/* hash.c -- hash table routines for BFD
- Copyright 1993, 1994, 1995, 1997, 1999, 2001, 2002, 2003, 2004, 2005,
- 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1993-2021 Free Software Foundation, Inc.
Written by Steve Chamberlain <sac@cygnus.com>
This file is part of BFD, the Binary File Descriptor library.
.struct bfd_hash_entry *
.@var{function_name} (struct bfd_hash_entry *entry,
-. struct bfd_hash_table *table,
-. const char *string)
+. struct bfd_hash_table *table,
+. const char *string)
.{
. struct @var{entry_type} *ret = (@var{entry_type} *) entry;
.
. {
. ret = bfd_hash_allocate (table, sizeof (* ret));
. if (ret == NULL)
-. return NULL;
+. return NULL;
. }
.
. {* Call the allocation method of the base class. *}
. ret = ((@var{entry_type} *)
-. @var{base_newfunc} ((struct bfd_hash_entry *) ret, table, string));
+. @var{base_newfunc} ((struct bfd_hash_entry *) ret, table, string));
.
. {* Initialize the local fields here. *}
.
{
/* These are primes that are near, but slightly smaller than, a
power of two. */
- static const unsigned long primes[] = {
- (unsigned long) 127,
- (unsigned long) 2039,
- (unsigned long) 32749,
- (unsigned long) 65521,
- (unsigned long) 131071,
- (unsigned long) 262139,
- (unsigned long) 524287,
- (unsigned long) 1048573,
- (unsigned long) 2097143,
- (unsigned long) 4194301,
- (unsigned long) 8388593,
- (unsigned long) 16777213,
- (unsigned long) 33554393,
- (unsigned long) 67108859,
- (unsigned long) 134217689,
- (unsigned long) 268435399,
- (unsigned long) 536870909,
- (unsigned long) 1073741789,
- (unsigned long) 2147483647,
+ static const unsigned long primes[] =
+ {
+ (unsigned long) 31,
+ (unsigned long) 61,
+ (unsigned long) 127,
+ (unsigned long) 251,
+ (unsigned long) 509,
+ (unsigned long) 1021,
+ (unsigned long) 2039,
+ (unsigned long) 4093,
+ (unsigned long) 8191,
+ (unsigned long) 16381,
+ (unsigned long) 32749,
+ (unsigned long) 65521,
+ (unsigned long) 131071,
+ (unsigned long) 262139,
+ (unsigned long) 524287,
+ (unsigned long) 1048573,
+ (unsigned long) 2097143,
+ (unsigned long) 4194301,
+ (unsigned long) 8388593,
+ (unsigned long) 16777213,
+ (unsigned long) 33554393,
+ (unsigned long) 67108859,
+ (unsigned long) 134217689,
+ (unsigned long) 268435399,
+ (unsigned long) 536870909,
+ (unsigned long) 1073741789,
+ (unsigned long) 2147483647,
/* 4294967291L */
- ((unsigned long) 2147483647) + ((unsigned long) 2147483644),
+ ((unsigned long) 2147483647) + ((unsigned long) 2147483644),
};
const unsigned long *low = &primes[0];
return *low;
}
-static size_t bfd_default_hash_table_size = DEFAULT_SIZE;
+static unsigned long bfd_default_hash_table_size = DEFAULT_SIZE;
/* Create a new hash table, given a number of entries. */
-bfd_boolean
+bool
bfd_hash_table_init_n (struct bfd_hash_table *table,
struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *,
struct bfd_hash_table *,
unsigned int entsize,
unsigned int size)
{
- unsigned int alloc;
+ unsigned long alloc;
- alloc = size * sizeof (struct bfd_hash_entry *);
+ alloc = size;
+ alloc *= sizeof (struct bfd_hash_entry *);
+ if (alloc / sizeof (struct bfd_hash_entry *) != size)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
table->memory = (void *) objalloc_create ();
if (table->memory == NULL)
{
bfd_set_error (bfd_error_no_memory);
- return FALSE;
+ return false;
}
table->table = (struct bfd_hash_entry **)
objalloc_alloc ((struct objalloc *) table->memory, alloc);
if (table->table == NULL)
{
+ bfd_hash_table_free (table);
bfd_set_error (bfd_error_no_memory);
- return FALSE;
+ return false;
}
memset ((void *) table->table, 0, alloc);
table->size = size;
table->count = 0;
table->frozen = 0;
table->newfunc = newfunc;
- return TRUE;
+ return true;
}
/* Create a new hash table with the default number of entries. */
-bfd_boolean
+bool
bfd_hash_table_init (struct bfd_hash_table *table,
struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *,
struct bfd_hash_table *,
unsigned int len;
unsigned int c;
+ BFD_ASSERT (string != NULL);
hash = 0;
len = 0;
s = (const unsigned char *) string;
struct bfd_hash_entry *
bfd_hash_lookup (struct bfd_hash_table *table,
const char *string,
- bfd_boolean create,
- bfd_boolean copy)
+ bool create,
+ bool copy)
{
unsigned long hash;
struct bfd_hash_entry *hashp;
char *new_string;
new_string = (char *) objalloc_alloc ((struct objalloc *) table->memory,
- len + 1);
+ len + 1);
if (!new_string)
{
bfd_set_error (bfd_error_no_memory);
table->frozen = 1;
return hashp;
}
- memset ((PTR) newtable, 0, alloc);
+ memset (newtable, 0, alloc);
for (hi = 0; hi < table->size; hi ++)
while (table->table[hi])
{
if (entry == NULL)
entry = (struct bfd_hash_entry *) bfd_hash_allocate (table,
- sizeof (* entry));
+ sizeof (* entry));
return entry;
}
void
bfd_hash_traverse (struct bfd_hash_table *table,
- bfd_boolean (*func) (struct bfd_hash_entry *, void *),
+ bool (*func) (struct bfd_hash_entry *, void *),
void * info)
{
unsigned int i;
table->frozen = 0;
}
\f
-void
-bfd_hash_set_default_size (bfd_size_type hash_size)
+unsigned long
+bfd_hash_set_default_size (unsigned long hash_size)
{
- /* Extend this prime list if you want more granularity of hash table size. */
- static const bfd_size_type hash_size_primes[] =
- {
- 251, 509, 1021, 2039, 4051, 8599, 16699, 32749
- };
- size_t _index;
-
- /* Work out best prime number near the hash_size. */
- for (_index = 0; _index < ARRAY_SIZE (hash_size_primes) - 1; ++_index)
- if (hash_size <= hash_size_primes[_index])
- break;
-
- bfd_default_hash_table_size = hash_size_primes[_index];
+ /* These silly_size values result in around 1G and 32M of memory
+ being allocated for the table of pointers. Note that the number
+ of elements allocated will be almost twice the size of any power
+ of two chosen here. */
+ unsigned long silly_size = sizeof (size_t) > 4 ? 0x4000000 : 0x400000;
+ if (hash_size > silly_size)
+ hash_size = silly_size;
+ else if (hash_size != 0)
+ hash_size--;
+ hash_size = higher_prime_number (hash_size);
+ BFD_ASSERT (hash_size != 0);
+ bfd_default_hash_table_size = hash_size;
+ return bfd_default_hash_table_size;
}
\f
/* A few different object file formats (a.out, COFF, ELF) use a string
struct strtab_hash_entry *first;
/* Last string in strtab. */
struct strtab_hash_entry *last;
- /* Whether to precede strings with a two byte length, as in the
- XCOFF .debug section. */
- bfd_boolean xcoff;
+ /* Whether to precede strings with a two or four byte length,
+ as in the XCOFF .debug section. */
+ char length_field_size;
};
+
/* Routine to create an entry in a strtab. */
static struct bfd_hash_entry *
subclass. */
if (ret == NULL)
ret = (struct strtab_hash_entry *) bfd_hash_allocate (table,
- sizeof (* ret));
+ sizeof (* ret));
if (ret == NULL)
return NULL;
_bfd_stringtab_init (void)
{
struct bfd_strtab_hash *table;
- bfd_size_type amt = sizeof (* table);
+ size_t amt = sizeof (* table);
table = (struct bfd_strtab_hash *) bfd_malloc (amt);
if (table == NULL)
table->size = 0;
table->first = NULL;
table->last = NULL;
- table->xcoff = FALSE;
+ table->length_field_size = 0;
return table;
}
string. */
struct bfd_strtab_hash *
-_bfd_xcoff_stringtab_init (void)
+_bfd_xcoff_stringtab_init (bool isxcoff64)
{
struct bfd_strtab_hash *ret;
ret = _bfd_stringtab_init ();
if (ret != NULL)
- ret->xcoff = TRUE;
+ ret->length_field_size = isxcoff64 ? 4 : 2;
return ret;
}
/* Get the index of a string in a strtab, adding it if it is not
already present. If HASH is FALSE, we don't really use the hash
- table, and we don't eliminate duplicate strings. */
+ table, and we don't eliminate duplicate strings. If COPY is true
+ then store a copy of STR if creating a new entry. */
bfd_size_type
_bfd_stringtab_add (struct bfd_strtab_hash *tab,
const char *str,
- bfd_boolean hash,
- bfd_boolean copy)
+ bool hash,
+ bool copy)
{
struct strtab_hash_entry *entry;
if (hash)
{
- entry = strtab_hash_lookup (tab, str, TRUE, copy);
+ entry = strtab_hash_lookup (tab, str, true, copy);
if (entry == NULL)
return (bfd_size_type) -1;
}
else
{
entry = (struct strtab_hash_entry *) bfd_hash_allocate (&tab->table,
- sizeof (* entry));
+ sizeof (* entry));
if (entry == NULL)
return (bfd_size_type) -1;
if (! copy)
entry->root.string = str;
else
{
+ size_t len = strlen (str) + 1;
char *n;
- n = (char *) bfd_hash_allocate (&tab->table, strlen (str) + 1);
+ n = (char *) bfd_hash_allocate (&tab->table, len);
if (n == NULL)
return (bfd_size_type) -1;
+ memcpy (n, str, len);
entry->root.string = n;
}
entry->index = (bfd_size_type) -1;
{
entry->index = tab->size;
tab->size += strlen (str) + 1;
- if (tab->xcoff)
- {
- entry->index += 2;
- tab->size += 2;
- }
+ entry->index += tab->length_field_size;
+ tab->size += tab->length_field_size;
if (tab->first == NULL)
tab->first = entry;
else
/* Write out a strtab. ABFD must already be at the right location in
the file. */
-bfd_boolean
+bool
_bfd_stringtab_emit (bfd *abfd, struct bfd_strtab_hash *tab)
{
- bfd_boolean xcoff;
struct strtab_hash_entry *entry;
- xcoff = tab->xcoff;
-
for (entry = tab->first; entry != NULL; entry = entry->next)
{
const char *str;
str = entry->root.string;
len = strlen (str) + 1;
- if (xcoff)
+ if (tab->length_field_size == 4)
+ {
+ bfd_byte buf[4];
+
+ /* The output length includes the null byte. */
+ bfd_put_32 (abfd, (bfd_vma) len, buf);
+ if (bfd_bwrite ((void *) buf, (bfd_size_type) 4, abfd) != 4)
+ return false;
+ }
+ else if (tab->length_field_size == 2)
{
bfd_byte buf[2];
/* The output length includes the null byte. */
bfd_put_16 (abfd, (bfd_vma) len, buf);
if (bfd_bwrite ((void *) buf, (bfd_size_type) 2, abfd) != 2)
- return FALSE;
+ return false;
}
if (bfd_bwrite ((void *) str, (bfd_size_type) len, abfd) != len)
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
projects / deliverable / binutils-gdb.git / blobdiff