/* Lattice Mico32-specific support for 32-bit ELF
- Copyright (C) 2008-2014 Free Software Foundation, Inc.
+ Copyright (C) 2008-2017 Free Software Foundation, Inc.
Contributed by Jon Beniston <jon@beniston.com>
This file is part of BFD, the Binary File Descriptor library.
struct elf_link_hash_table root;
/* Short-cuts to get to dynamic linker sections. */
- asection *sgot;
- asection *sgotplt;
- asection *srelgot;
asection *sfixup32;
- asection *splt;
- asection *srelplt;
asection *sdynbss;
asection *srelbss;
== LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL)
#define lm32fdpic_got_section(info) \
- (lm32_elf_hash_table (info)->sgot)
+ (lm32_elf_hash_table (info)->root.sgot)
#define lm32fdpic_gotrel_section(info) \
- (lm32_elf_hash_table (info)->srelgot)
+ (lm32_elf_hash_table (info)->root.srelgot)
#define lm32fdpic_fixup32_section(info) \
(lm32_elf_hash_table (info)->sfixup32)
return fixup_offset;
}
-/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
- shortcuts to them in our hash table. */
-
-static bfd_boolean
-create_got_section (bfd *dynobj, struct bfd_link_info *info)
-{
- struct elf_lm32_link_hash_table *htab;
- asection *s;
-
- /* This function may be called more than once. */
- s = bfd_get_linker_section (dynobj, ".got");
- if (s != NULL)
- return TRUE;
-
- htab = lm32_elf_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if (! _bfd_elf_create_got_section (dynobj, info))
- return FALSE;
-
- htab->sgot = bfd_get_linker_section (dynobj, ".got");
- htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
- htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got");
- if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
- abort ();
-
- return TRUE;
-}
-
/* Create .rofixup sections in DYNOBJ, and set up
shortcuts to them in our hash table. */
/* This reloc does nothing. */
HOWTO (R_LM32_NONE, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield,/* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LM32_NONE", /* name */
FALSE, /* partial_inplace */
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_LM32_max);
+ if (r_type >= (unsigned int) R_LM32_max)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%B: invalid LM32 reloc number: %d"), abfd, r_type);
+ r_type = 0;
+ }
cache_ptr->howto = &lm32_elf_howto_table[r_type];
}
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
Elf_Internal_Rela *rel, *relend;
struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info);
- bfd *dynobj;
bfd_vma *local_got_offsets;
asection *sgot;
if (htab == NULL)
return FALSE;
- dynobj = htab->root.dynobj;
local_got_offsets = elf_local_got_offsets (input_bfd);
- sgot = htab->sgot;
+ sgot = htab->root.sgot;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
rel, 1, relend, howto, 0, contents);
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
{
/* This is a relocatable link. We don't have to change
anything, unless the reloc is against a section symbol,
BFD_ASSERT (off != (bfd_vma) -1);
dyn = htab->root.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
- || (info->shared
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
+ bfd_link_pic (info),
+ h)
+ || (bfd_link_pic (info)
&& (info->symbolic
|| h->dynindx == -1
|| h->forced_local)
+ off);
}
- if (info->shared)
+ if (bfd_link_pic (info))
{
asection *srelgot;
Elf_Internal_Rela outrel;
/* We need to generate a R_LM32_RELATIVE reloc
for the dynamic linker. */
- srelgot = bfd_get_linker_section (dynobj,
- ".rela.got");
+ srelgot = htab->root.srelgot;
BFD_ASSERT (srelgot != NULL);
outrel.r_offset = (sgot->output_section->vma
/* Addend should be zero. */
if (rel->r_addend != 0)
- (*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT"));
+ _bfd_error_handler (_("internal error: addend should be zero for R_LM32_16_GOT"));
r = _bfd_final_link_relocate (howto,
input_bfd,
if ((h != NULL)
&& (h->root.type == bfd_link_hash_undefweak))
break;
- if (! ((*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
- return FALSE;
+ (*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
- if (! ((*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section,
- rel->r_offset, TRUE)))
- return FALSE;
+ (*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section, rel->r_offset, TRUE);
break;
case bfd_reloc_outofrange:
/* fall through */
common_error:
- if (!((*info->callbacks->warning)
- (info, msg, name, input_bfd, input_section,
- rel->r_offset)))
- return FALSE;
+ (*info->callbacks->warning) (info, msg, name, input_bfd,
+ input_section, rel->r_offset);
break;
}
}
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
-static bfd_boolean
-lm32_elf_gc_sweep_hook (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- asection *sec,
- const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
-{
- /* Update the got entry reference counts for the section being removed. */
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_signed_vma *local_got_refcounts;
- const Elf_Internal_Rela *rel, *relend;
-
- elf_section_data (sec)->local_dynrel = NULL;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
-
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h = NULL;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- }
-
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_LM32_16_GOT:
- if (h != NULL)
- {
- if (h->got.refcount > 0)
- h->got.refcount--;
- }
- else
- {
- if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx]--;
- }
- break;
-
- default:
- break;
- }
- }
- return TRUE;
-}
-
/* Look through the relocs for a section during the first phase. */
static bfd_boolean
struct elf_lm32_link_hash_table *htab;
bfd *dynobj;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
/* PR15323, ref flags aren't set for references in the same
object. */
- h->root.non_ir_ref = 1;
+ h->root.non_ir_ref_regular = 1;
}
/* Some relocs require a global offset table. */
- if (htab->sgot == NULL)
+ if (htab->root.sgot == NULL)
{
switch (r_type)
{
case R_LM32_GOTOFF_LO16:
if (dynobj == NULL)
htab->root.dynobj = dynobj = abfd;
- if (! create_got_section (dynobj, info))
+ if (!_bfd_elf_create_got_section (dynobj, info))
return FALSE;
break;
}
(Normal ELF doesn't). */
if (dynobj == NULL)
htab->root.dynobj = dynobj = abfd;
- if (! create_got_section (dynobj, info))
+ if (!_bfd_elf_create_got_section (dynobj, info))
return FALSE;
/* Create .rofixup section */
if (htab->sfixup32 == NULL)
dynobj = htab->root.dynobj;
- sgot = htab->sgotplt;
+ sgot = htab->root.sgotplt;
sdyn = bfd_get_linker_section (dynobj, ".dynamic");
if (htab->root.dynamic_sections_created)
break;
case DT_PLTGOT:
- s = htab->sgot->output_section;
+ s = htab->root.sgotplt;
goto get_vma;
case DT_JMPREL:
- s = htab->srelplt->output_section;
+ s = htab->root.srelplt;
get_vma:
- BFD_ASSERT (s != NULL);
- dyn.d_un.d_ptr = s->vma;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_PLTRELSZ:
- s = htab->srelplt->output_section;
- BFD_ASSERT (s != NULL);
+ s = htab->root.srelplt;
dyn.d_un.d_val = s->size;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
-
- case DT_RELASZ:
- /* My reading of the SVR4 ABI indicates that the
- procedure linkage table relocs (DT_JMPREL) should be
- included in the overall relocs (DT_RELA). This is
- what Solaris does. However, UnixWare can not handle
- that case. Therefore, we override the DT_RELASZ entry
- here to make it not include the JMPREL relocs. Since
- the linker script arranges for .rela.plt to follow all
- other relocation sections, we don't have to worry
- about changing the DT_RELA entry. */
- if (htab->srelplt != NULL)
- {
- s = htab->srelplt->output_section;
- dyn.d_un.d_val -= s->size;
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- break;
}
}
/* Fill in the first entry in the procedure linkage table. */
- splt = htab->splt;
+ splt = htab->root.splt;
if (splt && splt->size > 0)
{
- if (info->shared)
+ if (bfd_link_pic (info))
{
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
if (lm32fdpic_fixup32_section (info)->size
!= (lm32fdpic_fixup32_section (info)->reloc_count * 4))
{
- (*_bfd_error_handler)
- ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
+ _bfd_error_handler
+ ("LINKER BUG: .rofixup section size mismatch: size/4 %Ld != relocs %d",
lm32fdpic_fixup32_section (info)->size/4,
lm32fdpic_fixup32_section (info)->reloc_count);
return FALSE;
BFD_ASSERT (hend->u.def.value == value);
if (hend->u.def.value != value)
{
- (*_bfd_error_handler)
- ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value);
+ _bfd_error_handler
+ ("LINKER BUG: .rofixup section hend->u.def.value != value: %Ld != %Ld", hend->u.def.value, value);
return FALSE;
}
}
it up. */
BFD_ASSERT (h->dynindx != -1);
- splt = htab->splt;
- sgot = htab->sgotplt;
- srela = htab->srelplt;
+ splt = htab->root.splt;
+ sgot = htab->root.sgotplt;
+ srela = htab->root.srelplt;
BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
/* Get the index in the procedure linkage table which
got_offset = (plt_index + 3) * 4;
/* Fill in the entry in the procedure linkage table. */
- if (! info->shared)
+ if (! bfd_link_pic (info))
{
/* TODO */
}
/* This symbol has an entry in the global offset table. Set it
up. */
- sgot = htab->sgot;
- srela = htab->srelgot;
+ sgot = htab->root.sgot;
+ srela = htab->root.srelgot;
BFD_ASSERT (sgot != NULL && srela != NULL);
rela.r_offset = (sgot->output_section->vma
the symbol was forced to be local because of a version file.
The entry in the global offset table will already have been
initialized in the relocate_section function. */
- if (info->shared
+ if (bfd_link_pic (info)
&& (info->symbolic
|| h->dynindx == -1
|| h->forced_local)
/* Make sure we know what is going on here. */
BFD_ASSERT (dynobj != NULL
&& (h->needs_plt
- || h->u.weakdef != NULL
+ || h->is_weakalias
|| (h->def_dynamic
&& h->ref_regular
&& !h->def_regular)));
if (h->type == STT_FUNC
|| h->needs_plt)
{
- if (! info->shared
+ if (! bfd_link_pic (info)
&& !h->def_dynamic
&& !h->ref_dynamic
&& h->root.type != bfd_link_hash_undefweak
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
- if (h->u.weakdef != NULL)
+ if (h->is_weakalias)
{
- BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
- || h->u.weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->u.weakdef->root.u.def.section;
- h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ struct elf_link_hash_entry *def = weakdef (h);
+ BFD_ASSERT (def->root.type == bfd_link_hash_defined);
+ h->root.u.def.section = def->root.u.def.section;
+ h->root.u.def.value = def->root.u.def.value;
return TRUE;
}
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (info->shared)
+ if (bfd_link_pic (info))
return TRUE;
/* If there are no references to this symbol that do not use the
return FALSE;
}
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
+ if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
{
- asection *s = htab->splt;
+ asection *s = htab->root.splt;
/* If this is the first .plt entry, make room for the special
first entry. */
location in the .plt. This is required to make function
pointers compare as equal between the normal executable and
the shared library. */
- if (! info->shared
+ if (! bfd_link_pic (info)
&& !h->def_regular)
{
h->root.u.def.section = s;
/* We also need to make an entry in the .got.plt section, which
will be placed in the .got section by the linker script. */
- htab->sgotplt->size += 4;
+ htab->root.sgotplt->size += 4;
/* We also need to make an entry in the .rel.plt section. */
- htab->srelplt->size += sizeof (Elf32_External_Rela);
+ htab->root.srelplt->size += sizeof (Elf32_External_Rela);
}
else
{
return FALSE;
}
- s = htab->sgot;
+ s = htab->root.sgot;
h->got.offset = s->size;
s->size += 4;
dyn = htab->root.dynamic_sections_created;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
- htab->srelgot->size += sizeof (Elf32_External_Rela);
+ if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
+ htab->root.srelgot->size += sizeof (Elf32_External_Rela);
}
else
h->got.offset = (bfd_vma) -1;
space for pc-relative relocs that have become local due to symbol
visibility changes. */
- if (info->shared)
+ if (bfd_link_pic (info))
{
if (h->def_regular
&& (h->forced_local
if (htab->root.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (info->executable)
+ if (bfd_link_executable (info) && !info->nointerp)
{
s = bfd_get_linker_section (dynobj, ".interp");
BFD_ASSERT (s != NULL);
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
- s = htab->sgot;
- srel = htab->srelgot;
+ s = htab->root.sgot;
+ srel = htab->root.srelgot;
for (; local_got < end_local_got; ++local_got)
{
if (*local_got > 0)
{
*local_got = s->size;
s->size += 4;
- if (info->shared)
+ if (bfd_link_pic (info))
srel->size += sizeof (Elf32_External_Rela);
}
else
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
- if (s == htab->splt
- || s == htab->sgot
- || s == htab->sgotplt
+ if (s == htab->root.splt
+ || s == htab->root.sgot
+ || s == htab->root.sgotplt
|| s == htab->sdynbss)
{
/* Strip this section if we don't need it; see the
}
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
{
- if (s->size != 0 && s != htab->srelplt)
+ if (s->size != 0 && s != htab->root.srelplt)
relocs = TRUE;
/* We use the reloc_count field as a counter if we need
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (! add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
}
- if (htab->splt->size != 0)
+ if (htab->root.splt->size != 0)
{
if (! add_dynamic_entry (DT_PLTGOT, 0)
|| ! add_dynamic_entry (DT_PLTRELSZ, 0)
}
/* Size sections. */
- lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4;
+ lm32fdpic_fixup32_section (info)->size
+ = (r32_count + (htab->root.sgot->size / 4) - rgot_weak_count + 1) * 4;
if (lm32fdpic_fixup32_section (info)->size == 0)
lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE;
else
/* Make sure we have a GOT - For the case where we have a dynamic object
but none of the relocs in check_relocs */
- if (! create_got_section (abfd, info))
+ if (!_bfd_elf_create_got_section (abfd, info))
return FALSE;
if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL))
{
pltflags |= SEC_READONLY;
s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
- htab->splt = s;
+ htab->root.splt = s;
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
return FALSE;
h->type = STT_OBJECT;
htab->root.hplt = h;
- if (info->shared
+ if (bfd_link_pic (info)
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
bed->default_use_rela_p
? ".rela.plt" : ".rel.plt",
flags | SEC_READONLY);
- htab->srelplt = s;
+ htab->root.srelplt = s;
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
- if (htab->sgot == NULL
- && ! create_got_section (abfd, info))
+ if (htab->root.sgot == NULL
+ && !_bfd_elf_create_got_section (abfd, info))
return FALSE;
if (bed->want_dynbss)
be needed, we can discard it later. We will never need this
section when generating a shared object, since they do not use
copy relocs. */
- if (! info->shared)
+ if (! bfd_link_pic (info))
{
s = bfd_make_section_anyway_with_flags (abfd,
(bed->default_use_rela_p
static bfd_boolean
lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
{
- if (!info->relocatable)
+ if (!bfd_link_relocatable (info))
{
if (!bfd_elf_stack_segment_size (output_bfd, info,
"__stacksize", DEFAULT_STACK_SIZE))
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
#define elf_backend_plt_readonly 1
#define elf_backend_want_got_plt 1
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
+#define elf_backend_dtrel_excludes_plt 1
#define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
#define elf_backend_check_relocs lm32_elf_check_relocs
#define elf_backend_reloc_type_class lm32_elf_reloc_type_class
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