-/* ldlang.h -
-
- Copyright (C) 1991 Free Software Foundation, Inc.
-
+/* ldlang.h - linker command language support
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002
+ Free Software Foundation, Inc.
+
This file is part of GLD, the Gnu Linker.
-
+
GLD 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 1, or (at your option)
+ the Free Software Foundation; either version 2, or (at your option)
any later version.
-
+
GLD 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
+#ifndef LDLANG_H
+#define LDLANG_H
typedef enum {
lang_input_file_is_l_enum,
lang_input_file_is_marker_enum,
lang_input_file_is_fake_enum,
lang_input_file_is_search_file_enum,
- lang_input_file_is_file_enum } lang_input_file_enum_type;
+ lang_input_file_is_file_enum
+} lang_input_file_enum_type;
+
+struct _fill_type {
+ size_t size;
+ unsigned char data[1];
+};
-typedef unsigned short fill_type;
typedef struct statement_list {
union lang_statement_union *head;
union lang_statement_union **tail;
} lang_statement_list_type;
-
-
-
typedef struct memory_region_struct {
char *name;
struct memory_region_struct *next;
bfd_vma origin;
- bfd_offset length;
+ bfd_size_type length;
bfd_vma current;
- int flags;
+ bfd_size_type old_length;
+ flagword flags;
+ flagword not_flags;
boolean had_full_message;
+} lang_memory_region_type;
+
+typedef struct lang_statement_header_struct {
+ union lang_statement_union *next;
+ enum statement_enum {
+ lang_output_section_statement_enum,
+ lang_assignment_statement_enum,
+ lang_input_statement_enum,
+ lang_address_statement_enum,
+ lang_wild_statement_enum,
+ lang_input_section_enum,
+ lang_object_symbols_statement_enum,
+ lang_fill_statement_enum,
+ lang_data_statement_enum,
+ lang_reloc_statement_enum,
+ lang_target_statement_enum,
+ lang_output_statement_enum,
+ lang_padding_statement_enum,
+ lang_group_statement_enum,
+
+ lang_afile_asection_pair_statement_enum,
+ lang_constructors_statement_enum
+ } type;
+} lang_statement_header_type;
-} lang_memory_region_type ;
-
-typedef struct lang_statement_header_struct
- {
- union lang_statement_union *next;
- enum statement_enum {
- lang_output_section_statement_enum,
- lang_assignment_statement_enum,
- lang_input_statement_enum,
- lang_address_statement_enum,
- lang_wild_statement_enum,
- lang_input_section_enum,
- lang_object_symbols_statement_enum,
- lang_fill_statement_enum,
- lang_data_statement_enum,
- lang_target_statement_enum,
- lang_output_statement_enum,
- lang_padding_statement_enum,
-
- lang_afile_asection_pair_statement_enum,
- lang_constructors_statement_enum
- } type;
-
- } lang_statement_header_type;
-
-
-typedef struct
- {
- lang_statement_header_type header;
- union etree_union *exp;
- } lang_assignment_statement_type;
-
+typedef struct {
+ lang_statement_header_type header;
+ union etree_union *exp;
+} lang_assignment_statement_type;
typedef struct lang_target_statement_struct {
lang_statement_header_type header;
- CONST char *target;
+ const char *target;
} lang_target_statement_type;
-
typedef struct lang_output_statement_struct {
lang_statement_header_type header;
- CONST char *name;
+ const char *name;
} lang_output_statement_type;
+/* Section types specified in a linker script. */
+
+enum section_type {
+ normal_section,
+ dsect_section,
+ copy_section,
+ noload_section,
+ info_section,
+ overlay_section
+};
-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;
- CONST char *name;
- unsigned long subsection_alignment;
- boolean processed;
-
- asection *bfd_section;
- int flags;
- struct memory_region_struct *region;
- size_t block_value;
- fill_type fill;
- } lang_output_section_statement_type;
+/* This structure holds a list of program headers describing segments
+ in which this section should be placed. */
+struct lang_output_section_phdr_list {
+ struct lang_output_section_phdr_list *next;
+ const char *name;
+ boolean used;
+};
+
+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;
+ const char *name;
+
+ 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;
+ fill_type *fill;
+
+ int subsection_alignment; /* alignment of components */
+ int section_alignment; /* alignment of start of section */
+
+ union etree_union *load_base;
+
+ /* If non-null, an expression to evaluate after setting the section's
+ size. The expression is evaluated inside REGION (above) with '.'
+ set to the end of the section. Used in the last overlay section
+ to move '.' past all the overlaid sections. */
+ union etree_union *update_dot_tree;
+
+ struct lang_output_section_phdr_list *phdrs;
+} lang_output_section_statement_type;
typedef struct {
lang_statement_header_type header;
typedef struct {
lang_statement_header_type header;
- fill_type fill;
+ fill_type *fill;
int size;
asection *output_section;
} lang_fill_statement_type;
typedef struct {
lang_statement_header_type header;
unsigned int type;
- union etree_union *exp;
+ union etree_union *exp;
bfd_vma value;
asection *output_section;
bfd_vma output_vma;
} lang_data_statement_type;
+/* Generate a reloc in the output file. */
+
+typedef struct {
+ lang_statement_header_type header;
+
+ /* Reloc to generate. */
+ bfd_reloc_code_real_type reloc;
+
+ /* Reloc howto structure. */
+ reloc_howto_type *howto;
+
+ /* 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. */
+ const char *name;
+
+ /* Expression for addend. */
+ union etree_union *addend_exp;
+
+ /* Resolved addend. */
+ bfd_vma addend_value;
+
+ /* Output section where reloc should be performed. */
+ asection *output_section;
+
+ /* VMA within output section. */
+ bfd_vma output_vma;
+} lang_reloc_statement_type;
+
+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. */
+ const char *local_sym_name;
+
+ bfd *the_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 */
+ union lang_statement_union *next_real_file;
+ boolean is_archive;
+ /* 1 means search a set of directories for this file. */
+ boolean search_dirs_flag;
-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. */
- CONST char *local_sym_name;
-
- bfd *the_bfd;
-
- boolean closed;
- file_ptr passive_position;
-
- /* Symbol table of the file. */
- asymbol **asymbols;
- unsigned int symbol_count;
-
- /* For library members only */
-
- /* For a library, points to chain of entries for the library members. */
- struct lang_input_statement_struct *subfiles;
- /* For a library member, offset of the member within the archive.
- Zero for files that are not library members. */
- /* int starting_offset;*/
- /* Size of contents of this file, if library member. */
- bfd_size_type total_size;
- /* For library member, points to the library's own entry. */
- struct lang_input_statement_struct *superfile;
- /* For library member, points to next entry for next member. */
- struct lang_input_statement_struct *chain;
- /* 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 */
- union lang_statement_union *next_real_file;
-
- boolean is_archive;
-
- /* 1 means search a set of directories for this file. */
- boolean search_dirs_flag;
-
- /* 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. */
-
- boolean just_syms_flag;
-
- boolean loaded;
-
-
- /* unsigned int globals_in_this_file;*/
- CONST char *target;
- boolean real;
-
- asection *common_section;
- asection *common_output_section;
- } lang_input_statement_type;
+ /* 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. */
+
+ boolean just_syms_flag;
+
+ /* Whether to search for this entry as a dynamic archive. */
+ boolean dynamic;
+
+ /* Whether to include the entire contents of an archive. */
+ boolean whole_archive;
+
+ boolean loaded;
+
+#if 0
+ unsigned int globals_in_this_file;
+#endif
+ const char *target;
+ boolean real;
+} lang_input_statement_type;
typedef struct {
lang_statement_header_type header;
asection *section;
lang_input_statement_type *ifile;
-
-} lang_input_section_type;
+} lang_input_section_type;
typedef struct {
lang_statement_header_type header;
typedef struct lang_wild_statement_struct {
lang_statement_header_type header;
- CONST char *section_name;
- CONST char *filename;
+ const char *filename;
+ boolean filenames_sorted;
+ struct wildcard_list *section_list;
+ boolean keep_sections;
lang_statement_list_type children;
} lang_wild_statement_type;
typedef struct lang_address_statement_struct {
lang_statement_header_type header;
- CONST char *section_name;
- union etree_union *address;
+ const char *section_name;
+ union etree_union *address;
} lang_address_statement_type;
typedef struct {
bfd_vma output_offset;
size_t size;
asection *output_section;
- fill_type fill;
+ fill_type *fill;
} lang_padding_statement_type;
-typedef union lang_statement_union
- {
- lang_statement_header_type header;
- union lang_statement_union *next;
- lang_wild_statement_type wild_statement;
- lang_data_statement_type data_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_output_statement_type output_statement;
- lang_input_section_type input_section;
- lang_common_statement_type common_statement;
- lang_object_symbols_statement_type object_symbols_statement;
- lang_fill_statement_type fill_statement;
- lang_padding_statement_type padding_statement;
- } lang_statement_union_type;
-
-
-
-PROTO(void,lang_init,(void));
-PROTO(struct memory_region_struct ,
- *lang_memory_region_lookup,(CONST
- char *CONST));
-
-
-PROTO(void ,lang_map,(void));
-PROTO(void,lang_set_flags,(int *, CONST char *));
-PROTO(void,lang_add_output,(CONST char *));
-
-PROTO(void,lang_final,(void));
-PROTO(struct symbol_cache_entry *,create_symbol,(CONST char *, unsigned int, struct sec *));
-PROTO(void ,lang_process,(void));
-PROTO(void ,lang_section_start,(CONST char *, union etree_union *));
-PROTO(void,lang_add_entry,(CONST char *));
-PROTO(void,lang_add_target,(CONST char *));
-PROTO(void,lang_add_wild,(CONST char *CONST , CONST char *CONST));
-PROTO(void,lang_add_map,(CONST char *));
-PROTO(void,lang_add_fill,(int));
-PROTO(void,lang_add_assignment,(union etree_union *));
-PROTO(void,lang_add_attribute,(enum statement_enum));
-PROTO(void,lang_startup,(CONST char *));
-PROTO(void,lang_float,(enum bfd_boolean));
-PROTO(void,lang_leave_output_section_statement,(bfd_vma, CONST char *));
-PROTO(void,lang_abs_symbol_at_end_of,(CONST char *, CONST char *));
-PROTO(void,lang_abs_symbol_at_beginning_of,(CONST char *, CONST char *));
-PROTO(void,lang_statement_append,(struct statement_list *, union lang_statement_union *, union lang_statement_union **));
-PROTO(void, lang_for_each_file,(void (*dothis)(lang_input_statement_type *)));
-
-
-#define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
- extern lang_statement_list_type file_chain; \
+/* A group statement collects a set of libraries together. The
+ libraries are searched multiple times, until no new undefined
+ symbols are found. The effect is to search a group of libraries as
+ though they were a single library. */
+
+typedef struct {
+ lang_statement_header_type header;
+ lang_statement_list_type children;
+} lang_group_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_output_statement_type output_statement;
+ lang_input_section_type input_section;
+ lang_common_statement_type common_statement;
+ lang_object_symbols_statement_type object_symbols_statement;
+ lang_fill_statement_type fill_statement;
+ lang_padding_statement_type padding_statement;
+ lang_group_statement_type group_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 *next;
+ const char *name;
+ unsigned long type;
+ boolean filehdr;
+ boolean phdrs;
+ etree_type *at;
+ etree_type *flags;
+};
+
+/* This structure is used to hold a list of sections which may not
+ cross reference each other. */
+
+struct lang_nocrossref {
+ struct lang_nocrossref *next;
+ const char *name;
+};
+
+/* The list of nocrossref lists. */
+
+struct lang_nocrossrefs {
+ struct lang_nocrossrefs *next;
+ struct lang_nocrossref *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 *next;
+ const char *name;
+};
+
+extern struct unique_sections *unique_section_list;
+
+extern lang_output_section_statement_type *abs_output_section;
+extern lang_statement_list_type lang_output_section_statement;
+extern boolean lang_has_input_file;
+extern etree_type *base;
+extern lang_statement_list_type *stat_ptr;
+extern boolean delete_output_file_on_failure;
+
+extern struct bfd_sym_chain entry_symbol;
+extern const char *entry_section;
+extern boolean entry_from_cmdline;
+extern lang_statement_list_type file_chain;
+
+extern void lang_init PARAMS ((void));
+extern struct memory_region_struct *lang_memory_region_lookup
+ PARAMS ((const char *const));
+extern struct memory_region_struct *lang_memory_region_default
+ PARAMS ((asection *));
+extern void lang_map PARAMS ((void));
+extern void lang_set_flags PARAMS ((lang_memory_region_type *, const char *,
+ int));
+extern void lang_add_output PARAMS ((const char *, int from_script));
+extern lang_output_section_statement_type *lang_enter_output_section_statement
+ PARAMS ((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 *));
+extern void lang_final PARAMS ((void));
+extern void lang_process PARAMS ((void));
+extern void lang_section_start PARAMS ((const char *, union etree_union *));
+extern void lang_add_entry PARAMS ((const char *, boolean));
+extern void lang_add_target PARAMS ((const char *));
+extern void lang_add_wild
+ PARAMS ((struct wildcard_spec *, struct wildcard_list *, boolean));
+extern void lang_add_map PARAMS ((const char *));
+extern void lang_add_fill PARAMS ((fill_type *));
+extern lang_assignment_statement_type * lang_add_assignment PARAMS ((union etree_union *));
+extern void lang_add_attribute PARAMS ((enum statement_enum));
+extern void lang_startup PARAMS ((const char *));
+extern void lang_float PARAMS ((enum bfd_boolean));
+extern void lang_leave_output_section_statement
+ PARAMS ((fill_type *, const char *, struct lang_output_section_phdr_list *,
+ const char *));
+extern void lang_abs_symbol_at_end_of PARAMS ((const char *, const char *));
+extern void lang_abs_symbol_at_beginning_of PARAMS ((const char *,
+ const char *));
+extern void lang_statement_append PARAMS ((struct statement_list *,
+ union lang_statement_union *,
+ union lang_statement_union **));
+extern void lang_for_each_input_file
+ PARAMS ((void (*dothis) (lang_input_statement_type *)));
+extern void lang_for_each_file
+ PARAMS ((void (*dothis) (lang_input_statement_type *)));
+extern void lang_reset_memory_regions PARAMS ((void));
+extern bfd_vma lang_do_assignments
+ PARAMS ((lang_statement_union_type * s,
+ lang_output_section_statement_type *output_section_statement,
+ fill_type *fill,
+ bfd_vma dot));
+
+#define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
lang_input_statement_type *statement; \
for (statement = (lang_input_statement_type *)file_chain.head;\
statement != (lang_input_statement_type *)NULL; \
statement = (lang_input_statement_type *)statement->next)\
-
-#define LANG_FOR_EACH_INPUT_SECTION(statement, abfd, section, x) \
- { extern lang_statement_list_type file_chain; \
- lang_input_statement_type *statement; \
- for (statement = (lang_input_statement_type *)file_chain.head;\
- statement != (lang_input_statement_type *)NULL; \
- statement = (lang_input_statement_type *)statement->next)\
- { \
- asection *section; \
- bfd *abfd = statement->the_bfd; \
- for (section = abfd->sections; \
- section != (asection *)NULL; \
- section = section->next) { \
- x; \
- } \
- } \
- }
-
-#define LANG_FOR_EACH_OUTPUT_SECTION(section, x) \
- { extern bfd *output_bfd; \
- asection *section; \
- for (section = output_bfd->sections; \
- section != (asection *)NULL; \
- section = section->next) \
- { x; } \
- }
-
-
-PROTO(void, lang_process,(void));
-PROTO(void, ldlang_add_file,(lang_input_statement_type *));
-
-PROTO(lang_output_section_statement_type
- *,lang_output_section_find,(CONST char * CONST));
-
-PROTO(lang_input_statement_type *,
- lang_add_input_file,(CONST char *name,
- lang_input_file_enum_type file_type,
- CONST char *target));
-PROTO(lang_output_section_statement_type *,
- lang_output_section_statement_lookup,(CONST char * CONST name));
-
-PROTO(void, ldlang_add_undef,(CONST char *CONST name));
-PROTO(void, lang_add_output_format,(CONST char *));
-
-
-void EXFUN(lang_list_init,( lang_statement_list_type*));
-
-void EXFUN(lang_add_data,(int type, union etree_union *));
-
-void EXFUN(lang_for_each_statement,(void (*func)()));
-
-PTR EXFUN(stat_alloc,(size_t size));
+
+extern void lang_process PARAMS ((void));
+extern void ldlang_add_file PARAMS ((lang_input_statement_type *));
+extern lang_output_section_statement_type *lang_output_section_find
+ PARAMS ((const char * const));
+extern lang_input_statement_type *lang_add_input_file
+ PARAMS ((const char *name, lang_input_file_enum_type file_type,
+ const char *target));
+extern void lang_add_keepsyms_file PARAMS ((const char *filename));
+extern lang_output_section_statement_type *
+ lang_output_section_statement_lookup PARAMS ((const char * const name));
+extern void ldlang_add_undef PARAMS ((const char *const name));
+extern void lang_add_output_format PARAMS ((const char *, const char *,
+ const char *, int from_script));
+extern void lang_list_init PARAMS ((lang_statement_list_type*));
+extern void lang_add_data PARAMS ((int type, union etree_union *));
+extern void lang_add_reloc
+ PARAMS ((bfd_reloc_code_real_type reloc, reloc_howto_type *howto,
+ asection *section, const char *name, union etree_union *addend));
+extern void lang_for_each_statement
+ PARAMS ((void (*func) (lang_statement_union_type *)));
+extern PTR stat_alloc PARAMS ((size_t size));
+extern void dprint_statement PARAMS ((lang_statement_union_type *, int));
+extern bfd_vma lang_size_sections
+ PARAMS ((lang_statement_union_type *s,
+ lang_output_section_statement_type *output_section_statement,
+ lang_statement_union_type **prev, fill_type *fill,
+ bfd_vma dot, boolean *relax));
+extern void lang_enter_group PARAMS ((void));
+extern void lang_leave_group PARAMS ((void));
+extern void lang_add_section
+ PARAMS ((lang_statement_list_type *ptr, asection *section,
+ lang_output_section_statement_type *output,
+ lang_input_statement_type *file));
+extern void lang_new_phdr
+ PARAMS ((const char *, etree_type *, boolean, boolean, etree_type *,
+ etree_type *));
+extern void lang_add_nocrossref PARAMS ((struct lang_nocrossref *));
+extern void lang_enter_overlay PARAMS ((etree_type *));
+extern void lang_enter_overlay_section PARAMS ((const char *));
+extern void lang_leave_overlay_section
+ PARAMS ((fill_type *, struct lang_output_section_phdr_list *));
+extern void lang_leave_overlay
+ PARAMS ((etree_type *, int, fill_type *, const char *,
+ struct 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
+ PARAMS ((struct bfd_elf_version_expr *, const char *, const char *));
+extern struct bfd_elf_version_tree *lang_new_vers_node
+ PARAMS ((struct bfd_elf_version_expr *, struct bfd_elf_version_expr *));
+extern struct bfd_elf_version_deps *lang_add_vers_depend
+ PARAMS ((struct bfd_elf_version_deps *, const char *));
+extern void lang_register_vers_node
+ PARAMS ((const char *, struct bfd_elf_version_tree *,
+ struct bfd_elf_version_deps *));
+boolean unique_section_p PARAMS ((const char *));
+extern void lang_add_unique PARAMS ((const char *));
+extern const char *lang_get_output_target PARAMS ((void));
+
+#endif
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