/* The symbol table entry, if any, that this was derived from. */
struct elf32_hppa_link_hash_entry *h;
- /* Where this stub is being called from. */
- asection *input_section;
+ /* Where this stub is being called from, or, in the case of combined
+ stub sections, the first input section in the group. */
+ asection *id_sec;
};
asection * (*add_stub_section) PARAMS ((const char *, asection *));
void (*layout_sections_again) PARAMS ((void));
- /* Arrays to keep track of which stub sections have been created. */
- asection **stub_section_created;
+ /* Array to keep track of which stub sections have been created, and
+ information on stub grouping. */
+ struct map_stub {
+ /* This is the section to which stubs in the group will be
+ attached. */
+ asection *link_sec;
+ /* The stub section. */
+ asection *stub_sec;
#if ! LONG_BRANCH_PIC_IN_SHLIB
- asection **reloc_section_created;
+ /* The stub section's reloc section. */
+ asection *reloc_sec;
#endif
- int first_init_sec;
- int first_fini_sec;
+ } *stub_group;
/* Short-cuts to get to dynamic linker sections. */
asection *sgot;
static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
PARAMS ((const asection *, const asection *,
struct elf32_hppa_link_hash_entry *,
- const Elf_Internal_Rela *, struct bfd_link_info *));
+ const Elf_Internal_Rela *,
+ struct elf32_hppa_link_hash_table *));
static struct elf32_hppa_stub_hash_entry *hppa_add_stub
- PARAMS ((const char *, asection *, unsigned int,
- struct bfd_link_info *));
+ PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
static enum elf32_hppa_stub_type hppa_type_of_stub
PARAMS ((asection *, const Elf_Internal_Rela *,
static bfd_reloc_status_type final_link_relocate
PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
- bfd_vma, struct bfd_link_info *, asection *,
+ bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
struct elf32_hppa_link_hash_entry *));
static boolean elf32_hppa_relocate_section
ret->target_section = NULL;
ret->stub_type = hppa_stub_long_branch;
ret->h = NULL;
- ret->input_section = NULL;
+ ret->id_sec = NULL;
}
return (struct bfd_hash_entry *) ret;
ret->multi_subspace = 0;
ret->add_stub_section = NULL;
ret->layout_sections_again = NULL;
- ret->stub_section_created = NULL;
-#if ! LONG_BRANCH_PIC_IN_SHLIB
- ret->reloc_section_created = NULL;
-#endif
- ret->first_init_sec = 0;
- ret->first_fini_sec = 0;
+ ret->stub_group = NULL;
ret->sgot = NULL;
ret->srelgot = NULL;
ret->splt = NULL;
creating the stub name takes a bit of time. */
static struct elf32_hppa_stub_hash_entry *
-hppa_get_stub_entry (input_section, sym_sec, hash, rel, info)
+hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink)
const asection *input_section;
const asection *sym_sec;
struct elf32_hppa_link_hash_entry *hash;
const Elf_Internal_Rela *rel;
- struct bfd_link_info *info;
+ struct elf32_hppa_link_hash_table *hplink;
{
struct elf32_hppa_stub_hash_entry *stub_entry;
+ const asection *id_sec;
+
+ /* If this input section is part of a group of sections sharing one
+ stub section, then use the id of the first section in the group.
+ Stub names need to include a section id, as there may well be
+ more than one stub used to reach say, printf, and we need to
+ distinguish between them. */
+ id_sec = hplink->stub_group[input_section->id].link_sec;
if (hash != NULL && hash->stub_cache != NULL
&& hash->stub_cache->h == hash
- && hash->stub_cache->input_section == input_section)
+ && hash->stub_cache->id_sec == id_sec)
{
stub_entry = hash->stub_cache;
}
else
{
- struct bfd_hash_table *stub_hash_table;
char *stub_name;
- stub_name = hppa_stub_name (input_section, sym_sec, hash, rel);
+ stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
if (stub_name == NULL)
return NULL;
- stub_hash_table = &hppa_link_hash_table (info)->stub_hash_table;
-
- stub_entry = hppa_stub_hash_lookup (stub_hash_table, stub_name,
- false, false);
+ stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
+ stub_name, false, false);
if (stub_entry == NULL)
{
if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak)
stub entry are initialised. */
static struct elf32_hppa_stub_hash_entry *
-hppa_add_stub (stub_name, section, sec_count, info)
+hppa_add_stub (stub_name, section, hplink)
const char *stub_name;
asection *section;
- unsigned int sec_count;
- struct bfd_link_info *info;
+ struct elf32_hppa_link_hash_table *hplink;
{
+ asection *link_sec;
asection *stub_sec;
struct elf32_hppa_stub_hash_entry *stub_entry;
- struct elf32_hppa_link_hash_table *hplink;
- hplink = hppa_link_hash_table (info);
- stub_sec = hplink->stub_section_created[sec_count];
+ link_sec = hplink->stub_group[section->id].link_sec;
+ stub_sec = hplink->stub_group[section->id].stub_sec;
if (stub_sec == NULL)
{
- if (strncmp (section->name, ".init", 5) == 0)
- stub_sec = hplink->stub_section_created[hplink->first_init_sec - 1];
- else if (strncmp (section->name, ".fini", 5) == 0)
- stub_sec = hplink->stub_section_created[hplink->first_fini_sec - 1];
-
+ stub_sec = hplink->stub_group[link_sec->id].stub_sec;
if (stub_sec == NULL)
{
size_t len;
char *s_name;
- len = strlen (section->name) + sizeof (STUB_SUFFIX);
+ len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
s_name = bfd_alloc (hplink->stub_bfd, len);
if (s_name == NULL)
return NULL;
- strcpy (s_name, section->name);
+ strcpy (s_name, link_sec->name);
strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
- stub_sec = (*hplink->add_stub_section) (s_name, section);
+ stub_sec = (*hplink->add_stub_section) (s_name, link_sec);
if (stub_sec == NULL)
return NULL;
+ hplink->stub_group[link_sec->id].stub_sec = stub_sec;
}
- hplink->stub_section_created[sec_count] = stub_sec;
+ hplink->stub_group[section->id].stub_sec = stub_sec;
}
/* Enter this entry into the linker stub hash table. */
stub_entry->stub_sec = stub_sec;
#if ! LONG_BRANCH_PIC_IN_SHLIB
- stub_entry->reloc_sec = hplink->reloc_section_created[sec_count];
+ stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec;
#endif
stub_entry->stub_offset = 0;
- stub_entry->input_section = section;
+ stub_entry->id_sec = link_sec;
return stub_entry;
}
{
max_branch_offset = (1 << (12-1)) << 2;
}
- else /* R_PARISC_PCREL22F */
+ else /* R_PARISC_PCREL22F. */
{
max_branch_offset = (1 << (22-1)) << 2;
}
if (need_entry & NEED_GOT)
{
/* Allocate space for a GOT entry, as well as a dynamic
- relocation for this entry. */
+ relocation for this entry. */
if (dynobj == NULL)
hplink->root.dynobj = dynobj = abfd;
struct elf_link_hash_entry *h;
struct bfd_link_info *info;
{
+ /* Note! We only want to remove these from the dynamic symbol
+ table. Therefore we do not set ELF_LINK_FORCED_LOCAL. */
if (h->type == STT_PARISC_MILLI)
- {
- h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
- elf32_hppa_hide_symbol(info, h);
- }
+ elf32_hppa_hide_symbol(info, h);
return true;
}
/* Make an entry in the .plt section. We know
the function doesn't have a plabel by the
- refcount */
+ refcount. */
s = hplink->splt;
h->plt.offset = s->_raw_size;
s->_raw_size += PLT_ENTRY_SIZE;
instruction. */
boolean
-elf32_hppa_size_stubs (stub_bfd, multi_subspace, info,
+elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace,
add_stub_section, layout_sections_again)
+ bfd *output_bfd;
bfd *stub_bfd;
- boolean multi_subspace;
struct bfd_link_info *info;
+ boolean multi_subspace;
asection * (*add_stub_section) PARAMS ((const char *, asection *));
void (*layout_sections_again) PARAMS ((void));
{
bfd *input_bfd;
asection *section;
+ asection **input_list, **list;
Elf_Internal_Sym *local_syms, **all_local_syms;
- unsigned int i, indx, bfd_count, sec_count;
+ unsigned int bfd_indx, bfd_count;
+ int top_id, top_index;
struct elf32_hppa_link_hash_table *hplink;
boolean stub_changed = 0;
+ boolean ret = 0;
hplink = hppa_link_hash_table (info);
hplink->add_stub_section = add_stub_section;
hplink->layout_sections_again = layout_sections_again;
- /* Count the number of input BFDs and the total number of input sections. */
- for (input_bfd = info->input_bfds, bfd_count = 0, sec_count = 0;
+ /* Count the number of input BFDs and find the top section id. */
+ for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
input_bfd != NULL;
input_bfd = input_bfd->link_next)
{
bfd_count += 1;
- sec_count += input_bfd->section_count;
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if (top_id < section->id)
+ top_id = section->id;
+ }
}
- hplink->stub_section_created
- = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count);
- if (hplink->stub_section_created == NULL)
+ hplink->stub_group
+ = (struct map_stub *) bfd_zmalloc (sizeof (struct map_stub) * (top_id + 1));
+ if (hplink->stub_group == NULL)
return false;
-#if ! LONG_BRANCH_PIC_IN_SHLIB
- hplink->reloc_section_created
- = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count);
- if (hplink->reloc_section_created == NULL)
- goto error_ret_free_stub;
-#endif
+ /* Now make a list of input sections for each output section.
+ We can't use output_bfd->section_count here as some sections may
+ have been removed, and _bfd_strip_section_from_output doesn't
+ renumber the indices. Sections may also be re-ordered, so the
+ last section index isn't necessarily the biggest. */
+ for (section = output_bfd->sections, top_index = 0;
+ section != NULL;
+ section = section->next)
+ {
+ if (top_index < section->index)
+ top_index = section->index;
+ }
+ input_list
+ = (asection **) bfd_zmalloc (sizeof (asection *) * (top_index + 1));
+ if (input_list == NULL)
+ return false;
+
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next)
+ {
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if (section->output_section != NULL
+ && section->output_section->owner == output_bfd)
+ {
+ list = input_list + section->output_section->index;
+ /* Steal the link_sec pointer for our list. */
+#define PREV_SEC(sec) (hplink->stub_group[(sec)->id].link_sec)
+ /* This happens to make the list in reverse order, which
+ is what we want. */
+ PREV_SEC (section) = *list;
+ *list = section;
+ }
+ }
+ }
+
+ /* See whether we can group stub sections together. Grouping stub
+ sections may result in fewer stubs. More importantly, we need to
+ put all .init* and .fini* stubs at the beginning of the .init or
+ .fini output sections respectively, because glibc splits the
+ _init and _fini functions into multiple parts. Putting a stub in
+ the middle of a function is not a good idea. */
+ list = input_list + output_bfd->section_count;
+ while (list-- != input_list)
+ {
+ asection *tail = *list;
+ while (tail != NULL)
+ {
+ asection *curr;
+ asection *prev;
+ bfd_size_type total;
+
+ curr = tail;
+ if (tail->_cooked_size)
+ total = tail->_cooked_size;
+ else
+ total = tail->_raw_size;
+ while ((prev = PREV_SEC (curr)) != NULL
+ && ((total += curr->output_offset - prev->output_offset)
+ < 250000))
+ curr = prev;
+
+ /* OK, the size from the start of CURR to the end is less
+ than 250000 bytes and thus can be handled by one stub
+ section. (or the tail section is itself larger than
+ 250000 bytes, in which case we may be toast.)
+ We should really be keeping track of the total size of
+ stubs added here, as stubs contribute to the final output
+ section size. That's a little tricky, and this way will
+ only break if stubs added total more than 12144 bytes, or
+ 1518 long branch stubs. It seems unlikely for more than
+ 1518 different functions to be called, especially from
+ code only 250000 bytes long. */
+ do
+ {
+ prev = PREV_SEC (tail);
+ /* Set up this stub group. */
+ hplink->stub_group[tail->id].link_sec = curr;
+ }
+ while (tail != curr && (tail = prev) != NULL);
+
+ /* But wait, there's more! Input sections up to 250000
+ bytes before the stub section can be handled by it too. */
+ total = 0;
+ while (prev != NULL
+ && ((total += tail->output_offset - prev->output_offset)
+ < 250000))
+ {
+ tail = prev;
+ prev = PREV_SEC (tail);
+ hplink->stub_group[tail->id].link_sec = curr;
+ }
+ tail = prev;
+ }
+ }
+ free (input_list);
/* We want to read in symbol extension records only once. To do this
we need to read in the local symbols in parallel and save them for
= (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *)
* bfd_count);
if (all_local_syms == NULL)
- goto error_ret_free_reloc;
+ return false;
/* Walk over all the input BFDs, swapping in local symbols.
If we are creating a shared library, create hash entries for the
export stubs. */
- for (input_bfd = info->input_bfds, indx = 0, sec_count = 0;
+ for (input_bfd = info->input_bfds, bfd_indx = 0;
input_bfd != NULL;
- input_bfd = input_bfd->link_next, indx++)
+ input_bfd = input_bfd->link_next, bfd_indx++)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Sym *isym;
- Elf32_External_Sym *ext_syms, *esym;
+ Elf32_External_Sym *ext_syms, *esym, *end_sy;
/* We'll need the symbol table in a second. */
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
{
goto error_ret_free_local;
}
- all_local_syms[indx] = local_syms;
+ all_local_syms[bfd_indx] = local_syms;
ext_syms = (Elf32_External_Sym *)
bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym));
if (ext_syms == NULL)
/* Swap the local symbols in. */
isym = local_syms;
esym = ext_syms;
- for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++)
+ for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++)
bfd_elf32_swap_symbol_in (input_bfd, esym, isym);
/* Now we can free the external symbols. */
free (ext_syms);
- /* Go looking for .init and .fini sections. We only want one
- stub section for each of .init* and .fini* because glibc
- splits the _init and _fini functions into multiple parts, and
- putting a stub in the middle of a function is not a good idea.
- It would be better to merge all the stub sections for an
- output section if the output section + stubs is small enough.
- This would fix the .init and .fini case and also allow stubs
- to be merged. It's more linker work though. */
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next, sec_count++)
- {
- if (hplink->first_init_sec == 0)
- {
- if (strncmp (section->name, ".init", 5) == 0)
- hplink->first_init_sec = sec_count + 1;
- }
- if (hplink->first_fini_sec == 0)
- {
- if (strncmp (section->name, ".fini", 5) == 0)
- hplink->first_fini_sec = sec_count + 1;
- }
-
#if ! LONG_BRANCH_PIC_IN_SHLIB
- /* If this is a shared link, find all the stub reloc
- sections. */
- if (info->shared)
- {
- char *name;
- asection *reloc_sec;
+ /* If this is a shared link, find all the stub reloc sections. */
+ if (info->shared)
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ char *name;
+ asection *reloc_sec;
- name = bfd_malloc (strlen (section->name)
- + sizeof STUB_SUFFIX
- + 5);
- if (name == NULL)
- return false;
- sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX);
- reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name);
- hplink->reloc_section_created[sec_count] = reloc_sec;
- free (name);
- }
+ name = bfd_malloc (strlen (section->name)
+ + sizeof STUB_SUFFIX
+ + 5);
+ if (name == NULL)
+ return false;
+ sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX);
+ reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name);
+ hplink->stub_group[section->id].reloc_sec = reloc_sec;
+ free (name);
+ }
#endif
- }
if (info->shared && hplink->multi_subspace)
{
- unsigned int symndx;
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **end_hashes;
unsigned int symcount;
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- symtab_hdr->sh_info);
+ sym_hashes = elf_sym_hashes (input_bfd);
+ end_hashes = sym_hashes + symcount;
/* Look through the global syms for functions; We need to
build export stubs for all globally visible functions. */
- for (symndx = 0; symndx < symcount; symndx++)
+ for (; sym_hashes < end_hashes; sym_hashes++)
{
struct elf32_hppa_link_hash_entry *hash;
- hash = ((struct elf32_hppa_link_hash_entry *)
- elf_sym_hashes (input_bfd)[symndx]);
+ hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
while (hash->elf.root.type == bfd_link_hash_indirect
|| hash->elf.root.type == bfd_link_hash_warning)
|| hash->elf.root.type == bfd_link_hash_defweak)
&& hash->elf.type == STT_FUNC
&& hash->elf.root.u.def.section->output_section != NULL
+ && (hash->elf.root.u.def.section->output_section->owner
+ == output_bfd)
&& hash->elf.root.u.def.section->owner == input_bfd
&& (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
&& !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
false, false);
if (stub_entry == NULL)
{
- stub_entry = hppa_add_stub (stub_name,
- sec,
- (sec_count + sec->index
- - input_bfd->section_count),
- info);
+ stub_entry = hppa_add_stub (stub_name, sec, hplink);
if (!stub_entry)
goto error_ret_free_local;
{
asection *stub_sec;
- for (input_bfd = info->input_bfds, indx = 0, sec_count = 0;
+ for (input_bfd = info->input_bfds, bfd_indx = 0;
input_bfd != NULL;
- input_bfd = input_bfd->link_next, indx++)
+ input_bfd = input_bfd->link_next, bfd_indx++)
{
Elf_Internal_Shdr *symtab_hdr;
if (symtab_hdr->sh_info == 0)
continue;
- local_syms = all_local_syms[indx];
+ local_syms = all_local_syms[bfd_indx];
/* Walk over each section attached to the input bfd. */
for (section = input_bfd->sections;
section != NULL;
- section = section->next, sec_count++)
+ section = section->next)
{
Elf_Internal_Shdr *input_rel_hdr;
Elf32_External_Rela *external_relocs, *erelaend, *erela;
|| section->reloc_count == 0)
continue;
+ /* If this section is a link-once section that will be
+ discarded, then don't create any stubs. */
+ if (section->output_section == NULL
+ || section->output_section->owner != output_bfd)
+ continue;
+
/* Allocate space for the external relocations. */
external_relocs
= ((Elf32_External_Rela *)
bfd_vma destination;
struct elf32_hppa_link_hash_entry *hash;
char *stub_name;
+ const asection *id_sec;
r_type = ELF32_R_TYPE (irela->r_info);
r_indx = ELF32_R_SYM (irela->r_info);
if (stub_type == hppa_stub_none)
continue;
+ /* Support for grouping stub sections. */
+ id_sec = hplink->stub_group[section->id].link_sec;
+
/* Get the name of this stub. */
- stub_name = hppa_stub_name (section, sym_sec, hash, irela);
+ stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
if (!stub_name)
goto error_ret_free_internal;
continue;
}
- stub_entry = hppa_add_stub (stub_name, section,
- sec_count, info);
+ stub_entry = hppa_add_stub (stub_name, section, hplink);
if (stub_entry == NULL)
{
free (stub_name);
stub_sec->_cooked_size = 0;
}
#if ! LONG_BRANCH_PIC_IN_SHLIB
- for (i = 0; i < sec_count; i++)
- {
- stub_sec = hplink->reloc_section_created[i];
- if (stub_sec != NULL)
- {
- stub_sec->_raw_size = 0;
- stub_sec->_cooked_size = 0;
- }
- }
+ {
+ int i;
+
+ for (i = top_id; i >= 0; --i)
+ {
+ /* This will probably hit the same section many times.. */
+ stub_sec = hplink->stub_group[i].reloc_sec;
+ if (stub_sec != NULL)
+ {
+ stub_sec->_raw_size = 0;
+ stub_sec->_cooked_size = 0;
+ }
+ }
+ }
#endif
bfd_hash_traverse (&hplink->stub_hash_table,
stub_changed = 0;
}
- /* We're done with the local symbols, free them. */
- for (i = 0; i < bfd_count; i++)
- if (all_local_syms[i])
- free (all_local_syms[i]);
- free (all_local_syms);
-#if ! LONG_BRANCH_PIC_IN_SHLIB
- free (hplink->reloc_section_created);
-#endif
- free (hplink->stub_section_created);
- return true;
+ ret = 1;
error_ret_free_local:
- for (i = 0; i < bfd_count; i++)
- if (all_local_syms[i])
- free (all_local_syms[i]);
+ while (bfd_count-- > 0)
+ if (all_local_syms[bfd_count])
+ free (all_local_syms[bfd_count]);
free (all_local_syms);
- error_ret_free_reloc:
-#if ! LONG_BRANCH_PIC_IN_SHLIB
- free (hplink->reloc_section_created);
- error_ret_free_stub:
-#endif
- free (hplink->stub_section_created);
- return false;
+ return ret;
}
/* Perform a relocation as part of a final link. */
static bfd_reloc_status_type
-final_link_relocate (input_section, contents, rel, value, info, sym_sec, h)
+final_link_relocate (input_section, contents, rel, value, hplink, sym_sec, h)
asection *input_section;
bfd_byte *contents;
const Elf_Internal_Rela *rel;
bfd_vma value;
- struct bfd_link_info *info;
+ struct elf32_hppa_link_hash_table *hplink;
asection *sym_sec;
struct elf32_hppa_link_hash_entry *h;
{
&& h->elf.plt.offset != (bfd_vma) -1))))
{
stub_entry = hppa_get_stub_entry (input_section, sym_sec,
- h, rel, info);
+ h, rel, hplink);
if (stub_entry != NULL)
{
value = (stub_entry->stub_offset
if (value + addend + max_branch_offset >= 2*max_branch_offset)
{
stub_entry = hppa_get_stub_entry (input_section, sym_sec,
- h, rel, info);
+ h, rel, hplink);
if (stub_entry == NULL)
return bfd_reloc_notsupported;
}
/* Do any required modifications to the relocation value, and
- determine what types of dynamic info we need to output, if
- any. */
+ determine what types of dynamic info we need to output, if
+ any. */
plabel = 0;
switch (r_type)
{
}
r = final_link_relocate (input_section, contents, rel, relocation,
- info, sym_sec, h);
+ hplink, sym_sec, h);
if (r == bfd_reloc_ok)
continue;
projects / external / binutils.git / commitdiff