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/* ldlang.h - linker command language support
Copyright 1991, 1992, 1993 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. */
#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;
int 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_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;
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;
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_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. */
const 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;
/* For library members only */
/* For a library, points to chain of entries for the library members. */
struct lang_input_statement_struct *subfiles;
/* Size of contents of this file, if library member. */
bfd_size_type total_size;
/* For library member, points to the library's own entry. */
struct lang_input_statement_struct *superfile;
/* For library member, points to next entry for next member. */
struct lang_input_statement_struct *chain;
/* Point to the next file - whatever it is, wanders up and down
archives */
union lang_statement_union *next;
/* Point to the next file, but skips archive contents */
union lang_statement_union *next_real_file;
boolean is_archive;
/* 1 means search a set of directories for this file. */
boolean search_dirs_flag;
/* 1 means this is base file of incremental load.
Do not load this file's text or data.
Also default text_start to after this file's bss. */
boolean just_syms_flag;
boolean loaded;
/* unsigned int globals_in_this_file;*/
const char *target;
boolean real;
asection *common_section;
asection *common_output_section;
boolean complained;
} 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 *section_name;
const char *filename;
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;
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;
lang_assignment_statement_type assignment_statement;
lang_input_statement_type input_statement;
lang_target_statement_type target_statement;
lang_output_statement_type output_statement;
lang_input_section_type input_section;
lang_common_statement_type common_statement;
lang_object_symbols_statement_type object_symbols_statement;
lang_fill_statement_type fill_statement;
lang_padding_statement_type padding_statement;
} lang_statement_union_type;
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 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 *));
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 void lang_for_each_file
PARAMS ((void (*dothis) (lang_input_statement_type *)));
#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 *));
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 *, 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, const 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 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));
#endif
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