[deliverable/binutils-gdb.git] / gas / config / obj-elf.h

/* ELF object file format.
   Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 99, 2000
   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 2, 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, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, 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

#include "bfd.h"

#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
extern int alpha_flag_mdebug;
#endif

/* For now, always set ECOFF_DEBUGGING for a MIPS target.  */
#ifdef TC_MIPS
#ifdef MIPS_STABS_ELF
#define ECOFF_DEBUGGING 0
#else
#define ECOFF_DEBUGGING 1
#endif /* MIPS_STABS_ELF */
#endif /* TC_MIPS */

#ifdef OBJ_MAYBE_ECOFF
#ifndef ECOFF_DEBUGGING
#define ECOFF_DEBUGGING 1
#endif
#endif

/* Additional information we keep for each symbol.  */
struct elf_obj_sy
{
  /* Whether the symbol has been marked as local.  */
  int local;

  /* Use this to keep track of .size expressions that involve
     differences that we can't compute yet.  */
  expressionS *size;

  /* The name specified by the .symver directive.  */
  char *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
};

#define OBJ_SYMFIELD_TYPE struct elf_obj_sy

#ifndef FALSE
#define FALSE 0
#define TRUE  !FALSE
#endif

#ifndef obj_begin
#define obj_begin() elf_begin ()
#endif
extern void elf_begin PARAMS ((void));

/* 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 PARAMS ((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 PARAMS ((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 PARAMS ((void));

#ifndef obj_app_file
#define obj_app_file elf_file_symbol
#endif
extern void elf_file_symbol PARAMS ((const char *));

extern void obj_elf_section_change_hook PARAMS ((void));

extern void obj_elf_section PARAMS ((int));
extern void obj_elf_previous PARAMS ((int));
extern void obj_elf_version PARAMS ((int));
extern void obj_elf_common PARAMS ((int));
extern void obj_elf_data PARAMS ((int));
extern void obj_elf_text PARAMS ((int));
extern struct fix *obj_elf_vtable_inherit PARAMS ((int));
extern struct fix *obj_elf_vtable_entry PARAMS ((int));

/* BFD wants to write the udata field, which is a no-no for the
   globally defined sections.  */
#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 PARAMS ((void));
#ifndef obj_read_begin_hook
#define obj_read_begin_hook	elf_obj_read_begin_hook
#endif

void elf_obj_symbol_new_hook PARAMS ((symbolS *));
#ifndef obj_symbol_new_hook
#define obj_symbol_new_hook	elf_obj_symbol_new_hook
#endif

/* When setting one symbol equal to another, by default we probably
   want them to have the same "size", whatever it means in the current
   context.  */
#ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
#define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC)			\
do								\
  {								\
    struct elf_obj_sy *srcelf = symbol_get_obj (SRC);		\
    struct elf_obj_sy *destelf = symbol_get_obj (DEST);		\
    if (srcelf->size)						\
      {								\
	if (destelf->size == NULL)				\
	  destelf->size =					\
	    (expressionS *) xmalloc (sizeof (expressionS));	\
	*destelf->size = *srcelf->size;				\
      }								\
    else							\
      {								\
	if (destelf->size != NULL)				\
	  free (destelf->size);					\
	destelf->size = NULL;					\
      }								\
    S_SET_SIZE ((DEST), S_GET_SIZE (SRC));			\
    S_SET_OTHER ((DEST), S_GET_OTHER (SRC));			\
  }								\
while (0)
#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 PARAMS ((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 PARAMS ((symbolS *, int *));
#ifndef obj_frob_symbol
#define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
#endif

extern void elf_pop_insert PARAMS ((void));
#ifndef obj_pop_insert
#define obj_pop_insert()	elf_pop_insert()
#endif

#ifndef OBJ_MAYBE_ELF
#define obj_ecoff_set_ext elf_ecoff_set_ext
#ifdef ANSI_PROTOTYPES
struct ecoff_extr;
#endif
extern void elf_ecoff_set_ext PARAMS ((symbolS *, struct ecoff_extr *));
#endif

#endif /* _OBJ_ELF_H */
Commit	Line	Data
	1	/* ELF object file format.
	2	Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 99, 2000
	3	Free Software Foundation, Inc.
	4
	5	This file is part of GAS, the GNU Assembler.
	6
	7	GAS is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2, or (at your option)
	10	any later version.
	11
	12	GAS is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GAS; see the file COPYING. If not, write to the Free
	19	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
	20	02111-1307, USA. */
	21
	22	/* HP PA-RISC support was contributed by the Center for Software Science
	23	at the University of Utah. */
	24
	25	#ifndef _OBJ_ELF_H
	26	#define _OBJ_ELF_H
	27
	28	#define OBJ_ELF 1
	29
	30	/* Note that all macros in this file should be wrapped in #ifndef, for
	31	sake of obj-multi.h which includes this file. */
	32
	33	#ifndef OUTPUT_FLAVOR
	34	#define OUTPUT_FLAVOR bfd_target_elf_flavour
	35	#endif
	36
	37	#include "bfd.h"
	38
	39	#define BYTES_IN_WORD 4 /* for now */
	40	#include "bfd/elf-bfd.h"
	41
	42	#include "targ-cpu.h"
	43
	44	#ifdef TC_ALPHA
	45	#define ECOFF_DEBUGGING alpha_flag_mdebug
	46	extern int alpha_flag_mdebug;
	47	#endif
	48
	49	/* For now, always set ECOFF_DEBUGGING for a MIPS target. */
	50	#ifdef TC_MIPS
	51	#ifdef MIPS_STABS_ELF
	52	#define ECOFF_DEBUGGING 0
	53	#else
	54	#define ECOFF_DEBUGGING 1
	55	#endif /* MIPS_STABS_ELF */
	56	#endif /* TC_MIPS */
	57
	58	#ifdef OBJ_MAYBE_ECOFF
	59	#ifndef ECOFF_DEBUGGING
	60	#define ECOFF_DEBUGGING 1
	61	#endif
	62	#endif
	63
	64	/* Additional information we keep for each symbol. */
	65	struct elf_obj_sy
	66	{
	67	/* Whether the symbol has been marked as local. */
	68	int local;
	69
	70	/* Use this to keep track of .size expressions that involve
	71	differences that we can't compute yet. */
	72	expressionS *size;
	73
	74	/* The name specified by the .symver directive. */
	75	char *versioned_name;
	76
	77	#ifdef ECOFF_DEBUGGING
	78	/* If we are generating ECOFF debugging information, we need some
	79	additional fields for each symbol. */
	80	struct efdr *ecoff_file;
	81	struct localsym *ecoff_symbol;
	82	valueT ecoff_extern_size;
	83	#endif
	84	};
	85
	86	#define OBJ_SYMFIELD_TYPE struct elf_obj_sy
	87
	88	#ifndef FALSE
	89	#define FALSE 0
	90	#define TRUE !FALSE
	91	#endif
	92
	93	#ifndef obj_begin
	94	#define obj_begin() elf_begin ()
	95	#endif
	96	extern void elf_begin PARAMS ((void));
	97
	98	/* should be conditional on address size! */
	99	#define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
	100
	101	#ifndef S_GET_SIZE
	102	#define S_GET_SIZE(S) \
	103	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
	104	#endif
	105	#ifndef S_SET_SIZE
	106	#define S_SET_SIZE(S,V) \
	107	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
	108	#endif
	109
	110	#ifndef S_GET_ALIGN
	111	#define S_GET_ALIGN(S) \
	112	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
	113	#endif
	114	#ifndef S_SET_ALIGN
	115	#define S_SET_ALIGN(S,V) \
	116	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
	117	#endif
	118
	119	int elf_s_get_other PARAMS ((symbolS *));
	120	#ifndef S_GET_OTHER
	121	#define S_GET_OTHER(S) (elf_s_get_other (S))
	122	#endif
	123	#ifndef S_SET_OTHER
	124	#define S_SET_OTHER(S,V) \
	125	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
	126	#endif
	127
	128	extern asection *gdb_section;
	129
	130	#ifndef obj_frob_file
	131	#define obj_frob_file elf_frob_file
	132	#endif
	133	extern void elf_frob_file PARAMS ((void));
	134
	135	#ifndef obj_frob_file_after_relocs
	136	#define obj_frob_file_after_relocs elf_frob_file_after_relocs
	137	#endif
	138	extern void elf_frob_file_after_relocs PARAMS ((void));
	139
	140	#ifndef obj_app_file
	141	#define obj_app_file elf_file_symbol
	142	#endif
	143	extern void elf_file_symbol PARAMS ((const char *));
	144
	145	extern void obj_elf_section_change_hook PARAMS ((void));
	146
	147	extern void obj_elf_section PARAMS ((int));
	148	extern void obj_elf_previous PARAMS ((int));
	149	extern void obj_elf_version PARAMS ((int));
	150	extern void obj_elf_common PARAMS ((int));
	151	extern void obj_elf_data PARAMS ((int));
	152	extern void obj_elf_text PARAMS ((int));
	153	extern struct fix *obj_elf_vtable_inherit PARAMS ((int));
	154	extern struct fix *obj_elf_vtable_entry PARAMS ((int));
	155
	156	/* BFD wants to write the udata field, which is a no-no for the
	157	globally defined sections. */
	158	#ifndef obj_sec_sym_ok_for_reloc
	159	#define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
	160	#endif
	161
	162	void elf_obj_read_begin_hook PARAMS ((void));
	163	#ifndef obj_read_begin_hook
	164	#define obj_read_begin_hook elf_obj_read_begin_hook
	165	#endif
	166
	167	void elf_obj_symbol_new_hook PARAMS ((symbolS *));
	168	#ifndef obj_symbol_new_hook
	169	#define obj_symbol_new_hook elf_obj_symbol_new_hook
	170	#endif
	171
	172	/* When setting one symbol equal to another, by default we probably
	173	want them to have the same "size", whatever it means in the current
	174	context. */
	175	#ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
	176	#define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
	177	do \
	178	{ \
	179	struct elf_obj_sy *srcelf = symbol_get_obj (SRC); \
	180	struct elf_obj_sy *destelf = symbol_get_obj (DEST); \
	181	if (srcelf->size) \
	182	{ \
	183	if (destelf->size == NULL) \
	184	destelf->size = \
	185	(expressionS *) xmalloc (sizeof (expressionS)); \
	186	destelf->size = srcelf->size; \
	187	} \
	188	else \
	189	{ \
	190	if (destelf->size != NULL) \
	191	free (destelf->size); \
	192	destelf->size = NULL; \
	193	} \
	194	S_SET_SIZE ((DEST), S_GET_SIZE (SRC)); \
	195	S_SET_OTHER ((DEST), S_GET_OTHER (SRC)); \
	196	} \
	197	while (0)
	198	#endif
	199
	200	#ifndef SEPARATE_STAB_SECTIONS
	201	/* Avoid ifndef each separate macro setting by wrapping the whole of the
	202	stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
	203	caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
	204	and OBJ_PROCESS_STAB too, without needing the tweaks below. */
	205
	206	/* Stabs go in a separate section. */
	207	#define SEPARATE_STAB_SECTIONS 1
	208
	209	/* We need 12 bytes at the start of the section to hold some initial
	210	information. */
	211	extern void obj_elf_init_stab_section PARAMS ((segT));
	212	#define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
	213
	214	#ifdef ECOFF_DEBUGGING
	215	/* We smuggle stabs in ECOFF rather than using a separate section.
	216	The Irix linker can not handle a separate stabs section. */
	217
	218	#undef SEPARATE_STAB_SECTIONS
	219	#define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
	220
	221	#undef INIT_STAB_SECTION
	222	#define INIT_STAB_SECTION(seg) \
	223	((void)(ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
	224
	225	#undef OBJ_PROCESS_STAB
	226	#define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
	227	if (ECOFF_DEBUGGING) \
	228	ecoff_stab ((seg), (what), (string), (type), (other), (desc))
	229	#endif /* ECOFF_DEBUGGING */
	230
	231	#endif /* SEPARATE_STAB_SECTIONS not defined. */
	232
	233	extern void elf_frob_symbol PARAMS ((symbolS , int ));
	234	#ifndef obj_frob_symbol
	235	#define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
	236	#endif
	237
	238	extern void elf_pop_insert PARAMS ((void));
	239	#ifndef obj_pop_insert
	240	#define obj_pop_insert() elf_pop_insert()
	241	#endif
	242
	243	#ifndef OBJ_MAYBE_ELF
	244	#define obj_ecoff_set_ext elf_ecoff_set_ext
	245	#ifdef ANSI_PROTOTYPES
	246	struct ecoff_extr;
	247	#endif
	248	extern void elf_ecoff_set_ext PARAMS ((symbolS , struct ecoff_extr ));
	249	#endif
	250
	251	#endif /* _OBJ_ELF_H */