/* PowerPC-specific support for 32-bit ELF
- Copyright (C) 1994-2014 Free Software Foundation, Inc.
+ Copyright (C) 1994-2015 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
/* This reloc does nothing. */
HOWTO (R_PPC_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_dont, /* complain_on_overflow */
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
+ unsigned int r_type;
+
/* Initialize howto table if not already done. */
if (!ppc_elf_howto_table[R_PPC_ADDR32])
ppc_elf_howto_init ();
- BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
- cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
+ r_type = ELF32_R_TYPE (dst->r_info);
+ if (r_type >= R_PPC_max)
+ {
+ (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ r_type = R_PPC_NONE;
+ }
+ cache_ptr->howto = ppc_elf_howto_table[r_type];
/* Just because the above assert didn't trigger doesn't mean that
ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
if (!cache_ptr->howto)
{
(*_bfd_error_handler) (_("%B: invalid relocation type %d"),
- abfd, ELF32_R_TYPE (dst->r_info));
+ abfd, r_type);
bfd_set_error (bfd_error_bad_value);
cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
return bfd_reloc_ok;
}
- if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
- return bfd_reloc_outofrange;
-
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
apuinfo_list_init ();
/* Read in the input sections contents. */
- for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
{
unsigned long datum;
*valp = sym->st_size;
}
- if ((abfd->flags & DYNAMIC) == 0
- && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
- || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
+ if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
+ || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
+ && (abfd->flags & DYNAMIC) == 0
+ && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
return TRUE;
case R_PPC_GOT_TPREL16_LO:
case R_PPC_GOT_TPREL16_HI:
case R_PPC_GOT_TPREL16_HA:
- if (!info->executable)
+ if (info->shared)
info->flags |= DF_STATIC_TLS;
tls_type = TLS_TLS | TLS_TPREL;
goto dogottls;
case R_PPC_TPREL16_LO:
case R_PPC_TPREL16_HI:
case R_PPC_TPREL16_HA:
- if (!info->executable)
+ if (info->shared)
info->flags |= DF_STATIC_TLS;
goto dodyn;
--secure-plt and we never see REL16 relocs. */
if (plt_type == PLT_UNSET)
plt_type = PLT_OLD;
- for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
if (is_ppc_elf (ibfd))
{
if (ppc_elf_tdata (ibfd)->has_rel16)
htab = ppc_elf_hash_table (info);
htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
FALSE, FALSE, TRUE);
+ if (htab->plt_type != PLT_NEW)
+ htab->params->no_tls_get_addr_opt = TRUE;
+
if (!htab->params->no_tls_get_addr_opt)
{
struct elf_link_hash_entry *opt, *tga;
notify relocate_section that optimization can be done, and
adjust got and plt refcounts. */
for (pass = 0; pass < 2; ++pass)
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
Elf_Internal_Sym *locsyms = NULL;
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
will go to this object, or will remain undefined. */
h->plt.plist = NULL;
h->needs_plt = 0;
+ h->pointer_equality_needed = 0;
}
else
{
+ /* Taking a function's address in a read/write section
+ doesn't require us to define the function symbol in the
+ executable on a plt call stub. A dynamic reloc can
+ be used instead. */
+ if (h->pointer_equality_needed
+ && h->type != STT_GNU_IFUNC
+ && !htab->is_vxworks
+ && !ppc_elf_hash_entry (h)->has_sda_refs
+ && !readonly_dynrelocs (h))
+ {
+ h->pointer_equality_needed = 0;
+ h->non_got_ref = 0;
+ }
+
/* After adjust_dynamic_symbol, non_got_ref set in the
non-shared case means that we have allocated space in
.dynbss for the symbol and thus dyn_relocs for this
relocations against this symbol to the PLT entry. Allow
dynamic relocs if the reference is weak, and the dynamic
relocs will not cause text relocation. */
- if (!h->ref_regular_nonweak
- && h->non_got_ref
- && h->type != STT_GNU_IFUNC
- && !htab->is_vxworks
- && !ppc_elf_hash_entry (h)->has_sda_refs
- && !readonly_dynrelocs (h))
+ else if (!h->ref_regular_nonweak
+ && h->non_got_ref
+ && h->type != STT_GNU_IFUNC
+ && !htab->is_vxworks
+ && !ppc_elf_hash_entry (h)->has_sda_refs
+ && !readonly_dynrelocs (h))
h->non_got_ref = 0;
}
return TRUE;
if (!h->non_got_ref)
return TRUE;
+ /* If -z nocopyreloc was given, we won't generate them either. */
+ if (info->nocopyreloc)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+
/* If we didn't find any dynamic relocs in read-only sections, then
we'll be keeping the dynamic relocs and avoiding the copy reloc.
We can't do this if there are any small data relocations. This
return TRUE;
}
+ /* Protected variables do not work with .dynbss. The copy in
+ .dynbss won't be used by the shared library with the protected
+ definition for the variable. Text relocations are preferable
+ to an incorrect program. */
+ if (h->protected_def)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
h->needs_copy = 1;
}
- return _bfd_elf_adjust_dynamic_copy (h, s);
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
\f
/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
sh->ref_regular_nonweak = 1;
sh->forced_local = 1;
sh->non_elf = 0;
+ sh->root.linker_def = 1;
}
return TRUE;
}
/* Set up .got offsets for local syms, and space for local dynamic
relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
}
+ if (info->emitrelocations)
+ {
+ struct elf_link_hash_entry *sda = htab->sdata[0].sym;
+
+ if (sda != NULL && sda->ref_regular)
+ sda->root.u.def.section->flags |= SEC_KEEP;
+ sda = htab->sdata[1].sym;
+ if (sda != NULL && sda->ref_regular)
+ sda->root.u.def.section->flags |= SEC_KEEP;
+ }
if (htab->glink != NULL
&& htab->glink->size != 0
sh->ref_regular_nonweak = 1;
sh->forced_local = 1;
sh->non_elf = 0;
+ sh->root.linker_def = 1;
}
sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
TRUE, FALSE, FALSE);
sh->ref_regular_nonweak = 1;
sh->forced_local = 1;
sh->non_elf = 0;
+ sh->root.linker_def = 1;
}
}
}
|| s == htab->sgotplt
|| s == htab->sbss
|| s == htab->dynbss
- || s == htab->dynsbss
- || s == htab->sdata[0].section
- || s == htab->sdata[1].section)
+ || s == htab->dynsbss)
{
/* Strip these too. */
}
+ else if (s == htab->sdata[0].section
+ || s == htab->sdata[1].section)
+ {
+ strip_section = (s->flags & SEC_KEEP) == 0;
+ }
else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
".rela"))
{
bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
addr = isec->output_section->vma + isec->output_offset;
- end_addr = addr + trampoff - 1;
+ end_addr = addr + trampoff;
addr &= -pagesize;
crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
if (crossings != 0)
/* Keep space aligned, to ensure the patch code itself does
not cross a page. Don't decrease size calculated on a
previous pass as otherwise we might never settle on a layout. */
- newsize = 15 - (end_addr & 15);
+ newsize = 15 - ((end_addr - 1) & 15);
newsize += crossings * 16;
if (relax_info->workaround_size < newsize)
{
+ R_PPC_GOT_TPREL16);
else
{
- bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
rel->r_offset -= d_offset;
+ bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
r_type = R_PPC_NONE;
}
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
&& branch_reloc_hash_match (input_bfd, rel + 1,
htab->tls_get_addr))
offset = rel[1].r_offset;
+ /* We read the low GOT_TLS insn because we need to keep
+ the destination reg. It may be something other than
+ the usual r3, and moved to r3 before the call by
+ intervening code. */
+ insn1 = bfd_get_32 (output_bfd,
+ contents + rel->r_offset - d_offset);
if ((tls_mask & tls_gd) != 0)
{
/* IE */
- insn1 = bfd_get_32 (output_bfd,
- contents + rel->r_offset - d_offset);
- insn1 &= (1 << 26) - 1;
+ insn1 &= (0x1f << 21) | (0x1f << 16);
insn1 |= 32 << 26; /* lwz */
if (offset != (bfd_vma) -1)
{
else
{
/* LE */
- insn1 = 0x3c620000; /* addis 3,2,0 */
+ insn1 &= 0x1f << 21;
+ insn1 |= 0x3c020000; /* addis r,2,0 */
if (tls_gd == 0)
{
/* Was an LD reloc. */
{
outrel.r_addend += relocation;
if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
- outrel.r_addend -= htab->elf.tls_sec->vma;
+ {
+ if (htab->elf.tls_sec == NULL)
+ outrel.r_addend = 0;
+ else
+ outrel.r_addend -= htab->elf.tls_sec->vma;
+ }
}
loc = rsec->contents;
loc += (rsec->reloc_count++
value = 1;
else if (tls_ty != 0)
{
- value -= htab->elf.tls_sec->vma + DTP_OFFSET;
- if (tls_ty == (TLS_TLS | TLS_TPREL))
- value += DTP_OFFSET - TP_OFFSET;
+ if (htab->elf.tls_sec == NULL)
+ value = 0;
+ else
+ {
+ value -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (tls_ty == (TLS_TLS | TLS_TPREL))
+ value += DTP_OFFSET - TP_OFFSET;
+ }
if (tls_ty == (TLS_TLS | TLS_GD))
{
case R_PPC_DTPREL16_LO:
case R_PPC_DTPREL16_HI:
case R_PPC_DTPREL16_HA:
- addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
break;
/* Relocations that may need to be propagated if this is a shared
bfd_put_32 (output_bfd, insn, p);
break;
}
- addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
/* The TPREL16 relocs shouldn't really be used in shared
libs as they will result in DT_TEXTREL being set, but
support them anyway. */
goto dodyn;
case R_PPC_TPREL32:
- addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
goto dodyn;
case R_PPC_DTPREL32:
- addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
goto dodyn;
case R_PPC_DTPMOD32:
unsigned int insn;
insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
- if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
- || (insn & (0x3f << 26)) == 24u << 26 /* ori */
- || (insn & (0x3f << 26)) == 26u << 26 /* xori */
- || (insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
+ if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
+ complain = complain_overflow_bitfield;
+ else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
+ || (insn & (0x3f << 26)) == 24u << 26 /* ori */
+ || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
complain = complain_overflow_unsigned;
}
if (howto->complain_on_overflow != complain)
#define ELF_MACHINE_CODE EM_PPC
#ifdef __QNXTARGET__
#define ELF_MAXPAGESIZE 0x1000
+#define ELF_COMMONPAGESIZE 0x1000
#else
#define ELF_MAXPAGESIZE 0x10000
+#define ELF_COMMONPAGESIZE 0x10000
#endif
#define ELF_MINPAGESIZE 0x1000
-#define ELF_COMMONPAGESIZE 0x1000
#define elf_info_to_howto ppc_elf_info_to_howto
#ifdef EM_CYGNUS_POWERPC
projects / deliverable / binutils-gdb.git / blobdiff