/* Lattice Mico32-specific support for 32-bit ELF
- Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ Copyright (C) 2008-2021 Free Software Foundation, Inc.
Contributed by Jon Beniston <jon@beniston.com>
This file is part of BFD, the Binary File Descriptor library.
static bfd_reloc_status_type lm32_elf_gprel_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-/* lm32 ELF linker hash entry. */
-
-struct elf_lm32_link_hash_entry
-{
- struct elf_link_hash_entry root;
-
- /* Track dynamic relocs copied for this symbol. */
- struct elf_dyn_relocs *dyn_relocs;
-};
-
/* lm32 ELF linker hash table. */
struct elf_lm32_link_hash_table
/* Get the lm32 ELF linker hash table from a link_info structure. */
#define lm32_elf_hash_table(p) \
- (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
- == LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL)
+ ((is_elf_hash_table ((p)->hash) \
+ && elf_hash_table_id (elf_hash_table (p)) == LM32_ELF_DATA) \
+ ? (struct elf_lm32_link_hash_table *) (p)->hash : NULL)
#define lm32fdpic_got_section(info) \
(lm32_elf_hash_table (info)->root.sgot)
struct weak_symbol_list *next;
};
-/* Create an entry in an lm32 ELF linker hash table. */
-
-static struct bfd_hash_entry *
-lm32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
-{
- struct elf_lm32_link_hash_entry *ret =
- (struct elf_lm32_link_hash_entry *) entry;
-
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (ret == NULL)
- ret = bfd_hash_allocate (table,
- sizeof (struct elf_lm32_link_hash_entry));
- if (ret == NULL)
- return NULL;
-
- /* Call the allocation method of the superclass. */
- ret = ((struct elf_lm32_link_hash_entry *)
- _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
- table, string));
- if (ret != NULL)
- {
- struct elf_lm32_link_hash_entry *eh;
-
- eh = (struct elf_lm32_link_hash_entry *) ret;
- eh->dyn_relocs = NULL;
- }
-
- return (struct bfd_hash_entry *) ret;
-}
-
/* Create an lm32 ELF linker hash table. */
static struct bfd_link_hash_table *
return NULL;
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
- lm32_elf_link_hash_newfunc,
- sizeof (struct elf_lm32_link_hash_entry),
+ _bfd_elf_link_hash_newfunc,
+ sizeof (struct elf_link_hash_entry),
LM32_ELF_DATA))
{
free (ret);
if (bfd_link_relocatable (info))
return TRUE;
- /* Don't do anything special with non-loaded, non-alloced sections.
- In particular, any relocs in such sections should not affect GOT
- and PLT reference counting (ie. we don't allow them to create GOT
- or PLT entries), there's no possibility or desire to optimize TLS
- relocs, and there's not much point in propagating relocs to shared
- libs that the dynamic linker won't relocate. */
- if ((sec->flags & SEC_ALLOC) == 0)
- return TRUE;
-
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
}
}
-/* Find dynamic relocs for H that apply to read-only sections. */
-
-static asection *
-readonly_dynrelocs (struct elf_link_hash_entry *h)
-{
- struct elf_dyn_relocs *p;
- struct elf_lm32_link_hash_entry *eh = (struct elf_lm32_link_hash_entry *) h;
-
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *s = p->sec->output_section;
-
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- return p->sec;
- }
- return NULL;
-}
-
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
/* If we don't find any dynamic relocs in read-only sections, then
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (0 && !readonly_dynrelocs (h))
+ if (0 && !_bfd_elf_readonly_dynrelocs (h))
{
h->non_got_ref = 0;
return TRUE;
{
struct bfd_link_info *info;
struct elf_lm32_link_hash_table *htab;
- struct elf_lm32_link_hash_entry *eh;
struct elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
if (htab == NULL)
return FALSE;
- eh = (struct elf_lm32_link_hash_entry *) h;
-
if (htab->root.dynamic_sections_created
&& h->plt.refcount > 0)
{
else
h->got.offset = (bfd_vma) -1;
- if (eh->dyn_relocs == NULL)
+ if (h->dyn_relocs == NULL)
return TRUE;
/* In the shared -Bsymbolic case, discard space allocated for
{
struct elf_dyn_relocs **pp;
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
+ for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
{
p->count -= p->pc_count;
p->pc_count = 0;
/* Also discard relocs on undefined weak syms with non-default
visibility. */
- if (eh->dyn_relocs != NULL
+ if (h->dyn_relocs != NULL
&& h->root.type == bfd_link_hash_undefweak)
{
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- eh->dyn_relocs = NULL;
+ h->dyn_relocs = NULL;
/* Make sure undefined weak symbols are output as a dynamic
symbol in PIEs. */
goto keep;
}
- eh->dyn_relocs = NULL;
+ h->dyn_relocs = NULL;
keep: ;
}
/* Finally, allocate space. */
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ for (p = h->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
sreloc->size += p->count * sizeof (Elf32_External_Rela);
return TRUE;
}
-/* Set DF_TEXTREL if we find any dynamic relocs that apply to
- read-only sections. */
-
-static bfd_boolean
-maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
-{
- asection *sec;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- sec = readonly_dynrelocs (h);
- if (sec != NULL)
- {
- struct bfd_link_info *info = (struct bfd_link_info *) info_p;
-
- info->flags |= DF_TEXTREL;
- info->callbacks->minfo
- (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
- sec->owner, h->root.root.string, sec);
-
- /* Not an error, just cut short the traversal. */
- return FALSE;
- }
- return TRUE;
-}
-
/* Set the sizes of the dynamic sections. */
static bfd_boolean
return FALSE;
}
- if (htab->root.dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in lm32_elf_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->root.splt->size != 0)
- {
- if (! add_dynamic_entry (DT_PLTGOT, 0)
- || ! add_dynamic_entry (DT_PLTRELSZ, 0)
- || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
- || ! add_dynamic_entry (DT_JMPREL, 0))
- return FALSE;
- }
-
- if (relocs)
- {
- if (! add_dynamic_entry (DT_RELA, 0)
- || ! add_dynamic_entry (DT_RELASZ, 0)
- || ! add_dynamic_entry (DT_RELAENT,
- sizeof (Elf32_External_Rela)))
- 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->root, maybe_set_textrel, info);
-
- if ((info->flags & DF_TEXTREL) != 0)
- {
- if (! add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- }
- }
- }
-#undef add_dynamic_entry
+ if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs))
+ return FALSE;
/* Allocate .rofixup section. */
if (IS_FDPIC (output_bfd))
return TRUE;
}
-/* Copy the extra info we tack onto an elf_link_hash_entry. */
-
-static void
-lm32_elf_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
-{
- struct elf_lm32_link_hash_entry * edir;
- struct elf_lm32_link_hash_entry * eind;
-
- edir = (struct elf_lm32_link_hash_entry *) dir;
- eind = (struct elf_lm32_link_hash_entry *) ind;
-
- if (eind->dyn_relocs != NULL)
- {
- if (edir->dyn_relocs != NULL)
- {
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
- /* Add reloc counts against the indirect sym to the direct sym
- list. Merge any entries against the same section. */
- for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
- {
- struct elf_dyn_relocs *q;
-
- for (q = edir->dyn_relocs; q != NULL; q = q->next)
- if (q->sec == p->sec)
- {
- q->pc_count += p->pc_count;
- q->count += p->count;
- *pp = p->next;
- break;
- }
- if (q == NULL)
- pp = &p->next;
- }
- *pp = edir->dyn_relocs;
- }
-
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
- }
-
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
-}
-
static bfd_boolean
lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
{
#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
-#define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
#define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
#define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
#define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
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