1 /* Xstormy16-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "elf/xstormy16.h"
27 #include "libiberty.h"
29 /* Handle the R_XSTORMY16_24 reloc, which has an odd bit arrangement. */
31 static bfd_reloc_status_type
32 xstormy16_elf_24_reloc (bfd *abfd,
36 asection *input_section,
38 char **error_message ATTRIBUTE_UNUSED)
40 bfd_vma relocation, x;
42 if (output_bfd != NULL)
44 reloc_entry->address += input_section->output_offset;
48 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
49 return bfd_reloc_outofrange;
51 if (bfd_is_com_section (symbol->section))
54 relocation = symbol->value;
56 relocation += symbol->section->output_section->vma;
57 relocation += symbol->section->output_offset;
58 relocation += reloc_entry->addend;
60 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
62 x |= relocation & 0xff;
63 x |= (relocation << 8) & 0xffff0000;
64 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
66 if (relocation & ~ (bfd_vma) 0xffffff)
67 return bfd_reloc_overflow;
72 static reloc_howto_type xstormy16_elf_howto_table [] =
74 /* This reloc does nothing. */
75 HOWTO (R_XSTORMY16_NONE, /* type */
77 2, /* size (0 = byte, 1 = short, 2 = long) */
79 FALSE, /* pc_relative */
81 complain_overflow_bitfield, /* complain_on_overflow */
82 bfd_elf_generic_reloc, /* special_function */
83 "R_XSTORMY16_NONE", /* name */
84 FALSE, /* partial_inplace */
87 FALSE), /* pcrel_offset */
89 /* A 32 bit absolute relocation. */
90 HOWTO (R_XSTORMY16_32, /* type */
92 2, /* size (0 = byte, 1 = short, 2 = long) */
94 FALSE, /* pc_relative */
96 complain_overflow_dont, /* complain_on_overflow */
97 bfd_elf_generic_reloc, /* special_function */
98 "R_XSTORMY16_32", /* name */
99 FALSE, /* partial_inplace */
101 0xffffffff, /* dst_mask */
102 FALSE), /* pcrel_offset */
104 /* A 16 bit absolute relocation. */
105 HOWTO (R_XSTORMY16_16, /* type */
107 1, /* size (0 = byte, 1 = short, 2 = long) */
109 FALSE, /* pc_relative */
111 complain_overflow_bitfield, /* complain_on_overflow */
112 bfd_elf_generic_reloc, /* special_function */
113 "R_XSTORMY16_16", /* name */
114 FALSE, /* partial_inplace */
116 0xffff, /* dst_mask */
117 FALSE), /* pcrel_offset */
119 /* An 8 bit absolute relocation. */
120 HOWTO (R_XSTORMY16_8, /* type */
122 0, /* size (0 = byte, 1 = short, 2 = long) */
124 FALSE, /* pc_relative */
126 complain_overflow_unsigned, /* complain_on_overflow */
127 bfd_elf_generic_reloc, /* special_function */
128 "R_XSTORMY16_8", /* name */
129 FALSE, /* partial_inplace */
132 FALSE), /* pcrel_offset */
134 /* A 32 bit pc-relative relocation. */
135 HOWTO (R_XSTORMY16_PC32, /* type */
137 2, /* size (0 = byte, 1 = short, 2 = long) */
139 TRUE, /* pc_relative */
141 complain_overflow_dont, /* complain_on_overflow */
142 bfd_elf_generic_reloc, /* special_function */
143 "R_XSTORMY16_PC32", /* name */
144 FALSE, /* partial_inplace */
146 0xffffffff, /* dst_mask */
147 TRUE), /* pcrel_offset */
149 /* A 16 bit pc-relative relocation. */
150 HOWTO (R_XSTORMY16_PC16, /* type */
152 1, /* size (0 = byte, 1 = short, 2 = long) */
154 TRUE, /* pc_relative */
156 complain_overflow_signed, /* complain_on_overflow */
157 bfd_elf_generic_reloc, /* special_function */
158 "R_XSTORMY16_PC16", /* name */
159 FALSE, /* partial_inplace */
161 0xffffffff, /* dst_mask */
162 TRUE), /* pcrel_offset */
164 /* An 8 bit pc-relative relocation. */
165 HOWTO (R_XSTORMY16_PC8, /* type */
167 0, /* size (0 = byte, 1 = short, 2 = long) */
169 TRUE, /* pc_relative */
171 complain_overflow_signed, /* complain_on_overflow */
172 bfd_elf_generic_reloc, /* special_function */
173 "R_XSTORMY16_PC8", /* name */
174 FALSE, /* partial_inplace */
176 0xffffffff, /* dst_mask */
177 TRUE), /* pcrel_offset */
179 /* A 12-bit pc-relative relocation suitable for the branch instructions. */
180 HOWTO (R_XSTORMY16_REL_12, /* type */
182 1, /* size (0 = byte, 1 = short, 2 = long) */
184 TRUE, /* pc_relative */
186 complain_overflow_signed, /* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_XSTORMY16_REL_12", /* name */
189 FALSE, /* partial_inplace */
191 0x0ffe, /* dst_mask */
192 TRUE), /* pcrel_offset */
194 /* A 24-bit absolute relocation suitable for the jump instructions. */
195 HOWTO (R_XSTORMY16_24, /* type */
197 2, /* size (0 = byte, 1 = short, 2 = long) */
199 FALSE, /* pc_relative */
201 complain_overflow_unsigned, /* complain_on_overflow */
202 xstormy16_elf_24_reloc, /* special_function */
203 "R_XSTORMY16_24", /* name */
204 TRUE, /* partial_inplace */
206 0xffff00ff, /* dst_mask */
207 TRUE), /* pcrel_offset */
209 /* A 16 bit absolute relocation to a function pointer. */
210 HOWTO (R_XSTORMY16_FPTR16, /* type */
212 1, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE, /* pc_relative */
216 complain_overflow_bitfield, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_XSTORMY16_FPTR16", /* name */
219 FALSE, /* partial_inplace */
221 0xffffffff, /* dst_mask */
222 FALSE), /* pcrel_offset */
224 /* Low order 16 bit value of a high memory address. */
225 HOWTO (R_XSTORMY16_LO16, /* type */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
229 FALSE, /* pc_relative */
231 complain_overflow_dont, /* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_XSTORMY16_LO16", /* name */
234 FALSE, /* partial_inplace */
236 0xffff, /* dst_mask */
237 FALSE), /* pcrel_offset */
239 /* High order 16 bit value of a high memory address. */
240 HOWTO (R_XSTORMY16_HI16, /* type */
242 1, /* size (0 = byte, 1 = short, 2 = long) */
244 FALSE, /* pc_relative */
246 complain_overflow_dont, /* complain_on_overflow */
247 bfd_elf_generic_reloc, /* special_function */
248 "R_XSTORMY16_HI16", /* name */
249 FALSE, /* partial_inplace */
251 0xffff, /* dst_mask */
252 FALSE), /* pcrel_offset */
254 /* A 12 bit absolute relocation. */
255 HOWTO (R_XSTORMY16_12, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE, /* pc_relative */
261 complain_overflow_signed, /* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_XSTORMY16_12", /* name */
264 FALSE, /* partial_inplace */
265 0x0000, /* src_mask */
266 0x0fff, /* dst_mask */
267 FALSE), /* pcrel_offset */
270 static reloc_howto_type xstormy16_elf_howto_table2 [] =
272 /* GNU extension to record C++ vtable hierarchy */
273 HOWTO (R_XSTORMY16_GNU_VTINHERIT, /* type */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_dont, /* complain_on_overflow */
280 NULL, /* special_function */
281 "R_XSTORMY16_GNU_VTINHERIT", /* name */
282 FALSE, /* partial_inplace */
285 FALSE), /* pcrel_offset */
287 /* GNU extension to record C++ vtable member usage */
288 HOWTO (R_XSTORMY16_GNU_VTENTRY, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE, /* pc_relative */
294 complain_overflow_dont, /* complain_on_overflow */
295 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
296 "R_XSTORMY16_GNU_VTENTRY", /* name */
297 FALSE, /* partial_inplace */
300 FALSE), /* pcrel_offset */
304 /* Map BFD reloc types to XSTORMY16 ELF reloc types. */
306 typedef struct xstormy16_reloc_map
308 bfd_reloc_code_real_type bfd_reloc_val;
309 unsigned int xstormy16_reloc_val;
310 reloc_howto_type * table;
313 static const reloc_map xstormy16_reloc_map [] =
315 { BFD_RELOC_NONE, R_XSTORMY16_NONE, xstormy16_elf_howto_table },
316 { BFD_RELOC_32, R_XSTORMY16_32, xstormy16_elf_howto_table },
317 { BFD_RELOC_16, R_XSTORMY16_16, xstormy16_elf_howto_table },
318 { BFD_RELOC_8, R_XSTORMY16_8, xstormy16_elf_howto_table },
319 { BFD_RELOC_32_PCREL, R_XSTORMY16_PC32, xstormy16_elf_howto_table },
320 { BFD_RELOC_16_PCREL, R_XSTORMY16_PC16, xstormy16_elf_howto_table },
321 { BFD_RELOC_8_PCREL, R_XSTORMY16_PC8, xstormy16_elf_howto_table },
322 { BFD_RELOC_XSTORMY16_REL_12, R_XSTORMY16_REL_12, xstormy16_elf_howto_table },
323 { BFD_RELOC_XSTORMY16_24, R_XSTORMY16_24, xstormy16_elf_howto_table },
324 { BFD_RELOC_XSTORMY16_FPTR16, R_XSTORMY16_FPTR16, xstormy16_elf_howto_table },
325 { BFD_RELOC_LO16, R_XSTORMY16_LO16, xstormy16_elf_howto_table },
326 { BFD_RELOC_HI16, R_XSTORMY16_HI16, xstormy16_elf_howto_table },
327 { BFD_RELOC_XSTORMY16_12, R_XSTORMY16_12, xstormy16_elf_howto_table },
328 { BFD_RELOC_VTABLE_INHERIT, R_XSTORMY16_GNU_VTINHERIT, xstormy16_elf_howto_table2 },
329 { BFD_RELOC_VTABLE_ENTRY, R_XSTORMY16_GNU_VTENTRY, xstormy16_elf_howto_table2 },
332 static reloc_howto_type *
333 xstormy16_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
334 bfd_reloc_code_real_type code)
338 for (i = ARRAY_SIZE (xstormy16_reloc_map); --i;)
340 const reloc_map * entry;
342 entry = xstormy16_reloc_map + i;
344 if (entry->bfd_reloc_val == code)
345 return entry->table + (entry->xstormy16_reloc_val
346 - entry->table[0].type);
352 static reloc_howto_type *
353 xstormy16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
359 i < (sizeof (xstormy16_elf_howto_table)
360 / sizeof (xstormy16_elf_howto_table[0]));
362 if (xstormy16_elf_howto_table[i].name != NULL
363 && strcasecmp (xstormy16_elf_howto_table[i].name, r_name) == 0)
364 return &xstormy16_elf_howto_table[i];
367 i < (sizeof (xstormy16_elf_howto_table2)
368 / sizeof (xstormy16_elf_howto_table2[0]));
370 if (xstormy16_elf_howto_table2[i].name != NULL
371 && strcasecmp (xstormy16_elf_howto_table2[i].name, r_name) == 0)
372 return &xstormy16_elf_howto_table2[i];
377 /* Set the howto pointer for an XSTORMY16 ELF reloc. */
380 xstormy16_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
382 Elf_Internal_Rela * dst)
384 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
386 if (r_type <= (unsigned int) R_XSTORMY16_12)
387 cache_ptr->howto = &xstormy16_elf_howto_table [r_type];
388 else if (r_type - R_XSTORMY16_GNU_VTINHERIT
389 <= (unsigned int) R_XSTORMY16_GNU_VTENTRY)
391 = &xstormy16_elf_howto_table2 [r_type - R_XSTORMY16_GNU_VTINHERIT];
396 /* We support 16-bit pointers to code above 64k by generating a thunk
397 below 64k containing a JMPF instruction to the final address. We
398 cannot, unfortunately, minimize the number of thunks unless the
399 -relax switch is given, as otherwise we have no idea where the
400 sections will fall in the address space. */
403 xstormy16_elf_check_relocs (bfd *abfd,
404 struct bfd_link_info *info,
406 const Elf_Internal_Rela *relocs)
408 const Elf_Internal_Rela *rel, *relend;
409 struct elf_link_hash_entry **sym_hashes;
410 Elf_Internal_Shdr *symtab_hdr;
411 bfd_vma *local_plt_offsets;
415 if (info->relocatable)
418 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
419 sym_hashes = elf_sym_hashes (abfd);
420 local_plt_offsets = elf_local_got_offsets (abfd);
422 dynobj = elf_hash_table(info)->dynobj;
424 relend = relocs + sec->reloc_count;
425 for (rel = relocs; rel < relend; ++rel)
427 unsigned long r_symndx;
428 struct elf_link_hash_entry *h;
431 r_symndx = ELF32_R_SYM (rel->r_info);
432 if (r_symndx < symtab_hdr->sh_info)
436 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
437 while (h->root.type == bfd_link_hash_indirect
438 || h->root.type == bfd_link_hash_warning)
439 h = (struct elf_link_hash_entry *) h->root.u.i.link;
442 switch (ELF32_R_TYPE (rel->r_info))
444 /* This relocation describes a 16-bit pointer to a function.
445 We may need to allocate a thunk in low memory; reserve memory
447 case R_XSTORMY16_FPTR16:
448 if (rel->r_addend != 0)
450 (*info->callbacks->warning)
451 (info, _("non-zero addend in @fptr reloc"), 0,
456 elf_hash_table (info)->dynobj = dynobj = abfd;
459 splt = bfd_get_section_by_name (dynobj, ".plt");
462 splt = bfd_make_section_with_flags (dynobj, ".plt",
472 || ! bfd_set_section_alignment (dynobj, splt, 1))
478 offset = &h->plt.offset;
481 if (local_plt_offsets == NULL)
486 size = symtab_hdr->sh_info * sizeof (bfd_vma);
487 local_plt_offsets = bfd_alloc (abfd, size);
488 if (local_plt_offsets == NULL)
490 elf_local_got_offsets (abfd) = local_plt_offsets;
492 for (i = 0; i < symtab_hdr->sh_info; i++)
493 local_plt_offsets[i] = (bfd_vma) -1;
495 offset = &local_plt_offsets[r_symndx];
498 if (*offset == (bfd_vma) -1)
500 *offset = splt->size;
505 /* This relocation describes the C++ object vtable hierarchy.
506 Reconstruct it for later use during GC. */
507 case R_XSTORMY16_GNU_VTINHERIT:
508 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
512 /* This relocation describes which C++ vtable entries are actually
513 used. Record for later use during GC. */
514 case R_XSTORMY16_GNU_VTENTRY:
515 BFD_ASSERT (h != NULL);
517 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
526 /* A subroutine of xstormy16_elf_relax_section. If the global symbol H
527 is within the low 64k, remove any entry for it in the plt. */
529 struct relax_plt_data
536 xstormy16_relax_plt_check (struct elf_link_hash_entry *h, void * xdata)
538 struct relax_plt_data *data = (struct relax_plt_data *) xdata;
540 if (h->root.type == bfd_link_hash_warning)
541 h = (struct elf_link_hash_entry *) h->root.u.i.link;
543 if (h->plt.offset != (bfd_vma) -1)
547 if (h->root.type == bfd_link_hash_undefined
548 || h->root.type == bfd_link_hash_undefweak)
551 address = (h->root.u.def.section->output_section->vma
552 + h->root.u.def.section->output_offset
553 + h->root.u.def.value);
555 if (address <= 0xffff)
558 data->splt->size -= 4;
566 /* A subroutine of xstormy16_elf_relax_section. If the global symbol H
567 previously had a plt entry, give it a new entry offset. */
570 xstormy16_relax_plt_realloc (struct elf_link_hash_entry *h, void * xdata)
572 bfd_vma *entry = (bfd_vma *) xdata;
574 if (h->root.type == bfd_link_hash_warning)
575 h = (struct elf_link_hash_entry *) h->root.u.i.link;
577 if (h->plt.offset != (bfd_vma) -1)
579 h->plt.offset = *entry;
587 xstormy16_elf_relax_section (bfd *dynobj,
589 struct bfd_link_info *info,
592 struct relax_plt_data relax_plt_data;
595 /* Assume nothing changes. */
598 if (info->relocatable)
601 /* We only relax the .plt section at the moment. */
602 if (dynobj != elf_hash_table (info)->dynobj
603 || strcmp (splt->name, ".plt") != 0)
606 /* Quick check for an empty plt. */
610 /* Map across all global symbols; see which ones happen to
611 fall in the low 64k. */
612 relax_plt_data.splt = splt;
613 relax_plt_data.again = again;
614 elf_link_hash_traverse (elf_hash_table (info), xstormy16_relax_plt_check,
617 /* Likewise for local symbols, though that's somewhat less convenient
618 as we have to walk the list of input bfds and swap in symbol data. */
619 for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
621 bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
622 Elf_Internal_Shdr *symtab_hdr;
623 Elf_Internal_Sym *isymbuf = NULL;
626 if (! local_plt_offsets)
629 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
630 if (symtab_hdr->sh_info != 0)
632 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
634 isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
635 symtab_hdr->sh_info, 0,
641 for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
643 Elf_Internal_Sym *isym;
647 if (local_plt_offsets[idx] == (bfd_vma) -1)
650 isym = &isymbuf[idx];
651 if (isym->st_shndx == SHN_UNDEF)
653 else if (isym->st_shndx == SHN_ABS)
654 tsec = bfd_abs_section_ptr;
655 else if (isym->st_shndx == SHN_COMMON)
656 tsec = bfd_com_section_ptr;
658 tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx);
660 address = (tsec->output_section->vma
661 + tsec->output_offset
663 if (address <= 0xffff)
665 local_plt_offsets[idx] = -1;
672 && symtab_hdr->contents != (unsigned char *) isymbuf)
674 if (! info->keep_memory)
678 /* Cache the symbols for elf_link_input_bfd. */
679 symtab_hdr->contents = (unsigned char *) isymbuf;
684 /* If we changed anything, walk the symbols again to reallocate
685 .plt entry addresses. */
686 if (*again && splt->size > 0)
690 elf_link_hash_traverse (elf_hash_table (info),
691 xstormy16_relax_plt_realloc, &entry);
693 for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
695 bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
696 unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info;
699 if (! local_plt_offsets)
702 for (idx = 0; idx < nlocals; ++idx)
703 if (local_plt_offsets[idx] != (bfd_vma) -1)
705 local_plt_offsets[idx] = entry;
715 xstormy16_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
716 struct bfd_link_info *info)
721 if (info->relocatable)
724 dynobj = elf_hash_table (info)->dynobj;
728 splt = bfd_get_section_by_name (dynobj, ".plt");
729 BFD_ASSERT (splt != NULL);
731 splt->contents = bfd_zalloc (dynobj, splt->size);
732 if (splt->contents == NULL)
738 /* Relocate an XSTORMY16 ELF section.
740 The RELOCATE_SECTION function is called by the new ELF backend linker
741 to handle the relocations for a section.
743 The relocs are always passed as Rela structures; if the section
744 actually uses Rel structures, the r_addend field will always be
747 This function is responsible for adjusting the section contents as
748 necessary, and (if using Rela relocs and generating a relocatable
749 output file) adjusting the reloc addend as necessary.
751 This function does not have to worry about setting the reloc
752 address or the reloc symbol index.
754 LOCAL_SYMS is a pointer to the swapped in local symbols.
756 LOCAL_SECTIONS is an array giving the section in the input file
757 corresponding to the st_shndx field of each local symbol.
759 The global hash table entry for the global symbols can be found
760 via elf_sym_hashes (input_bfd).
762 When generating relocatable output, this function must handle
763 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
764 going to be the section symbol corresponding to the output
765 section, which means that the addend must be adjusted
769 xstormy16_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
770 struct bfd_link_info * info,
772 asection * input_section,
774 Elf_Internal_Rela * relocs,
775 Elf_Internal_Sym * local_syms,
776 asection ** local_sections)
778 Elf_Internal_Shdr * symtab_hdr;
779 struct elf_link_hash_entry ** sym_hashes;
780 Elf_Internal_Rela * rel;
781 Elf_Internal_Rela * relend;
785 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
786 sym_hashes = elf_sym_hashes (input_bfd);
787 relend = relocs + input_section->reloc_count;
789 dynobj = elf_hash_table (info)->dynobj;
792 splt = bfd_get_section_by_name (dynobj, ".plt");
794 for (rel = relocs; rel < relend; rel ++)
796 reloc_howto_type * howto;
797 unsigned long r_symndx;
798 Elf_Internal_Sym * sym;
800 struct elf_link_hash_entry * h;
802 bfd_reloc_status_type r;
803 const char * name = NULL;
806 r_type = ELF32_R_TYPE (rel->r_info);
808 if ( r_type == R_XSTORMY16_GNU_VTINHERIT
809 || r_type == R_XSTORMY16_GNU_VTENTRY)
812 r_symndx = ELF32_R_SYM (rel->r_info);
813 howto = xstormy16_elf_howto_table + ELF32_R_TYPE (rel->r_info);
818 if (r_symndx < symtab_hdr->sh_info)
820 sym = local_syms + r_symndx;
821 sec = local_sections [r_symndx];
822 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
826 bfd_boolean unresolved_reloc, warned;
828 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
829 r_symndx, symtab_hdr, sym_hashes,
831 unresolved_reloc, warned);
834 if (sec != NULL && elf_discarded_section (sec))
836 /* For relocs against symbols from removed linkonce sections,
837 or sections discarded by a linker script, we just want the
838 section contents zeroed. Avoid any special processing. */
839 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
845 if (info->relocatable)
849 name = h->root.root.string;
852 name = (bfd_elf_string_from_elf_section
853 (input_bfd, symtab_hdr->sh_link, sym->st_name));
854 if (name == NULL || *name == '\0')
855 name = bfd_section_name (input_bfd, sec);
858 switch (ELF32_R_TYPE (rel->r_info))
862 bfd_vma reloc = relocation + rel->r_addend;
865 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
868 x |= (reloc << 8) & 0xffff0000;
869 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
871 if (reloc & ~0xffffff)
872 r = bfd_reloc_overflow;
878 case R_XSTORMY16_FPTR16:
883 plt_offset = &h->plt.offset;
885 plt_offset = elf_local_got_offsets (input_bfd) + r_symndx;
887 if (relocation <= 0xffff)
889 /* If the symbol is in range for a 16-bit address, we should
890 have deallocated the plt entry in relax_section. */
891 BFD_ASSERT (*plt_offset == (bfd_vma) -1);
895 /* If the symbol is out of range for a 16-bit address,
896 we must have allocated a plt entry. */
897 BFD_ASSERT (*plt_offset != (bfd_vma) -1);
899 /* If this is the first time we've processed this symbol,
900 fill in the plt entry with the correct symbol address. */
901 if ((*plt_offset & 1) == 0)
905 x = 0x00000200; /* jmpf */
906 x |= relocation & 0xff;
907 x |= (relocation << 8) & 0xffff0000;
908 bfd_put_32 (input_bfd, x, splt->contents + *plt_offset);
912 relocation = (splt->output_section->vma
913 + splt->output_offset
914 + (*plt_offset & -2));
916 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
917 contents, rel->r_offset,
923 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
924 contents, rel->r_offset,
925 relocation, rel->r_addend);
929 if (r != bfd_reloc_ok)
931 const char * msg = NULL;
935 case bfd_reloc_overflow:
936 r = info->callbacks->reloc_overflow
937 (info, (h ? &h->root : NULL), name, howto->name,
938 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
941 case bfd_reloc_undefined:
942 r = info->callbacks->undefined_symbol
943 (info, name, input_bfd, input_section, rel->r_offset,
947 case bfd_reloc_outofrange:
948 msg = _("internal error: out of range error");
951 case bfd_reloc_notsupported:
952 msg = _("internal error: unsupported relocation error");
955 case bfd_reloc_dangerous:
956 msg = _("internal error: dangerous relocation");
960 msg = _("internal error: unknown error");
965 r = info->callbacks->warning
966 (info, msg, name, input_bfd, input_section, rel->r_offset);
976 /* This must exist if dynobj is ever set. */
979 xstormy16_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
980 struct bfd_link_info *info)
985 /* As an extra sanity check, verify that all plt entries have
988 if ((dynobj = elf_hash_table (info)->dynobj) != NULL
989 && (splt = bfd_get_section_by_name (dynobj, ".plt")) != NULL)
991 bfd_byte *contents = splt->contents;
992 unsigned int i, size = splt->size;
994 for (i = 0; i < size; i += 4)
996 unsigned int x = bfd_get_32 (dynobj, contents + i);
1005 /* Return the section that should be marked against GC for a given
1009 xstormy16_elf_gc_mark_hook (asection *sec,
1010 struct bfd_link_info *info,
1011 Elf_Internal_Rela *rel,
1012 struct elf_link_hash_entry *h,
1013 Elf_Internal_Sym *sym)
1016 switch (ELF32_R_TYPE (rel->r_info))
1018 case R_XSTORMY16_GNU_VTINHERIT:
1019 case R_XSTORMY16_GNU_VTENTRY:
1023 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1026 #define ELF_ARCH bfd_arch_xstormy16
1027 #define ELF_MACHINE_CODE EM_XSTORMY16
1028 #define ELF_MAXPAGESIZE 0x100
1030 #define TARGET_LITTLE_SYM bfd_elf32_xstormy16_vec
1031 #define TARGET_LITTLE_NAME "elf32-xstormy16"
1033 #define elf_info_to_howto_rel NULL
1034 #define elf_info_to_howto xstormy16_info_to_howto_rela
1035 #define elf_backend_relocate_section xstormy16_elf_relocate_section
1036 #define elf_backend_gc_mark_hook xstormy16_elf_gc_mark_hook
1037 #define elf_backend_check_relocs xstormy16_elf_check_relocs
1038 #define elf_backend_always_size_sections \
1039 xstormy16_elf_always_size_sections
1040 #define elf_backend_omit_section_dynsym \
1041 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
1042 #define elf_backend_finish_dynamic_sections \
1043 xstormy16_elf_finish_dynamic_sections
1045 #define elf_backend_can_gc_sections 1
1046 #define elf_backend_rela_normal 1
1048 #define bfd_elf32_bfd_reloc_type_lookup xstormy16_reloc_type_lookup
1049 #define bfd_elf32_bfd_reloc_name_lookup \
1050 xstormy16_reloc_name_lookup
1051 #define bfd_elf32_bfd_relax_section xstormy16_elf_relax_section
1053 #include "elf32-target.h"