PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean elf64_alpha_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
+static void elf64_alpha_emit_dynrel
+ PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *,
+ bfd_vma, long, long, bfd_vma));
static bfd_boolean elf64_alpha_relocate_section_r
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset);
info->changed_contents = TRUE;
+ /* Reduce the use count on this got entry by one, possibly
+ eliminating it. */
+ if (--info->gotent->use_count == 0)
+ {
+ int sz = alpha_got_entry_size (r_type);
+ alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
+ if (!info->h)
+ alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
+ }
+
+ /* Smash the existing GOT relocation for its 16-bit immediate pair. */
switch (r_type)
{
case R_ALPHA_LITERAL:
irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type);
info->changed_relocs = TRUE;
- /* Reduce the use count on this got entry by one, possibly
- eliminating it. */
- if (--info->gotent->use_count == 0)
- {
- int sz = alpha_got_entry_size (r_type);
- alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
- if (!info->h)
- alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
- }
-
/* ??? Search forward through this basic block looking for insns
that use the target register. Stop after an insn modifying the
register is seen, or after a branch or call.
bfd_byte *pos[5];
unsigned int insn;
Elf_Internal_Rela *gpdisp, *hint;
- bfd_boolean dynamic, use_gottprel;
+ bfd_boolean dynamic, use_gottprel, pos1_unusable;
dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info);
/* ??? For LD relaxation, we need a symbol referencing the beginning
of the TLS segment. */
+ /* ??? The STN_UNDEF symbol (dynindex 0) works fine for this. Adjust
+ the code below to expect that. */
if (!is_gd)
return TRUE;
pos[2] = info->contents + irel[2].r_offset;
pos[3] = info->contents + gpdisp->r_offset;
pos[4] = pos[3] + gpdisp->r_addend;
+ pos1_unusable = FALSE;
- /* Only positions 0 and 1 are allowed to be out of order. */
- if (pos[1] < pos[0])
+ /* Generally, the positions are not allowed to be out of order, lest the
+ modified insn sequence have different register lifetimes. We can make
+ an exception when pos 1 is adjacent to pos 0. */
+ if (pos[1] + 4 == pos[0])
{
bfd_byte *tmp = pos[0];
pos[0] = pos[1];
pos[1] = tmp;
}
- if (pos[1] >= pos[2] || pos[2] >= pos[3] || pos[3] >= pos[4])
+ else if (pos[1] < pos[0])
+ pos1_unusable = TRUE;
+ if (pos[1] >= pos[2] || pos[2] >= pos[3])
return TRUE;
/* Reduce the use count on the LITERAL relocation. Do this before we
break;
}
else if (disp >= -(bfd_signed_vma) 0x80000000
- && disp < (bfd_signed_vma) 0x7fff8000)
+ && disp < (bfd_signed_vma) 0x7fff8000
+ && !pos1_unusable)
{
insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16);
bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
case R_ALPHA_TLSLDM:
return shared;
case R_ALPHA_LITERAL:
+ case R_ALPHA_GOTTPREL:
return dynamic || shared;
case R_ALPHA_GOTDTPREL:
- case R_ALPHA_GOTTPREL:
return dynamic;
/* May appear in data sections. */
case R_ALPHA_REFLONG:
case R_ALPHA_REFQUAD:
- return dynamic || shared;
- case R_ALPHA_SREL64:
case R_ALPHA_TPREL64:
- return dynamic;
+ return dynamic || shared;
/* Everything else is illegal. We'll issue an error during
relocate_section. */
return TRUE;
}
+/* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET)
+ into the next available slot in SREL. */
+
+static void
+elf64_alpha_emit_dynrel (abfd, info, sec, srel, offset, dynindx, rtype, addend)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec, *srel;
+ bfd_vma offset, addend;
+ long dynindx, rtype;
+{
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ BFD_ASSERT (srel != NULL);
+
+ outrel.r_info = ELF64_R_INFO (dynindx, rtype);
+ outrel.r_addend = addend;
+
+ offset = _bfd_elf_section_offset (abfd, info, sec, offset);
+ if ((offset | 1) != (bfd_vma) -1)
+ outrel.r_offset = sec->output_section->vma + sec->output_offset + offset;
+ else
+ memset (&outrel, 0, sizeof (outrel));
+
+ loc = srel->contents;
+ loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (abfd, &outrel, loc);
+ BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
+ <= srel->_cooked_size);
+}
+
/* Relocate an Alpha ELF section for a relocatable link.
We don't have to change anything unless the reloc is against a section
RELATIVE reloc, otherwise it will be handled in
finish_dynamic_symbol. */
if (info->shared && !dynamic_symbol_p)
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
-
- BFD_ASSERT(srelgot != NULL);
-
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + gotent->got_offset);
- outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE);
- outrel.r_addend = value;
-
- loc = srelgot->contents;
- loc += srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- BFD_ASSERT (sizeof (Elf64_External_Rela)
- * srelgot->reloc_count
- <= srelgot->_cooked_size);
- }
+ elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot,
+ gotent->got_offset, 0,
+ R_ALPHA_RELATIVE, value);
}
value = (sgot->output_section->vma
case R_ALPHA_DTPREL64:
case R_ALPHA_TPREL64:
{
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
+ long dynindx, dyntype = r_type;
+ bfd_vma dynaddend;
/* Careful here to remember RELATIVE relocations for global
variables for symbolic shared objects. */
if (dynamic_symbol_p)
{
BFD_ASSERT(h->root.dynindx != -1);
- outrel.r_info = ELF64_R_INFO (h->root.dynindx, r_type);
- outrel.r_addend = addend;
+ dynindx = h->root.dynindx;
+ dynaddend = addend;
addend = 0, value = 0;
}
else if (r_type == R_ALPHA_DTPREL64)
else if (r_type == R_ALPHA_TPREL64)
{
BFD_ASSERT(tls_segment != NULL);
- value -= dtp_base;
- goto default_reloc;
+ if (!info->shared)
+ {
+ value -= tp_base;
+ goto default_reloc;
+ }
+ dynindx = 0;
+ dynaddend = value - dtp_base;
}
else if (info->shared
&& r_symndx != 0
h->root.root.root.string);
ret_val = FALSE;
}
- outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE);
- outrel.r_addend = value;
+ dynindx = 0;
+ dyntype = R_ALPHA_RELATIVE;
+ dynaddend = value;
}
else
goto default_reloc;
- BFD_ASSERT(srel != NULL);
-
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset);
- if ((outrel.r_offset | 1) != (bfd_vma) -1)
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- else
- memset (&outrel, 0, sizeof outrel);
-
- loc = srel->contents;
- loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
- <= srel->_cooked_size);
+ elf64_alpha_emit_dynrel (output_bfd, info, input_section,
+ srel, rel->r_offset, dynindx,
+ dyntype, dynaddend);
}
goto default_reloc;
DTPMOD64 reloc, otherwise it will be handled in
finish_dynamic_symbol. */
if (info->shared && !dynamic_symbol_p)
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
-
- BFD_ASSERT(srelgot != NULL);
-
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + gotent->got_offset);
- /* ??? Proper dynindx here. */
- outrel.r_info = ELF64_R_INFO (0, R_ALPHA_DTPMOD64);
- outrel.r_addend = 0;
-
- loc = srelgot->contents;
- loc += srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- BFD_ASSERT (sizeof (Elf64_External_Rela)
- * srelgot->reloc_count
- <= srelgot->_cooked_size);
- }
+ elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot,
+ gotent->got_offset, 0,
+ R_ALPHA_DTPMOD64, 0);
if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM)
value = 0;
else
{
BFD_ASSERT(tls_segment != NULL);
- value -= (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base);
+ if (r_type == R_ALPHA_GOTDTPREL)
+ value -= dtp_base;
+ else if (!info->shared)
+ value -= tp_base;
+ else
+ {
+ elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot,
+ gotent->got_offset, 0,
+ R_ALPHA_TPREL64,
+ value - dtp_base);
+ value = 0;
+ }
}
bfd_put_64 (output_bfd, value,
sgot->contents + gotent->got_offset);
sgot->contents + gotent->got_offset);
if (info->shared)
- {
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + gotent->got_offset);
- outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
- outrel.r_addend = plt_addr;
-
- loc = srel->contents;
- loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
- <= srel->_cooked_size);
- }
+ elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel,
+ gotent->got_offset, 0,
+ R_ALPHA_RELATIVE, plt_addr);
gotent = gotent->next;
}
{
/* Fill in the dynamic relocations for this symbol's .got entries. */
asection *srel;
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
struct alpha_elf_got_entry *gotent;
srel = bfd_get_section_by_name (dynobj, ".rela.got");
gotent = gotent->next)
{
asection *sgot;
- int r_type;
+ long r_type;
if (gotent->use_count == 0)
continue;
sgot = alpha_elf_tdata (gotent->gotobj)->got;
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + gotent->got_offset);
r_type = gotent->reloc_type;
switch (r_type)
abort ();
}
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
- outrel.r_addend = gotent->addend;
-
- loc = srel->contents;
- loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel,
+ gotent->got_offset, h->dynindx,
+ r_type, gotent->addend);
if (gotent->reloc_type == R_ALPHA_TLSGD)
- {
- outrel.r_offset += 8;
- outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_DTPREL64);
-
- loc = srel->contents;
- loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- }
-
- BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
- <= srel->_cooked_size);
+ elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel,
+ gotent->got_offset + 8, h->dynindx,
+ R_ALPHA_DTPREL64, gotent->addend);
}
}
projects / external / binutils.git / commitdiff