/* PowerPC-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
bfd_boolean written_address_p;
} elf_linker_section_pointers_t;
+struct ppc_elf_obj_tdata
+{
+ struct elf_obj_tdata elf;
+
+ /* A mapping from local symbols to offsets into the various linker
+ sections added. This is index by the symbol index. */
+ elf_linker_section_pointers_t **linker_section_pointers;
+};
+
+#define ppc_elf_tdata(bfd) \
+ ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
+
#define elf_local_ptr_offsets(bfd) \
- ((elf_linker_section_pointers_t **) \
- (elf_tdata (bfd)->linker_section_pointers))
+ (ppc_elf_tdata (bfd)->linker_section_pointers)
+
+/* Override the generic function because we store some extras. */
+
+static bfd_boolean
+ppc_elf_mkobject (bfd *abfd)
+{
+ bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
+ abfd->tdata.any = bfd_zalloc (abfd, amt);
+ if (abfd->tdata.any == NULL)
+ return FALSE;
+ return TRUE;
+}
/* The PPC linker needs to keep track of the number of relocs that it
decides to copy as dynamic relocs in check_relocs for each symbol.
elf_linker_section_t *sdata2;
asection *sbss;
- /* Short-cut to first output tls section. */
- asection *tls_sec;
-
/* Shortcut to .__tls_get_addr. */
struct elf_link_hash_entry *tls_get_addr;
/* Copy the extra info we tack onto an elf_link_hash_entry. */
static void
-ppc_elf_copy_indirect_symbol (struct elf_backend_data *bed,
+ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
struct elf_link_hash_entry *dir,
struct elf_link_hash_entry *ind)
{
if (ELIMINATE_COPY_RELOCS
&& ind->root.type != bfd_link_hash_indirect
- && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
- /* If called to transfer flags for a weakdef during processing
- of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
- We clear it ourselves for ELIMINATE_COPY_RELOCS. */
- dir->elf_link_hash_flags |=
- (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
- | ELF_LINK_HASH_REF_REGULAR
- | ELF_LINK_HASH_REF_REGULAR_NONWEAK));
+ && dir->dynamic_adjusted)
+ {
+ /* If called to transfer flags for a weakdef during processing
+ of elf_adjust_dynamic_symbol, don't copy non_got_ref.
+ We clear it ourselves for ELIMINATE_COPY_RELOCS. */
+ dir->ref_dynamic |= ind->ref_dynamic;
+ dir->ref_regular |= ind->ref_regular;
+ dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
+ dir->needs_plt |= ind->needs_plt;
+ }
else
_bfd_elf_link_hash_copy_indirect (bed, dir, ind);
}
}
}
\f
-/* This function handles relaxing for the PPC with option --mpc860c0[=<n>].
-
- The MPC860, revision C0 or earlier contains a bug in the die.
- If all of the following conditions are true, the next instruction
- to be executed *may* be treated as a no-op.
- 1/ A forward branch is executed.
- 2/ The branch is predicted as not taken.
- 3/ The branch is taken.
- 4/ The branch is located in the last 5 words of a page.
- (The EOP limit is 5 by default but may be specified as any value
- from 1-10.)
-
- Our software solution is to detect these problematic branches in a
- linker pass and modify them as follows:
- 1/ Unconditional branches - Since these are always predicted taken,
- there is no problem and no action is required.
- 2/ Conditional backward branches - No problem, no action required.
- 3/ Conditional forward branches - Ensure that the "inverse prediction
- bit" is set (ensure it is predicted taken).
- 4/ Conditional register branches - Ensure that the "y bit" is set
- (ensure it is predicted taken). */
-
-/* Sort sections by address. */
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
-static int
-ppc_elf_sort_rela (const void *arg1, const void *arg2)
-{
- const Elf_Internal_Rela * const *rela1 = arg1;
- const Elf_Internal_Rela * const *rela2 = arg2;
+static const int shared_stub_entry[] =
+ {
+ 0x7c0802a6, /* mflr 0 */
+ 0x429f0005, /* bcl 20, 31, .Lxxx */
+ 0x7d6802a6, /* mflr 11 */
+ 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
+ 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
+ 0x7c0803a6, /* mtlr 0 */
+ 0x7d6903a6, /* mtctr 11 */
+ 0x4e800420, /* bctr */
+ };
+
+static const int stub_entry[] =
+ {
+ 0x3d600000, /* lis 11,xxx@ha */
+ 0x396b0000, /* addi 11,11,xxx@l */
+ 0x7d6903a6, /* mtctr 11 */
+ 0x4e800420, /* bctr */
+ };
- /* Sort by offset. */
- return ((*rela1)->r_offset - (*rela2)->r_offset);
-}
static bfd_boolean
ppc_elf_relax_section (bfd *abfd,
struct bfd_link_info *link_info,
bfd_boolean *again)
{
-#define PAGESIZE 0x1000
+ struct one_fixup
+ {
+ struct one_fixup *next;
+ asection *tsec;
+ bfd_vma toff;
+ bfd_vma trampoff;
+ };
+ Elf_Internal_Shdr *symtab_hdr;
bfd_byte *contents = NULL;
- bfd_byte *free_contents = NULL;
+ Elf_Internal_Sym *isymbuf = NULL;
Elf_Internal_Rela *internal_relocs = NULL;
- Elf_Internal_Rela *free_relocs = NULL;
- Elf_Internal_Rela **rela_comb = NULL;
- int comb_curr, comb_count;
+ Elf_Internal_Rela *irel, *irelend;
+ struct one_fixup *fixups = NULL;
+ bfd_boolean changed;
+ struct ppc_elf_link_hash_table *ppc_info;
+ bfd_size_type trampoff;
- /* We never have to do this more than once per input section. */
*again = FALSE;
- /* If needed, initialize this section's cooked size. */
- if (isec->_cooked_size == 0)
- isec->_cooked_size = isec->_raw_size;
+ /* Nothing to do if there are no relocations. */
+ if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0)
+ return TRUE;
+
+ trampoff = (isec->size + 3) & (bfd_vma) -4;
+ /* Space for a branch around any trampolines. */
+ trampoff += 4;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ /* Get a copy of the native relocations. */
+ internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
+ link_info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_return;
- /* We're only interested in text sections which overlap the
- troublesome area at the end of a page. */
- if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size)
+ ppc_info = ppc_elf_hash_table (link_info);
+ irelend = internal_relocs + isec->reloc_count;
+
+ for (irel = internal_relocs; irel < irelend; irel++)
{
- bfd_vma dot, end_page, end_section;
- bfd_boolean section_modified;
+ unsigned long r_type = ELF32_R_TYPE (irel->r_info);
+ bfd_vma symaddr, reladdr, toff, roff;
+ asection *tsec;
+ struct one_fixup *f;
+ size_t insn_offset = 0;
+ bfd_vma max_branch_offset, val;
+ bfd_byte *hit_addr;
+ unsigned long t0;
+ unsigned char sym_type;
- /* Get the section contents. */
- /* Get cached copy if it exists. */
- if (elf_section_data (isec)->this_hdr.contents != NULL)
- contents = elf_section_data (isec)->this_hdr.contents;
- else
+ switch (r_type)
{
- /* Go get them off disk. */
- contents = bfd_malloc (isec->_raw_size);
- if (contents == NULL)
- goto error_return;
- free_contents = contents;
-
- if (! bfd_get_section_contents (abfd, isec, contents,
- (file_ptr) 0, isec->_raw_size))
- goto error_return;
+ case R_PPC_REL24:
+ case R_PPC_LOCAL24PC:
+ case R_PPC_PLTREL24:
+ max_branch_offset = 1 << 25;
+ break;
+
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ max_branch_offset = 1 << 15;
+ break;
+
+ default:
+ continue;
}
- comb_curr = 0;
- comb_count = 0;
- if (isec->reloc_count)
+ /* Get the value of the symbol referred to by the reloc. */
+ if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
{
- unsigned n;
- bfd_size_type amt;
-
- /* Get a copy of the native relocations. */
- internal_relocs
- = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
- link_info->keep_memory);
- if (internal_relocs == NULL)
- goto error_return;
- if (! link_info->keep_memory)
- free_relocs = internal_relocs;
-
- /* Setup a faster access method for the reloc info we need. */
- amt = isec->reloc_count;
- amt *= sizeof (Elf_Internal_Rela*);
- rela_comb = bfd_malloc (amt);
- if (rela_comb == NULL)
- goto error_return;
- for (n = 0; n < isec->reloc_count; ++n)
- {
- enum elf_ppc_reloc_type r_type;
+ /* A local symbol. */
+ Elf_Internal_Sym *isym;
- r_type = ELF32_R_TYPE (internal_relocs[n].r_info);
- if (r_type >= R_PPC_max)
+ /* Read this BFD's local symbols. */
+ if (isymbuf == NULL)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == 0)
goto error_return;
+ }
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
+ if (isym->st_shndx == SHN_UNDEF)
+ continue; /* We can't do anything with undefined symbols. */
+ else if (isym->st_shndx == SHN_ABS)
+ tsec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ tsec = bfd_com_section_ptr;
+ else
+ tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
- /* Prologue constants are sometimes present in the ".text"
- sections and they can be identified by their associated
- relocation. We don't want to process those words and
- some others which can also be identified by their
- relocations. However, not all conditional branches will
- have a relocation so we will only ignore words that
- 1) have a reloc, and 2) the reloc is not applicable to a
- conditional branch. The array rela_comb is built here
- for use in the EOP scan loop. */
- switch (r_type)
- {
- case R_PPC_ADDR14_BRNTAKEN:
- case R_PPC_REL14:
- case R_PPC_REL14_BRNTAKEN:
- /* We should check the instruction. */
- break;
- default:
- /* The word is not a conditional branch - ignore it. */
- rela_comb[comb_count++] = &internal_relocs[n];
- break;
- }
+ toff = isym->st_value;
+ sym_type = ELF_ST_TYPE (isym->st_info);
+ }
+ else
+ {
+ /* Global symbol handling. */
+ unsigned long indx;
+ struct elf_link_hash_entry *h;
+
+ indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
+
+ 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;
+
+ if (r_type == R_PPC_PLTREL24
+ && ppc_info->plt != NULL
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ tsec = ppc_info->plt;
+ toff = h->plt.offset;
+ }
+ else if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ tsec = h->root.u.def.section;
+ toff = h->root.u.def.value;
}
- if (comb_count > 1)
- qsort (rela_comb, (size_t) comb_count, sizeof (int),
- ppc_elf_sort_rela);
+ else
+ continue;
+
+ sym_type = h->type;
}
- /* Enumerate each EOP region that overlaps this section. */
- end_section = isec->vma + isec->_cooked_size;
- dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1;
- dot -= link_info->mpc860c0;
- section_modified = FALSE;
- /* Increment the start position if this section begins in the
- middle of its first EOP region. */
- if (dot < isec->vma)
- dot = isec->vma;
- for (;
- dot < end_section;
- dot += PAGESIZE, end_page += PAGESIZE)
+ /* If the branch and target are in the same section, you have
+ no hope of adding stubs. We'll error out later should the
+ branch overflow. */
+ if (tsec == isec)
+ continue;
+
+ /* There probably isn't any reason to handle symbols in
+ SEC_MERGE sections; SEC_MERGE doesn't seem a likely
+ attribute for a code section, and we are only looking at
+ branches. However, implement it correctly here as a
+ reference for other target relax_section functions. */
+ if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
{
- /* Check each word in this EOP region. */
- for (; dot < end_page; dot += 4)
+ /* At this stage in linking, no SEC_MERGE symbol has been
+ adjusted, so all references to such symbols need to be
+ passed through _bfd_merged_section_offset. (Later, in
+ relocate_section, all SEC_MERGE symbols *except* for
+ section symbols have been adjusted.)
+
+ gas may reduce relocations against symbols in SEC_MERGE
+ sections to a relocation against the section symbol when
+ the original addend was zero. When the reloc is against
+ a section symbol we should include the addend in the
+ offset passed to _bfd_merged_section_offset, since the
+ location of interest is the original symbol. On the
+ other hand, an access to "sym+addend" where "sym" is not
+ a section symbol should not include the addend; Such an
+ access is presumed to be an offset from "sym"; The
+ location of interest is just "sym". */
+ if (sym_type == STT_SECTION)
+ toff += irel->r_addend;
+
+ toff = _bfd_merged_section_offset (abfd, &tsec,
+ elf_section_data (tsec)->sec_info,
+ toff);
+
+ if (sym_type != STT_SECTION)
+ toff += irel->r_addend;
+ }
+ else
+ toff += irel->r_addend;
+
+ symaddr = tsec->output_section->vma + tsec->output_offset + toff;
+
+ roff = irel->r_offset;
+ reladdr = isec->output_section->vma + isec->output_offset + roff;
+
+ /* If the branch is in range, no need to do anything. */
+ if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
+ continue;
+
+ /* Look for an existing fixup to this address. */
+ for (f = fixups; f ; f = f->next)
+ if (f->tsec == tsec && f->toff == toff)
+ break;
+
+ if (f == NULL)
+ {
+ size_t size;
+ unsigned long stub_rtype;
+
+ val = trampoff - roff;
+ if (val >= max_branch_offset)
+ /* Oh dear, we can't reach a trampoline. Don't try to add
+ one. We'll report an error later. */
+ continue;
+
+ if (link_info->shared)
{
- bfd_vma isec_offset;
- unsigned long insn;
- bfd_boolean skip, modified;
-
- /* Don't process this word if there is a relocation for it
- and the relocation indicates the word is not a
- conditional branch. */
- skip = FALSE;
- isec_offset = dot - isec->vma;
- for (; comb_curr<comb_count; ++comb_curr)
- {
- bfd_vma r_offset;
+ size = 4 * ARRAY_SIZE (shared_stub_entry);
+ insn_offset = 12;
+ stub_rtype = R_PPC_RELAX32PC;
+ }
+ else
+ {
+ size = 4 * ARRAY_SIZE (stub_entry);
+ insn_offset = 0;
+ stub_rtype = R_PPC_RELAX32;
+ }
- r_offset = rela_comb[comb_curr]->r_offset;
- if (r_offset >= isec_offset)
- {
- if (r_offset == isec_offset) skip = TRUE;
- break;
- }
- }
- if (skip) continue;
-
- /* Check the current word for a problematic conditional
- branch. */
-#define BO0(insn) ((insn) & 0x02000000)
-#define BO2(insn) ((insn) & 0x00800000)
-#define BO4(insn) ((insn) & 0x00200000)
- insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset);
- modified = FALSE;
- if ((insn & 0xFc000000) == 0x40000000)
- {
- /* Instruction is BCx */
- if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
- {
- bfd_vma target;
-
- /* This branch is predicted as "normal".
- If this is a forward branch, it is problematic. */
- target = insn & 0x0000Fffc;
- target = (target ^ 0x8000) - 0x8000;
- if ((insn & 0x00000002) == 0)
- /* Convert to abs. */
- target += dot;
- if (target > dot)
- {
- /* Set the prediction bit. */
- insn |= 0x00200000;
- modified = TRUE;
- }
- }
- }
- else if ((insn & 0xFc00Fffe) == 0x4c000420)
- {
- /* Instruction is BCCTRx. */
- if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
- {
- /* This branch is predicted as not-taken.
- If this is a forward branch, it is problematic.
- Since we can't tell statically if it will branch
- forward, always set the prediction bit. */
- insn |= 0x00200000;
- modified = TRUE;
- }
- }
- else if ((insn & 0xFc00Fffe) == 0x4c000020)
- {
- /* Instruction is BCLRx */
- if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
- {
- /* This branch is predicted as not-taken.
- If this is a forward branch, it is problematic.
- Since we can't tell statically if it will branch
- forward, always set the prediction bit. */
- insn |= 0x00200000;
- modified = TRUE;
- }
- }
-#undef BO0
-#undef BO2
-#undef BO4
- if (modified)
- {
- bfd_put_32 (abfd, insn, contents + isec_offset);
- section_modified = TRUE;
- }
+ if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
+ != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
+ abort ();
+ if (tsec == ppc_info->plt)
+ stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
+
+ /* Hijack the old relocation. Since we need two
+ relocations for this use a "composite" reloc. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ stub_rtype);
+ irel->r_offset = trampoff + insn_offset;
+
+ /* Record the fixup so we don't do it again this section. */
+ f = bfd_malloc (sizeof (*f));
+ f->next = fixups;
+ f->tsec = tsec;
+ f->toff = toff;
+ f->trampoff = trampoff;
+ fixups = f;
+
+ trampoff += size;
+ }
+ else
+ {
+ val = f->trampoff - roff;
+ if (val >= max_branch_offset)
+ continue;
+
+ /* Nop out the reloc, since we're finalizing things here. */
+ irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
+ }
+
+ /* Get the section contents. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (isec)->this_hdr.contents != NULL)
+ contents = elf_section_data (isec)->this_hdr.contents;
+ else
+ {
+ /* Go get them off disk. */
+ if (!bfd_malloc_and_get_section (abfd, isec, &contents))
+ goto error_return;
}
}
- if (section_modified)
+
+ /* Fix up the existing branch to hit the trampoline. */
+ hit_addr = contents + roff;
+ switch (r_type)
{
- elf_section_data (isec)->this_hdr.contents = contents;
- free_contents = NULL;
+ case R_PPC_REL24:
+ case R_PPC_LOCAL24PC:
+ case R_PPC_PLTREL24:
+ t0 = bfd_get_32 (abfd, hit_addr);
+ t0 &= ~0x3fffffc;
+ t0 |= val & 0x3fffffc;
+ bfd_put_32 (abfd, t0, hit_addr);
+ break;
+
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ t0 = bfd_get_32 (abfd, hit_addr);
+ t0 &= ~0xfffc;
+ t0 |= val & 0xfffc;
+ bfd_put_32 (abfd, t0, hit_addr);
+ break;
}
}
- if (rela_comb != NULL)
+ /* Write out the trampolines. */
+ changed = fixups != NULL;
+ if (fixups != NULL)
{
- free (rela_comb);
- rela_comb = NULL;
+ const int *stub;
+ bfd_byte *dest;
+ bfd_vma val;
+ int i, size;
+
+ do
+ {
+ struct one_fixup *f = fixups;
+ fixups = fixups->next;
+ free (f);
+ }
+ while (fixups);
+
+ contents = bfd_realloc (contents, trampoff);
+ if (contents == NULL)
+ goto error_return;
+
+ isec->size = (isec->size + 3) & (bfd_vma) -4;
+ /* Branch around the trampolines. */
+ val = trampoff - isec->size + 0x48000000;
+ dest = contents + isec->size;
+ isec->size = trampoff;
+ bfd_put_32 (abfd, val, dest);
+ dest += 4;
+
+ if (link_info->shared)
+ {
+ stub = shared_stub_entry;
+ size = ARRAY_SIZE (shared_stub_entry);
+ }
+ else
+ {
+ stub = stub_entry;
+ size = ARRAY_SIZE (stub_entry);
+ }
+
+ i = 0;
+ while (dest < contents + trampoff)
+ {
+ bfd_put_32 (abfd, stub[i], dest);
+ i++;
+ if (i == size)
+ i = 0;
+ dest += 4;
+ }
+ BFD_ASSERT (i == 0);
}
- if (free_relocs != NULL)
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
{
- free (free_relocs);
- free_relocs = NULL;
+ if (! link_info->keep_memory)
+ free (isymbuf);
+ else
+ {
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+ }
}
- if (free_contents != NULL)
+ if (contents != NULL
+ && elf_section_data (isec)->this_hdr.contents != contents)
{
- if (! link_info->keep_memory)
- free (free_contents);
+ if (!changed && !link_info->keep_memory)
+ free (contents);
else
{
/* Cache the section contents for elf_link_input_bfd. */
elf_section_data (isec)->this_hdr.contents = contents;
}
- free_contents = NULL;
}
+ if (elf_section_data (isec)->relocs != internal_relocs)
+ {
+ if (!changed)
+ free (internal_relocs);
+ else
+ elf_section_data (isec)->relocs = internal_relocs;
+ }
+
+ *again = changed;
return TRUE;
error_return:
- if (rela_comb != NULL)
- free (rela_comb);
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
+ if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
+ free (isymbuf);
+ if (contents != NULL
+ && elf_section_data (isec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (isec)->relocs != internal_relocs)
+ free (internal_relocs);
return FALSE;
}
\f
return bfd_reloc_ok;
}
- if (reloc_entry->address > input_section->_cooked_size)
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
if (bfd_is_com_section (symbol->section))
{
error = TRUE;
(*_bfd_error_handler)
- (_("%s: compiled with -mrelocatable and linked with "
- "modules compiled normally"),
- bfd_archive_filename (ibfd));
+ (_("%B: compiled with -mrelocatable and linked with "
+ "modules compiled normally"), ibfd);
}
else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
&& (old_flags & EF_PPC_RELOCATABLE) != 0)
{
error = TRUE;
(*_bfd_error_handler)
- (_("%s: compiled normally and linked with "
- "modules compiled with -mrelocatable"),
- bfd_archive_filename (ibfd));
+ (_("%B: compiled normally and linked with "
+ "modules compiled with -mrelocatable"), ibfd);
}
/* The output is -mrelocatable-lib iff both the input files are. */
{
error = TRUE;
(*_bfd_error_handler)
- (_("%s: uses different e_flags (0x%lx) fields "
+ (_("%B: uses different e_flags (0x%lx) fields "
"than previous modules (0x%lx)"),
- bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
+ ibfd, (long) new_flags, (long) old_flags);
}
if (error)
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
if (lsect->rel_section)
- lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela);
+ lsect->rel_section->size += sizeof (Elf32_External_Rela);
}
else
{
output a R_<xxx>_RELATIVE reloc so that the
dynamic linker can adjust this GOT entry. */
BFD_ASSERT (lsect->rel_section != NULL);
- lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela);
+ lsect->rel_section->size += sizeof (Elf32_External_Rela);
}
}
linker_section_ptr->written_address_p = FALSE;
*ptr_linker_section_ptr = linker_section_ptr;
- linker_section_ptr->offset = lsect->section->_raw_size;
- lsect->section->_raw_size += 4;
+ linker_section_ptr->offset = lsect->section->size;
+ lsect->section->size += 4;
#ifdef DEBUG
fprintf (stderr,
"Create pointer in linker section %s, offset = %ld, section size = %ld\n",
lsect->name, (long) linker_section_ptr->offset,
- (long) lsect->section->_raw_size);
+ (long) lsect->section->size);
#endif
return TRUE;
if (! elf_hash_table (info)->dynamic_sections_created
|| (info->shared
&& info->symbolic
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
+ && h->def_regular))
{
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
asection *srel = lsect->rel_section;
Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL];
bfd_byte *erel;
- struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+ const struct elf_backend_data *bed;
unsigned int i;
BFD_ASSERT (srel != NULL);
+ bed = get_elf_backend_data (output_bfd);
for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
{
outrel[i].r_offset = (lsect->section->output_section->vma
{
elf_linker_section_t *lsect;
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
- asection *s;
+ asection *s, *sym_sec;
bfd_size_type amt;
flagword flags;
const char *name;
lsect->sym_offset = sym_offset;
/* See if the sections already exist. */
- s = bfd_get_section_by_name (htab->elf.dynobj, name);
+ sym_sec = s = bfd_get_section_by_name (htab->elf.dynobj, name);
if (s == NULL || (s->flags & flags) != flags)
{
s = bfd_make_section_anyway (htab->elf.dynobj, name);
if (s == NULL
|| !bfd_set_section_flags (htab->elf.dynobj, s, flags))
return NULL;
+ if (sym_sec == NULL)
+ sym_sec = s;
}
lsect->section = s;
&& !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
return NULL;
- s->_raw_size = align_power (s->_raw_size, 2);
+ s->size = align_power (s->size, 2);
#ifdef DEBUG
fprintf (stderr, "Creating section %s, current size = %ld\n",
- name, (long) s->_raw_size);
+ name, (long) s->size);
#endif
if (sym_name)
if ((bh == NULL || bh->type == bfd_link_hash_undefined)
&& !(_bfd_generic_link_add_one_symbol
- (info, abfd, sym_name, BSF_GLOBAL, s, sym_offset, NULL,
+ (info, abfd, sym_name, BSF_GLOBAL, sym_sec, sym_offset, NULL,
FALSE, get_elf_backend_data (abfd)->collect, &bh)))
return NULL;
h = (struct elf_link_hash_entry *) bh;
lsect->sym_hash = h;
if (info->shared
- && ! _bfd_elf_link_record_dynamic_symbol (info, h))
+ && ! bfd_elf_link_record_dynamic_symbol (info, h))
return NULL;
}
++ret;
s = bfd_get_section_by_name (abfd, ".sbss2");
- if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
+ if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->size > 0)
++ret;
s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
- if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
+ if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->size > 0)
++ret;
return ret;
}
-
-/* Modify the segment map if needed. */
-
-static bfd_boolean
-ppc_elf_modify_segment_map (bfd *abfd ATTRIBUTE_UNUSED)
-{
- return TRUE;
-}
\f
/* The powerpc .got has a blrl instruction in it. Mark it executable. */
htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
if (s == NULL
- || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
+ || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
return FALSE;
if (! info->shared)
/* Make sure we know what is going on here. */
htab = ppc_elf_hash_table (info);
BFD_ASSERT (htab->elf.dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
+ && (h->needs_plt
+ || h->u.weakdef != NULL
+ || (h->def_dynamic
+ && h->ref_regular
+ && !h->def_regular)));
/* Deal with function syms. */
if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ || h->needs_plt)
{
/* Clear procedure linkage table information for any symbol that
won't need a .plt entry. */
3. We know for certain that a call to this symbol
will go to this object, or will remain undefined. */
h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 0;
}
return TRUE;
}
/* 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->weakdef != NULL)
+ if (h->u.weakdef != NULL)
{
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->root.u.def.value;
+ 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;
if (ELIMINATE_COPY_RELOCS)
- h->elf_link_hash_flags
- = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
- | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
+ h->non_got_ref = h->u.weakdef->non_got_ref;
return TRUE;
}
/* If there are no references to this symbol that do not use the
GOT, we don't need to generate a copy reloc. */
- if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
+ if (!h->non_got_ref)
return TRUE;
if (ELIMINATE_COPY_RELOCS)
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
if (p == NULL)
{
- h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
+ h->non_got_ref = 0;
return TRUE;
}
}
else
srel = htab->relbss;
BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf32_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ srel->size += sizeof (Elf32_External_Rela);
+ h->needs_copy = 1;
}
/* We need to figure out the alignment required for this symbol. I
power_of_two = 4;
/* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
+ s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
{
if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
/* Define the symbol as being at this point in the section. */
h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
+ h->root.u.def.value = s->size;
/* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
+ s->size += h->size;
return TRUE;
}
\f
-/* This is the condition under which finish_dynamic_symbol will be
- called from elflink.h. If elflink.h doesn't call our
- finish_dynamic_symbol routine, we'll need to do something about
- initializing any .plt and .got entries in relocate_section. */
-#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
- ((DYN) \
- && ((SHARED) \
- || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
- && ((H)->dynindx != -1 \
- || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
-
/* Of those relocs that might be copied as dynamic relocs, this macro
selects those that must be copied when linking a shared library,
even when the symbol is local. */
{
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1
- && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && !h->forced_local)
{
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
/* If this is the first .plt entry, make room for the special
first entry. */
- if (s->_raw_size == 0)
- s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
+ if (s->size == 0)
+ s->size += PLT_INITIAL_ENTRY_SIZE;
/* The PowerPC PLT is actually composed of two parts, the
first part is 2 words (for a load and a jump), and then
there is a remaining word available at the end. */
h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
+ (PLT_SLOT_SIZE
- * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE)
+ * ((s->size - PLT_INITIAL_ENTRY_SIZE)
/ PLT_ENTRY_SIZE)));
/* If this symbol is not defined in a regular file, and we
function pointers compare as equal between the normal
executable and the shared library. */
if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ && !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
/* Make room for this entry. After the 8192nd entry, room
for two entries is allocated. */
- s->_raw_size += PLT_ENTRY_SIZE;
- if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
+ s->size += PLT_ENTRY_SIZE;
+ if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
> PLT_NUM_SINGLE_ENTRIES)
- s->_raw_size += PLT_ENTRY_SIZE;
+ s->size += PLT_ENTRY_SIZE;
/* We also need to make an entry in the .rela.plt section. */
- htab->relplt->_raw_size += sizeof (Elf32_External_Rela);
+ htab->relplt->size += sizeof (Elf32_External_Rela);
}
else
{
h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 0;
}
}
else
{
h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 0;
}
eh = (struct ppc_elf_link_hash_entry *) h;
{
/* Make sure this symbol is output as a dynamic symbol. */
if (eh->elf.dynindx == -1
- && (eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && !eh->elf.forced_local)
{
- if (!bfd_elf32_link_record_dynamic_symbol (info, &eh->elf))
+ if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
return FALSE;
}
if (eh->tls_mask == (TLS_TLS | TLS_LD)
- && !(eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
+ && !eh->elf.def_dynamic)
/* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
eh->elf.got.offset = (bfd_vma) -1;
else
{
bfd_boolean dyn;
- eh->elf.got.offset = htab->got->_raw_size;
+ eh->elf.got.offset = htab->got->size;
if ((eh->tls_mask & TLS_TLS) != 0)
{
if ((eh->tls_mask & TLS_LD) != 0)
- htab->got->_raw_size += 8;
+ htab->got->size += 8;
if ((eh->tls_mask & TLS_GD) != 0)
- htab->got->_raw_size += 8;
+ htab->got->size += 8;
if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
- htab->got->_raw_size += 4;
+ htab->got->size += 4;
if ((eh->tls_mask & TLS_DTPREL) != 0)
- htab->got->_raw_size += 4;
+ htab->got->size += 4;
}
else
- htab->got->_raw_size += 4;
+ htab->got->size += 4;
dyn = htab->elf.dynamic_sections_created;
if ((info->shared
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
|| eh->elf.root.type != bfd_link_hash_undefweak))
{
/* All the entries we allocated need relocs. */
- htab->relgot->_raw_size
- += ((htab->got->_raw_size - eh->elf.got.offset) / 4
+ htab->relgot->size
+ += ((htab->got->size - eh->elf.got.offset) / 4
* sizeof (Elf32_External_Rela));
/* Except LD only needs one. */
if ((eh->tls_mask & TLS_LD) != 0)
- htab->relgot->_raw_size -= sizeof (Elf32_External_Rela);
+ htab->relgot->size -= sizeof (Elf32_External_Rela);
}
}
}
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak)
eh->dyn_relocs = NULL;
+
+ /* Make sure undefined weak symbols are output as a dynamic symbol
+ in PIEs. */
+ if (info->pie
+ && eh->dyn_relocs != NULL
+ && h->dynindx == -1
+ && h->root.type == bfd_link_hash_undefweak
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
}
else if (ELIMINATE_COPY_RELOCS)
{
symbols which turn out to need copy relocs or are not
dynamic. */
- if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ if (!h->non_got_ref
+ && h->def_dynamic
+ && !h->def_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->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && !h->forced_local)
{
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
- sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
+ sreloc->size += p->count * sizeof (Elf32_External_Rela);
}
return TRUE;
{
s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
if (htab->tlsld_got.refcount > 0)
{
- htab->tlsld_got.offset = htab->got->_raw_size;
- htab->got->_raw_size += 8;
+ htab->tlsld_got.offset = htab->got->size;
+ htab->got->size += 8;
if (info->shared)
- htab->relgot->_raw_size += sizeof (Elf32_External_Rela);
+ htab->relgot->size += sizeof (Elf32_External_Rela);
}
else
htab->tlsld_got.offset = (bfd_vma) -1;
}
else if (p->count != 0)
{
- elf_section_data (p->sec)->sreloc->_raw_size
+ elf_section_data (p->sec)->sreloc->size
+= p->count * sizeof (Elf32_External_Rela);
if ((p->sec->output_section->flags
& (SEC_READONLY | SEC_ALLOC))
htab->tlsld_got.offset. */
if (htab->tlsld_got.offset == (bfd_vma) -1)
{
- htab->tlsld_got.offset = s->_raw_size;
- s->_raw_size += 8;
+ htab->tlsld_got.offset = s->size;
+ s->size += 8;
if (info->shared)
- srel->_raw_size += sizeof (Elf32_External_Rela);
+ srel->size += sizeof (Elf32_External_Rela);
}
*local_got = (bfd_vma) -1;
}
else
{
- *local_got = s->_raw_size;
+ *local_got = s->size;
if ((*lgot_masks & TLS_TLS) != 0)
{
if ((*lgot_masks & TLS_GD) != 0)
- s->_raw_size += 8;
+ s->size += 8;
if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
- s->_raw_size += 4;
+ s->size += 4;
if ((*lgot_masks & TLS_DTPREL) != 0)
- s->_raw_size += 4;
+ s->size += 4;
}
else
- s->_raw_size += 4;
+ s->size += 4;
if (info->shared)
- srel->_raw_size += ((s->_raw_size - *local_got) / 4
- * sizeof (Elf32_External_Rela));
+ srel->size += ((s->size - *local_got) / 4
+ * sizeof (Elf32_External_Rela));
}
}
else
}
else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
{
- if (s->_raw_size == 0)
+ if (s->size == 0)
{
/* If we don't need this section, strip it from the
output file. This is mostly to handle .rela.bss and
continue;
}
- if (s->_raw_size == 0)
+ if (s->size == 0)
{
_bfd_strip_section_from_output (info, s);
continue;
}
/* Allocate memory for the section contents. */
- s->contents = bfd_zalloc (htab->elf.dynobj, s->_raw_size);
+ s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
if (s->contents == NULL)
return FALSE;
}
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_elf32_add_dynamic_entry (info, (TAG), (VAL))
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
if (info->executable)
{
return FALSE;
}
- if (htab->plt != NULL && htab->plt->_raw_size != 0)
+ if (htab->plt != NULL && htab->plt->size != 0)
{
if (!add_dynamic_entry (DT_PLTGOT, 0)
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
{
(*_bfd_error_handler)
- (_("%s: relocation %s cannot be used when making a shared object"),
- bfd_archive_filename (abfd),
+ (_("%B: relocation %s cannot be used when making a shared object"),
+ abfd,
ppc_elf_howto_table[r_type]->name);
bfd_set_error (bfd_error_bad_value);
}
return TRUE;
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
- bfd_get_section_name (abfd, sec),
- bfd_archive_filename (abfd));
+ _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
+ sec, abfd);
#endif
/* Initialize howto table if not already done. */
{
/* It does not make sense to have a procedure linkage
table entry for a local symbol. */
- (*_bfd_error_handler) (_("%s(%s+0x%lx): %s reloc against "
+ (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
"local symbol"),
- bfd_archive_filename (abfd),
- sec->name,
+ abfd,
+ sec,
(long) rel->r_offset,
ppc_elf_howto_table[r_type]->name);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 1;
h->plt.refcount++;
break;
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_PPC_GNU_VTINHERIT:
- if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
return FALSE;
break;
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
case R_PPC_GNU_VTENTRY:
- if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
h->plt.refcount++;
/* We may need a copy reloc too. */
- h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+ h->non_got_ref = 1;
}
dodyn:
|| (h != NULL
&& (! info->symbolic
|| h->root.type == bfd_link_hash_defweak
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))))
+ || !h->def_regular))))
|| (ELIMINATE_COPY_RELOCS
&& !info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)))
+ || !h->def_regular)))
{
struct ppc_elf_dyn_relocs *p;
struct ppc_elf_dyn_relocs **head;
struct ppc_elf_link_hash_entry *eh;
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;
eh = (struct ppc_elf_link_hash_entry *) h;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
return TRUE;
}
-/* Set htab->tls_sec and htab->tls_get_addr. */
+/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
-bfd_boolean
+asection *
ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
{
- asection *tls;
struct ppc_elf_link_hash_table *htab;
htab = ppc_elf_hash_table (info);
htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
FALSE, FALSE, TRUE);
- for (tls = obfd->sections; tls != NULL; tls = tls->next)
- if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
- == (SEC_THREAD_LOCAL | SEC_LOAD))
- break;
- htab->tls_sec = tls;
-
- return tls != NULL;
+ return _bfd_elf_tls_setup (obfd, info);
}
/* Run through all the TLS relocs looking for optimization
is_local = FALSE;
if (h == NULL
- || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
+ || !h->def_dynamic)
is_local = TRUE;
r_type = ELF32_R_TYPE (rel->r_info);
static bfd_boolean
ppc_elf_add_symbol_hook (bfd *abfd,
struct bfd_link_info *info,
- const Elf_Internal_Sym *sym,
+ Elf_Internal_Sym *sym,
const char **namep ATTRIBUTE_UNUSED,
flagword *flagsp ATTRIBUTE_UNUSED,
asection **secp,
+ reloc_index * sizeof (Elf32_External_Rela));
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ if (!h->def_regular)
{
/* Mark the symbol as undefined, rather than as defined in
the .plt section. Leave the value alone. */
Otherwise, the PLT entry would provide a definition for
the symbol even if the symbol wasn't defined anywhere,
and so the symbol would never be NULL. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
- == 0)
+ if (!h->ref_regular_nonweak)
sym->st_value = 0;
}
}
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ if (h->needs_copy)
{
asection *s;
Elf_Internal_Rela rela;
BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
break;
case DT_PLTRELSZ:
- dyn.d_un.d_val = htab->relplt->_raw_size;
+ dyn.d_un.d_val = htab->relplt->size;
break;
case DT_JMPREL:
bfd_boolean ret = TRUE;
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, "
- "%ld relocations%s\n",
- bfd_archive_filename (input_bfd),
- bfd_section_name(input_bfd, input_section),
- (long) input_section->reloc_count,
- (info->relocatable) ? " (relocatable)" : "");
+ _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
+ "%ld relocations%s",
+ input_bfd, input_section,
+ (long) input_section->reloc_count,
+ (info->relocatable) ? " (relocatable)" : "");
#endif
if (info->relocatable)
unresolved_reloc = FALSE;
warned = FALSE;
r_symndx = ELF32_R_SYM (rel->r_info);
+
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- sym_name = bfd_elf_local_sym_name (input_bfd, sym);
+ sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
- 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;
- sym_name = h->root.root.string;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
- relocation = 0;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- /* Set a flag that will be cleared later if we find a
- relocation value for this symbol. output_section
- is typically NULL for symbols satisfied by a shared
- library. */
- if (sec->output_section == NULL)
- unresolved_reloc = TRUE;
- else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- ;
- else if (!info->executable
- && !info->no_undefined
- && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- ;
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_offset, (!info->shared
- || info->no_undefined
- || ELF_ST_VISIBILITY (h->other)))))
- return FALSE;
- warned = TRUE;
- }
+ sym_name = h->root.root.string;
}
/* TLS optimizations. Replace instruction sequences and relocs
{
/* Was an LD reloc. */
r_symndx = 0;
- rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
- rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
+ rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
+ rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
}
r_type = R_PPC_TPREL16_HA;
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
branch_bit = BRANCH_PREDICT_BIT;
/* Fall thru */
- /* Branch not taken predicition relocations. */
+ /* Branch not taken prediction relocations. */
case R_PPC_ADDR14_BRNTAKEN:
case R_PPC_REL14_BRNTAKEN:
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
{
default:
(*_bfd_error_handler)
- (_("%s: unknown relocation type %d for symbol %s"),
- bfd_archive_filename (input_bfd), (int) r_type, sym_name);
+ (_("%B: unknown relocation type %d for symbol %s"),
+ input_bfd, (int) r_type, sym_name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
indx = 0;
if (tls_type == (TLS_TLS | TLS_LD)
&& (h == NULL
- || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
+ || !h->def_dynamic))
offp = &htab->tlsld_got.offset;
else if (h != NULL)
{
if (offp == &htab->tlsld_got.offset)
tls_m = TLS_LD;
else if (h == NULL
- || !(h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC))
+ || !h->def_dynamic)
tls_m &= ~TLS_LD;
/* We might have multiple got entries for this sym.
{
outrel.r_addend += relocation;
if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
- outrel.r_addend -= htab->tls_sec->vma;
+ outrel.r_addend -= htab->elf.tls_sec->vma;
}
loc = htab->relgot->contents;
loc += (htab->relgot->reloc_count++
value = 1;
else if (tls_ty != 0)
{
- value -= htab->tls_sec->vma + DTP_OFFSET;
+ value -= htab->elf.tls_sec->vma + DTP_OFFSET;
if (tls_ty == (TLS_TLS | TLS_TPREL))
value += DTP_OFFSET - TP_OFFSET;
{
if ((tls_mask & TLS_LD) != 0
&& !(h == NULL
- || !(h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC)))
+ || !h->def_dynamic))
off += 8;
if (tls_type != (TLS_TLS | TLS_GD))
{
got at entry m+n bears little relation to the entry m. */
if (addend != 0)
(*_bfd_error_handler)
- (_("%s(%s+0x%lx): non-zero addend on %s reloc against `%s'"),
- bfd_archive_filename (input_bfd),
- bfd_get_section_name (input_bfd, input_section),
+ (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
+ input_bfd,
+ input_section,
(long) rel->r_offset,
howto->name,
sym_name);
case R_PPC_DTPREL16_LO:
case R_PPC_DTPREL16_HI:
case R_PPC_DTPREL16_HA:
- addend -= htab->tls_sec->vma + DTP_OFFSET;
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
break;
/* Relocations that may need to be propagated if this is a shared
case R_PPC_TPREL16_LO:
case R_PPC_TPREL16_HI:
case R_PPC_TPREL16_HA:
- addend -= htab->tls_sec->vma + TP_OFFSET;
+ 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->tls_sec->vma + TP_OFFSET;
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
goto dodyn;
case R_PPC_DTPREL32:
- addend -= htab->tls_sec->vma + DTP_OFFSET;
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
goto dodyn;
case R_PPC_DTPMOD32:
case R_PPC_REL14_BRNTAKEN:
/* If these relocations are not to a named symbol, they can be
handled right here, no need to bother the dynamic linker. */
- if (h == NULL
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || SYMBOL_REFERENCES_LOCAL (info, h))
+ if (SYMBOL_REFERENCES_LOCAL (info, h)
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
break;
/* fall through */
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& (MUST_BE_DYN_RELOC (r_type)
- || (h != NULL
- && !SYMBOL_CALLS_LOCAL (info, h))))
+ || !SYMBOL_CALLS_LOCAL (info, h)))
|| (ELIMINATE_COPY_RELOCS
&& !info->shared
&& (input_section->flags & SEC_ALLOC) != 0
&& h != NULL
&& h->dynindx != -1
- && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ && !h->non_got_ref
+ && h->def_dynamic
+ && !h->def_regular))
{
int skip;
if (skip)
memset (&outrel, 0, sizeof outrel);
- else if (h != NULL
- && !SYMBOL_REFERENCES_LOCAL (info, h))
+ else if (!SYMBOL_REFERENCES_LOCAL (info, h))
{
unresolved_reloc = FALSE;
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
}
break;
+ case R_PPC_RELAX32PC_PLT:
+ case R_PPC_RELAX32_PLT:
+ BFD_ASSERT (h != NULL
+ && h->plt.offset != (bfd_vma) -1
+ && htab->plt != NULL);
+
+ relocation = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ + h->plt.offset);
+ if (r_type == R_PPC_RELAX32_PLT)
+ goto relax32;
+ /* Fall thru */
+
+ case R_PPC_RELAX32PC:
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset - 4);
+ /* Fall thru */
+
+ case R_PPC_RELAX32:
+ relax32:
+ {
+ unsigned long t0;
+ unsigned long t1;
+
+ t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
+ t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
+
+ /* We're clearing the bits for R_PPC_ADDR16_HA
+ and R_PPC_ADDR16_LO here. */
+ t0 &= ~0xffff;
+ t1 &= ~0xffff;
+
+ /* t0 is HA, t1 is LO */
+ relocation += addend;
+ t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
+ t1 |= relocation & 0xffff;
+
+ bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
+ bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
+ }
+ continue;
+
/* Indirect .sdata relocation. */
case R_PPC_EMB_SDAI16:
BFD_ASSERT (htab->sdata != NULL);
BFD_ASSERT (sec != NULL);
BFD_ASSERT (bfd_is_und_section (sec)
|| strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
- || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
+ || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
addend -= sec->output_section->vma + sec->output_offset + 0x8000;
break;
&& (name[5] == 0 || name[5] == '.'))))
{
(*_bfd_error_handler)
- (_("%s: the target (%s) of a %s relocation is "
+ (_("%B: the target (%s) of a %s relocation is "
"in the wrong output section (%s)"),
- bfd_archive_filename (input_bfd),
+ input_bfd,
sym_name,
howto->name,
name);
|| strncmp (name, ".sbss2", 6) == 0))
{
(*_bfd_error_handler)
- (_("%s: the target (%s) of a %s relocation is "
+ (_("%B: the target (%s) of a %s relocation is "
"in the wrong output section (%s)"),
- bfd_archive_filename (input_bfd),
+ input_bfd,
sym_name,
howto->name,
name);
else
{
(*_bfd_error_handler)
- (_("%s: the target (%s) of a %s relocation is "
+ (_("%B: the target (%s) of a %s relocation is "
"in the wrong output section (%s)"),
- bfd_archive_filename (input_bfd),
+ input_bfd,
sym_name,
howto->name,
name);
case R_PPC_EMB_RELST_HA:
case R_PPC_EMB_BIT_FLD:
(*_bfd_error_handler)
- (_("%s: relocation %s is not yet supported for symbol %s."),
- bfd_archive_filename (input_bfd),
+ (_("%B: relocation %s is not yet supported for symbol %s."),
+ input_bfd,
howto->name,
sym_name);
if (unresolved_reloc
&& !((input_section->flags & SEC_DEBUGGING) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
+ && h->def_dynamic))
{
(*_bfd_error_handler)
- (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
- bfd_archive_filename (input_bfd),
- bfd_get_section_name (input_bfd, input_section),
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
(long) rel->r_offset,
howto->name,
sym_name);
}
if (! (*info->callbacks->reloc_overflow) (info,
+ (h ? &h->root : NULL),
sym_name,
howto->name,
rel->r_addend,
else
{
(*_bfd_error_handler)
- (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
- bfd_archive_filename (input_bfd),
- bfd_get_section_name (input_bfd, input_section),
+ (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
+ input_bfd, input_section,
(long) rel->r_offset, howto->name, sym_name, (int) r);
ret = FALSE;
}
ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
- unsigned int raw_size;
+ unsigned int size;
switch (note->descsz)
{
/* pr_reg */
offset = 72;
- raw_size = 192;
+ size = 192;
break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- raw_size, note->descpos + offset);
+ size, note->descpos + offset);
}
static bfd_boolean
if (asec)
{
++ num_input_sections;
- output_section_size += asec->_raw_size;
+ output_section_size += asec->size;
}
}
if (asec == NULL)
continue;
- length = asec->_raw_size;
+ length = asec->size;
if (length < 24)
{
- error_message = _("corrupt or empty %s section in %s");
+ error_message = _("corrupt or empty %s section in %B");
goto fail;
}
if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
|| (bfd_bread (buffer + offset, length, ibfd) != length))
{
- error_message = _("unable to read in %s section from %s");
+ error_message = _("unable to read in %s section from %B");
goto fail;
}
/* Process the contents of the section. */
ptr = buffer + offset;
- error_message = _("corrupt %s section in %s");
+ error_message = _("corrupt %s section in %B");
/* Verify the contents of the header. Note - we have to
extract the values this way in order to allow for a
if (! bfd_set_section_size (abfd, asec, output_section_size))
ibfd = abfd,
- error_message = _("warning: unable to set size of %s section in %s");
+ error_message = _("warning: unable to set size of %s section in %B");
fail:
free (buffer);
if (error_message)
- (*_bfd_error_handler) (error_message, APUINFO_SECTION_NAME,
- bfd_archive_filename (ibfd));
+ (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
}
if (apuinfo_list_length () == 0)
return;
- length = asec->_raw_size;
+ length = asec->size;
if (length < 20)
return;
length += 4;
}
- if (length != asec->_raw_size)
+ if (length != asec->size)
(*_bfd_error_handler) (_("failed to compute new APUinfo section."));
if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
apuinfo_list_finish ();
}
+
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+ or (bfd_vma) -1 if it should not be included. */
+
+static bfd_vma
+ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
+ const asection *plt ATTRIBUTE_UNUSED,
+ const arelent *rel)
+{
+ return rel->address;
+}
+
+/* Add extra PPC sections -- Note, for now, make .sbss2 and
+ .PPC.EMB.sbss0 a normal section, and not a bss section so
+ that the linker doesn't crater when trying to make more than
+ 2 sections. */
+
+static struct bfd_elf_special_section const ppc_elf_special_sections[]=
+{
+ { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
+ { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
+ { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
+ { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
+ { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
+ { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
+ { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { NULL, 0, 0, 0, 0 }
+};
\f
#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
#define TARGET_LITTLE_NAME "elf32-powerpcle"
#define TARGET_BIG_NAME "elf32-powerpc"
#define ELF_ARCH bfd_arch_powerpc
#define ELF_MACHINE_CODE EM_PPC
+#ifdef __QNXTARGET__
+#define ELF_MAXPAGESIZE 0x1000
+#else
#define ELF_MAXPAGESIZE 0x10000
+#endif
+#define ELF_MINPAGESIZE 0x1000
#define elf_info_to_howto ppc_elf_info_to_howto
#ifdef EM_CYGNUS_POWERPC
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_got_header_size 12
-#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
#define elf_backend_rela_normal 1
+#define bfd_elf32_mkobject ppc_elf_mkobject
#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
#define elf_backend_fake_sections ppc_elf_fake_sections
#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
-#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
#define elf_backend_final_write_processing ppc_elf_final_write_processing
#define elf_backend_write_section ppc_elf_write_section
+#define elf_backend_special_sections ppc_elf_special_sections
+#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
#include "elf32-target.h"