); | |
6933 | overflowed_p = mips_elf_overflow_p (value, 16); | |
6934 | } | |
6935 | break; | |
6936 | ||
6937 | case R_MIPS_LO16: | |
6938 | if (!gp_disp_p) | |
6939 | value = (symbol + addend) & howto->dst_mask; | |
6940 | else | |
6941 | { | |
6942 | value = addend + gp - p + 4; | |
97a4bb05 MM |
6943 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
6944 | for overflow. But, on, say, Irix 5, relocations against | |
6945 | _gp_disp are normally generated from the .cpload | |
6946 | pseudo-op. It generates code that normally looks like | |
6947 | this: | |
6948 | ||
6949 | lui $gp,%hi(_gp_disp) | |
6950 | addiu $gp,$gp,%lo(_gp_disp) | |
6951 | addu $gp,$gp,$t9 | |
6952 | ||
6953 | Here $t9 holds the address of the function being called, | |
6954 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
e53bd91b | 6955 | relocation can easily overflow in this situation, but the |
97a4bb05 MM |
6956 | R_MIPS_HI16 relocation will handle the overflow. |
6957 | Therefore, we consider this a bug in the MIPS ABI, and do | |
6958 | not check for overflow here. */ | |
7403cb63 MM |
6959 | } |
6960 | break; | |
6961 | ||
6962 | case R_MIPS_LITERAL: | |
6963 | /* Because we don't merge literal sections, we can handle this | |
6964 | just like R_MIPS_GPREL16. In the long run, we should merge | |
6965 | shared literals, and then we will need to additional work | |
6966 | here. */ | |
6967 | ||
6968 | /* Fall through. */ | |
6969 | ||
b7233c24 MM |
6970 | case R_MIPS16_GPREL: |
6971 | /* The R_MIPS16_GPREL performs the same calculation as | |
6972 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
6973 | order. We don't need to do anything special here; the | |
6974 | differences are handled in mips_elf_perform_relocation. */ | |
7403cb63 MM |
6975 | case R_MIPS_GPREL16: |
6976 | if (local_p) | |
6977 | value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp; | |
6978 | else | |
6979 | value = mips_elf_sign_extend (addend, 16) + symbol - gp; | |
6980 | overflowed_p = mips_elf_overflow_p (value, 16); | |
6981 | break; | |
be3ccd9c | 6982 | |
7403cb63 | 6983 | case R_MIPS_GOT16: |
9117d219 | 6984 | case R_MIPS_CALL16: |
7403cb63 MM |
6985 | if (local_p) |
6986 | { | |
b305ef96 | 6987 | boolean forced; |
be3ccd9c | 6988 | |
b305ef96 UC |
6989 | /* The special case is when the symbol is forced to be local. We |
6990 | need the full address in the GOT since no R_MIPS_LO16 relocation | |
6991 | follows. */ | |
6992 | forced = ! mips_elf_local_relocation_p (input_bfd, relocation, | |
6993 | local_sections, false); | |
6994 | value = mips_elf_got16_entry (abfd, info, symbol + addend, forced); | |
7403cb63 | 6995 | if (value == (bfd_vma) -1) |
caf8ca8e | 6996 | return bfd_reloc_outofrange; |
be3ccd9c | 6997 | value |
7403cb63 MM |
6998 | = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj, |
6999 | abfd, | |
7000 | value); | |
7001 | overflowed_p = mips_elf_overflow_p (value, 16); | |
7002 | break; | |
7003 | } | |
7004 | ||
7005 | /* Fall through. */ | |
7006 | ||
7403cb63 MM |
7007 | case R_MIPS_GOT_DISP: |
7008 | value = g; | |
7009 | overflowed_p = mips_elf_overflow_p (value, 16); | |
7010 | break; | |
7011 | ||
7012 | case R_MIPS_GPREL32: | |
7013 | value = (addend + symbol + gp0 - gp) & howto->dst_mask; | |
7014 | break; | |
7015 | ||
7016 | case R_MIPS_PC16: | |
7017 | value = mips_elf_sign_extend (addend, 16) + symbol - p; | |
7018 | overflowed_p = mips_elf_overflow_p (value, 16); | |
cb56d3d3 | 7019 | value = (bfd_vma) ((bfd_signed_vma) value / 4); |
7403cb63 MM |
7020 | break; |
7021 | ||
7022 | case R_MIPS_GOT_HI16: | |
7023 | case R_MIPS_CALL_HI16: | |
7024 | /* We're allowed to handle these two relocations identically. | |
7025 | The dynamic linker is allowed to handle the CALL relocations | |
7026 | differently by creating a lazy evaluation stub. */ | |
7027 | value = g; | |
7028 | value = mips_elf_high (value); | |
7029 | value &= howto->dst_mask; | |
7030 | break; | |
7031 | ||
7032 | case R_MIPS_GOT_LO16: | |
7033 | case R_MIPS_CALL_LO16: | |
7034 | value = g & howto->dst_mask; | |
7035 | break; | |
7036 | ||
7403cb63 MM |
7037 | case R_MIPS_GOT_PAGE: |
7038 | value = mips_elf_got_page (abfd, info, symbol + addend, NULL); | |
7039 | if (value == (bfd_vma) -1) | |
caf8ca8e | 7040 | return bfd_reloc_outofrange; |
7403cb63 MM |
7041 | value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj, |
7042 | abfd, | |
7043 | value); | |
7044 | overflowed_p = mips_elf_overflow_p (value, 16); | |
7045 | break; | |
be3ccd9c | 7046 | |
7403cb63 MM |
7047 | case R_MIPS_GOT_OFST: |
7048 | mips_elf_got_page (abfd, info, symbol + addend, &value); | |
7049 | overflowed_p = mips_elf_overflow_p (value, 16); | |
7050 | break; | |
7051 | ||
7052 | case R_MIPS_SUB: | |
7053 | value = symbol - addend; | |
7054 | value &= howto->dst_mask; | |
7055 | break; | |
7056 | ||
7057 | case R_MIPS_HIGHER: | |
7058 | value = mips_elf_higher (addend + symbol); | |
7059 | value &= howto->dst_mask; | |
7060 | break; | |
7061 | ||
7062 | case R_MIPS_HIGHEST: | |
7063 | value = mips_elf_highest (addend + symbol); | |
7064 | value &= howto->dst_mask; | |
7065 | break; | |
be3ccd9c | 7066 | |
7403cb63 MM |
7067 | case R_MIPS_SCN_DISP: |
7068 | value = symbol + addend - sec->output_offset; | |
7069 | value &= howto->dst_mask; | |
7070 | break; | |
7071 | ||
7072 | case R_MIPS_PJUMP: | |
7073 | case R_MIPS_JALR: | |
7074 | /* Both of these may be ignored. R_MIPS_JALR is an optimization | |
7075 | hint; we could improve performance by honoring that hint. */ | |
7076 | return bfd_reloc_continue; | |
7077 | ||
7078 | case R_MIPS_GNU_VTINHERIT: | |
7079 | case R_MIPS_GNU_VTENTRY: | |
7080 | /* We don't do anything with these at present. */ | |
7081 | return bfd_reloc_continue; | |
7082 | ||
7403cb63 MM |
7083 | default: |
7084 | /* An unrecognized relocation type. */ | |
7085 | return bfd_reloc_notsupported; | |
7086 | } | |
7087 | ||
7088 | /* Store the VALUE for our caller. */ | |
7089 | *valuep = value; | |
7090 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
7091 | } | |
7092 | ||
7093 | /* Obtain the field relocated by RELOCATION. */ | |
7094 | ||
7095 | static bfd_vma | |
7096 | mips_elf_obtain_contents (howto, relocation, input_bfd, contents) | |
7097 | reloc_howto_type *howto; | |
103186c6 | 7098 | const Elf_Internal_Rela *relocation; |
7403cb63 MM |
7099 | bfd *input_bfd; |
7100 | bfd_byte *contents; | |
7101 | { | |
7102 | bfd_vma x; | |
7103 | bfd_byte *location = contents + relocation->r_offset; | |
7104 | ||
b7233c24 | 7105 | /* Obtain the bytes. */ |
1e738b87 | 7106 | x = bfd_get (((bfd_vma)(8 * bfd_get_reloc_size (howto))), input_bfd, location); |
7403cb63 | 7107 | |
6296902e MM |
7108 | if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26 |
7109 | || ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL) | |
1e52e2ee MM |
7110 | && bfd_little_endian (input_bfd)) |
7111 | /* The two 16-bit words will be reversed on a little-endian | |
7112 | system. See mips_elf_perform_relocation for more details. */ | |
7113 | x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16)); | |
7114 | ||
7403cb63 MM |
7115 | return x; |
7116 | } | |
7117 | ||
7118 | /* It has been determined that the result of the RELOCATION is the | |
7119 | VALUE. Use HOWTO to place VALUE into the output file at the | |
7120 | appropriate position. The SECTION is the section to which the | |
197b9ca0 MM |
7121 | relocation applies. If REQUIRE_JALX is true, then the opcode used |
7122 | for the relocation must be either JAL or JALX, and it is | |
7123 | unconditionally converted to JALX. | |
7403cb63 MM |
7124 | |
7125 | Returns false if anything goes wrong. */ | |
252b5132 | 7126 | |
197b9ca0 | 7127 | static boolean |
e53bd91b | 7128 | mips_elf_perform_relocation (info, howto, relocation, value, |
be3ccd9c | 7129 | input_bfd, input_section, |
197b9ca0 | 7130 | contents, require_jalx) |
e53bd91b | 7131 | struct bfd_link_info *info; |
7403cb63 | 7132 | reloc_howto_type *howto; |
103186c6 | 7133 | const Elf_Internal_Rela *relocation; |
7403cb63 MM |
7134 | bfd_vma value; |
7135 | bfd *input_bfd; | |
197b9ca0 | 7136 | asection *input_section; |
7403cb63 | 7137 | bfd_byte *contents; |
197b9ca0 | 7138 | boolean require_jalx; |
7403cb63 MM |
7139 | { |
7140 | bfd_vma x; | |
e53bd91b | 7141 | bfd_byte *location; |
197b9ca0 | 7142 | int r_type = ELF32_R_TYPE (relocation->r_info); |
e53bd91b MM |
7143 | |
7144 | /* Figure out where the relocation is occurring. */ | |
7145 | location = contents + relocation->r_offset; | |
252b5132 | 7146 | |
7403cb63 MM |
7147 | /* Obtain the current value. */ |
7148 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
252b5132 | 7149 | |
7403cb63 MM |
7150 | /* Clear the field we are setting. */ |
7151 | x &= ~howto->dst_mask; | |
252b5132 | 7152 | |
e53bd91b MM |
7153 | /* If this is the R_MIPS16_26 relocation, we must store the |
7154 | value in a funny way. */ | |
197b9ca0 | 7155 | if (r_type == R_MIPS16_26) |
7403cb63 | 7156 | { |
e53bd91b MM |
7157 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
7158 | Most mips16 instructions are 16 bits, but these instructions | |
7159 | are 32 bits. | |
7160 | ||
7161 | The format of these instructions is: | |
7162 | ||
7163 | +--------------+--------------------------------+ | |
7164 | ! JALX ! X! Imm 20:16 ! Imm 25:21 ! | |
7165 | +--------------+--------------------------------+ | |
7166 | ! Immediate 15:0 ! | |
7167 | +-----------------------------------------------+ | |
be3ccd9c | 7168 | |
e53bd91b MM |
7169 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. |
7170 | Note that the immediate value in the first word is swapped. | |
7171 | ||
7172 | When producing a relocateable object file, R_MIPS16_26 is | |
7173 | handled mostly like R_MIPS_26. In particular, the addend is | |
7174 | stored as a straight 26-bit value in a 32-bit instruction. | |
7175 | (gas makes life simpler for itself by never adjusting a | |
7176 | R_MIPS16_26 reloc to be against a section, so the addend is | |
7177 | always zero). However, the 32 bit instruction is stored as 2 | |
7178 | 16-bit values, rather than a single 32-bit value. In a | |
7179 | big-endian file, the result is the same; in a little-endian | |
7180 | file, the two 16-bit halves of the 32 bit value are swapped. | |
7181 | This is so that a disassembler can recognize the jal | |
7182 | instruction. | |
7183 | ||
7184 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
7185 | instruction stored as two 16-bit values. The addend A is the | |
7186 | contents of the targ26 field. The calculation is the same as | |
7187 | R_MIPS_26. When storing the calculated value, reorder the | |
7188 | immediate value as shown above, and don't forget to store the | |
7189 | value as two 16-bit values. | |
7190 | ||
7191 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
7192 | defined as | |
be3ccd9c | 7193 | |
e53bd91b MM |
7194 | big-endian: |
7195 | +--------+----------------------+ | |
7196 | | | | | |
7197 | | | targ26-16 | | |
7198 | |31 26|25 0| | |
7199 | +--------+----------------------+ | |
be3ccd9c | 7200 | |
e53bd91b MM |
7201 | little-endian: |
7202 | +----------+------+-------------+ | |
7203 | | | | | | |
7204 | | sub1 | | sub2 | | |
7205 | |0 9|10 15|16 31| | |
7206 | +----------+--------------------+ | |
7207 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
7208 | ((sub1 << 16) | sub2)). | |
be3ccd9c | 7209 | |
e53bd91b | 7210 | When producing a relocateable object file, the calculation is |
9117d219 | 7211 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) |
e53bd91b | 7212 | When producing a fully linked file, the calculation is |
9117d219 | 7213 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) |
e53bd91b MM |
7214 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */ |
7215 | ||
7216 | if (!info->relocateable) | |
7217 | /* Shuffle the bits according to the formula above. */ | |
be3ccd9c KH |
7218 | value = (((value & 0x1f0000) << 5) |
7219 | | ((value & 0x3e00000) >> 5) | |
e53bd91b | 7220 | | (value & 0xffff)); |
e53bd91b | 7221 | } |
197b9ca0 | 7222 | else if (r_type == R_MIPS16_GPREL) |
b7233c24 MM |
7223 | { |
7224 | /* R_MIPS16_GPREL is used for GP-relative addressing in mips16 | |
7225 | mode. A typical instruction will have a format like this: | |
7226 | ||
7227 | +--------------+--------------------------------+ | |
7228 | ! EXTEND ! Imm 10:5 ! Imm 15:11 ! | |
7229 | +--------------+--------------------------------+ | |
7230 | ! Major ! rx ! ry ! Imm 4:0 ! | |
7231 | +--------------+--------------------------------+ | |
be3ccd9c | 7232 | |
b7233c24 MM |
7233 | EXTEND is the five bit value 11110. Major is the instruction |
7234 | opcode. | |
be3ccd9c | 7235 | |
b7233c24 MM |
7236 | This is handled exactly like R_MIPS_GPREL16, except that the |
7237 | addend is retrieved and stored as shown in this diagram; that | |
be3ccd9c | 7238 | is, the Imm fields above replace the V-rel16 field. |
b7233c24 | 7239 | |
6296902e MM |
7240 | All we need to do here is shuffle the bits appropriately. As |
7241 | above, the two 16-bit halves must be swapped on a | |
7242 | little-endian system. */ | |
b7233c24 MM |
7243 | value = (((value & 0x7e0) << 16) |
7244 | | ((value & 0xf800) << 5) | |
7245 | | (value & 0x1f)); | |
7246 | } | |
252b5132 | 7247 | |
e53bd91b MM |
7248 | /* Set the field. */ |
7249 | x |= (value & howto->dst_mask); | |
252b5132 | 7250 | |
197b9ca0 MM |
7251 | /* If required, turn JAL into JALX. */ |
7252 | if (require_jalx) | |
7253 | { | |
7254 | boolean ok; | |
7255 | bfd_vma opcode = x >> 26; | |
7256 | bfd_vma jalx_opcode; | |
7257 | ||
7258 | /* Check to see if the opcode is already JAL or JALX. */ | |
7259 | if (r_type == R_MIPS16_26) | |
7260 | { | |
7261 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
7262 | jalx_opcode = 0x7; | |
7263 | } | |
7264 | else | |
7265 | { | |
7266 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
7267 | jalx_opcode = 0x1d; | |
7268 | } | |
7269 | ||
7270 | /* If the opcode is not JAL or JALX, there's a problem. */ | |
7271 | if (!ok) | |
7272 | { | |
7273 | (*_bfd_error_handler) | |
7274 | (_("%s: %s+0x%lx: jump to stub routine which is not jal"), | |
8f615d07 | 7275 | bfd_archive_filename (input_bfd), |
197b9ca0 MM |
7276 | input_section->name, |
7277 | (unsigned long) relocation->r_offset); | |
7278 | bfd_set_error (bfd_error_bad_value); | |
7279 | return false; | |
7280 | } | |
7281 | ||
7282 | /* Make this the JALX opcode. */ | |
7283 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
7284 | } | |
7285 | ||
6296902e MM |
7286 | /* Swap the high- and low-order 16 bits on little-endian systems |
7287 | when doing a MIPS16 relocation. */ | |
197b9ca0 | 7288 | if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26) |
6296902e MM |
7289 | && bfd_little_endian (input_bfd)) |
7290 | x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16)); | |
be3ccd9c | 7291 | |
e53bd91b MM |
7292 | /* Put the value into the output. */ |
7293 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
197b9ca0 MM |
7294 | return true; |
7295 | } | |
7296 | ||
7297 | /* Returns true if SECTION is a MIPS16 stub section. */ | |
7298 | ||
7299 | static boolean | |
7300 | mips_elf_stub_section_p (abfd, section) | |
6387d602 | 7301 | bfd *abfd ATTRIBUTE_UNUSED; |
197b9ca0 MM |
7302 | asection *section; |
7303 | { | |
7304 | const char *name = bfd_get_section_name (abfd, section); | |
7305 | ||
7306 | return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0 | |
7307 | || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
7308 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0); | |
7403cb63 | 7309 | } |
252b5132 | 7310 | |
7403cb63 | 7311 | /* Relocate a MIPS ELF section. */ |
252b5132 | 7312 | |
103186c6 MM |
7313 | boolean |
7314 | _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
7315 | contents, relocs, local_syms, local_sections) | |
7403cb63 MM |
7316 | bfd *output_bfd; |
7317 | struct bfd_link_info *info; | |
7318 | bfd *input_bfd; | |
7319 | asection *input_section; | |
7320 | bfd_byte *contents; | |
7321 | Elf_Internal_Rela *relocs; | |
7322 | Elf_Internal_Sym *local_syms; | |
7323 | asection **local_sections; | |
7324 | { | |
31367b81 | 7325 | Elf_Internal_Rela *rel; |
103186c6 | 7326 | const Elf_Internal_Rela *relend; |
86033394 | 7327 | bfd_vma addend = 0; |
7403cb63 | 7328 | boolean use_saved_addend_p = false; |
103186c6 | 7329 | struct elf_backend_data *bed; |
252b5132 | 7330 | |
103186c6 MM |
7331 | bed = get_elf_backend_data (output_bfd); |
7332 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
7403cb63 MM |
7333 | for (rel = relocs; rel < relend; ++rel) |
7334 | { | |
7335 | const char *name; | |
7336 | bfd_vma value; | |
7403cb63 | 7337 | reloc_howto_type *howto; |
197b9ca0 | 7338 | boolean require_jalx; |
31367b81 MM |
7339 | /* True if the relocation is a RELA relocation, rather than a |
7340 | REL relocation. */ | |
7341 | boolean rela_relocation_p = true; | |
dc810e39 | 7342 | unsigned int r_type = ELF32_R_TYPE (rel->r_info); |
7a65545d | 7343 | const char * msg = (const char *) NULL; |
252b5132 | 7344 | |
7403cb63 | 7345 | /* Find the relocation howto for this relocation. */ |
31367b81 | 7346 | if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)) |
0af99795 GK |
7347 | { |
7348 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
be3ccd9c | 7349 | 64-bit code, but make sure all their addresses are in the |
0af99795 GK |
7350 | lowermost or uppermost 32-bit section of the 64-bit address |
7351 | space. Thus, when they use an R_MIPS_64 they mean what is | |
7352 | usually meant by R_MIPS_32, with the exception that the | |
7353 | stored value is sign-extended to 64 bits. */ | |
d75bc93d | 7354 | howto = elf_mips_howto_table_rel + R_MIPS_32; |
0af99795 GK |
7355 | |
7356 | /* On big-endian systems, we need to lie about the position | |
7357 | of the reloc. */ | |
7358 | if (bfd_big_endian (input_bfd)) | |
be3ccd9c | 7359 | rel->r_offset += 4; |
0af99795 | 7360 | } |
a3c7651d | 7361 | else |
c9b3cbf3 | 7362 | howto = mips_rtype_to_howto (r_type); |
252b5132 | 7363 | |
7403cb63 MM |
7364 | if (!use_saved_addend_p) |
7365 | { | |
7366 | Elf_Internal_Shdr *rel_hdr; | |
7367 | ||
7368 | /* If these relocations were originally of the REL variety, | |
7369 | we must pull the addend out of the field that will be | |
7370 | relocated. Otherwise, we simply use the contents of the | |
7371 | RELA relocation. To determine which flavor or relocation | |
7372 | this is, we depend on the fact that the INPUT_SECTION's | |
7373 | REL_HDR is read before its REL_HDR2. */ | |
7374 | rel_hdr = &elf_section_data (input_section)->rel_hdr; | |
5f771d47 | 7375 | if ((size_t) (rel - relocs) |
d9bc7a44 | 7376 | >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) |
7403cb63 | 7377 | rel_hdr = elf_section_data (input_section)->rel_hdr2; |
103186c6 | 7378 | if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd)) |
7403cb63 | 7379 | { |
31367b81 MM |
7380 | /* Note that this is a REL relocation. */ |
7381 | rela_relocation_p = false; | |
7403cb63 | 7382 | |
31367b81 | 7383 | /* Get the addend, which is stored in the input file. */ |
be3ccd9c | 7384 | addend = mips_elf_obtain_contents (howto, |
7403cb63 MM |
7385 | rel, |
7386 | input_bfd, | |
7387 | contents); | |
7388 | addend &= howto->src_mask; | |
7389 | ||
7390 | /* For some kinds of relocations, the ADDEND is a | |
7391 | combination of the addend stored in two different | |
7392 | relocations. */ | |
6387d602 | 7393 | if (r_type == R_MIPS_HI16 |
bb2d6cd7 | 7394 | || r_type == R_MIPS_GNU_REL_HI16 |
6387d602 ILT |
7395 | || (r_type == R_MIPS_GOT16 |
7396 | && mips_elf_local_relocation_p (input_bfd, rel, | |
b305ef96 | 7397 | local_sections, false))) |
252b5132 | 7398 | { |
23b255aa MM |
7399 | bfd_vma l; |
7400 | const Elf_Internal_Rela *lo16_relocation; | |
7401 | reloc_howto_type *lo16_howto; | |
dc810e39 | 7402 | unsigned int lo; |
23b255aa | 7403 | |
e7c44218 MM |
7404 | /* The combined value is the sum of the HI16 addend, |
7405 | left-shifted by sixteen bits, and the LO16 | |
7406 | addend, sign extended. (Usually, the code does | |
7407 | a `lui' of the HI16 value, and then an `addiu' of | |
be3ccd9c | 7408 | the LO16 value.) |
e7c44218 | 7409 | |
bb2d6cd7 GK |
7410 | Scan ahead to find a matching LO16 relocation. */ |
7411 | if (r_type == R_MIPS_GNU_REL_HI16) | |
7412 | lo = R_MIPS_GNU_REL_LO16; | |
7413 | else | |
7414 | lo = R_MIPS_LO16; | |
be3ccd9c KH |
7415 | lo16_relocation |
7416 | = mips_elf_next_relocation (lo, rel, relend); | |
23b255aa | 7417 | if (lo16_relocation == NULL) |
7403cb63 | 7418 | return false; |
252b5132 | 7419 | |
23b255aa | 7420 | /* Obtain the addend kept there. */ |
bb2d6cd7 | 7421 | lo16_howto = mips_rtype_to_howto (lo); |
23b255aa MM |
7422 | l = mips_elf_obtain_contents (lo16_howto, |
7423 | lo16_relocation, | |
7424 | input_bfd, contents); | |
7425 | l &= lo16_howto->src_mask; | |
e7c44218 | 7426 | l = mips_elf_sign_extend (l, 16); |
23b255aa | 7427 | |
7403cb63 | 7428 | addend <<= 16; |
252b5132 | 7429 | |
7403cb63 | 7430 | /* Compute the combined addend. */ |
e7c44218 | 7431 | addend += l; |
fcc76bea CD |
7432 | |
7433 | /* If PC-relative, subtract the difference between the | |
7434 | address of the LO part of the reloc and the address of | |
7435 | the HI part. The relocation is relative to the LO | |
7436 | part, but mips_elf_calculate_relocation() doesn't know | |
7437 | it address or the difference from the HI part, so | |
7438 | we subtract that difference here. See also the | |
7439 | comment in mips_elf_calculate_relocation(). */ | |
7440 | if (r_type == R_MIPS_GNU_REL_HI16) | |
7441 | addend -= (lo16_relocation->r_offset - rel->r_offset); | |
252b5132 | 7442 | } |
b7233c24 MM |
7443 | else if (r_type == R_MIPS16_GPREL) |
7444 | { | |
7445 | /* The addend is scrambled in the object file. See | |
7446 | mips_elf_perform_relocation for details on the | |
7447 | format. */ | |
7448 | addend = (((addend & 0x1f0000) >> 5) | |
7449 | | ((addend & 0x7e00000) >> 16) | |
7450 | | (addend & 0x1f)); | |
7451 | } | |
252b5132 RH |
7452 | } |
7453 | else | |
7403cb63 MM |
7454 | addend = rel->r_addend; |
7455 | } | |
252b5132 | 7456 | |
31367b81 MM |
7457 | if (info->relocateable) |
7458 | { | |
7459 | Elf_Internal_Sym *sym; | |
7460 | unsigned long r_symndx; | |
7461 | ||
7893e6a2 GK |
7462 | if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd) |
7463 | && bfd_big_endian (input_bfd)) | |
7464 | rel->r_offset -= 4; | |
7465 | ||
31367b81 | 7466 | /* Since we're just relocating, all we need to do is copy |
0db63c18 MM |
7467 | the relocations back out to the object file, unless |
7468 | they're against a section symbol, in which case we need | |
7469 | to adjust by the section offset, or unless they're GP | |
7470 | relative in which case we need to adjust by the amount | |
7471 | that we're adjusting GP in this relocateable object. */ | |
31367b81 | 7472 | |
b305ef96 UC |
7473 | if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections, |
7474 | false)) | |
f1a5f37e | 7475 | /* There's nothing to do for non-local relocations. */ |
31367b81 MM |
7476 | continue; |
7477 | ||
be3ccd9c | 7478 | if (r_type == R_MIPS16_GPREL |
0db63c18 | 7479 | || r_type == R_MIPS_GPREL16 |
0af99795 GK |
7480 | || r_type == R_MIPS_GPREL32 |
7481 | || r_type == R_MIPS_LITERAL) | |
0db63c18 MM |
7482 | addend -= (_bfd_get_gp_value (output_bfd) |
7483 | - _bfd_get_gp_value (input_bfd)); | |
bb2d6cd7 GK |
7484 | else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26 |
7485 | || r_type == R_MIPS_GNU_REL16_S2) | |
e7c44218 MM |
7486 | /* The addend is stored without its two least |
7487 | significant bits (which are always zero.) In a | |
7488 | non-relocateable link, calculate_relocation will do | |
7489 | this shift; here, we must do it ourselves. */ | |
7490 | addend <<= 2; | |
31367b81 | 7491 | |
4f2860ca MM |
7492 | r_symndx = ELF32_R_SYM (rel->r_info); |
7493 | sym = local_syms + r_symndx; | |
7494 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
7495 | /* Adjust the addend appropriately. */ | |
7496 | addend += local_sections[r_symndx]->output_offset; | |
be3ccd9c | 7497 | |
f1a5f37e MM |
7498 | /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16, |
7499 | then we only want to write out the high-order 16 bits. | |
7500 | The subsequent R_MIPS_LO16 will handle the low-order bits. */ | |
bb2d6cd7 GK |
7501 | if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16 |
7502 | || r_type == R_MIPS_GNU_REL_HI16) | |
23b255aa | 7503 | addend = mips_elf_high (addend); |
5a44662b MM |
7504 | /* If the relocation is for an R_MIPS_26 relocation, then |
7505 | the two low-order bits are not stored in the object file; | |
7506 | they are implicitly zero. */ | |
bb2d6cd7 GK |
7507 | else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26 |
7508 | || r_type == R_MIPS_GNU_REL16_S2) | |
5a44662b | 7509 | addend >>= 2; |
f1a5f37e | 7510 | |
31367b81 MM |
7511 | if (rela_relocation_p) |
7512 | /* If this is a RELA relocation, just update the addend. | |
bb2d6cd7 | 7513 | We have to cast away constness for REL. */ |
31367b81 MM |
7514 | rel->r_addend = addend; |
7515 | else | |
7516 | { | |
7517 | /* Otherwise, we have to write the value back out. Note | |
7518 | that we use the source mask, rather than the | |
7519 | destination mask because the place to which we are | |
7520 | writing will be source of the addend in the final | |
7521 | link. */ | |
7522 | addend &= howto->src_mask; | |
7893e6a2 GK |
7523 | |
7524 | if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)) | |
7525 | /* See the comment above about using R_MIPS_64 in the 32-bit | |
7526 | ABI. Here, we need to update the addend. It would be | |
7527 | possible to get away with just using the R_MIPS_32 reloc | |
7528 | but for endianness. */ | |
7529 | { | |
7530 | bfd_vma sign_bits; | |
7531 | bfd_vma low_bits; | |
7532 | bfd_vma high_bits; | |
be3ccd9c | 7533 | |
fc633e5b | 7534 | if (addend & ((bfd_vma) 1 << 31)) |
1e738b87 | 7535 | #ifdef BFD64 |
fc633e5b | 7536 | sign_bits = ((bfd_vma) 1 << 32) - 1; |
1e738b87 NC |
7537 | #else |
7538 | sign_bits = -1; | |
7539 | #endif | |
7893e6a2 GK |
7540 | else |
7541 | sign_bits = 0; | |
be3ccd9c | 7542 | |
7893e6a2 GK |
7543 | /* If we don't know that we have a 64-bit type, |
7544 | do two separate stores. */ | |
7545 | if (bfd_big_endian (input_bfd)) | |
7546 | { | |
7547 | /* Store the sign-bits (which are most significant) | |
7548 | first. */ | |
7549 | low_bits = sign_bits; | |
7550 | high_bits = addend; | |
7551 | } | |
7552 | else | |
7553 | { | |
7554 | low_bits = addend; | |
7555 | high_bits = sign_bits; | |
7556 | } | |
be3ccd9c | 7557 | bfd_put_32 (input_bfd, low_bits, |
7893e6a2 | 7558 | contents + rel->r_offset); |
be3ccd9c | 7559 | bfd_put_32 (input_bfd, high_bits, |
7893e6a2 GK |
7560 | contents + rel->r_offset + 4); |
7561 | continue; | |
7562 | } | |
7563 | ||
31367b81 | 7564 | if (!mips_elf_perform_relocation (info, howto, rel, addend, |
a17aee54 | 7565 | input_bfd, input_section, |
31367b81 MM |
7566 | contents, false)) |
7567 | return false; | |
7568 | } | |
7569 | ||
7570 | /* Go on to the next relocation. */ | |
7571 | continue; | |
7572 | } | |
7573 | ||
7403cb63 MM |
7574 | /* In the N32 and 64-bit ABIs there may be multiple consecutive |
7575 | relocations for the same offset. In that case we are | |
7576 | supposed to treat the output of each relocation as the addend | |
7577 | for the next. */ | |
be3ccd9c | 7578 | if (rel + 1 < relend |
103186c6 | 7579 | && rel->r_offset == rel[1].r_offset |
b89db8f2 | 7580 | && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE) |
7403cb63 MM |
7581 | use_saved_addend_p = true; |
7582 | else | |
7583 | use_saved_addend_p = false; | |
7584 | ||
7585 | /* Figure out what value we are supposed to relocate. */ | |
be3ccd9c | 7586 | switch (mips_elf_calculate_relocation (output_bfd, |
7403cb63 MM |
7587 | input_bfd, |
7588 | input_section, | |
7589 | info, | |
7590 | rel, | |
7591 | addend, | |
7592 | howto, | |
7403cb63 MM |
7593 | local_syms, |
7594 | local_sections, | |
7595 | &value, | |
197b9ca0 MM |
7596 | &name, |
7597 | &require_jalx)) | |
7403cb63 MM |
7598 | { |
7599 | case bfd_reloc_continue: | |
7600 | /* There's nothing to do. */ | |
7601 | continue; | |
252b5132 | 7602 | |
7403cb63 | 7603 | case bfd_reloc_undefined: |
6387d602 | 7604 | /* mips_elf_calculate_relocation already called the |
bb2d6cd7 | 7605 | undefined_symbol callback. There's no real point in |
97287574 MM |
7606 | trying to perform the relocation at this point, so we |
7607 | just skip ahead to the next relocation. */ | |
7608 | continue; | |
252b5132 | 7609 | |
7403cb63 | 7610 | case bfd_reloc_notsupported: |
7a65545d DN |
7611 | msg = _("internal error: unsupported relocation error"); |
7612 | info->callbacks->warning | |
7613 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
7614 | return false; | |
252b5132 | 7615 | |
7403cb63 MM |
7616 | case bfd_reloc_overflow: |
7617 | if (use_saved_addend_p) | |
7618 | /* Ignore overflow until we reach the last relocation for | |
7619 | a given location. */ | |
7620 | ; | |
6387d602 ILT |
7621 | else |
7622 | { | |
7623 | BFD_ASSERT (name != NULL); | |
7624 | if (! ((*info->callbacks->reloc_overflow) | |
7625 | (info, name, howto->name, (bfd_vma) 0, | |
7626 | input_bfd, input_section, rel->r_offset))) | |
7627 | return false; | |
7628 | } | |
7403cb63 | 7629 | break; |
252b5132 | 7630 | |
7403cb63 MM |
7631 | case bfd_reloc_ok: |
7632 | break; | |
7633 | ||
7634 | default: | |
7635 | abort (); | |
7636 | break; | |
252b5132 RH |
7637 | } |
7638 | ||
7403cb63 MM |
7639 | /* If we've got another relocation for the address, keep going |
7640 | until we reach the last one. */ | |
7641 | if (use_saved_addend_p) | |
252b5132 | 7642 | { |
7403cb63 MM |
7643 | addend = value; |
7644 | continue; | |
252b5132 | 7645 | } |
7403cb63 | 7646 | |
31367b81 | 7647 | if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)) |
a3c7651d MM |
7648 | /* See the comment above about using R_MIPS_64 in the 32-bit |
7649 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
7650 | that calculated the right value. Now, however, we | |
7651 | sign-extend the 32-bit result to 64-bits, and store it as a | |
7652 | 64-bit value. We are especially generous here in that we | |
7653 | go to extreme lengths to support this usage on systems with | |
7654 | only a 32-bit VMA. */ | |
7655 | { | |
a3c7651d MM |
7656 | bfd_vma sign_bits; |
7657 | bfd_vma low_bits; | |
7658 | bfd_vma high_bits; | |
7659 | ||
fc633e5b | 7660 | if (value & ((bfd_vma) 1 << 31)) |
1e738b87 | 7661 | #ifdef BFD64 |
fc633e5b | 7662 | sign_bits = ((bfd_vma) 1 << 32) - 1; |
1e738b87 NC |
7663 | #else |
7664 | sign_bits = -1; | |
7665 | #endif | |
a3c7651d MM |
7666 | else |
7667 | sign_bits = 0; | |
7668 | ||
7893e6a2 GK |
7669 | /* If we don't know that we have a 64-bit type, |
7670 | do two separate stores. */ | |
a3c7651d MM |
7671 | if (bfd_big_endian (input_bfd)) |
7672 | { | |
0af99795 GK |
7673 | /* Undo what we did above. */ |
7674 | rel->r_offset -= 4; | |
a3c7651d MM |
7675 | /* Store the sign-bits (which are most significant) |
7676 | first. */ | |
7677 | low_bits = sign_bits; | |
7678 | high_bits = value; | |
7679 | } | |
7680 | else | |
7681 | { | |
7682 | low_bits = value; | |
7683 | high_bits = sign_bits; | |
7684 | } | |
be3ccd9c | 7685 | bfd_put_32 (input_bfd, low_bits, |
a3c7651d | 7686 | contents + rel->r_offset); |
be3ccd9c | 7687 | bfd_put_32 (input_bfd, high_bits, |
a3c7651d MM |
7688 | contents + rel->r_offset + 4); |
7689 | continue; | |
a3c7651d MM |
7690 | } |
7691 | ||
7403cb63 | 7692 | /* Actually perform the relocation. */ |
be3ccd9c | 7693 | if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd, |
197b9ca0 MM |
7694 | input_section, contents, |
7695 | require_jalx)) | |
7696 | return false; | |
252b5132 RH |
7697 | } |
7698 | ||
7699 | return true; | |
7700 | } | |
7701 | ||
7702 | /* This hook function is called before the linker writes out a global | |
7703 | symbol. We mark symbols as small common if appropriate. This is | |
7704 | also where we undo the increment of the value for a mips16 symbol. */ | |
7705 | ||
103186c6 MM |
7706 | boolean |
7707 | _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
5f771d47 ILT |
7708 | bfd *abfd ATTRIBUTE_UNUSED; |
7709 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
7710 | const char *name ATTRIBUTE_UNUSED; | |
252b5132 RH |
7711 | Elf_Internal_Sym *sym; |
7712 | asection *input_sec; | |
7713 | { | |
7714 | /* If we see a common symbol, which implies a relocatable link, then | |
7715 | if a symbol was small common in an input file, mark it as small | |
7716 | common in the output file. */ | |
7717 | if (sym->st_shndx == SHN_COMMON | |
7718 | && strcmp (input_sec->name, ".scommon") == 0) | |
7719 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7720 | ||
7721 | if (sym->st_other == STO_MIPS16 | |
7722 | && (sym->st_value & 1) != 0) | |
7723 | --sym->st_value; | |
7724 | ||
7725 | return true; | |
7726 | } | |
7727 | \f | |
7728 | /* Functions for the dynamic linker. */ | |
7729 | ||
7730 | /* The name of the dynamic interpreter. This is put in the .interp | |
7731 | section. */ | |
7732 | ||
103186c6 MM |
7733 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ |
7734 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
7735 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
7736 | : "/usr/lib/libc.so.1") | |
252b5132 RH |
7737 | |
7738 | /* Create dynamic sections when linking against a dynamic object. */ | |
7739 | ||
103186c6 MM |
7740 | boolean |
7741 | _bfd_mips_elf_create_dynamic_sections (abfd, info) | |
252b5132 RH |
7742 | bfd *abfd; |
7743 | struct bfd_link_info *info; | |
7744 | { | |
7745 | struct elf_link_hash_entry *h; | |
7746 | flagword flags; | |
7747 | register asection *s; | |
7748 | const char * const *namep; | |
7749 | ||
7750 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
7751 | | SEC_LINKER_CREATED | SEC_READONLY); | |
7752 | ||
7753 | /* Mips ABI requests the .dynamic section to be read only. */ | |
7754 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
7755 | if (s != NULL) | |
7756 | { | |
7757 | if (! bfd_set_section_flags (abfd, s, flags)) | |
7758 | return false; | |
7759 | } | |
7760 | ||
7761 | /* We need to create .got section. */ | |
7762 | if (! mips_elf_create_got_section (abfd, info)) | |
7763 | return false; | |
7764 | ||
c6142e5d MM |
7765 | /* Create the .msym section on IRIX6. It is used by the dynamic |
7766 | linker to speed up dynamic relocations, and to avoid computing | |
7767 | the ELF hash for symbols. */ | |
7768 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
7769 | && !mips_elf_create_msym_section (abfd)) | |
7770 | return false; | |
be3ccd9c | 7771 | |
252b5132 | 7772 | /* Create .stub section. */ |
be3ccd9c | 7773 | if (bfd_get_section_by_name (abfd, |
7403cb63 | 7774 | MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL) |
252b5132 | 7775 | { |
7403cb63 | 7776 | s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd)); |
252b5132 | 7777 | if (s == NULL |
7403cb63 | 7778 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) |
103186c6 MM |
7779 | || ! bfd_set_section_alignment (abfd, s, |
7780 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
252b5132 RH |
7781 | return false; |
7782 | } | |
7783 | ||
31a9bdd9 | 7784 | if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none) |
252b5132 RH |
7785 | && !info->shared |
7786 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
7787 | { | |
7788 | s = bfd_make_section (abfd, ".rld_map"); | |
7789 | if (s == NULL | |
dc810e39 | 7790 | || ! bfd_set_section_flags (abfd, s, flags &~ (flagword) SEC_READONLY) |
103186c6 MM |
7791 | || ! bfd_set_section_alignment (abfd, s, |
7792 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
252b5132 RH |
7793 | return false; |
7794 | } | |
7795 | ||
303f629d MM |
7796 | /* On IRIX5, we adjust add some additional symbols and change the |
7797 | alignments of several sections. There is no ABI documentation | |
7798 | indicating that this is necessary on IRIX6, nor any evidence that | |
7799 | the linker takes such action. */ | |
7800 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
252b5132 RH |
7801 | { |
7802 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
7803 | { | |
7804 | h = NULL; | |
7805 | if (! (_bfd_generic_link_add_one_symbol | |
7806 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, | |
7807 | (bfd_vma) 0, (const char *) NULL, false, | |
7808 | get_elf_backend_data (abfd)->collect, | |
7809 | (struct bfd_link_hash_entry **) &h))) | |
7810 | return false; | |
be3ccd9c | 7811 | h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; |
252b5132 RH |
7812 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
7813 | h->type = STT_SECTION; | |
7814 | ||
7815 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
7816 | return false; | |
7817 | } | |
7818 | ||
7819 | /* We need to create a .compact_rel section. */ | |
f7cb7d68 | 7820 | if (SGI_COMPAT (abfd)) |
be3ccd9c KH |
7821 | { |
7822 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
f7cb7d68 | 7823 | return false; |
be3ccd9c | 7824 | } |
252b5132 RH |
7825 | |
7826 | /* Change aligments of some sections. */ | |
7827 | s = bfd_get_section_by_name (abfd, ".hash"); | |
7828 | if (s != NULL) | |
7829 | bfd_set_section_alignment (abfd, s, 4); | |
7830 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
7831 | if (s != NULL) | |
7832 | bfd_set_section_alignment (abfd, s, 4); | |
7833 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
7834 | if (s != NULL) | |
7835 | bfd_set_section_alignment (abfd, s, 4); | |
7836 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
7837 | if (s != NULL) | |
7838 | bfd_set_section_alignment (abfd, s, 4); | |
7839 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
7840 | if (s != NULL) | |
7841 | bfd_set_section_alignment (abfd, s, 4); | |
7842 | } | |
7843 | ||
7844 | if (!info->shared) | |
7845 | { | |
7846 | h = NULL; | |
f7cb7d68 | 7847 | if (SGI_COMPAT (abfd)) |
be3ccd9c KH |
7848 | { |
7849 | if (!(_bfd_generic_link_add_one_symbol | |
7850 | (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr, | |
7851 | (bfd_vma) 0, (const char *) NULL, false, | |
7852 | get_elf_backend_data (abfd)->collect, | |
7853 | (struct bfd_link_hash_entry **) &h))) | |
f7cb7d68 | 7854 | return false; |
be3ccd9c | 7855 | } |
f7cb7d68 | 7856 | else |
be3ccd9c KH |
7857 | { |
7858 | /* For normal mips it is _DYNAMIC_LINKING. */ | |
7859 | if (!(_bfd_generic_link_add_one_symbol | |
7860 | (info, abfd, "_DYNAMIC_LINKING", BSF_GLOBAL, | |
7861 | bfd_abs_section_ptr, (bfd_vma) 0, (const char *) NULL, false, | |
7862 | get_elf_backend_data (abfd)->collect, | |
7863 | (struct bfd_link_hash_entry **) &h))) | |
7864 | return false; | |
7865 | } | |
7866 | h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; | |
252b5132 RH |
7867 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
7868 | h->type = STT_SECTION; | |
7869 | ||
7870 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
7871 | return false; | |
7872 | ||
7873 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
7874 | { | |
7875 | /* __rld_map is a four byte word located in the .data section | |
7876 | and is filled in by the rtld to contain a pointer to | |
7877 | the _r_debug structure. Its symbol value will be set in | |
7878 | mips_elf_finish_dynamic_symbol. */ | |
7879 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
7880 | BFD_ASSERT (s != NULL); | |
7881 | ||
7882 | h = NULL; | |
be3ccd9c KH |
7883 | if (SGI_COMPAT (abfd)) |
7884 | { | |
7885 | if (!(_bfd_generic_link_add_one_symbol | |
7886 | (info, abfd, "__rld_map", BSF_GLOBAL, s, | |
7887 | (bfd_vma) 0, (const char *) NULL, false, | |
7888 | get_elf_backend_data (abfd)->collect, | |
7889 | (struct bfd_link_hash_entry **) &h))) | |
7890 | return false; | |
7891 | } | |
7892 | else | |
7893 | { | |
7894 | /* For normal mips the symbol is __RLD_MAP. */ | |
7895 | if (!(_bfd_generic_link_add_one_symbol | |
7896 | (info, abfd, "__RLD_MAP", BSF_GLOBAL, s, | |
7897 | (bfd_vma) 0, (const char *) NULL, false, | |
7898 | get_elf_backend_data (abfd)->collect, | |
7899 | (struct bfd_link_hash_entry **) &h))) | |
7900 | return false; | |
7901 | } | |
7902 | h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; | |
252b5132 RH |
7903 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
7904 | h->type = STT_OBJECT; | |
7905 | ||
7906 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
7907 | return false; | |
7908 | } | |
7909 | } | |
7910 | ||
7911 | return true; | |
7912 | } | |
7913 | ||
7914 | /* Create the .compact_rel section. */ | |
7915 | ||
7916 | static boolean | |
7917 | mips_elf_create_compact_rel_section (abfd, info) | |
7918 | bfd *abfd; | |
5f771d47 | 7919 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
7920 | { |
7921 | flagword flags; | |
7922 | register asection *s; | |
7923 | ||
7924 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
7925 | { | |
7926 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
7927 | | SEC_READONLY); | |
7928 | ||
7929 | s = bfd_make_section (abfd, ".compact_rel"); | |
7930 | if (s == NULL | |
7931 | || ! bfd_set_section_flags (abfd, s, flags) | |
103186c6 MM |
7932 | || ! bfd_set_section_alignment (abfd, s, |
7933 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
252b5132 RH |
7934 | return false; |
7935 | ||
7936 | s->_raw_size = sizeof (Elf32_External_compact_rel); | |
7937 | } | |
7938 | ||
7939 | return true; | |
7940 | } | |
7941 | ||
be3ccd9c | 7942 | /* Create the .got section to hold the global offset table. */ |
252b5132 RH |
7943 | |
7944 | static boolean | |
7945 | mips_elf_create_got_section (abfd, info) | |
7946 | bfd *abfd; | |
7947 | struct bfd_link_info *info; | |
7948 | { | |
7949 | flagword flags; | |
7950 | register asection *s; | |
7951 | struct elf_link_hash_entry *h; | |
7952 | struct mips_got_info *g; | |
dc810e39 | 7953 | bfd_size_type amt; |
252b5132 RH |
7954 | |
7955 | /* This function may be called more than once. */ | |
103186c6 | 7956 | if (mips_elf_got_section (abfd)) |
252b5132 RH |
7957 | return true; |
7958 | ||
7959 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
7960 | | SEC_LINKER_CREATED); | |
7961 | ||
7962 | s = bfd_make_section (abfd, ".got"); | |
7963 | if (s == NULL | |
7964 | || ! bfd_set_section_flags (abfd, s, flags) | |
7965 | || ! bfd_set_section_alignment (abfd, s, 4)) | |
7966 | return false; | |
7967 | ||
7968 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
7969 | linker script because we don't want to define the symbol if we | |
7970 | are not creating a global offset table. */ | |
7971 | h = NULL; | |
7972 | if (! (_bfd_generic_link_add_one_symbol | |
7973 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
7974 | (bfd_vma) 0, (const char *) NULL, false, | |
7975 | get_elf_backend_data (abfd)->collect, | |
7976 | (struct bfd_link_hash_entry **) &h))) | |
7977 | return false; | |
be3ccd9c | 7978 | h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; |
252b5132 RH |
7979 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
7980 | h->type = STT_OBJECT; | |
7981 | ||
7982 | if (info->shared | |
7983 | && ! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
7984 | return false; | |
7985 | ||
7986 | /* The first several global offset table entries are reserved. */ | |
103186c6 | 7987 | s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd); |
252b5132 | 7988 | |
dc810e39 AM |
7989 | amt = sizeof (struct mips_got_info); |
7990 | g = (struct mips_got_info *) bfd_alloc (abfd, amt); | |
252b5132 RH |
7991 | if (g == NULL) |
7992 | return false; | |
7403cb63 | 7993 | g->global_gotsym = NULL; |
252b5132 RH |
7994 | g->local_gotno = MIPS_RESERVED_GOTNO; |
7995 | g->assigned_gotno = MIPS_RESERVED_GOTNO; | |
7996 | if (elf_section_data (s) == NULL) | |
7997 | { | |
dc810e39 AM |
7998 | amt = sizeof (struct bfd_elf_section_data); |
7999 | s->used_by_bfd = (PTR) bfd_zalloc (abfd, amt); | |
252b5132 RH |
8000 | if (elf_section_data (s) == NULL) |
8001 | return false; | |
8002 | } | |
8003 | elf_section_data (s)->tdata = (PTR) g; | |
be3ccd9c | 8004 | elf_section_data (s)->this_hdr.sh_flags |
7403cb63 | 8005 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
252b5132 RH |
8006 | |
8007 | return true; | |
8008 | } | |
8009 | ||
c6142e5d MM |
8010 | /* Returns the .msym section for ABFD, creating it if it does not |
8011 | already exist. Returns NULL to indicate error. */ | |
8012 | ||
8013 | static asection * | |
8014 | mips_elf_create_msym_section (abfd) | |
8015 | bfd *abfd; | |
8016 | { | |
8017 | asection *s; | |
8018 | ||
8019 | s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd)); | |
be3ccd9c | 8020 | if (!s) |
c6142e5d MM |
8021 | { |
8022 | s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd)); | |
8023 | if (!s | |
be3ccd9c | 8024 | || !bfd_set_section_flags (abfd, s, |
c6142e5d MM |
8025 | SEC_ALLOC |
8026 | | SEC_LOAD | |
8027 | | SEC_HAS_CONTENTS | |
be3ccd9c | 8028 | | SEC_LINKER_CREATED |
c6142e5d | 8029 | | SEC_READONLY) |
103186c6 MM |
8030 | || !bfd_set_section_alignment (abfd, s, |
8031 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
c6142e5d MM |
8032 | return NULL; |
8033 | } | |
8034 | ||
8035 | return s; | |
8036 | } | |
8037 | ||
103186c6 MM |
8038 | /* Add room for N relocations to the .rel.dyn section in ABFD. */ |
8039 | ||
8040 | static void | |
8041 | mips_elf_allocate_dynamic_relocations (abfd, n) | |
8042 | bfd *abfd; | |
8043 | unsigned int n; | |
8044 | { | |
8045 | asection *s; | |
8046 | ||
8047 | s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd)); | |
8048 | BFD_ASSERT (s != NULL); | |
be3ccd9c | 8049 | |
103186c6 MM |
8050 | if (s->_raw_size == 0) |
8051 | { | |
be3ccd9c | 8052 | /* Make room for a null element. */ |
103186c6 MM |
8053 | s->_raw_size += MIPS_ELF_REL_SIZE (abfd); |
8054 | ++s->reloc_count; | |
8055 | } | |
8056 | s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd); | |
8057 | } | |
8058 | ||
252b5132 RH |
8059 | /* Look through the relocs for a section during the first phase, and |
8060 | allocate space in the global offset table. */ | |
8061 | ||
103186c6 MM |
8062 | boolean |
8063 | _bfd_mips_elf_check_relocs (abfd, info, sec, relocs) | |
252b5132 RH |
8064 | bfd *abfd; |
8065 | struct bfd_link_info *info; | |
8066 | asection *sec; | |
8067 | const Elf_Internal_Rela *relocs; | |
8068 | { | |
8069 | const char *name; | |
8070 | bfd *dynobj; | |
8071 | Elf_Internal_Shdr *symtab_hdr; | |
8072 | struct elf_link_hash_entry **sym_hashes; | |
8073 | struct mips_got_info *g; | |
8074 | size_t extsymoff; | |
8075 | const Elf_Internal_Rela *rel; | |
8076 | const Elf_Internal_Rela *rel_end; | |
8077 | asection *sgot; | |
8078 | asection *sreloc; | |
103186c6 | 8079 | struct elf_backend_data *bed; |
252b5132 RH |
8080 | |
8081 | if (info->relocateable) | |
8082 | return true; | |
8083 | ||
8084 | dynobj = elf_hash_table (info)->dynobj; | |
8085 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8086 | sym_hashes = elf_sym_hashes (abfd); | |
8087 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8088 | ||
8089 | /* Check for the mips16 stub sections. */ | |
8090 | ||
8091 | name = bfd_get_section_name (abfd, sec); | |
8092 | if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) | |
8093 | { | |
8094 | unsigned long r_symndx; | |
8095 | ||
8096 | /* Look at the relocation information to figure out which symbol | |
8097 | this is for. */ | |
8098 | ||
8099 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
8100 | ||
8101 | if (r_symndx < extsymoff | |
8102 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8103 | { | |
8104 | asection *o; | |
8105 | ||
8106 | /* This stub is for a local symbol. This stub will only be | |
8107 | needed if there is some relocation in this BFD, other | |
8108 | than a 16 bit function call, which refers to this symbol. */ | |
8109 | for (o = abfd->sections; o != NULL; o = o->next) | |
8110 | { | |
8111 | Elf_Internal_Rela *sec_relocs; | |
8112 | const Elf_Internal_Rela *r, *rend; | |
8113 | ||
8114 | /* We can ignore stub sections when looking for relocs. */ | |
8115 | if ((o->flags & SEC_RELOC) == 0 | |
8116 | || o->reloc_count == 0 | |
8117 | || strncmp (bfd_get_section_name (abfd, o), FN_STUB, | |
8118 | sizeof FN_STUB - 1) == 0 | |
8119 | || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, | |
8120 | sizeof CALL_STUB - 1) == 0 | |
8121 | || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, | |
8122 | sizeof CALL_FP_STUB - 1) == 0) | |
8123 | continue; | |
8124 | ||
8125 | sec_relocs = (_bfd_elf32_link_read_relocs | |
8126 | (abfd, o, (PTR) NULL, | |
8127 | (Elf_Internal_Rela *) NULL, | |
8128 | info->keep_memory)); | |
8129 | if (sec_relocs == NULL) | |
8130 | return false; | |
8131 | ||
8132 | rend = sec_relocs + o->reloc_count; | |
8133 | for (r = sec_relocs; r < rend; r++) | |
8134 | if (ELF32_R_SYM (r->r_info) == r_symndx | |
8135 | && ELF32_R_TYPE (r->r_info) != R_MIPS16_26) | |
8136 | break; | |
8137 | ||
8138 | if (! info->keep_memory) | |
8139 | free (sec_relocs); | |
8140 | ||
8141 | if (r < rend) | |
8142 | break; | |
8143 | } | |
8144 | ||
8145 | if (o == NULL) | |
8146 | { | |
8147 | /* There is no non-call reloc for this stub, so we do | |
8148 | not need it. Since this function is called before | |
8149 | the linker maps input sections to output sections, we | |
8150 | can easily discard it by setting the SEC_EXCLUDE | |
8151 | flag. */ | |
8152 | sec->flags |= SEC_EXCLUDE; | |
8153 | return true; | |
8154 | } | |
8155 | ||
8156 | /* Record this stub in an array of local symbol stubs for | |
be3ccd9c | 8157 | this BFD. */ |
252b5132 RH |
8158 | if (elf_tdata (abfd)->local_stubs == NULL) |
8159 | { | |
8160 | unsigned long symcount; | |
8161 | asection **n; | |
dc810e39 | 8162 | bfd_size_type amt; |
252b5132 RH |
8163 | |
8164 | if (elf_bad_symtab (abfd)) | |
d9bc7a44 | 8165 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); |
252b5132 RH |
8166 | else |
8167 | symcount = symtab_hdr->sh_info; | |
dc810e39 AM |
8168 | amt = symcount * sizeof (asection *); |
8169 | n = (asection **) bfd_zalloc (abfd, amt); | |
252b5132 RH |
8170 | if (n == NULL) |
8171 | return false; | |
8172 | elf_tdata (abfd)->local_stubs = n; | |
8173 | } | |
8174 | ||
8175 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; | |
8176 | ||
8177 | /* We don't need to set mips16_stubs_seen in this case. | |
8178 | That flag is used to see whether we need to look through | |
8179 | the global symbol table for stubs. We don't need to set | |
8180 | it here, because we just have a local stub. */ | |
8181 | } | |
8182 | else | |
8183 | { | |
8184 | struct mips_elf_link_hash_entry *h; | |
8185 | ||
8186 | h = ((struct mips_elf_link_hash_entry *) | |
8187 | sym_hashes[r_symndx - extsymoff]); | |
8188 | ||
8189 | /* H is the symbol this stub is for. */ | |
8190 | ||
8191 | h->fn_stub = sec; | |
8192 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
8193 | } | |
8194 | } | |
8195 | else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
8196 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
8197 | { | |
8198 | unsigned long r_symndx; | |
8199 | struct mips_elf_link_hash_entry *h; | |
8200 | asection **loc; | |
8201 | ||
8202 | /* Look at the relocation information to figure out which symbol | |
8203 | this is for. */ | |
8204 | ||
8205 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
8206 | ||
8207 | if (r_symndx < extsymoff | |
8208 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8209 | { | |
8210 | /* This stub was actually built for a static symbol defined | |
8211 | in the same file. We assume that all static symbols in | |
8212 | mips16 code are themselves mips16, so we can simply | |
8213 | discard this stub. Since this function is called before | |
8214 | the linker maps input sections to output sections, we can | |
8215 | easily discard it by setting the SEC_EXCLUDE flag. */ | |
8216 | sec->flags |= SEC_EXCLUDE; | |
8217 | return true; | |
8218 | } | |
8219 | ||
8220 | h = ((struct mips_elf_link_hash_entry *) | |
8221 | sym_hashes[r_symndx - extsymoff]); | |
8222 | ||
8223 | /* H is the symbol this stub is for. */ | |
8224 | ||
8225 | if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
8226 | loc = &h->call_fp_stub; | |
8227 | else | |
8228 | loc = &h->call_stub; | |
8229 | ||
8230 | /* If we already have an appropriate stub for this function, we | |
8231 | don't need another one, so we can discard this one. Since | |
8232 | this function is called before the linker maps input sections | |
8233 | to output sections, we can easily discard it by setting the | |
8234 | SEC_EXCLUDE flag. We can also discard this section if we | |
8235 | happen to already know that this is a mips16 function; it is | |
8236 | not necessary to check this here, as it is checked later, but | |
8237 | it is slightly faster to check now. */ | |
8238 | if (*loc != NULL || h->root.other == STO_MIPS16) | |
8239 | { | |
8240 | sec->flags |= SEC_EXCLUDE; | |
8241 | return true; | |
8242 | } | |
8243 | ||
8244 | *loc = sec; | |
8245 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
8246 | } | |
8247 | ||
8248 | if (dynobj == NULL) | |
8249 | { | |
8250 | sgot = NULL; | |
8251 | g = NULL; | |
8252 | } | |
8253 | else | |
8254 | { | |
103186c6 | 8255 | sgot = mips_elf_got_section (dynobj); |
252b5132 RH |
8256 | if (sgot == NULL) |
8257 | g = NULL; | |
8258 | else | |
8259 | { | |
8260 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
8261 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
8262 | BFD_ASSERT (g != NULL); | |
8263 | } | |
8264 | } | |
8265 | ||
8266 | sreloc = NULL; | |
103186c6 MM |
8267 | bed = get_elf_backend_data (abfd); |
8268 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
8269 | for (rel = relocs; rel < rel_end; ++rel) | |
252b5132 RH |
8270 | { |
8271 | unsigned long r_symndx; | |
dc810e39 | 8272 | unsigned int r_type; |
252b5132 RH |
8273 | struct elf_link_hash_entry *h; |
8274 | ||
8275 | r_symndx = ELF32_R_SYM (rel->r_info); | |
7403cb63 | 8276 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 RH |
8277 | |
8278 | if (r_symndx < extsymoff) | |
8279 | h = NULL; | |
d9bc7a44 | 8280 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) |
7a3120d9 | 8281 | { |
8f615d07 AM |
8282 | (*_bfd_error_handler) |
8283 | (_("%s: Malformed reloc detected for section %s"), | |
8284 | bfd_archive_filename (abfd), name); | |
7a3120d9 NC |
8285 | bfd_set_error (bfd_error_bad_value); |
8286 | return false; | |
8287 | } | |
252b5132 RH |
8288 | else |
8289 | { | |
8290 | h = sym_hashes[r_symndx - extsymoff]; | |
8291 | ||
8292 | /* This may be an indirect symbol created because of a version. */ | |
8293 | if (h != NULL) | |
8294 | { | |
8295 | while (h->root.type == bfd_link_hash_indirect) | |
8296 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8297 | } | |
8298 | } | |
8299 | ||
8300 | /* Some relocs require a global offset table. */ | |
8301 | if (dynobj == NULL || sgot == NULL) | |
8302 | { | |
7403cb63 | 8303 | switch (r_type) |
252b5132 RH |
8304 | { |
8305 | case R_MIPS_GOT16: | |
8306 | case R_MIPS_CALL16: | |
8307 | case R_MIPS_CALL_HI16: | |
8308 | case R_MIPS_CALL_LO16: | |
8309 | case R_MIPS_GOT_HI16: | |
8310 | case R_MIPS_GOT_LO16: | |
435394bf MM |
8311 | case R_MIPS_GOT_PAGE: |
8312 | case R_MIPS_GOT_OFST: | |
8313 | case R_MIPS_GOT_DISP: | |
252b5132 RH |
8314 | if (dynobj == NULL) |
8315 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
8316 | if (! mips_elf_create_got_section (dynobj, info)) | |
8317 | return false; | |
7403cb63 | 8318 | g = mips_elf_got_info (dynobj, &sgot); |
252b5132 RH |
8319 | break; |
8320 | ||
8321 | case R_MIPS_32: | |
8322 | case R_MIPS_REL32: | |
a3c7651d | 8323 | case R_MIPS_64: |
252b5132 RH |
8324 | if (dynobj == NULL |
8325 | && (info->shared || h != NULL) | |
8326 | && (sec->flags & SEC_ALLOC) != 0) | |
8327 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
8328 | break; | |
8329 | ||
8330 | default: | |
8331 | break; | |
8332 | } | |
8333 | } | |
8334 | ||
7403cb63 MM |
8335 | if (!h && (r_type == R_MIPS_CALL_LO16 |
8336 | || r_type == R_MIPS_GOT_LO16 | |
9458945f | 8337 | || r_type == R_MIPS_GOT_DISP)) |
252b5132 | 8338 | { |
7403cb63 | 8339 | /* We may need a local GOT entry for this relocation. We |
97287574 MM |
8340 | don't count R_MIPS_GOT_PAGE because we can estimate the |
8341 | maximum number of pages needed by looking at the size of | |
9117d219 NC |
8342 | the segment. Similar comments apply to R_MIPS_GOT16 and |
8343 | R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or | |
8344 | R_MIPS_CALL_HI16 because these are always followed by an | |
8345 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. | |
7403cb63 MM |
8346 | |
8347 | This estimation is very conservative since we can merge | |
8348 | duplicate entries in the GOT. In order to be less | |
8349 | conservative, we could actually build the GOT here, | |
8350 | rather than in relocate_section. */ | |
8351 | g->local_gotno++; | |
a3c7651d | 8352 | sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj); |
7403cb63 | 8353 | } |
252b5132 | 8354 | |
7403cb63 MM |
8355 | switch (r_type) |
8356 | { | |
8357 | case R_MIPS_CALL16: | |
252b5132 RH |
8358 | if (h == NULL) |
8359 | { | |
8360 | (*_bfd_error_handler) | |
8361 | (_("%s: CALL16 reloc at 0x%lx not against global symbol"), | |
8f615d07 | 8362 | bfd_archive_filename (abfd), (unsigned long) rel->r_offset); |
252b5132 RH |
8363 | bfd_set_error (bfd_error_bad_value); |
8364 | return false; | |
8365 | } | |
7403cb63 | 8366 | /* Fall through. */ |
252b5132 | 8367 | |
7403cb63 MM |
8368 | case R_MIPS_CALL_HI16: |
8369 | case R_MIPS_CALL_LO16: | |
5a44662b MM |
8370 | if (h != NULL) |
8371 | { | |
8372 | /* This symbol requires a global offset table entry. */ | |
8373 | if (!mips_elf_record_global_got_symbol (h, info, g)) | |
8374 | return false; | |
252b5132 | 8375 | |
5a44662b MM |
8376 | /* We need a stub, not a plt entry for the undefined |
8377 | function. But we record it as if it needs plt. See | |
8378 | elf_adjust_dynamic_symbol in elflink.h. */ | |
8379 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
8380 | h->type = STT_FUNC; | |
8381 | } | |
252b5132 RH |
8382 | break; |
8383 | ||
8384 | case R_MIPS_GOT16: | |
8385 | case R_MIPS_GOT_HI16: | |
8386 | case R_MIPS_GOT_LO16: | |
7403cb63 | 8387 | case R_MIPS_GOT_DISP: |
252b5132 | 8388 | /* This symbol requires a global offset table entry. */ |
7403cb63 MM |
8389 | if (h && !mips_elf_record_global_got_symbol (h, info, g)) |
8390 | return false; | |
252b5132 RH |
8391 | break; |
8392 | ||
8393 | case R_MIPS_32: | |
8394 | case R_MIPS_REL32: | |
a3c7651d | 8395 | case R_MIPS_64: |
252b5132 RH |
8396 | if ((info->shared || h != NULL) |
8397 | && (sec->flags & SEC_ALLOC) != 0) | |
8398 | { | |
8399 | if (sreloc == NULL) | |
8400 | { | |
dc810e39 | 8401 | const char *dname = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj); |
252b5132 | 8402 | |
dc810e39 | 8403 | sreloc = bfd_get_section_by_name (dynobj, dname); |
252b5132 RH |
8404 | if (sreloc == NULL) |
8405 | { | |
dc810e39 | 8406 | sreloc = bfd_make_section (dynobj, dname); |
252b5132 RH |
8407 | if (sreloc == NULL |
8408 | || ! bfd_set_section_flags (dynobj, sreloc, | |
8409 | (SEC_ALLOC | |
8410 | | SEC_LOAD | |
8411 | | SEC_HAS_CONTENTS | |
8412 | | SEC_IN_MEMORY | |
8413 | | SEC_LINKER_CREATED | |
8414 | | SEC_READONLY)) | |
8415 | || ! bfd_set_section_alignment (dynobj, sreloc, | |
8416 | 4)) | |
8417 | return false; | |
8418 | } | |
8419 | } | |
43917054 | 8420 | #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) |
252b5132 | 8421 | if (info->shared) |
43917054 L |
8422 | { |
8423 | /* When creating a shared object, we must copy these | |
8424 | reloc types into the output file as R_MIPS_REL32 | |
8425 | relocs. We make room for this reloc in the | |
8426 | .rel.dyn reloc section. */ | |
8427 | mips_elf_allocate_dynamic_relocations (dynobj, 1); | |
8428 | if ((sec->flags & MIPS_READONLY_SECTION) | |
8429 | == MIPS_READONLY_SECTION) | |
8430 | /* We tell the dynamic linker that there are | |
8431 | relocations against the text segment. */ | |
8432 | info->flags |= DF_TEXTREL; | |
8433 | } | |
252b5132 RH |
8434 | else |
8435 | { | |
8436 | struct mips_elf_link_hash_entry *hmips; | |
8437 | ||
8438 | /* We only need to copy this reloc if the symbol is | |
8439 | defined in a dynamic object. */ | |
8440 | hmips = (struct mips_elf_link_hash_entry *) h; | |
a3c7651d | 8441 | ++hmips->possibly_dynamic_relocs; |
43917054 L |
8442 | if ((sec->flags & MIPS_READONLY_SECTION) |
8443 | == MIPS_READONLY_SECTION) | |
8444 | /* We need it to tell the dynamic linker if there | |
8445 | are relocations against the text segment. */ | |
8446 | hmips->readonly_reloc = true; | |
252b5132 | 8447 | } |
be3ccd9c | 8448 | |
7403cb63 MM |
8449 | /* Even though we don't directly need a GOT entry for |
8450 | this symbol, a symbol must have a dynamic symbol | |
5499724a | 8451 | table index greater that DT_MIPS_GOTSYM if there are |
7403cb63 | 8452 | dynamic relocations against it. */ |
7b1f1231 MM |
8453 | if (h != NULL |
8454 | && !mips_elf_record_global_got_symbol (h, info, g)) | |
7403cb63 | 8455 | return false; |
252b5132 RH |
8456 | } |
8457 | ||
313ba8d6 | 8458 | if (SGI_COMPAT (abfd)) |
252b5132 RH |
8459 | mips_elf_hash_table (info)->compact_rel_size += |
8460 | sizeof (Elf32_External_crinfo); | |
252b5132 RH |
8461 | break; |
8462 | ||
8463 | case R_MIPS_26: | |
8464 | case R_MIPS_GPREL16: | |
8465 | case R_MIPS_LITERAL: | |
8466 | case R_MIPS_GPREL32: | |
313ba8d6 | 8467 | if (SGI_COMPAT (abfd)) |
252b5132 RH |
8468 | mips_elf_hash_table (info)->compact_rel_size += |
8469 | sizeof (Elf32_External_crinfo); | |
8470 | break; | |
8471 | ||
8472 | /* This relocation describes the C++ object vtable hierarchy. | |
8473 | Reconstruct it for later use during GC. */ | |
8474 | case R_MIPS_GNU_VTINHERIT: | |
8475 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
8476 | return false; | |
8477 | break; | |
8478 | ||
8479 | /* This relocation describes which C++ vtable entries are actually | |
8480 | used. Record for later use during GC. */ | |
8481 | case R_MIPS_GNU_VTENTRY: | |
8482 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
8483 | return false; | |
8484 | break; | |
8485 | ||
8486 | default: | |
8487 | break; | |
8488 | } | |
8489 | ||
9117d219 NC |
8490 | /* We must not create a stub for a symbol that has relocations |
8491 | related to taking the function's address. */ | |
8492 | switch (r_type) | |
8493 | { | |
8494 | default: | |
8495 | if (h != NULL) | |
8496 | { | |
8497 | struct mips_elf_link_hash_entry *mh; | |
8498 | ||
8499 | mh = (struct mips_elf_link_hash_entry *) h; | |
8500 | mh->no_fn_stub = true; | |
8501 | } | |
8502 | break; | |
8503 | case R_MIPS_CALL16: | |
8504 | case R_MIPS_CALL_HI16: | |
8505 | case R_MIPS_CALL_LO16: | |
8506 | break; | |
8507 | } | |
8508 | ||
252b5132 RH |
8509 | /* If this reloc is not a 16 bit call, and it has a global |
8510 | symbol, then we will need the fn_stub if there is one. | |
be3ccd9c | 8511 | References from a stub section do not count. */ |
252b5132 | 8512 | if (h != NULL |
7403cb63 | 8513 | && r_type != R_MIPS16_26 |
252b5132 RH |
8514 | && strncmp (bfd_get_section_name (abfd, sec), FN_STUB, |
8515 | sizeof FN_STUB - 1) != 0 | |
8516 | && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB, | |
8517 | sizeof CALL_STUB - 1) != 0 | |
8518 | && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB, | |
8519 | sizeof CALL_FP_STUB - 1) != 0) | |
8520 | { | |
8521 | struct mips_elf_link_hash_entry *mh; | |
8522 | ||
8523 | mh = (struct mips_elf_link_hash_entry *) h; | |
8524 | mh->need_fn_stub = true; | |
8525 | } | |
8526 | } | |
8527 | ||
8528 | return true; | |
8529 | } | |
8530 | ||
8531 | /* Return the section that should be marked against GC for a given | |
8532 | relocation. */ | |
8533 | ||
103186c6 MM |
8534 | asection * |
8535 | _bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
252b5132 | 8536 | bfd *abfd; |
5f771d47 | 8537 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
8538 | Elf_Internal_Rela *rel; |
8539 | struct elf_link_hash_entry *h; | |
8540 | Elf_Internal_Sym *sym; | |
8541 | { | |
8542 | /* ??? Do mips16 stub sections need to be handled special? */ | |
8543 | ||
8544 | if (h != NULL) | |
8545 | { | |
8546 | switch (ELF32_R_TYPE (rel->r_info)) | |
8547 | { | |
8548 | case R_MIPS_GNU_VTINHERIT: | |
8549 | case R_MIPS_GNU_VTENTRY: | |
8550 | break; | |
8551 | ||
8552 | default: | |
8553 | switch (h->root.type) | |
8554 | { | |
8555 | case bfd_link_hash_defined: | |
8556 | case bfd_link_hash_defweak: | |
8557 | return h->root.u.def.section; | |
8558 | ||
8559 | case bfd_link_hash_common: | |
8560 | return h->root.u.c.p->section; | |
8561 | ||
8562 | default: | |
8563 | break; | |
8564 | } | |
8565 | } | |
8566 | } | |
8567 | else | |
8568 | { | |
9ad5cbcf | 8569 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
252b5132 RH |
8570 | } |
8571 | ||
8572 | return NULL; | |
8573 | } | |
8574 | ||
8575 | /* Update the got entry reference counts for the section being removed. */ | |
8576 | ||
103186c6 MM |
8577 | boolean |
8578 | _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
5f771d47 ILT |
8579 | bfd *abfd ATTRIBUTE_UNUSED; |
8580 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
8581 | asection *sec ATTRIBUTE_UNUSED; | |
8582 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
252b5132 RH |
8583 | { |
8584 | #if 0 | |
8585 | Elf_Internal_Shdr *symtab_hdr; | |
8586 | struct elf_link_hash_entry **sym_hashes; | |
8587 | bfd_signed_vma *local_got_refcounts; | |
8588 | const Elf_Internal_Rela *rel, *relend; | |
8589 | unsigned long r_symndx; | |
8590 | struct elf_link_hash_entry *h; | |
8591 | ||
8592 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8593 | sym_hashes = elf_sym_hashes (abfd); | |
8594 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
8595 | ||
8596 | relend = relocs + sec->reloc_count; | |
8597 | for (rel = relocs; rel < relend; rel++) | |
8598 | switch (ELF32_R_TYPE (rel->r_info)) | |
8599 | { | |
8600 | case R_MIPS_GOT16: | |
8601 | case R_MIPS_CALL16: | |
8602 | case R_MIPS_CALL_HI16: | |
8603 | case R_MIPS_CALL_LO16: | |
8604 | case R_MIPS_GOT_HI16: | |
8605 | case R_MIPS_GOT_LO16: | |
8606 | /* ??? It would seem that the existing MIPS code does no sort | |
8607 | of reference counting or whatnot on its GOT and PLT entries, | |
8608 | so it is not possible to garbage collect them at this time. */ | |
be3ccd9c | 8609 | break; |
252b5132 RH |
8610 | |
8611 | default: | |
8612 | break; | |
8613 | } | |
8614 | #endif | |
8615 | ||
8616 | return true; | |
8617 | } | |
8618 | ||
8a20f077 UC |
8619 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, |
8620 | hiding the old indirect symbol. Process additional relocation | |
58e3d09d | 8621 | information. Also called for weakdefs, in which case we just let |
8ea52284 | 8622 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ |
8a20f077 | 8623 | |
9e80ff3a | 8624 | static void |
8a20f077 UC |
8625 | _bfd_mips_elf_copy_indirect_symbol (dir, ind) |
8626 | struct elf_link_hash_entry *dir, *ind; | |
8627 | { | |
8628 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
8629 | ||
8630 | _bfd_elf_link_hash_copy_indirect (dir, ind); | |
8631 | ||
1e370bd2 | 8632 | if (ind->root.type != bfd_link_hash_indirect) |
58e3d09d AM |
8633 | return; |
8634 | ||
8a20f077 UC |
8635 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
8636 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
8637 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; | |
43917054 L |
8638 | if (indmips->readonly_reloc) |
8639 | dirmips->readonly_reloc = true; | |
8a20f077 UC |
8640 | if (dirmips->min_dyn_reloc_index == 0 |
8641 | || (indmips->min_dyn_reloc_index != 0 | |
be3ccd9c | 8642 | && indmips->min_dyn_reloc_index < dirmips->min_dyn_reloc_index)) |
8a20f077 | 8643 | dirmips->min_dyn_reloc_index = indmips->min_dyn_reloc_index; |
9117d219 NC |
8644 | if (indmips->no_fn_stub) |
8645 | dirmips->no_fn_stub = true; | |
8a20f077 UC |
8646 | } |
8647 | ||
252b5132 RH |
8648 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8649 | regular object. The current definition is in some section of the | |
8650 | dynamic object, but we're not including those sections. We have to | |
8651 | change the definition to something the rest of the link can | |
8652 | understand. */ | |
8653 | ||
103186c6 MM |
8654 | boolean |
8655 | _bfd_mips_elf_adjust_dynamic_symbol (info, h) | |
252b5132 RH |
8656 | struct bfd_link_info *info; |
8657 | struct elf_link_hash_entry *h; | |
8658 | { | |
8659 | bfd *dynobj; | |
8660 | struct mips_elf_link_hash_entry *hmips; | |
8661 | asection *s; | |
8662 | ||
8663 | dynobj = elf_hash_table (info)->dynobj; | |
8664 | ||
8665 | /* Make sure we know what is going on here. */ | |
8666 | BFD_ASSERT (dynobj != NULL | |
8667 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
8668 | || h->weakdef != NULL | |
8669 | || ((h->elf_link_hash_flags | |
8670 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
8671 | && (h->elf_link_hash_flags | |
8672 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
8673 | && (h->elf_link_hash_flags | |
8674 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
8675 | ||
8676 | /* If this symbol is defined in a dynamic object, we need to copy | |
8677 | any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output | |
8678 | file. */ | |
8679 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8680 | if (! info->relocateable | |
a3c7651d | 8681 | && hmips->possibly_dynamic_relocs != 0 |
2bab9785 | 8682 | && (h->root.type == bfd_link_hash_defweak |
dc810e39 | 8683 | || (h->elf_link_hash_flags |
2bab9785 | 8684 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
43917054 L |
8685 | { |
8686 | mips_elf_allocate_dynamic_relocations (dynobj, | |
8687 | hmips->possibly_dynamic_relocs); | |
8688 | if (hmips->readonly_reloc) | |
8689 | /* We tell the dynamic linker that there are relocations | |
8690 | against the text segment. */ | |
8691 | info->flags |= DF_TEXTREL; | |
8692 | } | |
252b5132 | 8693 | |
9117d219 NC |
8694 | /* For a function, create a stub, if allowed. */ |
8695 | if (! hmips->no_fn_stub | |
8696 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
252b5132 RH |
8697 | { |
8698 | if (! elf_hash_table (info)->dynamic_sections_created) | |
8699 | return true; | |
8700 | ||
8701 | /* If this symbol is not defined in a regular file, then set | |
8702 | the symbol to the stub location. This is required to make | |
8703 | function pointers compare as equal between the normal | |
8704 | executable and the shared library. */ | |
8705 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
8706 | { | |
8707 | /* We need .stub section. */ | |
be3ccd9c | 8708 | s = bfd_get_section_by_name (dynobj, |
303f629d | 8709 | MIPS_ELF_STUB_SECTION_NAME (dynobj)); |
252b5132 RH |
8710 | BFD_ASSERT (s != NULL); |
8711 | ||
8712 | h->root.u.def.section = s; | |
8713 | h->root.u.def.value = s->_raw_size; | |
8714 | ||
8715 | /* XXX Write this stub address somewhere. */ | |
8716 | h->plt.offset = s->_raw_size; | |
8717 | ||
8718 | /* Make room for this stub code. */ | |
8719 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
8720 | ||
8721 | /* The last half word of the stub will be filled with the index | |
8722 | of this symbol in .dynsym section. */ | |
8723 | return true; | |
8724 | } | |
8725 | } | |
f7cb7d68 | 8726 | else if ((h->type == STT_FUNC) |
be3ccd9c | 8727 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0) |
f7cb7d68 UC |
8728 | { |
8729 | /* This will set the entry for this symbol in the GOT to 0, and | |
be3ccd9c | 8730 | the dynamic linker will take care of this. */ |
f7cb7d68 UC |
8731 | h->root.u.def.value = 0; |
8732 | return true; | |
8733 | } | |
252b5132 RH |
8734 | |
8735 | /* If this is a weak symbol, and there is a real definition, the | |
8736 | processor independent code will have arranged for us to see the | |
8737 | real definition first, and we can just use the same value. */ | |
8738 | if (h->weakdef != NULL) | |
8739 | { | |
8740 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
8741 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
8742 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
8743 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
8744 | return true; | |
8745 | } | |
8746 | ||
8747 | /* This is a reference to a symbol defined by a dynamic object which | |
8748 | is not a function. */ | |
8749 | ||
8750 | return true; | |
8751 | } | |
8752 | ||
8753 | /* This function is called after all the input files have been read, | |
8754 | and the input sections have been assigned to output sections. We | |
8755 | check for any mips16 stub sections that we can discard. */ | |
8756 | ||
8757 | static boolean mips_elf_check_mips16_stubs | |
8758 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
8759 | ||
103186c6 MM |
8760 | boolean |
8761 | _bfd_mips_elf_always_size_sections (output_bfd, info) | |
252b5132 RH |
8762 | bfd *output_bfd; |
8763 | struct bfd_link_info *info; | |
8764 | { | |
8765 | asection *ri; | |
8766 | ||
8767 | /* The .reginfo section has a fixed size. */ | |
8768 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
8769 | if (ri != NULL) | |
dc810e39 AM |
8770 | bfd_set_section_size (output_bfd, ri, |
8771 | (bfd_size_type) sizeof (Elf32_External_RegInfo)); | |
252b5132 RH |
8772 | |
8773 | if (info->relocateable | |
8774 | || ! mips_elf_hash_table (info)->mips16_stubs_seen) | |
8775 | return true; | |
8776 | ||
8777 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8778 | mips_elf_check_mips16_stubs, | |
8779 | (PTR) NULL); | |
8780 | ||
8781 | return true; | |
8782 | } | |
8783 | ||
8784 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
8785 | discard them. */ | |
8786 | ||
252b5132 RH |
8787 | static boolean |
8788 | mips_elf_check_mips16_stubs (h, data) | |
8789 | struct mips_elf_link_hash_entry *h; | |
5f771d47 | 8790 | PTR data ATTRIBUTE_UNUSED; |
252b5132 RH |
8791 | { |
8792 | if (h->fn_stub != NULL | |
8793 | && ! h->need_fn_stub) | |
8794 | { | |
8795 | /* We don't need the fn_stub; the only references to this symbol | |
8796 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
8797 | being included in the link. */ | |
8798 | h->fn_stub->_raw_size = 0; | |
8799 | h->fn_stub->_cooked_size = 0; | |
be3ccd9c | 8800 | h->fn_stub->flags &= ~SEC_RELOC; |
252b5132 RH |
8801 | h->fn_stub->reloc_count = 0; |
8802 | h->fn_stub->flags |= SEC_EXCLUDE; | |
8803 | } | |
8804 | ||
8805 | if (h->call_stub != NULL | |
8806 | && h->root.other == STO_MIPS16) | |
8807 | { | |
8808 | /* We don't need the call_stub; this is a 16 bit function, so | |
8809 | calls from other 16 bit functions are OK. Clobber the size | |
8810 | to 0 to prevent it from being included in the link. */ | |
8811 | h->call_stub->_raw_size = 0; | |
8812 | h->call_stub->_cooked_size = 0; | |
be3ccd9c | 8813 | h->call_stub->flags &= ~SEC_RELOC; |
252b5132 RH |
8814 | h->call_stub->reloc_count = 0; |
8815 | h->call_stub->flags |= SEC_EXCLUDE; | |
8816 | } | |
8817 | ||
8818 | if (h->call_fp_stub != NULL | |
8819 | && h->root.other == STO_MIPS16) | |
8820 | { | |
8821 | /* We don't need the call_stub; this is a 16 bit function, so | |
8822 | calls from other 16 bit functions are OK. Clobber the size | |
8823 | to 0 to prevent it from being included in the link. */ | |
8824 | h->call_fp_stub->_raw_size = 0; | |
8825 | h->call_fp_stub->_cooked_size = 0; | |
be3ccd9c | 8826 | h->call_fp_stub->flags &= ~SEC_RELOC; |
252b5132 RH |
8827 | h->call_fp_stub->reloc_count = 0; |
8828 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
8829 | } | |
8830 | ||
8831 | return true; | |
8832 | } | |
8833 | ||
8834 | /* Set the sizes of the dynamic sections. */ | |
8835 | ||
103186c6 MM |
8836 | boolean |
8837 | _bfd_mips_elf_size_dynamic_sections (output_bfd, info) | |
252b5132 RH |
8838 | bfd *output_bfd; |
8839 | struct bfd_link_info *info; | |
8840 | { | |
8841 | bfd *dynobj; | |
8842 | asection *s; | |
8843 | boolean reltext; | |
7a12753d | 8844 | struct mips_got_info *g = NULL; |
252b5132 RH |
8845 | |
8846 | dynobj = elf_hash_table (info)->dynobj; | |
8847 | BFD_ASSERT (dynobj != NULL); | |
8848 | ||
8849 | if (elf_hash_table (info)->dynamic_sections_created) | |
8850 | { | |
8851 | /* Set the contents of the .interp section to the interpreter. */ | |
8852 | if (! info->shared) | |
8853 | { | |
8854 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8855 | BFD_ASSERT (s != NULL); | |
be3ccd9c | 8856 | s->_raw_size |
303f629d | 8857 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
be3ccd9c | 8858 | s->contents |
7403cb63 | 8859 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); |
252b5132 RH |
8860 | } |
8861 | } | |
8862 | ||
252b5132 RH |
8863 | /* The check_relocs and adjust_dynamic_symbol entry points have |
8864 | determined the sizes of the various dynamic sections. Allocate | |
8865 | memory for them. */ | |
8866 | reltext = false; | |
8867 | for (s = dynobj->sections; s != NULL; s = s->next) | |
8868 | { | |
8869 | const char *name; | |
8870 | boolean strip; | |
8871 | ||
8872 | /* It's OK to base decisions on the section name, because none | |
8873 | of the dynobj section names depend upon the input files. */ | |
8874 | name = bfd_get_section_name (dynobj, s); | |
8875 | ||
8876 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8877 | continue; | |
8878 | ||
8879 | strip = false; | |
8880 | ||
8881 | if (strncmp (name, ".rel", 4) == 0) | |
8882 | { | |
8883 | if (s->_raw_size == 0) | |
8884 | { | |
8885 | /* We only strip the section if the output section name | |
8886 | has the same name. Otherwise, there might be several | |
8887 | input sections for this output section. FIXME: This | |
8888 | code is probably not needed these days anyhow, since | |
8889 | the linker now does not create empty output sections. */ | |
8890 | if (s->output_section != NULL | |
8891 | && strcmp (name, | |
8892 | bfd_get_section_name (s->output_section->owner, | |
8893 | s->output_section)) == 0) | |
8894 | strip = true; | |
8895 | } | |
8896 | else | |
8897 | { | |
8898 | const char *outname; | |
8899 | asection *target; | |
8900 | ||
8901 | /* If this relocation section applies to a read only | |
8902 | section, then we probably need a DT_TEXTREL entry. | |
8903 | If the relocation section is .rel.dyn, we always | |
8904 | assert a DT_TEXTREL entry rather than testing whether | |
8905 | there exists a relocation to a read only section or | |
8906 | not. */ | |
8907 | outname = bfd_get_section_name (output_bfd, | |
8908 | s->output_section); | |
8909 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
8910 | if ((target != NULL | |
8911 | && (target->flags & SEC_READONLY) != 0 | |
8912 | && (target->flags & SEC_ALLOC) != 0) | |
be3ccd9c | 8913 | || strcmp (outname, |
103186c6 | 8914 | MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0) |
252b5132 RH |
8915 | reltext = true; |
8916 | ||
8917 | /* We use the reloc_count field as a counter if we need | |
8918 | to copy relocs into the output file. */ | |
be3ccd9c | 8919 | if (strcmp (name, |
103186c6 | 8920 | MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0) |
252b5132 RH |
8921 | s->reloc_count = 0; |
8922 | } | |
8923 | } | |
8924 | else if (strncmp (name, ".got", 4) == 0) | |
8925 | { | |
8926 | int i; | |
be3ccd9c KH |
8927 | bfd_size_type loadable_size = 0; |
8928 | bfd_size_type local_gotno; | |
d1cf510e | 8929 | bfd *sub; |
252b5132 | 8930 | |
be3ccd9c | 8931 | BFD_ASSERT (elf_section_data (s) != NULL); |
252b5132 | 8932 | g = (struct mips_got_info *) elf_section_data (s)->tdata; |
be3ccd9c KH |
8933 | BFD_ASSERT (g != NULL); |
8934 | ||
8935 | /* Calculate the total loadable size of the output. That | |
8936 | will give us the maximum number of GOT_PAGE entries | |
8937 | required. */ | |
8938 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
8939 | { | |
8940 | asection *subsection; | |
8941 | ||
8942 | for (subsection = sub->sections; | |
8943 | subsection; | |
8944 | subsection = subsection->next) | |
8945 | { | |
8946 | if ((subsection->flags & SEC_ALLOC) == 0) | |
8947 | continue; | |
dc810e39 AM |
8948 | loadable_size += ((subsection->_raw_size + 0xf) |
8949 | &~ (bfd_size_type) 0xf); | |
be3ccd9c KH |
8950 | } |
8951 | } | |
8952 | loadable_size += MIPS_FUNCTION_STUB_SIZE; | |
8953 | ||
8954 | /* Assume there are two loadable segments consisting of | |
8955 | contiguous sections. Is 5 enough? */ | |
8956 | local_gotno = (loadable_size >> 16) + 5; | |
9458945f MM |
8957 | if (IRIX_COMPAT (output_bfd) == ict_irix6) |
8958 | /* It's possible we will need GOT_PAGE entries as well as | |
8959 | GOT16 entries. Often, these will be able to share GOT | |
8960 | entries, but not always. */ | |
8961 | local_gotno *= 2; | |
8962 | ||
be3ccd9c KH |
8963 | g->local_gotno += local_gotno; |
8964 | s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj); | |
7403cb63 | 8965 | |
be3ccd9c KH |
8966 | /* There has to be a global GOT entry for every symbol with |
8967 | a dynamic symbol table index of DT_MIPS_GOTSYM or | |
8968 | higher. Therefore, it make sense to put those symbols | |
8969 | that need GOT entries at the end of the symbol table. We | |
8970 | do that here. */ | |
b3be9b46 | 8971 | if (!mips_elf_sort_hash_table (info, 1)) |
7403cb63 MM |
8972 | return false; |
8973 | ||
8b237a89 MM |
8974 | if (g->global_gotsym != NULL) |
8975 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; | |
8976 | else | |
8977 | /* If there are no global symbols, or none requiring | |
8978 | relocations, then GLOBAL_GOTSYM will be NULL. */ | |
8979 | i = 0; | |
b3be9b46 | 8980 | g->global_gotno = i; |
103186c6 | 8981 | s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj); |
252b5132 | 8982 | } |
303f629d | 8983 | else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0) |
252b5132 RH |
8984 | { |
8985 | /* Irix rld assumes that the function stub isn't at the end | |
8986 | of .text section. So put a dummy. XXX */ | |
8987 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
8988 | } | |
8989 | else if (! info->shared | |
8990 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
8991 | && strncmp (name, ".rld_map", 8) == 0) | |
8992 | { | |
8993 | /* We add a room for __rld_map. It will be filled in by the | |
8994 | rtld to contain a pointer to the _r_debug structure. */ | |
8995 | s->_raw_size += 4; | |
8996 | } | |
8997 | else if (SGI_COMPAT (output_bfd) | |
8998 | && strncmp (name, ".compact_rel", 12) == 0) | |
8999 | s->_raw_size += mips_elf_hash_table (info)->compact_rel_size; | |
c6142e5d MM |
9000 | else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)) |
9001 | == 0) | |
be3ccd9c | 9002 | s->_raw_size = (sizeof (Elf32_External_Msym) |
c6142e5d MM |
9003 | * (elf_hash_table (info)->dynsymcount |
9004 | + bfd_count_sections (output_bfd))); | |
252b5132 RH |
9005 | else if (strncmp (name, ".init", 5) != 0) |
9006 | { | |
9007 | /* It's not one of our sections, so don't allocate space. */ | |
9008 | continue; | |
9009 | } | |
9010 | ||
9011 | if (strip) | |
9012 | { | |
7f8d5fc9 | 9013 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
9014 | continue; |
9015 | } | |
9016 | ||
9017 | /* Allocate memory for the section contents. */ | |
303f629d | 9018 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
252b5132 RH |
9019 | if (s->contents == NULL && s->_raw_size != 0) |
9020 | { | |
9021 | bfd_set_error (bfd_error_no_memory); | |
9022 | return false; | |
9023 | } | |
252b5132 RH |
9024 | } |
9025 | ||
9026 | if (elf_hash_table (info)->dynamic_sections_created) | |
9027 | { | |
9028 | /* Add some entries to the .dynamic section. We fill in the | |
9029 | values later, in elf_mips_finish_dynamic_sections, but we | |
9030 | must add the entries now so that we get the correct size for | |
9031 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9032 | dynamic linker and used by the debugger. */ | |
9033 | if (! info->shared) | |
9034 | { | |
be3ccd9c KH |
9035 | /* SGI object has the equivalence of DT_DEBUG in the |
9036 | DT_MIPS_RLD_MAP entry. */ | |
9037 | if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
9038 | return false; | |
9039 | if (!SGI_COMPAT (output_bfd)) | |
9040 | { | |
9041 | if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
9042 | return false; | |
9043 | } | |
9044 | } | |
f7cb7d68 | 9045 | else |
be3ccd9c KH |
9046 | { |
9047 | /* Shared libraries on traditional mips have DT_DEBUG. */ | |
9048 | if (!SGI_COMPAT (output_bfd)) | |
9049 | { | |
9050 | if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
9051 | return false; | |
9052 | } | |
9053 | } | |
43917054 | 9054 | |
be3ccd9c | 9055 | if (reltext && SGI_COMPAT (output_bfd)) |
43917054 L |
9056 | info->flags |= DF_TEXTREL; |
9057 | ||
9058 | if ((info->flags & DF_TEXTREL) != 0) | |
252b5132 | 9059 | { |
103186c6 | 9060 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) |
252b5132 RH |
9061 | return false; |
9062 | } | |
9063 | ||
103186c6 | 9064 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) |
252b5132 RH |
9065 | return false; |
9066 | ||
103186c6 MM |
9067 | if (bfd_get_section_by_name (dynobj, |
9068 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj))) | |
252b5132 | 9069 | { |
103186c6 | 9070 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) |
252b5132 RH |
9071 | return false; |
9072 | ||
103186c6 | 9073 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
252b5132 RH |
9074 | return false; |
9075 | ||
103186c6 | 9076 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
252b5132 RH |
9077 | return false; |
9078 | } | |
9079 | ||
f7cb7d68 | 9080 | if (SGI_COMPAT (output_bfd)) |
be3ccd9c KH |
9081 | { |
9082 | if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0)) | |
f7cb7d68 | 9083 | return false; |
be3ccd9c | 9084 | } |
252b5132 | 9085 | |
f7cb7d68 | 9086 | if (SGI_COMPAT (output_bfd)) |
be3ccd9c KH |
9087 | { |
9088 | if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0)) | |
f7cb7d68 | 9089 | return false; |
be3ccd9c | 9090 | } |
252b5132 RH |
9091 | |
9092 | if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) | |
9093 | { | |
103186c6 | 9094 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0)) |
252b5132 RH |
9095 | return false; |
9096 | ||
9097 | s = bfd_get_section_by_name (dynobj, ".liblist"); | |
9098 | BFD_ASSERT (s != NULL); | |
9099 | ||
103186c6 | 9100 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0)) |
252b5132 RH |
9101 | return false; |
9102 | } | |
9103 | ||
103186c6 | 9104 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
252b5132 RH |
9105 | return false; |
9106 | ||
103186c6 | 9107 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
252b5132 RH |
9108 | return false; |
9109 | ||
9110 | #if 0 | |
9111 | /* Time stamps in executable files are a bad idea. */ | |
103186c6 | 9112 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0)) |
252b5132 RH |
9113 | return false; |
9114 | #endif | |
9115 | ||
9116 | #if 0 /* FIXME */ | |
103186c6 | 9117 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0)) |
252b5132 RH |
9118 | return false; |
9119 | #endif | |
9120 | ||
9121 | #if 0 /* FIXME */ | |
103186c6 | 9122 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0)) |
252b5132 RH |
9123 | return false; |
9124 | #endif | |
9125 | ||
103186c6 | 9126 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
252b5132 RH |
9127 | return false; |
9128 | ||
103186c6 | 9129 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
252b5132 RH |
9130 | return false; |
9131 | ||
103186c6 | 9132 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
252b5132 RH |
9133 | return false; |
9134 | ||
103186c6 | 9135 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
252b5132 RH |
9136 | return false; |
9137 | ||
5499724a | 9138 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
252b5132 RH |
9139 | return false; |
9140 | ||
7403cb63 | 9141 | if (IRIX_COMPAT (dynobj) == ict_irix5 |
103186c6 | 9142 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) |
252b5132 RH |
9143 | return false; |
9144 | ||
7403cb63 | 9145 | if (IRIX_COMPAT (dynobj) == ict_irix6 |
be3ccd9c | 9146 | && (bfd_get_section_by_name |
7403cb63 | 9147 | (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
103186c6 | 9148 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
7403cb63 | 9149 | return false; |
c6142e5d | 9150 | |
be3ccd9c | 9151 | if (bfd_get_section_by_name (dynobj, |
c6142e5d | 9152 | MIPS_ELF_MSYM_SECTION_NAME (dynobj)) |
103186c6 | 9153 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0)) |
c6142e5d | 9154 | return false; |
252b5132 RH |
9155 | } |
9156 | ||
252b5132 RH |
9157 | return true; |
9158 | } | |
9159 | ||
7403cb63 MM |
9160 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
9161 | adjust it appropriately now. */ | |
9162 | ||
9163 | static void | |
9164 | mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym) | |
5f771d47 | 9165 | bfd *abfd ATTRIBUTE_UNUSED; |
7403cb63 MM |
9166 | const char *name; |
9167 | Elf_Internal_Sym *sym; | |
9168 | { | |
9169 | /* The linker script takes care of providing names and values for | |
9170 | these, but we must place them into the right sections. */ | |
9171 | static const char* const text_section_symbols[] = { | |
9172 | "_ftext", | |
9173 | "_etext", | |
9174 | "__dso_displacement", | |
9175 | "__elf_header", | |
9176 | "__program_header_table", | |
9177 | NULL | |
9178 | }; | |
9179 | ||
9180 | static const char* const data_section_symbols[] = { | |
9181 | "_fdata", | |
9182 | "_edata", | |
9183 | "_end", | |
9184 | "_fbss", | |
9185 | NULL | |
9186 | }; | |
9187 | ||
9188 | const char* const *p; | |
9189 | int i; | |
9190 | ||
9191 | for (i = 0; i < 2; ++i) | |
be3ccd9c | 9192 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; |
7403cb63 MM |
9193 | *p; |
9194 | ++p) | |
9195 | if (strcmp (*p, name) == 0) | |
9196 | { | |
9197 | /* All of these symbols are given type STT_SECTION by the | |
9198 | IRIX6 linker. */ | |
9199 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
be3ccd9c | 9200 | |
7403cb63 MM |
9201 | /* The IRIX linker puts these symbols in special sections. */ |
9202 | if (i == 0) | |
9203 | sym->st_shndx = SHN_MIPS_TEXT; | |
9204 | else | |
9205 | sym->st_shndx = SHN_MIPS_DATA; | |
be3ccd9c | 9206 | |
7403cb63 MM |
9207 | break; |
9208 | } | |
9209 | } | |
9210 | ||
252b5132 RH |
9211 | /* Finish up dynamic symbol handling. We set the contents of various |
9212 | dynamic sections here. */ | |
9213 | ||
103186c6 MM |
9214 | boolean |
9215 | _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
252b5132 RH |
9216 | bfd *output_bfd; |
9217 | struct bfd_link_info *info; | |
9218 | struct elf_link_hash_entry *h; | |
9219 | Elf_Internal_Sym *sym; | |
9220 | { | |
9221 | bfd *dynobj; | |
9222 | bfd_vma gval; | |
9223 | asection *sgot; | |
c6142e5d | 9224 | asection *smsym; |
252b5132 RH |
9225 | struct mips_got_info *g; |
9226 | const char *name; | |
c6142e5d | 9227 | struct mips_elf_link_hash_entry *mh; |
252b5132 RH |
9228 | |
9229 | dynobj = elf_hash_table (info)->dynobj; | |
9230 | gval = sym->st_value; | |
c6142e5d | 9231 | mh = (struct mips_elf_link_hash_entry *) h; |
252b5132 RH |
9232 | |
9233 | if (h->plt.offset != (bfd_vma) -1) | |
9234 | { | |
9235 | asection *s; | |
9236 | bfd_byte *p; | |
9237 | bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; | |
9238 | ||
9239 | /* This symbol has a stub. Set it up. */ | |
9240 | ||
9241 | BFD_ASSERT (h->dynindx != -1); | |
9242 | ||
be3ccd9c | 9243 | s = bfd_get_section_by_name (dynobj, |
303f629d | 9244 | MIPS_ELF_STUB_SECTION_NAME (dynobj)); |
252b5132 RH |
9245 | BFD_ASSERT (s != NULL); |
9246 | ||
9247 | /* Fill the stub. */ | |
9248 | p = stub; | |
dc810e39 | 9249 | bfd_put_32 (output_bfd, (bfd_vma) STUB_LW (output_bfd), p); |
252b5132 | 9250 | p += 4; |
dc810e39 | 9251 | bfd_put_32 (output_bfd, (bfd_vma) STUB_MOVE (output_bfd), p); |
252b5132 RH |
9252 | p += 4; |
9253 | ||
9254 | /* FIXME: Can h->dynindex be more than 64K? */ | |
9255 | if (h->dynindx & 0xffff0000) | |
9256 | return false; | |
9257 | ||
dc810e39 | 9258 | bfd_put_32 (output_bfd, (bfd_vma) STUB_JALR, p); |
252b5132 | 9259 | p += 4; |
dc810e39 | 9260 | bfd_put_32 (output_bfd, (bfd_vma) STUB_LI16 (output_bfd) + h->dynindx, p); |
252b5132 RH |
9261 | |
9262 | BFD_ASSERT (h->plt.offset <= s->_raw_size); | |
9263 | memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); | |
9264 | ||
9265 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
9266 | only for the referenced symbol. */ | |
9267 | sym->st_shndx = SHN_UNDEF; | |
9268 | ||
9269 | /* The run-time linker uses the st_value field of the symbol | |
9270 | to reset the global offset table entry for this external | |
9271 | to its stub address when unlinking a shared object. */ | |
9272 | gval = s->output_section->vma + s->output_offset + h->plt.offset; | |
9273 | sym->st_value = gval; | |
9274 | } | |
9275 | ||
b305ef96 UC |
9276 | BFD_ASSERT (h->dynindx != -1 |
9277 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0); | |
252b5132 | 9278 | |
103186c6 | 9279 | sgot = mips_elf_got_section (dynobj); |
252b5132 RH |
9280 | BFD_ASSERT (sgot != NULL); |
9281 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
9282 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
9283 | BFD_ASSERT (g != NULL); | |
9284 | ||
7403cb63 MM |
9285 | /* Run through the global symbol table, creating GOT entries for all |
9286 | the symbols that need them. */ | |
8b237a89 MM |
9287 | if (g->global_gotsym != NULL |
9288 | && h->dynindx >= g->global_gotsym->dynindx) | |
252b5132 | 9289 | { |
7403cb63 MM |
9290 | bfd_vma offset; |
9291 | bfd_vma value; | |
252b5132 | 9292 | |
7403cb63 MM |
9293 | if (sym->st_value) |
9294 | value = sym->st_value; | |
9295 | else | |
be3ccd9c KH |
9296 | { |
9297 | /* For an entity defined in a shared object, this will be | |
9298 | NULL. (For functions in shared objects for | |
9299 | which we have created stubs, ST_VALUE will be non-NULL. | |
9300 | That's because such the functions are now no longer defined | |
9301 | in a shared object.) */ | |
9302 | ||
9303 | if (info->shared && h->root.type == bfd_link_hash_undefined) | |
9304 | value = 0; | |
9305 | else | |
9306 | value = h->root.u.def.value; | |
9307 | } | |
7403cb63 | 9308 | offset = mips_elf_global_got_index (dynobj, h); |
103186c6 | 9309 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
252b5132 RH |
9310 | } |
9311 | ||
c6142e5d | 9312 | /* Create a .msym entry, if appropriate. */ |
be3ccd9c | 9313 | smsym = bfd_get_section_by_name (dynobj, |
c6142e5d MM |
9314 | MIPS_ELF_MSYM_SECTION_NAME (dynobj)); |
9315 | if (smsym) | |
9316 | { | |
9317 | Elf32_Internal_Msym msym; | |
9318 | ||
9319 | msym.ms_hash_value = bfd_elf_hash (h->root.root.string); | |
9320 | /* It is undocumented what the `1' indicates, but IRIX6 uses | |
9321 | this value. */ | |
9322 | msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1); | |
be3ccd9c | 9323 | bfd_mips_elf_swap_msym_out |
c6142e5d MM |
9324 | (dynobj, &msym, |
9325 | ((Elf32_External_Msym *) smsym->contents) + h->dynindx); | |
9326 | } | |
9327 | ||
252b5132 RH |
9328 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
9329 | name = h->root.root.string; | |
9330 | if (strcmp (name, "_DYNAMIC") == 0 | |
9331 | || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) | |
9332 | sym->st_shndx = SHN_ABS; | |
f7cb7d68 | 9333 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 |
be3ccd9c | 9334 | || strcmp (name, "_DYNAMIC_LINKING") == 0) |
252b5132 RH |
9335 | { |
9336 | sym->st_shndx = SHN_ABS; | |
9337 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9338 | sym->st_value = 1; | |
9339 | } | |
f7cb7d68 UC |
9340 | else if (strcmp (name, "_gp_disp") == 0) |
9341 | { | |
9342 | sym->st_shndx = SHN_ABS; | |
9343 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9344 | sym->st_value = elf_gp (output_bfd); | |
9345 | } | |
252b5132 RH |
9346 | else if (SGI_COMPAT (output_bfd)) |
9347 | { | |
f7cb7d68 | 9348 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 |
be3ccd9c | 9349 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) |
252b5132 RH |
9350 | { |
9351 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9352 | sym->st_other = STO_PROTECTED; | |
9353 | sym->st_value = 0; | |
9354 | sym->st_shndx = SHN_MIPS_DATA; | |
9355 | } | |
9356 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
9357 | { | |
9358 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9359 | sym->st_other = STO_PROTECTED; | |
9360 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
9361 | sym->st_shndx = SHN_ABS; | |
9362 | } | |
9363 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
9364 | { | |
9365 | if (h->type == STT_FUNC) | |
9366 | sym->st_shndx = SHN_MIPS_TEXT; | |
9367 | else if (h->type == STT_OBJECT) | |
9368 | sym->st_shndx = SHN_MIPS_DATA; | |
9369 | } | |
9370 | } | |
9371 | ||
7403cb63 MM |
9372 | /* Handle the IRIX6-specific symbols. */ |
9373 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
9374 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
9375 | ||
f7cb7d68 | 9376 | if (! info->shared) |
252b5132 RH |
9377 | { |
9378 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
31a9bdd9 UC |
9379 | && (strcmp (name, "__rld_map") == 0 |
9380 | || strcmp (name, "__RLD_MAP") == 0)) | |
252b5132 RH |
9381 | { |
9382 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
9383 | BFD_ASSERT (s != NULL); | |
9384 | sym->st_value = s->output_section->vma + s->output_offset; | |
9385 | bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents); | |
9386 | if (mips_elf_hash_table (info)->rld_value == 0) | |
9387 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
9388 | } | |
9389 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
9390 | && strcmp (name, "__rld_obj_head") == 0) | |
9391 | { | |
303f629d | 9392 | /* IRIX6 does not use a .rld_map section. */ |
f7cb7d68 UC |
9393 | if (IRIX_COMPAT (output_bfd) == ict_irix5 |
9394 | || IRIX_COMPAT (output_bfd) == ict_none) | |
be3ccd9c | 9395 | BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map") |
303f629d | 9396 | != NULL); |
252b5132 RH |
9397 | mips_elf_hash_table (info)->rld_value = sym->st_value; |
9398 | } | |
9399 | } | |
9400 | ||
9401 | /* If this is a mips16 symbol, force the value to be even. */ | |
9402 | if (sym->st_other == STO_MIPS16 | |
9403 | && (sym->st_value & 1) != 0) | |
9404 | --sym->st_value; | |
9405 | ||
9406 | return true; | |
9407 | } | |
9408 | ||
9409 | /* Finish up the dynamic sections. */ | |
9410 | ||
103186c6 MM |
9411 | boolean |
9412 | _bfd_mips_elf_finish_dynamic_sections (output_bfd, info) | |
252b5132 RH |
9413 | bfd *output_bfd; |
9414 | struct bfd_link_info *info; | |
9415 | { | |
9416 | bfd *dynobj; | |
9417 | asection *sdyn; | |
9418 | asection *sgot; | |
9419 | struct mips_got_info *g; | |
9420 | ||
9421 | dynobj = elf_hash_table (info)->dynobj; | |
9422 | ||
9423 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
9424 | ||
103186c6 | 9425 | sgot = mips_elf_got_section (dynobj); |
252b5132 RH |
9426 | if (sgot == NULL) |
9427 | g = NULL; | |
9428 | else | |
9429 | { | |
9430 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
9431 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
9432 | BFD_ASSERT (g != NULL); | |
9433 | } | |
9434 | ||
9435 | if (elf_hash_table (info)->dynamic_sections_created) | |
9436 | { | |
103186c6 | 9437 | bfd_byte *b; |
252b5132 RH |
9438 | |
9439 | BFD_ASSERT (sdyn != NULL); | |
9440 | BFD_ASSERT (g != NULL); | |
9441 | ||
103186c6 MM |
9442 | for (b = sdyn->contents; |
9443 | b < sdyn->contents + sdyn->_raw_size; | |
9444 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
252b5132 RH |
9445 | { |
9446 | Elf_Internal_Dyn dyn; | |
9447 | const char *name; | |
9448 | size_t elemsize; | |
9449 | asection *s; | |
103186c6 | 9450 | boolean swap_out_p; |
252b5132 | 9451 | |
103186c6 MM |
9452 | /* Read in the current dynamic entry. */ |
9453 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
be3ccd9c | 9454 | |
103186c6 MM |
9455 | /* Assume that we're going to modify it and write it out. */ |
9456 | swap_out_p = true; | |
252b5132 RH |
9457 | |
9458 | switch (dyn.d_tag) | |
9459 | { | |
252b5132 | 9460 | case DT_RELENT: |
be3ccd9c | 9461 | s = (bfd_get_section_by_name |
103186c6 MM |
9462 | (dynobj, |
9463 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj))); | |
252b5132 | 9464 | BFD_ASSERT (s != NULL); |
103186c6 | 9465 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
252b5132 RH |
9466 | break; |
9467 | ||
9468 | case DT_STRSZ: | |
9469 | /* Rewrite DT_STRSZ. */ | |
9470 | dyn.d_un.d_val = | |
350836e3 | 9471 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); |
252b5132 RH |
9472 | break; |
9473 | ||
9474 | case DT_PLTGOT: | |
9475 | name = ".got"; | |
9476 | goto get_vma; | |
9477 | case DT_MIPS_CONFLICT: | |
9478 | name = ".conflict"; | |
9479 | goto get_vma; | |
9480 | case DT_MIPS_LIBLIST: | |
9481 | name = ".liblist"; | |
9482 | get_vma: | |
9483 | s = bfd_get_section_by_name (output_bfd, name); | |
9484 | BFD_ASSERT (s != NULL); | |
9485 | dyn.d_un.d_ptr = s->vma; | |
252b5132 RH |
9486 | break; |
9487 | ||
9488 | case DT_MIPS_RLD_VERSION: | |
9489 | dyn.d_un.d_val = 1; /* XXX */ | |
252b5132 RH |
9490 | break; |
9491 | ||
9492 | case DT_MIPS_FLAGS: | |
9493 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
252b5132 RH |
9494 | break; |
9495 | ||
9496 | case DT_MIPS_CONFLICTNO: | |
9497 | name = ".conflict"; | |
9498 | elemsize = sizeof (Elf32_Conflict); | |
9499 | goto set_elemno; | |
9500 | ||
9501 | case DT_MIPS_LIBLISTNO: | |
9502 | name = ".liblist"; | |
9503 | elemsize = sizeof (Elf32_Lib); | |
9504 | set_elemno: | |
9505 | s = bfd_get_section_by_name (output_bfd, name); | |
9506 | if (s != NULL) | |
9507 | { | |
9508 | if (s->_cooked_size != 0) | |
9509 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
9510 | else | |
9511 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
9512 | } | |
9513 | else | |
be3ccd9c | 9514 | dyn.d_un.d_val = 0; |
252b5132 RH |
9515 | break; |
9516 | ||
9517 | case DT_MIPS_TIME_STAMP: | |
9518 | time ((time_t *) &dyn.d_un.d_val); | |
252b5132 RH |
9519 | break; |
9520 | ||
9521 | case DT_MIPS_ICHECKSUM: | |
9522 | /* XXX FIXME: */ | |
103186c6 | 9523 | swap_out_p = false; |
252b5132 RH |
9524 | break; |
9525 | ||
9526 | case DT_MIPS_IVERSION: | |
9527 | /* XXX FIXME: */ | |
103186c6 | 9528 | swap_out_p = false; |
252b5132 RH |
9529 | break; |
9530 | ||
9531 | case DT_MIPS_BASE_ADDRESS: | |
9532 | s = output_bfd->sections; | |
9533 | BFD_ASSERT (s != NULL); | |
dc810e39 | 9534 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; |
252b5132 RH |
9535 | break; |
9536 | ||
9537 | case DT_MIPS_LOCAL_GOTNO: | |
9538 | dyn.d_un.d_val = g->local_gotno; | |
252b5132 RH |
9539 | break; |
9540 | ||
5499724a MM |
9541 | case DT_MIPS_UNREFEXTNO: |
9542 | /* The index into the dynamic symbol table which is the | |
9543 | entry of the first external symbol that is not | |
9544 | referenced within the same object. */ | |
9545 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
9546 | break; | |
9547 | ||
9548 | case DT_MIPS_GOTSYM: | |
9549 | if (g->global_gotsym) | |
9550 | { | |
9551 | dyn.d_un.d_val = g->global_gotsym->dynindx; | |
9552 | break; | |
9553 | } | |
9554 | /* In case if we don't have global got symbols we default | |
9555 | to setting DT_MIPS_GOTSYM to the same value as | |
9556 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
9557 | ||
252b5132 RH |
9558 | case DT_MIPS_SYMTABNO: |
9559 | name = ".dynsym"; | |
103186c6 | 9560 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); |
252b5132 RH |
9561 | s = bfd_get_section_by_name (output_bfd, name); |
9562 | BFD_ASSERT (s != NULL); | |
9563 | ||
9564 | if (s->_cooked_size != 0) | |
9565 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
9566 | else | |
9567 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
252b5132 RH |
9568 | break; |
9569 | ||
252b5132 RH |
9570 | case DT_MIPS_HIPAGENO: |
9571 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; | |
252b5132 RH |
9572 | break; |
9573 | ||
9574 | case DT_MIPS_RLD_MAP: | |
9575 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
252b5132 RH |
9576 | break; |
9577 | ||
7403cb63 | 9578 | case DT_MIPS_OPTIONS: |
be3ccd9c | 9579 | s = (bfd_get_section_by_name |
7403cb63 MM |
9580 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); |
9581 | dyn.d_un.d_ptr = s->vma; | |
7403cb63 MM |
9582 | break; |
9583 | ||
c6142e5d | 9584 | case DT_MIPS_MSYM: |
be3ccd9c | 9585 | s = (bfd_get_section_by_name |
c6142e5d MM |
9586 | (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))); |
9587 | dyn.d_un.d_ptr = s->vma; | |
103186c6 MM |
9588 | break; |
9589 | ||
9590 | default: | |
9591 | swap_out_p = false; | |
c6142e5d | 9592 | break; |
252b5132 | 9593 | } |
103186c6 MM |
9594 | |
9595 | if (swap_out_p) | |
be3ccd9c | 9596 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
103186c6 | 9597 | (dynobj, &dyn, b); |
252b5132 RH |
9598 | } |
9599 | } | |
9600 | ||
9601 | /* The first entry of the global offset table will be filled at | |
9602 | runtime. The second entry will be used by some runtime loaders. | |
be3ccd9c | 9603 | This isn't the case of Irix rld. */ |
252b5132 RH |
9604 | if (sgot != NULL && sgot->_raw_size > 0) |
9605 | { | |
103186c6 | 9606 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); |
be3ccd9c | 9607 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000, |
103186c6 | 9608 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
252b5132 RH |
9609 | } |
9610 | ||
9611 | if (sgot != NULL) | |
103186c6 MM |
9612 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
9613 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
252b5132 RH |
9614 | |
9615 | { | |
c6142e5d | 9616 | asection *smsym; |
252b5132 | 9617 | asection *s; |
252b5132 RH |
9618 | Elf32_compact_rel cpt; |
9619 | ||
30b30c21 RH |
9620 | /* ??? The section symbols for the output sections were set up in |
9621 | _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these | |
9622 | symbols. Should we do so? */ | |
252b5132 | 9623 | |
be3ccd9c | 9624 | smsym = bfd_get_section_by_name (dynobj, |
c6142e5d | 9625 | MIPS_ELF_MSYM_SECTION_NAME (dynobj)); |
30b30c21 | 9626 | if (smsym != NULL) |
252b5132 | 9627 | { |
103186c6 | 9628 | Elf32_Internal_Msym msym; |
c6142e5d | 9629 | |
103186c6 MM |
9630 | msym.ms_hash_value = 0; |
9631 | msym.ms_info = ELF32_MS_INFO (0, 1); | |
c6142e5d | 9632 | |
103186c6 MM |
9633 | for (s = output_bfd->sections; s != NULL; s = s->next) |
9634 | { | |
30b30c21 | 9635 | long dynindx = elf_section_data (s)->dynindx; |
252b5132 | 9636 | |
be3ccd9c | 9637 | bfd_mips_elf_swap_msym_out |
30b30c21 RH |
9638 | (output_bfd, &msym, |
9639 | (((Elf32_External_Msym *) smsym->contents) | |
9640 | + dynindx)); | |
9641 | } | |
252b5132 RH |
9642 | } |
9643 | ||
9644 | if (SGI_COMPAT (output_bfd)) | |
9645 | { | |
9646 | /* Write .compact_rel section out. */ | |
9647 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
9648 | if (s != NULL) | |
9649 | { | |
9650 | cpt.id1 = 1; | |
9651 | cpt.num = s->reloc_count; | |
9652 | cpt.id2 = 2; | |
9653 | cpt.offset = (s->output_section->filepos | |
9654 | + sizeof (Elf32_External_compact_rel)); | |
9655 | cpt.reserved0 = 0; | |
9656 | cpt.reserved1 = 0; | |
9657 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
9658 | ((Elf32_External_compact_rel *) | |
9659 | s->contents)); | |
9660 | ||
9661 | /* Clean up a dummy stub function entry in .text. */ | |
be3ccd9c | 9662 | s = bfd_get_section_by_name (dynobj, |
303f629d | 9663 | MIPS_ELF_STUB_SECTION_NAME (dynobj)); |
252b5132 RH |
9664 | if (s != NULL) |
9665 | { | |
9666 | file_ptr dummy_offset; | |
9667 | ||
9668 | BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE); | |
9669 | dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE; | |
9670 | memset (s->contents + dummy_offset, 0, | |
9671 | MIPS_FUNCTION_STUB_SIZE); | |
9672 | } | |
9673 | } | |
9674 | } | |
9675 | ||
adb76a3e UC |
9676 | /* We need to sort the entries of the dynamic relocation section. */ |
9677 | ||
9678 | if (!ABI_64_P (output_bfd)) | |
9679 | { | |
be3ccd9c KH |
9680 | asection *reldyn; |
9681 | ||
9682 | reldyn = bfd_get_section_by_name (dynobj, | |
9683 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)); | |
9684 | if (reldyn != NULL && reldyn->reloc_count > 2) | |
9685 | { | |
9686 | reldyn_sorting_bfd = output_bfd; | |
9687 | qsort ((Elf32_External_Rel *) reldyn->contents + 1, | |
9688 | (size_t) reldyn->reloc_count - 1, | |
9689 | sizeof (Elf32_External_Rel), sort_dynamic_relocs); | |
9690 | } | |
adb76a3e UC |
9691 | } |
9692 | ||
252b5132 | 9693 | /* Clean up a first relocation in .rel.dyn. */ |
be3ccd9c | 9694 | s = bfd_get_section_by_name (dynobj, |
103186c6 | 9695 | MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)); |
252b5132 | 9696 | if (s != NULL && s->_raw_size > 0) |
103186c6 | 9697 | memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj)); |
252b5132 RH |
9698 | } |
9699 | ||
9700 | return true; | |
9701 | } | |
9702 | \f | |
bb0082d6 AM |
9703 | /* Support for core dump NOTE sections */ |
9704 | static boolean | |
9705 | _bfd_elf32_mips_grok_prstatus (abfd, note) | |
9706 | bfd *abfd; | |
9707 | Elf_Internal_Note *note; | |
9708 | { | |
9709 | int offset; | |
dc810e39 | 9710 | unsigned int raw_size; |
bb0082d6 AM |
9711 | |
9712 | switch (note->descsz) | |
9713 | { | |
9714 | default: | |
9715 | return false; | |
9716 | ||
9717 | case 256: /* Linux/MIPS */ | |
9718 | /* pr_cursig */ | |
9719 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
9720 | ||
9721 | /* pr_pid */ | |
9722 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
9723 | ||
9724 | /* pr_reg */ | |
9725 | offset = 72; | |
9726 | raw_size = 180; | |
9727 | ||
9728 | break; | |
9729 | } | |
9730 | ||
9731 | /* Make a ".reg/999" section. */ | |
936e320b AM |
9732 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
9733 | raw_size, note->descpos + offset); | |
bb0082d6 AM |
9734 | } |
9735 | ||
9e80ff3a L |
9736 | static boolean |
9737 | _bfd_elf32_mips_grok_psinfo (abfd, note) | |
bb0082d6 AM |
9738 | bfd *abfd; |
9739 | Elf_Internal_Note *note; | |
9740 | { | |
9741 | switch (note->descsz) | |
9742 | { | |
9743 | default: | |
9744 | return false; | |
9745 | ||
9746 | case 128: /* Linux/MIPS elf_prpsinfo */ | |
9747 | elf_tdata (abfd)->core_program | |
9748 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
9749 | elf_tdata (abfd)->core_command | |
9750 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
9751 | } | |
9752 | ||
9753 | /* Note that for some reason, a spurious space is tacked | |
9754 | onto the end of the args in some (at least one anyway) | |
9755 | implementations, so strip it off if it exists. */ | |
9756 | ||
9757 | { | |
9758 | char *command = elf_tdata (abfd)->core_command; | |
9759 | int n = strlen (command); | |
9760 | ||
9761 | if (0 < n && command[n - 1] == ' ') | |
9762 | command[n - 1] = '\0'; | |
9763 | } | |
9764 | ||
9765 | return true; | |
9766 | } | |
9767 | \f | |
73d074b4 DJ |
9768 | #define PDR_SIZE 32 |
9769 | ||
9770 | static boolean | |
9771 | _bfd_elf32_mips_discard_info (abfd, cookie, info) | |
9772 | bfd *abfd; | |
9773 | struct elf_reloc_cookie *cookie; | |
9774 | struct bfd_link_info *info; | |
9775 | { | |
9776 | asection *o; | |
9777 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
9778 | boolean ret = false; | |
9779 | unsigned char *tdata; | |
9780 | size_t i, skip; | |
9781 | ||
9782 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
9783 | if (! o) | |
9784 | return false; | |
9785 | if (o->_raw_size == 0) | |
9786 | return false; | |
9787 | if (o->_raw_size % PDR_SIZE != 0) | |
9788 | return false; | |
9789 | if (o->output_section != NULL | |
9790 | && bfd_is_abs_section (o->output_section)) | |
9791 | return false; | |
9792 | ||
9793 | tdata = bfd_zmalloc (o->_raw_size / PDR_SIZE); | |
9794 | if (! tdata) | |
9795 | return false; | |
9796 | ||
9797 | cookie->rels = _bfd_elf32_link_read_relocs (abfd, o, (PTR) NULL, | |
9798 | (Elf_Internal_Rela *) NULL, | |
9799 | info->keep_memory); | |
9800 | if (!cookie->rels) | |
9801 | { | |
9802 | free (tdata); | |
9803 | return false; | |
9804 | } | |
9805 | ||
9806 | cookie->rel = cookie->rels; | |
9807 | cookie->relend = | |
9808 | cookie->rels + o->reloc_count * bed->s->int_rels_per_ext_rel; | |
175e9962 | 9809 | |
73d074b4 DJ |
9810 | for (i = 0, skip = 0; i < o->_raw_size; i ++) |
9811 | { | |
9812 | if (_bfd_elf32_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) | |
9813 | { | |
9814 | tdata[i] = 1; | |
9815 | skip ++; | |
9816 | } | |
9817 | } | |
9818 | ||
9819 | if (skip != 0) | |
9820 | { | |
9821 | elf_section_data (o)->tdata = tdata; | |
9822 | o->_cooked_size = o->_raw_size - skip * PDR_SIZE; | |
9823 | ret = true; | |
9824 | } | |
9825 | else | |
9826 | free (tdata); | |
9827 | ||
9828 | if (! info->keep_memory) | |
9829 | free (cookie->rels); | |
9830 | ||
9831 | return ret; | |
9832 | } | |
9833 | ||
9834 | static boolean | |
9835 | _bfd_elf32_mips_ignore_discarded_relocs (sec) | |
9836 | asection *sec; | |
9837 | { | |
9838 | if (strcmp (sec->name, ".pdr") == 0) | |
9839 | return true; | |
9840 | return false; | |
9841 | } | |
9842 | ||
9843 | static boolean | |
9844 | _bfd_elf32_mips_write_section (output_bfd, sec, contents) | |
9845 | bfd *output_bfd; | |
9846 | asection *sec; | |
9847 | bfd_byte *contents; | |
9848 | { | |
9849 | bfd_byte *to, *from, *end; | |
9850 | int i; | |
9851 | ||
9852 | if (strcmp (sec->name, ".pdr") != 0) | |
9853 | return false; | |
9854 | ||
9855 | if (elf_section_data (sec)->tdata == NULL) | |
9856 | return false; | |
9857 | ||
9858 | to = contents; | |
9859 | end = contents + sec->_raw_size; | |
9860 | for (from = contents, i = 0; | |
9861 | from < end; | |
9862 | from += PDR_SIZE, i++) | |
9863 | { | |
9864 | if (((unsigned char *)elf_section_data (sec)->tdata)[i] == 1) | |
9865 | continue; | |
9866 | if (to != from) | |
9867 | memcpy (to, from, PDR_SIZE); | |
9868 | to += PDR_SIZE; | |
9869 | } | |
9870 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
9871 | (file_ptr) sec->output_offset, | |
9872 | sec->_cooked_size); | |
9873 | return true; | |
9874 | } | |
9875 | \f | |
030d18fb CD |
9876 | /* Given a data section and an in-memory embedded reloc section, store |
9877 | relocation information into the embedded reloc section which can be | |
9878 | used at runtime to relocate the data section. This is called by the | |
9879 | linker when the --embedded-relocs switch is used. This is called | |
9880 | after the add_symbols entry point has been called for all the | |
9881 | objects, and before the final_link entry point is called. */ | |
9882 | ||
9883 | boolean | |
9884 | bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) | |
9885 | bfd *abfd; | |
9886 | struct bfd_link_info *info; | |
9887 | asection *datasec; | |
9888 | asection *relsec; | |
9889 | char **errmsg; | |
9890 | { | |
9891 | Elf_Internal_Shdr *symtab_hdr; | |
9892 | Elf_Internal_Shdr *shndx_hdr; | |
9893 | Elf32_External_Sym *extsyms; | |
9894 | Elf32_External_Sym *free_extsyms = NULL; | |
9895 | Elf_External_Sym_Shndx *shndx_buf = NULL; | |
9896 | Elf_Internal_Rela *internal_relocs; | |
9897 | Elf_Internal_Rela *free_relocs = NULL; | |
9898 | Elf_Internal_Rela *irel, *irelend; | |
9899 | bfd_byte *p; | |
9900 | bfd_size_type amt; | |
9901 | ||
9902 | BFD_ASSERT (! info->relocateable); | |
9903 | ||
9904 | *errmsg = NULL; | |
9905 | ||
9906 | if (datasec->reloc_count == 0) | |
9907 | return true; | |
9908 | ||
9909 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9910 | /* Read this BFD's symbols if we haven't done so already, or get the cached | |
9911 | copy if it exists. */ | |
9912 | if (symtab_hdr->contents != NULL) | |
9913 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
9914 | else | |
9915 | { | |
9916 | /* Go get them off disk. */ | |
9917 | if (info->keep_memory) | |
9918 | extsyms = ((Elf32_External_Sym *) | |
9919 | bfd_alloc (abfd, symtab_hdr->sh_size)); | |
9920 | else | |
9921 | extsyms = ((Elf32_External_Sym *) | |
9922 | bfd_malloc (symtab_hdr->sh_size)); | |
9923 | if (extsyms == NULL) | |
9924 | goto error_return; | |
9925 | if (! info->keep_memory) | |
9926 | free_extsyms = extsyms; | |
9927 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
9928 | || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd) | |
9929 | != symtab_hdr->sh_size)) | |
9930 | goto error_return; | |
9931 | if (info->keep_memory) | |
9932 | symtab_hdr->contents = (unsigned char *) extsyms; | |
9933 | } | |
9934 | ||
9935 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
9936 | if (shndx_hdr->sh_size != 0) | |
9937 | { | |
9938 | amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx); | |
9939 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); | |
9940 | if (shndx_buf == NULL) | |
9941 | goto error_return; | |
9942 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
9943 | || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) | |
9944 | goto error_return; | |
9945 | } | |
9946 | ||
9947 | /* Get a copy of the native relocations. */ | |
9948 | internal_relocs = (_bfd_elf32_link_read_relocs | |
9949 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
9950 | info->keep_memory)); | |
9951 | if (internal_relocs == NULL) | |
9952 | goto error_return; | |
9953 | if (! info->keep_memory) | |
9954 | free_relocs = internal_relocs; | |
9955 | ||
9956 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12); | |
9957 | if (relsec->contents == NULL) | |
9958 | goto error_return; | |
9959 | ||
9960 | p = relsec->contents; | |
9961 | ||
9962 | irelend = internal_relocs + datasec->reloc_count; | |
9963 | ||
9964 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
9965 | { | |
9966 | asection *targetsec; | |
9967 | ||
9968 | /* We are going to write a four byte longword into the runtime | |
9969 | reloc section. The longword will be the address in the data | |
9970 | section which must be relocated. It is followed by the name | |
9971 | of the target section NUL-padded or truncated to 8 | |
9972 | characters. */ | |
9973 | ||
9974 | /* We can only relocate absolute longword relocs at run time. */ | |
9975 | if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) && | |
9976 | (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64)) | |
9977 | { | |
9978 | *errmsg = _("unsupported reloc type"); | |
9979 | bfd_set_error (bfd_error_bad_value); | |
9980 | goto error_return; | |
9981 | } | |
9982 | /* Get the target section referred to by the reloc. */ | |
9983 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
9984 | { | |
9985 | Elf32_External_Sym *esym; | |
9986 | Elf_External_Sym_Shndx *shndx; | |
9987 | Elf_Internal_Sym isym; | |
9988 | ||
9989 | /* A local symbol. */ | |
9990 | esym = extsyms + ELF32_R_SYM (irel->r_info); | |
9991 | shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0); | |
9992 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym); | |
9993 | ||
9994 | targetsec = bfd_section_from_elf_index (abfd, isym.st_shndx); | |
9995 | } | |
9996 | else | |
9997 | { | |
9998 | unsigned long indx; | |
9999 | struct elf_link_hash_entry *h; | |
10000 | ||
10001 | /* An external symbol. */ | |
10002 | indx = ELF32_R_SYM (irel->r_info); | |
10003 | h = elf_sym_hashes (abfd)[indx]; | |
10004 | targetsec = NULL; | |
10005 | /* | |
10006 | * For some reason, in certain programs, the symbol will | |
10007 | * not be in the hash table. It seems to happen when you | |
10008 | * declare a static table of pointers to const external structures. | |
10009 | * In this case, the relocs are relative to data, not | |
10010 | * text, so just treating it like an undefined link | |
10011 | * should be sufficient. | |
10012 | */ | |
10013 | BFD_ASSERT(h != NULL); | |
10014 | if (h->root.type == bfd_link_hash_defined | |
10015 | || h->root.type == bfd_link_hash_defweak) | |
10016 | targetsec = h->root.u.def.section; | |
10017 | } | |
10018 | ||
10019 | ||
10020 | /* | |
10021 | * Set the low bit of the relocation offset if it's a MIPS64 reloc. | |
10022 | * Relocations will always be on (at least) 32-bit boundaries. | |
10023 | */ | |
10024 | ||
10025 | bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) + | |
10026 | ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)), | |
10027 | p); | |
10028 | memset (p + 4, 0, 8); | |
10029 | if (targetsec != NULL) | |
10030 | strncpy (p + 4, targetsec->output_section->name, 8); | |
10031 | } | |
10032 | ||
10033 | if (shndx_buf != NULL) | |
10034 | free (shndx_buf); | |
10035 | if (free_extsyms != NULL) | |
10036 | free (free_extsyms); | |
10037 | if (free_relocs != NULL) | |
10038 | free (free_relocs); | |
10039 | return true; | |
10040 | ||
10041 | error_return: | |
10042 | if (shndx_buf != NULL) | |
10043 | free (shndx_buf); | |
10044 | if (free_extsyms != NULL) | |
10045 | free (free_extsyms); | |
10046 | if (free_relocs != NULL) | |
10047 | free (free_relocs); | |
10048 | return false; | |
10049 | } | |
10050 | \f | |
252b5132 RH |
10051 | /* This is almost identical to bfd_generic_get_... except that some |
10052 | MIPS relocations need to be handled specially. Sigh. */ | |
10053 | ||
10054 | static bfd_byte * | |
10055 | elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data, | |
10056 | relocateable, symbols) | |
10057 | bfd *abfd; | |
10058 | struct bfd_link_info *link_info; | |
10059 | struct bfd_link_order *link_order; | |
10060 | bfd_byte *data; | |
10061 | boolean relocateable; | |
10062 | asymbol **symbols; | |
10063 | { | |
10064 | /* Get enough memory to hold the stuff */ | |
10065 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
10066 | asection *input_section = link_order->u.indirect.section; | |
10067 | ||
10068 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
10069 | arelent **reloc_vector = NULL; | |
10070 | long reloc_count; | |
10071 | ||
10072 | if (reloc_size < 0) | |
10073 | goto error_return; | |
10074 | ||
dc810e39 | 10075 | reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size); |
252b5132 RH |
10076 | if (reloc_vector == NULL && reloc_size != 0) |
10077 | goto error_return; | |
10078 | ||
10079 | /* read in the section */ | |
10080 | if (!bfd_get_section_contents (input_bfd, | |
10081 | input_section, | |
10082 | (PTR) data, | |
dc810e39 | 10083 | (file_ptr) 0, |
252b5132 RH |
10084 | input_section->_raw_size)) |
10085 | goto error_return; | |
10086 | ||
10087 | /* We're not relaxing the section, so just copy the size info */ | |
10088 | input_section->_cooked_size = input_section->_raw_size; | |
10089 | input_section->reloc_done = true; | |
10090 | ||
10091 | reloc_count = bfd_canonicalize_reloc (input_bfd, | |
10092 | input_section, | |
10093 | reloc_vector, | |
10094 | symbols); | |
10095 | if (reloc_count < 0) | |
10096 | goto error_return; | |
10097 | ||
10098 | if (reloc_count > 0) | |
10099 | { | |
10100 | arelent **parent; | |
10101 | /* for mips */ | |
10102 | int gp_found; | |
10103 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
10104 | ||
10105 | { | |
10106 | struct bfd_hash_entry *h; | |
10107 | struct bfd_link_hash_entry *lh; | |
10108 | /* Skip all this stuff if we aren't mixing formats. */ | |
10109 | if (abfd && input_bfd | |
10110 | && abfd->xvec == input_bfd->xvec) | |
10111 | lh = 0; | |
10112 | else | |
10113 | { | |
10114 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); | |
10115 | lh = (struct bfd_link_hash_entry *) h; | |
10116 | } | |
10117 | lookup: | |
10118 | if (lh) | |
10119 | { | |
10120 | switch (lh->type) | |
10121 | { | |
10122 | case bfd_link_hash_undefined: | |
10123 | case bfd_link_hash_undefweak: | |
10124 | case bfd_link_hash_common: | |
10125 | gp_found = 0; | |
10126 | break; | |
10127 | case bfd_link_hash_defined: | |
10128 | case bfd_link_hash_defweak: | |
10129 | gp_found = 1; | |
10130 | gp = lh->u.def.value; | |
10131 | break; | |
10132 | case bfd_link_hash_indirect: | |
10133 | case bfd_link_hash_warning: | |
10134 | lh = lh->u.i.link; | |
10135 | /* @@FIXME ignoring warning for now */ | |
10136 | goto lookup; | |
10137 | case bfd_link_hash_new: | |
10138 | default: | |
10139 | abort (); | |
10140 | } | |
10141 | } | |
10142 | else | |
10143 | gp_found = 0; | |
10144 | } | |
10145 | /* end mips */ | |
10146 | for (parent = reloc_vector; *parent != (arelent *) NULL; | |
10147 | parent++) | |
10148 | { | |
10149 | char *error_message = (char *) NULL; | |
10150 | bfd_reloc_status_type r; | |
10151 | ||
10152 | /* Specific to MIPS: Deal with relocation types that require | |
10153 | knowing the gp of the output bfd. */ | |
10154 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
10155 | if (bfd_is_abs_section (sym->section) && abfd) | |
10156 | { | |
10157 | /* The special_function wouldn't get called anyways. */ | |
10158 | } | |
10159 | else if (!gp_found) | |
10160 | { | |
10161 | /* The gp isn't there; let the special function code | |
10162 | fall over on its own. */ | |
10163 | } | |
10164 | else if ((*parent)->howto->special_function | |
10165 | == _bfd_mips_elf_gprel16_reloc) | |
10166 | { | |
10167 | /* bypass special_function call */ | |
10168 | r = gprel16_with_gp (input_bfd, sym, *parent, input_section, | |
10169 | relocateable, (PTR) data, gp); | |
10170 | goto skip_bfd_perform_relocation; | |
10171 | } | |
10172 | /* end mips specific stuff */ | |
10173 | ||
10174 | r = bfd_perform_relocation (input_bfd, | |
10175 | *parent, | |
10176 | (PTR) data, | |
10177 | input_section, | |
10178 | relocateable ? abfd : (bfd *) NULL, | |
10179 | &error_message); | |
10180 | skip_bfd_perform_relocation: | |
10181 | ||
10182 | if (relocateable) | |
10183 | { | |
10184 | asection *os = input_section->output_section; | |
10185 | ||
10186 | /* A partial link, so keep the relocs */ | |
10187 | os->orelocation[os->reloc_count] = *parent; | |
10188 | os->reloc_count++; | |
10189 | } | |
10190 | ||
10191 | if (r != bfd_reloc_ok) | |
10192 | { | |
10193 | switch (r) | |
10194 | { | |
10195 | case bfd_reloc_undefined: | |
10196 | if (!((*link_info->callbacks->undefined_symbol) | |
10197 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5cc7c785 L |
10198 | input_bfd, input_section, (*parent)->address, |
10199 | true))) | |
252b5132 RH |
10200 | goto error_return; |
10201 | break; | |
10202 | case bfd_reloc_dangerous: | |
10203 | BFD_ASSERT (error_message != (char *) NULL); | |
10204 | if (!((*link_info->callbacks->reloc_dangerous) | |
10205 | (link_info, error_message, input_bfd, input_section, | |
10206 | (*parent)->address))) | |
10207 | goto error_return; | |
10208 | break; | |
10209 | case bfd_reloc_overflow: | |
10210 | if (!((*link_info->callbacks->reloc_overflow) | |
10211 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
10212 | (*parent)->howto->name, (*parent)->addend, | |
10213 | input_bfd, input_section, (*parent)->address))) | |
10214 | goto error_return; | |
10215 | break; | |
10216 | case bfd_reloc_outofrange: | |
10217 | default: | |
10218 | abort (); | |
10219 | break; | |
10220 | } | |
10221 | ||
10222 | } | |
10223 | } | |
10224 | } | |
10225 | if (reloc_vector != NULL) | |
10226 | free (reloc_vector); | |
10227 | return data; | |
10228 | ||
10229 | error_return: | |
10230 | if (reloc_vector != NULL) | |
10231 | free (reloc_vector); | |
10232 | return NULL; | |
10233 | } | |
be3ccd9c | 10234 | |
252b5132 RH |
10235 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
10236 | elf32_mips_get_relocated_section_contents | |
10237 | \f | |
10238 | /* ECOFF swapping routines. These are used when dealing with the | |
10239 | .mdebug section, which is in the ECOFF debugging format. */ | |
be3ccd9c | 10240 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { |
252b5132 RH |
10241 | /* Symbol table magic number. */ |
10242 | magicSym, | |
10243 | /* Alignment of debugging information. E.g., 4. */ | |
10244 | 4, | |
10245 | /* Sizes of external symbolic information. */ | |
10246 | sizeof (struct hdr_ext), | |
10247 | sizeof (struct dnr_ext), | |
10248 | sizeof (struct pdr_ext), | |
10249 | sizeof (struct sym_ext), | |
10250 | sizeof (struct opt_ext), | |
10251 | sizeof (struct fdr_ext), | |
10252 | sizeof (struct rfd_ext), | |
10253 | sizeof (struct ext_ext), | |
10254 | /* Functions to swap in external symbolic data. */ | |
10255 | ecoff_swap_hdr_in, | |
10256 | ecoff_swap_dnr_in, | |
10257 | ecoff_swap_pdr_in, | |
10258 | ecoff_swap_sym_in, | |
10259 | ecoff_swap_opt_in, | |
10260 | ecoff_swap_fdr_in, | |
10261 | ecoff_swap_rfd_in, | |
10262 | ecoff_swap_ext_in, | |
10263 | _bfd_ecoff_swap_tir_in, | |
10264 | _bfd_ecoff_swap_rndx_in, | |
10265 | /* Functions to swap out external symbolic data. */ | |
10266 | ecoff_swap_hdr_out, | |
10267 | ecoff_swap_dnr_out, | |
10268 | ecoff_swap_pdr_out, | |
10269 | ecoff_swap_sym_out, | |
10270 | ecoff_swap_opt_out, | |
10271 | ecoff_swap_fdr_out, | |
10272 | ecoff_swap_rfd_out, | |
10273 | ecoff_swap_ext_out, | |
10274 | _bfd_ecoff_swap_tir_out, | |
10275 | _bfd_ecoff_swap_rndx_out, | |
10276 | /* Function to read in symbolic data. */ | |
10277 | _bfd_mips_elf_read_ecoff_info | |
10278 | }; | |
10279 | \f | |
252b5132 RH |
10280 | #define ELF_ARCH bfd_arch_mips |
10281 | #define ELF_MACHINE_CODE EM_MIPS | |
10282 | ||
10283 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
10284 | a value of 0x1000, and we are compatible. */ | |
10285 | #define ELF_MAXPAGESIZE 0x1000 | |
10286 | ||
10287 | #define elf_backend_collect true | |
10288 | #define elf_backend_type_change_ok true | |
10289 | #define elf_backend_can_gc_sections true | |
3f830999 | 10290 | #define elf_info_to_howto mips_info_to_howto_rela |
252b5132 RH |
10291 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
10292 | #define elf_backend_sym_is_global mips_elf_sym_is_global | |
103186c6 | 10293 | #define elf_backend_object_p _bfd_mips_elf_object_p |
d75bc93d TS |
10294 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
10295 | #define elf_backend_section_processing _bfd_mips_elf_section_processing | |
103186c6 | 10296 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
252b5132 RH |
10297 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
10298 | #define elf_backend_section_from_bfd_section \ | |
10299 | _bfd_mips_elf_section_from_bfd_section | |
103186c6 | 10300 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
d75bc93d TS |
10301 | #define elf_backend_link_output_symbol_hook \ |
10302 | _bfd_mips_elf_link_output_symbol_hook | |
103186c6 MM |
10303 | #define elf_backend_create_dynamic_sections \ |
10304 | _bfd_mips_elf_create_dynamic_sections | |
10305 | #define elf_backend_check_relocs _bfd_mips_elf_check_relocs | |
10306 | #define elf_backend_adjust_dynamic_symbol \ | |
10307 | _bfd_mips_elf_adjust_dynamic_symbol | |
10308 | #define elf_backend_always_size_sections \ | |
10309 | _bfd_mips_elf_always_size_sections | |
10310 | #define elf_backend_size_dynamic_sections \ | |
10311 | _bfd_mips_elf_size_dynamic_sections | |
10312 | #define elf_backend_relocate_section _bfd_mips_elf_relocate_section | |
103186c6 MM |
10313 | #define elf_backend_finish_dynamic_symbol \ |
10314 | _bfd_mips_elf_finish_dynamic_symbol | |
10315 | #define elf_backend_finish_dynamic_sections \ | |
10316 | _bfd_mips_elf_finish_dynamic_sections | |
d75bc93d TS |
10317 | #define elf_backend_final_write_processing \ |
10318 | _bfd_mips_elf_final_write_processing | |
10319 | #define elf_backend_additional_program_headers \ | |
10320 | _bfd_mips_elf_additional_program_headers | |
10321 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map | |
103186c6 MM |
10322 | #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook |
10323 | #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook | |
8a20f077 UC |
10324 | #define elf_backend_copy_indirect_symbol \ |
10325 | _bfd_mips_elf_copy_indirect_symbol | |
b305ef96 | 10326 | #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol |
bb0082d6 AM |
10327 | #define elf_backend_grok_prstatus _bfd_elf32_mips_grok_prstatus |
10328 | #define elf_backend_grok_psinfo _bfd_elf32_mips_grok_psinfo | |
d75bc93d TS |
10329 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap |
10330 | ||
10331 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) | |
10332 | #define elf_backend_plt_header_size 0 | |
10333 | #define elf_backend_may_use_rel_p 1 | |
10334 | #define elf_backend_may_use_rela_p 0 | |
10335 | #define elf_backend_default_use_rela_p 0 | |
10336 | #define elf_backend_sign_extend_vma true | |
b305ef96 | 10337 | |
73d074b4 DJ |
10338 | #define elf_backend_discard_info _bfd_elf32_mips_discard_info |
10339 | #define elf_backend_ignore_discarded_relocs \ | |
10340 | _bfd_elf32_mips_ignore_discarded_relocs | |
10341 | #define elf_backend_write_section _bfd_elf32_mips_write_section | |
10342 | ||
252b5132 RH |
10343 | #define bfd_elf32_bfd_is_local_label_name \ |
10344 | mips_elf_is_local_label_name | |
10345 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line | |
10346 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents | |
10347 | #define bfd_elf32_bfd_link_hash_table_create \ | |
103186c6 MM |
10348 | _bfd_mips_elf_link_hash_table_create |
10349 | #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link | |
252b5132 RH |
10350 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
10351 | _bfd_mips_elf_merge_private_bfd_data | |
10352 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
10353 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
10354 | _bfd_mips_elf_print_private_bfd_data | |
e364195d | 10355 | |
d75bc93d TS |
10356 | /* Support for SGI-ish mips targets. */ |
10357 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec | |
10358 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
10359 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
10360 | #define TARGET_BIG_NAME "elf32-bigmips" | |
10361 | ||
10362 | #include "elf32-target.h" | |
e364195d | 10363 | |
d75bc93d TS |
10364 | /* Support for traditional mips targets. */ |
10365 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ | |
e364195d UC |
10366 | |
10367 | #undef TARGET_LITTLE_SYM | |
10368 | #undef TARGET_LITTLE_NAME | |
10369 | #undef TARGET_BIG_SYM | |
10370 | #undef TARGET_BIG_NAME | |
10371 | ||
10372 | #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec | |
10373 | #define TARGET_LITTLE_NAME "elf32-tradlittlemips" | |
10374 | #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec | |
10375 | #define TARGET_BIG_NAME "elf32-tradbigmips" | |
10376 | ||
10377 | /* Include the target file again for this target */ | |
10378 | #include "elf32-target.h" |