mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
243 lines
8.2 KiB
C
243 lines
8.2 KiB
C
/* ld-emul.h - Linker emulation header file
|
|
Copyright (C) 1991-2020 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 LDEMUL_H
|
|
#define LDEMUL_H
|
|
|
|
/* Forward declaration for ldemul_add_options() and others. */
|
|
struct option;
|
|
|
|
extern void ldemul_hll
|
|
(char *);
|
|
extern void ldemul_syslib
|
|
(char *);
|
|
extern void ldemul_after_parse
|
|
(void);
|
|
extern void ldemul_before_parse
|
|
(void);
|
|
extern void ldemul_after_open
|
|
(void);
|
|
extern void ldemul_after_check_relocs
|
|
(void);
|
|
extern void ldemul_after_allocation
|
|
(void);
|
|
extern void ldemul_before_allocation
|
|
(void);
|
|
extern void ldemul_set_output_arch
|
|
(void);
|
|
extern char *ldemul_choose_target
|
|
(int, char**);
|
|
extern void ldemul_choose_mode
|
|
(char *);
|
|
extern void ldemul_list_emulations
|
|
(FILE *);
|
|
extern void ldemul_list_emulation_options
|
|
(FILE *);
|
|
extern char *ldemul_get_script
|
|
(int *isfile);
|
|
extern void ldemul_finish
|
|
(void);
|
|
extern void ldemul_set_symbols
|
|
(void);
|
|
extern void ldemul_create_output_section_statements
|
|
(void);
|
|
extern lang_output_section_statement_type *ldemul_place_orphan
|
|
(asection *, const char *, int);
|
|
extern bfd_boolean ldemul_parse_args
|
|
(int, char **);
|
|
extern void ldemul_add_options
|
|
(int, char **, int, struct option **, int, struct option **);
|
|
extern bfd_boolean ldemul_handle_option
|
|
(int);
|
|
extern bfd_boolean ldemul_unrecognized_file
|
|
(struct lang_input_statement_struct *);
|
|
extern bfd_boolean ldemul_recognized_file
|
|
(struct lang_input_statement_struct *);
|
|
extern bfd_boolean ldemul_open_dynamic_archive
|
|
(const char *, struct search_dirs *, struct lang_input_statement_struct *);
|
|
extern char *ldemul_default_target
|
|
(int, char**);
|
|
extern void after_parse_default
|
|
(void);
|
|
extern void after_open_default
|
|
(void);
|
|
extern void after_check_relocs_default
|
|
(void);
|
|
extern void after_allocation_default
|
|
(void);
|
|
extern void before_allocation_default
|
|
(void);
|
|
extern void finish_default
|
|
(void);
|
|
extern void finish_default
|
|
(void);
|
|
extern void set_output_arch_default
|
|
(void);
|
|
extern void syslib_default
|
|
(char*);
|
|
extern void hll_default
|
|
(char*);
|
|
extern int ldemul_find_potential_libraries
|
|
(char *, struct lang_input_statement_struct *);
|
|
extern struct bfd_elf_version_expr *ldemul_new_vers_pattern
|
|
(struct bfd_elf_version_expr *);
|
|
extern void ldemul_extra_map_file_text
|
|
(bfd *, struct bfd_link_info *, FILE *);
|
|
/* Return 1 if we are emitting CTF early, and 0 if ldemul_examine_strtab_for_ctf
|
|
will be called by the target. */
|
|
extern int ldemul_emit_ctf_early
|
|
(void);
|
|
/* Called from per-target code to examine the strtab and symtab. */
|
|
extern void ldemul_examine_strtab_for_ctf
|
|
(struct ctf_file *, struct elf_sym_strtab *, bfd_size_type,
|
|
struct elf_strtab_hash *);
|
|
|
|
typedef struct ld_emulation_xfer_struct {
|
|
/* Run before parsing the command line and script file.
|
|
Set the architecture, maybe other things. */
|
|
void (*before_parse) (void);
|
|
|
|
/* Handle the SYSLIB (low level library) script command. */
|
|
void (*syslib) (char *);
|
|
|
|
/* Handle the HLL (high level library) script command. */
|
|
void (*hll) (char *);
|
|
|
|
/* Run after parsing the command line and script file. */
|
|
void (*after_parse) (void);
|
|
|
|
/* Run after opening all input files, and loading the symbols. */
|
|
void (*after_open) (void);
|
|
|
|
/* Run after checking relocations. */
|
|
void (*after_check_relocs) (void);
|
|
|
|
/* Run after allocating output sections. */
|
|
void (*after_allocation) (void);
|
|
|
|
/* Set the output architecture and machine if possible. */
|
|
void (*set_output_arch) (void);
|
|
|
|
/* Decide which target name to use. */
|
|
char * (*choose_target) (int, char**);
|
|
|
|
/* Run before allocating output sections. */
|
|
void (*before_allocation) (void);
|
|
|
|
/* Return the appropriate linker script. */
|
|
char * (*get_script) (int *isfile);
|
|
|
|
/* The name of this emulation. */
|
|
char *emulation_name;
|
|
|
|
/* The output format. */
|
|
char *target_name;
|
|
|
|
/* Run after assigning values from the script. */
|
|
void (*finish) (void);
|
|
|
|
/* Create any output sections needed by the target. */
|
|
void (*create_output_section_statements) (void);
|
|
|
|
/* Try to open a dynamic library. ARCH is an architecture name, and
|
|
is normally the empty string. ENTRY is the lang_input_statement
|
|
that should be opened. */
|
|
bfd_boolean (*open_dynamic_archive)
|
|
(const char *arch, struct search_dirs *,
|
|
struct lang_input_statement_struct *entry);
|
|
|
|
/* Place an orphan section. Return TRUE if it was placed, FALSE if
|
|
the default action should be taken. This field may be NULL, in
|
|
which case the default action will always be taken. */
|
|
lang_output_section_statement_type *(*place_orphan)
|
|
(asection *, const char *, int);
|
|
|
|
/* Run after assigning parsing with the args, but before
|
|
reading the script. Used to initialize symbols used in the script. */
|
|
void (*set_symbols) (void);
|
|
|
|
/* Parse args which the base linker doesn't understand.
|
|
Return TRUE if the arg needs no further processing. */
|
|
bfd_boolean (*parse_args) (int, char **);
|
|
|
|
/* Hook to add options to parameters passed by the base linker to
|
|
getopt_long and getopt_long_only calls. */
|
|
void (*add_options)
|
|
(int, char **, int, struct option **, int, struct option **);
|
|
|
|
/* Companion to the above to handle an option. Returns TRUE if it is
|
|
one of our options. */
|
|
bfd_boolean (*handle_option) (int);
|
|
|
|
/* Run to handle files which are not recognized as object files or
|
|
archives. Return TRUE if the file was handled. */
|
|
bfd_boolean (*unrecognized_file)
|
|
(struct lang_input_statement_struct *);
|
|
|
|
/* Run to list the command line options which parse_args handles. */
|
|
void (* list_options) (FILE *);
|
|
|
|
/* Run to specially handle files which *are* recognized as object
|
|
files or archives. Return TRUE if the file was handled. */
|
|
bfd_boolean (*recognized_file)
|
|
(struct lang_input_statement_struct *);
|
|
|
|
/* Called when looking for libraries in a directory specified
|
|
via a linker command line option or linker script option.
|
|
Files that match the pattern "lib*.a" have already been scanned.
|
|
(For VMS files matching ":lib*.a" have also been scanned). */
|
|
int (* find_potential_libraries)
|
|
(char *, struct lang_input_statement_struct *);
|
|
|
|
/* Called when adding a new version pattern. PowerPC64-ELF uses
|
|
this hook to add a pattern matching ".foo" for every "foo". */
|
|
struct bfd_elf_version_expr * (*new_vers_pattern)
|
|
(struct bfd_elf_version_expr *);
|
|
|
|
/* Called when printing the map file, in case there are
|
|
emulation-specific sections for it. */
|
|
void (*extra_map_file_text)
|
|
(bfd *, struct bfd_link_info *, FILE *);
|
|
|
|
/* If this returns true, we emit CTF as early as possible: if false, we emit
|
|
CTF once the strtab and symtab are laid out. */
|
|
int (*emit_ctf_early)
|
|
(void);
|
|
|
|
/* Called to examine the string and symbol table late enough in linking that
|
|
they are finally laid out. If emit_ctf_early returns true, this is not
|
|
called and ldemul_maybe_emit_ctf() emits CTF in 'early' mode: otherwise, it
|
|
waits until 'late'. (Late mode needs explicit support at per-target link
|
|
time to get called at all). If set, called by ld when the examine_strtab
|
|
bfd_link_callback is invoked by per-target code. */
|
|
void (*examine_strtab_for_ctf) (struct ctf_file *, struct elf_sym_strtab *,
|
|
bfd_size_type, struct elf_strtab_hash *);
|
|
} ld_emulation_xfer_type;
|
|
|
|
typedef enum {
|
|
intel_ic960_ld_mode_enum,
|
|
default_mode_enum,
|
|
intel_gld960_ld_mode_enum
|
|
} lang_emulation_mode_enum_type;
|
|
|
|
extern ld_emulation_xfer_type *ld_emulations[];
|
|
|
|
#endif
|