/* ldlang.h - linker command language support
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
- This file is part of GLD, the Gnu Linker.
+ This file is part of the GNU Binutils.
- GLD is free software; you can redistribute it and/or modify
+ This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
- GLD is distributed in the hope that it will be useful,
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GLD; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef LDLANG_H
#define LDLANG_H
#define DEFAULT_MEMORY_REGION "*default*"
-typedef enum {
+typedef enum
+{
lang_input_file_is_l_enum,
lang_input_file_is_symbols_only_enum,
lang_input_file_is_marker_enum,
lang_input_file_is_file_enum
} lang_input_file_enum_type;
-struct _fill_type {
+struct _fill_type
+{
size_t size;
unsigned char data[1];
};
-typedef struct statement_list {
+typedef struct statement_list
+{
union lang_statement_union *head;
union lang_statement_union **tail;
} lang_statement_list_type;
-typedef struct memory_region_struct {
+typedef struct memory_region_struct
+{
char *name;
struct memory_region_struct *next;
bfd_vma origin;
bfd_size_type length;
bfd_vma current;
- bfd_size_type old_length;
+ union lang_statement_union *last_os;
flagword flags;
flagword not_flags;
bfd_boolean had_full_message;
} lang_memory_region_type;
-typedef struct lang_statement_header_struct {
+typedef struct lang_statement_header_struct
+{
union lang_statement_union *next;
- enum statement_enum {
+ enum statement_enum
+ {
lang_output_section_statement_enum,
lang_assignment_statement_enum,
lang_input_statement_enum,
lang_output_statement_enum,
lang_padding_statement_enum,
lang_group_statement_enum,
-
- lang_afile_asection_pair_statement_enum,
+ lang_insert_statement_enum,
lang_constructors_statement_enum
} type;
} lang_statement_header_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
union etree_union *exp;
} lang_assignment_statement_type;
-typedef struct lang_target_statement_struct {
+typedef struct lang_target_statement_struct
+{
lang_statement_header_type header;
const char *target;
} lang_target_statement_type;
-typedef struct lang_output_statement_struct {
+typedef struct lang_output_statement_struct
+{
lang_statement_header_type header;
const char *name;
} lang_output_statement_type;
/* Section types specified in a linker script. */
-enum section_type {
+enum section_type
+{
normal_section,
- dsect_section,
- copy_section,
+ overlay_section,
noload_section,
- info_section,
- overlay_section
+ noalloc_section
};
-/* This structure holds a list of program headers describing segments
- in which this section should be placed. */
+/* This structure holds a list of program headers describing
+ segments in which this section should be placed. */
-struct lang_output_section_phdr_list {
+typedef struct lang_output_section_phdr_list
+{
struct lang_output_section_phdr_list *next;
const char *name;
bfd_boolean used;
-};
+} lang_output_section_phdr_list;
-typedef struct lang_output_section_statement_struct {
+typedef struct lang_output_section_statement_struct
+{
lang_statement_header_type header;
- union etree_union *addr_tree;
lang_statement_list_type children;
- const char *memspec;
- union lang_statement_union *next;
+ struct lang_output_section_statement_struct *next;
+ struct lang_output_section_statement_struct *prev;
const char *name;
-
- bfd_boolean processed;
-
asection *bfd_section;
- flagword flags; /* Or together of all input sections */
- enum section_type sectype;
- struct memory_region_struct *region;
- struct memory_region_struct *lma_region;
- size_t block_value;
+ lang_memory_region_type *region;
+ lang_memory_region_type *lma_region;
fill_type *fill;
-
- int subsection_alignment; /* alignment of components */
- int section_alignment; /* alignment of start of section */
-
+ union etree_union *addr_tree;
union etree_union *load_base;
/* If non-null, an expression to evaluate after setting the section's
to move '.' past all the overlaid sections. */
union etree_union *update_dot_tree;
- struct lang_output_section_phdr_list *phdrs;
+ lang_output_section_phdr_list *phdrs;
+
+ unsigned int block_value;
+ int subsection_alignment; /* Alignment of components. */
+ int section_alignment; /* Alignment of start of section. */
+ int constraint;
+ flagword flags;
+ enum section_type sectype;
+ unsigned int processed_vma : 1;
+ unsigned int processed_lma : 1;
+ unsigned int all_input_readonly : 1;
+ /* If this section should be ignored. */
+ unsigned int ignored : 1;
+ /* If there is a symbol relative to this section. */
+ unsigned int section_relative_symbol : 1;
} lang_output_section_statement_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
} lang_common_statement_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
} lang_object_symbols_statement_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
fill_type *fill;
int size;
asection *output_section;
} lang_fill_statement_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
unsigned int type;
union etree_union *exp;
bfd_vma value;
asection *output_section;
- bfd_vma output_vma;
+ bfd_vma output_offset;
} lang_data_statement_type;
/* Generate a reloc in the output file. */
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
/* Reloc to generate. */
/* Reloc howto structure. */
reloc_howto_type *howto;
- /* Section to generate reloc against. Exactly one of section and
- name must be NULL. */
+ /* Section to generate reloc against.
+ Exactly one of section and name must be NULL. */
asection *section;
- /* Name of symbol to generate reloc against. Exactly one of section
- and name must be NULL. */
+ /* Name of symbol to generate reloc against.
+ Exactly one of section and name must be NULL. */
const char *name;
/* Expression for addend. */
/* Output section where reloc should be performed. */
asection *output_section;
- /* VMA within output section. */
- bfd_vma output_vma;
+ /* Offset within output section. */
+ bfd_vma output_offset;
} lang_reloc_statement_type;
-typedef struct lang_input_statement_struct {
+typedef struct lang_input_statement_struct
+{
lang_statement_header_type header;
/* Name of this file. */
const char *filename;
- /* Name to use for the symbol giving address of text start */
- /* Usually the same as filename, but for a file spec'd with -l
- this is the -l switch itself rather than the filename. */
+ /* Name to use for the symbol giving address of text start.
+ Usually the same as filename, but for a file spec'd with
+ -l this is the -l switch itself rather than the filename. */
const char *local_sym_name;
bfd *the_bfd;
- bfd_boolean closed;
- file_ptr passive_position;
-
- /* Symbol table of the file. */
- asymbol **asymbols;
- unsigned int symbol_count;
-
/* Point to the next file - whatever it is, wanders up and down
archives */
-
union lang_statement_union *next;
- /* Point to the next file, but skips archive contents */
+
+ /* Point to the next file, but skips archive contents. */
union lang_statement_union *next_real_file;
- bfd_boolean is_archive;
+ const char *target;
+
+ unsigned int is_archive : 1;
/* 1 means search a set of directories for this file. */
- bfd_boolean search_dirs_flag;
+ unsigned int search_dirs_flag : 1;
/* 1 means this was found in a search directory marked as sysrooted,
if search_dirs_flag is false, otherwise, that it should be
searched in ld_sysroot before any other location, as long as it
starts with a slash. */
- bfd_boolean sysrooted;
+ unsigned int sysrooted : 1;
/* 1 means this is base file of incremental load.
Do not load this file's text or data.
Also default text_start to after this file's bss. */
-
- bfd_boolean just_syms_flag;
+ unsigned int just_syms_flag : 1;
/* Whether to search for this entry as a dynamic archive. */
- bfd_boolean dynamic;
+ unsigned int dynamic : 1;
+
+ /* Whether DT_NEEDED tags should be added for dynamic libraries in
+ DT_NEEDED tags from this entry. */
+ unsigned int add_needed : 1;
+
+ /* Whether this entry should cause a DT_NEEDED tag only when
+ satisfying references from regular files, or always. */
+ unsigned int as_needed : 1;
/* Whether to include the entire contents of an archive. */
- bfd_boolean whole_archive;
+ unsigned int whole_archive : 1;
- bfd_boolean loaded;
+ unsigned int loaded : 1;
-#if 0
- unsigned int globals_in_this_file;
-#endif
- const char *target;
- bfd_boolean real;
+ unsigned int real : 1;
} lang_input_statement_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
asection *section;
- lang_input_statement_type *ifile;
-
} lang_input_section_type;
-typedef struct {
- lang_statement_header_type header;
+typedef struct lang_wild_statement_struct lang_wild_statement_type;
+
+typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *,
+ asection *, lang_input_statement_type *, void *);
+
+typedef void (*walk_wild_section_handler_t) (lang_wild_statement_type *,
+ lang_input_statement_type *,
+ callback_t callback,
+ void *data);
+
+typedef bfd_boolean (*lang_match_sec_type_func) (bfd *, const asection *,
+ bfd *, const asection *);
+
+/* Binary search tree structure to efficiently sort sections by
+ name. */
+typedef struct lang_section_bst
+{
asection *section;
- union lang_statement_union *file;
-} lang_afile_asection_pair_statement_type;
+ struct lang_section_bst *left;
+ struct lang_section_bst *right;
+} lang_section_bst_type;
-typedef struct lang_wild_statement_struct {
+struct lang_wild_statement_struct
+{
lang_statement_header_type header;
const char *filename;
bfd_boolean filenames_sorted;
struct wildcard_list *section_list;
bfd_boolean keep_sections;
lang_statement_list_type children;
-} lang_wild_statement_type;
-typedef struct lang_address_statement_struct {
+ walk_wild_section_handler_t walk_wild_section_handler;
+ struct wildcard_list *handler_data[4];
+ lang_section_bst_type *tree;
+};
+
+typedef struct lang_address_statement_struct
+{
lang_statement_header_type header;
const char *section_name;
union etree_union *address;
+ const segment_type *segment;
} lang_address_statement_type;
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
bfd_vma output_offset;
size_t size;
symbols are found. The effect is to search a group of libraries as
though they were a single library. */
-typedef struct {
+typedef struct
+{
lang_statement_header_type header;
lang_statement_list_type children;
} lang_group_statement_type;
-typedef union lang_statement_union {
+typedef struct
+{
+ lang_statement_header_type header;
+ const char *where;
+ bfd_boolean is_before;
+} lang_insert_statement_type;
+
+typedef union lang_statement_union
+{
lang_statement_header_type header;
lang_wild_statement_type wild_statement;
lang_data_statement_type data_statement;
lang_reloc_statement_type reloc_statement;
lang_address_statement_type address_statement;
lang_output_section_statement_type output_section_statement;
- lang_afile_asection_pair_statement_type afile_asection_pair_statement;
lang_assignment_statement_type assignment_statement;
lang_input_statement_type input_statement;
lang_target_statement_type target_statement;
lang_fill_statement_type fill_statement;
lang_padding_statement_type padding_statement;
lang_group_statement_type group_statement;
+ lang_insert_statement_type insert_statement;
} lang_statement_union_type;
/* This structure holds information about a program header, from the
PHDRS command in the linker script. */
-struct lang_phdr {
+struct lang_phdr
+{
struct lang_phdr *next;
const char *name;
unsigned long type;
etree_type *flags;
};
+extern struct lang_phdr *lang_phdr_list;
+
/* This structure is used to hold a list of sections which may not
cross reference each other. */
-struct lang_nocrossref {
+typedef struct lang_nocrossref
+{
struct lang_nocrossref *next;
const char *name;
-};
+} lang_nocrossref_type;
/* The list of nocrossref lists. */
-struct lang_nocrossrefs {
+struct lang_nocrossrefs
+{
struct lang_nocrossrefs *next;
- struct lang_nocrossref *list;
+ lang_nocrossref_type *list;
};
extern struct lang_nocrossrefs *nocrossref_list;
/* This structure is used to hold a list of input section names which
will not match an output section in the linker script. */
-struct unique_sections {
+struct unique_sections
+{
struct unique_sections *next;
const char *name;
};
/* This structure records symbols for which we need to keep track of
definedness for use in the DEFINED () test. */
-struct lang_definedness_hash_entry {
+struct lang_definedness_hash_entry
+{
struct bfd_hash_entry root;
int iteration;
};
-extern struct unique_sections *unique_section_list;
+/* Used by place_orphan to keep track of orphan sections and statements. */
+
+struct orphan_save {
+ const char *name;
+ flagword flags;
+ lang_output_section_statement_type *os;
+ asection **section;
+ lang_statement_union_type **stmt;
+ lang_output_section_statement_type **os_tail;
+};
extern lang_output_section_statement_type *abs_output_section;
extern lang_statement_list_type lang_output_section_statement;
extern const char *entry_section;
extern bfd_boolean entry_from_cmdline;
extern lang_statement_list_type file_chain;
+extern lang_statement_list_type input_file_chain;
extern int lang_statement_iteration;
extern void lang_init
(void);
-extern struct memory_region_struct *lang_memory_region_lookup
+extern void lang_finish
+ (void);
+extern lang_memory_region_type *lang_memory_region_lookup
(const char *const, bfd_boolean);
-extern struct memory_region_struct *lang_memory_region_default
+extern lang_memory_region_type *lang_memory_region_default
(asection *);
extern void lang_map
(void);
(const char *output_section_statement_name,
etree_type *address_exp,
enum section_type sectype,
- bfd_vma block_value,
etree_type *align,
etree_type *subalign,
- etree_type *);
+ etree_type *, int);
extern void lang_final
(void);
extern void lang_process
(void);
extern void lang_section_start
- (const char *, union etree_union *);
+ (const char *, union etree_union *, const segment_type *);
extern void lang_add_entry
(const char *, bfd_boolean);
+extern void lang_default_entry
+ (const char *);
extern void lang_add_target
(const char *);
extern void lang_add_wild
extern void lang_float
(bfd_boolean);
extern void lang_leave_output_section_statement
- (fill_type *, const char *, struct lang_output_section_phdr_list *,
+ (fill_type *, const char *, lang_output_section_phdr_list *,
const char *);
extern void lang_abs_symbol_at_end_of
(const char *, const char *);
extern void lang_abs_symbol_at_beginning_of
(const char *, const char *);
extern void lang_statement_append
- (struct statement_list *, union lang_statement_union *,
- union lang_statement_union **);
+ (lang_statement_list_type *, lang_statement_union_type *,
+ lang_statement_union_type **);
extern void lang_for_each_input_file
(void (*dothis) (lang_input_statement_type *));
extern void lang_for_each_file
extern void lang_reset_memory_regions
(void);
extern void lang_do_assignments
- (lang_statement_union_type *, lang_output_section_statement_type *,
- fill_type *, bfd_vma);
+ (void);
#define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
lang_input_statement_type *statement; \
statement != (lang_input_statement_type *) NULL; \
statement = (lang_input_statement_type *) statement->next) \
+#define lang_output_section_find(NAME) \
+ lang_output_section_statement_lookup (NAME, 0, FALSE)
+
extern void lang_process
(void);
extern void ldlang_add_file
(lang_input_statement_type *);
-extern lang_output_section_statement_type *lang_output_section_find
- (const char * const);
+extern lang_output_section_statement_type *lang_output_section_find_by_flags
+ (const asection *, lang_output_section_statement_type **,
+ lang_match_sec_type_func);
+extern lang_output_section_statement_type *lang_insert_orphan
+ (asection *, const char *, int, lang_output_section_statement_type *,
+ struct orphan_save *, etree_type *, lang_statement_list_type *);
extern lang_input_statement_type *lang_add_input_file
(const char *, lang_input_file_enum_type, const char *);
extern void lang_add_keepsyms_file
(const char *);
-extern lang_output_section_statement_type *
- lang_output_section_statement_lookup
- (const char *const);
+extern lang_output_section_statement_type *lang_output_section_statement_lookup
+ (const char *const, int, bfd_boolean);
extern void ldlang_add_undef
(const char *const);
extern void lang_add_output_format
(const char *, const char *, const char *, int);
extern void lang_list_init
(lang_statement_list_type *);
+extern void push_stat_ptr
+ (lang_statement_list_type *);
+extern void pop_stat_ptr
+ (void);
extern void lang_add_data
(int type, union etree_union *);
extern void lang_add_reloc
(void (*) (lang_statement_union_type *));
extern void *stat_alloc
(size_t);
+extern void strip_excluded_output_sections
+ (void);
extern void dprint_statement
(lang_statement_union_type *, int);
-extern bfd_vma lang_size_sections
- (lang_statement_union_type *, lang_output_section_statement_type *,
- lang_statement_union_type **, fill_type *, bfd_vma, bfd_boolean *,
- bfd_boolean);
+extern void lang_size_sections
+ (bfd_boolean *, bfd_boolean);
+extern void one_lang_size_sections_pass
+ (bfd_boolean *, bfd_boolean);
+extern void lang_add_insert
+ (const char *, int);
extern void lang_enter_group
(void);
extern void lang_leave_group
(void);
extern void lang_add_section
(lang_statement_list_type *, asection *,
- lang_output_section_statement_type *, lang_input_statement_type *);
+ lang_output_section_statement_type *);
extern void lang_new_phdr
(const char *, etree_type *, bfd_boolean, bfd_boolean, etree_type *,
etree_type *);
extern void lang_add_nocrossref
- (struct lang_nocrossref *);
+ (lang_nocrossref_type *);
extern void lang_enter_overlay
(etree_type *, etree_type *);
extern void lang_enter_overlay_section
(const char *);
extern void lang_leave_overlay_section
- (fill_type *, struct lang_output_section_phdr_list *);
+ (fill_type *, lang_output_section_phdr_list *);
extern void lang_leave_overlay
(etree_type *, int, fill_type *, const char *,
- struct lang_output_section_phdr_list *, const char *);
+ lang_output_section_phdr_list *, const char *);
extern struct bfd_elf_version_tree *lang_elf_version_info;
extern struct bfd_elf_version_expr *lang_new_vers_pattern
- (struct bfd_elf_version_expr *, const char *, const char *);
+ (struct bfd_elf_version_expr *, const char *, const char *, bfd_boolean);
extern struct bfd_elf_version_tree *lang_new_vers_node
(struct bfd_elf_version_expr *, struct bfd_elf_version_expr *);
extern struct bfd_elf_version_deps *lang_add_vers_depend
(struct bfd_elf_version_deps *, const char *);
extern void lang_register_vers_node
(const char *, struct bfd_elf_version_tree *, struct bfd_elf_version_deps *);
-bfd_boolean unique_section_p
- (const char *);
+extern void lang_append_dynamic_list (struct bfd_elf_version_expr *);
+extern void lang_append_dynamic_list_cpp_typeinfo (void);
+extern void lang_append_dynamic_list_cpp_new (void);
extern void lang_add_unique
(const char *);
extern const char *lang_get_output_target
extern void lang_update_definedness
(const char *, struct bfd_link_hash_entry *);
+extern void add_excluded_libs (const char *);
+extern bfd_boolean load_symbols
+ (lang_input_statement_type *, lang_statement_list_type *);
+
+extern bfd_boolean
+ldlang_override_segment_assignment
+ (struct bfd_link_info *, bfd *, asection *, asection *, bfd_boolean);
+
#endif