1 /* Xstormy16-specific support for 32-bit ELF.
2 Copyright (C) 2000-2018 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
25 #include "elf/xstormy16.h"
26 #include "libiberty.h"
28 /* Handle the R_XSTORMY16_24 reloc, which has an odd bit arrangement. */
30 static bfd_reloc_status_type
31 xstormy16_elf_24_reloc (bfd *abfd,
35 asection *input_section,
37 char **error_message ATTRIBUTE_UNUSED)
39 bfd_vma relocation, x;
41 if (output_bfd != NULL)
43 reloc_entry->address += input_section->output_offset;
47 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
48 return bfd_reloc_outofrange;
50 if (bfd_is_com_section (symbol->section))
53 relocation = symbol->value;
55 relocation += symbol->section->output_section->vma;
56 relocation += symbol->section->output_offset;
57 relocation += reloc_entry->addend;
59 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
61 x |= relocation & 0xff;
62 x |= (relocation << 8) & 0xffff0000;
63 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
65 if (relocation & ~ (bfd_vma) 0xffffff)
66 return bfd_reloc_overflow;
71 static reloc_howto_type xstormy16_elf_howto_table [] =
73 /* This reloc does nothing. */
74 HOWTO (R_XSTORMY16_NONE, /* type */
76 3, /* size (0 = byte, 1 = short, 2 = long) */
78 FALSE, /* pc_relative */
80 complain_overflow_dont, /* complain_on_overflow */
81 bfd_elf_generic_reloc, /* special_function */
82 "R_XSTORMY16_NONE", /* name */
83 FALSE, /* partial_inplace */
86 FALSE), /* pcrel_offset */
88 /* A 32 bit absolute relocation. */
89 HOWTO (R_XSTORMY16_32, /* type */
91 2, /* size (0 = byte, 1 = short, 2 = long) */
93 FALSE, /* pc_relative */
95 complain_overflow_dont, /* complain_on_overflow */
96 bfd_elf_generic_reloc, /* special_function */
97 "R_XSTORMY16_32", /* name */
98 FALSE, /* partial_inplace */
100 0xffffffff, /* dst_mask */
101 FALSE), /* pcrel_offset */
103 /* A 16 bit absolute relocation. */
104 HOWTO (R_XSTORMY16_16, /* type */
106 1, /* size (0 = byte, 1 = short, 2 = long) */
108 FALSE, /* pc_relative */
110 complain_overflow_bitfield, /* complain_on_overflow */
111 bfd_elf_generic_reloc, /* special_function */
112 "R_XSTORMY16_16", /* name */
113 FALSE, /* partial_inplace */
115 0xffff, /* dst_mask */
116 FALSE), /* pcrel_offset */
118 /* An 8 bit absolute relocation. */
119 HOWTO (R_XSTORMY16_8, /* type */
121 0, /* size (0 = byte, 1 = short, 2 = long) */
123 FALSE, /* pc_relative */
125 complain_overflow_unsigned, /* complain_on_overflow */
126 bfd_elf_generic_reloc, /* special_function */
127 "R_XSTORMY16_8", /* name */
128 FALSE, /* partial_inplace */
131 FALSE), /* pcrel_offset */
133 /* A 32 bit pc-relative relocation. */
134 HOWTO (R_XSTORMY16_PC32, /* type */
136 2, /* size (0 = byte, 1 = short, 2 = long) */
138 TRUE, /* pc_relative */
140 complain_overflow_dont, /* complain_on_overflow */
141 bfd_elf_generic_reloc, /* special_function */
142 "R_XSTORMY16_PC32", /* name */
143 FALSE, /* partial_inplace */
145 0xffffffff, /* dst_mask */
146 TRUE), /* pcrel_offset */
148 /* A 16 bit pc-relative relocation. */
149 HOWTO (R_XSTORMY16_PC16, /* type */
151 1, /* size (0 = byte, 1 = short, 2 = long) */
153 TRUE, /* pc_relative */
155 complain_overflow_signed, /* complain_on_overflow */
156 bfd_elf_generic_reloc, /* special_function */
157 "R_XSTORMY16_PC16", /* name */
158 FALSE, /* partial_inplace */
160 0xffffffff, /* dst_mask */
161 TRUE), /* pcrel_offset */
163 /* An 8 bit pc-relative relocation. */
164 HOWTO (R_XSTORMY16_PC8, /* type */
166 0, /* size (0 = byte, 1 = short, 2 = long) */
168 TRUE, /* pc_relative */
170 complain_overflow_signed, /* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_XSTORMY16_PC8", /* name */
173 FALSE, /* partial_inplace */
175 0xffffffff, /* dst_mask */
176 TRUE), /* pcrel_offset */
178 /* A 12-bit pc-relative relocation suitable for the branch instructions. */
179 HOWTO (R_XSTORMY16_REL_12, /* type */
181 1, /* size (0 = byte, 1 = short, 2 = long) */
183 TRUE, /* pc_relative */
185 complain_overflow_signed, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_XSTORMY16_REL_12", /* name */
188 FALSE, /* partial_inplace */
190 0x0ffe, /* dst_mask */
191 TRUE), /* pcrel_offset */
193 /* A 24-bit absolute relocation suitable for the jump instructions. */
194 HOWTO (R_XSTORMY16_24, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_unsigned, /* complain_on_overflow */
201 xstormy16_elf_24_reloc, /* special_function */
202 "R_XSTORMY16_24", /* name */
203 TRUE, /* partial_inplace */
205 0xffff00ff, /* dst_mask */
206 TRUE), /* pcrel_offset */
208 /* A 16 bit absolute relocation to a function pointer. */
209 HOWTO (R_XSTORMY16_FPTR16, /* type */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
213 FALSE, /* pc_relative */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_XSTORMY16_FPTR16", /* name */
218 FALSE, /* partial_inplace */
220 0xffffffff, /* dst_mask */
221 FALSE), /* pcrel_offset */
223 /* Low order 16 bit value of a high memory address. */
224 HOWTO (R_XSTORMY16_LO16, /* type */
226 1, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE, /* pc_relative */
230 complain_overflow_dont, /* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_XSTORMY16_LO16", /* name */
233 FALSE, /* partial_inplace */
235 0xffff, /* dst_mask */
236 FALSE), /* pcrel_offset */
238 /* High order 16 bit value of a high memory address. */
239 HOWTO (R_XSTORMY16_HI16, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE, /* pc_relative */
245 complain_overflow_dont, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_XSTORMY16_HI16", /* name */
248 FALSE, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
253 /* A 12 bit absolute relocation. */
254 HOWTO (R_XSTORMY16_12, /* type */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE, /* pc_relative */
260 complain_overflow_signed, /* complain_on_overflow */
261 bfd_elf_generic_reloc, /* special_function */
262 "R_XSTORMY16_12", /* name */
263 FALSE, /* partial_inplace */
264 0x0000, /* src_mask */
265 0x0fff, /* dst_mask */
266 FALSE), /* pcrel_offset */
269 static reloc_howto_type xstormy16_elf_howto_table2 [] =
271 /* GNU extension to record C++ vtable hierarchy */
272 HOWTO (R_XSTORMY16_GNU_VTINHERIT, /* type */
274 2, /* size (0 = byte, 1 = short, 2 = long) */
276 FALSE, /* pc_relative */
278 complain_overflow_dont, /* complain_on_overflow */
279 NULL, /* special_function */
280 "R_XSTORMY16_GNU_VTINHERIT", /* name */
281 FALSE, /* partial_inplace */
284 FALSE), /* pcrel_offset */
286 /* GNU extension to record C++ vtable member usage */
287 HOWTO (R_XSTORMY16_GNU_VTENTRY, /* type */
289 2, /* size (0 = byte, 1 = short, 2 = long) */
291 FALSE, /* pc_relative */
293 complain_overflow_dont, /* complain_on_overflow */
294 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
295 "R_XSTORMY16_GNU_VTENTRY", /* name */
296 FALSE, /* partial_inplace */
299 FALSE), /* pcrel_offset */
303 /* Map BFD reloc types to XSTORMY16 ELF reloc types. */
305 typedef struct xstormy16_reloc_map
307 bfd_reloc_code_real_type bfd_reloc_val;
308 unsigned int xstormy16_reloc_val;
309 reloc_howto_type * table;
312 static const reloc_map xstormy16_reloc_map [] =
314 { BFD_RELOC_NONE, R_XSTORMY16_NONE, xstormy16_elf_howto_table },
315 { BFD_RELOC_32, R_XSTORMY16_32, xstormy16_elf_howto_table },
316 { BFD_RELOC_16, R_XSTORMY16_16, xstormy16_elf_howto_table },
317 { BFD_RELOC_8, R_XSTORMY16_8, xstormy16_elf_howto_table },
318 { BFD_RELOC_32_PCREL, R_XSTORMY16_PC32, xstormy16_elf_howto_table },
319 { BFD_RELOC_16_PCREL, R_XSTORMY16_PC16, xstormy16_elf_howto_table },
320 { BFD_RELOC_8_PCREL, R_XSTORMY16_PC8, xstormy16_elf_howto_table },
321 { BFD_RELOC_XSTORMY16_REL_12, R_XSTORMY16_REL_12, xstormy16_elf_howto_table },
322 { BFD_RELOC_XSTORMY16_24, R_XSTORMY16_24, xstormy16_elf_howto_table },
323 { BFD_RELOC_XSTORMY16_FPTR16, R_XSTORMY16_FPTR16, xstormy16_elf_howto_table },
324 { BFD_RELOC_LO16, R_XSTORMY16_LO16, xstormy16_elf_howto_table },
325 { BFD_RELOC_HI16, R_XSTORMY16_HI16, xstormy16_elf_howto_table },
326 { BFD_RELOC_XSTORMY16_12, R_XSTORMY16_12, xstormy16_elf_howto_table },
327 { BFD_RELOC_VTABLE_INHERIT, R_XSTORMY16_GNU_VTINHERIT, xstormy16_elf_howto_table2 },
328 { BFD_RELOC_VTABLE_ENTRY, R_XSTORMY16_GNU_VTENTRY, xstormy16_elf_howto_table2 },
331 static reloc_howto_type *
332 xstormy16_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
333 bfd_reloc_code_real_type code)
337 for (i = ARRAY_SIZE (xstormy16_reloc_map); i--;)
339 const reloc_map * entry;
341 entry = xstormy16_reloc_map + i;
343 if (entry->bfd_reloc_val == code)
344 return entry->table + (entry->xstormy16_reloc_val
345 - entry->table[0].type);
351 static reloc_howto_type *
352 xstormy16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
358 i < (sizeof (xstormy16_elf_howto_table)
359 / sizeof (xstormy16_elf_howto_table[0]));
361 if (xstormy16_elf_howto_table[i].name != NULL
362 && strcasecmp (xstormy16_elf_howto_table[i].name, r_name) == 0)
363 return &xstormy16_elf_howto_table[i];
366 i < (sizeof (xstormy16_elf_howto_table2)
367 / sizeof (xstormy16_elf_howto_table2[0]));
369 if (xstormy16_elf_howto_table2[i].name != NULL
370 && strcasecmp (xstormy16_elf_howto_table2[i].name, r_name) == 0)
371 return &xstormy16_elf_howto_table2[i];
376 /* Set the howto pointer for an XSTORMY16 ELF reloc. */
379 xstormy16_info_to_howto_rela (bfd * abfd,
381 Elf_Internal_Rela * dst)
383 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
385 if (r_type <= (unsigned int) R_XSTORMY16_12)
386 cache_ptr->howto = &xstormy16_elf_howto_table [r_type];
387 else if (r_type - R_XSTORMY16_GNU_VTINHERIT
388 <= ((unsigned int) R_XSTORMY16_GNU_VTENTRY
389 - (unsigned int) R_XSTORMY16_GNU_VTINHERIT))
391 = &xstormy16_elf_howto_table2 [r_type - R_XSTORMY16_GNU_VTINHERIT];
394 /* xgettext:c-format */
395 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
397 bfd_set_error (bfd_error_bad_value);
403 /* We support 16-bit pointers to code above 64k by generating a thunk
404 below 64k containing a JMPF instruction to the final address. We
405 cannot, unfortunately, minimize the number of thunks unless the
406 -relax switch is given, as otherwise we have no idea where the
407 sections will fall in the address space. */
410 xstormy16_elf_check_relocs (bfd *abfd,
411 struct bfd_link_info *info,
413 const Elf_Internal_Rela *relocs)
415 const Elf_Internal_Rela *rel, *relend;
416 struct elf_link_hash_entry **sym_hashes;
417 Elf_Internal_Shdr *symtab_hdr;
418 bfd_vma *local_plt_offsets;
422 if (bfd_link_relocatable (info))
425 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
426 sym_hashes = elf_sym_hashes (abfd);
427 local_plt_offsets = elf_local_got_offsets (abfd);
428 dynobj = elf_hash_table(info)->dynobj;
430 relend = relocs + sec->reloc_count;
431 for (rel = relocs; rel < relend; ++rel)
433 unsigned long r_symndx;
434 struct elf_link_hash_entry *h;
437 r_symndx = ELF32_R_SYM (rel->r_info);
438 if (r_symndx < symtab_hdr->sh_info)
442 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
443 while (h->root.type == bfd_link_hash_indirect
444 || h->root.type == bfd_link_hash_warning)
445 h = (struct elf_link_hash_entry *) h->root.u.i.link;
448 switch (ELF32_R_TYPE (rel->r_info))
450 /* This relocation describes a 16-bit pointer to a function.
451 We may need to allocate a thunk in low memory; reserve memory
453 case R_XSTORMY16_FPTR16:
454 if (rel->r_addend != 0)
456 (*info->callbacks->warning)
457 (info, _("non-zero addend in @fptr reloc"), 0,
462 elf_hash_table (info)->dynobj = dynobj = abfd;
463 splt = elf_hash_table (info)->splt;
466 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
467 | SEC_IN_MEMORY | SEC_LINKER_CREATED
468 | SEC_READONLY | SEC_CODE);
470 splt = bfd_make_section_anyway_with_flags (dynobj, ".plt",
472 elf_hash_table (info)->splt = splt;
474 || ! bfd_set_section_alignment (dynobj, splt, 1))
479 offset = &h->plt.offset;
482 if (local_plt_offsets == NULL)
487 size = symtab_hdr->sh_info * sizeof (bfd_vma);
488 local_plt_offsets = bfd_alloc (abfd, size);
489 if (local_plt_offsets == NULL)
491 elf_local_got_offsets (abfd) = local_plt_offsets;
493 for (i = 0; i < symtab_hdr->sh_info; i++)
494 local_plt_offsets[i] = (bfd_vma) -1;
496 offset = &local_plt_offsets[r_symndx];
499 if (*offset == (bfd_vma) -1)
501 *offset = splt->size;
506 /* This relocation describes the C++ object vtable hierarchy.
507 Reconstruct it for later use during GC. */
508 case R_XSTORMY16_GNU_VTINHERIT:
509 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
513 /* This relocation describes which C++ vtable entries are actually
514 used. Record for later use during GC. */
515 case R_XSTORMY16_GNU_VTENTRY:
516 BFD_ASSERT (h != NULL);
518 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
527 /* A subroutine of xstormy16_elf_relax_section. If the global symbol H
528 is within the low 64k, remove any entry for it in the plt. */
530 struct relax_plt_data
537 xstormy16_relax_plt_check (struct elf_link_hash_entry *h, void * xdata)
539 struct relax_plt_data *data = (struct relax_plt_data *) xdata;
541 if (h->plt.offset != (bfd_vma) -1)
545 if (h->root.type == bfd_link_hash_undefined
546 || h->root.type == bfd_link_hash_undefweak)
549 address = (h->root.u.def.section->output_section->vma
550 + h->root.u.def.section->output_offset
551 + h->root.u.def.value);
553 if (address <= 0xffff)
556 data->splt->size -= 4;
564 /* A subroutine of xstormy16_elf_relax_section. If the global symbol H
565 previously had a plt entry, give it a new entry offset. */
568 xstormy16_relax_plt_realloc (struct elf_link_hash_entry *h, void * xdata)
570 bfd_vma *entry = (bfd_vma *) xdata;
572 if (h->plt.offset != (bfd_vma) -1)
574 h->plt.offset = *entry;
582 xstormy16_elf_relax_section (bfd *dynobj,
584 struct bfd_link_info *info,
587 struct relax_plt_data relax_plt_data;
590 /* Assume nothing changes. */
593 if (bfd_link_relocatable (info))
596 /* We only relax the .plt section at the moment. */
597 if (dynobj != elf_hash_table (info)->dynobj
598 || strcmp (splt->name, ".plt") != 0)
601 /* Quick check for an empty plt. */
605 /* Map across all global symbols; see which ones happen to
606 fall in the low 64k. */
607 relax_plt_data.splt = splt;
608 relax_plt_data.again = again;
609 elf_link_hash_traverse (elf_hash_table (info), xstormy16_relax_plt_check,
612 /* Likewise for local symbols, though that's somewhat less convenient
613 as we have to walk the list of input bfds and swap in symbol data. */
614 for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link.next)
616 bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
617 Elf_Internal_Shdr *symtab_hdr;
618 Elf_Internal_Sym *isymbuf = NULL;
621 if (! local_plt_offsets)
624 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
625 if (symtab_hdr->sh_info != 0)
627 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
629 isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
630 symtab_hdr->sh_info, 0,
636 for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
638 Elf_Internal_Sym *isym;
642 if (local_plt_offsets[idx] == (bfd_vma) -1)
645 isym = &isymbuf[idx];
646 if (isym->st_shndx == SHN_UNDEF)
648 else if (isym->st_shndx == SHN_ABS)
649 tsec = bfd_abs_section_ptr;
650 else if (isym->st_shndx == SHN_COMMON)
651 tsec = bfd_com_section_ptr;
653 tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx);
655 address = (tsec->output_section->vma
656 + tsec->output_offset
658 if (address <= 0xffff)
660 local_plt_offsets[idx] = -1;
667 && symtab_hdr->contents != (unsigned char *) isymbuf)
669 if (! info->keep_memory)
673 /* Cache the symbols for elf_link_input_bfd. */
674 symtab_hdr->contents = (unsigned char *) isymbuf;
679 /* If we changed anything, walk the symbols again to reallocate
680 .plt entry addresses. */
681 if (*again && splt->size > 0)
685 elf_link_hash_traverse (elf_hash_table (info),
686 xstormy16_relax_plt_realloc, &entry);
688 for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link.next)
690 bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
691 unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info;
694 if (! local_plt_offsets)
697 for (idx = 0; idx < nlocals; ++idx)
698 if (local_plt_offsets[idx] != (bfd_vma) -1)
700 local_plt_offsets[idx] = entry;
710 xstormy16_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
711 struct bfd_link_info *info)
716 if (bfd_link_relocatable (info))
719 dynobj = elf_hash_table (info)->dynobj;
723 splt = elf_hash_table (info)->splt;
724 BFD_ASSERT (splt != NULL);
726 splt->contents = bfd_zalloc (dynobj, splt->size);
727 if (splt->contents == NULL)
733 /* Relocate an XSTORMY16 ELF section.
735 The RELOCATE_SECTION function is called by the new ELF backend linker
736 to handle the relocations for a section.
738 The relocs are always passed as Rela structures; if the section
739 actually uses Rel structures, the r_addend field will always be
742 This function is responsible for adjusting the section contents as
743 necessary, and (if using Rela relocs and generating a relocatable
744 output file) adjusting the reloc addend as necessary.
746 This function does not have to worry about setting the reloc
747 address or the reloc symbol index.
749 LOCAL_SYMS is a pointer to the swapped in local symbols.
751 LOCAL_SECTIONS is an array giving the section in the input file
752 corresponding to the st_shndx field of each local symbol.
754 The global hash table entry for the global symbols can be found
755 via elf_sym_hashes (input_bfd).
757 When generating relocatable output, this function must handle
758 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
759 going to be the section symbol corresponding to the output
760 section, which means that the addend must be adjusted
764 xstormy16_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
765 struct bfd_link_info * info,
767 asection * input_section,
769 Elf_Internal_Rela * relocs,
770 Elf_Internal_Sym * local_syms,
771 asection ** local_sections)
773 Elf_Internal_Shdr * symtab_hdr;
774 struct elf_link_hash_entry ** sym_hashes;
775 Elf_Internal_Rela * rel;
776 Elf_Internal_Rela * relend;
779 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
780 sym_hashes = elf_sym_hashes (input_bfd);
781 relend = relocs + input_section->reloc_count;
783 splt = elf_hash_table (info)->splt;
785 for (rel = relocs; rel < relend; rel ++)
787 reloc_howto_type * howto;
788 unsigned long r_symndx;
789 Elf_Internal_Sym * sym;
791 struct elf_link_hash_entry * h;
793 bfd_reloc_status_type r;
794 const char * name = NULL;
797 r_type = ELF32_R_TYPE (rel->r_info);
799 if ( r_type == R_XSTORMY16_GNU_VTINHERIT
800 || r_type == R_XSTORMY16_GNU_VTENTRY)
803 r_symndx = ELF32_R_SYM (rel->r_info);
804 howto = xstormy16_elf_howto_table + ELF32_R_TYPE (rel->r_info);
809 if (r_symndx < symtab_hdr->sh_info)
811 sym = local_syms + r_symndx;
812 sec = local_sections [r_symndx];
813 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
817 bfd_boolean unresolved_reloc, warned, ignored;
819 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
820 r_symndx, symtab_hdr, sym_hashes,
822 unresolved_reloc, warned, ignored);
825 if (sec != NULL && discarded_section (sec))
826 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
827 rel, 1, relend, howto, 0, contents);
829 if (bfd_link_relocatable (info))
833 name = h->root.root.string;
836 name = (bfd_elf_string_from_elf_section
837 (input_bfd, symtab_hdr->sh_link, sym->st_name));
838 if (name == NULL || *name == '\0')
839 name = bfd_section_name (input_bfd, sec);
842 switch (ELF32_R_TYPE (rel->r_info))
846 bfd_vma reloc = relocation + rel->r_addend;
849 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
852 x |= (reloc << 8) & 0xffff0000;
853 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
855 if (reloc & ~0xffffff)
856 r = bfd_reloc_overflow;
862 case R_XSTORMY16_FPTR16:
867 plt_offset = &h->plt.offset;
869 plt_offset = elf_local_got_offsets (input_bfd) + r_symndx;
871 if (relocation <= 0xffff)
873 /* If the symbol is in range for a 16-bit address, we should
874 have deallocated the plt entry in relax_section. */
875 BFD_ASSERT (*plt_offset == (bfd_vma) -1);
879 /* If the symbol is out of range for a 16-bit address,
880 we must have allocated a plt entry. */
881 BFD_ASSERT (*plt_offset != (bfd_vma) -1);
883 /* If this is the first time we've processed this symbol,
884 fill in the plt entry with the correct symbol address. */
885 if ((*plt_offset & 1) == 0)
889 x = 0x00000200; /* jmpf */
890 x |= relocation & 0xff;
891 x |= (relocation << 8) & 0xffff0000;
892 bfd_put_32 (input_bfd, x, splt->contents + *plt_offset);
896 relocation = (splt->output_section->vma
897 + splt->output_offset
898 + (*plt_offset & -2));
900 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
901 contents, rel->r_offset,
907 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
908 contents, rel->r_offset,
909 relocation, rel->r_addend);
913 if (r != bfd_reloc_ok)
915 const char * msg = NULL;
919 case bfd_reloc_overflow:
920 (*info->callbacks->reloc_overflow)
921 (info, (h ? &h->root : NULL), name, howto->name,
922 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
925 case bfd_reloc_undefined:
926 (*info->callbacks->undefined_symbol)
927 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
930 case bfd_reloc_outofrange:
931 msg = _("internal error: out of range error");
934 case bfd_reloc_notsupported:
935 msg = _("internal error: unsupported relocation error");
938 case bfd_reloc_dangerous:
939 msg = _("internal error: dangerous relocation");
943 msg = _("internal error: unknown error");
948 (*info->callbacks->warning) (info, msg, name, input_bfd,
949 input_section, rel->r_offset);
956 /* This must exist if dynobj is ever set. */
959 xstormy16_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
960 struct bfd_link_info *info)
962 bfd *dynobj = elf_hash_table (info)->dynobj;
963 asection *splt = elf_hash_table (info)->splt;
965 /* As an extra sanity check, verify that all plt entries have
968 if (dynobj != NULL && splt != NULL)
970 bfd_byte *contents = splt->contents;
971 unsigned int i, size = splt->size;
973 for (i = 0; i < size; i += 4)
975 unsigned int x = bfd_get_32 (dynobj, contents + i);
984 /* Return the section that should be marked against GC for a given
988 xstormy16_elf_gc_mark_hook (asection *sec,
989 struct bfd_link_info *info,
990 Elf_Internal_Rela *rel,
991 struct elf_link_hash_entry *h,
992 Elf_Internal_Sym *sym)
995 switch (ELF32_R_TYPE (rel->r_info))
997 case R_XSTORMY16_GNU_VTINHERIT:
998 case R_XSTORMY16_GNU_VTENTRY:
1002 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1005 #define ELF_ARCH bfd_arch_xstormy16
1006 #define ELF_MACHINE_CODE EM_XSTORMY16
1007 #define ELF_MAXPAGESIZE 0x100
1009 #define TARGET_LITTLE_SYM xstormy16_elf32_vec
1010 #define TARGET_LITTLE_NAME "elf32-xstormy16"
1012 #define elf_info_to_howto_rel NULL
1013 #define elf_info_to_howto xstormy16_info_to_howto_rela
1014 #define elf_backend_relocate_section xstormy16_elf_relocate_section
1015 #define elf_backend_gc_mark_hook xstormy16_elf_gc_mark_hook
1016 #define elf_backend_check_relocs xstormy16_elf_check_relocs
1017 #define elf_backend_always_size_sections \
1018 xstormy16_elf_always_size_sections
1019 #define elf_backend_omit_section_dynsym \
1020 _bfd_elf_omit_section_dynsym_all
1021 #define elf_backend_finish_dynamic_sections \
1022 xstormy16_elf_finish_dynamic_sections
1024 #define elf_backend_can_gc_sections 1
1025 #define elf_backend_rela_normal 1
1027 #define bfd_elf32_bfd_reloc_type_lookup xstormy16_reloc_type_lookup
1028 #define bfd_elf32_bfd_reloc_name_lookup \
1029 xstormy16_reloc_name_lookup
1030 #define bfd_elf32_bfd_relax_section xstormy16_elf_relax_section
1032 #include "elf32-target.h"