1 /* SPU specific support for 32-bit ELF
3 Copyright 2006, 2007 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 2 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 along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27 #include "elf32-spu.h"
29 /* We use RELA style relocs. Don't define USE_REL. */
31 static bfd_reloc_status_type spu_elf_rel9 (bfd *, arelent *, asymbol *,
35 /* Values of type 'enum elf_spu_reloc_type' are used to index this
36 array, so it must be declared in the order of that type. */
38 static reloc_howto_type elf_howto_table[] = {
39 HOWTO (R_SPU_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont,
40 bfd_elf_generic_reloc, "SPU_NONE",
41 FALSE, 0, 0x00000000, FALSE),
42 HOWTO (R_SPU_ADDR10, 4, 2, 10, FALSE, 14, complain_overflow_bitfield,
43 bfd_elf_generic_reloc, "SPU_ADDR10",
44 FALSE, 0, 0x00ffc000, FALSE),
45 HOWTO (R_SPU_ADDR16, 2, 2, 16, FALSE, 7, complain_overflow_bitfield,
46 bfd_elf_generic_reloc, "SPU_ADDR16",
47 FALSE, 0, 0x007fff80, FALSE),
48 HOWTO (R_SPU_ADDR16_HI, 16, 2, 16, FALSE, 7, complain_overflow_bitfield,
49 bfd_elf_generic_reloc, "SPU_ADDR16_HI",
50 FALSE, 0, 0x007fff80, FALSE),
51 HOWTO (R_SPU_ADDR16_LO, 0, 2, 16, FALSE, 7, complain_overflow_dont,
52 bfd_elf_generic_reloc, "SPU_ADDR16_LO",
53 FALSE, 0, 0x007fff80, FALSE),
54 HOWTO (R_SPU_ADDR18, 0, 2, 18, FALSE, 7, complain_overflow_bitfield,
55 bfd_elf_generic_reloc, "SPU_ADDR18",
56 FALSE, 0, 0x01ffff80, FALSE),
57 HOWTO (R_SPU_ADDR32, 0, 2, 32, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "SPU_ADDR32",
59 FALSE, 0, 0xffffffff, FALSE),
60 HOWTO (R_SPU_REL16, 2, 2, 16, TRUE, 7, complain_overflow_bitfield,
61 bfd_elf_generic_reloc, "SPU_REL16",
62 FALSE, 0, 0x007fff80, TRUE),
63 HOWTO (R_SPU_ADDR7, 0, 2, 7, FALSE, 14, complain_overflow_dont,
64 bfd_elf_generic_reloc, "SPU_ADDR7",
65 FALSE, 0, 0x001fc000, FALSE),
66 HOWTO (R_SPU_REL9, 2, 2, 9, TRUE, 0, complain_overflow_signed,
67 spu_elf_rel9, "SPU_REL9",
68 FALSE, 0, 0x0180007f, TRUE),
69 HOWTO (R_SPU_REL9I, 2, 2, 9, TRUE, 0, complain_overflow_signed,
70 spu_elf_rel9, "SPU_REL9I",
71 FALSE, 0, 0x0000c07f, TRUE),
72 HOWTO (R_SPU_ADDR10I, 0, 2, 10, FALSE, 14, complain_overflow_signed,
73 bfd_elf_generic_reloc, "SPU_ADDR10I",
74 FALSE, 0, 0x00ffc000, FALSE),
75 HOWTO (R_SPU_ADDR16I, 0, 2, 16, FALSE, 7, complain_overflow_signed,
76 bfd_elf_generic_reloc, "SPU_ADDR16I",
77 FALSE, 0, 0x007fff80, FALSE),
78 HOWTO (R_SPU_REL32, 0, 2, 32, TRUE, 0, complain_overflow_dont,
79 bfd_elf_generic_reloc, "SPU_REL32",
80 FALSE, 0, 0xffffffff, TRUE),
83 static struct bfd_elf_special_section const spu_elf_special_sections[] = {
84 { ".toe", 4, 0, SHT_NOBITS, SHF_ALLOC },
88 static enum elf_spu_reloc_type
89 spu_elf_bfd_to_reloc_type (bfd_reloc_code_real_type code)
95 case BFD_RELOC_SPU_IMM10W:
97 case BFD_RELOC_SPU_IMM16W:
99 case BFD_RELOC_SPU_LO16:
100 return R_SPU_ADDR16_LO;
101 case BFD_RELOC_SPU_HI16:
102 return R_SPU_ADDR16_HI;
103 case BFD_RELOC_SPU_IMM18:
105 case BFD_RELOC_SPU_PCREL16:
107 case BFD_RELOC_SPU_IMM7:
109 case BFD_RELOC_SPU_IMM8:
111 case BFD_RELOC_SPU_PCREL9a:
113 case BFD_RELOC_SPU_PCREL9b:
115 case BFD_RELOC_SPU_IMM10:
116 return R_SPU_ADDR10I;
117 case BFD_RELOC_SPU_IMM16:
118 return R_SPU_ADDR16I;
121 case BFD_RELOC_32_PCREL:
127 spu_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
129 Elf_Internal_Rela *dst)
131 enum elf_spu_reloc_type r_type;
133 r_type = (enum elf_spu_reloc_type) ELF32_R_TYPE (dst->r_info);
134 BFD_ASSERT (r_type < R_SPU_max);
135 cache_ptr->howto = &elf_howto_table[(int) r_type];
138 static reloc_howto_type *
139 spu_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
140 bfd_reloc_code_real_type code)
142 return elf_howto_table + spu_elf_bfd_to_reloc_type (code);
145 static reloc_howto_type *
146 spu_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
151 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
152 if (elf_howto_table[i].name != NULL
153 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
154 return &elf_howto_table[i];
159 /* Apply R_SPU_REL9 and R_SPU_REL9I relocs. */
161 static bfd_reloc_status_type
162 spu_elf_rel9 (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
163 void *data, asection *input_section,
164 bfd *output_bfd, char **error_message)
166 bfd_size_type octets;
170 /* If this is a relocatable link (output_bfd test tells us), just
171 call the generic function. Any adjustment will be done at final
173 if (output_bfd != NULL)
174 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
175 input_section, output_bfd, error_message);
177 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
178 return bfd_reloc_outofrange;
179 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
181 /* Get symbol value. */
183 if (!bfd_is_com_section (symbol->section))
185 if (symbol->section->output_section)
186 val += symbol->section->output_section->vma;
188 val += reloc_entry->addend;
190 /* Make it pc-relative. */
191 val -= input_section->output_section->vma + input_section->output_offset;
194 if (val + 256 >= 512)
195 return bfd_reloc_overflow;
197 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
199 /* Move two high bits of value to REL9I and REL9 position.
200 The mask will take care of selecting the right field. */
201 val = (val & 0x7f) | ((val & 0x180) << 7) | ((val & 0x180) << 16);
202 insn &= ~reloc_entry->howto->dst_mask;
203 insn |= val & reloc_entry->howto->dst_mask;
204 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
209 spu_elf_new_section_hook (bfd *abfd, asection *sec)
211 if (!sec->used_by_bfd)
213 struct _spu_elf_section_data *sdata;
215 sdata = bfd_zalloc (abfd, sizeof (*sdata));
218 sec->used_by_bfd = sdata;
221 return _bfd_elf_new_section_hook (abfd, sec);
224 /* Specially mark defined symbols named _EAR_* with BSF_KEEP so that
225 strip --strip-unneeded will not remove them. */
228 spu_elf_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
230 if (sym->name != NULL
231 && sym->section != bfd_abs_section_ptr
232 && strncmp (sym->name, "_EAR_", 5) == 0)
233 sym->flags |= BSF_KEEP;
236 /* SPU ELF linker hash table. */
238 struct spu_link_hash_table
240 struct elf_link_hash_table elf;
242 /* The stub hash table. */
243 struct bfd_hash_table stub_hash_table;
245 /* Shortcuts to overlay sections. */
249 struct elf_link_hash_entry *ovly_load;
251 /* An array of two output sections per overlay region, chosen such that
252 the first section vma is the overlay buffer vma (ie. the section has
253 the lowest vma in the group that occupy the region), and the second
254 section vma+size specifies the end of the region. We keep pointers
255 to sections like this because section vmas may change when laying
257 asection **ovl_region;
259 /* Number of overlay buffers. */
260 unsigned int num_buf;
262 /* Total number of overlays. */
263 unsigned int num_overlays;
265 /* Set if we should emit symbols for stubs. */
266 unsigned int emit_stub_syms:1;
268 /* Set if we want stubs on calls out of overlay regions to
269 non-overlay regions. */
270 unsigned int non_overlay_stubs : 1;
273 unsigned int stub_overflow : 1;
276 #define spu_hash_table(p) \
277 ((struct spu_link_hash_table *) ((p)->hash))
279 struct spu_stub_hash_entry
281 struct bfd_hash_entry root;
283 /* Destination of this stub. */
284 asection *target_section;
287 /* Offset of entry in stub section. */
290 /* Offset from this stub to stub that loads the overlay index. */
294 /* Create an entry in a spu stub hash table. */
296 static struct bfd_hash_entry *
297 stub_hash_newfunc (struct bfd_hash_entry *entry,
298 struct bfd_hash_table *table,
301 /* Allocate the structure if it has not already been allocated by a
305 entry = bfd_hash_allocate (table, sizeof (struct spu_stub_hash_entry));
310 /* Call the allocation method of the superclass. */
311 entry = bfd_hash_newfunc (entry, table, string);
314 struct spu_stub_hash_entry *sh = (struct spu_stub_hash_entry *) entry;
316 sh->target_section = NULL;
325 /* Create a spu ELF linker hash table. */
327 static struct bfd_link_hash_table *
328 spu_elf_link_hash_table_create (bfd *abfd)
330 struct spu_link_hash_table *htab;
332 htab = bfd_malloc (sizeof (*htab));
336 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd,
337 _bfd_elf_link_hash_newfunc,
338 sizeof (struct elf_link_hash_entry)))
344 /* Init the stub hash table too. */
345 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
346 sizeof (struct spu_stub_hash_entry)))
349 memset (&htab->stub, 0,
350 sizeof (*htab) - offsetof (struct spu_link_hash_table, stub));
352 return &htab->elf.root;
355 /* Free the derived linker hash table. */
358 spu_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
360 struct spu_link_hash_table *ret = (struct spu_link_hash_table *) hash;
362 bfd_hash_table_free (&ret->stub_hash_table);
363 _bfd_generic_link_hash_table_free (hash);
366 /* Find the symbol for the given R_SYMNDX in IBFD and set *HP and *SYMP
367 to (hash, NULL) for global symbols, and (NULL, sym) for locals. Set
368 *SYMSECP to the symbol's section. *LOCSYMSP caches local syms. */
371 get_sym_h (struct elf_link_hash_entry **hp,
372 Elf_Internal_Sym **symp,
374 Elf_Internal_Sym **locsymsp,
375 unsigned long r_symndx,
378 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
380 if (r_symndx >= symtab_hdr->sh_info)
382 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
383 struct elf_link_hash_entry *h;
385 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
386 while (h->root.type == bfd_link_hash_indirect
387 || h->root.type == bfd_link_hash_warning)
388 h = (struct elf_link_hash_entry *) h->root.u.i.link;
398 asection *symsec = NULL;
399 if (h->root.type == bfd_link_hash_defined
400 || h->root.type == bfd_link_hash_defweak)
401 symsec = h->root.u.def.section;
407 Elf_Internal_Sym *sym;
408 Elf_Internal_Sym *locsyms = *locsymsp;
412 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
414 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
416 0, NULL, NULL, NULL);
421 sym = locsyms + r_symndx;
431 asection *symsec = NULL;
432 if ((sym->st_shndx != SHN_UNDEF
433 && sym->st_shndx < SHN_LORESERVE)
434 || sym->st_shndx > SHN_HIRESERVE)
435 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
442 /* Build a name for an entry in the stub hash table. We can't use a
443 local symbol name because ld -r might generate duplicate local symbols. */
446 spu_stub_name (const asection *sym_sec,
447 const struct elf_link_hash_entry *h,
448 const Elf_Internal_Rela *rel)
455 len = strlen (h->root.root.string) + 1 + 8 + 1;
456 stub_name = bfd_malloc (len);
457 if (stub_name == NULL)
460 sprintf (stub_name, "%s+%x",
462 (int) rel->r_addend & 0xffffffff);
467 len = 8 + 1 + 8 + 1 + 8 + 1;
468 stub_name = bfd_malloc (len);
469 if (stub_name == NULL)
472 sprintf (stub_name, "%x:%x+%x",
473 sym_sec->id & 0xffffffff,
474 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
475 (int) rel->r_addend & 0xffffffff);
476 len = strlen (stub_name);
479 if (stub_name[len - 2] == '+'
480 && stub_name[len - 1] == '0'
481 && stub_name[len] == 0)
482 stub_name[len - 2] = 0;
487 /* Create the note section if not already present. This is done early so
488 that the linker maps the sections to the right place in the output. */
491 spu_elf_create_sections (bfd *output_bfd, struct bfd_link_info *info)
495 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->next)
496 if (bfd_get_section_by_name (ibfd, SPU_PTNOTE_SPUNAME) != NULL)
501 /* Make SPU_PTNOTE_SPUNAME section. */
508 ibfd = info->input_bfds;
509 flags = SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
510 s = bfd_make_section_anyway_with_flags (ibfd, SPU_PTNOTE_SPUNAME, flags);
512 || !bfd_set_section_alignment (ibfd, s, 4))
515 name_len = strlen (bfd_get_filename (output_bfd)) + 1;
516 size = 12 + ((sizeof (SPU_PLUGIN_NAME) + 3) & -4);
517 size += (name_len + 3) & -4;
519 if (!bfd_set_section_size (ibfd, s, size))
522 data = bfd_zalloc (ibfd, size);
526 bfd_put_32 (ibfd, sizeof (SPU_PLUGIN_NAME), data + 0);
527 bfd_put_32 (ibfd, name_len, data + 4);
528 bfd_put_32 (ibfd, 1, data + 8);
529 memcpy (data + 12, SPU_PLUGIN_NAME, sizeof (SPU_PLUGIN_NAME));
530 memcpy (data + 12 + ((sizeof (SPU_PLUGIN_NAME) + 3) & -4),
531 bfd_get_filename (output_bfd), name_len);
538 /* Return the section that should be marked against GC for a given
542 spu_elf_gc_mark_hook (asection *sec,
543 struct bfd_link_info *info ATTRIBUTE_UNUSED,
544 Elf_Internal_Rela *rel ATTRIBUTE_UNUSED,
545 struct elf_link_hash_entry *h,
546 Elf_Internal_Sym *sym)
550 switch (h->root.type)
552 case bfd_link_hash_defined:
553 case bfd_link_hash_defweak:
554 return h->root.u.def.section;
556 case bfd_link_hash_common:
557 return h->root.u.c.p->section;
564 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
569 /* qsort predicate to sort sections by vma. */
572 sort_sections (const void *a, const void *b)
574 const asection *const *s1 = a;
575 const asection *const *s2 = b;
576 bfd_signed_vma delta = (*s1)->vma - (*s2)->vma;
579 return delta < 0 ? -1 : 1;
581 return (*s1)->index - (*s2)->index;
584 /* Identify overlays in the output bfd, and number them. */
587 spu_elf_find_overlays (bfd *output_bfd, struct bfd_link_info *info)
589 struct spu_link_hash_table *htab = spu_hash_table (info);
590 asection **alloc_sec;
591 unsigned int i, n, ovl_index, num_buf;
595 if (output_bfd->section_count < 2)
598 alloc_sec = bfd_malloc (output_bfd->section_count * sizeof (*alloc_sec));
599 if (alloc_sec == NULL)
602 /* Pick out all the alloced sections. */
603 for (n = 0, s = output_bfd->sections; s != NULL; s = s->next)
604 if ((s->flags & SEC_ALLOC) != 0
605 && (s->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != SEC_THREAD_LOCAL
615 /* Sort them by vma. */
616 qsort (alloc_sec, n, sizeof (*alloc_sec), sort_sections);
618 /* Look for overlapping vmas. Any with overlap must be overlays.
619 Count them. Also count the number of overlay regions and for
620 each region save a section from that region with the lowest vma
621 and another section with the highest end vma. */
622 ovl_end = alloc_sec[0]->vma + alloc_sec[0]->size;
623 for (ovl_index = 0, num_buf = 0, i = 1; i < n; i++)
626 if (s->vma < ovl_end)
628 asection *s0 = alloc_sec[i - 1];
630 if (spu_elf_section_data (s0)->ovl_index == 0)
632 spu_elf_section_data (s0)->ovl_index = ++ovl_index;
633 alloc_sec[num_buf * 2] = s0;
634 alloc_sec[num_buf * 2 + 1] = s0;
637 spu_elf_section_data (s)->ovl_index = ++ovl_index;
638 if (ovl_end < s->vma + s->size)
640 ovl_end = s->vma + s->size;
641 alloc_sec[num_buf * 2 - 1] = s;
645 ovl_end = s->vma + s->size;
648 htab->num_overlays = ovl_index;
649 htab->num_buf = num_buf;
656 alloc_sec = bfd_realloc (alloc_sec, num_buf * 2 * sizeof (*alloc_sec));
657 if (alloc_sec == NULL)
660 htab->ovl_region = alloc_sec;
664 /* One of these per stub. */
665 #define SIZEOF_STUB1 8
666 #define ILA_79 0x4200004f /* ila $79,function_address */
667 #define BR 0x32000000 /* br stub2 */
669 /* One of these per overlay. */
670 #define SIZEOF_STUB2 8
671 #define ILA_78 0x4200004e /* ila $78,overlay_number */
673 #define NOP 0x40200000
675 /* Return true for all relative and absolute branch and hint instructions.
688 is_branch (const unsigned char *insn)
690 return (((insn[0] & 0xec) == 0x20 && (insn[1] & 0x80) == 0)
691 || (insn[0] & 0xfc) == 0x10);
694 /* Return TRUE if this reloc symbol should possibly go via an overlay stub. */
697 needs_ovl_stub (const char *sym_name,
699 asection *input_section,
700 struct spu_link_hash_table *htab,
701 bfd_boolean is_branch)
703 if (htab->num_overlays == 0)
707 || sym_sec->output_section == NULL
708 || spu_elf_section_data (sym_sec->output_section) == NULL)
711 /* setjmp always goes via an overlay stub, because then the return
712 and hence the longjmp goes via __ovly_return. That magically
713 makes setjmp/longjmp between overlays work. */
714 if (strncmp (sym_name, "setjmp", 6) == 0
715 && (sym_name[6] == '\0' || sym_name[6] == '@'))
718 /* Usually, symbols in non-overlay sections don't need stubs. */
719 if (spu_elf_section_data (sym_sec->output_section)->ovl_index == 0
720 && !htab->non_overlay_stubs)
723 /* A reference from some other section to a symbol in an overlay
724 section needs a stub. */
725 if (spu_elf_section_data (sym_sec->output_section)->ovl_index
726 != spu_elf_section_data (input_section->output_section)->ovl_index)
729 /* If this insn isn't a branch then we are possibly taking the
730 address of a function and passing it out somehow. */
735 struct bfd_hash_table *stub_hash_table;
736 struct spu_stub_hash_entry **sh;
741 /* Called via elf_link_hash_traverse to allocate stubs for any _SPUEAR_
745 allocate_spuear_stubs (struct elf_link_hash_entry *h, void *inf)
747 /* Symbols starting with _SPUEAR_ need a stub because they may be
748 invoked by the PPU. */
749 if ((h->root.type == bfd_link_hash_defined
750 || h->root.type == bfd_link_hash_defweak)
752 && strncmp (h->root.root.string, "_SPUEAR_", 8) == 0)
754 struct stubarr *stubs = inf;
755 static Elf_Internal_Rela zero_rel;
756 char *stub_name = spu_stub_name (h->root.u.def.section, h, &zero_rel);
757 struct spu_stub_hash_entry *sh;
759 if (stub_name == NULL)
765 sh = (struct spu_stub_hash_entry *)
766 bfd_hash_lookup (stubs->stub_hash_table, stub_name, TRUE, FALSE);
773 /* If this entry isn't new, we already have a stub. */
774 if (sh->target_section != NULL)
780 sh->target_section = h->root.u.def.section;
781 sh->target_off = h->root.u.def.value;
788 /* Called via bfd_hash_traverse to set up pointers to all symbols
789 in the stub hash table. */
792 populate_stubs (struct bfd_hash_entry *bh, void *inf)
794 struct stubarr *stubs = inf;
796 stubs->sh[--stubs->count] = (struct spu_stub_hash_entry *) bh;
800 /* qsort predicate to sort stubs by overlay number. */
803 sort_stubs (const void *a, const void *b)
805 const struct spu_stub_hash_entry *const *sa = a;
806 const struct spu_stub_hash_entry *const *sb = b;
810 i = spu_elf_section_data ((*sa)->target_section->output_section)->ovl_index;
811 i -= spu_elf_section_data ((*sb)->target_section->output_section)->ovl_index;
815 d = ((*sa)->target_section->output_section->vma
816 + (*sa)->target_section->output_offset
818 - (*sb)->target_section->output_section->vma
819 - (*sb)->target_section->output_offset
820 - (*sb)->target_off);
822 return d < 0 ? -1 : 1;
824 /* Two functions at the same address. Aliases perhaps. */
825 i = strcmp ((*sb)->root.string, (*sa)->root.string);
830 /* Allocate space for overlay call and return stubs. */
833 spu_elf_size_stubs (bfd *output_bfd,
834 struct bfd_link_info *info,
835 int non_overlay_stubs,
840 struct spu_link_hash_table *htab = spu_hash_table (info);
842 struct stubarr stubs;
846 htab->non_overlay_stubs = non_overlay_stubs;
847 stubs.stub_hash_table = &htab->stub_hash_table;
850 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
852 extern const bfd_target bfd_elf32_spu_vec;
853 Elf_Internal_Shdr *symtab_hdr;
855 Elf_Internal_Sym *local_syms = NULL;
857 if (ibfd->xvec != &bfd_elf32_spu_vec)
860 /* We'll need the symbol table in a second. */
861 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
862 if (symtab_hdr->sh_info == 0)
865 /* Walk over each section attached to the input bfd. */
866 for (section = ibfd->sections; section != NULL; section = section->next)
868 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
870 /* If there aren't any relocs, then there's nothing more to do. */
871 if ((section->flags & SEC_RELOC) == 0
872 || (section->flags & SEC_ALLOC) == 0
873 || (section->flags & SEC_LOAD) == 0
874 || section->reloc_count == 0)
877 /* If this section is a link-once section that will be
878 discarded, then don't create any stubs. */
879 if (section->output_section == NULL
880 || section->output_section->owner != output_bfd)
883 /* Get the relocs. */
885 = _bfd_elf_link_read_relocs (ibfd, section, NULL, NULL,
887 if (internal_relocs == NULL)
888 goto error_ret_free_local;
890 /* Now examine each relocation. */
891 irela = internal_relocs;
892 irelaend = irela + section->reloc_count;
893 for (; irela < irelaend; irela++)
895 enum elf_spu_reloc_type r_type;
898 Elf_Internal_Sym *sym;
899 struct elf_link_hash_entry *h;
900 const char *sym_name;
902 struct spu_stub_hash_entry *sh;
903 unsigned int sym_type;
904 enum _insn_type { non_branch, branch, call } insn_type;
906 r_type = ELF32_R_TYPE (irela->r_info);
907 r_indx = ELF32_R_SYM (irela->r_info);
909 if (r_type >= R_SPU_max)
911 bfd_set_error (bfd_error_bad_value);
912 goto error_ret_free_internal;
915 /* Determine the reloc target section. */
916 if (!get_sym_h (&h, &sym, &sym_sec, &local_syms, r_indx, ibfd))
917 goto error_ret_free_internal;
920 || sym_sec->output_section == NULL
921 || sym_sec->output_section->owner != output_bfd)
924 /* Ensure no stubs for user supplied overlay manager syms. */
926 && (strcmp (h->root.root.string, "__ovly_load") == 0
927 || strcmp (h->root.root.string, "__ovly_return") == 0))
930 insn_type = non_branch;
931 if (r_type == R_SPU_REL16
932 || r_type == R_SPU_ADDR16)
934 unsigned char insn[4];
936 if (!bfd_get_section_contents (ibfd, section, insn,
938 goto error_ret_free_internal;
940 if (is_branch (insn))
943 if ((insn[0] & 0xfd) == 0x31)
948 /* We are only interested in function symbols. */
952 sym_name = h->root.root.string;
956 sym_type = ELF_ST_TYPE (sym->st_info);
957 sym_name = bfd_elf_sym_name (sym_sec->owner,
962 if (sym_type != STT_FUNC)
964 /* It's common for people to write assembly and forget
965 to give function symbols the right type. Handle
966 calls to such symbols, but warn so that (hopefully)
967 people will fix their code. We need the symbol
968 type to be correct to distinguish function pointer
969 initialisation from other pointer initialisation. */
970 if (insn_type == call)
971 (*_bfd_error_handler) (_("warning: call to non-function"
972 " symbol %s defined in %B"),
973 sym_sec->owner, sym_name);
978 if (!needs_ovl_stub (sym_name, sym_sec, section, htab,
979 insn_type != non_branch))
982 stub_name = spu_stub_name (sym_sec, h, irela);
983 if (stub_name == NULL)
984 goto error_ret_free_internal;
986 sh = (struct spu_stub_hash_entry *)
987 bfd_hash_lookup (&htab->stub_hash_table, stub_name,
992 error_ret_free_internal:
993 if (elf_section_data (section)->relocs != internal_relocs)
994 free (internal_relocs);
995 error_ret_free_local:
996 if (local_syms != NULL
997 && (symtab_hdr->contents
998 != (unsigned char *) local_syms))
1003 /* If this entry isn't new, we already have a stub. */
1004 if (sh->target_section != NULL)
1010 sh->target_section = sym_sec;
1012 sh->target_off = h->root.u.def.value;
1014 sh->target_off = sym->st_value;
1015 sh->target_off += irela->r_addend;
1020 /* We're done with the internal relocs, free them. */
1021 if (elf_section_data (section)->relocs != internal_relocs)
1022 free (internal_relocs);
1025 if (local_syms != NULL
1026 && symtab_hdr->contents != (unsigned char *) local_syms)
1028 if (!info->keep_memory)
1031 symtab_hdr->contents = (unsigned char *) local_syms;
1035 elf_link_hash_traverse (&htab->elf, allocate_spuear_stubs, &stubs);
1040 if (stubs.count == 0)
1043 ibfd = info->input_bfds;
1044 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
1045 | SEC_HAS_CONTENTS | SEC_IN_MEMORY);
1046 htab->stub = bfd_make_section_anyway_with_flags (ibfd, ".stub", flags);
1048 if (htab->stub == NULL
1049 || !bfd_set_section_alignment (ibfd, htab->stub, 2))
1052 flags = (SEC_ALLOC | SEC_LOAD
1053 | SEC_HAS_CONTENTS | SEC_IN_MEMORY);
1054 htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags);
1055 *ovtab = htab->ovtab;
1056 if (htab->ovtab == NULL
1057 || !bfd_set_section_alignment (ibfd, htab->stub, 4))
1060 *toe = bfd_make_section_anyway_with_flags (ibfd, ".toe", SEC_ALLOC);
1062 || !bfd_set_section_alignment (ibfd, *toe, 4))
1066 /* Retrieve all the stubs and sort. */
1067 stubs.sh = bfd_malloc (stubs.count * sizeof (*stubs.sh));
1068 if (stubs.sh == NULL)
1071 bfd_hash_traverse (&htab->stub_hash_table, populate_stubs, &stubs);
1072 BFD_ASSERT (stubs.count == 0);
1075 qsort (stubs.sh, stubs.count, sizeof (*stubs.sh), sort_stubs);
1077 /* Now that the stubs are sorted, place them in the stub section.
1078 Stubs are grouped per overlay
1092 for (i = 0; i < stubs.count; i++)
1094 if (spu_elf_section_data (stubs.sh[group]->target_section
1095 ->output_section)->ovl_index
1096 != spu_elf_section_data (stubs.sh[i]->target_section
1097 ->output_section)->ovl_index)
1099 htab->stub->size += SIZEOF_STUB2;
1100 for (; group != i; group++)
1101 stubs.sh[group]->delta
1102 = stubs.sh[i - 1]->off - stubs.sh[group]->off;
1105 || ((stubs.sh[i - 1]->target_section->output_section->vma
1106 + stubs.sh[i - 1]->target_section->output_offset
1107 + stubs.sh[i - 1]->target_off)
1108 != (stubs.sh[i]->target_section->output_section->vma
1109 + stubs.sh[i]->target_section->output_offset
1110 + stubs.sh[i]->target_off)))
1112 stubs.sh[i]->off = htab->stub->size;
1113 htab->stub->size += SIZEOF_STUB1;
1116 stubs.sh[i]->off = stubs.sh[i - 1]->off;
1119 htab->stub->size += SIZEOF_STUB2;
1120 for (; group != i; group++)
1121 stubs.sh[group]->delta = stubs.sh[i - 1]->off - stubs.sh[group]->off;
1123 /* htab->ovtab consists of two arrays.
1133 . } _ovly_buf_table[]; */
1135 htab->ovtab->alignment_power = 4;
1136 htab->ovtab->size = htab->num_overlays * 16 + htab->num_buf * 4;
1141 /* Functions to handle embedded spu_ovl.o object. */
1144 ovl_mgr_open (struct bfd *nbfd ATTRIBUTE_UNUSED, void *stream)
1150 ovl_mgr_pread (struct bfd *abfd ATTRIBUTE_UNUSED,
1156 struct _ovl_stream *os;
1160 os = (struct _ovl_stream *) stream;
1161 max = (const char *) os->end - (const char *) os->start;
1163 if ((ufile_ptr) offset >= max)
1167 if (count > max - offset)
1168 count = max - offset;
1170 memcpy (buf, (const char *) os->start + offset, count);
1175 spu_elf_open_builtin_lib (bfd **ovl_bfd, const struct _ovl_stream *stream)
1177 *ovl_bfd = bfd_openr_iovec ("builtin ovl_mgr",
1184 return *ovl_bfd != NULL;
1187 /* Fill in the ila and br for a stub. On the last stub for a group,
1188 write the stub that sets the overlay number too. */
1191 write_one_stub (struct bfd_hash_entry *bh, void *inf)
1193 struct spu_stub_hash_entry *ent = (struct spu_stub_hash_entry *) bh;
1194 struct spu_link_hash_table *htab = inf;
1195 asection *sec = htab->stub;
1196 asection *s = ent->target_section;
1200 val = ent->target_off + s->output_offset + s->output_section->vma;
1201 bfd_put_32 (sec->owner, ILA_79 + ((val << 7) & 0x01ffff80),
1202 sec->contents + ent->off);
1203 val = ent->delta + 4;
1204 bfd_put_32 (sec->owner, BR + ((val << 5) & 0x007fff80),
1205 sec->contents + ent->off + 4);
1207 /* If this is the last stub of this group, write stub2. */
1208 if (ent->delta == 0)
1210 bfd_put_32 (sec->owner, NOP,
1211 sec->contents + ent->off + 4);
1213 ovl = spu_elf_section_data (s->output_section)->ovl_index;
1214 bfd_put_32 (sec->owner, ILA_78 + ((ovl << 7) & 0x01ffff80),
1215 sec->contents + ent->off + 8);
1217 val = (htab->ovly_load->root.u.def.section->output_section->vma
1218 + htab->ovly_load->root.u.def.section->output_offset
1219 + htab->ovly_load->root.u.def.value
1220 - (sec->output_section->vma
1221 + sec->output_offset
1224 if (val + 0x20000 >= 0x40000)
1225 htab->stub_overflow = TRUE;
1227 bfd_put_32 (sec->owner, BR + ((val << 5) & 0x007fff80),
1228 sec->contents + ent->off + 12);
1231 if (htab->emit_stub_syms)
1233 struct elf_link_hash_entry *h;
1237 len1 = sizeof ("00000000.ovl_call.") - 1;
1238 len2 = strlen (ent->root.string);
1239 name = bfd_malloc (len1 + len2 + 1);
1242 memcpy (name, "00000000.ovl_call.", len1);
1243 memcpy (name + len1, ent->root.string, len2 + 1);
1244 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
1247 if (h->root.type == bfd_link_hash_new)
1249 h->root.type = bfd_link_hash_defined;
1250 h->root.u.def.section = sec;
1251 h->root.u.def.value = ent->off;
1252 h->size = (ent->delta == 0
1253 ? SIZEOF_STUB1 + SIZEOF_STUB2 : SIZEOF_STUB1);
1257 h->ref_regular_nonweak = 1;
1258 h->forced_local = 1;
1266 /* Define an STT_OBJECT symbol. */
1268 static struct elf_link_hash_entry *
1269 define_ovtab_symbol (struct spu_link_hash_table *htab, const char *name)
1271 struct elf_link_hash_entry *h;
1273 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
1277 if (h->root.type != bfd_link_hash_defined
1280 h->root.type = bfd_link_hash_defined;
1281 h->root.u.def.section = htab->ovtab;
1282 h->type = STT_OBJECT;
1285 h->ref_regular_nonweak = 1;
1290 (*_bfd_error_handler) (_("%B is not allowed to define %s"),
1291 h->root.u.def.section->owner,
1292 h->root.root.string);
1293 bfd_set_error (bfd_error_bad_value);
1300 /* Fill in all stubs and the overlay tables. */
1303 spu_elf_build_stubs (struct bfd_link_info *info, int emit_syms, asection *toe)
1305 struct spu_link_hash_table *htab = spu_hash_table (info);
1306 struct elf_link_hash_entry *h;
1312 htab->emit_stub_syms = emit_syms;
1313 htab->stub->contents = bfd_zalloc (htab->stub->owner, htab->stub->size);
1314 if (htab->stub->contents == NULL)
1317 h = elf_link_hash_lookup (&htab->elf, "__ovly_load", FALSE, FALSE, FALSE);
1318 htab->ovly_load = h;
1319 BFD_ASSERT (h != NULL
1320 && (h->root.type == bfd_link_hash_defined
1321 || h->root.type == bfd_link_hash_defweak)
1324 s = h->root.u.def.section->output_section;
1325 if (spu_elf_section_data (s)->ovl_index)
1327 (*_bfd_error_handler) (_("%s in overlay section"),
1328 h->root.u.def.section->owner);
1329 bfd_set_error (bfd_error_bad_value);
1333 /* Write out all the stubs. */
1334 bfd_hash_traverse (&htab->stub_hash_table, write_one_stub, htab);
1336 if (htab->stub_overflow)
1338 (*_bfd_error_handler) (_("overlay stub relocation overflow"));
1339 bfd_set_error (bfd_error_bad_value);
1343 htab->ovtab->contents = bfd_zalloc (htab->ovtab->owner, htab->ovtab->size);
1344 if (htab->ovtab->contents == NULL)
1347 /* Write out _ovly_table. */
1348 p = htab->ovtab->contents;
1349 obfd = htab->ovtab->output_section->owner;
1350 for (s = obfd->sections; s != NULL; s = s->next)
1352 unsigned int ovl_index = spu_elf_section_data (s)->ovl_index;
1356 unsigned int lo, hi, mid;
1357 unsigned long off = (ovl_index - 1) * 16;
1358 bfd_put_32 (htab->ovtab->owner, s->vma, p + off);
1359 bfd_put_32 (htab->ovtab->owner, (s->size + 15) & -16, p + off + 4);
1360 /* file_off written later in spu_elf_modify_program_headers. */
1366 mid = (lo + hi) >> 1;
1367 if (htab->ovl_region[2 * mid + 1]->vma
1368 + htab->ovl_region[2 * mid + 1]->size <= s->vma)
1370 else if (htab->ovl_region[2 * mid]->vma > s->vma)
1374 bfd_put_32 (htab->ovtab->owner, mid + 1, p + off + 12);
1378 BFD_ASSERT (lo < hi);
1382 /* Write out _ovly_buf_table. */
1383 p = htab->ovtab->contents + htab->num_overlays * 16;
1384 for (i = 0; i < htab->num_buf; i++)
1386 bfd_put_32 (htab->ovtab->owner, 0, p);
1390 h = define_ovtab_symbol (htab, "_ovly_table");
1393 h->root.u.def.value = 0;
1394 h->size = htab->num_overlays * 16;
1396 h = define_ovtab_symbol (htab, "_ovly_table_end");
1399 h->root.u.def.value = htab->num_overlays * 16;
1402 h = define_ovtab_symbol (htab, "_ovly_buf_table");
1405 h->root.u.def.value = htab->num_overlays * 16;
1406 h->size = htab->num_buf * 4;
1408 h = define_ovtab_symbol (htab, "_ovly_buf_table_end");
1411 h->root.u.def.value = htab->num_overlays * 16 + htab->num_buf * 4;
1414 h = define_ovtab_symbol (htab, "_EAR_");
1417 h->root.u.def.section = toe;
1418 h->root.u.def.value = 0;
1424 /* Apply RELOCS to CONTENTS of INPUT_SECTION from INPUT_BFD. */
1427 spu_elf_relocate_section (bfd *output_bfd,
1428 struct bfd_link_info *info,
1430 asection *input_section,
1432 Elf_Internal_Rela *relocs,
1433 Elf_Internal_Sym *local_syms,
1434 asection **local_sections)
1436 Elf_Internal_Shdr *symtab_hdr;
1437 struct elf_link_hash_entry **sym_hashes;
1438 Elf_Internal_Rela *rel, *relend;
1439 struct spu_link_hash_table *htab;
1440 bfd_boolean ret = TRUE;
1442 htab = spu_hash_table (info);
1443 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1444 sym_hashes = (struct elf_link_hash_entry **) (elf_sym_hashes (input_bfd));
1447 relend = relocs + input_section->reloc_count;
1448 for (; rel < relend; rel++)
1451 reloc_howto_type *howto;
1452 unsigned long r_symndx;
1453 Elf_Internal_Sym *sym;
1455 struct elf_link_hash_entry *h;
1456 const char *sym_name;
1459 bfd_reloc_status_type r;
1460 bfd_boolean unresolved_reloc;
1463 r_symndx = ELF32_R_SYM (rel->r_info);
1464 r_type = ELF32_R_TYPE (rel->r_info);
1465 howto = elf_howto_table + r_type;
1466 unresolved_reloc = FALSE;
1472 if (r_symndx < symtab_hdr->sh_info)
1474 sym = local_syms + r_symndx;
1475 sec = local_sections[r_symndx];
1476 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
1477 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1481 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1482 r_symndx, symtab_hdr, sym_hashes,
1484 unresolved_reloc, warned);
1485 sym_name = h->root.root.string;
1488 if (sec != NULL && elf_discarded_section (sec))
1490 /* For relocs against symbols from removed linkonce sections,
1491 or sections discarded by a linker script, we just want the
1492 section contents zeroed. Avoid any special processing. */
1493 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1499 if (info->relocatable)
1502 if (unresolved_reloc)
1504 (*_bfd_error_handler)
1505 (_("%B(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
1507 bfd_get_section_name (input_bfd, input_section),
1508 (long) rel->r_offset,
1514 /* If this symbol is in an overlay area, we may need to relocate
1515 to the overlay stub. */
1516 addend = rel->r_addend;
1517 if (needs_ovl_stub (sym_name, sec, input_section, htab,
1518 is_branch (contents + rel->r_offset)))
1521 struct spu_stub_hash_entry *sh;
1523 stub_name = spu_stub_name (sec, h, rel);
1524 if (stub_name == NULL)
1527 sh = (struct spu_stub_hash_entry *)
1528 bfd_hash_lookup (&htab->stub_hash_table, stub_name, FALSE, FALSE);
1531 relocation = (htab->stub->output_section->vma
1532 + htab->stub->output_offset
1539 r = _bfd_final_link_relocate (howto,
1543 rel->r_offset, relocation, addend);
1545 if (r != bfd_reloc_ok)
1547 const char *msg = (const char *) 0;
1551 case bfd_reloc_overflow:
1552 if (!((*info->callbacks->reloc_overflow)
1553 (info, (h ? &h->root : NULL), sym_name, howto->name,
1554 (bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
1558 case bfd_reloc_undefined:
1559 if (!((*info->callbacks->undefined_symbol)
1560 (info, sym_name, input_bfd, input_section,
1561 rel->r_offset, TRUE)))
1565 case bfd_reloc_outofrange:
1566 msg = _("internal error: out of range error");
1569 case bfd_reloc_notsupported:
1570 msg = _("internal error: unsupported relocation error");
1573 case bfd_reloc_dangerous:
1574 msg = _("internal error: dangerous error");
1578 msg = _("internal error: unknown error");
1582 if (!((*info->callbacks->warning)
1583 (info, msg, sym_name, input_bfd, input_section,
1594 /* Adjust _SPUEAR_ syms to point at their overlay stubs. */
1597 spu_elf_output_symbol_hook (struct bfd_link_info *info,
1598 const char *sym_name ATTRIBUTE_UNUSED,
1599 Elf_Internal_Sym *sym,
1600 asection *sym_sec ATTRIBUTE_UNUSED,
1601 struct elf_link_hash_entry *h)
1603 struct spu_link_hash_table *htab = spu_hash_table (info);
1605 if (!info->relocatable
1606 && htab->num_overlays != 0
1608 && (h->root.type == bfd_link_hash_defined
1609 || h->root.type == bfd_link_hash_defweak)
1611 && strncmp (h->root.root.string, "_SPUEAR_", 8) == 0)
1613 static Elf_Internal_Rela zero_rel;
1614 char *stub_name = spu_stub_name (h->root.u.def.section, h, &zero_rel);
1615 struct spu_stub_hash_entry *sh;
1617 if (stub_name == NULL)
1619 sh = (struct spu_stub_hash_entry *)
1620 bfd_hash_lookup (&htab->stub_hash_table, stub_name, FALSE, FALSE);
1625 = _bfd_elf_section_from_bfd_section (htab->stub->output_section->owner,
1626 htab->stub->output_section);
1627 sym->st_value = (htab->stub->output_section->vma
1628 + htab->stub->output_offset
1635 static int spu_plugin = 0;
1638 spu_elf_plugin (int val)
1643 /* Set ELF header e_type for plugins. */
1646 spu_elf_post_process_headers (bfd *abfd,
1647 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1651 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
1653 i_ehdrp->e_type = ET_DYN;
1657 /* We may add an extra PT_LOAD segment for .toe. We also need extra
1658 segments for overlays. */
1661 spu_elf_additional_program_headers (bfd *abfd, struct bfd_link_info *info)
1663 struct spu_link_hash_table *htab = spu_hash_table (info);
1664 int extra = htab->num_overlays;
1670 sec = bfd_get_section_by_name (abfd, ".toe");
1671 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
1677 /* Remove .toe section from other PT_LOAD segments and put it in
1678 a segment of its own. Put overlays in separate segments too. */
1681 spu_elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
1684 struct elf_segment_map *m;
1690 toe = bfd_get_section_by_name (abfd, ".toe");
1691 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1692 if (m->p_type == PT_LOAD && m->count > 1)
1693 for (i = 0; i < m->count; i++)
1694 if ((s = m->sections[i]) == toe
1695 || spu_elf_section_data (s)->ovl_index != 0)
1697 struct elf_segment_map *m2;
1700 if (i + 1 < m->count)
1702 amt = sizeof (struct elf_segment_map);
1703 amt += (m->count - (i + 2)) * sizeof (m->sections[0]);
1704 m2 = bfd_zalloc (abfd, amt);
1707 m2->count = m->count - (i + 1);
1708 memcpy (m2->sections, m->sections + i + 1,
1709 m2->count * sizeof (m->sections[0]));
1710 m2->p_type = PT_LOAD;
1718 amt = sizeof (struct elf_segment_map);
1719 m2 = bfd_zalloc (abfd, amt);
1722 m2->p_type = PT_LOAD;
1724 m2->sections[0] = s;
1734 /* Check that all loadable section VMAs lie in the range
1735 LO .. HI inclusive. */
1738 spu_elf_check_vma (bfd *abfd, bfd_vma lo, bfd_vma hi)
1740 struct elf_segment_map *m;
1743 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1744 if (m->p_type == PT_LOAD)
1745 for (i = 0; i < m->count; i++)
1746 if (m->sections[i]->size != 0
1747 && (m->sections[i]->vma < lo
1748 || m->sections[i]->vma > hi
1749 || m->sections[i]->vma + m->sections[i]->size - 1 > hi))
1750 return m->sections[i];
1755 /* Tweak phdrs before writing them out. */
1758 spu_elf_modify_program_headers (bfd *abfd, struct bfd_link_info *info)
1760 const struct elf_backend_data *bed;
1761 struct elf_obj_tdata *tdata;
1762 Elf_Internal_Phdr *phdr, *last;
1763 struct spu_link_hash_table *htab;
1770 bed = get_elf_backend_data (abfd);
1771 tdata = elf_tdata (abfd);
1773 count = tdata->program_header_size / bed->s->sizeof_phdr;
1774 htab = spu_hash_table (info);
1775 if (htab->num_overlays != 0)
1777 struct elf_segment_map *m;
1780 for (i = 0, m = elf_tdata (abfd)->segment_map; m; ++i, m = m->next)
1782 && (o = spu_elf_section_data (m->sections[0])->ovl_index) != 0)
1784 /* Mark this as an overlay header. */
1785 phdr[i].p_flags |= PF_OVERLAY;
1787 if (htab->ovtab != NULL && htab->ovtab->size != 0)
1789 bfd_byte *p = htab->ovtab->contents;
1790 unsigned int off = (o - 1) * 16 + 8;
1792 /* Write file_off into _ovly_table. */
1793 bfd_put_32 (htab->ovtab->owner, phdr[i].p_offset, p + off);
1798 /* Round up p_filesz and p_memsz of PT_LOAD segments to multiples
1799 of 16. This should always be possible when using the standard
1800 linker scripts, but don't create overlapping segments if
1801 someone is playing games with linker scripts. */
1803 for (i = count; i-- != 0; )
1804 if (phdr[i].p_type == PT_LOAD)
1808 adjust = -phdr[i].p_filesz & 15;
1811 && phdr[i].p_offset + phdr[i].p_filesz > last->p_offset - adjust)
1814 adjust = -phdr[i].p_memsz & 15;
1817 && phdr[i].p_filesz != 0
1818 && phdr[i].p_vaddr + phdr[i].p_memsz > last->p_vaddr - adjust
1819 && phdr[i].p_vaddr + phdr[i].p_memsz <= last->p_vaddr)
1822 if (phdr[i].p_filesz != 0)
1826 if (i == (unsigned int) -1)
1827 for (i = count; i-- != 0; )
1828 if (phdr[i].p_type == PT_LOAD)
1832 adjust = -phdr[i].p_filesz & 15;
1833 phdr[i].p_filesz += adjust;
1835 adjust = -phdr[i].p_memsz & 15;
1836 phdr[i].p_memsz += adjust;
1842 /* Arrange for our linker created section to be output. */
1845 spu_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED,
1846 Elf_Internal_Shdr *i_shdrp)
1850 sec = i_shdrp->bfd_section;
1852 && (sec->flags & SEC_LINKER_CREATED) != 0
1853 && sec->name != NULL
1854 && strcmp (sec->name, SPU_PTNOTE_SPUNAME) == 0)
1855 i_shdrp->contents = sec->contents;
1860 #define TARGET_BIG_SYM bfd_elf32_spu_vec
1861 #define TARGET_BIG_NAME "elf32-spu"
1862 #define ELF_ARCH bfd_arch_spu
1863 #define ELF_MACHINE_CODE EM_SPU
1864 /* This matches the alignment need for DMA. */
1865 #define ELF_MAXPAGESIZE 0x80
1866 #define elf_backend_rela_normal 1
1867 #define elf_backend_can_gc_sections 1
1869 #define bfd_elf32_bfd_reloc_type_lookup spu_elf_reloc_type_lookup
1870 #define bfd_elf32_bfd_reloc_name_lookup spu_elf_reloc_name_lookup
1871 #define elf_info_to_howto spu_elf_info_to_howto
1872 #define elf_backend_gc_mark_hook spu_elf_gc_mark_hook
1873 #define elf_backend_relocate_section spu_elf_relocate_section
1874 #define elf_backend_symbol_processing spu_elf_backend_symbol_processing
1875 #define elf_backend_link_output_symbol_hook spu_elf_output_symbol_hook
1876 #define bfd_elf32_new_section_hook spu_elf_new_section_hook
1877 #define bfd_elf32_bfd_link_hash_table_create spu_elf_link_hash_table_create
1878 #define bfd_elf32_bfd_link_hash_table_free spu_elf_link_hash_table_free
1880 #define elf_backend_additional_program_headers spu_elf_additional_program_headers
1881 #define elf_backend_modify_segment_map spu_elf_modify_segment_map
1882 #define elf_backend_modify_program_headers spu_elf_modify_program_headers
1883 #define elf_backend_post_process_headers spu_elf_post_process_headers
1884 #define elf_backend_section_processing spu_elf_section_processing
1885 #define elf_backend_special_sections spu_elf_special_sections
1887 #include "elf32-target.h"