/* Linker command language support.
- Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001
Free Software Foundation, Inc.
This file is part of GLD, the Gnu Linker.
/* FORWARDS */
static lang_statement_union_type *new_statement PARAMS ((enum statement_enum,
size_t,
- lang_statement_list_type*));
+ lang_statement_list_type *));
/* LOCALS */
static struct obstack stat_obstack;
PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
static void print_statements PARAMS ((void));
static bfd_vma insert_pad
- PARAMS ((lang_statement_union_type **this_ptr, fill_type fill,
- unsigned int power, asection *output_section_statement,
- bfd_vma dot));
+ PARAMS ((lang_statement_union_type **, fill_type,
+ unsigned int, asection *, bfd_vma));
static bfd_vma size_input_section
- PARAMS ((lang_statement_union_type **this_ptr,
- lang_output_section_statement_type *output_section_statement,
- fill_type fill, bfd_vma dot, boolean relax));
+ PARAMS ((lang_statement_union_type **, lang_output_section_statement_type *,
+ fill_type, bfd_vma, boolean));
static void lang_finish PARAMS ((void));
static void ignore_bfd_errors PARAMS ((const char *, ...));
+static void record_bfd_errors PARAMS ((const char *, ...));
static void lang_check PARAMS ((void));
static void lang_common PARAMS ((void));
static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
boolean lang_float_flag = false;
boolean delete_output_file_on_failure = false;
struct lang_nocrossrefs *nocrossref_list;
+struct unique_sections *unique_section_list;
etree_type *base; /* Relocation base - or null */
#define cat(a,b) a/**/b
#endif
-#define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y)
+/* Don't beautify the line below with "innocent" whitespace, it breaks the K&R C preprocessor! */
+#define new_stat(x, y) (cat (x,_type)*) new_statement (cat (x,_enum), sizeof (cat (x,_type)), y)
#define outside_section_address(q) ((q)->output_offset + (q)->output_section->vma)
-#define outside_symbol_address(q) ((q)->value + outside_section_address(q->section))
+#define outside_symbol_address(q) ((q)->value + outside_section_address (q->section))
#define SECTION_NAME_MAP_LENGTH (16)
return obstack_alloc (&stat_obstack, size);
}
+boolean
+unique_section_p (secnam)
+ const char *secnam;
+{
+ struct unique_sections *unam;
+
+ for (unam = unique_section_list; unam; unam = unam->next)
+ if (wildcardp (unam->name)
+ ? fnmatch (unam->name, secnam, 0) == 0
+ : strcmp (unam->name, secnam) == 0)
+ {
+ return true;
+ }
+
+ return false;
+}
+
/* Generic traversal routines for finding matching sections. */
static void
if (file->just_syms_flag == false)
{
register asection *s;
- boolean wildcard;
+ boolean wildcard = false;
- if (section == NULL)
- wildcard = false;
- else
+ if (section != NULL)
wildcard = wildcardp (section);
for (s = file->the_bfd->sections; s != NULL; s = s->next)
{
boolean match;
+ const char *sname = bfd_get_section_name (file->the_bfd, s);
if (section == NULL)
match = true;
+ else if (wildcard)
+ match = fnmatch (section, sname, 0) == 0 ? true : false;
else
- {
- const char *name;
+ match = strcmp (section, sname) == 0 ? true : false;
- name = bfd_get_section_name (file->the_bfd, s);
- if (wildcard)
- match = fnmatch (section, name, 0) == 0 ? true : false;
- else
- match = strcmp (section, name) == 0 ? true : false;
- }
-
- if (match)
+ /* If this is a wild-card output section statement, exclude
+ sections that match UNIQUE_SECTION_LIST. */
+ if (match && (data == NULL || !unique_section_p (sname)))
(*callback) (ptr, s, file, data);
}
}
if ((flags & SEC_LINK_ONCE) == 0)
return;
- /* FIXME: When doing a relocateable link, we may have trouble
+ /* FIXME: When doing a relocatable link, we may have trouble
copying relocations in other sections that refer to local symbols
in the section being discarded. Those relocations will have to
be converted somehow; as of this writing I'm not sure that any of
the backends handle that correctly.
It is tempting to instead not discard link once sections when
- doing a relocateable link (technically, they should be discarded
+ doing a relocatable link (technically, they should be discarded
whenever we are building constructors). However, that fails,
because the linker winds up combining all the link once sections
into a single large link once section, which defeats the purpose
of having link once sections in the first place.
- Also, not merging link once sections in a relocateable link
+ Also, not merging link once sections in a relocatable link
causes trouble for MIPS ELF, which relies in link once semantics
to handle the .reginfo section correctly. */
discarded, we must retain a pointer to the section which
we are really going to use. */
sec->output_section = bfd_abs_section_ptr;
- if (sec->comdat != NULL)
- sec->comdat->sec = l->sec;
+ sec->kept_section = l->sec;
return;
}
if (! first && (section->output_section->flags & SEC_READONLY) == 0)
flags &= ~ SEC_READONLY;
+ /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */
+ if (! first
+ && ((section->output_section->flags & (SEC_MERGE | SEC_STRINGS))
+ != (flags & (SEC_MERGE | SEC_STRINGS))
+ || ((flags & SEC_MERGE)
+ && section->output_section->entsize != section->entsize)))
+ {
+ section->output_section->flags &= ~ (SEC_MERGE | SEC_STRINGS);
+ flags &= ~ (SEC_MERGE | SEC_STRINGS);
+ }
+
section->output_section->flags |= flags;
+ if (flags & SEC_MERGE)
+ section->output_section->entsize = section->entsize;
+
/* If SEC_READONLY is not set in the input section, then clear
it from the output section. */
if ((section->flags & SEC_READONLY) == 0)
if (s->input_statement.real)
{
lang_statement_list_type add;
+ bfd_error_handler_type pfn;
s->input_statement.target = current_target;
bfd_archive))
s->input_statement.loaded = false;
- lang_list_init (&add);
+ lang_list_init (& add);
+
+ /* We need to know if an error occurs whilst loading the
+ symbols, since this means that a valid executable can
+ not be produced. */
+ pfn = bfd_set_error_handler (record_bfd_errors);
load_symbols (&s->input_statement, &add);
+ bfd_set_error_handler (pfn);
+
if (add.head != NULL)
{
*add.tail = s->next;
#define IGNORE_SECTION(bfd, s) \
(((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) != (SEC_ALLOC | SEC_LOAD)) \
|| bfd_section_size (bfd, s) == 0)
-
/* Check to see if any allocated sections overlap with other allocated
sections. This can happen when the linker script specifically specifies
the output section addresses of the two sections. */
asection *s;
unsigned opb = bfd_octets_per_byte (output_bfd);
+
/* Scan all sections in the output list. */
for (s = output_bfd->sections; s != NULL; s = s->next)
{
}
}
+
+/* This is the routine to handle BFD error messages. */
+
+#ifdef ANSI_PROTOTYPES
+
+static void
+record_bfd_errors (const char *s, ...)
+{
+ va_list p;
+
+ einfo ("%P: ");
+
+ va_start (p, s);
+
+ vfprintf (stderr, s, p);
+
+ va_end (p);
+
+ fprintf (stderr, "\n");
+
+ einfo ("%X");
+}
+
+#else /* ! defined (ANSI_PROTOTYPES) */
+
+static void
+record_bfd_errors (va_alist)
+ va_dcl
+{
+ va_list p;
+ const char *s;
+
+ einfo ("%P: ");
+
+ va_start (p);
+
+ s = va_arg (p, const char *);
+ vfprintf (stderr, s, p);
+
+ va_end (p);
+
+ fprintf (stderr, "\n");
+
+ einfo ("%X");
+}
+
+#endif /* ! defined (ANSI_PROTOTYPES) */
/* This is a small function used when we want to ignore errors from
BFD. */
bfd_printable_name (input_bfd), input_bfd,
bfd_printable_name (output_bfd));
}
- else
+ else if (bfd_count_sections (input_bfd))
{
+ /* If the input bfd has no contents, it shouldn't set the
+ private data of the output bfd. */
+
bfd_error_handler_type pfn = NULL;
/* If we aren't supposed to warn about mismatched input
/* A list of all the sections in this overlay. */
-struct overlay_list
-{
+struct overlay_list {
struct overlay_list *next;
lang_output_section_statement_type *os;
};
l->os->fill = fill;
if (region != NULL && l->os->region == NULL)
l->os->region = region;
- if (lma_region != NULL && l->os->lma_region == NULL)
+ /* We only set lma_region for the first overlay section, as
+ subsequent overlay sections will have load_base set relative
+ to the first section. Also, don't set lma_region if
+ load_base is specified. FIXME: There should really be a test
+ that `AT ( LDADDR )' doesn't conflict with `AT >LMA_REGION'
+ rather than letting LDADDR simply override LMA_REGION. */
+ if (lma_region != NULL && l->os->lma_region == NULL
+ && l->next == NULL && l->os->load_base == NULL)
l->os->lma_region = lma_region;
if (phdrs != NULL && l->os->phdrs == NULL)
l->os->phdrs = phdrs;
einfo (_("%X%P: unable to read .exports section contents"), sec);
p = contents;
- while (p < contents+len)
+ while (p < contents + len)
{
greg = lang_new_vers_regex (greg, p, NULL);
p = strchr (p, '\0') + 1;
lang_register_vers_node (command_line.version_exports_section,
lang_new_vers_node (greg, lreg), NULL);
}
+
+void
+lang_add_unique (name)
+ const char *name;
+{
+ struct unique_sections *ent;
+
+ for (ent = unique_section_list; ent; ent = ent->next)
+ if (strcmp (ent->name, name) == 0)
+ return;
+
+ ent = (struct unique_sections *) xmalloc (sizeof *ent);
+ ent->name = xstrdup (name);
+ ent->next = unique_section_list;
+ unique_section_list = ent;
+}
projects / thirdparty / binutils-gdb.git / blobdiff