/* SPARC-specific support for ELF
- Copyright (C) 2005-2018 Free Software Foundation, Inc.
+ Copyright (C) 2005-2019 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
reloc_howto_type *
-_bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+_bfd_sparc_elf_reloc_type_lookup (bfd *abfd,
bfd_reloc_code_real_type code)
{
/* We explicitly handle each relocation type in the switch
default:
break;
}
- bfd_set_error (bfd_error_bad_value);
- return NULL;
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
}
reloc_howto_type *
{
unsigned int i;
- for (i = 0;
- i < (sizeof (_bfd_sparc_elf_howto_table)
- / sizeof (_bfd_sparc_elf_howto_table[0]));
- i++)
+ for (i = 0; i < ARRAY_SIZE (_bfd_sparc_elf_howto_table); i++)
if (_bfd_sparc_elf_howto_table[i].name != NULL
&& strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
return &_bfd_sparc_elf_howto_table[i];
}
reloc_howto_type *
-_bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
+_bfd_sparc_elf_info_to_howto_ptr (bfd *abfd ATTRIBUTE_UNUSED,
+ unsigned int r_type)
{
switch (r_type)
{
default:
if (r_type >= (unsigned int) R_SPARC_max_std)
{
- _bfd_error_handler (_("invalid relocation type %d"), (int) r_type);
- r_type = R_SPARC_NONE;
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
}
return &_bfd_sparc_elf_howto_table[r_type];
}
#define SPARC_ELF_R_TYPE(r_info) \
((r_info) & 0xff)
-void
-_bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
+bfd_boolean
+_bfd_sparc_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
- cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
+ if ((cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (abfd, r_type)) == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ return TRUE;
}
\f
((EH)->elf.root.type == bfd_link_hash_undefweak \
&& bfd_link_executable (INFO) \
&& (_bfd_sparc_elf_hash_table (INFO)->interp == NULL \
- || !(EH)->has_got_reloc \
+ || !(INFO)->dynamic_undefined_weak \
|| (EH)->has_non_got_reloc \
- || !(INFO)->dynamic_undefined_weak))
+ || !(EH)->has_got_reloc))
/* SPARC ELF linker hash entry. */
#define GOT_TLS_IE 3
unsigned char tls_type;
- /* Symbol has GOT or PLT relocations. */
+ /* Symbol has GOT or PLT relocations. */
unsigned int has_got_reloc : 1;
+ /* Symbol has old-style, non-relaxable GOT relocations. */
+ unsigned int has_old_style_got_reloc : 1;
+
/* Symbol has non-GOT/non-PLT relocations in text sections. */
unsigned int has_non_got_reloc : 1;
bfd_byte *loc;
bed = get_elf_backend_data (abfd);
+ BFD_ASSERT (s->reloc_count * bed->s->sizeof_rela < s->size);
loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
bed->s->swap_reloca_out (abfd, rel, loc);
}
eind->dyn_relocs = NULL;
}
- if (ind->root.type == bfd_link_hash_indirect
- && dir->got.refcount <= 0)
+ if (ind->root.type == bfd_link_hash_indirect && dir->got.refcount <= 0)
{
edir->tls_type = eind->tls_type;
eind->tls_type = GOT_UNKNOWN;
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
/* xgettext:c-format */
- _bfd_error_handler (_("%B: bad symbol index: %d"), abfd, r_symndx);
+ _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
return FALSE;
}
&& r_type != R_SPARC_GOTDATA_OP_LOX10)
local_got_refcounts[r_symndx] += 1;
- old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
+ old_tls_type
+ = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
}
- /* If a TLS symbol is accessed using IE at least once, there is no point
- in using the dynamic model for it. */
+ /* If a TLS symbol is accessed using IE at least once, there is no
+ point in using the dynamic model for it. */
if (old_tls_type != tls_type)
{
if (old_tls_type == GOT_UNKNOWN)
{
_bfd_error_handler
/* xgettext:c-format */
- (_("%B: `%s' accessed both as normal and thread local symbol"),
+ (_("%pB: `%s' accessed both as normal and thread local symbol"),
abfd, h ? h->root.root.string : "<local>");
return FALSE;
}
return FALSE;
if (eh != NULL)
- eh->has_got_reloc = 1;
+ {
+ eh->has_got_reloc = 1;
+ if (r_type == R_SPARC_GOT10
+ || r_type == R_SPARC_GOT13
+ || r_type == R_SPARC_GOT22)
+ eh->has_old_style_got_reloc = 1;
+ }
break;
case R_SPARC_TLS_GD_CALL:
/* Essentially R_SPARC_WPLT30 relocs against __tls_get_addr. */
h = (struct elf_link_hash_entry *)
- bfd_link_hash_lookup (info->hash, "__tls_get_addr", TRUE,
+ bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
FALSE, TRUE);
+ BFD_ASSERT (h != NULL);
/* Fall through */
case R_SPARC_WPLT30:
if (h->plt.refcount <= 0
|| (h->type != STT_GNU_IFUNC
&& (SYMBOL_CALLS_LOCAL (info, h)
- || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak))))
+ || (h->root.type == bfd_link_hash_undefweak
+ && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))))
{
/* This case can occur if we saw a WPLT30 reloc in an input
file, but the symbol was never referred to by a dynamic
&& h->def_regular
&& h->ref_regular))
{
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local
+ /* Undefined weak syms won't yet be marked as dynamic. */
+ if (h->root.type == bfd_link_hash_undefweak
&& !resolved_to_zero
- && h->root.type == bfd_link_hash_undefweak)
+ && h->dynindx == -1
+ && !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
bfd_boolean dyn;
int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local
+ /* Undefined weak syms won't yet be marked as dynamic. */
+ if (h->root.type == bfd_link_hash_undefweak
&& !resolved_to_zero
- && h->root.type == bfd_link_hash_undefweak)
+ && h->dynindx == -1
+ && !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
s->size += SPARC_ELF_WORD_BYTES (htab);
dyn = htab->elf.dynamic_sections_created;
/* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
- R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
- global. No dynamic relocations are needed against resolved
- undefined weak symbols in an executable. */
+ R_SPARC_TLS_GD_{HI22,LO10} needs one if local and two if global. */
if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
|| tls_type == GOT_TLS_IE
|| h->type == STT_GNU_IFUNC)
htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
else if (tls_type == GOT_TLS_GD)
htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
- else if (((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- && !resolved_to_zero)
- || h->root.type != bfd_link_hash_undefweak)
- && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h))
+ else if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
+ /* Even if the symbol isn't dynamic, we may generate a
+ reloc for the dynamic linker in PIC mode. */
+ || (h->dynindx == -1
+ && !h->forced_local
+ && h->root.type != bfd_link_hash_undefweak
+ && bfd_link_pic (info)))
+ /* No dynamic relocations are needed against resolved
+ undefined weak symbols in an executable. */
+ && !(h->root.type == bfd_link_hash_undefweak
+ && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ || resolved_to_zero)))
htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
}
else
&& (h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_undefined))))
{
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local
+ /* Undefined weak syms won't yet be marked as dynamic. */
+ if (h->root.type == bfd_link_hash_undefweak
&& !resolved_to_zero
- && h->root.type == bfd_link_hash_undefweak)
+ && h->dynindx == -1
+ && !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
info->flags |= DF_TEXTREL;
info->callbacks->minfo
- (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
+ (_("%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. */
if (strcmp (p->name, ".got") == 0)
return FALSE;
- return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
+ return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
}
/* Set the sizes of the dynamic sections. */
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
{
info->flags |= DF_TEXTREL;
- info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
+ info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
p->sec->owner, p->sec);
}
}
if ((input_section->flags & SEC_ALLOC) == 0
|| h->plt.offset == (bfd_vma) -1)
- abort ();
+ {
+ /* If this is a SHT_NOTE section without SHF_ALLOC, treat
+ STT_GNU_IFUNC symbol as STT_FUNC. */
+ if (elf_section_type (input_section) == SHT_NOTE)
+ goto skip_ifunc;
+ abort ();
+ }
plt_sec = htab->elf.splt;
if (! plt_sec)
NULL);
_bfd_error_handler
/* xgettext:c-format */
- (_("%B: relocation %s against STT_GNU_IFUNC "
+ (_("%pB: relocation %s against STT_GNU_IFUNC "
"symbol `%s' isn't handled by %s"), input_bfd,
_bfd_sparc_elf_howto_table[r_type].name,
name, __FUNCTION__);
}
}
+ skip_ifunc:
eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
resolved_to_zero = eh && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
/* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
relocation = 0x80000000 | (insn & 0x3e07c01f);
bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
+
+ /* If the symbol is global but not dynamic, an .rela.* slot has
+ been allocated for it in the GOT so output R_SPARC_NONE here,
+ if it isn't also subject to another, old-style GOT relocation.
+ See also the handling of these GOT relocations just below. */
+ if (h != NULL
+ && h->dynindx == -1
+ && !h->forced_local
+ && h->root.type != bfd_link_hash_undefweak
+ && !eh->has_old_style_got_reloc
+ && (h->got.offset & 1) == 0
+ && bfd_link_pic (info))
+ {
+ asection *s = htab->elf.srelgot;
+ Elf_Internal_Rela outrel;
+
+ BFD_ASSERT (s != NULL);
+
+ memset (&outrel, 0, sizeof outrel);
+ sparc_elf_append_rela (output_bfd, s, &outrel);
+ h->got.offset |= 1;
+ }
}
continue;
}
off &= ~1;
else
{
+ /* If this symbol isn't dynamic in PIC mode, treat it
+ like a local symbol in PIC mode below. */
if (h->dynindx == -1
&& !h->forced_local
&& h->root.type != bfd_link_hash_undefweak
&& bfd_link_pic (info))
- {
- /* If this symbol isn't dynamic in PIC
- generate R_SPARC_RELATIVE here. */
- relative_reloc = TRUE;
- }
+ relative_reloc = TRUE;
else
SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
htab->elf.sgot->contents + off);
off &= ~1;
else
{
+ /* For a local symbol in PIC mode, we need to generate a
+ R_SPARC_RELATIVE reloc for the dynamic linker. */
if (bfd_link_pic (info))
relative_reloc = TRUE;
else
if (relative_reloc)
{
- asection *s;
+ asection *s = htab->elf.srelgot;
Elf_Internal_Rela outrel;
- /* We need to generate a R_SPARC_RELATIVE reloc
- for the dynamic linker. */
- s = htab->elf.srelgot;
BFD_ASSERT (s != NULL);
outrel.r_offset = (htab->elf.sgot->output_section->vma
in PIE. */
if ((bfd_link_pic (info)
&& (h == NULL
- || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- && !resolved_to_zero)
- || h->root.type != bfd_link_hash_undefweak))
+ || !(h->root.type == bfd_link_hash_undefweak
+ && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ || resolved_to_zero)))
&& (! howto->pc_relative
|| !SYMBOL_CALLS_LOCAL (info, h)))
|| (!bfd_link_pic (info)
|| !SYMBOLIC_BIND (info, h)
|| !h->def_regular))
{
- BFD_ASSERT (h->dynindx != -1);
outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
}
{
BFD_FAIL ();
_bfd_error_handler
- (_("%B: probably compiled without -fPIC?"),
+ (_("%pB: probably compiled without -fPIC?"),
input_bfd);
bfd_set_error (bfd_error_bad_value);
return FALSE;
rel->r_offset) != (bfd_vma) -1)
_bfd_error_handler
/* xgettext:c-format */
- (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
+ (_("%pB(%pA+%#" PRIx64 "): "
+ "unresolvable %s relocation against symbol `%s'"),
input_bfd,
input_section,
- rel->r_offset,
+ (uint64_t) rel->r_offset,
howto->name,
h->root.root.string);
struct _bfd_sparc_elf_link_hash_table *htab;
const struct elf_backend_data *bed;
struct _bfd_sparc_elf_link_hash_entry *eh;
- bfd_boolean local_undefweak;
+ bfd_boolean resolved_to_zero;
htab = _bfd_sparc_elf_hash_table (info);
BFD_ASSERT (htab != NULL);
/* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
resolved undefined weak symbols in executable so that their
references have value 0 at run-time. */
- local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
+ resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
if (h->plt.offset != (bfd_vma) -1)
{
loc += rela_index * bed->s->sizeof_rela;
bed->s->swap_reloca_out (output_bfd, &rela, loc);
- if (!local_undefweak
- && !h->def_regular)
+ if (!resolved_to_zero && !h->def_regular)
{
/* Mark the symbol as undefined, rather than as defined in
the .plt section. Leave the value alone. */
}
}
- /* Don't generate dynamic GOT relocation against undefined weak
- symbol in executable. */
+ /* Don't generate dynamic GOT relocation against resolved undefined weak
+ symbols in an executable. */
if (h->got.offset != (bfd_vma) -1
&& _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
&& _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE
- && !local_undefweak)
+ && !(h->root.type == bfd_link_hash_undefweak
+ && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ || resolved_to_zero)))
{
asection *sgot;
asection *srela;
+ (h->got.offset & ~(bfd_vma) 1));
return TRUE;
}
- else if (bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h))
+
+ if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
{
asection *sec = h->root.u.def.section;
if (h->type == STT_GNU_IFUNC)
BFD_ASSERT (htab != NULL);
dynobj = htab->elf.dynobj;
+ /* We arranged in size_dynamic_sections to put the STT_REGISTER
+ entries at the end of the dynlocal list, so they came at the end
+ of the local symbols in the symtab. Except that they aren't
+ STB_LOCAL, so we need to back up symtab->sh_info. */
+ if (ABI_64_P (output_bfd)
+ && elf_hash_table (info)->dynlocal)
+ {
+ asection *dynsymsec = bfd_get_linker_section (dynobj, ".dynsym");
+ struct elf_link_local_dynamic_entry *e;
+
+ for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
+ if (e->input_indx == -1)
+ break;
+ if (e)
+ elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
+ = e->dynindx;
+ }
+
sdyn = bfd_get_linker_section (dynobj, ".dynamic");
if (elf_hash_table (info)->dynamic_sections_created)