/* ELF strtab with GC and suffix merging support.
- Copyright 2001, 2002, 2003, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 2001-2017 Free Software Foundation, Inc.
Written by Jakub Jelinek <jakub@redhat.com>.
This file is part of BFD, the Binary File Descriptor library.
{
struct bfd_hash_table table;
/* Next available index. */
- bfd_size_type size;
+ size_t size;
/* Number of array entries alloced. */
- bfd_size_type alloced;
+ size_t alloced;
/* Final strtab size. */
bfd_size_type sec_size;
/* Array of pointers to strtab entries. */
table->size = 1;
table->alloced = 64;
amt = sizeof (struct elf_strtab_hasn_entry *);
- table->array = (struct elf_strtab_hash_entry **)
- bfd_malloc (table->alloced * amt);
+ table->array = ((struct elf_strtab_hash_entry **)
+ bfd_malloc (table->alloced * amt));
if (table->array == NULL)
{
free (table);
/* Get the index of an entity in a hash table, adding it if it is not
already present. */
-bfd_size_type
+size_t
_bfd_elf_strtab_add (struct elf_strtab_hash *tab,
const char *str,
bfd_boolean copy)
bfd_hash_lookup (&tab->table, str, TRUE, copy);
if (entry == NULL)
- return (bfd_size_type) -1;
+ return (size_t) -1;
entry->refcount++;
if (entry->len == 0)
tab->array = (struct elf_strtab_hash_entry **)
bfd_realloc_or_free (tab->array, tab->alloced * amt);
if (tab->array == NULL)
- return (bfd_size_type) -1;
+ return (size_t) -1;
}
entry->u.index = tab->size++;
}
void
-_bfd_elf_strtab_addref (struct elf_strtab_hash *tab, bfd_size_type idx)
+_bfd_elf_strtab_addref (struct elf_strtab_hash *tab, size_t idx)
{
- if (idx == 0 || idx == (bfd_size_type) -1)
+ if (idx == 0 || idx == (size_t) -1)
return;
BFD_ASSERT (tab->sec_size == 0);
BFD_ASSERT (idx < tab->size);
}
void
-_bfd_elf_strtab_delref (struct elf_strtab_hash *tab, bfd_size_type idx)
+_bfd_elf_strtab_delref (struct elf_strtab_hash *tab, size_t idx)
{
- if (idx == 0 || idx == (bfd_size_type) -1)
+ if (idx == 0 || idx == (size_t) -1)
return;
BFD_ASSERT (tab->sec_size == 0);
BFD_ASSERT (idx < tab->size);
}
unsigned int
-_bfd_elf_strtab_refcount (struct elf_strtab_hash *tab, bfd_size_type idx)
+_bfd_elf_strtab_refcount (struct elf_strtab_hash *tab, size_t idx)
{
return tab->array[idx]->refcount;
}
void
-_bfd_elf_strtab_clear_refs (struct elf_strtab_hash *tab, bfd_size_type idx)
+_bfd_elf_strtab_clear_all_refs (struct elf_strtab_hash *tab)
+{
+ size_t idx;
+
+ for (idx = 1; idx < tab->size; idx++)
+ tab->array[idx]->refcount = 0;
+}
+
+/* Save strtab refcounts prior to adding --as-needed library. */
+
+struct strtab_save
+{
+ size_t size;
+ unsigned int refcount[1];
+};
+
+void *
+_bfd_elf_strtab_save (struct elf_strtab_hash *tab)
+{
+ struct strtab_save *save;
+ size_t idx, size;
+
+ size = sizeof (*save) + (tab->size - 1) * sizeof (save->refcount[0]);
+ save = bfd_malloc (size);
+ if (save == NULL)
+ return save;
+
+ save->size = tab->size;
+ for (idx = 1; idx < tab->size; idx++)
+ save->refcount[idx] = tab->array[idx]->refcount;
+ return save;
+}
+
+/* Restore strtab refcounts on finding --as-needed library not needed. */
+
+void
+_bfd_elf_strtab_restore (struct elf_strtab_hash *tab, void *buf)
{
- while (idx < tab->size)
- tab->array[idx++]->refcount = 0;
+ size_t idx, curr_size = tab->size;
+ struct strtab_save *save = (struct strtab_save *) buf;
+
+ BFD_ASSERT (tab->sec_size == 0);
+ BFD_ASSERT (save->size <= curr_size);
+ tab->size = save->size;
+ for (idx = 1; idx < save->size; ++idx)
+ tab->array[idx]->refcount = save->refcount[idx];
+
+ for (; idx < curr_size; ++idx)
+ {
+ /* We don't remove entries from the hash table, just set their
+ REFCOUNT to zero. Setting LEN zero will result in the size
+ growing if the entry is added again. See _bfd_elf_strtab_add. */
+ tab->array[idx]->refcount = 0;
+ tab->array[idx]->len = 0;
+ }
}
bfd_size_type
}
bfd_size_type
-_bfd_elf_strtab_offset (struct elf_strtab_hash *tab, bfd_size_type idx)
+_bfd_elf_strtab_offset (struct elf_strtab_hash *tab, size_t idx)
{
struct elf_strtab_hash_entry *entry;
bfd_boolean
_bfd_elf_strtab_emit (register bfd *abfd, struct elf_strtab_hash *tab)
{
- bfd_size_type off = 1, i;
+ bfd_size_type off = 1;
+ size_t i;
if (bfd_bwrite ("", 1, abfd) != 1)
return FALSE;
_bfd_elf_strtab_finalize (struct elf_strtab_hash *tab)
{
struct elf_strtab_hash_entry **array, **a, *e;
- bfd_size_type size, amt;
-
- /* GCC 2.91.66 (egcs-1.1.2) on i386 miscompiles this function when i is
- a 64-bit bfd_size_type: a 64-bit target or --enable-64-bit-bfd.
- Besides, indexing with a long long wouldn't give anything but extra
- cycles. */
- size_t i;
+ bfd_size_type amt, sec_size;
+ size_t size, i;
/* Sort the strings by suffix and length. */
- amt = tab->size * sizeof (struct elf_strtab_hash_entry *);
+ amt = tab->size;
+ amt *= sizeof (struct elf_strtab_hash_entry *);
array = (struct elf_strtab_hash_entry **) bfd_malloc (amt);
if (array == NULL)
goto alloc_failure;
free (array);
/* Assign positions to the strings we want to keep. */
- size = 1;
+ sec_size = 1;
for (i = 1; i < tab->size; ++i)
{
e = tab->array[i];
if (e->refcount && e->len > 0)
{
- e->u.index = size;
- size += e->len;
+ e->u.index = sec_size;
+ sec_size += e->len;
}
}
- tab->sec_size = size;
+ tab->sec_size = sec_size;
/* Adjust the rest. */
for (i = 1; i < tab->size; ++i)