X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldlang.h;h=41ef5bac01c7c10a3661dcb828ea9fed88e973c3;hb=18625d5459c50dcdd0e9dc5338f272dcaa00d5d9;hp=ab102a50df6d11bfcb3a1edae5fa06c788b2bcec;hpb=2fa0b342a5cd580781d2b9348a87f33a92d363fa;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldlang.h b/ld/ldlang.h index ab102a50df..41ef5bac01 100644 --- a/ld/ldlang.h +++ b/ld/ldlang.h @@ -1,76 +1,81 @@ -/* ldlang.h - - - Copyright (C) 1991 Free Software Foundation, Inc. - +/* ldlang.h - linker command language support + Copyright 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000 + 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) 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 { +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; + lang_input_file_is_search_file_enum, + lang_input_file_is_file_enum +} lang_input_file_enum_type; -typedef unsigned short fill_type; -typedef struct statement_list { +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 { - boolean flag_read; - boolean flag_write; - boolean flag_executable; - boolean flag_loadable; -} lang_section_flags_type; - -typedef struct memory_region_struct { +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; - lang_section_flags_type 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_common_statement_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 - } type; - + 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; @@ -78,54 +83,91 @@ typedef struct { lang_statement_header_type header; union etree_union *exp; -} lang_assignment_statement_type; +} lang_assignment_statement_type; -typedef struct lang_target_statement_struct { +typedef struct lang_target_statement_struct +{ lang_statement_header_type header; - char *target; + const char *target; } lang_target_statement_type; -typedef struct lang_output_statement_struct { +typedef struct lang_output_statement_struct +{ lang_statement_header_type header; - 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 +}; + +/* 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; - char *memspec; + const char *memspec; union lang_statement_union *next; - char *name; - unsigned long subsection_alignment; - boolean processed; + const char *name; + boolean processed; + asection *bfd_section; - lang_section_flags_type flags; + flagword flags; /* Or together of all input sections */ + enum section_type sectype; 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; + + struct lang_output_section_phdr_list *phdrs; } lang_output_section_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; } lang_common_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; } lang_object_symbols_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; -fill_type fill; + fill_type fill; + int size; + asection *output_section; } lang_fill_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; unsigned int type; union etree_union *exp; @@ -134,115 +176,126 @@ typedef struct { 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; -typedef struct lang_input_statement_struct - { - lang_statement_header_type header; - /* Name of this file. */ - 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. */ - char *local_sym_name; - - /* Describe the layout of the contents of the file */ - - /* The file's a.out header. */ - /* struct exec header;*/ - /* Offset in file of GDB symbol segment, or 0 if there is none. */ - int symseg_offset; - - /* Describe data from the file loaded into core */ - - bfd *the_bfd; - - boolean closed; - file_ptr passive_position; - - /* Symbol table of the file. */ - asymbol **asymbols; - unsigned int symbol_count; - - /* Next two used only if `relocatable_output' or if needed for */ - /* output of undefined reference line numbers. */ - /* Text reloc info saved by `write_text' for `coptxtrel'. */ - - - /* Offset in bytes in the output file symbol table - of the first local symbol for this file. Set by `write_file_symbols'. */ - int local_syms_offset; - - /* 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. */ - int 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 if file's header has been read into this structure. */ - boolean header_read_flag; + /* Reloc howto structure. */ + reloc_howto_type *howto; - /* 1 means search a set of directories for this file. */ - boolean search_dirs_flag; + /* Section to generate reloc against. Exactly one of section and + name must be NULL. */ + asection *section; - /* 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; + /* Name of symbol to generate reloc against. Exactly one of section + and name must be NULL. */ + const char *name; - boolean loaded; + /* Expression for addend. */ + union etree_union *addend_exp; + /* Resolved addend. */ + bfd_vma addend_value; - /* unsigned int globals_in_this_file;*/ - char *target; - boolean real; + /* Output section where reloc should be performed. */ + asection *output_section; - asection *common_section; - asection *common_output_section; - } lang_input_statement_type; + /* VMA within output section. */ + bfd_vma output_vma; +} lang_reloc_statement_type; -typedef struct { +typedef struct lang_input_statement_struct +{ + lang_statement_header_type header; + /* Name of this file. */ + const char *filename; + /* Name to use for the symbol giving address of text start */ + /* Usually the same as filename, but for a file spec'd with -l + this is the -l switch itself rather than the filename. */ + 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; + + /* unsigned int globals_in_this_file;*/ + 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 { +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 { +typedef struct lang_wild_statement_struct +{ lang_statement_header_type header; - char *section_name; - char *filename; + const char *section_name; + boolean sections_sorted; + const char *filename; + boolean filenames_sorted; + boolean keep_sections; + struct name_list *exclude_filename_list; lang_statement_list_type children; } lang_wild_statement_type; -typedef struct lang_address_statement_struct { +typedef struct lang_address_statement_struct +{ lang_statement_header_type header; - char *section_name; + const char *section_name; union etree_union *address; } lang_address_statement_type; -typedef struct { +typedef struct +{ lang_statement_header_type header; bfd_vma output_offset; size_t size; @@ -250,12 +303,24 @@ typedef struct { 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; union lang_statement_union *next; 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; @@ -268,80 +333,160 @@ typedef union lang_statement_union 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; +}; -PROTO(void,lang_init,(void)); -PROTO(struct memory_region_struct ,*lang_memory_region_lookup,(char *)); -PROTO(struct lang_output_section_statement_struct *,lang_output_section_find,(char *)); - -PROTO(void ,lang_map,(struct _iobuf *)); -PROTO(void,lang_set_flags,(lang_section_flags_type *, char *)); -PROTO(void,lang_add_output,(char *)); - -PROTO(void,lang_final,(void)); -PROTO(struct symbol_cache_entry *,create_symbol,(char *, unsigned int, struct sec_struct *)); -PROTO(void ,lang_process,(void)); -PROTO(void ,lang_section_start,(char *, union etree_union *)); -PROTO(void,lang_add_entry,(char *)); -PROTO(void,lang_add_target,(char *)); -PROTO(void,lang_add_wild,(char *, char *)); -PROTO(void,lang_add_map,(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,(char *)); -PROTO(void,lang_float,(enum boolean)); -PROTO(void,lang_leave_output_section_statement,(bfd_vma, char *)); -PROTO(void,lang_abs_symbol_at_end_of,(char *, 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_ASYMBOL(asymbol) \ - -#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)\ +/* The list of nocrossref lists. */ -#define LANG_FOR_EACH_INPUT_SECTION(statement, abfd, section, x) \ -{ extern lang_statement_list_type file_chain; \ +struct lang_nocrossrefs +{ + struct lang_nocrossrefs *next; + struct lang_nocrossref *list; +}; + +extern struct lang_nocrossrefs *nocrossref_list; + +extern lang_output_section_statement_type *abs_output_section; +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 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 void 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 ((const char *, boolean, const char *, boolean, boolean, name_list *)); +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 *)); +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 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)\ - { \ - 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,()); - -PROTO(lang_input_statement_type *, - lang_add_input_file,(char *name, - lang_input_file_enum_type file_type, - char *target)); -PROTO(lang_output_section_statement_type *, -lang_output_section_statement_lookup,(char *name)); + +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 wild_doit + 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 *)); + +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 *)); + +#endif