binutils/
[binutils.git] / bfd / elf32-sh.c
blob89cef677696d8dd208870328023dab0553f8ab74
1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008 Free Software Foundation, Inc.
4 Contributed by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "elf-vxworks.h"
29 #include "elf/sh.h"
30 #include "libiberty.h"
31 #include "../opcodes/sh-opc.h"
33 static bfd_reloc_status_type sh_elf_reloc
34 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
35 static bfd_reloc_status_type sh_elf_ignore_reloc
36 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
37 static bfd_boolean sh_elf_relax_delete_bytes
38 (bfd *, asection *, bfd_vma, int);
39 static bfd_boolean sh_elf_align_loads
40 (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_boolean *);
41 #ifndef SH64_ELF
42 static bfd_boolean sh_elf_swap_insns
43 (bfd *, asection *, void *, bfd_byte *, bfd_vma);
44 #endif
45 static int sh_elf_optimized_tls_reloc
46 (struct bfd_link_info *, int, int);
47 static bfd_vma dtpoff_base
48 (struct bfd_link_info *);
49 static bfd_vma tpoff
50 (struct bfd_link_info *, bfd_vma);
52 /* The name of the dynamic interpreter. This is put in the .interp
53 section. */
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
57 #define MINUS_ONE ((bfd_vma) 0 - 1)
59 #define SH_PARTIAL32 TRUE
60 #define SH_SRC_MASK32 0xffffffff
61 #define SH_ELF_RELOC sh_elf_reloc
62 static reloc_howto_type sh_elf_howto_table[] =
64 #include "elf32-sh-relocs.h"
67 #define SH_PARTIAL32 FALSE
68 #define SH_SRC_MASK32 0
69 #define SH_ELF_RELOC bfd_elf_generic_reloc
70 static reloc_howto_type sh_vxworks_howto_table[] =
72 #include "elf32-sh-relocs.h"
75 /* Return true if OUTPUT_BFD is a VxWorks object. */
77 static bfd_boolean
78 vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
80 #if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
81 extern const bfd_target bfd_elf32_shlvxworks_vec;
82 extern const bfd_target bfd_elf32_shvxworks_vec;
84 return (abfd->xvec == &bfd_elf32_shlvxworks_vec
85 || abfd->xvec == &bfd_elf32_shvxworks_vec);
86 #else
87 return FALSE;
88 #endif
91 /* Return the howto table for ABFD. */
93 static reloc_howto_type *
94 get_howto_table (bfd *abfd)
96 if (vxworks_object_p (abfd))
97 return sh_vxworks_howto_table;
98 return sh_elf_howto_table;
101 static bfd_reloc_status_type
102 sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd,
103 asection *input_section, bfd_byte *contents,
104 bfd_vma addr, asection *symbol_section,
105 bfd_vma start, bfd_vma end)
107 static bfd_vma last_addr;
108 static asection *last_symbol_section;
109 bfd_byte *start_ptr, *ptr, *last_ptr;
110 int diff, cum_diff;
111 bfd_signed_vma x;
112 int insn;
114 /* Sanity check the address. */
115 if (addr > bfd_get_section_limit (input_bfd, input_section))
116 return bfd_reloc_outofrange;
118 /* We require the start and end relocations to be processed consecutively -
119 although we allow then to be processed forwards or backwards. */
120 if (! last_addr)
122 last_addr = addr;
123 last_symbol_section = symbol_section;
124 return bfd_reloc_ok;
126 if (last_addr != addr)
127 abort ();
128 last_addr = 0;
130 if (! symbol_section || last_symbol_section != symbol_section || end < start)
131 return bfd_reloc_outofrange;
133 /* Get the symbol_section contents. */
134 if (symbol_section != input_section)
136 if (elf_section_data (symbol_section)->this_hdr.contents != NULL)
137 contents = elf_section_data (symbol_section)->this_hdr.contents;
138 else
140 if (!bfd_malloc_and_get_section (input_bfd, symbol_section,
141 &contents))
143 if (contents != NULL)
144 free (contents);
145 return bfd_reloc_outofrange;
149 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
150 start_ptr = contents + start;
151 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
153 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
154 ptr -= 2;
155 ptr += 2;
156 diff = (last_ptr - ptr) >> 1;
157 cum_diff += diff & 1;
158 cum_diff += diff;
160 /* Calculate the start / end values to load into rs / re minus four -
161 so that will cancel out the four we would otherwise have to add to
162 addr to get the value to subtract in order to get relative addressing. */
163 if (cum_diff >= 0)
165 start -= 4;
166 end = (ptr + cum_diff * 2) - contents;
168 else
170 bfd_vma start0 = start - 4;
172 while (start0 && IS_PPI (contents + start0))
173 start0 -= 2;
174 start0 = start - 2 - ((start - start0) & 2);
175 start = start0 - cum_diff - 2;
176 end = start0;
179 if (contents != NULL
180 && elf_section_data (symbol_section)->this_hdr.contents != contents)
181 free (contents);
183 insn = bfd_get_16 (input_bfd, contents + addr);
185 x = (insn & 0x200 ? end : start) - addr;
186 if (input_section != symbol_section)
187 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
188 - (input_section->output_section->vma
189 + input_section->output_offset));
190 x >>= 1;
191 if (x < -128 || x > 127)
192 return bfd_reloc_overflow;
194 x = (insn & ~0xff) | (x & 0xff);
195 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
197 return bfd_reloc_ok;
200 /* This function is used for normal relocs. This used to be like the COFF
201 function, and is almost certainly incorrect for other ELF targets. */
203 static bfd_reloc_status_type
204 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
205 void *data, asection *input_section, bfd *output_bfd,
206 char **error_message ATTRIBUTE_UNUSED)
208 unsigned long insn;
209 bfd_vma sym_value;
210 enum elf_sh_reloc_type r_type;
211 bfd_vma addr = reloc_entry->address;
212 bfd_byte *hit_data = addr + (bfd_byte *) data;
214 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
216 if (output_bfd != NULL)
218 /* Partial linking--do nothing. */
219 reloc_entry->address += input_section->output_offset;
220 return bfd_reloc_ok;
223 /* Almost all relocs have to do with relaxing. If any work must be
224 done for them, it has been done in sh_relax_section. */
225 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
226 return bfd_reloc_ok;
228 if (symbol_in != NULL
229 && bfd_is_und_section (symbol_in->section))
230 return bfd_reloc_undefined;
232 if (bfd_is_com_section (symbol_in->section))
233 sym_value = 0;
234 else
235 sym_value = (symbol_in->value +
236 symbol_in->section->output_section->vma +
237 symbol_in->section->output_offset);
239 switch (r_type)
241 case R_SH_DIR32:
242 insn = bfd_get_32 (abfd, hit_data);
243 insn += sym_value + reloc_entry->addend;
244 bfd_put_32 (abfd, (bfd_vma) insn, hit_data);
245 break;
246 case R_SH_IND12W:
247 insn = bfd_get_16 (abfd, hit_data);
248 sym_value += reloc_entry->addend;
249 sym_value -= (input_section->output_section->vma
250 + input_section->output_offset
251 + addr
252 + 4);
253 sym_value += (insn & 0xfff) << 1;
254 if (insn & 0x800)
255 sym_value -= 0x1000;
256 insn = (insn & 0xf000) | (sym_value & 0xfff);
257 bfd_put_16 (abfd, (bfd_vma) insn, hit_data);
258 if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000)
259 return bfd_reloc_overflow;
260 break;
261 default:
262 abort ();
263 break;
266 return bfd_reloc_ok;
269 /* This function is used for relocs which are only used for relaxing,
270 which the linker should otherwise ignore. */
272 static bfd_reloc_status_type
273 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
274 asymbol *symbol ATTRIBUTE_UNUSED,
275 void *data ATTRIBUTE_UNUSED, asection *input_section,
276 bfd *output_bfd,
277 char **error_message ATTRIBUTE_UNUSED)
279 if (output_bfd != NULL)
280 reloc_entry->address += input_section->output_offset;
281 return bfd_reloc_ok;
284 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
286 struct elf_reloc_map
288 bfd_reloc_code_real_type bfd_reloc_val;
289 unsigned char elf_reloc_val;
292 /* An array mapping BFD reloc codes to SH ELF relocs. */
294 static const struct elf_reloc_map sh_reloc_map[] =
296 { BFD_RELOC_NONE, R_SH_NONE },
297 { BFD_RELOC_32, R_SH_DIR32 },
298 { BFD_RELOC_16, R_SH_DIR16 },
299 { BFD_RELOC_8, R_SH_DIR8 },
300 { BFD_RELOC_CTOR, R_SH_DIR32 },
301 { BFD_RELOC_32_PCREL, R_SH_REL32 },
302 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
303 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
304 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
305 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
306 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
307 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
308 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
309 { BFD_RELOC_SH_USES, R_SH_USES },
310 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
311 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
312 { BFD_RELOC_SH_CODE, R_SH_CODE },
313 { BFD_RELOC_SH_DATA, R_SH_DATA },
314 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
315 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
316 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
317 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
318 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
319 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
320 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
321 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
322 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
323 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
324 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
325 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
326 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
327 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
328 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
329 { BFD_RELOC_SH_COPY, R_SH_COPY },
330 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
331 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
332 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
333 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
334 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
335 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
336 #ifdef INCLUDE_SHMEDIA
337 { BFD_RELOC_SH_GOT_LOW16, R_SH_GOT_LOW16 },
338 { BFD_RELOC_SH_GOT_MEDLOW16, R_SH_GOT_MEDLOW16 },
339 { BFD_RELOC_SH_GOT_MEDHI16, R_SH_GOT_MEDHI16 },
340 { BFD_RELOC_SH_GOT_HI16, R_SH_GOT_HI16 },
341 { BFD_RELOC_SH_GOTPLT_LOW16, R_SH_GOTPLT_LOW16 },
342 { BFD_RELOC_SH_GOTPLT_MEDLOW16, R_SH_GOTPLT_MEDLOW16 },
343 { BFD_RELOC_SH_GOTPLT_MEDHI16, R_SH_GOTPLT_MEDHI16 },
344 { BFD_RELOC_SH_GOTPLT_HI16, R_SH_GOTPLT_HI16 },
345 { BFD_RELOC_SH_PLT_LOW16, R_SH_PLT_LOW16 },
346 { BFD_RELOC_SH_PLT_MEDLOW16, R_SH_PLT_MEDLOW16 },
347 { BFD_RELOC_SH_PLT_MEDHI16, R_SH_PLT_MEDHI16 },
348 { BFD_RELOC_SH_PLT_HI16, R_SH_PLT_HI16 },
349 { BFD_RELOC_SH_GOTOFF_LOW16, R_SH_GOTOFF_LOW16 },
350 { BFD_RELOC_SH_GOTOFF_MEDLOW16, R_SH_GOTOFF_MEDLOW16 },
351 { BFD_RELOC_SH_GOTOFF_MEDHI16, R_SH_GOTOFF_MEDHI16 },
352 { BFD_RELOC_SH_GOTOFF_HI16, R_SH_GOTOFF_HI16 },
353 { BFD_RELOC_SH_GOTPC_LOW16, R_SH_GOTPC_LOW16 },
354 { BFD_RELOC_SH_GOTPC_MEDLOW16, R_SH_GOTPC_MEDLOW16 },
355 { BFD_RELOC_SH_GOTPC_MEDHI16, R_SH_GOTPC_MEDHI16 },
356 { BFD_RELOC_SH_GOTPC_HI16, R_SH_GOTPC_HI16 },
357 { BFD_RELOC_SH_COPY64, R_SH_COPY64 },
358 { BFD_RELOC_SH_GLOB_DAT64, R_SH_GLOB_DAT64 },
359 { BFD_RELOC_SH_JMP_SLOT64, R_SH_JMP_SLOT64 },
360 { BFD_RELOC_SH_RELATIVE64, R_SH_RELATIVE64 },
361 { BFD_RELOC_SH_GOT10BY4, R_SH_GOT10BY4 },
362 { BFD_RELOC_SH_GOT10BY8, R_SH_GOT10BY8 },
363 { BFD_RELOC_SH_GOTPLT10BY4, R_SH_GOTPLT10BY4 },
364 { BFD_RELOC_SH_GOTPLT10BY8, R_SH_GOTPLT10BY8 },
365 { BFD_RELOC_SH_PT_16, R_SH_PT_16 },
366 { BFD_RELOC_SH_SHMEDIA_CODE, R_SH_SHMEDIA_CODE },
367 { BFD_RELOC_SH_IMMU5, R_SH_DIR5U },
368 { BFD_RELOC_SH_IMMS6, R_SH_DIR6S },
369 { BFD_RELOC_SH_IMMU6, R_SH_DIR6U },
370 { BFD_RELOC_SH_IMMS10, R_SH_DIR10S },
371 { BFD_RELOC_SH_IMMS10BY2, R_SH_DIR10SW },
372 { BFD_RELOC_SH_IMMS10BY4, R_SH_DIR10SL },
373 { BFD_RELOC_SH_IMMS10BY8, R_SH_DIR10SQ },
374 { BFD_RELOC_SH_IMMS16, R_SH_IMMS16 },
375 { BFD_RELOC_SH_IMMU16, R_SH_IMMU16 },
376 { BFD_RELOC_SH_IMM_LOW16, R_SH_IMM_LOW16 },
377 { BFD_RELOC_SH_IMM_LOW16_PCREL, R_SH_IMM_LOW16_PCREL },
378 { BFD_RELOC_SH_IMM_MEDLOW16, R_SH_IMM_MEDLOW16 },
379 { BFD_RELOC_SH_IMM_MEDLOW16_PCREL, R_SH_IMM_MEDLOW16_PCREL },
380 { BFD_RELOC_SH_IMM_MEDHI16, R_SH_IMM_MEDHI16 },
381 { BFD_RELOC_SH_IMM_MEDHI16_PCREL, R_SH_IMM_MEDHI16_PCREL },
382 { BFD_RELOC_SH_IMM_HI16, R_SH_IMM_HI16 },
383 { BFD_RELOC_SH_IMM_HI16_PCREL, R_SH_IMM_HI16_PCREL },
384 { BFD_RELOC_64, R_SH_64 },
385 { BFD_RELOC_64_PCREL, R_SH_64_PCREL },
386 #endif /* not INCLUDE_SHMEDIA */
389 /* Given a BFD reloc code, return the howto structure for the
390 corresponding SH ELF reloc. */
392 static reloc_howto_type *
393 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
395 unsigned int i;
397 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
399 if (sh_reloc_map[i].bfd_reloc_val == code)
400 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
403 return NULL;
406 static reloc_howto_type *
407 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
409 unsigned int i;
411 if (vxworks_object_p (abfd))
413 for (i = 0;
414 i < (sizeof (sh_vxworks_howto_table)
415 / sizeof (sh_vxworks_howto_table[0]));
416 i++)
417 if (sh_vxworks_howto_table[i].name != NULL
418 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
419 return &sh_vxworks_howto_table[i];
421 else
423 for (i = 0;
424 i < (sizeof (sh_elf_howto_table)
425 / sizeof (sh_elf_howto_table[0]));
426 i++)
427 if (sh_elf_howto_table[i].name != NULL
428 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
429 return &sh_elf_howto_table[i];
432 return NULL;
435 /* Given an ELF reloc, fill in the howto field of a relent. */
437 static void
438 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
440 unsigned int r;
442 r = ELF32_R_TYPE (dst->r_info);
444 BFD_ASSERT (r < (unsigned int) R_SH_max);
445 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC);
446 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2);
447 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_3 || r > R_SH_LAST_INVALID_RELOC_3);
448 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_4 || r > R_SH_LAST_INVALID_RELOC_4);
449 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_5 || r > R_SH_LAST_INVALID_RELOC_5);
451 cache_ptr->howto = get_howto_table (abfd) + r;
454 /* This function handles relaxing for SH ELF. See the corresponding
455 function in coff-sh.c for a description of what this does. FIXME:
456 There is a lot of duplication here between this code and the COFF
457 specific code. The format of relocs and symbols is wound deeply
458 into this code, but it would still be better if the duplication
459 could be eliminated somehow. Note in particular that although both
460 functions use symbols like R_SH_CODE, those symbols have different
461 values; in coff-sh.c they come from include/coff/sh.h, whereas here
462 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
464 static bfd_boolean
465 sh_elf_relax_section (bfd *abfd, asection *sec,
466 struct bfd_link_info *link_info, bfd_boolean *again)
468 Elf_Internal_Shdr *symtab_hdr;
469 Elf_Internal_Rela *internal_relocs;
470 bfd_boolean have_code;
471 Elf_Internal_Rela *irel, *irelend;
472 bfd_byte *contents = NULL;
473 Elf_Internal_Sym *isymbuf = NULL;
475 *again = FALSE;
477 if (link_info->relocatable
478 || (sec->flags & SEC_RELOC) == 0
479 || sec->reloc_count == 0)
480 return TRUE;
482 #ifdef INCLUDE_SHMEDIA
483 if (elf_section_data (sec)->this_hdr.sh_flags
484 & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED))
486 return TRUE;
488 #endif
490 symtab_hdr = &elf_symtab_hdr (abfd);
492 internal_relocs = (_bfd_elf_link_read_relocs
493 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
494 link_info->keep_memory));
495 if (internal_relocs == NULL)
496 goto error_return;
498 have_code = FALSE;
500 irelend = internal_relocs + sec->reloc_count;
501 for (irel = internal_relocs; irel < irelend; irel++)
503 bfd_vma laddr, paddr, symval;
504 unsigned short insn;
505 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
506 bfd_signed_vma foff;
508 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
509 have_code = TRUE;
511 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
512 continue;
514 /* Get the section contents. */
515 if (contents == NULL)
517 if (elf_section_data (sec)->this_hdr.contents != NULL)
518 contents = elf_section_data (sec)->this_hdr.contents;
519 else
521 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
522 goto error_return;
526 /* The r_addend field of the R_SH_USES reloc will point us to
527 the register load. The 4 is because the r_addend field is
528 computed as though it were a jump offset, which are based
529 from 4 bytes after the jump instruction. */
530 laddr = irel->r_offset + 4 + irel->r_addend;
531 if (laddr >= sec->size)
533 (*_bfd_error_handler) (_("%B: 0x%lx: warning: bad R_SH_USES offset"),
534 abfd,
535 (unsigned long) irel->r_offset);
536 continue;
538 insn = bfd_get_16 (abfd, contents + laddr);
540 /* If the instruction is not mov.l NN,rN, we don't know what to
541 do. */
542 if ((insn & 0xf000) != 0xd000)
544 ((*_bfd_error_handler)
545 (_("%B: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x"),
546 abfd, (unsigned long) irel->r_offset, insn));
547 continue;
550 /* Get the address from which the register is being loaded. The
551 displacement in the mov.l instruction is quadrupled. It is a
552 displacement from four bytes after the movl instruction, but,
553 before adding in the PC address, two least significant bits
554 of the PC are cleared. We assume that the section is aligned
555 on a four byte boundary. */
556 paddr = insn & 0xff;
557 paddr *= 4;
558 paddr += (laddr + 4) &~ (bfd_vma) 3;
559 if (paddr >= sec->size)
561 ((*_bfd_error_handler)
562 (_("%B: 0x%lx: warning: bad R_SH_USES load offset"),
563 abfd, (unsigned long) irel->r_offset));
564 continue;
567 /* Get the reloc for the address from which the register is
568 being loaded. This reloc will tell us which function is
569 actually being called. */
570 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
571 if (irelfn->r_offset == paddr
572 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
573 break;
574 if (irelfn >= irelend)
576 ((*_bfd_error_handler)
577 (_("%B: 0x%lx: warning: could not find expected reloc"),
578 abfd, (unsigned long) paddr));
579 continue;
582 /* Read this BFD's symbols if we haven't done so already. */
583 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
585 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
586 if (isymbuf == NULL)
587 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
588 symtab_hdr->sh_info, 0,
589 NULL, NULL, NULL);
590 if (isymbuf == NULL)
591 goto error_return;
594 /* Get the value of the symbol referred to by the reloc. */
595 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
597 /* A local symbol. */
598 Elf_Internal_Sym *isym;
600 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
601 if (isym->st_shndx
602 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
604 ((*_bfd_error_handler)
605 (_("%B: 0x%lx: warning: symbol in unexpected section"),
606 abfd, (unsigned long) paddr));
607 continue;
610 symval = (isym->st_value
611 + sec->output_section->vma
612 + sec->output_offset);
614 else
616 unsigned long indx;
617 struct elf_link_hash_entry *h;
619 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
620 h = elf_sym_hashes (abfd)[indx];
621 BFD_ASSERT (h != NULL);
622 if (h->root.type != bfd_link_hash_defined
623 && h->root.type != bfd_link_hash_defweak)
625 /* This appears to be a reference to an undefined
626 symbol. Just ignore it--it will be caught by the
627 regular reloc processing. */
628 continue;
631 symval = (h->root.u.def.value
632 + h->root.u.def.section->output_section->vma
633 + h->root.u.def.section->output_offset);
636 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
637 symval += bfd_get_32 (abfd, contents + paddr);
638 else
639 symval += irelfn->r_addend;
641 /* See if this function call can be shortened. */
642 foff = (symval
643 - (irel->r_offset
644 + sec->output_section->vma
645 + sec->output_offset
646 + 4));
647 /* A branch to an address beyond ours might be increased by an
648 .align that doesn't move when bytes behind us are deleted.
649 So, we add some slop in this calculation to allow for
650 that. */
651 if (foff < -0x1000 || foff >= 0x1000 - 8)
653 /* After all that work, we can't shorten this function call. */
654 continue;
657 /* Shorten the function call. */
659 /* For simplicity of coding, we are going to modify the section
660 contents, the section relocs, and the BFD symbol table. We
661 must tell the rest of the code not to free up this
662 information. It would be possible to instead create a table
663 of changes which have to be made, as is done in coff-mips.c;
664 that would be more work, but would require less memory when
665 the linker is run. */
667 elf_section_data (sec)->relocs = internal_relocs;
668 elf_section_data (sec)->this_hdr.contents = contents;
669 symtab_hdr->contents = (unsigned char *) isymbuf;
671 /* Replace the jsr with a bsr. */
673 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
674 replace the jsr with a bsr. */
675 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
676 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
677 here, but that only checks if the symbol is an external symbol,
678 not if the symbol is in a different section. Besides, we need
679 a consistent meaning for the relocation, so we just assume here that
680 the value of the symbol is not available. */
682 /* We can't fully resolve this yet, because the external
683 symbol value may be changed by future relaxing. We let
684 the final link phase handle it. */
685 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
687 irel->r_addend = -4;
689 /* When we calculated the symbol "value" we had an offset in the
690 DIR32's word in memory (we read and add it above). However,
691 the jsr we create does NOT have this offset encoded, so we
692 have to add it to the addend to preserve it. */
693 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
695 /* See if there is another R_SH_USES reloc referring to the same
696 register load. */
697 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
698 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
699 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
700 break;
701 if (irelscan < irelend)
703 /* Some other function call depends upon this register load,
704 and we have not yet converted that function call.
705 Indeed, we may never be able to convert it. There is
706 nothing else we can do at this point. */
707 continue;
710 /* Look for a R_SH_COUNT reloc on the location where the
711 function address is stored. Do this before deleting any
712 bytes, to avoid confusion about the address. */
713 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
714 if (irelcount->r_offset == paddr
715 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
716 break;
718 /* Delete the register load. */
719 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
720 goto error_return;
722 /* That will change things, so, just in case it permits some
723 other function call to come within range, we should relax
724 again. Note that this is not required, and it may be slow. */
725 *again = TRUE;
727 /* Now check whether we got a COUNT reloc. */
728 if (irelcount >= irelend)
730 ((*_bfd_error_handler)
731 (_("%B: 0x%lx: warning: could not find expected COUNT reloc"),
732 abfd, (unsigned long) paddr));
733 continue;
736 /* The number of uses is stored in the r_addend field. We've
737 just deleted one. */
738 if (irelcount->r_addend == 0)
740 ((*_bfd_error_handler) (_("%B: 0x%lx: warning: bad count"),
741 abfd,
742 (unsigned long) paddr));
743 continue;
746 --irelcount->r_addend;
748 /* If there are no more uses, we can delete the address. Reload
749 the address from irelfn, in case it was changed by the
750 previous call to sh_elf_relax_delete_bytes. */
751 if (irelcount->r_addend == 0)
753 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
754 goto error_return;
757 /* We've done all we can with that function call. */
760 /* Look for load and store instructions that we can align on four
761 byte boundaries. */
762 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
763 && have_code)
765 bfd_boolean swapped;
767 /* Get the section contents. */
768 if (contents == NULL)
770 if (elf_section_data (sec)->this_hdr.contents != NULL)
771 contents = elf_section_data (sec)->this_hdr.contents;
772 else
774 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
775 goto error_return;
779 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
780 &swapped))
781 goto error_return;
783 if (swapped)
785 elf_section_data (sec)->relocs = internal_relocs;
786 elf_section_data (sec)->this_hdr.contents = contents;
787 symtab_hdr->contents = (unsigned char *) isymbuf;
791 if (isymbuf != NULL
792 && symtab_hdr->contents != (unsigned char *) isymbuf)
794 if (! link_info->keep_memory)
795 free (isymbuf);
796 else
798 /* Cache the symbols for elf_link_input_bfd. */
799 symtab_hdr->contents = (unsigned char *) isymbuf;
803 if (contents != NULL
804 && elf_section_data (sec)->this_hdr.contents != contents)
806 if (! link_info->keep_memory)
807 free (contents);
808 else
810 /* Cache the section contents for elf_link_input_bfd. */
811 elf_section_data (sec)->this_hdr.contents = contents;
815 if (internal_relocs != NULL
816 && elf_section_data (sec)->relocs != internal_relocs)
817 free (internal_relocs);
819 return TRUE;
821 error_return:
822 if (isymbuf != NULL
823 && symtab_hdr->contents != (unsigned char *) isymbuf)
824 free (isymbuf);
825 if (contents != NULL
826 && elf_section_data (sec)->this_hdr.contents != contents)
827 free (contents);
828 if (internal_relocs != NULL
829 && elf_section_data (sec)->relocs != internal_relocs)
830 free (internal_relocs);
832 return FALSE;
835 /* Delete some bytes from a section while relaxing. FIXME: There is a
836 lot of duplication between this function and sh_relax_delete_bytes
837 in coff-sh.c. */
839 static bfd_boolean
840 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
841 int count)
843 Elf_Internal_Shdr *symtab_hdr;
844 unsigned int sec_shndx;
845 bfd_byte *contents;
846 Elf_Internal_Rela *irel, *irelend;
847 Elf_Internal_Rela *irelalign;
848 bfd_vma toaddr;
849 Elf_Internal_Sym *isymbuf, *isym, *isymend;
850 struct elf_link_hash_entry **sym_hashes;
851 struct elf_link_hash_entry **end_hashes;
852 unsigned int symcount;
853 asection *o;
855 symtab_hdr = &elf_symtab_hdr (abfd);
856 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
858 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
860 contents = elf_section_data (sec)->this_hdr.contents;
862 /* The deletion must stop at the next ALIGN reloc for an aligment
863 power larger than the number of bytes we are deleting. */
865 irelalign = NULL;
866 toaddr = sec->size;
868 irel = elf_section_data (sec)->relocs;
869 irelend = irel + sec->reloc_count;
870 for (; irel < irelend; irel++)
872 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
873 && irel->r_offset > addr
874 && count < (1 << irel->r_addend))
876 irelalign = irel;
877 toaddr = irel->r_offset;
878 break;
882 /* Actually delete the bytes. */
883 memmove (contents + addr, contents + addr + count,
884 (size_t) (toaddr - addr - count));
885 if (irelalign == NULL)
886 sec->size -= count;
887 else
889 int i;
891 #define NOP_OPCODE (0x0009)
893 BFD_ASSERT ((count & 1) == 0);
894 for (i = 0; i < count; i += 2)
895 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
898 /* Adjust all the relocs. */
899 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
901 bfd_vma nraddr, stop;
902 bfd_vma start = 0;
903 int insn = 0;
904 int off, adjust, oinsn;
905 bfd_signed_vma voff = 0;
906 bfd_boolean overflow;
908 /* Get the new reloc address. */
909 nraddr = irel->r_offset;
910 if ((irel->r_offset > addr
911 && irel->r_offset < toaddr)
912 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
913 && irel->r_offset == toaddr))
914 nraddr -= count;
916 /* See if this reloc was for the bytes we have deleted, in which
917 case we no longer care about it. Don't delete relocs which
918 represent addresses, though. */
919 if (irel->r_offset >= addr
920 && irel->r_offset < addr + count
921 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
922 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
923 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
924 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
925 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
926 (int) R_SH_NONE);
928 /* If this is a PC relative reloc, see if the range it covers
929 includes the bytes we have deleted. */
930 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
932 default:
933 break;
935 case R_SH_DIR8WPN:
936 case R_SH_IND12W:
937 case R_SH_DIR8WPZ:
938 case R_SH_DIR8WPL:
939 start = irel->r_offset;
940 insn = bfd_get_16 (abfd, contents + nraddr);
941 break;
944 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
946 default:
947 start = stop = addr;
948 break;
950 case R_SH_DIR32:
951 /* If this reloc is against a symbol defined in this
952 section, and the symbol will not be adjusted below, we
953 must check the addend to see it will put the value in
954 range to be adjusted, and hence must be changed. */
955 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
957 isym = isymbuf + ELF32_R_SYM (irel->r_info);
958 if (isym->st_shndx == sec_shndx
959 && (isym->st_value <= addr
960 || isym->st_value >= toaddr))
962 bfd_vma val;
964 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
966 val = bfd_get_32 (abfd, contents + nraddr);
967 val += isym->st_value;
968 if (val > addr && val < toaddr)
969 bfd_put_32 (abfd, val - count, contents + nraddr);
971 else
973 val = isym->st_value + irel->r_addend;
974 if (val > addr && val < toaddr)
975 irel->r_addend -= count;
979 start = stop = addr;
980 break;
982 case R_SH_DIR8WPN:
983 off = insn & 0xff;
984 if (off & 0x80)
985 off -= 0x100;
986 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
987 break;
989 case R_SH_IND12W:
990 off = insn & 0xfff;
991 if (! off)
993 /* This has been made by previous relaxation. Since the
994 relocation will be against an external symbol, the
995 final relocation will just do the right thing. */
996 start = stop = addr;
998 else
1000 if (off & 0x800)
1001 off -= 0x1000;
1002 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
1004 /* The addend will be against the section symbol, thus
1005 for adjusting the addend, the relevant start is the
1006 start of the section.
1007 N.B. If we want to abandon in-place changes here and
1008 test directly using symbol + addend, we have to take into
1009 account that the addend has already been adjusted by -4. */
1010 if (stop > addr && stop < toaddr)
1011 irel->r_addend -= count;
1013 break;
1015 case R_SH_DIR8WPZ:
1016 off = insn & 0xff;
1017 stop = start + 4 + off * 2;
1018 break;
1020 case R_SH_DIR8WPL:
1021 off = insn & 0xff;
1022 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1023 break;
1025 case R_SH_SWITCH8:
1026 case R_SH_SWITCH16:
1027 case R_SH_SWITCH32:
1028 /* These relocs types represent
1029 .word L2-L1
1030 The r_addend field holds the difference between the reloc
1031 address and L1. That is the start of the reloc, and
1032 adding in the contents gives us the top. We must adjust
1033 both the r_offset field and the section contents.
1034 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1035 and the elf bfd r_offset is called r_vaddr. */
1037 stop = irel->r_offset;
1038 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1040 if (start > addr
1041 && start < toaddr
1042 && (stop <= addr || stop >= toaddr))
1043 irel->r_addend += count;
1044 else if (stop > addr
1045 && stop < toaddr
1046 && (start <= addr || start >= toaddr))
1047 irel->r_addend -= count;
1049 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1050 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1051 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1052 voff = bfd_get_8 (abfd, contents + nraddr);
1053 else
1054 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1055 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1057 break;
1059 case R_SH_USES:
1060 start = irel->r_offset;
1061 stop = (bfd_vma) ((bfd_signed_vma) start
1062 + (long) irel->r_addend
1063 + 4);
1064 break;
1067 if (start > addr
1068 && start < toaddr
1069 && (stop <= addr || stop >= toaddr))
1070 adjust = count;
1071 else if (stop > addr
1072 && stop < toaddr
1073 && (start <= addr || start >= toaddr))
1074 adjust = - count;
1075 else
1076 adjust = 0;
1078 if (adjust != 0)
1080 oinsn = insn;
1081 overflow = FALSE;
1082 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1084 default:
1085 abort ();
1086 break;
1088 case R_SH_DIR8WPN:
1089 case R_SH_DIR8WPZ:
1090 insn += adjust / 2;
1091 if ((oinsn & 0xff00) != (insn & 0xff00))
1092 overflow = TRUE;
1093 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1094 break;
1096 case R_SH_IND12W:
1097 insn += adjust / 2;
1098 if ((oinsn & 0xf000) != (insn & 0xf000))
1099 overflow = TRUE;
1100 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1101 break;
1103 case R_SH_DIR8WPL:
1104 BFD_ASSERT (adjust == count || count >= 4);
1105 if (count >= 4)
1106 insn += adjust / 4;
1107 else
1109 if ((irel->r_offset & 3) == 0)
1110 ++insn;
1112 if ((oinsn & 0xff00) != (insn & 0xff00))
1113 overflow = TRUE;
1114 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1115 break;
1117 case R_SH_SWITCH8:
1118 voff += adjust;
1119 if (voff < 0 || voff >= 0xff)
1120 overflow = TRUE;
1121 bfd_put_8 (abfd, voff, contents + nraddr);
1122 break;
1124 case R_SH_SWITCH16:
1125 voff += adjust;
1126 if (voff < - 0x8000 || voff >= 0x8000)
1127 overflow = TRUE;
1128 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1129 break;
1131 case R_SH_SWITCH32:
1132 voff += adjust;
1133 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1134 break;
1136 case R_SH_USES:
1137 irel->r_addend += adjust;
1138 break;
1141 if (overflow)
1143 ((*_bfd_error_handler)
1144 (_("%B: 0x%lx: fatal: reloc overflow while relaxing"),
1145 abfd, (unsigned long) irel->r_offset));
1146 bfd_set_error (bfd_error_bad_value);
1147 return FALSE;
1151 irel->r_offset = nraddr;
1154 /* Look through all the other sections. If there contain any IMM32
1155 relocs against internal symbols which we are not going to adjust
1156 below, we may need to adjust the addends. */
1157 for (o = abfd->sections; o != NULL; o = o->next)
1159 Elf_Internal_Rela *internal_relocs;
1160 Elf_Internal_Rela *irelscan, *irelscanend;
1161 bfd_byte *ocontents;
1163 if (o == sec
1164 || (o->flags & SEC_RELOC) == 0
1165 || o->reloc_count == 0)
1166 continue;
1168 /* We always cache the relocs. Perhaps, if info->keep_memory is
1169 FALSE, we should free them, if we are permitted to, when we
1170 leave sh_coff_relax_section. */
1171 internal_relocs = (_bfd_elf_link_read_relocs
1172 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE));
1173 if (internal_relocs == NULL)
1174 return FALSE;
1176 ocontents = NULL;
1177 irelscanend = internal_relocs + o->reloc_count;
1178 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1180 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1181 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1183 bfd_vma start, stop;
1184 bfd_signed_vma voff;
1186 if (ocontents == NULL)
1188 if (elf_section_data (o)->this_hdr.contents != NULL)
1189 ocontents = elf_section_data (o)->this_hdr.contents;
1190 else
1192 /* We always cache the section contents.
1193 Perhaps, if info->keep_memory is FALSE, we
1194 should free them, if we are permitted to,
1195 when we leave sh_coff_relax_section. */
1196 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1198 if (ocontents != NULL)
1199 free (ocontents);
1200 return FALSE;
1203 elf_section_data (o)->this_hdr.contents = ocontents;
1207 stop = irelscan->r_offset;
1208 start
1209 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1211 /* STOP is in a different section, so it won't change. */
1212 if (start > addr && start < toaddr)
1213 irelscan->r_addend += count;
1215 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1216 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1218 if (start > addr
1219 && start < toaddr
1220 && (stop <= addr || stop >= toaddr))
1221 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1222 ocontents + irelscan->r_offset);
1223 else if (stop > addr
1224 && stop < toaddr
1225 && (start <= addr || start >= toaddr))
1226 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1227 ocontents + irelscan->r_offset);
1230 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1231 continue;
1233 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1234 continue;
1237 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1238 if (isym->st_shndx == sec_shndx
1239 && (isym->st_value <= addr
1240 || isym->st_value >= toaddr))
1242 bfd_vma val;
1244 if (ocontents == NULL)
1246 if (elf_section_data (o)->this_hdr.contents != NULL)
1247 ocontents = elf_section_data (o)->this_hdr.contents;
1248 else
1250 /* We always cache the section contents.
1251 Perhaps, if info->keep_memory is FALSE, we
1252 should free them, if we are permitted to,
1253 when we leave sh_coff_relax_section. */
1254 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1256 if (ocontents != NULL)
1257 free (ocontents);
1258 return FALSE;
1261 elf_section_data (o)->this_hdr.contents = ocontents;
1265 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1266 val += isym->st_value;
1267 if (val > addr && val < toaddr)
1268 bfd_put_32 (abfd, val - count,
1269 ocontents + irelscan->r_offset);
1274 /* Adjust the local symbols defined in this section. */
1275 isymend = isymbuf + symtab_hdr->sh_info;
1276 for (isym = isymbuf; isym < isymend; isym++)
1278 if (isym->st_shndx == sec_shndx
1279 && isym->st_value > addr
1280 && isym->st_value < toaddr)
1281 isym->st_value -= count;
1284 /* Now adjust the global symbols defined in this section. */
1285 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1286 - symtab_hdr->sh_info);
1287 sym_hashes = elf_sym_hashes (abfd);
1288 end_hashes = sym_hashes + symcount;
1289 for (; sym_hashes < end_hashes; sym_hashes++)
1291 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1292 if ((sym_hash->root.type == bfd_link_hash_defined
1293 || sym_hash->root.type == bfd_link_hash_defweak)
1294 && sym_hash->root.u.def.section == sec
1295 && sym_hash->root.u.def.value > addr
1296 && sym_hash->root.u.def.value < toaddr)
1298 sym_hash->root.u.def.value -= count;
1302 /* See if we can move the ALIGN reloc forward. We have adjusted
1303 r_offset for it already. */
1304 if (irelalign != NULL)
1306 bfd_vma alignto, alignaddr;
1308 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1309 alignaddr = BFD_ALIGN (irelalign->r_offset,
1310 1 << irelalign->r_addend);
1311 if (alignto != alignaddr)
1313 /* Tail recursion. */
1314 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1315 (int) (alignto - alignaddr));
1319 return TRUE;
1322 /* Look for loads and stores which we can align to four byte
1323 boundaries. This is like sh_align_loads in coff-sh.c. */
1325 static bfd_boolean
1326 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1327 Elf_Internal_Rela *internal_relocs,
1328 bfd_byte *contents ATTRIBUTE_UNUSED,
1329 bfd_boolean *pswapped)
1331 Elf_Internal_Rela *irel, *irelend;
1332 bfd_vma *labels = NULL;
1333 bfd_vma *label, *label_end;
1334 bfd_size_type amt;
1336 *pswapped = FALSE;
1338 irelend = internal_relocs + sec->reloc_count;
1340 /* Get all the addresses with labels on them. */
1341 amt = sec->reloc_count;
1342 amt *= sizeof (bfd_vma);
1343 labels = (bfd_vma *) bfd_malloc (amt);
1344 if (labels == NULL)
1345 goto error_return;
1346 label_end = labels;
1347 for (irel = internal_relocs; irel < irelend; irel++)
1349 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1351 *label_end = irel->r_offset;
1352 ++label_end;
1356 /* Note that the assembler currently always outputs relocs in
1357 address order. If that ever changes, this code will need to sort
1358 the label values and the relocs. */
1360 label = labels;
1362 for (irel = internal_relocs; irel < irelend; irel++)
1364 bfd_vma start, stop;
1366 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1367 continue;
1369 start = irel->r_offset;
1371 for (irel++; irel < irelend; irel++)
1372 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1373 break;
1374 if (irel < irelend)
1375 stop = irel->r_offset;
1376 else
1377 stop = sec->size;
1379 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1380 internal_relocs, &label,
1381 label_end, start, stop, pswapped))
1382 goto error_return;
1385 free (labels);
1387 return TRUE;
1389 error_return:
1390 if (labels != NULL)
1391 free (labels);
1392 return FALSE;
1395 #ifndef SH64_ELF
1396 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1398 static bfd_boolean
1399 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1400 bfd_byte *contents, bfd_vma addr)
1402 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1403 unsigned short i1, i2;
1404 Elf_Internal_Rela *irel, *irelend;
1406 /* Swap the instructions themselves. */
1407 i1 = bfd_get_16 (abfd, contents + addr);
1408 i2 = bfd_get_16 (abfd, contents + addr + 2);
1409 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1410 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1412 /* Adjust all reloc addresses. */
1413 irelend = internal_relocs + sec->reloc_count;
1414 for (irel = internal_relocs; irel < irelend; irel++)
1416 enum elf_sh_reloc_type type;
1417 int add;
1419 /* There are a few special types of relocs that we don't want to
1420 adjust. These relocs do not apply to the instruction itself,
1421 but are only associated with the address. */
1422 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1423 if (type == R_SH_ALIGN
1424 || type == R_SH_CODE
1425 || type == R_SH_DATA
1426 || type == R_SH_LABEL)
1427 continue;
1429 /* If an R_SH_USES reloc points to one of the addresses being
1430 swapped, we must adjust it. It would be incorrect to do this
1431 for a jump, though, since we want to execute both
1432 instructions after the jump. (We have avoided swapping
1433 around a label, so the jump will not wind up executing an
1434 instruction it shouldn't). */
1435 if (type == R_SH_USES)
1437 bfd_vma off;
1439 off = irel->r_offset + 4 + irel->r_addend;
1440 if (off == addr)
1441 irel->r_offset += 2;
1442 else if (off == addr + 2)
1443 irel->r_offset -= 2;
1446 if (irel->r_offset == addr)
1448 irel->r_offset += 2;
1449 add = -2;
1451 else if (irel->r_offset == addr + 2)
1453 irel->r_offset -= 2;
1454 add = 2;
1456 else
1457 add = 0;
1459 if (add != 0)
1461 bfd_byte *loc;
1462 unsigned short insn, oinsn;
1463 bfd_boolean overflow;
1465 loc = contents + irel->r_offset;
1466 overflow = FALSE;
1467 switch (type)
1469 default:
1470 break;
1472 case R_SH_DIR8WPN:
1473 case R_SH_DIR8WPZ:
1474 insn = bfd_get_16 (abfd, loc);
1475 oinsn = insn;
1476 insn += add / 2;
1477 if ((oinsn & 0xff00) != (insn & 0xff00))
1478 overflow = TRUE;
1479 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1480 break;
1482 case R_SH_IND12W:
1483 insn = bfd_get_16 (abfd, loc);
1484 oinsn = insn;
1485 insn += add / 2;
1486 if ((oinsn & 0xf000) != (insn & 0xf000))
1487 overflow = TRUE;
1488 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1489 break;
1491 case R_SH_DIR8WPL:
1492 /* This reloc ignores the least significant 3 bits of
1493 the program counter before adding in the offset.
1494 This means that if ADDR is at an even address, the
1495 swap will not affect the offset. If ADDR is an at an
1496 odd address, then the instruction will be crossing a
1497 four byte boundary, and must be adjusted. */
1498 if ((addr & 3) != 0)
1500 insn = bfd_get_16 (abfd, loc);
1501 oinsn = insn;
1502 insn += add / 2;
1503 if ((oinsn & 0xff00) != (insn & 0xff00))
1504 overflow = TRUE;
1505 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1508 break;
1511 if (overflow)
1513 ((*_bfd_error_handler)
1514 (_("%B: 0x%lx: fatal: reloc overflow while relaxing"),
1515 abfd, (unsigned long) irel->r_offset));
1516 bfd_set_error (bfd_error_bad_value);
1517 return FALSE;
1522 return TRUE;
1524 #endif /* defined SH64_ELF */
1526 /* Describes one of the various PLT styles. */
1528 struct elf_sh_plt_info
1530 /* The template for the first PLT entry, or NULL if there is no special
1531 first entry. */
1532 const bfd_byte *plt0_entry;
1534 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1535 bfd_vma plt0_entry_size;
1537 /* Index I is the offset into PLT0_ENTRY of a pointer to
1538 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1539 if there is no such pointer. */
1540 bfd_vma plt0_got_fields[3];
1542 /* The template for a symbol's PLT entry. */
1543 const bfd_byte *symbol_entry;
1545 /* The size of SYMBOL_ENTRY in bytes. */
1546 bfd_vma symbol_entry_size;
1548 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1549 on all targets. The comments by each member indicate the value
1550 that the field must hold. */
1551 struct {
1552 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1553 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1554 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1555 } symbol_fields;
1557 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1558 bfd_vma symbol_resolve_offset;
1561 #ifdef INCLUDE_SHMEDIA
1563 /* The size in bytes of an entry in the procedure linkage table. */
1565 #define ELF_PLT_ENTRY_SIZE 64
1567 /* First entry in an absolute procedure linkage table look like this. */
1569 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1571 0xcc, 0x00, 0x01, 0x10, /* movi .got.plt >> 16, r17 */
1572 0xc8, 0x00, 0x01, 0x10, /* shori .got.plt & 65535, r17 */
1573 0x89, 0x10, 0x09, 0x90, /* ld.l r17, 8, r25 */
1574 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1575 0x89, 0x10, 0x05, 0x10, /* ld.l r17, 4, r17 */
1576 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1577 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1578 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1579 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1580 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1581 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1582 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1583 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1584 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1585 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1586 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1589 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1591 0x10, 0x01, 0x00, 0xcc, /* movi .got.plt >> 16, r17 */
1592 0x10, 0x01, 0x00, 0xc8, /* shori .got.plt & 65535, r17 */
1593 0x90, 0x09, 0x10, 0x89, /* ld.l r17, 8, r25 */
1594 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1595 0x10, 0x05, 0x10, 0x89, /* ld.l r17, 4, r17 */
1596 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1597 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1598 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1599 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1600 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1601 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1602 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1603 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1604 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1605 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1606 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1609 /* Sebsequent entries in an absolute procedure linkage table look like
1610 this. */
1612 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1614 0xcc, 0x00, 0x01, 0x90, /* movi nameN-in-GOT >> 16, r25 */
1615 0xc8, 0x00, 0x01, 0x90, /* shori nameN-in-GOT & 65535, r25 */
1616 0x89, 0x90, 0x01, 0x90, /* ld.l r25, 0, r25 */
1617 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1618 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1619 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1620 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1621 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1622 0xcc, 0x00, 0x01, 0x90, /* movi .PLT0 >> 16, r25 */
1623 0xc8, 0x00, 0x01, 0x90, /* shori .PLT0 & 65535, r25 */
1624 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1625 0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */
1626 0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
1627 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1628 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1629 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1632 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1634 0x90, 0x01, 0x00, 0xcc, /* movi nameN-in-GOT >> 16, r25 */
1635 0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */
1636 0x90, 0x01, 0x90, 0x89, /* ld.l r25, 0, r25 */
1637 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1638 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1639 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1640 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1641 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1642 0x90, 0x01, 0x00, 0xcc, /* movi .PLT0 >> 16, r25 */
1643 0x90, 0x01, 0x00, 0xc8, /* shori .PLT0 & 65535, r25 */
1644 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1645 0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */
1646 0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
1647 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1648 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1649 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1652 /* Entries in a PIC procedure linkage table look like this. */
1654 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1656 0xcc, 0x00, 0x01, 0x90, /* movi nameN@GOT >> 16, r25 */
1657 0xc8, 0x00, 0x01, 0x90, /* shori nameN@GOT & 65535, r25 */
1658 0x40, 0xc2, 0x65, 0x90, /* ldx.l r12, r25, r25 */
1659 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1660 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1661 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1662 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1663 0x6f, 0xf0, 0xff, 0xf0, /* nop */
1664 0xce, 0x00, 0x01, 0x10, /* movi -GOT_BIAS, r17 */
1665 0x00, 0xc8, 0x45, 0x10, /* add.l r12, r17, r17 */
1666 0x89, 0x10, 0x09, 0x90, /* ld.l r17, 8, r25 */
1667 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1668 0x89, 0x10, 0x05, 0x10, /* ld.l r17, 4, r17 */
1669 0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */
1670 0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
1671 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1674 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1676 0x90, 0x01, 0x00, 0xcc, /* movi nameN@GOT >> 16, r25 */
1677 0x90, 0x01, 0x00, 0xc8, /* shori nameN@GOT & 65535, r25 */
1678 0x90, 0x65, 0xc2, 0x40, /* ldx.l r12, r25, r25 */
1679 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1680 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1681 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1682 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1683 0xf0, 0xff, 0xf0, 0x6f, /* nop */
1684 0x10, 0x01, 0x00, 0xce, /* movi -GOT_BIAS, r17 */
1685 0x10, 0x45, 0xc8, 0x00, /* add.l r12, r17, r17 */
1686 0x90, 0x09, 0x10, 0x89, /* ld.l r17, 8, r25 */
1687 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1688 0x10, 0x05, 0x10, 0x89, /* ld.l r17, 4, r17 */
1689 0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */
1690 0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
1691 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1694 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1697 /* Big-endian non-PIC. */
1698 elf_sh_plt0_entry_be,
1699 ELF_PLT_ENTRY_SIZE,
1700 { 0, MINUS_ONE, MINUS_ONE },
1701 elf_sh_plt_entry_be,
1702 ELF_PLT_ENTRY_SIZE,
1703 { 0, 32, 48 },
1704 33 /* includes ISA encoding */
1707 /* Little-endian non-PIC. */
1708 elf_sh_plt0_entry_le,
1709 ELF_PLT_ENTRY_SIZE,
1710 { 0, MINUS_ONE, MINUS_ONE },
1711 elf_sh_plt_entry_le,
1712 ELF_PLT_ENTRY_SIZE,
1713 { 0, 32, 48 },
1714 33 /* includes ISA encoding */
1719 /* Big-endian PIC. */
1720 elf_sh_plt0_entry_be,
1721 ELF_PLT_ENTRY_SIZE,
1722 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1723 elf_sh_pic_plt_entry_be,
1724 ELF_PLT_ENTRY_SIZE,
1725 { 0, MINUS_ONE, 52 },
1726 33 /* includes ISA encoding */
1729 /* Little-endian PIC. */
1730 elf_sh_plt0_entry_le,
1731 ELF_PLT_ENTRY_SIZE,
1732 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1733 elf_sh_pic_plt_entry_le,
1734 ELF_PLT_ENTRY_SIZE,
1735 { 0, MINUS_ONE, 52 },
1736 33 /* includes ISA encoding */
1741 /* Return offset of the linker in PLT0 entry. */
1742 #define elf_sh_plt0_gotplt_offset(info) 0
1744 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
1745 VALUE is the field's value and CODE_P is true if VALUE refers to code,
1746 not data.
1748 On SH64, each 32-bit field is loaded by a movi/shori pair. */
1750 inline static void
1751 install_plt_field (bfd *output_bfd, bfd_boolean code_p,
1752 unsigned long value, bfd_byte *addr)
1754 value |= code_p;
1755 bfd_put_32 (output_bfd,
1756 bfd_get_32 (output_bfd, addr)
1757 | ((value >> 6) & 0x3fffc00),
1758 addr);
1759 bfd_put_32 (output_bfd,
1760 bfd_get_32 (output_bfd, addr + 4)
1761 | ((value << 10) & 0x3fffc00),
1762 addr + 4);
1765 /* Return the type of PLT associated with ABFD. PIC_P is true if
1766 the object is position-independent. */
1768 static const struct elf_sh_plt_info *
1769 get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
1771 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
1773 #else
1774 /* The size in bytes of an entry in the procedure linkage table. */
1776 #define ELF_PLT_ENTRY_SIZE 28
1778 /* First entry in an absolute procedure linkage table look like this. */
1780 /* Note - this code has been "optimised" not to use r2. r2 is used by
1781 GCC to return the address of large structures, so it should not be
1782 corrupted here. This does mean however, that this PLT does not conform
1783 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1784 and r2 contains the GOT id. This version stores the GOT id in r0 and
1785 ignores the type. Loaders can easily detect this difference however,
1786 since the type will always be 0 or 8, and the GOT ids will always be
1787 greater than or equal to 12. */
1788 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1790 0xd0, 0x05, /* mov.l 2f,r0 */
1791 0x60, 0x02, /* mov.l @r0,r0 */
1792 0x2f, 0x06, /* mov.l r0,@-r15 */
1793 0xd0, 0x03, /* mov.l 1f,r0 */
1794 0x60, 0x02, /* mov.l @r0,r0 */
1795 0x40, 0x2b, /* jmp @r0 */
1796 0x60, 0xf6, /* mov.l @r15+,r0 */
1797 0x00, 0x09, /* nop */
1798 0x00, 0x09, /* nop */
1799 0x00, 0x09, /* nop */
1800 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1801 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1804 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1806 0x05, 0xd0, /* mov.l 2f,r0 */
1807 0x02, 0x60, /* mov.l @r0,r0 */
1808 0x06, 0x2f, /* mov.l r0,@-r15 */
1809 0x03, 0xd0, /* mov.l 1f,r0 */
1810 0x02, 0x60, /* mov.l @r0,r0 */
1811 0x2b, 0x40, /* jmp @r0 */
1812 0xf6, 0x60, /* mov.l @r15+,r0 */
1813 0x09, 0x00, /* nop */
1814 0x09, 0x00, /* nop */
1815 0x09, 0x00, /* nop */
1816 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1817 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1820 /* Sebsequent entries in an absolute procedure linkage table look like
1821 this. */
1823 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1825 0xd0, 0x04, /* mov.l 1f,r0 */
1826 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1827 0xd1, 0x02, /* mov.l 0f,r1 */
1828 0x40, 0x2b, /* jmp @r0 */
1829 0x60, 0x13, /* mov r1,r0 */
1830 0xd1, 0x03, /* mov.l 2f,r1 */
1831 0x40, 0x2b, /* jmp @r0 */
1832 0x00, 0x09, /* nop */
1833 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1834 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1835 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1838 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1840 0x04, 0xd0, /* mov.l 1f,r0 */
1841 0x02, 0x60, /* mov.l @r0,r0 */
1842 0x02, 0xd1, /* mov.l 0f,r1 */
1843 0x2b, 0x40, /* jmp @r0 */
1844 0x13, 0x60, /* mov r1,r0 */
1845 0x03, 0xd1, /* mov.l 2f,r1 */
1846 0x2b, 0x40, /* jmp @r0 */
1847 0x09, 0x00, /* nop */
1848 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1849 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1850 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1853 /* Entries in a PIC procedure linkage table look like this. */
1855 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1857 0xd0, 0x04, /* mov.l 1f,r0 */
1858 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1859 0x40, 0x2b, /* jmp @r0 */
1860 0x00, 0x09, /* nop */
1861 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1862 0xd1, 0x03, /* mov.l 2f,r1 */
1863 0x40, 0x2b, /* jmp @r0 */
1864 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1865 0x00, 0x09, /* nop */
1866 0x00, 0x09, /* nop */
1867 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1868 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1871 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1873 0x04, 0xd0, /* mov.l 1f,r0 */
1874 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1875 0x2b, 0x40, /* jmp @r0 */
1876 0x09, 0x00, /* nop */
1877 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1878 0x03, 0xd1, /* mov.l 2f,r1 */
1879 0x2b, 0x40, /* jmp @r0 */
1880 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1881 0x09, 0x00, /* nop */
1882 0x09, 0x00, /* nop */
1883 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1884 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1887 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1890 /* Big-endian non-PIC. */
1891 elf_sh_plt0_entry_be,
1892 ELF_PLT_ENTRY_SIZE,
1893 { MINUS_ONE, 24, 20 },
1894 elf_sh_plt_entry_be,
1895 ELF_PLT_ENTRY_SIZE,
1896 { 20, 16, 24 },
1900 /* Little-endian non-PIC. */
1901 elf_sh_plt0_entry_le,
1902 ELF_PLT_ENTRY_SIZE,
1903 { MINUS_ONE, 24, 20 },
1904 elf_sh_plt_entry_le,
1905 ELF_PLT_ENTRY_SIZE,
1906 { 20, 16, 24 },
1912 /* Big-endian PIC. */
1913 elf_sh_plt0_entry_be,
1914 ELF_PLT_ENTRY_SIZE,
1915 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1916 elf_sh_pic_plt_entry_be,
1917 ELF_PLT_ENTRY_SIZE,
1918 { 20, MINUS_ONE, 24 },
1922 /* Little-endian PIC. */
1923 elf_sh_plt0_entry_le,
1924 ELF_PLT_ENTRY_SIZE,
1925 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1926 elf_sh_pic_plt_entry_le,
1927 ELF_PLT_ENTRY_SIZE,
1928 { 20, MINUS_ONE, 24 },
1934 #define VXWORKS_PLT_HEADER_SIZE 12
1935 #define VXWORKS_PLT_ENTRY_SIZE 24
1937 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1939 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1940 0x61, 0x12, /* mov.l @r1,r1 */
1941 0x41, 0x2b, /* jmp @r1 */
1942 0x00, 0x09, /* nop */
1943 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1946 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1948 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1949 0x12, 0x61, /* mov.l @r1,r1 */
1950 0x2b, 0x41, /* jmp @r1 */
1951 0x09, 0x00, /* nop */
1952 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1955 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1957 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1958 0x60, 0x02, /* mov.l @r0,r0 */
1959 0x40, 0x2b, /* jmp @r0 */
1960 0x00, 0x09, /* nop */
1961 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1962 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1963 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1964 0x00, 0x09, /* nop */
1965 0x00, 0x09, /* nop */
1966 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1969 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1971 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1972 0x02, 0x60, /* mov.l @r0,r0 */
1973 0x2b, 0x40, /* jmp @r0 */
1974 0x09, 0x00, /* nop */
1975 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1976 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1977 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1978 0x09, 0x00, /* nop */
1979 0x09, 0x00, /* nop */
1980 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1983 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1985 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1986 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1987 0x40, 0x2b, /* jmp @r0 */
1988 0x00, 0x09, /* nop */
1989 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1990 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1991 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1992 0x41, 0x2b, /* jmp @r1 */
1993 0x00, 0x09, /* nop */
1994 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1997 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1999 0x01, 0xd0, /* mov.l @(8,pc),r0 */
2000 0xce, 0x00, /* mov.l @(r0,r12),r0 */
2001 0x2b, 0x40, /* jmp @r0 */
2002 0x09, 0x00, /* nop */
2003 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
2004 0x01, 0xd0, /* mov.l @(8,pc),r0 */
2005 0xc2, 0x51, /* mov.l @(8,r12),r1 */
2006 0x2b, 0x41, /* jmp @r1 */
2007 0x09, 0x00, /* nop */
2008 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
2011 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
2014 /* Big-endian non-PIC. */
2015 vxworks_sh_plt0_entry_be,
2016 VXWORKS_PLT_HEADER_SIZE,
2017 { MINUS_ONE, MINUS_ONE, 8 },
2018 vxworks_sh_plt_entry_be,
2019 VXWORKS_PLT_ENTRY_SIZE,
2020 { 8, 14, 20 },
2024 /* Little-endian non-PIC. */
2025 vxworks_sh_plt0_entry_le,
2026 VXWORKS_PLT_HEADER_SIZE,
2027 { MINUS_ONE, MINUS_ONE, 8 },
2028 vxworks_sh_plt_entry_le,
2029 VXWORKS_PLT_ENTRY_SIZE,
2030 { 8, 14, 20 },
2036 /* Big-endian PIC. */
2037 NULL,
2039 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2040 vxworks_sh_pic_plt_entry_be,
2041 VXWORKS_PLT_ENTRY_SIZE,
2042 { 8, MINUS_ONE, 20 },
2046 /* Little-endian PIC. */
2047 NULL,
2049 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2050 vxworks_sh_pic_plt_entry_le,
2051 VXWORKS_PLT_ENTRY_SIZE,
2052 { 8, MINUS_ONE, 20 },
2058 /* Return the type of PLT associated with ABFD. PIC_P is true if
2059 the object is position-independent. */
2061 static const struct elf_sh_plt_info *
2062 get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
2064 if (vxworks_object_p (abfd))
2065 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2066 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2069 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2070 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2071 not data. */
2073 inline static void
2074 install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED,
2075 unsigned long value, bfd_byte *addr)
2077 bfd_put_32 (output_bfd, value, addr);
2079 #endif
2081 /* Return the index of the PLT entry at byte offset OFFSET. */
2083 static bfd_vma
2084 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2086 return (offset - info->plt0_entry_size) / info->symbol_entry_size;
2089 /* Do the inverse operation. */
2091 static bfd_vma
2092 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma index)
2094 return info->plt0_entry_size + (index * info->symbol_entry_size);
2097 /* The sh linker needs to keep track of the number of relocs that it
2098 decides to copy as dynamic relocs in check_relocs for each symbol.
2099 This is so that it can later discard them if they are found to be
2100 unnecessary. We store the information in a field extending the
2101 regular ELF linker hash table. */
2103 struct elf_sh_dyn_relocs
2105 struct elf_sh_dyn_relocs *next;
2107 /* The input section of the reloc. */
2108 asection *sec;
2110 /* Total number of relocs copied for the input section. */
2111 bfd_size_type count;
2113 /* Number of pc-relative relocs copied for the input section. */
2114 bfd_size_type pc_count;
2117 /* sh ELF linker hash entry. */
2119 struct elf_sh_link_hash_entry
2121 struct elf_link_hash_entry root;
2123 #ifdef INCLUDE_SHMEDIA
2124 union
2126 bfd_signed_vma refcount;
2127 bfd_vma offset;
2128 } datalabel_got;
2129 #endif
2131 /* Track dynamic relocs copied for this symbol. */
2132 struct elf_sh_dyn_relocs *dyn_relocs;
2134 bfd_signed_vma gotplt_refcount;
2136 enum {
2137 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE
2138 } tls_type;
2141 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2143 struct sh_elf_obj_tdata
2145 struct elf_obj_tdata root;
2147 /* tls_type for each local got entry. */
2148 char *local_got_tls_type;
2151 #define sh_elf_tdata(abfd) \
2152 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2154 #define sh_elf_local_got_tls_type(abfd) \
2155 (sh_elf_tdata (abfd)->local_got_tls_type)
2157 #define is_sh_elf(bfd) \
2158 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2159 && elf_tdata (bfd) != NULL \
2160 && elf_object_id (bfd) == SH_ELF_TDATA)
2162 /* Override the generic function because we need to store sh_elf_obj_tdata
2163 as the specific tdata. */
2165 static bfd_boolean
2166 sh_elf_mkobject (bfd *abfd)
2168 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2169 SH_ELF_TDATA);
2172 /* sh ELF linker hash table. */
2174 struct elf_sh_link_hash_table
2176 struct elf_link_hash_table root;
2178 /* Short-cuts to get to dynamic linker sections. */
2179 asection *sgot;
2180 asection *sgotplt;
2181 asection *srelgot;
2182 asection *splt;
2183 asection *srelplt;
2184 asection *sdynbss;
2185 asection *srelbss;
2187 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2188 asection *srelplt2;
2190 /* Small local sym to section mapping cache. */
2191 struct sym_sec_cache sym_sec;
2193 /* A counter or offset to track a TLS got entry. */
2194 union
2196 bfd_signed_vma refcount;
2197 bfd_vma offset;
2198 } tls_ldm_got;
2200 /* The type of PLT to use. */
2201 const struct elf_sh_plt_info *plt_info;
2203 /* True if the target system is VxWorks. */
2204 bfd_boolean vxworks_p;
2207 /* Traverse an sh ELF linker hash table. */
2209 #define sh_elf_link_hash_traverse(table, func, info) \
2210 (elf_link_hash_traverse \
2211 (&(table)->root, \
2212 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2213 (info)))
2215 /* Get the sh ELF linker hash table from a link_info structure. */
2217 #define sh_elf_hash_table(p) \
2218 ((struct elf_sh_link_hash_table *) ((p)->hash))
2220 /* Create an entry in an sh ELF linker hash table. */
2222 static struct bfd_hash_entry *
2223 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2224 struct bfd_hash_table *table,
2225 const char *string)
2227 struct elf_sh_link_hash_entry *ret =
2228 (struct elf_sh_link_hash_entry *) entry;
2230 /* Allocate the structure if it has not already been allocated by a
2231 subclass. */
2232 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2233 ret = ((struct elf_sh_link_hash_entry *)
2234 bfd_hash_allocate (table,
2235 sizeof (struct elf_sh_link_hash_entry)));
2236 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2237 return (struct bfd_hash_entry *) ret;
2239 /* Call the allocation method of the superclass. */
2240 ret = ((struct elf_sh_link_hash_entry *)
2241 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2242 table, string));
2243 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2245 ret->dyn_relocs = NULL;
2246 ret->gotplt_refcount = 0;
2247 #ifdef INCLUDE_SHMEDIA
2248 ret->datalabel_got.refcount = ret->root.got.refcount;
2249 #endif
2250 ret->tls_type = GOT_UNKNOWN;
2253 return (struct bfd_hash_entry *) ret;
2256 /* Create an sh ELF linker hash table. */
2258 static struct bfd_link_hash_table *
2259 sh_elf_link_hash_table_create (bfd *abfd)
2261 struct elf_sh_link_hash_table *ret;
2262 bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
2264 ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt);
2265 if (ret == (struct elf_sh_link_hash_table *) NULL)
2266 return NULL;
2268 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2269 sh_elf_link_hash_newfunc,
2270 sizeof (struct elf_sh_link_hash_entry)))
2272 free (ret);
2273 return NULL;
2276 ret->sgot = NULL;
2277 ret->sgotplt = NULL;
2278 ret->srelgot = NULL;
2279 ret->splt = NULL;
2280 ret->srelplt = NULL;
2281 ret->sdynbss = NULL;
2282 ret->srelbss = NULL;
2283 ret->srelplt2 = NULL;
2284 ret->sym_sec.abfd = NULL;
2285 ret->tls_ldm_got.refcount = 0;
2286 ret->plt_info = NULL;
2287 ret->vxworks_p = vxworks_object_p (abfd);
2289 return &ret->root.root;
2292 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2293 shortcuts to them in our hash table. */
2295 static bfd_boolean
2296 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2298 struct elf_sh_link_hash_table *htab;
2300 if (! _bfd_elf_create_got_section (dynobj, info))
2301 return FALSE;
2303 htab = sh_elf_hash_table (info);
2304 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2305 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2306 if (! htab->sgot || ! htab->sgotplt)
2307 abort ();
2309 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
2310 (SEC_ALLOC | SEC_LOAD
2311 | SEC_HAS_CONTENTS
2312 | SEC_IN_MEMORY
2313 | SEC_LINKER_CREATED
2314 | SEC_READONLY));
2315 if (htab->srelgot == NULL
2316 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2317 return FALSE;
2318 return TRUE;
2321 /* Create dynamic sections when linking against a dynamic object. */
2323 static bfd_boolean
2324 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2326 struct elf_sh_link_hash_table *htab;
2327 flagword flags, pltflags;
2328 register asection *s;
2329 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2330 int ptralign = 0;
2332 switch (bed->s->arch_size)
2334 case 32:
2335 ptralign = 2;
2336 break;
2338 case 64:
2339 ptralign = 3;
2340 break;
2342 default:
2343 bfd_set_error (bfd_error_bad_value);
2344 return FALSE;
2347 htab = sh_elf_hash_table (info);
2348 if (htab->root.dynamic_sections_created)
2349 return TRUE;
2351 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2352 .rel[a].bss sections. */
2354 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2355 | SEC_LINKER_CREATED);
2357 pltflags = flags;
2358 pltflags |= SEC_CODE;
2359 if (bed->plt_not_loaded)
2360 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2361 if (bed->plt_readonly)
2362 pltflags |= SEC_READONLY;
2364 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
2365 htab->splt = s;
2366 if (s == NULL
2367 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2368 return FALSE;
2370 if (bed->want_plt_sym)
2372 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2373 .plt section. */
2374 struct elf_link_hash_entry *h;
2375 struct bfd_link_hash_entry *bh = NULL;
2377 if (! (_bfd_generic_link_add_one_symbol
2378 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2379 (bfd_vma) 0, (const char *) NULL, FALSE,
2380 get_elf_backend_data (abfd)->collect, &bh)))
2381 return FALSE;
2383 h = (struct elf_link_hash_entry *) bh;
2384 h->def_regular = 1;
2385 h->type = STT_OBJECT;
2386 htab->root.hplt = h;
2388 if (info->shared
2389 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2390 return FALSE;
2393 s = bfd_make_section_with_flags (abfd,
2394 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
2395 flags | SEC_READONLY);
2396 htab->srelplt = s;
2397 if (s == NULL
2398 || ! bfd_set_section_alignment (abfd, s, ptralign))
2399 return FALSE;
2401 if (htab->sgot == NULL
2402 && !create_got_section (abfd, info))
2403 return FALSE;
2406 const char *secname;
2407 char *relname;
2408 flagword secflags;
2409 asection *sec;
2411 for (sec = abfd->sections; sec; sec = sec->next)
2413 secflags = bfd_get_section_flags (abfd, sec);
2414 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
2415 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
2416 continue;
2417 secname = bfd_get_section_name (abfd, sec);
2418 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
2419 strcpy (relname, ".rela");
2420 strcat (relname, secname);
2421 if (bfd_get_section_by_name (abfd, secname))
2422 continue;
2423 s = bfd_make_section_with_flags (abfd, relname,
2424 flags | SEC_READONLY);
2425 if (s == NULL
2426 || ! bfd_set_section_alignment (abfd, s, ptralign))
2427 return FALSE;
2431 if (bed->want_dynbss)
2433 /* The .dynbss section is a place to put symbols which are defined
2434 by dynamic objects, are referenced by regular objects, and are
2435 not functions. We must allocate space for them in the process
2436 image and use a R_*_COPY reloc to tell the dynamic linker to
2437 initialize them at run time. The linker script puts the .dynbss
2438 section into the .bss section of the final image. */
2439 s = bfd_make_section_with_flags (abfd, ".dynbss",
2440 SEC_ALLOC | SEC_LINKER_CREATED);
2441 htab->sdynbss = s;
2442 if (s == NULL)
2443 return FALSE;
2445 /* The .rel[a].bss section holds copy relocs. This section is not
2446 normally needed. We need to create it here, though, so that the
2447 linker will map it to an output section. We can't just create it
2448 only if we need it, because we will not know whether we need it
2449 until we have seen all the input files, and the first time the
2450 main linker code calls BFD after examining all the input files
2451 (size_dynamic_sections) the input sections have already been
2452 mapped to the output sections. If the section turns out not to
2453 be needed, we can discard it later. We will never need this
2454 section when generating a shared object, since they do not use
2455 copy relocs. */
2456 if (! info->shared)
2458 s = bfd_make_section_with_flags (abfd,
2459 (bed->default_use_rela_p
2460 ? ".rela.bss" : ".rel.bss"),
2461 flags | SEC_READONLY);
2462 htab->srelbss = s;
2463 if (s == NULL
2464 || ! bfd_set_section_alignment (abfd, s, ptralign))
2465 return FALSE;
2469 if (htab->vxworks_p)
2471 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2472 return FALSE;
2475 return TRUE;
2478 /* Adjust a symbol defined by a dynamic object and referenced by a
2479 regular object. The current definition is in some section of the
2480 dynamic object, but we're not including those sections. We have to
2481 change the definition to something the rest of the link can
2482 understand. */
2484 static bfd_boolean
2485 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2486 struct elf_link_hash_entry *h)
2488 struct elf_sh_link_hash_table *htab;
2489 struct elf_sh_link_hash_entry *eh;
2490 struct elf_sh_dyn_relocs *p;
2491 asection *s;
2493 htab = sh_elf_hash_table (info);
2495 /* Make sure we know what is going on here. */
2496 BFD_ASSERT (htab->root.dynobj != NULL
2497 && (h->needs_plt
2498 || h->u.weakdef != NULL
2499 || (h->def_dynamic
2500 && h->ref_regular
2501 && !h->def_regular)));
2503 /* If this is a function, put it in the procedure linkage table. We
2504 will fill in the contents of the procedure linkage table later,
2505 when we know the address of the .got section. */
2506 if (h->type == STT_FUNC
2507 || h->needs_plt)
2509 if (h->plt.refcount <= 0
2510 || SYMBOL_CALLS_LOCAL (info, h)
2511 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2512 && h->root.type == bfd_link_hash_undefweak))
2514 /* This case can occur if we saw a PLT reloc in an input
2515 file, but the symbol was never referred to by a dynamic
2516 object. In such a case, we don't actually need to build
2517 a procedure linkage table, and we can just do a REL32
2518 reloc instead. */
2519 h->plt.offset = (bfd_vma) -1;
2520 h->needs_plt = 0;
2523 return TRUE;
2525 else
2526 h->plt.offset = (bfd_vma) -1;
2528 /* If this is a weak symbol, and there is a real definition, the
2529 processor independent code will have arranged for us to see the
2530 real definition first, and we can just use the same value. */
2531 if (h->u.weakdef != NULL)
2533 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2534 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2535 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2536 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2537 if (info->nocopyreloc)
2538 h->non_got_ref = h->u.weakdef->non_got_ref;
2539 return TRUE;
2542 /* This is a reference to a symbol defined by a dynamic object which
2543 is not a function. */
2545 /* If we are creating a shared library, we must presume that the
2546 only references to the symbol are via the global offset table.
2547 For such cases we need not do anything here; the relocations will
2548 be handled correctly by relocate_section. */
2549 if (info->shared)
2550 return TRUE;
2552 /* If there are no references to this symbol that do not use the
2553 GOT, we don't need to generate a copy reloc. */
2554 if (!h->non_got_ref)
2555 return TRUE;
2557 /* If -z nocopyreloc was given, we won't generate them either. */
2558 if (info->nocopyreloc)
2560 h->non_got_ref = 0;
2561 return TRUE;
2564 eh = (struct elf_sh_link_hash_entry *) h;
2565 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2567 s = p->sec->output_section;
2568 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2569 break;
2572 /* If we didn't find any dynamic relocs in sections which needs the
2573 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2574 the copy reloc. */
2575 if (p == NULL)
2577 h->non_got_ref = 0;
2578 return TRUE;
2581 if (h->size == 0)
2583 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2584 h->root.root.string);
2585 return TRUE;
2588 /* We must allocate the symbol in our .dynbss section, which will
2589 become part of the .bss section of the executable. There will be
2590 an entry for this symbol in the .dynsym section. The dynamic
2591 object will contain position independent code, so all references
2592 from the dynamic object to this symbol will go through the global
2593 offset table. The dynamic linker will use the .dynsym entry to
2594 determine the address it must put in the global offset table, so
2595 both the dynamic object and the regular object will refer to the
2596 same memory location for the variable. */
2598 s = htab->sdynbss;
2599 BFD_ASSERT (s != NULL);
2601 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2602 copy the initial value out of the dynamic object and into the
2603 runtime process image. We need to remember the offset into the
2604 .rela.bss section we are going to use. */
2605 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2607 asection *srel;
2609 srel = htab->srelbss;
2610 BFD_ASSERT (srel != NULL);
2611 srel->size += sizeof (Elf32_External_Rela);
2612 h->needs_copy = 1;
2615 return _bfd_elf_adjust_dynamic_copy (h, s);
2618 /* Allocate space in .plt, .got and associated reloc sections for
2619 dynamic relocs. */
2621 static bfd_boolean
2622 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2624 struct bfd_link_info *info;
2625 struct elf_sh_link_hash_table *htab;
2626 struct elf_sh_link_hash_entry *eh;
2627 struct elf_sh_dyn_relocs *p;
2629 if (h->root.type == bfd_link_hash_indirect)
2630 return TRUE;
2632 if (h->root.type == bfd_link_hash_warning)
2633 /* When warning symbols are created, they **replace** the "real"
2634 entry in the hash table, thus we never get to see the real
2635 symbol in a hash traversal. So look at it now. */
2636 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2638 info = (struct bfd_link_info *) inf;
2639 htab = sh_elf_hash_table (info);
2641 eh = (struct elf_sh_link_hash_entry *) h;
2642 if ((h->got.refcount > 0
2643 || h->forced_local)
2644 && eh->gotplt_refcount > 0)
2646 /* The symbol has been forced local, or we have some direct got refs,
2647 so treat all the gotplt refs as got refs. */
2648 h->got.refcount += eh->gotplt_refcount;
2649 if (h->plt.refcount >= eh->gotplt_refcount)
2650 h->plt.refcount -= eh->gotplt_refcount;
2653 if (htab->root.dynamic_sections_created
2654 && h->plt.refcount > 0
2655 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2656 || h->root.type != bfd_link_hash_undefweak))
2658 /* Make sure this symbol is output as a dynamic symbol.
2659 Undefined weak syms won't yet be marked as dynamic. */
2660 if (h->dynindx == -1
2661 && !h->forced_local)
2663 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2664 return FALSE;
2667 if (info->shared
2668 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2670 asection *s = htab->splt;
2672 /* If this is the first .plt entry, make room for the special
2673 first entry. */
2674 if (s->size == 0)
2675 s->size += htab->plt_info->plt0_entry_size;
2677 h->plt.offset = s->size;
2679 /* If this symbol is not defined in a regular file, and we are
2680 not generating a shared library, then set the symbol to this
2681 location in the .plt. This is required to make function
2682 pointers compare as equal between the normal executable and
2683 the shared library. */
2684 if (! info->shared
2685 && !h->def_regular)
2687 h->root.u.def.section = s;
2688 h->root.u.def.value = h->plt.offset;
2691 /* Make room for this entry. */
2692 s->size += htab->plt_info->symbol_entry_size;
2694 /* We also need to make an entry in the .got.plt section, which
2695 will be placed in the .got section by the linker script. */
2696 htab->sgotplt->size += 4;
2698 /* We also need to make an entry in the .rel.plt section. */
2699 htab->srelplt->size += sizeof (Elf32_External_Rela);
2701 if (htab->vxworks_p && !info->shared)
2703 /* VxWorks executables have a second set of relocations
2704 for each PLT entry. They go in a separate relocation
2705 section, which is processed by the kernel loader. */
2707 /* There is a relocation for the initial PLT entry:
2708 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2709 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2710 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2712 /* There are two extra relocations for each subsequent
2713 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2714 and an R_SH_DIR32 relocation for the PLT entry. */
2715 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2718 else
2720 h->plt.offset = (bfd_vma) -1;
2721 h->needs_plt = 0;
2724 else
2726 h->plt.offset = (bfd_vma) -1;
2727 h->needs_plt = 0;
2730 if (h->got.refcount > 0)
2732 asection *s;
2733 bfd_boolean dyn;
2734 int tls_type = sh_elf_hash_entry (h)->tls_type;
2736 /* Make sure this symbol is output as a dynamic symbol.
2737 Undefined weak syms won't yet be marked as dynamic. */
2738 if (h->dynindx == -1
2739 && !h->forced_local)
2741 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2742 return FALSE;
2745 s = htab->sgot;
2746 h->got.offset = s->size;
2747 s->size += 4;
2748 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2749 if (tls_type == GOT_TLS_GD)
2750 s->size += 4;
2751 dyn = htab->root.dynamic_sections_created;
2752 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2753 R_SH_TLS_GD needs one if local symbol and two if global. */
2754 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2755 || (tls_type == GOT_TLS_IE && dyn))
2756 htab->srelgot->size += sizeof (Elf32_External_Rela);
2757 else if (tls_type == GOT_TLS_GD)
2758 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2759 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2760 || h->root.type != bfd_link_hash_undefweak)
2761 && (info->shared
2762 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2763 htab->srelgot->size += sizeof (Elf32_External_Rela);
2765 else
2766 h->got.offset = (bfd_vma) -1;
2768 #ifdef INCLUDE_SHMEDIA
2769 if (eh->datalabel_got.refcount > 0)
2771 asection *s;
2772 bfd_boolean dyn;
2774 /* Make sure this symbol is output as a dynamic symbol.
2775 Undefined weak syms won't yet be marked as dynamic. */
2776 if (h->dynindx == -1
2777 && !h->forced_local)
2779 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2780 return FALSE;
2783 s = htab->sgot;
2784 eh->datalabel_got.offset = s->size;
2785 s->size += 4;
2786 dyn = htab->root.dynamic_sections_created;
2787 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2788 htab->srelgot->size += sizeof (Elf32_External_Rela);
2790 else
2791 eh->datalabel_got.offset = (bfd_vma) -1;
2792 #endif
2794 if (eh->dyn_relocs == NULL)
2795 return TRUE;
2797 /* In the shared -Bsymbolic case, discard space allocated for
2798 dynamic pc-relative relocs against symbols which turn out to be
2799 defined in regular objects. For the normal shared case, discard
2800 space for pc-relative relocs that have become local due to symbol
2801 visibility changes. */
2803 if (info->shared)
2805 if (SYMBOL_CALLS_LOCAL (info, h))
2807 struct elf_sh_dyn_relocs **pp;
2809 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2811 p->count -= p->pc_count;
2812 p->pc_count = 0;
2813 if (p->count == 0)
2814 *pp = p->next;
2815 else
2816 pp = &p->next;
2820 if (htab->vxworks_p)
2822 struct elf_sh_dyn_relocs **pp;
2824 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2826 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2827 *pp = p->next;
2828 else
2829 pp = &p->next;
2833 /* Also discard relocs on undefined weak syms with non-default
2834 visibility. */
2835 if (eh->dyn_relocs != NULL
2836 && h->root.type == bfd_link_hash_undefweak)
2838 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2839 eh->dyn_relocs = NULL;
2841 /* Make sure undefined weak symbols are output as a dynamic
2842 symbol in PIEs. */
2843 else if (h->dynindx == -1
2844 && !h->forced_local)
2846 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2847 return FALSE;
2851 else
2853 /* For the non-shared case, discard space for relocs against
2854 symbols which turn out to need copy relocs or are not
2855 dynamic. */
2857 if (!h->non_got_ref
2858 && ((h->def_dynamic
2859 && !h->def_regular)
2860 || (htab->root.dynamic_sections_created
2861 && (h->root.type == bfd_link_hash_undefweak
2862 || h->root.type == bfd_link_hash_undefined))))
2864 /* Make sure this symbol is output as a dynamic symbol.
2865 Undefined weak syms won't yet be marked as dynamic. */
2866 if (h->dynindx == -1
2867 && !h->forced_local)
2869 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2870 return FALSE;
2873 /* If that succeeded, we know we'll be keeping all the
2874 relocs. */
2875 if (h->dynindx != -1)
2876 goto keep;
2879 eh->dyn_relocs = NULL;
2881 keep: ;
2884 /* Finally, allocate space. */
2885 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2887 asection *sreloc = elf_section_data (p->sec)->sreloc;
2888 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2891 return TRUE;
2894 /* Find any dynamic relocs that apply to read-only sections. */
2896 static bfd_boolean
2897 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2899 struct elf_sh_link_hash_entry *eh;
2900 struct elf_sh_dyn_relocs *p;
2902 if (h->root.type == bfd_link_hash_warning)
2903 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2905 eh = (struct elf_sh_link_hash_entry *) h;
2906 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2908 asection *s = p->sec->output_section;
2910 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2912 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2914 info->flags |= DF_TEXTREL;
2916 /* Not an error, just cut short the traversal. */
2917 return FALSE;
2920 return TRUE;
2923 /* This function is called after all the input files have been read,
2924 and the input sections have been assigned to output sections.
2925 It's a convenient place to determine the PLT style. */
2927 static bfd_boolean
2928 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2930 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared);
2931 return TRUE;
2934 /* Set the sizes of the dynamic sections. */
2936 static bfd_boolean
2937 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2938 struct bfd_link_info *info)
2940 struct elf_sh_link_hash_table *htab;
2941 bfd *dynobj;
2942 asection *s;
2943 bfd_boolean relocs;
2944 bfd *ibfd;
2946 htab = sh_elf_hash_table (info);
2947 dynobj = htab->root.dynobj;
2948 BFD_ASSERT (dynobj != NULL);
2950 if (htab->root.dynamic_sections_created)
2952 /* Set the contents of the .interp section to the interpreter. */
2953 if (info->executable)
2955 s = bfd_get_section_by_name (dynobj, ".interp");
2956 BFD_ASSERT (s != NULL);
2957 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2958 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2962 /* Set up .got offsets for local syms, and space for local dynamic
2963 relocs. */
2964 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2966 bfd_signed_vma *local_got;
2967 bfd_signed_vma *end_local_got;
2968 char *local_tls_type;
2969 bfd_size_type locsymcount;
2970 Elf_Internal_Shdr *symtab_hdr;
2971 asection *srel;
2973 if (! is_sh_elf (ibfd))
2974 continue;
2976 for (s = ibfd->sections; s != NULL; s = s->next)
2978 struct elf_sh_dyn_relocs *p;
2980 for (p = ((struct elf_sh_dyn_relocs *)
2981 elf_section_data (s)->local_dynrel);
2982 p != NULL;
2983 p = p->next)
2985 if (! bfd_is_abs_section (p->sec)
2986 && bfd_is_abs_section (p->sec->output_section))
2988 /* Input section has been discarded, either because
2989 it is a copy of a linkonce section or due to
2990 linker script /DISCARD/, so we'll be discarding
2991 the relocs too. */
2993 else if (htab->vxworks_p
2994 && strcmp (p->sec->output_section->name,
2995 ".tls_vars") == 0)
2997 /* Relocations in vxworks .tls_vars sections are
2998 handled specially by the loader. */
3000 else if (p->count != 0)
3002 srel = elf_section_data (p->sec)->sreloc;
3003 srel->size += p->count * sizeof (Elf32_External_Rela);
3004 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3005 info->flags |= DF_TEXTREL;
3010 local_got = elf_local_got_refcounts (ibfd);
3011 if (!local_got)
3012 continue;
3014 symtab_hdr = &elf_symtab_hdr (ibfd);
3015 locsymcount = symtab_hdr->sh_info;
3016 #ifdef INCLUDE_SHMEDIA
3017 /* Count datalabel local GOT. */
3018 locsymcount *= 2;
3019 #endif
3020 end_local_got = local_got + locsymcount;
3021 local_tls_type = sh_elf_local_got_tls_type (ibfd);
3022 s = htab->sgot;
3023 srel = htab->srelgot;
3024 for (; local_got < end_local_got; ++local_got)
3026 if (*local_got > 0)
3028 *local_got = s->size;
3029 s->size += 4;
3030 if (*local_tls_type == GOT_TLS_GD)
3031 s->size += 4;
3032 if (info->shared)
3033 srel->size += sizeof (Elf32_External_Rela);
3035 else
3036 *local_got = (bfd_vma) -1;
3037 ++local_tls_type;
3041 if (htab->tls_ldm_got.refcount > 0)
3043 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3044 relocs. */
3045 htab->tls_ldm_got.offset = htab->sgot->size;
3046 htab->sgot->size += 8;
3047 htab->srelgot->size += sizeof (Elf32_External_Rela);
3049 else
3050 htab->tls_ldm_got.offset = -1;
3052 /* Allocate global sym .plt and .got entries, and space for global
3053 sym dynamic relocs. */
3054 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3056 /* We now have determined the sizes of the various dynamic sections.
3057 Allocate memory for them. */
3058 relocs = FALSE;
3059 for (s = dynobj->sections; s != NULL; s = s->next)
3061 if ((s->flags & SEC_LINKER_CREATED) == 0)
3062 continue;
3064 if (s == htab->splt
3065 || s == htab->sgot
3066 || s == htab->sgotplt
3067 || s == htab->sdynbss)
3069 /* Strip this section if we don't need it; see the
3070 comment below. */
3072 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3074 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
3075 relocs = TRUE;
3077 /* We use the reloc_count field as a counter if we need
3078 to copy relocs into the output file. */
3079 s->reloc_count = 0;
3081 else
3083 /* It's not one of our sections, so don't allocate space. */
3084 continue;
3087 if (s->size == 0)
3089 /* If we don't need this section, strip it from the
3090 output file. This is mostly to handle .rela.bss and
3091 .rela.plt. We must create both sections in
3092 create_dynamic_sections, because they must be created
3093 before the linker maps input sections to output
3094 sections. The linker does that before
3095 adjust_dynamic_symbol is called, and it is that
3096 function which decides whether anything needs to go
3097 into these sections. */
3099 s->flags |= SEC_EXCLUDE;
3100 continue;
3103 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3104 continue;
3106 /* Allocate memory for the section contents. We use bfd_zalloc
3107 here in case unused entries are not reclaimed before the
3108 section's contents are written out. This should not happen,
3109 but this way if it does, we get a R_SH_NONE reloc instead
3110 of garbage. */
3111 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3112 if (s->contents == NULL)
3113 return FALSE;
3116 if (htab->root.dynamic_sections_created)
3118 /* Add some entries to the .dynamic section. We fill in the
3119 values later, in sh_elf_finish_dynamic_sections, but we
3120 must add the entries now so that we get the correct size for
3121 the .dynamic section. The DT_DEBUG entry is filled in by the
3122 dynamic linker and used by the debugger. */
3123 #define add_dynamic_entry(TAG, VAL) \
3124 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3126 if (info->executable)
3128 if (! add_dynamic_entry (DT_DEBUG, 0))
3129 return FALSE;
3132 if (htab->splt->size != 0)
3134 if (! add_dynamic_entry (DT_PLTGOT, 0)
3135 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3136 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3137 || ! add_dynamic_entry (DT_JMPREL, 0))
3138 return FALSE;
3141 if (relocs)
3143 if (! add_dynamic_entry (DT_RELA, 0)
3144 || ! add_dynamic_entry (DT_RELASZ, 0)
3145 || ! add_dynamic_entry (DT_RELAENT,
3146 sizeof (Elf32_External_Rela)))
3147 return FALSE;
3149 /* If any dynamic relocs apply to a read-only section,
3150 then we need a DT_TEXTREL entry. */
3151 if ((info->flags & DF_TEXTREL) == 0)
3152 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, info);
3154 if ((info->flags & DF_TEXTREL) != 0)
3156 if (! add_dynamic_entry (DT_TEXTREL, 0))
3157 return FALSE;
3160 if (htab->vxworks_p
3161 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3162 return FALSE;
3164 #undef add_dynamic_entry
3166 return TRUE;
3169 /* Relocate an SH ELF section. */
3171 static bfd_boolean
3172 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3173 bfd *input_bfd, asection *input_section,
3174 bfd_byte *contents, Elf_Internal_Rela *relocs,
3175 Elf_Internal_Sym *local_syms,
3176 asection **local_sections)
3178 struct elf_sh_link_hash_table *htab;
3179 Elf_Internal_Shdr *symtab_hdr;
3180 struct elf_link_hash_entry **sym_hashes;
3181 Elf_Internal_Rela *rel, *relend;
3182 bfd *dynobj;
3183 bfd_vma *local_got_offsets;
3184 asection *sgot;
3185 asection *sgotplt;
3186 asection *splt;
3187 asection *sreloc;
3188 asection *srelgot;
3189 bfd_boolean is_vxworks_tls;
3191 BFD_ASSERT (is_sh_elf (input_bfd));
3193 htab = sh_elf_hash_table (info);
3194 symtab_hdr = &elf_symtab_hdr (input_bfd);
3195 sym_hashes = elf_sym_hashes (input_bfd);
3196 dynobj = htab->root.dynobj;
3197 local_got_offsets = elf_local_got_offsets (input_bfd);
3199 sgot = htab->sgot;
3200 sgotplt = htab->sgotplt;
3201 splt = htab->splt;
3202 sreloc = NULL;
3203 srelgot = NULL;
3204 /* We have to handle relocations in vxworks .tls_vars sections
3205 specially, because the dynamic loader is 'weird'. */
3206 is_vxworks_tls = (htab->vxworks_p && info->shared
3207 && !strcmp (input_section->output_section->name,
3208 ".tls_vars"));
3210 rel = relocs;
3211 relend = relocs + input_section->reloc_count;
3212 for (; rel < relend; rel++)
3214 int r_type;
3215 reloc_howto_type *howto;
3216 unsigned long r_symndx;
3217 Elf_Internal_Sym *sym;
3218 asection *sec;
3219 struct elf_link_hash_entry *h;
3220 bfd_vma relocation;
3221 bfd_vma addend = (bfd_vma) 0;
3222 bfd_reloc_status_type r;
3223 int seen_stt_datalabel = 0;
3224 bfd_vma off;
3225 int tls_type;
3227 r_symndx = ELF32_R_SYM (rel->r_info);
3229 r_type = ELF32_R_TYPE (rel->r_info);
3231 /* Many of the relocs are only used for relaxing, and are
3232 handled entirely by the relaxation code. */
3233 if (r_type >= (int) R_SH_GNU_VTINHERIT
3234 && r_type <= (int) R_SH_LABEL)
3235 continue;
3236 if (r_type == (int) R_SH_NONE)
3237 continue;
3239 if (r_type < 0
3240 || r_type >= R_SH_max
3241 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3242 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3243 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3244 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3245 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3246 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3247 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3248 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3249 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3250 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2))
3252 bfd_set_error (bfd_error_bad_value);
3253 return FALSE;
3256 howto = get_howto_table (output_bfd) + r_type;
3258 /* For relocs that aren't partial_inplace, we get the addend from
3259 the relocation. */
3260 if (! howto->partial_inplace)
3261 addend = rel->r_addend;
3263 h = NULL;
3264 sym = NULL;
3265 sec = NULL;
3266 if (r_symndx < symtab_hdr->sh_info)
3268 sym = local_syms + r_symndx;
3269 sec = local_sections[r_symndx];
3270 relocation = (sec->output_section->vma
3271 + sec->output_offset
3272 + sym->st_value);
3273 /* A local symbol never has STO_SH5_ISA32, so we don't need
3274 datalabel processing here. Make sure this does not change
3275 without notice. */
3276 if ((sym->st_other & STO_SH5_ISA32) != 0)
3277 ((*info->callbacks->reloc_dangerous)
3278 (info,
3279 _("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
3280 input_bfd, input_section, rel->r_offset));
3282 if (sec != NULL && elf_discarded_section (sec))
3283 /* Handled below. */
3285 else if (info->relocatable)
3287 /* This is a relocatable link. We don't have to change
3288 anything, unless the reloc is against a section symbol,
3289 in which case we have to adjust according to where the
3290 section symbol winds up in the output section. */
3291 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3293 if (! howto->partial_inplace)
3295 /* For relocations with the addend in the
3296 relocation, we need just to update the addend.
3297 All real relocs are of type partial_inplace; this
3298 code is mostly for completeness. */
3299 rel->r_addend += sec->output_offset;
3301 continue;
3304 /* Relocs of type partial_inplace need to pick up the
3305 contents in the contents and add the offset resulting
3306 from the changed location of the section symbol.
3307 Using _bfd_final_link_relocate (e.g. goto
3308 final_link_relocate) here would be wrong, because
3309 relocations marked pc_relative would get the current
3310 location subtracted, and we must only do that at the
3311 final link. */
3312 r = _bfd_relocate_contents (howto, input_bfd,
3313 sec->output_offset
3314 + sym->st_value,
3315 contents + rel->r_offset);
3316 goto relocation_done;
3319 continue;
3321 else if (! howto->partial_inplace)
3323 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3324 addend = rel->r_addend;
3326 else if ((sec->flags & SEC_MERGE)
3327 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3329 asection *msec;
3331 if (howto->rightshift || howto->src_mask != 0xffffffff)
3333 (*_bfd_error_handler)
3334 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
3335 input_bfd, input_section,
3336 (long) rel->r_offset, howto->name);
3337 return FALSE;
3340 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3341 msec = sec;
3342 addend =
3343 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3344 - relocation;
3345 addend += msec->output_section->vma + msec->output_offset;
3346 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3347 addend = 0;
3350 else
3352 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3354 relocation = 0;
3355 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3356 while (h->root.type == bfd_link_hash_indirect
3357 || h->root.type == bfd_link_hash_warning)
3359 #ifdef INCLUDE_SHMEDIA
3360 /* If the reference passes a symbol marked with
3361 STT_DATALABEL, then any STO_SH5_ISA32 on the final value
3362 doesn't count. */
3363 seen_stt_datalabel |= h->type == STT_DATALABEL;
3364 #endif
3365 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3367 if (h->root.type == bfd_link_hash_defined
3368 || h->root.type == bfd_link_hash_defweak)
3370 bfd_boolean dyn;
3372 dyn = htab->root.dynamic_sections_created;
3373 sec = h->root.u.def.section;
3374 /* In these cases, we don't need the relocation value.
3375 We check specially because in some obscure cases
3376 sec->output_section will be NULL. */
3377 if (r_type == R_SH_GOTPC
3378 || r_type == R_SH_GOTPC_LOW16
3379 || r_type == R_SH_GOTPC_MEDLOW16
3380 || r_type == R_SH_GOTPC_MEDHI16
3381 || r_type == R_SH_GOTPC_HI16
3382 || ((r_type == R_SH_PLT32
3383 || r_type == R_SH_PLT_LOW16
3384 || r_type == R_SH_PLT_MEDLOW16
3385 || r_type == R_SH_PLT_MEDHI16
3386 || r_type == R_SH_PLT_HI16)
3387 && h->plt.offset != (bfd_vma) -1)
3388 || ((r_type == R_SH_GOT32
3389 || r_type == R_SH_GOT_LOW16
3390 || r_type == R_SH_GOT_MEDLOW16
3391 || r_type == R_SH_GOT_MEDHI16
3392 || r_type == R_SH_GOT_HI16)
3393 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3394 && (! info->shared
3395 || (! info->symbolic && h->dynindx != -1)
3396 || !h->def_regular))
3397 /* The cases above are those in which relocation is
3398 overwritten in the switch block below. The cases
3399 below are those in which we must defer relocation
3400 to run-time, because we can't resolve absolute
3401 addresses when creating a shared library. */
3402 || (info->shared
3403 && ((! info->symbolic && h->dynindx != -1)
3404 || !h->def_regular)
3405 && ((r_type == R_SH_DIR32
3406 && !h->forced_local)
3407 || (r_type == R_SH_REL32
3408 && !SYMBOL_CALLS_LOCAL (info, h)))
3409 && ((input_section->flags & SEC_ALLOC) != 0
3410 /* DWARF will emit R_SH_DIR32 relocations in its
3411 sections against symbols defined externally
3412 in shared libraries. We can't do anything
3413 with them here. */
3414 || ((input_section->flags & SEC_DEBUGGING) != 0
3415 && h->def_dynamic)))
3416 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3417 sections because such sections are not SEC_ALLOC and
3418 thus ld.so will not process them. */
3419 || (sec->output_section == NULL
3420 && ((input_section->flags & SEC_DEBUGGING) != 0
3421 && h->def_dynamic))
3422 || (sec->output_section == NULL
3423 && (sh_elf_hash_entry (h)->tls_type == GOT_TLS_IE
3424 || sh_elf_hash_entry (h)->tls_type == GOT_TLS_GD)))
3426 else if (sec->output_section != NULL)
3427 relocation = ((h->root.u.def.value
3428 + sec->output_section->vma
3429 + sec->output_offset)
3430 /* A STO_SH5_ISA32 causes a "bitor 1" to the
3431 symbol value, unless we've seen
3432 STT_DATALABEL on the way to it. */
3433 | ((h->other & STO_SH5_ISA32) != 0
3434 && ! seen_stt_datalabel));
3435 else if (!info->relocatable)
3437 (*_bfd_error_handler)
3438 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3439 input_bfd,
3440 input_section,
3441 (long) rel->r_offset,
3442 howto->name,
3443 h->root.root.string);
3444 return FALSE;
3447 else if (h->root.type == bfd_link_hash_undefweak)
3449 else if (info->unresolved_syms_in_objects == RM_IGNORE
3450 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3452 else if (!info->relocatable)
3454 if (! info->callbacks->undefined_symbol
3455 (info, h->root.root.string, input_bfd,
3456 input_section, rel->r_offset,
3457 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
3458 || ELF_ST_VISIBILITY (h->other))))
3459 return FALSE;
3463 if (sec != NULL && elf_discarded_section (sec))
3465 /* For relocs against symbols from removed linkonce sections,
3466 or sections discarded by a linker script, we just want the
3467 section contents zeroed. Avoid any special processing. */
3468 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3469 rel->r_info = 0;
3470 rel->r_addend = 0;
3471 continue;
3474 if (info->relocatable)
3475 continue;
3477 switch ((int) r_type)
3479 final_link_relocate:
3480 /* COFF relocs don't use the addend. The addend is used for
3481 R_SH_DIR32 to be compatible with other compilers. */
3482 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3483 contents, rel->r_offset,
3484 relocation, addend);
3485 break;
3487 case R_SH_IND12W:
3488 goto final_link_relocate;
3490 case R_SH_DIR8WPN:
3491 case R_SH_DIR8WPZ:
3492 case R_SH_DIR8WPL:
3493 /* If the reloc is against the start of this section, then
3494 the assembler has already taken care of it and the reloc
3495 is here only to assist in relaxing. If the reloc is not
3496 against the start of this section, then it's against an
3497 external symbol and we must deal with it ourselves. */
3498 if (input_section->output_section->vma + input_section->output_offset
3499 != relocation)
3501 int disp = (relocation
3502 - input_section->output_section->vma
3503 - input_section->output_offset
3504 - rel->r_offset);
3505 int mask = 0;
3506 switch (r_type)
3508 case R_SH_DIR8WPN:
3509 case R_SH_DIR8WPZ: mask = 1; break;
3510 case R_SH_DIR8WPL: mask = 3; break;
3511 default: mask = 0; break;
3513 if (disp & mask)
3515 ((*_bfd_error_handler)
3516 (_("%B: 0x%lx: fatal: unaligned branch target for relax-support relocation"),
3517 input_section->owner,
3518 (unsigned long) rel->r_offset));
3519 bfd_set_error (bfd_error_bad_value);
3520 return FALSE;
3522 relocation -= 4;
3523 goto final_link_relocate;
3525 r = bfd_reloc_ok;
3526 break;
3528 default:
3529 #ifdef INCLUDE_SHMEDIA
3530 if (shmedia_prepare_reloc (info, input_bfd, input_section,
3531 contents, rel, &relocation))
3532 goto final_link_relocate;
3533 #endif
3534 bfd_set_error (bfd_error_bad_value);
3535 return FALSE;
3537 case R_SH_DIR16:
3538 case R_SH_DIR8:
3539 case R_SH_DIR8U:
3540 case R_SH_DIR8S:
3541 case R_SH_DIR4U:
3542 goto final_link_relocate;
3544 case R_SH_DIR8UL:
3545 case R_SH_DIR4UL:
3546 if (relocation & 3)
3548 ((*_bfd_error_handler)
3549 (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3550 input_section->owner,
3551 (unsigned long) rel->r_offset, howto->name,
3552 (unsigned long) relocation));
3553 bfd_set_error (bfd_error_bad_value);
3554 return FALSE;
3556 goto final_link_relocate;
3558 case R_SH_DIR8UW:
3559 case R_SH_DIR8SW:
3560 case R_SH_DIR4UW:
3561 if (relocation & 1)
3563 ((*_bfd_error_handler)
3564 (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3565 input_section->owner,
3566 (unsigned long) rel->r_offset, howto->name,
3567 (unsigned long) relocation));
3568 bfd_set_error (bfd_error_bad_value);
3569 return FALSE;
3571 goto final_link_relocate;
3573 case R_SH_PSHA:
3574 if ((signed int)relocation < -32
3575 || (signed int)relocation > 32)
3577 ((*_bfd_error_handler)
3578 (_("%B: 0x%lx: fatal: R_SH_PSHA relocation %d not in range -32..32"),
3579 input_section->owner,
3580 (unsigned long) rel->r_offset,
3581 (unsigned long) relocation));
3582 bfd_set_error (bfd_error_bad_value);
3583 return FALSE;
3585 goto final_link_relocate;
3587 case R_SH_PSHL:
3588 if ((signed int)relocation < -16
3589 || (signed int)relocation > 16)
3591 ((*_bfd_error_handler)
3592 (_("%B: 0x%lx: fatal: R_SH_PSHL relocation %d not in range -32..32"),
3593 input_section->owner,
3594 (unsigned long) rel->r_offset,
3595 (unsigned long) relocation));
3596 bfd_set_error (bfd_error_bad_value);
3597 return FALSE;
3599 goto final_link_relocate;
3601 case R_SH_DIR32:
3602 case R_SH_REL32:
3603 #ifdef INCLUDE_SHMEDIA
3604 case R_SH_IMM_LOW16_PCREL:
3605 case R_SH_IMM_MEDLOW16_PCREL:
3606 case R_SH_IMM_MEDHI16_PCREL:
3607 case R_SH_IMM_HI16_PCREL:
3608 #endif
3609 if (info->shared
3610 && (h == NULL
3611 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3612 || h->root.type != bfd_link_hash_undefweak)
3613 && r_symndx != 0
3614 && (input_section->flags & SEC_ALLOC) != 0
3615 && !is_vxworks_tls
3616 && (r_type == R_SH_DIR32
3617 || !SYMBOL_CALLS_LOCAL (info, h)))
3619 Elf_Internal_Rela outrel;
3620 bfd_byte *loc;
3621 bfd_boolean skip, relocate;
3623 /* When generating a shared object, these relocations
3624 are copied into the output file to be resolved at run
3625 time. */
3627 if (sreloc == NULL)
3629 sreloc = _bfd_elf_get_dynamic_reloc_section
3630 (input_bfd, input_section, /*rela?*/ TRUE);
3631 if (sreloc == NULL)
3632 return FALSE;
3635 skip = FALSE;
3636 relocate = FALSE;
3638 outrel.r_offset =
3639 _bfd_elf_section_offset (output_bfd, info, input_section,
3640 rel->r_offset);
3641 if (outrel.r_offset == (bfd_vma) -1)
3642 skip = TRUE;
3643 else if (outrel.r_offset == (bfd_vma) -2)
3644 skip = TRUE, relocate = TRUE;
3645 outrel.r_offset += (input_section->output_section->vma
3646 + input_section->output_offset);
3648 if (skip)
3649 memset (&outrel, 0, sizeof outrel);
3650 else if (r_type == R_SH_REL32)
3652 BFD_ASSERT (h != NULL && h->dynindx != -1);
3653 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3654 outrel.r_addend
3655 = (howto->partial_inplace
3656 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3657 : addend);
3659 #ifdef INCLUDE_SHMEDIA
3660 else if (r_type == R_SH_IMM_LOW16_PCREL
3661 || r_type == R_SH_IMM_MEDLOW16_PCREL
3662 || r_type == R_SH_IMM_MEDHI16_PCREL
3663 || r_type == R_SH_IMM_HI16_PCREL)
3665 BFD_ASSERT (h != NULL && h->dynindx != -1);
3666 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3667 outrel.r_addend = addend;
3669 #endif
3670 else
3672 /* h->dynindx may be -1 if this symbol was marked to
3673 become local. */
3674 if (h == NULL
3675 || ((info->symbolic || h->dynindx == -1)
3676 && h->def_regular))
3678 relocate = howto->partial_inplace;
3679 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3681 else
3683 BFD_ASSERT (h->dynindx != -1);
3684 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3686 outrel.r_addend = relocation;
3687 outrel.r_addend
3688 += (howto->partial_inplace
3689 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3690 : addend);
3693 loc = sreloc->contents;
3694 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3695 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3697 /* If this reloc is against an external symbol, we do
3698 not want to fiddle with the addend. Otherwise, we
3699 need to include the symbol value so that it becomes
3700 an addend for the dynamic reloc. */
3701 if (! relocate)
3702 continue;
3704 goto final_link_relocate;
3706 case R_SH_GOTPLT32:
3707 #ifdef INCLUDE_SHMEDIA
3708 case R_SH_GOTPLT_LOW16:
3709 case R_SH_GOTPLT_MEDLOW16:
3710 case R_SH_GOTPLT_MEDHI16:
3711 case R_SH_GOTPLT_HI16:
3712 case R_SH_GOTPLT10BY4:
3713 case R_SH_GOTPLT10BY8:
3714 #endif
3715 /* Relocation is to the entry for this symbol in the
3716 procedure linkage table. */
3718 if (h == NULL
3719 || h->forced_local
3720 || ! info->shared
3721 || info->symbolic
3722 || h->dynindx == -1
3723 || h->plt.offset == (bfd_vma) -1
3724 || h->got.offset != (bfd_vma) -1)
3725 goto force_got;
3727 /* Relocation is to the entry for this symbol in the global
3728 offset table extension for the procedure linkage table. */
3730 BFD_ASSERT (sgotplt != NULL);
3731 relocation = (sgotplt->output_offset
3732 + (get_plt_index (htab->plt_info, h->plt.offset)
3733 + 3) * 4);
3735 #ifdef GOT_BIAS
3736 relocation -= GOT_BIAS;
3737 #endif
3739 goto final_link_relocate;
3741 force_got:
3742 case R_SH_GOT32:
3743 #ifdef INCLUDE_SHMEDIA
3744 case R_SH_GOT_LOW16:
3745 case R_SH_GOT_MEDLOW16:
3746 case R_SH_GOT_MEDHI16:
3747 case R_SH_GOT_HI16:
3748 case R_SH_GOT10BY4:
3749 case R_SH_GOT10BY8:
3750 #endif
3751 /* Relocation is to the entry for this symbol in the global
3752 offset table. */
3754 BFD_ASSERT (sgot != NULL);
3756 if (h != NULL)
3758 bfd_boolean dyn;
3760 off = h->got.offset;
3761 #ifdef INCLUDE_SHMEDIA
3762 if (seen_stt_datalabel)
3764 struct elf_sh_link_hash_entry *hsh;
3766 hsh = (struct elf_sh_link_hash_entry *)h;
3767 off = hsh->datalabel_got.offset;
3769 #endif
3770 BFD_ASSERT (off != (bfd_vma) -1);
3772 dyn = htab->root.dynamic_sections_created;
3773 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3774 || (info->shared
3775 && SYMBOL_REFERENCES_LOCAL (info, h))
3776 || (ELF_ST_VISIBILITY (h->other)
3777 && h->root.type == bfd_link_hash_undefweak))
3779 /* This is actually a static link, or it is a
3780 -Bsymbolic link and the symbol is defined
3781 locally, or the symbol was forced to be local
3782 because of a version file. We must initialize
3783 this entry in the global offset table. Since the
3784 offset must always be a multiple of 4, we use the
3785 least significant bit to record whether we have
3786 initialized it already.
3788 When doing a dynamic link, we create a .rela.got
3789 relocation entry to initialize the value. This
3790 is done in the finish_dynamic_symbol routine. */
3791 if ((off & 1) != 0)
3792 off &= ~1;
3793 else
3795 bfd_put_32 (output_bfd, relocation,
3796 sgot->contents + off);
3797 #ifdef INCLUDE_SHMEDIA
3798 if (seen_stt_datalabel)
3800 struct elf_sh_link_hash_entry *hsh;
3802 hsh = (struct elf_sh_link_hash_entry *)h;
3803 hsh->datalabel_got.offset |= 1;
3805 else
3806 #endif
3807 h->got.offset |= 1;
3811 relocation = sgot->output_offset + off;
3813 else
3815 #ifdef INCLUDE_SHMEDIA
3816 if (rel->r_addend)
3818 BFD_ASSERT (local_got_offsets != NULL
3819 && (local_got_offsets[symtab_hdr->sh_info
3820 + r_symndx]
3821 != (bfd_vma) -1));
3823 off = local_got_offsets[symtab_hdr->sh_info
3824 + r_symndx];
3826 else
3828 #endif
3829 BFD_ASSERT (local_got_offsets != NULL
3830 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3832 off = local_got_offsets[r_symndx];
3833 #ifdef INCLUDE_SHMEDIA
3835 #endif
3837 /* The offset must always be a multiple of 4. We use
3838 the least significant bit to record whether we have
3839 already generated the necessary reloc. */
3840 if ((off & 1) != 0)
3841 off &= ~1;
3842 else
3844 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3846 if (info->shared)
3848 Elf_Internal_Rela outrel;
3849 bfd_byte *loc;
3851 if (srelgot == NULL)
3853 srelgot = bfd_get_section_by_name (dynobj,
3854 ".rela.got");
3855 BFD_ASSERT (srelgot != NULL);
3858 outrel.r_offset = (sgot->output_section->vma
3859 + sgot->output_offset
3860 + off);
3861 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3862 outrel.r_addend = relocation;
3863 loc = srelgot->contents;
3864 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3865 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3868 #ifdef INCLUDE_SHMEDIA
3869 if (rel->r_addend)
3870 local_got_offsets[symtab_hdr->sh_info + r_symndx] |= 1;
3871 else
3872 #endif
3873 local_got_offsets[r_symndx] |= 1;
3876 relocation = sgot->output_offset + off;
3879 #ifdef GOT_BIAS
3880 relocation -= GOT_BIAS;
3881 #endif
3883 goto final_link_relocate;
3885 case R_SH_GOTOFF:
3886 #ifdef INCLUDE_SHMEDIA
3887 case R_SH_GOTOFF_LOW16:
3888 case R_SH_GOTOFF_MEDLOW16:
3889 case R_SH_GOTOFF_MEDHI16:
3890 case R_SH_GOTOFF_HI16:
3891 #endif
3892 /* Relocation is relative to the start of the global offset
3893 table. */
3895 BFD_ASSERT (sgot != NULL);
3897 /* Note that sgot->output_offset is not involved in this
3898 calculation. We always want the start of .got. If we
3899 defined _GLOBAL_OFFSET_TABLE in a different way, as is
3900 permitted by the ABI, we might have to change this
3901 calculation. */
3902 relocation -= sgot->output_section->vma;
3904 #ifdef GOT_BIAS
3905 relocation -= GOT_BIAS;
3906 #endif
3908 addend = rel->r_addend;
3910 goto final_link_relocate;
3912 case R_SH_GOTPC:
3913 #ifdef INCLUDE_SHMEDIA
3914 case R_SH_GOTPC_LOW16:
3915 case R_SH_GOTPC_MEDLOW16:
3916 case R_SH_GOTPC_MEDHI16:
3917 case R_SH_GOTPC_HI16:
3918 #endif
3919 /* Use global offset table as symbol value. */
3921 BFD_ASSERT (sgot != NULL);
3922 relocation = sgot->output_section->vma;
3924 #ifdef GOT_BIAS
3925 relocation += GOT_BIAS;
3926 #endif
3928 addend = rel->r_addend;
3930 goto final_link_relocate;
3932 case R_SH_PLT32:
3933 #ifdef INCLUDE_SHMEDIA
3934 case R_SH_PLT_LOW16:
3935 case R_SH_PLT_MEDLOW16:
3936 case R_SH_PLT_MEDHI16:
3937 case R_SH_PLT_HI16:
3938 #endif
3939 /* Relocation is to the entry for this symbol in the
3940 procedure linkage table. */
3942 /* Resolve a PLT reloc against a local symbol directly,
3943 without using the procedure linkage table. */
3944 if (h == NULL)
3945 goto final_link_relocate;
3947 if (h->forced_local)
3948 goto final_link_relocate;
3950 if (h->plt.offset == (bfd_vma) -1)
3952 /* We didn't make a PLT entry for this symbol. This
3953 happens when statically linking PIC code, or when
3954 using -Bsymbolic. */
3955 goto final_link_relocate;
3958 BFD_ASSERT (splt != NULL);
3959 relocation = (splt->output_section->vma
3960 + splt->output_offset
3961 + h->plt.offset);
3963 #ifdef INCLUDE_SHMEDIA
3964 relocation++;
3965 #endif
3967 addend = rel->r_addend;
3969 goto final_link_relocate;
3971 case R_SH_LOOP_START:
3973 static bfd_vma start, end;
3975 start = (relocation + rel->r_addend
3976 - (sec->output_section->vma + sec->output_offset));
3977 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3978 rel->r_offset, sec, start, end);
3979 break;
3981 case R_SH_LOOP_END:
3982 end = (relocation + rel->r_addend
3983 - (sec->output_section->vma + sec->output_offset));
3984 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3985 rel->r_offset, sec, start, end);
3986 break;
3989 case R_SH_TLS_GD_32:
3990 case R_SH_TLS_IE_32:
3991 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
3992 tls_type = GOT_UNKNOWN;
3993 if (h == NULL && local_got_offsets)
3994 tls_type = sh_elf_local_got_tls_type (input_bfd) [r_symndx];
3995 else if (h != NULL)
3997 tls_type = sh_elf_hash_entry (h)->tls_type;
3998 if (! info->shared
3999 && (h->dynindx == -1
4000 || h->def_regular))
4001 r_type = R_SH_TLS_LE_32;
4004 if (r_type == R_SH_TLS_GD_32 && tls_type == GOT_TLS_IE)
4005 r_type = R_SH_TLS_IE_32;
4007 if (r_type == R_SH_TLS_LE_32)
4009 bfd_vma offset;
4010 unsigned short insn;
4012 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4014 /* GD->LE transition:
4015 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4016 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4017 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4018 We change it into:
4019 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4020 nop; nop; ...
4021 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4023 offset = rel->r_offset;
4024 BFD_ASSERT (offset >= 16);
4025 /* Size of GD instructions is 16 or 18. */
4026 offset -= 16;
4027 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4028 if ((insn & 0xff00) == 0xc700)
4030 BFD_ASSERT (offset >= 2);
4031 offset -= 2;
4032 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4035 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4036 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4037 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4038 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4039 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4040 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4041 BFD_ASSERT (insn == 0x310c);
4042 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4043 BFD_ASSERT (insn == 0x410b);
4044 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4045 BFD_ASSERT (insn == 0x34cc);
4047 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4048 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4049 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4050 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4051 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4053 else
4055 int index;
4057 /* IE->LE transition:
4058 mov.l 1f,r0; stc gbr,rN; mov.l @(r0,r12),rM;
4059 bra 2f; add ...; .align 2; 1: x@GOTTPOFF; 2:
4060 We change it into:
4061 mov.l .Ln,rM; stc gbr,rN; nop; ...;
4062 1: x@TPOFF; 2:. */
4064 offset = rel->r_offset;
4065 BFD_ASSERT (offset >= 16);
4066 /* Size of IE instructions is 10 or 12. */
4067 offset -= 10;
4068 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4069 if ((insn & 0xf0ff) == 0x0012)
4071 BFD_ASSERT (offset >= 2);
4072 offset -= 2;
4073 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4076 BFD_ASSERT ((insn & 0xff00) == 0xd000);
4077 index = insn & 0x00ff;
4078 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4079 BFD_ASSERT ((insn & 0xf0ff) == 0x0012);
4080 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4081 BFD_ASSERT ((insn & 0xf0ff) == 0x00ce);
4082 insn = 0xd000 | (insn & 0x0f00) | index;
4083 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4084 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4087 bfd_put_32 (output_bfd, tpoff (info, relocation),
4088 contents + rel->r_offset);
4089 continue;
4092 sgot = htab->sgot;
4093 if (sgot == NULL)
4094 abort ();
4096 if (h != NULL)
4097 off = h->got.offset;
4098 else
4100 if (local_got_offsets == NULL)
4101 abort ();
4103 off = local_got_offsets[r_symndx];
4106 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4107 if (r_type == R_SH_TLS_IE_32
4108 && ! htab->root.dynamic_sections_created)
4110 off &= ~1;
4111 bfd_put_32 (output_bfd, tpoff (info, relocation),
4112 sgot->contents + off);
4113 bfd_put_32 (output_bfd, sgot->output_offset + off,
4114 contents + rel->r_offset);
4115 continue;
4118 if ((off & 1) != 0)
4119 off &= ~1;
4120 else
4122 Elf_Internal_Rela outrel;
4123 bfd_byte *loc;
4124 int dr_type, indx;
4126 if (srelgot == NULL)
4128 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4129 BFD_ASSERT (srelgot != NULL);
4132 outrel.r_offset = (sgot->output_section->vma
4133 + sgot->output_offset + off);
4135 if (h == NULL || h->dynindx == -1)
4136 indx = 0;
4137 else
4138 indx = h->dynindx;
4140 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4141 R_SH_TLS_TPOFF32);
4142 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4143 outrel.r_addend = relocation - dtpoff_base (info);
4144 else
4145 outrel.r_addend = 0;
4146 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4147 loc = srelgot->contents;
4148 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4149 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4151 if (r_type == R_SH_TLS_GD_32)
4153 if (indx == 0)
4155 bfd_put_32 (output_bfd,
4156 relocation - dtpoff_base (info),
4157 sgot->contents + off + 4);
4159 else
4161 outrel.r_info = ELF32_R_INFO (indx,
4162 R_SH_TLS_DTPOFF32);
4163 outrel.r_offset += 4;
4164 outrel.r_addend = 0;
4165 srelgot->reloc_count++;
4166 loc += sizeof (Elf32_External_Rela);
4167 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4171 if (h != NULL)
4172 h->got.offset |= 1;
4173 else
4174 local_got_offsets[r_symndx] |= 1;
4177 if (off >= (bfd_vma) -2)
4178 abort ();
4180 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4181 relocation = sgot->output_offset + off;
4182 else
4184 bfd_vma offset;
4185 unsigned short insn;
4187 /* GD->IE transition:
4188 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4189 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4190 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4191 We change it into:
4192 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4193 nop; nop; bra 3f; nop; .align 2;
4194 1: .long x@TPOFF; 2:...; 3:. */
4196 offset = rel->r_offset;
4197 BFD_ASSERT (offset >= 16);
4198 /* Size of GD instructions is 16 or 18. */
4199 offset -= 16;
4200 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4201 if ((insn & 0xff00) == 0xc700)
4203 BFD_ASSERT (offset >= 2);
4204 offset -= 2;
4205 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4208 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4210 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4211 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4213 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4214 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4215 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4216 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4217 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4218 BFD_ASSERT (insn == 0x310c);
4219 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4220 BFD_ASSERT (insn == 0x410b);
4221 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4222 BFD_ASSERT (insn == 0x34cc);
4224 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4225 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4226 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4227 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4228 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4230 bfd_put_32 (output_bfd, sgot->output_offset + off,
4231 contents + rel->r_offset);
4233 continue;
4236 addend = rel->r_addend;
4238 goto final_link_relocate;
4240 case R_SH_TLS_LD_32:
4241 if (! info->shared)
4243 bfd_vma offset;
4244 unsigned short insn;
4246 /* LD->LE transition:
4247 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4248 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4249 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4250 We change it into:
4251 stc gbr,r0; nop; nop; nop;
4252 nop; nop; bra 3f; ...; 3:. */
4254 offset = rel->r_offset;
4255 BFD_ASSERT (offset >= 16);
4256 /* Size of LD instructions is 16 or 18. */
4257 offset -= 16;
4258 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4259 if ((insn & 0xff00) == 0xc700)
4261 BFD_ASSERT (offset >= 2);
4262 offset -= 2;
4263 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4266 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4267 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4268 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4269 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4270 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4271 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4272 BFD_ASSERT (insn == 0x310c);
4273 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4274 BFD_ASSERT (insn == 0x410b);
4275 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4276 BFD_ASSERT (insn == 0x34cc);
4278 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4279 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4280 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4281 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4282 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4283 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4285 continue;
4288 sgot = htab->sgot;
4289 if (sgot == NULL)
4290 abort ();
4292 off = htab->tls_ldm_got.offset;
4293 if (off & 1)
4294 off &= ~1;
4295 else
4297 Elf_Internal_Rela outrel;
4298 bfd_byte *loc;
4300 srelgot = htab->srelgot;
4301 if (srelgot == NULL)
4302 abort ();
4304 outrel.r_offset = (sgot->output_section->vma
4305 + sgot->output_offset + off);
4306 outrel.r_addend = 0;
4307 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4308 loc = srelgot->contents;
4309 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4310 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4311 htab->tls_ldm_got.offset |= 1;
4314 relocation = sgot->output_offset + off;
4315 addend = rel->r_addend;
4317 goto final_link_relocate;
4319 case R_SH_TLS_LDO_32:
4320 if (! info->shared)
4321 relocation = tpoff (info, relocation);
4322 else
4323 relocation -= dtpoff_base (info);
4325 addend = rel->r_addend;
4326 goto final_link_relocate;
4328 case R_SH_TLS_LE_32:
4330 int indx;
4331 Elf_Internal_Rela outrel;
4332 bfd_byte *loc;
4334 if (! info->shared)
4336 relocation = tpoff (info, relocation);
4337 addend = rel->r_addend;
4338 goto final_link_relocate;
4341 if (sreloc == NULL)
4343 sreloc = _bfd_elf_get_dynamic_reloc_section
4344 (input_bfd, input_section, /*rela?*/ TRUE);
4345 if (sreloc == NULL)
4346 return FALSE;
4349 if (h == NULL || h->dynindx == -1)
4350 indx = 0;
4351 else
4352 indx = h->dynindx;
4354 outrel.r_offset = (input_section->output_section->vma
4355 + input_section->output_offset
4356 + rel->r_offset);
4357 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4358 if (indx == 0)
4359 outrel.r_addend = relocation - dtpoff_base (info);
4360 else
4361 outrel.r_addend = 0;
4363 loc = sreloc->contents;
4364 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4365 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4366 continue;
4370 relocation_done:
4371 if (r != bfd_reloc_ok)
4373 switch (r)
4375 default:
4376 case bfd_reloc_outofrange:
4377 abort ();
4378 case bfd_reloc_overflow:
4380 const char *name;
4382 if (h != NULL)
4383 name = NULL;
4384 else
4386 name = (bfd_elf_string_from_elf_section
4387 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4388 if (name == NULL)
4389 return FALSE;
4390 if (*name == '\0')
4391 name = bfd_section_name (input_bfd, sec);
4393 if (! ((*info->callbacks->reloc_overflow)
4394 (info, (h ? &h->root : NULL), name, howto->name,
4395 (bfd_vma) 0, input_bfd, input_section,
4396 rel->r_offset)))
4397 return FALSE;
4399 break;
4404 return TRUE;
4407 /* This is a version of bfd_generic_get_relocated_section_contents
4408 which uses sh_elf_relocate_section. */
4410 static bfd_byte *
4411 sh_elf_get_relocated_section_contents (bfd *output_bfd,
4412 struct bfd_link_info *link_info,
4413 struct bfd_link_order *link_order,
4414 bfd_byte *data,
4415 bfd_boolean relocatable,
4416 asymbol **symbols)
4418 Elf_Internal_Shdr *symtab_hdr;
4419 asection *input_section = link_order->u.indirect.section;
4420 bfd *input_bfd = input_section->owner;
4421 asection **sections = NULL;
4422 Elf_Internal_Rela *internal_relocs = NULL;
4423 Elf_Internal_Sym *isymbuf = NULL;
4425 /* We only need to handle the case of relaxing, or of having a
4426 particular set of section contents, specially. */
4427 if (relocatable
4428 || elf_section_data (input_section)->this_hdr.contents == NULL)
4429 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
4430 link_order, data,
4431 relocatable,
4432 symbols);
4434 symtab_hdr = &elf_symtab_hdr (input_bfd);
4436 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
4437 (size_t) input_section->size);
4439 if ((input_section->flags & SEC_RELOC) != 0
4440 && input_section->reloc_count > 0)
4442 asection **secpp;
4443 Elf_Internal_Sym *isym, *isymend;
4444 bfd_size_type amt;
4446 internal_relocs = (_bfd_elf_link_read_relocs
4447 (input_bfd, input_section, NULL,
4448 (Elf_Internal_Rela *) NULL, FALSE));
4449 if (internal_relocs == NULL)
4450 goto error_return;
4452 if (symtab_hdr->sh_info != 0)
4454 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4455 if (isymbuf == NULL)
4456 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4457 symtab_hdr->sh_info, 0,
4458 NULL, NULL, NULL);
4459 if (isymbuf == NULL)
4460 goto error_return;
4463 amt = symtab_hdr->sh_info;
4464 amt *= sizeof (asection *);
4465 sections = (asection **) bfd_malloc (amt);
4466 if (sections == NULL && amt != 0)
4467 goto error_return;
4469 isymend = isymbuf + symtab_hdr->sh_info;
4470 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
4472 asection *isec;
4474 if (isym->st_shndx == SHN_UNDEF)
4475 isec = bfd_und_section_ptr;
4476 else if (isym->st_shndx == SHN_ABS)
4477 isec = bfd_abs_section_ptr;
4478 else if (isym->st_shndx == SHN_COMMON)
4479 isec = bfd_com_section_ptr;
4480 else
4481 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
4483 *secpp = isec;
4486 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
4487 input_section, data, internal_relocs,
4488 isymbuf, sections))
4489 goto error_return;
4491 if (sections != NULL)
4492 free (sections);
4493 if (isymbuf != NULL
4494 && symtab_hdr->contents != (unsigned char *) isymbuf)
4495 free (isymbuf);
4496 if (elf_section_data (input_section)->relocs != internal_relocs)
4497 free (internal_relocs);
4500 return data;
4502 error_return:
4503 if (sections != NULL)
4504 free (sections);
4505 if (isymbuf != NULL
4506 && symtab_hdr->contents != (unsigned char *) isymbuf)
4507 free (isymbuf);
4508 if (internal_relocs != NULL
4509 && elf_section_data (input_section)->relocs != internal_relocs)
4510 free (internal_relocs);
4511 return NULL;
4514 /* Return the base VMA address which should be subtracted from real addresses
4515 when resolving @dtpoff relocation.
4516 This is PT_TLS segment p_vaddr. */
4518 static bfd_vma
4519 dtpoff_base (struct bfd_link_info *info)
4521 /* If tls_sec is NULL, we should have signalled an error already. */
4522 if (elf_hash_table (info)->tls_sec == NULL)
4523 return 0;
4524 return elf_hash_table (info)->tls_sec->vma;
4527 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
4529 static bfd_vma
4530 tpoff (struct bfd_link_info *info, bfd_vma address)
4532 /* If tls_sec is NULL, we should have signalled an error already. */
4533 if (elf_hash_table (info)->tls_sec == NULL)
4534 return 0;
4535 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
4536 structure which has 2 pointer fields. */
4537 return (address - elf_hash_table (info)->tls_sec->vma
4538 + align_power ((bfd_vma) 8,
4539 elf_hash_table (info)->tls_sec->alignment_power));
4542 static asection *
4543 sh_elf_gc_mark_hook (asection *sec,
4544 struct bfd_link_info *info,
4545 Elf_Internal_Rela *rel,
4546 struct elf_link_hash_entry *h,
4547 Elf_Internal_Sym *sym)
4549 if (h != NULL)
4550 switch (ELF32_R_TYPE (rel->r_info))
4552 case R_SH_GNU_VTINHERIT:
4553 case R_SH_GNU_VTENTRY:
4554 return NULL;
4557 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4560 /* Update the got entry reference counts for the section being removed. */
4562 static bfd_boolean
4563 sh_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4564 asection *sec, const Elf_Internal_Rela *relocs)
4566 Elf_Internal_Shdr *symtab_hdr;
4567 struct elf_link_hash_entry **sym_hashes;
4568 bfd_signed_vma *local_got_refcounts;
4569 const Elf_Internal_Rela *rel, *relend;
4571 if (info->relocatable)
4572 return TRUE;
4574 elf_section_data (sec)->local_dynrel = NULL;
4576 symtab_hdr = &elf_symtab_hdr (abfd);
4577 sym_hashes = elf_sym_hashes (abfd);
4578 local_got_refcounts = elf_local_got_refcounts (abfd);
4580 relend = relocs + sec->reloc_count;
4581 for (rel = relocs; rel < relend; rel++)
4583 unsigned long r_symndx;
4584 unsigned int r_type;
4585 struct elf_link_hash_entry *h = NULL;
4586 #ifdef INCLUDE_SHMEDIA
4587 int seen_stt_datalabel = 0;
4588 #endif
4590 r_symndx = ELF32_R_SYM (rel->r_info);
4591 if (r_symndx >= symtab_hdr->sh_info)
4593 struct elf_sh_link_hash_entry *eh;
4594 struct elf_sh_dyn_relocs **pp;
4595 struct elf_sh_dyn_relocs *p;
4597 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4598 while (h->root.type == bfd_link_hash_indirect
4599 || h->root.type == bfd_link_hash_warning)
4601 #ifdef INCLUDE_SHMEDIA
4602 seen_stt_datalabel |= h->type == STT_DATALABEL;
4603 #endif
4604 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4606 eh = (struct elf_sh_link_hash_entry *) h;
4607 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4608 if (p->sec == sec)
4610 /* Everything must go for SEC. */
4611 *pp = p->next;
4612 break;
4616 r_type = ELF32_R_TYPE (rel->r_info);
4617 switch (sh_elf_optimized_tls_reloc (info, r_type, h != NULL))
4619 case R_SH_TLS_LD_32:
4620 if (sh_elf_hash_table (info)->tls_ldm_got.refcount > 0)
4621 sh_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
4622 break;
4624 case R_SH_GOT32:
4625 case R_SH_GOTOFF:
4626 case R_SH_GOTPC:
4627 #ifdef INCLUDE_SHMEDIA
4628 case R_SH_GOT_LOW16:
4629 case R_SH_GOT_MEDLOW16:
4630 case R_SH_GOT_MEDHI16:
4631 case R_SH_GOT_HI16:
4632 case R_SH_GOT10BY4:
4633 case R_SH_GOT10BY8:
4634 case R_SH_GOTOFF_LOW16:
4635 case R_SH_GOTOFF_MEDLOW16:
4636 case R_SH_GOTOFF_MEDHI16:
4637 case R_SH_GOTOFF_HI16:
4638 case R_SH_GOTPC_LOW16:
4639 case R_SH_GOTPC_MEDLOW16:
4640 case R_SH_GOTPC_MEDHI16:
4641 case R_SH_GOTPC_HI16:
4642 #endif
4643 case R_SH_TLS_GD_32:
4644 case R_SH_TLS_IE_32:
4645 if (h != NULL)
4647 #ifdef INCLUDE_SHMEDIA
4648 if (seen_stt_datalabel)
4650 struct elf_sh_link_hash_entry *eh;
4651 eh = (struct elf_sh_link_hash_entry *) h;
4652 if (eh->datalabel_got.refcount > 0)
4653 eh->datalabel_got.refcount -= 1;
4655 else
4656 #endif
4657 if (h->got.refcount > 0)
4658 h->got.refcount -= 1;
4660 else if (local_got_refcounts != NULL)
4662 #ifdef INCLUDE_SHMEDIA
4663 if (rel->r_addend & 1)
4665 if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4666 local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4668 else
4669 #endif
4670 if (local_got_refcounts[r_symndx] > 0)
4671 local_got_refcounts[r_symndx] -= 1;
4673 break;
4675 case R_SH_DIR32:
4676 case R_SH_REL32:
4677 if (info->shared)
4678 break;
4679 /* Fall thru */
4681 case R_SH_PLT32:
4682 #ifdef INCLUDE_SHMEDIA
4683 case R_SH_PLT_LOW16:
4684 case R_SH_PLT_MEDLOW16:
4685 case R_SH_PLT_MEDHI16:
4686 case R_SH_PLT_HI16:
4687 #endif
4688 if (h != NULL)
4690 if (h->plt.refcount > 0)
4691 h->plt.refcount -= 1;
4693 break;
4695 case R_SH_GOTPLT32:
4696 #ifdef INCLUDE_SHMEDIA
4697 case R_SH_GOTPLT_LOW16:
4698 case R_SH_GOTPLT_MEDLOW16:
4699 case R_SH_GOTPLT_MEDHI16:
4700 case R_SH_GOTPLT_HI16:
4701 case R_SH_GOTPLT10BY4:
4702 case R_SH_GOTPLT10BY8:
4703 #endif
4704 if (h != NULL)
4706 struct elf_sh_link_hash_entry *eh;
4707 eh = (struct elf_sh_link_hash_entry *) h;
4708 if (eh->gotplt_refcount > 0)
4710 eh->gotplt_refcount -= 1;
4711 if (h->plt.refcount > 0)
4712 h->plt.refcount -= 1;
4714 #ifdef INCLUDE_SHMEDIA
4715 else if (seen_stt_datalabel)
4717 if (eh->datalabel_got.refcount > 0)
4718 eh->datalabel_got.refcount -= 1;
4720 #endif
4721 else if (h->got.refcount > 0)
4722 h->got.refcount -= 1;
4724 else if (local_got_refcounts != NULL)
4726 #ifdef INCLUDE_SHMEDIA
4727 if (rel->r_addend & 1)
4729 if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4730 local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4732 else
4733 #endif
4734 if (local_got_refcounts[r_symndx] > 0)
4735 local_got_refcounts[r_symndx] -= 1;
4737 break;
4739 default:
4740 break;
4744 return TRUE;
4747 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4749 static void
4750 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
4751 struct elf_link_hash_entry *dir,
4752 struct elf_link_hash_entry *ind)
4754 struct elf_sh_link_hash_entry *edir, *eind;
4756 edir = (struct elf_sh_link_hash_entry *) dir;
4757 eind = (struct elf_sh_link_hash_entry *) ind;
4759 if (eind->dyn_relocs != NULL)
4761 if (edir->dyn_relocs != NULL)
4763 struct elf_sh_dyn_relocs **pp;
4764 struct elf_sh_dyn_relocs *p;
4766 /* Add reloc counts against the indirect sym to the direct sym
4767 list. Merge any entries against the same section. */
4768 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4770 struct elf_sh_dyn_relocs *q;
4772 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4773 if (q->sec == p->sec)
4775 q->pc_count += p->pc_count;
4776 q->count += p->count;
4777 *pp = p->next;
4778 break;
4780 if (q == NULL)
4781 pp = &p->next;
4783 *pp = edir->dyn_relocs;
4786 edir->dyn_relocs = eind->dyn_relocs;
4787 eind->dyn_relocs = NULL;
4789 edir->gotplt_refcount = eind->gotplt_refcount;
4790 eind->gotplt_refcount = 0;
4791 #ifdef INCLUDE_SHMEDIA
4792 edir->datalabel_got.refcount += eind->datalabel_got.refcount;
4793 eind->datalabel_got.refcount = 0;
4794 #endif
4796 if (ind->root.type == bfd_link_hash_indirect
4797 && dir->got.refcount <= 0)
4799 edir->tls_type = eind->tls_type;
4800 eind->tls_type = GOT_UNKNOWN;
4803 if (ind->root.type != bfd_link_hash_indirect
4804 && dir->dynamic_adjusted)
4806 /* If called to transfer flags for a weakdef during processing
4807 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
4808 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4809 dir->ref_dynamic |= ind->ref_dynamic;
4810 dir->ref_regular |= ind->ref_regular;
4811 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
4812 dir->needs_plt |= ind->needs_plt;
4814 else
4815 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
4818 static int
4819 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
4820 int is_local)
4822 if (info->shared)
4823 return r_type;
4825 switch (r_type)
4827 case R_SH_TLS_GD_32:
4828 case R_SH_TLS_IE_32:
4829 if (is_local)
4830 return R_SH_TLS_LE_32;
4831 return R_SH_TLS_IE_32;
4832 case R_SH_TLS_LD_32:
4833 return R_SH_TLS_LE_32;
4836 return r_type;
4839 /* Look through the relocs for a section during the first phase.
4840 Since we don't do .gots or .plts, we just need to consider the
4841 virtual table relocs for gc. */
4843 static bfd_boolean
4844 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
4845 const Elf_Internal_Rela *relocs)
4847 Elf_Internal_Shdr *symtab_hdr;
4848 struct elf_link_hash_entry **sym_hashes;
4849 struct elf_sh_link_hash_table *htab;
4850 const Elf_Internal_Rela *rel;
4851 const Elf_Internal_Rela *rel_end;
4852 bfd_vma *local_got_offsets;
4853 asection *sgot;
4854 asection *srelgot;
4855 asection *sreloc;
4856 unsigned int r_type;
4857 int tls_type, old_tls_type;
4859 sgot = NULL;
4860 srelgot = NULL;
4861 sreloc = NULL;
4863 if (info->relocatable)
4864 return TRUE;
4866 BFD_ASSERT (is_sh_elf (abfd));
4868 symtab_hdr = &elf_symtab_hdr (abfd);
4869 sym_hashes = elf_sym_hashes (abfd);
4871 htab = sh_elf_hash_table (info);
4872 local_got_offsets = elf_local_got_offsets (abfd);
4874 rel_end = relocs + sec->reloc_count;
4875 for (rel = relocs; rel < rel_end; rel++)
4877 struct elf_link_hash_entry *h;
4878 unsigned long r_symndx;
4879 #ifdef INCLUDE_SHMEDIA
4880 int seen_stt_datalabel = 0;
4881 #endif
4883 r_symndx = ELF32_R_SYM (rel->r_info);
4884 r_type = ELF32_R_TYPE (rel->r_info);
4886 if (r_symndx < symtab_hdr->sh_info)
4887 h = NULL;
4888 else
4890 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4891 while (h->root.type == bfd_link_hash_indirect
4892 || h->root.type == bfd_link_hash_warning)
4894 #ifdef INCLUDE_SHMEDIA
4895 seen_stt_datalabel |= h->type == STT_DATALABEL;
4896 #endif
4897 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4901 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4902 if (! info->shared
4903 && r_type == R_SH_TLS_IE_32
4904 && h != NULL
4905 && h->root.type != bfd_link_hash_undefined
4906 && h->root.type != bfd_link_hash_undefweak
4907 && (h->dynindx == -1
4908 || h->def_regular))
4909 r_type = R_SH_TLS_LE_32;
4911 /* Some relocs require a global offset table. */
4912 if (htab->sgot == NULL)
4914 switch (r_type)
4916 case R_SH_GOTPLT32:
4917 case R_SH_GOT32:
4918 case R_SH_GOTOFF:
4919 case R_SH_GOTPC:
4920 #ifdef INCLUDE_SHMEDIA
4921 case R_SH_GOTPLT_LOW16:
4922 case R_SH_GOTPLT_MEDLOW16:
4923 case R_SH_GOTPLT_MEDHI16:
4924 case R_SH_GOTPLT_HI16:
4925 case R_SH_GOTPLT10BY4:
4926 case R_SH_GOTPLT10BY8:
4927 case R_SH_GOT_LOW16:
4928 case R_SH_GOT_MEDLOW16:
4929 case R_SH_GOT_MEDHI16:
4930 case R_SH_GOT_HI16:
4931 case R_SH_GOT10BY4:
4932 case R_SH_GOT10BY8:
4933 case R_SH_GOTOFF_LOW16:
4934 case R_SH_GOTOFF_MEDLOW16:
4935 case R_SH_GOTOFF_MEDHI16:
4936 case R_SH_GOTOFF_HI16:
4937 case R_SH_GOTPC_LOW16:
4938 case R_SH_GOTPC_MEDLOW16:
4939 case R_SH_GOTPC_MEDHI16:
4940 case R_SH_GOTPC_HI16:
4941 #endif
4942 case R_SH_TLS_GD_32:
4943 case R_SH_TLS_LD_32:
4944 case R_SH_TLS_IE_32:
4945 if (htab->sgot == NULL)
4947 if (htab->root.dynobj == NULL)
4948 htab->root.dynobj = abfd;
4949 if (!create_got_section (htab->root.dynobj, info))
4950 return FALSE;
4952 break;
4954 default:
4955 break;
4959 switch (r_type)
4961 /* This relocation describes the C++ object vtable hierarchy.
4962 Reconstruct it for later use during GC. */
4963 case R_SH_GNU_VTINHERIT:
4964 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4965 return FALSE;
4966 break;
4968 /* This relocation describes which C++ vtable entries are actually
4969 used. Record for later use during GC. */
4970 case R_SH_GNU_VTENTRY:
4971 BFD_ASSERT (h != NULL);
4972 if (h != NULL
4973 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4974 return FALSE;
4975 break;
4977 case R_SH_TLS_IE_32:
4978 if (info->shared)
4979 info->flags |= DF_STATIC_TLS;
4981 /* FALLTHROUGH */
4982 force_got:
4983 case R_SH_TLS_GD_32:
4984 case R_SH_GOT32:
4985 #ifdef INCLUDE_SHMEDIA
4986 case R_SH_GOT_LOW16:
4987 case R_SH_GOT_MEDLOW16:
4988 case R_SH_GOT_MEDHI16:
4989 case R_SH_GOT_HI16:
4990 case R_SH_GOT10BY4:
4991 case R_SH_GOT10BY8:
4992 #endif
4993 switch (r_type)
4995 default:
4996 tls_type = GOT_NORMAL;
4997 break;
4998 case R_SH_TLS_GD_32:
4999 tls_type = GOT_TLS_GD;
5000 break;
5001 case R_SH_TLS_IE_32:
5002 tls_type = GOT_TLS_IE;
5003 break;
5006 if (h != NULL)
5008 #ifdef INCLUDE_SHMEDIA
5009 if (seen_stt_datalabel)
5011 struct elf_sh_link_hash_entry *eh
5012 = (struct elf_sh_link_hash_entry *) h;
5014 eh->datalabel_got.refcount += 1;
5016 else
5017 #endif
5018 h->got.refcount += 1;
5019 old_tls_type = sh_elf_hash_entry (h)->tls_type;
5021 else
5023 bfd_signed_vma *local_got_refcounts;
5025 /* This is a global offset table entry for a local
5026 symbol. */
5027 local_got_refcounts = elf_local_got_refcounts (abfd);
5028 if (local_got_refcounts == NULL)
5030 bfd_size_type size;
5032 size = symtab_hdr->sh_info;
5033 size *= sizeof (bfd_signed_vma);
5034 #ifdef INCLUDE_SHMEDIA
5035 /* Reserve space for both the datalabel and
5036 codelabel local GOT offsets. */
5037 size *= 2;
5038 #endif
5039 size += symtab_hdr->sh_info;
5040 local_got_refcounts = ((bfd_signed_vma *)
5041 bfd_zalloc (abfd, size));
5042 if (local_got_refcounts == NULL)
5043 return FALSE;
5044 elf_local_got_refcounts (abfd) = local_got_refcounts;
5045 #ifdef INCLUDE_SHMEDIA
5046 /* Take care of both the datalabel and codelabel local
5047 GOT offsets. */
5048 sh_elf_local_got_tls_type (abfd)
5049 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
5050 #else
5051 sh_elf_local_got_tls_type (abfd)
5052 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5053 #endif
5055 #ifdef INCLUDE_SHMEDIA
5056 if (rel->r_addend & 1)
5057 local_got_refcounts[symtab_hdr->sh_info + r_symndx] += 1;
5058 else
5059 #endif
5060 local_got_refcounts[r_symndx] += 1;
5061 old_tls_type = sh_elf_local_got_tls_type (abfd) [r_symndx];
5064 /* If a TLS symbol is accessed using IE at least once,
5065 there is no point to use dynamic model for it. */
5066 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
5067 && (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
5069 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
5070 tls_type = GOT_TLS_IE;
5071 else
5073 (*_bfd_error_handler)
5074 (_("%B: `%s' accessed both as normal and thread local symbol"),
5075 abfd, h->root.root.string);
5076 return FALSE;
5080 if (old_tls_type != tls_type)
5082 if (h != NULL)
5083 sh_elf_hash_entry (h)->tls_type = tls_type;
5084 else
5085 sh_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
5088 break;
5090 case R_SH_TLS_LD_32:
5091 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5092 break;
5094 case R_SH_GOTPLT32:
5095 #ifdef INCLUDE_SHMEDIA
5096 case R_SH_GOTPLT_LOW16:
5097 case R_SH_GOTPLT_MEDLOW16:
5098 case R_SH_GOTPLT_MEDHI16:
5099 case R_SH_GOTPLT_HI16:
5100 case R_SH_GOTPLT10BY4:
5101 case R_SH_GOTPLT10BY8:
5102 #endif
5103 /* If this is a local symbol, we resolve it directly without
5104 creating a procedure linkage table entry. */
5106 if (h == NULL
5107 || h->forced_local
5108 || ! info->shared
5109 || info->symbolic
5110 || h->dynindx == -1)
5111 goto force_got;
5113 h->needs_plt = 1;
5114 h->plt.refcount += 1;
5115 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5117 break;
5119 case R_SH_PLT32:
5120 #ifdef INCLUDE_SHMEDIA
5121 case R_SH_PLT_LOW16:
5122 case R_SH_PLT_MEDLOW16:
5123 case R_SH_PLT_MEDHI16:
5124 case R_SH_PLT_HI16:
5125 #endif
5126 /* This symbol requires a procedure linkage table entry. We
5127 actually build the entry in adjust_dynamic_symbol,
5128 because this might be a case of linking PIC code which is
5129 never referenced by a dynamic object, in which case we
5130 don't need to generate a procedure linkage table entry
5131 after all. */
5133 /* If this is a local symbol, we resolve it directly without
5134 creating a procedure linkage table entry. */
5135 if (h == NULL)
5136 continue;
5138 if (h->forced_local)
5139 break;
5141 h->needs_plt = 1;
5142 h->plt.refcount += 1;
5143 break;
5145 case R_SH_DIR32:
5146 case R_SH_REL32:
5147 #ifdef INCLUDE_SHMEDIA
5148 case R_SH_IMM_LOW16_PCREL:
5149 case R_SH_IMM_MEDLOW16_PCREL:
5150 case R_SH_IMM_MEDHI16_PCREL:
5151 case R_SH_IMM_HI16_PCREL:
5152 #endif
5153 if (h != NULL && ! info->shared)
5155 h->non_got_ref = 1;
5156 h->plt.refcount += 1;
5159 /* If we are creating a shared library, and this is a reloc
5160 against a global symbol, or a non PC relative reloc
5161 against a local symbol, then we need to copy the reloc
5162 into the shared library. However, if we are linking with
5163 -Bsymbolic, we do not need to copy a reloc against a
5164 global symbol which is defined in an object we are
5165 including in the link (i.e., DEF_REGULAR is set). At
5166 this point we have not seen all the input files, so it is
5167 possible that DEF_REGULAR is not set now but will be set
5168 later (it is never cleared). We account for that
5169 possibility below by storing information in the
5170 dyn_relocs field of the hash table entry. A similar
5171 situation occurs when creating shared libraries and symbol
5172 visibility changes render the symbol local.
5174 If on the other hand, we are creating an executable, we
5175 may need to keep relocations for symbols satisfied by a
5176 dynamic library if we manage to avoid copy relocs for the
5177 symbol. */
5178 if ((info->shared
5179 && (sec->flags & SEC_ALLOC) != 0
5180 && (r_type != R_SH_REL32
5181 || (h != NULL
5182 && (! info->symbolic
5183 || h->root.type == bfd_link_hash_defweak
5184 || !h->def_regular))))
5185 || (! info->shared
5186 && (sec->flags & SEC_ALLOC) != 0
5187 && h != NULL
5188 && (h->root.type == bfd_link_hash_defweak
5189 || !h->def_regular)))
5191 struct elf_sh_dyn_relocs *p;
5192 struct elf_sh_dyn_relocs **head;
5194 if (htab->root.dynobj == NULL)
5195 htab->root.dynobj = abfd;
5197 /* When creating a shared object, we must copy these
5198 reloc types into the output file. We create a reloc
5199 section in dynobj and make room for this reloc. */
5200 if (sreloc == NULL)
5202 sreloc = _bfd_elf_make_dynamic_reloc_section
5203 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5205 if (sreloc == NULL)
5206 return FALSE;
5209 /* If this is a global symbol, we count the number of
5210 relocations we need for this symbol. */
5211 if (h != NULL)
5212 head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5213 else
5215 asection *s;
5216 void *vpp;
5218 /* Track dynamic relocs needed for local syms too. */
5219 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
5220 sec, r_symndx);
5221 if (s == NULL)
5222 return FALSE;
5224 vpp = &elf_section_data (s)->local_dynrel;
5225 head = (struct elf_sh_dyn_relocs **) vpp;
5228 p = *head;
5229 if (p == NULL || p->sec != sec)
5231 bfd_size_type amt = sizeof (*p);
5232 p = bfd_alloc (htab->root.dynobj, amt);
5233 if (p == NULL)
5234 return FALSE;
5235 p->next = *head;
5236 *head = p;
5237 p->sec = sec;
5238 p->count = 0;
5239 p->pc_count = 0;
5242 p->count += 1;
5243 if (r_type == R_SH_REL32
5244 #ifdef INCLUDE_SHMEDIA
5245 || r_type == R_SH_IMM_LOW16_PCREL
5246 || r_type == R_SH_IMM_MEDLOW16_PCREL
5247 || r_type == R_SH_IMM_MEDHI16_PCREL
5248 || r_type == R_SH_IMM_HI16_PCREL
5249 #endif
5251 p->pc_count += 1;
5254 break;
5256 case R_SH_TLS_LE_32:
5257 if (info->shared)
5259 (*_bfd_error_handler)
5260 (_("%B: TLS local exec code cannot be linked into shared objects"),
5261 abfd);
5262 return FALSE;
5265 break;
5267 case R_SH_TLS_LDO_32:
5268 /* Nothing to do. */
5269 break;
5271 default:
5272 break;
5276 return TRUE;
5279 #ifndef sh_elf_set_mach_from_flags
5280 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5282 static bfd_boolean
5283 sh_elf_set_mach_from_flags (bfd *abfd)
5285 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5287 if (flags >= sizeof(sh_ef_bfd_table))
5288 return FALSE;
5290 if (sh_ef_bfd_table[flags] == 0)
5291 return FALSE;
5293 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5295 return TRUE;
5299 /* Reverse table lookup for sh_ef_bfd_table[].
5300 Given a bfd MACH value from archures.c
5301 return the equivalent ELF flags from the table.
5302 Return -1 if no match is found. */
5305 sh_elf_get_flags_from_mach (unsigned long mach)
5307 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5309 for (; i>0; i--)
5310 if (sh_ef_bfd_table[i] == mach)
5311 return i;
5313 /* shouldn't get here */
5314 BFD_FAIL();
5316 return -1;
5318 #endif /* not sh_elf_set_mach_from_flags */
5320 #ifndef sh_elf_set_private_flags
5321 /* Function to keep SH specific file flags. */
5323 static bfd_boolean
5324 sh_elf_set_private_flags (bfd *abfd, flagword flags)
5326 BFD_ASSERT (! elf_flags_init (abfd)
5327 || elf_elfheader (abfd)->e_flags == flags);
5329 elf_elfheader (abfd)->e_flags = flags;
5330 elf_flags_init (abfd) = TRUE;
5331 return sh_elf_set_mach_from_flags (abfd);
5333 #endif /* not sh_elf_set_private_flags */
5335 #ifndef sh_elf_copy_private_data
5336 /* Copy backend specific data from one object module to another */
5338 static bfd_boolean
5339 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5341 /* Copy object attributes. */
5342 _bfd_elf_copy_obj_attributes (ibfd, obfd);
5344 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5345 return TRUE;
5347 return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
5349 #endif /* not sh_elf_copy_private_data */
5351 #ifndef sh_elf_merge_private_data
5353 /* This function returns the ELF architecture number that
5354 corresponds to the given arch_sh* flags. */
5357 sh_find_elf_flags (unsigned int arch_set)
5359 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5360 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5362 return sh_elf_get_flags_from_mach (bfd_mach);
5365 /* This routine initialises the elf flags when required and
5366 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5368 static bfd_boolean
5369 sh_elf_merge_private_data (bfd *ibfd, bfd *obfd)
5371 extern bfd_boolean sh_merge_bfd_arch (bfd *, bfd *);
5373 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5374 return TRUE;
5376 if (! elf_flags_init (obfd))
5378 /* This happens when ld starts out with a 'blank' output file. */
5379 elf_flags_init (obfd) = TRUE;
5380 elf_elfheader (obfd)->e_flags = EF_SH1;
5381 sh_elf_set_mach_from_flags (obfd);
5384 if (! sh_merge_bfd_arch (ibfd, obfd))
5386 _bfd_error_handler ("%B: uses instructions which are incompatible "
5387 "with instructions used in previous modules",
5388 ibfd);
5389 bfd_set_error (bfd_error_bad_value);
5390 return FALSE;
5393 elf_elfheader (obfd)->e_flags =
5394 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5396 return TRUE;
5398 #endif /* not sh_elf_merge_private_data */
5400 /* Override the generic function because we need to store sh_elf_obj_tdata
5401 as the specific tdata. We set also the machine architecture from flags
5402 here. */
5404 static bfd_boolean
5405 sh_elf_object_p (bfd *abfd)
5407 return sh_elf_set_mach_from_flags (abfd);
5410 /* Finish up dynamic symbol handling. We set the contents of various
5411 dynamic sections here. */
5413 static bfd_boolean
5414 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5415 struct elf_link_hash_entry *h,
5416 Elf_Internal_Sym *sym)
5418 struct elf_sh_link_hash_table *htab;
5420 htab = sh_elf_hash_table (info);
5422 if (h->plt.offset != (bfd_vma) -1)
5424 asection *splt;
5425 asection *sgot;
5426 asection *srel;
5428 bfd_vma plt_index;
5429 bfd_vma got_offset;
5430 Elf_Internal_Rela rel;
5431 bfd_byte *loc;
5433 /* This symbol has an entry in the procedure linkage table. Set
5434 it up. */
5436 BFD_ASSERT (h->dynindx != -1);
5438 splt = htab->splt;
5439 sgot = htab->sgotplt;
5440 srel = htab->srelplt;
5441 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
5443 /* Get the index in the procedure linkage table which
5444 corresponds to this symbol. This is the index of this symbol
5445 in all the symbols for which we are making plt entries. The
5446 first entry in the procedure linkage table is reserved. */
5447 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5449 /* Get the offset into the .got table of the entry that
5450 corresponds to this function. Each .got entry is 4 bytes.
5451 The first three are reserved. */
5452 got_offset = (plt_index + 3) * 4;
5454 #ifdef GOT_BIAS
5455 if (info->shared)
5456 got_offset -= GOT_BIAS;
5457 #endif
5459 /* Fill in the entry in the procedure linkage table. */
5460 memcpy (splt->contents + h->plt.offset,
5461 htab->plt_info->symbol_entry,
5462 htab->plt_info->symbol_entry_size);
5464 if (info->shared)
5465 install_plt_field (output_bfd, FALSE, got_offset,
5466 (splt->contents
5467 + h->plt.offset
5468 + htab->plt_info->symbol_fields.got_entry));
5469 else
5471 install_plt_field (output_bfd, FALSE,
5472 (sgot->output_section->vma
5473 + sgot->output_offset
5474 + got_offset),
5475 (splt->contents
5476 + h->plt.offset
5477 + htab->plt_info->symbol_fields.got_entry));
5478 if (htab->vxworks_p)
5480 unsigned int reachable_plts, plts_per_4k;
5481 int distance;
5483 /* Divide the PLT into groups. The first group contains
5484 REACHABLE_PLTS entries and the other groups contain
5485 PLTS_PER_4K entries. Entries in the first group can
5486 branch directly to .plt; those in later groups branch
5487 to the last element of the previous group. */
5488 /* ??? It would be better to create multiple copies of
5489 the common resolver stub. */
5490 reachable_plts = ((4096
5491 - htab->plt_info->plt0_entry_size
5492 - (htab->plt_info->symbol_fields.plt + 4))
5493 / htab->plt_info->symbol_entry_size) + 1;
5494 plts_per_4k = (4096 / htab->plt_info->symbol_entry_size);
5495 if (plt_index < reachable_plts)
5496 distance = -(h->plt.offset
5497 + htab->plt_info->symbol_fields.plt);
5498 else
5499 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
5500 * htab->plt_info->symbol_entry_size);
5502 /* Install the 'bra' with this offset. */
5503 bfd_put_16 (output_bfd,
5504 0xa000 | (0x0fff & ((distance - 4) / 2)),
5505 (splt->contents
5506 + h->plt.offset
5507 + htab->plt_info->symbol_fields.plt));
5509 else
5510 install_plt_field (output_bfd, TRUE,
5511 splt->output_section->vma + splt->output_offset,
5512 (splt->contents
5513 + h->plt.offset
5514 + htab->plt_info->symbol_fields.plt));
5517 #ifdef GOT_BIAS
5518 if (info->shared)
5519 got_offset += GOT_BIAS;
5520 #endif
5522 install_plt_field (output_bfd, FALSE,
5523 plt_index * sizeof (Elf32_External_Rela),
5524 (splt->contents
5525 + h->plt.offset
5526 + htab->plt_info->symbol_fields.reloc_offset));
5528 /* Fill in the entry in the global offset table. */
5529 bfd_put_32 (output_bfd,
5530 (splt->output_section->vma
5531 + splt->output_offset
5532 + h->plt.offset
5533 + htab->plt_info->symbol_resolve_offset),
5534 sgot->contents + got_offset);
5536 /* Fill in the entry in the .rela.plt section. */
5537 rel.r_offset = (sgot->output_section->vma
5538 + sgot->output_offset
5539 + got_offset);
5540 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
5541 rel.r_addend = 0;
5542 #ifdef GOT_BIAS
5543 rel.r_addend = GOT_BIAS;
5544 #endif
5545 loc = srel->contents + plt_index * sizeof (Elf32_External_Rela);
5546 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5548 if (htab->vxworks_p && !info->shared)
5550 /* Create the .rela.plt.unloaded relocations for this PLT entry.
5551 Begin by pointing LOC to the first such relocation. */
5552 loc = (htab->srelplt2->contents
5553 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
5555 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
5556 for the PLT entry's pointer to the .got.plt entry. */
5557 rel.r_offset = (htab->splt->output_section->vma
5558 + htab->splt->output_offset
5559 + h->plt.offset
5560 + htab->plt_info->symbol_fields.got_entry);
5561 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5562 rel.r_addend = got_offset;
5563 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5564 loc += sizeof (Elf32_External_Rela);
5566 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
5567 the .got.plt entry, which initially points to .plt. */
5568 rel.r_offset = (htab->sgotplt->output_section->vma
5569 + htab->sgotplt->output_offset
5570 + got_offset);
5571 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
5572 rel.r_addend = 0;
5573 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5576 if (!h->def_regular)
5578 /* Mark the symbol as undefined, rather than as defined in
5579 the .plt section. Leave the value alone. */
5580 sym->st_shndx = SHN_UNDEF;
5584 if (h->got.offset != (bfd_vma) -1
5585 && sh_elf_hash_entry (h)->tls_type != GOT_TLS_GD
5586 && sh_elf_hash_entry (h)->tls_type != GOT_TLS_IE)
5588 asection *sgot;
5589 asection *srel;
5590 Elf_Internal_Rela rel;
5591 bfd_byte *loc;
5593 /* This symbol has an entry in the global offset table. Set it
5594 up. */
5596 sgot = htab->sgot;
5597 srel = htab->srelgot;
5598 BFD_ASSERT (sgot != NULL && srel != NULL);
5600 rel.r_offset = (sgot->output_section->vma
5601 + sgot->output_offset
5602 + (h->got.offset &~ (bfd_vma) 1));
5604 /* If this is a static link, or it is a -Bsymbolic link and the
5605 symbol is defined locally or was forced to be local because
5606 of a version file, we just want to emit a RELATIVE reloc.
5607 The entry in the global offset table will already have been
5608 initialized in the relocate_section function. */
5609 if (info->shared
5610 && SYMBOL_REFERENCES_LOCAL (info, h))
5612 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5613 rel.r_addend = (h->root.u.def.value
5614 + h->root.u.def.section->output_section->vma
5615 + h->root.u.def.section->output_offset);
5617 else
5619 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5620 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5621 rel.r_addend = 0;
5624 loc = srel->contents;
5625 loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5626 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5629 #ifdef INCLUDE_SHMEDIA
5631 struct elf_sh_link_hash_entry *eh;
5633 eh = (struct elf_sh_link_hash_entry *) h;
5634 if (eh->datalabel_got.offset != (bfd_vma) -1)
5636 asection *sgot;
5637 asection *srel;
5638 Elf_Internal_Rela rel;
5639 bfd_byte *loc;
5641 /* This symbol has a datalabel entry in the global offset table.
5642 Set it up. */
5644 sgot = htab->sgot;
5645 srel = htab->srelgot;
5646 BFD_ASSERT (sgot != NULL && srel != NULL);
5648 rel.r_offset = (sgot->output_section->vma
5649 + sgot->output_offset
5650 + (eh->datalabel_got.offset &~ (bfd_vma) 1));
5652 /* If this is a static link, or it is a -Bsymbolic link and the
5653 symbol is defined locally or was forced to be local because
5654 of a version file, we just want to emit a RELATIVE reloc.
5655 The entry in the global offset table will already have been
5656 initialized in the relocate_section function. */
5657 if (info->shared
5658 && SYMBOL_REFERENCES_LOCAL (info, h))
5660 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5661 rel.r_addend = (h->root.u.def.value
5662 + h->root.u.def.section->output_section->vma
5663 + h->root.u.def.section->output_offset);
5665 else
5667 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents
5668 + eh->datalabel_got.offset);
5669 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5670 rel.r_addend = 0;
5673 loc = srel->contents;
5674 loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5675 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5678 #endif
5680 if (h->needs_copy)
5682 asection *s;
5683 Elf_Internal_Rela rel;
5684 bfd_byte *loc;
5686 /* This symbol needs a copy reloc. Set it up. */
5688 BFD_ASSERT (h->dynindx != -1
5689 && (h->root.type == bfd_link_hash_defined
5690 || h->root.type == bfd_link_hash_defweak));
5692 s = bfd_get_section_by_name (h->root.u.def.section->owner,
5693 ".rela.bss");
5694 BFD_ASSERT (s != NULL);
5696 rel.r_offset = (h->root.u.def.value
5697 + h->root.u.def.section->output_section->vma
5698 + h->root.u.def.section->output_offset);
5699 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
5700 rel.r_addend = 0;
5701 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5702 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5705 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
5706 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
5707 ".got" section. */
5708 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5709 || (!htab->vxworks_p && h == htab->root.hgot))
5710 sym->st_shndx = SHN_ABS;
5712 return TRUE;
5715 /* Finish up the dynamic sections. */
5717 static bfd_boolean
5718 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5720 struct elf_sh_link_hash_table *htab;
5721 asection *sgot;
5722 asection *sdyn;
5724 htab = sh_elf_hash_table (info);
5725 sgot = htab->sgotplt;
5726 sdyn = bfd_get_section_by_name (htab->root.dynobj, ".dynamic");
5728 if (htab->root.dynamic_sections_created)
5730 asection *splt;
5731 Elf32_External_Dyn *dyncon, *dynconend;
5733 BFD_ASSERT (sgot != NULL && sdyn != NULL);
5735 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5736 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5737 for (; dyncon < dynconend; dyncon++)
5739 Elf_Internal_Dyn dyn;
5740 asection *s;
5741 #ifdef INCLUDE_SHMEDIA
5742 const char *name;
5743 #endif
5745 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
5747 switch (dyn.d_tag)
5749 default:
5750 if (htab->vxworks_p
5751 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
5752 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5753 break;
5755 #ifdef INCLUDE_SHMEDIA
5756 case DT_INIT:
5757 name = info->init_function;
5758 goto get_sym;
5760 case DT_FINI:
5761 name = info->fini_function;
5762 get_sym:
5763 if (dyn.d_un.d_val != 0)
5765 struct elf_link_hash_entry *h;
5767 h = elf_link_hash_lookup (&htab->root, name,
5768 FALSE, FALSE, TRUE);
5769 if (h != NULL && (h->other & STO_SH5_ISA32))
5771 dyn.d_un.d_val |= 1;
5772 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5775 break;
5776 #endif
5778 case DT_PLTGOT:
5779 s = htab->sgot->output_section;
5780 goto get_vma;
5782 case DT_JMPREL:
5783 s = htab->srelplt->output_section;
5784 get_vma:
5785 BFD_ASSERT (s != NULL);
5786 dyn.d_un.d_ptr = s->vma;
5787 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5788 break;
5790 case DT_PLTRELSZ:
5791 s = htab->srelplt->output_section;
5792 BFD_ASSERT (s != NULL);
5793 dyn.d_un.d_val = s->size;
5794 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5795 break;
5797 case DT_RELASZ:
5798 /* My reading of the SVR4 ABI indicates that the
5799 procedure linkage table relocs (DT_JMPREL) should be
5800 included in the overall relocs (DT_RELA). This is
5801 what Solaris does. However, UnixWare can not handle
5802 that case. Therefore, we override the DT_RELASZ entry
5803 here to make it not include the JMPREL relocs. Since
5804 the linker script arranges for .rela.plt to follow all
5805 other relocation sections, we don't have to worry
5806 about changing the DT_RELA entry. */
5807 if (htab->srelplt != NULL)
5809 s = htab->srelplt->output_section;
5810 dyn.d_un.d_val -= s->size;
5812 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5813 break;
5817 /* Fill in the first entry in the procedure linkage table. */
5818 splt = htab->splt;
5819 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
5821 unsigned int i;
5823 memcpy (splt->contents,
5824 htab->plt_info->plt0_entry,
5825 htab->plt_info->plt0_entry_size);
5826 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
5827 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
5828 install_plt_field (output_bfd, FALSE,
5829 (sgot->output_section->vma
5830 + sgot->output_offset
5831 + (i * 4)),
5832 (splt->contents
5833 + htab->plt_info->plt0_got_fields[i]));
5835 if (htab->vxworks_p)
5837 /* Finalize the .rela.plt.unloaded contents. */
5838 Elf_Internal_Rela rel;
5839 bfd_byte *loc;
5841 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
5842 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
5843 loc = htab->srelplt2->contents;
5844 rel.r_offset = (splt->output_section->vma
5845 + splt->output_offset
5846 + htab->plt_info->plt0_got_fields[2]);
5847 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5848 rel.r_addend = 8;
5849 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5850 loc += sizeof (Elf32_External_Rela);
5852 /* Fix up the remaining .rela.plt.unloaded relocations.
5853 They may have the wrong symbol index for _G_O_T_ or
5854 _P_L_T_ depending on the order in which symbols were
5855 output. */
5856 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
5858 /* The PLT entry's pointer to the .got.plt slot. */
5859 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5860 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
5861 R_SH_DIR32);
5862 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5863 loc += sizeof (Elf32_External_Rela);
5865 /* The .got.plt slot's pointer to .plt. */
5866 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5867 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
5868 R_SH_DIR32);
5869 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5870 loc += sizeof (Elf32_External_Rela);
5874 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5875 really seem like the right value. */
5876 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5880 /* Fill in the first three entries in the global offset table. */
5881 if (sgot && sgot->size > 0)
5883 if (sdyn == NULL)
5884 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5885 else
5886 bfd_put_32 (output_bfd,
5887 sdyn->output_section->vma + sdyn->output_offset,
5888 sgot->contents);
5889 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5890 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5892 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5895 return TRUE;
5898 static enum elf_reloc_type_class
5899 sh_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5901 switch ((int) ELF32_R_TYPE (rela->r_info))
5903 case R_SH_RELATIVE:
5904 return reloc_class_relative;
5905 case R_SH_JMP_SLOT:
5906 return reloc_class_plt;
5907 case R_SH_COPY:
5908 return reloc_class_copy;
5909 default:
5910 return reloc_class_normal;
5914 #if !defined SH_TARGET_ALREADY_DEFINED
5915 /* Support for Linux core dump NOTE sections. */
5917 static bfd_boolean
5918 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5920 int offset;
5921 unsigned int size;
5923 switch (note->descsz)
5925 default:
5926 return FALSE;
5928 case 168: /* Linux/SH */
5929 /* pr_cursig */
5930 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5932 /* pr_pid */
5933 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5935 /* pr_reg */
5936 offset = 72;
5937 size = 92;
5939 break;
5942 /* Make a ".reg/999" section. */
5943 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5944 size, note->descpos + offset);
5947 static bfd_boolean
5948 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5950 switch (note->descsz)
5952 default:
5953 return FALSE;
5955 case 124: /* Linux/SH elf_prpsinfo */
5956 elf_tdata (abfd)->core_program
5957 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
5958 elf_tdata (abfd)->core_command
5959 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
5962 /* Note that for some reason, a spurious space is tacked
5963 onto the end of the args in some (at least one anyway)
5964 implementations, so strip it off if it exists. */
5967 char *command = elf_tdata (abfd)->core_command;
5968 int n = strlen (command);
5970 if (0 < n && command[n - 1] == ' ')
5971 command[n - 1] = '\0';
5974 return TRUE;
5976 #endif /* not SH_TARGET_ALREADY_DEFINED */
5979 /* Return address for Ith PLT stub in section PLT, for relocation REL
5980 or (bfd_vma) -1 if it should not be included. */
5982 static bfd_vma
5983 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
5984 const arelent *rel ATTRIBUTE_UNUSED)
5986 const struct elf_sh_plt_info *plt_info;
5988 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
5989 return plt->vma + get_plt_offset (plt_info, i);
5992 #if !defined SH_TARGET_ALREADY_DEFINED
5993 #define TARGET_BIG_SYM bfd_elf32_sh_vec
5994 #define TARGET_BIG_NAME "elf32-sh"
5995 #define TARGET_LITTLE_SYM bfd_elf32_shl_vec
5996 #define TARGET_LITTLE_NAME "elf32-shl"
5997 #endif
5999 #define ELF_ARCH bfd_arch_sh
6000 #define ELF_MACHINE_CODE EM_SH
6001 #ifdef __QNXTARGET__
6002 #define ELF_MAXPAGESIZE 0x1000
6003 #else
6004 #define ELF_MAXPAGESIZE 0x80
6005 #endif
6007 #define elf_symbol_leading_char '_'
6009 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6010 #define bfd_elf32_bfd_reloc_name_lookup \
6011 sh_elf_reloc_name_lookup
6012 #define elf_info_to_howto sh_elf_info_to_howto
6013 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6014 #define elf_backend_relocate_section sh_elf_relocate_section
6015 #define bfd_elf32_bfd_get_relocated_section_contents \
6016 sh_elf_get_relocated_section_contents
6017 #define bfd_elf32_mkobject sh_elf_mkobject
6018 #define elf_backend_object_p sh_elf_object_p
6019 #define bfd_elf32_bfd_set_private_bfd_flags \
6020 sh_elf_set_private_flags
6021 #define bfd_elf32_bfd_copy_private_bfd_data \
6022 sh_elf_copy_private_data
6023 #define bfd_elf32_bfd_merge_private_bfd_data \
6024 sh_elf_merge_private_data
6026 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6027 #define elf_backend_gc_sweep_hook sh_elf_gc_sweep_hook
6028 #define elf_backend_check_relocs sh_elf_check_relocs
6029 #define elf_backend_copy_indirect_symbol \
6030 sh_elf_copy_indirect_symbol
6031 #define elf_backend_create_dynamic_sections \
6032 sh_elf_create_dynamic_sections
6033 #define bfd_elf32_bfd_link_hash_table_create \
6034 sh_elf_link_hash_table_create
6035 #define elf_backend_adjust_dynamic_symbol \
6036 sh_elf_adjust_dynamic_symbol
6037 #define elf_backend_always_size_sections \
6038 sh_elf_always_size_sections
6039 #define elf_backend_size_dynamic_sections \
6040 sh_elf_size_dynamic_sections
6041 #define elf_backend_omit_section_dynsym \
6042 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
6043 #define elf_backend_finish_dynamic_symbol \
6044 sh_elf_finish_dynamic_symbol
6045 #define elf_backend_finish_dynamic_sections \
6046 sh_elf_finish_dynamic_sections
6047 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6048 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6050 #define elf_backend_can_gc_sections 1
6051 #define elf_backend_can_refcount 1
6052 #define elf_backend_want_got_plt 1
6053 #define elf_backend_plt_readonly 1
6054 #define elf_backend_want_plt_sym 0
6055 #define elf_backend_got_header_size 12
6057 #if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
6059 #include "elf32-target.h"
6061 /* NetBSD support. */
6062 #undef TARGET_BIG_SYM
6063 #define TARGET_BIG_SYM bfd_elf32_shnbsd_vec
6064 #undef TARGET_BIG_NAME
6065 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6066 #undef TARGET_LITTLE_SYM
6067 #define TARGET_LITTLE_SYM bfd_elf32_shlnbsd_vec
6068 #undef TARGET_LITTLE_NAME
6069 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6070 #undef ELF_MAXPAGESIZE
6071 #define ELF_MAXPAGESIZE 0x10000
6072 #undef ELF_COMMONPAGESIZE
6073 #undef elf_symbol_leading_char
6074 #define elf_symbol_leading_char 0
6075 #undef elf32_bed
6076 #define elf32_bed elf32_sh_nbsd_bed
6078 #include "elf32-target.h"
6081 /* Linux support. */
6082 #undef TARGET_BIG_SYM
6083 #define TARGET_BIG_SYM bfd_elf32_shblin_vec
6084 #undef TARGET_BIG_NAME
6085 #define TARGET_BIG_NAME "elf32-shbig-linux"
6086 #undef TARGET_LITTLE_SYM
6087 #define TARGET_LITTLE_SYM bfd_elf32_shlin_vec
6088 #undef TARGET_LITTLE_NAME
6089 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6090 #undef ELF_COMMONPAGESIZE
6091 #define ELF_COMMONPAGESIZE 0x1000
6093 #undef elf_backend_grok_prstatus
6094 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6095 #undef elf_backend_grok_psinfo
6096 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6097 #undef elf32_bed
6098 #define elf32_bed elf32_sh_lin_bed
6100 #include "elf32-target.h"
6102 #undef TARGET_BIG_SYM
6103 #define TARGET_BIG_SYM bfd_elf32_shvxworks_vec
6104 #undef TARGET_BIG_NAME
6105 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6106 #undef TARGET_LITTLE_SYM
6107 #define TARGET_LITTLE_SYM bfd_elf32_shlvxworks_vec
6108 #undef TARGET_LITTLE_NAME
6109 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6110 #undef elf32_bed
6111 #define elf32_bed elf32_sh_vxworks_bed
6113 #undef elf_backend_want_plt_sym
6114 #define elf_backend_want_plt_sym 1
6115 #undef elf_symbol_leading_char
6116 #define elf_symbol_leading_char '_'
6117 #define elf_backend_want_got_underscore 1
6118 #undef elf_backend_grok_prstatus
6119 #undef elf_backend_grok_psinfo
6120 #undef elf_backend_add_symbol_hook
6121 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6122 #undef elf_backend_link_output_symbol_hook
6123 #define elf_backend_link_output_symbol_hook \
6124 elf_vxworks_link_output_symbol_hook
6125 #undef elf_backend_emit_relocs
6126 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6127 #undef elf_backend_final_write_processing
6128 #define elf_backend_final_write_processing \
6129 elf_vxworks_final_write_processing
6130 #undef ELF_MAXPAGESIZE
6131 #define ELF_MAXPAGESIZE 0x1000
6132 #undef ELF_COMMONPAGESIZE
6134 #include "elf32-target.h"
6136 #endif /* neither INCLUDE_SHMEDIA nor SH_TARGET_ALREADY_DEFINED */