Imported from /home/lorry/working-area/delta_binutils-tarball/binutils-2.25.tar.bz2.HEADbinutils-2.25master

1 files changed, 701 insertions, 0 deletions

diff --git a/ld/ldlang.h b/ld/ldlang.h
new file mode 100644
index 0000000..5f6faae
--- /dev/null
+++ b/ld/ldlang.h
@@ -0,0 +1,701 @@
+/* ldlang.h - linker command language support
+   Copyright (C) 1991-2014 Free Software Foundation, Inc.
+
+   This file is part of the GNU Binutils.
+
+   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 3 of the License, or
+   (at your option) any later version.
+
+   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 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
+{
+  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;
+
+struct _fill_type
+{
+  size_t size;
+  unsigned char data[1];
+};
+
+typedef struct statement_list
+{
+  union lang_statement_union *  head;
+  union lang_statement_union ** tail;
+} lang_statement_list_type;
+
+typedef struct memory_region_name_struct
+{
+  const char * name;
+  struct memory_region_name_struct * next;
+} lang_memory_region_name;
+
+typedef struct memory_region_struct
+{
+  lang_memory_region_name name_list;
+  struct memory_region_struct *next;
+  bfd_vma origin;
+  bfd_size_type length;
+  bfd_vma current;
+  union lang_statement_union *last_os;
+  flagword flags;
+  flagword not_flags;
+  bfd_boolean had_full_message;
+} lang_memory_region_type;
+
+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_insert_statement_enum,
+  lang_constructors_statement_enum
+};
+
+typedef struct lang_statement_header_struct
+{
+  union lang_statement_union *next;
+  enum 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,
+  overlay_section,
+  noload_section,
+  noalloc_section
+};
+
+/* This structure holds a list of program headers describing
+   segments in which this section should be placed.  */
+
+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
+{
+  lang_statement_header_type header;
+  lang_statement_list_type children;
+  struct lang_output_section_statement_struct *next;
+  struct lang_output_section_statement_struct *prev;
+  const char *name;
+  asection *bfd_section;
+  lang_memory_region_type *region;
+  lang_memory_region_type *lma_region;
+  fill_type *fill;
+  union etree_union *addr_tree;
+  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;
+
+  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 this section should update "dot".  Prevents section being ignored.  */
+  unsigned int update_dot : 1;
+  /* If this section is after assignment to _end.  */
+  unsigned int after_end : 1;
+  /* If this section uses the alignment of its input sections.  */
+  unsigned int align_lma_with_input : 1;
+} 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_offset;
+} 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;
+
+  /* Offset within output section.  */
+  bfd_vma output_offset;
+} lang_reloc_statement_type;
+
+struct lang_input_statement_flags
+{
+  /* 1 means this file was specified in a -l option.  */
+  unsigned int maybe_archive : 1;
+
+  /* 1 means this file was specified in a -l:namespec option.  */
+  unsigned int full_name_provided : 1;
+
+  /* 1 means search a set of directories for this file.  */
+  unsigned int search_dirs : 1;
+
+  /* 1 means this was found when processing a script in the sysroot.  */
+  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.  */
+  unsigned int just_syms : 1;
+
+  /* Whether to search for this entry as a dynamic archive.  */
+  unsigned int dynamic : 1;
+
+  /* Set if a DT_NEEDED tag should be added not just for the dynamic library
+     explicitly given by this entry but also for any dynamic libraries in
+     this entry's needed list.  */
+  unsigned int add_DT_NEEDED_for_dynamic : 1;
+
+  /* Set if this entry should cause a DT_NEEDED tag only when some
+     regular file references its symbols (ie. --as-needed is in effect).  */
+  unsigned int add_DT_NEEDED_for_regular : 1;
+
+  /* Whether to include the entire contents of an archive.  */
+  unsigned int whole_archive : 1;
+
+  /* Set when bfd opening is successful.  */
+  unsigned int loaded : 1;
+
+  unsigned int real : 1;
+
+  /* Set if the file does not exist.  */
+  unsigned int missing_file : 1;
+
+  /* Set if reloading an archive or --as-needed lib.  */
+  unsigned int reload : 1;
+
+#ifdef ENABLE_PLUGINS
+  /* Set if the file was claimed by a plugin.  */
+  unsigned int claimed : 1;
+
+  /* Set if the file was claimed from an archive.  */
+  unsigned int claim_archive : 1;
+#endif /* ENABLE_PLUGINS */
+
+  /* Head of list of pushed flags.  */
+  struct lang_input_statement_flags *pushed;
+};
+
+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;
+
+  struct flag_info *section_flag_list;
+
+  /* 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;
+
+  const char *target;
+
+  struct lang_input_statement_flags flags;
+} lang_input_statement_type;
+
+typedef struct
+{
+  lang_statement_header_type header;
+  asection *section;
+} lang_input_section_type;
+
+struct map_symbol_def {
+  struct bfd_link_hash_entry *entry;
+  struct map_symbol_def *next;
+};
+
+/* For input sections, when writing a map file: head / tail of a linked
+   list of hash table entries for symbols defined in this section.  */
+typedef struct input_section_userdata_struct
+{
+  struct map_symbol_def *map_symbol_def_head;
+  struct map_symbol_def **map_symbol_def_tail;
+  unsigned long map_symbol_def_count;
+} input_section_userdata_type;
+
+#define get_userdata(x) ((x)->userdata)
+
+
+typedef struct lang_wild_statement_struct lang_wild_statement_type;
+
+typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *,
+			    asection *, struct flag_info *,
+			    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;
+  struct lang_section_bst *left;
+  struct lang_section_bst *right;
+} lang_section_bst_type;
+
+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;
+
+  walk_wild_section_handler_t walk_wild_section_handler;
+  struct wildcard_list *handler_data[4];
+  lang_section_bst_type *tree;
+  struct flag_info *section_flag_list;
+};
+
+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
+{
+  lang_statement_header_type header;
+  bfd_vma output_offset;
+  bfd_size_type 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 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_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_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 *next;
+  const char *name;
+  unsigned long type;
+  bfd_boolean filehdr;
+  bfd_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.  */
+
+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 *next;
+  lang_nocrossref_type *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;
+};
+
+/* 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 bfd_hash_entry root;
+  unsigned int by_object : 1;
+  unsigned int by_script : 1;
+  unsigned int iteration : 1;
+};
+
+/* 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;
+};
+
+struct asneeded_minfo
+{
+  struct asneeded_minfo *next;
+  const char *soname;
+  bfd *ref;
+  const char *name;
+};
+
+extern struct lang_phdr *lang_phdr_list;
+extern struct lang_nocrossrefs *nocrossref_list;
+extern const char *output_target;
+extern lang_output_section_statement_type *abs_output_section;
+extern lang_statement_list_type lang_output_section_statement;
+extern struct lang_input_statement_flags input_flags;
+extern bfd_boolean lang_has_input_file;
+extern lang_statement_list_type *stat_ptr;
+extern bfd_boolean delete_output_file_on_failure;
+
+extern struct bfd_sym_chain entry_symbol;
+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 struct asneeded_minfo **asneeded_list_tail;
+
+extern void (*output_bfd_hash_table_free_fn) (struct bfd_link_hash_table *);
+
+extern void lang_init
+  (void);
+extern void lang_finish
+  (void);
+extern lang_memory_region_type * lang_memory_region_lookup
+  (const char * const, bfd_boolean);
+extern void lang_memory_region_alias
+  (const char *, const char *);
+extern void lang_map
+  (void);
+extern void lang_set_flags
+  (lang_memory_region_type *, const char *, int);
+extern void lang_add_output
+  (const char *, int from_script);
+extern lang_output_section_statement_type *lang_enter_output_section_statement
+  (const char *, etree_type *, enum section_type, etree_type *, etree_type *,
+   etree_type *, int, int);
+extern void lang_final
+  (void);
+extern void lang_relax_sections
+  (bfd_boolean);
+extern void lang_process
+  (void);
+extern void lang_section_start
+  (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
+  (struct wildcard_spec *, struct wildcard_list *, bfd_boolean);
+extern void lang_add_map
+  (const char *);
+extern void lang_add_fill
+  (fill_type *);
+extern lang_assignment_statement_type *lang_add_assignment
+  (union etree_union *);
+extern void lang_add_attribute
+  (enum statement_enum);
+extern void lang_startup
+  (const char *);
+extern void lang_float
+  (bfd_boolean);
+extern void lang_leave_output_section_statement
+  (fill_type *, const char *, lang_output_section_phdr_list *,
+   const char *);
+extern void lang_statement_append
+  (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
+  (void (*dothis) (lang_input_statement_type *));
+extern void lang_reset_memory_regions
+  (void);
+extern void lang_do_assignments
+  (lang_phase_type);
+extern asection *section_for_dot
+  (void);
+
+#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_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_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_get
+  (const asection *);
+extern lang_output_section_statement_type *lang_output_section_statement_lookup
+  (const char *, int, bfd_boolean);
+extern lang_output_section_statement_type *next_matching_output_section_statement
+  (lang_output_section_statement_type *, int);
+extern void ldlang_add_undef
+  (const char *const, bfd_boolean);
+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
+  (bfd_reloc_code_real_type, reloc_howto_type *, asection *, const char *,
+   union etree_union *);
+extern void lang_for_each_statement
+  (void (*) (lang_statement_union_type *));
+extern void lang_for_each_statement_worker
+  (void (*) (lang_statement_union_type *), lang_statement_union_type *);
+extern void *stat_alloc
+  (size_t);
+extern void strip_excluded_output_sections
+  (void);
+extern void lang_clear_os_map
+  (void);
+extern void dprint_statement
+  (lang_statement_union_type *, int);
+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 *,
+   struct flag_info *, 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
+  (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 *, lang_output_section_phdr_list *);
+extern void lang_leave_overlay
+  (etree_type *, int, fill_type *, const char *,
+   lang_output_section_phdr_list *, const char *);
+
+extern struct bfd_elf_version_expr *lang_new_vers_pattern
+  (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 *);
+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
+  (void);
+extern struct lang_definedness_hash_entry *lang_symbol_defined (const char *);
+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);
+
+extern void
+lang_ld_feature (char *);
+
+#endif