bfd/ChangeLog
[binutils.git] / bfd / elf32-sh.c
blob23ee06a1d02ebaca0548e1ff20a497019626149c
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, 2009, 2010 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 plt_index)
2094 return info->plt0_entry_size + (plt_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_DATA)
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_DATA);
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 cache. */
2191 struct sym_cache sym_cache;
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 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2219 == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
2221 /* Create an entry in an sh ELF linker hash table. */
2223 static struct bfd_hash_entry *
2224 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2225 struct bfd_hash_table *table,
2226 const char *string)
2228 struct elf_sh_link_hash_entry *ret =
2229 (struct elf_sh_link_hash_entry *) entry;
2231 /* Allocate the structure if it has not already been allocated by a
2232 subclass. */
2233 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2234 ret = ((struct elf_sh_link_hash_entry *)
2235 bfd_hash_allocate (table,
2236 sizeof (struct elf_sh_link_hash_entry)));
2237 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2238 return (struct bfd_hash_entry *) ret;
2240 /* Call the allocation method of the superclass. */
2241 ret = ((struct elf_sh_link_hash_entry *)
2242 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2243 table, string));
2244 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2246 ret->dyn_relocs = NULL;
2247 ret->gotplt_refcount = 0;
2248 #ifdef INCLUDE_SHMEDIA
2249 ret->datalabel_got.refcount = ret->root.got.refcount;
2250 #endif
2251 ret->tls_type = GOT_UNKNOWN;
2254 return (struct bfd_hash_entry *) ret;
2257 /* Create an sh ELF linker hash table. */
2259 static struct bfd_link_hash_table *
2260 sh_elf_link_hash_table_create (bfd *abfd)
2262 struct elf_sh_link_hash_table *ret;
2263 bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
2265 ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt);
2266 if (ret == (struct elf_sh_link_hash_table *) NULL)
2267 return NULL;
2269 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2270 sh_elf_link_hash_newfunc,
2271 sizeof (struct elf_sh_link_hash_entry),
2272 SH_ELF_DATA))
2274 free (ret);
2275 return NULL;
2278 ret->sgot = NULL;
2279 ret->sgotplt = NULL;
2280 ret->srelgot = NULL;
2281 ret->splt = NULL;
2282 ret->srelplt = NULL;
2283 ret->sdynbss = NULL;
2284 ret->srelbss = NULL;
2285 ret->srelplt2 = NULL;
2286 ret->sym_cache.abfd = NULL;
2287 ret->tls_ldm_got.refcount = 0;
2288 ret->plt_info = NULL;
2289 ret->vxworks_p = vxworks_object_p (abfd);
2291 return &ret->root.root;
2294 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2295 shortcuts to them in our hash table. */
2297 static bfd_boolean
2298 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2300 struct elf_sh_link_hash_table *htab;
2302 if (! _bfd_elf_create_got_section (dynobj, info))
2303 return FALSE;
2305 htab = sh_elf_hash_table (info);
2306 if (htab == NULL)
2307 return FALSE;
2309 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2310 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2311 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2312 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
2313 abort ();
2314 return TRUE;
2317 /* Create dynamic sections when linking against a dynamic object. */
2319 static bfd_boolean
2320 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2322 struct elf_sh_link_hash_table *htab;
2323 flagword flags, pltflags;
2324 asection *s;
2325 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2326 int ptralign = 0;
2328 switch (bed->s->arch_size)
2330 case 32:
2331 ptralign = 2;
2332 break;
2334 case 64:
2335 ptralign = 3;
2336 break;
2338 default:
2339 bfd_set_error (bfd_error_bad_value);
2340 return FALSE;
2343 htab = sh_elf_hash_table (info);
2344 if (htab == NULL)
2345 return FALSE;
2347 if (htab->root.dynamic_sections_created)
2348 return TRUE;
2350 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2351 .rel[a].bss sections. */
2353 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2354 | SEC_LINKER_CREATED);
2356 pltflags = flags;
2357 pltflags |= SEC_CODE;
2358 if (bed->plt_not_loaded)
2359 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2360 if (bed->plt_readonly)
2361 pltflags |= SEC_READONLY;
2363 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
2364 htab->splt = s;
2365 if (s == NULL
2366 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2367 return FALSE;
2369 if (bed->want_plt_sym)
2371 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2372 .plt section. */
2373 struct elf_link_hash_entry *h;
2374 struct bfd_link_hash_entry *bh = NULL;
2376 if (! (_bfd_generic_link_add_one_symbol
2377 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2378 (bfd_vma) 0, (const char *) NULL, FALSE,
2379 get_elf_backend_data (abfd)->collect, &bh)))
2380 return FALSE;
2382 h = (struct elf_link_hash_entry *) bh;
2383 h->def_regular = 1;
2384 h->type = STT_OBJECT;
2385 htab->root.hplt = h;
2387 if (info->shared
2388 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2389 return FALSE;
2392 s = bfd_make_section_with_flags (abfd,
2393 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
2394 flags | SEC_READONLY);
2395 htab->srelplt = s;
2396 if (s == NULL
2397 || ! bfd_set_section_alignment (abfd, s, ptralign))
2398 return FALSE;
2400 if (htab->sgot == NULL
2401 && !create_got_section (abfd, info))
2402 return FALSE;
2405 const char *secname;
2406 char *relname;
2407 flagword secflags;
2408 asection *sec;
2410 for (sec = abfd->sections; sec; sec = sec->next)
2412 secflags = bfd_get_section_flags (abfd, sec);
2413 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
2414 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
2415 continue;
2416 secname = bfd_get_section_name (abfd, sec);
2417 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
2418 strcpy (relname, ".rela");
2419 strcat (relname, secname);
2420 if (bfd_get_section_by_name (abfd, secname))
2421 continue;
2422 s = bfd_make_section_with_flags (abfd, relname,
2423 flags | SEC_READONLY);
2424 if (s == NULL
2425 || ! bfd_set_section_alignment (abfd, s, ptralign))
2426 return FALSE;
2430 if (bed->want_dynbss)
2432 /* The .dynbss section is a place to put symbols which are defined
2433 by dynamic objects, are referenced by regular objects, and are
2434 not functions. We must allocate space for them in the process
2435 image and use a R_*_COPY reloc to tell the dynamic linker to
2436 initialize them at run time. The linker script puts the .dynbss
2437 section into the .bss section of the final image. */
2438 s = bfd_make_section_with_flags (abfd, ".dynbss",
2439 SEC_ALLOC | SEC_LINKER_CREATED);
2440 htab->sdynbss = s;
2441 if (s == NULL)
2442 return FALSE;
2444 /* The .rel[a].bss section holds copy relocs. This section is not
2445 normally needed. We need to create it here, though, so that the
2446 linker will map it to an output section. We can't just create it
2447 only if we need it, because we will not know whether we need it
2448 until we have seen all the input files, and the first time the
2449 main linker code calls BFD after examining all the input files
2450 (size_dynamic_sections) the input sections have already been
2451 mapped to the output sections. If the section turns out not to
2452 be needed, we can discard it later. We will never need this
2453 section when generating a shared object, since they do not use
2454 copy relocs. */
2455 if (! info->shared)
2457 s = bfd_make_section_with_flags (abfd,
2458 (bed->default_use_rela_p
2459 ? ".rela.bss" : ".rel.bss"),
2460 flags | SEC_READONLY);
2461 htab->srelbss = s;
2462 if (s == NULL
2463 || ! bfd_set_section_alignment (abfd, s, ptralign))
2464 return FALSE;
2468 if (htab->vxworks_p)
2470 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2471 return FALSE;
2474 return TRUE;
2477 /* Adjust a symbol defined by a dynamic object and referenced by a
2478 regular object. The current definition is in some section of the
2479 dynamic object, but we're not including those sections. We have to
2480 change the definition to something the rest of the link can
2481 understand. */
2483 static bfd_boolean
2484 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2485 struct elf_link_hash_entry *h)
2487 struct elf_sh_link_hash_table *htab;
2488 struct elf_sh_link_hash_entry *eh;
2489 struct elf_sh_dyn_relocs *p;
2490 asection *s;
2492 htab = sh_elf_hash_table (info);
2493 if (htab == NULL)
2494 return FALSE;
2496 /* Make sure we know what is going on here. */
2497 BFD_ASSERT (htab->root.dynobj != NULL
2498 && (h->needs_plt
2499 || h->u.weakdef != NULL
2500 || (h->def_dynamic
2501 && h->ref_regular
2502 && !h->def_regular)));
2504 /* If this is a function, put it in the procedure linkage table. We
2505 will fill in the contents of the procedure linkage table later,
2506 when we know the address of the .got section. */
2507 if (h->type == STT_FUNC
2508 || h->needs_plt)
2510 if (h->plt.refcount <= 0
2511 || SYMBOL_CALLS_LOCAL (info, h)
2512 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2513 && h->root.type == bfd_link_hash_undefweak))
2515 /* This case can occur if we saw a PLT reloc in an input
2516 file, but the symbol was never referred to by a dynamic
2517 object. In such a case, we don't actually need to build
2518 a procedure linkage table, and we can just do a REL32
2519 reloc instead. */
2520 h->plt.offset = (bfd_vma) -1;
2521 h->needs_plt = 0;
2524 return TRUE;
2526 else
2527 h->plt.offset = (bfd_vma) -1;
2529 /* If this is a weak symbol, and there is a real definition, the
2530 processor independent code will have arranged for us to see the
2531 real definition first, and we can just use the same value. */
2532 if (h->u.weakdef != NULL)
2534 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2535 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2536 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2537 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2538 if (info->nocopyreloc)
2539 h->non_got_ref = h->u.weakdef->non_got_ref;
2540 return TRUE;
2543 /* This is a reference to a symbol defined by a dynamic object which
2544 is not a function. */
2546 /* If we are creating a shared library, we must presume that the
2547 only references to the symbol are via the global offset table.
2548 For such cases we need not do anything here; the relocations will
2549 be handled correctly by relocate_section. */
2550 if (info->shared)
2551 return TRUE;
2553 /* If there are no references to this symbol that do not use the
2554 GOT, we don't need to generate a copy reloc. */
2555 if (!h->non_got_ref)
2556 return TRUE;
2558 /* If -z nocopyreloc was given, we won't generate them either. */
2559 if (info->nocopyreloc)
2561 h->non_got_ref = 0;
2562 return TRUE;
2565 eh = (struct elf_sh_link_hash_entry *) h;
2566 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2568 s = p->sec->output_section;
2569 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2570 break;
2573 /* If we didn't find any dynamic relocs in sections which needs the
2574 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2575 the copy reloc. */
2576 if (p == NULL)
2578 h->non_got_ref = 0;
2579 return TRUE;
2582 if (h->size == 0)
2584 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2585 h->root.root.string);
2586 return TRUE;
2589 /* We must allocate the symbol in our .dynbss section, which will
2590 become part of the .bss section of the executable. There will be
2591 an entry for this symbol in the .dynsym section. The dynamic
2592 object will contain position independent code, so all references
2593 from the dynamic object to this symbol will go through the global
2594 offset table. The dynamic linker will use the .dynsym entry to
2595 determine the address it must put in the global offset table, so
2596 both the dynamic object and the regular object will refer to the
2597 same memory location for the variable. */
2599 s = htab->sdynbss;
2600 BFD_ASSERT (s != NULL);
2602 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2603 copy the initial value out of the dynamic object and into the
2604 runtime process image. We need to remember the offset into the
2605 .rela.bss section we are going to use. */
2606 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2608 asection *srel;
2610 srel = htab->srelbss;
2611 BFD_ASSERT (srel != NULL);
2612 srel->size += sizeof (Elf32_External_Rela);
2613 h->needs_copy = 1;
2616 return _bfd_elf_adjust_dynamic_copy (h, s);
2619 /* Allocate space in .plt, .got and associated reloc sections for
2620 dynamic relocs. */
2622 static bfd_boolean
2623 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2625 struct bfd_link_info *info;
2626 struct elf_sh_link_hash_table *htab;
2627 struct elf_sh_link_hash_entry *eh;
2628 struct elf_sh_dyn_relocs *p;
2630 if (h->root.type == bfd_link_hash_indirect)
2631 return TRUE;
2633 if (h->root.type == bfd_link_hash_warning)
2634 /* When warning symbols are created, they **replace** the "real"
2635 entry in the hash table, thus we never get to see the real
2636 symbol in a hash traversal. So look at it now. */
2637 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2639 info = (struct bfd_link_info *) inf;
2640 htab = sh_elf_hash_table (info);
2641 if (htab == NULL)
2642 return FALSE;
2644 eh = (struct elf_sh_link_hash_entry *) h;
2645 if ((h->got.refcount > 0
2646 || h->forced_local)
2647 && eh->gotplt_refcount > 0)
2649 /* The symbol has been forced local, or we have some direct got refs,
2650 so treat all the gotplt refs as got refs. */
2651 h->got.refcount += eh->gotplt_refcount;
2652 if (h->plt.refcount >= eh->gotplt_refcount)
2653 h->plt.refcount -= eh->gotplt_refcount;
2656 if (htab->root.dynamic_sections_created
2657 && h->plt.refcount > 0
2658 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2659 || h->root.type != bfd_link_hash_undefweak))
2661 /* Make sure this symbol is output as a dynamic symbol.
2662 Undefined weak syms won't yet be marked as dynamic. */
2663 if (h->dynindx == -1
2664 && !h->forced_local)
2666 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2667 return FALSE;
2670 if (info->shared
2671 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2673 asection *s = htab->splt;
2675 /* If this is the first .plt entry, make room for the special
2676 first entry. */
2677 if (s->size == 0)
2678 s->size += htab->plt_info->plt0_entry_size;
2680 h->plt.offset = s->size;
2682 /* If this symbol is not defined in a regular file, and we are
2683 not generating a shared library, then set the symbol to this
2684 location in the .plt. This is required to make function
2685 pointers compare as equal between the normal executable and
2686 the shared library. */
2687 if (! info->shared
2688 && !h->def_regular)
2690 h->root.u.def.section = s;
2691 h->root.u.def.value = h->plt.offset;
2694 /* Make room for this entry. */
2695 s->size += htab->plt_info->symbol_entry_size;
2697 /* We also need to make an entry in the .got.plt section, which
2698 will be placed in the .got section by the linker script. */
2699 htab->sgotplt->size += 4;
2701 /* We also need to make an entry in the .rel.plt section. */
2702 htab->srelplt->size += sizeof (Elf32_External_Rela);
2704 if (htab->vxworks_p && !info->shared)
2706 /* VxWorks executables have a second set of relocations
2707 for each PLT entry. They go in a separate relocation
2708 section, which is processed by the kernel loader. */
2710 /* There is a relocation for the initial PLT entry:
2711 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2712 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2713 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2715 /* There are two extra relocations for each subsequent
2716 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2717 and an R_SH_DIR32 relocation for the PLT entry. */
2718 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2721 else
2723 h->plt.offset = (bfd_vma) -1;
2724 h->needs_plt = 0;
2727 else
2729 h->plt.offset = (bfd_vma) -1;
2730 h->needs_plt = 0;
2733 if (h->got.refcount > 0)
2735 asection *s;
2736 bfd_boolean dyn;
2737 int tls_type = sh_elf_hash_entry (h)->tls_type;
2739 /* Make sure this symbol is output as a dynamic symbol.
2740 Undefined weak syms won't yet be marked as dynamic. */
2741 if (h->dynindx == -1
2742 && !h->forced_local)
2744 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2745 return FALSE;
2748 s = htab->sgot;
2749 h->got.offset = s->size;
2750 s->size += 4;
2751 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2752 if (tls_type == GOT_TLS_GD)
2753 s->size += 4;
2754 dyn = htab->root.dynamic_sections_created;
2755 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2756 R_SH_TLS_GD needs one if local symbol and two if global. */
2757 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2758 || (tls_type == GOT_TLS_IE && dyn))
2759 htab->srelgot->size += sizeof (Elf32_External_Rela);
2760 else if (tls_type == GOT_TLS_GD)
2761 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2762 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2763 || h->root.type != bfd_link_hash_undefweak)
2764 && (info->shared
2765 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2766 htab->srelgot->size += sizeof (Elf32_External_Rela);
2768 else
2769 h->got.offset = (bfd_vma) -1;
2771 #ifdef INCLUDE_SHMEDIA
2772 if (eh->datalabel_got.refcount > 0)
2774 asection *s;
2775 bfd_boolean dyn;
2777 /* Make sure this symbol is output as a dynamic symbol.
2778 Undefined weak syms won't yet be marked as dynamic. */
2779 if (h->dynindx == -1
2780 && !h->forced_local)
2782 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2783 return FALSE;
2786 s = htab->sgot;
2787 eh->datalabel_got.offset = s->size;
2788 s->size += 4;
2789 dyn = htab->root.dynamic_sections_created;
2790 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2791 htab->srelgot->size += sizeof (Elf32_External_Rela);
2793 else
2794 eh->datalabel_got.offset = (bfd_vma) -1;
2795 #endif
2797 if (eh->dyn_relocs == NULL)
2798 return TRUE;
2800 /* In the shared -Bsymbolic case, discard space allocated for
2801 dynamic pc-relative relocs against symbols which turn out to be
2802 defined in regular objects. For the normal shared case, discard
2803 space for pc-relative relocs that have become local due to symbol
2804 visibility changes. */
2806 if (info->shared)
2808 if (SYMBOL_CALLS_LOCAL (info, h))
2810 struct elf_sh_dyn_relocs **pp;
2812 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2814 p->count -= p->pc_count;
2815 p->pc_count = 0;
2816 if (p->count == 0)
2817 *pp = p->next;
2818 else
2819 pp = &p->next;
2823 if (htab->vxworks_p)
2825 struct elf_sh_dyn_relocs **pp;
2827 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2829 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2830 *pp = p->next;
2831 else
2832 pp = &p->next;
2836 /* Also discard relocs on undefined weak syms with non-default
2837 visibility. */
2838 if (eh->dyn_relocs != NULL
2839 && h->root.type == bfd_link_hash_undefweak)
2841 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2842 eh->dyn_relocs = NULL;
2844 /* Make sure undefined weak symbols are output as a dynamic
2845 symbol in PIEs. */
2846 else if (h->dynindx == -1
2847 && !h->forced_local)
2849 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2850 return FALSE;
2854 else
2856 /* For the non-shared case, discard space for relocs against
2857 symbols which turn out to need copy relocs or are not
2858 dynamic. */
2860 if (!h->non_got_ref
2861 && ((h->def_dynamic
2862 && !h->def_regular)
2863 || (htab->root.dynamic_sections_created
2864 && (h->root.type == bfd_link_hash_undefweak
2865 || h->root.type == bfd_link_hash_undefined))))
2867 /* Make sure this symbol is output as a dynamic symbol.
2868 Undefined weak syms won't yet be marked as dynamic. */
2869 if (h->dynindx == -1
2870 && !h->forced_local)
2872 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2873 return FALSE;
2876 /* If that succeeded, we know we'll be keeping all the
2877 relocs. */
2878 if (h->dynindx != -1)
2879 goto keep;
2882 eh->dyn_relocs = NULL;
2884 keep: ;
2887 /* Finally, allocate space. */
2888 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2890 asection *sreloc = elf_section_data (p->sec)->sreloc;
2891 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2894 return TRUE;
2897 /* Find any dynamic relocs that apply to read-only sections. */
2899 static bfd_boolean
2900 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2902 struct elf_sh_link_hash_entry *eh;
2903 struct elf_sh_dyn_relocs *p;
2905 if (h->root.type == bfd_link_hash_warning)
2906 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2908 eh = (struct elf_sh_link_hash_entry *) h;
2909 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2911 asection *s = p->sec->output_section;
2913 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2915 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2917 info->flags |= DF_TEXTREL;
2919 /* Not an error, just cut short the traversal. */
2920 return FALSE;
2923 return TRUE;
2926 /* This function is called after all the input files have been read,
2927 and the input sections have been assigned to output sections.
2928 It's a convenient place to determine the PLT style. */
2930 static bfd_boolean
2931 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2933 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared);
2934 return TRUE;
2937 /* Set the sizes of the dynamic sections. */
2939 static bfd_boolean
2940 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2941 struct bfd_link_info *info)
2943 struct elf_sh_link_hash_table *htab;
2944 bfd *dynobj;
2945 asection *s;
2946 bfd_boolean relocs;
2947 bfd *ibfd;
2949 htab = sh_elf_hash_table (info);
2950 if (htab == NULL)
2951 return FALSE;
2953 dynobj = htab->root.dynobj;
2954 BFD_ASSERT (dynobj != NULL);
2956 if (htab->root.dynamic_sections_created)
2958 /* Set the contents of the .interp section to the interpreter. */
2959 if (info->executable)
2961 s = bfd_get_section_by_name (dynobj, ".interp");
2962 BFD_ASSERT (s != NULL);
2963 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2964 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2968 /* Set up .got offsets for local syms, and space for local dynamic
2969 relocs. */
2970 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2972 bfd_signed_vma *local_got;
2973 bfd_signed_vma *end_local_got;
2974 char *local_tls_type;
2975 bfd_size_type locsymcount;
2976 Elf_Internal_Shdr *symtab_hdr;
2977 asection *srel;
2979 if (! is_sh_elf (ibfd))
2980 continue;
2982 for (s = ibfd->sections; s != NULL; s = s->next)
2984 struct elf_sh_dyn_relocs *p;
2986 for (p = ((struct elf_sh_dyn_relocs *)
2987 elf_section_data (s)->local_dynrel);
2988 p != NULL;
2989 p = p->next)
2991 if (! bfd_is_abs_section (p->sec)
2992 && bfd_is_abs_section (p->sec->output_section))
2994 /* Input section has been discarded, either because
2995 it is a copy of a linkonce section or due to
2996 linker script /DISCARD/, so we'll be discarding
2997 the relocs too. */
2999 else if (htab->vxworks_p
3000 && strcmp (p->sec->output_section->name,
3001 ".tls_vars") == 0)
3003 /* Relocations in vxworks .tls_vars sections are
3004 handled specially by the loader. */
3006 else if (p->count != 0)
3008 srel = elf_section_data (p->sec)->sreloc;
3009 srel->size += p->count * sizeof (Elf32_External_Rela);
3010 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3011 info->flags |= DF_TEXTREL;
3016 local_got = elf_local_got_refcounts (ibfd);
3017 if (!local_got)
3018 continue;
3020 symtab_hdr = &elf_symtab_hdr (ibfd);
3021 locsymcount = symtab_hdr->sh_info;
3022 #ifdef INCLUDE_SHMEDIA
3023 /* Count datalabel local GOT. */
3024 locsymcount *= 2;
3025 #endif
3026 end_local_got = local_got + locsymcount;
3027 local_tls_type = sh_elf_local_got_tls_type (ibfd);
3028 s = htab->sgot;
3029 srel = htab->srelgot;
3030 for (; local_got < end_local_got; ++local_got)
3032 if (*local_got > 0)
3034 *local_got = s->size;
3035 s->size += 4;
3036 if (*local_tls_type == GOT_TLS_GD)
3037 s->size += 4;
3038 if (info->shared)
3039 srel->size += sizeof (Elf32_External_Rela);
3041 else
3042 *local_got = (bfd_vma) -1;
3043 ++local_tls_type;
3047 if (htab->tls_ldm_got.refcount > 0)
3049 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3050 relocs. */
3051 htab->tls_ldm_got.offset = htab->sgot->size;
3052 htab->sgot->size += 8;
3053 htab->srelgot->size += sizeof (Elf32_External_Rela);
3055 else
3056 htab->tls_ldm_got.offset = -1;
3058 /* Allocate global sym .plt and .got entries, and space for global
3059 sym dynamic relocs. */
3060 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3062 /* We now have determined the sizes of the various dynamic sections.
3063 Allocate memory for them. */
3064 relocs = FALSE;
3065 for (s = dynobj->sections; s != NULL; s = s->next)
3067 if ((s->flags & SEC_LINKER_CREATED) == 0)
3068 continue;
3070 if (s == htab->splt
3071 || s == htab->sgot
3072 || s == htab->sgotplt
3073 || s == htab->sdynbss)
3075 /* Strip this section if we don't need it; see the
3076 comment below. */
3078 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3080 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
3081 relocs = TRUE;
3083 /* We use the reloc_count field as a counter if we need
3084 to copy relocs into the output file. */
3085 s->reloc_count = 0;
3087 else
3089 /* It's not one of our sections, so don't allocate space. */
3090 continue;
3093 if (s->size == 0)
3095 /* If we don't need this section, strip it from the
3096 output file. This is mostly to handle .rela.bss and
3097 .rela.plt. We must create both sections in
3098 create_dynamic_sections, because they must be created
3099 before the linker maps input sections to output
3100 sections. The linker does that before
3101 adjust_dynamic_symbol is called, and it is that
3102 function which decides whether anything needs to go
3103 into these sections. */
3105 s->flags |= SEC_EXCLUDE;
3106 continue;
3109 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3110 continue;
3112 /* Allocate memory for the section contents. We use bfd_zalloc
3113 here in case unused entries are not reclaimed before the
3114 section's contents are written out. This should not happen,
3115 but this way if it does, we get a R_SH_NONE reloc instead
3116 of garbage. */
3117 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3118 if (s->contents == NULL)
3119 return FALSE;
3122 if (htab->root.dynamic_sections_created)
3124 /* Add some entries to the .dynamic section. We fill in the
3125 values later, in sh_elf_finish_dynamic_sections, but we
3126 must add the entries now so that we get the correct size for
3127 the .dynamic section. The DT_DEBUG entry is filled in by the
3128 dynamic linker and used by the debugger. */
3129 #define add_dynamic_entry(TAG, VAL) \
3130 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3132 if (info->executable)
3134 if (! add_dynamic_entry (DT_DEBUG, 0))
3135 return FALSE;
3138 if (htab->splt->size != 0)
3140 if (! add_dynamic_entry (DT_PLTGOT, 0)
3141 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3142 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3143 || ! add_dynamic_entry (DT_JMPREL, 0))
3144 return FALSE;
3147 if (relocs)
3149 if (! add_dynamic_entry (DT_RELA, 0)
3150 || ! add_dynamic_entry (DT_RELASZ, 0)
3151 || ! add_dynamic_entry (DT_RELAENT,
3152 sizeof (Elf32_External_Rela)))
3153 return FALSE;
3155 /* If any dynamic relocs apply to a read-only section,
3156 then we need a DT_TEXTREL entry. */
3157 if ((info->flags & DF_TEXTREL) == 0)
3158 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, info);
3160 if ((info->flags & DF_TEXTREL) != 0)
3162 if (! add_dynamic_entry (DT_TEXTREL, 0))
3163 return FALSE;
3166 if (htab->vxworks_p
3167 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3168 return FALSE;
3170 #undef add_dynamic_entry
3172 return TRUE;
3175 /* Relocate an SH ELF section. */
3177 static bfd_boolean
3178 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3179 bfd *input_bfd, asection *input_section,
3180 bfd_byte *contents, Elf_Internal_Rela *relocs,
3181 Elf_Internal_Sym *local_syms,
3182 asection **local_sections)
3184 struct elf_sh_link_hash_table *htab;
3185 Elf_Internal_Shdr *symtab_hdr;
3186 struct elf_link_hash_entry **sym_hashes;
3187 Elf_Internal_Rela *rel, *relend;
3188 bfd *dynobj;
3189 bfd_vma *local_got_offsets;
3190 asection *sgot;
3191 asection *sgotplt;
3192 asection *splt;
3193 asection *sreloc;
3194 asection *srelgot;
3195 bfd_boolean is_vxworks_tls;
3197 BFD_ASSERT (is_sh_elf (input_bfd));
3199 htab = sh_elf_hash_table (info);
3200 if (htab == NULL)
3201 return FALSE;
3202 symtab_hdr = &elf_symtab_hdr (input_bfd);
3203 sym_hashes = elf_sym_hashes (input_bfd);
3204 dynobj = htab->root.dynobj;
3205 local_got_offsets = elf_local_got_offsets (input_bfd);
3207 sgot = htab->sgot;
3208 sgotplt = htab->sgotplt;
3209 splt = htab->splt;
3210 sreloc = NULL;
3211 srelgot = NULL;
3212 /* We have to handle relocations in vxworks .tls_vars sections
3213 specially, because the dynamic loader is 'weird'. */
3214 is_vxworks_tls = (htab->vxworks_p && info->shared
3215 && !strcmp (input_section->output_section->name,
3216 ".tls_vars"));
3218 rel = relocs;
3219 relend = relocs + input_section->reloc_count;
3220 for (; rel < relend; rel++)
3222 int r_type;
3223 reloc_howto_type *howto;
3224 unsigned long r_symndx;
3225 Elf_Internal_Sym *sym;
3226 asection *sec;
3227 struct elf_link_hash_entry *h;
3228 bfd_vma relocation;
3229 bfd_vma addend = (bfd_vma) 0;
3230 bfd_reloc_status_type r;
3231 int seen_stt_datalabel = 0;
3232 bfd_vma off;
3233 int tls_type;
3235 r_symndx = ELF32_R_SYM (rel->r_info);
3237 r_type = ELF32_R_TYPE (rel->r_info);
3239 /* Many of the relocs are only used for relaxing, and are
3240 handled entirely by the relaxation code. */
3241 if (r_type >= (int) R_SH_GNU_VTINHERIT
3242 && r_type <= (int) R_SH_LABEL)
3243 continue;
3244 if (r_type == (int) R_SH_NONE)
3245 continue;
3247 if (r_type < 0
3248 || r_type >= R_SH_max
3249 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3250 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3251 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3252 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3253 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3254 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3255 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3256 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3257 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3258 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2))
3260 bfd_set_error (bfd_error_bad_value);
3261 return FALSE;
3264 howto = get_howto_table (output_bfd) + r_type;
3266 /* For relocs that aren't partial_inplace, we get the addend from
3267 the relocation. */
3268 if (! howto->partial_inplace)
3269 addend = rel->r_addend;
3271 h = NULL;
3272 sym = NULL;
3273 sec = NULL;
3274 if (r_symndx < symtab_hdr->sh_info)
3276 sym = local_syms + r_symndx;
3277 sec = local_sections[r_symndx];
3278 relocation = (sec->output_section->vma
3279 + sec->output_offset
3280 + sym->st_value);
3281 /* A local symbol never has STO_SH5_ISA32, so we don't need
3282 datalabel processing here. Make sure this does not change
3283 without notice. */
3284 if ((sym->st_other & STO_SH5_ISA32) != 0)
3285 ((*info->callbacks->reloc_dangerous)
3286 (info,
3287 _("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
3288 input_bfd, input_section, rel->r_offset));
3290 if (sec != NULL && elf_discarded_section (sec))
3291 /* Handled below. */
3293 else if (info->relocatable)
3295 /* This is a relocatable link. We don't have to change
3296 anything, unless the reloc is against a section symbol,
3297 in which case we have to adjust according to where the
3298 section symbol winds up in the output section. */
3299 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3301 if (! howto->partial_inplace)
3303 /* For relocations with the addend in the
3304 relocation, we need just to update the addend.
3305 All real relocs are of type partial_inplace; this
3306 code is mostly for completeness. */
3307 rel->r_addend += sec->output_offset;
3309 continue;
3312 /* Relocs of type partial_inplace need to pick up the
3313 contents in the contents and add the offset resulting
3314 from the changed location of the section symbol.
3315 Using _bfd_final_link_relocate (e.g. goto
3316 final_link_relocate) here would be wrong, because
3317 relocations marked pc_relative would get the current
3318 location subtracted, and we must only do that at the
3319 final link. */
3320 r = _bfd_relocate_contents (howto, input_bfd,
3321 sec->output_offset
3322 + sym->st_value,
3323 contents + rel->r_offset);
3324 goto relocation_done;
3327 continue;
3329 else if (! howto->partial_inplace)
3331 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3332 addend = rel->r_addend;
3334 else if ((sec->flags & SEC_MERGE)
3335 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3337 asection *msec;
3339 if (howto->rightshift || howto->src_mask != 0xffffffff)
3341 (*_bfd_error_handler)
3342 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
3343 input_bfd, input_section,
3344 (long) rel->r_offset, howto->name);
3345 return FALSE;
3348 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3349 msec = sec;
3350 addend =
3351 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3352 - relocation;
3353 addend += msec->output_section->vma + msec->output_offset;
3354 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3355 addend = 0;
3358 else
3360 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3362 relocation = 0;
3363 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3364 while (h->root.type == bfd_link_hash_indirect
3365 || h->root.type == bfd_link_hash_warning)
3367 #ifdef INCLUDE_SHMEDIA
3368 /* If the reference passes a symbol marked with
3369 STT_DATALABEL, then any STO_SH5_ISA32 on the final value
3370 doesn't count. */
3371 seen_stt_datalabel |= h->type == STT_DATALABEL;
3372 #endif
3373 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3375 if (h->root.type == bfd_link_hash_defined
3376 || h->root.type == bfd_link_hash_defweak)
3378 bfd_boolean dyn;
3380 dyn = htab->root.dynamic_sections_created;
3381 sec = h->root.u.def.section;
3382 /* In these cases, we don't need the relocation value.
3383 We check specially because in some obscure cases
3384 sec->output_section will be NULL. */
3385 if (r_type == R_SH_GOTPC
3386 || r_type == R_SH_GOTPC_LOW16
3387 || r_type == R_SH_GOTPC_MEDLOW16
3388 || r_type == R_SH_GOTPC_MEDHI16
3389 || r_type == R_SH_GOTPC_HI16
3390 || ((r_type == R_SH_PLT32
3391 || r_type == R_SH_PLT_LOW16
3392 || r_type == R_SH_PLT_MEDLOW16
3393 || r_type == R_SH_PLT_MEDHI16
3394 || r_type == R_SH_PLT_HI16)
3395 && h->plt.offset != (bfd_vma) -1)
3396 || ((r_type == R_SH_GOT32
3397 || r_type == R_SH_GOT_LOW16
3398 || r_type == R_SH_GOT_MEDLOW16
3399 || r_type == R_SH_GOT_MEDHI16
3400 || r_type == R_SH_GOT_HI16)
3401 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3402 && (! info->shared
3403 || (! info->symbolic && h->dynindx != -1)
3404 || !h->def_regular))
3405 /* The cases above are those in which relocation is
3406 overwritten in the switch block below. The cases
3407 below are those in which we must defer relocation
3408 to run-time, because we can't resolve absolute
3409 addresses when creating a shared library. */
3410 || (info->shared
3411 && ((! info->symbolic && h->dynindx != -1)
3412 || !h->def_regular)
3413 && ((r_type == R_SH_DIR32
3414 && !h->forced_local)
3415 || (r_type == R_SH_REL32
3416 && !SYMBOL_CALLS_LOCAL (info, h)))
3417 && ((input_section->flags & SEC_ALLOC) != 0
3418 /* DWARF will emit R_SH_DIR32 relocations in its
3419 sections against symbols defined externally
3420 in shared libraries. We can't do anything
3421 with them here. */
3422 || ((input_section->flags & SEC_DEBUGGING) != 0
3423 && h->def_dynamic)))
3424 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3425 sections because such sections are not SEC_ALLOC and
3426 thus ld.so will not process them. */
3427 || (sec->output_section == NULL
3428 && ((input_section->flags & SEC_DEBUGGING) != 0
3429 && h->def_dynamic))
3430 || (sec->output_section == NULL
3431 && (sh_elf_hash_entry (h)->tls_type == GOT_TLS_IE
3432 || sh_elf_hash_entry (h)->tls_type == GOT_TLS_GD)))
3434 else if (sec->output_section != NULL)
3435 relocation = ((h->root.u.def.value
3436 + sec->output_section->vma
3437 + sec->output_offset)
3438 /* A STO_SH5_ISA32 causes a "bitor 1" to the
3439 symbol value, unless we've seen
3440 STT_DATALABEL on the way to it. */
3441 | ((h->other & STO_SH5_ISA32) != 0
3442 && ! seen_stt_datalabel));
3443 else if (!info->relocatable)
3445 (*_bfd_error_handler)
3446 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3447 input_bfd,
3448 input_section,
3449 (long) rel->r_offset,
3450 howto->name,
3451 h->root.root.string);
3452 return FALSE;
3455 else if (h->root.type == bfd_link_hash_undefweak)
3457 else if (info->unresolved_syms_in_objects == RM_IGNORE
3458 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3460 else if (!info->relocatable)
3462 if (! info->callbacks->undefined_symbol
3463 (info, h->root.root.string, input_bfd,
3464 input_section, rel->r_offset,
3465 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
3466 || ELF_ST_VISIBILITY (h->other))))
3467 return FALSE;
3471 if (sec != NULL && elf_discarded_section (sec))
3473 /* For relocs against symbols from removed linkonce sections,
3474 or sections discarded by a linker script, we just want the
3475 section contents zeroed. Avoid any special processing. */
3476 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3477 rel->r_info = 0;
3478 rel->r_addend = 0;
3479 continue;
3482 if (info->relocatable)
3483 continue;
3485 switch ((int) r_type)
3487 final_link_relocate:
3488 /* COFF relocs don't use the addend. The addend is used for
3489 R_SH_DIR32 to be compatible with other compilers. */
3490 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3491 contents, rel->r_offset,
3492 relocation, addend);
3493 break;
3495 case R_SH_IND12W:
3496 goto final_link_relocate;
3498 case R_SH_DIR8WPN:
3499 case R_SH_DIR8WPZ:
3500 case R_SH_DIR8WPL:
3501 /* If the reloc is against the start of this section, then
3502 the assembler has already taken care of it and the reloc
3503 is here only to assist in relaxing. If the reloc is not
3504 against the start of this section, then it's against an
3505 external symbol and we must deal with it ourselves. */
3506 if (input_section->output_section->vma + input_section->output_offset
3507 != relocation)
3509 int disp = (relocation
3510 - input_section->output_section->vma
3511 - input_section->output_offset
3512 - rel->r_offset);
3513 int mask = 0;
3514 switch (r_type)
3516 case R_SH_DIR8WPN:
3517 case R_SH_DIR8WPZ: mask = 1; break;
3518 case R_SH_DIR8WPL: mask = 3; break;
3519 default: mask = 0; break;
3521 if (disp & mask)
3523 ((*_bfd_error_handler)
3524 (_("%B: 0x%lx: fatal: unaligned branch target for relax-support relocation"),
3525 input_section->owner,
3526 (unsigned long) rel->r_offset));
3527 bfd_set_error (bfd_error_bad_value);
3528 return FALSE;
3530 relocation -= 4;
3531 goto final_link_relocate;
3533 r = bfd_reloc_ok;
3534 break;
3536 default:
3537 #ifdef INCLUDE_SHMEDIA
3538 if (shmedia_prepare_reloc (info, input_bfd, input_section,
3539 contents, rel, &relocation))
3540 goto final_link_relocate;
3541 #endif
3542 bfd_set_error (bfd_error_bad_value);
3543 return FALSE;
3545 case R_SH_DIR16:
3546 case R_SH_DIR8:
3547 case R_SH_DIR8U:
3548 case R_SH_DIR8S:
3549 case R_SH_DIR4U:
3550 goto final_link_relocate;
3552 case R_SH_DIR8UL:
3553 case R_SH_DIR4UL:
3554 if (relocation & 3)
3556 ((*_bfd_error_handler)
3557 (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3558 input_section->owner,
3559 (unsigned long) rel->r_offset, howto->name,
3560 (unsigned long) relocation));
3561 bfd_set_error (bfd_error_bad_value);
3562 return FALSE;
3564 goto final_link_relocate;
3566 case R_SH_DIR8UW:
3567 case R_SH_DIR8SW:
3568 case R_SH_DIR4UW:
3569 if (relocation & 1)
3571 ((*_bfd_error_handler)
3572 (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3573 input_section->owner,
3574 (unsigned long) rel->r_offset, howto->name,
3575 (unsigned long) relocation));
3576 bfd_set_error (bfd_error_bad_value);
3577 return FALSE;
3579 goto final_link_relocate;
3581 case R_SH_PSHA:
3582 if ((signed int)relocation < -32
3583 || (signed int)relocation > 32)
3585 ((*_bfd_error_handler)
3586 (_("%B: 0x%lx: fatal: R_SH_PSHA relocation %d not in range -32..32"),
3587 input_section->owner,
3588 (unsigned long) rel->r_offset,
3589 (unsigned long) relocation));
3590 bfd_set_error (bfd_error_bad_value);
3591 return FALSE;
3593 goto final_link_relocate;
3595 case R_SH_PSHL:
3596 if ((signed int)relocation < -16
3597 || (signed int)relocation > 16)
3599 ((*_bfd_error_handler)
3600 (_("%B: 0x%lx: fatal: R_SH_PSHL relocation %d not in range -32..32"),
3601 input_section->owner,
3602 (unsigned long) rel->r_offset,
3603 (unsigned long) relocation));
3604 bfd_set_error (bfd_error_bad_value);
3605 return FALSE;
3607 goto final_link_relocate;
3609 case R_SH_DIR32:
3610 case R_SH_REL32:
3611 #ifdef INCLUDE_SHMEDIA
3612 case R_SH_IMM_LOW16_PCREL:
3613 case R_SH_IMM_MEDLOW16_PCREL:
3614 case R_SH_IMM_MEDHI16_PCREL:
3615 case R_SH_IMM_HI16_PCREL:
3616 #endif
3617 if (info->shared
3618 && (h == NULL
3619 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3620 || h->root.type != bfd_link_hash_undefweak)
3621 && r_symndx != 0
3622 && (input_section->flags & SEC_ALLOC) != 0
3623 && !is_vxworks_tls
3624 && (r_type == R_SH_DIR32
3625 || !SYMBOL_CALLS_LOCAL (info, h)))
3627 Elf_Internal_Rela outrel;
3628 bfd_byte *loc;
3629 bfd_boolean skip, relocate;
3631 /* When generating a shared object, these relocations
3632 are copied into the output file to be resolved at run
3633 time. */
3635 if (sreloc == NULL)
3637 sreloc = _bfd_elf_get_dynamic_reloc_section
3638 (input_bfd, input_section, /*rela?*/ TRUE);
3639 if (sreloc == NULL)
3640 return FALSE;
3643 skip = FALSE;
3644 relocate = FALSE;
3646 outrel.r_offset =
3647 _bfd_elf_section_offset (output_bfd, info, input_section,
3648 rel->r_offset);
3649 if (outrel.r_offset == (bfd_vma) -1)
3650 skip = TRUE;
3651 else if (outrel.r_offset == (bfd_vma) -2)
3652 skip = TRUE, relocate = TRUE;
3653 outrel.r_offset += (input_section->output_section->vma
3654 + input_section->output_offset);
3656 if (skip)
3657 memset (&outrel, 0, sizeof outrel);
3658 else if (r_type == R_SH_REL32)
3660 BFD_ASSERT (h != NULL && h->dynindx != -1);
3661 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3662 outrel.r_addend
3663 = (howto->partial_inplace
3664 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3665 : addend);
3667 #ifdef INCLUDE_SHMEDIA
3668 else if (r_type == R_SH_IMM_LOW16_PCREL
3669 || r_type == R_SH_IMM_MEDLOW16_PCREL
3670 || r_type == R_SH_IMM_MEDHI16_PCREL
3671 || r_type == R_SH_IMM_HI16_PCREL)
3673 BFD_ASSERT (h != NULL && h->dynindx != -1);
3674 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3675 outrel.r_addend = addend;
3677 #endif
3678 else
3680 /* h->dynindx may be -1 if this symbol was marked to
3681 become local. */
3682 if (h == NULL
3683 || ((info->symbolic || h->dynindx == -1)
3684 && h->def_regular))
3686 relocate = howto->partial_inplace;
3687 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3689 else
3691 BFD_ASSERT (h->dynindx != -1);
3692 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3694 outrel.r_addend = relocation;
3695 outrel.r_addend
3696 += (howto->partial_inplace
3697 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3698 : addend);
3701 loc = sreloc->contents;
3702 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3703 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3705 /* If this reloc is against an external symbol, we do
3706 not want to fiddle with the addend. Otherwise, we
3707 need to include the symbol value so that it becomes
3708 an addend for the dynamic reloc. */
3709 if (! relocate)
3710 continue;
3712 goto final_link_relocate;
3714 case R_SH_GOTPLT32:
3715 #ifdef INCLUDE_SHMEDIA
3716 case R_SH_GOTPLT_LOW16:
3717 case R_SH_GOTPLT_MEDLOW16:
3718 case R_SH_GOTPLT_MEDHI16:
3719 case R_SH_GOTPLT_HI16:
3720 case R_SH_GOTPLT10BY4:
3721 case R_SH_GOTPLT10BY8:
3722 #endif
3723 /* Relocation is to the entry for this symbol in the
3724 procedure linkage table. */
3726 if (h == NULL
3727 || h->forced_local
3728 || ! info->shared
3729 || info->symbolic
3730 || h->dynindx == -1
3731 || h->plt.offset == (bfd_vma) -1
3732 || h->got.offset != (bfd_vma) -1)
3733 goto force_got;
3735 /* Relocation is to the entry for this symbol in the global
3736 offset table extension for the procedure linkage table. */
3738 BFD_ASSERT (sgotplt != NULL);
3739 relocation = (sgotplt->output_offset
3740 + (get_plt_index (htab->plt_info, h->plt.offset)
3741 + 3) * 4);
3743 #ifdef GOT_BIAS
3744 relocation -= GOT_BIAS;
3745 #endif
3747 goto final_link_relocate;
3749 force_got:
3750 case R_SH_GOT32:
3751 #ifdef INCLUDE_SHMEDIA
3752 case R_SH_GOT_LOW16:
3753 case R_SH_GOT_MEDLOW16:
3754 case R_SH_GOT_MEDHI16:
3755 case R_SH_GOT_HI16:
3756 case R_SH_GOT10BY4:
3757 case R_SH_GOT10BY8:
3758 #endif
3759 /* Relocation is to the entry for this symbol in the global
3760 offset table. */
3762 BFD_ASSERT (sgot != NULL);
3764 if (h != NULL)
3766 bfd_boolean dyn;
3768 off = h->got.offset;
3769 #ifdef INCLUDE_SHMEDIA
3770 if (seen_stt_datalabel)
3772 struct elf_sh_link_hash_entry *hsh;
3774 hsh = (struct elf_sh_link_hash_entry *)h;
3775 off = hsh->datalabel_got.offset;
3777 #endif
3778 BFD_ASSERT (off != (bfd_vma) -1);
3780 dyn = htab->root.dynamic_sections_created;
3781 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3782 || (info->shared
3783 && SYMBOL_REFERENCES_LOCAL (info, h))
3784 || (ELF_ST_VISIBILITY (h->other)
3785 && h->root.type == bfd_link_hash_undefweak))
3787 /* This is actually a static link, or it is a
3788 -Bsymbolic link and the symbol is defined
3789 locally, or the symbol was forced to be local
3790 because of a version file. We must initialize
3791 this entry in the global offset table. Since the
3792 offset must always be a multiple of 4, we use the
3793 least significant bit to record whether we have
3794 initialized it already.
3796 When doing a dynamic link, we create a .rela.got
3797 relocation entry to initialize the value. This
3798 is done in the finish_dynamic_symbol routine. */
3799 if ((off & 1) != 0)
3800 off &= ~1;
3801 else
3803 bfd_put_32 (output_bfd, relocation,
3804 sgot->contents + off);
3805 #ifdef INCLUDE_SHMEDIA
3806 if (seen_stt_datalabel)
3808 struct elf_sh_link_hash_entry *hsh;
3810 hsh = (struct elf_sh_link_hash_entry *)h;
3811 hsh->datalabel_got.offset |= 1;
3813 else
3814 #endif
3815 h->got.offset |= 1;
3819 relocation = sgot->output_offset + off;
3821 else
3823 #ifdef INCLUDE_SHMEDIA
3824 if (rel->r_addend)
3826 BFD_ASSERT (local_got_offsets != NULL
3827 && (local_got_offsets[symtab_hdr->sh_info
3828 + r_symndx]
3829 != (bfd_vma) -1));
3831 off = local_got_offsets[symtab_hdr->sh_info
3832 + r_symndx];
3834 else
3836 #endif
3837 BFD_ASSERT (local_got_offsets != NULL
3838 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3840 off = local_got_offsets[r_symndx];
3841 #ifdef INCLUDE_SHMEDIA
3843 #endif
3845 /* The offset must always be a multiple of 4. We use
3846 the least significant bit to record whether we have
3847 already generated the necessary reloc. */
3848 if ((off & 1) != 0)
3849 off &= ~1;
3850 else
3852 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3854 if (info->shared)
3856 Elf_Internal_Rela outrel;
3857 bfd_byte *loc;
3859 if (srelgot == NULL)
3861 srelgot = bfd_get_section_by_name (dynobj,
3862 ".rela.got");
3863 BFD_ASSERT (srelgot != NULL);
3866 outrel.r_offset = (sgot->output_section->vma
3867 + sgot->output_offset
3868 + off);
3869 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3870 outrel.r_addend = relocation;
3871 loc = srelgot->contents;
3872 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3873 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3876 #ifdef INCLUDE_SHMEDIA
3877 if (rel->r_addend)
3878 local_got_offsets[symtab_hdr->sh_info + r_symndx] |= 1;
3879 else
3880 #endif
3881 local_got_offsets[r_symndx] |= 1;
3884 relocation = sgot->output_offset + off;
3887 #ifdef GOT_BIAS
3888 relocation -= GOT_BIAS;
3889 #endif
3891 goto final_link_relocate;
3893 case R_SH_GOTOFF:
3894 #ifdef INCLUDE_SHMEDIA
3895 case R_SH_GOTOFF_LOW16:
3896 case R_SH_GOTOFF_MEDLOW16:
3897 case R_SH_GOTOFF_MEDHI16:
3898 case R_SH_GOTOFF_HI16:
3899 #endif
3900 /* Relocation is relative to the start of the global offset
3901 table. */
3903 BFD_ASSERT (sgot != NULL);
3905 /* Note that sgot->output_offset is not involved in this
3906 calculation. We always want the start of .got. If we
3907 defined _GLOBAL_OFFSET_TABLE in a different way, as is
3908 permitted by the ABI, we might have to change this
3909 calculation. */
3910 relocation -= sgot->output_section->vma;
3912 #ifdef GOT_BIAS
3913 relocation -= GOT_BIAS;
3914 #endif
3916 addend = rel->r_addend;
3918 goto final_link_relocate;
3920 case R_SH_GOTPC:
3921 #ifdef INCLUDE_SHMEDIA
3922 case R_SH_GOTPC_LOW16:
3923 case R_SH_GOTPC_MEDLOW16:
3924 case R_SH_GOTPC_MEDHI16:
3925 case R_SH_GOTPC_HI16:
3926 #endif
3927 /* Use global offset table as symbol value. */
3929 BFD_ASSERT (sgot != NULL);
3930 relocation = sgot->output_section->vma;
3932 #ifdef GOT_BIAS
3933 relocation += GOT_BIAS;
3934 #endif
3936 addend = rel->r_addend;
3938 goto final_link_relocate;
3940 case R_SH_PLT32:
3941 #ifdef INCLUDE_SHMEDIA
3942 case R_SH_PLT_LOW16:
3943 case R_SH_PLT_MEDLOW16:
3944 case R_SH_PLT_MEDHI16:
3945 case R_SH_PLT_HI16:
3946 #endif
3947 /* Relocation is to the entry for this symbol in the
3948 procedure linkage table. */
3950 /* Resolve a PLT reloc against a local symbol directly,
3951 without using the procedure linkage table. */
3952 if (h == NULL)
3953 goto final_link_relocate;
3955 if (h->forced_local)
3956 goto final_link_relocate;
3958 if (h->plt.offset == (bfd_vma) -1)
3960 /* We didn't make a PLT entry for this symbol. This
3961 happens when statically linking PIC code, or when
3962 using -Bsymbolic. */
3963 goto final_link_relocate;
3966 BFD_ASSERT (splt != NULL);
3967 relocation = (splt->output_section->vma
3968 + splt->output_offset
3969 + h->plt.offset);
3971 #ifdef INCLUDE_SHMEDIA
3972 relocation++;
3973 #endif
3975 addend = rel->r_addend;
3977 goto final_link_relocate;
3979 case R_SH_LOOP_START:
3981 static bfd_vma start, end;
3983 start = (relocation + rel->r_addend
3984 - (sec->output_section->vma + sec->output_offset));
3985 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3986 rel->r_offset, sec, start, end);
3987 break;
3989 case R_SH_LOOP_END:
3990 end = (relocation + rel->r_addend
3991 - (sec->output_section->vma + sec->output_offset));
3992 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3993 rel->r_offset, sec, start, end);
3994 break;
3997 case R_SH_TLS_GD_32:
3998 case R_SH_TLS_IE_32:
3999 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4000 tls_type = GOT_UNKNOWN;
4001 if (h == NULL && local_got_offsets)
4002 tls_type = sh_elf_local_got_tls_type (input_bfd) [r_symndx];
4003 else if (h != NULL)
4005 tls_type = sh_elf_hash_entry (h)->tls_type;
4006 if (! info->shared
4007 && (h->dynindx == -1
4008 || h->def_regular))
4009 r_type = R_SH_TLS_LE_32;
4012 if (r_type == R_SH_TLS_GD_32 && tls_type == GOT_TLS_IE)
4013 r_type = R_SH_TLS_IE_32;
4015 if (r_type == R_SH_TLS_LE_32)
4017 bfd_vma offset;
4018 unsigned short insn;
4020 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4022 /* GD->LE transition:
4023 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4024 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4025 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4026 We change it into:
4027 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4028 nop; nop; ...
4029 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4031 offset = rel->r_offset;
4032 BFD_ASSERT (offset >= 16);
4033 /* Size of GD instructions is 16 or 18. */
4034 offset -= 16;
4035 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4036 if ((insn & 0xff00) == 0xc700)
4038 BFD_ASSERT (offset >= 2);
4039 offset -= 2;
4040 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4043 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4044 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4045 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4046 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4047 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4048 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4049 BFD_ASSERT (insn == 0x310c);
4050 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4051 BFD_ASSERT (insn == 0x410b);
4052 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4053 BFD_ASSERT (insn == 0x34cc);
4055 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4056 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4057 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4058 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4059 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4061 else
4063 int target;
4065 /* IE->LE transition:
4066 mov.l 1f,r0; stc gbr,rN; mov.l @(r0,r12),rM;
4067 bra 2f; add ...; .align 2; 1: x@GOTTPOFF; 2:
4068 We change it into:
4069 mov.l .Ln,rM; stc gbr,rN; nop; ...;
4070 1: x@TPOFF; 2:. */
4072 offset = rel->r_offset;
4073 BFD_ASSERT (offset >= 16);
4074 /* Size of IE instructions is 10 or 12. */
4075 offset -= 10;
4076 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4077 if ((insn & 0xf0ff) == 0x0012)
4079 BFD_ASSERT (offset >= 2);
4080 offset -= 2;
4081 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4084 BFD_ASSERT ((insn & 0xff00) == 0xd000);
4085 target = insn & 0x00ff;
4086 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4087 BFD_ASSERT ((insn & 0xf0ff) == 0x0012);
4088 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4089 BFD_ASSERT ((insn & 0xf0ff) == 0x00ce);
4090 insn = 0xd000 | (insn & 0x0f00) | target;
4091 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4092 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4095 bfd_put_32 (output_bfd, tpoff (info, relocation),
4096 contents + rel->r_offset);
4097 continue;
4100 sgot = htab->sgot;
4101 if (sgot == NULL)
4102 abort ();
4104 if (h != NULL)
4105 off = h->got.offset;
4106 else
4108 if (local_got_offsets == NULL)
4109 abort ();
4111 off = local_got_offsets[r_symndx];
4114 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4115 if (r_type == R_SH_TLS_IE_32
4116 && ! htab->root.dynamic_sections_created)
4118 off &= ~1;
4119 bfd_put_32 (output_bfd, tpoff (info, relocation),
4120 sgot->contents + off);
4121 bfd_put_32 (output_bfd, sgot->output_offset + off,
4122 contents + rel->r_offset);
4123 continue;
4126 if ((off & 1) != 0)
4127 off &= ~1;
4128 else
4130 Elf_Internal_Rela outrel;
4131 bfd_byte *loc;
4132 int dr_type, indx;
4134 if (srelgot == NULL)
4136 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4137 BFD_ASSERT (srelgot != NULL);
4140 outrel.r_offset = (sgot->output_section->vma
4141 + sgot->output_offset + off);
4143 if (h == NULL || h->dynindx == -1)
4144 indx = 0;
4145 else
4146 indx = h->dynindx;
4148 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4149 R_SH_TLS_TPOFF32);
4150 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4151 outrel.r_addend = relocation - dtpoff_base (info);
4152 else
4153 outrel.r_addend = 0;
4154 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4155 loc = srelgot->contents;
4156 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4157 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4159 if (r_type == R_SH_TLS_GD_32)
4161 if (indx == 0)
4163 bfd_put_32 (output_bfd,
4164 relocation - dtpoff_base (info),
4165 sgot->contents + off + 4);
4167 else
4169 outrel.r_info = ELF32_R_INFO (indx,
4170 R_SH_TLS_DTPOFF32);
4171 outrel.r_offset += 4;
4172 outrel.r_addend = 0;
4173 srelgot->reloc_count++;
4174 loc += sizeof (Elf32_External_Rela);
4175 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4179 if (h != NULL)
4180 h->got.offset |= 1;
4181 else
4182 local_got_offsets[r_symndx] |= 1;
4185 if (off >= (bfd_vma) -2)
4186 abort ();
4188 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4189 relocation = sgot->output_offset + off;
4190 else
4192 bfd_vma offset;
4193 unsigned short insn;
4195 /* GD->IE transition:
4196 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4197 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4198 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4199 We change it into:
4200 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4201 nop; nop; bra 3f; nop; .align 2;
4202 1: .long x@TPOFF; 2:...; 3:. */
4204 offset = rel->r_offset;
4205 BFD_ASSERT (offset >= 16);
4206 /* Size of GD instructions is 16 or 18. */
4207 offset -= 16;
4208 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4209 if ((insn & 0xff00) == 0xc700)
4211 BFD_ASSERT (offset >= 2);
4212 offset -= 2;
4213 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4216 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4218 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4219 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4221 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4222 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4223 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4224 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4225 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4226 BFD_ASSERT (insn == 0x310c);
4227 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4228 BFD_ASSERT (insn == 0x410b);
4229 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4230 BFD_ASSERT (insn == 0x34cc);
4232 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4233 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4234 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4235 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4236 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4238 bfd_put_32 (output_bfd, sgot->output_offset + off,
4239 contents + rel->r_offset);
4241 continue;
4244 addend = rel->r_addend;
4246 goto final_link_relocate;
4248 case R_SH_TLS_LD_32:
4249 if (! info->shared)
4251 bfd_vma offset;
4252 unsigned short insn;
4254 /* LD->LE transition:
4255 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4256 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4257 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4258 We change it into:
4259 stc gbr,r0; nop; nop; nop;
4260 nop; nop; bra 3f; ...; 3:. */
4262 offset = rel->r_offset;
4263 BFD_ASSERT (offset >= 16);
4264 /* Size of LD instructions is 16 or 18. */
4265 offset -= 16;
4266 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4267 if ((insn & 0xff00) == 0xc700)
4269 BFD_ASSERT (offset >= 2);
4270 offset -= 2;
4271 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4274 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4275 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4276 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4277 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4278 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4279 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4280 BFD_ASSERT (insn == 0x310c);
4281 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4282 BFD_ASSERT (insn == 0x410b);
4283 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4284 BFD_ASSERT (insn == 0x34cc);
4286 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4287 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4288 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4289 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4290 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4291 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4293 continue;
4296 sgot = htab->sgot;
4297 if (sgot == NULL)
4298 abort ();
4300 off = htab->tls_ldm_got.offset;
4301 if (off & 1)
4302 off &= ~1;
4303 else
4305 Elf_Internal_Rela outrel;
4306 bfd_byte *loc;
4308 srelgot = htab->srelgot;
4309 if (srelgot == NULL)
4310 abort ();
4312 outrel.r_offset = (sgot->output_section->vma
4313 + sgot->output_offset + off);
4314 outrel.r_addend = 0;
4315 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4316 loc = srelgot->contents;
4317 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4318 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4319 htab->tls_ldm_got.offset |= 1;
4322 relocation = sgot->output_offset + off;
4323 addend = rel->r_addend;
4325 goto final_link_relocate;
4327 case R_SH_TLS_LDO_32:
4328 if (! info->shared)
4329 relocation = tpoff (info, relocation);
4330 else
4331 relocation -= dtpoff_base (info);
4333 addend = rel->r_addend;
4334 goto final_link_relocate;
4336 case R_SH_TLS_LE_32:
4338 int indx;
4339 Elf_Internal_Rela outrel;
4340 bfd_byte *loc;
4342 if (! info->shared)
4344 relocation = tpoff (info, relocation);
4345 addend = rel->r_addend;
4346 goto final_link_relocate;
4349 if (sreloc == NULL)
4351 sreloc = _bfd_elf_get_dynamic_reloc_section
4352 (input_bfd, input_section, /*rela?*/ TRUE);
4353 if (sreloc == NULL)
4354 return FALSE;
4357 if (h == NULL || h->dynindx == -1)
4358 indx = 0;
4359 else
4360 indx = h->dynindx;
4362 outrel.r_offset = (input_section->output_section->vma
4363 + input_section->output_offset
4364 + rel->r_offset);
4365 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4366 if (indx == 0)
4367 outrel.r_addend = relocation - dtpoff_base (info);
4368 else
4369 outrel.r_addend = 0;
4371 loc = sreloc->contents;
4372 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4373 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4374 continue;
4378 relocation_done:
4379 if (r != bfd_reloc_ok)
4381 switch (r)
4383 default:
4384 case bfd_reloc_outofrange:
4385 abort ();
4386 case bfd_reloc_overflow:
4388 const char *name;
4390 if (h != NULL)
4391 name = NULL;
4392 else
4394 name = (bfd_elf_string_from_elf_section
4395 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4396 if (name == NULL)
4397 return FALSE;
4398 if (*name == '\0')
4399 name = bfd_section_name (input_bfd, sec);
4401 if (! ((*info->callbacks->reloc_overflow)
4402 (info, (h ? &h->root : NULL), name, howto->name,
4403 (bfd_vma) 0, input_bfd, input_section,
4404 rel->r_offset)))
4405 return FALSE;
4407 break;
4412 return TRUE;
4415 /* This is a version of bfd_generic_get_relocated_section_contents
4416 which uses sh_elf_relocate_section. */
4418 static bfd_byte *
4419 sh_elf_get_relocated_section_contents (bfd *output_bfd,
4420 struct bfd_link_info *link_info,
4421 struct bfd_link_order *link_order,
4422 bfd_byte *data,
4423 bfd_boolean relocatable,
4424 asymbol **symbols)
4426 Elf_Internal_Shdr *symtab_hdr;
4427 asection *input_section = link_order->u.indirect.section;
4428 bfd *input_bfd = input_section->owner;
4429 asection **sections = NULL;
4430 Elf_Internal_Rela *internal_relocs = NULL;
4431 Elf_Internal_Sym *isymbuf = NULL;
4433 /* We only need to handle the case of relaxing, or of having a
4434 particular set of section contents, specially. */
4435 if (relocatable
4436 || elf_section_data (input_section)->this_hdr.contents == NULL)
4437 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
4438 link_order, data,
4439 relocatable,
4440 symbols);
4442 symtab_hdr = &elf_symtab_hdr (input_bfd);
4444 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
4445 (size_t) input_section->size);
4447 if ((input_section->flags & SEC_RELOC) != 0
4448 && input_section->reloc_count > 0)
4450 asection **secpp;
4451 Elf_Internal_Sym *isym, *isymend;
4452 bfd_size_type amt;
4454 internal_relocs = (_bfd_elf_link_read_relocs
4455 (input_bfd, input_section, NULL,
4456 (Elf_Internal_Rela *) NULL, FALSE));
4457 if (internal_relocs == NULL)
4458 goto error_return;
4460 if (symtab_hdr->sh_info != 0)
4462 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4463 if (isymbuf == NULL)
4464 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4465 symtab_hdr->sh_info, 0,
4466 NULL, NULL, NULL);
4467 if (isymbuf == NULL)
4468 goto error_return;
4471 amt = symtab_hdr->sh_info;
4472 amt *= sizeof (asection *);
4473 sections = (asection **) bfd_malloc (amt);
4474 if (sections == NULL && amt != 0)
4475 goto error_return;
4477 isymend = isymbuf + symtab_hdr->sh_info;
4478 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
4480 asection *isec;
4482 if (isym->st_shndx == SHN_UNDEF)
4483 isec = bfd_und_section_ptr;
4484 else if (isym->st_shndx == SHN_ABS)
4485 isec = bfd_abs_section_ptr;
4486 else if (isym->st_shndx == SHN_COMMON)
4487 isec = bfd_com_section_ptr;
4488 else
4489 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
4491 *secpp = isec;
4494 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
4495 input_section, data, internal_relocs,
4496 isymbuf, sections))
4497 goto error_return;
4499 if (sections != NULL)
4500 free (sections);
4501 if (isymbuf != NULL
4502 && symtab_hdr->contents != (unsigned char *) isymbuf)
4503 free (isymbuf);
4504 if (elf_section_data (input_section)->relocs != internal_relocs)
4505 free (internal_relocs);
4508 return data;
4510 error_return:
4511 if (sections != NULL)
4512 free (sections);
4513 if (isymbuf != NULL
4514 && symtab_hdr->contents != (unsigned char *) isymbuf)
4515 free (isymbuf);
4516 if (internal_relocs != NULL
4517 && elf_section_data (input_section)->relocs != internal_relocs)
4518 free (internal_relocs);
4519 return NULL;
4522 /* Return the base VMA address which should be subtracted from real addresses
4523 when resolving @dtpoff relocation.
4524 This is PT_TLS segment p_vaddr. */
4526 static bfd_vma
4527 dtpoff_base (struct bfd_link_info *info)
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 return elf_hash_table (info)->tls_sec->vma;
4535 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
4537 static bfd_vma
4538 tpoff (struct bfd_link_info *info, bfd_vma address)
4540 /* If tls_sec is NULL, we should have signalled an error already. */
4541 if (elf_hash_table (info)->tls_sec == NULL)
4542 return 0;
4543 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
4544 structure which has 2 pointer fields. */
4545 return (address - elf_hash_table (info)->tls_sec->vma
4546 + align_power ((bfd_vma) 8,
4547 elf_hash_table (info)->tls_sec->alignment_power));
4550 static asection *
4551 sh_elf_gc_mark_hook (asection *sec,
4552 struct bfd_link_info *info,
4553 Elf_Internal_Rela *rel,
4554 struct elf_link_hash_entry *h,
4555 Elf_Internal_Sym *sym)
4557 if (h != NULL)
4558 switch (ELF32_R_TYPE (rel->r_info))
4560 case R_SH_GNU_VTINHERIT:
4561 case R_SH_GNU_VTENTRY:
4562 return NULL;
4565 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4568 /* Update the got entry reference counts for the section being removed. */
4570 static bfd_boolean
4571 sh_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4572 asection *sec, const Elf_Internal_Rela *relocs)
4574 Elf_Internal_Shdr *symtab_hdr;
4575 struct elf_link_hash_entry **sym_hashes;
4576 bfd_signed_vma *local_got_refcounts;
4577 const Elf_Internal_Rela *rel, *relend;
4579 if (info->relocatable)
4580 return TRUE;
4582 elf_section_data (sec)->local_dynrel = NULL;
4584 symtab_hdr = &elf_symtab_hdr (abfd);
4585 sym_hashes = elf_sym_hashes (abfd);
4586 local_got_refcounts = elf_local_got_refcounts (abfd);
4588 relend = relocs + sec->reloc_count;
4589 for (rel = relocs; rel < relend; rel++)
4591 unsigned long r_symndx;
4592 unsigned int r_type;
4593 struct elf_link_hash_entry *h = NULL;
4594 #ifdef INCLUDE_SHMEDIA
4595 int seen_stt_datalabel = 0;
4596 #endif
4598 r_symndx = ELF32_R_SYM (rel->r_info);
4599 if (r_symndx >= symtab_hdr->sh_info)
4601 struct elf_sh_link_hash_entry *eh;
4602 struct elf_sh_dyn_relocs **pp;
4603 struct elf_sh_dyn_relocs *p;
4605 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4606 while (h->root.type == bfd_link_hash_indirect
4607 || h->root.type == bfd_link_hash_warning)
4609 #ifdef INCLUDE_SHMEDIA
4610 seen_stt_datalabel |= h->type == STT_DATALABEL;
4611 #endif
4612 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4614 eh = (struct elf_sh_link_hash_entry *) h;
4615 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4616 if (p->sec == sec)
4618 /* Everything must go for SEC. */
4619 *pp = p->next;
4620 break;
4624 r_type = ELF32_R_TYPE (rel->r_info);
4625 switch (sh_elf_optimized_tls_reloc (info, r_type, h != NULL))
4627 case R_SH_TLS_LD_32:
4628 if (sh_elf_hash_table (info)->tls_ldm_got.refcount > 0)
4629 sh_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
4630 break;
4632 case R_SH_GOT32:
4633 case R_SH_GOTOFF:
4634 case R_SH_GOTPC:
4635 #ifdef INCLUDE_SHMEDIA
4636 case R_SH_GOT_LOW16:
4637 case R_SH_GOT_MEDLOW16:
4638 case R_SH_GOT_MEDHI16:
4639 case R_SH_GOT_HI16:
4640 case R_SH_GOT10BY4:
4641 case R_SH_GOT10BY8:
4642 case R_SH_GOTOFF_LOW16:
4643 case R_SH_GOTOFF_MEDLOW16:
4644 case R_SH_GOTOFF_MEDHI16:
4645 case R_SH_GOTOFF_HI16:
4646 case R_SH_GOTPC_LOW16:
4647 case R_SH_GOTPC_MEDLOW16:
4648 case R_SH_GOTPC_MEDHI16:
4649 case R_SH_GOTPC_HI16:
4650 #endif
4651 case R_SH_TLS_GD_32:
4652 case R_SH_TLS_IE_32:
4653 if (h != NULL)
4655 #ifdef INCLUDE_SHMEDIA
4656 if (seen_stt_datalabel)
4658 struct elf_sh_link_hash_entry *eh;
4659 eh = (struct elf_sh_link_hash_entry *) h;
4660 if (eh->datalabel_got.refcount > 0)
4661 eh->datalabel_got.refcount -= 1;
4663 else
4664 #endif
4665 if (h->got.refcount > 0)
4666 h->got.refcount -= 1;
4668 else if (local_got_refcounts != NULL)
4670 #ifdef INCLUDE_SHMEDIA
4671 if (rel->r_addend & 1)
4673 if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4674 local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4676 else
4677 #endif
4678 if (local_got_refcounts[r_symndx] > 0)
4679 local_got_refcounts[r_symndx] -= 1;
4681 break;
4683 case R_SH_DIR32:
4684 case R_SH_REL32:
4685 if (info->shared)
4686 break;
4687 /* Fall thru */
4689 case R_SH_PLT32:
4690 #ifdef INCLUDE_SHMEDIA
4691 case R_SH_PLT_LOW16:
4692 case R_SH_PLT_MEDLOW16:
4693 case R_SH_PLT_MEDHI16:
4694 case R_SH_PLT_HI16:
4695 #endif
4696 if (h != NULL)
4698 if (h->plt.refcount > 0)
4699 h->plt.refcount -= 1;
4701 break;
4703 case R_SH_GOTPLT32:
4704 #ifdef INCLUDE_SHMEDIA
4705 case R_SH_GOTPLT_LOW16:
4706 case R_SH_GOTPLT_MEDLOW16:
4707 case R_SH_GOTPLT_MEDHI16:
4708 case R_SH_GOTPLT_HI16:
4709 case R_SH_GOTPLT10BY4:
4710 case R_SH_GOTPLT10BY8:
4711 #endif
4712 if (h != NULL)
4714 struct elf_sh_link_hash_entry *eh;
4715 eh = (struct elf_sh_link_hash_entry *) h;
4716 if (eh->gotplt_refcount > 0)
4718 eh->gotplt_refcount -= 1;
4719 if (h->plt.refcount > 0)
4720 h->plt.refcount -= 1;
4722 #ifdef INCLUDE_SHMEDIA
4723 else if (seen_stt_datalabel)
4725 if (eh->datalabel_got.refcount > 0)
4726 eh->datalabel_got.refcount -= 1;
4728 #endif
4729 else if (h->got.refcount > 0)
4730 h->got.refcount -= 1;
4732 else if (local_got_refcounts != NULL)
4734 #ifdef INCLUDE_SHMEDIA
4735 if (rel->r_addend & 1)
4737 if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4738 local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4740 else
4741 #endif
4742 if (local_got_refcounts[r_symndx] > 0)
4743 local_got_refcounts[r_symndx] -= 1;
4745 break;
4747 default:
4748 break;
4752 return TRUE;
4755 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4757 static void
4758 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
4759 struct elf_link_hash_entry *dir,
4760 struct elf_link_hash_entry *ind)
4762 struct elf_sh_link_hash_entry *edir, *eind;
4764 edir = (struct elf_sh_link_hash_entry *) dir;
4765 eind = (struct elf_sh_link_hash_entry *) ind;
4767 if (eind->dyn_relocs != NULL)
4769 if (edir->dyn_relocs != NULL)
4771 struct elf_sh_dyn_relocs **pp;
4772 struct elf_sh_dyn_relocs *p;
4774 /* Add reloc counts against the indirect sym to the direct sym
4775 list. Merge any entries against the same section. */
4776 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4778 struct elf_sh_dyn_relocs *q;
4780 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4781 if (q->sec == p->sec)
4783 q->pc_count += p->pc_count;
4784 q->count += p->count;
4785 *pp = p->next;
4786 break;
4788 if (q == NULL)
4789 pp = &p->next;
4791 *pp = edir->dyn_relocs;
4794 edir->dyn_relocs = eind->dyn_relocs;
4795 eind->dyn_relocs = NULL;
4797 edir->gotplt_refcount = eind->gotplt_refcount;
4798 eind->gotplt_refcount = 0;
4799 #ifdef INCLUDE_SHMEDIA
4800 edir->datalabel_got.refcount += eind->datalabel_got.refcount;
4801 eind->datalabel_got.refcount = 0;
4802 #endif
4804 if (ind->root.type == bfd_link_hash_indirect
4805 && dir->got.refcount <= 0)
4807 edir->tls_type = eind->tls_type;
4808 eind->tls_type = GOT_UNKNOWN;
4811 if (ind->root.type != bfd_link_hash_indirect
4812 && dir->dynamic_adjusted)
4814 /* If called to transfer flags for a weakdef during processing
4815 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
4816 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4817 dir->ref_dynamic |= ind->ref_dynamic;
4818 dir->ref_regular |= ind->ref_regular;
4819 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
4820 dir->needs_plt |= ind->needs_plt;
4822 else
4823 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
4826 static int
4827 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
4828 int is_local)
4830 if (info->shared)
4831 return r_type;
4833 switch (r_type)
4835 case R_SH_TLS_GD_32:
4836 case R_SH_TLS_IE_32:
4837 if (is_local)
4838 return R_SH_TLS_LE_32;
4839 return R_SH_TLS_IE_32;
4840 case R_SH_TLS_LD_32:
4841 return R_SH_TLS_LE_32;
4844 return r_type;
4847 /* Look through the relocs for a section during the first phase.
4848 Since we don't do .gots or .plts, we just need to consider the
4849 virtual table relocs for gc. */
4851 static bfd_boolean
4852 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
4853 const Elf_Internal_Rela *relocs)
4855 Elf_Internal_Shdr *symtab_hdr;
4856 struct elf_link_hash_entry **sym_hashes;
4857 struct elf_sh_link_hash_table *htab;
4858 const Elf_Internal_Rela *rel;
4859 const Elf_Internal_Rela *rel_end;
4860 bfd_vma *local_got_offsets;
4861 asection *sgot;
4862 asection *srelgot;
4863 asection *sreloc;
4864 unsigned int r_type;
4865 int tls_type, old_tls_type;
4867 sgot = NULL;
4868 srelgot = NULL;
4869 sreloc = NULL;
4871 if (info->relocatable)
4872 return TRUE;
4874 BFD_ASSERT (is_sh_elf (abfd));
4876 symtab_hdr = &elf_symtab_hdr (abfd);
4877 sym_hashes = elf_sym_hashes (abfd);
4879 htab = sh_elf_hash_table (info);
4880 if (htab == NULL)
4881 return FALSE;
4883 local_got_offsets = elf_local_got_offsets (abfd);
4885 rel_end = relocs + sec->reloc_count;
4886 for (rel = relocs; rel < rel_end; rel++)
4888 struct elf_link_hash_entry *h;
4889 unsigned long r_symndx;
4890 #ifdef INCLUDE_SHMEDIA
4891 int seen_stt_datalabel = 0;
4892 #endif
4894 r_symndx = ELF32_R_SYM (rel->r_info);
4895 r_type = ELF32_R_TYPE (rel->r_info);
4897 if (r_symndx < symtab_hdr->sh_info)
4898 h = NULL;
4899 else
4901 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4902 while (h->root.type == bfd_link_hash_indirect
4903 || h->root.type == bfd_link_hash_warning)
4905 #ifdef INCLUDE_SHMEDIA
4906 seen_stt_datalabel |= h->type == STT_DATALABEL;
4907 #endif
4908 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4912 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4913 if (! info->shared
4914 && r_type == R_SH_TLS_IE_32
4915 && h != NULL
4916 && h->root.type != bfd_link_hash_undefined
4917 && h->root.type != bfd_link_hash_undefweak
4918 && (h->dynindx == -1
4919 || h->def_regular))
4920 r_type = R_SH_TLS_LE_32;
4922 /* Some relocs require a global offset table. */
4923 if (htab->sgot == NULL)
4925 switch (r_type)
4927 case R_SH_GOTPLT32:
4928 case R_SH_GOT32:
4929 case R_SH_GOTOFF:
4930 case R_SH_GOTPC:
4931 #ifdef INCLUDE_SHMEDIA
4932 case R_SH_GOTPLT_LOW16:
4933 case R_SH_GOTPLT_MEDLOW16:
4934 case R_SH_GOTPLT_MEDHI16:
4935 case R_SH_GOTPLT_HI16:
4936 case R_SH_GOTPLT10BY4:
4937 case R_SH_GOTPLT10BY8:
4938 case R_SH_GOT_LOW16:
4939 case R_SH_GOT_MEDLOW16:
4940 case R_SH_GOT_MEDHI16:
4941 case R_SH_GOT_HI16:
4942 case R_SH_GOT10BY4:
4943 case R_SH_GOT10BY8:
4944 case R_SH_GOTOFF_LOW16:
4945 case R_SH_GOTOFF_MEDLOW16:
4946 case R_SH_GOTOFF_MEDHI16:
4947 case R_SH_GOTOFF_HI16:
4948 case R_SH_GOTPC_LOW16:
4949 case R_SH_GOTPC_MEDLOW16:
4950 case R_SH_GOTPC_MEDHI16:
4951 case R_SH_GOTPC_HI16:
4952 #endif
4953 case R_SH_TLS_GD_32:
4954 case R_SH_TLS_LD_32:
4955 case R_SH_TLS_IE_32:
4956 if (htab->sgot == NULL)
4958 if (htab->root.dynobj == NULL)
4959 htab->root.dynobj = abfd;
4960 if (!create_got_section (htab->root.dynobj, info))
4961 return FALSE;
4963 break;
4965 default:
4966 break;
4970 switch (r_type)
4972 /* This relocation describes the C++ object vtable hierarchy.
4973 Reconstruct it for later use during GC. */
4974 case R_SH_GNU_VTINHERIT:
4975 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4976 return FALSE;
4977 break;
4979 /* This relocation describes which C++ vtable entries are actually
4980 used. Record for later use during GC. */
4981 case R_SH_GNU_VTENTRY:
4982 BFD_ASSERT (h != NULL);
4983 if (h != NULL
4984 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4985 return FALSE;
4986 break;
4988 case R_SH_TLS_IE_32:
4989 if (info->shared)
4990 info->flags |= DF_STATIC_TLS;
4992 /* FALLTHROUGH */
4993 force_got:
4994 case R_SH_TLS_GD_32:
4995 case R_SH_GOT32:
4996 #ifdef INCLUDE_SHMEDIA
4997 case R_SH_GOT_LOW16:
4998 case R_SH_GOT_MEDLOW16:
4999 case R_SH_GOT_MEDHI16:
5000 case R_SH_GOT_HI16:
5001 case R_SH_GOT10BY4:
5002 case R_SH_GOT10BY8:
5003 #endif
5004 switch (r_type)
5006 default:
5007 tls_type = GOT_NORMAL;
5008 break;
5009 case R_SH_TLS_GD_32:
5010 tls_type = GOT_TLS_GD;
5011 break;
5012 case R_SH_TLS_IE_32:
5013 tls_type = GOT_TLS_IE;
5014 break;
5017 if (h != NULL)
5019 #ifdef INCLUDE_SHMEDIA
5020 if (seen_stt_datalabel)
5022 struct elf_sh_link_hash_entry *eh
5023 = (struct elf_sh_link_hash_entry *) h;
5025 eh->datalabel_got.refcount += 1;
5027 else
5028 #endif
5029 h->got.refcount += 1;
5030 old_tls_type = sh_elf_hash_entry (h)->tls_type;
5032 else
5034 bfd_signed_vma *local_got_refcounts;
5036 /* This is a global offset table entry for a local
5037 symbol. */
5038 local_got_refcounts = elf_local_got_refcounts (abfd);
5039 if (local_got_refcounts == NULL)
5041 bfd_size_type size;
5043 size = symtab_hdr->sh_info;
5044 size *= sizeof (bfd_signed_vma);
5045 #ifdef INCLUDE_SHMEDIA
5046 /* Reserve space for both the datalabel and
5047 codelabel local GOT offsets. */
5048 size *= 2;
5049 #endif
5050 size += symtab_hdr->sh_info;
5051 local_got_refcounts = ((bfd_signed_vma *)
5052 bfd_zalloc (abfd, size));
5053 if (local_got_refcounts == NULL)
5054 return FALSE;
5055 elf_local_got_refcounts (abfd) = local_got_refcounts;
5056 #ifdef INCLUDE_SHMEDIA
5057 /* Take care of both the datalabel and codelabel local
5058 GOT offsets. */
5059 sh_elf_local_got_tls_type (abfd)
5060 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
5061 #else
5062 sh_elf_local_got_tls_type (abfd)
5063 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5064 #endif
5066 #ifdef INCLUDE_SHMEDIA
5067 if (rel->r_addend & 1)
5068 local_got_refcounts[symtab_hdr->sh_info + r_symndx] += 1;
5069 else
5070 #endif
5071 local_got_refcounts[r_symndx] += 1;
5072 old_tls_type = sh_elf_local_got_tls_type (abfd) [r_symndx];
5075 /* If a TLS symbol is accessed using IE at least once,
5076 there is no point to use dynamic model for it. */
5077 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
5078 && (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
5080 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
5081 tls_type = GOT_TLS_IE;
5082 else
5084 (*_bfd_error_handler)
5085 (_("%B: `%s' accessed both as normal and thread local symbol"),
5086 abfd, h->root.root.string);
5087 return FALSE;
5091 if (old_tls_type != tls_type)
5093 if (h != NULL)
5094 sh_elf_hash_entry (h)->tls_type = tls_type;
5095 else
5096 sh_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
5099 break;
5101 case R_SH_TLS_LD_32:
5102 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5103 break;
5105 case R_SH_GOTPLT32:
5106 #ifdef INCLUDE_SHMEDIA
5107 case R_SH_GOTPLT_LOW16:
5108 case R_SH_GOTPLT_MEDLOW16:
5109 case R_SH_GOTPLT_MEDHI16:
5110 case R_SH_GOTPLT_HI16:
5111 case R_SH_GOTPLT10BY4:
5112 case R_SH_GOTPLT10BY8:
5113 #endif
5114 /* If this is a local symbol, we resolve it directly without
5115 creating a procedure linkage table entry. */
5117 if (h == NULL
5118 || h->forced_local
5119 || ! info->shared
5120 || info->symbolic
5121 || h->dynindx == -1)
5122 goto force_got;
5124 h->needs_plt = 1;
5125 h->plt.refcount += 1;
5126 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5128 break;
5130 case R_SH_PLT32:
5131 #ifdef INCLUDE_SHMEDIA
5132 case R_SH_PLT_LOW16:
5133 case R_SH_PLT_MEDLOW16:
5134 case R_SH_PLT_MEDHI16:
5135 case R_SH_PLT_HI16:
5136 #endif
5137 /* This symbol requires a procedure linkage table entry. We
5138 actually build the entry in adjust_dynamic_symbol,
5139 because this might be a case of linking PIC code which is
5140 never referenced by a dynamic object, in which case we
5141 don't need to generate a procedure linkage table entry
5142 after all. */
5144 /* If this is a local symbol, we resolve it directly without
5145 creating a procedure linkage table entry. */
5146 if (h == NULL)
5147 continue;
5149 if (h->forced_local)
5150 break;
5152 h->needs_plt = 1;
5153 h->plt.refcount += 1;
5154 break;
5156 case R_SH_DIR32:
5157 case R_SH_REL32:
5158 #ifdef INCLUDE_SHMEDIA
5159 case R_SH_IMM_LOW16_PCREL:
5160 case R_SH_IMM_MEDLOW16_PCREL:
5161 case R_SH_IMM_MEDHI16_PCREL:
5162 case R_SH_IMM_HI16_PCREL:
5163 #endif
5164 if (h != NULL && ! info->shared)
5166 h->non_got_ref = 1;
5167 h->plt.refcount += 1;
5170 /* If we are creating a shared library, and this is a reloc
5171 against a global symbol, or a non PC relative reloc
5172 against a local symbol, then we need to copy the reloc
5173 into the shared library. However, if we are linking with
5174 -Bsymbolic, we do not need to copy a reloc against a
5175 global symbol which is defined in an object we are
5176 including in the link (i.e., DEF_REGULAR is set). At
5177 this point we have not seen all the input files, so it is
5178 possible that DEF_REGULAR is not set now but will be set
5179 later (it is never cleared). We account for that
5180 possibility below by storing information in the
5181 dyn_relocs field of the hash table entry. A similar
5182 situation occurs when creating shared libraries and symbol
5183 visibility changes render the symbol local.
5185 If on the other hand, we are creating an executable, we
5186 may need to keep relocations for symbols satisfied by a
5187 dynamic library if we manage to avoid copy relocs for the
5188 symbol. */
5189 if ((info->shared
5190 && (sec->flags & SEC_ALLOC) != 0
5191 && (r_type != R_SH_REL32
5192 || (h != NULL
5193 && (! info->symbolic
5194 || h->root.type == bfd_link_hash_defweak
5195 || !h->def_regular))))
5196 || (! info->shared
5197 && (sec->flags & SEC_ALLOC) != 0
5198 && h != NULL
5199 && (h->root.type == bfd_link_hash_defweak
5200 || !h->def_regular)))
5202 struct elf_sh_dyn_relocs *p;
5203 struct elf_sh_dyn_relocs **head;
5205 if (htab->root.dynobj == NULL)
5206 htab->root.dynobj = abfd;
5208 /* When creating a shared object, we must copy these
5209 reloc types into the output file. We create a reloc
5210 section in dynobj and make room for this reloc. */
5211 if (sreloc == NULL)
5213 sreloc = _bfd_elf_make_dynamic_reloc_section
5214 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5216 if (sreloc == NULL)
5217 return FALSE;
5220 /* If this is a global symbol, we count the number of
5221 relocations we need for this symbol. */
5222 if (h != NULL)
5223 head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5224 else
5226 /* Track dynamic relocs needed for local syms too. */
5227 asection *s;
5228 void *vpp;
5229 Elf_Internal_Sym *isym;
5231 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5232 abfd, r_symndx);
5233 if (isym == NULL)
5234 return FALSE;
5236 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5237 if (s == NULL)
5238 s = sec;
5240 vpp = &elf_section_data (s)->local_dynrel;
5241 head = (struct elf_sh_dyn_relocs **) vpp;
5244 p = *head;
5245 if (p == NULL || p->sec != sec)
5247 bfd_size_type amt = sizeof (*p);
5248 p = bfd_alloc (htab->root.dynobj, amt);
5249 if (p == NULL)
5250 return FALSE;
5251 p->next = *head;
5252 *head = p;
5253 p->sec = sec;
5254 p->count = 0;
5255 p->pc_count = 0;
5258 p->count += 1;
5259 if (r_type == R_SH_REL32
5260 #ifdef INCLUDE_SHMEDIA
5261 || r_type == R_SH_IMM_LOW16_PCREL
5262 || r_type == R_SH_IMM_MEDLOW16_PCREL
5263 || r_type == R_SH_IMM_MEDHI16_PCREL
5264 || r_type == R_SH_IMM_HI16_PCREL
5265 #endif
5267 p->pc_count += 1;
5270 break;
5272 case R_SH_TLS_LE_32:
5273 if (info->shared)
5275 (*_bfd_error_handler)
5276 (_("%B: TLS local exec code cannot be linked into shared objects"),
5277 abfd);
5278 return FALSE;
5281 break;
5283 case R_SH_TLS_LDO_32:
5284 /* Nothing to do. */
5285 break;
5287 default:
5288 break;
5292 return TRUE;
5295 #ifndef sh_elf_set_mach_from_flags
5296 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5298 static bfd_boolean
5299 sh_elf_set_mach_from_flags (bfd *abfd)
5301 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5303 if (flags >= sizeof(sh_ef_bfd_table))
5304 return FALSE;
5306 if (sh_ef_bfd_table[flags] == 0)
5307 return FALSE;
5309 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5311 return TRUE;
5315 /* Reverse table lookup for sh_ef_bfd_table[].
5316 Given a bfd MACH value from archures.c
5317 return the equivalent ELF flags from the table.
5318 Return -1 if no match is found. */
5321 sh_elf_get_flags_from_mach (unsigned long mach)
5323 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5325 for (; i>0; i--)
5326 if (sh_ef_bfd_table[i] == mach)
5327 return i;
5329 /* shouldn't get here */
5330 BFD_FAIL();
5332 return -1;
5334 #endif /* not sh_elf_set_mach_from_flags */
5336 #ifndef sh_elf_set_private_flags
5337 /* Function to keep SH specific file flags. */
5339 static bfd_boolean
5340 sh_elf_set_private_flags (bfd *abfd, flagword flags)
5342 BFD_ASSERT (! elf_flags_init (abfd)
5343 || elf_elfheader (abfd)->e_flags == flags);
5345 elf_elfheader (abfd)->e_flags = flags;
5346 elf_flags_init (abfd) = TRUE;
5347 return sh_elf_set_mach_from_flags (abfd);
5349 #endif /* not sh_elf_set_private_flags */
5351 #ifndef sh_elf_copy_private_data
5352 /* Copy backend specific data from one object module to another */
5354 static bfd_boolean
5355 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5357 /* Copy object attributes. */
5358 _bfd_elf_copy_obj_attributes (ibfd, obfd);
5360 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5361 return TRUE;
5363 return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
5365 #endif /* not sh_elf_copy_private_data */
5367 #ifndef sh_elf_merge_private_data
5369 /* This function returns the ELF architecture number that
5370 corresponds to the given arch_sh* flags. */
5373 sh_find_elf_flags (unsigned int arch_set)
5375 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5376 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5378 return sh_elf_get_flags_from_mach (bfd_mach);
5381 /* This routine initialises the elf flags when required and
5382 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5384 static bfd_boolean
5385 sh_elf_merge_private_data (bfd *ibfd, bfd *obfd)
5387 extern bfd_boolean sh_merge_bfd_arch (bfd *, bfd *);
5389 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5390 return TRUE;
5392 if (! elf_flags_init (obfd))
5394 /* This happens when ld starts out with a 'blank' output file. */
5395 elf_flags_init (obfd) = TRUE;
5396 elf_elfheader (obfd)->e_flags = EF_SH1;
5397 sh_elf_set_mach_from_flags (obfd);
5400 if (! sh_merge_bfd_arch (ibfd, obfd))
5402 _bfd_error_handler ("%B: uses instructions which are incompatible "
5403 "with instructions used in previous modules",
5404 ibfd);
5405 bfd_set_error (bfd_error_bad_value);
5406 return FALSE;
5409 elf_elfheader (obfd)->e_flags =
5410 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5412 return TRUE;
5414 #endif /* not sh_elf_merge_private_data */
5416 /* Override the generic function because we need to store sh_elf_obj_tdata
5417 as the specific tdata. We set also the machine architecture from flags
5418 here. */
5420 static bfd_boolean
5421 sh_elf_object_p (bfd *abfd)
5423 return sh_elf_set_mach_from_flags (abfd);
5426 /* Finish up dynamic symbol handling. We set the contents of various
5427 dynamic sections here. */
5429 static bfd_boolean
5430 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5431 struct elf_link_hash_entry *h,
5432 Elf_Internal_Sym *sym)
5434 struct elf_sh_link_hash_table *htab;
5436 htab = sh_elf_hash_table (info);
5437 if (htab == NULL)
5438 return FALSE;
5440 if (h->plt.offset != (bfd_vma) -1)
5442 asection *splt;
5443 asection *sgot;
5444 asection *srel;
5446 bfd_vma plt_index;
5447 bfd_vma got_offset;
5448 Elf_Internal_Rela rel;
5449 bfd_byte *loc;
5451 /* This symbol has an entry in the procedure linkage table. Set
5452 it up. */
5454 BFD_ASSERT (h->dynindx != -1);
5456 splt = htab->splt;
5457 sgot = htab->sgotplt;
5458 srel = htab->srelplt;
5459 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
5461 /* Get the index in the procedure linkage table which
5462 corresponds to this symbol. This is the index of this symbol
5463 in all the symbols for which we are making plt entries. The
5464 first entry in the procedure linkage table is reserved. */
5465 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5467 /* Get the offset into the .got table of the entry that
5468 corresponds to this function. Each .got entry is 4 bytes.
5469 The first three are reserved. */
5470 got_offset = (plt_index + 3) * 4;
5472 #ifdef GOT_BIAS
5473 if (info->shared)
5474 got_offset -= GOT_BIAS;
5475 #endif
5477 /* Fill in the entry in the procedure linkage table. */
5478 memcpy (splt->contents + h->plt.offset,
5479 htab->plt_info->symbol_entry,
5480 htab->plt_info->symbol_entry_size);
5482 if (info->shared)
5483 install_plt_field (output_bfd, FALSE, got_offset,
5484 (splt->contents
5485 + h->plt.offset
5486 + htab->plt_info->symbol_fields.got_entry));
5487 else
5489 install_plt_field (output_bfd, FALSE,
5490 (sgot->output_section->vma
5491 + sgot->output_offset
5492 + got_offset),
5493 (splt->contents
5494 + h->plt.offset
5495 + htab->plt_info->symbol_fields.got_entry));
5496 if (htab->vxworks_p)
5498 unsigned int reachable_plts, plts_per_4k;
5499 int distance;
5501 /* Divide the PLT into groups. The first group contains
5502 REACHABLE_PLTS entries and the other groups contain
5503 PLTS_PER_4K entries. Entries in the first group can
5504 branch directly to .plt; those in later groups branch
5505 to the last element of the previous group. */
5506 /* ??? It would be better to create multiple copies of
5507 the common resolver stub. */
5508 reachable_plts = ((4096
5509 - htab->plt_info->plt0_entry_size
5510 - (htab->plt_info->symbol_fields.plt + 4))
5511 / htab->plt_info->symbol_entry_size) + 1;
5512 plts_per_4k = (4096 / htab->plt_info->symbol_entry_size);
5513 if (plt_index < reachable_plts)
5514 distance = -(h->plt.offset
5515 + htab->plt_info->symbol_fields.plt);
5516 else
5517 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
5518 * htab->plt_info->symbol_entry_size);
5520 /* Install the 'bra' with this offset. */
5521 bfd_put_16 (output_bfd,
5522 0xa000 | (0x0fff & ((distance - 4) / 2)),
5523 (splt->contents
5524 + h->plt.offset
5525 + htab->plt_info->symbol_fields.plt));
5527 else
5528 install_plt_field (output_bfd, TRUE,
5529 splt->output_section->vma + splt->output_offset,
5530 (splt->contents
5531 + h->plt.offset
5532 + htab->plt_info->symbol_fields.plt));
5535 #ifdef GOT_BIAS
5536 if (info->shared)
5537 got_offset += GOT_BIAS;
5538 #endif
5540 install_plt_field (output_bfd, FALSE,
5541 plt_index * sizeof (Elf32_External_Rela),
5542 (splt->contents
5543 + h->plt.offset
5544 + htab->plt_info->symbol_fields.reloc_offset));
5546 /* Fill in the entry in the global offset table. */
5547 bfd_put_32 (output_bfd,
5548 (splt->output_section->vma
5549 + splt->output_offset
5550 + h->plt.offset
5551 + htab->plt_info->symbol_resolve_offset),
5552 sgot->contents + got_offset);
5554 /* Fill in the entry in the .rela.plt section. */
5555 rel.r_offset = (sgot->output_section->vma
5556 + sgot->output_offset
5557 + got_offset);
5558 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
5559 rel.r_addend = 0;
5560 #ifdef GOT_BIAS
5561 rel.r_addend = GOT_BIAS;
5562 #endif
5563 loc = srel->contents + plt_index * sizeof (Elf32_External_Rela);
5564 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5566 if (htab->vxworks_p && !info->shared)
5568 /* Create the .rela.plt.unloaded relocations for this PLT entry.
5569 Begin by pointing LOC to the first such relocation. */
5570 loc = (htab->srelplt2->contents
5571 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
5573 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
5574 for the PLT entry's pointer to the .got.plt entry. */
5575 rel.r_offset = (htab->splt->output_section->vma
5576 + htab->splt->output_offset
5577 + h->plt.offset
5578 + htab->plt_info->symbol_fields.got_entry);
5579 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5580 rel.r_addend = got_offset;
5581 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5582 loc += sizeof (Elf32_External_Rela);
5584 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
5585 the .got.plt entry, which initially points to .plt. */
5586 rel.r_offset = (htab->sgotplt->output_section->vma
5587 + htab->sgotplt->output_offset
5588 + got_offset);
5589 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
5590 rel.r_addend = 0;
5591 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5594 if (!h->def_regular)
5596 /* Mark the symbol as undefined, rather than as defined in
5597 the .plt section. Leave the value alone. */
5598 sym->st_shndx = SHN_UNDEF;
5602 if (h->got.offset != (bfd_vma) -1
5603 && sh_elf_hash_entry (h)->tls_type != GOT_TLS_GD
5604 && sh_elf_hash_entry (h)->tls_type != GOT_TLS_IE)
5606 asection *sgot;
5607 asection *srel;
5608 Elf_Internal_Rela rel;
5609 bfd_byte *loc;
5611 /* This symbol has an entry in the global offset table. Set it
5612 up. */
5614 sgot = htab->sgot;
5615 srel = htab->srelgot;
5616 BFD_ASSERT (sgot != NULL && srel != NULL);
5618 rel.r_offset = (sgot->output_section->vma
5619 + sgot->output_offset
5620 + (h->got.offset &~ (bfd_vma) 1));
5622 /* If this is a static link, or it is a -Bsymbolic link and the
5623 symbol is defined locally or was forced to be local because
5624 of a version file, we just want to emit a RELATIVE reloc.
5625 The entry in the global offset table will already have been
5626 initialized in the relocate_section function. */
5627 if (info->shared
5628 && SYMBOL_REFERENCES_LOCAL (info, h))
5630 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5631 rel.r_addend = (h->root.u.def.value
5632 + h->root.u.def.section->output_section->vma
5633 + h->root.u.def.section->output_offset);
5635 else
5637 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5638 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5639 rel.r_addend = 0;
5642 loc = srel->contents;
5643 loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5644 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5647 #ifdef INCLUDE_SHMEDIA
5649 struct elf_sh_link_hash_entry *eh;
5651 eh = (struct elf_sh_link_hash_entry *) h;
5652 if (eh->datalabel_got.offset != (bfd_vma) -1)
5654 asection *sgot;
5655 asection *srel;
5656 Elf_Internal_Rela rel;
5657 bfd_byte *loc;
5659 /* This symbol has a datalabel entry in the global offset table.
5660 Set it up. */
5662 sgot = htab->sgot;
5663 srel = htab->srelgot;
5664 BFD_ASSERT (sgot != NULL && srel != NULL);
5666 rel.r_offset = (sgot->output_section->vma
5667 + sgot->output_offset
5668 + (eh->datalabel_got.offset &~ (bfd_vma) 1));
5670 /* If this is a static link, or it is a -Bsymbolic link and the
5671 symbol is defined locally or was forced to be local because
5672 of a version file, we just want to emit a RELATIVE reloc.
5673 The entry in the global offset table will already have been
5674 initialized in the relocate_section function. */
5675 if (info->shared
5676 && SYMBOL_REFERENCES_LOCAL (info, h))
5678 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5679 rel.r_addend = (h->root.u.def.value
5680 + h->root.u.def.section->output_section->vma
5681 + h->root.u.def.section->output_offset);
5683 else
5685 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents
5686 + eh->datalabel_got.offset);
5687 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5688 rel.r_addend = 0;
5691 loc = srel->contents;
5692 loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5693 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5696 #endif
5698 if (h->needs_copy)
5700 asection *s;
5701 Elf_Internal_Rela rel;
5702 bfd_byte *loc;
5704 /* This symbol needs a copy reloc. Set it up. */
5706 BFD_ASSERT (h->dynindx != -1
5707 && (h->root.type == bfd_link_hash_defined
5708 || h->root.type == bfd_link_hash_defweak));
5710 s = bfd_get_section_by_name (h->root.u.def.section->owner,
5711 ".rela.bss");
5712 BFD_ASSERT (s != NULL);
5714 rel.r_offset = (h->root.u.def.value
5715 + h->root.u.def.section->output_section->vma
5716 + h->root.u.def.section->output_offset);
5717 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
5718 rel.r_addend = 0;
5719 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5720 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5723 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
5724 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
5725 ".got" section. */
5726 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5727 || (!htab->vxworks_p && h == htab->root.hgot))
5728 sym->st_shndx = SHN_ABS;
5730 return TRUE;
5733 /* Finish up the dynamic sections. */
5735 static bfd_boolean
5736 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5738 struct elf_sh_link_hash_table *htab;
5739 asection *sgot;
5740 asection *sdyn;
5742 htab = sh_elf_hash_table (info);
5743 if (htab == NULL)
5744 return FALSE;
5746 sgot = htab->sgotplt;
5747 sdyn = bfd_get_section_by_name (htab->root.dynobj, ".dynamic");
5749 if (htab->root.dynamic_sections_created)
5751 asection *splt;
5752 Elf32_External_Dyn *dyncon, *dynconend;
5754 BFD_ASSERT (sgot != NULL && sdyn != NULL);
5756 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5757 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5758 for (; dyncon < dynconend; dyncon++)
5760 Elf_Internal_Dyn dyn;
5761 asection *s;
5762 #ifdef INCLUDE_SHMEDIA
5763 const char *name;
5764 #endif
5766 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
5768 switch (dyn.d_tag)
5770 default:
5771 if (htab->vxworks_p
5772 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
5773 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5774 break;
5776 #ifdef INCLUDE_SHMEDIA
5777 case DT_INIT:
5778 name = info->init_function;
5779 goto get_sym;
5781 case DT_FINI:
5782 name = info->fini_function;
5783 get_sym:
5784 if (dyn.d_un.d_val != 0)
5786 struct elf_link_hash_entry *h;
5788 h = elf_link_hash_lookup (&htab->root, name,
5789 FALSE, FALSE, TRUE);
5790 if (h != NULL && (h->other & STO_SH5_ISA32))
5792 dyn.d_un.d_val |= 1;
5793 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5796 break;
5797 #endif
5799 case DT_PLTGOT:
5800 s = htab->sgot->output_section;
5801 goto get_vma;
5803 case DT_JMPREL:
5804 s = htab->srelplt->output_section;
5805 get_vma:
5806 BFD_ASSERT (s != NULL);
5807 dyn.d_un.d_ptr = s->vma;
5808 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5809 break;
5811 case DT_PLTRELSZ:
5812 s = htab->srelplt->output_section;
5813 BFD_ASSERT (s != NULL);
5814 dyn.d_un.d_val = s->size;
5815 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5816 break;
5818 case DT_RELASZ:
5819 /* My reading of the SVR4 ABI indicates that the
5820 procedure linkage table relocs (DT_JMPREL) should be
5821 included in the overall relocs (DT_RELA). This is
5822 what Solaris does. However, UnixWare can not handle
5823 that case. Therefore, we override the DT_RELASZ entry
5824 here to make it not include the JMPREL relocs. Since
5825 the linker script arranges for .rela.plt to follow all
5826 other relocation sections, we don't have to worry
5827 about changing the DT_RELA entry. */
5828 if (htab->srelplt != NULL)
5830 s = htab->srelplt->output_section;
5831 dyn.d_un.d_val -= s->size;
5833 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5834 break;
5838 /* Fill in the first entry in the procedure linkage table. */
5839 splt = htab->splt;
5840 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
5842 unsigned int i;
5844 memcpy (splt->contents,
5845 htab->plt_info->plt0_entry,
5846 htab->plt_info->plt0_entry_size);
5847 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
5848 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
5849 install_plt_field (output_bfd, FALSE,
5850 (sgot->output_section->vma
5851 + sgot->output_offset
5852 + (i * 4)),
5853 (splt->contents
5854 + htab->plt_info->plt0_got_fields[i]));
5856 if (htab->vxworks_p)
5858 /* Finalize the .rela.plt.unloaded contents. */
5859 Elf_Internal_Rela rel;
5860 bfd_byte *loc;
5862 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
5863 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
5864 loc = htab->srelplt2->contents;
5865 rel.r_offset = (splt->output_section->vma
5866 + splt->output_offset
5867 + htab->plt_info->plt0_got_fields[2]);
5868 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5869 rel.r_addend = 8;
5870 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5871 loc += sizeof (Elf32_External_Rela);
5873 /* Fix up the remaining .rela.plt.unloaded relocations.
5874 They may have the wrong symbol index for _G_O_T_ or
5875 _P_L_T_ depending on the order in which symbols were
5876 output. */
5877 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
5879 /* The PLT entry's pointer to the .got.plt slot. */
5880 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5881 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
5882 R_SH_DIR32);
5883 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5884 loc += sizeof (Elf32_External_Rela);
5886 /* The .got.plt slot's pointer to .plt. */
5887 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5888 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
5889 R_SH_DIR32);
5890 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5891 loc += sizeof (Elf32_External_Rela);
5895 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5896 really seem like the right value. */
5897 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5901 /* Fill in the first three entries in the global offset table. */
5902 if (sgot && sgot->size > 0)
5904 if (sdyn == NULL)
5905 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5906 else
5907 bfd_put_32 (output_bfd,
5908 sdyn->output_section->vma + sdyn->output_offset,
5909 sgot->contents);
5910 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5911 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5913 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5916 return TRUE;
5919 static enum elf_reloc_type_class
5920 sh_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5922 switch ((int) ELF32_R_TYPE (rela->r_info))
5924 case R_SH_RELATIVE:
5925 return reloc_class_relative;
5926 case R_SH_JMP_SLOT:
5927 return reloc_class_plt;
5928 case R_SH_COPY:
5929 return reloc_class_copy;
5930 default:
5931 return reloc_class_normal;
5935 #if !defined SH_TARGET_ALREADY_DEFINED
5936 /* Support for Linux core dump NOTE sections. */
5938 static bfd_boolean
5939 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5941 int offset;
5942 unsigned int size;
5944 switch (note->descsz)
5946 default:
5947 return FALSE;
5949 case 168: /* Linux/SH */
5950 /* pr_cursig */
5951 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5953 /* pr_pid */
5954 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5956 /* pr_reg */
5957 offset = 72;
5958 size = 92;
5960 break;
5963 /* Make a ".reg/999" section. */
5964 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5965 size, note->descpos + offset);
5968 static bfd_boolean
5969 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5971 switch (note->descsz)
5973 default:
5974 return FALSE;
5976 case 124: /* Linux/SH elf_prpsinfo */
5977 elf_tdata (abfd)->core_program
5978 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
5979 elf_tdata (abfd)->core_command
5980 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
5983 /* Note that for some reason, a spurious space is tacked
5984 onto the end of the args in some (at least one anyway)
5985 implementations, so strip it off if it exists. */
5988 char *command = elf_tdata (abfd)->core_command;
5989 int n = strlen (command);
5991 if (0 < n && command[n - 1] == ' ')
5992 command[n - 1] = '\0';
5995 return TRUE;
5997 #endif /* not SH_TARGET_ALREADY_DEFINED */
6000 /* Return address for Ith PLT stub in section PLT, for relocation REL
6001 or (bfd_vma) -1 if it should not be included. */
6003 static bfd_vma
6004 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6005 const arelent *rel ATTRIBUTE_UNUSED)
6007 const struct elf_sh_plt_info *plt_info;
6009 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6010 return plt->vma + get_plt_offset (plt_info, i);
6013 #if !defined SH_TARGET_ALREADY_DEFINED
6014 #define TARGET_BIG_SYM bfd_elf32_sh_vec
6015 #define TARGET_BIG_NAME "elf32-sh"
6016 #define TARGET_LITTLE_SYM bfd_elf32_shl_vec
6017 #define TARGET_LITTLE_NAME "elf32-shl"
6018 #endif
6020 #define ELF_ARCH bfd_arch_sh
6021 #define ELF_MACHINE_CODE EM_SH
6022 #ifdef __QNXTARGET__
6023 #define ELF_MAXPAGESIZE 0x1000
6024 #else
6025 #define ELF_MAXPAGESIZE 0x80
6026 #endif
6028 #define elf_symbol_leading_char '_'
6030 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6031 #define bfd_elf32_bfd_reloc_name_lookup \
6032 sh_elf_reloc_name_lookup
6033 #define elf_info_to_howto sh_elf_info_to_howto
6034 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6035 #define elf_backend_relocate_section sh_elf_relocate_section
6036 #define bfd_elf32_bfd_get_relocated_section_contents \
6037 sh_elf_get_relocated_section_contents
6038 #define bfd_elf32_mkobject sh_elf_mkobject
6039 #define elf_backend_object_p sh_elf_object_p
6040 #define bfd_elf32_bfd_set_private_bfd_flags \
6041 sh_elf_set_private_flags
6042 #define bfd_elf32_bfd_copy_private_bfd_data \
6043 sh_elf_copy_private_data
6044 #define bfd_elf32_bfd_merge_private_bfd_data \
6045 sh_elf_merge_private_data
6047 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6048 #define elf_backend_gc_sweep_hook sh_elf_gc_sweep_hook
6049 #define elf_backend_check_relocs sh_elf_check_relocs
6050 #define elf_backend_copy_indirect_symbol \
6051 sh_elf_copy_indirect_symbol
6052 #define elf_backend_create_dynamic_sections \
6053 sh_elf_create_dynamic_sections
6054 #define bfd_elf32_bfd_link_hash_table_create \
6055 sh_elf_link_hash_table_create
6056 #define elf_backend_adjust_dynamic_symbol \
6057 sh_elf_adjust_dynamic_symbol
6058 #define elf_backend_always_size_sections \
6059 sh_elf_always_size_sections
6060 #define elf_backend_size_dynamic_sections \
6061 sh_elf_size_dynamic_sections
6062 #define elf_backend_omit_section_dynsym \
6063 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
6064 #define elf_backend_finish_dynamic_symbol \
6065 sh_elf_finish_dynamic_symbol
6066 #define elf_backend_finish_dynamic_sections \
6067 sh_elf_finish_dynamic_sections
6068 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6069 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6071 #define elf_backend_can_gc_sections 1
6072 #define elf_backend_can_refcount 1
6073 #define elf_backend_want_got_plt 1
6074 #define elf_backend_plt_readonly 1
6075 #define elf_backend_want_plt_sym 0
6076 #define elf_backend_got_header_size 12
6078 #if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
6080 #include "elf32-target.h"
6082 /* NetBSD support. */
6083 #undef TARGET_BIG_SYM
6084 #define TARGET_BIG_SYM bfd_elf32_shnbsd_vec
6085 #undef TARGET_BIG_NAME
6086 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6087 #undef TARGET_LITTLE_SYM
6088 #define TARGET_LITTLE_SYM bfd_elf32_shlnbsd_vec
6089 #undef TARGET_LITTLE_NAME
6090 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6091 #undef ELF_MAXPAGESIZE
6092 #define ELF_MAXPAGESIZE 0x10000
6093 #undef ELF_COMMONPAGESIZE
6094 #undef elf_symbol_leading_char
6095 #define elf_symbol_leading_char 0
6096 #undef elf32_bed
6097 #define elf32_bed elf32_sh_nbsd_bed
6099 #include "elf32-target.h"
6102 /* Linux support. */
6103 #undef TARGET_BIG_SYM
6104 #define TARGET_BIG_SYM bfd_elf32_shblin_vec
6105 #undef TARGET_BIG_NAME
6106 #define TARGET_BIG_NAME "elf32-shbig-linux"
6107 #undef TARGET_LITTLE_SYM
6108 #define TARGET_LITTLE_SYM bfd_elf32_shlin_vec
6109 #undef TARGET_LITTLE_NAME
6110 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6111 #undef ELF_COMMONPAGESIZE
6112 #define ELF_COMMONPAGESIZE 0x1000
6114 #undef elf_backend_grok_prstatus
6115 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6116 #undef elf_backend_grok_psinfo
6117 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6118 #undef elf32_bed
6119 #define elf32_bed elf32_sh_lin_bed
6121 #include "elf32-target.h"
6123 #undef TARGET_BIG_SYM
6124 #define TARGET_BIG_SYM bfd_elf32_shvxworks_vec
6125 #undef TARGET_BIG_NAME
6126 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6127 #undef TARGET_LITTLE_SYM
6128 #define TARGET_LITTLE_SYM bfd_elf32_shlvxworks_vec
6129 #undef TARGET_LITTLE_NAME
6130 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6131 #undef elf32_bed
6132 #define elf32_bed elf32_sh_vxworks_bed
6134 #undef elf_backend_want_plt_sym
6135 #define elf_backend_want_plt_sym 1
6136 #undef elf_symbol_leading_char
6137 #define elf_symbol_leading_char '_'
6138 #define elf_backend_want_got_underscore 1
6139 #undef elf_backend_grok_prstatus
6140 #undef elf_backend_grok_psinfo
6141 #undef elf_backend_add_symbol_hook
6142 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6143 #undef elf_backend_link_output_symbol_hook
6144 #define elf_backend_link_output_symbol_hook \
6145 elf_vxworks_link_output_symbol_hook
6146 #undef elf_backend_emit_relocs
6147 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6148 #undef elf_backend_final_write_processing
6149 #define elf_backend_final_write_processing \
6150 elf_vxworks_final_write_processing
6151 #undef ELF_MAXPAGESIZE
6152 #define ELF_MAXPAGESIZE 0x1000
6153 #undef ELF_COMMONPAGESIZE
6155 #include "elf32-target.h"
6157 #endif /* neither INCLUDE_SHMEDIA nor SH_TARGET_ALREADY_DEFINED */