/* Convert load via the GOT slot to load immediate. */
-static bfd_boolean
-elf_i386_convert_load (bfd *abfd, asection *sec,
- struct bfd_link_info *link_info)
+bfd_boolean
+_bfd_i386_elf_convert_load (bfd *abfd, asection *sec,
+ struct bfd_link_info *link_info)
{
struct elf_x86_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
return FALSE;
}
-/* Set the sizes of the dynamic sections. */
-
-static bfd_boolean
-elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
-{
- struct elf_x86_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- bfd_boolean relocs;
- bfd *ibfd;
-
- htab = elf_x86_hash_table (info, I386_ELF_DATA);
- if (htab == NULL)
- return FALSE;
- dynobj = htab->elf.dynobj;
- if (dynobj == NULL)
- abort ();
-
- /* Set up .got offsets for local syms, and space for local dynamic
- relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
- {
- bfd_signed_vma *local_got;
- bfd_signed_vma *end_local_got;
- char *local_tls_type;
- bfd_vma *local_tlsdesc_gotent;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- asection *srel;
-
- if (! is_x86_elf (ibfd, htab))
- continue;
-
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct elf_dyn_relocs *p;
-
- if (!elf_i386_convert_load (ibfd, s, info))
- return FALSE;
-
- for (p = ((struct elf_dyn_relocs *)
- elf_section_data (s)->local_dynrel);
- p != NULL;
- p = p->next)
- {
- if (!bfd_is_abs_section (p->sec)
- && bfd_is_abs_section (p->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (htab->is_vxworks
- && strcmp (p->sec->output_section->name,
- ".tls_vars") == 0)
- {
- /* Relocations in vxworks .tls_vars sections are
- handled specially by the loader. */
- }
- else if (p->count != 0)
- {
- srel = elf_section_data (p->sec)->sreloc;
- srel->size += p->count * sizeof (Elf32_External_Rel);
- if ((p->sec->output_section->flags & SEC_READONLY) != 0
- && (info->flags & DF_TEXTREL) == 0)
- {
- info->flags |= DF_TEXTREL;
- if ((info->warn_shared_textrel && bfd_link_pic (info))
- || info->error_textrel)
- /* xgettext:c-format */
- info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
- p->sec->owner, p->sec);
- }
- }
- }
- }
-
- local_got = elf_local_got_refcounts (ibfd);
- if (!local_got)
- continue;
-
- symtab_hdr = &elf_symtab_hdr (ibfd);
- locsymcount = symtab_hdr->sh_info;
- end_local_got = local_got + locsymcount;
- local_tls_type = elf_x86_local_got_tls_type (ibfd);
- local_tlsdesc_gotent = elf_x86_local_tlsdesc_gotent (ibfd);
- s = htab->elf.sgot;
- srel = htab->elf.srelgot;
- for (; local_got < end_local_got;
- ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
- {
- *local_tlsdesc_gotent = (bfd_vma) -1;
- if (*local_got > 0)
- {
- if (GOT_TLS_GDESC_P (*local_tls_type))
- {
- *local_tlsdesc_gotent = htab->elf.sgotplt->size
- - elf_x86_compute_jump_table_size (htab);
- htab->elf.sgotplt->size += 8;
- *local_got = (bfd_vma) -2;
- }
- if (! GOT_TLS_GDESC_P (*local_tls_type)
- || GOT_TLS_GD_P (*local_tls_type))
- {
- *local_got = s->size;
- s->size += 4;
- if (GOT_TLS_GD_P (*local_tls_type)
- || *local_tls_type == GOT_TLS_IE_BOTH)
- s->size += 4;
- }
- if (bfd_link_pic (info)
- || GOT_TLS_GD_ANY_P (*local_tls_type)
- || (*local_tls_type & GOT_TLS_IE))
- {
- if (*local_tls_type == GOT_TLS_IE_BOTH)
- srel->size += 2 * sizeof (Elf32_External_Rel);
- else if (GOT_TLS_GD_P (*local_tls_type)
- || ! GOT_TLS_GDESC_P (*local_tls_type))
- srel->size += sizeof (Elf32_External_Rel);
- if (GOT_TLS_GDESC_P (*local_tls_type))
- htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
- }
- }
- else
- *local_got = (bfd_vma) -1;
- }
- }
-
- if (htab->tls_ld_or_ldm_got.refcount > 0)
- {
- /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
- relocs. */
- htab->tls_ld_or_ldm_got.offset = htab->elf.sgot->size;
- htab->elf.sgot->size += 8;
- htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
- }
- else
- htab->tls_ld_or_ldm_got.offset = -1;
-
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (&htab->elf, _bfd_x86_elf_allocate_dynrelocs,
- info);
-
- /* Allocate .plt and .got entries, and space for local symbols. */
- htab_traverse (htab->loc_hash_table,
- _bfd_x86_elf_allocate_local_dynrelocs,
- info);
-
- /* For every jump slot reserved in the sgotplt, reloc_count is
- incremented. However, when we reserve space for TLS descriptors,
- it's not incremented, so in order to compute the space reserved
- for them, it suffices to multiply the reloc count by the jump
- slot size.
-
- PR ld/13302: We start next_irelative_index at the end of .rela.plt
- so that R_386_IRELATIVE entries come last. */
- if (htab->elf.srelplt)
- {
- htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
- htab->sgotplt_jump_table_size
- = elf_x86_compute_jump_table_size (htab);
- htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
- }
- else if (htab->elf.irelplt)
- htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
-
-
- if (htab->elf.sgotplt)
- {
- /* Don't allocate .got.plt section if there are no GOT nor PLT
- entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
- if ((htab->elf.hgot == NULL
- || !htab->elf.hgot->ref_regular_nonweak)
- && (htab->elf.sgotplt->size
- == get_elf_backend_data (output_bfd)->got_header_size)
- && (htab->elf.splt == NULL
- || htab->elf.splt->size == 0)
- && (htab->elf.sgot == NULL
- || htab->elf.sgot->size == 0)
- && (htab->elf.iplt == NULL
- || htab->elf.iplt->size == 0)
- && (htab->elf.igotplt == NULL
- || htab->elf.igotplt->size == 0))
- htab->elf.sgotplt->size = 0;
- }
-
- if (_bfd_elf_eh_frame_present (info))
- {
- if (htab->plt_eh_frame != NULL
- && htab->elf.splt != NULL
- && htab->elf.splt->size != 0
- && !bfd_is_abs_section (htab->elf.splt->output_section))
- htab->plt_eh_frame->size = htab->plt.eh_frame_plt_size;
-
- if (htab->plt_got_eh_frame != NULL
- && htab->plt_got != NULL
- && htab->plt_got->size != 0
- && !bfd_is_abs_section (htab->plt_got->output_section))
- htab->plt_got_eh_frame->size
- = htab->non_lazy_plt->eh_frame_plt_size;
-
- /* Unwind info for the second PLT and .plt.got sections are
- identical. */
- if (htab->plt_second_eh_frame != NULL
- && htab->plt_second != NULL
- && htab->plt_second->size != 0
- && !bfd_is_abs_section (htab->plt_second->output_section))
- htab->plt_second_eh_frame->size
- = htab->non_lazy_plt->eh_frame_plt_size;
- }
-
- /* We now have determined the sizes of the various dynamic sections.
- Allocate memory for them. */
- relocs = FALSE;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- bfd_boolean strip_section = TRUE;
-
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
-
- if (s == htab->elf.splt
- || s == htab->elf.sgot)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- /* We'd like to strip these sections if they aren't needed, but if
- we've exported dynamic symbols from them we must leave them.
- It's too late to tell BFD to get rid of the symbols. */
-
- if (htab->elf.hplt != NULL)
- strip_section = FALSE;
- }
- else if (s == htab->elf.sgotplt
- || s == htab->elf.iplt
- || s == htab->elf.igotplt
- || s == htab->plt_second
- || s == htab->plt_got
- || s == htab->plt_eh_frame
- || s == htab->plt_got_eh_frame
- || s == htab->plt_second_eh_frame
- || s == htab->elf.sdynbss
- || s == htab->elf.sdynrelro)
- {
- /* Strip these too. */
- }
- else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
- {
- if (s->size != 0
- && s != htab->elf.srelplt
- && s != htab->srelplt2)
- relocs = TRUE;
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- else
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
-
- if (s->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rel.bss and
- .rel.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- if (strip_section)
- s->flags |= SEC_EXCLUDE;
- continue;
- }
-
- if ((s->flags & SEC_HAS_CONTENTS) == 0)
- continue;
-
- /* Allocate memory for the section contents. We use bfd_zalloc
- here in case unused entries are not reclaimed before the
- section's contents are written out. This should not happen,
- but this way if it does, we get a R_386_NONE reloc instead
- of garbage. */
- s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return FALSE;
- }
-
- if (htab->plt_eh_frame != NULL
- && htab->plt_eh_frame->contents != NULL)
- {
- memcpy (htab->plt_eh_frame->contents,
- htab->plt.eh_frame_plt,
- htab->plt_eh_frame->size);
- bfd_put_32 (dynobj, htab->elf.splt->size,
- htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
- }
-
- if (htab->plt_got_eh_frame != NULL
- && htab->plt_got_eh_frame->contents != NULL)
- {
- memcpy (htab->plt_got_eh_frame->contents,
- htab->non_lazy_plt->eh_frame_plt,
- htab->plt_got_eh_frame->size);
- bfd_put_32 (dynobj, htab->plt_got->size,
- (htab->plt_got_eh_frame->contents
- + PLT_FDE_LEN_OFFSET));
- }
-
- if (htab->plt_second_eh_frame != NULL
- && htab->plt_second_eh_frame->contents != NULL)
- {
- memcpy (htab->plt_second_eh_frame->contents,
- htab->non_lazy_plt->eh_frame_plt,
- htab->plt_second_eh_frame->size);
- bfd_put_32 (dynobj, htab->plt_second->size,
- (htab->plt_second_eh_frame->contents
- + PLT_FDE_LEN_OFFSET));
- }
-
- if (htab->elf.dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in elf_i386_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
-#define add_dynamic_entry(TAG, VAL) \
- _bfd_elf_add_dynamic_entry (info, TAG, VAL)
-
- if (bfd_link_executable (info))
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return FALSE;
- }
-
- if (htab->elf.splt->size != 0)
- {
- /* DT_PLTGOT is used by prelink even if there is no PLT
- relocation. */
- if (!add_dynamic_entry (DT_PLTGOT, 0))
- return FALSE;
- }
-
- if (htab->elf.srelplt->size != 0)
- {
- if (!add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_REL)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return FALSE;
- }
-
- if (relocs)
- {
- if (!add_dynamic_entry (DT_REL, 0)
- || !add_dynamic_entry (DT_RELSZ, 0)
- || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
- return FALSE;
-
- /* If any dynamic relocs apply to a read-only section,
- then we need a DT_TEXTREL entry. */
- if ((info->flags & DF_TEXTREL) == 0)
- elf_link_hash_traverse (&htab->elf,
- _bfd_x86_elf_readonly_dynrelocs,
- info);
-
- if ((info->flags & DF_TEXTREL) != 0)
- {
- if (htab->readonly_dynrelocs_against_ifunc)
- {
- info->callbacks->einfo
- (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
-
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- }
- }
- if (htab->is_vxworks
- && !elf_vxworks_add_dynamic_entries (output_bfd, info))
- return FALSE;
- }
-#undef add_dynamic_entry
-
- return TRUE;
-}
-
/* Set the correct type for an x86 ELF section. We do this by the
section name, which is a hack, but ought to work. */
#define elf_backend_grok_psinfo elf_i386_grok_psinfo
#define elf_backend_reloc_type_class elf_i386_reloc_type_class
#define elf_backend_relocate_section elf_i386_relocate_section
-#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
#include "elf32-target.h"
projects / binutils-gdb.git / blobdiff