/* ldcref.c -- output a cross reference table
- Copyright (C) 1996, 97, 98, 99, 2000 Free Software Foundation, Inc.
+ Copyright 1996, 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
This file is part of GLD, the Gnu Linker.
/* We keep an instance of this structure for each reference to a
symbol from a given object. */
-struct cref_ref
-{
+struct cref_ref {
/* The next reference. */
struct cref_ref *next;
/* The object. */
/* We keep a hash table of symbols. Each entry looks like this. */
-struct cref_hash_entry
-{
+struct cref_hash_entry {
struct bfd_hash_entry root;
/* The demangled name. */
char *demangled;
/* This is what the hash table looks like. */
-struct cref_hash_table
-{
+struct cref_hash_table {
struct bfd_hash_table root;
};
static struct bfd_hash_entry *cref_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
-static boolean cref_fill_array PARAMS ((struct cref_hash_entry *, PTR));
+static bfd_boolean cref_fill_array PARAMS ((struct cref_hash_entry *, PTR));
static int cref_sort_array PARAMS ((const PTR, const PTR));
static void output_one_cref PARAMS ((FILE *, struct cref_hash_entry *));
-static boolean check_nocrossref PARAMS ((struct cref_hash_entry *, PTR));
+static bfd_boolean check_nocrossref PARAMS ((struct cref_hash_entry *, PTR));
+static void check_section_sym_xref PARAMS ((lang_input_statement_type *));
static void check_refs
- PARAMS ((struct cref_hash_entry *, struct bfd_link_hash_entry *,
- struct lang_nocrossrefs *));
+ PARAMS ((const char *, asection *, bfd *, struct lang_nocrossrefs *));
static void check_reloc_refs PARAMS ((bfd *, asection *, PTR));
/* Look up an entry in the cref hash table. */
#define cref_hash_traverse(table, func, info) \
(bfd_hash_traverse \
(&(table)->root, \
- (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \
+ (bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \
(info)))
/* The cref hash table. */
/* Whether the cref hash table has been initialized. */
-static boolean cref_initialized;
+static bfd_boolean cref_initialized;
/* The number of symbols seen so far. */
/* Add a symbol to the cref hash table. This is called for every
symbol that is seen during the link. */
-/*ARGSUSED*/
void
add_cref (name, abfd, section, value)
const char *name;
{
if (! bfd_hash_table_init (&cref_table.root, cref_hash_newfunc))
einfo (_("%X%P: bfd_hash_table_init of cref table failed: %E\n"));
- cref_initialized = true;
+ cref_initialized = TRUE;
}
- h = cref_hash_lookup (&cref_table, name, true, false);
+ h = cref_hash_lookup (&cref_table, name, TRUE, FALSE);
if (h == NULL)
einfo (_("%X%P: cref_hash_lookup failed: %E\n"));
r->next = h->refs;
h->refs = r;
r->abfd = abfd;
- r->def = false;
- r->common = false;
- r->undef = false;
+ r->def = FALSE;
+ r->common = FALSE;
+ r->undef = FALSE;
}
if (bfd_is_und_section (section))
- r->undef = true;
+ r->undef = TRUE;
else if (bfd_is_com_section (section))
- r->common = true;
+ r->common = TRUE;
else
- r->def = true;
+ r->def = TRUE;
}
/* Copy the addresses of the hash table entries into an array. This
is called via cref_hash_traverse. We also fill in the demangled
name. */
-static boolean
+static bfd_boolean
cref_fill_array (h, data)
struct cref_hash_entry *h;
PTR data;
++*pph;
- return true;
+ return TRUE;
}
/* Sort an array of cref hash table entries by name. */
len = strlen (msg);
while (len < FILECOL)
{
- putc (' ' , fp);
+ putc (' ', fp);
++len;
}
fprintf (fp, _("File\n"));
struct bfd_link_hash_entry *hl;
struct cref_ref *r;
- hl = bfd_link_hash_lookup (link_info.hash, h->root.string, false,
- false, true);
+ hl = bfd_link_hash_lookup (link_info.hash, h->root.string, FALSE,
+ FALSE, TRUE);
if (hl == NULL)
einfo ("%P: symbol `%T' missing from main hash table\n",
h->root.string);
return;
cref_hash_traverse (&cref_table, check_nocrossref, (PTR) NULL);
+
+ lang_for_each_file (check_section_sym_xref);
+}
+
+/* Checks for prohibited cross references to section symbols. */
+
+static void
+check_section_sym_xref (statement)
+ lang_input_statement_type *statement;
+{
+ bfd *abfd;
+ asection *sec;
+
+ abfd = statement->the_bfd;
+ if (abfd == NULL)
+ return;
+
+ for (sec = abfd->sections; sec != NULL; sec = sec->next)
+ {
+ asection *outsec;
+
+ outsec = sec->output_section;
+ if (outsec != NULL)
+ {
+ const char *outsecname;
+ struct lang_nocrossrefs *ncrs;
+ struct lang_nocrossref *ncr;
+
+ outsecname = outsec->name;
+ for (ncrs = nocrossref_list; ncrs != NULL; ncrs = ncrs->next)
+ for (ncr = ncrs->list; ncr != NULL; ncr = ncr->next)
+ if (strcmp (ncr->name, outsecname) == 0)
+ check_refs (NULL, sec, abfd, ncrs);
+ }
+ }
}
/* Check one symbol to see if it is a prohibited cross reference. */
-/*ARGSUSED*/
-static boolean
+static bfd_boolean
check_nocrossref (h, ignore)
struct cref_hash_entry *h;
PTR ignore ATTRIBUTE_UNUSED;
const char *defsecname;
struct lang_nocrossrefs *ncrs;
struct lang_nocrossref *ncr;
+ struct cref_ref *ref;
- hl = bfd_link_hash_lookup (link_info.hash, h->root.string, false,
- false, true);
+ hl = bfd_link_hash_lookup (link_info.hash, h->root.string, FALSE,
+ FALSE, TRUE);
if (hl == NULL)
{
einfo (_("%P: symbol `%T' missing from main hash table\n"),
h->root.string);
- return true;
+ return TRUE;
}
if (hl->type != bfd_link_hash_defined
&& hl->type != bfd_link_hash_defweak)
- return true;
+ return TRUE;
defsec = hl->u.def.section->output_section;
if (defsec == NULL)
- return true;
+ return TRUE;
defsecname = bfd_get_section_name (defsec->owner, defsec);
for (ncrs = nocrossref_list; ncrs != NULL; ncrs = ncrs->next)
for (ncr = ncrs->list; ncr != NULL; ncr = ncr->next)
if (strcmp (ncr->name, defsecname) == 0)
- check_refs (h, hl, ncrs);
+ for (ref = h->refs; ref != NULL; ref = ref->next)
+ check_refs (hl->root.string, hl->u.def.section, ref->abfd, ncrs);
- return true;
+ return TRUE;
}
/* The struct is used to pass information from check_refs to
check_reloc_refs through bfd_map_over_sections. */
-struct check_refs_info
-{
- struct cref_hash_entry *h;
+struct check_refs_info {
+ const char *sym_name;
asection *defsec;
struct lang_nocrossrefs *ncrs;
asymbol **asymbols;
- boolean same;
};
/* This function is called for each symbol defined in a section which
prohibited sections. */
static void
-check_refs (h, hl, ncrs)
- struct cref_hash_entry *h;
- struct bfd_link_hash_entry *hl;
+check_refs (name, sec, abfd, ncrs)
+ const char *name;
+ asection *sec;
+ bfd *abfd;
struct lang_nocrossrefs *ncrs;
{
- struct cref_ref *ref;
+ lang_input_statement_type *li;
+ asymbol **asymbols;
+ struct check_refs_info info;
+
+ /* We need to look through the relocations for this BFD, to see
+ if any of the relocations which refer to this symbol are from
+ a prohibited section. Note that we need to do this even for
+ the BFD in which the symbol is defined, since even a single
+ BFD might contain a prohibited cross reference. */
- for (ref = h->refs; ref != NULL; ref = ref->next)
+ li = (lang_input_statement_type *) abfd->usrdata;
+ if (li != NULL && li->asymbols != NULL)
+ asymbols = li->asymbols;
+ else
{
- lang_input_statement_type *li;
- asymbol **asymbols;
- struct check_refs_info info;
-
- /* We need to look through the relocations for this BFD, to see
- if any of the relocations which refer to this symbol are from
- a prohibited section. Note that we need to do this even for
- the BFD in which the symbol is defined, since even a single
- BFD might contain a prohibited cross reference; for this
- case, we set the SAME field in INFO, which will cause
- CHECK_RELOCS_REFS to check for relocations against the
- section as well as against the symbol. */
-
- li = (lang_input_statement_type *) ref->abfd->usrdata;
- if (li != NULL && li->asymbols != NULL)
- asymbols = li->asymbols;
- else
+ long symsize;
+ long symbol_count;
+
+ symsize = bfd_get_symtab_upper_bound (abfd);
+ if (symsize < 0)
+ einfo (_("%B%F: could not read symbols; %E\n"), abfd);
+ asymbols = (asymbol **) xmalloc (symsize);
+ symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
+ if (symbol_count < 0)
+ einfo (_("%B%F: could not read symbols: %E\n"), abfd);
+ if (li != NULL)
{
- long symsize;
- long symbol_count;
-
- symsize = bfd_get_symtab_upper_bound (ref->abfd);
- if (symsize < 0)
- einfo (_("%B%F: could not read symbols; %E\n"), ref->abfd);
- asymbols = (asymbol **) xmalloc (symsize);
- symbol_count = bfd_canonicalize_symtab (ref->abfd, asymbols);
- if (symbol_count < 0)
- einfo (_("%B%F: could not read symbols: %E\n"), ref->abfd);
- if (li != NULL)
- {
- li->asymbols = asymbols;
- li->symbol_count = symbol_count;
- }
+ li->asymbols = asymbols;
+ li->symbol_count = symbol_count;
}
-
- info.h = h;
- info.defsec = hl->u.def.section;
- info.ncrs = ncrs;
- info.asymbols = asymbols;
- if (ref->abfd == hl->u.def.section->owner)
- info.same = true;
- else
- info.same = false;
- bfd_map_over_sections (ref->abfd, check_reloc_refs, (PTR) &info);
-
- if (li == NULL)
- free (asymbols);
}
+
+ info.sym_name = name;
+ info.defsec = sec;
+ info.ncrs = ncrs;
+ info.asymbols = asymbols;
+ bfd_map_over_sections (abfd, check_reloc_refs, (PTR) &info);
+
+ if (li == NULL)
+ free (asymbols);
}
-/* This is called via bfd_map_over_sections. INFO->H is a symbol
+/* This is called via bfd_map_over_sections. INFO->SYM_NAME is a symbol
defined in INFO->DEFSECNAME. If this section maps into any of the
sections listed in INFO->NCRS, other than INFO->DEFSECNAME, then we
look through the relocations. If any of the relocations are to
- INFO->H, then we report a prohibited cross reference error. */
+ INFO->SYM_NAME, then we report a prohibited cross reference error. */
static void
check_reloc_refs (abfd, sec, iarg)
/* This section is one for which cross references are prohibited.
Look through the relocations, and see if any of them are to
- INFO->H. */
+ INFO->SYM_NAME. If INFO->SYMNAME is NULL, check for relocations
+ against the section symbol. */
- symname = info->h->root.string;
+ symname = info->sym_name;
relsize = bfd_get_reloc_upper_bound (abfd, sec);
if (relsize < 0)
if (q->sym_ptr_ptr != NULL
&& *q->sym_ptr_ptr != NULL
- && (strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), symname) == 0
- || (info->same
- && bfd_get_section (*q->sym_ptr_ptr) == info->defsec)))
+ && (symname != NULL
+ ? strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), symname) == 0
+ : (((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
+ && bfd_get_section (*q->sym_ptr_ptr) == info->defsec)))
{
/* We found a reloc for the symbol. The symbol is defined
in OUTSECNAME. This reloc is from a section which is
projects / binutils.git / blobdiff