/* Count of overlay stubs needed in non-overlay area. */
unsigned int non_ovly_stub;
+ /* Pointer to the fixup section */
+ asection *sfixup;
+
/* Set on error. */
unsigned int stub_err : 1;
};
bfd_boolean
spu_elf_create_sections (struct bfd_link_info *info)
{
+ struct spu_link_hash_table *htab = spu_hash_table (info);
bfd *ibfd;
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
s->contents = data;
}
+ if (htab->params->emit_fixups)
+ {
+ asection *s;
+ flagword flags;
+ ibfd = info->input_bfds;
+ flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY;
+ s = bfd_make_section_anyway_with_flags (ibfd, ".fixup", flags);
+ if (s == NULL || !bfd_set_section_alignment (ibfd, s, 2))
+ return FALSE;
+ htab->sfixup = s;
+ }
+
return TRUE;
}
return count;
}
+/* Functions for adding fixup records to .fixup */
+
+#define FIXUP_RECORD_SIZE 4
+
+#define FIXUP_PUT(output_bfd,htab,index,addr) \
+ bfd_put_32 (output_bfd, addr, \
+ htab->sfixup->contents + FIXUP_RECORD_SIZE * (index))
+#define FIXUP_GET(output_bfd,htab,index) \
+ bfd_get_32 (output_bfd, \
+ htab->sfixup->contents + FIXUP_RECORD_SIZE * (index))
+
+/* Store OFFSET in .fixup. This assumes it will be called with an
+ increasing OFFSET. When this OFFSET fits with the last base offset,
+ it just sets a bit, otherwise it adds a new fixup record. */
+static void
+spu_elf_emit_fixup (bfd * output_bfd, struct bfd_link_info *info,
+ bfd_vma offset)
+{
+ struct spu_link_hash_table *htab = spu_hash_table (info);
+ asection *sfixup = htab->sfixup;
+ bfd_vma qaddr = offset & ~(bfd_vma) 15;
+ bfd_vma bit = ((bfd_vma) 8) >> ((offset & 15) >> 2);
+ if (sfixup->reloc_count == 0)
+ {
+ FIXUP_PUT (output_bfd, htab, 0, qaddr | bit);
+ sfixup->reloc_count++;
+ }
+ else
+ {
+ bfd_vma base = FIXUP_GET (output_bfd, htab, sfixup->reloc_count - 1);
+ if (qaddr != (base & ~(bfd_vma) 15))
+ {
+ if ((sfixup->reloc_count + 1) * FIXUP_RECORD_SIZE > sfixup->size)
+ (*_bfd_error_handler) (_("fatal error while creating .fixup"));
+ FIXUP_PUT (output_bfd, htab, sfixup->reloc_count, qaddr | bit);
+ sfixup->reloc_count++;
+ }
+ else
+ FIXUP_PUT (output_bfd, htab, sfixup->reloc_count - 1, base | bit);
+ }
+}
+
/* Apply RELOCS to CONTENTS of INPUT_SECTION from INPUT_BFD. */
static int
}
}
+ if (htab->params->emit_fixups && !info->relocatable
+ && (input_section->flags & SEC_ALLOC) != 0
+ && r_type == R_SPU_ADDR32)
+ {
+ bfd_vma offset;
+ offset = rel->r_offset + input_section->output_section->vma
+ + input_section->output_offset;
+ spu_elf_emit_fixup (output_bfd, info, offset);
+ }
+
if (unresolved_reloc)
;
else if (r_type == R_SPU_PPU32 || r_type == R_SPU_PPU64)
return TRUE;
}
+bfd_boolean
+spu_elf_size_sections (bfd * output_bfd, struct bfd_link_info *info)
+{
+ struct spu_link_hash_table *htab = spu_hash_table (info);
+ if (htab->params->emit_fixups)
+ {
+ asection *sfixup = htab->sfixup;
+ int fixup_count = 0;
+ bfd *ibfd;
+ size_t size;
+
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ asection *isec;
+
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
+ continue;
+
+ /* Walk over each section attached to the input bfd. */
+ for (isec = ibfd->sections; isec != NULL; isec = isec->next)
+ {
+ Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
+ bfd_vma base_end;
+
+ /* If there aren't any relocs, then there's nothing more
+ to do. */
+ if ((isec->flags & SEC_RELOC) == 0
+ || isec->reloc_count == 0)
+ continue;
+
+ /* Get the relocs. */
+ internal_relocs =
+ _bfd_elf_link_read_relocs (ibfd, isec, NULL, NULL,
+ info->keep_memory);
+ if (internal_relocs == NULL)
+ return FALSE;
+
+ /* 1 quadword can contain up to 4 R_SPU_ADDR32
+ relocations. They are stored in a single word by
+ saving the upper 28 bits of the address and setting the
+ lower 4 bits to a bit mask of the words that have the
+ relocation. BASE_END keeps track of the next quadword. */
+ irela = internal_relocs;
+ irelaend = irela + isec->reloc_count;
+ base_end = 0;
+ for (; irela < irelaend; irela++)
+ if (ELF32_R_TYPE (irela->r_info) == R_SPU_ADDR32
+ && irela->r_offset >= base_end)
+ {
+ base_end = (irela->r_offset & ~(bfd_vma) 15) + 16;
+ fixup_count++;
+ }
+ }
+ }
+
+ /* We always have a NULL fixup as a sentinel */
+ size = (fixup_count + 1) * FIXUP_RECORD_SIZE;
+ if (!bfd_set_section_size (output_bfd, sfixup, size))
+ return FALSE;
+ sfixup->contents = (bfd_byte *) bfd_zalloc (info->input_bfds, size);
+ if (sfixup->contents == NULL)
+ return FALSE;
+ }
+ return TRUE;
+}
+
#define TARGET_BIG_SYM bfd_elf32_spu_vec
#define TARGET_BIG_NAME "elf32-spu"
#define ELF_ARCH bfd_arch_spu
&spu_elf_load_ovl_mgr,
&spu_elf_open_overlay_script,
&spu_elf_relink,
- 0, ovly_normal, 0, 0, 0, 0, 0, 0, 0,
+ 0, ovly_normal, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0x3ffff,
1, 0, 16, 0, 0, 2000
};
lang_reset_memory_regions ();
}
+ if (is_spu_target ()
+ && !link_info.relocatable)
+ spu_elf_size_sections (link_info.output_bfd, &link_info);
+
gld${EMULATION_NAME}_before_allocation ();
}
#define OPTION_SPU_RESERVED_SPACE (OPTION_SPU_FIXED_SPACE + 1)
#define OPTION_SPU_EXTRA_STACK (OPTION_SPU_RESERVED_SPACE + 1)
#define OPTION_SPU_NO_AUTO_OVERLAY (OPTION_SPU_EXTRA_STACK + 1)
+#define OPTION_SPU_EMIT_FIXUPS (OPTION_SPU_NO_AUTO_OVERLAY + 1)
'
PARSE_AND_LIST_LONGOPTS='
{ "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
{ "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
{ "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
+ { "emit-fixups", optional_argument, NULL, OPTION_SPU_EMIT_FIXUPS },
'
PARSE_AND_LIST_OPTIONS='
break;
}
break;
+
+ case OPTION_SPU_EMIT_FIXUPS:
+ params.emit_fixups = 1;
+ break;
'
LDEMUL_AFTER_OPEN=spu_after_open
projects / binutils-gdb.git / commitdiff