[thirdparty/binutils-gdb.git] / gdb / symfile.h

/* Definitions for reading symbol files into GDB.
   Copyright (C) 1990, 1991, 1992  Free Software Foundation, Inc.

This file is part of GDB.

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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#if !defined (SYMFILE_H)
#define SYMFILE_H

/* This file requires that you first include "bfd.h".  */

struct psymbol_allocation_list {
  struct partial_symbol *list;
  struct partial_symbol *next;
  int size;
};

/* Structure to keep track of symbol reading functions for various
   object file types.  */

struct sym_fns {

  /* is the name, or name prefix, of the BFD "target type" that this
     set of functions handles.  E.g. "a.out" or "sunOs" or "coff" or "elf".  */

  char *sym_name;

  /* counts how many bytes of sym_name should be checked against the
     BFD target type of the file being read.  If an exact match is
     desired, specify the number of characters in sym_name plus 1 for the
     NUL.  If a prefix match is desired, specify the number of characters in
     sym_name.  */

  int sym_namelen;

  /* Initializes anything that is global to the entire symbol table.  It is
     called during symbol_file_add, when we begin debugging an entirely new
     program. */

  void (*sym_new_init) PARAMS ((struct objfile *));

  /* Reads any initial information from a symbol file, and initializes the
     struct sym_fns SF in preparation for sym_read().  It is called every
     time we read a symbol file for any reason. */

  void (*sym_init) PARAMS ((struct objfile *));

  /* sym_read (objfile, addr, mainline)
     Reads a symbol file into a psymtab (or possibly a symtab).
     OBJFILE is the objfile struct for the file we are reading.
     SECTION_OFFSETS
     are the offset between the file's specified section addresses and
     their true addresses in memory.
     MAINLINE is 1 if this is the
     main symbol table being read, and 0 if a secondary
     symbol file (e.g. shared library or dynamically loaded file)
     is being read.  */

  void (*sym_read) PARAMS ((struct objfile *, struct section_offsets *, int));

  /* Called when we are finished with an objfile.  Should do all cleanup
     that is specific to the object file format for the particular objfile. */
 
  void (*sym_finish) PARAMS ((struct objfile *));

  /* This function produces a file-dependent section_offsets structure,
     allocated in the objfile's storage, and based on the parameter.
     The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
     with the higher levels of GDB.  It should probably be changed to
     a string, where NULL means the default, and others are parsed in a file
     dependent way.  The result of this function is handed in to sym_read.  */

  struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR));

  /* Finds the next struct sym_fns.  They are allocated and initialized
     in whatever module implements the functions pointed to; an 
     initializer calls add_symtab_fns to add them to the global chain.  */

  struct sym_fns *next;

};

extern void
extend_psymbol_list PARAMS ((struct psymbol_allocation_list *,
			     struct objfile *));

/* Add any kind of symbol to a psymbol_allocation_list. */

#define	ADD_PSYMBOL_VT_TO_LIST(NAME,NAMELENGTH,NAMESPACE,CLASS,LIST,VALUE,VT) \
  do {		        						\
    register struct partial_symbol *psym;				\
    if ((LIST).next >= (LIST).list + (LIST).size)			\
	   extend_psymbol_list (&(LIST),objfile);				\
    psym = (LIST).next++;						\
									\
    SYMBOL_NAME (psym) = (char *) obstack_alloc (&objfile->psymbol_obstack,	\
						 (NAMELENGTH) + 1);	\
    memcpy (SYMBOL_NAME (psym), (NAME), (NAMELENGTH));			\
    SYMBOL_NAME (psym)[(NAMELENGTH)] = '\0';				\
    SYMBOL_NAMESPACE (psym) = (NAMESPACE);				\
    SYMBOL_CLASS (psym) = (CLASS);					\
    VT (psym) = (VALUE); 						\
  } while (0);

#ifdef DEBUG

/* Since one arg is a struct, we have to pass in a ptr and deref it (sigh) */

#define	ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value) \
  add_psymbol_to_list (name, namelength, namespace, class, &list, value)

#define	ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value) \
  add_psymbol_addr_to_list (name, namelength, namespace, class, &list, value)

#else	/* !DEBUG */

/* Add a symbol with an integer value to a psymtab. */

#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value) \
  ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE)

/* Add a symbol with a CORE_ADDR value to a psymtab. */

#define	ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value)\
  ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE_ADDRESS)

#endif	/* DEBUG */

			/*   Functions   */

extern void
sort_pst_symbols PARAMS ((struct partial_symtab *));

extern struct symtab *
allocate_symtab PARAMS ((char *, struct objfile *));

extern int
free_named_symtabs PARAMS ((char *));

extern void
fill_in_vptr_fieldno PARAMS ((struct type *));

extern void
add_symtab_fns PARAMS ((struct sym_fns *));

extern void
init_entry_point_info PARAMS ((struct objfile *));

extern void
syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int));

extern void
new_symfile_objfile PARAMS ((struct objfile *, int, int));

extern struct partial_symtab *
start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *,
			      char *, CORE_ADDR,
			      struct partial_symbol *,
			      struct partial_symbol *));

/* Sorting your symbols for fast lookup or alphabetical printing.  */

extern void
sort_block_syms PARAMS ((struct block *));

extern void
sort_symtab_syms PARAMS ((struct symtab *));

extern void
sort_all_symtab_syms PARAMS ((void));

/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
   (and add a null character at the end in the copy).
   Returns the address of the copy.  */

extern char *
obsavestring PARAMS ((char *, int, struct obstack *));

/* Concatenate strings S1, S2 and S3; return the new string.
   Space is found in the symbol_obstack.  */

extern char *
obconcat PARAMS ((struct obstack *obstackp, const char *, const char *,
		  const char *));

			/*   Variables   */

/* From symfile.c */

extern struct partial_symtab *
allocate_psymtab PARAMS ((char *, struct objfile *));

/* From dwarfread.c */

extern void
dwarf_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int,
			      file_ptr, unsigned int, file_ptr, unsigned int));

/* From dbxread.c */

extern void
elfstab_build_psymtabs PARAMS ((struct objfile *objfile,
	struct section_offsets *section_offsets,
	int mainline,
	file_ptr staboff, unsigned int stabsize,
	file_ptr stabstroffset, unsigned int stabstrsize));

/* From demangle.c */

extern void
set_demangling_style PARAMS ((char *));

#endif	/* !defined(SYMFILE_H) */
Commit	Line	Data
bd5635a1	1	/* Definitions for reading symbol files into GDB.
318bf84f	2	Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
bd5635a1 RP	3
	4	This file is part of GDB.
	5
2f068b0d	6	This program is free software; you can redistribute it and/or modify
bd5635a1	7	it under the terms of the GNU General Public License as published by
2f068b0d FF	8	the Free Software Foundation; either version 2 of the License, or
2f068b0d FF	9	(at your option) any later version.
bd5635a1	10
2f068b0d	11	This program is distributed in the hope that it will be useful,
bd5635a1 RP	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
2f068b0d FF	17	along with this program; if not, write to the Free Software
2f068b0d FF	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
bd5635a1	19
318bf84f FF	20	#if !defined (SYMFILE_H)
	21	#define SYMFILE_H
	22
bd5635a1 RP	23	/* This file requires that you first include "bfd.h". */
bd5635a1 RP	24
318bf84f FF	25	struct psymbol_allocation_list {
	26	struct partial_symbol *list;
	27	struct partial_symbol *next;
	28	int size;
	29	};
	30
80d68b1d FF	31	/* Structure to keep track of symbol reading functions for various
	32	object file types. */
	33
	34	struct sym_fns {
	35
	36	/* is the name, or name prefix, of the BFD "target type" that this
	37	set of functions handles. E.g. "a.out" or "sunOs" or "coff" or "elf". */
	38
	39	char *sym_name;
	40
	41	/* counts how many bytes of sym_name should be checked against the
	42	BFD target type of the file being read. If an exact match is
	43	desired, specify the number of characters in sym_name plus 1 for the
	44	NUL. If a prefix match is desired, specify the number of characters in
	45	sym_name. */
	46
	47	int sym_namelen;
	48
	49	/* Initializes anything that is global to the entire symbol table. It is
	50	called during symbol_file_add, when we begin debugging an entirely new
	51	program. */
	52
	53	void (sym_new_init) PARAMS ((struct objfile ));
	54
	55	/* Reads any initial information from a symbol file, and initializes the
	56	struct sym_fns SF in preparation for sym_read(). It is called every
	57	time we read a symbol file for any reason. */
	58
	59	void (sym_init) PARAMS ((struct objfile ));
	60
	61	/* sym_read (objfile, addr, mainline)
	62	Reads a symbol file into a psymtab (or possibly a symtab).
51b80b00 FF	63	OBJFILE is the objfile struct for the file we are reading.
	64	SECTION_OFFSETS
	65	are the offset between the file's specified section addresses and
	66	their true addresses in memory.
	67	MAINLINE is 1 if this is the
80d68b1d FF	68	main symbol table being read, and 0 if a secondary
	69	symbol file (e.g. shared library or dynamically loaded file)
	70	is being read. */
	71
51b80b00	72	void (sym_read) PARAMS ((struct objfile , struct section_offsets *, int));
80d68b1d FF	73
	74	/* Called when we are finished with an objfile. Should do all cleanup
	75	that is specific to the object file format for the particular objfile. */
	76
	77	void (sym_finish) PARAMS ((struct objfile ));
	78
51b80b00 FF	79	/* This function produces a file-dependent section_offsets structure,
	80	allocated in the objfile's storage, and based on the parameter.
	81	The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
	82	with the higher levels of GDB. It should probably be changed to
	83	a string, where NULL means the default, and others are parsed in a file
	84	dependent way. The result of this function is handed in to sym_read. */
	85
	86	struct section_offsets (sym_offsets) PARAMS ((struct objfile *, CORE_ADDR));
	87
80d68b1d FF	88	/* Finds the next struct sym_fns. They are allocated and initialized
	89	in whatever module implements the functions pointed to; an
	90	initializer calls add_symtab_fns to add them to the global chain. */
	91
	92	struct sym_fns *next;
	93
	94	};
	95
318bf84f FF	96	extern void
	97	extend_psymbol_list PARAMS ((struct psymbol_allocation_list *,
	98	struct objfile *));
7e258d18 PB	99
	100	/* Add any kind of symbol to a psymbol_allocation_list. */
	101
318bf84f	102	#define ADD_PSYMBOL_VT_TO_LIST(NAME,NAMELENGTH,NAMESPACE,CLASS,LIST,VALUE,VT) \
7e258d18 PB	103	do { \
	104	register struct partial_symbol *psym; \
	105	if ((LIST).next >= (LIST).list + (LIST).size) \
318bf84f	106	extend_psymbol_list (&(LIST),objfile); \
7e258d18 PB	107	psym = (LIST).next++; \
7e258d18 PB	108	\
318bf84f	109	SYMBOL_NAME (psym) = (char *) obstack_alloc (&objfile->psymbol_obstack, \
7e258d18	110	(NAMELENGTH) + 1); \
318bf84f	111	memcpy (SYMBOL_NAME (psym), (NAME), (NAMELENGTH)); \
7e258d18 PB	112	SYMBOL_NAME (psym)[(NAMELENGTH)] = '\0'; \
	113	SYMBOL_NAMESPACE (psym) = (NAMESPACE); \
	114	SYMBOL_CLASS (psym) = (CLASS); \
	115	VT (psym) = (VALUE); \
	116	} while (0);
	117
318bf84f FF	118	#ifdef DEBUG
	119
	120	/* Since one arg is a struct, we have to pass in a ptr and deref it (sigh) */
	121
	122	#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value) \
	123	add_psymbol_to_list (name, namelength, namespace, class, &list, value)
	124
	125	#define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value) \
	126	add_psymbol_addr_to_list (name, namelength, namespace, class, &list, value)
	127
	128	#else /* !DEBUG */
	129
	130	/* Add a symbol with an integer value to a psymtab. */
	131
	132	#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value) \
	133	ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE)
	134
	135	/* Add a symbol with a CORE_ADDR value to a psymtab. */
	136
	137	#define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value)\
	138	ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE_ADDRESS)
	139
	140	#endif /* DEBUG */
	141
bd5635a1 RP	142	/* Functions */
bd5635a1 RP	143
318bf84f FF	144	extern void
	145	sort_pst_symbols PARAMS ((struct partial_symtab *));
	146
	147	extern struct symtab *
	148	allocate_symtab PARAMS ((char , struct objfile ));
	149
318bf84f FF	150	extern int
318bf84f FF	151	free_named_symtabs PARAMS ((char *));
bd5635a1	152
318bf84f FF	153	extern void
318bf84f FF	154	fill_in_vptr_fieldno PARAMS ((struct type *));
bd5635a1	155
318bf84f FF	156	extern void
	157	add_symtab_fns PARAMS ((struct sym_fns *));
	158
51b80b00 FF	159	extern void
	160	init_entry_point_info PARAMS ((struct objfile *));
	161
318bf84f FF	162	extern void
	163	syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int));
	164
51b80b00 FF	165	extern void
	166	new_symfile_objfile PARAMS ((struct objfile *, int, int));
	167
318bf84f	168	extern struct partial_symtab *
51b80b00 FF	169	start_psymtab_common PARAMS ((struct objfile , struct section_offsets ,
51b80b00 FF	170	char *, CORE_ADDR,
318bf84f FF	171	struct partial_symbol *,
318bf84f FF	172	struct partial_symbol *));
bd5635a1 RP	173
	174	/* Sorting your symbols for fast lookup or alphabetical printing. */
	175
318bf84f FF	176	extern void
	177	sort_block_syms PARAMS ((struct block *));
	178
	179	extern void
	180	sort_symtab_syms PARAMS ((struct symtab *));
	181
	182	extern void
	183	sort_all_symtab_syms PARAMS ((void));
bd5635a1 RP	184
	185	/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
	186	(and add a null character at the end in the copy).
	187	Returns the address of the copy. */
	188
318bf84f FF	189	extern char *
318bf84f FF	190	obsavestring PARAMS ((char , int, struct obstack ));
bd5635a1 RP	191
	192	/* Concatenate strings S1, S2 and S3; return the new string.
	193	Space is found in the symbol_obstack. */
	194
318bf84f FF	195	extern char *
	196	obconcat PARAMS ((struct obstack obstackp, const char , const char *,
	197	const char *));
bd5635a1 RP	198
	199	/* Variables */
	200
318bf84f FF	201	/* From symfile.c */
	202
	203	extern struct partial_symtab *
	204	allocate_psymtab PARAMS ((char , struct objfile ));
	205
51b80b00	206	/* From dwarfread.c */
318bf84f	207
51b80b00 FF	208	extern void
	209	dwarf_build_psymtabs PARAMS ((struct objfile , struct section_offsets , int,
	210	file_ptr, unsigned int, file_ptr, unsigned int));
318bf84f	211
51b80b00	212	/* From dbxread.c */
318bf84f	213
51b80b00 FF	214	extern void
	215	elfstab_build_psymtabs PARAMS ((struct objfile *objfile,
	216	struct section_offsets *section_offsets,
	217	int mainline,
	218	file_ptr staboff, unsigned int stabsize,
	219	file_ptr stabstroffset, unsigned int stabstrsize));
318bf84f	220
51b80b00	221	/* From demangle.c */
318bf84f FF	222
318bf84f FF	223	extern void
51b80b00	224	set_demangling_style PARAMS ((char *));
318bf84f FF	225
318bf84f FF	226	#endif /* !defined(SYMFILE_H) */