Commit | Line | Data |
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32090b8e | 1 | /* SPARC-specific support for 32-bit ELF |
f786a73f | 2 | Copyright 1993, 1994, 1995 Free Software Foundation, Inc. |
32090b8e KR |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | #include "bfd.h" | |
21 | #include "sysdep.h" | |
013dec1a | 22 | #include "bfdlink.h" |
32090b8e KR |
23 | #include "libbfd.h" |
24 | #include "libelf.h" | |
25 | ||
f786a73f | 26 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup |
013dec1a ILT |
27 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
28 | static void elf_info_to_howto | |
29 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
30 | static boolean elf32_sparc_create_dynamic_sections | |
31 | PARAMS ((bfd *, struct bfd_link_info *)); | |
12662be4 ILT |
32 | static boolean elf32_sparc_create_got_section |
33 | PARAMS ((bfd *, struct bfd_link_info *)); | |
4fbc96ad KR |
34 | static boolean elf32_sparc_check_relocs |
35 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
36 | const Elf_Internal_Rela *)); | |
013dec1a ILT |
37 | static boolean elf32_sparc_adjust_dynamic_symbol |
38 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
14cac507 ILT |
39 | static boolean elf32_sparc_adjust_dynindx |
40 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
013dec1a ILT |
41 | static boolean elf32_sparc_size_dynamic_sections |
42 | PARAMS ((bfd *, struct bfd_link_info *)); | |
43 | static boolean elf32_sparc_relocate_section | |
44 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
12662be4 | 45 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
013dec1a ILT |
46 | static boolean elf32_sparc_finish_dynamic_symbol |
47 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
48 | Elf_Internal_Sym *)); | |
49 | static boolean elf32_sparc_finish_dynamic_sections | |
50 | PARAMS ((bfd *, struct bfd_link_info *)); | |
51 | ||
32090b8e KR |
52 | enum reloc_type |
53 | { | |
54 | R_SPARC_NONE = 0, | |
55 | R_SPARC_8, R_SPARC_16, R_SPARC_32, | |
56 | R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32, | |
57 | R_SPARC_WDISP30, R_SPARC_WDISP22, | |
58 | R_SPARC_HI22, R_SPARC_22, | |
59 | R_SPARC_13, R_SPARC_LO10, | |
60 | R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22, | |
61 | R_SPARC_PC10, R_SPARC_PC22, | |
62 | R_SPARC_WPLT30, | |
63 | R_SPARC_COPY, | |
64 | R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT, | |
65 | R_SPARC_RELATIVE, | |
66 | R_SPARC_UA32, | |
67 | R_SPARC_max | |
68 | }; | |
69 | ||
70 | #if 0 | |
71 | static CONST char *CONST reloc_type_names[] = | |
72 | { | |
73 | "R_SPARC_NONE", | |
74 | "R_SPARC_8", "R_SPARC_16", "R_SPARC_32", | |
75 | "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32", | |
76 | "R_SPARC_WDISP30", "R_SPARC_WDISP22", | |
77 | "R_SPARC_HI22", "R_SPARC_22", | |
78 | "R_SPARC_13", "R_SPARC_LO10", | |
79 | "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22", | |
80 | "R_SPARC_PC10", "R_SPARC_PC22", | |
81 | "R_SPARC_WPLT30", | |
82 | "R_SPARC_COPY", | |
83 | "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT", | |
84 | "R_SPARC_RELATIVE", | |
85 | "R_SPARC_UA32", | |
86 | }; | |
87 | #endif | |
88 | ||
89 | static reloc_howto_type elf_sparc_howto_table[] = | |
90 | { | |
013dec1a ILT |
91 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_NONE", false,0,0x00000000,true), |
92 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_8", false,0,0x000000ff,true), | |
93 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_16", false,0,0x0000ffff,true), | |
94 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_32", false,0,0xffffffff,true), | |
95 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP8", false,0,0x000000ff,true), | |
96 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP16", false,0,0x0000ffff,true), | |
97 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP32", false,0,0x00ffffff,true), | |
98 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WDISP30", false,0,0x3fffffff,true), | |
99 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WDISP22", false,0,0x003fffff,true), | |
100 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_HI22", false,0,0x003fffff,true), | |
101 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_22", false,0,0x003fffff,true), | |
102 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_13", false,0,0x00001fff,true), | |
103 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_LO10", false,0,0x000003ff,true), | |
4fbc96ad | 104 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GOT10", false,0,0x000003ff,true), |
013dec1a | 105 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_GOT13", false,0,0x00001fff,true), |
4fbc96ad KR |
106 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GOT22", false,0,0x003fffff,true), |
107 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_PC10", false,0,0x000003ff,true), | |
12662be4 ILT |
108 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_PC22", false,0,0x003fffff,true), |
109 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WPLT30", false,0,0x3fffffff,true), | |
013dec1a ILT |
110 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_COPY", false,0,0x00000000,true), |
111 | HOWTO(R_SPARC_GLOB_DAT,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GLOB_DAT",false,0,0x00000000,true), | |
112 | HOWTO(R_SPARC_JMP_SLOT,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_JMP_SLOT",false,0,0x00000000,true), | |
113 | HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_RELATIVE",false,0,0x00000000,true), | |
114 | HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_UA32", false,0,0x00000000,true), | |
32090b8e KR |
115 | }; |
116 | ||
117 | struct elf_reloc_map { | |
118 | unsigned char bfd_reloc_val; | |
119 | unsigned char elf_reloc_val; | |
120 | }; | |
121 | ||
122 | static CONST struct elf_reloc_map sparc_reloc_map[] = | |
123 | { | |
124 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
125 | { BFD_RELOC_16, R_SPARC_16, }, | |
126 | { BFD_RELOC_8, R_SPARC_8 }, | |
127 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
128 | { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */ | |
129 | { BFD_RELOC_32, R_SPARC_32 }, | |
130 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
131 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
132 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
133 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
134 | { BFD_RELOC_SPARC22, R_SPARC_22 }, | |
135 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
136 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
137 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
138 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
139 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
140 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
141 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
142 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
143 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
144 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
145 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
146 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
4fbc96ad | 147 | /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ |
32090b8e KR |
148 | }; |
149 | ||
f786a73f | 150 | static reloc_howto_type * |
013dec1a ILT |
151 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) |
152 | bfd *abfd; | |
153 | bfd_reloc_code_real_type code; | |
32090b8e KR |
154 | { |
155 | int i; | |
156 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
157 | { | |
158 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
159 | return &elf_sparc_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
160 | } | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static void | |
013dec1a ILT |
165 | elf_info_to_howto (abfd, cache_ptr, dst) |
166 | bfd *abfd; | |
167 | arelent *cache_ptr; | |
168 | Elf_Internal_Rela *dst; | |
32090b8e KR |
169 | { |
170 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max); | |
171 | cache_ptr->howto = &elf_sparc_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
172 | } | |
173 | ||
013dec1a ILT |
174 | \f |
175 | /* Functions for the SPARC ELF linker. */ | |
176 | ||
177 | /* The name of the dynamic interpreter. This is put in the .interp | |
178 | section. */ | |
179 | ||
180 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
181 | ||
182 | /* The nop opcode we use. */ | |
183 | ||
184 | #define SPARC_NOP 0x01000000 | |
185 | ||
186 | /* The size in bytes of an entry in the procedure linkage table. */ | |
187 | ||
188 | #define PLT_ENTRY_SIZE 12 | |
189 | ||
190 | /* The first four entries in a procedure linkage table are reserved, | |
191 | and the initial contents are unimportant (we zero them out). | |
192 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
193 | supplement to see how this works. */ | |
194 | ||
195 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
196 | #define PLT_ENTRY_WORD0 0x03000000 | |
197 | /* b,a .plt0. We fill in the offset later. */ | |
198 | #define PLT_ENTRY_WORD1 0x30800000 | |
199 | /* nop. */ | |
200 | #define PLT_ENTRY_WORD2 SPARC_NOP | |
201 | ||
202 | /* Create dynamic sections when linking against a dynamic object. */ | |
203 | ||
204 | static boolean | |
205 | elf32_sparc_create_dynamic_sections (abfd, info) | |
206 | bfd *abfd; | |
207 | struct bfd_link_info *info; | |
208 | { | |
209 | flagword flags; | |
210 | register asection *s; | |
211 | struct elf_link_hash_entry *h; | |
212 | ||
213 | /* We need to create .plt, .rela.plt, .got, .dynbss, and .rela.bss | |
214 | sections. */ | |
215 | ||
216 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
217 | ||
218 | s = bfd_make_section (abfd, ".plt"); | |
219 | if (s == NULL | |
220 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) | |
221 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
222 | return false; | |
223 | ||
224 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
225 | .plt section. */ | |
226 | h = NULL; | |
227 | if (! (_bfd_generic_link_add_one_symbol | |
228 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, (bfd_vma) 0, | |
229 | (const char *) NULL, false, get_elf_backend_data (abfd)->collect, | |
230 | (struct bfd_link_hash_entry **) &h))) | |
231 | return false; | |
232 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
4fbc96ad KR |
233 | h->type = STT_OBJECT; |
234 | ||
235 | if (info->shared | |
236 | && ! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
237 | return false; | |
013dec1a | 238 | |
013dec1a ILT |
239 | s = bfd_make_section (abfd, ".rela.plt"); |
240 | if (s == NULL | |
241 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
242 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
243 | return false; | |
244 | ||
12662be4 ILT |
245 | if (! elf32_sparc_create_got_section (abfd, info)) |
246 | return false; | |
247 | ||
248 | /* The .dynbss section is a place to put symbols which are defined | |
249 | by dynamic objects, are referenced by regular objects, and are | |
250 | not functions. We must allocate space for them in the process | |
251 | image and use a R_SPARC_COPY reloc to tell the dynamic linker to | |
252 | initialize them at run time. The linker script puts the .dynbss | |
253 | section into the .bss section of the final image. */ | |
254 | s = bfd_make_section (abfd, ".dynbss"); | |
255 | if (s == NULL | |
256 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
257 | return false; | |
258 | ||
259 | /* The .rela.bss section holds copy relocs. */ | |
260 | if (! info->shared) | |
261 | { | |
262 | s = bfd_make_section (abfd, ".rela.bss"); | |
263 | if (s == NULL | |
264 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
265 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
266 | return false; | |
267 | } | |
268 | ||
269 | return true; | |
270 | } | |
271 | ||
272 | /* Create the .got section to hold the global offset table. */ | |
273 | ||
274 | static boolean | |
275 | elf32_sparc_create_got_section (abfd, info) | |
276 | bfd *abfd; | |
277 | struct bfd_link_info *info; | |
278 | { | |
279 | register asection *s; | |
280 | struct elf_link_hash_entry *h; | |
281 | ||
282 | /* This function may be called more than once. */ | |
283 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
284 | return true; | |
285 | ||
013dec1a ILT |
286 | s = bfd_make_section (abfd, ".got"); |
287 | if (s == NULL | |
12662be4 ILT |
288 | || ! bfd_set_section_flags (abfd, s, |
289 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
290 | | SEC_IN_MEMORY)) | |
013dec1a ILT |
291 | || ! bfd_set_section_alignment (abfd, s, 2)) |
292 | return false; | |
293 | ||
294 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
295 | section. We don't do this in the linker script because we don't | |
296 | want to define the symbol if we are not creating a global offset | |
297 | table. FIXME: The Solaris linker puts _GLOBAL_OFFSET_TABLE_ at | |
298 | the start of the .got section, but when using the small PIC model | |
299 | the .got is accessed using a signed 13 bit offset. Shouldn't | |
300 | _GLOBAL_OFFSET_TABLE_ be located at .got + 4096? */ | |
301 | h = NULL; | |
302 | if (! (_bfd_generic_link_add_one_symbol | |
303 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, (bfd_vma) 0, | |
304 | (const char *) NULL, false, get_elf_backend_data (abfd)->collect, | |
305 | (struct bfd_link_hash_entry **) &h))) | |
306 | return false; | |
307 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
4fbc96ad KR |
308 | h->type = STT_OBJECT; |
309 | ||
310 | if (info->shared | |
311 | && ! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
312 | return false; | |
013dec1a ILT |
313 | |
314 | /* The first global offset table entry is reserved. */ | |
315 | s->_raw_size += 4; | |
316 | ||
4fbc96ad | 317 | return true; |
12662be4 | 318 | } |
4fbc96ad KR |
319 | |
320 | /* Look through the relocs for a section during the first phase, and | |
321 | allocate space in the global offset table or procedure linkage | |
322 | table. */ | |
323 | ||
324 | static boolean | |
325 | elf32_sparc_check_relocs (abfd, info, sec, relocs) | |
326 | bfd *abfd; | |
327 | struct bfd_link_info *info; | |
328 | asection *sec; | |
329 | const Elf_Internal_Rela *relocs; | |
330 | { | |
331 | bfd *dynobj; | |
332 | Elf_Internal_Shdr *symtab_hdr; | |
333 | struct elf_link_hash_entry **sym_hashes; | |
334 | bfd_vma *local_got_offsets; | |
335 | const Elf_Internal_Rela *rel; | |
336 | const Elf_Internal_Rela *rel_end; | |
337 | asection *sgot; | |
338 | asection *srelgot; | |
4fbc96ad KR |
339 | asection *sreloc; |
340 | ||
341 | if (info->relocateable) | |
342 | return true; | |
343 | ||
344 | dynobj = elf_hash_table (info)->dynobj; | |
345 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
346 | sym_hashes = elf_sym_hashes (abfd); | |
347 | local_got_offsets = elf_local_got_offsets (abfd); | |
348 | ||
349 | sgot = NULL; | |
350 | srelgot = NULL; | |
4fbc96ad KR |
351 | sreloc = NULL; |
352 | ||
353 | rel_end = relocs + sec->reloc_count; | |
354 | for (rel = relocs; rel < rel_end; rel++) | |
355 | { | |
356 | long r_symndx; | |
357 | struct elf_link_hash_entry *h; | |
358 | ||
359 | r_symndx = ELF32_R_SYM (rel->r_info); | |
360 | if (r_symndx < symtab_hdr->sh_info) | |
361 | h = NULL; | |
362 | else | |
363 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
364 | ||
4fbc96ad KR |
365 | switch (ELF32_R_TYPE (rel->r_info)) |
366 | { | |
367 | case R_SPARC_GOT10: | |
368 | case R_SPARC_GOT13: | |
369 | case R_SPARC_GOT22: | |
370 | /* This symbol requires a global offset table entry. */ | |
371 | ||
12662be4 ILT |
372 | if (dynobj == NULL) |
373 | { | |
374 | /* Create the .got section. */ | |
375 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
376 | if (! elf32_sparc_create_got_section (dynobj, info)) | |
377 | return false; | |
378 | } | |
379 | ||
4fbc96ad KR |
380 | if (sgot == NULL) |
381 | { | |
382 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
12662be4 ILT |
383 | BFD_ASSERT (sgot != NULL); |
384 | } | |
385 | ||
386 | if (srelgot == NULL | |
387 | && (h != NULL || info->shared)) | |
388 | { | |
4fbc96ad KR |
389 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
390 | if (srelgot == NULL) | |
391 | { | |
392 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
393 | if (srelgot == NULL | |
394 | || ! bfd_set_section_flags (dynobj, srelgot, | |
395 | (SEC_ALLOC | |
396 | | SEC_LOAD | |
397 | | SEC_HAS_CONTENTS | |
398 | | SEC_IN_MEMORY | |
12662be4 ILT |
399 | | SEC_READONLY)) |
400 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
4fbc96ad KR |
401 | return false; |
402 | } | |
4fbc96ad KR |
403 | } |
404 | ||
405 | if (h != NULL) | |
406 | { | |
407 | if (h->got_offset != (bfd_vma) -1) | |
408 | { | |
409 | /* We have already allocated space in the .got. */ | |
410 | break; | |
411 | } | |
412 | h->got_offset = sgot->_raw_size; | |
12662be4 ILT |
413 | |
414 | /* Make sure this symbol is output as a dynamic symbol. */ | |
415 | if (h->dynindx == -1) | |
416 | { | |
417 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
418 | return false; | |
419 | } | |
420 | ||
421 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
4fbc96ad KR |
422 | } |
423 | else | |
424 | { | |
425 | /* This is a global offset table entry for a local | |
426 | symbol. */ | |
427 | if (local_got_offsets == NULL) | |
428 | { | |
429 | size_t size; | |
430 | register int i; | |
431 | ||
432 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
433 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
434 | if (local_got_offsets == NULL) | |
435 | { | |
436 | bfd_set_error (bfd_error_no_memory); | |
437 | return false; | |
438 | } | |
439 | elf_local_got_offsets (abfd) = local_got_offsets; | |
440 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
441 | local_got_offsets[i] = (bfd_vma) -1; | |
442 | } | |
443 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
444 | { | |
445 | /* We have already allocated space in the .got. */ | |
446 | break; | |
447 | } | |
448 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
12662be4 ILT |
449 | |
450 | if (info->shared) | |
451 | { | |
452 | /* If we are generating a shared object, we need to | |
453 | output a R_SPARC_RELATIVE reloc so that the | |
454 | dynamic linker can adjust this GOT entry. */ | |
455 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
456 | } | |
4fbc96ad KR |
457 | } |
458 | ||
459 | sgot->_raw_size += 4; | |
4fbc96ad KR |
460 | |
461 | break; | |
462 | ||
463 | case R_SPARC_WPLT30: | |
12662be4 ILT |
464 | /* This symbol requires a procedure linkage table entry. We |
465 | actually build the entry in adjust_dynamic_symbol, | |
466 | because this might be a case of linking PIC code without | |
467 | linking in any dynamic objects, in which case we don't | |
468 | need to generate a procedure linkage table after all. */ | |
4fbc96ad KR |
469 | |
470 | if (h == NULL) | |
471 | { | |
472 | /* It does not make sense to have a procedure linkage | |
473 | table entry for a local symbol. */ | |
474 | bfd_set_error (bfd_error_bad_value); | |
475 | return false; | |
476 | } | |
477 | ||
12662be4 ILT |
478 | /* Make sure this symbol is output as a dynamic symbol. */ |
479 | if (h->dynindx == -1) | |
4fbc96ad | 480 | { |
12662be4 ILT |
481 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
482 | return false; | |
4fbc96ad KR |
483 | } |
484 | ||
12662be4 | 485 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
4fbc96ad KR |
486 | |
487 | break; | |
488 | ||
489 | case R_SPARC_PC10: | |
490 | case R_SPARC_PC22: | |
491 | if (h != NULL | |
492 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
493 | break; | |
494 | /* Fall through. */ | |
495 | case R_SPARC_8: | |
496 | case R_SPARC_16: | |
497 | case R_SPARC_32: | |
498 | case R_SPARC_DISP8: | |
499 | case R_SPARC_DISP16: | |
500 | case R_SPARC_DISP32: | |
501 | case R_SPARC_WDISP30: | |
502 | case R_SPARC_WDISP22: | |
503 | case R_SPARC_HI22: | |
504 | case R_SPARC_22: | |
505 | case R_SPARC_13: | |
506 | case R_SPARC_LO10: | |
507 | case R_SPARC_UA32: | |
508 | if (info->shared | |
509 | && (sec->flags & SEC_ALLOC) != 0) | |
510 | { | |
511 | /* When creating a shared object, we must copy these | |
512 | relocs into the output file. We create a reloc | |
513 | section in dynobj and make room for the reloc. */ | |
514 | if (sreloc == NULL) | |
515 | { | |
516 | const char *name; | |
517 | ||
518 | name = (elf_string_from_elf_section | |
519 | (abfd, | |
520 | elf_elfheader (abfd)->e_shstrndx, | |
521 | elf_section_data (sec)->rel_hdr.sh_name)); | |
522 | if (name == NULL) | |
523 | return false; | |
524 | ||
525 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
526 | && strcmp (bfd_get_section_name (abfd, sec), | |
527 | name + 5) == 0); | |
528 | ||
529 | sreloc = bfd_get_section_by_name (dynobj, name); | |
530 | if (sreloc == NULL) | |
531 | { | |
532 | sreloc = bfd_make_section (dynobj, name); | |
533 | if (sreloc == NULL | |
534 | || ! bfd_set_section_flags (dynobj, sreloc, | |
535 | (SEC_ALLOC | |
536 | | SEC_LOAD | |
537 | | SEC_HAS_CONTENTS | |
538 | | SEC_IN_MEMORY | |
539 | | SEC_READONLY)) | |
540 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
541 | return false; | |
542 | } | |
543 | } | |
544 | ||
545 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
546 | } | |
547 | ||
548 | break; | |
549 | ||
550 | default: | |
551 | break; | |
552 | } | |
553 | } | |
013dec1a ILT |
554 | |
555 | return true; | |
556 | } | |
557 | ||
558 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
559 | regular object. The current definition is in some section of the | |
560 | dynamic object, but we're not including those sections. We have to | |
561 | change the definition to something the rest of the link can | |
562 | understand. */ | |
563 | ||
564 | static boolean | |
565 | elf32_sparc_adjust_dynamic_symbol (info, h) | |
566 | struct bfd_link_info *info; | |
567 | struct elf_link_hash_entry *h; | |
568 | { | |
569 | bfd *dynobj; | |
570 | asection *s; | |
571 | unsigned int power_of_two; | |
013dec1a ILT |
572 | |
573 | dynobj = elf_hash_table (info)->dynobj; | |
574 | ||
575 | /* Make sure we know what is going on here. */ | |
576 | BFD_ASSERT (dynobj != NULL | |
12662be4 ILT |
577 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
578 | || ((h->elf_link_hash_flags | |
579 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
580 | && (h->elf_link_hash_flags | |
581 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
582 | && (h->elf_link_hash_flags | |
583 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
f786a73f ILT |
584 | && (h->root.type == bfd_link_hash_defined |
585 | || h->root.type == bfd_link_hash_defweak) | |
f93fc389 ILT |
586 | && (bfd_get_flavour (h->root.u.def.section->owner) |
587 | == bfd_target_elf_flavour) | |
12662be4 ILT |
588 | && (elf_elfheader (h->root.u.def.section->owner)->e_type |
589 | == ET_DYN) | |
590 | && h->root.u.def.section->output_section == NULL))); | |
013dec1a ILT |
591 | |
592 | /* If this is a function, put it in the procedure linkage table. We | |
593 | will fill in the contents of the procedure linkage table later | |
594 | (although we could actually do it here). */ | |
12662be4 ILT |
595 | if (h->type == STT_FUNC |
596 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
013dec1a | 597 | { |
12662be4 | 598 | if (! elf_hash_table (info)->dynamic_sections_created) |
013dec1a | 599 | { |
12662be4 ILT |
600 | /* This case can occur if we saw a WPLT30 reloc in an input |
601 | file, but none of the input files were dynamic objects. | |
602 | In such a case, we don't actually need to build a | |
603 | procedure linkage table, and we can just do a WDISP30 | |
604 | reloc instead. */ | |
605 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
606 | return true; | |
607 | } | |
4fbc96ad | 608 | |
12662be4 ILT |
609 | s = bfd_get_section_by_name (dynobj, ".plt"); |
610 | BFD_ASSERT (s != NULL); | |
013dec1a | 611 | |
12662be4 ILT |
612 | /* The first four entries in .plt are reserved. */ |
613 | if (s->_raw_size == 0) | |
614 | s->_raw_size = 4 * PLT_ENTRY_SIZE; | |
013dec1a | 615 | |
12662be4 ILT |
616 | /* The procedure linkage table has a maximum size. */ |
617 | if (s->_raw_size >= 0x400000) | |
618 | { | |
619 | bfd_set_error (bfd_error_bad_value); | |
620 | return false; | |
621 | } | |
013dec1a | 622 | |
9b09a015 ILT |
623 | /* If this symbol is not defined in a regular file, and we are |
624 | not generating a shared library, then set the symbol to this | |
625 | location in the .plt. This is required to make function | |
626 | pointers compare as equal between the normal executable and | |
627 | the shared library. */ | |
628 | if (! info->shared | |
629 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
14cac507 ILT |
630 | { |
631 | h->root.u.def.section = s; | |
632 | h->root.u.def.value = s->_raw_size; | |
633 | } | |
013dec1a | 634 | |
12662be4 | 635 | h->plt_offset = s->_raw_size; |
4fbc96ad | 636 | |
12662be4 ILT |
637 | /* Make room for this entry. */ |
638 | s->_raw_size += PLT_ENTRY_SIZE; | |
639 | ||
640 | /* We also need to make an entry in the .rela.plt section. */ | |
641 | ||
642 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
643 | BFD_ASSERT (s != NULL); | |
644 | s->_raw_size += sizeof (Elf32_External_Rela); | |
013dec1a ILT |
645 | |
646 | return true; | |
647 | } | |
648 | ||
649 | /* If this is a weak symbol, and there is a real definition, the | |
650 | processor independent code will have arranged for us to see the | |
651 | real definition first, and we can just use the same value. */ | |
652 | if (h->weakdef != NULL) | |
653 | { | |
f786a73f ILT |
654 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
655 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
013dec1a ILT |
656 | h->root.u.def.section = h->weakdef->root.u.def.section; |
657 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
013dec1a ILT |
658 | return true; |
659 | } | |
660 | ||
661 | /* This is a reference to a symbol defined by a dynamic object which | |
4fbc96ad KR |
662 | is not a function. */ |
663 | ||
664 | /* If we are creating a shared library, we must presume that the | |
665 | only references to the symbol are via the global offset table. | |
666 | For such cases we need not do anything here; the relocations will | |
667 | be handled correctly by relocate_section. */ | |
668 | if (info->shared) | |
669 | return true; | |
670 | ||
671 | /* We must allocate the symbol in our .dynbss section, which will | |
672 | become part of the .bss section of the executable. There will be | |
673 | an entry for this symbol in the .dynsym section. The dynamic | |
674 | object will contain position independent code, so all references | |
675 | from the dynamic object to this symbol will go through the global | |
676 | offset table. The dynamic linker will use the .dynsym entry to | |
677 | determine the address it must put in the global offset table, so | |
678 | both the dynamic object and the regular object will refer to the | |
679 | same memory location for the variable. */ | |
013dec1a ILT |
680 | |
681 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
682 | BFD_ASSERT (s != NULL); | |
683 | ||
684 | /* If the symbol is currently defined in the .bss section of the | |
685 | dynamic object, then it is OK to simply initialize it to zero. | |
686 | If the symbol is in some other section, we must generate a | |
687 | R_SPARC_COPY reloc to tell the dynamic linker to copy the initial | |
688 | value out of the dynamic object and into the runtime process | |
689 | image. We need to remember the offset into the .rel.bss section | |
7c6da9ca | 690 | we are going to use. */ |
4fbc96ad | 691 | if ((h->root.u.def.section->flags & SEC_LOAD) != 0) |
013dec1a ILT |
692 | { |
693 | asection *srel; | |
694 | ||
695 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
696 | BFD_ASSERT (srel != NULL); | |
013dec1a | 697 | srel->_raw_size += sizeof (Elf32_External_Rela); |
4fbc96ad | 698 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
013dec1a ILT |
699 | } |
700 | ||
701 | /* We need to figure out the alignment required for this symbol. I | |
702 | have no idea how ELF linkers handle this. */ | |
7c6da9ca ILT |
703 | power_of_two = bfd_log2 (h->size); |
704 | if (power_of_two > 3) | |
705 | power_of_two = 3; | |
013dec1a ILT |
706 | |
707 | /* Apply the required alignment. */ | |
7c6da9ca ILT |
708 | s->_raw_size = BFD_ALIGN (s->_raw_size, |
709 | (bfd_size_type) (1 << power_of_two)); | |
013dec1a ILT |
710 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
711 | { | |
712 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
713 | return false; | |
714 | } | |
715 | ||
716 | /* Define the symbol as being at this point in the section. */ | |
717 | h->root.u.def.section = s; | |
718 | h->root.u.def.value = s->_raw_size; | |
719 | ||
720 | /* Increment the section size to make room for the symbol. */ | |
721 | s->_raw_size += h->size; | |
722 | ||
723 | return true; | |
724 | } | |
725 | ||
013dec1a ILT |
726 | /* Set the sizes of the dynamic sections. */ |
727 | ||
728 | static boolean | |
729 | elf32_sparc_size_dynamic_sections (output_bfd, info) | |
730 | bfd *output_bfd; | |
731 | struct bfd_link_info *info; | |
732 | { | |
733 | bfd *dynobj; | |
734 | asection *s; | |
4fbc96ad | 735 | boolean reltext; |
f786a73f | 736 | boolean relplt; |
013dec1a ILT |
737 | |
738 | dynobj = elf_hash_table (info)->dynobj; | |
739 | BFD_ASSERT (dynobj != NULL); | |
740 | ||
12662be4 | 741 | if (elf_hash_table (info)->dynamic_sections_created) |
8af74670 | 742 | { |
12662be4 ILT |
743 | /* Set the contents of the .interp section to the interpreter. */ |
744 | if (! info->shared) | |
745 | { | |
746 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
747 | BFD_ASSERT (s != NULL); | |
748 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
749 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
750 | } | |
751 | ||
752 | /* Make space for the trailing nop in .plt. */ | |
753 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
8af74670 | 754 | BFD_ASSERT (s != NULL); |
12662be4 ILT |
755 | if (s->_raw_size > 0) |
756 | s->_raw_size += 4; | |
757 | } | |
758 | else | |
759 | { | |
760 | /* We may have created entries in the .rela.got section. | |
761 | However, if we are not creating the dynamic sections, we will | |
762 | not actually use these entries. Reset the size of .rela.got, | |
763 | which will cause it to get stripped from the output file | |
764 | below. */ | |
765 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
766 | if (s != NULL) | |
767 | s->_raw_size = 0; | |
8af74670 | 768 | } |
013dec1a | 769 | |
4fbc96ad KR |
770 | /* The check_relocs and adjust_dynamic_symbol entry points have |
771 | determined the sizes of the various dynamic sections. Allocate | |
772 | memory for them. */ | |
773 | reltext = false; | |
f786a73f | 774 | relplt = false; |
4fbc96ad KR |
775 | for (s = dynobj->sections; s != NULL; s = s->next) |
776 | { | |
777 | const char *name; | |
12662be4 | 778 | boolean strip; |
4fbc96ad KR |
779 | |
780 | if ((s->flags & SEC_IN_MEMORY) == 0) | |
781 | continue; | |
782 | ||
783 | /* It's OK to base decisions on the section name, because none | |
784 | of the dynobj section names depend upon the input files. */ | |
785 | name = bfd_get_section_name (dynobj, s); | |
786 | ||
12662be4 ILT |
787 | strip = false; |
788 | ||
789 | if (strncmp (name, ".rela", 5) == 0) | |
4fbc96ad | 790 | { |
12662be4 ILT |
791 | if (s->_raw_size == 0) |
792 | { | |
793 | /* If we don't need this section, strip it from the | |
794 | output file. This is to handle .rela.bss and | |
795 | .rel.plt. We must create it in | |
796 | create_dynamic_sections, because it must be created | |
797 | before the linker maps input sections to output | |
798 | sections. The linker does that before | |
799 | adjust_dynamic_symbol is called, and it is that | |
800 | function which decides whether anything needs to go | |
801 | into these sections. */ | |
802 | strip = true; | |
803 | } | |
804 | else | |
805 | { | |
806 | asection *target; | |
807 | ||
808 | /* If this relocation section applies to a read only | |
809 | section, then we probably need a DT_TEXTREL entry. */ | |
810 | target = bfd_get_section_by_name (output_bfd, name + 5); | |
811 | if (target != NULL | |
812 | && (target->flags & SEC_READONLY) != 0) | |
813 | reltext = true; | |
814 | ||
f786a73f ILT |
815 | if (strcmp (name, ".rela.plt") == 0) |
816 | relplt = true; | |
817 | ||
12662be4 ILT |
818 | /* We use the reloc_count field as a counter if we need |
819 | to copy relocs into the output file. */ | |
820 | s->reloc_count = 0; | |
821 | } | |
4fbc96ad KR |
822 | } |
823 | else if (strcmp (name, ".plt") != 0 | |
824 | && strcmp (name, ".got") != 0) | |
825 | { | |
826 | /* It's not one of our sections, so don't allocate space. */ | |
827 | continue; | |
828 | } | |
12662be4 ILT |
829 | |
830 | if (strip) | |
831 | { | |
832 | asection **spp; | |
833 | ||
834 | for (spp = &s->output_section->owner->sections; | |
835 | *spp != s->output_section; | |
836 | spp = &(*spp)->next) | |
837 | ; | |
838 | *spp = s->output_section->next; | |
839 | --s->output_section->owner->section_count; | |
840 | ||
841 | continue; | |
842 | } | |
843 | ||
4fbc96ad KR |
844 | /* Allocate memory for the section contents. */ |
845 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); | |
846 | if (s->contents == NULL && s->_raw_size != 0) | |
847 | { | |
848 | bfd_set_error (bfd_error_no_memory); | |
849 | return false; | |
850 | } | |
851 | } | |
013dec1a | 852 | |
12662be4 | 853 | if (elf_hash_table (info)->dynamic_sections_created) |
4fbc96ad | 854 | { |
12662be4 ILT |
855 | /* Add some entries to the .dynamic section. We fill in the |
856 | values later, in elf32_sparc_finish_dynamic_sections, but we | |
857 | must add the entries now so that we get the correct size for | |
858 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
859 | dynamic linker and used by the debugger. */ | |
860 | if (! info->shared) | |
861 | { | |
862 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
863 | return false; | |
864 | } | |
013dec1a | 865 | |
f786a73f ILT |
866 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) |
867 | return false; | |
868 | ||
869 | if (relplt) | |
870 | { | |
871 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
872 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
873 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
874 | return false; | |
875 | } | |
876 | ||
877 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
12662be4 ILT |
878 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) |
879 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
880 | sizeof (Elf32_External_Rela))) | |
4fbc96ad | 881 | return false; |
12662be4 ILT |
882 | |
883 | if (reltext) | |
884 | { | |
885 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
886 | return false; | |
887 | } | |
4fbc96ad KR |
888 | } |
889 | ||
14cac507 ILT |
890 | /* If we are generating a shared library, we generate a section |
891 | symbol for each output section. These are local symbols, which | |
892 | means that they must come first in the dynamic symbol table. | |
893 | That means we must increment the dynamic symbol index of every | |
894 | other dynamic symbol. */ | |
895 | if (info->shared) | |
896 | { | |
897 | int c, i; | |
898 | ||
899 | c = bfd_count_sections (output_bfd); | |
900 | elf_link_hash_traverse (elf_hash_table (info), | |
901 | elf32_sparc_adjust_dynindx, | |
902 | (PTR) &c); | |
903 | elf_hash_table (info)->dynsymcount += c; | |
904 | ||
905 | for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) | |
906 | { | |
907 | elf_section_data (s)->dynindx = i; | |
908 | /* These symbols will have no names, so we don't need to | |
909 | fiddle with dynstr_index. */ | |
910 | } | |
911 | } | |
912 | ||
913 | return true; | |
914 | } | |
915 | ||
916 | /* Increment the index of a dynamic symbol by a given amount. Called | |
917 | via elf_link_hash_traverse. */ | |
918 | ||
919 | static boolean | |
920 | elf32_sparc_adjust_dynindx (h, cparg) | |
921 | struct elf_link_hash_entry *h; | |
922 | PTR cparg; | |
923 | { | |
924 | int *cp = (int *) cparg; | |
925 | ||
926 | if (h->dynindx != -1) | |
927 | h->dynindx += *cp; | |
013dec1a ILT |
928 | return true; |
929 | } | |
930 | ||
931 | /* Relocate a SPARC ELF section. */ | |
932 | ||
933 | static boolean | |
934 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, | |
12662be4 | 935 | contents, relocs, local_syms, local_sections) |
013dec1a ILT |
936 | bfd *output_bfd; |
937 | struct bfd_link_info *info; | |
938 | bfd *input_bfd; | |
939 | asection *input_section; | |
940 | bfd_byte *contents; | |
941 | Elf_Internal_Rela *relocs; | |
942 | Elf_Internal_Sym *local_syms; | |
943 | asection **local_sections; | |
944 | { | |
4fbc96ad | 945 | bfd *dynobj; |
013dec1a ILT |
946 | Elf_Internal_Shdr *symtab_hdr; |
947 | struct elf_link_hash_entry **sym_hashes; | |
4fbc96ad KR |
948 | bfd_vma *local_got_offsets; |
949 | asection *sgot; | |
950 | asection *splt; | |
951 | asection *sreloc; | |
013dec1a ILT |
952 | Elf_Internal_Rela *rel; |
953 | Elf_Internal_Rela *relend; | |
954 | ||
4fbc96ad | 955 | dynobj = elf_hash_table (info)->dynobj; |
013dec1a ILT |
956 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
957 | sym_hashes = elf_sym_hashes (input_bfd); | |
4fbc96ad KR |
958 | local_got_offsets = elf_local_got_offsets (input_bfd); |
959 | ||
960 | sgot = NULL; | |
961 | splt = NULL; | |
962 | sreloc = NULL; | |
013dec1a ILT |
963 | |
964 | rel = relocs; | |
965 | relend = relocs + input_section->reloc_count; | |
966 | for (; rel < relend; rel++) | |
967 | { | |
968 | int r_type; | |
82b1edf7 | 969 | reloc_howto_type *howto; |
013dec1a ILT |
970 | long r_symndx; |
971 | struct elf_link_hash_entry *h; | |
972 | Elf_Internal_Sym *sym; | |
973 | asection *sec; | |
974 | bfd_vma relocation; | |
975 | bfd_reloc_status_type r; | |
976 | ||
977 | r_type = ELF32_R_TYPE (rel->r_info); | |
978 | if (r_type < 0 || r_type >= (int) R_SPARC_max) | |
979 | { | |
980 | bfd_set_error (bfd_error_bad_value); | |
981 | return false; | |
982 | } | |
983 | howto = elf_sparc_howto_table + r_type; | |
984 | ||
985 | r_symndx = ELF32_R_SYM (rel->r_info); | |
986 | ||
987 | if (info->relocateable) | |
988 | { | |
989 | /* This is a relocateable link. We don't have to change | |
990 | anything, unless the reloc is against a section symbol, | |
991 | in which case we have to adjust according to where the | |
992 | section symbol winds up in the output section. */ | |
993 | if (r_symndx < symtab_hdr->sh_info) | |
994 | { | |
995 | sym = local_syms + r_symndx; | |
996 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
997 | { | |
998 | sec = local_sections[r_symndx]; | |
999 | rel->r_addend += sec->output_offset + sym->st_value; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | continue; | |
1004 | } | |
1005 | ||
1006 | /* This is a final link. */ | |
1007 | h = NULL; | |
1008 | sym = NULL; | |
1009 | sec = NULL; | |
1010 | if (r_symndx < symtab_hdr->sh_info) | |
1011 | { | |
1012 | sym = local_syms + r_symndx; | |
1013 | sec = local_sections[r_symndx]; | |
1014 | relocation = (sec->output_section->vma | |
1015 | + sec->output_offset | |
1016 | + sym->st_value); | |
1017 | } | |
1018 | else | |
1019 | { | |
4fbc96ad | 1020 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
f786a73f ILT |
1021 | if (h->root.type == bfd_link_hash_defined |
1022 | || h->root.type == bfd_link_hash_defweak) | |
013dec1a ILT |
1023 | { |
1024 | sec = h->root.u.def.section; | |
9b09a015 ILT |
1025 | if ((r_type == R_SPARC_WPLT30 |
1026 | && h->plt_offset != (bfd_vma) -1) | |
1027 | || ((r_type == R_SPARC_GOT10 | |
1028 | || r_type == R_SPARC_GOT13 | |
1029 | || r_type == R_SPARC_GOT22) | |
1030 | && elf_hash_table (info)->dynamic_sections_created) | |
1031 | || (info->shared | |
1032 | && (input_section->flags & SEC_ALLOC) != 0 | |
1033 | && (r_type == R_SPARC_8 | |
1034 | || r_type == R_SPARC_16 | |
1035 | || r_type == R_SPARC_32 | |
1036 | || r_type == R_SPARC_DISP8 | |
1037 | || r_type == R_SPARC_DISP16 | |
1038 | || r_type == R_SPARC_DISP32 | |
1039 | || r_type == R_SPARC_WDISP30 | |
1040 | || r_type == R_SPARC_WDISP22 | |
1041 | || r_type == R_SPARC_HI22 | |
1042 | || r_type == R_SPARC_22 | |
1043 | || r_type == R_SPARC_13 | |
1044 | || r_type == R_SPARC_LO10 | |
1045 | || r_type == R_SPARC_UA32 | |
1046 | || ((r_type == R_SPARC_PC10 | |
1047 | || r_type == R_SPARC_PC22) | |
1048 | && strcmp (h->root.root.string, | |
1049 | "_GLOBAL_OFFSET_TABLE_") != 0)))) | |
1050 | { | |
1051 | /* In these cases, we don't need the relocation | |
1052 | value. We check specially because in some | |
1053 | obscure cases sec->output_section will be NULL. */ | |
1054 | relocation = 0; | |
1055 | } | |
1056 | else | |
1057 | relocation = (h->root.u.def.value | |
1058 | + sec->output_section->vma | |
1059 | + sec->output_offset); | |
013dec1a | 1060 | } |
f786a73f | 1061 | else if (h->root.type == bfd_link_hash_undefweak) |
013dec1a | 1062 | relocation = 0; |
4fbc96ad KR |
1063 | else if (info->shared) |
1064 | relocation = 0; | |
013dec1a ILT |
1065 | else |
1066 | { | |
1067 | if (! ((*info->callbacks->undefined_symbol) | |
1068 | (info, h->root.root.string, input_bfd, | |
1069 | input_section, rel->r_offset))) | |
1070 | return false; | |
1071 | relocation = 0; | |
1072 | } | |
1073 | } | |
1074 | ||
4fbc96ad KR |
1075 | switch (r_type) |
1076 | { | |
1077 | case R_SPARC_GOT10: | |
1078 | case R_SPARC_GOT13: | |
1079 | case R_SPARC_GOT22: | |
1080 | /* Relocation is to the entry for this symbol in the global | |
1081 | offset table. */ | |
1082 | if (sgot == NULL) | |
1083 | { | |
1084 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1085 | BFD_ASSERT (sgot != NULL); | |
1086 | } | |
1087 | ||
1088 | if (h != NULL) | |
1089 | { | |
12662be4 ILT |
1090 | bfd_vma off; |
1091 | ||
1092 | off = h->got_offset; | |
1093 | BFD_ASSERT (off != (bfd_vma) -1); | |
1094 | ||
1095 | if (! elf_hash_table (info)->dynamic_sections_created) | |
1096 | { | |
1097 | /* This is actually a static link. We must | |
1098 | initialize this entry in the global offset table. | |
1099 | Since the offset must always be a multiple of 4, | |
1100 | we use the least significant bit to record | |
1101 | whether we have initialized it already. | |
1102 | ||
1103 | When doing a dynamic link, we create a .rela.got | |
1104 | relocation entry to initialize the value. This | |
1105 | is done in the finish_dynamic_symbol routine. */ | |
1106 | if ((off & 1) != 0) | |
1107 | off &= ~1; | |
1108 | else | |
1109 | { | |
1110 | bfd_put_32 (output_bfd, relocation, | |
1111 | sgot->contents + off); | |
1112 | h->got_offset |= 1; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | relocation = sgot->output_offset + off; | |
4fbc96ad KR |
1117 | } |
1118 | else | |
1119 | { | |
1120 | bfd_vma off; | |
1121 | ||
1122 | BFD_ASSERT (local_got_offsets != NULL | |
1123 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1124 | ||
1125 | off = local_got_offsets[r_symndx]; | |
1126 | ||
1127 | /* The offset must always be a multiple of 4. We use | |
12662be4 ILT |
1128 | the least significant bit to record whether we have |
1129 | already processed this entry. */ | |
4fbc96ad KR |
1130 | if ((off & 1) != 0) |
1131 | off &= ~1; | |
1132 | else | |
1133 | { | |
4fbc96ad KR |
1134 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
1135 | ||
12662be4 ILT |
1136 | if (info->shared) |
1137 | { | |
1138 | asection *srelgot; | |
1139 | Elf_Internal_Rela outrel; | |
1140 | ||
1141 | /* We need to generate a R_SPARC_RELATIVE reloc | |
1142 | for the dynamic linker. */ | |
1143 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1144 | BFD_ASSERT (srelgot != NULL); | |
1145 | ||
1146 | outrel.r_offset = (sgot->output_section->vma | |
1147 | + sgot->output_offset | |
1148 | + off); | |
1149 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1150 | outrel.r_addend = 0; | |
1151 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1152 | (((Elf32_External_Rela *) | |
1153 | srelgot->contents) | |
1154 | + srelgot->reloc_count)); | |
1155 | ++srelgot->reloc_count; | |
1156 | } | |
4fbc96ad KR |
1157 | |
1158 | local_got_offsets[r_symndx] |= 1; | |
1159 | } | |
1160 | ||
1161 | relocation = sgot->output_offset + off; | |
1162 | } | |
1163 | ||
1164 | break; | |
1165 | ||
1166 | case R_SPARC_WPLT30: | |
1167 | /* Relocation is to the entry for this symbol in the | |
1168 | procedure linkage table. */ | |
12662be4 ILT |
1169 | BFD_ASSERT (h != NULL); |
1170 | ||
1171 | if (h->plt_offset == (bfd_vma) -1) | |
1172 | { | |
1173 | /* We didn't make a PLT entry for this symbol. This | |
1174 | happens when statically linking PIC code. */ | |
1175 | break; | |
1176 | } | |
1177 | ||
4fbc96ad KR |
1178 | if (splt == NULL) |
1179 | { | |
1180 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1181 | BFD_ASSERT (splt != NULL); | |
1182 | } | |
1183 | ||
4fbc96ad KR |
1184 | relocation = (splt->output_section->vma |
1185 | + splt->output_offset | |
1186 | + h->plt_offset); | |
1187 | break; | |
1188 | ||
1189 | case R_SPARC_PC10: | |
1190 | case R_SPARC_PC22: | |
1191 | if (h != NULL | |
1192 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1193 | break; | |
1194 | /* Fall through. */ | |
1195 | case R_SPARC_8: | |
1196 | case R_SPARC_16: | |
1197 | case R_SPARC_32: | |
1198 | case R_SPARC_DISP8: | |
1199 | case R_SPARC_DISP16: | |
1200 | case R_SPARC_DISP32: | |
1201 | case R_SPARC_WDISP30: | |
1202 | case R_SPARC_WDISP22: | |
1203 | case R_SPARC_HI22: | |
1204 | case R_SPARC_22: | |
1205 | case R_SPARC_13: | |
1206 | case R_SPARC_LO10: | |
1207 | case R_SPARC_UA32: | |
1208 | if (info->shared | |
1209 | && (input_section->flags & SEC_ALLOC) != 0) | |
1210 | { | |
1211 | Elf_Internal_Rela outrel; | |
1212 | ||
1213 | /* When generating a shared object, these relocations | |
1214 | are copied into the output file to be resolved at run | |
1215 | time. */ | |
1216 | ||
1217 | if (sreloc == NULL) | |
1218 | { | |
1219 | const char *name; | |
1220 | ||
1221 | name = (elf_string_from_elf_section | |
1222 | (input_bfd, | |
1223 | elf_elfheader (input_bfd)->e_shstrndx, | |
1224 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1225 | if (name == NULL) | |
1226 | return false; | |
1227 | ||
1228 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1229 | && strcmp (bfd_get_section_name (input_bfd, | |
1230 | input_section), | |
1231 | name + 5) == 0); | |
1232 | ||
1233 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1234 | BFD_ASSERT (sreloc != NULL); | |
1235 | } | |
1236 | ||
1237 | outrel.r_offset = (rel->r_offset | |
1238 | + input_section->output_section->vma | |
1239 | + input_section->output_offset); | |
1240 | if (h != NULL) | |
1241 | { | |
12662be4 | 1242 | BFD_ASSERT (h->dynindx != -1); |
4fbc96ad | 1243 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
14cac507 | 1244 | outrel.r_addend = rel->r_addend; |
4fbc96ad KR |
1245 | } |
1246 | else | |
1247 | { | |
14cac507 | 1248 | if (r_type == R_SPARC_32) |
4fbc96ad | 1249 | { |
14cac507 ILT |
1250 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); |
1251 | outrel.r_addend = relocation + rel->r_addend; | |
4fbc96ad KR |
1252 | } |
1253 | else | |
1254 | { | |
14cac507 ILT |
1255 | long indx; |
1256 | ||
1257 | sym = local_syms + r_symndx; | |
1258 | ||
1259 | BFD_ASSERT (ELF_ST_TYPE (sym->st_info) == STT_SECTION); | |
1260 | ||
1261 | sec = local_sections[r_symndx]; | |
1262 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1263 | indx = 0; | |
1264 | else if (sec == NULL || sec->owner == NULL) | |
1265 | { | |
1266 | bfd_set_error (bfd_error_bad_value); | |
1267 | return false; | |
1268 | } | |
1269 | else | |
1270 | { | |
1271 | asection *osec; | |
1272 | ||
1273 | osec = sec->output_section; | |
1274 | indx = elf_section_data (osec)->dynindx; | |
1275 | if (indx == 0) | |
1276 | abort (); | |
1277 | } | |
1278 | ||
1279 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1280 | outrel.r_addend = relocation + rel->r_addend; | |
4fbc96ad | 1281 | } |
4fbc96ad KR |
1282 | } |
1283 | ||
1284 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1285 | (((Elf32_External_Rela *) | |
1286 | sreloc->contents) | |
1287 | + sreloc->reloc_count)); | |
1288 | ++sreloc->reloc_count; | |
1289 | ||
1290 | /* This reloc will be computed at runtime, so there's no | |
1291 | need to do anything now. */ | |
1292 | continue; | |
1293 | } | |
1294 | ||
1295 | default: | |
1296 | break; | |
1297 | } | |
1298 | ||
013dec1a ILT |
1299 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1300 | contents, rel->r_offset, | |
1301 | relocation, rel->r_addend); | |
1302 | ||
1303 | if (r != bfd_reloc_ok) | |
1304 | { | |
1305 | switch (r) | |
1306 | { | |
1307 | default: | |
1308 | case bfd_reloc_outofrange: | |
1309 | abort (); | |
1310 | case bfd_reloc_overflow: | |
1311 | { | |
1312 | const char *name; | |
1313 | ||
1314 | if (h != NULL) | |
1315 | name = h->root.root.string; | |
1316 | else | |
1317 | { | |
12662be4 ILT |
1318 | name = elf_string_from_elf_section (input_bfd, |
1319 | symtab_hdr->sh_link, | |
1320 | sym->st_name); | |
013dec1a ILT |
1321 | if (name == NULL) |
1322 | return false; | |
1323 | if (*name == '\0') | |
1324 | name = bfd_section_name (input_bfd, sec); | |
1325 | } | |
1326 | if (! ((*info->callbacks->reloc_overflow) | |
1327 | (info, name, howto->name, (bfd_vma) 0, | |
1328 | input_bfd, input_section, rel->r_offset))) | |
1329 | return false; | |
1330 | } | |
1331 | break; | |
1332 | } | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | return true; | |
1337 | } | |
1338 | ||
1339 | /* Finish up dynamic symbol handling. We set the contents of various | |
1340 | dynamic sections here. */ | |
1341 | ||
1342 | static boolean | |
1343 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) | |
1344 | bfd *output_bfd; | |
1345 | struct bfd_link_info *info; | |
1346 | struct elf_link_hash_entry *h; | |
1347 | Elf_Internal_Sym *sym; | |
1348 | { | |
4fbc96ad | 1349 | bfd *dynobj; |
013dec1a | 1350 | |
4fbc96ad | 1351 | dynobj = elf_hash_table (info)->dynobj; |
013dec1a | 1352 | |
4fbc96ad | 1353 | if (h->plt_offset != (bfd_vma) -1) |
013dec1a ILT |
1354 | { |
1355 | asection *splt; | |
1356 | asection *srela; | |
1357 | Elf_Internal_Rela rela; | |
1358 | ||
4fbc96ad KR |
1359 | /* This symbol has an entry in the procedure linkage table. Set |
1360 | it up. */ | |
1361 | ||
1362 | BFD_ASSERT (h->dynindx != -1); | |
1363 | ||
1364 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1365 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1366 | BFD_ASSERT (splt != NULL && srela != NULL); | |
013dec1a ILT |
1367 | |
1368 | /* Fill in the entry in the procedure linkage table. */ | |
1369 | bfd_put_32 (output_bfd, | |
4fbc96ad KR |
1370 | PLT_ENTRY_WORD0 + h->plt_offset, |
1371 | splt->contents + h->plt_offset); | |
013dec1a ILT |
1372 | bfd_put_32 (output_bfd, |
1373 | (PLT_ENTRY_WORD1 | |
4fbc96ad KR |
1374 | + (((- (h->plt_offset + 4)) >> 2) & 0x3fffff)), |
1375 | splt->contents + h->plt_offset + 4); | |
013dec1a | 1376 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, |
4fbc96ad | 1377 | splt->contents + h->plt_offset + 8); |
013dec1a ILT |
1378 | |
1379 | /* Fill in the entry in the .rela.plt section. */ | |
1380 | rela.r_offset = (splt->output_section->vma | |
1381 | + splt->output_offset | |
4fbc96ad | 1382 | + h->plt_offset); |
013dec1a ILT |
1383 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); |
1384 | rela.r_addend = 0; | |
1385 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1386 | ((Elf32_External_Rela *) srela->contents | |
4fbc96ad KR |
1387 | + h->plt_offset / PLT_ENTRY_SIZE - 4)); |
1388 | ||
1389 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1390 | { | |
1391 | /* Mark the symbol as undefined, rather than as defined in | |
1392 | the .plt section. Leave the value alone. */ | |
1393 | sym->st_shndx = SHN_UNDEF; | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | if (h->got_offset != (bfd_vma) -1) | |
1398 | { | |
1399 | asection *sgot; | |
1400 | asection *srela; | |
1401 | Elf_Internal_Rela rela; | |
1402 | ||
1403 | /* This symbol has an entry in the global offset table. Set it | |
1404 | up. */ | |
013dec1a | 1405 | |
4fbc96ad KR |
1406 | BFD_ASSERT (h->dynindx != -1); |
1407 | ||
1408 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1409 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1410 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1411 | ||
1412 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got_offset); | |
1413 | ||
1414 | rela.r_offset = (sgot->output_section->vma | |
1415 | + sgot->output_offset | |
1416 | + h->got_offset); | |
1417 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); | |
1418 | rela.r_addend = 0; | |
1419 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1420 | ((Elf32_External_Rela *) srela->contents | |
1421 | + srela->reloc_count)); | |
1422 | ++srela->reloc_count; | |
013dec1a | 1423 | } |
4fbc96ad KR |
1424 | |
1425 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
013dec1a | 1426 | { |
4fbc96ad KR |
1427 | asection *s; |
1428 | Elf_Internal_Rela rela; | |
013dec1a | 1429 | |
4fbc96ad | 1430 | /* This symbols needs a copy reloc. Set it up. */ |
013dec1a | 1431 | |
4fbc96ad KR |
1432 | BFD_ASSERT (h->dynindx != -1); |
1433 | ||
1434 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1435 | ".rela.bss"); | |
1436 | BFD_ASSERT (s != NULL); | |
1437 | ||
1438 | rela.r_offset = (h->root.u.def.value | |
1439 | + h->root.u.def.section->output_section->vma | |
1440 | + h->root.u.def.section->output_offset); | |
1441 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); | |
1442 | rela.r_addend = 0; | |
1443 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1444 | ((Elf32_External_Rela *) s->contents | |
1445 | + s->reloc_count)); | |
1446 | ++s->reloc_count; | |
013dec1a ILT |
1447 | } |
1448 | ||
4fbc96ad KR |
1449 | /* Mark some specially defined symbols as absolute. */ |
1450 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1451 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
1452 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
1453 | sym->st_shndx = SHN_ABS; | |
1454 | ||
013dec1a ILT |
1455 | return true; |
1456 | } | |
1457 | ||
1458 | /* Finish up the dynamic sections. */ | |
1459 | ||
1460 | static boolean | |
1461 | elf32_sparc_finish_dynamic_sections (output_bfd, info) | |
1462 | bfd *output_bfd; | |
1463 | struct bfd_link_info *info; | |
1464 | { | |
4fbc96ad | 1465 | bfd *dynobj; |
013dec1a | 1466 | asection *sdyn; |
12662be4 | 1467 | asection *sgot; |
013dec1a | 1468 | |
4fbc96ad KR |
1469 | dynobj = elf_hash_table (info)->dynobj; |
1470 | ||
4fbc96ad | 1471 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
013dec1a | 1472 | |
12662be4 | 1473 | if (elf_hash_table (info)->dynamic_sections_created) |
013dec1a | 1474 | { |
12662be4 ILT |
1475 | asection *splt; |
1476 | Elf32_External_Dyn *dyncon, *dynconend; | |
013dec1a | 1477 | |
12662be4 ILT |
1478 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
1479 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
013dec1a | 1480 | |
12662be4 ILT |
1481 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
1482 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1483 | for (; dyncon < dynconend; dyncon++) | |
013dec1a | 1484 | { |
12662be4 ILT |
1485 | Elf_Internal_Dyn dyn; |
1486 | const char *name; | |
1487 | boolean size; | |
013dec1a | 1488 | |
12662be4 | 1489 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
013dec1a | 1490 | |
12662be4 ILT |
1491 | switch (dyn.d_tag) |
1492 | { | |
1493 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
1494 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
1495 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
1496 | default: name = NULL; size = false; break; | |
1497 | } | |
1498 | ||
1499 | if (name != NULL) | |
013dec1a | 1500 | { |
12662be4 ILT |
1501 | asection *s; |
1502 | ||
1503 | s = bfd_get_section_by_name (output_bfd, name); | |
14cac507 ILT |
1504 | if (s == NULL) |
1505 | dyn.d_un.d_val = 0; | |
013dec1a | 1506 | else |
12662be4 | 1507 | { |
14cac507 ILT |
1508 | if (! size) |
1509 | dyn.d_un.d_ptr = s->vma; | |
12662be4 | 1510 | else |
14cac507 ILT |
1511 | { |
1512 | if (s->_cooked_size != 0) | |
1513 | dyn.d_un.d_val = s->_cooked_size; | |
1514 | else | |
1515 | dyn.d_un.d_val = s->_raw_size; | |
1516 | } | |
12662be4 ILT |
1517 | } |
1518 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
013dec1a | 1519 | } |
013dec1a | 1520 | } |
013dec1a | 1521 | |
12662be4 ILT |
1522 | /* Clear the first four entries in the procedure linkage table, |
1523 | and put a nop in the last four bytes. */ | |
1524 | if (splt->_raw_size > 0) | |
1525 | { | |
1526 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); | |
1527 | bfd_put_32 (output_bfd, SPARC_NOP, | |
1528 | splt->contents + splt->_raw_size - 4); | |
1529 | } | |
1530 | ||
1531 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1532 | PLT_ENTRY_SIZE; | |
013dec1a ILT |
1533 | } |
1534 | ||
1535 | /* Set the first entry in the global offset table to the address of | |
1536 | the dynamic section. */ | |
12662be4 ILT |
1537 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1538 | BFD_ASSERT (sgot != NULL); | |
013dec1a | 1539 | if (sgot->_raw_size > 0) |
12662be4 ILT |
1540 | { |
1541 | if (sdyn == NULL) | |
1542 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1543 | else | |
1544 | bfd_put_32 (output_bfd, | |
1545 | sdyn->output_section->vma + sdyn->output_offset, | |
1546 | sgot->contents); | |
1547 | } | |
013dec1a ILT |
1548 | |
1549 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
013dec1a | 1550 | |
14cac507 ILT |
1551 | if (info->shared) |
1552 | { | |
1553 | asection *sdynsym; | |
1554 | asection *s; | |
1555 | Elf_Internal_Sym sym; | |
1556 | ||
1557 | /* Set up the section symbols for the output sections. */ | |
1558 | ||
1559 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
1560 | BFD_ASSERT (sdynsym != NULL); | |
1561 | ||
1562 | sym.st_size = 0; | |
1563 | sym.st_name = 0; | |
1564 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
1565 | sym.st_other = 0; | |
1566 | ||
1567 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
1568 | { | |
1569 | int indx; | |
1570 | ||
1571 | sym.st_value = s->vma; | |
1572 | ||
1573 | indx = elf_section_data (s)->this_idx; | |
1574 | BFD_ASSERT (indx > 0); | |
1575 | sym.st_shndx = indx; | |
1576 | ||
1577 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
1578 | ((Elf32_External_Sym *) sdynsym->contents | |
1579 | + elf_section_data (s)->dynindx)); | |
1580 | } | |
1581 | ||
1582 | /* Set the sh_info field of the output .dynsym section to the | |
1583 | index of the first global symbol. */ | |
1584 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
1585 | bfd_count_sections (output_bfd) + 1; | |
1586 | } | |
1587 | ||
013dec1a ILT |
1588 | return true; |
1589 | } | |
1590 | ||
32090b8e KR |
1591 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec |
1592 | #define TARGET_BIG_NAME "elf32-sparc" | |
1593 | #define ELF_ARCH bfd_arch_sparc | |
013dec1a ILT |
1594 | #define ELF_MACHINE_CODE EM_SPARC |
1595 | #define ELF_MAXPAGESIZE 0x10000 | |
1596 | #define elf_backend_create_dynamic_sections \ | |
1597 | elf32_sparc_create_dynamic_sections | |
4fbc96ad | 1598 | #define elf_backend_check_relocs elf32_sparc_check_relocs |
013dec1a ILT |
1599 | #define elf_backend_adjust_dynamic_symbol \ |
1600 | elf32_sparc_adjust_dynamic_symbol | |
1601 | #define elf_backend_size_dynamic_sections \ | |
1602 | elf32_sparc_size_dynamic_sections | |
1603 | #define elf_backend_relocate_section elf32_sparc_relocate_section | |
1604 | #define elf_backend_finish_dynamic_symbol \ | |
1605 | elf32_sparc_finish_dynamic_symbol | |
1606 | #define elf_backend_finish_dynamic_sections \ | |
1607 | elf32_sparc_finish_dynamic_sections | |
32090b8e KR |
1608 | |
1609 | #include "elf32-target.h" |