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* ldlang.c (walk_wild, walk_wild_file, walk_wild_section,

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output_section_callback, gc_section_callback): New functions for
     generic section walks.
     (wild, lang_gc_wild): Use walk_wild.
     (wild_file, lang_gc_wild_file): Deleted. Common logic moved to
     walk_wild_file.
     (wild_section, lang_gc_wild_section): Deleted. Common logic moved
     to walk_fild_section.  Unique logic moved into callbacks
     output_section_callback and gc_section_callback.
This commit is contained in:
Richard Henderson
1999-05-08 23:40:58 +00:00
parent d0e9a01c12
commit 4dec4d4e74
2 changed files with 210 additions and 277 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
ld/ChangeLog
View File

@ -1,3 +1,15 @@
1999-05-12 Anthony Green <green@cygnus.com>
* ldlang.c (walk_wild, walk_wild_file, walk_wild_section,
output_section_callback, gc_section_callback): New functions for
generic section walks.
(wild, lang_gc_wild): Use walk_wild.
(wild_file, lang_gc_wild_file): Deleted. Common logic moved to
walk_wild_file.
(wild_section, lang_gc_wild_section): Deleted. Common logic moved
to walk_fild_section. Unique logic moved into callbacks
output_section_callback and gc_section_callback.
1999-04-26 Tom Tromey <tromey@cygnus.com> 1999-04-26 Tom Tromey <tromey@cygnus.com>
* aclocal.m4, configure: Updated for new version of libtool. * aclocal.m4, configure: Updated for new version of libtool.

475
ld/ldlang.c
View File

@ -77,16 +77,9 @@ static boolean wildcardp PARAMS ((const char *));
static lang_statement_union_type *wild_sort static lang_statement_union_type *wild_sort
PARAMS ((lang_wild_statement_type *, lang_input_statement_type *, PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
asection *)); asection *));
static void wild_section PARAMS ((lang_wild_statement_type *ptr,
const char *section,
lang_input_statement_type *file,
lang_output_section_statement_type *output));
static lang_input_statement_type *lookup_name PARAMS ((const char *name)); static lang_input_statement_type *lookup_name PARAMS ((const char *name));
static void load_symbols PARAMS ((lang_input_statement_type *entry, static void load_symbols PARAMS ((lang_input_statement_type *entry,
lang_statement_list_type *)); lang_statement_list_type *));
static void wild_file PARAMS ((lang_wild_statement_type *, const char *,
lang_input_statement_type *,
lang_output_section_statement_type *));
static void wild PARAMS ((lang_wild_statement_type *s, static void wild PARAMS ((lang_wild_statement_type *s,
const char *section, const char *file, const char *section, const char *file,
const char *target, const char *target,
@ -142,20 +135,23 @@ static int topower PARAMS ((int));
static void lang_set_startof PARAMS ((void)); static void lang_set_startof PARAMS ((void));
static void reset_memory_regions PARAMS ((void)); static void reset_memory_regions PARAMS ((void));
static void lang_record_phdrs PARAMS ((void)); static void lang_record_phdrs PARAMS ((void));
static void lang_gc_wild_section
PARAMS ((lang_wild_statement_type *, const char *,
lang_input_statement_type *));
static void lang_gc_wild_file
PARAMS ((lang_wild_statement_type *, const char *,
lang_input_statement_type *));
static void lang_gc_wild static void lang_gc_wild
PARAMS ((lang_wild_statement_type *, const char *, const char *)); PARAMS ((lang_wild_statement_type *, const char *, const char *));
static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *)); static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *));
static void lang_gc_sections PARAMS ((void)); static void lang_gc_sections PARAMS ((void));
static void lang_do_version_exports_section PARAMS ((void)); static void lang_do_version_exports_section PARAMS ((void));
static void lang_check_section_addresses PARAMS ((void)); static void lang_check_section_addresses PARAMS ((void));
typedef void (*callback_t) PARAMS ((lang_wild_statement_type *,
asection *, lang_input_statement_type *,
void *));
static void walk_wild_section
PARAMS ((lang_wild_statement_type *, const char *,
lang_input_statement_type *, callback_t, void *));
static void walk_wild_file
PARAMS ((lang_wild_statement_type *, const char *,
lang_input_statement_type *, callback_t, void *));
/* EXPORTS */ /* EXPORTS */
lang_output_section_statement_type *abs_output_section; lang_output_section_statement_type *abs_output_section;
lang_statement_list_type *stat_ptr = &statement_list; lang_statement_list_type *stat_ptr = &statement_list;
@ -192,6 +188,142 @@ stat_alloc (size)
return obstack_alloc (&stat_obstack, size); return obstack_alloc (&stat_obstack, size);
} }
/*----------------------------------------------------------------------
Generic traversal routines for finding matching sections.
*/
static void
walk_wild_section (ptr, section, file, callback, data)
lang_wild_statement_type *ptr;
const char *section;
lang_input_statement_type *file;
callback_t callback;
void *data;
{
/* Don't process sections from files which were excluded. */
if (ptr->exclude_filename != NULL)
{
boolean match;
if (wildcardp (ptr->exclude_filename))
match = fnmatch (ptr->exclude_filename, file->filename, 0) == 0 ? true : false;
else
match = strcmp (ptr->exclude_filename, file->filename) == 0 ? true : false;
if (match)
return;
}
if (file->just_syms_flag == false)
{
register asection *s;
boolean wildcard;
if (section == NULL)
wildcard = false;
else
wildcard = wildcardp (section);
for (s = file->the_bfd->sections; s != NULL; s = s->next)
{
boolean match;
if (section == NULL)
match = true;
else
{
const char *name;
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)
(*callback) (ptr, s, file, data);
}
}
}
/* Handle a wild statement for a single file F. */
static void
walk_wild_file (s, section, f, callback, data)
lang_wild_statement_type *s;
const char *section;
lang_input_statement_type *f;
callback_t callback;
void *data;
{
if (f->the_bfd == NULL
|| ! bfd_check_format (f->the_bfd, bfd_archive))
walk_wild_section (s, section, f, callback, data);
else
{
bfd *member;
/* This is an archive file. We must map each member of the
archive separately. */
member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
while (member != NULL)
{
/* When lookup_name is called, it will call the add_symbols
entry point for the archive. For each element of the
archive which is included, BFD will call ldlang_add_file,
which will set the usrdata field of the member to the
lang_input_statement. */
if (member->usrdata != NULL)
{
walk_wild_section (s, section,
(lang_input_statement_type *) member->usrdata,
callback, data);
}
member = bfd_openr_next_archived_file (f->the_bfd, member);
}
}
}
static void
walk_wild (s, section, file, callback, data)
lang_wild_statement_type *s;
const char *section;
const char *file;
callback_t callback;
void *data;
{
lang_input_statement_type *f;
if (file == (char *) NULL)
{
/* Perform the iteration over all files in the list. */
for (f = (lang_input_statement_type *) file_chain.head;
f != (lang_input_statement_type *) NULL;
f = (lang_input_statement_type *) f->next)
{
walk_wild_file (s, section, f, callback, data);
}
}
else if (wildcardp (file))
{
for (f = (lang_input_statement_type *) file_chain.head;
f != (lang_input_statement_type *) NULL;
f = (lang_input_statement_type *) f->next)
{
if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
walk_wild_file (s, section, f, callback, data);
}
}
else
{
/* Perform the iteration over a single file. */
f = lookup_name (file);
walk_wild_file (s, section, f, callback, data);
}
}
/*---------------------------------------------------------------------- /*----------------------------------------------------------------------
lang_for_each_statement walks the parse tree and calls the provided lang_for_each_statement walks the parse tree and calls the provided
function for each node function for each node
@ -1070,104 +1202,53 @@ wild_sort (wild, file, section)
NULL, in which case it is a wild card. */ NULL, in which case it is a wild card. */
static void static void
wild_section (ptr, section, file, output) output_section_callback (ptr, section, file, output)
lang_wild_statement_type *ptr; lang_wild_statement_type *ptr;
const char *section; asection *section;
lang_input_statement_type *file; lang_input_statement_type *file;
lang_output_section_statement_type *output; void *output;
{ {
lang_statement_union_type *before;
/* Don't process sections from files which were excluded. */
if (ptr->exclude_filename != NULL) /* If the wild pattern was marked KEEP, the member sections
should be as well. */
if (ptr->keep_sections)
section->flags |= SEC_KEEP;
before = wild_sort (ptr, file, section);
/* Here BEFORE points to the lang_input_section which
should follow the one we are about to add. If BEFORE
is NULL, then the section should just go at the end
of the current list. */
if (before == NULL)
wild_doit (&ptr->children, section,
(lang_output_section_statement_type *) output,
file);
else
{ {
boolean match; lang_statement_list_type list;
lang_statement_union_type **pp;
if (wildcardp (ptr->exclude_filename))
match = fnmatch (ptr->exclude_filename, file->filename, 0) == 0 ? true : false; lang_list_init (&list);
else wild_doit (&list, section,
match = strcmp (ptr->exclude_filename, file->filename) == 0 ? true : false; (lang_output_section_statement_type *) output,
file);
if (match)
return; /* If we are discarding the section, LIST.HEAD will
} be NULL. */
if (list.head != NULL)
if (file->just_syms_flag == false)
{
register asection *s;
boolean wildcard;
if (section == NULL)
wildcard = false;
else
wildcard = wildcardp (section);
for (s = file->the_bfd->sections; s != NULL; s = s->next)
{ {
boolean match; ASSERT (list.head->next == NULL);
/* Attach all sections named SECTION. If SECTION is NULL, for (pp = &ptr->children.head;
then attach all sections. *pp != before;
pp = &(*pp)->next)
Previously, if SECTION was NULL, this code did not call ASSERT (*pp != NULL);
wild_doit if the SEC_IS_COMMON flag was set for the
section. I did not understand that, and I took it out. list.head->next = *pp;
--ian@cygnus.com. */ *pp = list.head;
if (section == NULL)
match = true;
else
{
const char *name;
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)
{
lang_statement_union_type *before;
/* If the wild pattern was marked KEEP, the member sections
should be as well. */
if (ptr->keep_sections)
s->flags |= SEC_KEEP;
before = wild_sort (ptr, file, s);
/* Here BEFORE points to the lang_input_section which
should follow the one we are about to add. If BEFORE
is NULL, then the section should just go at the end
of the current list. */
if (before == NULL)
wild_doit (&ptr->children, s, output, file);
else
{
lang_statement_list_type list;
lang_statement_union_type **pp;
lang_list_init (&list);
wild_doit (&list, s, output, file);
/* If we are discarding the section, LIST.HEAD will
be NULL. */
if (list.head != NULL)
{
ASSERT (list.head->next == NULL);
for (pp = &ptr->children.head;
*pp != before;
pp = &(*pp)->next)
ASSERT (*pp != NULL);
list.head->next = *pp;
*pp = list.head;
}
}
}
} }
} }
} }
@ -1320,43 +1401,7 @@ load_symbols (entry, place)
entry->loaded = true; entry->loaded = true;
} }
/* Handle a wild statement for a single file F. */
static void
wild_file (s, section, f, output)
lang_wild_statement_type *s;
const char *section;
lang_input_statement_type *f;
lang_output_section_statement_type *output;
{
if (f->the_bfd == NULL
|| ! bfd_check_format (f->the_bfd, bfd_archive))
wild_section (s, section, f, output);
else
{
bfd *member;
/* This is an archive file. We must map each member of the
archive separately. */
member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
while (member != NULL)
{
/* When lookup_name is called, it will call the add_symbols
entry point for the archive. For each element of the
archive which is included, BFD will call ldlang_add_file,
which will set the usrdata field of the member to the
lang_input_statement. */
if (member->usrdata != NULL)
{
wild_section (s, section,
(lang_input_statement_type *) member->usrdata,
output);
}
member = bfd_openr_next_archived_file (f->the_bfd, member);
}
}
}
/* Handle a wild statement. SECTION or FILE or both may be NULL, /* Handle a wild statement. SECTION or FILE or both may be NULL,
indicating that it is a wildcard. Separate lang_input_section indicating that it is a wildcard. Separate lang_input_section
@ -1371,34 +1416,7 @@ wild (s, section, file, target, output)
const char *target; const char *target;
lang_output_section_statement_type *output; lang_output_section_statement_type *output;
{ {
lang_input_statement_type *f; walk_wild (s, section, file, output_section_callback, (void *) output);
if (file == (char *) NULL)
{
/* Perform the iteration over all files in the list */
for (f = (lang_input_statement_type *) file_chain.head;
f != (lang_input_statement_type *) NULL;
f = (lang_input_statement_type *) f->next)
{
wild_file (s, section, f, output);
}
}
else if (wildcardp (file))
{
for (f = (lang_input_statement_type *) file_chain.head;
f != (lang_input_statement_type *) NULL;
f = (lang_input_statement_type *) f->next)
{
if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
wild_file (s, section, f, output);
}
}
else
{
/* Perform the iteration over a single file */
f = lookup_name (file);
wild_file (s, section, f, output);
}
if (section != (char *) NULL if (section != (char *) NULL
&& strcmp (section, "COMMON") == 0 && strcmp (section, "COMMON") == 0
@ -3487,90 +3505,20 @@ reset_memory_regions ()
} }
} }
/* ??? At some point this traversal for GC should share code with the
traversal for manipulating the output file. */
/* Expand a wild statement for a particular FILE, marking its sections KEEP /* Expand a wild statement for a particular FILE, marking its sections KEEP
as needed. SECTION may be NULL, in which case it is a wild card. */ as needed. SECTION may be NULL, in which case it is a wild card. */
static void static void
lang_gc_wild_section (ptr, section, file) gc_section_callback (ptr, section, file, data)
lang_wild_statement_type *ptr; lang_wild_statement_type *ptr;
const char *section; asection *section;
lang_input_statement_type *file; lang_input_statement_type *file;
void *data;
{ {
if (file->just_syms_flag == false) /* If the wild pattern was marked KEEP, the member sections
{ should be as well. */
register asection *s; if (ptr->keep_sections)
boolean wildcard; section->flags |= SEC_KEEP;
if (section == NULL)
wildcard = false;
else
wildcard = wildcardp (section);
for (s = file->the_bfd->sections; s != NULL; s = s->next)
{
boolean match;
if (section == NULL)
match = true;
else
{
const char *name;
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 the wild pattern was marked KEEP, the member sections
should be as well. */
if (ptr->keep_sections)
s->flags |= SEC_KEEP;
}
}
}
}
/* Handle a wild statement for a single file F. */
static void
lang_gc_wild_file (s, section, f)
lang_wild_statement_type *s;
const char *section;
lang_input_statement_type *f;
{
if (f->the_bfd == NULL
|| ! bfd_check_format (f->the_bfd, bfd_archive))
lang_gc_wild_section (s, section, f);
else
{
bfd *member;
/* This is an archive file. We must map each member of the
archive separately. */
member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
while (member != NULL)
{
/* When lookup_name is called, it will call the add_symbols
entry point for the archive. For each element of the
archive which is included, BFD will call ldlang_add_file,
which will set the usrdata field of the member to the
lang_input_statement. */
if (member->usrdata != NULL)
{
lang_gc_wild_section (s, section,
(lang_input_statement_type *) member->usrdata);
}
member = bfd_openr_next_archived_file (f->the_bfd, member);
}
}
} }
/* Handle a wild statement, marking it against GC. SECTION or FILE or both /* Handle a wild statement, marking it against GC. SECTION or FILE or both
@ -3582,34 +3530,7 @@ lang_gc_wild (s, section, file)
const char *section; const char *section;
const char *file; const char *file;
{ {
lang_input_statement_type *f; walk_wild (s, section, file, gc_section_callback, NULL);
if (file == (char *) NULL)
{
/* Perform the iteration over all files in the list */
for (f = (lang_input_statement_type *) file_chain.head;
f != (lang_input_statement_type *) NULL;
f = (lang_input_statement_type *) f->next)
{
lang_gc_wild_file (s, section, f);
}
}
else if (wildcardp (file))
{
for (f = (lang_input_statement_type *) file_chain.head;
f != (lang_input_statement_type *) NULL;
f = (lang_input_statement_type *) f->next)
{
if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
lang_gc_wild_file (s, section, f);
}
}
else
{
/* Perform the iteration over a single file */
f = lookup_name (file);
lang_gc_wild_file (s, section, f);
}
} }
/* Iterate over sections marking them against GC. */ /* Iterate over sections marking them against GC. */