/src/binutils-gdb/bfd/elf32-sh.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* Renesas / SuperH SH specific support for 32-bit ELF |
2 | | Copyright (C) 1996-2025 Free Software Foundation, Inc. |
3 | | Contributed by Ian Lance Taylor, Cygnus Support. |
4 | | |
5 | | This file is part of BFD, the Binary File Descriptor library. |
6 | | |
7 | | This program is free software; you can redistribute it and/or modify |
8 | | it under the terms of the GNU General Public License as published by |
9 | | the Free Software Foundation; either version 3 of the License, or |
10 | | (at your option) any later version. |
11 | | |
12 | | This program is distributed in the hope that it will be useful, |
13 | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | | GNU General Public License for more details. |
16 | | |
17 | | You should have received a copy of the GNU General Public License |
18 | | along with this program; if not, write to the Free Software |
19 | | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | | MA 02110-1301, USA. */ |
21 | | |
22 | | #include "sysdep.h" |
23 | | #include "bfd.h" |
24 | | #include "bfdlink.h" |
25 | | #include "libbfd.h" |
26 | | #include "elf-bfd.h" |
27 | | #include "elf-vxworks.h" |
28 | | #include "elf/sh.h" |
29 | | #include "dwarf2.h" |
30 | | #include "libiberty.h" |
31 | | #include "../opcodes/sh-opc.h" |
32 | | |
33 | | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
34 | 0 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 |
35 | | |
36 | | static bfd_reloc_status_type sh_elf_reloc |
37 | | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
38 | | static bfd_reloc_status_type sh_elf_ignore_reloc |
39 | | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
40 | | static bool sh_elf_relax_delete_bytes |
41 | | (bfd *, asection *, bfd_vma, int); |
42 | | static bool sh_elf_align_loads |
43 | | (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bool *); |
44 | | static bool sh_elf_swap_insns |
45 | | (bfd *, asection *, void *, bfd_byte *, bfd_vma); |
46 | | static int sh_elf_optimized_tls_reloc |
47 | | (struct bfd_link_info *, int, int); |
48 | | static bfd_vma dtpoff_base |
49 | | (struct bfd_link_info *); |
50 | | static bfd_vma tpoff |
51 | | (struct bfd_link_info *, bfd_vma); |
52 | | |
53 | | /* The name of the dynamic interpreter. This is put in the .interp |
54 | | section. */ |
55 | | |
56 | 0 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" |
57 | | |
58 | | /* FDPIC binaries have a default 128K stack. */ |
59 | 0 | #define DEFAULT_STACK_SIZE 0x20000 |
60 | | |
61 | 0 | #define MINUS_ONE ((bfd_vma) 0 - 1) |
62 | | |
63 | | /* Decide whether a reference to a symbol can be resolved locally or |
64 | | not. If the symbol is protected, we want the local address, but |
65 | | its function descriptor must be assigned by the dynamic linker. */ |
66 | | #define SYMBOL_FUNCDESC_LOCAL(INFO, H) \ |
67 | 0 | (SYMBOL_REFERENCES_LOCAL (INFO, H) \ |
68 | 0 | || ! elf_hash_table (INFO)->dynamic_sections_created) |
69 | | |
70 | | #define SH_PARTIAL32 true |
71 | | #define SH_SRC_MASK32 0xffffffff |
72 | | #define SH_ELF_RELOC sh_elf_reloc |
73 | | static reloc_howto_type sh_elf_howto_table[] = |
74 | | { |
75 | | #include "elf32-sh-relocs.h" |
76 | | }; |
77 | | |
78 | | #define SH_PARTIAL32 false |
79 | | #define SH_SRC_MASK32 0 |
80 | | #define SH_ELF_RELOC bfd_elf_generic_reloc |
81 | | static reloc_howto_type sh_vxworks_howto_table[] = |
82 | | { |
83 | | #include "elf32-sh-relocs.h" |
84 | | }; |
85 | | |
86 | | /* Return true if OUTPUT_BFD is a VxWorks object. */ |
87 | | |
88 | | static bool |
89 | | vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED) |
90 | 1.36k | { |
91 | 1.36k | #if !defined SH_TARGET_ALREADY_DEFINED |
92 | 1.36k | extern const bfd_target sh_elf32_vxworks_le_vec; |
93 | 1.36k | extern const bfd_target sh_elf32_vxworks_vec; |
94 | | |
95 | 1.36k | return (abfd->xvec == &sh_elf32_vxworks_le_vec |
96 | 1.36k | || abfd->xvec == &sh_elf32_vxworks_vec); |
97 | | #else |
98 | | return false; |
99 | | #endif |
100 | 1.36k | } |
101 | | |
102 | | /* Return true if OUTPUT_BFD is an FDPIC object. */ |
103 | | |
104 | | static bool |
105 | | fdpic_object_p (bfd *abfd ATTRIBUTE_UNUSED) |
106 | 22.9k | { |
107 | 22.9k | #if !defined SH_TARGET_ALREADY_DEFINED |
108 | 22.9k | extern const bfd_target sh_elf32_fdpic_le_vec; |
109 | 22.9k | extern const bfd_target sh_elf32_fdpic_be_vec; |
110 | | |
111 | 22.9k | return (abfd->xvec == &sh_elf32_fdpic_le_vec |
112 | 22.9k | || abfd->xvec == &sh_elf32_fdpic_be_vec); |
113 | | #else |
114 | | return false; |
115 | | #endif |
116 | 22.9k | } |
117 | | |
118 | | /* Return the howto table for ABFD. */ |
119 | | |
120 | | static reloc_howto_type * |
121 | | get_howto_table (bfd *abfd) |
122 | 826 | { |
123 | 826 | if (vxworks_object_p (abfd)) |
124 | 0 | return sh_vxworks_howto_table; |
125 | 826 | return sh_elf_howto_table; |
126 | 826 | } |
127 | | |
128 | | static bfd_reloc_status_type |
129 | | sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd, |
130 | | asection *input_section, bfd_byte *contents, |
131 | | bfd_vma addr, asection *symbol_section, |
132 | | bfd_vma start, bfd_vma end) |
133 | 0 | { |
134 | 0 | static bfd_vma last_addr; |
135 | 0 | static asection *last_symbol_section; |
136 | 0 | bfd_byte *start_ptr, *ptr, *last_ptr; |
137 | 0 | int diff, cum_diff; |
138 | 0 | bfd_signed_vma x; |
139 | 0 | int insn; |
140 | | |
141 | | /* Sanity check the address. */ |
142 | 0 | if (addr > bfd_get_section_limit (input_bfd, input_section)) |
143 | 0 | return bfd_reloc_outofrange; |
144 | | |
145 | | /* We require the start and end relocations to be processed consecutively - |
146 | | although we allow then to be processed forwards or backwards. */ |
147 | 0 | if (! last_addr) |
148 | 0 | { |
149 | 0 | last_addr = addr; |
150 | 0 | last_symbol_section = symbol_section; |
151 | 0 | return bfd_reloc_ok; |
152 | 0 | } |
153 | 0 | if (last_addr != addr) |
154 | 0 | abort (); |
155 | 0 | last_addr = 0; |
156 | |
|
157 | 0 | if (! symbol_section || last_symbol_section != symbol_section || end < start) |
158 | 0 | return bfd_reloc_outofrange; |
159 | | |
160 | | /* Get the symbol_section contents. */ |
161 | 0 | if (symbol_section != input_section) |
162 | 0 | { |
163 | 0 | if (elf_section_data (symbol_section)->this_hdr.contents != NULL) |
164 | 0 | contents = elf_section_data (symbol_section)->this_hdr.contents; |
165 | 0 | else |
166 | 0 | { |
167 | 0 | if (!bfd_malloc_and_get_section (input_bfd, symbol_section, |
168 | 0 | &contents)) |
169 | 0 | { |
170 | 0 | free (contents); |
171 | 0 | return bfd_reloc_outofrange; |
172 | 0 | } |
173 | 0 | } |
174 | 0 | } |
175 | 0 | #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800) |
176 | 0 | start_ptr = contents + start; |
177 | 0 | for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;) |
178 | 0 | { |
179 | 0 | for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);) |
180 | 0 | ptr -= 2; |
181 | 0 | ptr += 2; |
182 | 0 | diff = (last_ptr - ptr) >> 1; |
183 | 0 | cum_diff += diff & 1; |
184 | 0 | cum_diff += diff; |
185 | 0 | } |
186 | | /* Calculate the start / end values to load into rs / re minus four - |
187 | | so that will cancel out the four we would otherwise have to add to |
188 | | addr to get the value to subtract in order to get relative addressing. */ |
189 | 0 | if (cum_diff >= 0) |
190 | 0 | { |
191 | 0 | start -= 4; |
192 | 0 | end = (ptr + cum_diff * 2) - contents; |
193 | 0 | } |
194 | 0 | else |
195 | 0 | { |
196 | 0 | bfd_vma start0 = start - 4; |
197 | |
|
198 | 0 | while (start0 && IS_PPI (contents + start0)) |
199 | 0 | start0 -= 2; |
200 | 0 | start0 = start - 2 - ((start - start0) & 2); |
201 | 0 | start = start0 - cum_diff - 2; |
202 | 0 | end = start0; |
203 | 0 | } |
204 | |
|
205 | 0 | if (elf_section_data (symbol_section)->this_hdr.contents != contents) |
206 | 0 | free (contents); |
207 | |
|
208 | 0 | insn = bfd_get_16 (input_bfd, contents + addr); |
209 | |
|
210 | 0 | x = (insn & 0x200 ? end : start) - addr; |
211 | 0 | if (input_section != symbol_section) |
212 | 0 | x += ((symbol_section->output_section->vma + symbol_section->output_offset) |
213 | 0 | - (input_section->output_section->vma |
214 | 0 | + input_section->output_offset)); |
215 | 0 | x >>= 1; |
216 | 0 | if (x < -128 || x > 127) |
217 | 0 | return bfd_reloc_overflow; |
218 | | |
219 | 0 | x = (insn & ~0xff) | (x & 0xff); |
220 | 0 | bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr); |
221 | |
|
222 | 0 | return bfd_reloc_ok; |
223 | 0 | } |
224 | | |
225 | | /* This function is used for normal relocs. This used to be like the COFF |
226 | | function, and is almost certainly incorrect for other ELF targets. */ |
227 | | |
228 | | static bfd_reloc_status_type |
229 | | sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in, |
230 | | void *data, asection *input_section, bfd *output_bfd, |
231 | | char **error_message ATTRIBUTE_UNUSED) |
232 | 0 | { |
233 | 0 | bfd_vma insn; |
234 | 0 | bfd_vma sym_value; |
235 | 0 | enum elf_sh_reloc_type r_type; |
236 | 0 | bfd_vma addr = reloc_entry->address; |
237 | 0 | bfd_size_type octets = addr * OCTETS_PER_BYTE (abfd, input_section); |
238 | 0 | bfd_byte *hit_data = (bfd_byte *) data + octets; |
239 | |
|
240 | 0 | r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type; |
241 | |
|
242 | 0 | if (output_bfd != NULL) |
243 | 0 | { |
244 | | /* Partial linking--do nothing. */ |
245 | 0 | reloc_entry->address += input_section->output_offset; |
246 | 0 | return bfd_reloc_ok; |
247 | 0 | } |
248 | | |
249 | | /* Almost all relocs have to do with relaxing. If any work must be |
250 | | done for them, it has been done in sh_relax_section. */ |
251 | 0 | if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0) |
252 | 0 | return bfd_reloc_ok; |
253 | | |
254 | 0 | if (symbol_in != NULL |
255 | 0 | && bfd_is_und_section (symbol_in->section)) |
256 | 0 | return bfd_reloc_undefined; |
257 | | |
258 | | /* PR 17512: file: 9891ca98. */ |
259 | 0 | if (octets + bfd_get_reloc_size (reloc_entry->howto) |
260 | 0 | > bfd_get_section_limit_octets (abfd, input_section)) |
261 | 0 | return bfd_reloc_outofrange; |
262 | | |
263 | 0 | if (bfd_is_com_section (symbol_in->section)) |
264 | 0 | sym_value = 0; |
265 | 0 | else |
266 | 0 | sym_value = (symbol_in->value + |
267 | 0 | symbol_in->section->output_section->vma + |
268 | 0 | symbol_in->section->output_offset); |
269 | |
|
270 | 0 | switch (r_type) |
271 | 0 | { |
272 | 0 | case R_SH_DIR32: |
273 | 0 | insn = bfd_get_32 (abfd, hit_data); |
274 | 0 | insn += sym_value + reloc_entry->addend; |
275 | 0 | bfd_put_32 (abfd, insn, hit_data); |
276 | 0 | break; |
277 | 0 | case R_SH_IND12W: |
278 | 0 | insn = bfd_get_16 (abfd, hit_data); |
279 | 0 | sym_value += reloc_entry->addend; |
280 | 0 | sym_value -= (input_section->output_section->vma |
281 | 0 | + input_section->output_offset |
282 | 0 | + addr |
283 | 0 | + 4); |
284 | 0 | sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1; |
285 | 0 | insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff); |
286 | 0 | bfd_put_16 (abfd, insn, hit_data); |
287 | 0 | if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0) |
288 | 0 | return bfd_reloc_overflow; |
289 | 0 | break; |
290 | 0 | default: |
291 | 0 | abort (); |
292 | 0 | break; |
293 | 0 | } |
294 | | |
295 | 0 | return bfd_reloc_ok; |
296 | 0 | } |
297 | | |
298 | | /* This function is used for relocs which are only used for relaxing, |
299 | | which the linker should otherwise ignore. */ |
300 | | |
301 | | static bfd_reloc_status_type |
302 | | sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, |
303 | | asymbol *symbol ATTRIBUTE_UNUSED, |
304 | | void *data ATTRIBUTE_UNUSED, asection *input_section, |
305 | | bfd *output_bfd, |
306 | | char **error_message ATTRIBUTE_UNUSED) |
307 | 44 | { |
308 | 44 | if (output_bfd != NULL) |
309 | 0 | reloc_entry->address += input_section->output_offset; |
310 | 44 | return bfd_reloc_ok; |
311 | 44 | } |
312 | | |
313 | | /* This structure is used to map BFD reloc codes to SH ELF relocs. */ |
314 | | |
315 | | struct elf_reloc_map |
316 | | { |
317 | | bfd_reloc_code_real_type bfd_reloc_val; |
318 | | unsigned char elf_reloc_val; |
319 | | }; |
320 | | |
321 | | /* An array mapping BFD reloc codes to SH ELF relocs. */ |
322 | | |
323 | | static const struct elf_reloc_map sh_reloc_map[] = |
324 | | { |
325 | | { BFD_RELOC_NONE, R_SH_NONE }, |
326 | | { BFD_RELOC_32, R_SH_DIR32 }, |
327 | | { BFD_RELOC_16, R_SH_DIR16 }, |
328 | | { BFD_RELOC_8, R_SH_DIR8 }, |
329 | | { BFD_RELOC_CTOR, R_SH_DIR32 }, |
330 | | { BFD_RELOC_32_PCREL, R_SH_REL32 }, |
331 | | { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN }, |
332 | | { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W }, |
333 | | { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ }, |
334 | | { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL }, |
335 | | { BFD_RELOC_8_PCREL, R_SH_SWITCH8 }, |
336 | | { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 }, |
337 | | { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 }, |
338 | | { BFD_RELOC_SH_USES, R_SH_USES }, |
339 | | { BFD_RELOC_SH_COUNT, R_SH_COUNT }, |
340 | | { BFD_RELOC_SH_ALIGN, R_SH_ALIGN }, |
341 | | { BFD_RELOC_SH_CODE, R_SH_CODE }, |
342 | | { BFD_RELOC_SH_DATA, R_SH_DATA }, |
343 | | { BFD_RELOC_SH_LABEL, R_SH_LABEL }, |
344 | | { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT }, |
345 | | { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY }, |
346 | | { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START }, |
347 | | { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END }, |
348 | | { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 }, |
349 | | { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 }, |
350 | | { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 }, |
351 | | { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 }, |
352 | | { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 }, |
353 | | { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 }, |
354 | | { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 }, |
355 | | { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 }, |
356 | | { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 }, |
357 | | { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 }, |
358 | | { BFD_RELOC_SH_COPY, R_SH_COPY }, |
359 | | { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT }, |
360 | | { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT }, |
361 | | { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE }, |
362 | | { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF }, |
363 | | { BFD_RELOC_SH_GOTPC, R_SH_GOTPC }, |
364 | | { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 }, |
365 | | { BFD_RELOC_SH_GOT20, R_SH_GOT20 }, |
366 | | { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 }, |
367 | | { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC }, |
368 | | { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 }, |
369 | | { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC }, |
370 | | { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 }, |
371 | | { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC }, |
372 | | }; |
373 | | |
374 | | /* Given a BFD reloc code, return the howto structure for the |
375 | | corresponding SH ELF reloc. */ |
376 | | |
377 | | static reloc_howto_type * |
378 | | sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
379 | 0 | { |
380 | 0 | unsigned int i; |
381 | |
|
382 | 0 | for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++) |
383 | 0 | { |
384 | 0 | if (sh_reloc_map[i].bfd_reloc_val == code) |
385 | 0 | return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val; |
386 | 0 | } |
387 | | |
388 | 0 | return NULL; |
389 | 0 | } |
390 | | |
391 | | static reloc_howto_type * |
392 | | sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
393 | 0 | { |
394 | 0 | unsigned int i; |
395 | |
|
396 | 0 | if (vxworks_object_p (abfd)) |
397 | 0 | { |
398 | 0 | for (i = 0; |
399 | 0 | i < (sizeof (sh_vxworks_howto_table) |
400 | 0 | / sizeof (sh_vxworks_howto_table[0])); |
401 | 0 | i++) |
402 | 0 | if (sh_vxworks_howto_table[i].name != NULL |
403 | 0 | && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0) |
404 | 0 | return &sh_vxworks_howto_table[i]; |
405 | 0 | } |
406 | 0 | else |
407 | 0 | { |
408 | 0 | for (i = 0; |
409 | 0 | i < (sizeof (sh_elf_howto_table) |
410 | 0 | / sizeof (sh_elf_howto_table[0])); |
411 | 0 | i++) |
412 | 0 | if (sh_elf_howto_table[i].name != NULL |
413 | 0 | && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0) |
414 | 0 | return &sh_elf_howto_table[i]; |
415 | 0 | } |
416 | | |
417 | 0 | return NULL; |
418 | 0 | } |
419 | | |
420 | | /* Given an ELF reloc, fill in the howto field of a relent. */ |
421 | | |
422 | | static bool |
423 | | sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) |
424 | 833 | { |
425 | 833 | unsigned int r; |
426 | | |
427 | 833 | r = ELF32_R_TYPE (dst->r_info); |
428 | | |
429 | 833 | if (r >= R_SH_FIRST_INVALID_RELOC_6 |
430 | 833 | || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC) |
431 | 833 | || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2) |
432 | 833 | || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3) |
433 | 833 | || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4) |
434 | 833 | || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5)) |
435 | 7 | { |
436 | | /* xgettext:c-format */ |
437 | 7 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
438 | 7 | abfd, r); |
439 | 7 | bfd_set_error (bfd_error_bad_value); |
440 | 7 | return false; |
441 | 7 | } |
442 | | |
443 | 826 | cache_ptr->howto = get_howto_table (abfd) + r; |
444 | 826 | return true; |
445 | 833 | } |
446 | | |
447 | | /* This function handles relaxing for SH ELF. See the corresponding |
448 | | function in coff-sh.c for a description of what this does. FIXME: |
449 | | There is a lot of duplication here between this code and the COFF |
450 | | specific code. The format of relocs and symbols is wound deeply |
451 | | into this code, but it would still be better if the duplication |
452 | | could be eliminated somehow. Note in particular that although both |
453 | | functions use symbols like R_SH_CODE, those symbols have different |
454 | | values; in coff-sh.c they come from include/coff/sh.h, whereas here |
455 | | they come from enum elf_sh_reloc_type in include/elf/sh.h. */ |
456 | | |
457 | | static bool |
458 | | sh_elf_relax_section (bfd *abfd, asection *sec, |
459 | | struct bfd_link_info *link_info, bool *again) |
460 | 0 | { |
461 | 0 | Elf_Internal_Shdr *symtab_hdr; |
462 | 0 | Elf_Internal_Rela *internal_relocs; |
463 | 0 | bool have_code; |
464 | 0 | Elf_Internal_Rela *irel, *irelend; |
465 | 0 | bfd_byte *contents = NULL; |
466 | 0 | Elf_Internal_Sym *isymbuf = NULL; |
467 | |
|
468 | 0 | *again = false; |
469 | |
|
470 | 0 | if (bfd_link_relocatable (link_info) |
471 | 0 | || (sec->flags & SEC_HAS_CONTENTS) == 0 |
472 | 0 | || (sec->flags & SEC_RELOC) == 0 |
473 | 0 | || sec->reloc_count == 0) |
474 | 0 | return true; |
475 | | |
476 | 0 | symtab_hdr = &elf_symtab_hdr (abfd); |
477 | |
|
478 | 0 | internal_relocs = (_bfd_elf_link_read_relocs |
479 | 0 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
480 | 0 | link_info->keep_memory)); |
481 | 0 | if (internal_relocs == NULL) |
482 | 0 | goto error_return; |
483 | | |
484 | 0 | have_code = false; |
485 | |
|
486 | 0 | irelend = internal_relocs + sec->reloc_count; |
487 | 0 | for (irel = internal_relocs; irel < irelend; irel++) |
488 | 0 | { |
489 | 0 | bfd_vma laddr, paddr, symval; |
490 | 0 | unsigned short insn; |
491 | 0 | Elf_Internal_Rela *irelfn, *irelscan, *irelcount; |
492 | 0 | bfd_signed_vma foff; |
493 | |
|
494 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE) |
495 | 0 | have_code = true; |
496 | |
|
497 | 0 | if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES) |
498 | 0 | continue; |
499 | | |
500 | | /* Get the section contents. */ |
501 | 0 | if (contents == NULL) |
502 | 0 | { |
503 | 0 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
504 | 0 | contents = elf_section_data (sec)->this_hdr.contents; |
505 | 0 | else |
506 | 0 | { |
507 | 0 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
508 | 0 | goto error_return; |
509 | 0 | } |
510 | 0 | } |
511 | | |
512 | | /* The r_addend field of the R_SH_USES reloc will point us to |
513 | | the register load. The 4 is because the r_addend field is |
514 | | computed as though it were a jump offset, which are based |
515 | | from 4 bytes after the jump instruction. */ |
516 | 0 | laddr = irel->r_offset + 4 + irel->r_addend; |
517 | 0 | if (laddr >= sec->size) |
518 | 0 | { |
519 | | /* xgettext:c-format */ |
520 | 0 | _bfd_error_handler |
521 | 0 | (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"), |
522 | 0 | abfd, (uint64_t) irel->r_offset); |
523 | 0 | continue; |
524 | 0 | } |
525 | 0 | insn = bfd_get_16 (abfd, contents + laddr); |
526 | | |
527 | | /* If the instruction is not mov.l NN,rN, we don't know what to |
528 | | do. */ |
529 | 0 | if ((insn & 0xf000) != 0xd000) |
530 | 0 | { |
531 | 0 | _bfd_error_handler |
532 | | /* xgettext:c-format */ |
533 | 0 | (_("%pB: %#" PRIx64 ": warning: " |
534 | 0 | "R_SH_USES points to unrecognized insn 0x%x"), |
535 | 0 | abfd, (uint64_t) irel->r_offset, insn); |
536 | 0 | continue; |
537 | 0 | } |
538 | | |
539 | | /* Get the address from which the register is being loaded. The |
540 | | displacement in the mov.l instruction is quadrupled. It is a |
541 | | displacement from four bytes after the movl instruction, but, |
542 | | before adding in the PC address, two least significant bits |
543 | | of the PC are cleared. We assume that the section is aligned |
544 | | on a four byte boundary. */ |
545 | 0 | paddr = insn & 0xff; |
546 | 0 | paddr *= 4; |
547 | 0 | paddr += (laddr + 4) &~ (bfd_vma) 3; |
548 | 0 | if (paddr >= sec->size) |
549 | 0 | { |
550 | 0 | _bfd_error_handler |
551 | | /* xgettext:c-format */ |
552 | 0 | (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"), |
553 | 0 | abfd, (uint64_t) irel->r_offset); |
554 | 0 | continue; |
555 | 0 | } |
556 | | |
557 | | /* Get the reloc for the address from which the register is |
558 | | being loaded. This reloc will tell us which function is |
559 | | actually being called. */ |
560 | 0 | for (irelfn = internal_relocs; irelfn < irelend; irelfn++) |
561 | 0 | if (irelfn->r_offset == paddr |
562 | 0 | && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32) |
563 | 0 | break; |
564 | 0 | if (irelfn >= irelend) |
565 | 0 | { |
566 | 0 | _bfd_error_handler |
567 | | /* xgettext:c-format */ |
568 | 0 | (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"), |
569 | 0 | abfd, (uint64_t) paddr); |
570 | 0 | continue; |
571 | 0 | } |
572 | | |
573 | | /* Read this BFD's symbols if we haven't done so already. */ |
574 | 0 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
575 | 0 | { |
576 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
577 | 0 | if (isymbuf == NULL) |
578 | 0 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
579 | 0 | symtab_hdr->sh_info, 0, |
580 | 0 | NULL, NULL, NULL); |
581 | 0 | if (isymbuf == NULL) |
582 | 0 | goto error_return; |
583 | 0 | } |
584 | | |
585 | | /* Get the value of the symbol referred to by the reloc. */ |
586 | 0 | if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) |
587 | 0 | { |
588 | | /* A local symbol. */ |
589 | 0 | Elf_Internal_Sym *isym; |
590 | |
|
591 | 0 | isym = isymbuf + ELF32_R_SYM (irelfn->r_info); |
592 | 0 | if (isym->st_shndx |
593 | 0 | != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec)) |
594 | 0 | { |
595 | 0 | _bfd_error_handler |
596 | | /* xgettext:c-format */ |
597 | 0 | (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"), |
598 | 0 | abfd, (uint64_t) paddr); |
599 | 0 | continue; |
600 | 0 | } |
601 | | |
602 | 0 | symval = (isym->st_value |
603 | 0 | + sec->output_section->vma |
604 | 0 | + sec->output_offset); |
605 | 0 | } |
606 | 0 | else |
607 | 0 | { |
608 | 0 | unsigned long indx; |
609 | 0 | struct elf_link_hash_entry *h; |
610 | |
|
611 | 0 | indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info; |
612 | 0 | h = elf_sym_hashes (abfd)[indx]; |
613 | 0 | BFD_ASSERT (h != NULL); |
614 | 0 | if (h->root.type != bfd_link_hash_defined |
615 | 0 | && h->root.type != bfd_link_hash_defweak) |
616 | 0 | { |
617 | | /* This appears to be a reference to an undefined |
618 | | symbol. Just ignore it--it will be caught by the |
619 | | regular reloc processing. */ |
620 | 0 | continue; |
621 | 0 | } |
622 | | |
623 | 0 | symval = (h->root.u.def.value |
624 | 0 | + h->root.u.def.section->output_section->vma |
625 | 0 | + h->root.u.def.section->output_offset); |
626 | 0 | } |
627 | | |
628 | 0 | if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace) |
629 | 0 | symval += bfd_get_32 (abfd, contents + paddr); |
630 | 0 | else |
631 | 0 | symval += irelfn->r_addend; |
632 | | |
633 | | /* See if this function call can be shortened. */ |
634 | 0 | foff = (symval |
635 | 0 | - (irel->r_offset |
636 | 0 | + sec->output_section->vma |
637 | 0 | + sec->output_offset |
638 | 0 | + 4)); |
639 | | /* A branch to an address beyond ours might be increased by an |
640 | | .align that doesn't move when bytes behind us are deleted. |
641 | | So, we add some slop in this calculation to allow for |
642 | | that. */ |
643 | 0 | if (foff < -0x1000 || foff >= 0x1000 - 8) |
644 | 0 | { |
645 | | /* After all that work, we can't shorten this function call. */ |
646 | 0 | continue; |
647 | 0 | } |
648 | | |
649 | | /* Shorten the function call. */ |
650 | | |
651 | | /* For simplicity of coding, we are going to modify the section |
652 | | contents, the section relocs, and the BFD symbol table. We |
653 | | must tell the rest of the code not to free up this |
654 | | information. It would be possible to instead create a table |
655 | | of changes which have to be made, as is done in coff-mips.c; |
656 | | that would be more work, but would require less memory when |
657 | | the linker is run. */ |
658 | | |
659 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
660 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
661 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
662 | | |
663 | | /* Replace the jmp/jsr with a bra/bsr. */ |
664 | | |
665 | | /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and |
666 | | replace the jmp/jsr with a bra/bsr. */ |
667 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W); |
668 | | /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) |
669 | | here, but that only checks if the symbol is an external symbol, |
670 | | not if the symbol is in a different section. Besides, we need |
671 | | a consistent meaning for the relocation, so we just assume here that |
672 | | the value of the symbol is not available. */ |
673 | | |
674 | | /* We can't fully resolve this yet, because the external |
675 | | symbol value may be changed by future relaxing. We let |
676 | | the final link phase handle it. */ |
677 | 0 | if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020) |
678 | 0 | bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset); |
679 | 0 | else |
680 | 0 | bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset); |
681 | |
|
682 | 0 | irel->r_addend = -4; |
683 | | |
684 | | /* When we calculated the symbol "value" we had an offset in the |
685 | | DIR32's word in memory (we read and add it above). However, |
686 | | the jsr we create does NOT have this offset encoded, so we |
687 | | have to add it to the addend to preserve it. */ |
688 | 0 | irel->r_addend += bfd_get_32 (abfd, contents + paddr); |
689 | | |
690 | | /* See if there is another R_SH_USES reloc referring to the same |
691 | | register load. */ |
692 | 0 | for (irelscan = internal_relocs; irelscan < irelend; irelscan++) |
693 | 0 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES |
694 | 0 | && laddr == irelscan->r_offset + 4 + irelscan->r_addend) |
695 | 0 | break; |
696 | 0 | if (irelscan < irelend) |
697 | 0 | { |
698 | | /* Some other function call depends upon this register load, |
699 | | and we have not yet converted that function call. |
700 | | Indeed, we may never be able to convert it. There is |
701 | | nothing else we can do at this point. */ |
702 | 0 | continue; |
703 | 0 | } |
704 | | |
705 | | /* Look for a R_SH_COUNT reloc on the location where the |
706 | | function address is stored. Do this before deleting any |
707 | | bytes, to avoid confusion about the address. */ |
708 | 0 | for (irelcount = internal_relocs; irelcount < irelend; irelcount++) |
709 | 0 | if (irelcount->r_offset == paddr |
710 | 0 | && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT) |
711 | 0 | break; |
712 | | |
713 | | /* Delete the register load. */ |
714 | 0 | if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2)) |
715 | 0 | goto error_return; |
716 | | |
717 | | /* That will change things, so, just in case it permits some |
718 | | other function call to come within range, we should relax |
719 | | again. Note that this is not required, and it may be slow. */ |
720 | 0 | *again = true; |
721 | | |
722 | | /* Now check whether we got a COUNT reloc. */ |
723 | 0 | if (irelcount >= irelend) |
724 | 0 | { |
725 | 0 | _bfd_error_handler |
726 | | /* xgettext:c-format */ |
727 | 0 | (_("%pB: %#" PRIx64 ": warning: " |
728 | 0 | "could not find expected COUNT reloc"), |
729 | 0 | abfd, (uint64_t) paddr); |
730 | 0 | continue; |
731 | 0 | } |
732 | | |
733 | | /* The number of uses is stored in the r_addend field. We've |
734 | | just deleted one. */ |
735 | 0 | if (irelcount->r_addend == 0) |
736 | 0 | { |
737 | | /* xgettext:c-format */ |
738 | 0 | _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"), |
739 | 0 | abfd, (uint64_t) paddr); |
740 | 0 | continue; |
741 | 0 | } |
742 | | |
743 | 0 | --irelcount->r_addend; |
744 | | |
745 | | /* If there are no more uses, we can delete the address. Reload |
746 | | the address from irelfn, in case it was changed by the |
747 | | previous call to sh_elf_relax_delete_bytes. */ |
748 | 0 | if (irelcount->r_addend == 0) |
749 | 0 | { |
750 | 0 | if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4)) |
751 | 0 | goto error_return; |
752 | 0 | } |
753 | | |
754 | | /* We've done all we can with that function call. */ |
755 | 0 | } |
756 | | |
757 | | /* Look for load and store instructions that we can align on four |
758 | | byte boundaries. */ |
759 | 0 | if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4 |
760 | 0 | && have_code) |
761 | 0 | { |
762 | 0 | bool swapped; |
763 | | |
764 | | /* Get the section contents. */ |
765 | 0 | if (contents == NULL) |
766 | 0 | { |
767 | 0 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
768 | 0 | contents = elf_section_data (sec)->this_hdr.contents; |
769 | 0 | else |
770 | 0 | { |
771 | 0 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
772 | 0 | goto error_return; |
773 | 0 | } |
774 | 0 | } |
775 | | |
776 | 0 | if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents, |
777 | 0 | &swapped)) |
778 | 0 | goto error_return; |
779 | | |
780 | 0 | if (swapped) |
781 | 0 | { |
782 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
783 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
784 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
785 | 0 | } |
786 | 0 | } |
787 | | |
788 | 0 | if (isymbuf != NULL |
789 | 0 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
790 | 0 | { |
791 | 0 | if (! link_info->keep_memory) |
792 | 0 | free (isymbuf); |
793 | 0 | else |
794 | 0 | { |
795 | | /* Cache the symbols for elf_link_input_bfd. */ |
796 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
797 | 0 | } |
798 | 0 | } |
799 | |
|
800 | 0 | if (contents != NULL |
801 | 0 | && elf_section_data (sec)->this_hdr.contents != contents) |
802 | 0 | { |
803 | 0 | if (! link_info->keep_memory) |
804 | 0 | free (contents); |
805 | 0 | else |
806 | 0 | { |
807 | | /* Cache the section contents for elf_link_input_bfd. */ |
808 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
809 | 0 | } |
810 | 0 | } |
811 | |
|
812 | 0 | if (elf_section_data (sec)->relocs != internal_relocs) |
813 | 0 | free (internal_relocs); |
814 | |
|
815 | 0 | return true; |
816 | | |
817 | 0 | error_return: |
818 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
819 | 0 | free (isymbuf); |
820 | 0 | if (elf_section_data (sec)->this_hdr.contents != contents) |
821 | 0 | free (contents); |
822 | 0 | if (elf_section_data (sec)->relocs != internal_relocs) |
823 | 0 | free (internal_relocs); |
824 | |
|
825 | 0 | return false; |
826 | 0 | } |
827 | | |
828 | | /* Delete some bytes from a section while relaxing. FIXME: There is a |
829 | | lot of duplication between this function and sh_relax_delete_bytes |
830 | | in coff-sh.c. */ |
831 | | |
832 | | static bool |
833 | | sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, |
834 | | int count) |
835 | 0 | { |
836 | 0 | Elf_Internal_Shdr *symtab_hdr; |
837 | 0 | unsigned int sec_shndx; |
838 | 0 | bfd_byte *contents; |
839 | 0 | Elf_Internal_Rela *irel, *irelend; |
840 | 0 | Elf_Internal_Rela *irelalign; |
841 | 0 | bfd_vma toaddr; |
842 | 0 | Elf_Internal_Sym *isymbuf, *isym, *isymend; |
843 | 0 | struct elf_link_hash_entry **sym_hashes; |
844 | 0 | struct elf_link_hash_entry **end_hashes; |
845 | 0 | unsigned int symcount; |
846 | 0 | asection *o; |
847 | |
|
848 | 0 | symtab_hdr = &elf_symtab_hdr (abfd); |
849 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
850 | |
|
851 | 0 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
852 | |
|
853 | 0 | contents = elf_section_data (sec)->this_hdr.contents; |
854 | | |
855 | | /* The deletion must stop at the next ALIGN reloc for an alignment |
856 | | power larger than the number of bytes we are deleting. */ |
857 | |
|
858 | 0 | irelalign = NULL; |
859 | 0 | toaddr = sec->size; |
860 | |
|
861 | 0 | irel = elf_section_data (sec)->relocs; |
862 | 0 | irelend = irel + sec->reloc_count; |
863 | 0 | for (; irel < irelend; irel++) |
864 | 0 | { |
865 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN |
866 | 0 | && irel->r_offset > addr |
867 | 0 | && count < (1 << irel->r_addend)) |
868 | 0 | { |
869 | 0 | irelalign = irel; |
870 | 0 | toaddr = irel->r_offset; |
871 | 0 | break; |
872 | 0 | } |
873 | 0 | } |
874 | | |
875 | | /* Actually delete the bytes. */ |
876 | 0 | memmove (contents + addr, contents + addr + count, |
877 | 0 | (size_t) (toaddr - addr - count)); |
878 | 0 | if (irelalign == NULL) |
879 | 0 | sec->size -= count; |
880 | 0 | else |
881 | 0 | { |
882 | 0 | int i; |
883 | |
|
884 | 0 | #define NOP_OPCODE (0x0009) |
885 | |
|
886 | 0 | BFD_ASSERT ((count & 1) == 0); |
887 | 0 | for (i = 0; i < count; i += 2) |
888 | 0 | bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); |
889 | 0 | } |
890 | | |
891 | | /* Adjust all the relocs. */ |
892 | 0 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
893 | 0 | { |
894 | 0 | bfd_vma nraddr, stop; |
895 | 0 | bfd_vma start = 0; |
896 | 0 | int insn = 0; |
897 | 0 | int off, adjust, oinsn; |
898 | 0 | bfd_signed_vma voff = 0; |
899 | 0 | bool overflow; |
900 | | |
901 | | /* Get the new reloc address. */ |
902 | 0 | nraddr = irel->r_offset; |
903 | 0 | if ((irel->r_offset > addr |
904 | 0 | && irel->r_offset < toaddr) |
905 | 0 | || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN |
906 | 0 | && irel->r_offset == toaddr)) |
907 | 0 | nraddr -= count; |
908 | | |
909 | | /* See if this reloc was for the bytes we have deleted, in which |
910 | | case we no longer care about it. Don't delete relocs which |
911 | | represent addresses, though. */ |
912 | 0 | if (irel->r_offset >= addr |
913 | 0 | && irel->r_offset < addr + count |
914 | 0 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN |
915 | 0 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE |
916 | 0 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA |
917 | 0 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL) |
918 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
919 | 0 | (int) R_SH_NONE); |
920 | | |
921 | | /* If this is a PC relative reloc, see if the range it covers |
922 | | includes the bytes we have deleted. */ |
923 | 0 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
924 | 0 | { |
925 | 0 | default: |
926 | 0 | break; |
927 | | |
928 | 0 | case R_SH_DIR8WPN: |
929 | 0 | case R_SH_IND12W: |
930 | 0 | case R_SH_DIR8WPZ: |
931 | 0 | case R_SH_DIR8WPL: |
932 | 0 | start = irel->r_offset; |
933 | 0 | insn = bfd_get_16 (abfd, contents + nraddr); |
934 | 0 | break; |
935 | 0 | } |
936 | | |
937 | 0 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
938 | 0 | { |
939 | 0 | default: |
940 | 0 | start = stop = addr; |
941 | 0 | break; |
942 | | |
943 | 0 | case R_SH_DIR32: |
944 | | /* If this reloc is against a symbol defined in this |
945 | | section, and the symbol will not be adjusted below, we |
946 | | must check the addend to see it will put the value in |
947 | | range to be adjusted, and hence must be changed. */ |
948 | 0 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
949 | 0 | { |
950 | 0 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
951 | 0 | if (isym->st_shndx == sec_shndx |
952 | 0 | && (isym->st_value <= addr |
953 | 0 | || isym->st_value >= toaddr)) |
954 | 0 | { |
955 | 0 | bfd_vma val; |
956 | |
|
957 | 0 | if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace) |
958 | 0 | { |
959 | 0 | val = bfd_get_32 (abfd, contents + nraddr); |
960 | 0 | val += isym->st_value; |
961 | 0 | if (val > addr && val < toaddr) |
962 | 0 | bfd_put_32 (abfd, val - count, contents + nraddr); |
963 | 0 | } |
964 | 0 | else |
965 | 0 | { |
966 | 0 | val = isym->st_value + irel->r_addend; |
967 | 0 | if (val > addr && val < toaddr) |
968 | 0 | irel->r_addend -= count; |
969 | 0 | } |
970 | 0 | } |
971 | 0 | } |
972 | 0 | start = stop = addr; |
973 | 0 | break; |
974 | | |
975 | 0 | case R_SH_DIR8WPN: |
976 | 0 | off = insn & 0xff; |
977 | 0 | if (off & 0x80) |
978 | 0 | off -= 0x100; |
979 | 0 | stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); |
980 | 0 | break; |
981 | | |
982 | 0 | case R_SH_IND12W: |
983 | 0 | off = insn & 0xfff; |
984 | 0 | if (! off) |
985 | 0 | { |
986 | | /* This has been made by previous relaxation. Since the |
987 | | relocation will be against an external symbol, the |
988 | | final relocation will just do the right thing. */ |
989 | 0 | start = stop = addr; |
990 | 0 | } |
991 | 0 | else |
992 | 0 | { |
993 | 0 | if (off & 0x800) |
994 | 0 | off -= 0x1000; |
995 | 0 | stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); |
996 | | |
997 | | /* The addend will be against the section symbol, thus |
998 | | for adjusting the addend, the relevant start is the |
999 | | start of the section. |
1000 | | N.B. If we want to abandon in-place changes here and |
1001 | | test directly using symbol + addend, we have to take into |
1002 | | account that the addend has already been adjusted by -4. */ |
1003 | 0 | if (stop > addr && stop < toaddr) |
1004 | 0 | irel->r_addend -= count; |
1005 | 0 | } |
1006 | 0 | break; |
1007 | | |
1008 | 0 | case R_SH_DIR8WPZ: |
1009 | 0 | off = insn & 0xff; |
1010 | 0 | stop = start + 4 + off * 2; |
1011 | 0 | break; |
1012 | | |
1013 | 0 | case R_SH_DIR8WPL: |
1014 | 0 | off = insn & 0xff; |
1015 | 0 | stop = (start & ~(bfd_vma) 3) + 4 + off * 4; |
1016 | 0 | break; |
1017 | | |
1018 | 0 | case R_SH_SWITCH8: |
1019 | 0 | case R_SH_SWITCH16: |
1020 | 0 | case R_SH_SWITCH32: |
1021 | | /* These relocs types represent |
1022 | | .word L2-L1 |
1023 | | The r_addend field holds the difference between the reloc |
1024 | | address and L1. That is the start of the reloc, and |
1025 | | adding in the contents gives us the top. We must adjust |
1026 | | both the r_offset field and the section contents. |
1027 | | N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset, |
1028 | | and the elf bfd r_offset is called r_vaddr. */ |
1029 | |
|
1030 | 0 | stop = irel->r_offset; |
1031 | 0 | start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend); |
1032 | |
|
1033 | 0 | if (start > addr |
1034 | 0 | && start < toaddr |
1035 | 0 | && (stop <= addr || stop >= toaddr)) |
1036 | 0 | irel->r_addend += count; |
1037 | 0 | else if (stop > addr |
1038 | 0 | && stop < toaddr |
1039 | 0 | && (start <= addr || start >= toaddr)) |
1040 | 0 | irel->r_addend -= count; |
1041 | |
|
1042 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16) |
1043 | 0 | voff = bfd_get_signed_16 (abfd, contents + nraddr); |
1044 | 0 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8) |
1045 | 0 | voff = bfd_get_8 (abfd, contents + nraddr); |
1046 | 0 | else |
1047 | 0 | voff = bfd_get_signed_32 (abfd, contents + nraddr); |
1048 | 0 | stop = (bfd_vma) ((bfd_signed_vma) start + voff); |
1049 | |
|
1050 | 0 | break; |
1051 | | |
1052 | 0 | case R_SH_USES: |
1053 | 0 | start = irel->r_offset; |
1054 | 0 | stop = (bfd_vma) ((bfd_signed_vma) start |
1055 | 0 | + (long) irel->r_addend |
1056 | 0 | + 4); |
1057 | 0 | break; |
1058 | 0 | } |
1059 | | |
1060 | 0 | if (start > addr |
1061 | 0 | && start < toaddr |
1062 | 0 | && (stop <= addr || stop >= toaddr)) |
1063 | 0 | adjust = count; |
1064 | 0 | else if (stop > addr |
1065 | 0 | && stop < toaddr |
1066 | 0 | && (start <= addr || start >= toaddr)) |
1067 | 0 | adjust = - count; |
1068 | 0 | else |
1069 | 0 | adjust = 0; |
1070 | |
|
1071 | 0 | if (adjust != 0) |
1072 | 0 | { |
1073 | 0 | oinsn = insn; |
1074 | 0 | overflow = false; |
1075 | 0 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
1076 | 0 | { |
1077 | 0 | default: |
1078 | 0 | abort (); |
1079 | 0 | break; |
1080 | | |
1081 | 0 | case R_SH_DIR8WPN: |
1082 | 0 | case R_SH_DIR8WPZ: |
1083 | 0 | insn += adjust / 2; |
1084 | 0 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
1085 | 0 | overflow = true; |
1086 | 0 | bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
1087 | 0 | break; |
1088 | | |
1089 | 0 | case R_SH_IND12W: |
1090 | 0 | insn += adjust / 2; |
1091 | 0 | if ((oinsn & 0xf000) != (insn & 0xf000)) |
1092 | 0 | overflow = true; |
1093 | 0 | bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
1094 | 0 | break; |
1095 | | |
1096 | 0 | case R_SH_DIR8WPL: |
1097 | 0 | BFD_ASSERT (adjust == count || count >= 4); |
1098 | 0 | if (count >= 4) |
1099 | 0 | insn += adjust / 4; |
1100 | 0 | else |
1101 | 0 | { |
1102 | 0 | if ((irel->r_offset & 3) == 0) |
1103 | 0 | ++insn; |
1104 | 0 | } |
1105 | 0 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
1106 | 0 | overflow = true; |
1107 | 0 | bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
1108 | 0 | break; |
1109 | | |
1110 | 0 | case R_SH_SWITCH8: |
1111 | 0 | voff += adjust; |
1112 | 0 | if (voff < 0 || voff >= 0xff) |
1113 | 0 | overflow = true; |
1114 | 0 | bfd_put_8 (abfd, voff, contents + nraddr); |
1115 | 0 | break; |
1116 | | |
1117 | 0 | case R_SH_SWITCH16: |
1118 | 0 | voff += adjust; |
1119 | 0 | if (voff < - 0x8000 || voff >= 0x8000) |
1120 | 0 | overflow = true; |
1121 | 0 | bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr); |
1122 | 0 | break; |
1123 | | |
1124 | 0 | case R_SH_SWITCH32: |
1125 | 0 | voff += adjust; |
1126 | 0 | bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr); |
1127 | 0 | break; |
1128 | | |
1129 | 0 | case R_SH_USES: |
1130 | 0 | irel->r_addend += adjust; |
1131 | 0 | break; |
1132 | 0 | } |
1133 | | |
1134 | 0 | if (overflow) |
1135 | 0 | { |
1136 | 0 | _bfd_error_handler |
1137 | | /* xgettext:c-format */ |
1138 | 0 | (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"), |
1139 | 0 | abfd, (uint64_t) irel->r_offset); |
1140 | 0 | bfd_set_error (bfd_error_bad_value); |
1141 | 0 | return false; |
1142 | 0 | } |
1143 | 0 | } |
1144 | | |
1145 | 0 | irel->r_offset = nraddr; |
1146 | 0 | } |
1147 | | |
1148 | | /* Look through all the other sections. If there contain any IMM32 |
1149 | | relocs against internal symbols which we are not going to adjust |
1150 | | below, we may need to adjust the addends. */ |
1151 | 0 | for (o = abfd->sections; o != NULL; o = o->next) |
1152 | 0 | { |
1153 | 0 | Elf_Internal_Rela *internal_relocs; |
1154 | 0 | Elf_Internal_Rela *irelscan, *irelscanend; |
1155 | 0 | bfd_byte *ocontents; |
1156 | |
|
1157 | 0 | if (o == sec |
1158 | 0 | || (o->flags & SEC_HAS_CONTENTS) == 0 |
1159 | 0 | || (o->flags & SEC_RELOC) == 0 |
1160 | 0 | || o->reloc_count == 0) |
1161 | 0 | continue; |
1162 | | |
1163 | | /* We always cache the relocs. Perhaps, if info->keep_memory is |
1164 | | FALSE, we should free them, if we are permitted to, when we |
1165 | | leave sh_coff_relax_section. */ |
1166 | 0 | internal_relocs = (_bfd_elf_link_read_relocs |
1167 | 0 | (abfd, o, NULL, (Elf_Internal_Rela *) NULL, true)); |
1168 | 0 | if (internal_relocs == NULL) |
1169 | 0 | return false; |
1170 | | |
1171 | 0 | ocontents = NULL; |
1172 | 0 | irelscanend = internal_relocs + o->reloc_count; |
1173 | 0 | for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++) |
1174 | 0 | { |
1175 | | /* Dwarf line numbers use R_SH_SWITCH32 relocs. */ |
1176 | 0 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32) |
1177 | 0 | { |
1178 | 0 | bfd_vma start, stop; |
1179 | 0 | bfd_signed_vma voff; |
1180 | |
|
1181 | 0 | if (ocontents == NULL) |
1182 | 0 | { |
1183 | 0 | if (elf_section_data (o)->this_hdr.contents != NULL) |
1184 | 0 | ocontents = elf_section_data (o)->this_hdr.contents; |
1185 | 0 | else |
1186 | 0 | { |
1187 | | /* We always cache the section contents. |
1188 | | Perhaps, if info->keep_memory is FALSE, we |
1189 | | should free them, if we are permitted to, |
1190 | | when we leave sh_coff_relax_section. */ |
1191 | 0 | if (!bfd_malloc_and_get_section (abfd, o, &ocontents)) |
1192 | 0 | { |
1193 | 0 | free (ocontents); |
1194 | 0 | return false; |
1195 | 0 | } |
1196 | | |
1197 | 0 | elf_section_data (o)->this_hdr.contents = ocontents; |
1198 | 0 | } |
1199 | 0 | } |
1200 | | |
1201 | 0 | stop = irelscan->r_offset; |
1202 | 0 | start |
1203 | 0 | = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend); |
1204 | | |
1205 | | /* STOP is in a different section, so it won't change. */ |
1206 | 0 | if (start > addr && start < toaddr) |
1207 | 0 | irelscan->r_addend += count; |
1208 | |
|
1209 | 0 | voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset); |
1210 | 0 | stop = (bfd_vma) ((bfd_signed_vma) start + voff); |
1211 | |
|
1212 | 0 | if (start > addr |
1213 | 0 | && start < toaddr |
1214 | 0 | && (stop <= addr || stop >= toaddr)) |
1215 | 0 | bfd_put_signed_32 (abfd, (bfd_vma) voff + count, |
1216 | 0 | ocontents + irelscan->r_offset); |
1217 | 0 | else if (stop > addr |
1218 | 0 | && stop < toaddr |
1219 | 0 | && (start <= addr || start >= toaddr)) |
1220 | 0 | bfd_put_signed_32 (abfd, (bfd_vma) voff - count, |
1221 | 0 | ocontents + irelscan->r_offset); |
1222 | 0 | } |
1223 | | |
1224 | 0 | if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32) |
1225 | 0 | continue; |
1226 | | |
1227 | 0 | if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info) |
1228 | 0 | continue; |
1229 | | |
1230 | | |
1231 | 0 | isym = isymbuf + ELF32_R_SYM (irelscan->r_info); |
1232 | 0 | if (isym->st_shndx == sec_shndx |
1233 | 0 | && (isym->st_value <= addr |
1234 | 0 | || isym->st_value >= toaddr)) |
1235 | 0 | { |
1236 | 0 | bfd_vma val; |
1237 | |
|
1238 | 0 | if (ocontents == NULL) |
1239 | 0 | { |
1240 | 0 | if (elf_section_data (o)->this_hdr.contents != NULL) |
1241 | 0 | ocontents = elf_section_data (o)->this_hdr.contents; |
1242 | 0 | else |
1243 | 0 | { |
1244 | | /* We always cache the section contents. |
1245 | | Perhaps, if info->keep_memory is FALSE, we |
1246 | | should free them, if we are permitted to, |
1247 | | when we leave sh_coff_relax_section. */ |
1248 | 0 | if (!bfd_malloc_and_get_section (abfd, o, &ocontents)) |
1249 | 0 | { |
1250 | 0 | free (ocontents); |
1251 | 0 | return false; |
1252 | 0 | } |
1253 | | |
1254 | 0 | elf_section_data (o)->this_hdr.contents = ocontents; |
1255 | 0 | } |
1256 | 0 | } |
1257 | | |
1258 | 0 | val = bfd_get_32 (abfd, ocontents + irelscan->r_offset); |
1259 | 0 | val += isym->st_value; |
1260 | 0 | if (val > addr && val < toaddr) |
1261 | 0 | bfd_put_32 (abfd, val - count, |
1262 | 0 | ocontents + irelscan->r_offset); |
1263 | 0 | } |
1264 | 0 | } |
1265 | 0 | } |
1266 | | |
1267 | | /* Adjust the local symbols defined in this section. */ |
1268 | 0 | isymend = isymbuf + symtab_hdr->sh_info; |
1269 | 0 | for (isym = isymbuf; isym < isymend; isym++) |
1270 | 0 | { |
1271 | 0 | if (isym->st_shndx == sec_shndx |
1272 | 0 | && isym->st_value > addr |
1273 | 0 | && isym->st_value < toaddr) |
1274 | 0 | isym->st_value -= count; |
1275 | 0 | } |
1276 | | |
1277 | | /* Now adjust the global symbols defined in this section. */ |
1278 | 0 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
1279 | 0 | - symtab_hdr->sh_info); |
1280 | 0 | sym_hashes = elf_sym_hashes (abfd); |
1281 | 0 | end_hashes = sym_hashes + symcount; |
1282 | 0 | for (; sym_hashes < end_hashes; sym_hashes++) |
1283 | 0 | { |
1284 | 0 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
1285 | 0 | if ((sym_hash->root.type == bfd_link_hash_defined |
1286 | 0 | || sym_hash->root.type == bfd_link_hash_defweak) |
1287 | 0 | && sym_hash->root.u.def.section == sec |
1288 | 0 | && sym_hash->root.u.def.value > addr |
1289 | 0 | && sym_hash->root.u.def.value < toaddr) |
1290 | 0 | { |
1291 | 0 | sym_hash->root.u.def.value -= count; |
1292 | 0 | } |
1293 | 0 | } |
1294 | | |
1295 | | /* See if we can move the ALIGN reloc forward. We have adjusted |
1296 | | r_offset for it already. */ |
1297 | 0 | if (irelalign != NULL) |
1298 | 0 | { |
1299 | 0 | bfd_vma alignto, alignaddr; |
1300 | |
|
1301 | 0 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); |
1302 | 0 | alignaddr = BFD_ALIGN (irelalign->r_offset, |
1303 | 0 | 1 << irelalign->r_addend); |
1304 | 0 | if (alignto != alignaddr) |
1305 | 0 | { |
1306 | | /* Tail recursion. */ |
1307 | 0 | return sh_elf_relax_delete_bytes (abfd, sec, alignaddr, |
1308 | 0 | (int) (alignto - alignaddr)); |
1309 | 0 | } |
1310 | 0 | } |
1311 | | |
1312 | 0 | return true; |
1313 | 0 | } |
1314 | | |
1315 | | /* Look for loads and stores which we can align to four byte |
1316 | | boundaries. This is like sh_align_loads in coff-sh.c. */ |
1317 | | |
1318 | | static bool |
1319 | | sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, |
1320 | | Elf_Internal_Rela *internal_relocs, |
1321 | | bfd_byte *contents ATTRIBUTE_UNUSED, |
1322 | | bool *pswapped) |
1323 | 0 | { |
1324 | 0 | Elf_Internal_Rela *irel, *irelend; |
1325 | 0 | bfd_vma *labels = NULL; |
1326 | 0 | bfd_vma *label, *label_end; |
1327 | 0 | bfd_size_type amt; |
1328 | |
|
1329 | 0 | *pswapped = false; |
1330 | |
|
1331 | 0 | irelend = internal_relocs + sec->reloc_count; |
1332 | | |
1333 | | /* Get all the addresses with labels on them. */ |
1334 | 0 | amt = sec->reloc_count; |
1335 | 0 | amt *= sizeof (bfd_vma); |
1336 | 0 | labels = (bfd_vma *) bfd_malloc (amt); |
1337 | 0 | if (labels == NULL) |
1338 | 0 | goto error_return; |
1339 | 0 | label_end = labels; |
1340 | 0 | for (irel = internal_relocs; irel < irelend; irel++) |
1341 | 0 | { |
1342 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL) |
1343 | 0 | { |
1344 | 0 | *label_end = irel->r_offset; |
1345 | 0 | ++label_end; |
1346 | 0 | } |
1347 | 0 | } |
1348 | | |
1349 | | /* Note that the assembler currently always outputs relocs in |
1350 | | address order. If that ever changes, this code will need to sort |
1351 | | the label values and the relocs. */ |
1352 | |
|
1353 | 0 | label = labels; |
1354 | |
|
1355 | 0 | for (irel = internal_relocs; irel < irelend; irel++) |
1356 | 0 | { |
1357 | 0 | bfd_vma start, stop; |
1358 | |
|
1359 | 0 | if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE) |
1360 | 0 | continue; |
1361 | | |
1362 | 0 | start = irel->r_offset; |
1363 | |
|
1364 | 0 | for (irel++; irel < irelend; irel++) |
1365 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA) |
1366 | 0 | break; |
1367 | 0 | if (irel < irelend) |
1368 | 0 | stop = irel->r_offset; |
1369 | 0 | else |
1370 | 0 | stop = sec->size; |
1371 | |
|
1372 | 0 | if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns, |
1373 | 0 | internal_relocs, &label, |
1374 | 0 | label_end, start, stop, pswapped)) |
1375 | 0 | goto error_return; |
1376 | 0 | } |
1377 | | |
1378 | 0 | free (labels); |
1379 | |
|
1380 | 0 | return true; |
1381 | | |
1382 | 0 | error_return: |
1383 | 0 | free (labels); |
1384 | 0 | return false; |
1385 | 0 | } |
1386 | | |
1387 | | /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */ |
1388 | | |
1389 | | static bool |
1390 | | sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs, |
1391 | | bfd_byte *contents, bfd_vma addr) |
1392 | 0 | { |
1393 | 0 | Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs; |
1394 | 0 | unsigned short i1, i2; |
1395 | 0 | Elf_Internal_Rela *irel, *irelend; |
1396 | | |
1397 | | /* Swap the instructions themselves. */ |
1398 | 0 | i1 = bfd_get_16 (abfd, contents + addr); |
1399 | 0 | i2 = bfd_get_16 (abfd, contents + addr + 2); |
1400 | 0 | bfd_put_16 (abfd, (bfd_vma) i2, contents + addr); |
1401 | 0 | bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2); |
1402 | | |
1403 | | /* Adjust all reloc addresses. */ |
1404 | 0 | irelend = internal_relocs + sec->reloc_count; |
1405 | 0 | for (irel = internal_relocs; irel < irelend; irel++) |
1406 | 0 | { |
1407 | 0 | enum elf_sh_reloc_type type; |
1408 | 0 | int add; |
1409 | | |
1410 | | /* There are a few special types of relocs that we don't want to |
1411 | | adjust. These relocs do not apply to the instruction itself, |
1412 | | but are only associated with the address. */ |
1413 | 0 | type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info); |
1414 | 0 | if (type == R_SH_ALIGN |
1415 | 0 | || type == R_SH_CODE |
1416 | 0 | || type == R_SH_DATA |
1417 | 0 | || type == R_SH_LABEL) |
1418 | 0 | continue; |
1419 | | |
1420 | | /* If an R_SH_USES reloc points to one of the addresses being |
1421 | | swapped, we must adjust it. It would be incorrect to do this |
1422 | | for a jump, though, since we want to execute both |
1423 | | instructions after the jump. (We have avoided swapping |
1424 | | around a label, so the jump will not wind up executing an |
1425 | | instruction it shouldn't). */ |
1426 | 0 | if (type == R_SH_USES) |
1427 | 0 | { |
1428 | 0 | bfd_vma off; |
1429 | |
|
1430 | 0 | off = irel->r_offset + 4 + irel->r_addend; |
1431 | 0 | if (off == addr) |
1432 | 0 | irel->r_addend += 2; |
1433 | 0 | else if (off == addr + 2) |
1434 | 0 | irel->r_addend -= 2; |
1435 | 0 | } |
1436 | |
|
1437 | 0 | if (irel->r_offset == addr) |
1438 | 0 | { |
1439 | 0 | irel->r_offset += 2; |
1440 | 0 | add = -2; |
1441 | 0 | } |
1442 | 0 | else if (irel->r_offset == addr + 2) |
1443 | 0 | { |
1444 | 0 | irel->r_offset -= 2; |
1445 | 0 | add = 2; |
1446 | 0 | } |
1447 | 0 | else |
1448 | 0 | add = 0; |
1449 | |
|
1450 | 0 | if (add != 0) |
1451 | 0 | { |
1452 | 0 | bfd_byte *loc; |
1453 | 0 | unsigned short insn, oinsn; |
1454 | 0 | bool overflow; |
1455 | |
|
1456 | 0 | loc = contents + irel->r_offset; |
1457 | 0 | overflow = false; |
1458 | 0 | switch (type) |
1459 | 0 | { |
1460 | 0 | default: |
1461 | 0 | break; |
1462 | | |
1463 | 0 | case R_SH_DIR8WPN: |
1464 | 0 | case R_SH_DIR8WPZ: |
1465 | 0 | insn = bfd_get_16 (abfd, loc); |
1466 | 0 | oinsn = insn; |
1467 | 0 | insn += add / 2; |
1468 | 0 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
1469 | 0 | overflow = true; |
1470 | 0 | bfd_put_16 (abfd, (bfd_vma) insn, loc); |
1471 | 0 | break; |
1472 | | |
1473 | 0 | case R_SH_IND12W: |
1474 | 0 | insn = bfd_get_16 (abfd, loc); |
1475 | 0 | oinsn = insn; |
1476 | 0 | insn += add / 2; |
1477 | 0 | if ((oinsn & 0xf000) != (insn & 0xf000)) |
1478 | 0 | overflow = true; |
1479 | 0 | bfd_put_16 (abfd, (bfd_vma) insn, loc); |
1480 | 0 | break; |
1481 | | |
1482 | 0 | case R_SH_DIR8WPL: |
1483 | | /* This reloc ignores the least significant 3 bits of |
1484 | | the program counter before adding in the offset. |
1485 | | This means that if ADDR is at an even address, the |
1486 | | swap will not affect the offset. If ADDR is an at an |
1487 | | odd address, then the instruction will be crossing a |
1488 | | four byte boundary, and must be adjusted. */ |
1489 | 0 | if ((addr & 3) != 0) |
1490 | 0 | { |
1491 | 0 | insn = bfd_get_16 (abfd, loc); |
1492 | 0 | oinsn = insn; |
1493 | 0 | insn += add / 2; |
1494 | 0 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
1495 | 0 | overflow = true; |
1496 | 0 | bfd_put_16 (abfd, (bfd_vma) insn, loc); |
1497 | 0 | } |
1498 | |
|
1499 | 0 | break; |
1500 | 0 | } |
1501 | | |
1502 | 0 | if (overflow) |
1503 | 0 | { |
1504 | 0 | _bfd_error_handler |
1505 | | /* xgettext:c-format */ |
1506 | 0 | (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"), |
1507 | 0 | abfd, (uint64_t) irel->r_offset); |
1508 | 0 | bfd_set_error (bfd_error_bad_value); |
1509 | 0 | return false; |
1510 | 0 | } |
1511 | 0 | } |
1512 | 0 | } |
1513 | | |
1514 | 0 | return true; |
1515 | 0 | } |
1516 | | |
1517 | | /* Describes one of the various PLT styles. */ |
1518 | | |
1519 | | struct elf_sh_plt_info |
1520 | | { |
1521 | | /* The template for the first PLT entry, or NULL if there is no special |
1522 | | first entry. */ |
1523 | | const bfd_byte *plt0_entry; |
1524 | | |
1525 | | /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */ |
1526 | | bfd_vma plt0_entry_size; |
1527 | | |
1528 | | /* Index I is the offset into PLT0_ENTRY of a pointer to |
1529 | | _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE |
1530 | | if there is no such pointer. */ |
1531 | | bfd_vma plt0_got_fields[3]; |
1532 | | |
1533 | | /* The template for a symbol's PLT entry. */ |
1534 | | const bfd_byte *symbol_entry; |
1535 | | |
1536 | | /* The size of SYMBOL_ENTRY in bytes. */ |
1537 | | bfd_vma symbol_entry_size; |
1538 | | |
1539 | | /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used |
1540 | | on all targets. The comments by each member indicate the value |
1541 | | that the field must hold. */ |
1542 | | struct { |
1543 | | bfd_vma got_entry; /* the address of the symbol's .got.plt entry */ |
1544 | | bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */ |
1545 | | bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */ |
1546 | | bool got20; /* TRUE if got_entry points to a movi20 instruction |
1547 | | (instead of a constant pool entry). */ |
1548 | | } symbol_fields; |
1549 | | |
1550 | | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */ |
1551 | | bfd_vma symbol_resolve_offset; |
1552 | | |
1553 | | /* A different PLT layout which can be used for the first |
1554 | | MAX_SHORT_PLT entries. It must share the same plt0. NULL in |
1555 | | other cases. */ |
1556 | | const struct elf_sh_plt_info *short_plt; |
1557 | | }; |
1558 | | |
1559 | | /* The size in bytes of an entry in the procedure linkage table. */ |
1560 | | |
1561 | | #define ELF_PLT_ENTRY_SIZE 28 |
1562 | | |
1563 | | /* First entry in an absolute procedure linkage table look like this. */ |
1564 | | |
1565 | | /* Note - this code has been "optimised" not to use r2. r2 is used by |
1566 | | GCC to return the address of large structures, so it should not be |
1567 | | corrupted here. This does mean however, that this PLT does not conform |
1568 | | to the SH PIC ABI. That spec says that r0 contains the type of the PLT |
1569 | | and r2 contains the GOT id. This version stores the GOT id in r0 and |
1570 | | ignores the type. Loaders can easily detect this difference however, |
1571 | | since the type will always be 0 or 8, and the GOT ids will always be |
1572 | | greater than or equal to 12. */ |
1573 | | static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] = |
1574 | | { |
1575 | | 0xd0, 0x05, /* mov.l 2f,r0 */ |
1576 | | 0x60, 0x02, /* mov.l @r0,r0 */ |
1577 | | 0x2f, 0x06, /* mov.l r0,@-r15 */ |
1578 | | 0xd0, 0x03, /* mov.l 1f,r0 */ |
1579 | | 0x60, 0x02, /* mov.l @r0,r0 */ |
1580 | | 0x40, 0x2b, /* jmp @r0 */ |
1581 | | 0x60, 0xf6, /* mov.l @r15+,r0 */ |
1582 | | 0x00, 0x09, /* nop */ |
1583 | | 0x00, 0x09, /* nop */ |
1584 | | 0x00, 0x09, /* nop */ |
1585 | | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
1586 | | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
1587 | | }; |
1588 | | |
1589 | | static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] = |
1590 | | { |
1591 | | 0x05, 0xd0, /* mov.l 2f,r0 */ |
1592 | | 0x02, 0x60, /* mov.l @r0,r0 */ |
1593 | | 0x06, 0x2f, /* mov.l r0,@-r15 */ |
1594 | | 0x03, 0xd0, /* mov.l 1f,r0 */ |
1595 | | 0x02, 0x60, /* mov.l @r0,r0 */ |
1596 | | 0x2b, 0x40, /* jmp @r0 */ |
1597 | | 0xf6, 0x60, /* mov.l @r15+,r0 */ |
1598 | | 0x09, 0x00, /* nop */ |
1599 | | 0x09, 0x00, /* nop */ |
1600 | | 0x09, 0x00, /* nop */ |
1601 | | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
1602 | | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
1603 | | }; |
1604 | | |
1605 | | /* Sebsequent entries in an absolute procedure linkage table look like |
1606 | | this. */ |
1607 | | |
1608 | | static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] = |
1609 | | { |
1610 | | 0xd0, 0x04, /* mov.l 1f,r0 */ |
1611 | | 0x60, 0x02, /* mov.l @(r0,r12),r0 */ |
1612 | | 0xd1, 0x02, /* mov.l 0f,r1 */ |
1613 | | 0x40, 0x2b, /* jmp @r0 */ |
1614 | | 0x60, 0x13, /* mov r1,r0 */ |
1615 | | 0xd1, 0x03, /* mov.l 2f,r1 */ |
1616 | | 0x40, 0x2b, /* jmp @r0 */ |
1617 | | 0x00, 0x09, /* nop */ |
1618 | | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
1619 | | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
1620 | | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
1621 | | }; |
1622 | | |
1623 | | static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] = |
1624 | | { |
1625 | | 0x04, 0xd0, /* mov.l 1f,r0 */ |
1626 | | 0x02, 0x60, /* mov.l @r0,r0 */ |
1627 | | 0x02, 0xd1, /* mov.l 0f,r1 */ |
1628 | | 0x2b, 0x40, /* jmp @r0 */ |
1629 | | 0x13, 0x60, /* mov r1,r0 */ |
1630 | | 0x03, 0xd1, /* mov.l 2f,r1 */ |
1631 | | 0x2b, 0x40, /* jmp @r0 */ |
1632 | | 0x09, 0x00, /* nop */ |
1633 | | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
1634 | | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
1635 | | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
1636 | | }; |
1637 | | |
1638 | | /* Entries in a PIC procedure linkage table look like this. */ |
1639 | | |
1640 | | static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] = |
1641 | | { |
1642 | | 0xd0, 0x04, /* mov.l 1f,r0 */ |
1643 | | 0x00, 0xce, /* mov.l @(r0,r12),r0 */ |
1644 | | 0x40, 0x2b, /* jmp @r0 */ |
1645 | | 0x00, 0x09, /* nop */ |
1646 | | 0x50, 0xc2, /* mov.l @(8,r12),r0 */ |
1647 | | 0xd1, 0x03, /* mov.l 2f,r1 */ |
1648 | | 0x40, 0x2b, /* jmp @r0 */ |
1649 | | 0x50, 0xc1, /* mov.l @(4,r12),r0 */ |
1650 | | 0x00, 0x09, /* nop */ |
1651 | | 0x00, 0x09, /* nop */ |
1652 | | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
1653 | | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
1654 | | }; |
1655 | | |
1656 | | static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] = |
1657 | | { |
1658 | | 0x04, 0xd0, /* mov.l 1f,r0 */ |
1659 | | 0xce, 0x00, /* mov.l @(r0,r12),r0 */ |
1660 | | 0x2b, 0x40, /* jmp @r0 */ |
1661 | | 0x09, 0x00, /* nop */ |
1662 | | 0xc2, 0x50, /* mov.l @(8,r12),r0 */ |
1663 | | 0x03, 0xd1, /* mov.l 2f,r1 */ |
1664 | | 0x2b, 0x40, /* jmp @r0 */ |
1665 | | 0xc1, 0x50, /* mov.l @(4,r12),r0 */ |
1666 | | 0x09, 0x00, /* nop */ |
1667 | | 0x09, 0x00, /* nop */ |
1668 | | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
1669 | | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
1670 | | }; |
1671 | | |
1672 | | static const struct elf_sh_plt_info elf_sh_plts[2][2] = { |
1673 | | { |
1674 | | { |
1675 | | /* Big-endian non-PIC. */ |
1676 | | elf_sh_plt0_entry_be, |
1677 | | ELF_PLT_ENTRY_SIZE, |
1678 | | { MINUS_ONE, 24, 20 }, |
1679 | | elf_sh_plt_entry_be, |
1680 | | ELF_PLT_ENTRY_SIZE, |
1681 | | { 20, 16, 24, false }, |
1682 | | 8, |
1683 | | NULL |
1684 | | }, |
1685 | | { |
1686 | | /* Little-endian non-PIC. */ |
1687 | | elf_sh_plt0_entry_le, |
1688 | | ELF_PLT_ENTRY_SIZE, |
1689 | | { MINUS_ONE, 24, 20 }, |
1690 | | elf_sh_plt_entry_le, |
1691 | | ELF_PLT_ENTRY_SIZE, |
1692 | | { 20, 16, 24, false }, |
1693 | | 8, |
1694 | | NULL |
1695 | | }, |
1696 | | }, |
1697 | | { |
1698 | | { |
1699 | | /* Big-endian PIC. */ |
1700 | | elf_sh_plt0_entry_be, |
1701 | | ELF_PLT_ENTRY_SIZE, |
1702 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1703 | | elf_sh_pic_plt_entry_be, |
1704 | | ELF_PLT_ENTRY_SIZE, |
1705 | | { 20, MINUS_ONE, 24, false }, |
1706 | | 8, |
1707 | | NULL |
1708 | | }, |
1709 | | { |
1710 | | /* Little-endian PIC. */ |
1711 | | elf_sh_plt0_entry_le, |
1712 | | ELF_PLT_ENTRY_SIZE, |
1713 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1714 | | elf_sh_pic_plt_entry_le, |
1715 | | ELF_PLT_ENTRY_SIZE, |
1716 | | { 20, MINUS_ONE, 24, false }, |
1717 | | 8, |
1718 | | NULL |
1719 | | }, |
1720 | | } |
1721 | | }; |
1722 | | |
1723 | | #define VXWORKS_PLT_HEADER_SIZE 12 |
1724 | | #define VXWORKS_PLT_ENTRY_SIZE 24 |
1725 | | |
1726 | | static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] = |
1727 | | { |
1728 | | 0xd1, 0x01, /* mov.l @(8,pc),r1 */ |
1729 | | 0x61, 0x12, /* mov.l @r1,r1 */ |
1730 | | 0x41, 0x2b, /* jmp @r1 */ |
1731 | | 0x00, 0x09, /* nop */ |
1732 | | 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */ |
1733 | | }; |
1734 | | |
1735 | | static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] = |
1736 | | { |
1737 | | 0x01, 0xd1, /* mov.l @(8,pc),r1 */ |
1738 | | 0x12, 0x61, /* mov.l @r1,r1 */ |
1739 | | 0x2b, 0x41, /* jmp @r1 */ |
1740 | | 0x09, 0x00, /* nop */ |
1741 | | 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */ |
1742 | | }; |
1743 | | |
1744 | | static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] = |
1745 | | { |
1746 | | 0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
1747 | | 0x60, 0x02, /* mov.l @r0,r0 */ |
1748 | | 0x40, 0x2b, /* jmp @r0 */ |
1749 | | 0x00, 0x09, /* nop */ |
1750 | | 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */ |
1751 | | 0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
1752 | | 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */ |
1753 | | 0x00, 0x09, /* nop */ |
1754 | | 0x00, 0x09, /* nop */ |
1755 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1756 | | }; |
1757 | | |
1758 | | static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] = |
1759 | | { |
1760 | | 0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
1761 | | 0x02, 0x60, /* mov.l @r0,r0 */ |
1762 | | 0x2b, 0x40, /* jmp @r0 */ |
1763 | | 0x09, 0x00, /* nop */ |
1764 | | 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */ |
1765 | | 0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
1766 | | 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */ |
1767 | | 0x09, 0x00, /* nop */ |
1768 | | 0x09, 0x00, /* nop */ |
1769 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1770 | | }; |
1771 | | |
1772 | | static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] = |
1773 | | { |
1774 | | 0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
1775 | | 0x00, 0xce, /* mov.l @(r0,r12),r0 */ |
1776 | | 0x40, 0x2b, /* jmp @r0 */ |
1777 | | 0x00, 0x09, /* nop */ |
1778 | | 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */ |
1779 | | 0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
1780 | | 0x51, 0xc2, /* mov.l @(8,r12),r1 */ |
1781 | | 0x41, 0x2b, /* jmp @r1 */ |
1782 | | 0x00, 0x09, /* nop */ |
1783 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1784 | | }; |
1785 | | |
1786 | | static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] = |
1787 | | { |
1788 | | 0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
1789 | | 0xce, 0x00, /* mov.l @(r0,r12),r0 */ |
1790 | | 0x2b, 0x40, /* jmp @r0 */ |
1791 | | 0x09, 0x00, /* nop */ |
1792 | | 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */ |
1793 | | 0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
1794 | | 0xc2, 0x51, /* mov.l @(8,r12),r1 */ |
1795 | | 0x2b, 0x41, /* jmp @r1 */ |
1796 | | 0x09, 0x00, /* nop */ |
1797 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1798 | | }; |
1799 | | |
1800 | | static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = { |
1801 | | { |
1802 | | { |
1803 | | /* Big-endian non-PIC. */ |
1804 | | vxworks_sh_plt0_entry_be, |
1805 | | VXWORKS_PLT_HEADER_SIZE, |
1806 | | { MINUS_ONE, MINUS_ONE, 8 }, |
1807 | | vxworks_sh_plt_entry_be, |
1808 | | VXWORKS_PLT_ENTRY_SIZE, |
1809 | | { 8, 14, 20, false }, |
1810 | | 12, |
1811 | | NULL |
1812 | | }, |
1813 | | { |
1814 | | /* Little-endian non-PIC. */ |
1815 | | vxworks_sh_plt0_entry_le, |
1816 | | VXWORKS_PLT_HEADER_SIZE, |
1817 | | { MINUS_ONE, MINUS_ONE, 8 }, |
1818 | | vxworks_sh_plt_entry_le, |
1819 | | VXWORKS_PLT_ENTRY_SIZE, |
1820 | | { 8, 14, 20, false }, |
1821 | | 12, |
1822 | | NULL |
1823 | | }, |
1824 | | }, |
1825 | | { |
1826 | | { |
1827 | | /* Big-endian PIC. */ |
1828 | | NULL, |
1829 | | 0, |
1830 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1831 | | vxworks_sh_pic_plt_entry_be, |
1832 | | VXWORKS_PLT_ENTRY_SIZE, |
1833 | | { 8, MINUS_ONE, 20, false }, |
1834 | | 12, |
1835 | | NULL |
1836 | | }, |
1837 | | { |
1838 | | /* Little-endian PIC. */ |
1839 | | NULL, |
1840 | | 0, |
1841 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1842 | | vxworks_sh_pic_plt_entry_le, |
1843 | | VXWORKS_PLT_ENTRY_SIZE, |
1844 | | { 8, MINUS_ONE, 20, false }, |
1845 | | 12, |
1846 | | NULL |
1847 | | }, |
1848 | | } |
1849 | | }; |
1850 | | |
1851 | | /* FDPIC PLT entries. Two unimplemented optimizations for lazy |
1852 | | binding are to omit the lazy binding stub when linking with -z now |
1853 | | and to move lazy binding stubs into a separate region for better |
1854 | | cache behavior. */ |
1855 | | |
1856 | | #define FDPIC_PLT_ENTRY_SIZE 28 |
1857 | | #define FDPIC_PLT_LAZY_OFFSET 20 |
1858 | | |
1859 | | /* FIXME: The lazy binding stub requires a plt0 - which may need to be |
1860 | | duplicated if it is out of range, or which can be inlined. So |
1861 | | right now it is always inlined, which wastes a word per stub. It |
1862 | | might be easier to handle the duplication if we put the lazy |
1863 | | stubs separately. */ |
1864 | | |
1865 | | static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] = |
1866 | | { |
1867 | | 0xd0, 0x02, /* mov.l @(12,pc),r0 */ |
1868 | | 0x01, 0xce, /* mov.l @(r0,r12),r1 */ |
1869 | | 0x70, 0x04, /* add #4, r0 */ |
1870 | | 0x41, 0x2b, /* jmp @r1 */ |
1871 | | 0x0c, 0xce, /* mov.l @(r0,r12),r12 */ |
1872 | | 0x00, 0x09, /* nop */ |
1873 | | 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */ |
1874 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1875 | | 0x60, 0xc2, /* mov.l @r12,r0 */ |
1876 | | 0x40, 0x2b, /* jmp @r0 */ |
1877 | | 0x53, 0xc1, /* mov.l @(4,r12),r3 */ |
1878 | | 0x00, 0x09, /* nop */ |
1879 | | }; |
1880 | | |
1881 | | static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] = |
1882 | | { |
1883 | | 0x02, 0xd0, /* mov.l @(12,pc),r0 */ |
1884 | | 0xce, 0x01, /* mov.l @(r0,r12),r1 */ |
1885 | | 0x04, 0x70, /* add #4, r0 */ |
1886 | | 0x2b, 0x41, /* jmp @r1 */ |
1887 | | 0xce, 0x0c, /* mov.l @(r0,r12),r12 */ |
1888 | | 0x09, 0x00, /* nop */ |
1889 | | 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */ |
1890 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1891 | | 0xc2, 0x60, /* mov.l @r12,r0 */ |
1892 | | 0x2b, 0x40, /* jmp @r0 */ |
1893 | | 0xc1, 0x53, /* mov.l @(4,r12),r3 */ |
1894 | | 0x09, 0x00, /* nop */ |
1895 | | }; |
1896 | | |
1897 | | static const struct elf_sh_plt_info fdpic_sh_plts[2] = { |
1898 | | { |
1899 | | /* Big-endian PIC. */ |
1900 | | NULL, |
1901 | | 0, |
1902 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1903 | | fdpic_sh_plt_entry_be, |
1904 | | FDPIC_PLT_ENTRY_SIZE, |
1905 | | { 12, MINUS_ONE, 16, false }, |
1906 | | FDPIC_PLT_LAZY_OFFSET, |
1907 | | NULL |
1908 | | }, |
1909 | | { |
1910 | | /* Little-endian PIC. */ |
1911 | | NULL, |
1912 | | 0, |
1913 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1914 | | fdpic_sh_plt_entry_le, |
1915 | | FDPIC_PLT_ENTRY_SIZE, |
1916 | | { 12, MINUS_ONE, 16, false }, |
1917 | | FDPIC_PLT_LAZY_OFFSET, |
1918 | | NULL |
1919 | | }, |
1920 | | }; |
1921 | | |
1922 | | /* On SH2A, we can use the movi20 instruction to generate shorter PLT |
1923 | | entries for the first 64K slots. We use the normal FDPIC PLT entry |
1924 | | past that point; we could also use movi20s, which might be faster, |
1925 | | but would not be any smaller. */ |
1926 | | |
1927 | | #define FDPIC_SH2A_PLT_ENTRY_SIZE 24 |
1928 | | #define FDPIC_SH2A_PLT_LAZY_OFFSET 16 |
1929 | | |
1930 | | static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] = |
1931 | | { |
1932 | | 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */ |
1933 | | 0x01, 0xce, /* mov.l @(r0,r12),r1 */ |
1934 | | 0x70, 0x04, /* add #4, r0 */ |
1935 | | 0x41, 0x2b, /* jmp @r1 */ |
1936 | | 0x0c, 0xce, /* mov.l @(r0,r12),r12 */ |
1937 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1938 | | 0x60, 0xc2, /* mov.l @r12,r0 */ |
1939 | | 0x40, 0x2b, /* jmp @r0 */ |
1940 | | 0x53, 0xc1, /* mov.l @(4,r12),r3 */ |
1941 | | 0x00, 0x09, /* nop */ |
1942 | | }; |
1943 | | |
1944 | | static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] = |
1945 | | { |
1946 | | 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */ |
1947 | | 0xce, 0x01, /* mov.l @(r0,r12),r1 */ |
1948 | | 0x04, 0x70, /* add #4, r0 */ |
1949 | | 0x2b, 0x41, /* jmp @r1 */ |
1950 | | 0xce, 0x0c, /* mov.l @(r0,r12),r12 */ |
1951 | | 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
1952 | | 0xc2, 0x60, /* mov.l @r12,r0 */ |
1953 | | 0x2b, 0x40, /* jmp @r0 */ |
1954 | | 0xc1, 0x53, /* mov.l @(4,r12),r3 */ |
1955 | | 0x09, 0x00, /* nop */ |
1956 | | }; |
1957 | | |
1958 | | static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = { |
1959 | | /* Big-endian FDPIC, max index 64K. */ |
1960 | | NULL, |
1961 | | 0, |
1962 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1963 | | fdpic_sh2a_plt_entry_be, |
1964 | | FDPIC_SH2A_PLT_ENTRY_SIZE, |
1965 | | { 0, MINUS_ONE, 12, true }, |
1966 | | FDPIC_SH2A_PLT_LAZY_OFFSET, |
1967 | | NULL |
1968 | | }; |
1969 | | |
1970 | | static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = { |
1971 | | /* Little-endian FDPIC, max index 64K. */ |
1972 | | NULL, |
1973 | | 0, |
1974 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1975 | | fdpic_sh2a_plt_entry_le, |
1976 | | FDPIC_SH2A_PLT_ENTRY_SIZE, |
1977 | | { 0, MINUS_ONE, 12, true }, |
1978 | | FDPIC_SH2A_PLT_LAZY_OFFSET, |
1979 | | NULL |
1980 | | }; |
1981 | | |
1982 | | static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = { |
1983 | | { |
1984 | | /* Big-endian PIC. */ |
1985 | | NULL, |
1986 | | 0, |
1987 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1988 | | fdpic_sh_plt_entry_be, |
1989 | | FDPIC_PLT_ENTRY_SIZE, |
1990 | | { 12, MINUS_ONE, 16, false }, |
1991 | | FDPIC_PLT_LAZY_OFFSET, |
1992 | | &fdpic_sh2a_short_plt_be |
1993 | | }, |
1994 | | { |
1995 | | /* Little-endian PIC. */ |
1996 | | NULL, |
1997 | | 0, |
1998 | | { MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
1999 | | fdpic_sh_plt_entry_le, |
2000 | | FDPIC_PLT_ENTRY_SIZE, |
2001 | | { 12, MINUS_ONE, 16, false }, |
2002 | | FDPIC_PLT_LAZY_OFFSET, |
2003 | | &fdpic_sh2a_short_plt_le |
2004 | | }, |
2005 | | }; |
2006 | | |
2007 | | /* Return the type of PLT associated with ABFD. PIC_P is true if |
2008 | | the object is position-independent. */ |
2009 | | |
2010 | | static const struct elf_sh_plt_info * |
2011 | | get_plt_info (bfd *abfd, bool pic_p) |
2012 | 540 | { |
2013 | 540 | if (fdpic_object_p (abfd)) |
2014 | 0 | { |
2015 | | /* If any input file requires SH2A we can use a shorter PLT |
2016 | | sequence. */ |
2017 | 0 | if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base) |
2018 | 0 | return &fdpic_sh2a_plts[!bfd_big_endian (abfd)]; |
2019 | 0 | else |
2020 | 0 | return &fdpic_sh_plts[!bfd_big_endian (abfd)]; |
2021 | 0 | } |
2022 | 540 | if (vxworks_object_p (abfd)) |
2023 | 0 | return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)]; |
2024 | 540 | return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)]; |
2025 | 540 | } |
2026 | | |
2027 | | /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD. |
2028 | | VALUE is the field's value and CODE_P is true if VALUE refers to code, |
2029 | | not data. */ |
2030 | | |
2031 | | inline static void |
2032 | | install_plt_field (bfd *output_bfd, bool code_p ATTRIBUTE_UNUSED, |
2033 | | unsigned long value, bfd_byte *addr) |
2034 | 0 | { |
2035 | 0 | bfd_put_32 (output_bfd, value, addr); |
2036 | 0 | } |
2037 | | |
2038 | | /* The number of PLT entries which can use a shorter PLT, if any. |
2039 | | Currently always 64K, since only SH-2A FDPIC uses this; a |
2040 | | 20-bit movi20 can address that many function descriptors below |
2041 | | _GLOBAL_OFFSET_TABLE_. */ |
2042 | 0 | #define MAX_SHORT_PLT 65536 |
2043 | | |
2044 | | /* Return the index of the PLT entry at byte offset OFFSET. */ |
2045 | | |
2046 | | static bfd_vma |
2047 | | get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset) |
2048 | 0 | { |
2049 | 0 | bfd_vma plt_index = 0; |
2050 | |
|
2051 | 0 | offset -= info->plt0_entry_size; |
2052 | 0 | if (info->short_plt != NULL) |
2053 | 0 | { |
2054 | 0 | if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size) |
2055 | 0 | { |
2056 | 0 | plt_index = MAX_SHORT_PLT; |
2057 | 0 | offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size; |
2058 | 0 | } |
2059 | 0 | else |
2060 | 0 | info = info->short_plt; |
2061 | 0 | } |
2062 | 0 | return plt_index + offset / info->symbol_entry_size; |
2063 | 0 | } |
2064 | | |
2065 | | /* Do the inverse operation. */ |
2066 | | |
2067 | | static bfd_vma |
2068 | | get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index) |
2069 | 540 | { |
2070 | 540 | bfd_vma offset = 0; |
2071 | | |
2072 | 540 | if (info->short_plt != NULL) |
2073 | 0 | { |
2074 | 0 | if (plt_index > MAX_SHORT_PLT) |
2075 | 0 | { |
2076 | 0 | offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size; |
2077 | 0 | plt_index -= MAX_SHORT_PLT; |
2078 | 0 | } |
2079 | 0 | else |
2080 | 0 | info = info->short_plt; |
2081 | 0 | } |
2082 | 540 | return (offset + info->plt0_entry_size |
2083 | 540 | + (plt_index * info->symbol_entry_size)); |
2084 | 540 | } |
2085 | | |
2086 | | union gotref |
2087 | | { |
2088 | | bfd_signed_vma refcount; |
2089 | | bfd_vma offset; |
2090 | | }; |
2091 | | |
2092 | | /* sh ELF linker hash entry. */ |
2093 | | |
2094 | | struct elf_sh_link_hash_entry |
2095 | | { |
2096 | | struct elf_link_hash_entry root; |
2097 | | |
2098 | | bfd_signed_vma gotplt_refcount; |
2099 | | |
2100 | | /* A local function descriptor, for FDPIC. The refcount counts |
2101 | | R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20 |
2102 | | relocations; the PLT and GOT entry are accounted |
2103 | | for separately. After adjust_dynamic_symbol, the offset is |
2104 | | MINUS_ONE if there is no local descriptor (dynamic linker |
2105 | | managed and no PLT entry, or undefined weak non-dynamic). |
2106 | | During check_relocs we do not yet know whether the local |
2107 | | descriptor will be canonical. */ |
2108 | | union gotref funcdesc; |
2109 | | |
2110 | | /* How many of the above refcounted relocations were R_SH_FUNCDESC, |
2111 | | and thus require fixups or relocations. */ |
2112 | | bfd_signed_vma abs_funcdesc_refcount; |
2113 | | |
2114 | | enum got_type { |
2115 | | GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC |
2116 | | } got_type; |
2117 | | }; |
2118 | | |
2119 | 0 | #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent)) |
2120 | | |
2121 | | struct sh_elf_obj_tdata |
2122 | | { |
2123 | | struct elf_obj_tdata root; |
2124 | | |
2125 | | /* got_type for each local got entry. */ |
2126 | | char *local_got_type; |
2127 | | |
2128 | | /* Function descriptor refcount and offset for each local symbol. */ |
2129 | | union gotref *local_funcdesc; |
2130 | | }; |
2131 | | |
2132 | | #define sh_elf_tdata(abfd) \ |
2133 | 0 | ((struct sh_elf_obj_tdata *) (abfd)->tdata.any) |
2134 | | |
2135 | | #define sh_elf_local_got_type(abfd) \ |
2136 | 0 | (sh_elf_tdata (abfd)->local_got_type) |
2137 | | |
2138 | | #define sh_elf_local_funcdesc(abfd) \ |
2139 | 0 | (sh_elf_tdata (abfd)->local_funcdesc) |
2140 | | |
2141 | | #define is_sh_elf(bfd) \ |
2142 | 3 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ |
2143 | 2 | && elf_tdata (bfd) != NULL \ |
2144 | 3 | && elf_object_id (bfd) == SH_ELF_DATA) |
2145 | | |
2146 | | /* Override the generic function because we need to store sh_elf_obj_tdata |
2147 | | as the specific tdata. */ |
2148 | | |
2149 | | static bool |
2150 | | sh_elf_mkobject (bfd *abfd) |
2151 | 1.55M | { |
2152 | 1.55M | return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata)); |
2153 | 1.55M | } |
2154 | | |
2155 | | /* sh ELF linker hash table. */ |
2156 | | |
2157 | | struct elf_sh_link_hash_table |
2158 | | { |
2159 | | struct elf_link_hash_table root; |
2160 | | |
2161 | | /* Short-cuts to get to dynamic linker sections. */ |
2162 | | asection *sfuncdesc; |
2163 | | asection *srelfuncdesc; |
2164 | | asection *srofixup; |
2165 | | |
2166 | | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
2167 | | asection *srelplt2; |
2168 | | |
2169 | | /* A counter or offset to track a TLS got entry. */ |
2170 | | union |
2171 | | { |
2172 | | bfd_signed_vma refcount; |
2173 | | bfd_vma offset; |
2174 | | } tls_ldm_got; |
2175 | | |
2176 | | /* The type of PLT to use. */ |
2177 | | const struct elf_sh_plt_info *plt_info; |
2178 | | |
2179 | | /* True if the target system uses FDPIC. */ |
2180 | | bool fdpic_p; |
2181 | | }; |
2182 | | |
2183 | | /* Traverse an sh ELF linker hash table. */ |
2184 | | |
2185 | | #define sh_elf_link_hash_traverse(table, func, info) \ |
2186 | | (elf_link_hash_traverse \ |
2187 | | (&(table)->root, \ |
2188 | | (bool (*) (struct elf_link_hash_entry *, void *)) (func), \ |
2189 | | (info))) |
2190 | | |
2191 | | /* Get the sh ELF linker hash table from a link_info structure. */ |
2192 | | |
2193 | | #define sh_elf_hash_table(p) \ |
2194 | 0 | ((is_elf_hash_table ((p)->hash) \ |
2195 | 0 | && elf_hash_table_id (elf_hash_table (p)) == SH_ELF_DATA) \ |
2196 | 0 | ? (struct elf_sh_link_hash_table *) (p)->hash : NULL) |
2197 | | |
2198 | | /* Create an entry in an sh ELF linker hash table. */ |
2199 | | |
2200 | | static struct bfd_hash_entry * |
2201 | | sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
2202 | | struct bfd_hash_table *table, |
2203 | | const char *string) |
2204 | 0 | { |
2205 | 0 | struct elf_sh_link_hash_entry *ret = |
2206 | 0 | (struct elf_sh_link_hash_entry *) entry; |
2207 | | |
2208 | | /* Allocate the structure if it has not already been allocated by a |
2209 | | subclass. */ |
2210 | 0 | if (ret == (struct elf_sh_link_hash_entry *) NULL) |
2211 | 0 | ret = ((struct elf_sh_link_hash_entry *) |
2212 | 0 | bfd_hash_allocate (table, |
2213 | 0 | sizeof (struct elf_sh_link_hash_entry))); |
2214 | 0 | if (ret == (struct elf_sh_link_hash_entry *) NULL) |
2215 | 0 | return (struct bfd_hash_entry *) ret; |
2216 | | |
2217 | | /* Call the allocation method of the superclass. */ |
2218 | 0 | ret = ((struct elf_sh_link_hash_entry *) |
2219 | 0 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2220 | 0 | table, string)); |
2221 | 0 | if (ret != (struct elf_sh_link_hash_entry *) NULL) |
2222 | 0 | { |
2223 | 0 | ret->gotplt_refcount = 0; |
2224 | 0 | ret->funcdesc.refcount = 0; |
2225 | 0 | ret->abs_funcdesc_refcount = 0; |
2226 | 0 | ret->got_type = GOT_UNKNOWN; |
2227 | 0 | } |
2228 | |
|
2229 | 0 | return (struct bfd_hash_entry *) ret; |
2230 | 0 | } |
2231 | | |
2232 | | /* Create an sh ELF linker hash table. */ |
2233 | | |
2234 | | static struct bfd_link_hash_table * |
2235 | | sh_elf_link_hash_table_create (bfd *abfd) |
2236 | 0 | { |
2237 | 0 | struct elf_sh_link_hash_table *ret; |
2238 | 0 | size_t amt = sizeof (struct elf_sh_link_hash_table); |
2239 | |
|
2240 | 0 | ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt); |
2241 | 0 | if (ret == (struct elf_sh_link_hash_table *) NULL) |
2242 | 0 | return NULL; |
2243 | | |
2244 | 0 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
2245 | 0 | sh_elf_link_hash_newfunc, |
2246 | 0 | sizeof (struct elf_sh_link_hash_entry))) |
2247 | 0 | { |
2248 | 0 | free (ret); |
2249 | 0 | return NULL; |
2250 | 0 | } |
2251 | | |
2252 | 0 | if (fdpic_object_p (abfd)) |
2253 | 0 | { |
2254 | 0 | ret->root.dt_pltgot_required = true; |
2255 | 0 | ret->fdpic_p = true; |
2256 | 0 | } |
2257 | |
|
2258 | 0 | return &ret->root.root; |
2259 | 0 | } |
2260 | | |
2261 | | static bool |
2262 | | sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
2263 | | struct bfd_link_info *info, asection *p) |
2264 | 0 | { |
2265 | 0 | struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info); |
2266 | | |
2267 | | /* Non-FDPIC binaries do not need dynamic symbols for sections. */ |
2268 | 0 | if (!htab->fdpic_p) |
2269 | 0 | return true; |
2270 | | |
2271 | | /* We need dynamic symbols for every section, since segments can |
2272 | | relocate independently. */ |
2273 | 0 | switch (elf_section_data (p)->this_hdr.sh_type) |
2274 | 0 | { |
2275 | 0 | case SHT_PROGBITS: |
2276 | 0 | case SHT_NOBITS: |
2277 | | /* If sh_type is yet undecided, assume it could be |
2278 | | SHT_PROGBITS/SHT_NOBITS. */ |
2279 | 0 | case SHT_NULL: |
2280 | 0 | return false; |
2281 | | |
2282 | | /* There shouldn't be section relative relocations |
2283 | | against any other section. */ |
2284 | 0 | default: |
2285 | 0 | return true; |
2286 | 0 | } |
2287 | 0 | } |
2288 | | |
2289 | | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up |
2290 | | shortcuts to them in our hash table. */ |
2291 | | |
2292 | | static bool |
2293 | | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
2294 | 0 | { |
2295 | 0 | struct elf_sh_link_hash_table *htab; |
2296 | |
|
2297 | 0 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2298 | 0 | return false; |
2299 | | |
2300 | 0 | htab = sh_elf_hash_table (info); |
2301 | 0 | if (htab == NULL) |
2302 | 0 | return false; |
2303 | | |
2304 | 0 | htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc", |
2305 | 0 | (SEC_ALLOC | SEC_LOAD |
2306 | 0 | | SEC_HAS_CONTENTS |
2307 | 0 | | SEC_IN_MEMORY |
2308 | 0 | | SEC_LINKER_CREATED)); |
2309 | 0 | if (htab->sfuncdesc == NULL |
2310 | 0 | || !bfd_set_section_alignment (htab->sfuncdesc, 2)) |
2311 | 0 | return false; |
2312 | | |
2313 | 0 | htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj, |
2314 | 0 | ".rela.got.funcdesc", |
2315 | 0 | (SEC_ALLOC | SEC_LOAD |
2316 | 0 | | SEC_HAS_CONTENTS |
2317 | 0 | | SEC_IN_MEMORY |
2318 | 0 | | SEC_LINKER_CREATED |
2319 | 0 | | SEC_READONLY)); |
2320 | 0 | if (htab->srelfuncdesc == NULL |
2321 | 0 | || !bfd_set_section_alignment (htab->srelfuncdesc, 2)) |
2322 | 0 | return false; |
2323 | | |
2324 | | /* Also create .rofixup. */ |
2325 | 0 | htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup", |
2326 | 0 | (SEC_ALLOC | SEC_LOAD |
2327 | 0 | | SEC_HAS_CONTENTS |
2328 | 0 | | SEC_IN_MEMORY |
2329 | 0 | | SEC_LINKER_CREATED |
2330 | 0 | | SEC_READONLY)); |
2331 | 0 | if (htab->srofixup == NULL |
2332 | 0 | || !bfd_set_section_alignment (htab->srofixup, 2)) |
2333 | 0 | return false; |
2334 | | |
2335 | 0 | return true; |
2336 | 0 | } |
2337 | | |
2338 | | /* Create dynamic sections when linking against a dynamic object. */ |
2339 | | |
2340 | | static bool |
2341 | | sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
2342 | 0 | { |
2343 | 0 | struct elf_sh_link_hash_table *htab; |
2344 | 0 | flagword flags, pltflags; |
2345 | 0 | asection *s; |
2346 | 0 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
2347 | 0 | int ptralign = 0; |
2348 | |
|
2349 | 0 | switch (bed->s->arch_size) |
2350 | 0 | { |
2351 | 0 | case 32: |
2352 | 0 | ptralign = 2; |
2353 | 0 | break; |
2354 | | |
2355 | 0 | case 64: |
2356 | 0 | ptralign = 3; |
2357 | 0 | break; |
2358 | | |
2359 | 0 | default: |
2360 | 0 | bfd_set_error (bfd_error_bad_value); |
2361 | 0 | return false; |
2362 | 0 | } |
2363 | | |
2364 | 0 | htab = sh_elf_hash_table (info); |
2365 | 0 | if (htab == NULL) |
2366 | 0 | return false; |
2367 | | |
2368 | 0 | if (htab->root.dynamic_sections_created) |
2369 | 0 | return true; |
2370 | | |
2371 | | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
2372 | | .rel[a].bss sections. */ |
2373 | | |
2374 | 0 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2375 | 0 | | SEC_LINKER_CREATED); |
2376 | |
|
2377 | 0 | pltflags = flags; |
2378 | 0 | pltflags |= SEC_CODE; |
2379 | 0 | if (bed->plt_not_loaded) |
2380 | 0 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); |
2381 | 0 | if (bed->plt_readonly) |
2382 | 0 | pltflags |= SEC_READONLY; |
2383 | |
|
2384 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
2385 | 0 | htab->root.splt = s; |
2386 | 0 | if (s == NULL |
2387 | 0 | || !bfd_set_section_alignment (s, bed->plt_alignment)) |
2388 | 0 | return false; |
2389 | | |
2390 | 0 | if (bed->want_plt_sym) |
2391 | 0 | { |
2392 | | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
2393 | | .plt section. */ |
2394 | 0 | struct elf_link_hash_entry *h; |
2395 | 0 | struct bfd_link_hash_entry *bh = NULL; |
2396 | |
|
2397 | 0 | if (! (_bfd_generic_link_add_one_symbol |
2398 | 0 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
2399 | 0 | (bfd_vma) 0, (const char *) NULL, false, |
2400 | 0 | get_elf_backend_data (abfd)->collect, &bh))) |
2401 | 0 | return false; |
2402 | | |
2403 | 0 | h = (struct elf_link_hash_entry *) bh; |
2404 | 0 | h->def_regular = 1; |
2405 | 0 | h->type = STT_OBJECT; |
2406 | 0 | htab->root.hplt = h; |
2407 | |
|
2408 | 0 | if (bfd_link_pic (info) |
2409 | 0 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
2410 | 0 | return false; |
2411 | 0 | } |
2412 | | |
2413 | 0 | s = bfd_make_section_anyway_with_flags (abfd, |
2414 | 0 | bed->default_use_rela_p |
2415 | 0 | ? ".rela.plt" : ".rel.plt", |
2416 | 0 | flags | SEC_READONLY); |
2417 | 0 | htab->root.srelplt = s; |
2418 | 0 | if (s == NULL |
2419 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
2420 | 0 | return false; |
2421 | | |
2422 | 0 | if (htab->root.sgot == NULL |
2423 | 0 | && !create_got_section (abfd, info)) |
2424 | 0 | return false; |
2425 | | |
2426 | 0 | if (bed->want_dynbss) |
2427 | 0 | { |
2428 | | /* The .dynbss section is a place to put symbols which are defined |
2429 | | by dynamic objects, are referenced by regular objects, and are |
2430 | | not functions. We must allocate space for them in the process |
2431 | | image and use a R_*_COPY reloc to tell the dynamic linker to |
2432 | | initialize them at run time. The linker script puts the .dynbss |
2433 | | section into the .bss section of the final image. */ |
2434 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
2435 | 0 | SEC_ALLOC | SEC_LINKER_CREATED); |
2436 | 0 | htab->root.sdynbss = s; |
2437 | 0 | if (s == NULL) |
2438 | 0 | return false; |
2439 | | |
2440 | | /* The .rel[a].bss section holds copy relocs. This section is not |
2441 | | normally needed. We need to create it here, though, so that the |
2442 | | linker will map it to an output section. We can't just create it |
2443 | | only if we need it, because we will not know whether we need it |
2444 | | until we have seen all the input files, and the first time the |
2445 | | main linker code calls BFD after examining all the input files |
2446 | | (size_dynamic_sections) the input sections have already been |
2447 | | mapped to the output sections. If the section turns out not to |
2448 | | be needed, we can discard it later. We will never need this |
2449 | | section when generating a shared object, since they do not use |
2450 | | copy relocs. */ |
2451 | 0 | if (! bfd_link_pic (info)) |
2452 | 0 | { |
2453 | 0 | s = bfd_make_section_anyway_with_flags (abfd, |
2454 | 0 | (bed->default_use_rela_p |
2455 | 0 | ? ".rela.bss" : ".rel.bss"), |
2456 | 0 | flags | SEC_READONLY); |
2457 | 0 | htab->root.srelbss = s; |
2458 | 0 | if (s == NULL |
2459 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
2460 | 0 | return false; |
2461 | 0 | } |
2462 | 0 | } |
2463 | | |
2464 | 0 | if (htab->root.target_os == is_vxworks) |
2465 | 0 | { |
2466 | 0 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) |
2467 | 0 | return false; |
2468 | 0 | } |
2469 | | |
2470 | 0 | return true; |
2471 | 0 | } |
2472 | | |
2473 | | /* Adjust a symbol defined by a dynamic object and referenced by a |
2474 | | regular object. The current definition is in some section of the |
2475 | | dynamic object, but we're not including those sections. We have to |
2476 | | change the definition to something the rest of the link can |
2477 | | understand. */ |
2478 | | |
2479 | | static bool |
2480 | | sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
2481 | | struct elf_link_hash_entry *h) |
2482 | 0 | { |
2483 | 0 | struct elf_sh_link_hash_table *htab; |
2484 | 0 | asection *s; |
2485 | |
|
2486 | 0 | htab = sh_elf_hash_table (info); |
2487 | 0 | if (htab == NULL) |
2488 | 0 | return false; |
2489 | | |
2490 | | /* Make sure we know what is going on here. */ |
2491 | 0 | BFD_ASSERT (htab->root.dynobj != NULL |
2492 | 0 | && (h->needs_plt |
2493 | 0 | || h->is_weakalias |
2494 | 0 | || (h->def_dynamic |
2495 | 0 | && h->ref_regular |
2496 | 0 | && !h->def_regular))); |
2497 | | |
2498 | | /* If this is a function, put it in the procedure linkage table. We |
2499 | | will fill in the contents of the procedure linkage table later, |
2500 | | when we know the address of the .got section. */ |
2501 | 0 | if (h->type == STT_FUNC |
2502 | 0 | || h->needs_plt) |
2503 | 0 | { |
2504 | 0 | if (h->plt.refcount <= 0 |
2505 | 0 | || SYMBOL_CALLS_LOCAL (info, h) |
2506 | 0 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
2507 | 0 | && h->root.type == bfd_link_hash_undefweak)) |
2508 | 0 | { |
2509 | | /* This case can occur if we saw a PLT reloc in an input |
2510 | | file, but the symbol was never referred to by a dynamic |
2511 | | object. In such a case, we don't actually need to build |
2512 | | a procedure linkage table, and we can just do a REL32 |
2513 | | reloc instead. */ |
2514 | 0 | h->plt.offset = (bfd_vma) -1; |
2515 | 0 | h->needs_plt = 0; |
2516 | 0 | } |
2517 | |
|
2518 | 0 | return true; |
2519 | 0 | } |
2520 | 0 | else |
2521 | 0 | h->plt.offset = (bfd_vma) -1; |
2522 | | |
2523 | | /* If this is a weak symbol, and there is a real definition, the |
2524 | | processor independent code will have arranged for us to see the |
2525 | | real definition first, and we can just use the same value. */ |
2526 | 0 | if (h->is_weakalias) |
2527 | 0 | { |
2528 | 0 | struct elf_link_hash_entry *def = weakdef (h); |
2529 | 0 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); |
2530 | 0 | h->root.u.def.section = def->root.u.def.section; |
2531 | 0 | h->root.u.def.value = def->root.u.def.value; |
2532 | 0 | if (info->nocopyreloc) |
2533 | 0 | h->non_got_ref = def->non_got_ref; |
2534 | 0 | return true; |
2535 | 0 | } |
2536 | | |
2537 | | /* This is a reference to a symbol defined by a dynamic object which |
2538 | | is not a function. */ |
2539 | | |
2540 | | /* If we are creating a shared library, we must presume that the |
2541 | | only references to the symbol are via the global offset table. |
2542 | | For such cases we need not do anything here; the relocations will |
2543 | | be handled correctly by relocate_section. */ |
2544 | 0 | if (bfd_link_pic (info)) |
2545 | 0 | return true; |
2546 | | |
2547 | | /* If there are no references to this symbol that do not use the |
2548 | | GOT, we don't need to generate a copy reloc. */ |
2549 | 0 | if (!h->non_got_ref) |
2550 | 0 | return true; |
2551 | | |
2552 | | /* If -z nocopyreloc was given, we won't generate them either. */ |
2553 | 0 | if (0 && info->nocopyreloc) |
2554 | 0 | { |
2555 | 0 | h->non_got_ref = 0; |
2556 | 0 | return true; |
2557 | 0 | } |
2558 | | |
2559 | | /* If we don't find any dynamic relocs in read-only sections, then |
2560 | | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
2561 | 0 | if (0 && !_bfd_elf_readonly_dynrelocs (h)) |
2562 | 0 | { |
2563 | 0 | h->non_got_ref = 0; |
2564 | 0 | return true; |
2565 | 0 | } |
2566 | | |
2567 | | /* We must allocate the symbol in our .dynbss section, which will |
2568 | | become part of the .bss section of the executable. There will be |
2569 | | an entry for this symbol in the .dynsym section. The dynamic |
2570 | | object will contain position independent code, so all references |
2571 | | from the dynamic object to this symbol will go through the global |
2572 | | offset table. The dynamic linker will use the .dynsym entry to |
2573 | | determine the address it must put in the global offset table, so |
2574 | | both the dynamic object and the regular object will refer to the |
2575 | | same memory location for the variable. */ |
2576 | | |
2577 | 0 | s = htab->root.sdynbss; |
2578 | 0 | BFD_ASSERT (s != NULL); |
2579 | | |
2580 | | /* We must generate a R_SH_COPY reloc to tell the dynamic linker to |
2581 | | copy the initial value out of the dynamic object and into the |
2582 | | runtime process image. We need to remember the offset into the |
2583 | | .rela.bss section we are going to use. */ |
2584 | 0 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
2585 | 0 | { |
2586 | 0 | asection *srel; |
2587 | |
|
2588 | 0 | srel = htab->root.srelbss; |
2589 | 0 | BFD_ASSERT (srel != NULL); |
2590 | 0 | srel->size += sizeof (Elf32_External_Rela); |
2591 | 0 | h->needs_copy = 1; |
2592 | 0 | } |
2593 | |
|
2594 | 0 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
2595 | 0 | } |
2596 | | |
2597 | | /* Allocate space in .plt, .got and associated reloc sections for |
2598 | | dynamic relocs. */ |
2599 | | |
2600 | | static bool |
2601 | | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
2602 | 0 | { |
2603 | 0 | struct bfd_link_info *info; |
2604 | 0 | struct elf_sh_link_hash_table *htab; |
2605 | 0 | struct elf_sh_link_hash_entry *eh; |
2606 | 0 | struct elf_dyn_relocs *p; |
2607 | |
|
2608 | 0 | if (h->root.type == bfd_link_hash_indirect) |
2609 | 0 | return true; |
2610 | | |
2611 | 0 | info = (struct bfd_link_info *) inf; |
2612 | 0 | htab = sh_elf_hash_table (info); |
2613 | 0 | if (htab == NULL) |
2614 | 0 | return false; |
2615 | | |
2616 | 0 | eh = (struct elf_sh_link_hash_entry *) h; |
2617 | 0 | if ((h->got.refcount > 0 |
2618 | 0 | || h->forced_local) |
2619 | 0 | && eh->gotplt_refcount > 0) |
2620 | 0 | { |
2621 | | /* The symbol has been forced local, or we have some direct got refs, |
2622 | | so treat all the gotplt refs as got refs. */ |
2623 | 0 | h->got.refcount += eh->gotplt_refcount; |
2624 | 0 | if (h->plt.refcount >= eh->gotplt_refcount) |
2625 | 0 | h->plt.refcount -= eh->gotplt_refcount; |
2626 | 0 | } |
2627 | |
|
2628 | 0 | if (htab->root.dynamic_sections_created |
2629 | 0 | && h->plt.refcount > 0 |
2630 | 0 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2631 | 0 | || h->root.type != bfd_link_hash_undefweak)) |
2632 | 0 | { |
2633 | | /* Make sure this symbol is output as a dynamic symbol. |
2634 | | Undefined weak syms won't yet be marked as dynamic. */ |
2635 | 0 | if (h->dynindx == -1 |
2636 | 0 | && !h->forced_local) |
2637 | 0 | { |
2638 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
2639 | 0 | return false; |
2640 | 0 | } |
2641 | | |
2642 | 0 | if (bfd_link_pic (info) |
2643 | 0 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
2644 | 0 | { |
2645 | 0 | asection *s = htab->root.splt; |
2646 | 0 | const struct elf_sh_plt_info *plt_info; |
2647 | | |
2648 | | /* If this is the first .plt entry, make room for the special |
2649 | | first entry. */ |
2650 | 0 | if (s->size == 0) |
2651 | 0 | s->size += htab->plt_info->plt0_entry_size; |
2652 | |
|
2653 | 0 | h->plt.offset = s->size; |
2654 | | |
2655 | | /* If this symbol is not defined in a regular file, and we are |
2656 | | not generating a shared library, then set the symbol to this |
2657 | | location in the .plt. This is required to make function |
2658 | | pointers compare as equal between the normal executable and |
2659 | | the shared library. Skip this for FDPIC, since the |
2660 | | function's address will be the address of the canonical |
2661 | | function descriptor. */ |
2662 | 0 | if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular) |
2663 | 0 | { |
2664 | 0 | h->root.u.def.section = s; |
2665 | 0 | h->root.u.def.value = h->plt.offset; |
2666 | 0 | } |
2667 | | |
2668 | | /* Make room for this entry. */ |
2669 | 0 | plt_info = htab->plt_info; |
2670 | 0 | if (plt_info->short_plt != NULL |
2671 | 0 | && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT)) |
2672 | 0 | plt_info = plt_info->short_plt; |
2673 | 0 | s->size += plt_info->symbol_entry_size; |
2674 | | |
2675 | | /* We also need to make an entry in the .got.plt section, which |
2676 | | will be placed in the .got section by the linker script. */ |
2677 | 0 | if (!htab->fdpic_p) |
2678 | 0 | htab->root.sgotplt->size += 4; |
2679 | 0 | else |
2680 | 0 | htab->root.sgotplt->size += 8; |
2681 | | |
2682 | | /* We also need to make an entry in the .rel.plt section. */ |
2683 | 0 | htab->root.srelplt->size += sizeof (Elf32_External_Rela); |
2684 | |
|
2685 | 0 | if (htab->root.target_os == is_vxworks && !bfd_link_pic (info)) |
2686 | 0 | { |
2687 | | /* VxWorks executables have a second set of relocations |
2688 | | for each PLT entry. They go in a separate relocation |
2689 | | section, which is processed by the kernel loader. */ |
2690 | | |
2691 | | /* There is a relocation for the initial PLT entry: |
2692 | | an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */ |
2693 | 0 | if (h->plt.offset == htab->plt_info->plt0_entry_size) |
2694 | 0 | htab->srelplt2->size += sizeof (Elf32_External_Rela); |
2695 | | |
2696 | | /* There are two extra relocations for each subsequent |
2697 | | PLT entry: an R_SH_DIR32 relocation for the GOT entry, |
2698 | | and an R_SH_DIR32 relocation for the PLT entry. */ |
2699 | 0 | htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2; |
2700 | 0 | } |
2701 | 0 | } |
2702 | 0 | else |
2703 | 0 | { |
2704 | 0 | h->plt.offset = (bfd_vma) -1; |
2705 | 0 | h->needs_plt = 0; |
2706 | 0 | } |
2707 | 0 | } |
2708 | 0 | else |
2709 | 0 | { |
2710 | 0 | h->plt.offset = (bfd_vma) -1; |
2711 | 0 | h->needs_plt = 0; |
2712 | 0 | } |
2713 | | |
2714 | 0 | if (h->got.refcount > 0) |
2715 | 0 | { |
2716 | 0 | asection *s; |
2717 | 0 | bool dyn; |
2718 | 0 | enum got_type got_type = sh_elf_hash_entry (h)->got_type; |
2719 | | |
2720 | | /* Make sure this symbol is output as a dynamic symbol. |
2721 | | Undefined weak syms won't yet be marked as dynamic. */ |
2722 | 0 | if (h->dynindx == -1 |
2723 | 0 | && !h->forced_local) |
2724 | 0 | { |
2725 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
2726 | 0 | return false; |
2727 | 0 | } |
2728 | | |
2729 | 0 | s = htab->root.sgot; |
2730 | 0 | h->got.offset = s->size; |
2731 | 0 | s->size += 4; |
2732 | | /* R_SH_TLS_GD needs 2 consecutive GOT slots. */ |
2733 | 0 | if (got_type == GOT_TLS_GD) |
2734 | 0 | s->size += 4; |
2735 | 0 | dyn = htab->root.dynamic_sections_created; |
2736 | 0 | if (!dyn) |
2737 | 0 | { |
2738 | | /* No dynamic relocations required. */ |
2739 | 0 | if (htab->fdpic_p && !bfd_link_pic (info) |
2740 | 0 | && h->root.type != bfd_link_hash_undefweak |
2741 | 0 | && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC)) |
2742 | 0 | htab->srofixup->size += 4; |
2743 | 0 | } |
2744 | | /* No dynamic relocations required when IE->LE conversion happens. */ |
2745 | 0 | else if (got_type == GOT_TLS_IE |
2746 | 0 | && !h->def_dynamic |
2747 | 0 | && !bfd_link_pic (info)) |
2748 | 0 | ; |
2749 | | /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic, |
2750 | | R_SH_TLS_GD needs one if local symbol and two if global. */ |
2751 | 0 | else if ((got_type == GOT_TLS_GD && h->dynindx == -1) |
2752 | 0 | || got_type == GOT_TLS_IE) |
2753 | 0 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
2754 | 0 | else if (got_type == GOT_TLS_GD) |
2755 | 0 | htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
2756 | 0 | else if (got_type == GOT_FUNCDESC) |
2757 | 0 | { |
2758 | 0 | if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h)) |
2759 | 0 | htab->srofixup->size += 4; |
2760 | 0 | else |
2761 | 0 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
2762 | 0 | } |
2763 | 0 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2764 | 0 | || h->root.type != bfd_link_hash_undefweak) |
2765 | 0 | && (bfd_link_pic (info) |
2766 | 0 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
2767 | 0 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
2768 | 0 | else if (htab->fdpic_p |
2769 | 0 | && !bfd_link_pic (info) |
2770 | 0 | && got_type == GOT_NORMAL |
2771 | 0 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2772 | 0 | || h->root.type != bfd_link_hash_undefweak)) |
2773 | 0 | htab->srofixup->size += 4; |
2774 | 0 | } |
2775 | 0 | else |
2776 | 0 | h->got.offset = (bfd_vma) -1; |
2777 | | |
2778 | | /* Allocate space for any dynamic relocations to function |
2779 | | descriptors, canonical or otherwise. We need to relocate the |
2780 | | reference unless it resolves to zero, which only happens for |
2781 | | undefined weak symbols (either non-default visibility, or when |
2782 | | static linking). Any GOT slot is accounted for elsewhere. */ |
2783 | 0 | if (eh->abs_funcdesc_refcount > 0 |
2784 | 0 | && (h->root.type != bfd_link_hash_undefweak |
2785 | 0 | || (htab->root.dynamic_sections_created |
2786 | 0 | && ! SYMBOL_CALLS_LOCAL (info, h)))) |
2787 | 0 | { |
2788 | 0 | if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h)) |
2789 | 0 | htab->srofixup->size += eh->abs_funcdesc_refcount * 4; |
2790 | 0 | else |
2791 | 0 | htab->root.srelgot->size |
2792 | 0 | += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela); |
2793 | 0 | } |
2794 | | |
2795 | | /* We must allocate a function descriptor if there are references to |
2796 | | a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and |
2797 | | the dynamic linker isn't going to allocate it. None of this |
2798 | | applies if we already created one in .got.plt, but if the |
2799 | | canonical function descriptor can be in this object, there |
2800 | | won't be a PLT entry at all. */ |
2801 | 0 | if ((eh->funcdesc.refcount > 0 |
2802 | 0 | || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC)) |
2803 | 0 | && h->root.type != bfd_link_hash_undefweak |
2804 | 0 | && SYMBOL_FUNCDESC_LOCAL (info, h)) |
2805 | 0 | { |
2806 | | /* Make room for this function descriptor. */ |
2807 | 0 | eh->funcdesc.offset = htab->sfuncdesc->size; |
2808 | 0 | htab->sfuncdesc->size += 8; |
2809 | | |
2810 | | /* We will need a relocation or two fixups to initialize the |
2811 | | function descriptor, so allocate those too. */ |
2812 | 0 | if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h)) |
2813 | 0 | htab->srofixup->size += 8; |
2814 | 0 | else |
2815 | 0 | htab->srelfuncdesc->size += sizeof (Elf32_External_Rela); |
2816 | 0 | } |
2817 | |
|
2818 | 0 | if (h->dyn_relocs == NULL) |
2819 | 0 | return true; |
2820 | | |
2821 | | /* In the shared -Bsymbolic case, discard space allocated for |
2822 | | dynamic pc-relative relocs against symbols which turn out to be |
2823 | | defined in regular objects. For the normal shared case, discard |
2824 | | space for pc-relative relocs that have become local due to symbol |
2825 | | visibility changes. */ |
2826 | | |
2827 | 0 | if (bfd_link_pic (info)) |
2828 | 0 | { |
2829 | 0 | if (SYMBOL_CALLS_LOCAL (info, h)) |
2830 | 0 | { |
2831 | 0 | struct elf_dyn_relocs **pp; |
2832 | |
|
2833 | 0 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
2834 | 0 | { |
2835 | 0 | p->count -= p->pc_count; |
2836 | 0 | p->pc_count = 0; |
2837 | 0 | if (p->count == 0) |
2838 | 0 | *pp = p->next; |
2839 | 0 | else |
2840 | 0 | pp = &p->next; |
2841 | 0 | } |
2842 | 0 | } |
2843 | |
|
2844 | 0 | if (htab->root.target_os == is_vxworks) |
2845 | 0 | { |
2846 | 0 | struct elf_dyn_relocs **pp; |
2847 | |
|
2848 | 0 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
2849 | 0 | { |
2850 | 0 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) |
2851 | 0 | *pp = p->next; |
2852 | 0 | else |
2853 | 0 | pp = &p->next; |
2854 | 0 | } |
2855 | 0 | } |
2856 | | |
2857 | | /* Also discard relocs on undefined weak syms with non-default |
2858 | | visibility. */ |
2859 | 0 | if (h->dyn_relocs != NULL |
2860 | 0 | && h->root.type == bfd_link_hash_undefweak) |
2861 | 0 | { |
2862 | 0 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
2863 | 0 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
2864 | 0 | h->dyn_relocs = NULL; |
2865 | | |
2866 | | /* Make sure undefined weak symbols are output as a dynamic |
2867 | | symbol in PIEs. */ |
2868 | 0 | else if (h->dynindx == -1 |
2869 | 0 | && !h->forced_local) |
2870 | 0 | { |
2871 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
2872 | 0 | return false; |
2873 | 0 | } |
2874 | 0 | } |
2875 | 0 | } |
2876 | 0 | else |
2877 | 0 | { |
2878 | | /* For the non-shared case, discard space for relocs against |
2879 | | symbols which turn out to need copy relocs or are not |
2880 | | dynamic. */ |
2881 | |
|
2882 | 0 | if (!h->non_got_ref |
2883 | 0 | && ((h->def_dynamic |
2884 | 0 | && !h->def_regular) |
2885 | 0 | || (htab->root.dynamic_sections_created |
2886 | 0 | && (h->root.type == bfd_link_hash_undefweak |
2887 | 0 | || h->root.type == bfd_link_hash_undefined)))) |
2888 | 0 | { |
2889 | | /* Make sure this symbol is output as a dynamic symbol. |
2890 | | Undefined weak syms won't yet be marked as dynamic. */ |
2891 | 0 | if (h->dynindx == -1 |
2892 | 0 | && !h->forced_local) |
2893 | 0 | { |
2894 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
2895 | 0 | return false; |
2896 | 0 | } |
2897 | | |
2898 | | /* If that succeeded, we know we'll be keeping all the |
2899 | | relocs. */ |
2900 | 0 | if (h->dynindx != -1) |
2901 | 0 | goto keep; |
2902 | 0 | } |
2903 | | |
2904 | 0 | h->dyn_relocs = NULL; |
2905 | |
|
2906 | 0 | keep: ; |
2907 | 0 | } |
2908 | | |
2909 | | /* Finally, allocate space. */ |
2910 | 0 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
2911 | 0 | { |
2912 | 0 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
2913 | 0 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
2914 | | |
2915 | | /* If we need relocations, we do not need fixups. */ |
2916 | 0 | if (htab->fdpic_p && !bfd_link_pic (info)) |
2917 | 0 | htab->srofixup->size -= 4 * (p->count - p->pc_count); |
2918 | 0 | } |
2919 | |
|
2920 | 0 | return true; |
2921 | 0 | } |
2922 | | |
2923 | | /* This function is called after all the input files have been read, |
2924 | | and the input sections have been assigned to output sections. |
2925 | | It's a convenient place to determine the PLT style. */ |
2926 | | |
2927 | | static bool |
2928 | | sh_elf_early_size_sections (bfd *output_bfd, struct bfd_link_info *info) |
2929 | 0 | { |
2930 | 0 | sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, |
2931 | 0 | bfd_link_pic (info)); |
2932 | |
|
2933 | 0 | if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info) |
2934 | 0 | && !bfd_elf_stack_segment_size (output_bfd, info, |
2935 | 0 | "__stacksize", DEFAULT_STACK_SIZE)) |
2936 | 0 | return false; |
2937 | 0 | return true; |
2938 | 0 | } |
2939 | | |
2940 | | /* Set the sizes of the dynamic sections. */ |
2941 | | |
2942 | | static bool |
2943 | | sh_elf_late_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2944 | | struct bfd_link_info *info) |
2945 | 0 | { |
2946 | 0 | struct elf_sh_link_hash_table *htab; |
2947 | 0 | bfd *dynobj; |
2948 | 0 | asection *s; |
2949 | 0 | bool relocs; |
2950 | 0 | bfd *ibfd; |
2951 | |
|
2952 | 0 | htab = sh_elf_hash_table (info); |
2953 | 0 | if (htab == NULL) |
2954 | 0 | return false; |
2955 | | |
2956 | 0 | dynobj = htab->root.dynobj; |
2957 | 0 | if (dynobj == NULL) |
2958 | 0 | return true; |
2959 | | |
2960 | 0 | if (htab->root.dynamic_sections_created) |
2961 | 0 | { |
2962 | | /* Set the contents of the .interp section to the interpreter. */ |
2963 | 0 | if (bfd_link_executable (info) && !info->nointerp) |
2964 | 0 | { |
2965 | 0 | s = bfd_get_linker_section (dynobj, ".interp"); |
2966 | 0 | BFD_ASSERT (s != NULL); |
2967 | 0 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
2968 | 0 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2969 | 0 | s->alloced = 1; |
2970 | 0 | } |
2971 | 0 | } |
2972 | | |
2973 | | /* Set up .got offsets for local syms, and space for local dynamic |
2974 | | relocs. */ |
2975 | 0 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
2976 | 0 | { |
2977 | 0 | bfd_signed_vma *local_got; |
2978 | 0 | bfd_signed_vma *end_local_got; |
2979 | 0 | union gotref *local_funcdesc, *end_local_funcdesc; |
2980 | 0 | char *local_got_type; |
2981 | 0 | bfd_size_type locsymcount; |
2982 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2983 | 0 | asection *srel; |
2984 | |
|
2985 | 0 | if (! is_sh_elf (ibfd)) |
2986 | 0 | continue; |
2987 | | |
2988 | 0 | for (s = ibfd->sections; s != NULL; s = s->next) |
2989 | 0 | { |
2990 | 0 | struct elf_dyn_relocs *p; |
2991 | |
|
2992 | 0 | for (p = ((struct elf_dyn_relocs *) |
2993 | 0 | elf_section_data (s)->local_dynrel); |
2994 | 0 | p != NULL; |
2995 | 0 | p = p->next) |
2996 | 0 | { |
2997 | 0 | if (! bfd_is_abs_section (p->sec) |
2998 | 0 | && bfd_is_abs_section (p->sec->output_section)) |
2999 | 0 | { |
3000 | | /* Input section has been discarded, either because |
3001 | | it is a copy of a linkonce section or due to |
3002 | | linker script /DISCARD/, so we'll be discarding |
3003 | | the relocs too. */ |
3004 | 0 | } |
3005 | 0 | else if (htab->root.target_os == is_vxworks |
3006 | 0 | && strcmp (p->sec->output_section->name, |
3007 | 0 | ".tls_vars") == 0) |
3008 | 0 | { |
3009 | | /* Relocations in vxworks .tls_vars sections are |
3010 | | handled specially by the loader. */ |
3011 | 0 | } |
3012 | 0 | else if (p->count != 0) |
3013 | 0 | { |
3014 | 0 | srel = elf_section_data (p->sec)->sreloc; |
3015 | 0 | srel->size += p->count * sizeof (Elf32_External_Rela); |
3016 | 0 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
3017 | 0 | { |
3018 | 0 | info->flags |= DF_TEXTREL; |
3019 | 0 | info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), |
3020 | 0 | p->sec->owner, p->sec); |
3021 | 0 | } |
3022 | | |
3023 | | /* If we need relocations, we do not need fixups. */ |
3024 | 0 | if (htab->fdpic_p && !bfd_link_pic (info)) |
3025 | 0 | htab->srofixup->size -= 4 * (p->count - p->pc_count); |
3026 | 0 | } |
3027 | 0 | } |
3028 | 0 | } |
3029 | |
|
3030 | 0 | symtab_hdr = &elf_symtab_hdr (ibfd); |
3031 | 0 | locsymcount = symtab_hdr->sh_info; |
3032 | 0 | s = htab->root.sgot; |
3033 | 0 | srel = htab->root.srelgot; |
3034 | |
|
3035 | 0 | local_got = elf_local_got_refcounts (ibfd); |
3036 | 0 | if (local_got) |
3037 | 0 | { |
3038 | 0 | end_local_got = local_got + locsymcount; |
3039 | 0 | local_got_type = sh_elf_local_got_type (ibfd); |
3040 | 0 | local_funcdesc = sh_elf_local_funcdesc (ibfd); |
3041 | 0 | for (; local_got < end_local_got; ++local_got) |
3042 | 0 | { |
3043 | 0 | if (*local_got > 0) |
3044 | 0 | { |
3045 | 0 | *local_got = s->size; |
3046 | 0 | s->size += 4; |
3047 | 0 | if (*local_got_type == GOT_TLS_GD) |
3048 | 0 | s->size += 4; |
3049 | 0 | if (bfd_link_pic (info)) |
3050 | 0 | srel->size += sizeof (Elf32_External_Rela); |
3051 | 0 | else |
3052 | 0 | htab->srofixup->size += 4; |
3053 | |
|
3054 | 0 | if (*local_got_type == GOT_FUNCDESC) |
3055 | 0 | { |
3056 | 0 | if (local_funcdesc == NULL) |
3057 | 0 | { |
3058 | 0 | bfd_size_type size; |
3059 | |
|
3060 | 0 | size = locsymcount * sizeof (union gotref); |
3061 | 0 | local_funcdesc = (union gotref *) bfd_zalloc (ibfd, |
3062 | 0 | size); |
3063 | 0 | if (local_funcdesc == NULL) |
3064 | 0 | return false; |
3065 | 0 | sh_elf_local_funcdesc (ibfd) = local_funcdesc; |
3066 | 0 | local_funcdesc += (local_got |
3067 | 0 | - elf_local_got_refcounts (ibfd)); |
3068 | 0 | } |
3069 | 0 | local_funcdesc->refcount++; |
3070 | 0 | ++local_funcdesc; |
3071 | 0 | } |
3072 | 0 | } |
3073 | 0 | else |
3074 | 0 | *local_got = (bfd_vma) -1; |
3075 | 0 | ++local_got_type; |
3076 | 0 | } |
3077 | 0 | } |
3078 | | |
3079 | 0 | local_funcdesc = sh_elf_local_funcdesc (ibfd); |
3080 | 0 | if (local_funcdesc) |
3081 | 0 | { |
3082 | 0 | end_local_funcdesc = local_funcdesc + locsymcount; |
3083 | |
|
3084 | 0 | for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc) |
3085 | 0 | { |
3086 | 0 | if (local_funcdesc->refcount > 0) |
3087 | 0 | { |
3088 | 0 | local_funcdesc->offset = htab->sfuncdesc->size; |
3089 | 0 | htab->sfuncdesc->size += 8; |
3090 | 0 | if (!bfd_link_pic (info)) |
3091 | 0 | htab->srofixup->size += 8; |
3092 | 0 | else |
3093 | 0 | htab->srelfuncdesc->size += sizeof (Elf32_External_Rela); |
3094 | 0 | } |
3095 | 0 | else |
3096 | 0 | local_funcdesc->offset = MINUS_ONE; |
3097 | 0 | } |
3098 | 0 | } |
3099 | |
|
3100 | 0 | } |
3101 | | |
3102 | 0 | if (htab->tls_ldm_got.refcount > 0) |
3103 | 0 | { |
3104 | | /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32 |
3105 | | relocs. */ |
3106 | 0 | htab->tls_ldm_got.offset = htab->root.sgot->size; |
3107 | 0 | htab->root.sgot->size += 8; |
3108 | 0 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
3109 | 0 | } |
3110 | 0 | else |
3111 | 0 | htab->tls_ldm_got.offset = -1; |
3112 | | |
3113 | | /* Only the reserved entries should be present. For FDPIC, they go at |
3114 | | the end of .got.plt. */ |
3115 | 0 | if (htab->fdpic_p) |
3116 | 0 | { |
3117 | 0 | BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12); |
3118 | 0 | htab->root.sgotplt->size = 0; |
3119 | 0 | } |
3120 | | |
3121 | | /* Allocate global sym .plt and .got entries, and space for global |
3122 | | sym dynamic relocs. */ |
3123 | 0 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
3124 | | |
3125 | | /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the |
3126 | | end of the FDPIC .got.plt. */ |
3127 | 0 | if (htab->fdpic_p) |
3128 | 0 | { |
3129 | 0 | htab->root.hgot->root.u.def.value = htab->root.sgotplt->size; |
3130 | 0 | htab->root.sgotplt->size += 12; |
3131 | 0 | } |
3132 | | |
3133 | | /* At the very end of the .rofixup section is a pointer to the GOT. */ |
3134 | 0 | if (htab->fdpic_p && htab->srofixup != NULL) |
3135 | 0 | htab->srofixup->size += 4; |
3136 | | |
3137 | | /* We now have determined the sizes of the various dynamic sections. |
3138 | | Allocate memory for them. */ |
3139 | 0 | relocs = false; |
3140 | 0 | for (s = dynobj->sections; s != NULL; s = s->next) |
3141 | 0 | { |
3142 | 0 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
3143 | 0 | continue; |
3144 | | |
3145 | 0 | if (s == htab->root.splt |
3146 | 0 | || s == htab->root.sgot |
3147 | 0 | || s == htab->root.sgotplt |
3148 | 0 | || s == htab->sfuncdesc |
3149 | 0 | || s == htab->srofixup |
3150 | 0 | || s == htab->root.sdynbss) |
3151 | 0 | { |
3152 | | /* Strip this section if we don't need it; see the |
3153 | | comment below. */ |
3154 | 0 | } |
3155 | 0 | else if (startswith (bfd_section_name (s), ".rela")) |
3156 | 0 | { |
3157 | 0 | if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2) |
3158 | 0 | relocs = true; |
3159 | | |
3160 | | /* We use the reloc_count field as a counter if we need |
3161 | | to copy relocs into the output file. */ |
3162 | 0 | s->reloc_count = 0; |
3163 | 0 | } |
3164 | 0 | else |
3165 | 0 | { |
3166 | | /* It's not one of our sections, so don't allocate space. */ |
3167 | 0 | continue; |
3168 | 0 | } |
3169 | | |
3170 | 0 | if (s->size == 0) |
3171 | 0 | { |
3172 | | /* If we don't need this section, strip it from the |
3173 | | output file. This is mostly to handle .rela.bss and |
3174 | | .rela.plt. We must create both sections in |
3175 | | create_dynamic_sections, because they must be created |
3176 | | before the linker maps input sections to output |
3177 | | sections. The linker does that before |
3178 | | adjust_dynamic_symbol is called, and it is that |
3179 | | function which decides whether anything needs to go |
3180 | | into these sections. */ |
3181 | |
|
3182 | 0 | s->flags |= SEC_EXCLUDE; |
3183 | 0 | continue; |
3184 | 0 | } |
3185 | | |
3186 | 0 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3187 | 0 | continue; |
3188 | | |
3189 | | /* Allocate memory for the section contents. We use bfd_zalloc |
3190 | | here in case unused entries are not reclaimed before the |
3191 | | section's contents are written out. This should not happen, |
3192 | | but this way if it does, we get a R_SH_NONE reloc instead |
3193 | | of garbage. */ |
3194 | 0 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
3195 | 0 | if (s->contents == NULL) |
3196 | 0 | return false; |
3197 | 0 | s->alloced = 1; |
3198 | 0 | } |
3199 | | |
3200 | 0 | return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info, |
3201 | 0 | relocs); |
3202 | 0 | } |
3203 | | |
3204 | | /* Add a dynamic relocation to the SRELOC section. */ |
3205 | | |
3206 | | inline static bfd_vma |
3207 | | sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, |
3208 | | int reloc_type, long dynindx, bfd_vma addend) |
3209 | 0 | { |
3210 | 0 | Elf_Internal_Rela outrel; |
3211 | 0 | bfd_vma reloc_offset; |
3212 | |
|
3213 | 0 | outrel.r_offset = offset; |
3214 | 0 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); |
3215 | 0 | outrel.r_addend = addend; |
3216 | |
|
3217 | 0 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela); |
3218 | 0 | BFD_ASSERT (reloc_offset < sreloc->size); |
3219 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
3220 | 0 | sreloc->contents + reloc_offset); |
3221 | 0 | sreloc->reloc_count++; |
3222 | |
|
3223 | 0 | return reloc_offset; |
3224 | 0 | } |
3225 | | |
3226 | | /* Add an FDPIC read-only fixup. */ |
3227 | | |
3228 | | inline static void |
3229 | | sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset) |
3230 | 0 | { |
3231 | 0 | bfd_vma fixup_offset; |
3232 | |
|
3233 | 0 | fixup_offset = srofixup->reloc_count++ * 4; |
3234 | 0 | BFD_ASSERT (fixup_offset < srofixup->size); |
3235 | 0 | bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset); |
3236 | 0 | } |
3237 | | |
3238 | | /* Return the offset of the generated .got section from the |
3239 | | _GLOBAL_OFFSET_TABLE_ symbol. */ |
3240 | | |
3241 | | static bfd_signed_vma |
3242 | | sh_elf_got_offset (struct elf_sh_link_hash_table *htab) |
3243 | 0 | { |
3244 | 0 | return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset |
3245 | 0 | - htab->root.hgot->root.u.def.value); |
3246 | 0 | } |
3247 | | |
3248 | | /* Find the segment number in which OSEC, and output section, is |
3249 | | located. */ |
3250 | | |
3251 | | static unsigned |
3252 | | sh_elf_osec_to_segment (bfd *output_bfd, asection *osec) |
3253 | 0 | { |
3254 | 0 | Elf_Internal_Phdr *p = NULL; |
3255 | |
|
3256 | 0 | if (output_bfd->xvec->flavour == bfd_target_elf_flavour |
3257 | | /* PR ld/17110: Do not look for output segments in an input bfd. */ |
3258 | 0 | && output_bfd->direction != read_direction) |
3259 | 0 | p = _bfd_elf_find_segment_containing_section (output_bfd, osec); |
3260 | | |
3261 | | /* FIXME: Nothing ever says what this index is relative to. The kernel |
3262 | | supplies data in terms of the number of load segments but this is |
3263 | | a phdr index and the first phdr may not be a load segment. */ |
3264 | 0 | return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
3265 | 0 | } |
3266 | | |
3267 | | static bool |
3268 | | sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec) |
3269 | 0 | { |
3270 | 0 | unsigned seg = sh_elf_osec_to_segment (output_bfd, osec); |
3271 | |
|
3272 | 0 | return (seg != (unsigned) -1 |
3273 | 0 | && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W)); |
3274 | 0 | } |
3275 | | |
3276 | | /* Generate the initial contents of a local function descriptor, along |
3277 | | with any relocations or fixups required. */ |
3278 | | static bool |
3279 | | sh_elf_initialize_funcdesc (bfd *output_bfd, |
3280 | | struct bfd_link_info *info, |
3281 | | struct elf_link_hash_entry *h, |
3282 | | bfd_vma offset, |
3283 | | asection *section, |
3284 | | bfd_vma value) |
3285 | 0 | { |
3286 | 0 | struct elf_sh_link_hash_table *htab; |
3287 | 0 | int dynindx; |
3288 | 0 | bfd_vma addr, seg; |
3289 | |
|
3290 | 0 | htab = sh_elf_hash_table (info); |
3291 | | |
3292 | | /* FIXME: The ABI says that the offset to the function goes in the |
3293 | | descriptor, along with the segment index. We're RELA, so it could |
3294 | | go in the reloc instead... */ |
3295 | |
|
3296 | 0 | if (h != NULL && SYMBOL_CALLS_LOCAL (info, h)) |
3297 | 0 | { |
3298 | 0 | section = h->root.u.def.section; |
3299 | 0 | value = h->root.u.def.value; |
3300 | 0 | } |
3301 | |
|
3302 | 0 | if (h == NULL || SYMBOL_CALLS_LOCAL (info, h)) |
3303 | 0 | { |
3304 | 0 | dynindx = elf_section_data (section->output_section)->dynindx; |
3305 | 0 | addr = value + section->output_offset; |
3306 | 0 | seg = sh_elf_osec_to_segment (output_bfd, section->output_section); |
3307 | 0 | } |
3308 | 0 | else |
3309 | 0 | { |
3310 | 0 | BFD_ASSERT (h->dynindx != -1); |
3311 | 0 | dynindx = h->dynindx; |
3312 | 0 | addr = seg = 0; |
3313 | 0 | } |
3314 | |
|
3315 | 0 | if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h)) |
3316 | 0 | { |
3317 | 0 | if (h == NULL || h->root.type != bfd_link_hash_undefweak) |
3318 | 0 | { |
3319 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, |
3320 | 0 | offset |
3321 | 0 | + htab->sfuncdesc->output_section->vma |
3322 | 0 | + htab->sfuncdesc->output_offset); |
3323 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, |
3324 | 0 | offset + 4 |
3325 | 0 | + htab->sfuncdesc->output_section->vma |
3326 | 0 | + htab->sfuncdesc->output_offset); |
3327 | 0 | } |
3328 | | |
3329 | | /* There are no dynamic relocations so fill in the final |
3330 | | address and gp value (barring fixups). */ |
3331 | 0 | addr += section->output_section->vma; |
3332 | 0 | seg = htab->root.hgot->root.u.def.value |
3333 | 0 | + htab->root.hgot->root.u.def.section->output_section->vma |
3334 | 0 | + htab->root.hgot->root.u.def.section->output_offset; |
3335 | 0 | } |
3336 | 0 | else |
3337 | 0 | sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc, |
3338 | 0 | offset |
3339 | 0 | + htab->sfuncdesc->output_section->vma |
3340 | 0 | + htab->sfuncdesc->output_offset, |
3341 | 0 | R_SH_FUNCDESC_VALUE, dynindx, 0); |
3342 | |
|
3343 | 0 | bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset); |
3344 | 0 | bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4); |
3345 | |
|
3346 | 0 | return true; |
3347 | 0 | } |
3348 | | |
3349 | | /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD. |
3350 | | VALUE is the field's value. Return bfd_reloc_ok if successful or an error |
3351 | | otherwise. */ |
3352 | | |
3353 | | static bfd_reloc_status_type |
3354 | | install_movi20_field (bfd *output_bfd, unsigned long relocation, |
3355 | | bfd *input_bfd, asection *input_section, |
3356 | | bfd_byte *contents, bfd_vma offset) |
3357 | 0 | { |
3358 | 0 | unsigned long cur_val; |
3359 | 0 | bfd_byte *addr; |
3360 | 0 | bfd_reloc_status_type r; |
3361 | |
|
3362 | 0 | if (offset > bfd_get_section_limit (input_bfd, input_section)) |
3363 | 0 | return bfd_reloc_outofrange; |
3364 | | |
3365 | 0 | r = bfd_check_overflow (complain_overflow_signed, 20, 0, |
3366 | 0 | bfd_arch_bits_per_address (input_bfd), relocation); |
3367 | 0 | if (r != bfd_reloc_ok) |
3368 | 0 | return r; |
3369 | | |
3370 | 0 | addr = contents + offset; |
3371 | 0 | cur_val = bfd_get_16 (output_bfd, addr); |
3372 | 0 | bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr); |
3373 | 0 | bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2); |
3374 | |
|
3375 | 0 | return bfd_reloc_ok; |
3376 | 0 | } |
3377 | | |
3378 | | /* Relocate an SH ELF section. */ |
3379 | | |
3380 | | static int |
3381 | | sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
3382 | | bfd *input_bfd, asection *input_section, |
3383 | | bfd_byte *contents, Elf_Internal_Rela *relocs, |
3384 | | Elf_Internal_Sym *local_syms, |
3385 | | asection **local_sections) |
3386 | 0 | { |
3387 | 0 | struct elf_sh_link_hash_table *htab; |
3388 | 0 | Elf_Internal_Shdr *symtab_hdr; |
3389 | 0 | struct elf_link_hash_entry **sym_hashes; |
3390 | 0 | Elf_Internal_Rela *rel, *relend; |
3391 | 0 | bfd_vma *local_got_offsets; |
3392 | 0 | asection *sgot = NULL; |
3393 | 0 | asection *sgotplt = NULL; |
3394 | 0 | asection *splt = NULL; |
3395 | 0 | asection *sreloc = NULL; |
3396 | 0 | asection *srelgot = NULL; |
3397 | 0 | bool is_vxworks_tls; |
3398 | 0 | unsigned isec_segment, got_segment, plt_segment, check_segment[2]; |
3399 | 0 | bool fdpic_p = false; |
3400 | |
|
3401 | 0 | if (!is_sh_elf (input_bfd)) |
3402 | 0 | { |
3403 | 0 | bfd_set_error (bfd_error_wrong_format); |
3404 | 0 | return false; |
3405 | 0 | } |
3406 | | |
3407 | 0 | htab = sh_elf_hash_table (info); |
3408 | 0 | if (htab != NULL) |
3409 | 0 | { |
3410 | 0 | sgot = htab->root.sgot; |
3411 | 0 | sgotplt = htab->root.sgotplt; |
3412 | 0 | srelgot = htab->root.srelgot; |
3413 | 0 | splt = htab->root.splt; |
3414 | 0 | fdpic_p = htab->fdpic_p; |
3415 | 0 | } |
3416 | 0 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
3417 | 0 | sym_hashes = elf_sym_hashes (input_bfd); |
3418 | 0 | local_got_offsets = elf_local_got_offsets (input_bfd); |
3419 | |
|
3420 | 0 | isec_segment = sh_elf_osec_to_segment (output_bfd, |
3421 | 0 | input_section->output_section); |
3422 | 0 | if (fdpic_p && sgot) |
3423 | 0 | got_segment = sh_elf_osec_to_segment (output_bfd, |
3424 | 0 | sgot->output_section); |
3425 | 0 | else |
3426 | 0 | got_segment = -1; |
3427 | 0 | if (fdpic_p && splt) |
3428 | 0 | plt_segment = sh_elf_osec_to_segment (output_bfd, |
3429 | 0 | splt->output_section); |
3430 | 0 | else |
3431 | 0 | plt_segment = -1; |
3432 | | |
3433 | | /* We have to handle relocations in vxworks .tls_vars sections |
3434 | | specially, because the dynamic loader is 'weird'. */ |
3435 | 0 | is_vxworks_tls = (htab && htab->root.target_os == is_vxworks && bfd_link_pic (info) |
3436 | 0 | && !strcmp (input_section->output_section->name, |
3437 | 0 | ".tls_vars")); |
3438 | |
|
3439 | 0 | rel = relocs; |
3440 | 0 | relend = relocs + input_section->reloc_count; |
3441 | 0 | for (; rel < relend; rel++) |
3442 | 0 | { |
3443 | 0 | int r_type; |
3444 | 0 | reloc_howto_type *howto; |
3445 | 0 | unsigned long r_symndx; |
3446 | 0 | Elf_Internal_Sym *sym; |
3447 | 0 | asection *sec; |
3448 | 0 | struct elf_link_hash_entry *h; |
3449 | 0 | bfd_vma relocation; |
3450 | 0 | bfd_vma addend = (bfd_vma) 0; |
3451 | 0 | bfd_reloc_status_type r; |
3452 | 0 | bfd_vma off; |
3453 | 0 | enum got_type got_type; |
3454 | 0 | const char *symname = NULL; |
3455 | 0 | bool resolved_to_zero; |
3456 | |
|
3457 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
3458 | |
|
3459 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
3460 | | |
3461 | | /* Many of the relocs are only used for relaxing, and are |
3462 | | handled entirely by the relaxation code. */ |
3463 | 0 | if (r_type >= (int) R_SH_GNU_VTINHERIT |
3464 | 0 | && r_type <= (int) R_SH_LABEL) |
3465 | 0 | continue; |
3466 | 0 | if (r_type == (int) R_SH_NONE) |
3467 | 0 | continue; |
3468 | | |
3469 | 0 | if (r_type < 0 |
3470 | 0 | || r_type >= R_SH_max |
3471 | 0 | || (r_type >= (int) R_SH_FIRST_INVALID_RELOC |
3472 | 0 | && r_type <= (int) R_SH_LAST_INVALID_RELOC) |
3473 | 0 | || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2 |
3474 | 0 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_2) |
3475 | 0 | || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3 |
3476 | 0 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_3) |
3477 | 0 | || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4 |
3478 | 0 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_4) |
3479 | 0 | || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5 |
3480 | 0 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_5) |
3481 | 0 | || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6 |
3482 | 0 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_6)) |
3483 | 0 | { |
3484 | 0 | bfd_set_error (bfd_error_bad_value); |
3485 | 0 | return false; |
3486 | 0 | } |
3487 | | |
3488 | 0 | howto = get_howto_table (output_bfd) + r_type; |
3489 | | |
3490 | | /* For relocs that aren't partial_inplace, we get the addend from |
3491 | | the relocation. */ |
3492 | 0 | if (! howto->partial_inplace) |
3493 | 0 | addend = rel->r_addend; |
3494 | |
|
3495 | 0 | resolved_to_zero = false; |
3496 | 0 | h = NULL; |
3497 | 0 | sym = NULL; |
3498 | 0 | sec = NULL; |
3499 | 0 | check_segment[0] = -1; |
3500 | 0 | check_segment[1] = -1; |
3501 | 0 | if (r_symndx < symtab_hdr->sh_info) |
3502 | 0 | { |
3503 | 0 | sym = local_syms + r_symndx; |
3504 | 0 | sec = local_sections[r_symndx]; |
3505 | |
|
3506 | 0 | symname = bfd_elf_string_from_elf_section |
3507 | 0 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
3508 | 0 | if (symname == NULL || *symname == '\0') |
3509 | 0 | symname = bfd_section_name (sec); |
3510 | |
|
3511 | 0 | relocation = (sec->output_section->vma |
3512 | 0 | + sec->output_offset |
3513 | 0 | + sym->st_value); |
3514 | |
|
3515 | 0 | if (sec != NULL && discarded_section (sec)) |
3516 | | /* Handled below. */ |
3517 | 0 | ; |
3518 | 0 | else if (bfd_link_relocatable (info)) |
3519 | 0 | { |
3520 | | /* This is a relocatable link. We don't have to change |
3521 | | anything, unless the reloc is against a section symbol, |
3522 | | in which case we have to adjust according to where the |
3523 | | section symbol winds up in the output section. */ |
3524 | 0 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
3525 | 0 | { |
3526 | 0 | if (! howto->partial_inplace) |
3527 | 0 | { |
3528 | | /* For relocations with the addend in the |
3529 | | relocation, we need just to update the addend. |
3530 | | All real relocs are of type partial_inplace; this |
3531 | | code is mostly for completeness. */ |
3532 | 0 | rel->r_addend += sec->output_offset; |
3533 | |
|
3534 | 0 | continue; |
3535 | 0 | } |
3536 | | |
3537 | | /* Relocs of type partial_inplace need to pick up the |
3538 | | contents in the contents and add the offset resulting |
3539 | | from the changed location of the section symbol. |
3540 | | Using _bfd_final_link_relocate (e.g. goto |
3541 | | final_link_relocate) here would be wrong, because |
3542 | | relocations marked pc_relative would get the current |
3543 | | location subtracted, and we must only do that at the |
3544 | | final link. */ |
3545 | 0 | r = _bfd_relocate_contents (howto, input_bfd, |
3546 | 0 | sec->output_offset |
3547 | 0 | + sym->st_value, |
3548 | 0 | contents + rel->r_offset); |
3549 | 0 | goto relocation_done; |
3550 | 0 | } |
3551 | | |
3552 | 0 | continue; |
3553 | 0 | } |
3554 | 0 | else if (! howto->partial_inplace) |
3555 | 0 | { |
3556 | 0 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
3557 | 0 | addend = rel->r_addend; |
3558 | 0 | } |
3559 | 0 | else if ((sec->flags & SEC_MERGE) |
3560 | 0 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
3561 | 0 | { |
3562 | 0 | asection *msec; |
3563 | |
|
3564 | 0 | if (howto->rightshift || howto->src_mask != 0xffffffff) |
3565 | 0 | { |
3566 | 0 | _bfd_error_handler |
3567 | | /* xgettext:c-format */ |
3568 | 0 | (_("%pB(%pA+%#" PRIx64 "): " |
3569 | 0 | "%s relocation against SEC_MERGE section"), |
3570 | 0 | input_bfd, input_section, |
3571 | 0 | (uint64_t) rel->r_offset, howto->name); |
3572 | 0 | return false; |
3573 | 0 | } |
3574 | | |
3575 | 0 | addend = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3576 | 0 | msec = sec; |
3577 | 0 | addend = |
3578 | 0 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) |
3579 | 0 | - relocation; |
3580 | 0 | addend += msec->output_section->vma + msec->output_offset; |
3581 | 0 | bfd_put_32 (input_bfd, addend, contents + rel->r_offset); |
3582 | 0 | addend = 0; |
3583 | 0 | } |
3584 | 0 | } |
3585 | 0 | else |
3586 | 0 | { |
3587 | | /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */ |
3588 | |
|
3589 | 0 | relocation = 0; |
3590 | 0 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3591 | 0 | symname = h->root.root.string; |
3592 | 0 | while (h->root.type == bfd_link_hash_indirect |
3593 | 0 | || h->root.type == bfd_link_hash_warning) |
3594 | 0 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
3595 | 0 | if (h->root.type == bfd_link_hash_defined |
3596 | 0 | || h->root.type == bfd_link_hash_defweak) |
3597 | 0 | { |
3598 | 0 | bool dyn; |
3599 | |
|
3600 | 0 | dyn = htab ? htab->root.dynamic_sections_created : false; |
3601 | 0 | sec = h->root.u.def.section; |
3602 | | /* In these cases, we don't need the relocation value. |
3603 | | We check specially because in some obscure cases |
3604 | | sec->output_section will be NULL. */ |
3605 | 0 | if (r_type == R_SH_GOTPC |
3606 | 0 | || r_type == R_SH_GOTPC_LOW16 |
3607 | 0 | || r_type == R_SH_GOTPC_MEDLOW16 |
3608 | 0 | || r_type == R_SH_GOTPC_MEDHI16 |
3609 | 0 | || r_type == R_SH_GOTPC_HI16 |
3610 | 0 | || ((r_type == R_SH_PLT32 |
3611 | 0 | || r_type == R_SH_PLT_LOW16 |
3612 | 0 | || r_type == R_SH_PLT_MEDLOW16 |
3613 | 0 | || r_type == R_SH_PLT_MEDHI16 |
3614 | 0 | || r_type == R_SH_PLT_HI16) |
3615 | 0 | && h->plt.offset != (bfd_vma) -1) |
3616 | 0 | || ((r_type == R_SH_GOT32 |
3617 | 0 | || r_type == R_SH_GOT20 |
3618 | 0 | || r_type == R_SH_GOTFUNCDESC |
3619 | 0 | || r_type == R_SH_GOTFUNCDESC20 |
3620 | 0 | || r_type == R_SH_GOTOFFFUNCDESC |
3621 | 0 | || r_type == R_SH_GOTOFFFUNCDESC20 |
3622 | 0 | || r_type == R_SH_FUNCDESC |
3623 | 0 | || r_type == R_SH_GOT_LOW16 |
3624 | 0 | || r_type == R_SH_GOT_MEDLOW16 |
3625 | 0 | || r_type == R_SH_GOT_MEDHI16 |
3626 | 0 | || r_type == R_SH_GOT_HI16) |
3627 | 0 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
3628 | 0 | bfd_link_pic (info), |
3629 | 0 | h) |
3630 | 0 | && (! bfd_link_pic (info) |
3631 | 0 | || (! info->symbolic && h->dynindx != -1) |
3632 | 0 | || !h->def_regular)) |
3633 | | /* The cases above are those in which relocation is |
3634 | | overwritten in the switch block below. The cases |
3635 | | below are those in which we must defer relocation |
3636 | | to run-time, because we can't resolve absolute |
3637 | | addresses when creating a shared library. */ |
3638 | 0 | || (bfd_link_pic (info) |
3639 | 0 | && ((! info->symbolic && h->dynindx != -1) |
3640 | 0 | || !h->def_regular) |
3641 | 0 | && ((r_type == R_SH_DIR32 |
3642 | 0 | && !h->forced_local) |
3643 | 0 | || (r_type == R_SH_REL32 |
3644 | 0 | && !SYMBOL_CALLS_LOCAL (info, h))) |
3645 | 0 | && ((input_section->flags & SEC_ALLOC) != 0 |
3646 | | /* DWARF will emit R_SH_DIR32 relocations in its |
3647 | | sections against symbols defined externally |
3648 | | in shared libraries. We can't do anything |
3649 | | with them here. */ |
3650 | 0 | || ((input_section->flags & SEC_DEBUGGING) != 0 |
3651 | 0 | && h->def_dynamic))) |
3652 | | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
3653 | | sections because such sections are not SEC_ALLOC and |
3654 | | thus ld.so will not process them. */ |
3655 | 0 | || (sec->output_section == NULL |
3656 | 0 | && ((input_section->flags & SEC_DEBUGGING) != 0 |
3657 | 0 | && h->def_dynamic)) |
3658 | 0 | || (sec->output_section == NULL |
3659 | 0 | && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE |
3660 | 0 | || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD))) |
3661 | 0 | ; |
3662 | 0 | else if (sec->output_section != NULL) |
3663 | 0 | relocation = (h->root.u.def.value |
3664 | 0 | + sec->output_section->vma |
3665 | 0 | + sec->output_offset); |
3666 | 0 | else if (!bfd_link_relocatable (info) |
3667 | 0 | && (_bfd_elf_section_offset (output_bfd, info, |
3668 | 0 | input_section, |
3669 | 0 | rel->r_offset) |
3670 | 0 | != (bfd_vma) -1)) |
3671 | 0 | { |
3672 | 0 | _bfd_error_handler |
3673 | | /* xgettext:c-format */ |
3674 | 0 | (_("%pB(%pA+%#" PRIx64 "): " |
3675 | 0 | "unresolvable %s relocation against symbol `%s'"), |
3676 | 0 | input_bfd, |
3677 | 0 | input_section, |
3678 | 0 | (uint64_t) rel->r_offset, |
3679 | 0 | howto->name, |
3680 | 0 | h->root.root.string); |
3681 | 0 | return false; |
3682 | 0 | } |
3683 | 0 | } |
3684 | 0 | else if (h->root.type == bfd_link_hash_undefweak) |
3685 | 0 | resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h); |
3686 | 0 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
3687 | 0 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
3688 | 0 | ; |
3689 | 0 | else if (!bfd_link_relocatable (info)) |
3690 | 0 | info->callbacks->undefined_symbol |
3691 | 0 | (info, h->root.root.string, input_bfd, input_section, |
3692 | 0 | rel->r_offset, |
3693 | 0 | (info->unresolved_syms_in_objects == RM_DIAGNOSE |
3694 | 0 | && !info->warn_unresolved_syms) |
3695 | 0 | || ELF_ST_VISIBILITY (h->other)); |
3696 | 0 | } |
3697 | | |
3698 | 0 | if (sec != NULL && discarded_section (sec)) |
3699 | 0 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
3700 | 0 | rel, 1, relend, howto, 0, contents); |
3701 | |
|
3702 | 0 | if (bfd_link_relocatable (info)) |
3703 | 0 | continue; |
3704 | | |
3705 | | /* Check for inter-segment relocations in FDPIC files. Most |
3706 | | relocations connect the relocation site to the location of |
3707 | | the target symbol, but there are some exceptions below. */ |
3708 | 0 | check_segment[0] = isec_segment; |
3709 | 0 | if (sec != NULL) |
3710 | 0 | check_segment[1] = sh_elf_osec_to_segment (output_bfd, |
3711 | 0 | sec->output_section); |
3712 | 0 | else |
3713 | 0 | check_segment[1] = -1; |
3714 | |
|
3715 | 0 | switch ((int) r_type) |
3716 | 0 | { |
3717 | 0 | final_link_relocate: |
3718 | | /* COFF relocs don't use the addend. The addend is used for |
3719 | | R_SH_DIR32 to be compatible with other compilers. */ |
3720 | 0 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3721 | 0 | contents, rel->r_offset, |
3722 | 0 | relocation, addend); |
3723 | 0 | break; |
3724 | | |
3725 | 0 | case R_SH_IND12W: |
3726 | 0 | goto final_link_relocate; |
3727 | | |
3728 | 0 | case R_SH_DIR8WPN: |
3729 | 0 | case R_SH_DIR8WPZ: |
3730 | 0 | case R_SH_DIR8WPL: |
3731 | | /* If the reloc is against the start of this section, then |
3732 | | the assembler has already taken care of it and the reloc |
3733 | | is here only to assist in relaxing. If the reloc is not |
3734 | | against the start of this section, then it's against an |
3735 | | external symbol and we must deal with it ourselves. */ |
3736 | 0 | if (input_section->output_section->vma + input_section->output_offset |
3737 | 0 | != relocation) |
3738 | 0 | { |
3739 | 0 | int disp = (relocation |
3740 | 0 | - input_section->output_section->vma |
3741 | 0 | - input_section->output_offset |
3742 | 0 | - rel->r_offset); |
3743 | 0 | int mask = 0; |
3744 | 0 | switch (r_type) |
3745 | 0 | { |
3746 | 0 | case R_SH_DIR8WPN: |
3747 | 0 | case R_SH_DIR8WPZ: mask = 1; break; |
3748 | 0 | case R_SH_DIR8WPL: mask = 3; break; |
3749 | 0 | default: mask = 0; break; |
3750 | 0 | } |
3751 | 0 | if (disp & mask) |
3752 | 0 | { |
3753 | 0 | _bfd_error_handler |
3754 | | /* xgettext:c-format */ |
3755 | 0 | (_("%pB: %#" PRIx64 ": fatal: " |
3756 | 0 | "unaligned branch target for relax-support relocation"), |
3757 | 0 | input_section->owner, |
3758 | 0 | (uint64_t) rel->r_offset); |
3759 | 0 | bfd_set_error (bfd_error_bad_value); |
3760 | 0 | return false; |
3761 | 0 | } |
3762 | 0 | relocation -= 4; |
3763 | 0 | goto final_link_relocate; |
3764 | 0 | } |
3765 | 0 | r = bfd_reloc_ok; |
3766 | 0 | break; |
3767 | | |
3768 | 0 | default: |
3769 | 0 | bfd_set_error (bfd_error_bad_value); |
3770 | 0 | return false; |
3771 | | |
3772 | 0 | case R_SH_DIR16: |
3773 | 0 | case R_SH_DIR8: |
3774 | 0 | case R_SH_DIR8U: |
3775 | 0 | case R_SH_DIR8S: |
3776 | 0 | case R_SH_DIR4U: |
3777 | 0 | goto final_link_relocate; |
3778 | | |
3779 | 0 | case R_SH_DIR8UL: |
3780 | 0 | case R_SH_DIR4UL: |
3781 | 0 | if (relocation & 3) |
3782 | 0 | { |
3783 | 0 | _bfd_error_handler |
3784 | | /* xgettext:c-format */ |
3785 | 0 | (_("%pB: %#" PRIx64 ": fatal: " |
3786 | 0 | "unaligned %s relocation %#" PRIx64), |
3787 | 0 | input_section->owner, (uint64_t) rel->r_offset, |
3788 | 0 | howto->name, (uint64_t) relocation); |
3789 | 0 | bfd_set_error (bfd_error_bad_value); |
3790 | 0 | return false; |
3791 | 0 | } |
3792 | 0 | goto final_link_relocate; |
3793 | | |
3794 | 0 | case R_SH_DIR8UW: |
3795 | 0 | case R_SH_DIR8SW: |
3796 | 0 | case R_SH_DIR4UW: |
3797 | 0 | if (relocation & 1) |
3798 | 0 | { |
3799 | 0 | _bfd_error_handler |
3800 | | /* xgettext:c-format */ |
3801 | 0 | (_("%pB: %#" PRIx64 ": fatal: " |
3802 | 0 | "unaligned %s relocation %#" PRIx64 ""), |
3803 | 0 | input_section->owner, |
3804 | 0 | (uint64_t) rel->r_offset, howto->name, |
3805 | 0 | (uint64_t) relocation); |
3806 | 0 | bfd_set_error (bfd_error_bad_value); |
3807 | 0 | return false; |
3808 | 0 | } |
3809 | 0 | goto final_link_relocate; |
3810 | | |
3811 | 0 | case R_SH_PSHA: |
3812 | 0 | if ((signed int)relocation < -32 |
3813 | 0 | || (signed int)relocation > 32) |
3814 | 0 | { |
3815 | 0 | _bfd_error_handler |
3816 | | /* xgettext:c-format */ |
3817 | 0 | (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64 |
3818 | 0 | " not in range -32..32"), |
3819 | 0 | input_section->owner, |
3820 | 0 | (uint64_t) rel->r_offset, |
3821 | 0 | (int64_t) relocation); |
3822 | 0 | bfd_set_error (bfd_error_bad_value); |
3823 | 0 | return false; |
3824 | 0 | } |
3825 | 0 | goto final_link_relocate; |
3826 | | |
3827 | 0 | case R_SH_PSHL: |
3828 | 0 | if ((signed int)relocation < -16 |
3829 | 0 | || (signed int)relocation > 16) |
3830 | 0 | { |
3831 | 0 | _bfd_error_handler |
3832 | | /* xgettext:c-format */ |
3833 | 0 | (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64 |
3834 | 0 | " not in range -32..32"), |
3835 | 0 | input_section->owner, |
3836 | 0 | (uint64_t) rel->r_offset, |
3837 | 0 | (int64_t) relocation); |
3838 | 0 | bfd_set_error (bfd_error_bad_value); |
3839 | 0 | return false; |
3840 | 0 | } |
3841 | 0 | goto final_link_relocate; |
3842 | | |
3843 | 0 | case R_SH_DIR32: |
3844 | 0 | case R_SH_REL32: |
3845 | 0 | if (bfd_link_pic (info) |
3846 | 0 | && (h == NULL |
3847 | 0 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
3848 | 0 | && !resolved_to_zero) |
3849 | 0 | || h->root.type != bfd_link_hash_undefweak) |
3850 | 0 | && r_symndx != STN_UNDEF |
3851 | 0 | && (input_section->flags & SEC_ALLOC) != 0 |
3852 | 0 | && !is_vxworks_tls |
3853 | 0 | && (r_type == R_SH_DIR32 |
3854 | 0 | || !SYMBOL_CALLS_LOCAL (info, h))) |
3855 | 0 | { |
3856 | 0 | Elf_Internal_Rela outrel; |
3857 | 0 | bfd_byte *loc; |
3858 | 0 | bool skip, relocate; |
3859 | | |
3860 | | /* When generating a shared object, these relocations |
3861 | | are copied into the output file to be resolved at run |
3862 | | time. */ |
3863 | |
|
3864 | 0 | if (sreloc == NULL) |
3865 | 0 | { |
3866 | 0 | sreloc = _bfd_elf_get_dynamic_reloc_section |
3867 | 0 | (input_bfd, input_section, /*rela?*/ true); |
3868 | 0 | if (sreloc == NULL) |
3869 | 0 | return false; |
3870 | 0 | } |
3871 | | |
3872 | 0 | skip = false; |
3873 | 0 | relocate = false; |
3874 | |
|
3875 | 0 | outrel.r_offset = |
3876 | 0 | _bfd_elf_section_offset (output_bfd, info, input_section, |
3877 | 0 | rel->r_offset); |
3878 | 0 | if (outrel.r_offset == (bfd_vma) -1) |
3879 | 0 | skip = true; |
3880 | 0 | else if (outrel.r_offset == (bfd_vma) -2) |
3881 | 0 | skip = true, relocate = true; |
3882 | 0 | outrel.r_offset += (input_section->output_section->vma |
3883 | 0 | + input_section->output_offset); |
3884 | |
|
3885 | 0 | if (skip) |
3886 | 0 | memset (&outrel, 0, sizeof outrel); |
3887 | 0 | else if (r_type == R_SH_REL32) |
3888 | 0 | { |
3889 | 0 | BFD_ASSERT (h != NULL && h->dynindx != -1); |
3890 | 0 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32); |
3891 | 0 | outrel.r_addend |
3892 | 0 | = (howto->partial_inplace |
3893 | 0 | ? bfd_get_32 (input_bfd, contents + rel->r_offset) |
3894 | 0 | : addend); |
3895 | 0 | } |
3896 | 0 | else if (fdpic_p |
3897 | 0 | && (h == NULL |
3898 | 0 | || ((info->symbolic || h->dynindx == -1) |
3899 | 0 | && h->def_regular))) |
3900 | 0 | { |
3901 | 0 | int dynindx; |
3902 | |
|
3903 | 0 | BFD_ASSERT (sec != NULL); |
3904 | 0 | BFD_ASSERT (sec->output_section != NULL); |
3905 | 0 | dynindx = elf_section_data (sec->output_section)->dynindx; |
3906 | 0 | outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32); |
3907 | 0 | outrel.r_addend = relocation; |
3908 | 0 | outrel.r_addend |
3909 | 0 | += (howto->partial_inplace |
3910 | 0 | ? bfd_get_32 (input_bfd, contents + rel->r_offset) |
3911 | 0 | : addend); |
3912 | 0 | outrel.r_addend -= sec->output_section->vma; |
3913 | 0 | } |
3914 | 0 | else |
3915 | 0 | { |
3916 | | /* h->dynindx may be -1 if this symbol was marked to |
3917 | | become local. */ |
3918 | 0 | if (h == NULL |
3919 | 0 | || ((info->symbolic || h->dynindx == -1) |
3920 | 0 | && h->def_regular)) |
3921 | 0 | { |
3922 | 0 | relocate = howto->partial_inplace; |
3923 | 0 | outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); |
3924 | 0 | } |
3925 | 0 | else |
3926 | 0 | { |
3927 | 0 | BFD_ASSERT (h->dynindx != -1); |
3928 | 0 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32); |
3929 | 0 | } |
3930 | 0 | outrel.r_addend = relocation; |
3931 | 0 | outrel.r_addend |
3932 | 0 | += (howto->partial_inplace |
3933 | 0 | ? bfd_get_32 (input_bfd, contents + rel->r_offset) |
3934 | 0 | : addend); |
3935 | 0 | } |
3936 | |
|
3937 | 0 | loc = sreloc->contents; |
3938 | 0 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
3939 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
3940 | |
|
3941 | 0 | check_segment[0] = check_segment[1] = -1; |
3942 | | |
3943 | | /* If this reloc is against an external symbol, we do |
3944 | | not want to fiddle with the addend. Otherwise, we |
3945 | | need to include the symbol value so that it becomes |
3946 | | an addend for the dynamic reloc. */ |
3947 | 0 | if (! relocate) |
3948 | 0 | continue; |
3949 | 0 | } |
3950 | 0 | else if (fdpic_p && !bfd_link_pic (info) |
3951 | 0 | && r_type == R_SH_DIR32 |
3952 | 0 | && (input_section->flags & SEC_ALLOC) != 0) |
3953 | 0 | { |
3954 | 0 | bfd_vma offset; |
3955 | |
|
3956 | 0 | BFD_ASSERT (htab); |
3957 | |
|
3958 | 0 | if (sh_elf_osec_readonly_p (output_bfd, |
3959 | 0 | input_section->output_section)) |
3960 | 0 | { |
3961 | 0 | _bfd_error_handler |
3962 | | /* xgettext:c-format */ |
3963 | 0 | (_("%pB(%pA+%#" PRIx64 "): " |
3964 | 0 | "cannot emit fixup to `%s' in read-only section"), |
3965 | 0 | input_bfd, |
3966 | 0 | input_section, |
3967 | 0 | (uint64_t) rel->r_offset, |
3968 | 0 | symname); |
3969 | 0 | return false; |
3970 | 0 | } |
3971 | | |
3972 | 0 | offset = _bfd_elf_section_offset (output_bfd, info, |
3973 | 0 | input_section, rel->r_offset); |
3974 | 0 | if (offset != (bfd_vma)-1) |
3975 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, |
3976 | 0 | input_section->output_section->vma |
3977 | 0 | + input_section->output_offset |
3978 | 0 | + rel->r_offset); |
3979 | |
|
3980 | 0 | check_segment[0] = check_segment[1] = -1; |
3981 | 0 | } |
3982 | | /* We don't want warnings for non-NULL tests on undefined weak |
3983 | | symbols. */ |
3984 | 0 | else if (r_type == R_SH_REL32 |
3985 | 0 | && h |
3986 | 0 | && h->root.type == bfd_link_hash_undefweak) |
3987 | 0 | check_segment[0] = check_segment[1] = -1; |
3988 | 0 | goto final_link_relocate; |
3989 | | |
3990 | 0 | case R_SH_GOTPLT32: |
3991 | | /* Relocation is to the entry for this symbol in the |
3992 | | procedure linkage table. */ |
3993 | |
|
3994 | 0 | if (h == NULL |
3995 | 0 | || h->forced_local |
3996 | 0 | || ! bfd_link_pic (info) |
3997 | 0 | || info->symbolic |
3998 | 0 | || h->dynindx == -1 |
3999 | 0 | || h->plt.offset == (bfd_vma) -1 |
4000 | 0 | || h->got.offset != (bfd_vma) -1) |
4001 | 0 | goto force_got; |
4002 | | |
4003 | | /* Relocation is to the entry for this symbol in the global |
4004 | | offset table extension for the procedure linkage table. */ |
4005 | | |
4006 | 0 | BFD_ASSERT (htab); |
4007 | 0 | BFD_ASSERT (sgotplt != NULL); |
4008 | 0 | relocation = (sgotplt->output_offset |
4009 | 0 | + (get_plt_index (htab->plt_info, h->plt.offset) |
4010 | 0 | + 3) * 4); |
4011 | |
|
4012 | | #ifdef GOT_BIAS |
4013 | | relocation -= GOT_BIAS; |
4014 | | #endif |
4015 | |
|
4016 | 0 | goto final_link_relocate; |
4017 | | |
4018 | 0 | force_got: |
4019 | 0 | case R_SH_GOT32: |
4020 | 0 | case R_SH_GOT20: |
4021 | | /* Relocation is to the entry for this symbol in the global |
4022 | | offset table. */ |
4023 | |
|
4024 | 0 | BFD_ASSERT (htab); |
4025 | 0 | BFD_ASSERT (sgot != NULL); |
4026 | 0 | check_segment[0] = check_segment[1] = -1; |
4027 | |
|
4028 | 0 | if (h != NULL) |
4029 | 0 | { |
4030 | 0 | bool dyn; |
4031 | |
|
4032 | 0 | off = h->got.offset; |
4033 | 0 | BFD_ASSERT (off != (bfd_vma) -1); |
4034 | |
|
4035 | 0 | dyn = htab->root.dynamic_sections_created; |
4036 | 0 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
4037 | 0 | bfd_link_pic (info), |
4038 | 0 | h) |
4039 | 0 | || (bfd_link_pic (info) |
4040 | 0 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4041 | 0 | || ((ELF_ST_VISIBILITY (h->other) |
4042 | 0 | || resolved_to_zero) |
4043 | 0 | && h->root.type == bfd_link_hash_undefweak)) |
4044 | 0 | { |
4045 | | /* This is actually a static link, or it is a |
4046 | | -Bsymbolic link and the symbol is defined |
4047 | | locally, or the symbol was forced to be local |
4048 | | because of a version file. We must initialize |
4049 | | this entry in the global offset table. Since the |
4050 | | offset must always be a multiple of 4, we use the |
4051 | | least significant bit to record whether we have |
4052 | | initialized it already. |
4053 | | |
4054 | | When doing a dynamic link, we create a .rela.got |
4055 | | relocation entry to initialize the value. This |
4056 | | is done in the finish_dynamic_symbol routine. */ |
4057 | 0 | if ((off & 1) != 0) |
4058 | 0 | off &= ~1; |
4059 | 0 | else |
4060 | 0 | { |
4061 | 0 | bfd_put_32 (output_bfd, relocation, |
4062 | 0 | sgot->contents + off); |
4063 | 0 | h->got.offset |= 1; |
4064 | | |
4065 | | /* If we initialize the GOT entry here with a valid |
4066 | | symbol address, also add a fixup. */ |
4067 | 0 | if (fdpic_p && !bfd_link_pic (info) |
4068 | 0 | && sh_elf_hash_entry (h)->got_type == GOT_NORMAL |
4069 | 0 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
4070 | 0 | || h->root.type != bfd_link_hash_undefweak)) |
4071 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, |
4072 | 0 | sgot->output_section->vma |
4073 | 0 | + sgot->output_offset |
4074 | 0 | + off); |
4075 | 0 | } |
4076 | 0 | } |
4077 | |
|
4078 | 0 | relocation = sh_elf_got_offset (htab) + off; |
4079 | 0 | } |
4080 | 0 | else |
4081 | 0 | { |
4082 | 0 | BFD_ASSERT (local_got_offsets != NULL |
4083 | 0 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
4084 | |
|
4085 | 0 | off = local_got_offsets[r_symndx]; |
4086 | | |
4087 | | /* The offset must always be a multiple of 4. We use |
4088 | | the least significant bit to record whether we have |
4089 | | already generated the necessary reloc. */ |
4090 | 0 | if ((off & 1) != 0) |
4091 | 0 | off &= ~1; |
4092 | 0 | else |
4093 | 0 | { |
4094 | 0 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
4095 | |
|
4096 | 0 | if (bfd_link_pic (info)) |
4097 | 0 | { |
4098 | 0 | Elf_Internal_Rela outrel; |
4099 | 0 | bfd_byte *loc; |
4100 | |
|
4101 | 0 | outrel.r_offset = (sgot->output_section->vma |
4102 | 0 | + sgot->output_offset |
4103 | 0 | + off); |
4104 | 0 | if (fdpic_p) |
4105 | 0 | { |
4106 | 0 | int dynindx |
4107 | 0 | = elf_section_data (sec->output_section)->dynindx; |
4108 | 0 | outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32); |
4109 | 0 | outrel.r_addend = relocation; |
4110 | 0 | outrel.r_addend -= sec->output_section->vma; |
4111 | 0 | } |
4112 | 0 | else |
4113 | 0 | { |
4114 | 0 | outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); |
4115 | 0 | outrel.r_addend = relocation; |
4116 | 0 | } |
4117 | 0 | loc = srelgot->contents; |
4118 | 0 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); |
4119 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
4120 | 0 | } |
4121 | 0 | else if (fdpic_p |
4122 | 0 | && (sh_elf_local_got_type (input_bfd) [r_symndx] |
4123 | 0 | == GOT_NORMAL)) |
4124 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, |
4125 | 0 | sgot->output_section->vma |
4126 | 0 | + sgot->output_offset |
4127 | 0 | + off); |
4128 | |
|
4129 | 0 | local_got_offsets[r_symndx] |= 1; |
4130 | 0 | } |
4131 | |
|
4132 | 0 | relocation = sh_elf_got_offset (htab) + off; |
4133 | 0 | } |
4134 | |
|
4135 | | #ifdef GOT_BIAS |
4136 | | relocation -= GOT_BIAS; |
4137 | | #endif |
4138 | |
|
4139 | 0 | if (r_type == R_SH_GOT20) |
4140 | 0 | { |
4141 | 0 | r = install_movi20_field (output_bfd, relocation + addend, |
4142 | 0 | input_bfd, input_section, contents, |
4143 | 0 | rel->r_offset); |
4144 | 0 | break; |
4145 | 0 | } |
4146 | 0 | else |
4147 | 0 | goto final_link_relocate; |
4148 | | |
4149 | 0 | case R_SH_GOTOFF: |
4150 | 0 | case R_SH_GOTOFF20: |
4151 | | /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which |
4152 | | we place at the start of the .got.plt section. This is the same |
4153 | | as the start of the output .got section, unless there are function |
4154 | | descriptors in front of it. */ |
4155 | 0 | BFD_ASSERT (htab); |
4156 | 0 | BFD_ASSERT (sgotplt != NULL); |
4157 | 0 | check_segment[0] = got_segment; |
4158 | 0 | relocation -= sgotplt->output_section->vma + sgotplt->output_offset |
4159 | 0 | + htab->root.hgot->root.u.def.value; |
4160 | |
|
4161 | | #ifdef GOT_BIAS |
4162 | | relocation -= GOT_BIAS; |
4163 | | #endif |
4164 | |
|
4165 | 0 | addend = rel->r_addend; |
4166 | |
|
4167 | 0 | if (r_type == R_SH_GOTOFF20) |
4168 | 0 | { |
4169 | 0 | r = install_movi20_field (output_bfd, relocation + addend, |
4170 | 0 | input_bfd, input_section, contents, |
4171 | 0 | rel->r_offset); |
4172 | 0 | break; |
4173 | 0 | } |
4174 | 0 | else |
4175 | 0 | goto final_link_relocate; |
4176 | | |
4177 | 0 | case R_SH_GOTPC: |
4178 | | /* Use global offset table as symbol value. */ |
4179 | |
|
4180 | 0 | BFD_ASSERT (sgotplt != NULL); |
4181 | 0 | relocation = sgotplt->output_section->vma + sgotplt->output_offset; |
4182 | |
|
4183 | | #ifdef GOT_BIAS |
4184 | | relocation += GOT_BIAS; |
4185 | | #endif |
4186 | |
|
4187 | 0 | addend = rel->r_addend; |
4188 | |
|
4189 | 0 | goto final_link_relocate; |
4190 | | |
4191 | 0 | case R_SH_PLT32: |
4192 | | /* Relocation is to the entry for this symbol in the |
4193 | | procedure linkage table. */ |
4194 | | |
4195 | | /* Resolve a PLT reloc against a local symbol directly, |
4196 | | without using the procedure linkage table. */ |
4197 | 0 | if (h == NULL) |
4198 | 0 | goto final_link_relocate; |
4199 | | |
4200 | | /* We don't want to warn on calls to undefined weak symbols, |
4201 | | as calls to them must be protected by non-NULL tests |
4202 | | anyway, and unprotected calls would invoke undefined |
4203 | | behavior. */ |
4204 | 0 | if (h->root.type == bfd_link_hash_undefweak) |
4205 | 0 | check_segment[0] = check_segment[1] = -1; |
4206 | |
|
4207 | 0 | if (h->forced_local) |
4208 | 0 | goto final_link_relocate; |
4209 | | |
4210 | 0 | if (h->plt.offset == (bfd_vma) -1) |
4211 | 0 | { |
4212 | | /* We didn't make a PLT entry for this symbol. This |
4213 | | happens when statically linking PIC code, or when |
4214 | | using -Bsymbolic. */ |
4215 | 0 | goto final_link_relocate; |
4216 | 0 | } |
4217 | | |
4218 | 0 | BFD_ASSERT (splt != NULL); |
4219 | 0 | check_segment[1] = plt_segment; |
4220 | 0 | relocation = (splt->output_section->vma |
4221 | 0 | + splt->output_offset |
4222 | 0 | + h->plt.offset); |
4223 | |
|
4224 | 0 | addend = rel->r_addend; |
4225 | |
|
4226 | 0 | goto final_link_relocate; |
4227 | | |
4228 | | /* Relocation is to the canonical function descriptor for this |
4229 | | symbol, possibly via the GOT. Initialize the GOT |
4230 | | entry and function descriptor if necessary. */ |
4231 | 0 | case R_SH_GOTFUNCDESC: |
4232 | 0 | case R_SH_GOTFUNCDESC20: |
4233 | 0 | case R_SH_FUNCDESC: |
4234 | 0 | { |
4235 | 0 | int dynindx = -1; |
4236 | 0 | asection *reloc_section; |
4237 | 0 | bfd_vma reloc_offset; |
4238 | 0 | int reloc_type = R_SH_FUNCDESC; |
4239 | |
|
4240 | 0 | BFD_ASSERT (htab); |
4241 | |
|
4242 | 0 | check_segment[0] = check_segment[1] = -1; |
4243 | | |
4244 | | /* FIXME: See what FRV does for global symbols in the |
4245 | | executable, with --export-dynamic. Do they need ld.so |
4246 | | to allocate official descriptors? See what this code |
4247 | | does. */ |
4248 | |
|
4249 | 0 | relocation = 0; |
4250 | 0 | addend = 0; |
4251 | |
|
4252 | 0 | if (r_type == R_SH_FUNCDESC) |
4253 | 0 | { |
4254 | 0 | reloc_section = input_section; |
4255 | 0 | reloc_offset = rel->r_offset; |
4256 | 0 | } |
4257 | 0 | else |
4258 | 0 | { |
4259 | 0 | reloc_section = sgot; |
4260 | |
|
4261 | 0 | if (h != NULL) |
4262 | 0 | reloc_offset = h->got.offset; |
4263 | 0 | else |
4264 | 0 | { |
4265 | 0 | BFD_ASSERT (local_got_offsets != NULL); |
4266 | 0 | reloc_offset = local_got_offsets[r_symndx]; |
4267 | 0 | } |
4268 | 0 | BFD_ASSERT (reloc_offset != MINUS_ONE); |
4269 | |
|
4270 | 0 | if (reloc_offset & 1) |
4271 | 0 | { |
4272 | 0 | reloc_offset &= ~1; |
4273 | 0 | goto funcdesc_done_got; |
4274 | 0 | } |
4275 | 0 | } |
4276 | | |
4277 | 0 | if (h && h->root.type == bfd_link_hash_undefweak |
4278 | 0 | && (SYMBOL_CALLS_LOCAL (info, h) |
4279 | 0 | || !htab->root.dynamic_sections_created)) |
4280 | | /* Undefined weak symbol which will not be dynamically |
4281 | | resolved later; leave it at zero. */ |
4282 | 0 | goto funcdesc_leave_zero; |
4283 | 0 | else if (SYMBOL_CALLS_LOCAL (info, h) |
4284 | 0 | && ! SYMBOL_FUNCDESC_LOCAL (info, h)) |
4285 | 0 | { |
4286 | | /* If the symbol needs a non-local function descriptor |
4287 | | but binds locally (i.e., its visibility is |
4288 | | protected), emit a dynamic relocation decayed to |
4289 | | section+offset. This is an optimization; the dynamic |
4290 | | linker would resolve our function descriptor request |
4291 | | to our copy of the function anyway. */ |
4292 | 0 | dynindx = elf_section_data (h->root.u.def.section |
4293 | 0 | ->output_section)->dynindx; |
4294 | 0 | relocation += h->root.u.def.section->output_offset |
4295 | 0 | + h->root.u.def.value; |
4296 | 0 | } |
4297 | 0 | else if (! SYMBOL_FUNCDESC_LOCAL (info, h)) |
4298 | 0 | { |
4299 | | /* If the symbol is dynamic and there will be dynamic |
4300 | | symbol resolution because we are or are linked with a |
4301 | | shared library, emit a FUNCDESC relocation such that |
4302 | | the dynamic linker will allocate the function |
4303 | | descriptor. */ |
4304 | 0 | BFD_ASSERT (h->dynindx != -1); |
4305 | 0 | dynindx = h->dynindx; |
4306 | 0 | } |
4307 | 0 | else |
4308 | 0 | { |
4309 | 0 | bfd_vma offset; |
4310 | | |
4311 | | /* Otherwise, we know we have a private function |
4312 | | descriptor, so reference it directly. */ |
4313 | 0 | reloc_type = R_SH_DIR32; |
4314 | 0 | dynindx = elf_section_data (htab->sfuncdesc |
4315 | 0 | ->output_section)->dynindx; |
4316 | |
|
4317 | 0 | if (h) |
4318 | 0 | { |
4319 | 0 | offset = sh_elf_hash_entry (h)->funcdesc.offset; |
4320 | 0 | BFD_ASSERT (offset != MINUS_ONE); |
4321 | 0 | if ((offset & 1) == 0) |
4322 | 0 | { |
4323 | 0 | if (!sh_elf_initialize_funcdesc (output_bfd, info, h, |
4324 | 0 | offset, NULL, 0)) |
4325 | 0 | return false; |
4326 | 0 | sh_elf_hash_entry (h)->funcdesc.offset |= 1; |
4327 | 0 | } |
4328 | 0 | } |
4329 | 0 | else |
4330 | 0 | { |
4331 | 0 | union gotref *local_funcdesc; |
4332 | |
|
4333 | 0 | local_funcdesc = sh_elf_local_funcdesc (input_bfd); |
4334 | 0 | offset = local_funcdesc[r_symndx].offset; |
4335 | 0 | BFD_ASSERT (offset != MINUS_ONE); |
4336 | 0 | if ((offset & 1) == 0) |
4337 | 0 | { |
4338 | 0 | if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL, |
4339 | 0 | offset, sec, |
4340 | 0 | sym->st_value)) |
4341 | 0 | return false; |
4342 | 0 | local_funcdesc[r_symndx].offset |= 1; |
4343 | 0 | } |
4344 | 0 | } |
4345 | | |
4346 | 0 | relocation = htab->sfuncdesc->output_offset + (offset & ~1); |
4347 | 0 | } |
4348 | | |
4349 | 0 | if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h)) |
4350 | 0 | { |
4351 | 0 | bfd_vma offset; |
4352 | |
|
4353 | 0 | if (sh_elf_osec_readonly_p (output_bfd, |
4354 | 0 | reloc_section->output_section)) |
4355 | 0 | { |
4356 | 0 | _bfd_error_handler |
4357 | | /* xgettext:c-format */ |
4358 | 0 | (_("%pB(%pA+%#" PRIx64 "): " |
4359 | 0 | "cannot emit fixup to `%s' in read-only section"), |
4360 | 0 | input_bfd, |
4361 | 0 | input_section, |
4362 | 0 | (uint64_t) rel->r_offset, |
4363 | 0 | symname); |
4364 | 0 | return false; |
4365 | 0 | } |
4366 | | |
4367 | 0 | offset = _bfd_elf_section_offset (output_bfd, info, |
4368 | 0 | reloc_section, reloc_offset); |
4369 | |
|
4370 | 0 | if (offset != (bfd_vma)-1) |
4371 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, |
4372 | 0 | offset |
4373 | 0 | + reloc_section->output_section->vma |
4374 | 0 | + reloc_section->output_offset); |
4375 | 0 | } |
4376 | 0 | else if ((reloc_section->output_section->flags |
4377 | 0 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
4378 | 0 | { |
4379 | 0 | bfd_vma offset; |
4380 | |
|
4381 | 0 | if (sh_elf_osec_readonly_p (output_bfd, |
4382 | 0 | reloc_section->output_section)) |
4383 | 0 | { |
4384 | 0 | info->callbacks->warning |
4385 | 0 | (info, |
4386 | 0 | _("cannot emit dynamic relocations in read-only section"), |
4387 | 0 | symname, input_bfd, reloc_section, reloc_offset); |
4388 | 0 | return false; |
4389 | 0 | } |
4390 | | |
4391 | 0 | offset = _bfd_elf_section_offset (output_bfd, info, |
4392 | 0 | reloc_section, reloc_offset); |
4393 | |
|
4394 | 0 | if (offset != (bfd_vma)-1) |
4395 | 0 | sh_elf_add_dyn_reloc (output_bfd, srelgot, |
4396 | 0 | offset |
4397 | 0 | + reloc_section->output_section->vma |
4398 | 0 | + reloc_section->output_offset, |
4399 | 0 | reloc_type, dynindx, relocation); |
4400 | |
|
4401 | 0 | if (r_type == R_SH_FUNCDESC) |
4402 | 0 | { |
4403 | 0 | r = bfd_reloc_ok; |
4404 | 0 | break; |
4405 | 0 | } |
4406 | 0 | else |
4407 | 0 | { |
4408 | 0 | relocation = 0; |
4409 | 0 | goto funcdesc_leave_zero; |
4410 | 0 | } |
4411 | 0 | } |
4412 | | |
4413 | 0 | if (SYMBOL_FUNCDESC_LOCAL (info, h)) |
4414 | 0 | relocation += htab->sfuncdesc->output_section->vma; |
4415 | 0 | funcdesc_leave_zero: |
4416 | 0 | if (r_type != R_SH_FUNCDESC) |
4417 | 0 | { |
4418 | 0 | bfd_put_32 (output_bfd, relocation, |
4419 | 0 | reloc_section->contents + reloc_offset); |
4420 | 0 | if (h != NULL) |
4421 | 0 | h->got.offset |= 1; |
4422 | 0 | else |
4423 | 0 | local_got_offsets[r_symndx] |= 1; |
4424 | |
|
4425 | 0 | funcdesc_done_got: |
4426 | |
|
4427 | 0 | relocation = sh_elf_got_offset (htab) + reloc_offset; |
4428 | | #ifdef GOT_BIAS |
4429 | | relocation -= GOT_BIAS; |
4430 | | #endif |
4431 | 0 | } |
4432 | 0 | if (r_type == R_SH_GOTFUNCDESC20) |
4433 | 0 | { |
4434 | 0 | r = install_movi20_field (output_bfd, relocation + addend, |
4435 | 0 | input_bfd, input_section, contents, |
4436 | 0 | rel->r_offset); |
4437 | 0 | break; |
4438 | 0 | } |
4439 | 0 | else |
4440 | 0 | goto final_link_relocate; |
4441 | 0 | } |
4442 | 0 | break; |
4443 | | |
4444 | 0 | case R_SH_GOTOFFFUNCDESC: |
4445 | 0 | case R_SH_GOTOFFFUNCDESC20: |
4446 | | /* FIXME: See R_SH_FUNCDESC comment about global symbols in the |
4447 | | executable and --export-dynamic. If such symbols get |
4448 | | ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC |
4449 | | for them. */ |
4450 | 0 | BFD_ASSERT (htab); |
4451 | |
|
4452 | 0 | check_segment[0] = check_segment[1] = -1; |
4453 | 0 | relocation = 0; |
4454 | 0 | addend = rel->r_addend; |
4455 | |
|
4456 | 0 | if (h && (h->root.type == bfd_link_hash_undefweak |
4457 | 0 | || !SYMBOL_FUNCDESC_LOCAL (info, h))) |
4458 | 0 | { |
4459 | 0 | _bfd_error_handler |
4460 | | /* xgettext:c-format */ |
4461 | 0 | (_("%pB(%pA+%#" PRIx64 "): " |
4462 | 0 | "%s relocation against external symbol \"%s\""), |
4463 | 0 | input_bfd, input_section, (uint64_t) rel->r_offset, |
4464 | 0 | howto->name, h->root.root.string); |
4465 | 0 | return false; |
4466 | 0 | } |
4467 | 0 | else |
4468 | 0 | { |
4469 | 0 | bfd_vma offset; |
4470 | | |
4471 | | /* Otherwise, we know we have a private function |
4472 | | descriptor, so reference it directly. */ |
4473 | 0 | if (h) |
4474 | 0 | { |
4475 | 0 | offset = sh_elf_hash_entry (h)->funcdesc.offset; |
4476 | 0 | BFD_ASSERT (offset != MINUS_ONE); |
4477 | 0 | if ((offset & 1) == 0) |
4478 | 0 | { |
4479 | 0 | if (!sh_elf_initialize_funcdesc (output_bfd, info, h, |
4480 | 0 | offset, NULL, 0)) |
4481 | 0 | return false; |
4482 | 0 | sh_elf_hash_entry (h)->funcdesc.offset |= 1; |
4483 | 0 | } |
4484 | 0 | } |
4485 | 0 | else |
4486 | 0 | { |
4487 | 0 | union gotref *local_funcdesc; |
4488 | |
|
4489 | 0 | local_funcdesc = sh_elf_local_funcdesc (input_bfd); |
4490 | 0 | offset = local_funcdesc[r_symndx].offset; |
4491 | 0 | BFD_ASSERT (offset != MINUS_ONE); |
4492 | 0 | if ((offset & 1) == 0) |
4493 | 0 | { |
4494 | 0 | if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL, |
4495 | 0 | offset, sec, |
4496 | 0 | sym->st_value)) |
4497 | 0 | return false; |
4498 | 0 | local_funcdesc[r_symndx].offset |= 1; |
4499 | 0 | } |
4500 | 0 | } |
4501 | | |
4502 | 0 | relocation = htab->sfuncdesc->output_offset + (offset & ~1); |
4503 | 0 | } |
4504 | | |
4505 | 0 | relocation -= (htab->root.hgot->root.u.def.value |
4506 | 0 | + sgotplt->output_offset); |
4507 | | #ifdef GOT_BIAS |
4508 | | relocation -= GOT_BIAS; |
4509 | | #endif |
4510 | |
|
4511 | 0 | if (r_type == R_SH_GOTOFFFUNCDESC20) |
4512 | 0 | { |
4513 | 0 | r = install_movi20_field (output_bfd, relocation + addend, |
4514 | 0 | input_bfd, input_section, contents, |
4515 | 0 | rel->r_offset); |
4516 | 0 | break; |
4517 | 0 | } |
4518 | 0 | else |
4519 | 0 | goto final_link_relocate; |
4520 | | |
4521 | 0 | case R_SH_LOOP_START: |
4522 | 0 | { |
4523 | 0 | static bfd_vma start, end; |
4524 | |
|
4525 | 0 | start = (relocation + rel->r_addend |
4526 | 0 | - (sec->output_section->vma + sec->output_offset)); |
4527 | 0 | r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, |
4528 | 0 | rel->r_offset, sec, start, end); |
4529 | 0 | break; |
4530 | | |
4531 | 0 | case R_SH_LOOP_END: |
4532 | 0 | end = (relocation + rel->r_addend |
4533 | 0 | - (sec->output_section->vma + sec->output_offset)); |
4534 | 0 | r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, |
4535 | 0 | rel->r_offset, sec, start, end); |
4536 | 0 | break; |
4537 | 0 | } |
4538 | | |
4539 | 0 | case R_SH_TLS_GD_32: |
4540 | 0 | case R_SH_TLS_IE_32: |
4541 | 0 | BFD_ASSERT (htab); |
4542 | 0 | check_segment[0] = check_segment[1] = -1; |
4543 | 0 | r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL); |
4544 | 0 | got_type = GOT_UNKNOWN; |
4545 | 0 | if (h == NULL && local_got_offsets) |
4546 | 0 | got_type = sh_elf_local_got_type (input_bfd) [r_symndx]; |
4547 | 0 | else if (h != NULL) |
4548 | 0 | { |
4549 | 0 | got_type = sh_elf_hash_entry (h)->got_type; |
4550 | 0 | if (! bfd_link_pic (info) |
4551 | 0 | && (h->dynindx == -1 |
4552 | 0 | || h->def_regular)) |
4553 | 0 | r_type = R_SH_TLS_LE_32; |
4554 | 0 | } |
4555 | |
|
4556 | 0 | if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE) |
4557 | 0 | r_type = R_SH_TLS_IE_32; |
4558 | |
|
4559 | 0 | if (r_type == R_SH_TLS_LE_32) |
4560 | 0 | { |
4561 | 0 | bfd_vma offset; |
4562 | 0 | unsigned short insn; |
4563 | |
|
4564 | 0 | if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32) |
4565 | 0 | { |
4566 | | /* GD->LE transition: |
4567 | | mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1; |
4568 | | jsr @r1; add r12,r4; bra 3f; nop; .align 2; |
4569 | | 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3: |
4570 | | We change it into: |
4571 | | mov.l 1f,r4; stc gbr,r0; add r4,r0; nop; |
4572 | | nop; nop; ... |
4573 | | 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */ |
4574 | |
|
4575 | 0 | offset = rel->r_offset; |
4576 | 0 | if (offset < 16) |
4577 | 0 | { |
4578 | 0 | _bfd_error_handler |
4579 | | /* xgettext:c-format */ |
4580 | 0 | (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64), |
4581 | 0 | input_bfd, input_section, (uint64_t) offset); |
4582 | 0 | return false; |
4583 | 0 | } |
4584 | | |
4585 | | /* Size of GD instructions is 16 or 18. */ |
4586 | 0 | offset -= 16; |
4587 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4588 | 0 | if ((insn & 0xff00) == 0xc700) |
4589 | 0 | { |
4590 | 0 | BFD_ASSERT (offset >= 2); |
4591 | 0 | offset -= 2; |
4592 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4593 | 0 | } |
4594 | |
|
4595 | 0 | if ((insn & 0xff00) != 0xd400) |
4596 | 0 | _bfd_error_handler |
4597 | | /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */ |
4598 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"), |
4599 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4600 | |
|
4601 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 2); |
4602 | |
|
4603 | 0 | if ((insn & 0xff00) != 0xc700) |
4604 | 0 | _bfd_error_handler |
4605 | | /* xgettext:c-format */ |
4606 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"), |
4607 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4608 | |
|
4609 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 4); |
4610 | 0 | if ((insn & 0xff00) != 0xd100) |
4611 | 0 | _bfd_error_handler |
4612 | | /* xgettext:c-format */ |
4613 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"), |
4614 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4615 | |
|
4616 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 6); |
4617 | 0 | if (insn != 0x310c) |
4618 | 0 | _bfd_error_handler |
4619 | | /* xgettext:c-format */ |
4620 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"), |
4621 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4622 | |
|
4623 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 8); |
4624 | 0 | if (insn != 0x410b) |
4625 | 0 | _bfd_error_handler |
4626 | | /* xgettext:c-format */ |
4627 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"), |
4628 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4629 | |
|
4630 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 10); |
4631 | 0 | if (insn != 0x34cc) |
4632 | 0 | _bfd_error_handler |
4633 | | /* xgettext:c-format */ |
4634 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"), |
4635 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4636 | |
|
4637 | 0 | bfd_put_16 (output_bfd, 0x0012, contents + offset + 2); |
4638 | 0 | bfd_put_16 (output_bfd, 0x304c, contents + offset + 4); |
4639 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 6); |
4640 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 8); |
4641 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 10); |
4642 | 0 | } |
4643 | 0 | else |
4644 | 0 | { |
4645 | 0 | int target; |
4646 | | |
4647 | | /* IE->LE transition: |
4648 | | mov.l 1f,r0; |
4649 | | stc gbr,rN; |
4650 | | mov.l @(r0,r12),rM; |
4651 | | bra 2f; |
4652 | | add ...; |
4653 | | .align 2; |
4654 | | 1: x@GOTTPOFF; |
4655 | | 2: |
4656 | | We change it into: |
4657 | | mov.l .Ln,rM; |
4658 | | stc gbr,rN; |
4659 | | nop; |
4660 | | ...; |
4661 | | 1: x@TPOFF; |
4662 | | 2:. */ |
4663 | |
|
4664 | 0 | offset = rel->r_offset; |
4665 | 0 | if (offset < 16) |
4666 | 0 | { |
4667 | 0 | _bfd_error_handler |
4668 | | /* xgettext:c-format */ |
4669 | 0 | (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64), |
4670 | 0 | input_bfd, input_section, (uint64_t) offset); |
4671 | 0 | return false; |
4672 | 0 | } |
4673 | | |
4674 | | /* Size of IE instructions is 10 or 12. */ |
4675 | 0 | offset -= 10; |
4676 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4677 | 0 | if ((insn & 0xf0ff) == 0x0012) |
4678 | 0 | { |
4679 | 0 | BFD_ASSERT (offset >= 2); |
4680 | 0 | offset -= 2; |
4681 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4682 | 0 | } |
4683 | |
|
4684 | 0 | if ((insn & 0xff00) != 0xd000) |
4685 | 0 | _bfd_error_handler |
4686 | | /* xgettext:c-format */ |
4687 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"), |
4688 | 0 | input_bfd, input_section, (uint64_t) offset, (int) insn); |
4689 | |
|
4690 | 0 | target = insn & 0x00ff; |
4691 | |
|
4692 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 2); |
4693 | 0 | if ((insn & 0xf0ff) != 0x0012) |
4694 | 0 | _bfd_error_handler |
4695 | | /* xgettext:c-format */ |
4696 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"), |
4697 | 0 | input_bfd, input_section, (uint64_t) (offset + 2), (int) insn); |
4698 | |
|
4699 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 4); |
4700 | 0 | if ((insn & 0xf0ff) != 0x00ce) |
4701 | 0 | _bfd_error_handler |
4702 | | /* xgettext:c-format */ |
4703 | 0 | (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"), |
4704 | 0 | input_bfd, input_section, (uint64_t) (offset + 4), (int) insn); |
4705 | |
|
4706 | 0 | insn = 0xd000 | (insn & 0x0f00) | target; |
4707 | 0 | bfd_put_16 (output_bfd, insn, contents + offset + 0); |
4708 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 4); |
4709 | 0 | } |
4710 | | |
4711 | 0 | bfd_put_32 (output_bfd, tpoff (info, relocation), |
4712 | 0 | contents + rel->r_offset); |
4713 | 0 | continue; |
4714 | 0 | } |
4715 | | |
4716 | 0 | if (sgot == NULL || sgotplt == NULL) |
4717 | 0 | abort (); |
4718 | | |
4719 | 0 | if (h != NULL) |
4720 | 0 | off = h->got.offset; |
4721 | 0 | else |
4722 | 0 | { |
4723 | 0 | if (local_got_offsets == NULL) |
4724 | 0 | abort (); |
4725 | | |
4726 | 0 | off = local_got_offsets[r_symndx]; |
4727 | 0 | } |
4728 | | |
4729 | | /* Relocate R_SH_TLS_IE_32 directly when statically linking. */ |
4730 | 0 | if (r_type == R_SH_TLS_IE_32 |
4731 | 0 | && ! htab->root.dynamic_sections_created) |
4732 | 0 | { |
4733 | 0 | off &= ~1; |
4734 | 0 | bfd_put_32 (output_bfd, tpoff (info, relocation), |
4735 | 0 | sgot->contents + off); |
4736 | 0 | bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off, |
4737 | 0 | contents + rel->r_offset); |
4738 | 0 | continue; |
4739 | 0 | } |
4740 | | |
4741 | 0 | if ((off & 1) != 0) |
4742 | 0 | off &= ~1; |
4743 | 0 | else |
4744 | 0 | { |
4745 | 0 | Elf_Internal_Rela outrel; |
4746 | 0 | bfd_byte *loc; |
4747 | 0 | int dr_type, indx; |
4748 | |
|
4749 | 0 | outrel.r_offset = (sgot->output_section->vma |
4750 | 0 | + sgot->output_offset + off); |
4751 | |
|
4752 | 0 | if (h == NULL || h->dynindx == -1) |
4753 | 0 | indx = 0; |
4754 | 0 | else |
4755 | 0 | indx = h->dynindx; |
4756 | |
|
4757 | 0 | dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 : |
4758 | 0 | R_SH_TLS_TPOFF32); |
4759 | 0 | if (dr_type == R_SH_TLS_TPOFF32 && indx == 0) |
4760 | 0 | outrel.r_addend = relocation - dtpoff_base (info); |
4761 | 0 | else |
4762 | 0 | outrel.r_addend = 0; |
4763 | 0 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
4764 | 0 | loc = srelgot->contents; |
4765 | 0 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); |
4766 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
4767 | |
|
4768 | 0 | if (r_type == R_SH_TLS_GD_32) |
4769 | 0 | { |
4770 | 0 | if (indx == 0) |
4771 | 0 | { |
4772 | 0 | bfd_put_32 (output_bfd, |
4773 | 0 | relocation - dtpoff_base (info), |
4774 | 0 | sgot->contents + off + 4); |
4775 | 0 | } |
4776 | 0 | else |
4777 | 0 | { |
4778 | 0 | outrel.r_info = ELF32_R_INFO (indx, |
4779 | 0 | R_SH_TLS_DTPOFF32); |
4780 | 0 | outrel.r_offset += 4; |
4781 | 0 | outrel.r_addend = 0; |
4782 | 0 | srelgot->reloc_count++; |
4783 | 0 | loc += sizeof (Elf32_External_Rela); |
4784 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
4785 | 0 | } |
4786 | 0 | } |
4787 | |
|
4788 | 0 | if (h != NULL) |
4789 | 0 | h->got.offset |= 1; |
4790 | 0 | else |
4791 | 0 | local_got_offsets[r_symndx] |= 1; |
4792 | 0 | } |
4793 | |
|
4794 | 0 | if (off >= (bfd_vma) -2) |
4795 | 0 | abort (); |
4796 | | |
4797 | 0 | if (r_type == (int) ELF32_R_TYPE (rel->r_info)) |
4798 | 0 | relocation = sh_elf_got_offset (htab) + off; |
4799 | 0 | else |
4800 | 0 | { |
4801 | 0 | bfd_vma offset; |
4802 | 0 | unsigned short insn; |
4803 | | |
4804 | | /* GD->IE transition: |
4805 | | mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1; |
4806 | | jsr @r1; add r12,r4; bra 3f; nop; .align 2; |
4807 | | 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3: |
4808 | | We change it into: |
4809 | | mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0; |
4810 | | nop; nop; bra 3f; nop; .align 2; |
4811 | | 1: .long x@TPOFF; 2:...; 3:. */ |
4812 | |
|
4813 | 0 | offset = rel->r_offset; |
4814 | 0 | if (offset < 16) |
4815 | 0 | { |
4816 | 0 | _bfd_error_handler |
4817 | | /* xgettext:c-format */ |
4818 | 0 | (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64), |
4819 | 0 | input_bfd, input_section, (uint64_t) offset); |
4820 | 0 | return false; |
4821 | 0 | } |
4822 | | |
4823 | | /* Size of GD instructions is 16 or 18. */ |
4824 | 0 | offset -= 16; |
4825 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4826 | 0 | if ((insn & 0xff00) == 0xc700) |
4827 | 0 | { |
4828 | 0 | BFD_ASSERT (offset >= 2); |
4829 | 0 | offset -= 2; |
4830 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4831 | 0 | } |
4832 | |
|
4833 | 0 | BFD_ASSERT ((insn & 0xff00) == 0xd400); |
4834 | | |
4835 | | /* Replace mov.l 1f,R4 with mov.l 1f,r0. */ |
4836 | 0 | bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset); |
4837 | |
|
4838 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 2); |
4839 | 0 | BFD_ASSERT ((insn & 0xff00) == 0xc700); |
4840 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 4); |
4841 | 0 | BFD_ASSERT ((insn & 0xff00) == 0xd100); |
4842 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 6); |
4843 | 0 | BFD_ASSERT (insn == 0x310c); |
4844 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 8); |
4845 | 0 | BFD_ASSERT (insn == 0x410b); |
4846 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 10); |
4847 | 0 | BFD_ASSERT (insn == 0x34cc); |
4848 | |
|
4849 | 0 | bfd_put_16 (output_bfd, 0x0412, contents + offset + 2); |
4850 | 0 | bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4); |
4851 | 0 | bfd_put_16 (output_bfd, 0x304c, contents + offset + 6); |
4852 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 8); |
4853 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 10); |
4854 | |
|
4855 | 0 | bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off, |
4856 | 0 | contents + rel->r_offset); |
4857 | |
|
4858 | 0 | continue; |
4859 | 0 | } |
4860 | | |
4861 | 0 | addend = rel->r_addend; |
4862 | |
|
4863 | 0 | goto final_link_relocate; |
4864 | | |
4865 | 0 | case R_SH_TLS_LD_32: |
4866 | 0 | BFD_ASSERT (htab); |
4867 | 0 | check_segment[0] = check_segment[1] = -1; |
4868 | 0 | if (! bfd_link_pic (info)) |
4869 | 0 | { |
4870 | 0 | bfd_vma offset; |
4871 | 0 | unsigned short insn; |
4872 | | |
4873 | | /* LD->LE transition: |
4874 | | mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1; |
4875 | | jsr @r1; add r12,r4; bra 3f; nop; .align 2; |
4876 | | 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3: |
4877 | | We change it into: |
4878 | | stc gbr,r0; nop; nop; nop; |
4879 | | nop; nop; bra 3f; ...; 3:. */ |
4880 | |
|
4881 | 0 | offset = rel->r_offset; |
4882 | 0 | if (offset < 16) |
4883 | 0 | { |
4884 | 0 | _bfd_error_handler |
4885 | | /* xgettext:c-format */ |
4886 | 0 | (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64), |
4887 | 0 | input_bfd, input_section, (uint64_t) offset); |
4888 | 0 | return false; |
4889 | 0 | } |
4890 | | |
4891 | | /* Size of LD instructions is 16 or 18. */ |
4892 | 0 | offset -= 16; |
4893 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4894 | 0 | if ((insn & 0xff00) == 0xc700) |
4895 | 0 | { |
4896 | 0 | BFD_ASSERT (offset >= 2); |
4897 | 0 | offset -= 2; |
4898 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 0); |
4899 | 0 | } |
4900 | |
|
4901 | 0 | BFD_ASSERT ((insn & 0xff00) == 0xd400); |
4902 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 2); |
4903 | 0 | BFD_ASSERT ((insn & 0xff00) == 0xc700); |
4904 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 4); |
4905 | 0 | BFD_ASSERT ((insn & 0xff00) == 0xd100); |
4906 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 6); |
4907 | 0 | BFD_ASSERT (insn == 0x310c); |
4908 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 8); |
4909 | 0 | BFD_ASSERT (insn == 0x410b); |
4910 | 0 | insn = bfd_get_16 (input_bfd, contents + offset + 10); |
4911 | 0 | BFD_ASSERT (insn == 0x34cc); |
4912 | |
|
4913 | 0 | bfd_put_16 (output_bfd, 0x0012, contents + offset + 0); |
4914 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 2); |
4915 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 4); |
4916 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 6); |
4917 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 8); |
4918 | 0 | bfd_put_16 (output_bfd, 0x0009, contents + offset + 10); |
4919 | |
|
4920 | 0 | continue; |
4921 | 0 | } |
4922 | | |
4923 | 0 | if (sgot == NULL || sgotplt == NULL) |
4924 | 0 | abort (); |
4925 | | |
4926 | 0 | off = htab->tls_ldm_got.offset; |
4927 | 0 | if (off & 1) |
4928 | 0 | off &= ~1; |
4929 | 0 | else |
4930 | 0 | { |
4931 | 0 | Elf_Internal_Rela outrel; |
4932 | 0 | bfd_byte *loc; |
4933 | |
|
4934 | 0 | outrel.r_offset = (sgot->output_section->vma |
4935 | 0 | + sgot->output_offset + off); |
4936 | 0 | outrel.r_addend = 0; |
4937 | 0 | outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32); |
4938 | 0 | loc = srelgot->contents; |
4939 | 0 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); |
4940 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
4941 | 0 | htab->tls_ldm_got.offset |= 1; |
4942 | 0 | } |
4943 | |
|
4944 | 0 | relocation = sh_elf_got_offset (htab) + off; |
4945 | 0 | addend = rel->r_addend; |
4946 | |
|
4947 | 0 | goto final_link_relocate; |
4948 | | |
4949 | 0 | case R_SH_TLS_LDO_32: |
4950 | 0 | check_segment[0] = check_segment[1] = -1; |
4951 | 0 | if (! bfd_link_pic (info)) |
4952 | 0 | relocation = tpoff (info, relocation); |
4953 | 0 | else |
4954 | 0 | relocation -= dtpoff_base (info); |
4955 | |
|
4956 | 0 | addend = rel->r_addend; |
4957 | 0 | goto final_link_relocate; |
4958 | | |
4959 | 0 | case R_SH_TLS_LE_32: |
4960 | 0 | { |
4961 | 0 | int indx; |
4962 | 0 | Elf_Internal_Rela outrel; |
4963 | 0 | bfd_byte *loc; |
4964 | |
|
4965 | 0 | check_segment[0] = check_segment[1] = -1; |
4966 | |
|
4967 | 0 | if (!bfd_link_dll (info)) |
4968 | 0 | { |
4969 | 0 | relocation = tpoff (info, relocation); |
4970 | 0 | addend = rel->r_addend; |
4971 | 0 | goto final_link_relocate; |
4972 | 0 | } |
4973 | | |
4974 | 0 | if (sreloc == NULL) |
4975 | 0 | { |
4976 | 0 | sreloc = _bfd_elf_get_dynamic_reloc_section |
4977 | 0 | (input_bfd, input_section, /*rela?*/ true); |
4978 | 0 | if (sreloc == NULL) |
4979 | 0 | return false; |
4980 | 0 | } |
4981 | | |
4982 | 0 | if (h == NULL || h->dynindx == -1) |
4983 | 0 | indx = 0; |
4984 | 0 | else |
4985 | 0 | indx = h->dynindx; |
4986 | |
|
4987 | 0 | outrel.r_offset = (input_section->output_section->vma |
4988 | 0 | + input_section->output_offset |
4989 | 0 | + rel->r_offset); |
4990 | 0 | outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32); |
4991 | 0 | if (indx == 0) |
4992 | 0 | outrel.r_addend = relocation - dtpoff_base (info); |
4993 | 0 | else |
4994 | 0 | outrel.r_addend = 0; |
4995 | |
|
4996 | 0 | loc = sreloc->contents; |
4997 | 0 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
4998 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
4999 | 0 | continue; |
5000 | 0 | } |
5001 | 0 | } |
5002 | | |
5003 | 0 | relocation_done: |
5004 | 0 | if (fdpic_p && check_segment[0] != (unsigned) -1 |
5005 | 0 | && check_segment[0] != check_segment[1]) |
5006 | 0 | { |
5007 | | /* We don't want duplicate errors for undefined symbols. */ |
5008 | 0 | if (!h || h->root.type != bfd_link_hash_undefined) |
5009 | 0 | { |
5010 | 0 | if (bfd_link_pic (info)) |
5011 | 0 | { |
5012 | 0 | info->callbacks->einfo |
5013 | | /* xgettext:c-format */ |
5014 | 0 | (_("%X%H: relocation to \"%s\" references a different segment\n"), |
5015 | 0 | input_bfd, input_section, rel->r_offset, symname); |
5016 | 0 | return false; |
5017 | 0 | } |
5018 | 0 | else |
5019 | 0 | info->callbacks->einfo |
5020 | | /* xgettext:c-format */ |
5021 | 0 | (_("%H: warning: relocation to \"%s\" references a different segment\n"), |
5022 | 0 | input_bfd, input_section, rel->r_offset, symname); |
5023 | 0 | } |
5024 | | |
5025 | 0 | elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC; |
5026 | 0 | } |
5027 | | |
5028 | 0 | if (r != bfd_reloc_ok) |
5029 | 0 | { |
5030 | 0 | switch (r) |
5031 | 0 | { |
5032 | 0 | default: |
5033 | 0 | case bfd_reloc_outofrange: |
5034 | 0 | abort (); |
5035 | 0 | case bfd_reloc_overflow: |
5036 | 0 | { |
5037 | 0 | const char *name; |
5038 | |
|
5039 | 0 | if (h != NULL) |
5040 | 0 | name = NULL; |
5041 | 0 | else |
5042 | 0 | { |
5043 | 0 | name = (bfd_elf_string_from_elf_section |
5044 | 0 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
5045 | 0 | if (name == NULL) |
5046 | 0 | return false; |
5047 | 0 | if (*name == '\0') |
5048 | 0 | name = bfd_section_name (sec); |
5049 | 0 | } |
5050 | 0 | (*info->callbacks->reloc_overflow) |
5051 | 0 | (info, (h ? &h->root : NULL), name, howto->name, |
5052 | 0 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
5053 | 0 | } |
5054 | 0 | break; |
5055 | 0 | } |
5056 | 0 | } |
5057 | 0 | } |
5058 | | |
5059 | 0 | return true; |
5060 | 0 | } |
5061 | | |
5062 | | /* This is a version of bfd_generic_get_relocated_section_contents |
5063 | | which uses sh_elf_relocate_section. */ |
5064 | | |
5065 | | static bfd_byte * |
5066 | | sh_elf_get_relocated_section_contents (bfd *output_bfd, |
5067 | | struct bfd_link_info *link_info, |
5068 | | struct bfd_link_order *link_order, |
5069 | | bfd_byte *data, |
5070 | | bool relocatable, |
5071 | | asymbol **symbols) |
5072 | 13 | { |
5073 | 13 | Elf_Internal_Shdr *symtab_hdr; |
5074 | 13 | asection *input_section = link_order->u.indirect.section; |
5075 | 13 | bfd *input_bfd = input_section->owner; |
5076 | 13 | asection **sections = NULL; |
5077 | 13 | Elf_Internal_Rela *internal_relocs = NULL; |
5078 | 13 | Elf_Internal_Sym *isymbuf = NULL; |
5079 | | |
5080 | | /* We only need to handle the case of relaxing, or of having a |
5081 | | particular set of section contents, specially. */ |
5082 | 13 | if (relocatable |
5083 | 13 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
5084 | 13 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, |
5085 | 13 | link_order, data, |
5086 | 13 | relocatable, |
5087 | 13 | symbols); |
5088 | | |
5089 | 0 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5090 | |
|
5091 | 0 | bfd_byte *orig_data = data; |
5092 | 0 | if (data == NULL) |
5093 | 0 | { |
5094 | 0 | data = bfd_malloc (input_section->size); |
5095 | 0 | if (data == NULL) |
5096 | 0 | return NULL; |
5097 | 0 | } |
5098 | 0 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, |
5099 | 0 | (size_t) input_section->size); |
5100 | |
|
5101 | 0 | if ((input_section->flags & SEC_RELOC) != 0 |
5102 | 0 | && input_section->reloc_count > 0) |
5103 | 0 | { |
5104 | 0 | asection **secpp; |
5105 | 0 | Elf_Internal_Sym *isym, *isymend; |
5106 | 0 | bfd_size_type amt; |
5107 | |
|
5108 | 0 | internal_relocs = (_bfd_elf_link_read_relocs |
5109 | 0 | (input_bfd, input_section, NULL, |
5110 | 0 | (Elf_Internal_Rela *) NULL, false)); |
5111 | 0 | if (internal_relocs == NULL) |
5112 | 0 | goto error_return; |
5113 | | |
5114 | 0 | if (symtab_hdr->sh_info != 0) |
5115 | 0 | { |
5116 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
5117 | 0 | if (isymbuf == NULL) |
5118 | 0 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, |
5119 | 0 | symtab_hdr->sh_info, 0, |
5120 | 0 | NULL, NULL, NULL); |
5121 | 0 | if (isymbuf == NULL) |
5122 | 0 | goto error_return; |
5123 | 0 | } |
5124 | | |
5125 | 0 | amt = symtab_hdr->sh_info; |
5126 | 0 | amt *= sizeof (asection *); |
5127 | 0 | sections = (asection **) bfd_malloc (amt); |
5128 | 0 | if (sections == NULL && amt != 0) |
5129 | 0 | goto error_return; |
5130 | | |
5131 | 0 | isymend = isymbuf + symtab_hdr->sh_info; |
5132 | 0 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) |
5133 | 0 | { |
5134 | 0 | asection *isec; |
5135 | |
|
5136 | 0 | if (isym->st_shndx == SHN_UNDEF) |
5137 | 0 | isec = bfd_und_section_ptr; |
5138 | 0 | else if (isym->st_shndx == SHN_ABS) |
5139 | 0 | isec = bfd_abs_section_ptr; |
5140 | 0 | else if (isym->st_shndx == SHN_COMMON) |
5141 | 0 | isec = bfd_com_section_ptr; |
5142 | 0 | else |
5143 | 0 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
5144 | |
|
5145 | 0 | *secpp = isec; |
5146 | 0 | } |
5147 | |
|
5148 | 0 | if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd, |
5149 | 0 | input_section, data, internal_relocs, |
5150 | 0 | isymbuf, sections)) |
5151 | 0 | goto error_return; |
5152 | | |
5153 | 0 | free (sections); |
5154 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
5155 | 0 | free (isymbuf); |
5156 | 0 | if (elf_section_data (input_section)->relocs != internal_relocs) |
5157 | 0 | free (internal_relocs); |
5158 | 0 | } |
5159 | | |
5160 | 0 | return data; |
5161 | | |
5162 | 0 | error_return: |
5163 | 0 | free (sections); |
5164 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
5165 | 0 | free (isymbuf); |
5166 | 0 | if (elf_section_data (input_section)->relocs != internal_relocs) |
5167 | 0 | free (internal_relocs); |
5168 | 0 | if (orig_data == NULL) |
5169 | 0 | free (data); |
5170 | 0 | return NULL; |
5171 | 0 | } |
5172 | | |
5173 | | /* Return the base VMA address which should be subtracted from real addresses |
5174 | | when resolving @dtpoff relocation. |
5175 | | This is PT_TLS segment p_vaddr. */ |
5176 | | |
5177 | | static bfd_vma |
5178 | | dtpoff_base (struct bfd_link_info *info) |
5179 | 0 | { |
5180 | | /* If tls_sec is NULL, we should have signalled an error already. */ |
5181 | 0 | if (elf_hash_table (info)->tls_sec == NULL) |
5182 | 0 | return 0; |
5183 | 0 | return elf_hash_table (info)->tls_sec->vma; |
5184 | 0 | } |
5185 | | |
5186 | | /* Return the relocation value for R_SH_TLS_TPOFF32.. */ |
5187 | | |
5188 | | static bfd_vma |
5189 | | tpoff (struct bfd_link_info *info, bfd_vma address) |
5190 | 0 | { |
5191 | | /* If tls_sec is NULL, we should have signalled an error already. */ |
5192 | 0 | if (elf_hash_table (info)->tls_sec == NULL) |
5193 | 0 | return 0; |
5194 | | /* SH TLS ABI is variant I and static TLS block start just after tcbhead |
5195 | | structure which has 2 pointer fields. */ |
5196 | 0 | return (address - elf_hash_table (info)->tls_sec->vma |
5197 | 0 | + align_power ((bfd_vma) 8, |
5198 | 0 | elf_hash_table (info)->tls_sec->alignment_power)); |
5199 | 0 | } |
5200 | | |
5201 | | static asection * |
5202 | | sh_elf_gc_mark_hook (asection *sec, |
5203 | | struct bfd_link_info *info, |
5204 | | Elf_Internal_Rela *rel, |
5205 | | struct elf_link_hash_entry *h, |
5206 | | Elf_Internal_Sym *sym) |
5207 | 0 | { |
5208 | 0 | if (h != NULL) |
5209 | 0 | switch (ELF32_R_TYPE (rel->r_info)) |
5210 | 0 | { |
5211 | 0 | case R_SH_GNU_VTINHERIT: |
5212 | 0 | case R_SH_GNU_VTENTRY: |
5213 | 0 | return NULL; |
5214 | 0 | } |
5215 | | |
5216 | 0 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5217 | 0 | } |
5218 | | |
5219 | | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
5220 | | |
5221 | | static void |
5222 | | sh_elf_copy_indirect_symbol (struct bfd_link_info *info, |
5223 | | struct elf_link_hash_entry *dir, |
5224 | | struct elf_link_hash_entry *ind) |
5225 | 0 | { |
5226 | 0 | struct elf_sh_link_hash_entry *edir, *eind; |
5227 | |
|
5228 | 0 | edir = (struct elf_sh_link_hash_entry *) dir; |
5229 | 0 | eind = (struct elf_sh_link_hash_entry *) ind; |
5230 | |
|
5231 | 0 | edir->gotplt_refcount = eind->gotplt_refcount; |
5232 | 0 | eind->gotplt_refcount = 0; |
5233 | 0 | edir->funcdesc.refcount += eind->funcdesc.refcount; |
5234 | 0 | eind->funcdesc.refcount = 0; |
5235 | 0 | edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount; |
5236 | 0 | eind->abs_funcdesc_refcount = 0; |
5237 | |
|
5238 | 0 | if (ind->root.type == bfd_link_hash_indirect |
5239 | 0 | && dir->got.refcount <= 0) |
5240 | 0 | { |
5241 | 0 | edir->got_type = eind->got_type; |
5242 | 0 | eind->got_type = GOT_UNKNOWN; |
5243 | 0 | } |
5244 | |
|
5245 | 0 | if (ind->root.type != bfd_link_hash_indirect |
5246 | 0 | && dir->dynamic_adjusted) |
5247 | 0 | { |
5248 | | /* If called to transfer flags for a weakdef during processing |
5249 | | of elf_adjust_dynamic_symbol, don't copy non_got_ref. |
5250 | | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
5251 | 0 | if (dir->versioned != versioned_hidden) |
5252 | 0 | dir->ref_dynamic |= ind->ref_dynamic; |
5253 | 0 | dir->ref_regular |= ind->ref_regular; |
5254 | 0 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; |
5255 | 0 | dir->needs_plt |= ind->needs_plt; |
5256 | 0 | } |
5257 | 0 | else |
5258 | 0 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
5259 | 0 | } |
5260 | | |
5261 | | static int |
5262 | | sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type, |
5263 | | int is_local) |
5264 | 0 | { |
5265 | 0 | if (bfd_link_pic (info)) |
5266 | 0 | return r_type; |
5267 | | |
5268 | 0 | switch (r_type) |
5269 | 0 | { |
5270 | 0 | case R_SH_TLS_GD_32: |
5271 | 0 | case R_SH_TLS_IE_32: |
5272 | 0 | if (is_local) |
5273 | 0 | return R_SH_TLS_LE_32; |
5274 | 0 | return R_SH_TLS_IE_32; |
5275 | 0 | case R_SH_TLS_LD_32: |
5276 | 0 | return R_SH_TLS_LE_32; |
5277 | 0 | } |
5278 | | |
5279 | 0 | return r_type; |
5280 | 0 | } |
5281 | | |
5282 | | /* Look through the relocs for a section during the first phase. |
5283 | | Since we don't do .gots or .plts, we just need to consider the |
5284 | | virtual table relocs for gc. */ |
5285 | | |
5286 | | static bool |
5287 | | sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
5288 | | const Elf_Internal_Rela *relocs) |
5289 | 0 | { |
5290 | 0 | Elf_Internal_Shdr *symtab_hdr; |
5291 | 0 | struct elf_link_hash_entry **sym_hashes; |
5292 | 0 | struct elf_sh_link_hash_table *htab; |
5293 | 0 | const Elf_Internal_Rela *rel; |
5294 | 0 | const Elf_Internal_Rela *rel_end; |
5295 | 0 | asection *sreloc; |
5296 | 0 | unsigned int r_type; |
5297 | 0 | enum got_type got_type, old_got_type; |
5298 | |
|
5299 | 0 | sreloc = NULL; |
5300 | |
|
5301 | 0 | if (bfd_link_relocatable (info)) |
5302 | 0 | return true; |
5303 | | |
5304 | 0 | BFD_ASSERT (is_sh_elf (abfd)); |
5305 | |
|
5306 | 0 | symtab_hdr = &elf_symtab_hdr (abfd); |
5307 | 0 | sym_hashes = elf_sym_hashes (abfd); |
5308 | |
|
5309 | 0 | htab = sh_elf_hash_table (info); |
5310 | 0 | if (htab == NULL) |
5311 | 0 | return false; |
5312 | | |
5313 | 0 | rel_end = relocs + sec->reloc_count; |
5314 | 0 | for (rel = relocs; rel < rel_end; rel++) |
5315 | 0 | { |
5316 | 0 | struct elf_link_hash_entry *h; |
5317 | 0 | unsigned long r_symndx; |
5318 | |
|
5319 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
5320 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
5321 | |
|
5322 | 0 | if (r_symndx < symtab_hdr->sh_info) |
5323 | 0 | h = NULL; |
5324 | 0 | else |
5325 | 0 | { |
5326 | 0 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
5327 | 0 | while (h->root.type == bfd_link_hash_indirect |
5328 | 0 | || h->root.type == bfd_link_hash_warning) |
5329 | 0 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
5330 | 0 | } |
5331 | |
|
5332 | 0 | r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL); |
5333 | 0 | if (! bfd_link_pic (info) |
5334 | 0 | && r_type == R_SH_TLS_IE_32 |
5335 | 0 | && h != NULL |
5336 | 0 | && h->root.type != bfd_link_hash_undefined |
5337 | 0 | && h->root.type != bfd_link_hash_undefweak |
5338 | 0 | && (h->dynindx == -1 |
5339 | 0 | || h->def_regular)) |
5340 | 0 | r_type = R_SH_TLS_LE_32; |
5341 | |
|
5342 | 0 | if (htab->fdpic_p) |
5343 | 0 | switch (r_type) |
5344 | 0 | { |
5345 | 0 | case R_SH_GOTOFFFUNCDESC: |
5346 | 0 | case R_SH_GOTOFFFUNCDESC20: |
5347 | 0 | case R_SH_FUNCDESC: |
5348 | 0 | case R_SH_GOTFUNCDESC: |
5349 | 0 | case R_SH_GOTFUNCDESC20: |
5350 | 0 | if (h != NULL) |
5351 | 0 | { |
5352 | 0 | if (h->dynindx == -1) |
5353 | 0 | switch (ELF_ST_VISIBILITY (h->other)) |
5354 | 0 | { |
5355 | 0 | case STV_INTERNAL: |
5356 | 0 | case STV_HIDDEN: |
5357 | 0 | break; |
5358 | 0 | default: |
5359 | 0 | bfd_elf_link_record_dynamic_symbol (info, h); |
5360 | 0 | break; |
5361 | 0 | } |
5362 | 0 | } |
5363 | 0 | break; |
5364 | 0 | } |
5365 | | |
5366 | | /* Some relocs require a global offset table. */ |
5367 | 0 | if (htab->root.sgot == NULL) |
5368 | 0 | { |
5369 | 0 | switch (r_type) |
5370 | 0 | { |
5371 | 0 | case R_SH_DIR32: |
5372 | | /* This may require an rofixup. */ |
5373 | 0 | if (!htab->fdpic_p) |
5374 | 0 | break; |
5375 | | /* Fall through. */ |
5376 | 0 | case R_SH_GOTPLT32: |
5377 | 0 | case R_SH_GOT32: |
5378 | 0 | case R_SH_GOT20: |
5379 | 0 | case R_SH_GOTOFF: |
5380 | 0 | case R_SH_GOTOFF20: |
5381 | 0 | case R_SH_FUNCDESC: |
5382 | 0 | case R_SH_GOTFUNCDESC: |
5383 | 0 | case R_SH_GOTFUNCDESC20: |
5384 | 0 | case R_SH_GOTOFFFUNCDESC: |
5385 | 0 | case R_SH_GOTOFFFUNCDESC20: |
5386 | 0 | case R_SH_GOTPC: |
5387 | 0 | case R_SH_TLS_GD_32: |
5388 | 0 | case R_SH_TLS_LD_32: |
5389 | 0 | case R_SH_TLS_IE_32: |
5390 | 0 | if (htab->root.dynobj == NULL) |
5391 | 0 | htab->root.dynobj = abfd; |
5392 | 0 | if (!create_got_section (htab->root.dynobj, info)) |
5393 | 0 | return false; |
5394 | 0 | break; |
5395 | | |
5396 | 0 | default: |
5397 | 0 | break; |
5398 | 0 | } |
5399 | 0 | } |
5400 | | |
5401 | 0 | switch (r_type) |
5402 | 0 | { |
5403 | | /* This relocation describes the C++ object vtable hierarchy. |
5404 | | Reconstruct it for later use during GC. */ |
5405 | 0 | case R_SH_GNU_VTINHERIT: |
5406 | 0 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
5407 | 0 | return false; |
5408 | 0 | break; |
5409 | | |
5410 | | /* This relocation describes which C++ vtable entries are actually |
5411 | | used. Record for later use during GC. */ |
5412 | 0 | case R_SH_GNU_VTENTRY: |
5413 | 0 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
5414 | 0 | return false; |
5415 | 0 | break; |
5416 | | |
5417 | 0 | case R_SH_TLS_IE_32: |
5418 | 0 | if (bfd_link_pic (info)) |
5419 | 0 | info->flags |= DF_STATIC_TLS; |
5420 | | |
5421 | | /* FALLTHROUGH */ |
5422 | 0 | force_got: |
5423 | 0 | case R_SH_TLS_GD_32: |
5424 | 0 | case R_SH_GOT32: |
5425 | 0 | case R_SH_GOT20: |
5426 | 0 | case R_SH_GOTFUNCDESC: |
5427 | 0 | case R_SH_GOTFUNCDESC20: |
5428 | 0 | switch (r_type) |
5429 | 0 | { |
5430 | 0 | default: |
5431 | 0 | got_type = GOT_NORMAL; |
5432 | 0 | break; |
5433 | 0 | case R_SH_TLS_GD_32: |
5434 | 0 | got_type = GOT_TLS_GD; |
5435 | 0 | break; |
5436 | 0 | case R_SH_TLS_IE_32: |
5437 | 0 | got_type = GOT_TLS_IE; |
5438 | 0 | break; |
5439 | 0 | case R_SH_GOTFUNCDESC: |
5440 | 0 | case R_SH_GOTFUNCDESC20: |
5441 | 0 | got_type = GOT_FUNCDESC; |
5442 | 0 | break; |
5443 | 0 | } |
5444 | | |
5445 | 0 | if (h != NULL) |
5446 | 0 | { |
5447 | 0 | h->got.refcount += 1; |
5448 | 0 | old_got_type = sh_elf_hash_entry (h)->got_type; |
5449 | 0 | } |
5450 | 0 | else |
5451 | 0 | { |
5452 | 0 | bfd_signed_vma *local_got_refcounts; |
5453 | | |
5454 | | /* This is a global offset table entry for a local |
5455 | | symbol. */ |
5456 | 0 | local_got_refcounts = elf_local_got_refcounts (abfd); |
5457 | 0 | if (local_got_refcounts == NULL) |
5458 | 0 | { |
5459 | 0 | bfd_size_type size; |
5460 | |
|
5461 | 0 | size = symtab_hdr->sh_info; |
5462 | 0 | size *= sizeof (bfd_signed_vma); |
5463 | 0 | size += symtab_hdr->sh_info; |
5464 | 0 | local_got_refcounts = ((bfd_signed_vma *) |
5465 | 0 | bfd_zalloc (abfd, size)); |
5466 | 0 | if (local_got_refcounts == NULL) |
5467 | 0 | return false; |
5468 | 0 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
5469 | 0 | sh_elf_local_got_type (abfd) |
5470 | 0 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); |
5471 | 0 | } |
5472 | 0 | local_got_refcounts[r_symndx] += 1; |
5473 | 0 | old_got_type = sh_elf_local_got_type (abfd) [r_symndx]; |
5474 | 0 | } |
5475 | | |
5476 | | /* If a TLS symbol is accessed using IE at least once, |
5477 | | there is no point to use dynamic model for it. */ |
5478 | 0 | if (old_got_type != got_type && old_got_type != GOT_UNKNOWN |
5479 | 0 | && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE)) |
5480 | 0 | { |
5481 | 0 | if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD) |
5482 | 0 | got_type = GOT_TLS_IE; |
5483 | 0 | else |
5484 | 0 | { |
5485 | 0 | if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC) |
5486 | 0 | && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL)) |
5487 | 0 | _bfd_error_handler |
5488 | | /* xgettext:c-format */ |
5489 | 0 | (_("%pB: `%s' accessed both as normal and FDPIC symbol"), |
5490 | 0 | abfd, h->root.root.string); |
5491 | 0 | else if (old_got_type == GOT_FUNCDESC |
5492 | 0 | || got_type == GOT_FUNCDESC) |
5493 | 0 | _bfd_error_handler |
5494 | | /* xgettext:c-format */ |
5495 | 0 | (_("%pB: `%s' accessed both as FDPIC and thread local symbol"), |
5496 | 0 | abfd, h->root.root.string); |
5497 | 0 | else |
5498 | 0 | _bfd_error_handler |
5499 | | /* xgettext:c-format */ |
5500 | 0 | (_("%pB: `%s' accessed both as normal and thread local symbol"), |
5501 | 0 | abfd, h->root.root.string); |
5502 | 0 | return false; |
5503 | 0 | } |
5504 | 0 | } |
5505 | | |
5506 | 0 | if (old_got_type != got_type) |
5507 | 0 | { |
5508 | 0 | if (h != NULL) |
5509 | 0 | sh_elf_hash_entry (h)->got_type = got_type; |
5510 | 0 | else |
5511 | 0 | sh_elf_local_got_type (abfd) [r_symndx] = got_type; |
5512 | 0 | } |
5513 | |
|
5514 | 0 | break; |
5515 | | |
5516 | 0 | case R_SH_TLS_LD_32: |
5517 | 0 | sh_elf_hash_table(info)->tls_ldm_got.refcount += 1; |
5518 | 0 | break; |
5519 | | |
5520 | 0 | case R_SH_FUNCDESC: |
5521 | 0 | case R_SH_GOTOFFFUNCDESC: |
5522 | 0 | case R_SH_GOTOFFFUNCDESC20: |
5523 | 0 | if (rel->r_addend) |
5524 | 0 | { |
5525 | 0 | _bfd_error_handler |
5526 | 0 | (_("%pB: Function descriptor relocation with non-zero addend"), |
5527 | 0 | abfd); |
5528 | 0 | return false; |
5529 | 0 | } |
5530 | | |
5531 | 0 | if (h == NULL) |
5532 | 0 | { |
5533 | 0 | union gotref *local_funcdesc; |
5534 | | |
5535 | | /* We need a function descriptor for a local symbol. */ |
5536 | 0 | local_funcdesc = sh_elf_local_funcdesc (abfd); |
5537 | 0 | if (local_funcdesc == NULL) |
5538 | 0 | { |
5539 | 0 | bfd_size_type size; |
5540 | |
|
5541 | 0 | size = symtab_hdr->sh_info * sizeof (union gotref); |
5542 | 0 | local_funcdesc = (union gotref *) bfd_zalloc (abfd, size); |
5543 | 0 | if (local_funcdesc == NULL) |
5544 | 0 | return false; |
5545 | 0 | sh_elf_local_funcdesc (abfd) = local_funcdesc; |
5546 | 0 | } |
5547 | 0 | local_funcdesc[r_symndx].refcount += 1; |
5548 | |
|
5549 | 0 | if (r_type == R_SH_FUNCDESC) |
5550 | 0 | { |
5551 | 0 | if (!bfd_link_pic (info)) |
5552 | 0 | htab->srofixup->size += 4; |
5553 | 0 | else |
5554 | 0 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
5555 | 0 | } |
5556 | 0 | } |
5557 | 0 | else |
5558 | 0 | { |
5559 | 0 | sh_elf_hash_entry (h)->funcdesc.refcount++; |
5560 | 0 | if (r_type == R_SH_FUNCDESC) |
5561 | 0 | sh_elf_hash_entry (h)->abs_funcdesc_refcount++; |
5562 | | |
5563 | | /* If there is a function descriptor reference, then |
5564 | | there should not be any non-FDPIC references. */ |
5565 | 0 | old_got_type = sh_elf_hash_entry (h)->got_type; |
5566 | 0 | if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN) |
5567 | 0 | { |
5568 | 0 | if (old_got_type == GOT_NORMAL) |
5569 | 0 | _bfd_error_handler |
5570 | | /* xgettext:c-format */ |
5571 | 0 | (_("%pB: `%s' accessed both as normal and FDPIC symbol"), |
5572 | 0 | abfd, h->root.root.string); |
5573 | 0 | else |
5574 | 0 | _bfd_error_handler |
5575 | | /* xgettext:c-format */ |
5576 | 0 | (_("%pB: `%s' accessed both as FDPIC and thread local symbol"), |
5577 | 0 | abfd, h->root.root.string); |
5578 | 0 | } |
5579 | 0 | } |
5580 | 0 | break; |
5581 | | |
5582 | 0 | case R_SH_GOTPLT32: |
5583 | | /* If this is a local symbol, we resolve it directly without |
5584 | | creating a procedure linkage table entry. */ |
5585 | |
|
5586 | 0 | if (h == NULL |
5587 | 0 | || h->forced_local |
5588 | 0 | || ! bfd_link_pic (info) |
5589 | 0 | || info->symbolic |
5590 | 0 | || h->dynindx == -1) |
5591 | 0 | goto force_got; |
5592 | | |
5593 | 0 | h->needs_plt = 1; |
5594 | 0 | h->plt.refcount += 1; |
5595 | 0 | ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1; |
5596 | |
|
5597 | 0 | break; |
5598 | | |
5599 | 0 | case R_SH_PLT32: |
5600 | | /* This symbol requires a procedure linkage table entry. We |
5601 | | actually build the entry in adjust_dynamic_symbol, |
5602 | | because this might be a case of linking PIC code which is |
5603 | | never referenced by a dynamic object, in which case we |
5604 | | don't need to generate a procedure linkage table entry |
5605 | | after all. */ |
5606 | | |
5607 | | /* If this is a local symbol, we resolve it directly without |
5608 | | creating a procedure linkage table entry. */ |
5609 | 0 | if (h == NULL) |
5610 | 0 | continue; |
5611 | | |
5612 | 0 | if (h->forced_local) |
5613 | 0 | break; |
5614 | | |
5615 | 0 | h->needs_plt = 1; |
5616 | 0 | h->plt.refcount += 1; |
5617 | 0 | break; |
5618 | | |
5619 | 0 | case R_SH_DIR32: |
5620 | 0 | case R_SH_REL32: |
5621 | 0 | if (h != NULL && ! bfd_link_pic (info)) |
5622 | 0 | { |
5623 | 0 | h->non_got_ref = 1; |
5624 | 0 | h->plt.refcount += 1; |
5625 | 0 | } |
5626 | | |
5627 | | /* If we are creating a shared library, and this is a reloc |
5628 | | against a global symbol, or a non PC relative reloc |
5629 | | against a local symbol, then we need to copy the reloc |
5630 | | into the shared library. However, if we are linking with |
5631 | | -Bsymbolic, we do not need to copy a reloc against a |
5632 | | global symbol which is defined in an object we are |
5633 | | including in the link (i.e., DEF_REGULAR is set). At |
5634 | | this point we have not seen all the input files, so it is |
5635 | | possible that DEF_REGULAR is not set now but will be set |
5636 | | later (it is never cleared). We account for that |
5637 | | possibility below by storing information in the |
5638 | | dyn_relocs field of the hash table entry. A similar |
5639 | | situation occurs when creating shared libraries and symbol |
5640 | | visibility changes render the symbol local. |
5641 | | |
5642 | | If on the other hand, we are creating an executable, we |
5643 | | may need to keep relocations for symbols satisfied by a |
5644 | | dynamic library if we manage to avoid copy relocs for the |
5645 | | symbol. */ |
5646 | 0 | if ((bfd_link_pic (info) |
5647 | 0 | && (sec->flags & SEC_ALLOC) != 0 |
5648 | 0 | && (r_type != R_SH_REL32 |
5649 | 0 | || (h != NULL |
5650 | 0 | && (! info->symbolic |
5651 | 0 | || h->root.type == bfd_link_hash_defweak |
5652 | 0 | || !h->def_regular)))) |
5653 | 0 | || (! bfd_link_pic (info) |
5654 | 0 | && (sec->flags & SEC_ALLOC) != 0 |
5655 | 0 | && h != NULL |
5656 | 0 | && (h->root.type == bfd_link_hash_defweak |
5657 | 0 | || !h->def_regular))) |
5658 | 0 | { |
5659 | 0 | struct elf_dyn_relocs *p; |
5660 | 0 | struct elf_dyn_relocs **head; |
5661 | |
|
5662 | 0 | if (htab->root.dynobj == NULL) |
5663 | 0 | htab->root.dynobj = abfd; |
5664 | | |
5665 | | /* When creating a shared object, we must copy these |
5666 | | reloc types into the output file. We create a reloc |
5667 | | section in dynobj and make room for this reloc. */ |
5668 | 0 | if (sreloc == NULL) |
5669 | 0 | { |
5670 | 0 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5671 | 0 | (sec, htab->root.dynobj, 2, abfd, /*rela?*/ true); |
5672 | |
|
5673 | 0 | if (sreloc == NULL) |
5674 | 0 | return false; |
5675 | 0 | } |
5676 | | |
5677 | | /* If this is a global symbol, we count the number of |
5678 | | relocations we need for this symbol. */ |
5679 | 0 | if (h != NULL) |
5680 | 0 | head = &h->dyn_relocs; |
5681 | 0 | else |
5682 | 0 | { |
5683 | | /* Track dynamic relocs needed for local syms too. */ |
5684 | 0 | asection *s; |
5685 | 0 | void *vpp; |
5686 | 0 | Elf_Internal_Sym *isym; |
5687 | |
|
5688 | 0 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
5689 | 0 | abfd, r_symndx); |
5690 | 0 | if (isym == NULL) |
5691 | 0 | return false; |
5692 | | |
5693 | 0 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5694 | 0 | if (s == NULL) |
5695 | 0 | s = sec; |
5696 | |
|
5697 | 0 | vpp = &elf_section_data (s)->local_dynrel; |
5698 | 0 | head = (struct elf_dyn_relocs **) vpp; |
5699 | 0 | } |
5700 | | |
5701 | 0 | p = *head; |
5702 | 0 | if (p == NULL || p->sec != sec) |
5703 | 0 | { |
5704 | 0 | size_t amt = sizeof (*p); |
5705 | 0 | p = bfd_alloc (htab->root.dynobj, amt); |
5706 | 0 | if (p == NULL) |
5707 | 0 | return false; |
5708 | 0 | p->next = *head; |
5709 | 0 | *head = p; |
5710 | 0 | p->sec = sec; |
5711 | 0 | p->count = 0; |
5712 | 0 | p->pc_count = 0; |
5713 | 0 | } |
5714 | | |
5715 | 0 | p->count += 1; |
5716 | 0 | if (r_type == R_SH_REL32) |
5717 | 0 | p->pc_count += 1; |
5718 | 0 | } |
5719 | | |
5720 | | /* Allocate the fixup regardless of whether we need a relocation. |
5721 | | If we end up generating the relocation, we'll unallocate the |
5722 | | fixup. */ |
5723 | 0 | if (htab->fdpic_p && !bfd_link_pic (info) |
5724 | 0 | && r_type == R_SH_DIR32 |
5725 | 0 | && (sec->flags & SEC_ALLOC) != 0) |
5726 | 0 | htab->srofixup->size += 4; |
5727 | 0 | break; |
5728 | | |
5729 | 0 | case R_SH_TLS_LE_32: |
5730 | 0 | if (bfd_link_dll (info)) |
5731 | 0 | { |
5732 | 0 | _bfd_error_handler |
5733 | 0 | (_("%pB: TLS local exec code cannot be linked into shared objects"), |
5734 | 0 | abfd); |
5735 | 0 | return false; |
5736 | 0 | } |
5737 | | |
5738 | 0 | break; |
5739 | | |
5740 | 0 | case R_SH_TLS_LDO_32: |
5741 | | /* Nothing to do. */ |
5742 | 0 | break; |
5743 | | |
5744 | 0 | default: |
5745 | 0 | break; |
5746 | 0 | } |
5747 | 0 | } |
5748 | | |
5749 | 0 | return true; |
5750 | 0 | } |
5751 | | |
5752 | | #ifndef sh_elf_set_mach_from_flags |
5753 | | static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE }; |
5754 | | |
5755 | | static bool |
5756 | | sh_elf_set_mach_from_flags (bfd *abfd) |
5757 | 41.1k | { |
5758 | 41.1k | flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK; |
5759 | | |
5760 | 41.1k | if (flags >= ARRAY_SIZE (sh_ef_bfd_table)) |
5761 | 16.8k | return false; |
5762 | | |
5763 | 24.2k | if (sh_ef_bfd_table[flags] == 0) |
5764 | 1.85k | return false; |
5765 | | |
5766 | 22.3k | bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]); |
5767 | | |
5768 | 22.3k | return true; |
5769 | 24.2k | } |
5770 | | |
5771 | | |
5772 | | /* Reverse table lookup for sh_ef_bfd_table[]. |
5773 | | Given a bfd MACH value from archures.c |
5774 | | return the equivalent ELF flags from the table. |
5775 | | Return -1 if no match is found. */ |
5776 | | |
5777 | | int |
5778 | | sh_elf_get_flags_from_mach (unsigned long mach) |
5779 | 0 | { |
5780 | 0 | int i = ARRAY_SIZE (sh_ef_bfd_table) - 1; |
5781 | |
|
5782 | 0 | for (; i>0; i--) |
5783 | 0 | if (sh_ef_bfd_table[i] == mach) |
5784 | 0 | return i; |
5785 | | |
5786 | | /* shouldn't get here */ |
5787 | 0 | BFD_FAIL(); |
5788 | |
|
5789 | 0 | return -1; |
5790 | 0 | } |
5791 | | #endif /* not sh_elf_set_mach_from_flags */ |
5792 | | |
5793 | | #ifndef sh_elf_copy_private_data |
5794 | | /* Copy backend specific data from one object module to another */ |
5795 | | |
5796 | | static bool |
5797 | | sh_elf_copy_private_data (bfd * ibfd, bfd * obfd) |
5798 | 1 | { |
5799 | 1 | if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd)) |
5800 | 0 | return true; |
5801 | | |
5802 | 1 | if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd)) |
5803 | 0 | return false; |
5804 | | |
5805 | 1 | return sh_elf_set_mach_from_flags (obfd); |
5806 | 1 | } |
5807 | | #endif /* not sh_elf_copy_private_data */ |
5808 | | |
5809 | | #ifndef sh_elf_merge_private_data |
5810 | | |
5811 | | /* This function returns the ELF architecture number that |
5812 | | corresponds to the given arch_sh* flags. */ |
5813 | | |
5814 | | int |
5815 | | sh_find_elf_flags (unsigned int arch_set) |
5816 | 0 | { |
5817 | 0 | extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int); |
5818 | 0 | unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set); |
5819 | |
|
5820 | 0 | return sh_elf_get_flags_from_mach (bfd_mach); |
5821 | 0 | } |
5822 | | |
5823 | | /* Merge the architecture type of two BFD files, such that the |
5824 | | resultant architecture supports all the features required |
5825 | | by the two input BFDs. |
5826 | | If the input BFDs are multually incompatible - i.e. one uses |
5827 | | DSP while the other uses FPU - or there is no known architecture |
5828 | | that fits the requirements then an error is emitted. */ |
5829 | | |
5830 | | static bool |
5831 | | sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info) |
5832 | 0 | { |
5833 | 0 | bfd *obfd = info->output_bfd; |
5834 | 0 | unsigned int old_arch, new_arch, merged_arch; |
5835 | |
|
5836 | 0 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
5837 | 0 | return false; |
5838 | | |
5839 | 0 | old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd)); |
5840 | 0 | new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd)); |
5841 | |
|
5842 | 0 | merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch); |
5843 | |
|
5844 | 0 | if (!SH_VALID_CO_ARCH_SET (merged_arch)) |
5845 | 0 | { |
5846 | 0 | _bfd_error_handler |
5847 | | /* xgettext:c-format */ |
5848 | 0 | (_("%pB: uses %s instructions while previous modules " |
5849 | 0 | "use %s instructions"), |
5850 | 0 | ibfd, |
5851 | 0 | SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point", |
5852 | 0 | SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp"); |
5853 | 0 | bfd_set_error (bfd_error_bad_value); |
5854 | 0 | return false; |
5855 | 0 | } |
5856 | 0 | else if (!SH_VALID_ARCH_SET (merged_arch)) |
5857 | 0 | { |
5858 | 0 | _bfd_error_handler |
5859 | | /* xgettext:c-format */ |
5860 | 0 | (_("internal error: merge of architecture '%s' with " |
5861 | 0 | "architecture '%s' produced unknown architecture"), |
5862 | 0 | bfd_printable_name (obfd), |
5863 | 0 | bfd_printable_name (ibfd)); |
5864 | 0 | bfd_set_error (bfd_error_bad_value); |
5865 | 0 | return false; |
5866 | 0 | } |
5867 | | |
5868 | 0 | bfd_default_set_arch_mach (obfd, bfd_arch_sh, |
5869 | 0 | sh_get_bfd_mach_from_arch_set (merged_arch)); |
5870 | |
|
5871 | 0 | return true; |
5872 | 0 | } |
5873 | | |
5874 | | /* This routine initialises the elf flags when required and |
5875 | | calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */ |
5876 | | |
5877 | | static bool |
5878 | | sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info) |
5879 | 0 | { |
5880 | 0 | bfd *obfd = info->output_bfd; |
5881 | | |
5882 | | /* FIXME: What should be checked when linking shared libraries? */ |
5883 | 0 | if ((ibfd->flags & DYNAMIC) != 0) |
5884 | 0 | return true; |
5885 | | |
5886 | 0 | if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd)) |
5887 | 0 | return true; |
5888 | | |
5889 | 0 | if (! elf_flags_init (obfd)) |
5890 | 0 | { |
5891 | | /* This happens when ld starts out with a 'blank' output file. */ |
5892 | 0 | elf_flags_init (obfd) = true; |
5893 | 0 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
5894 | 0 | sh_elf_set_mach_from_flags (obfd); |
5895 | 0 | if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC) |
5896 | 0 | elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC; |
5897 | 0 | } |
5898 | |
|
5899 | 0 | if (! sh_merge_bfd_arch (ibfd, info)) |
5900 | 0 | { |
5901 | 0 | _bfd_error_handler (_("%pB: uses instructions which are incompatible " |
5902 | 0 | "with instructions used in previous modules"), |
5903 | 0 | ibfd); |
5904 | 0 | bfd_set_error (bfd_error_bad_value); |
5905 | 0 | return false; |
5906 | 0 | } |
5907 | | |
5908 | 0 | elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK; |
5909 | 0 | elf_elfheader (obfd)->e_flags |= |
5910 | 0 | sh_elf_get_flags_from_mach (bfd_get_mach (obfd)); |
5911 | |
|
5912 | 0 | if (fdpic_object_p (ibfd) != fdpic_object_p (obfd)) |
5913 | 0 | { |
5914 | 0 | _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"), |
5915 | 0 | ibfd); |
5916 | 0 | bfd_set_error (bfd_error_bad_value); |
5917 | 0 | return false; |
5918 | 0 | } |
5919 | | |
5920 | 0 | return true; |
5921 | 0 | } |
5922 | | #endif /* not sh_elf_merge_private_data */ |
5923 | | |
5924 | | /* Override the generic function because we need to store sh_elf_obj_tdata |
5925 | | as the specific tdata. We set also the machine architecture from flags |
5926 | | here. */ |
5927 | | |
5928 | | static bool |
5929 | | sh_elf_object_p (bfd *abfd) |
5930 | 41.1k | { |
5931 | 41.1k | if (! sh_elf_set_mach_from_flags (abfd)) |
5932 | 18.7k | return false; |
5933 | | |
5934 | 22.3k | return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0) |
5935 | 22.3k | == fdpic_object_p (abfd)); |
5936 | 41.1k | } |
5937 | | |
5938 | | /* Finish up dynamic symbol handling. We set the contents of various |
5939 | | dynamic sections here. */ |
5940 | | |
5941 | | static bool |
5942 | | sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
5943 | | struct elf_link_hash_entry *h, |
5944 | | Elf_Internal_Sym *sym) |
5945 | 0 | { |
5946 | 0 | struct elf_sh_link_hash_table *htab; |
5947 | |
|
5948 | 0 | htab = sh_elf_hash_table (info); |
5949 | |
|
5950 | 0 | if (h->plt.offset != (bfd_vma) -1) |
5951 | 0 | { |
5952 | 0 | asection *splt; |
5953 | 0 | asection *sgotplt; |
5954 | 0 | asection *srelplt; |
5955 | |
|
5956 | 0 | bfd_vma plt_index; |
5957 | 0 | bfd_vma got_offset; |
5958 | 0 | Elf_Internal_Rela rel; |
5959 | 0 | bfd_byte *loc; |
5960 | 0 | const struct elf_sh_plt_info *plt_info; |
5961 | | |
5962 | | /* This symbol has an entry in the procedure linkage table. Set |
5963 | | it up. */ |
5964 | |
|
5965 | 0 | BFD_ASSERT (h->dynindx != -1); |
5966 | |
|
5967 | 0 | splt = htab->root.splt; |
5968 | 0 | sgotplt = htab->root.sgotplt; |
5969 | 0 | srelplt = htab->root.srelplt; |
5970 | 0 | BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL); |
5971 | | |
5972 | | /* Get the index in the procedure linkage table which |
5973 | | corresponds to this symbol. This is the index of this symbol |
5974 | | in all the symbols for which we are making plt entries. The |
5975 | | first entry in the procedure linkage table is reserved. */ |
5976 | 0 | plt_index = get_plt_index (htab->plt_info, h->plt.offset); |
5977 | |
|
5978 | 0 | plt_info = htab->plt_info; |
5979 | 0 | if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT) |
5980 | 0 | plt_info = plt_info->short_plt; |
5981 | | |
5982 | | /* Get the offset into the .got table of the entry that |
5983 | | corresponds to this function. */ |
5984 | 0 | if (htab->fdpic_p) |
5985 | | /* The offset must be relative to the GOT symbol, twelve bytes |
5986 | | before the end of .got.plt. Each descriptor is eight |
5987 | | bytes. */ |
5988 | 0 | got_offset = plt_index * 8 + 12 - sgotplt->size; |
5989 | 0 | else |
5990 | | /* Each .got entry is 4 bytes. The first three are |
5991 | | reserved. */ |
5992 | 0 | got_offset = (plt_index + 3) * 4; |
5993 | |
|
5994 | | #ifdef GOT_BIAS |
5995 | | if (bfd_link_pic (info)) |
5996 | | got_offset -= GOT_BIAS; |
5997 | | #endif |
5998 | | |
5999 | | /* Fill in the entry in the procedure linkage table. */ |
6000 | 0 | memcpy (splt->contents + h->plt.offset, |
6001 | 0 | plt_info->symbol_entry, |
6002 | 0 | plt_info->symbol_entry_size); |
6003 | |
|
6004 | 0 | if (bfd_link_pic (info) || htab->fdpic_p) |
6005 | 0 | { |
6006 | 0 | if (plt_info->symbol_fields.got20) |
6007 | 0 | { |
6008 | 0 | bfd_reloc_status_type r; |
6009 | 0 | r = install_movi20_field (output_bfd, got_offset, |
6010 | 0 | splt->owner, splt, splt->contents, |
6011 | 0 | h->plt.offset |
6012 | 0 | + plt_info->symbol_fields.got_entry); |
6013 | 0 | BFD_ASSERT (r == bfd_reloc_ok); |
6014 | 0 | } |
6015 | 0 | else |
6016 | 0 | install_plt_field (output_bfd, false, got_offset, |
6017 | 0 | (splt->contents |
6018 | 0 | + h->plt.offset |
6019 | 0 | + plt_info->symbol_fields.got_entry)); |
6020 | 0 | } |
6021 | 0 | else |
6022 | 0 | { |
6023 | 0 | BFD_ASSERT (!plt_info->symbol_fields.got20); |
6024 | |
|
6025 | 0 | install_plt_field (output_bfd, false, |
6026 | 0 | (sgotplt->output_section->vma |
6027 | 0 | + sgotplt->output_offset |
6028 | 0 | + got_offset), |
6029 | 0 | (splt->contents |
6030 | 0 | + h->plt.offset |
6031 | 0 | + plt_info->symbol_fields.got_entry)); |
6032 | 0 | if (htab->root.target_os == is_vxworks) |
6033 | 0 | { |
6034 | 0 | unsigned int reachable_plts, plts_per_4k; |
6035 | 0 | int distance; |
6036 | | |
6037 | | /* Divide the PLT into groups. The first group contains |
6038 | | REACHABLE_PLTS entries and the other groups contain |
6039 | | PLTS_PER_4K entries. Entries in the first group can |
6040 | | branch directly to .plt; those in later groups branch |
6041 | | to the last element of the previous group. */ |
6042 | | /* ??? It would be better to create multiple copies of |
6043 | | the common resolver stub. */ |
6044 | 0 | reachable_plts = ((4096 |
6045 | 0 | - plt_info->plt0_entry_size |
6046 | 0 | - (plt_info->symbol_fields.plt + 4)) |
6047 | 0 | / plt_info->symbol_entry_size) + 1; |
6048 | 0 | plts_per_4k = (4096 / plt_info->symbol_entry_size); |
6049 | 0 | if (plt_index < reachable_plts) |
6050 | 0 | distance = -(h->plt.offset |
6051 | 0 | + plt_info->symbol_fields.plt); |
6052 | 0 | else |
6053 | 0 | distance = -(((plt_index - reachable_plts) % plts_per_4k + 1) |
6054 | 0 | * plt_info->symbol_entry_size); |
6055 | | |
6056 | | /* Install the 'bra' with this offset. */ |
6057 | 0 | bfd_put_16 (output_bfd, |
6058 | 0 | 0xa000 | (0x0fff & ((distance - 4) / 2)), |
6059 | 0 | (splt->contents |
6060 | 0 | + h->plt.offset |
6061 | 0 | + plt_info->symbol_fields.plt)); |
6062 | 0 | } |
6063 | 0 | else |
6064 | 0 | install_plt_field (output_bfd, true, |
6065 | 0 | splt->output_section->vma + splt->output_offset, |
6066 | 0 | (splt->contents |
6067 | 0 | + h->plt.offset |
6068 | 0 | + plt_info->symbol_fields.plt)); |
6069 | 0 | } |
6070 | | |
6071 | | /* Make got_offset relative to the start of .got.plt. */ |
6072 | | #ifdef GOT_BIAS |
6073 | | if (bfd_link_pic (info)) |
6074 | | got_offset += GOT_BIAS; |
6075 | | #endif |
6076 | 0 | if (htab->fdpic_p) |
6077 | 0 | got_offset = plt_index * 8; |
6078 | |
|
6079 | 0 | if (plt_info->symbol_fields.reloc_offset != MINUS_ONE) |
6080 | 0 | install_plt_field (output_bfd, false, |
6081 | 0 | plt_index * sizeof (Elf32_External_Rela), |
6082 | 0 | (splt->contents |
6083 | 0 | + h->plt.offset |
6084 | 0 | + plt_info->symbol_fields.reloc_offset)); |
6085 | | |
6086 | | /* Fill in the entry in the global offset table. */ |
6087 | 0 | bfd_put_32 (output_bfd, |
6088 | 0 | (splt->output_section->vma |
6089 | 0 | + splt->output_offset |
6090 | 0 | + h->plt.offset |
6091 | 0 | + plt_info->symbol_resolve_offset), |
6092 | 0 | sgotplt->contents + got_offset); |
6093 | 0 | if (htab->fdpic_p) |
6094 | 0 | bfd_put_32 (output_bfd, |
6095 | 0 | sh_elf_osec_to_segment (output_bfd, splt->output_section), |
6096 | 0 | sgotplt->contents + got_offset + 4); |
6097 | | |
6098 | | /* Fill in the entry in the .rela.plt section. */ |
6099 | 0 | rel.r_offset = (sgotplt->output_section->vma |
6100 | 0 | + sgotplt->output_offset |
6101 | 0 | + got_offset); |
6102 | 0 | if (htab->fdpic_p) |
6103 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE); |
6104 | 0 | else |
6105 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT); |
6106 | 0 | rel.r_addend = 0; |
6107 | | #ifdef GOT_BIAS |
6108 | | rel.r_addend = GOT_BIAS; |
6109 | | #endif |
6110 | 0 | loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela); |
6111 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
6112 | |
|
6113 | 0 | if (htab->root.target_os == is_vxworks && !bfd_link_pic (info)) |
6114 | 0 | { |
6115 | | /* Create the .rela.plt.unloaded relocations for this PLT entry. |
6116 | | Begin by pointing LOC to the first such relocation. */ |
6117 | 0 | loc = (htab->srelplt2->contents |
6118 | 0 | + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela)); |
6119 | | |
6120 | | /* Create a .rela.plt.unloaded R_SH_DIR32 relocation |
6121 | | for the PLT entry's pointer to the .got.plt entry. */ |
6122 | 0 | rel.r_offset = (splt->output_section->vma |
6123 | 0 | + splt->output_offset |
6124 | 0 | + h->plt.offset |
6125 | 0 | + plt_info->symbol_fields.got_entry); |
6126 | 0 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32); |
6127 | 0 | rel.r_addend = got_offset; |
6128 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
6129 | 0 | loc += sizeof (Elf32_External_Rela); |
6130 | | |
6131 | | /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for |
6132 | | the .got.plt entry, which initially points to .plt. */ |
6133 | 0 | rel.r_offset = (sgotplt->output_section->vma |
6134 | 0 | + sgotplt->output_offset |
6135 | 0 | + got_offset); |
6136 | 0 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32); |
6137 | 0 | rel.r_addend = 0; |
6138 | 0 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
6139 | 0 | } |
6140 | |
|
6141 | 0 | if (!h->def_regular) |
6142 | 0 | { |
6143 | | /* Mark the symbol as undefined, rather than as defined in |
6144 | | the .plt section. Leave the value alone. */ |
6145 | 0 | sym->st_shndx = SHN_UNDEF; |
6146 | 0 | } |
6147 | 0 | } |
6148 | |
|
6149 | 0 | if (h->got.offset != (bfd_vma) -1 |
6150 | 0 | && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD |
6151 | 0 | && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE |
6152 | 0 | && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC) |
6153 | 0 | { |
6154 | 0 | asection *sgot; |
6155 | 0 | asection *srelgot; |
6156 | 0 | Elf_Internal_Rela rel; |
6157 | 0 | bfd_byte *loc; |
6158 | | |
6159 | | /* This symbol has an entry in the global offset table. Set it |
6160 | | up. */ |
6161 | |
|
6162 | 0 | sgot = htab->root.sgot; |
6163 | 0 | srelgot = htab->root.srelgot; |
6164 | 0 | BFD_ASSERT (sgot != NULL && srelgot != NULL); |
6165 | |
|
6166 | 0 | rel.r_offset = (sgot->output_section->vma |
6167 | 0 | + sgot->output_offset |
6168 | 0 | + (h->got.offset &~ (bfd_vma) 1)); |
6169 | | |
6170 | | /* If this is a static link, or it is a -Bsymbolic link and the |
6171 | | symbol is defined locally or was forced to be local because |
6172 | | of a version file, we just want to emit a RELATIVE reloc. |
6173 | | The entry in the global offset table will already have been |
6174 | | initialized in the relocate_section function. */ |
6175 | 0 | if (bfd_link_pic (info) |
6176 | 0 | && (h->root.type == bfd_link_hash_defined |
6177 | 0 | || h->root.type == bfd_link_hash_defweak) |
6178 | 0 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
6179 | 0 | { |
6180 | 0 | if (htab->fdpic_p) |
6181 | 0 | { |
6182 | 0 | asection *sec = h->root.u.def.section; |
6183 | 0 | int dynindx |
6184 | 0 | = elf_section_data (sec->output_section)->dynindx; |
6185 | |
|
6186 | 0 | rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32); |
6187 | 0 | rel.r_addend = (h->root.u.def.value |
6188 | 0 | + h->root.u.def.section->output_offset); |
6189 | 0 | } |
6190 | 0 | else |
6191 | 0 | { |
6192 | 0 | rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); |
6193 | 0 | rel.r_addend = (h->root.u.def.value |
6194 | 0 | + h->root.u.def.section->output_section->vma |
6195 | 0 | + h->root.u.def.section->output_offset); |
6196 | 0 | } |
6197 | 0 | } |
6198 | 0 | else |
6199 | 0 | { |
6200 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
6201 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT); |
6202 | 0 | rel.r_addend = 0; |
6203 | 0 | } |
6204 | |
|
6205 | 0 | loc = srelgot->contents; |
6206 | 0 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); |
6207 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
6208 | 0 | } |
6209 | |
|
6210 | 0 | if (h->needs_copy) |
6211 | 0 | { |
6212 | 0 | asection *s; |
6213 | 0 | Elf_Internal_Rela rel; |
6214 | 0 | bfd_byte *loc; |
6215 | | |
6216 | | /* This symbol needs a copy reloc. Set it up. */ |
6217 | |
|
6218 | 0 | BFD_ASSERT (h->dynindx != -1 |
6219 | 0 | && (h->root.type == bfd_link_hash_defined |
6220 | 0 | || h->root.type == bfd_link_hash_defweak)); |
6221 | |
|
6222 | 0 | s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); |
6223 | 0 | BFD_ASSERT (s != NULL); |
6224 | |
|
6225 | 0 | rel.r_offset = (h->root.u.def.value |
6226 | 0 | + h->root.u.def.section->output_section->vma |
6227 | 0 | + h->root.u.def.section->output_offset); |
6228 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY); |
6229 | 0 | rel.r_addend = 0; |
6230 | 0 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
6231 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
6232 | 0 | } |
6233 | | |
6234 | | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
6235 | | _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the |
6236 | | ".got" section. */ |
6237 | 0 | if (h == htab->root.hdynamic |
6238 | 0 | || (htab->root.target_os != is_vxworks && h == htab->root.hgot)) |
6239 | 0 | sym->st_shndx = SHN_ABS; |
6240 | |
|
6241 | 0 | return true; |
6242 | 0 | } |
6243 | | |
6244 | | /* Finish up the dynamic sections. */ |
6245 | | |
6246 | | static bool |
6247 | | sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
6248 | 0 | { |
6249 | 0 | struct elf_sh_link_hash_table *htab; |
6250 | 0 | asection *sgotplt; |
6251 | 0 | asection *sdyn; |
6252 | |
|
6253 | 0 | htab = sh_elf_hash_table (info); |
6254 | 0 | if (htab == NULL) |
6255 | 0 | return false; |
6256 | | |
6257 | 0 | sgotplt = htab->root.sgotplt; |
6258 | 0 | sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic"); |
6259 | |
|
6260 | 0 | if (htab->root.dynamic_sections_created) |
6261 | 0 | { |
6262 | 0 | asection *splt; |
6263 | 0 | Elf32_External_Dyn *dyncon, *dynconend; |
6264 | |
|
6265 | 0 | BFD_ASSERT (sgotplt != NULL && sdyn != NULL); |
6266 | |
|
6267 | 0 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
6268 | 0 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
6269 | 0 | for (; dyncon < dynconend; dyncon++) |
6270 | 0 | { |
6271 | 0 | Elf_Internal_Dyn dyn; |
6272 | 0 | asection *s; |
6273 | |
|
6274 | 0 | bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn); |
6275 | |
|
6276 | 0 | switch (dyn.d_tag) |
6277 | 0 | { |
6278 | 0 | default: |
6279 | 0 | if (htab->root.target_os == is_vxworks |
6280 | 0 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) |
6281 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
6282 | 0 | break; |
6283 | | |
6284 | 0 | case DT_PLTGOT: |
6285 | 0 | BFD_ASSERT (htab->root.hgot != NULL); |
6286 | 0 | s = htab->root.hgot->root.u.def.section; |
6287 | 0 | dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value |
6288 | 0 | + s->output_section->vma + s->output_offset; |
6289 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
6290 | 0 | break; |
6291 | | |
6292 | 0 | case DT_JMPREL: |
6293 | 0 | s = htab->root.srelplt; |
6294 | 0 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
6295 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
6296 | 0 | break; |
6297 | | |
6298 | 0 | case DT_PLTRELSZ: |
6299 | 0 | s = htab->root.srelplt; |
6300 | 0 | dyn.d_un.d_val = s->size; |
6301 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
6302 | 0 | break; |
6303 | 0 | } |
6304 | 0 | } |
6305 | | |
6306 | | /* Fill in the first entry in the procedure linkage table. */ |
6307 | 0 | splt = htab->root.splt; |
6308 | 0 | if (splt && splt->size > 0 && htab->plt_info->plt0_entry) |
6309 | 0 | { |
6310 | 0 | unsigned int i; |
6311 | |
|
6312 | 0 | memcpy (splt->contents, |
6313 | 0 | htab->plt_info->plt0_entry, |
6314 | 0 | htab->plt_info->plt0_entry_size); |
6315 | 0 | for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++) |
6316 | 0 | if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE) |
6317 | 0 | install_plt_field (output_bfd, false, |
6318 | 0 | (sgotplt->output_section->vma |
6319 | 0 | + sgotplt->output_offset |
6320 | 0 | + (i * 4)), |
6321 | 0 | (splt->contents |
6322 | 0 | + htab->plt_info->plt0_got_fields[i])); |
6323 | |
|
6324 | 0 | if (htab->root.target_os == is_vxworks) |
6325 | 0 | { |
6326 | | /* Finalize the .rela.plt.unloaded contents. */ |
6327 | 0 | Elf_Internal_Rela rel; |
6328 | 0 | bfd_byte *loc; |
6329 | | |
6330 | | /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the |
6331 | | first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */ |
6332 | 0 | loc = htab->srelplt2->contents; |
6333 | 0 | rel.r_offset = (splt->output_section->vma |
6334 | 0 | + splt->output_offset |
6335 | 0 | + htab->plt_info->plt0_got_fields[2]); |
6336 | 0 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32); |
6337 | 0 | rel.r_addend = 8; |
6338 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
6339 | 0 | loc += sizeof (Elf32_External_Rela); |
6340 | | |
6341 | | /* Fix up the remaining .rela.plt.unloaded relocations. |
6342 | | They may have the wrong symbol index for _G_O_T_ or |
6343 | | _P_L_T_ depending on the order in which symbols were |
6344 | | output. */ |
6345 | 0 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) |
6346 | 0 | { |
6347 | | /* The PLT entry's pointer to the .got.plt slot. */ |
6348 | 0 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); |
6349 | 0 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, |
6350 | 0 | R_SH_DIR32); |
6351 | 0 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
6352 | 0 | loc += sizeof (Elf32_External_Rela); |
6353 | | |
6354 | | /* The .got.plt slot's pointer to .plt. */ |
6355 | 0 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); |
6356 | 0 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, |
6357 | 0 | R_SH_DIR32); |
6358 | 0 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
6359 | 0 | loc += sizeof (Elf32_External_Rela); |
6360 | 0 | } |
6361 | 0 | } |
6362 | | |
6363 | | /* UnixWare sets the entsize of .plt to 4, although that doesn't |
6364 | | really seem like the right value. */ |
6365 | 0 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; |
6366 | 0 | } |
6367 | 0 | } |
6368 | | |
6369 | | /* Fill in the first three entries in the global offset table. */ |
6370 | 0 | if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p) |
6371 | 0 | { |
6372 | 0 | if (sdyn == NULL) |
6373 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents); |
6374 | 0 | else |
6375 | 0 | bfd_put_32 (output_bfd, |
6376 | 0 | sdyn->output_section->vma + sdyn->output_offset, |
6377 | 0 | sgotplt->contents); |
6378 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4); |
6379 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8); |
6380 | 0 | } |
6381 | |
|
6382 | 0 | if (sgotplt && sgotplt->size > 0) |
6383 | 0 | elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4; |
6384 | | |
6385 | | /* At the very end of the .rofixup section is a pointer to the GOT. */ |
6386 | 0 | if (htab->fdpic_p && htab->srofixup != NULL) |
6387 | 0 | { |
6388 | 0 | struct elf_link_hash_entry *hgot = htab->root.hgot; |
6389 | 0 | bfd_vma got_value = hgot->root.u.def.value |
6390 | 0 | + hgot->root.u.def.section->output_section->vma |
6391 | 0 | + hgot->root.u.def.section->output_offset; |
6392 | |
|
6393 | 0 | sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value); |
6394 | | |
6395 | | /* Make sure we allocated and generated the same number of fixups. */ |
6396 | 0 | BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size); |
6397 | 0 | } |
6398 | |
|
6399 | 0 | if (htab->srelfuncdesc) |
6400 | 0 | BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela) |
6401 | 0 | == htab->srelfuncdesc->size); |
6402 | |
|
6403 | 0 | if (htab->root.srelgot) |
6404 | 0 | BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela) |
6405 | 0 | == htab->root.srelgot->size); |
6406 | |
|
6407 | 0 | return true; |
6408 | 0 | } |
6409 | | |
6410 | | static enum elf_reloc_type_class |
6411 | | sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
6412 | | const asection *rel_sec ATTRIBUTE_UNUSED, |
6413 | | const Elf_Internal_Rela *rela) |
6414 | 0 | { |
6415 | 0 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
6416 | 0 | { |
6417 | 0 | case R_SH_RELATIVE: |
6418 | 0 | return reloc_class_relative; |
6419 | 0 | case R_SH_JMP_SLOT: |
6420 | 0 | return reloc_class_plt; |
6421 | 0 | case R_SH_COPY: |
6422 | 0 | return reloc_class_copy; |
6423 | 0 | default: |
6424 | 0 | return reloc_class_normal; |
6425 | 0 | } |
6426 | 0 | } |
6427 | | |
6428 | | #if !defined SH_TARGET_ALREADY_DEFINED |
6429 | | /* Support for Linux core dump NOTE sections. */ |
6430 | | |
6431 | | static bool |
6432 | | elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
6433 | 1 | { |
6434 | 1 | int offset; |
6435 | 1 | unsigned int size; |
6436 | | |
6437 | 1 | switch (note->descsz) |
6438 | 1 | { |
6439 | 1 | default: |
6440 | 1 | return false; |
6441 | | |
6442 | 0 | case 168: /* Linux/SH */ |
6443 | | /* pr_cursig */ |
6444 | 0 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
6445 | | |
6446 | | /* pr_pid */ |
6447 | 0 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
6448 | | |
6449 | | /* pr_reg */ |
6450 | 0 | offset = 72; |
6451 | 0 | size = 92; |
6452 | |
|
6453 | 0 | break; |
6454 | 1 | } |
6455 | | |
6456 | | /* Make a ".reg/999" section. */ |
6457 | 0 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
6458 | 0 | size, note->descpos + offset); |
6459 | 1 | } |
6460 | | |
6461 | | static bool |
6462 | | elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
6463 | 8 | { |
6464 | 8 | switch (note->descsz) |
6465 | 8 | { |
6466 | 8 | default: |
6467 | 8 | return false; |
6468 | | |
6469 | 0 | case 124: /* Linux/SH elf_prpsinfo */ |
6470 | 0 | elf_tdata (abfd)->core->program |
6471 | 0 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
6472 | 0 | elf_tdata (abfd)->core->command |
6473 | 0 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
6474 | 8 | } |
6475 | | |
6476 | | /* Note that for some reason, a spurious space is tacked |
6477 | | onto the end of the args in some (at least one anyway) |
6478 | | implementations, so strip it off if it exists. */ |
6479 | | |
6480 | 0 | { |
6481 | 0 | char *command = elf_tdata (abfd)->core->command; |
6482 | 0 | int n = strlen (command); |
6483 | |
|
6484 | 0 | if (0 < n && command[n - 1] == ' ') |
6485 | 0 | command[n - 1] = '\0'; |
6486 | 0 | } |
6487 | |
|
6488 | 0 | return true; |
6489 | 8 | } |
6490 | | #endif /* not SH_TARGET_ALREADY_DEFINED */ |
6491 | | |
6492 | | |
6493 | | /* Return address for Ith PLT stub in section PLT, for relocation REL |
6494 | | or (bfd_vma) -1 if it should not be included. */ |
6495 | | |
6496 | | static bfd_vma |
6497 | | sh_elf_plt_sym_val (bfd_vma i, const asection *plt, |
6498 | | const arelent *rel ATTRIBUTE_UNUSED) |
6499 | 540 | { |
6500 | 540 | const struct elf_sh_plt_info *plt_info; |
6501 | | |
6502 | 540 | plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0); |
6503 | 540 | return plt->vma + get_plt_offset (plt_info, i); |
6504 | 540 | } |
6505 | | |
6506 | | /* Decide whether to attempt to turn absptr or lsda encodings in |
6507 | | shared libraries into pcrel within the given input section. */ |
6508 | | |
6509 | | static bool |
6510 | | sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED, |
6511 | | struct bfd_link_info *info, |
6512 | | asection *eh_frame_section ATTRIBUTE_UNUSED) |
6513 | 0 | { |
6514 | 0 | struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info); |
6515 | | |
6516 | | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ |
6517 | 0 | if (htab->fdpic_p) |
6518 | 0 | return false; |
6519 | | |
6520 | 0 | return true; |
6521 | 0 | } |
6522 | | |
6523 | | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
6524 | | |
6525 | | static bfd_byte |
6526 | | sh_elf_encode_eh_address (bfd *abfd, |
6527 | | struct bfd_link_info *info, |
6528 | | asection *osec, bfd_vma offset, |
6529 | | asection *loc_sec, bfd_vma loc_offset, |
6530 | | bfd_vma *encoded) |
6531 | 0 | { |
6532 | 0 | struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info); |
6533 | 0 | struct elf_link_hash_entry *h; |
6534 | |
|
6535 | 0 | if (!htab->fdpic_p) |
6536 | 0 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec, |
6537 | 0 | loc_offset, encoded); |
6538 | | |
6539 | 0 | h = htab->root.hgot; |
6540 | 0 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); |
6541 | |
|
6542 | 0 | if (! h || (sh_elf_osec_to_segment (abfd, osec) |
6543 | 0 | == sh_elf_osec_to_segment (abfd, loc_sec->output_section))) |
6544 | 0 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, |
6545 | 0 | loc_sec, loc_offset, encoded); |
6546 | | |
6547 | 0 | BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec) |
6548 | 0 | == (sh_elf_osec_to_segment |
6549 | 0 | (abfd, h->root.u.def.section->output_section))); |
6550 | |
|
6551 | 0 | *encoded = osec->vma + offset |
6552 | 0 | - (h->root.u.def.value |
6553 | 0 | + h->root.u.def.section->output_section->vma |
6554 | 0 | + h->root.u.def.section->output_offset); |
6555 | |
|
6556 | 0 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; |
6557 | 0 | } |
6558 | | |
6559 | | #if !defined SH_TARGET_ALREADY_DEFINED |
6560 | | #define TARGET_BIG_SYM sh_elf32_vec |
6561 | | #define TARGET_BIG_NAME "elf32-sh" |
6562 | | #define TARGET_LITTLE_SYM sh_elf32_le_vec |
6563 | | #define TARGET_LITTLE_NAME "elf32-shl" |
6564 | | #endif |
6565 | | |
6566 | | #define ELF_ARCH bfd_arch_sh |
6567 | | #define ELF_TARGET_ID SH_ELF_DATA |
6568 | | #define ELF_MACHINE_CODE EM_SH |
6569 | | #ifdef __QNXTARGET__ |
6570 | | #define ELF_MAXPAGESIZE 0x1000 |
6571 | | #else |
6572 | | #define ELF_MAXPAGESIZE 0x80 |
6573 | | #endif |
6574 | | |
6575 | | #define elf_symbol_leading_char '_' |
6576 | | |
6577 | | #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup |
6578 | | #define bfd_elf32_bfd_reloc_name_lookup \ |
6579 | | sh_elf_reloc_name_lookup |
6580 | | #define elf_info_to_howto sh_elf_info_to_howto |
6581 | | #define bfd_elf32_bfd_relax_section sh_elf_relax_section |
6582 | | #define elf_backend_relocate_section sh_elf_relocate_section |
6583 | | #define bfd_elf32_bfd_get_relocated_section_contents \ |
6584 | | sh_elf_get_relocated_section_contents |
6585 | | #define bfd_elf32_mkobject sh_elf_mkobject |
6586 | | #define elf_backend_object_p sh_elf_object_p |
6587 | | #define bfd_elf32_bfd_copy_private_bfd_data \ |
6588 | | sh_elf_copy_private_data |
6589 | | #define bfd_elf32_bfd_merge_private_bfd_data \ |
6590 | | sh_elf_merge_private_data |
6591 | | |
6592 | | #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook |
6593 | | #define elf_backend_check_relocs sh_elf_check_relocs |
6594 | | #define elf_backend_copy_indirect_symbol \ |
6595 | | sh_elf_copy_indirect_symbol |
6596 | | #define elf_backend_create_dynamic_sections \ |
6597 | | sh_elf_create_dynamic_sections |
6598 | | #define bfd_elf32_bfd_link_hash_table_create \ |
6599 | | sh_elf_link_hash_table_create |
6600 | | #define elf_backend_adjust_dynamic_symbol \ |
6601 | | sh_elf_adjust_dynamic_symbol |
6602 | | #define elf_backend_early_size_sections sh_elf_early_size_sections |
6603 | | #define elf_backend_late_size_sections sh_elf_late_size_sections |
6604 | | #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym |
6605 | | #define elf_backend_finish_dynamic_symbol \ |
6606 | | sh_elf_finish_dynamic_symbol |
6607 | | #define elf_backend_finish_dynamic_sections \ |
6608 | | sh_elf_finish_dynamic_sections |
6609 | | #define elf_backend_reloc_type_class sh_elf_reloc_type_class |
6610 | | #define elf_backend_plt_sym_val sh_elf_plt_sym_val |
6611 | | #define elf_backend_can_make_relative_eh_frame \ |
6612 | | sh_elf_use_relative_eh_frame |
6613 | | #define elf_backend_can_make_lsda_relative_eh_frame \ |
6614 | | sh_elf_use_relative_eh_frame |
6615 | | #define elf_backend_encode_eh_address \ |
6616 | | sh_elf_encode_eh_address |
6617 | | |
6618 | | #define elf_backend_stack_align 8 |
6619 | | #define elf_backend_can_gc_sections 1 |
6620 | | #define elf_backend_can_refcount 1 |
6621 | | #define elf_backend_want_got_plt 1 |
6622 | | #define elf_backend_plt_readonly 1 |
6623 | | #define elf_backend_want_plt_sym 0 |
6624 | | #define elf_backend_got_header_size 12 |
6625 | | #define elf_backend_dtrel_excludes_plt 1 |
6626 | | |
6627 | | #define elf_backend_linux_prpsinfo32_ugid16 true |
6628 | | |
6629 | | #if !defined SH_TARGET_ALREADY_DEFINED |
6630 | | |
6631 | | #include "elf32-target.h" |
6632 | | |
6633 | | /* NetBSD support. */ |
6634 | | #undef TARGET_BIG_SYM |
6635 | | #define TARGET_BIG_SYM sh_elf32_nbsd_vec |
6636 | | #undef TARGET_BIG_NAME |
6637 | | #define TARGET_BIG_NAME "elf32-sh-nbsd" |
6638 | | #undef TARGET_LITTLE_SYM |
6639 | | #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec |
6640 | | #undef TARGET_LITTLE_NAME |
6641 | | #define TARGET_LITTLE_NAME "elf32-shl-nbsd" |
6642 | | #undef ELF_MAXPAGESIZE |
6643 | | #define ELF_MAXPAGESIZE 0x10000 |
6644 | | #undef ELF_COMMONPAGESIZE |
6645 | | #undef elf_symbol_leading_char |
6646 | | #define elf_symbol_leading_char 0 |
6647 | | #undef elf32_bed |
6648 | | #define elf32_bed elf32_sh_nbsd_bed |
6649 | | |
6650 | | #include "elf32-target.h" |
6651 | | |
6652 | | |
6653 | | /* Linux support. */ |
6654 | | #undef TARGET_BIG_SYM |
6655 | | #define TARGET_BIG_SYM sh_elf32_linux_be_vec |
6656 | | #undef TARGET_BIG_NAME |
6657 | | #define TARGET_BIG_NAME "elf32-shbig-linux" |
6658 | | #undef TARGET_LITTLE_SYM |
6659 | | #define TARGET_LITTLE_SYM sh_elf32_linux_vec |
6660 | | #undef TARGET_LITTLE_NAME |
6661 | | #define TARGET_LITTLE_NAME "elf32-sh-linux" |
6662 | | #undef ELF_COMMONPAGESIZE |
6663 | | #define ELF_COMMONPAGESIZE 0x1000 |
6664 | | |
6665 | | #undef elf_backend_grok_prstatus |
6666 | | #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus |
6667 | | #undef elf_backend_grok_psinfo |
6668 | | #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo |
6669 | | #undef elf32_bed |
6670 | | #define elf32_bed elf32_sh_lin_bed |
6671 | | |
6672 | | #include "elf32-target.h" |
6673 | | |
6674 | | |
6675 | | /* FDPIC support. */ |
6676 | | #undef TARGET_BIG_SYM |
6677 | | #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec |
6678 | | #undef TARGET_BIG_NAME |
6679 | | #define TARGET_BIG_NAME "elf32-shbig-fdpic" |
6680 | | #undef TARGET_LITTLE_SYM |
6681 | | #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec |
6682 | | #undef TARGET_LITTLE_NAME |
6683 | | #define TARGET_LITTLE_NAME "elf32-sh-fdpic" |
6684 | | |
6685 | | #undef elf32_bed |
6686 | | #define elf32_bed elf32_sh_fd_bed |
6687 | | |
6688 | | #include "elf32-target.h" |
6689 | | |
6690 | | /* VxWorks support. */ |
6691 | | #undef TARGET_BIG_SYM |
6692 | | #define TARGET_BIG_SYM sh_elf32_vxworks_vec |
6693 | | #undef TARGET_BIG_NAME |
6694 | | #define TARGET_BIG_NAME "elf32-sh-vxworks" |
6695 | | #undef TARGET_LITTLE_SYM |
6696 | | #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec |
6697 | | #undef TARGET_LITTLE_NAME |
6698 | | #define TARGET_LITTLE_NAME "elf32-shl-vxworks" |
6699 | | #undef elf32_bed |
6700 | | #define elf32_bed elf32_sh_vxworks_bed |
6701 | | |
6702 | | #undef elf_backend_want_plt_sym |
6703 | | #define elf_backend_want_plt_sym 1 |
6704 | | #undef elf_symbol_leading_char |
6705 | | #define elf_symbol_leading_char '_' |
6706 | | #define elf_backend_want_got_underscore 1 |
6707 | | #undef elf_backend_grok_prstatus |
6708 | | #undef elf_backend_grok_psinfo |
6709 | | #undef elf_backend_add_symbol_hook |
6710 | | #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook |
6711 | | #undef elf_backend_link_output_symbol_hook |
6712 | | #define elf_backend_link_output_symbol_hook \ |
6713 | | elf_vxworks_link_output_symbol_hook |
6714 | | #undef elf_backend_emit_relocs |
6715 | | #define elf_backend_emit_relocs elf_vxworks_emit_relocs |
6716 | | #undef elf_backend_final_write_processing |
6717 | | #define elf_backend_final_write_processing \ |
6718 | | elf_vxworks_final_write_processing |
6719 | | #undef ELF_MAXPAGESIZE |
6720 | | #define ELF_MAXPAGESIZE 0x1000 |
6721 | | #undef ELF_COMMONPAGESIZE |
6722 | | |
6723 | | #undef ELF_TARGET_OS |
6724 | | #define ELF_TARGET_OS is_vxworks |
6725 | | |
6726 | | #include "elf32-target.h" |
6727 | | |
6728 | | #endif /* not SH_TARGET_ALREADY_DEFINED */ |