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- /* ELF object file format.
- Copyright (C) 1992-2022 Free Software Foundation, Inc.
- This file is part of GAS, the GNU Assembler.
- GAS 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, or (at your option)
- any later version.
- GAS 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 GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
- /* HP PA-RISC support was contributed by the Center for Software Science
- at the University of Utah. */
- #ifndef _OBJ_ELF_H
- #define _OBJ_ELF_H
- #define OBJ_ELF 1
- /* Note that all macros in this file should be wrapped in #ifndef, for
- sake of obj-multi.h which includes this file. */
- #ifndef OUTPUT_FLAVOR
- #define OUTPUT_FLAVOR bfd_target_elf_flavour
- #endif
- #define BYTES_IN_WORD 4 /* for now */
- #include "bfd/elf-bfd.h"
- #include "targ-cpu.h"
- #ifdef TC_ALPHA
- #define ECOFF_DEBUGGING (alpha_flag_mdebug > 0)
- extern int alpha_flag_mdebug;
- #endif
- /* For now, always set ECOFF_DEBUGGING for a MIPS target. */
- #ifdef TC_MIPS
- #define ECOFF_DEBUGGING mips_flag_mdebug
- extern int mips_flag_mdebug;
- #endif /* TC_MIPS */
- #ifdef OBJ_MAYBE_ECOFF
- #ifndef ECOFF_DEBUGGING
- #define ECOFF_DEBUGGING 1
- #endif
- #endif
- enum elf_visibility
- {
- visibility_unchanged = 0,
- visibility_local,
- visibility_hidden,
- visibility_remove
- };
- struct elf_versioned_name_list
- {
- char *name;
- struct elf_versioned_name_list *next;
- };
- /* Additional information we keep for each symbol. */
- struct elf_obj_sy
- {
- /* Whether the symbol has been marked as local. */
- unsigned int local : 1;
- /* Whether the symbol has been marked for rename with @@@. */
- unsigned int rename : 1;
- /* Whether the symbol has a bad version name. */
- unsigned int bad_version : 1;
- /* Whether visibility of the symbol should be changed. */
- ENUM_BITFIELD (elf_visibility) visibility : 2;
- /* Use this to keep track of .size expressions that involve
- differences that we can't compute yet. */
- expressionS *size;
- /* The list of names specified by the .symver directive. */
- struct elf_versioned_name_list *versioned_name;
- #ifdef ECOFF_DEBUGGING
- /* If we are generating ECOFF debugging information, we need some
- additional fields for each symbol. */
- struct efdr *ecoff_file;
- struct localsym *ecoff_symbol;
- valueT ecoff_extern_size;
- #endif
- };
- /* Match section group name, the sh_info field and the section_id
- field. */
- struct elf_section_match
- {
- const char * group_name;
- const char * linked_to_symbol_name;
- unsigned int section_id;
- unsigned int sh_info; /* ELF section information. */
- bfd_vma sh_flags; /* ELF section flags. */
- flagword flags;
- };
- #define OBJ_SYMFIELD_TYPE struct elf_obj_sy
- #ifndef obj_begin
- #define obj_begin() elf_begin ()
- #endif
- extern void elf_begin (void);
- #ifndef LOCAL_LABEL_PREFIX
- #define LOCAL_LABEL_PREFIX '.'
- #endif
- /* should be conditional on address size! */
- #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd))
- #ifndef S_GET_SIZE
- #define S_GET_SIZE(S) \
- (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
- #endif
- #ifndef S_SET_SIZE
- #define S_SET_SIZE(S,V) \
- (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
- #endif
- #ifndef S_GET_ALIGN
- #define S_GET_ALIGN(S) \
- (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
- #endif
- #ifndef S_SET_ALIGN
- #define S_SET_ALIGN(S,V) \
- (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
- #endif
- int elf_s_get_other (symbolS *);
- #ifndef S_GET_OTHER
- #define S_GET_OTHER(S) (elf_s_get_other (S))
- #endif
- #ifndef S_SET_OTHER
- #define S_SET_OTHER(S,V) \
- (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
- #endif
- extern asection *gdb_section;
- #ifndef obj_frob_file
- #define obj_frob_file elf_frob_file
- #endif
- extern void elf_frob_file (void);
- #ifndef obj_frob_file_before_adjust
- #define obj_frob_file_before_adjust elf_frob_file_before_adjust
- #endif
- extern void elf_frob_file_before_adjust (void);
- #ifndef obj_frob_file_after_relocs
- #define obj_frob_file_after_relocs elf_frob_file_after_relocs
- #endif
- extern void elf_frob_file_after_relocs (void);
- /* If the target doesn't have special processing for labels, take care of
- dwarf2 output at the object file level. */
- #ifndef tc_frob_label
- #include "dwarf2dbg.h"
- #define obj_frob_label dwarf2_emit_label
- #endif
- #ifndef obj_app_file
- #define obj_app_file elf_file_symbol
- #endif
- extern void elf_file_symbol (const char *, int);
- extern void obj_elf_section_change_hook (void);
- extern void obj_elf_section (int);
- extern const char * obj_elf_section_name (void);
- extern void obj_elf_previous (int);
- extern void obj_elf_version (int);
- extern void obj_elf_common (int);
- extern void obj_elf_bss (int);
- extern void obj_elf_data (int);
- extern void obj_elf_text (int);
- extern void obj_elf_change_section
- (const char *, unsigned int, bfd_vma, int, struct elf_section_match *,
- int, int);
- extern void obj_elf_vtable_inherit (int);
- extern void obj_elf_vtable_entry (int);
- extern struct fix * obj_elf_get_vtable_inherit (void);
- extern struct fix * obj_elf_get_vtable_entry (void);
- extern bool obj_elf_seen_attribute
- (int, unsigned int);
- extern int obj_elf_vendor_attribute (int);
- /* BFD wants to write the udata field, which is a no-no for the
- predefined section symbols in bfd/section.c. They are read-only. */
- #ifndef obj_sec_sym_ok_for_reloc
- #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
- #endif
- void elf_obj_read_begin_hook (void);
- #ifndef obj_read_begin_hook
- #define obj_read_begin_hook elf_obj_read_begin_hook
- #endif
- void elf_obj_symbol_new_hook (symbolS *);
- #ifndef obj_symbol_new_hook
- #define obj_symbol_new_hook elf_obj_symbol_new_hook
- #endif
- void elf_obj_symbol_clone_hook (symbolS *, symbolS *);
- #ifndef obj_symbol_clone_hook
- #define obj_symbol_clone_hook elf_obj_symbol_clone_hook
- #endif
- void elf_copy_symbol_attributes (symbolS *, symbolS *);
- #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
- #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
- (elf_copy_symbol_attributes (DEST, SRC))
- #endif
- void elf_adjust_symtab (void);
- #ifndef obj_adjust_symtab
- #define obj_adjust_symtab elf_adjust_symtab
- #endif
- #ifndef SEPARATE_STAB_SECTIONS
- /* Avoid ifndef each separate macro setting by wrapping the whole of the
- stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
- caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
- and OBJ_PROCESS_STAB too, without needing the tweaks below. */
- /* Stabs go in a separate section. */
- #define SEPARATE_STAB_SECTIONS 1
- /* We need 12 bytes at the start of the section to hold some initial
- information. */
- extern void obj_elf_init_stab_section (segT);
- #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
- #ifdef ECOFF_DEBUGGING
- /* We smuggle stabs in ECOFF rather than using a separate section.
- The Irix linker can not handle a separate stabs section. */
- #undef SEPARATE_STAB_SECTIONS
- #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
- #undef INIT_STAB_SECTION
- #define INIT_STAB_SECTION(seg) \
- ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
- #undef OBJ_PROCESS_STAB
- #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
- if (ECOFF_DEBUGGING) \
- ecoff_stab ((seg), (what), (string), (type), (other), (desc))
- #endif /* ECOFF_DEBUGGING */
- #endif /* SEPARATE_STAB_SECTIONS not defined. */
- extern void elf_frob_symbol (symbolS *, int *);
- #ifndef obj_frob_symbol
- #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
- #endif
- extern void elf_fixup_removed_symbol (symbolS **);
- #ifndef obj_fixup_removed_symbol
- #define obj_fixup_removed_symbol(sympp) elf_fixup_removed_symbol (sympp)
- #endif
- extern void elf_pop_insert (void);
- #ifndef obj_pop_insert
- #define obj_pop_insert() elf_pop_insert()
- #endif
- #ifndef OBJ_MAYBE_ELF
- /* If OBJ_MAYBE_ELF then obj-multi.h will define obj_ecoff_set_ext. */
- #define obj_ecoff_set_ext elf_ecoff_set_ext
- struct ecoff_extr;
- extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *);
- #endif
- extern asection *elf_com_section_ptr;
- extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP,
- addressT size);
- #endif /* _OBJ_ELF_H */
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