/* ELF object file format.
- Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 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 1, or (at your option)
+ 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,
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
+ 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. */
#define OBJ_ELF 1
-#include <bfd.h>
+/* Note that all macros in this file should be wrapped in #ifndef, for
+ sake of obj-multi.h which includes this file. */
-#define BYTES_IN_WORD 4 /* for now */
-#include "../bfd/libelf.h"
+#ifndef OUTPUT_FLAVOR
+#define OUTPUT_FLAVOR bfd_target_elf_flavour
+#endif
-#define TARGET_SYMBOL_FIELDS int local:1; unsigned long sy_name_offset;
+#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 FALSE
#define FALSE 0
#define TRUE !FALSE
#endif
-/* should be conditional on address size! */
-#define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
+#ifndef obj_begin
+#define obj_begin() elf_begin ()
+#endif
+extern void elf_begin (void);
-#define S_SET_OTHER(S,V) (elf_symbol((S)->bsym)->other = (V))
-#define S_SET_TYPE(S,T) (elf_symbol((S)->bsym)->type = (T))
-#define S_SET_DESC(S,D) (elf_symbol((S)->bsym)->desc = (D))
-#define S_GET_OTHER(S) (elf_symbol((S)->bsym)->other)
-#define S_GET_TYPE(S) (elf_symbol((S)->bsym)->type)
-#define S_GET_DESC(S) (elf_symbol((S)->bsym)->desc)
+#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((S)->bsym)->internal_elf_sym.st_size = (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;
-#if 0 /* This should not reference i!!
- If it's really needed, fix it, and the call site if necessary. */
-#define obj_frob_symbol(S,PUNT) if ( obj_elf_frob_symbol (S, &PUNT) ) { i++; continue; }
+#ifndef obj_frob_file
+#define obj_frob_file elf_frob_file
#endif
+extern void elf_frob_file (void);
-#define obj_write_symbol(S) obj_elf_write_symbol (S)
+#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);
-#define obj_frob_file() elf_frob_file()
+#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);
-extern int obj_elf_frob_symbol PARAMS ((struct symbol *, int *));
-extern void elf_frob_file PARAMS ((void));
-extern void elf_file_symbol PARAMS ((char *));
+/* 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
-extern void obj_elf_section PARAMS ((int));
-extern void obj_elf_previous PARAMS ((void));
+#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_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 bfd_boolean 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_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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