X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldlang.h;h=9d02c8bb41e2f981e15869a2a35477ed6c81bd4f;hb=cd714b7904c1d0be81ad1d6f7ac410913f70c78b;hp=5e050170627e833360b024fac862e3916f58d6b9;hpb=943fbd5bd520934ca3a26abb2d5cfbdd2a7659ec;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldlang.h b/ld/ldlang.h index 5e05017062..9d02c8bb41 100644 --- a/ld/ldlang.h +++ b/ld/ldlang.h @@ -1,25 +1,30 @@ /* ldlang.h - linker command language support - Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. - - This file is part of GLD, the Gnu Linker. - - GLD is free software; you can redistribute it and/or modify + Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003, 2004, 2005, 2006, 2007 + 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 1, or (at your option) - any later version. - - GLD is distributed in the hope that it will be useful, + 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 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 { lang_input_file_is_l_enum, @@ -30,14 +35,18 @@ typedef enum lang_input_file_is_file_enum } lang_input_file_enum_type; -typedef unsigned int fill_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_struct { char *name; @@ -45,83 +54,112 @@ typedef struct memory_region_struct bfd_vma origin; bfd_size_type length; bfd_vma current; - bfd_size_type old_length; - int flags; - boolean had_full_message; -} lang_memory_region_type ; + 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; + 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_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 +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_statement_struct +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; - 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; - - boolean processed; - asection *bfd_section; - int flags; /* Or together of all input sections */ - int loadable; /* set from NOLOAD flag in script */ - struct memory_region_struct *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; + 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 there is a symbol relative to this section. */ + unsigned int section_relative_symbol : 1; } lang_output_section_statement_type; - typedef struct { lang_statement_header_type header; @@ -135,7 +173,7 @@ typedef struct typedef struct { lang_statement_header_type header; - fill_type fill; + fill_type *fill; int size; asection *output_section; } lang_fill_statement_type; @@ -144,10 +182,10 @@ 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; + bfd_vma output_offset; } lang_data_statement_type; /* Generate a reloc in the output file. */ @@ -162,12 +200,12 @@ typedef struct /* 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. */ @@ -179,8 +217,8 @@ typedef struct /* 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 @@ -188,58 +226,70 @@ 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; - - 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; - + union lang_statement_union *next; + + /* Point to the next file, but skips archive contents. */ + union lang_statement_union *next_real_file; + + const char *target; + + unsigned int closed : 1; + unsigned int is_archive : 1; + /* 1 means search a set of directories for this file. */ - 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. */ + 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. */ - - boolean just_syms_flag; - - boolean loaded; - - - /* unsigned int globals_in_this_file;*/ - const char *target; - boolean real; - asection *common_section; - asection *common_output_section; - boolean complained; + Also default text_start to after this file's bss. */ + unsigned int just_syms_flag : 1; + + /* Whether to search for this entry as a dynamic archive. */ + 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. */ + unsigned int whole_archive : 1; + + unsigned int loaded : 1; + + unsigned int real : 1; } 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; @@ -247,19 +297,48 @@ typedef struct union lang_statement_union *file; } lang_afile_asection_pair_statement_type; -typedef struct lang_wild_statement_struct +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; + 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 *section_name; 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; + + 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 char *section_name; + union etree_union *address; + const segment_type *segment; } lang_address_statement_type; typedef struct @@ -268,7 +347,7 @@ typedef struct bfd_vma output_offset; size_t size; asection *output_section; - fill_type fill; + fill_type *fill; } lang_padding_statement_type; /* A group statement collects a set of libraries together. The @@ -282,10 +361,9 @@ typedef struct lang_statement_list_type children; } lang_group_statement_type; -typedef union lang_statement_union +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_reloc_statement_type reloc_statement; @@ -304,94 +382,251 @@ typedef union lang_statement_union 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; + bfd_boolean filehdr; + bfd_boolean phdrs; + etree_type *at; + 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. */ + +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; +}; + +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; +}; + +/* 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; + int iteration; +}; + +/* 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 boolean lang_has_input_file; +extern lang_statement_list_type lang_output_section_statement; +extern bfd_boolean lang_has_input_file; extern etree_type *base; extern lang_statement_list_type *stat_ptr; -extern boolean delete_output_file_on_failure; - -extern void lang_init PARAMS ((void)); -extern struct memory_region_struct *lang_memory_region_lookup - PARAMS ((const char *const)); -extern void lang_map PARAMS ((void)); -extern void lang_set_flags PARAMS ((int *, const char *)); -extern void lang_add_output PARAMS ((const char *, int from_script)); -extern void lang_enter_output_section_statement - PARAMS ((const char *output_section_statement_name, - etree_type * address_exp, - int flags, - 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 *, int)); -extern void lang_add_target PARAMS ((const char *)); -extern void lang_add_wild PARAMS ((const char *const , const char *const)); -extern void lang_add_map PARAMS ((const char *)); -extern void lang_add_fill PARAMS ((int)); -extern void 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 *)); -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 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 void lang_init + (void); +extern void lang_finish + (void); +extern lang_memory_region_type *lang_memory_region_lookup + (const char *const, bfd_boolean); +extern lang_memory_region_type *lang_memory_region_default + (asection *); +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 *output_section_statement_name, + etree_type *address_exp, + enum section_type sectype, + etree_type *align, + etree_type *subalign, + etree_type *, int); +extern void lang_final + (void); +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_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 + (lang_statement_list_type *, lang_statement_union_type *, + lang_statement_union_type **); extern void lang_for_each_input_file - PARAMS ((void (*dothis) (lang_input_statement_type *))); + (void (*dothis) (lang_input_statement_type *)); extern void lang_for_each_file - PARAMS ((void (*dothis) (lang_input_statement_type *))); -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) \ - 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)\ - -extern void lang_process PARAMS ((void)); -extern void ldlang_add_file PARAMS ((lang_input_statement_type *)); + (void (*dothis) (lang_input_statement_type *)); +extern void lang_reset_memory_regions + (void); +extern void lang_do_assignments + (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) \ + +extern void lang_process + (void); +extern void ldlang_add_file + (lang_input_statement_type *); extern lang_output_section_statement_type *lang_output_section_find - PARAMS ((const char * const)); + (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 *, lang_output_section_statement_type *, + struct orphan_save *, etree_type *, lang_statement_list_type *); 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)); + (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 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 *)); + lang_output_section_statement_lookup + (const char *const); +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 lang_add_data + (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)); + (bfd_reloc_code_real_type, reloc_howto_type *, asection *, const char *, + union etree_union *); extern void lang_for_each_statement - PARAMS ((void (*func) (lang_statement_union_type *))); -extern PTR stat_alloc PARAMS ((size_t size)); -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 wild_doit - PARAMS ((lang_statement_list_type *ptr, asection *section, - lang_output_section_statement_type *output, - lang_input_statement_type *file)); + (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 void lang_size_sections + (bfd_boolean *, bfd_boolean); +extern void one_lang_size_sections_pass + (bfd_boolean *, bfd_boolean); +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 *); +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_tree *lang_elf_version_info; + +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); +bfd_boolean unique_section_p + (const asection *); +extern void lang_add_unique + (const char *); +extern const char *lang_get_output_target + (void); +extern void lang_track_definedness (const char *); +extern int lang_symbol_definition_iteration (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); #endif