[deliverable/binutils-gdb.git] / ld / ldlang.h

/* 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 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, 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_symbols_only_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;

typedef unsigned int 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_size_type length;
  bfd_vma current;
  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;

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;
} lang_target_statement_type;

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 {
  normal_section,
  dsect_section,
  copy_section,
  noload_section,
  info_section,
  overlay_section
};

/* 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;

  struct lang_output_section_phdr_list *phdrs;
} lang_output_section_statement_type;

typedef struct {
  lang_statement_header_type header;
} lang_common_statement_type;

typedef struct {
  lang_statement_header_type header;
} lang_object_symbols_statement_type;

typedef struct {
  lang_statement_header_type header;
  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;
  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;

  /* 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;

typedef struct {
  lang_statement_header_type header;
  asection *section;
  union lang_statement_union *file;
} lang_afile_asection_pair_statement_type;

typedef struct lang_wild_statement_struct {
  lang_statement_header_type header;
  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;
} lang_address_statement_type;

typedef struct {
  lang_statement_header_type header;
  bfd_vma output_offset;
  size_t size;
  asection *output_section;
  fill_type fill;
} lang_padding_statement_type;

/* 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 const char *entry_symbol;
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 ((int));
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 ((bfd_vma, 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)\

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 *, etree_type *, int));
extern void lang_enter_overlay_section PARAMS ((const char *));
extern void lang_leave_overlay_section
  PARAMS ((bfd_vma, struct lang_output_section_phdr_list *));
extern void lang_leave_overlay
  PARAMS ((bfd_vma, 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_regex
  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 *));

#endif
Commit	Line	Data
252b5132	1	/* ldlang.h - linker command language support
a2b64bed	2	Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
e3dc8847	3	2001, 2002
aa8804e4	4	Free Software Foundation, Inc.
5cc18311	5
252b5132	6	This file is part of GLD, the Gnu Linker.
5cc18311	7
252b5132 RH	8	GLD is free software; you can redistribute it and/or modify
252b5132 RH	9	it under the terms of the GNU General Public License as published by
e3dc8847	10	the Free Software Foundation; either version 2, or (at your option)
252b5132	11	any later version.
5cc18311	12
252b5132 RH	13	GLD is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
5cc18311	17
252b5132 RH	18	You should have received a copy of the GNU General Public License
	19	along with GLD; see the file COPYING. If not, write to the Free
	20	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
	21	02111-1307, USA. */
	22
	23	#ifndef LDLANG_H
	24	#define LDLANG_H
	25
89cdebba	26	typedef enum {
252b5132 RH	27	lang_input_file_is_l_enum,
	28	lang_input_file_is_symbols_only_enum,
	29	lang_input_file_is_marker_enum,
	30	lang_input_file_is_fake_enum,
	31	lang_input_file_is_search_file_enum,
	32	lang_input_file_is_file_enum
	33	} lang_input_file_enum_type;
	34
	35	typedef unsigned int fill_type;
89cdebba KH	36
89cdebba KH	37	typedef struct statement_list {
252b5132 RH	38	union lang_statement_union *head;
	39	union lang_statement_union **tail;
	40	} lang_statement_list_type;
	41
89cdebba	42	typedef struct memory_region_struct {
252b5132 RH	43	char *name;
	44	struct memory_region_struct *next;
	45	bfd_vma origin;
	46	bfd_size_type length;
	47	bfd_vma current;
	48	bfd_size_type old_length;
	49	flagword flags;
	50	flagword not_flags;
	51	boolean had_full_message;
89cdebba KH	52	} lang_memory_region_type;
	53
	54	typedef struct lang_statement_header_struct {
	55	union lang_statement_union *next;
	56	enum statement_enum {
	57	lang_output_section_statement_enum,
	58	lang_assignment_statement_enum,
	59	lang_input_statement_enum,
	60	lang_address_statement_enum,
	61	lang_wild_statement_enum,
	62	lang_input_section_enum,
	63	lang_object_symbols_statement_enum,
	64	lang_fill_statement_enum,
	65	lang_data_statement_enum,
	66	lang_reloc_statement_enum,
	67	lang_target_statement_enum,
	68	lang_output_statement_enum,
	69	lang_padding_statement_enum,
	70	lang_group_statement_enum,
	71
	72	lang_afile_asection_pair_statement_enum,
	73	lang_constructors_statement_enum
	74	} type;
252b5132 RH	75	} lang_statement_header_type;
252b5132 RH	76
89cdebba	77	typedef struct {
252b5132 RH	78	lang_statement_header_type header;
	79	union etree_union *exp;
	80	} lang_assignment_statement_type;
	81
89cdebba	82	typedef struct lang_target_statement_struct {
252b5132 RH	83	lang_statement_header_type header;
	84	const char *target;
	85	} lang_target_statement_type;
	86
89cdebba	87	typedef struct lang_output_statement_struct {
252b5132 RH	88	lang_statement_header_type header;
	89	const char *name;
	90	} lang_output_statement_type;
	91
	92	/* Section types specified in a linker script. */
	93
89cdebba	94	enum section_type {
252b5132 RH	95	normal_section,
	96	dsect_section,
	97	copy_section,
	98	noload_section,
	99	info_section,
	100	overlay_section
	101	};
	102
	103	/* This structure holds a list of program headers describing segments
	104	in which this section should be placed. */
	105
89cdebba	106	struct lang_output_section_phdr_list {
252b5132 RH	107	struct lang_output_section_phdr_list *next;
	108	const char *name;
	109	boolean used;
	110	};
	111
89cdebba	112	typedef struct lang_output_section_statement_struct {
252b5132 RH	113	lang_statement_header_type header;
	114	union etree_union *addr_tree;
	115	lang_statement_list_type children;
	116	const char *memspec;
	117	union lang_statement_union *next;
	118	const char *name;
	119
	120	boolean processed;
5cc18311	121
252b5132 RH	122	asection *bfd_section;
	123	flagword flags; /* Or together of all input sections */
	124	enum section_type sectype;
	125	struct memory_region_struct *region;
562d3460	126	struct memory_region_struct *lma_region;
252b5132 RH	127	size_t block_value;
	128	fill_type fill;
	129
89cdebba KH	130	int subsection_alignment; /* alignment of components */
89cdebba KH	131	int section_alignment; /* alignment of start of section */
252b5132 RH	132
	133	union etree_union *load_base;
	134
	135	struct lang_output_section_phdr_list *phdrs;
	136	} lang_output_section_statement_type;
	137
89cdebba	138	typedef struct {
252b5132 RH	139	lang_statement_header_type header;
	140	} lang_common_statement_type;
	141
89cdebba	142	typedef struct {
252b5132 RH	143	lang_statement_header_type header;
	144	} lang_object_symbols_statement_type;
	145
89cdebba	146	typedef struct {
252b5132 RH	147	lang_statement_header_type header;
	148	fill_type fill;
	149	int size;
	150	asection *output_section;
	151	} lang_fill_statement_type;
	152
89cdebba	153	typedef struct {
252b5132 RH	154	lang_statement_header_type header;
252b5132 RH	155	unsigned int type;
89cdebba	156	union etree_union *exp;
252b5132 RH	157	bfd_vma value;
	158	asection *output_section;
	159	bfd_vma output_vma;
	160	} lang_data_statement_type;
	161
	162	/* Generate a reloc in the output file. */
	163
89cdebba	164	typedef struct {
252b5132 RH	165	lang_statement_header_type header;
	166
	167	/* Reloc to generate. */
	168	bfd_reloc_code_real_type reloc;
	169
	170	/* Reloc howto structure. */
	171	reloc_howto_type *howto;
	172
	173	/* Section to generate reloc against. Exactly one of section and
	174	name must be NULL. */
	175	asection *section;
	176
	177	/* Name of symbol to generate reloc against. Exactly one of section
	178	and name must be NULL. */
	179	const char *name;
	180
	181	/* Expression for addend. */
	182	union etree_union *addend_exp;
	183
	184	/* Resolved addend. */
	185	bfd_vma addend_value;
	186
	187	/* Output section where reloc should be performed. */
	188	asection *output_section;
	189
	190	/* VMA within output section. */
	191	bfd_vma output_vma;
	192	} lang_reloc_statement_type;
	193
89cdebba	194	typedef struct lang_input_statement_struct {
252b5132 RH	195	lang_statement_header_type header;
	196	/* Name of this file. */
	197	const char *filename;
	198	/* Name to use for the symbol giving address of text start */
	199	/* Usually the same as filename, but for a file spec'd with -l
	200	this is the -l switch itself rather than the filename. */
	201	const char *local_sym_name;
5cc18311	202
252b5132	203	bfd *the_bfd;
5cc18311	204
252b5132 RH	205	boolean closed;
252b5132 RH	206	file_ptr passive_position;
5cc18311	207
252b5132 RH	208	/* Symbol table of the file. */
	209	asymbol **asymbols;
	210	unsigned int symbol_count;
5cc18311	211
252b5132 RH	212	/* Point to the next file - whatever it is, wanders up and down
252b5132 RH	213	archives */
5cc18311	214
89cdebba	215	union lang_statement_union *next;
252b5132	216	/* Point to the next file, but skips archive contents */
89cdebba	217	union lang_statement_union *next_real_file;
5cc18311	218
252b5132	219	boolean is_archive;
5cc18311	220
252b5132 RH	221	/* 1 means search a set of directories for this file. */
252b5132 RH	222	boolean search_dirs_flag;
5cc18311	223
252b5132 RH	224	/* 1 means this is base file of incremental load.
252b5132 RH	225	Do not load this file's text or data.
5cc18311 KH	226	Also default text_start to after this file's bss. */
5cc18311 KH	227
252b5132 RH	228	boolean just_syms_flag;
	229
	230	/* Whether to search for this entry as a dynamic archive. */
	231	boolean dynamic;
	232
	233	/* Whether to include the entire contents of an archive. */
	234	boolean whole_archive;
	235
	236	boolean loaded;
5cc18311	237
89cdebba KH	238	#if 0
	239	unsigned int globals_in_this_file;
	240	#endif
252b5132 RH	241	const char *target;
	242	boolean real;
	243	} lang_input_statement_type;
	244
89cdebba	245	typedef struct {
252b5132 RH	246	lang_statement_header_type header;
	247	asection *section;
	248	lang_input_statement_type *ifile;
252b5132	249
5cc18311	250	} lang_input_section_type;
252b5132	251
89cdebba	252	typedef struct {
252b5132 RH	253	lang_statement_header_type header;
	254	asection *section;
	255	union lang_statement_union *file;
	256	} lang_afile_asection_pair_statement_type;
	257
89cdebba	258	typedef struct lang_wild_statement_struct {
252b5132	259	lang_statement_header_type header;
252b5132 RH	260	const char *filename;
252b5132 RH	261	boolean filenames_sorted;
b6bf44ba	262	struct wildcard_list *section_list;
252b5132	263	boolean keep_sections;
252b5132 RH	264	lang_statement_list_type children;
	265	} lang_wild_statement_type;
	266
89cdebba	267	typedef struct lang_address_statement_struct {
252b5132	268	lang_statement_header_type header;
89cdebba KH	269	const char *section_name;
89cdebba KH	270	union etree_union *address;
252b5132 RH	271	} lang_address_statement_type;
252b5132 RH	272
89cdebba	273	typedef struct {
252b5132 RH	274	lang_statement_header_type header;
	275	bfd_vma output_offset;
	276	size_t size;
	277	asection *output_section;
	278	fill_type fill;
	279	} lang_padding_statement_type;
	280
	281	/* A group statement collects a set of libraries together. The
	282	libraries are searched multiple times, until no new undefined
	283	symbols are found. The effect is to search a group of libraries as
	284	though they were a single library. */
	285
89cdebba	286	typedef struct {
252b5132 RH	287	lang_statement_header_type header;
	288	lang_statement_list_type children;
	289	} lang_group_statement_type;
	290
89cdebba	291	typedef union lang_statement_union {
252b5132	292	lang_statement_header_type header;
252b5132 RH	293	lang_wild_statement_type wild_statement;
	294	lang_data_statement_type data_statement;
	295	lang_reloc_statement_type reloc_statement;
	296	lang_address_statement_type address_statement;
	297	lang_output_section_statement_type output_section_statement;
	298	lang_afile_asection_pair_statement_type afile_asection_pair_statement;
	299	lang_assignment_statement_type assignment_statement;
	300	lang_input_statement_type input_statement;
	301	lang_target_statement_type target_statement;
	302	lang_output_statement_type output_statement;
	303	lang_input_section_type input_section;
	304	lang_common_statement_type common_statement;
	305	lang_object_symbols_statement_type object_symbols_statement;
	306	lang_fill_statement_type fill_statement;
	307	lang_padding_statement_type padding_statement;
	308	lang_group_statement_type group_statement;
	309	} lang_statement_union_type;
	310
	311	/* This structure holds information about a program header, from the
	312	PHDRS command in the linker script. */
	313
89cdebba	314	struct lang_phdr {
252b5132 RH	315	struct lang_phdr *next;
	316	const char *name;
	317	unsigned long type;
	318	boolean filehdr;
	319	boolean phdrs;
	320	etree_type *at;
	321	etree_type *flags;
	322	};
	323
	324	/* This structure is used to hold a list of sections which may not
	325	cross reference each other. */
	326
89cdebba	327	struct lang_nocrossref {
252b5132 RH	328	struct lang_nocrossref *next;
	329	const char *name;
	330	};
	331
	332	/* The list of nocrossref lists. */
	333
89cdebba	334	struct lang_nocrossrefs {
252b5132 RH	335	struct lang_nocrossrefs *next;
	336	struct lang_nocrossref *list;
	337	};
	338
	339	extern struct lang_nocrossrefs *nocrossref_list;
	340
577a0623 AM	341	/* This structure is used to hold a list of input section names which
	342	will not match an output section in the linker script. */
	343
	344	struct unique_sections {
	345	struct unique_sections *next;
	346	const char *name;
	347	};
	348
	349	extern struct unique_sections *unique_section_list;
	350
252b5132	351	extern lang_output_section_statement_type *abs_output_section;
aea4bd9d	352	extern lang_statement_list_type lang_output_section_statement;
252b5132 RH	353	extern boolean lang_has_input_file;
	354	extern etree_type *base;
	355	extern lang_statement_list_type *stat_ptr;
	356	extern boolean delete_output_file_on_failure;
	357
	358	extern const char *entry_symbol;
	359	extern boolean entry_from_cmdline;
b71e2778	360	extern lang_statement_list_type file_chain;
252b5132 RH	361
	362	extern void lang_init PARAMS ((void));
	363	extern struct memory_region_struct *lang_memory_region_lookup
	364	PARAMS ((const char *const));
	365	extern struct memory_region_struct *lang_memory_region_default
	366	PARAMS ((asection *));
	367	extern void lang_map PARAMS ((void));
aa8804e4 ILT	368	extern void lang_set_flags PARAMS ((lang_memory_region_type , const char ,
aa8804e4 ILT	369	int));
252b5132	370	extern void lang_add_output PARAMS ((const char *, int from_script));
aea4bd9d	371	extern lang_output_section_statement_type *lang_enter_output_section_statement
252b5132 RH	372	PARAMS ((const char *output_section_statement_name,
	373	etree_type * address_exp,
	374	enum section_type sectype,
	375	bfd_vma block_value,
	376	etree_type *align,
	377	etree_type *subalign,
	378	etree_type *));
	379	extern void lang_final PARAMS ((void));
	380	extern void lang_process PARAMS ((void));
	381	extern void lang_section_start PARAMS ((const char , union etree_union ));
	382	extern void lang_add_entry PARAMS ((const char *, boolean));
	383	extern void lang_add_target PARAMS ((const char *));
	384	extern void lang_add_wild
b6bf44ba	385	PARAMS ((struct wildcard_spec , struct wildcard_list , boolean));
252b5132 RH	386	extern void lang_add_map PARAMS ((const char *));
	387	extern void lang_add_fill PARAMS ((int));
	388	extern lang_assignment_statement_type * lang_add_assignment PARAMS ((union etree_union *));
	389	extern void lang_add_attribute PARAMS ((enum statement_enum));
	390	extern void lang_startup PARAMS ((const char *));
	391	extern void lang_float PARAMS ((enum bfd_boolean));
	392	extern void lang_leave_output_section_statement
562d3460 TW	393	PARAMS ((bfd_vma, const char , struct lang_output_section_phdr_list ,
562d3460 TW	394	const char *));
252b5132 RH	395	extern void lang_abs_symbol_at_end_of PARAMS ((const char , const char ));
	396	extern void lang_abs_symbol_at_beginning_of PARAMS ((const char *,
	397	const char *));
	398	extern void lang_statement_append PARAMS ((struct statement_list *,
	399	union lang_statement_union *,
	400	union lang_statement_union **));
	401	extern void lang_for_each_input_file
	402	PARAMS ((void (dothis) (lang_input_statement_type )));
	403	extern void lang_for_each_file
	404	PARAMS ((void (dothis) (lang_input_statement_type )));
e3dc8847	405	extern void lang_reset_memory_regions PARAMS ((void));
252b5132 RH	406	extern bfd_vma lang_do_assignments
	407	PARAMS ((lang_statement_union_type * s,
	408	lang_output_section_statement_type *output_section_statement,
	409	fill_type fill,
	410	bfd_vma dot));
	411
	412	#define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
252b5132 RH	413	lang_input_statement_type *statement; \
	414	for (statement = (lang_input_statement_type *)file_chain.head;\
	415	statement != (lang_input_statement_type *)NULL; \
	416	statement = (lang_input_statement_type *)statement->next)\
5cc18311	417
252b5132 RH	418	extern void lang_process PARAMS ((void));
	419	extern void ldlang_add_file PARAMS ((lang_input_statement_type *));
	420	extern lang_output_section_statement_type *lang_output_section_find
	421	PARAMS ((const char * const));
	422	extern lang_input_statement_type *lang_add_input_file
	423	PARAMS ((const char *name, lang_input_file_enum_type file_type,
	424	const char *target));
	425	extern void lang_add_keepsyms_file PARAMS ((const char *filename));
	426	extern lang_output_section_statement_type *
	427	lang_output_section_statement_lookup PARAMS ((const char * const name));
	428	extern void ldlang_add_undef PARAMS ((const char *const name));
	429	extern void lang_add_output_format PARAMS ((const char , const char ,
	430	const char *, int from_script));
	431	extern void lang_list_init PARAMS ((lang_statement_list_type*));
	432	extern void lang_add_data PARAMS ((int type, union etree_union *));
	433	extern void lang_add_reloc
	434	PARAMS ((bfd_reloc_code_real_type reloc, reloc_howto_type *howto,
	435	asection section, const char name, union etree_union *addend));
	436	extern void lang_for_each_statement
	437	PARAMS ((void (func) (lang_statement_union_type )));
	438	extern PTR stat_alloc PARAMS ((size_t size));
	439	extern void dprint_statement PARAMS ((lang_statement_union_type *, int));
	440	extern bfd_vma lang_size_sections
	441	PARAMS ((lang_statement_union_type *s,
	442	lang_output_section_statement_type *output_section_statement,
	443	lang_statement_union_type **prev, fill_type fill,
b3327aad	444	bfd_vma dot, boolean *relax));
252b5132 RH	445	extern void lang_enter_group PARAMS ((void));
252b5132 RH	446	extern void lang_leave_group PARAMS ((void));
39dcfe18	447	extern void lang_add_section
252b5132 RH	448	PARAMS ((lang_statement_list_type ptr, asection section,
	449	lang_output_section_statement_type *output,
	450	lang_input_statement_type *file));
	451	extern void lang_new_phdr
	452	PARAMS ((const char , etree_type , boolean, boolean, etree_type *,
	453	etree_type *));
	454	extern void lang_add_nocrossref PARAMS ((struct lang_nocrossref *));
	455	extern void lang_enter_overlay PARAMS ((etree_type , etree_type , int));
	456	extern void lang_enter_overlay_section PARAMS ((const char *));
	457	extern void lang_leave_overlay_section
	458	PARAMS ((bfd_vma, struct lang_output_section_phdr_list *));
	459	extern void lang_leave_overlay
562d3460 TW	460	PARAMS ((bfd_vma, const char , struct lang_output_section_phdr_list ,
562d3460 TW	461	const char *));
252b5132 RH	462
	463	extern struct bfd_elf_version_tree *lang_elf_version_info;
	464
	465	extern struct bfd_elf_version_expr *lang_new_vers_regex
	466	PARAMS ((struct bfd_elf_version_expr , const char , const char *));
	467	extern struct bfd_elf_version_tree *lang_new_vers_node
	468	PARAMS ((struct bfd_elf_version_expr , struct bfd_elf_version_expr ));
	469	extern struct bfd_elf_version_deps *lang_add_vers_depend
	470	PARAMS ((struct bfd_elf_version_deps , const char ));
	471	extern void lang_register_vers_node
	472	PARAMS ((const char , struct bfd_elf_version_tree ,
	473	struct bfd_elf_version_deps *));
577a0623 AM	474	boolean unique_section_p PARAMS ((const char *));
577a0623 AM	475	extern void lang_add_unique PARAMS ((const char *));
252b5132 RH	476
252b5132 RH	477	#endif