[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 1, 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

#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

#define obj_begin() elf_begin ()
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));

#define obj_app_file elf_file_symbol
extern void elf_file_symbol PARAMS ((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));

/* 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

/* 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 */

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
252b5132	1	/* ELF object file format.
4c63da97	2	Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 99, 2000
49309057	3	Free Software Foundation, Inc.
252b5132 RH	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 1, 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
	23	/* HP PA-RISC support was contributed by the Center for Software Science
	24	at the University of Utah. */
	25
	26	#ifndef _OBJ_ELF_H
	27	#define _OBJ_ELF_H
	28
	29	#define OBJ_ELF 1
	30
4ca72d38	31	#ifndef OUTPUT_FLAVOR
252b5132	32	#define OUTPUT_FLAVOR bfd_target_elf_flavour
4ca72d38	33	#endif
252b5132	34
3f9b03b5	35	#include "bfd.h"
252b5132 RH	36
	37	#define BYTES_IN_WORD 4 /* for now */
	38	#include "bfd/elf-bfd.h"
	39
49309057 ILT	40	#include "targ-cpu.h"
	41
	42	#ifdef TC_ALPHA
	43	#define ECOFF_DEBUGGING alpha_flag_mdebug
	44	extern int alpha_flag_mdebug;
	45	#endif
	46
	47	/* For now, always set ECOFF_DEBUGGING for a MIPS target. */
	48	#ifdef TC_MIPS
	49	#ifdef MIPS_STABS_ELF
	50	#define ECOFF_DEBUGGING 0
	51	#else
	52	#define ECOFF_DEBUGGING 1
	53	#endif /* MIPS_STABS_ELF */
	54	#endif /* TC_MIPS */
	55
4c63da97 AM	56	#ifdef OBJ_MAYBE_ECOFF
	57	#ifndef ECOFF_DEBUGGING
	58	#define ECOFF_DEBUGGING 1
	59	#endif
	60	#endif
	61
252b5132	62	/* Additional information we keep for each symbol. */
252b5132 RH	63	struct elf_obj_sy
252b5132 RH	64	{
49309057 ILT	65	/* Whether the symbol has been marked as local. */
	66	int local;
	67
252b5132 RH	68	/* Use this to keep track of .size expressions that involve
	69	differences that we can't compute yet. */
	70	expressionS *size;
	71
	72	/* The name specified by the .symver directive. */
	73	char *versioned_name;
49309057 ILT	74
	75	#ifdef ECOFF_DEBUGGING
	76	/* If we are generating ECOFF debugging information, we need some
	77	additional fields for each symbol. */
	78	struct efdr *ecoff_file;
	79	struct localsym *ecoff_symbol;
	80	valueT ecoff_extern_size;
	81	#endif
252b5132	82	};
252b5132 RH	83
	84	#define OBJ_SYMFIELD_TYPE struct elf_obj_sy
	85
252b5132 RH	86	#ifndef FALSE
	87	#define FALSE 0
	88	#define TRUE !FALSE
	89	#endif
	90
	91	#define obj_begin() elf_begin ()
	92	extern void elf_begin PARAMS ((void));
	93
	94	/* should be conditional on address size! */
	95	#define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
	96
4ca72d38	97	#ifndef S_GET_SIZE
49309057 ILT	98	#define S_GET_SIZE(S) \
49309057 ILT	99	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
4ca72d38 AM	100	#endif
4ca72d38 AM	101	#ifndef S_SET_SIZE
252b5132	102	#define S_SET_SIZE(S,V) \
49309057	103	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
4ca72d38	104	#endif
252b5132	105
4ca72d38	106	#ifndef S_GET_ALIGN
49309057 ILT	107	#define S_GET_ALIGN(S) \
49309057 ILT	108	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
4ca72d38 AM	109	#endif
4ca72d38 AM	110	#ifndef S_SET_ALIGN
252b5132	111	#define S_SET_ALIGN(S,V) \
49309057	112	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
4ca72d38	113	#endif
252b5132	114
4c63da97 AM	115	int elf_s_get_other PARAMS ((symbolS *));
	116	#ifndef S_GET_OTHER
	117	#define S_GET_OTHER(S) (elf_s_get_other (S))
	118	#endif
	119	#ifndef S_SET_OTHER
252b5132	120	#define S_SET_OTHER(S,V) \
49309057	121	(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
4c63da97	122	#endif
252b5132 RH	123
	124	extern asection *gdb_section;
	125
4ca72d38	126	#ifndef obj_frob_file
252b5132	127	#define obj_frob_file elf_frob_file
4ca72d38	128	#endif
252b5132 RH	129	extern void elf_frob_file PARAMS ((void));
252b5132 RH	130
4ca72d38	131	#ifndef obj_frob_file_after_relocs
252b5132	132	#define obj_frob_file_after_relocs elf_frob_file_after_relocs
4ca72d38	133	#endif
252b5132 RH	134	extern void elf_frob_file_after_relocs PARAMS ((void));
	135
	136	#define obj_app_file elf_file_symbol
	137	extern void elf_file_symbol PARAMS ((char *));
	138
	139	extern void obj_elf_section_change_hook PARAMS ((void));
	140
	141	extern void obj_elf_section PARAMS ((int));
	142	extern void obj_elf_previous PARAMS ((int));
	143	extern void obj_elf_version PARAMS ((int));
40b10cc7 NC	144	extern void obj_elf_common PARAMS ((int));
	145	extern void obj_elf_data PARAMS ((int));
	146	extern void obj_elf_text PARAMS ((int));
252b5132 RH	147
	148	/* BFD wants to write the udata field, which is a no-no for the
	149	globally defined sections. */
4ca72d38	150	#ifndef obj_sec_sym_ok_for_reloc
252b5132	151	#define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
4ca72d38	152	#endif
252b5132	153
4c63da97 AM	154	void elf_obj_read_begin_hook PARAMS ((void));
	155	#ifndef obj_read_begin_hook
	156	#define obj_read_begin_hook elf_obj_read_begin_hook
	157	#endif
	158
	159	void elf_obj_symbol_new_hook PARAMS ((symbolS *));
	160	#ifndef obj_symbol_new_hook
	161	#define obj_symbol_new_hook elf_obj_symbol_new_hook
	162	#endif
	163
252b5132 RH	164	/* When setting one symbol equal to another, by default we probably
	165	want them to have the same "size", whatever it means in the current
	166	context. */
4ca72d38	167	#ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
252b5132 RH	168	#define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
	169	do \
	170	{ \
49309057 ILT	171	struct elf_obj_sy *srcelf = symbol_get_obj (SRC); \
	172	struct elf_obj_sy *destelf = symbol_get_obj (DEST); \
	173	if (srcelf->size) \
252b5132	174	{ \
49309057 ILT	175	if (destelf->size == NULL) \
49309057 ILT	176	destelf->size = \
252b5132	177	(expressionS *) xmalloc (sizeof (expressionS)); \
49309057	178	destelf->size = srcelf->size; \
252b5132 RH	179	} \
	180	else \
	181	{ \
49309057 ILT	182	if (destelf->size != NULL) \
	183	free (destelf->size); \
	184	destelf->size = NULL; \
252b5132 RH	185	} \
	186	S_SET_SIZE ((DEST), S_GET_SIZE (SRC)); \
	187	S_SET_OTHER ((DEST), S_GET_OTHER (SRC)); \
	188	} \
	189	while (0)
4ca72d38	190	#endif
252b5132 RH	191
	192	/* Stabs go in a separate section. */
	193	#define SEPARATE_STAB_SECTIONS 1
	194
	195	/* We need 12 bytes at the start of the section to hold some initial
	196	information. */
	197	extern void obj_elf_init_stab_section PARAMS ((segT));
	198	#define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
	199
252b5132	200	#ifdef ECOFF_DEBUGGING
252b5132 RH	201	/* We smuggle stabs in ECOFF rather than using a separate section.
	202	The Irix linker can not handle a separate stabs section. */
	203
	204	#undef SEPARATE_STAB_SECTIONS
	205	#define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
	206
	207	#undef INIT_STAB_SECTION
	208	#define INIT_STAB_SECTION(seg) \
	209	((void)(ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
	210
4ca72d38	211	#undef OBJ_PROCESS_STAB
252b5132 RH	212	#define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
	213	if (ECOFF_DEBUGGING) \
	214	ecoff_stab ((seg), (what), (string), (type), (other), (desc))
	215	#endif /* ECOFF_DEBUGGING */
	216
49309057	217	extern void elf_frob_symbol PARAMS ((symbolS , int ));
252b5132 RH	218	#ifndef obj_frob_symbol
	219	#define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
	220	#endif
	221
	222	extern void elf_pop_insert PARAMS ((void));
4ca72d38	223	#ifndef obj_pop_insert
252b5132	224	#define obj_pop_insert() elf_pop_insert()
4ca72d38	225	#endif
252b5132 RH	226
	227	#ifndef OBJ_MAYBE_ELF
	228	#define obj_ecoff_set_ext elf_ecoff_set_ext
	229	#ifdef ANSI_PROTOTYPES
	230	struct ecoff_extr;
	231	#endif
49309057	232	extern void elf_ecoff_set_ext PARAMS ((symbolS , struct ecoff_extr ));
252b5132 RH	233	#endif
	234
	235	#endif /* _OBJ_ELF_H */