PR 5765
[binutils.git] / bfd / elf32-sh.c
blob1c7b2905ebc0daa09301d2de515f5667680453ca
1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008 Free Software Foundation, Inc.
4 Contributed by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "elf-vxworks.h"
29 #include "elf/sh.h"
30 #include "libiberty.h"
31 #include "../opcodes/sh-opc.h"
33 static bfd_reloc_status_type sh_elf_reloc
34 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
35 static bfd_reloc_status_type sh_elf_ignore_reloc
36 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
37 static bfd_boolean sh_elf_relax_delete_bytes
38 (bfd *, asection *, bfd_vma, int);
39 static bfd_boolean sh_elf_align_loads
40 (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_boolean *);
41 #ifndef SH64_ELF
42 static bfd_boolean sh_elf_swap_insns
43 (bfd *, asection *, void *, bfd_byte *, bfd_vma);
44 #endif
45 static int sh_elf_optimized_tls_reloc
46 (struct bfd_link_info *, int, int);
47 static bfd_vma dtpoff_base
48 (struct bfd_link_info *);
49 static bfd_vma tpoff
50 (struct bfd_link_info *, bfd_vma);
52 /* The name of the dynamic interpreter. This is put in the .interp
53 section. */
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
57 #define MINUS_ONE ((bfd_vma) 0 - 1)
59 #define SH_PARTIAL32 TRUE
60 #define SH_SRC_MASK32 0xffffffff
61 #define SH_ELF_RELOC sh_elf_reloc
62 static reloc_howto_type sh_elf_howto_table[] =
64 #include "elf32-sh-relocs.h"
67 #define SH_PARTIAL32 FALSE
68 #define SH_SRC_MASK32 0
69 #define SH_ELF_RELOC bfd_elf_generic_reloc
70 static reloc_howto_type sh_vxworks_howto_table[] =
72 #include "elf32-sh-relocs.h"
75 /* Return true if OUTPUT_BFD is a VxWorks object. */
77 static bfd_boolean
78 vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
80 #if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
81 extern const bfd_target bfd_elf32_shlvxworks_vec;
82 extern const bfd_target bfd_elf32_shvxworks_vec;
84 return (abfd->xvec == &bfd_elf32_shlvxworks_vec
85 || abfd->xvec == &bfd_elf32_shvxworks_vec);
86 #else
87 return FALSE;
88 #endif
91 /* Return the howto table for ABFD. */
93 static reloc_howto_type *
94 get_howto_table (bfd *abfd)
96 if (vxworks_object_p (abfd))
97 return sh_vxworks_howto_table;
98 return sh_elf_howto_table;
101 static bfd_reloc_status_type
102 sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd,
103 asection *input_section, bfd_byte *contents,
104 bfd_vma addr, asection *symbol_section,
105 bfd_vma start, bfd_vma end)
107 static bfd_vma last_addr;
108 static asection *last_symbol_section;
109 bfd_byte *start_ptr, *ptr, *last_ptr;
110 int diff, cum_diff;
111 bfd_signed_vma x;
112 int insn;
114 /* Sanity check the address. */
115 if (addr > bfd_get_section_limit (input_bfd, input_section))
116 return bfd_reloc_outofrange;
118 /* We require the start and end relocations to be processed consecutively -
119 although we allow then to be processed forwards or backwards. */
120 if (! last_addr)
122 last_addr = addr;
123 last_symbol_section = symbol_section;
124 return bfd_reloc_ok;
126 if (last_addr != addr)
127 abort ();
128 last_addr = 0;
130 if (! symbol_section || last_symbol_section != symbol_section || end < start)
131 return bfd_reloc_outofrange;
133 /* Get the symbol_section contents. */
134 if (symbol_section != input_section)
136 if (elf_section_data (symbol_section)->this_hdr.contents != NULL)
137 contents = elf_section_data (symbol_section)->this_hdr.contents;
138 else
140 if (!bfd_malloc_and_get_section (input_bfd, symbol_section,
141 &contents))
143 if (contents != NULL)
144 free (contents);
145 return bfd_reloc_outofrange;
149 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
150 start_ptr = contents + start;
151 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
153 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
154 ptr -= 2;
155 ptr += 2;
156 diff = (last_ptr - ptr) >> 1;
157 cum_diff += diff & 1;
158 cum_diff += diff;
160 /* Calculate the start / end values to load into rs / re minus four -
161 so that will cancel out the four we would otherwise have to add to
162 addr to get the value to subtract in order to get relative addressing. */
163 if (cum_diff >= 0)
165 start -= 4;
166 end = (ptr + cum_diff * 2) - contents;
168 else
170 bfd_vma start0 = start - 4;
172 while (start0 && IS_PPI (contents + start0))
173 start0 -= 2;
174 start0 = start - 2 - ((start - start0) & 2);
175 start = start0 - cum_diff - 2;
176 end = start0;
179 if (contents != NULL
180 && elf_section_data (symbol_section)->this_hdr.contents != contents)
181 free (contents);
183 insn = bfd_get_16 (input_bfd, contents + addr);
185 x = (insn & 0x200 ? end : start) - addr;
186 if (input_section != symbol_section)
187 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
188 - (input_section->output_section->vma
189 + input_section->output_offset));
190 x >>= 1;
191 if (x < -128 || x > 127)
192 return bfd_reloc_overflow;
194 x = (insn & ~0xff) | (x & 0xff);
195 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
197 return bfd_reloc_ok;
200 /* This function is used for normal relocs. This used to be like the COFF
201 function, and is almost certainly incorrect for other ELF targets. */
203 static bfd_reloc_status_type
204 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
205 void *data, asection *input_section, bfd *output_bfd,
206 char **error_message ATTRIBUTE_UNUSED)
208 unsigned long insn;
209 bfd_vma sym_value;
210 enum elf_sh_reloc_type r_type;
211 bfd_vma addr = reloc_entry->address;
212 bfd_byte *hit_data = addr + (bfd_byte *) data;
214 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
216 if (output_bfd != NULL)
218 /* Partial linking--do nothing. */
219 reloc_entry->address += input_section->output_offset;
220 return bfd_reloc_ok;
223 /* Almost all relocs have to do with relaxing. If any work must be
224 done for them, it has been done in sh_relax_section. */
225 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
226 return bfd_reloc_ok;
228 if (symbol_in != NULL
229 && bfd_is_und_section (symbol_in->section))
230 return bfd_reloc_undefined;
232 if (bfd_is_com_section (symbol_in->section))
233 sym_value = 0;
234 else
235 sym_value = (symbol_in->value +
236 symbol_in->section->output_section->vma +
237 symbol_in->section->output_offset);
239 switch (r_type)
241 case R_SH_DIR32:
242 insn = bfd_get_32 (abfd, hit_data);
243 insn += sym_value + reloc_entry->addend;
244 bfd_put_32 (abfd, (bfd_vma) insn, hit_data);
245 break;
246 case R_SH_IND12W:
247 insn = bfd_get_16 (abfd, hit_data);
248 sym_value += reloc_entry->addend;
249 sym_value -= (input_section->output_section->vma
250 + input_section->output_offset
251 + addr
252 + 4);
253 sym_value += (insn & 0xfff) << 1;
254 if (insn & 0x800)
255 sym_value -= 0x1000;
256 insn = (insn & 0xf000) | (sym_value & 0xfff);
257 bfd_put_16 (abfd, (bfd_vma) insn, hit_data);
258 if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000)
259 return bfd_reloc_overflow;
260 break;
261 default:
262 abort ();
263 break;
266 return bfd_reloc_ok;
269 /* This function is used for relocs which are only used for relaxing,
270 which the linker should otherwise ignore. */
272 static bfd_reloc_status_type
273 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
274 asymbol *symbol ATTRIBUTE_UNUSED,
275 void *data ATTRIBUTE_UNUSED, asection *input_section,
276 bfd *output_bfd,
277 char **error_message ATTRIBUTE_UNUSED)
279 if (output_bfd != NULL)
280 reloc_entry->address += input_section->output_offset;
281 return bfd_reloc_ok;
284 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
286 struct elf_reloc_map
288 bfd_reloc_code_real_type bfd_reloc_val;
289 unsigned char elf_reloc_val;
292 /* An array mapping BFD reloc codes to SH ELF relocs. */
294 static const struct elf_reloc_map sh_reloc_map[] =
296 { BFD_RELOC_NONE, R_SH_NONE },
297 { BFD_RELOC_32, R_SH_DIR32 },
298 { BFD_RELOC_16, R_SH_DIR16 },
299 { BFD_RELOC_8, R_SH_DIR8 },
300 { BFD_RELOC_CTOR, R_SH_DIR32 },
301 { BFD_RELOC_32_PCREL, R_SH_REL32 },
302 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
303 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
304 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
305 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
306 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
307 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
308 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
309 { BFD_RELOC_SH_USES, R_SH_USES },
310 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
311 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
312 { BFD_RELOC_SH_CODE, R_SH_CODE },
313 { BFD_RELOC_SH_DATA, R_SH_DATA },
314 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
315 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
316 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
317 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
318 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
319 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
320 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
321 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
322 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
323 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
324 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
325 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
326 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
327 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
328 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
329 { BFD_RELOC_SH_COPY, R_SH_COPY },
330 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
331 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
332 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
333 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
334 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
335 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
336 #ifdef INCLUDE_SHMEDIA
337 { BFD_RELOC_SH_GOT_LOW16, R_SH_GOT_LOW16 },
338 { BFD_RELOC_SH_GOT_MEDLOW16, R_SH_GOT_MEDLOW16 },
339 { BFD_RELOC_SH_GOT_MEDHI16, R_SH_GOT_MEDHI16 },
340 { BFD_RELOC_SH_GOT_HI16, R_SH_GOT_HI16 },
341 { BFD_RELOC_SH_GOTPLT_LOW16, R_SH_GOTPLT_LOW16 },
342 { BFD_RELOC_SH_GOTPLT_MEDLOW16, R_SH_GOTPLT_MEDLOW16 },
343 { BFD_RELOC_SH_GOTPLT_MEDHI16, R_SH_GOTPLT_MEDHI16 },
344 { BFD_RELOC_SH_GOTPLT_HI16, R_SH_GOTPLT_HI16 },
345 { BFD_RELOC_SH_PLT_LOW16, R_SH_PLT_LOW16 },
346 { BFD_RELOC_SH_PLT_MEDLOW16, R_SH_PLT_MEDLOW16 },
347 { BFD_RELOC_SH_PLT_MEDHI16, R_SH_PLT_MEDHI16 },
348 { BFD_RELOC_SH_PLT_HI16, R_SH_PLT_HI16 },
349 { BFD_RELOC_SH_GOTOFF_LOW16, R_SH_GOTOFF_LOW16 },
350 { BFD_RELOC_SH_GOTOFF_MEDLOW16, R_SH_GOTOFF_MEDLOW16 },
351 { BFD_RELOC_SH_GOTOFF_MEDHI16, R_SH_GOTOFF_MEDHI16 },
352 { BFD_RELOC_SH_GOTOFF_HI16, R_SH_GOTOFF_HI16 },
353 { BFD_RELOC_SH_GOTPC_LOW16, R_SH_GOTPC_LOW16 },
354 { BFD_RELOC_SH_GOTPC_MEDLOW16, R_SH_GOTPC_MEDLOW16 },
355 { BFD_RELOC_SH_GOTPC_MEDHI16, R_SH_GOTPC_MEDHI16 },
356 { BFD_RELOC_SH_GOTPC_HI16, R_SH_GOTPC_HI16 },
357 { BFD_RELOC_SH_COPY64, R_SH_COPY64 },
358 { BFD_RELOC_SH_GLOB_DAT64, R_SH_GLOB_DAT64 },
359 { BFD_RELOC_SH_JMP_SLOT64, R_SH_JMP_SLOT64 },
360 { BFD_RELOC_SH_RELATIVE64, R_SH_RELATIVE64 },
361 { BFD_RELOC_SH_GOT10BY4, R_SH_GOT10BY4 },
362 { BFD_RELOC_SH_GOT10BY8, R_SH_GOT10BY8 },
363 { BFD_RELOC_SH_GOTPLT10BY4, R_SH_GOTPLT10BY4 },
364 { BFD_RELOC_SH_GOTPLT10BY8, R_SH_GOTPLT10BY8 },
365 { BFD_RELOC_SH_PT_16, R_SH_PT_16 },
366 { BFD_RELOC_SH_SHMEDIA_CODE, R_SH_SHMEDIA_CODE },
367 { BFD_RELOC_SH_IMMU5, R_SH_DIR5U },
368 { BFD_RELOC_SH_IMMS6, R_SH_DIR6S },
369 { BFD_RELOC_SH_IMMU6, R_SH_DIR6U },
370 { BFD_RELOC_SH_IMMS10, R_SH_DIR10S },
371 { BFD_RELOC_SH_IMMS10BY2, R_SH_DIR10SW },
372 { BFD_RELOC_SH_IMMS10BY4, R_SH_DIR10SL },
373 { BFD_RELOC_SH_IMMS10BY8, R_SH_DIR10SQ },
374 { BFD_RELOC_SH_IMMS16, R_SH_IMMS16 },
375 { BFD_RELOC_SH_IMMU16, R_SH_IMMU16 },
376 { BFD_RELOC_SH_IMM_LOW16, R_SH_IMM_LOW16 },
377 { BFD_RELOC_SH_IMM_LOW16_PCREL, R_SH_IMM_LOW16_PCREL },
378 { BFD_RELOC_SH_IMM_MEDLOW16, R_SH_IMM_MEDLOW16 },
379 { BFD_RELOC_SH_IMM_MEDLOW16_PCREL, R_SH_IMM_MEDLOW16_PCREL },
380 { BFD_RELOC_SH_IMM_MEDHI16, R_SH_IMM_MEDHI16 },
381 { BFD_RELOC_SH_IMM_MEDHI16_PCREL, R_SH_IMM_MEDHI16_PCREL },
382 { BFD_RELOC_SH_IMM_HI16, R_SH_IMM_HI16 },
383 { BFD_RELOC_SH_IMM_HI16_PCREL, R_SH_IMM_HI16_PCREL },
384 { BFD_RELOC_64, R_SH_64 },
385 { BFD_RELOC_64_PCREL, R_SH_64_PCREL },
386 #endif /* not INCLUDE_SHMEDIA */
389 /* Given a BFD reloc code, return the howto structure for the
390 corresponding SH ELF reloc. */
392 static reloc_howto_type *
393 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
395 unsigned int i;
397 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
399 if (sh_reloc_map[i].bfd_reloc_val == code)
400 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
403 return NULL;
406 static reloc_howto_type *
407 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
409 unsigned int i;
411 if (vxworks_object_p (abfd))
413 for (i = 0;
414 i < (sizeof (sh_vxworks_howto_table)
415 / sizeof (sh_vxworks_howto_table[0]));
416 i++)
417 if (sh_vxworks_howto_table[i].name != NULL
418 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
419 return &sh_vxworks_howto_table[i];
421 else
423 for (i = 0;
424 i < (sizeof (sh_elf_howto_table)
425 / sizeof (sh_elf_howto_table[0]));
426 i++)
427 if (sh_elf_howto_table[i].name != NULL
428 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
429 return &sh_elf_howto_table[i];
432 return NULL;
435 /* Given an ELF reloc, fill in the howto field of a relent. */
437 static void
438 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
440 unsigned int r;
442 r = ELF32_R_TYPE (dst->r_info);
444 BFD_ASSERT (r < (unsigned int) R_SH_max);
445 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC);
446 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2);
447 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_3 || r > R_SH_LAST_INVALID_RELOC_3);
448 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_4 || r > R_SH_LAST_INVALID_RELOC_4);
449 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_5 || r > R_SH_LAST_INVALID_RELOC_5);
451 cache_ptr->howto = get_howto_table (abfd) + r;
454 /* This function handles relaxing for SH ELF. See the corresponding
455 function in coff-sh.c for a description of what this does. FIXME:
456 There is a lot of duplication here between this code and the COFF
457 specific code. The format of relocs and symbols is wound deeply
458 into this code, but it would still be better if the duplication
459 could be eliminated somehow. Note in particular that although both
460 functions use symbols like R_SH_CODE, those symbols have different
461 values; in coff-sh.c they come from include/coff/sh.h, whereas here
462 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
464 static bfd_boolean
465 sh_elf_relax_section (bfd *abfd, asection *sec,
466 struct bfd_link_info *link_info, bfd_boolean *again)
468 Elf_Internal_Shdr *symtab_hdr;
469 Elf_Internal_Rela *internal_relocs;
470 bfd_boolean have_code;
471 Elf_Internal_Rela *irel, *irelend;
472 bfd_byte *contents = NULL;
473 Elf_Internal_Sym *isymbuf = NULL;
475 *again = FALSE;
477 if (link_info->relocatable
478 || (sec->flags & SEC_RELOC) == 0
479 || sec->reloc_count == 0)
480 return TRUE;
482 #ifdef INCLUDE_SHMEDIA
483 if (elf_section_data (sec)->this_hdr.sh_flags
484 & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED))
486 return TRUE;
488 #endif
490 symtab_hdr = &elf_symtab_hdr (abfd);
492 internal_relocs = (_bfd_elf_link_read_relocs
493 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
494 link_info->keep_memory));
495 if (internal_relocs == NULL)
496 goto error_return;
498 have_code = FALSE;
500 irelend = internal_relocs + sec->reloc_count;
501 for (irel = internal_relocs; irel < irelend; irel++)
503 bfd_vma laddr, paddr, symval;
504 unsigned short insn;
505 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
506 bfd_signed_vma foff;
508 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
509 have_code = TRUE;
511 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
512 continue;
514 /* Get the section contents. */
515 if (contents == NULL)
517 if (elf_section_data (sec)->this_hdr.contents != NULL)
518 contents = elf_section_data (sec)->this_hdr.contents;
519 else
521 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
522 goto error_return;
526 /* The r_addend field of the R_SH_USES reloc will point us to
527 the register load. The 4 is because the r_addend field is
528 computed as though it were a jump offset, which are based
529 from 4 bytes after the jump instruction. */
530 laddr = irel->r_offset + 4 + irel->r_addend;
531 if (laddr >= sec->size)
533 (*_bfd_error_handler) (_("%B: 0x%lx: warning: bad R_SH_USES offset"),
534 abfd,
535 (unsigned long) irel->r_offset);
536 continue;
538 insn = bfd_get_16 (abfd, contents + laddr);
540 /* If the instruction is not mov.l NN,rN, we don't know what to
541 do. */
542 if ((insn & 0xf000) != 0xd000)
544 ((*_bfd_error_handler)
545 (_("%B: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x"),
546 abfd, (unsigned long) irel->r_offset, insn));
547 continue;
550 /* Get the address from which the register is being loaded. The
551 displacement in the mov.l instruction is quadrupled. It is a
552 displacement from four bytes after the movl instruction, but,
553 before adding in the PC address, two least significant bits
554 of the PC are cleared. We assume that the section is aligned
555 on a four byte boundary. */
556 paddr = insn & 0xff;
557 paddr *= 4;
558 paddr += (laddr + 4) &~ (bfd_vma) 3;
559 if (paddr >= sec->size)
561 ((*_bfd_error_handler)
562 (_("%B: 0x%lx: warning: bad R_SH_USES load offset"),
563 abfd, (unsigned long) irel->r_offset));
564 continue;
567 /* Get the reloc for the address from which the register is
568 being loaded. This reloc will tell us which function is
569 actually being called. */
570 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
571 if (irelfn->r_offset == paddr
572 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
573 break;
574 if (irelfn >= irelend)
576 ((*_bfd_error_handler)
577 (_("%B: 0x%lx: warning: could not find expected reloc"),
578 abfd, (unsigned long) paddr));
579 continue;
582 /* Read this BFD's symbols if we haven't done so already. */
583 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
585 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
586 if (isymbuf == NULL)
587 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
588 symtab_hdr->sh_info, 0,
589 NULL, NULL, NULL);
590 if (isymbuf == NULL)
591 goto error_return;
594 /* Get the value of the symbol referred to by the reloc. */
595 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
597 /* A local symbol. */
598 Elf_Internal_Sym *isym;
600 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
601 if (isym->st_shndx
602 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
604 ((*_bfd_error_handler)
605 (_("%B: 0x%lx: warning: symbol in unexpected section"),
606 abfd, (unsigned long) paddr));
607 continue;
610 symval = (isym->st_value
611 + sec->output_section->vma
612 + sec->output_offset);
614 else
616 unsigned long indx;
617 struct elf_link_hash_entry *h;
619 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
620 h = elf_sym_hashes (abfd)[indx];
621 BFD_ASSERT (h != NULL);
622 if (h->root.type != bfd_link_hash_defined
623 && h->root.type != bfd_link_hash_defweak)
625 /* This appears to be a reference to an undefined
626 symbol. Just ignore it--it will be caught by the
627 regular reloc processing. */
628 continue;
631 symval = (h->root.u.def.value
632 + h->root.u.def.section->output_section->vma
633 + h->root.u.def.section->output_offset);
636 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
637 symval += bfd_get_32 (abfd, contents + paddr);
638 else
639 symval += irelfn->r_addend;
641 /* See if this function call can be shortened. */
642 foff = (symval
643 - (irel->r_offset
644 + sec->output_section->vma
645 + sec->output_offset
646 + 4));
647 /* A branch to an address beyond ours might be increased by an
648 .align that doesn't move when bytes behind us are deleted.
649 So, we add some slop in this calculation to allow for
650 that. */
651 if (foff < -0x1000 || foff >= 0x1000 - 8)
653 /* After all that work, we can't shorten this function call. */
654 continue;
657 /* Shorten the function call. */
659 /* For simplicity of coding, we are going to modify the section
660 contents, the section relocs, and the BFD symbol table. We
661 must tell the rest of the code not to free up this
662 information. It would be possible to instead create a table
663 of changes which have to be made, as is done in coff-mips.c;
664 that would be more work, but would require less memory when
665 the linker is run. */
667 elf_section_data (sec)->relocs = internal_relocs;
668 elf_section_data (sec)->this_hdr.contents = contents;
669 symtab_hdr->contents = (unsigned char *) isymbuf;
671 /* Replace the jsr with a bsr. */
673 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
674 replace the jsr with a bsr. */
675 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
676 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
677 here, but that only checks if the symbol is an external symbol,
678 not if the symbol is in a different section. Besides, we need
679 a consistent meaning for the relocation, so we just assume here that
680 the value of the symbol is not available. */
682 /* We can't fully resolve this yet, because the external
683 symbol value may be changed by future relaxing. We let
684 the final link phase handle it. */
685 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
687 irel->r_addend = -4;
689 /* When we calculated the symbol "value" we had an offset in the
690 DIR32's word in memory (we read and add it above). However,
691 the jsr we create does NOT have this offset encoded, so we
692 have to add it to the addend to preserve it. */
693 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
695 /* See if there is another R_SH_USES reloc referring to the same
696 register load. */
697 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
698 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
699 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
700 break;
701 if (irelscan < irelend)
703 /* Some other function call depends upon this register load,
704 and we have not yet converted that function call.
705 Indeed, we may never be able to convert it. There is
706 nothing else we can do at this point. */
707 continue;
710 /* Look for a R_SH_COUNT reloc on the location where the
711 function address is stored. Do this before deleting any
712 bytes, to avoid confusion about the address. */
713 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
714 if (irelcount->r_offset == paddr
715 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
716 break;
718 /* Delete the register load. */
719 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
720 goto error_return;
722 /* That will change things, so, just in case it permits some
723 other function call to come within range, we should relax
724 again. Note that this is not required, and it may be slow. */
725 *again = TRUE;
727 /* Now check whether we got a COUNT reloc. */
728 if (irelcount >= irelend)
730 ((*_bfd_error_handler)
731 (_("%B: 0x%lx: warning: could not find expected COUNT reloc"),
732 abfd, (unsigned long) paddr));
733 continue;
736 /* The number of uses is stored in the r_addend field. We've
737 just deleted one. */
738 if (irelcount->r_addend == 0)
740 ((*_bfd_error_handler) (_("%B: 0x%lx: warning: bad count"),
741 abfd,
742 (unsigned long) paddr));
743 continue;
746 --irelcount->r_addend;
748 /* If there are no more uses, we can delete the address. Reload
749 the address from irelfn, in case it was changed by the
750 previous call to sh_elf_relax_delete_bytes. */
751 if (irelcount->r_addend == 0)
753 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
754 goto error_return;
757 /* We've done all we can with that function call. */
760 /* Look for load and store instructions that we can align on four
761 byte boundaries. */
762 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
763 && have_code)
765 bfd_boolean swapped;
767 /* Get the section contents. */
768 if (contents == NULL)
770 if (elf_section_data (sec)->this_hdr.contents != NULL)
771 contents = elf_section_data (sec)->this_hdr.contents;
772 else
774 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
775 goto error_return;
779 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
780 &swapped))
781 goto error_return;
783 if (swapped)
785 elf_section_data (sec)->relocs = internal_relocs;
786 elf_section_data (sec)->this_hdr.contents = contents;
787 symtab_hdr->contents = (unsigned char *) isymbuf;
791 if (isymbuf != NULL
792 && symtab_hdr->contents != (unsigned char *) isymbuf)
794 if (! link_info->keep_memory)
795 free (isymbuf);
796 else
798 /* Cache the symbols for elf_link_input_bfd. */
799 symtab_hdr->contents = (unsigned char *) isymbuf;
803 if (contents != NULL
804 && elf_section_data (sec)->this_hdr.contents != contents)
806 if (! link_info->keep_memory)
807 free (contents);
808 else
810 /* Cache the section contents for elf_link_input_bfd. */
811 elf_section_data (sec)->this_hdr.contents = contents;
815 if (internal_relocs != NULL
816 && elf_section_data (sec)->relocs != internal_relocs)
817 free (internal_relocs);
819 return TRUE;
821 error_return:
822 if (isymbuf != NULL
823 && symtab_hdr->contents != (unsigned char *) isymbuf)
824 free (isymbuf);
825 if (contents != NULL
826 && elf_section_data (sec)->this_hdr.contents != contents)
827 free (contents);
828 if (internal_relocs != NULL
829 && elf_section_data (sec)->relocs != internal_relocs)
830 free (internal_relocs);
832 return FALSE;
835 /* Delete some bytes from a section while relaxing. FIXME: There is a
836 lot of duplication between this function and sh_relax_delete_bytes
837 in coff-sh.c. */
839 static bfd_boolean
840 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
841 int count)
843 Elf_Internal_Shdr *symtab_hdr;
844 unsigned int sec_shndx;
845 bfd_byte *contents;
846 Elf_Internal_Rela *irel, *irelend;
847 Elf_Internal_Rela *irelalign;
848 bfd_vma toaddr;
849 Elf_Internal_Sym *isymbuf, *isym, *isymend;
850 struct elf_link_hash_entry **sym_hashes;
851 struct elf_link_hash_entry **end_hashes;
852 unsigned int symcount;
853 asection *o;
855 symtab_hdr = &elf_symtab_hdr (abfd);
856 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
858 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
860 contents = elf_section_data (sec)->this_hdr.contents;
862 /* The deletion must stop at the next ALIGN reloc for an aligment
863 power larger than the number of bytes we are deleting. */
865 irelalign = NULL;
866 toaddr = sec->size;
868 irel = elf_section_data (sec)->relocs;
869 irelend = irel + sec->reloc_count;
870 for (; irel < irelend; irel++)
872 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
873 && irel->r_offset > addr
874 && count < (1 << irel->r_addend))
876 irelalign = irel;
877 toaddr = irel->r_offset;
878 break;
882 /* Actually delete the bytes. */
883 memmove (contents + addr, contents + addr + count,
884 (size_t) (toaddr - addr - count));
885 if (irelalign == NULL)
886 sec->size -= count;
887 else
889 int i;
891 #define NOP_OPCODE (0x0009)
893 BFD_ASSERT ((count & 1) == 0);
894 for (i = 0; i < count; i += 2)
895 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
898 /* Adjust all the relocs. */
899 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
901 bfd_vma nraddr, stop;
902 bfd_vma start = 0;
903 int insn = 0;
904 int off, adjust, oinsn;
905 bfd_signed_vma voff = 0;
906 bfd_boolean overflow;
908 /* Get the new reloc address. */
909 nraddr = irel->r_offset;
910 if ((irel->r_offset > addr
911 && irel->r_offset < toaddr)
912 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
913 && irel->r_offset == toaddr))
914 nraddr -= count;
916 /* See if this reloc was for the bytes we have deleted, in which
917 case we no longer care about it. Don't delete relocs which
918 represent addresses, though. */
919 if (irel->r_offset >= addr
920 && irel->r_offset < addr + count
921 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
922 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
923 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
924 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
925 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
926 (int) R_SH_NONE);
928 /* If this is a PC relative reloc, see if the range it covers
929 includes the bytes we have deleted. */
930 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
932 default:
933 break;
935 case R_SH_DIR8WPN:
936 case R_SH_IND12W:
937 case R_SH_DIR8WPZ:
938 case R_SH_DIR8WPL:
939 start = irel->r_offset;
940 insn = bfd_get_16 (abfd, contents + nraddr);
941 break;
944 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
946 default:
947 start = stop = addr;
948 break;
950 case R_SH_DIR32:
951 /* If this reloc is against a symbol defined in this
952 section, and the symbol will not be adjusted below, we
953 must check the addend to see it will put the value in
954 range to be adjusted, and hence must be changed. */
955 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
957 isym = isymbuf + ELF32_R_SYM (irel->r_info);
958 if (isym->st_shndx == sec_shndx
959 && (isym->st_value <= addr
960 || isym->st_value >= toaddr))
962 bfd_vma val;
964 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
966 val = bfd_get_32 (abfd, contents + nraddr);
967 val += isym->st_value;
968 if (val > addr && val < toaddr)
969 bfd_put_32 (abfd, val - count, contents + nraddr);
971 else
973 val = isym->st_value + irel->r_addend;
974 if (val > addr && val < toaddr)
975 irel->r_addend -= count;
979 start = stop = addr;
980 break;
982 case R_SH_DIR8WPN:
983 off = insn & 0xff;
984 if (off & 0x80)
985 off -= 0x100;
986 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
987 break;
989 case R_SH_IND12W:
990 off = insn & 0xfff;
991 if (! off)
993 /* This has been made by previous relaxation. Since the
994 relocation will be against an external symbol, the
995 final relocation will just do the right thing. */
996 start = stop = addr;
998 else
1000 if (off & 0x800)
1001 off -= 0x1000;
1002 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
1004 /* The addend will be against the section symbol, thus
1005 for adjusting the addend, the relevant start is the
1006 start of the section.
1007 N.B. If we want to abandon in-place changes here and
1008 test directly using symbol + addend, we have to take into
1009 account that the addend has already been adjusted by -4. */
1010 if (stop > addr && stop < toaddr)
1011 irel->r_addend -= count;
1013 break;
1015 case R_SH_DIR8WPZ:
1016 off = insn & 0xff;
1017 stop = start + 4 + off * 2;
1018 break;
1020 case R_SH_DIR8WPL:
1021 off = insn & 0xff;
1022 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1023 break;
1025 case R_SH_SWITCH8:
1026 case R_SH_SWITCH16:
1027 case R_SH_SWITCH32:
1028 /* These relocs types represent
1029 .word L2-L1
1030 The r_addend field holds the difference between the reloc
1031 address and L1. That is the start of the reloc, and
1032 adding in the contents gives us the top. We must adjust
1033 both the r_offset field and the section contents.
1034 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1035 and the elf bfd r_offset is called r_vaddr. */
1037 stop = irel->r_offset;
1038 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1040 if (start > addr
1041 && start < toaddr
1042 && (stop <= addr || stop >= toaddr))
1043 irel->r_addend += count;
1044 else if (stop > addr
1045 && stop < toaddr
1046 && (start <= addr || start >= toaddr))
1047 irel->r_addend -= count;
1049 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1050 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1051 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1052 voff = bfd_get_8 (abfd, contents + nraddr);
1053 else
1054 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1055 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1057 break;
1059 case R_SH_USES:
1060 start = irel->r_offset;
1061 stop = (bfd_vma) ((bfd_signed_vma) start
1062 + (long) irel->r_addend
1063 + 4);
1064 break;
1067 if (start > addr
1068 && start < toaddr
1069 && (stop <= addr || stop >= toaddr))
1070 adjust = count;
1071 else if (stop > addr
1072 && stop < toaddr
1073 && (start <= addr || start >= toaddr))
1074 adjust = - count;
1075 else
1076 adjust = 0;
1078 if (adjust != 0)
1080 oinsn = insn;
1081 overflow = FALSE;
1082 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1084 default:
1085 abort ();
1086 break;
1088 case R_SH_DIR8WPN:
1089 case R_SH_DIR8WPZ:
1090 insn += adjust / 2;
1091 if ((oinsn & 0xff00) != (insn & 0xff00))
1092 overflow = TRUE;
1093 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1094 break;
1096 case R_SH_IND12W:
1097 insn += adjust / 2;
1098 if ((oinsn & 0xf000) != (insn & 0xf000))
1099 overflow = TRUE;
1100 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1101 break;
1103 case R_SH_DIR8WPL:
1104 BFD_ASSERT (adjust == count || count >= 4);
1105 if (count >= 4)
1106 insn += adjust / 4;
1107 else
1109 if ((irel->r_offset & 3) == 0)
1110 ++insn;
1112 if ((oinsn & 0xff00) != (insn & 0xff00))
1113 overflow = TRUE;
1114 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1115 break;
1117 case R_SH_SWITCH8:
1118 voff += adjust;
1119 if (voff < 0 || voff >= 0xff)
1120 overflow = TRUE;
1121 bfd_put_8 (abfd, voff, contents + nraddr);
1122 break;
1124 case R_SH_SWITCH16:
1125 voff += adjust;
1126 if (voff < - 0x8000 || voff >= 0x8000)
1127 overflow = TRUE;
1128 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1129 break;
1131 case R_SH_SWITCH32:
1132 voff += adjust;
1133 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1134 break;
1136 case R_SH_USES:
1137 irel->r_addend += adjust;
1138 break;
1141 if (overflow)
1143 ((*_bfd_error_handler)
1144 (_("%B: 0x%lx: fatal: reloc overflow while relaxing"),
1145 abfd, (unsigned long) irel->r_offset));
1146 bfd_set_error (bfd_error_bad_value);
1147 return FALSE;
1151 irel->r_offset = nraddr;
1154 /* Look through all the other sections. If there contain any IMM32
1155 relocs against internal symbols which we are not going to adjust
1156 below, we may need to adjust the addends. */
1157 for (o = abfd->sections; o != NULL; o = o->next)
1159 Elf_Internal_Rela *internal_relocs;
1160 Elf_Internal_Rela *irelscan, *irelscanend;
1161 bfd_byte *ocontents;
1163 if (o == sec
1164 || (o->flags & SEC_RELOC) == 0
1165 || o->reloc_count == 0)
1166 continue;
1168 /* We always cache the relocs. Perhaps, if info->keep_memory is
1169 FALSE, we should free them, if we are permitted to, when we
1170 leave sh_coff_relax_section. */
1171 internal_relocs = (_bfd_elf_link_read_relocs
1172 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE));
1173 if (internal_relocs == NULL)
1174 return FALSE;
1176 ocontents = NULL;
1177 irelscanend = internal_relocs + o->reloc_count;
1178 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1180 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1181 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1183 bfd_vma start, stop;
1184 bfd_signed_vma voff;
1186 if (ocontents == NULL)
1188 if (elf_section_data (o)->this_hdr.contents != NULL)
1189 ocontents = elf_section_data (o)->this_hdr.contents;
1190 else
1192 /* We always cache the section contents.
1193 Perhaps, if info->keep_memory is FALSE, we
1194 should free them, if we are permitted to,
1195 when we leave sh_coff_relax_section. */
1196 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1198 if (ocontents != NULL)
1199 free (ocontents);
1200 return FALSE;
1203 elf_section_data (o)->this_hdr.contents = ocontents;
1207 stop = irelscan->r_offset;
1208 start
1209 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1211 /* STOP is in a different section, so it won't change. */
1212 if (start > addr && start < toaddr)
1213 irelscan->r_addend += count;
1215 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1216 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1218 if (start > addr
1219 && start < toaddr
1220 && (stop <= addr || stop >= toaddr))
1221 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1222 ocontents + irelscan->r_offset);
1223 else if (stop > addr
1224 && stop < toaddr
1225 && (start <= addr || start >= toaddr))
1226 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1227 ocontents + irelscan->r_offset);
1230 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1231 continue;
1233 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1234 continue;
1237 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1238 if (isym->st_shndx == sec_shndx
1239 && (isym->st_value <= addr
1240 || isym->st_value >= toaddr))
1242 bfd_vma val;
1244 if (ocontents == NULL)
1246 if (elf_section_data (o)->this_hdr.contents != NULL)
1247 ocontents = elf_section_data (o)->this_hdr.contents;
1248 else
1250 /* We always cache the section contents.
1251 Perhaps, if info->keep_memory is FALSE, we
1252 should free them, if we are permitted to,
1253 when we leave sh_coff_relax_section. */
1254 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1256 if (ocontents != NULL)
1257 free (ocontents);
1258 return FALSE;
1261 elf_section_data (o)->this_hdr.contents = ocontents;
1265 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1266 val += isym->st_value;
1267 if (val > addr && val < toaddr)
1268 bfd_put_32 (abfd, val - count,
1269 ocontents + irelscan->r_offset);
1274 /* Adjust the local symbols defined in this section. */
1275 isymend = isymbuf + symtab_hdr->sh_info;
1276 for (isym = isymbuf; isym < isymend; isym++)
1278 if (isym->st_shndx == sec_shndx
1279 && isym->st_value > addr
1280 && isym->st_value < toaddr)
1281 isym->st_value -= count;
1284 /* Now adjust the global symbols defined in this section. */
1285 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1286 - symtab_hdr->sh_info);
1287 sym_hashes = elf_sym_hashes (abfd);
1288 end_hashes = sym_hashes + symcount;
1289 for (; sym_hashes < end_hashes; sym_hashes++)
1291 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1292 if ((sym_hash->root.type == bfd_link_hash_defined
1293 || sym_hash->root.type == bfd_link_hash_defweak)
1294 && sym_hash->root.u.def.section == sec
1295 && sym_hash->root.u.def.value > addr
1296 && sym_hash->root.u.def.value < toaddr)
1298 sym_hash->root.u.def.value -= count;
1302 /* See if we can move the ALIGN reloc forward. We have adjusted
1303 r_offset for it already. */
1304 if (irelalign != NULL)
1306 bfd_vma alignto, alignaddr;
1308 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1309 alignaddr = BFD_ALIGN (irelalign->r_offset,
1310 1 << irelalign->r_addend);
1311 if (alignto != alignaddr)
1313 /* Tail recursion. */
1314 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1315 (int) (alignto - alignaddr));
1319 return TRUE;
1322 /* Look for loads and stores which we can align to four byte
1323 boundaries. This is like sh_align_loads in coff-sh.c. */
1325 static bfd_boolean
1326 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1327 Elf_Internal_Rela *internal_relocs,
1328 bfd_byte *contents ATTRIBUTE_UNUSED,
1329 bfd_boolean *pswapped)
1331 Elf_Internal_Rela *irel, *irelend;
1332 bfd_vma *labels = NULL;
1333 bfd_vma *label, *label_end;
1334 bfd_size_type amt;
1336 *pswapped = FALSE;
1338 irelend = internal_relocs + sec->reloc_count;
1340 /* Get all the addresses with labels on them. */
1341 amt = sec->reloc_count;
1342 amt *= sizeof (bfd_vma);
1343 labels = (bfd_vma *) bfd_malloc (amt);
1344 if (labels == NULL)
1345 goto error_return;
1346 label_end = labels;
1347 for (irel = internal_relocs; irel < irelend; irel++)
1349 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1351 *label_end = irel->r_offset;
1352 ++label_end;
1356 /* Note that the assembler currently always outputs relocs in
1357 address order. If that ever changes, this code will need to sort
1358 the label values and the relocs. */
1360 label = labels;
1362 for (irel = internal_relocs; irel < irelend; irel++)
1364 bfd_vma start, stop;
1366 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1367 continue;
1369 start = irel->r_offset;
1371 for (irel++; irel < irelend; irel++)
1372 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1373 break;
1374 if (irel < irelend)
1375 stop = irel->r_offset;
1376 else
1377 stop = sec->size;
1379 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1380 internal_relocs, &label,
1381 label_end, start, stop, pswapped))
1382 goto error_return;
1385 free (labels);
1387 return TRUE;
1389 error_return:
1390 if (labels != NULL)
1391 free (labels);
1392 return FALSE;
1395 #ifndef SH64_ELF
1396 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1398 static bfd_boolean
1399 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1400 bfd_byte *contents, bfd_vma addr)
1402 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1403 unsigned short i1, i2;
1404 Elf_Internal_Rela *irel, *irelend;
1406 /* Swap the instructions themselves. */
1407 i1 = bfd_get_16 (abfd, contents + addr);
1408 i2 = bfd_get_16 (abfd, contents + addr + 2);
1409 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1410 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1412 /* Adjust all reloc addresses. */
1413 irelend = internal_relocs + sec->reloc_count;
1414 for (irel = internal_relocs; irel < irelend; irel++)
1416 enum elf_sh_reloc_type type;
1417 int add;
1419 /* There are a few special types of relocs that we don't want to
1420 adjust. These relocs do not apply to the instruction itself,
1421 but are only associated with the address. */
1422 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1423 if (type == R_SH_ALIGN
1424 || type == R_SH_CODE
1425 || type == R_SH_DATA
1426 || type == R_SH_LABEL)
1427 continue;
1429 /* If an R_SH_USES reloc points to one of the addresses being
1430 swapped, we must adjust it. It would be incorrect to do this
1431 for a jump, though, since we want to execute both
1432 instructions after the jump. (We have avoided swapping
1433 around a label, so the jump will not wind up executing an
1434 instruction it shouldn't). */
1435 if (type == R_SH_USES)
1437 bfd_vma off;
1439 off = irel->r_offset + 4 + irel->r_addend;
1440 if (off == addr)
1441 irel->r_offset += 2;
1442 else if (off == addr + 2)
1443 irel->r_offset -= 2;
1446 if (irel->r_offset == addr)
1448 irel->r_offset += 2;
1449 add = -2;
1451 else if (irel->r_offset == addr + 2)
1453 irel->r_offset -= 2;
1454 add = 2;
1456 else
1457 add = 0;
1459 if (add != 0)
1461 bfd_byte *loc;
1462 unsigned short insn, oinsn;
1463 bfd_boolean overflow;
1465 loc = contents + irel->r_offset;
1466 overflow = FALSE;
1467 switch (type)
1469 default:
1470 break;
1472 case R_SH_DIR8WPN:
1473 case R_SH_DIR8WPZ:
1474 insn = bfd_get_16 (abfd, loc);
1475 oinsn = insn;
1476 insn += add / 2;
1477 if ((oinsn & 0xff00) != (insn & 0xff00))
1478 overflow = TRUE;
1479 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1480 break;
1482 case R_SH_IND12W:
1483 insn = bfd_get_16 (abfd, loc);
1484 oinsn = insn;
1485 insn += add / 2;
1486 if ((oinsn & 0xf000) != (insn & 0xf000))
1487 overflow = TRUE;
1488 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1489 break;
1491 case R_SH_DIR8WPL:
1492 /* This reloc ignores the least significant 3 bits of
1493 the program counter before adding in the offset.
1494 This means that if ADDR is at an even address, the
1495 swap will not affect the offset. If ADDR is an at an
1496 odd address, then the instruction will be crossing a
1497 four byte boundary, and must be adjusted. */
1498 if ((addr & 3) != 0)
1500 insn = bfd_get_16 (abfd, loc);
1501 oinsn = insn;
1502 insn += add / 2;
1503 if ((oinsn & 0xff00) != (insn & 0xff00))
1504 overflow = TRUE;
1505 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1508 break;
1511 if (overflow)
1513 ((*_bfd_error_handler)
1514 (_("%B: 0x%lx: fatal: reloc overflow while relaxing"),
1515 abfd, (unsigned long) irel->r_offset));
1516 bfd_set_error (bfd_error_bad_value);
1517 return FALSE;
1522 return TRUE;
1524 #endif /* defined SH64_ELF */
1526 /* Describes one of the various PLT styles. */
1528 struct elf_sh_plt_info
1530 /* The template for the first PLT entry, or NULL if there is no special
1531 first entry. */
1532 const bfd_byte *plt0_entry;
1534 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1535 bfd_vma plt0_entry_size;
1537 /* Index I is the offset into PLT0_ENTRY of a pointer to
1538 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1539 if there is no such pointer. */
1540 bfd_vma plt0_got_fields[3];
1542 /* The template for a symbol's PLT entry. */
1543 const bfd_byte *symbol_entry;
1545 /* The size of SYMBOL_ENTRY in bytes. */
1546 bfd_vma symbol_entry_size;
1548 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1549 on all targets. The comments by each member indicate the value
1550 that the field must hold. */
1551 struct {
1552 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1553 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1554 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1555 } symbol_fields;
1557 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1558 bfd_vma symbol_resolve_offset;
1561 #ifdef INCLUDE_SHMEDIA
1563 /* The size in bytes of an entry in the procedure linkage table. */
1565 #define ELF_PLT_ENTRY_SIZE 64
1567 /* First entry in an absolute procedure linkage table look like this. */
1569 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1571 0xcc, 0x00, 0x01, 0x10, /* movi .got.plt >> 16, r17 */
1572 0xc8, 0x00, 0x01, 0x10, /* shori .got.plt & 65535, r17 */
1573 0x89, 0x10, 0x09, 0x90, /* ld.l r17, 8, r25 */
1574 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1575 0x89, 0x10, 0x05, 0x10, /* ld.l r17, 4, r17 */
1576 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1577 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1578 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1579 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1580 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1581 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1582 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1583 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1584 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1585 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1586 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1589 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1591 0x10, 0x01, 0x00, 0xcc, /* movi .got.plt >> 16, r17 */
1592 0x10, 0x01, 0x00, 0xc8, /* shori .got.plt & 65535, r17 */
1593 0x90, 0x09, 0x10, 0x89, /* ld.l r17, 8, r25 */
1594 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1595 0x10, 0x05, 0x10, 0x89, /* ld.l r17, 4, r17 */
1596 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1597 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1598 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1599 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1600 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1601 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1602 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1603 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1604 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1605 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1606 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1609 /* Sebsequent entries in an absolute procedure linkage table look like
1610 this. */
1612 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1614 0xcc, 0x00, 0x01, 0x90, /* movi nameN-in-GOT >> 16, r25 */
1615 0xc8, 0x00, 0x01, 0x90, /* shori nameN-in-GOT & 65535, r25 */
1616 0x89, 0x90, 0x01, 0x90, /* ld.l r25, 0, r25 */
1617 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1618 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1619 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1620 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1621 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1622 0xcc, 0x00, 0x01, 0x90, /* movi .PLT0 >> 16, r25 */
1623 0xc8, 0x00, 0x01, 0x90, /* shori .PLT0 & 65535, r25 */
1624 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1625 0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */
1626 0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
1627 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1628 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1629 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1632 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1634 0x90, 0x01, 0x00, 0xcc, /* movi nameN-in-GOT >> 16, r25 */
1635 0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */
1636 0x90, 0x01, 0x90, 0x89, /* ld.l r25, 0, r25 */
1637 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1638 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1639 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1640 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1641 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1642 0x90, 0x01, 0x00, 0xcc, /* movi .PLT0 >> 16, r25 */
1643 0x90, 0x01, 0x00, 0xc8, /* shori .PLT0 & 65535, r25 */
1644 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1645 0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */
1646 0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
1647 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1648 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1649 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1652 /* Entries in a PIC procedure linkage table look like this. */
1654 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1656 0xcc, 0x00, 0x01, 0x90, /* movi nameN@GOT >> 16, r25 */
1657 0xc8, 0x00, 0x01, 0x90, /* shori nameN@GOT & 65535, r25 */
1658 0x40, 0xc2, 0x65, 0x90, /* ldx.l r12, r25, r25 */
1659 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1660 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1661 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1662 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1663 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1664 0xce, 0x00, 0x01, 0x10, /* movi -GOT_BIAS, r17 */
1665 0x00, 0xc8, 0x45, 0x10, /* add.l r12, r17, r17 */
1666 0x89, 0x10, 0x09, 0x90, /* ld.l r17, 8, r25 */
1667 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1668 0x89, 0x10, 0x05, 0x10, /* ld.l r17, 4, r17 */
1669 0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */
1670 0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
1671 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1674 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1676 0x90, 0x01, 0x00, 0xcc, /* movi nameN@GOT >> 16, r25 */
1677 0x90, 0x01, 0x00, 0xc8, /* shori nameN@GOT & 65535, r25 */
1678 0x90, 0x65, 0xc2, 0x40, /* ldx.l r12, r25, r25 */
1679 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1680 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1681 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1682 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1683 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1684 0x10, 0x01, 0x00, 0xce, /* movi -GOT_BIAS, r17 */
1685 0x10, 0x45, 0xc8, 0x00, /* add.l r12, r17, r17 */
1686 0x90, 0x09, 0x10, 0x89, /* ld.l r17, 8, r25 */
1687 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1688 0x10, 0x05, 0x10, 0x89, /* ld.l r17, 4, r17 */
1689 0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */
1690 0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
1691 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1694 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1697 /* Big-endian non-PIC. */
1698 elf_sh_plt0_entry_be,
1699 ELF_PLT_ENTRY_SIZE,
1700 { 0, MINUS_ONE, MINUS_ONE },
1701 elf_sh_plt_entry_be,
1702 ELF_PLT_ENTRY_SIZE,
1703 { 0, 32, 48 },
1704 33 /* includes ISA encoding */
1707 /* Little-endian non-PIC. */
1708 elf_sh_plt0_entry_le,
1709 ELF_PLT_ENTRY_SIZE,
1710 { 0, MINUS_ONE, MINUS_ONE },
1711 elf_sh_plt_entry_le,
1712 ELF_PLT_ENTRY_SIZE,
1713 { 0, 32, 48 },
1714 33 /* includes ISA encoding */
1719 /* Big-endian PIC. */
1720 elf_sh_plt0_entry_be,
1721 ELF_PLT_ENTRY_SIZE,
1722 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1723 elf_sh_pic_plt_entry_be,
1724 ELF_PLT_ENTRY_SIZE,
1725 { 0, MINUS_ONE, 52 },
1726 33 /* includes ISA encoding */
1729 /* Little-endian PIC. */
1730 elf_sh_plt0_entry_le,
1731 ELF_PLT_ENTRY_SIZE,
1732 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1733 elf_sh_pic_plt_entry_le,
1734 ELF_PLT_ENTRY_SIZE,
1735 { 0, MINUS_ONE, 52 },
1736 33 /* includes ISA encoding */
1741 /* Return offset of the linker in PLT0 entry. */
1742 #define elf_sh_plt0_gotplt_offset(info) 0
1744 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
1745 VALUE is the field's value and CODE_P is true if VALUE refers to code,
1746 not data.
1748 On SH64, each 32-bit field is loaded by a movi/shori pair. */
1750 inline static void
1751 install_plt_field (bfd *output_bfd, bfd_boolean code_p,
1752 unsigned long value, bfd_byte *addr)
1754 value |= code_p;
1755 bfd_put_32 (output_bfd,
1756 bfd_get_32 (output_bfd, addr)
1757 | ((value >> 6) & 0x3fffc00),
1758 addr);
1759 bfd_put_32 (output_bfd,
1760 bfd_get_32 (output_bfd, addr + 4)
1761 | ((value << 10) & 0x3fffc00),
1762 addr + 4);
1765 /* Return the type of PLT associated with ABFD. PIC_P is true if
1766 the object is position-independent. */
1768 static const struct elf_sh_plt_info *
1769 get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
1771 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
1773 #else
1774 /* The size in bytes of an entry in the procedure linkage table. */
1776 #define ELF_PLT_ENTRY_SIZE 28
1778 /* First entry in an absolute procedure linkage table look like this. */
1780 /* Note - this code has been "optimised" not to use r2. r2 is used by
1781 GCC to return the address of large structures, so it should not be
1782 corrupted here. This does mean however, that this PLT does not conform
1783 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1784 and r2 contains the GOT id. This version stores the GOT id in r0 and
1785 ignores the type. Loaders can easily detect this difference however,
1786 since the type will always be 0 or 8, and the GOT ids will always be
1787 greater than or equal to 12. */
1788 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1790 0xd0, 0x05, /* mov.l 2f,r0 */
1791 0x60, 0x02, /* mov.l @r0,r0 */
1792 0x2f, 0x06, /* mov.l r0,@-r15 */
1793 0xd0, 0x03, /* mov.l 1f,r0 */
1794 0x60, 0x02, /* mov.l @r0,r0 */
1795 0x40, 0x2b, /* jmp @r0 */
1796 0x60, 0xf6, /* mov.l @r15+,r0 */
1797 0x00, 0x09, /* nop */
1798 0x00, 0x09, /* nop */
1799 0x00, 0x09, /* nop */
1800 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1801 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1804 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1806 0x05, 0xd0, /* mov.l 2f,r0 */
1807 0x02, 0x60, /* mov.l @r0,r0 */
1808 0x06, 0x2f, /* mov.l r0,@-r15 */
1809 0x03, 0xd0, /* mov.l 1f,r0 */
1810 0x02, 0x60, /* mov.l @r0,r0 */
1811 0x2b, 0x40, /* jmp @r0 */
1812 0xf6, 0x60, /* mov.l @r15+,r0 */
1813 0x09, 0x00, /* nop */
1814 0x09, 0x00, /* nop */
1815 0x09, 0x00, /* nop */
1816 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1817 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1820 /* Sebsequent entries in an absolute procedure linkage table look like
1821 this. */
1823 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1825 0xd0, 0x04, /* mov.l 1f,r0 */
1826 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1827 0xd1, 0x02, /* mov.l 0f,r1 */
1828 0x40, 0x2b, /* jmp @r0 */
1829 0x60, 0x13, /* mov r1,r0 */
1830 0xd1, 0x03, /* mov.l 2f,r1 */
1831 0x40, 0x2b, /* jmp @r0 */
1832 0x00, 0x09, /* nop */
1833 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1834 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1835 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1838 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1840 0x04, 0xd0, /* mov.l 1f,r0 */
1841 0x02, 0x60, /* mov.l @r0,r0 */
1842 0x02, 0xd1, /* mov.l 0f,r1 */
1843 0x2b, 0x40, /* jmp @r0 */
1844 0x13, 0x60, /* mov r1,r0 */
1845 0x03, 0xd1, /* mov.l 2f,r1 */
1846 0x2b, 0x40, /* jmp @r0 */
1847 0x09, 0x00, /* nop */
1848 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1849 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1850 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1853 /* Entries in a PIC procedure linkage table look like this. */
1855 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1857 0xd0, 0x04, /* mov.l 1f,r0 */
1858 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1859 0x40, 0x2b, /* jmp @r0 */
1860 0x00, 0x09, /* nop */
1861 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1862 0xd1, 0x03, /* mov.l 2f,r1 */
1863 0x40, 0x2b, /* jmp @r0 */
1864 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1865 0x00, 0x09, /* nop */
1866 0x00, 0x09, /* nop */
1867 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1868 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1871 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1873 0x04, 0xd0, /* mov.l 1f,r0 */
1874 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1875 0x2b, 0x40, /* jmp @r0 */
1876 0x09, 0x00, /* nop */
1877 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1878 0x03, 0xd1, /* mov.l 2f,r1 */
1879 0x2b, 0x40, /* jmp @r0 */
1880 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1881 0x09, 0x00, /* nop */
1882 0x09, 0x00, /* nop */
1883 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1884 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1887 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1890 /* Big-endian non-PIC. */
1891 elf_sh_plt0_entry_be,
1892 ELF_PLT_ENTRY_SIZE,
1893 { MINUS_ONE, 24, 20 },
1894 elf_sh_plt_entry_be,
1895 ELF_PLT_ENTRY_SIZE,
1896 { 20, 16, 24 },
1900 /* Little-endian non-PIC. */
1901 elf_sh_plt0_entry_le,
1902 ELF_PLT_ENTRY_SIZE,
1903 { MINUS_ONE, 24, 20 },
1904 elf_sh_plt_entry_le,
1905 ELF_PLT_ENTRY_SIZE,
1906 { 20, 16, 24 },
1912 /* Big-endian PIC. */
1913 elf_sh_plt0_entry_be,
1914 ELF_PLT_ENTRY_SIZE,
1915 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1916 elf_sh_pic_plt_entry_be,
1917 ELF_PLT_ENTRY_SIZE,
1918 { 20, MINUS_ONE, 24 },
1922 /* Little-endian PIC. */
1923 elf_sh_plt0_entry_le,
1924 ELF_PLT_ENTRY_SIZE,
1925 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1926 elf_sh_pic_plt_entry_le,
1927 ELF_PLT_ENTRY_SIZE,
1928 { 20, MINUS_ONE, 24 },
1934 #define VXWORKS_PLT_HEADER_SIZE 12
1935 #define VXWORKS_PLT_ENTRY_SIZE 24
1937 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1939 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1940 0x61, 0x12, /* mov.l @r1,r1 */
1941 0x41, 0x2b, /* jmp @r1 */
1942 0x00, 0x09, /* nop */
1943 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1946 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1948 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1949 0x12, 0x61, /* mov.l @r1,r1 */
1950 0x2b, 0x41, /* jmp @r1 */
1951 0x09, 0x00, /* nop */
1952 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1955 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1957 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1958 0x60, 0x02, /* mov.l @r0,r0 */
1959 0x40, 0x2b, /* jmp @r0 */
1960 0x00, 0x09, /* nop */
1961 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1962 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1963 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1964 0x00, 0x09, /* nop */
1965 0x00, 0x09, /* nop */
1966 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1969 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1971 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1972 0x02, 0x60, /* mov.l @r0,r0 */
1973 0x2b, 0x40, /* jmp @r0 */
1974 0x09, 0x00, /* nop */
1975 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1976 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1977 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1978 0x09, 0x00, /* nop */
1979 0x09, 0x00, /* nop */
1980 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1983 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1985 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1986 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1987 0x40, 0x2b, /* jmp @r0 */
1988 0x00, 0x09, /* nop */
1989 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1990 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1991 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1992 0x41, 0x2b, /* jmp @r1 */
1993 0x00, 0x09, /* nop */
1994 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1997 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1999 0x01, 0xd0, /* mov.l @(8,pc),r0 */
2000 0xce, 0x00, /* mov.l @(r0,r12),r0 */
2001 0x2b, 0x40, /* jmp @r0 */
2002 0x09, 0x00, /* nop */
2003 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
2004 0x01, 0xd0, /* mov.l @(8,pc),r0 */
2005 0xc2, 0x51, /* mov.l @(8,r12),r1 */
2006 0x2b, 0x41, /* jmp @r1 */
2007 0x09, 0x00, /* nop */
2008 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
2011 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
2014 /* Big-endian non-PIC. */
2015 vxworks_sh_plt0_entry_be,
2016 VXWORKS_PLT_HEADER_SIZE,
2017 { MINUS_ONE, MINUS_ONE, 8 },
2018 vxworks_sh_plt_entry_be,
2019 VXWORKS_PLT_ENTRY_SIZE,
2020 { 8, 14, 20 },
2024 /* Little-endian non-PIC. */
2025 vxworks_sh_plt0_entry_le,
2026 VXWORKS_PLT_HEADER_SIZE,
2027 { MINUS_ONE, MINUS_ONE, 8 },
2028 vxworks_sh_plt_entry_le,
2029 VXWORKS_PLT_ENTRY_SIZE,
2030 { 8, 14, 20 },
2036 /* Big-endian PIC. */
2037 NULL,
2039 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2040 vxworks_sh_pic_plt_entry_be,
2041 VXWORKS_PLT_ENTRY_SIZE,
2042 { 8, MINUS_ONE, 20 },
2046 /* Little-endian PIC. */
2047 NULL,
2049 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2050 vxworks_sh_pic_plt_entry_le,
2051 VXWORKS_PLT_ENTRY_SIZE,
2052 { 8, MINUS_ONE, 20 },
2058 /* Return the type of PLT associated with ABFD. PIC_P is true if
2059 the object is position-independent. */
2061 static const struct elf_sh_plt_info *
2062 get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
2064 if (vxworks_object_p (abfd))
2065 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2066 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2069 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2070 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2071 not data. */
2073 inline static void
2074 install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED,
2075 unsigned long value, bfd_byte *addr)
2077 bfd_put_32 (output_bfd, value, addr);
2079 #endif
2081 /* Return the index of the PLT entry at byte offset OFFSET. */
2083 static bfd_vma
2084 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2086 return (offset - info->plt0_entry_size) / info->symbol_entry_size;
2089 /* Do the inverse operation. */
2091 static bfd_vma
2092 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma index)
2094 return info->plt0_entry_size + (index * info->symbol_entry_size);
2097 /* The sh linker needs to keep track of the number of relocs that it
2098 decides to copy as dynamic relocs in check_relocs for each symbol.
2099 This is so that it can later discard them if they are found to be
2100 unnecessary. We store the information in a field extending the
2101 regular ELF linker hash table. */
2103 struct elf_sh_dyn_relocs
2105 struct elf_sh_dyn_relocs *next;
2107 /* The input section of the reloc. */
2108 asection *sec;
2110 /* Total number of relocs copied for the input section. */
2111 bfd_size_type count;
2113 /* Number of pc-relative relocs copied for the input section. */
2114 bfd_size_type pc_count;
2117 /* sh ELF linker hash entry. */
2119 struct elf_sh_link_hash_entry
2121 struct elf_link_hash_entry root;
2123 #ifdef INCLUDE_SHMEDIA
2124 union
2126 bfd_signed_vma refcount;
2127 bfd_vma offset;
2128 } datalabel_got;
2129 #endif
2131 /* Track dynamic relocs copied for this symbol. */
2132 struct elf_sh_dyn_relocs *dyn_relocs;
2134 bfd_signed_vma gotplt_refcount;
2136 enum {
2137 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE
2138 } tls_type;
2141 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2143 struct sh_elf_obj_tdata
2145 struct elf_obj_tdata root;
2147 /* tls_type for each local got entry. */
2148 char *local_got_tls_type;
2151 #define sh_elf_tdata(abfd) \
2152 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2154 #define sh_elf_local_got_tls_type(abfd) \
2155 (sh_elf_tdata (abfd)->local_got_tls_type)
2157 #define is_sh_elf(bfd) \
2158 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2159 && elf_tdata (bfd) != NULL \
2160 && elf_object_id (bfd) == SH_ELF_TDATA)
2162 /* Override the generic function because we need to store sh_elf_obj_tdata
2163 as the specific tdata. */
2165 static bfd_boolean
2166 sh_elf_mkobject (bfd *abfd)
2168 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2169 SH_ELF_TDATA);
2172 /* sh ELF linker hash table. */
2174 struct elf_sh_link_hash_table
2176 struct elf_link_hash_table root;
2178 /* Short-cuts to get to dynamic linker sections. */
2179 asection *sgot;
2180 asection *sgotplt;
2181 asection *srelgot;
2182 asection *splt;
2183 asection *srelplt;
2184 asection *sdynbss;
2185 asection *srelbss;
2187 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2188 asection *srelplt2;
2190 /* Small local sym to section mapping cache. */
2191 struct sym_sec_cache sym_sec;
2193 /* A counter or offset to track a TLS got entry. */
2194 union
2196 bfd_signed_vma refcount;
2197 bfd_vma offset;
2198 } tls_ldm_got;
2200 /* The type of PLT to use. */
2201 const struct elf_sh_plt_info *plt_info;
2203 /* True if the target system is VxWorks. */
2204 bfd_boolean vxworks_p;
2207 /* Traverse an sh ELF linker hash table. */
2209 #define sh_elf_link_hash_traverse(table, func, info) \
2210 (elf_link_hash_traverse \
2211 (&(table)->root, \
2212 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2213 (info)))
2215 /* Get the sh ELF linker hash table from a link_info structure. */
2217 #define sh_elf_hash_table(p) \
2218 ((struct elf_sh_link_hash_table *) ((p)->hash))
2220 /* Create an entry in an sh ELF linker hash table. */
2222 static struct bfd_hash_entry *
2223 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2224 struct bfd_hash_table *table,
2225 const char *string)
2227 struct elf_sh_link_hash_entry *ret =
2228 (struct elf_sh_link_hash_entry *) entry;
2230 /* Allocate the structure if it has not already been allocated by a
2231 subclass. */
2232 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2233 ret = ((struct elf_sh_link_hash_entry *)
2234 bfd_hash_allocate (table,
2235 sizeof (struct elf_sh_link_hash_entry)));
2236 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2237 return (struct bfd_hash_entry *) ret;
2239 /* Call the allocation method of the superclass. */
2240 ret = ((struct elf_sh_link_hash_entry *)
2241 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2242 table, string));
2243 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2245 ret->dyn_relocs = NULL;
2246 ret->gotplt_refcount = 0;
2247 #ifdef INCLUDE_SHMEDIA
2248 ret->datalabel_got.refcount = ret->root.got.refcount;
2249 #endif
2250 ret->tls_type = GOT_UNKNOWN;
2253 return (struct bfd_hash_entry *) ret;
2256 /* Create an sh ELF linker hash table. */
2258 static struct bfd_link_hash_table *
2259 sh_elf_link_hash_table_create (bfd *abfd)
2261 struct elf_sh_link_hash_table *ret;
2262 bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
2264 ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt);
2265 if (ret == (struct elf_sh_link_hash_table *) NULL)
2266 return NULL;
2268 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2269 sh_elf_link_hash_newfunc,
2270 sizeof (struct elf_sh_link_hash_entry)))
2272 free (ret);
2273 return NULL;
2276 ret->sgot = NULL;
2277 ret->sgotplt = NULL;
2278 ret->srelgot = NULL;
2279 ret->splt = NULL;
2280 ret->srelplt = NULL;
2281 ret->sdynbss = NULL;
2282 ret->srelbss = NULL;
2283 ret->srelplt2 = NULL;
2284 ret->sym_sec.abfd = NULL;
2285 ret->tls_ldm_got.refcount = 0;
2286 ret->plt_info = NULL;
2287 ret->vxworks_p = vxworks_object_p (abfd);
2289 return &ret->root.root;
2292 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2293 shortcuts to them in our hash table. */
2295 static bfd_boolean
2296 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2298 struct elf_sh_link_hash_table *htab;
2300 if (! _bfd_elf_create_got_section (dynobj, info))
2301 return FALSE;
2303 htab = sh_elf_hash_table (info);
2304 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2305 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2306 if (! htab->sgot || ! htab->sgotplt)
2307 abort ();
2309 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
2310 (SEC_ALLOC | SEC_LOAD
2311 | SEC_HAS_CONTENTS
2312 | SEC_IN_MEMORY
2313 | SEC_LINKER_CREATED
2314 | SEC_READONLY));
2315 if (htab->srelgot == NULL
2316 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2317 return FALSE;
2318 return TRUE;
2321 /* Create dynamic sections when linking against a dynamic object. */
2323 static bfd_boolean
2324 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2326 struct elf_sh_link_hash_table *htab;
2327 flagword flags, pltflags;
2328 register asection *s;
2329 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2330 int ptralign = 0;
2332 switch (bed->s->arch_size)
2334 case 32:
2335 ptralign = 2;
2336 break;
2338 case 64:
2339 ptralign = 3;
2340 break;
2342 default:
2343 bfd_set_error (bfd_error_bad_value);
2344 return FALSE;
2347 htab = sh_elf_hash_table (info);
2348 if (htab->root.dynamic_sections_created)
2349 return TRUE;
2351 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2352 .rel[a].bss sections. */
2354 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2355 | SEC_LINKER_CREATED);
2357 pltflags = flags;
2358 pltflags |= SEC_CODE;
2359 if (bed->plt_not_loaded)
2360 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2361 if (bed->plt_readonly)
2362 pltflags |= SEC_READONLY;
2364 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
2365 htab->splt = s;
2366 if (s == NULL
2367 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2368 return FALSE;
2370 if (bed->want_plt_sym)
2372 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2373 .plt section. */
2374 struct elf_link_hash_entry *h;
2375 struct bfd_link_hash_entry *bh = NULL;
2377 if (! (_bfd_generic_link_add_one_symbol
2378 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2379 (bfd_vma) 0, (const char *) NULL, FALSE,
2380 get_elf_backend_data (abfd)->collect, &bh)))
2381 return FALSE;
2383 h = (struct elf_link_hash_entry *) bh;
2384 h->def_regular = 1;
2385 h->type = STT_OBJECT;
2386 htab->root.hplt = h;
2388 if (info->shared
2389 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2390 return FALSE;
2393 s = bfd_make_section_with_flags (abfd,
2394 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
2395 flags | SEC_READONLY);
2396 htab->srelplt = s;
2397 if (s == NULL
2398 || ! bfd_set_section_alignment (abfd, s, ptralign))
2399 return FALSE;
2401 if (htab->sgot == NULL
2402 && !create_got_section (abfd, info))
2403 return FALSE;
2406 const char *secname;
2407 char *relname;
2408 flagword secflags;
2409 asection *sec;
2411 for (sec = abfd->sections; sec; sec = sec->next)
2413 secflags = bfd_get_section_flags (abfd, sec);
2414 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
2415 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
2416 continue;
2417 secname = bfd_get_section_name (abfd, sec);
2418 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
2419 strcpy (relname, ".rela");
2420 strcat (relname, secname);
2421 if (bfd_get_section_by_name (abfd, secname))
2422 continue;
2423 s = bfd_make_section_with_flags (abfd, relname,
2424 flags | SEC_READONLY);
2425 if (s == NULL
2426 || ! bfd_set_section_alignment (abfd, s, ptralign))
2427 return FALSE;
2431 if (bed->want_dynbss)
2433 /* The .dynbss section is a place to put symbols which are defined
2434 by dynamic objects, are referenced by regular objects, and are
2435 not functions. We must allocate space for them in the process
2436 image and use a R_*_COPY reloc to tell the dynamic linker to
2437 initialize them at run time. The linker script puts the .dynbss
2438 section into the .bss section of the final image. */
2439 s = bfd_make_section_with_flags (abfd, ".dynbss",
2440 SEC_ALLOC | SEC_LINKER_CREATED);
2441 htab->sdynbss = s;
2442 if (s == NULL)
2443 return FALSE;
2445 /* The .rel[a].bss section holds copy relocs. This section is not
2446 normally needed. We need to create it here, though, so that the
2447 linker will map it to an output section. We can't just create it
2448 only if we need it, because we will not know whether we need it
2449 until we have seen all the input files, and the first time the
2450 main linker code calls BFD after examining all the input files
2451 (size_dynamic_sections) the input sections have already been
2452 mapped to the output sections. If the section turns out not to
2453 be needed, we can discard it later. We will never need this
2454 section when generating a shared object, since they do not use
2455 copy relocs. */
2456 if (! info->shared)
2458 s = bfd_make_section_with_flags (abfd,
2459 (bed->default_use_rela_p
2460 ? ".rela.bss" : ".rel.bss"),
2461 flags | SEC_READONLY);
2462 htab->srelbss = s;
2463 if (s == NULL
2464 || ! bfd_set_section_alignment (abfd, s, ptralign))
2465 return FALSE;
2469 if (htab->vxworks_p)
2471 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2472 return FALSE;
2475 return TRUE;
2478 /* Adjust a symbol defined by a dynamic object and referenced by a
2479 regular object. The current definition is in some section of the
2480 dynamic object, but we're not including those sections. We have to
2481 change the definition to something the rest of the link can
2482 understand. */
2484 static bfd_boolean
2485 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2486 struct elf_link_hash_entry *h)
2488 struct elf_sh_link_hash_table *htab;
2489 struct elf_sh_link_hash_entry *eh;
2490 struct elf_sh_dyn_relocs *p;
2491 asection *s;
2493 htab = sh_elf_hash_table (info);
2495 /* Make sure we know what is going on here. */
2496 BFD_ASSERT (htab->root.dynobj != NULL
2497 && (h->needs_plt
2498 || h->u.weakdef != NULL
2499 || (h->def_dynamic
2500 && h->ref_regular
2501 && !h->def_regular)));
2503 /* If this is a function, put it in the procedure linkage table. We
2504 will fill in the contents of the procedure linkage table later,
2505 when we know the address of the .got section. */
2506 if (h->type == STT_FUNC
2507 || h->needs_plt)
2509 if (h->plt.refcount <= 0
2510 || SYMBOL_CALLS_LOCAL (info, h)
2511 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2512 && h->root.type == bfd_link_hash_undefweak))
2514 /* This case can occur if we saw a PLT reloc in an input
2515 file, but the symbol was never referred to by a dynamic
2516 object. In such a case, we don't actually need to build
2517 a procedure linkage table, and we can just do a REL32
2518 reloc instead. */
2519 h->plt.offset = (bfd_vma) -1;
2520 h->needs_plt = 0;
2523 return TRUE;
2525 else
2526 h->plt.offset = (bfd_vma) -1;
2528 /* If this is a weak symbol, and there is a real definition, the
2529 processor independent code will have arranged for us to see the
2530 real definition first, and we can just use the same value. */
2531 if (h->u.weakdef != NULL)
2533 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2534 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2535 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2536 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2537 if (info->nocopyreloc)
2538 h->non_got_ref = h->u.weakdef->non_got_ref;
2539 return TRUE;
2542 /* This is a reference to a symbol defined by a dynamic object which
2543 is not a function. */
2545 /* If we are creating a shared library, we must presume that the
2546 only references to the symbol are via the global offset table.
2547 For such cases we need not do anything here; the relocations will
2548 be handled correctly by relocate_section. */
2549 if (info->shared)
2550 return TRUE;
2552 /* If there are no references to this symbol that do not use the
2553 GOT, we don't need to generate a copy reloc. */
2554 if (!h->non_got_ref)
2555 return TRUE;
2557 /* If -z nocopyreloc was given, we won't generate them either. */
2558 if (info->nocopyreloc)
2560 h->non_got_ref = 0;
2561 return TRUE;
2564 eh = (struct elf_sh_link_hash_entry *) h;
2565 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2567 s = p->sec->output_section;
2568 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2569 break;
2572 /* If we didn't find any dynamic relocs in sections which needs the
2573 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2574 the copy reloc. */
2575 if (p == NULL)
2577 h->non_got_ref = 0;
2578 return TRUE;
2581 if (h->size == 0)
2583 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2584 h->root.root.string);
2585 return TRUE;
2588 /* We must allocate the symbol in our .dynbss section, which will
2589 become part of the .bss section of the executable. There will be
2590 an entry for this symbol in the .dynsym section. The dynamic
2591 object will contain position independent code, so all references
2592 from the dynamic object to this symbol will go through the global
2593 offset table. The dynamic linker will use the .dynsym entry to
2594 determine the address it must put in the global offset table, so
2595 both the dynamic object and the regular object will refer to the
2596 same memory location for the variable. */
2598 s = htab->sdynbss;
2599 BFD_ASSERT (s != NULL);
2601 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2602 copy the initial value out of the dynamic object and into the
2603 runtime process image. We need to remember the offset into the
2604 .rela.bss section we are going to use. */
2605 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2607 asection *srel;
2609 srel = htab->srelbss;
2610 BFD_ASSERT (srel != NULL);
2611 srel->size += sizeof (Elf32_External_Rela);
2612 h->needs_copy = 1;
2615 return _bfd_elf_adjust_dynamic_copy (h, s);
2618 /* Allocate space in .plt, .got and associated reloc sections for
2619 dynamic relocs. */
2621 static bfd_boolean
2622 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2624 struct bfd_link_info *info;
2625 struct elf_sh_link_hash_table *htab;
2626 struct elf_sh_link_hash_entry *eh;
2627 struct elf_sh_dyn_relocs *p;
2629 if (h->root.type == bfd_link_hash_indirect)
2630 return TRUE;
2632 if (h->root.type == bfd_link_hash_warning)
2633 /* When warning symbols are created, they **replace** the "real"
2634 entry in the hash table, thus we never get to see the real
2635 symbol in a hash traversal. So look at it now. */
2636 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2638 info = (struct bfd_link_info *) inf;
2639 htab = sh_elf_hash_table (info);
2641 eh = (struct elf_sh_link_hash_entry *) h;
2642 if ((h->got.refcount > 0
2643 || h->forced_local)
2644 && eh->gotplt_refcount > 0)
2646 /* The symbol has been forced local, or we have some direct got refs,
2647 so treat all the gotplt refs as got refs. */
2648 h->got.refcount += eh->gotplt_refcount;
2649 if (h->plt.refcount >= eh->gotplt_refcount)
2650 h->plt.refcount -= eh->gotplt_refcount;
2653 if (htab->root.dynamic_sections_created
2654 && h->plt.refcount > 0
2655 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2656 || h->root.type != bfd_link_hash_undefweak))
2658 /* Make sure this symbol is output as a dynamic symbol.
2659 Undefined weak syms won't yet be marked as dynamic. */
2660 if (h->dynindx == -1
2661 && !h->forced_local)
2663 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2664 return FALSE;
2667 if (info->shared
2668 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2670 asection *s = htab->splt;
2672 /* If this is the first .plt entry, make room for the special
2673 first entry. */
2674 if (s->size == 0)
2675 s->size += htab->plt_info->plt0_entry_size;
2677 h->plt.offset = s->size;
2679 /* If this symbol is not defined in a regular file, and we are
2680 not generating a shared library, then set the symbol to this
2681 location in the .plt. This is required to make function
2682 pointers compare as equal between the normal executable and
2683 the shared library. */
2684 if (! info->shared
2685 && !h->def_regular)
2687 h->root.u.def.section = s;
2688 h->root.u.def.value = h->plt.offset;
2691 /* Make room for this entry. */
2692 s->size += htab->plt_info->symbol_entry_size;
2694 /* We also need to make an entry in the .got.plt section, which
2695 will be placed in the .got section by the linker script. */
2696 htab->sgotplt->size += 4;
2698 /* We also need to make an entry in the .rel.plt section. */
2699 htab->srelplt->size += sizeof (Elf32_External_Rela);
2701 if (htab->vxworks_p && !info->shared)
2703 /* VxWorks executables have a second set of relocations
2704 for each PLT entry. They go in a separate relocation
2705 section, which is processed by the kernel loader. */
2707 /* There is a relocation for the initial PLT entry:
2708 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2709 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2710 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2712 /* There are two extra relocations for each subsequent
2713 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2714 and an R_SH_DIR32 relocation for the PLT entry. */
2715 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2718 else
2720 h->plt.offset = (bfd_vma) -1;
2721 h->needs_plt = 0;
2724 else
2726 h->plt.offset = (bfd_vma) -1;
2727 h->needs_plt = 0;
2730 if (h->got.refcount > 0)
2732 asection *s;
2733 bfd_boolean dyn;
2734 int tls_type = sh_elf_hash_entry (h)->tls_type;
2736 /* Make sure this symbol is output as a dynamic symbol.
2737 Undefined weak syms won't yet be marked as dynamic. */
2738 if (h->dynindx == -1
2739 && !h->forced_local)
2741 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2742 return FALSE;
2745 s = htab->sgot;
2746 h->got.offset = s->size;
2747 s->size += 4;
2748 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2749 if (tls_type == GOT_TLS_GD)
2750 s->size += 4;
2751 dyn = htab->root.dynamic_sections_created;
2752 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2753 R_SH_TLS_GD needs one if local symbol and two if global. */
2754 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2755 || (tls_type == GOT_TLS_IE && dyn))
2756 htab->srelgot->size += sizeof (Elf32_External_Rela);
2757 else if (tls_type == GOT_TLS_GD)
2758 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2759 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2760 || h->root.type != bfd_link_hash_undefweak)
2761 && (info->shared
2762 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2763 htab->srelgot->size += sizeof (Elf32_External_Rela);
2765 else
2766 h->got.offset = (bfd_vma) -1;
2768 #ifdef INCLUDE_SHMEDIA
2769 if (eh->datalabel_got.refcount > 0)
2771 asection *s;
2772 bfd_boolean dyn;
2774 /* Make sure this symbol is output as a dynamic symbol.
2775 Undefined weak syms won't yet be marked as dynamic. */
2776 if (h->dynindx == -1
2777 && !h->forced_local)
2779 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2780 return FALSE;
2783 s = htab->sgot;
2784 eh->datalabel_got.offset = s->size;
2785 s->size += 4;
2786 dyn = htab->root.dynamic_sections_created;
2787 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2788 htab->srelgot->size += sizeof (Elf32_External_Rela);
2790 else
2791 eh->datalabel_got.offset = (bfd_vma) -1;
2792 #endif
2794 if (eh->dyn_relocs == NULL)
2795 return TRUE;
2797 /* In the shared -Bsymbolic case, discard space allocated for
2798 dynamic pc-relative relocs against symbols which turn out to be
2799 defined in regular objects. For the normal shared case, discard
2800 space for pc-relative relocs that have become local due to symbol
2801 visibility changes. */
2803 if (info->shared)
2805 if (SYMBOL_CALLS_LOCAL (info, h))
2807 struct elf_sh_dyn_relocs **pp;
2809 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2811 p->count -= p->pc_count;
2812 p->pc_count = 0;
2813 if (p->count == 0)
2814 *pp = p->next;
2815 else
2816 pp = &p->next;
2820 /* Also discard relocs on undefined weak syms with non-default
2821 visibility. */
2822 if (eh->dyn_relocs != NULL
2823 && h->root.type == bfd_link_hash_undefweak)
2825 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2826 eh->dyn_relocs = NULL;
2828 /* Make sure undefined weak symbols are output as a dynamic
2829 symbol in PIEs. */
2830 else if (h->dynindx == -1
2831 && !h->forced_local)
2833 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2834 return FALSE;
2838 else
2840 /* For the non-shared case, discard space for relocs against
2841 symbols which turn out to need copy relocs or are not
2842 dynamic. */
2844 if (!h->non_got_ref
2845 && ((h->def_dynamic
2846 && !h->def_regular)
2847 || (htab->root.dynamic_sections_created
2848 && (h->root.type == bfd_link_hash_undefweak
2849 || h->root.type == bfd_link_hash_undefined))))
2851 /* Make sure this symbol is output as a dynamic symbol.
2852 Undefined weak syms won't yet be marked as dynamic. */
2853 if (h->dynindx == -1
2854 && !h->forced_local)
2856 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2857 return FALSE;
2860 /* If that succeeded, we know we'll be keeping all the
2861 relocs. */
2862 if (h->dynindx != -1)
2863 goto keep;
2866 eh->dyn_relocs = NULL;
2868 keep: ;
2871 /* Finally, allocate space. */
2872 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2874 asection *sreloc = elf_section_data (p->sec)->sreloc;
2875 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2878 return TRUE;
2881 /* Find any dynamic relocs that apply to read-only sections. */
2883 static bfd_boolean
2884 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2886 struct elf_sh_link_hash_entry *eh;
2887 struct elf_sh_dyn_relocs *p;
2889 if (h->root.type == bfd_link_hash_warning)
2890 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2892 eh = (struct elf_sh_link_hash_entry *) h;
2893 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2895 asection *s = p->sec->output_section;
2897 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2899 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2901 info->flags |= DF_TEXTREL;
2903 /* Not an error, just cut short the traversal. */
2904 return FALSE;
2907 return TRUE;
2910 /* This function is called after all the input files have been read,
2911 and the input sections have been assigned to output sections.
2912 It's a convenient place to determine the PLT style. */
2914 static bfd_boolean
2915 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2917 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared);
2918 return TRUE;
2921 /* Set the sizes of the dynamic sections. */
2923 static bfd_boolean
2924 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2925 struct bfd_link_info *info)
2927 struct elf_sh_link_hash_table *htab;
2928 bfd *dynobj;
2929 asection *s;
2930 bfd_boolean relocs;
2931 bfd *ibfd;
2933 htab = sh_elf_hash_table (info);
2934 dynobj = htab->root.dynobj;
2935 BFD_ASSERT (dynobj != NULL);
2937 if (htab->root.dynamic_sections_created)
2939 /* Set the contents of the .interp section to the interpreter. */
2940 if (info->executable)
2942 s = bfd_get_section_by_name (dynobj, ".interp");
2943 BFD_ASSERT (s != NULL);
2944 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2945 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2949 /* Set up .got offsets for local syms, and space for local dynamic
2950 relocs. */
2951 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2953 bfd_signed_vma *local_got;
2954 bfd_signed_vma *end_local_got;
2955 char *local_tls_type;
2956 bfd_size_type locsymcount;
2957 Elf_Internal_Shdr *symtab_hdr;
2958 asection *srel;
2960 if (! is_sh_elf (ibfd))
2961 continue;
2963 for (s = ibfd->sections; s != NULL; s = s->next)
2965 struct elf_sh_dyn_relocs *p;
2967 for (p = ((struct elf_sh_dyn_relocs *)
2968 elf_section_data (s)->local_dynrel);
2969 p != NULL;
2970 p = p->next)
2972 if (! bfd_is_abs_section (p->sec)
2973 && bfd_is_abs_section (p->sec->output_section))
2975 /* Input section has been discarded, either because
2976 it is a copy of a linkonce section or due to
2977 linker script /DISCARD/, so we'll be discarding
2978 the relocs too. */
2980 else if (p->count != 0)
2982 srel = elf_section_data (p->sec)->sreloc;
2983 srel->size += p->count * sizeof (Elf32_External_Rela);
2984 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2985 info->flags |= DF_TEXTREL;
2990 local_got = elf_local_got_refcounts (ibfd);
2991 if (!local_got)
2992 continue;
2994 symtab_hdr = &elf_symtab_hdr (ibfd);
2995 locsymcount = symtab_hdr->sh_info;
2996 #ifdef INCLUDE_SHMEDIA
2997 /* Count datalabel local GOT. */
2998 locsymcount *= 2;
2999 #endif
3000 end_local_got = local_got + locsymcount;
3001 local_tls_type = sh_elf_local_got_tls_type (ibfd);
3002 s = htab->sgot;
3003 srel = htab->srelgot;
3004 for (; local_got < end_local_got; ++local_got)
3006 if (*local_got > 0)
3008 *local_got = s->size;
3009 s->size += 4;
3010 if (*local_tls_type == GOT_TLS_GD)
3011 s->size += 4;
3012 if (info->shared)
3013 srel->size += sizeof (Elf32_External_Rela);
3015 else
3016 *local_got = (bfd_vma) -1;
3017 ++local_tls_type;
3021 if (htab->tls_ldm_got.refcount > 0)
3023 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3024 relocs. */
3025 htab->tls_ldm_got.offset = htab->sgot->size;
3026 htab->sgot->size += 8;
3027 htab->srelgot->size += sizeof (Elf32_External_Rela);
3029 else
3030 htab->tls_ldm_got.offset = -1;
3032 /* Allocate global sym .plt and .got entries, and space for global
3033 sym dynamic relocs. */
3034 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3036 /* We now have determined the sizes of the various dynamic sections.
3037 Allocate memory for them. */
3038 relocs = FALSE;
3039 for (s = dynobj->sections; s != NULL; s = s->next)
3041 if ((s->flags & SEC_LINKER_CREATED) == 0)
3042 continue;
3044 if (s == htab->splt
3045 || s == htab->sgot
3046 || s == htab->sgotplt
3047 || s == htab->sdynbss)
3049 /* Strip this section if we don't need it; see the
3050 comment below. */
3052 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3054 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
3055 relocs = TRUE;
3057 /* We use the reloc_count field as a counter if we need
3058 to copy relocs into the output file. */
3059 s->reloc_count = 0;
3061 else
3063 /* It's not one of our sections, so don't allocate space. */
3064 continue;
3067 if (s->size == 0)
3069 /* If we don't need this section, strip it from the
3070 output file. This is mostly to handle .rela.bss and
3071 .rela.plt. We must create both sections in
3072 create_dynamic_sections, because they must be created
3073 before the linker maps input sections to output
3074 sections. The linker does that before
3075 adjust_dynamic_symbol is called, and it is that
3076 function which decides whether anything needs to go
3077 into these sections. */
3079 s->flags |= SEC_EXCLUDE;
3080 continue;
3083 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3084 continue;
3086 /* Allocate memory for the section contents. We use bfd_zalloc
3087 here in case unused entries are not reclaimed before the
3088 section's contents are written out. This should not happen,
3089 but this way if it does, we get a R_SH_NONE reloc instead
3090 of garbage. */
3091 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3092 if (s->contents == NULL)
3093 return FALSE;
3096 if (htab->root.dynamic_sections_created)
3098 /* Add some entries to the .dynamic section. We fill in the
3099 values later, in sh_elf_finish_dynamic_sections, but we
3100 must add the entries now so that we get the correct size for
3101 the .dynamic section. The DT_DEBUG entry is filled in by the
3102 dynamic linker and used by the debugger. */
3103 #define add_dynamic_entry(TAG, VAL) \
3104 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3106 if (info->executable)
3108 if (! add_dynamic_entry (DT_DEBUG, 0))
3109 return FALSE;
3112 if (htab->splt->size != 0)
3114 if (! add_dynamic_entry (DT_PLTGOT, 0)
3115 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3116 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3117 || ! add_dynamic_entry (DT_JMPREL, 0))
3118 return FALSE;
3121 if (relocs)
3123 if (! add_dynamic_entry (DT_RELA, 0)
3124 || ! add_dynamic_entry (DT_RELASZ, 0)
3125 || ! add_dynamic_entry (DT_RELAENT,
3126 sizeof (Elf32_External_Rela)))
3127 return FALSE;
3129 /* If any dynamic relocs apply to a read-only section,
3130 then we need a DT_TEXTREL entry. */
3131 if ((info->flags & DF_TEXTREL) == 0)
3132 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, info);
3134 if ((info->flags & DF_TEXTREL) != 0)
3136 if (! add_dynamic_entry (DT_TEXTREL, 0))
3137 return FALSE;
3140 if (htab->vxworks_p
3141 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3142 return FALSE;
3144 #undef add_dynamic_entry
3146 return TRUE;
3149 /* Relocate an SH ELF section. */
3151 static bfd_boolean
3152 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3153 bfd *input_bfd, asection *input_section,
3154 bfd_byte *contents, Elf_Internal_Rela *relocs,
3155 Elf_Internal_Sym *local_syms,
3156 asection **local_sections)
3158 struct elf_sh_link_hash_table *htab;
3159 Elf_Internal_Shdr *symtab_hdr;
3160 struct elf_link_hash_entry **sym_hashes;
3161 Elf_Internal_Rela *rel, *relend;
3162 bfd *dynobj;
3163 bfd_vma *local_got_offsets;
3164 asection *sgot;
3165 asection *sgotplt;
3166 asection *splt;
3167 asection *sreloc;
3168 asection *srelgot;
3170 BFD_ASSERT (is_sh_elf (input_bfd));
3172 htab = sh_elf_hash_table (info);
3173 symtab_hdr = &elf_symtab_hdr (input_bfd);
3174 sym_hashes = elf_sym_hashes (input_bfd);
3175 dynobj = htab->root.dynobj;
3176 local_got_offsets = elf_local_got_offsets (input_bfd);
3178 sgot = htab->sgot;
3179 sgotplt = htab->sgotplt;
3180 splt = htab->splt;
3181 sreloc = NULL;
3182 srelgot = NULL;
3184 rel = relocs;
3185 relend = relocs + input_section->reloc_count;
3186 for (; rel < relend; rel++)
3188 int r_type;
3189 reloc_howto_type *howto;
3190 unsigned long r_symndx;
3191 Elf_Internal_Sym *sym;
3192 asection *sec;
3193 struct elf_link_hash_entry *h;
3194 bfd_vma relocation;
3195 bfd_vma addend = (bfd_vma) 0;
3196 bfd_reloc_status_type r;
3197 int seen_stt_datalabel = 0;
3198 bfd_vma off;
3199 int tls_type;
3201 r_symndx = ELF32_R_SYM (rel->r_info);
3203 r_type = ELF32_R_TYPE (rel->r_info);
3205 /* Many of the relocs are only used for relaxing, and are
3206 handled entirely by the relaxation code. */
3207 if (r_type >= (int) R_SH_GNU_VTINHERIT
3208 && r_type <= (int) R_SH_LABEL)
3209 continue;
3210 if (r_type == (int) R_SH_NONE)
3211 continue;
3213 if (r_type < 0
3214 || r_type >= R_SH_max
3215 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3216 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3217 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3218 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3219 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3220 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3221 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3222 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3223 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3224 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2))
3226 bfd_set_error (bfd_error_bad_value);
3227 return FALSE;
3230 howto = get_howto_table (output_bfd) + r_type;
3232 /* For relocs that aren't partial_inplace, we get the addend from
3233 the relocation. */
3234 if (! howto->partial_inplace)
3235 addend = rel->r_addend;
3237 h = NULL;
3238 sym = NULL;
3239 sec = NULL;
3240 if (r_symndx < symtab_hdr->sh_info)
3242 sym = local_syms + r_symndx;
3243 sec = local_sections[r_symndx];
3244 relocation = (sec->output_section->vma
3245 + sec->output_offset
3246 + sym->st_value);
3247 /* A local symbol never has STO_SH5_ISA32, so we don't need
3248 datalabel processing here. Make sure this does not change
3249 without notice. */
3250 if ((sym->st_other & STO_SH5_ISA32) != 0)
3251 ((*info->callbacks->reloc_dangerous)
3252 (info,
3253 _("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
3254 input_bfd, input_section, rel->r_offset));
3256 if (sec != NULL && elf_discarded_section (sec))
3257 /* Handled below. */
3259 else if (info->relocatable)
3261 /* This is a relocatable link. We don't have to change
3262 anything, unless the reloc is against a section symbol,
3263 in which case we have to adjust according to where the
3264 section symbol winds up in the output section. */
3265 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3267 if (! howto->partial_inplace)
3269 /* For relocations with the addend in the
3270 relocation, we need just to update the addend.
3271 All real relocs are of type partial_inplace; this
3272 code is mostly for completeness. */
3273 rel->r_addend += sec->output_offset;
3275 continue;
3278 /* Relocs of type partial_inplace need to pick up the
3279 contents in the contents and add the offset resulting
3280 from the changed location of the section symbol.
3281 Using _bfd_final_link_relocate (e.g. goto
3282 final_link_relocate) here would be wrong, because
3283 relocations marked pc_relative would get the current
3284 location subtracted, and we must only do that at the
3285 final link. */
3286 r = _bfd_relocate_contents (howto, input_bfd,
3287 sec->output_offset
3288 + sym->st_value,
3289 contents + rel->r_offset);
3290 goto relocation_done;
3293 continue;
3295 else if (! howto->partial_inplace)
3297 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3298 addend = rel->r_addend;
3300 else if ((sec->flags & SEC_MERGE)
3301 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3303 asection *msec;
3305 if (howto->rightshift || howto->src_mask != 0xffffffff)
3307 (*_bfd_error_handler)
3308 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
3309 input_bfd, input_section,
3310 (long) rel->r_offset, howto->name);
3311 return FALSE;
3314 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3315 msec = sec;
3316 addend =
3317 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3318 - relocation;
3319 addend += msec->output_section->vma + msec->output_offset;
3320 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3321 addend = 0;
3324 else
3326 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3328 relocation = 0;
3329 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3330 while (h->root.type == bfd_link_hash_indirect
3331 || h->root.type == bfd_link_hash_warning)
3333 #ifdef INCLUDE_SHMEDIA
3334 /* If the reference passes a symbol marked with
3335 STT_DATALABEL, then any STO_SH5_ISA32 on the final value
3336 doesn't count. */
3337 seen_stt_datalabel |= h->type == STT_DATALABEL;
3338 #endif
3339 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3341 if (h->root.type == bfd_link_hash_defined
3342 || h->root.type == bfd_link_hash_defweak)
3344 bfd_boolean dyn;
3346 dyn = htab->root.dynamic_sections_created;
3347 sec = h->root.u.def.section;
3348 /* In these cases, we don't need the relocation value.
3349 We check specially because in some obscure cases
3350 sec->output_section will be NULL. */
3351 if (r_type == R_SH_GOTPC
3352 || r_type == R_SH_GOTPC_LOW16
3353 || r_type == R_SH_GOTPC_MEDLOW16
3354 || r_type == R_SH_GOTPC_MEDHI16
3355 || r_type == R_SH_GOTPC_HI16
3356 || ((r_type == R_SH_PLT32
3357 || r_type == R_SH_PLT_LOW16
3358 || r_type == R_SH_PLT_MEDLOW16
3359 || r_type == R_SH_PLT_MEDHI16
3360 || r_type == R_SH_PLT_HI16)
3361 && h->plt.offset != (bfd_vma) -1)
3362 || ((r_type == R_SH_GOT32
3363 || r_type == R_SH_GOT_LOW16
3364 || r_type == R_SH_GOT_MEDLOW16
3365 || r_type == R_SH_GOT_MEDHI16
3366 || r_type == R_SH_GOT_HI16)
3367 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3368 && (! info->shared
3369 || (! info->symbolic && h->dynindx != -1)
3370 || !h->def_regular))
3371 /* The cases above are those in which relocation is
3372 overwritten in the switch block below. The cases
3373 below are those in which we must defer relocation
3374 to run-time, because we can't resolve absolute
3375 addresses when creating a shared library. */
3376 || (info->shared
3377 && ((! info->symbolic && h->dynindx != -1)
3378 || !h->def_regular)
3379 && ((r_type == R_SH_DIR32
3380 && !h->forced_local)
3381 || (r_type == R_SH_REL32
3382 && !SYMBOL_CALLS_LOCAL (info, h)))
3383 && ((input_section->flags & SEC_ALLOC) != 0
3384 /* DWARF will emit R_SH_DIR32 relocations in its
3385 sections against symbols defined externally
3386 in shared libraries. We can't do anything
3387 with them here. */
3388 || ((input_section->flags & SEC_DEBUGGING) != 0
3389 && h->def_dynamic)))
3390 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3391 sections because such sections are not SEC_ALLOC and
3392 thus ld.so will not process them. */
3393 || (sec->output_section == NULL
3394 && ((input_section->flags & SEC_DEBUGGING) != 0
3395 && h->def_dynamic))
3396 || (sec->output_section == NULL
3397 && (sh_elf_hash_entry (h)->tls_type == GOT_TLS_IE
3398 || sh_elf_hash_entry (h)->tls_type == GOT_TLS_GD)))
3400 else if (sec->output_section != NULL)
3401 relocation = ((h->root.u.def.value
3402 + sec->output_section->vma
3403 + sec->output_offset)
3404 /* A STO_SH5_ISA32 causes a "bitor 1" to the
3405 symbol value, unless we've seen
3406 STT_DATALABEL on the way to it. */
3407 | ((h->other & STO_SH5_ISA32) != 0
3408 && ! seen_stt_datalabel));
3409 else if (!info->relocatable)
3411 (*_bfd_error_handler)
3412 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3413 input_bfd,
3414 input_section,
3415 (long) rel->r_offset,
3416 howto->name,
3417 h->root.root.string);
3418 return FALSE;
3421 else if (h->root.type == bfd_link_hash_undefweak)
3423 else if (info->unresolved_syms_in_objects == RM_IGNORE
3424 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3426 else if (!info->relocatable)
3428 if (! info->callbacks->undefined_symbol
3429 (info, h->root.root.string, input_bfd,
3430 input_section, rel->r_offset,
3431 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
3432 || ELF_ST_VISIBILITY (h->other))))
3433 return FALSE;
3437 if (sec != NULL && elf_discarded_section (sec))
3439 /* For relocs against symbols from removed linkonce sections,
3440 or sections discarded by a linker script, we just want the
3441 section contents zeroed. Avoid any special processing. */
3442 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3443 rel->r_info = 0;
3444 rel->r_addend = 0;
3445 continue;
3448 if (info->relocatable)
3449 continue;
3451 switch ((int) r_type)
3453 final_link_relocate:
3454 /* COFF relocs don't use the addend. The addend is used for
3455 R_SH_DIR32 to be compatible with other compilers. */
3456 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3457 contents, rel->r_offset,
3458 relocation, addend);
3459 break;
3461 case R_SH_IND12W:
3462 goto final_link_relocate;
3464 case R_SH_DIR8WPN:
3465 case R_SH_DIR8WPZ:
3466 case R_SH_DIR8WPL:
3467 /* If the reloc is against the start of this section, then
3468 the assembler has already taken care of it and the reloc
3469 is here only to assist in relaxing. If the reloc is not
3470 against the start of this section, then it's against an
3471 external symbol and we must deal with it ourselves. */
3472 if (input_section->output_section->vma + input_section->output_offset
3473 != relocation)
3475 int disp = (relocation
3476 - input_section->output_section->vma
3477 - input_section->output_offset
3478 - rel->r_offset);
3479 int mask = 0;
3480 switch (r_type)
3482 case R_SH_DIR8WPN:
3483 case R_SH_DIR8WPZ: mask = 1; break;
3484 case R_SH_DIR8WPL: mask = 3; break;
3485 default: mask = 0; break;
3487 if (disp & mask)
3489 ((*_bfd_error_handler)
3490 (_("%B: 0x%lx: fatal: unaligned branch target for relax-support relocation"),
3491 input_section->owner,
3492 (unsigned long) rel->r_offset));
3493 bfd_set_error (bfd_error_bad_value);
3494 return FALSE;
3496 relocation -= 4;
3497 goto final_link_relocate;
3499 r = bfd_reloc_ok;
3500 break;
3502 default:
3503 #ifdef INCLUDE_SHMEDIA
3504 if (shmedia_prepare_reloc (info, input_bfd, input_section,
3505 contents, rel, &relocation))
3506 goto final_link_relocate;
3507 #endif
3508 bfd_set_error (bfd_error_bad_value);
3509 return FALSE;
3511 case R_SH_DIR16:
3512 case R_SH_DIR8:
3513 case R_SH_DIR8U:
3514 case R_SH_DIR8S:
3515 case R_SH_DIR4U:
3516 goto final_link_relocate;
3518 case R_SH_DIR8UL:
3519 case R_SH_DIR4UL:
3520 if (relocation & 3)
3522 ((*_bfd_error_handler)
3523 (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3524 input_section->owner,
3525 (unsigned long) rel->r_offset, howto->name,
3526 (unsigned long) relocation));
3527 bfd_set_error (bfd_error_bad_value);
3528 return FALSE;
3530 goto final_link_relocate;
3532 case R_SH_DIR8UW:
3533 case R_SH_DIR8SW:
3534 case R_SH_DIR4UW:
3535 if (relocation & 1)
3537 ((*_bfd_error_handler)
3538 (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3539 input_section->owner,
3540 (unsigned long) rel->r_offset, howto->name,
3541 (unsigned long) relocation));
3542 bfd_set_error (bfd_error_bad_value);
3543 return FALSE;
3545 goto final_link_relocate;
3547 case R_SH_PSHA:
3548 if ((signed int)relocation < -32
3549 || (signed int)relocation > 32)
3551 ((*_bfd_error_handler)
3552 (_("%B: 0x%lx: fatal: R_SH_PSHA relocation %d not in range -32..32"),
3553 input_section->owner,
3554 (unsigned long) rel->r_offset,
3555 (unsigned long) relocation));
3556 bfd_set_error (bfd_error_bad_value);
3557 return FALSE;
3559 goto final_link_relocate;
3561 case R_SH_PSHL:
3562 if ((signed int)relocation < -16
3563 || (signed int)relocation > 16)
3565 ((*_bfd_error_handler)
3566 (_("%B: 0x%lx: fatal: R_SH_PSHL relocation %d not in range -32..32"),
3567 input_section->owner,
3568 (unsigned long) rel->r_offset,
3569 (unsigned long) relocation));
3570 bfd_set_error (bfd_error_bad_value);
3571 return FALSE;
3573 goto final_link_relocate;
3575 case R_SH_DIR32:
3576 case R_SH_REL32:
3577 #ifdef INCLUDE_SHMEDIA
3578 case R_SH_IMM_LOW16_PCREL:
3579 case R_SH_IMM_MEDLOW16_PCREL:
3580 case R_SH_IMM_MEDHI16_PCREL:
3581 case R_SH_IMM_HI16_PCREL:
3582 #endif
3583 if (info->shared
3584 && (h == NULL
3585 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3586 || h->root.type != bfd_link_hash_undefweak)
3587 && r_symndx != 0
3588 && (input_section->flags & SEC_ALLOC) != 0
3589 && (r_type == R_SH_DIR32
3590 || !SYMBOL_CALLS_LOCAL (info, h)))
3592 Elf_Internal_Rela outrel;
3593 bfd_byte *loc;
3594 bfd_boolean skip, relocate;
3596 /* When generating a shared object, these relocations
3597 are copied into the output file to be resolved at run
3598 time. */
3600 if (sreloc == NULL)
3602 const char *name;
3604 name = (bfd_elf_string_from_elf_section
3605 (input_bfd,
3606 elf_elfheader (input_bfd)->e_shstrndx,
3607 elf_section_data (input_section)->rel_hdr.sh_name));
3608 if (name == NULL)
3609 return FALSE;
3611 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3612 && strcmp (bfd_get_section_name (input_bfd,
3613 input_section),
3614 name + 5) == 0);
3616 sreloc = bfd_get_section_by_name (dynobj, name);
3617 BFD_ASSERT (sreloc != NULL);
3620 skip = FALSE;
3621 relocate = FALSE;
3623 outrel.r_offset =
3624 _bfd_elf_section_offset (output_bfd, info, input_section,
3625 rel->r_offset);
3626 if (outrel.r_offset == (bfd_vma) -1)
3627 skip = TRUE;
3628 else if (outrel.r_offset == (bfd_vma) -2)
3629 skip = TRUE, relocate = TRUE;
3630 outrel.r_offset += (input_section->output_section->vma
3631 + input_section->output_offset);
3633 if (skip)
3634 memset (&outrel, 0, sizeof outrel);
3635 else if (r_type == R_SH_REL32)
3637 BFD_ASSERT (h != NULL && h->dynindx != -1);
3638 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3639 outrel.r_addend
3640 = (howto->partial_inplace
3641 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3642 : addend);
3644 #ifdef INCLUDE_SHMEDIA
3645 else if (r_type == R_SH_IMM_LOW16_PCREL
3646 || r_type == R_SH_IMM_MEDLOW16_PCREL
3647 || r_type == R_SH_IMM_MEDHI16_PCREL
3648 || r_type == R_SH_IMM_HI16_PCREL)
3650 BFD_ASSERT (h != NULL && h->dynindx != -1);
3651 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3652 outrel.r_addend = addend;
3654 #endif
3655 else
3657 /* h->dynindx may be -1 if this symbol was marked to
3658 become local. */
3659 if (h == NULL
3660 || ((info->symbolic || h->dynindx == -1)
3661 && h->def_regular))
3663 relocate = howto->partial_inplace;
3664 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3666 else
3668 BFD_ASSERT (h->dynindx != -1);
3669 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3671 outrel.r_addend = relocation;
3672 outrel.r_addend
3673 += (howto->partial_inplace
3674 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3675 : addend);
3678 loc = sreloc->contents;
3679 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3680 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3682 /* If this reloc is against an external symbol, we do
3683 not want to fiddle with the addend. Otherwise, we
3684 need to include the symbol value so that it becomes
3685 an addend for the dynamic reloc. */
3686 if (! relocate)
3687 continue;
3689 goto final_link_relocate;
3691 case R_SH_GOTPLT32:
3692 #ifdef INCLUDE_SHMEDIA
3693 case R_SH_GOTPLT_LOW16:
3694 case R_SH_GOTPLT_MEDLOW16:
3695 case R_SH_GOTPLT_MEDHI16:
3696 case R_SH_GOTPLT_HI16:
3697 case R_SH_GOTPLT10BY4:
3698 case R_SH_GOTPLT10BY8:
3699 #endif
3700 /* Relocation is to the entry for this symbol in the
3701 procedure linkage table. */
3703 if (h == NULL
3704 || h->forced_local
3705 || ! info->shared
3706 || info->symbolic
3707 || h->dynindx == -1
3708 || h->plt.offset == (bfd_vma) -1
3709 || h->got.offset != (bfd_vma) -1)
3710 goto force_got;
3712 /* Relocation is to the entry for this symbol in the global
3713 offset table extension for the procedure linkage table. */
3715 BFD_ASSERT (sgotplt != NULL);
3716 relocation = (sgotplt->output_offset
3717 + (get_plt_index (htab->plt_info, h->plt.offset)
3718 + 3) * 4);
3720 #ifdef GOT_BIAS
3721 relocation -= GOT_BIAS;
3722 #endif
3724 goto final_link_relocate;
3726 force_got:
3727 case R_SH_GOT32:
3728 #ifdef INCLUDE_SHMEDIA
3729 case R_SH_GOT_LOW16:
3730 case R_SH_GOT_MEDLOW16:
3731 case R_SH_GOT_MEDHI16:
3732 case R_SH_GOT_HI16:
3733 case R_SH_GOT10BY4:
3734 case R_SH_GOT10BY8:
3735 #endif
3736 /* Relocation is to the entry for this symbol in the global
3737 offset table. */
3739 BFD_ASSERT (sgot != NULL);
3741 if (h != NULL)
3743 bfd_boolean dyn;
3745 off = h->got.offset;
3746 #ifdef INCLUDE_SHMEDIA
3747 if (seen_stt_datalabel)
3749 struct elf_sh_link_hash_entry *hsh;
3751 hsh = (struct elf_sh_link_hash_entry *)h;
3752 off = hsh->datalabel_got.offset;
3754 #endif
3755 BFD_ASSERT (off != (bfd_vma) -1);
3757 dyn = htab->root.dynamic_sections_created;
3758 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3759 || (info->shared
3760 && SYMBOL_REFERENCES_LOCAL (info, h))
3761 || (ELF_ST_VISIBILITY (h->other)
3762 && h->root.type == bfd_link_hash_undefweak))
3764 /* This is actually a static link, or it is a
3765 -Bsymbolic link and the symbol is defined
3766 locally, or the symbol was forced to be local
3767 because of a version file. We must initialize
3768 this entry in the global offset table. Since the
3769 offset must always be a multiple of 4, we use the
3770 least significant bit to record whether we have
3771 initialized it already.
3773 When doing a dynamic link, we create a .rela.got
3774 relocation entry to initialize the value. This
3775 is done in the finish_dynamic_symbol routine. */
3776 if ((off & 1) != 0)
3777 off &= ~1;
3778 else
3780 bfd_put_32 (output_bfd, relocation,
3781 sgot->contents + off);
3782 #ifdef INCLUDE_SHMEDIA
3783 if (seen_stt_datalabel)
3785 struct elf_sh_link_hash_entry *hsh;
3787 hsh = (struct elf_sh_link_hash_entry *)h;
3788 hsh->datalabel_got.offset |= 1;
3790 else
3791 #endif
3792 h->got.offset |= 1;
3796 relocation = sgot->output_offset + off;
3798 else
3800 #ifdef INCLUDE_SHMEDIA
3801 if (rel->r_addend)
3803 BFD_ASSERT (local_got_offsets != NULL
3804 && (local_got_offsets[symtab_hdr->sh_info
3805 + r_symndx]
3806 != (bfd_vma) -1));
3808 off = local_got_offsets[symtab_hdr->sh_info
3809 + r_symndx];
3811 else
3813 #endif
3814 BFD_ASSERT (local_got_offsets != NULL
3815 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3817 off = local_got_offsets[r_symndx];
3818 #ifdef INCLUDE_SHMEDIA
3820 #endif
3822 /* The offset must always be a multiple of 4. We use
3823 the least significant bit to record whether we have
3824 already generated the necessary reloc. */
3825 if ((off & 1) != 0)
3826 off &= ~1;
3827 else
3829 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3831 if (info->shared)
3833 Elf_Internal_Rela outrel;
3834 bfd_byte *loc;
3836 if (srelgot == NULL)
3838 srelgot = bfd_get_section_by_name (dynobj,
3839 ".rela.got");
3840 BFD_ASSERT (srelgot != NULL);
3843 outrel.r_offset = (sgot->output_section->vma
3844 + sgot->output_offset
3845 + off);
3846 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3847 outrel.r_addend = relocation;
3848 loc = srelgot->contents;
3849 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3850 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3853 #ifdef INCLUDE_SHMEDIA
3854 if (rel->r_addend)
3855 local_got_offsets[symtab_hdr->sh_info + r_symndx] |= 1;
3856 else
3857 #endif
3858 local_got_offsets[r_symndx] |= 1;
3861 relocation = sgot->output_offset + off;
3864 #ifdef GOT_BIAS
3865 relocation -= GOT_BIAS;
3866 #endif
3868 goto final_link_relocate;
3870 case R_SH_GOTOFF:
3871 #ifdef INCLUDE_SHMEDIA
3872 case R_SH_GOTOFF_LOW16:
3873 case R_SH_GOTOFF_MEDLOW16:
3874 case R_SH_GOTOFF_MEDHI16:
3875 case R_SH_GOTOFF_HI16:
3876 #endif
3877 /* Relocation is relative to the start of the global offset
3878 table. */
3880 BFD_ASSERT (sgot != NULL);
3882 /* Note that sgot->output_offset is not involved in this
3883 calculation. We always want the start of .got. If we
3884 defined _GLOBAL_OFFSET_TABLE in a different way, as is
3885 permitted by the ABI, we might have to change this
3886 calculation. */
3887 relocation -= sgot->output_section->vma;
3889 #ifdef GOT_BIAS
3890 relocation -= GOT_BIAS;
3891 #endif
3893 addend = rel->r_addend;
3895 goto final_link_relocate;
3897 case R_SH_GOTPC:
3898 #ifdef INCLUDE_SHMEDIA
3899 case R_SH_GOTPC_LOW16:
3900 case R_SH_GOTPC_MEDLOW16:
3901 case R_SH_GOTPC_MEDHI16:
3902 case R_SH_GOTPC_HI16:
3903 #endif
3904 /* Use global offset table as symbol value. */
3906 BFD_ASSERT (sgot != NULL);
3907 relocation = sgot->output_section->vma;
3909 #ifdef GOT_BIAS
3910 relocation += GOT_BIAS;
3911 #endif
3913 addend = rel->r_addend;
3915 goto final_link_relocate;
3917 case R_SH_PLT32:
3918 #ifdef INCLUDE_SHMEDIA
3919 case R_SH_PLT_LOW16:
3920 case R_SH_PLT_MEDLOW16:
3921 case R_SH_PLT_MEDHI16:
3922 case R_SH_PLT_HI16:
3923 #endif
3924 /* Relocation is to the entry for this symbol in the
3925 procedure linkage table. */
3927 /* Resolve a PLT reloc against a local symbol directly,
3928 without using the procedure linkage table. */
3929 if (h == NULL)
3930 goto final_link_relocate;
3932 if (h->forced_local)
3933 goto final_link_relocate;
3935 if (h->plt.offset == (bfd_vma) -1)
3937 /* We didn't make a PLT entry for this symbol. This
3938 happens when statically linking PIC code, or when
3939 using -Bsymbolic. */
3940 goto final_link_relocate;
3943 BFD_ASSERT (splt != NULL);
3944 relocation = (splt->output_section->vma
3945 + splt->output_offset
3946 + h->plt.offset);
3948 #ifdef INCLUDE_SHMEDIA
3949 relocation++;
3950 #endif
3952 addend = rel->r_addend;
3954 goto final_link_relocate;
3956 case R_SH_LOOP_START:
3958 static bfd_vma start, end;
3960 start = (relocation + rel->r_addend
3961 - (sec->output_section->vma + sec->output_offset));
3962 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3963 rel->r_offset, sec, start, end);
3964 break;
3966 case R_SH_LOOP_END:
3967 end = (relocation + rel->r_addend
3968 - (sec->output_section->vma + sec->output_offset));
3969 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3970 rel->r_offset, sec, start, end);
3971 break;
3974 case R_SH_TLS_GD_32:
3975 case R_SH_TLS_IE_32:
3976 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
3977 tls_type = GOT_UNKNOWN;
3978 if (h == NULL && local_got_offsets)
3979 tls_type = sh_elf_local_got_tls_type (input_bfd) [r_symndx];
3980 else if (h != NULL)
3982 tls_type = sh_elf_hash_entry (h)->tls_type;
3983 if (! info->shared
3984 && (h->dynindx == -1
3985 || h->def_regular))
3986 r_type = R_SH_TLS_LE_32;
3989 if (r_type == R_SH_TLS_GD_32 && tls_type == GOT_TLS_IE)
3990 r_type = R_SH_TLS_IE_32;
3992 if (r_type == R_SH_TLS_LE_32)
3994 bfd_vma offset;
3995 unsigned short insn;
3997 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
3999 /* GD->LE transition:
4000 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4001 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4002 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4003 We change it into:
4004 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4005 nop; nop; ...
4006 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4008 offset = rel->r_offset;
4009 BFD_ASSERT (offset >= 16);
4010 /* Size of GD instructions is 16 or 18. */
4011 offset -= 16;
4012 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4013 if ((insn & 0xff00) == 0xc700)
4015 BFD_ASSERT (offset >= 2);
4016 offset -= 2;
4017 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4020 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4021 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4022 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4023 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4024 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4025 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4026 BFD_ASSERT (insn == 0x310c);
4027 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4028 BFD_ASSERT (insn == 0x410b);
4029 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4030 BFD_ASSERT (insn == 0x34cc);
4032 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4033 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4034 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4035 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4036 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4038 else
4040 int index;
4042 /* IE->LE transition:
4043 mov.l 1f,r0; stc gbr,rN; mov.l @(r0,r12),rM;
4044 bra 2f; add ...; .align 2; 1: x@GOTTPOFF; 2:
4045 We change it into:
4046 mov.l .Ln,rM; stc gbr,rN; nop; ...;
4047 1: x@TPOFF; 2:. */
4049 offset = rel->r_offset;
4050 BFD_ASSERT (offset >= 16);
4051 /* Size of IE instructions is 10 or 12. */
4052 offset -= 10;
4053 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4054 if ((insn & 0xf0ff) == 0x0012)
4056 BFD_ASSERT (offset >= 2);
4057 offset -= 2;
4058 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4061 BFD_ASSERT ((insn & 0xff00) == 0xd000);
4062 index = insn & 0x00ff;
4063 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4064 BFD_ASSERT ((insn & 0xf0ff) == 0x0012);
4065 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4066 BFD_ASSERT ((insn & 0xf0ff) == 0x00ce);
4067 insn = 0xd000 | (insn & 0x0f00) | index;
4068 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4069 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4072 bfd_put_32 (output_bfd, tpoff (info, relocation),
4073 contents + rel->r_offset);
4074 continue;
4077 sgot = htab->sgot;
4078 if (sgot == NULL)
4079 abort ();
4081 if (h != NULL)
4082 off = h->got.offset;
4083 else
4085 if (local_got_offsets == NULL)
4086 abort ();
4088 off = local_got_offsets[r_symndx];
4091 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4092 if (r_type == R_SH_TLS_IE_32
4093 && ! htab->root.dynamic_sections_created)
4095 off &= ~1;
4096 bfd_put_32 (output_bfd, tpoff (info, relocation),
4097 sgot->contents + off);
4098 bfd_put_32 (output_bfd, sgot->output_offset + off,
4099 contents + rel->r_offset);
4100 continue;
4103 if ((off & 1) != 0)
4104 off &= ~1;
4105 else
4107 Elf_Internal_Rela outrel;
4108 bfd_byte *loc;
4109 int dr_type, indx;
4111 if (srelgot == NULL)
4113 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4114 BFD_ASSERT (srelgot != NULL);
4117 outrel.r_offset = (sgot->output_section->vma
4118 + sgot->output_offset + off);
4120 if (h == NULL || h->dynindx == -1)
4121 indx = 0;
4122 else
4123 indx = h->dynindx;
4125 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4126 R_SH_TLS_TPOFF32);
4127 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4128 outrel.r_addend = relocation - dtpoff_base (info);
4129 else
4130 outrel.r_addend = 0;
4131 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4132 loc = srelgot->contents;
4133 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4134 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4136 if (r_type == R_SH_TLS_GD_32)
4138 if (indx == 0)
4140 bfd_put_32 (output_bfd,
4141 relocation - dtpoff_base (info),
4142 sgot->contents + off + 4);
4144 else
4146 outrel.r_info = ELF32_R_INFO (indx,
4147 R_SH_TLS_DTPOFF32);
4148 outrel.r_offset += 4;
4149 outrel.r_addend = 0;
4150 srelgot->reloc_count++;
4151 loc += sizeof (Elf32_External_Rela);
4152 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4156 if (h != NULL)
4157 h->got.offset |= 1;
4158 else
4159 local_got_offsets[r_symndx] |= 1;
4162 if (off >= (bfd_vma) -2)
4163 abort ();
4165 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4166 relocation = sgot->output_offset + off;
4167 else
4169 bfd_vma offset;
4170 unsigned short insn;
4172 /* GD->IE transition:
4173 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4174 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4175 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4176 We change it into:
4177 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4178 nop; nop; bra 3f; nop; .align 2;
4179 1: .long x@TPOFF; 2:...; 3:. */
4181 offset = rel->r_offset;
4182 BFD_ASSERT (offset >= 16);
4183 /* Size of GD instructions is 16 or 18. */
4184 offset -= 16;
4185 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4186 if ((insn & 0xff00) == 0xc700)
4188 BFD_ASSERT (offset >= 2);
4189 offset -= 2;
4190 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4193 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4195 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4196 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4198 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4199 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4200 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4201 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4202 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4203 BFD_ASSERT (insn == 0x310c);
4204 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4205 BFD_ASSERT (insn == 0x410b);
4206 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4207 BFD_ASSERT (insn == 0x34cc);
4209 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4210 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4211 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4212 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4213 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4215 bfd_put_32 (output_bfd, sgot->output_offset + off,
4216 contents + rel->r_offset);
4218 continue;
4221 addend = rel->r_addend;
4223 goto final_link_relocate;
4225 case R_SH_TLS_LD_32:
4226 if (! info->shared)
4228 bfd_vma offset;
4229 unsigned short insn;
4231 /* LD->LE transition:
4232 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4233 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4234 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4235 We change it into:
4236 stc gbr,r0; nop; nop; nop;
4237 nop; nop; bra 3f; ...; 3:. */
4239 offset = rel->r_offset;
4240 BFD_ASSERT (offset >= 16);
4241 /* Size of LD instructions is 16 or 18. */
4242 offset -= 16;
4243 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4244 if ((insn & 0xff00) == 0xc700)
4246 BFD_ASSERT (offset >= 2);
4247 offset -= 2;
4248 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4251 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4252 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4253 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4254 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4255 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4256 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4257 BFD_ASSERT (insn == 0x310c);
4258 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4259 BFD_ASSERT (insn == 0x410b);
4260 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4261 BFD_ASSERT (insn == 0x34cc);
4263 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4264 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4265 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4266 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4267 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4268 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4270 continue;
4273 sgot = htab->sgot;
4274 if (sgot == NULL)
4275 abort ();
4277 off = htab->tls_ldm_got.offset;
4278 if (off & 1)
4279 off &= ~1;
4280 else
4282 Elf_Internal_Rela outrel;
4283 bfd_byte *loc;
4285 srelgot = htab->srelgot;
4286 if (srelgot == NULL)
4287 abort ();
4289 outrel.r_offset = (sgot->output_section->vma
4290 + sgot->output_offset + off);
4291 outrel.r_addend = 0;
4292 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4293 loc = srelgot->contents;
4294 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4295 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4296 htab->tls_ldm_got.offset |= 1;
4299 relocation = sgot->output_offset + off;
4300 addend = rel->r_addend;
4302 goto final_link_relocate;
4304 case R_SH_TLS_LDO_32:
4305 if (! info->shared)
4306 relocation = tpoff (info, relocation);
4307 else
4308 relocation -= dtpoff_base (info);
4310 addend = rel->r_addend;
4311 goto final_link_relocate;
4313 case R_SH_TLS_LE_32:
4315 int indx;
4316 Elf_Internal_Rela outrel;
4317 bfd_byte *loc;
4319 if (! info->shared)
4321 relocation = tpoff (info, relocation);
4322 addend = rel->r_addend;
4323 goto final_link_relocate;
4326 if (sreloc == NULL)
4328 const char *name;
4330 name = (bfd_elf_string_from_elf_section
4331 (input_bfd,
4332 elf_elfheader (input_bfd)->e_shstrndx,
4333 elf_section_data (input_section)->rel_hdr.sh_name));
4334 if (name == NULL)
4335 return FALSE;
4337 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
4338 && strcmp (bfd_get_section_name (input_bfd,
4339 input_section),
4340 name + 5) == 0);
4342 sreloc = bfd_get_section_by_name (dynobj, name);
4343 BFD_ASSERT (sreloc != NULL);
4346 if (h == NULL || h->dynindx == -1)
4347 indx = 0;
4348 else
4349 indx = h->dynindx;
4351 outrel.r_offset = (input_section->output_section->vma
4352 + input_section->output_offset
4353 + rel->r_offset);
4354 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4355 if (indx == 0)
4356 outrel.r_addend = relocation - dtpoff_base (info);
4357 else
4358 outrel.r_addend = 0;
4360 loc = sreloc->contents;
4361 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4362 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4363 continue;
4367 relocation_done:
4368 if (r != bfd_reloc_ok)
4370 switch (r)
4372 default:
4373 case bfd_reloc_outofrange:
4374 abort ();
4375 case bfd_reloc_overflow:
4377 const char *name;
4379 if (h != NULL)
4380 name = NULL;
4381 else
4383 name = (bfd_elf_string_from_elf_section
4384 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4385 if (name == NULL)
4386 return FALSE;
4387 if (*name == '\0')
4388 name = bfd_section_name (input_bfd, sec);
4390 if (! ((*info->callbacks->reloc_overflow)
4391 (info, (h ? &h->root : NULL), name, howto->name,
4392 (bfd_vma) 0, input_bfd, input_section,
4393 rel->r_offset)))
4394 return FALSE;
4396 break;
4401 return TRUE;
4404 /* This is a version of bfd_generic_get_relocated_section_contents
4405 which uses sh_elf_relocate_section. */
4407 static bfd_byte *
4408 sh_elf_get_relocated_section_contents (bfd *output_bfd,
4409 struct bfd_link_info *link_info,
4410 struct bfd_link_order *link_order,
4411 bfd_byte *data,
4412 bfd_boolean relocatable,
4413 asymbol **symbols)
4415 Elf_Internal_Shdr *symtab_hdr;
4416 asection *input_section = link_order->u.indirect.section;
4417 bfd *input_bfd = input_section->owner;
4418 asection **sections = NULL;
4419 Elf_Internal_Rela *internal_relocs = NULL;
4420 Elf_Internal_Sym *isymbuf = NULL;
4422 /* We only need to handle the case of relaxing, or of having a
4423 particular set of section contents, specially. */
4424 if (relocatable
4425 || elf_section_data (input_section)->this_hdr.contents == NULL)
4426 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
4427 link_order, data,
4428 relocatable,
4429 symbols);
4431 symtab_hdr = &elf_symtab_hdr (input_bfd);
4433 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
4434 (size_t) input_section->size);
4436 if ((input_section->flags & SEC_RELOC) != 0
4437 && input_section->reloc_count > 0)
4439 asection **secpp;
4440 Elf_Internal_Sym *isym, *isymend;
4441 bfd_size_type amt;
4443 internal_relocs = (_bfd_elf_link_read_relocs
4444 (input_bfd, input_section, NULL,
4445 (Elf_Internal_Rela *) NULL, FALSE));
4446 if (internal_relocs == NULL)
4447 goto error_return;
4449 if (symtab_hdr->sh_info != 0)
4451 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4452 if (isymbuf == NULL)
4453 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4454 symtab_hdr->sh_info, 0,
4455 NULL, NULL, NULL);
4456 if (isymbuf == NULL)
4457 goto error_return;
4460 amt = symtab_hdr->sh_info;
4461 amt *= sizeof (asection *);
4462 sections = (asection **) bfd_malloc (amt);
4463 if (sections == NULL && amt != 0)
4464 goto error_return;
4466 isymend = isymbuf + symtab_hdr->sh_info;
4467 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
4469 asection *isec;
4471 if (isym->st_shndx == SHN_UNDEF)
4472 isec = bfd_und_section_ptr;
4473 else if (isym->st_shndx == SHN_ABS)
4474 isec = bfd_abs_section_ptr;
4475 else if (isym->st_shndx == SHN_COMMON)
4476 isec = bfd_com_section_ptr;
4477 else
4478 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
4480 *secpp = isec;
4483 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
4484 input_section, data, internal_relocs,
4485 isymbuf, sections))
4486 goto error_return;
4488 if (sections != NULL)
4489 free (sections);
4490 if (isymbuf != NULL
4491 && symtab_hdr->contents != (unsigned char *) isymbuf)
4492 free (isymbuf);
4493 if (elf_section_data (input_section)->relocs != internal_relocs)
4494 free (internal_relocs);
4497 return data;
4499 error_return:
4500 if (sections != NULL)
4501 free (sections);
4502 if (isymbuf != NULL
4503 && symtab_hdr->contents != (unsigned char *) isymbuf)
4504 free (isymbuf);
4505 if (internal_relocs != NULL
4506 && elf_section_data (input_section)->relocs != internal_relocs)
4507 free (internal_relocs);
4508 return NULL;
4511 /* Return the base VMA address which should be subtracted from real addresses
4512 when resolving @dtpoff relocation.
4513 This is PT_TLS segment p_vaddr. */
4515 static bfd_vma
4516 dtpoff_base (struct bfd_link_info *info)
4518 /* If tls_sec is NULL, we should have signalled an error already. */
4519 if (elf_hash_table (info)->tls_sec == NULL)
4520 return 0;
4521 return elf_hash_table (info)->tls_sec->vma;
4524 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
4526 static bfd_vma
4527 tpoff (struct bfd_link_info *info, bfd_vma address)
4529 /* If tls_sec is NULL, we should have signalled an error already. */
4530 if (elf_hash_table (info)->tls_sec == NULL)
4531 return 0;
4532 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
4533 structure which has 2 pointer fields. */
4534 return (address - elf_hash_table (info)->tls_sec->vma
4535 + align_power ((bfd_vma) 8,
4536 elf_hash_table (info)->tls_sec->alignment_power));
4539 static asection *
4540 sh_elf_gc_mark_hook (asection *sec,
4541 struct bfd_link_info *info,
4542 Elf_Internal_Rela *rel,
4543 struct elf_link_hash_entry *h,
4544 Elf_Internal_Sym *sym)
4546 if (h != NULL)
4547 switch (ELF32_R_TYPE (rel->r_info))
4549 case R_SH_GNU_VTINHERIT:
4550 case R_SH_GNU_VTENTRY:
4551 return NULL;
4554 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4557 /* Update the got entry reference counts for the section being removed. */
4559 static bfd_boolean
4560 sh_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4561 asection *sec, const Elf_Internal_Rela *relocs)
4563 Elf_Internal_Shdr *symtab_hdr;
4564 struct elf_link_hash_entry **sym_hashes;
4565 bfd_signed_vma *local_got_refcounts;
4566 const Elf_Internal_Rela *rel, *relend;
4568 if (info->relocatable)
4569 return TRUE;
4571 elf_section_data (sec)->local_dynrel = NULL;
4573 symtab_hdr = &elf_symtab_hdr (abfd);
4574 sym_hashes = elf_sym_hashes (abfd);
4575 local_got_refcounts = elf_local_got_refcounts (abfd);
4577 relend = relocs + sec->reloc_count;
4578 for (rel = relocs; rel < relend; rel++)
4580 unsigned long r_symndx;
4581 unsigned int r_type;
4582 struct elf_link_hash_entry *h = NULL;
4583 #ifdef INCLUDE_SHMEDIA
4584 int seen_stt_datalabel = 0;
4585 #endif
4587 r_symndx = ELF32_R_SYM (rel->r_info);
4588 if (r_symndx >= symtab_hdr->sh_info)
4590 struct elf_sh_link_hash_entry *eh;
4591 struct elf_sh_dyn_relocs **pp;
4592 struct elf_sh_dyn_relocs *p;
4594 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4595 while (h->root.type == bfd_link_hash_indirect
4596 || h->root.type == bfd_link_hash_warning)
4598 #ifdef INCLUDE_SHMEDIA
4599 seen_stt_datalabel |= h->type == STT_DATALABEL;
4600 #endif
4601 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4603 eh = (struct elf_sh_link_hash_entry *) h;
4604 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4605 if (p->sec == sec)
4607 /* Everything must go for SEC. */
4608 *pp = p->next;
4609 break;
4613 r_type = ELF32_R_TYPE (rel->r_info);
4614 switch (sh_elf_optimized_tls_reloc (info, r_type, h != NULL))
4616 case R_SH_TLS_LD_32:
4617 if (sh_elf_hash_table (info)->tls_ldm_got.refcount > 0)
4618 sh_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
4619 break;
4621 case R_SH_GOT32:
4622 case R_SH_GOTOFF:
4623 case R_SH_GOTPC:
4624 #ifdef INCLUDE_SHMEDIA
4625 case R_SH_GOT_LOW16:
4626 case R_SH_GOT_MEDLOW16:
4627 case R_SH_GOT_MEDHI16:
4628 case R_SH_GOT_HI16:
4629 case R_SH_GOT10BY4:
4630 case R_SH_GOT10BY8:
4631 case R_SH_GOTOFF_LOW16:
4632 case R_SH_GOTOFF_MEDLOW16:
4633 case R_SH_GOTOFF_MEDHI16:
4634 case R_SH_GOTOFF_HI16:
4635 case R_SH_GOTPC_LOW16:
4636 case R_SH_GOTPC_MEDLOW16:
4637 case R_SH_GOTPC_MEDHI16:
4638 case R_SH_GOTPC_HI16:
4639 #endif
4640 case R_SH_TLS_GD_32:
4641 case R_SH_TLS_IE_32:
4642 if (h != NULL)
4644 #ifdef INCLUDE_SHMEDIA
4645 if (seen_stt_datalabel)
4647 struct elf_sh_link_hash_entry *eh;
4648 eh = (struct elf_sh_link_hash_entry *) h;
4649 if (eh->datalabel_got.refcount > 0)
4650 eh->datalabel_got.refcount -= 1;
4652 else
4653 #endif
4654 if (h->got.refcount > 0)
4655 h->got.refcount -= 1;
4657 else if (local_got_refcounts != NULL)
4659 #ifdef INCLUDE_SHMEDIA
4660 if (rel->r_addend & 1)
4662 if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4663 local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4665 else
4666 #endif
4667 if (local_got_refcounts[r_symndx] > 0)
4668 local_got_refcounts[r_symndx] -= 1;
4670 break;
4672 case R_SH_DIR32:
4673 case R_SH_REL32:
4674 if (info->shared)
4675 break;
4676 /* Fall thru */
4678 case R_SH_PLT32:
4679 #ifdef INCLUDE_SHMEDIA
4680 case R_SH_PLT_LOW16:
4681 case R_SH_PLT_MEDLOW16:
4682 case R_SH_PLT_MEDHI16:
4683 case R_SH_PLT_HI16:
4684 #endif
4685 if (h != NULL)
4687 if (h->plt.refcount > 0)
4688 h->plt.refcount -= 1;
4690 break;
4692 case R_SH_GOTPLT32:
4693 #ifdef INCLUDE_SHMEDIA
4694 case R_SH_GOTPLT_LOW16:
4695 case R_SH_GOTPLT_MEDLOW16:
4696 case R_SH_GOTPLT_MEDHI16:
4697 case R_SH_GOTPLT_HI16:
4698 case R_SH_GOTPLT10BY4:
4699 case R_SH_GOTPLT10BY8:
4700 #endif
4701 if (h != NULL)
4703 struct elf_sh_link_hash_entry *eh;
4704 eh = (struct elf_sh_link_hash_entry *) h;
4705 if (eh->gotplt_refcount > 0)
4707 eh->gotplt_refcount -= 1;
4708 if (h->plt.refcount > 0)
4709 h->plt.refcount -= 1;
4711 #ifdef INCLUDE_SHMEDIA
4712 else if (seen_stt_datalabel)
4714 if (eh->datalabel_got.refcount > 0)
4715 eh->datalabel_got.refcount -= 1;
4717 #endif
4718 else if (h->got.refcount > 0)
4719 h->got.refcount -= 1;
4721 else if (local_got_refcounts != NULL)
4723 #ifdef INCLUDE_SHMEDIA
4724 if (rel->r_addend & 1)
4726 if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4727 local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4729 else
4730 #endif
4731 if (local_got_refcounts[r_symndx] > 0)
4732 local_got_refcounts[r_symndx] -= 1;
4734 break;
4736 default:
4737 break;
4741 return TRUE;
4744 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4746 static void
4747 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
4748 struct elf_link_hash_entry *dir,
4749 struct elf_link_hash_entry *ind)
4751 struct elf_sh_link_hash_entry *edir, *eind;
4753 edir = (struct elf_sh_link_hash_entry *) dir;
4754 eind = (struct elf_sh_link_hash_entry *) ind;
4756 if (eind->dyn_relocs != NULL)
4758 if (edir->dyn_relocs != NULL)
4760 struct elf_sh_dyn_relocs **pp;
4761 struct elf_sh_dyn_relocs *p;
4763 /* Add reloc counts against the indirect sym to the direct sym
4764 list. Merge any entries against the same section. */
4765 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4767 struct elf_sh_dyn_relocs *q;
4769 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4770 if (q->sec == p->sec)
4772 q->pc_count += p->pc_count;
4773 q->count += p->count;
4774 *pp = p->next;
4775 break;
4777 if (q == NULL)
4778 pp = &p->next;
4780 *pp = edir->dyn_relocs;
4783 edir->dyn_relocs = eind->dyn_relocs;
4784 eind->dyn_relocs = NULL;
4786 edir->gotplt_refcount = eind->gotplt_refcount;
4787 eind->gotplt_refcount = 0;
4788 #ifdef INCLUDE_SHMEDIA
4789 edir->datalabel_got.refcount += eind->datalabel_got.refcount;
4790 eind->datalabel_got.refcount = 0;
4791 #endif
4793 if (ind->root.type == bfd_link_hash_indirect
4794 && dir->got.refcount <= 0)
4796 edir->tls_type = eind->tls_type;
4797 eind->tls_type = GOT_UNKNOWN;
4800 if (ind->root.type != bfd_link_hash_indirect
4801 && dir->dynamic_adjusted)
4803 /* If called to transfer flags for a weakdef during processing
4804 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
4805 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4806 dir->ref_dynamic |= ind->ref_dynamic;
4807 dir->ref_regular |= ind->ref_regular;
4808 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
4809 dir->needs_plt |= ind->needs_plt;
4811 else
4812 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
4815 static int
4816 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
4817 int is_local)
4819 if (info->shared)
4820 return r_type;
4822 switch (r_type)
4824 case R_SH_TLS_GD_32:
4825 case R_SH_TLS_IE_32:
4826 if (is_local)
4827 return R_SH_TLS_LE_32;
4828 return R_SH_TLS_IE_32;
4829 case R_SH_TLS_LD_32:
4830 return R_SH_TLS_LE_32;
4833 return r_type;
4836 /* Look through the relocs for a section during the first phase.
4837 Since we don't do .gots or .plts, we just need to consider the
4838 virtual table relocs for gc. */
4840 static bfd_boolean
4841 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
4842 const Elf_Internal_Rela *relocs)
4844 Elf_Internal_Shdr *symtab_hdr;
4845 struct elf_link_hash_entry **sym_hashes;
4846 struct elf_sh_link_hash_table *htab;
4847 const Elf_Internal_Rela *rel;
4848 const Elf_Internal_Rela *rel_end;
4849 bfd_vma *local_got_offsets;
4850 asection *sgot;
4851 asection *srelgot;
4852 asection *sreloc;
4853 unsigned int r_type;
4854 int tls_type, old_tls_type;
4856 sgot = NULL;
4857 srelgot = NULL;
4858 sreloc = NULL;
4860 if (info->relocatable)
4861 return TRUE;
4863 BFD_ASSERT (is_sh_elf (abfd));
4865 symtab_hdr = &elf_symtab_hdr (abfd);
4866 sym_hashes = elf_sym_hashes (abfd);
4868 htab = sh_elf_hash_table (info);
4869 local_got_offsets = elf_local_got_offsets (abfd);
4871 rel_end = relocs + sec->reloc_count;
4872 for (rel = relocs; rel < rel_end; rel++)
4874 struct elf_link_hash_entry *h;
4875 unsigned long r_symndx;
4876 #ifdef INCLUDE_SHMEDIA
4877 int seen_stt_datalabel = 0;
4878 #endif
4880 r_symndx = ELF32_R_SYM (rel->r_info);
4881 r_type = ELF32_R_TYPE (rel->r_info);
4883 if (r_symndx < symtab_hdr->sh_info)
4884 h = NULL;
4885 else
4887 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4888 while (h->root.type == bfd_link_hash_indirect
4889 || h->root.type == bfd_link_hash_warning)
4891 #ifdef INCLUDE_SHMEDIA
4892 seen_stt_datalabel |= h->type == STT_DATALABEL;
4893 #endif
4894 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4898 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4899 if (! info->shared
4900 && r_type == R_SH_TLS_IE_32
4901 && h != NULL
4902 && h->root.type != bfd_link_hash_undefined
4903 && h->root.type != bfd_link_hash_undefweak
4904 && (h->dynindx == -1
4905 || h->def_regular))
4906 r_type = R_SH_TLS_LE_32;
4908 /* Some relocs require a global offset table. */
4909 if (htab->sgot == NULL)
4911 switch (r_type)
4913 case R_SH_GOTPLT32:
4914 case R_SH_GOT32:
4915 case R_SH_GOTOFF:
4916 case R_SH_GOTPC:
4917 #ifdef INCLUDE_SHMEDIA
4918 case R_SH_GOTPLT_LOW16:
4919 case R_SH_GOTPLT_MEDLOW16:
4920 case R_SH_GOTPLT_MEDHI16:
4921 case R_SH_GOTPLT_HI16:
4922 case R_SH_GOTPLT10BY4:
4923 case R_SH_GOTPLT10BY8:
4924 case R_SH_GOT_LOW16:
4925 case R_SH_GOT_MEDLOW16:
4926 case R_SH_GOT_MEDHI16:
4927 case R_SH_GOT_HI16:
4928 case R_SH_GOT10BY4:
4929 case R_SH_GOT10BY8:
4930 case R_SH_GOTOFF_LOW16:
4931 case R_SH_GOTOFF_MEDLOW16:
4932 case R_SH_GOTOFF_MEDHI16:
4933 case R_SH_GOTOFF_HI16:
4934 case R_SH_GOTPC_LOW16:
4935 case R_SH_GOTPC_MEDLOW16:
4936 case R_SH_GOTPC_MEDHI16:
4937 case R_SH_GOTPC_HI16:
4938 #endif
4939 case R_SH_TLS_GD_32:
4940 case R_SH_TLS_LD_32:
4941 case R_SH_TLS_IE_32:
4942 if (htab->sgot == NULL)
4944 if (htab->root.dynobj == NULL)
4945 htab->root.dynobj = abfd;
4946 if (!create_got_section (htab->root.dynobj, info))
4947 return FALSE;
4949 break;
4951 default:
4952 break;
4956 switch (r_type)
4958 /* This relocation describes the C++ object vtable hierarchy.
4959 Reconstruct it for later use during GC. */
4960 case R_SH_GNU_VTINHERIT:
4961 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4962 return FALSE;
4963 break;
4965 /* This relocation describes which C++ vtable entries are actually
4966 used. Record for later use during GC. */
4967 case R_SH_GNU_VTENTRY:
4968 BFD_ASSERT (h != NULL);
4969 if (h != NULL
4970 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4971 return FALSE;
4972 break;
4974 case R_SH_TLS_IE_32:
4975 if (info->shared)
4976 info->flags |= DF_STATIC_TLS;
4978 /* FALLTHROUGH */
4979 force_got:
4980 case R_SH_TLS_GD_32:
4981 case R_SH_GOT32:
4982 #ifdef INCLUDE_SHMEDIA
4983 case R_SH_GOT_LOW16:
4984 case R_SH_GOT_MEDLOW16:
4985 case R_SH_GOT_MEDHI16:
4986 case R_SH_GOT_HI16:
4987 case R_SH_GOT10BY4:
4988 case R_SH_GOT10BY8:
4989 #endif
4990 switch (r_type)
4992 default:
4993 tls_type = GOT_NORMAL;
4994 break;
4995 case R_SH_TLS_GD_32:
4996 tls_type = GOT_TLS_GD;
4997 break;
4998 case R_SH_TLS_IE_32:
4999 tls_type = GOT_TLS_IE;
5000 break;
5003 if (h != NULL)
5005 #ifdef INCLUDE_SHMEDIA
5006 if (seen_stt_datalabel)
5008 struct elf_sh_link_hash_entry *eh
5009 = (struct elf_sh_link_hash_entry *) h;
5011 eh->datalabel_got.refcount += 1;
5013 else
5014 #endif
5015 h->got.refcount += 1;
5016 old_tls_type = sh_elf_hash_entry (h)->tls_type;
5018 else
5020 bfd_signed_vma *local_got_refcounts;
5022 /* This is a global offset table entry for a local
5023 symbol. */
5024 local_got_refcounts = elf_local_got_refcounts (abfd);
5025 if (local_got_refcounts == NULL)
5027 bfd_size_type size;
5029 size = symtab_hdr->sh_info;
5030 size *= sizeof (bfd_signed_vma);
5031 #ifdef INCLUDE_SHMEDIA
5032 /* Reserve space for both the datalabel and
5033 codelabel local GOT offsets. */
5034 size *= 2;
5035 #endif
5036 size += symtab_hdr->sh_info;
5037 local_got_refcounts = ((bfd_signed_vma *)
5038 bfd_zalloc (abfd, size));
5039 if (local_got_refcounts == NULL)
5040 return FALSE;
5041 elf_local_got_refcounts (abfd) = local_got_refcounts;
5042 #ifdef INCLUDE_SHMEDIA
5043 /* Take care of both the datalabel and codelabel local
5044 GOT offsets. */
5045 sh_elf_local_got_tls_type (abfd)
5046 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
5047 #else
5048 sh_elf_local_got_tls_type (abfd)
5049 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5050 #endif
5052 #ifdef INCLUDE_SHMEDIA
5053 if (rel->r_addend & 1)
5054 local_got_refcounts[symtab_hdr->sh_info + r_symndx] += 1;
5055 else
5056 #endif
5057 local_got_refcounts[r_symndx] += 1;
5058 old_tls_type = sh_elf_local_got_tls_type (abfd) [r_symndx];
5061 /* If a TLS symbol is accessed using IE at least once,
5062 there is no point to use dynamic model for it. */
5063 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
5064 && (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
5066 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
5067 tls_type = GOT_TLS_IE;
5068 else
5070 (*_bfd_error_handler)
5071 (_("%B: `%s' accessed both as normal and thread local symbol"),
5072 abfd, h->root.root.string);
5073 return FALSE;
5077 if (old_tls_type != tls_type)
5079 if (h != NULL)
5080 sh_elf_hash_entry (h)->tls_type = tls_type;
5081 else
5082 sh_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
5085 break;
5087 case R_SH_TLS_LD_32:
5088 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5089 break;
5091 case R_SH_GOTPLT32:
5092 #ifdef INCLUDE_SHMEDIA
5093 case R_SH_GOTPLT_LOW16:
5094 case R_SH_GOTPLT_MEDLOW16:
5095 case R_SH_GOTPLT_MEDHI16:
5096 case R_SH_GOTPLT_HI16:
5097 case R_SH_GOTPLT10BY4:
5098 case R_SH_GOTPLT10BY8:
5099 #endif
5100 /* If this is a local symbol, we resolve it directly without
5101 creating a procedure linkage table entry. */
5103 if (h == NULL
5104 || h->forced_local
5105 || ! info->shared
5106 || info->symbolic
5107 || h->dynindx == -1)
5108 goto force_got;
5110 h->needs_plt = 1;
5111 h->plt.refcount += 1;
5112 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5114 break;
5116 case R_SH_PLT32:
5117 #ifdef INCLUDE_SHMEDIA
5118 case R_SH_PLT_LOW16:
5119 case R_SH_PLT_MEDLOW16:
5120 case R_SH_PLT_MEDHI16:
5121 case R_SH_PLT_HI16:
5122 #endif
5123 /* This symbol requires a procedure linkage table entry. We
5124 actually build the entry in adjust_dynamic_symbol,
5125 because this might be a case of linking PIC code which is
5126 never referenced by a dynamic object, in which case we
5127 don't need to generate a procedure linkage table entry
5128 after all. */
5130 /* If this is a local symbol, we resolve it directly without
5131 creating a procedure linkage table entry. */
5132 if (h == NULL)
5133 continue;
5135 if (h->forced_local)
5136 break;
5138 h->needs_plt = 1;
5139 h->plt.refcount += 1;
5140 break;
5142 case R_SH_DIR32:
5143 case R_SH_REL32:
5144 #ifdef INCLUDE_SHMEDIA
5145 case R_SH_IMM_LOW16_PCREL:
5146 case R_SH_IMM_MEDLOW16_PCREL:
5147 case R_SH_IMM_MEDHI16_PCREL:
5148 case R_SH_IMM_HI16_PCREL:
5149 #endif
5150 if (h != NULL && ! info->shared)
5152 h->non_got_ref = 1;
5153 h->plt.refcount += 1;
5156 /* If we are creating a shared library, and this is a reloc
5157 against a global symbol, or a non PC relative reloc
5158 against a local symbol, then we need to copy the reloc
5159 into the shared library. However, if we are linking with
5160 -Bsymbolic, we do not need to copy a reloc against a
5161 global symbol which is defined in an object we are
5162 including in the link (i.e., DEF_REGULAR is set). At
5163 this point we have not seen all the input files, so it is
5164 possible that DEF_REGULAR is not set now but will be set
5165 later (it is never cleared). We account for that
5166 possibility below by storing information in the
5167 dyn_relocs field of the hash table entry. A similar
5168 situation occurs when creating shared libraries and symbol
5169 visibility changes render the symbol local.
5171 If on the other hand, we are creating an executable, we
5172 may need to keep relocations for symbols satisfied by a
5173 dynamic library if we manage to avoid copy relocs for the
5174 symbol. */
5175 if ((info->shared
5176 && (sec->flags & SEC_ALLOC) != 0
5177 && (r_type != R_SH_REL32
5178 || (h != NULL
5179 && (! info->symbolic
5180 || h->root.type == bfd_link_hash_defweak
5181 || !h->def_regular))))
5182 || (! info->shared
5183 && (sec->flags & SEC_ALLOC) != 0
5184 && h != NULL
5185 && (h->root.type == bfd_link_hash_defweak
5186 || !h->def_regular)))
5188 struct elf_sh_dyn_relocs *p;
5189 struct elf_sh_dyn_relocs **head;
5191 if (htab->root.dynobj == NULL)
5192 htab->root.dynobj = abfd;
5194 /* When creating a shared object, we must copy these
5195 reloc types into the output file. We create a reloc
5196 section in dynobj and make room for this reloc. */
5197 if (sreloc == NULL)
5199 const char *name;
5201 name = (bfd_elf_string_from_elf_section
5202 (abfd,
5203 elf_elfheader (abfd)->e_shstrndx,
5204 elf_section_data (sec)->rel_hdr.sh_name));
5205 if (name == NULL)
5206 return FALSE;
5208 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
5209 && strcmp (bfd_get_section_name (abfd, sec),
5210 name + 5) == 0);
5212 sreloc = bfd_get_section_by_name (htab->root.dynobj, name);
5213 if (sreloc == NULL)
5215 flagword flags;
5217 flags = (SEC_HAS_CONTENTS | SEC_READONLY
5218 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5219 if ((sec->flags & SEC_ALLOC) != 0)
5220 flags |= SEC_ALLOC | SEC_LOAD;
5221 sreloc = bfd_make_section_with_flags (htab->root.dynobj,
5222 name,
5223 flags);
5224 if (sreloc == NULL
5225 || ! bfd_set_section_alignment (htab->root.dynobj,
5226 sreloc, 2))
5227 return FALSE;
5229 elf_section_data (sec)->sreloc = sreloc;
5232 /* If this is a global symbol, we count the number of
5233 relocations we need for this symbol. */
5234 if (h != NULL)
5235 head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5236 else
5238 asection *s;
5239 void *vpp;
5241 /* Track dynamic relocs needed for local syms too. */
5242 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
5243 sec, r_symndx);
5244 if (s == NULL)
5245 return FALSE;
5247 vpp = &elf_section_data (s)->local_dynrel;
5248 head = (struct elf_sh_dyn_relocs **) vpp;
5251 p = *head;
5252 if (p == NULL || p->sec != sec)
5254 bfd_size_type amt = sizeof (*p);
5255 p = bfd_alloc (htab->root.dynobj, amt);
5256 if (p == NULL)
5257 return FALSE;
5258 p->next = *head;
5259 *head = p;
5260 p->sec = sec;
5261 p->count = 0;
5262 p->pc_count = 0;
5265 p->count += 1;
5266 if (r_type == R_SH_REL32
5267 #ifdef INCLUDE_SHMEDIA
5268 || r_type == R_SH_IMM_LOW16_PCREL
5269 || r_type == R_SH_IMM_MEDLOW16_PCREL
5270 || r_type == R_SH_IMM_MEDHI16_PCREL
5271 || r_type == R_SH_IMM_HI16_PCREL
5272 #endif
5274 p->pc_count += 1;
5277 break;
5279 case R_SH_TLS_LE_32:
5280 if (info->shared)
5282 (*_bfd_error_handler)
5283 (_("%B: TLS local exec code cannot be linked into shared objects"),
5284 abfd);
5285 return FALSE;
5288 break;
5290 case R_SH_TLS_LDO_32:
5291 /* Nothing to do. */
5292 break;
5294 default:
5295 break;
5299 return TRUE;
5302 #ifndef sh_elf_set_mach_from_flags
5303 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5305 static bfd_boolean
5306 sh_elf_set_mach_from_flags (bfd *abfd)
5308 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5310 if (flags >= sizeof(sh_ef_bfd_table))
5311 return FALSE;
5313 if (sh_ef_bfd_table[flags] == 0)
5314 return FALSE;
5316 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5318 return TRUE;
5322 /* Reverse table lookup for sh_ef_bfd_table[].
5323 Given a bfd MACH value from archures.c
5324 return the equivalent ELF flags from the table.
5325 Return -1 if no match is found. */
5328 sh_elf_get_flags_from_mach (unsigned long mach)
5330 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5332 for (; i>0; i--)
5333 if (sh_ef_bfd_table[i] == mach)
5334 return i;
5336 /* shouldn't get here */
5337 BFD_FAIL();
5339 return -1;
5341 #endif /* not sh_elf_set_mach_from_flags */
5343 #ifndef sh_elf_set_private_flags
5344 /* Function to keep SH specific file flags. */
5346 static bfd_boolean
5347 sh_elf_set_private_flags (bfd *abfd, flagword flags)
5349 BFD_ASSERT (! elf_flags_init (abfd)
5350 || elf_elfheader (abfd)->e_flags == flags);
5352 elf_elfheader (abfd)->e_flags = flags;
5353 elf_flags_init (abfd) = TRUE;
5354 return sh_elf_set_mach_from_flags (abfd);
5356 #endif /* not sh_elf_set_private_flags */
5358 #ifndef sh_elf_copy_private_data
5359 /* Copy backend specific data from one object module to another */
5361 static bfd_boolean
5362 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5364 /* Copy object attributes. */
5365 _bfd_elf_copy_obj_attributes (ibfd, obfd);
5367 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5368 return TRUE;
5370 return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
5372 #endif /* not sh_elf_copy_private_data */
5374 #ifndef sh_elf_merge_private_data
5376 /* This function returns the ELF architecture number that
5377 corresponds to the given arch_sh* flags. */
5380 sh_find_elf_flags (unsigned int arch_set)
5382 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5383 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5385 return sh_elf_get_flags_from_mach (bfd_mach);
5388 /* This routine initialises the elf flags when required and
5389 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5391 static bfd_boolean
5392 sh_elf_merge_private_data (bfd *ibfd, bfd *obfd)
5394 extern bfd_boolean sh_merge_bfd_arch (bfd *, bfd *);
5396 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5397 return TRUE;
5399 if (! elf_flags_init (obfd))
5401 /* This happens when ld starts out with a 'blank' output file. */
5402 elf_flags_init (obfd) = TRUE;
5403 elf_elfheader (obfd)->e_flags = EF_SH1;
5404 sh_elf_set_mach_from_flags (obfd);
5407 if (! sh_merge_bfd_arch (ibfd, obfd))
5409 _bfd_error_handler ("%B: uses instructions which are incompatible "
5410 "with instructions used in previous modules",
5411 ibfd);
5412 bfd_set_error (bfd_error_bad_value);
5413 return FALSE;
5416 elf_elfheader (obfd)->e_flags =
5417 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5419 return TRUE;
5421 #endif /* not sh_elf_merge_private_data */
5423 /* Override the generic function because we need to store sh_elf_obj_tdata
5424 as the specific tdata. We set also the machine architecture from flags
5425 here. */
5427 static bfd_boolean
5428 sh_elf_object_p (bfd *abfd)
5430 return sh_elf_set_mach_from_flags (abfd);
5433 /* Finish up dynamic symbol handling. We set the contents of various
5434 dynamic sections here. */
5436 static bfd_boolean
5437 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5438 struct elf_link_hash_entry *h,
5439 Elf_Internal_Sym *sym)
5441 struct elf_sh_link_hash_table *htab;
5443 htab = sh_elf_hash_table (info);
5445 if (h->plt.offset != (bfd_vma) -1)
5447 asection *splt;
5448 asection *sgot;
5449 asection *srel;
5451 bfd_vma plt_index;
5452 bfd_vma got_offset;
5453 Elf_Internal_Rela rel;
5454 bfd_byte *loc;
5456 /* This symbol has an entry in the procedure linkage table. Set
5457 it up. */
5459 BFD_ASSERT (h->dynindx != -1);
5461 splt = htab->splt;
5462 sgot = htab->sgotplt;
5463 srel = htab->srelplt;
5464 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
5466 /* Get the index in the procedure linkage table which
5467 corresponds to this symbol. This is the index of this symbol
5468 in all the symbols for which we are making plt entries. The
5469 first entry in the procedure linkage table is reserved. */
5470 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5472 /* Get the offset into the .got table of the entry that
5473 corresponds to this function. Each .got entry is 4 bytes.
5474 The first three are reserved. */
5475 got_offset = (plt_index + 3) * 4;
5477 #ifdef GOT_BIAS
5478 if (info->shared)
5479 got_offset -= GOT_BIAS;
5480 #endif
5482 /* Fill in the entry in the procedure linkage table. */
5483 memcpy (splt->contents + h->plt.offset,
5484 htab->plt_info->symbol_entry,
5485 htab->plt_info->symbol_entry_size);
5487 if (info->shared)
5488 install_plt_field (output_bfd, FALSE, got_offset,
5489 (splt->contents
5490 + h->plt.offset
5491 + htab->plt_info->symbol_fields.got_entry));
5492 else
5494 install_plt_field (output_bfd, FALSE,
5495 (sgot->output_section->vma
5496 + sgot->output_offset
5497 + got_offset),
5498 (splt->contents
5499 + h->plt.offset
5500 + htab->plt_info->symbol_fields.got_entry));
5501 if (htab->vxworks_p)
5503 unsigned int reachable_plts, plts_per_4k;
5504 int distance;
5506 /* Divide the PLT into groups. The first group contains
5507 REACHABLE_PLTS entries and the other groups contain
5508 PLTS_PER_4K entries. Entries in the first group can
5509 branch directly to .plt; those in later groups branch
5510 to the last element of the previous group. */
5511 /* ??? It would be better to create multiple copies of
5512 the common resolver stub. */
5513 reachable_plts = ((4096
5514 - htab->plt_info->plt0_entry_size
5515 - (htab->plt_info->symbol_fields.plt + 4))
5516 / htab->plt_info->symbol_entry_size) + 1;
5517 plts_per_4k = (4096 / htab->plt_info->symbol_entry_size);
5518 if (plt_index < reachable_plts)
5519 distance = -(h->plt.offset
5520 + htab->plt_info->symbol_fields.plt);
5521 else
5522 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
5523 * htab->plt_info->symbol_entry_size);
5525 /* Install the 'bra' with this offset. */
5526 bfd_put_16 (output_bfd,
5527 0xa000 | (0x0fff & ((distance - 4) / 2)),
5528 (splt->contents
5529 + h->plt.offset
5530 + htab->plt_info->symbol_fields.plt));
5532 else
5533 install_plt_field (output_bfd, TRUE,
5534 splt->output_section->vma + splt->output_offset,
5535 (splt->contents
5536 + h->plt.offset
5537 + htab->plt_info->symbol_fields.plt));
5540 #ifdef GOT_BIAS
5541 if (info->shared)
5542 got_offset += GOT_BIAS;
5543 #endif
5545 install_plt_field (output_bfd, FALSE,
5546 plt_index * sizeof (Elf32_External_Rela),
5547 (splt->contents
5548 + h->plt.offset
5549 + htab->plt_info->symbol_fields.reloc_offset));
5551 /* Fill in the entry in the global offset table. */
5552 bfd_put_32 (output_bfd,
5553 (splt->output_section->vma
5554 + splt->output_offset
5555 + h->plt.offset
5556 + htab->plt_info->symbol_resolve_offset),
5557 sgot->contents + got_offset);
5559 /* Fill in the entry in the .rela.plt section. */
5560 rel.r_offset = (sgot->output_section->vma
5561 + sgot->output_offset
5562 + got_offset);
5563 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
5564 rel.r_addend = 0;
5565 #ifdef GOT_BIAS
5566 rel.r_addend = GOT_BIAS;
5567 #endif
5568 loc = srel->contents + plt_index * sizeof (Elf32_External_Rela);
5569 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5571 if (htab->vxworks_p && !info->shared)
5573 /* Create the .rela.plt.unloaded relocations for this PLT entry.
5574 Begin by pointing LOC to the first such relocation. */
5575 loc = (htab->srelplt2->contents
5576 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
5578 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
5579 for the PLT entry's pointer to the .got.plt entry. */
5580 rel.r_offset = (htab->splt->output_section->vma
5581 + htab->splt->output_offset
5582 + h->plt.offset
5583 + htab->plt_info->symbol_fields.got_entry);
5584 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5585 rel.r_addend = got_offset;
5586 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5587 loc += sizeof (Elf32_External_Rela);
5589 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
5590 the .got.plt entry, which initially points to .plt. */
5591 rel.r_offset = (htab->sgotplt->output_section->vma
5592 + htab->sgotplt->output_offset
5593 + got_offset);
5594 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
5595 rel.r_addend = 0;
5596 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5599 if (!h->def_regular)
5601 /* Mark the symbol as undefined, rather than as defined in
5602 the .plt section. Leave the value alone. */
5603 sym->st_shndx = SHN_UNDEF;
5607 if (h->got.offset != (bfd_vma) -1
5608 && sh_elf_hash_entry (h)->tls_type != GOT_TLS_GD
5609 && sh_elf_hash_entry (h)->tls_type != GOT_TLS_IE)
5611 asection *sgot;
5612 asection *srel;
5613 Elf_Internal_Rela rel;
5614 bfd_byte *loc;
5616 /* This symbol has an entry in the global offset table. Set it
5617 up. */
5619 sgot = htab->sgot;
5620 srel = htab->srelgot;
5621 BFD_ASSERT (sgot != NULL && srel != NULL);
5623 rel.r_offset = (sgot->output_section->vma
5624 + sgot->output_offset
5625 + (h->got.offset &~ (bfd_vma) 1));
5627 /* If this is a static link, or it is a -Bsymbolic link and the
5628 symbol is defined locally or was forced to be local because
5629 of a version file, we just want to emit a RELATIVE reloc.
5630 The entry in the global offset table will already have been
5631 initialized in the relocate_section function. */
5632 if (info->shared
5633 && SYMBOL_REFERENCES_LOCAL (info, h))
5635 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5636 rel.r_addend = (h->root.u.def.value
5637 + h->root.u.def.section->output_section->vma
5638 + h->root.u.def.section->output_offset);
5640 else
5642 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5643 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5644 rel.r_addend = 0;
5647 loc = srel->contents;
5648 loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5649 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5652 #ifdef INCLUDE_SHMEDIA
5654 struct elf_sh_link_hash_entry *eh;
5656 eh = (struct elf_sh_link_hash_entry *) h;
5657 if (eh->datalabel_got.offset != (bfd_vma) -1)
5659 asection *sgot;
5660 asection *srel;
5661 Elf_Internal_Rela rel;
5662 bfd_byte *loc;
5664 /* This symbol has a datalabel entry in the global offset table.
5665 Set it up. */
5667 sgot = htab->sgot;
5668 srel = htab->srelgot;
5669 BFD_ASSERT (sgot != NULL && srel != NULL);
5671 rel.r_offset = (sgot->output_section->vma
5672 + sgot->output_offset
5673 + (eh->datalabel_got.offset &~ (bfd_vma) 1));
5675 /* If this is a static link, or it is a -Bsymbolic link and the
5676 symbol is defined locally or was forced to be local because
5677 of a version file, we just want to emit a RELATIVE reloc.
5678 The entry in the global offset table will already have been
5679 initialized in the relocate_section function. */
5680 if (info->shared
5681 && SYMBOL_REFERENCES_LOCAL (info, h))
5683 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5684 rel.r_addend = (h->root.u.def.value
5685 + h->root.u.def.section->output_section->vma
5686 + h->root.u.def.section->output_offset);
5688 else
5690 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents
5691 + eh->datalabel_got.offset);
5692 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5693 rel.r_addend = 0;
5696 loc = srel->contents;
5697 loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5698 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5701 #endif
5703 if (h->needs_copy)
5705 asection *s;
5706 Elf_Internal_Rela rel;
5707 bfd_byte *loc;
5709 /* This symbol needs a copy reloc. Set it up. */
5711 BFD_ASSERT (h->dynindx != -1
5712 && (h->root.type == bfd_link_hash_defined
5713 || h->root.type == bfd_link_hash_defweak));
5715 s = bfd_get_section_by_name (h->root.u.def.section->owner,
5716 ".rela.bss");
5717 BFD_ASSERT (s != NULL);
5719 rel.r_offset = (h->root.u.def.value
5720 + h->root.u.def.section->output_section->vma
5721 + h->root.u.def.section->output_offset);
5722 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
5723 rel.r_addend = 0;
5724 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5725 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5728 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
5729 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
5730 ".got" section. */
5731 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5732 || (!htab->vxworks_p && h == htab->root.hgot))
5733 sym->st_shndx = SHN_ABS;
5735 return TRUE;
5738 /* Finish up the dynamic sections. */
5740 static bfd_boolean
5741 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5743 struct elf_sh_link_hash_table *htab;
5744 asection *sgot;
5745 asection *sdyn;
5747 htab = sh_elf_hash_table (info);
5748 sgot = htab->sgotplt;
5749 sdyn = bfd_get_section_by_name (htab->root.dynobj, ".dynamic");
5751 if (htab->root.dynamic_sections_created)
5753 asection *splt;
5754 Elf32_External_Dyn *dyncon, *dynconend;
5756 BFD_ASSERT (sgot != NULL && sdyn != NULL);
5758 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5759 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5760 for (; dyncon < dynconend; dyncon++)
5762 Elf_Internal_Dyn dyn;
5763 asection *s;
5764 #ifdef INCLUDE_SHMEDIA
5765 const char *name;
5766 #endif
5768 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
5770 switch (dyn.d_tag)
5772 default:
5773 if (htab->vxworks_p
5774 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
5775 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5776 break;
5778 #ifdef INCLUDE_SHMEDIA
5779 case DT_INIT:
5780 name = info->init_function;
5781 goto get_sym;
5783 case DT_FINI:
5784 name = info->fini_function;
5785 get_sym:
5786 if (dyn.d_un.d_val != 0)
5788 struct elf_link_hash_entry *h;
5790 h = elf_link_hash_lookup (&htab->root, name,
5791 FALSE, FALSE, TRUE);
5792 if (h != NULL && (h->other & STO_SH5_ISA32))
5794 dyn.d_un.d_val |= 1;
5795 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5798 break;
5799 #endif
5801 case DT_PLTGOT:
5802 s = htab->sgot->output_section;
5803 goto get_vma;
5805 case DT_JMPREL:
5806 s = htab->srelplt->output_section;
5807 get_vma:
5808 BFD_ASSERT (s != NULL);
5809 dyn.d_un.d_ptr = s->vma;
5810 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5811 break;
5813 case DT_PLTRELSZ:
5814 s = htab->srelplt->output_section;
5815 BFD_ASSERT (s != NULL);
5816 dyn.d_un.d_val = s->size;
5817 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5818 break;
5820 case DT_RELASZ:
5821 /* My reading of the SVR4 ABI indicates that the
5822 procedure linkage table relocs (DT_JMPREL) should be
5823 included in the overall relocs (DT_RELA). This is
5824 what Solaris does. However, UnixWare can not handle
5825 that case. Therefore, we override the DT_RELASZ entry
5826 here to make it not include the JMPREL relocs. Since
5827 the linker script arranges for .rela.plt to follow all
5828 other relocation sections, we don't have to worry
5829 about changing the DT_RELA entry. */
5830 if (htab->srelplt != NULL)
5832 s = htab->srelplt->output_section;
5833 dyn.d_un.d_val -= s->size;
5835 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5836 break;
5840 /* Fill in the first entry in the procedure linkage table. */
5841 splt = htab->splt;
5842 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
5844 unsigned int i;
5846 memcpy (splt->contents,
5847 htab->plt_info->plt0_entry,
5848 htab->plt_info->plt0_entry_size);
5849 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
5850 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
5851 install_plt_field (output_bfd, FALSE,
5852 (sgot->output_section->vma
5853 + sgot->output_offset
5854 + (i * 4)),
5855 (splt->contents
5856 + htab->plt_info->plt0_got_fields[i]));
5858 if (htab->vxworks_p)
5860 /* Finalize the .rela.plt.unloaded contents. */
5861 Elf_Internal_Rela rel;
5862 bfd_byte *loc;
5864 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
5865 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
5866 loc = htab->srelplt2->contents;
5867 rel.r_offset = (splt->output_section->vma
5868 + splt->output_offset
5869 + htab->plt_info->plt0_got_fields[2]);
5870 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5871 rel.r_addend = 8;
5872 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5873 loc += sizeof (Elf32_External_Rela);
5875 /* Fix up the remaining .rela.plt.unloaded relocations.
5876 They may have the wrong symbol index for _G_O_T_ or
5877 _P_L_T_ depending on the order in which symbols were
5878 output. */
5879 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
5881 /* The PLT entry's pointer to the .got.plt slot. */
5882 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5883 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
5884 R_SH_DIR32);
5885 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5886 loc += sizeof (Elf32_External_Rela);
5888 /* The .got.plt slot's pointer to .plt. */
5889 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5890 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
5891 R_SH_DIR32);
5892 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5893 loc += sizeof (Elf32_External_Rela);
5897 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5898 really seem like the right value. */
5899 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5903 /* Fill in the first three entries in the global offset table. */
5904 if (sgot && sgot->size > 0)
5906 if (sdyn == NULL)
5907 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5908 else
5909 bfd_put_32 (output_bfd,
5910 sdyn->output_section->vma + sdyn->output_offset,
5911 sgot->contents);
5912 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5913 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5915 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5918 return TRUE;
5921 static enum elf_reloc_type_class
5922 sh_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5924 switch ((int) ELF32_R_TYPE (rela->r_info))
5926 case R_SH_RELATIVE:
5927 return reloc_class_relative;
5928 case R_SH_JMP_SLOT:
5929 return reloc_class_plt;
5930 case R_SH_COPY:
5931 return reloc_class_copy;
5932 default:
5933 return reloc_class_normal;
5937 #if !defined SH_TARGET_ALREADY_DEFINED
5938 /* Support for Linux core dump NOTE sections. */
5940 static bfd_boolean
5941 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5943 int offset;
5944 unsigned int size;
5946 switch (note->descsz)
5948 default:
5949 return FALSE;
5951 case 168: /* Linux/SH */
5952 /* pr_cursig */
5953 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5955 /* pr_pid */
5956 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5958 /* pr_reg */
5959 offset = 72;
5960 size = 92;
5962 break;
5965 /* Make a ".reg/999" section. */
5966 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5967 size, note->descpos + offset);
5970 static bfd_boolean
5971 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5973 switch (note->descsz)
5975 default:
5976 return FALSE;
5978 case 124: /* Linux/SH elf_prpsinfo */
5979 elf_tdata (abfd)->core_program
5980 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
5981 elf_tdata (abfd)->core_command
5982 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
5985 /* Note that for some reason, a spurious space is tacked
5986 onto the end of the args in some (at least one anyway)
5987 implementations, so strip it off if it exists. */
5990 char *command = elf_tdata (abfd)->core_command;
5991 int n = strlen (command);
5993 if (0 < n && command[n - 1] == ' ')
5994 command[n - 1] = '\0';
5997 return TRUE;
5999 #endif /* not SH_TARGET_ALREADY_DEFINED */
6002 /* Return address for Ith PLT stub in section PLT, for relocation REL
6003 or (bfd_vma) -1 if it should not be included. */
6005 static bfd_vma
6006 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6007 const arelent *rel ATTRIBUTE_UNUSED)
6009 const struct elf_sh_plt_info *plt_info;
6011 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6012 return plt->vma + get_plt_offset (plt_info, i);
6015 #if !defined SH_TARGET_ALREADY_DEFINED
6016 #define TARGET_BIG_SYM bfd_elf32_sh_vec
6017 #define TARGET_BIG_NAME "elf32-sh"
6018 #define TARGET_LITTLE_SYM bfd_elf32_shl_vec
6019 #define TARGET_LITTLE_NAME "elf32-shl"
6020 #endif
6022 #define ELF_ARCH bfd_arch_sh
6023 #define ELF_MACHINE_CODE EM_SH
6024 #ifdef __QNXTARGET__
6025 #define ELF_MAXPAGESIZE 0x1000
6026 #else
6027 #define ELF_MAXPAGESIZE 0x80
6028 #endif
6030 #define elf_symbol_leading_char '_'
6032 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6033 #define bfd_elf32_bfd_reloc_name_lookup \
6034 sh_elf_reloc_name_lookup
6035 #define elf_info_to_howto sh_elf_info_to_howto
6036 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6037 #define elf_backend_relocate_section sh_elf_relocate_section
6038 #define bfd_elf32_bfd_get_relocated_section_contents \
6039 sh_elf_get_relocated_section_contents
6040 #define bfd_elf32_mkobject sh_elf_mkobject
6041 #define elf_backend_object_p sh_elf_object_p
6042 #define bfd_elf32_bfd_set_private_bfd_flags \
6043 sh_elf_set_private_flags
6044 #define bfd_elf32_bfd_copy_private_bfd_data \
6045 sh_elf_copy_private_data
6046 #define bfd_elf32_bfd_merge_private_bfd_data \
6047 sh_elf_merge_private_data
6049 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6050 #define elf_backend_gc_sweep_hook sh_elf_gc_sweep_hook
6051 #define elf_backend_check_relocs sh_elf_check_relocs
6052 #define elf_backend_copy_indirect_symbol \
6053 sh_elf_copy_indirect_symbol
6054 #define elf_backend_create_dynamic_sections \
6055 sh_elf_create_dynamic_sections
6056 #define bfd_elf32_bfd_link_hash_table_create \
6057 sh_elf_link_hash_table_create
6058 #define elf_backend_adjust_dynamic_symbol \
6059 sh_elf_adjust_dynamic_symbol
6060 #define elf_backend_always_size_sections \
6061 sh_elf_always_size_sections
6062 #define elf_backend_size_dynamic_sections \
6063 sh_elf_size_dynamic_sections
6064 #define elf_backend_omit_section_dynsym \
6065 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
6066 #define elf_backend_finish_dynamic_symbol \
6067 sh_elf_finish_dynamic_symbol
6068 #define elf_backend_finish_dynamic_sections \
6069 sh_elf_finish_dynamic_sections
6070 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6071 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6073 #define elf_backend_can_gc_sections 1
6074 #define elf_backend_can_refcount 1
6075 #define elf_backend_want_got_plt 1
6076 #define elf_backend_plt_readonly 1
6077 #define elf_backend_want_plt_sym 0
6078 #define elf_backend_got_header_size 12
6080 #if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
6082 #include "elf32-target.h"
6084 /* NetBSD support. */
6085 #undef TARGET_BIG_SYM
6086 #define TARGET_BIG_SYM bfd_elf32_shnbsd_vec
6087 #undef TARGET_BIG_NAME
6088 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6089 #undef TARGET_LITTLE_SYM
6090 #define TARGET_LITTLE_SYM bfd_elf32_shlnbsd_vec
6091 #undef TARGET_LITTLE_NAME
6092 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6093 #undef ELF_MAXPAGESIZE
6094 #define ELF_MAXPAGESIZE 0x10000
6095 #undef ELF_COMMONPAGESIZE
6096 #undef elf_symbol_leading_char
6097 #define elf_symbol_leading_char 0
6098 #undef elf32_bed
6099 #define elf32_bed elf32_sh_nbsd_bed
6101 #include "elf32-target.h"
6104 /* Linux support. */
6105 #undef TARGET_BIG_SYM
6106 #define TARGET_BIG_SYM bfd_elf32_shblin_vec
6107 #undef TARGET_BIG_NAME
6108 #define TARGET_BIG_NAME "elf32-shbig-linux"
6109 #undef TARGET_LITTLE_SYM
6110 #define TARGET_LITTLE_SYM bfd_elf32_shlin_vec
6111 #undef TARGET_LITTLE_NAME
6112 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6113 #undef ELF_COMMONPAGESIZE
6114 #define ELF_COMMONPAGESIZE 0x1000
6116 #undef elf_backend_grok_prstatus
6117 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6118 #undef elf_backend_grok_psinfo
6119 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6120 #undef elf32_bed
6121 #define elf32_bed elf32_sh_lin_bed
6123 #include "elf32-target.h"
6125 #undef TARGET_BIG_SYM
6126 #define TARGET_BIG_SYM bfd_elf32_shvxworks_vec
6127 #undef TARGET_BIG_NAME
6128 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6129 #undef TARGET_LITTLE_SYM
6130 #define TARGET_LITTLE_SYM bfd_elf32_shlvxworks_vec
6131 #undef TARGET_LITTLE_NAME
6132 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6133 #undef elf32_bed
6134 #define elf32_bed elf32_sh_vxworks_bed
6136 #undef elf_backend_want_plt_sym
6137 #define elf_backend_want_plt_sym 1
6138 #undef elf_symbol_leading_char
6139 #define elf_symbol_leading_char '_'
6140 #define elf_backend_want_got_underscore 1
6141 #undef elf_backend_grok_prstatus
6142 #undef elf_backend_grok_psinfo
6143 #undef elf_backend_add_symbol_hook
6144 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6145 #undef elf_backend_link_output_symbol_hook
6146 #define elf_backend_link_output_symbol_hook \
6147 elf_vxworks_link_output_symbol_hook
6148 #undef elf_backend_emit_relocs
6149 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6150 #undef elf_backend_final_write_processing
6151 #define elf_backend_final_write_processing \
6152 elf_vxworks_final_write_processing
6153 #undef ELF_MAXPAGESIZE
6154 #define ELF_MAXPAGESIZE 0x1000
6155 #undef ELF_COMMONPAGESIZE
6157 #include "elf32-target.h"
6159 #endif /* neither INCLUDE_SHMEDIA nor SH_TARGET_ALREADY_DEFINED */